| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 701290700 | Detection of faulty sensor | 72 |
| 20120089297 | SENSOR OFFSET AMOUNT ESTIMATE DEVICE - Provided is a sensor offset amount estimate device capable of accurately estimating the offset amount of a sensor. In a sensor offset amount estimate device, a sensor correction calculation unit estimates the offset amounts of a left and right acceleration sensor, a steering angle sensor, and a yaw rate sensor on the basis of a motion equation considering road camber when a vehicle is turned and traveling information detected by a sensor. Therefore, even when the vehicle travels on the road with road camber, it is possible to accurately estimate the offset amounts of the sensors. | 04-12-2012 |
| 20120232742 | METHODS AND APPARATUS FOR LOST CONNECTION HANDLING - A computer-implemented method, executable by a vehicle computing system (VCS), includes determining that a connection between a wireless device and a VCS has been lost. The method further includes determining if a driver is present in the vehicle, upon a lost link detection. The method additionally includes waiting until an enter-event occurs and then attempting to re-establish a connection between the wireless device and the VCS. This last step may be conditional upon a determination that a driver is not present. | 09-13-2012 |
| 20140039748 | BACKUP VELOCITY ESTIMATION UTILIZING TRACTION DEVICE SPEED - A velocity estimation method and system is disclosed. The method may include receiving a location signal indicative of a location of the machine and estimating the velocity of the machine based on a change in the location of the machine over a period of time. The method may further include determining a loss of the location signal, detecting a traction device speed of the machine, and selectively estimating the velocity of the machine based on the traction device speed when the location signal is determined to be lost. | 02-06-2014 |
| 20140324274 | TEST APPARATUS FOR AVIONIC SENSORS AND METHOD OF TESTING AVIONIC SENSORS - A test apparatus for avionic sensors including a helicopter, an avionic sensor test pod equipped with at least one avionic sensor and a cable suspension system connecting the test pod to the helicopter. | 10-30-2014 |
| 20140336865 | METHOD FOR DIAGNOSING A TRAILING EDGE FLAP FAULT - A method of diagnosing a trailing edge flap fault in an aircraft having a trailing edge flap system including multiple trailing edge flaps, a flap handle for setting the position of the trailing edge flaps, and a flap position sensor, the method includes receiving a position signal, determining a variation in the position signal relative to a reference position, diagnosing a fault, and providing an indication of the diagnosed fault. | 11-13-2014 |
| 20140379201 | APPARATUS AND METHOD FOR VEHICULAR SELF-DIAGNOSIS - A vehicular self-diagnosis apparatus in a vehicle diagnoses whether a sensor serving as an accessory in the vehicle exhibits an anomaly. The apparatus includes a state recording section and a determination recording section. The state recording section records sensor information of the sensor. The determination recording section determines a normal state, a failed state, or a non-normal state, whichever the sensor exhibits based on the sensor information, and records the determined state. This reduces useless inspection or repair of the sensor having exhibited the non-normal state that is enabled to return to the normal state. | 12-25-2014 |
| 20150019066 | LEAK DETECTION FOR CANISTER PURGE VALVE - Methods and systems for detecting a leak in a canister purge valve are disclosed. In one example approach, a method comprises indicating a leak in response to a temperature change in a fuel vapor canister coupled to a fuel tank in an emission control system while the engine is in operation and a purge valve is closed. | 01-15-2015 |
| 20150057873 | Apparatus and Method for Configuring a Tire Pressure Monitoring System - Various embodiments of an apparatus and method for configuring a tire pressure monitoring system are disclosed. One method comprises rotating a first tire of a plurality of tires on a vehicle and receiving a signal indicative of the speed of rotation of the first tire from a wheel speed sensor associated with the first tire. A controller associates the first tire with a wheel location in response to receiving the signal from the wheel speed sensor. A tire pressure sensor in the first tire generates a tire characteristic signal in response to the rotation of the first tire. The controller receives the tire characteristic signal and associates the tire characteristic signal with the wheel location in response to receiving the tire characteristic signal within a predetermined time period from receiving the signal indicative of the speed of rotation of the first wheel. | 02-26-2015 |
| 20150088364 | THERMOSTAT FAILURE DETECTION DEVICE AND THERMOSTAT FAILURE DETECTION METHOD - A thermostat failure detection device sequentially calculates a normal-time minimum water temperature on an assumption that a thermostat is normal and an internal combustion engine is operated in a state where the engine water temperature is less likely to rise, sequentially calculates a failure-time maximum water temperature on an assumption that the thermostat is in a stuck-open failure state and the internal combustion engine is operated in a state where the engine water temperature is likely to rise, determines the failure of the thermostat if the engine water temperature is lower than the normal-time minimum water temperature, determines the normality of the thermostat if the engine water temperature is higher than the failure-time maximum water temperature, and determines neither the normality nor the failure if the engine water temperature is between the normal-time minimum water temperature and the failure-time maximum water temperature. | 03-26-2015 |
| 20150134191 | INSPECTION DEVICE OF VEHICLE DRIVER ASSISTANCE SYSTEMS - An inspection device for vehicle driver assistance systems (DASs) mounted on a vehicle may include: i) a frame unit including pillar frames, where vehicles forwardly enter and backwardly exit, at respective corners of a base frame, and an upper frame is coupled to upper end portions of the pillar frames; a correction unit installed at the upper frame such that it is movable in multi-axis directions so as to correct a camera measurement point of a lane departure warning system (LDWS) at a front side of the vehicle and configured to display a correction target with respect to the camera as an image; and an inspection unit installed at the upper frame such that it is movable in multi-axis directions so as to check a normal operation of the LDWS and configured to display a driving lane as an image. | 05-14-2015 |
| 20150298672 | SIGNAL PROCESSING APPARATUS FOR WHEEL SPEED SENSOR - Disclosed herein is a signal processing apparatus for a wheel speed sensor, which monitors a current input to a wheel speed sensor so as to prevent the current from being excessively supplied to the wheel speed sensor. That is, the present disclosure relates to the signal processing apparatus for a wheel speed sensor, which monitors the current input to the wheel speed sensor in a duplex manner. The signal processing apparatus for a wheel speed sensor include a sensor input terminal unit to which a sensing signal of a wheel speed sensor is input, and a normality determination block determining whether or not the sensing signal is normal. | 10-22-2015 |
| 20160039256 | Apparatus and Method for Configuring a Tire Pressure Monitoring System - Various embodiments of an apparatus and method for configuring a tire pressure monitoring system are disclosed. One method comprises rotating a first tire of a plurality of tires on a vehicle and receiving a signal indicative of the speed of rotation of the first tire from a wheel speed sensor associated with the first tire. A controller associates the first tire with a wheel location in response to receiving the signal from the wheel speed sensor. A tire pressure sensor in the first tire generates a tire characteristic signal in response to the rotation of the first tire. The controller receives the tire characteristic signal and associates the tire characteristic signal with the wheel location in response to receiving the tire characteristic signal within a predetermined time period from receiving the signal indicative of the speed of rotation of the first wheel. | 02-11-2016 |
| 20160140784 | CONTROL APPARATUS AND CONTROL SYSTEM CONTROLLING PROTECTIVE APPARATUS FOR PROTECTING PASSENGER OF VEHICLE OR PEDESTRIAN - An air bag ECU includes an ECU communication unit communicating with an external sensor (for example, a front right acceleration sensor) and a faulty sensor mount determination unit determining whether a faulty sensor having been diagnosed as being faulty before is connected to the air bag ECU based on failure history data indicating whether the external sensor has been diagnosed as being faulty before. The faulty sensor mount determination unit compares identification data recorded in, for example, a faulty sensor ID recording unit, for individually identifying an external sensor having been diagnosed as being faulty before with the identification data of the external sensor connected to the air bag ECU and determines whether a faulty sensor is connected to the air bag ECU. | 05-19-2016 |
| 20160148444 | Method for Determining a Defective Component of a Vehicle - In order to determine a defective component of a vehicle, a defect of a first sensor system which is located at a first position in the vehicle is detected. A component, which is located between the first position and the outer edge of the vehicle and is, in particular, sensorless, of the vehicle is marked as being defective. | 05-26-2016 |
| 20160163134 | METHOD FOR DETECTING THE DETACHMENT OF A SENSOR DEVICE MOUNTED IN A WHEEL OF A VEHICLE - A method for detecting the detachment of a sensor device mounted in a wheel of a motor vehicle at an assembly distance from the center of the wheel. The method includes steps for acquiring (E | 06-09-2016 |
| 20180025558 | DETECTION AND RECONSTRUCTION OF SENSOR FAULTS | 01-25-2018 |
| 701290800 | By applying signal to test sensor | 3 |
| 20120303205 | DETECTING ANOMALIES IN FAULT CODE SETTINGS AND ENHANCING SERVICE DOCUMENTS USING ANALYTICAL SYMPTOMS - A method is provided for identifying a root cause of a fault in a serviced vehicle based on analytical symptoms. Parameter identification data associated with identified DTCs is retrieved. Parameter identification data from a plurality of vehicles experiencing the DTCs is collected. A first set of diagnostic rules is generated that identify vehicle operating parameters for executing a DTC algorithm or for triggering a DTC. A second set of diagnostic rules is generated that identify vehicle operating parameters used for selecting field failure data obtained when the DTC is triggered. Statistically significant rules are extracted from the second set of diagnostic rules. The first set of rules and the statistically significant rules are cooperatively applied to the parameter identification data for identifying a subset of the parameter identification data that represents anomalies. A subject matter expert analyzes the anomalies for identifying a root cause of the fault. | 11-29-2012 |
| 20120310467 | PROCESSOR SAFETY TEST CONTROL SYSTEMS AND METHODS - First, second, and third processor modules selectively execute a test having N test states while an ignition system of the vehicle is off. N is an integer greater than one. The N test states each include: the first processor module setting a first output to a first predetermined value for one of the N test states; the second processor module setting a second output to a second predetermined value for the one of the N test states; the third processor module setting a third output to a third predetermined value for the one of the N test states; a predetermined expectation for the one of the N test states; and at least one of the first, second, and third processor modules indicating a fault when a fourth output is different than the predetermined expectation. A control module sets the fourth output based on the first, second, and third outputs. | 12-06-2012 |
| 20140379202 | Sensor Interface Transceiver - Some embodiments of the present disclosure relate to a sensor interface module that selectively varies the resistance of an RLC network based upon one or more properties of exchanges data signals between one or more sensors and a controller (e.g., an ECU). The disclosed sensor interface module has a closed control loop that receives modulated sensor current signals from one or more sensors and that regulates a modulated output voltage that is provided to the one or more sensors. A protocol processor detects one or more properties of the exchanged voltage and current signals. The protocol processor provides the detected properties to an impedance controller, which selectively varies the value of an impedance element within an RLC network, located between the sensor interface module and the one or more sensor, to adjust the one or more properties in a manner that improves performance of the sensor interface module. | 12-25-2014 |
| 701290900 | Fault prediction | 4 |
| 20120197480 | LINE REPLACEABLE UNIT WITH INTEGRAL MONITORING AND DISTRIBUTED ARCHITECTURE COMPRISING SUCH A UNIT - A line replaceable unit for aircraft, the line replaceable unit including: a measuring device configured to measure useful data to define the status of the line replaceable unit, a predictive monitoring device configured to calculate indicators of potential breakdown of the line replaceable unit from useful data to define the status of the line replaceable unit, a communication interlace capable of forwarding indicators of potential breakdown to a central unit. | 08-02-2012 |
| 20120232743 | DEVELOPING FAULT MODEL FROM SERVICE PROCEDURES - A method and system for developing fault models from structured text documents, such as service procedures. A service procedure or other structured text document is parsed using diagnostic rules to extract symptoms, failure modes, and correlations. Testing procedures and repair instructions are also parsed to create a fault tree and identify additional symptoms and failure modes. Reachability analysis is then used to find hidden dependencies in the fault tree, thus yielding additional correlations. The resultant symptoms, failure modes, and correlations are then assembled into a fault model, which can be used for real-time fault diagnosis onboard a vehicle, or for off-board diagnosis at service shops. | 09-13-2012 |
| 20120310468 | METHOD AND APPARATUS FOR AUTOMATICALLY CALIBRATING VEHICLE PARAMETERS - A method and apparatus for automatically calibrating vehicle parameters is described. In one embodiment, the method includes measuring a parameter value during vehicle operation; comparing the measured parameter value to an actual parameter value to identify at least one vehicle parameter bias as an actual measurement error; and modifying at least one vehicle parameter based on the at least one vehicle parameter bias. | 12-06-2012 |
| 20130035822 | System and Method for Importance Sampling Based Time-Dependent Reliability Prediction - A system and a method of generating a reliability prediction for components of a vehicle. The system and the method include implementing importance sampling in dynamic vehicle systems when the vehicle is subjected to time-dependent random terrain input. Alternatively, simulation data may be implemented. The system and the method include determining a decorrelation length, scaling up the standard deviation of white noise, and calculation of a likelihood ratio. | 02-07-2013 |
| 701300100 | Inhibiting fault indication | 2 |
| 20120041634 | SYSTEM AND METHOD FOR DETECTING AND ISOLATING FAULTS IN PRESSURE SENSING OF FLUSH AIR DATA SYSTEM (FADS) - A system and method for detecting and isolating faults in pressure ports ( | 02-16-2012 |
| 20120158240 | CONTROLLER AREA NETWORK MESSAGE TRANSMISSION DISABLE TESTING SYSTEMS AND METHODS - An inhibit path diagnostic system includes a first control module. The first control module includes a message output and transmits a first message from the message output to a controller area network (CAN) via a message transmission path. An inhibit path circuit includes the message transmission path. A second control module transmits a disable control signal to the inhibit path circuit to disable the message transmission path. The first control module transmits a second message from the message output subsequent to and based on the transmitting of the disable control signal. At least one of the first control module and the second control module detects a fault of the inhibit path circuit subsequent to the transmitting of the second message and based on a feedback signal from the CAN. | 06-21-2012 |
| 701300200 | Using mathematical model | 5 |
| 20120245790 | SYSTEM AND METHOD FOR VEHICLE SPINOUT DETECTION - A method for vehicle spinout detection is described. The method includes monitoring a set of conditions. If the conditions meet a set of criteria, the method calculates a lateral factor, employing one or more past values of the lateral factor. The lateral factor indicates the vehicle's lateral velocity. Then, a spinout factor is computed based on the calculated lateral factor. The spinout factor indicates the difference between the direction of vehicle travel and the direction the vehicle is heading. If the spinout factor is above a predefined threshold value, the method generates a warning signal. A system for vehicle spinout detection is also described. | 09-27-2012 |
| 20120259502 | SYSTEM AND METHOD FOR USE IN EVALUATING AN OPERATION OF A COMBUSTION MACHINE - A method for use in evaluating an operation of a combustion machine. A plurality of current average intensities is calculated by a computing device based on a series of intensity readings from a flame sensor. Each current average intensity corresponds to a current time interval. The computing device selects a plurality of past average intensities, each of which corresponds to a past time interval equal in duration to the current time interval corresponding to a current average intensity. The computing device calculates a plurality of decay rates indicating a change in intensity readings over a current time interval based on the current average intensities and the past average intensities. The computing device estimates a predicted flame sensor malfunction time based on the plurality of decay rates. | 10-11-2012 |
| 20120290168 | STATE ESTIMATION, DIAGNOSIS AND CONTROL USING EQUIVALENT TIME SAMPLING - A method and system for using Equivalent Time Sampling to improve the effective sampling rate of sensor data, and using the improved-resolution data for diagnosis and control. Data samples from existing sensors are provided, where the sampling rate of the existing sensors is not sufficient to accurately characterize the parameters being measured. High-resolution data sets are reconstructed using Equivalent Time Sampling. High-resolution input data sets are used in a system model to simulate the performance of the system being measured. Results from the system model, and high-resolution output data sets from Equivalent Time Sampling, are provided to an estimator, which provides accurate estimation of measured quantities and estimation of quantities not measured. Output from the estimator is used for fault diagnosis and control of the system being measured. | 11-15-2012 |
| 20120290169 | NOVEL SENSOR ALIGNMENT PROCESS AND TOOLS FOR ACTIVE SAFETY VEHICLE APPLICATIONS - A method and tools for virtually aligning object detection sensors on a vehicle without having to physically adjust the sensors. A sensor misalignment condition is detected during normal driving of a host vehicle by comparing different sensor readings to each other. At a vehicle service facility, the host vehicle is placed in an alignment target fixture, and alignment of all object detection sensors is compared to ground truth to determine alignment calibration parameters. Alignment calibration can be further refined by driving the host vehicle in a controlled environment following a leading vehicle. Final alignment calibration parameters are authorized and stored in system memory, and applications which use object detection data henceforth adjust the sensor readings according to the calibration parameters. | 11-15-2012 |
| 20120296514 | System and Method of Conducting Vehicle Usage Data Analysis - A method of conducting vehicle usage data analysis is provided. The method includes providing usage data about at least one vehicle to a database. The usage data may be analyzed and compared to a member of a set of vehicle development models to determine whether to update a vehicle development model. The usage data may also be analyzed to determine whether to transmit a communication to a vehicle. | 11-22-2012 |
| 701300300 | Plausibility, verification or confirmation of sensor output | 12 |
| 20120078461 | CONTROL APPARATUS FOR VEHICULAR ELECTRIC COMPONENT - A sensor control apparatus ( | 03-29-2012 |
| 20120143433 | LINKAGE CONTROL SYSTEM WITH POSITION ESTIMATOR BACKUP - A linkage control system for a machine having a linkage and a work implement is disclosed. The linkage control system has an operator input device configured to control the movement of the linkage, at least one actuator configured to respond to the operator input device to control the movement of the linkage, and at least one sensor configured to generate a signal indicative of sensor data on at least one actuator. The linkage control system has a controller in communication with at least one actuator, at least one sensor, and the operator input device. The controller is configured to calculate the position of the linkage, to detect anomalous sensor data from at least one sensor, and to predict the position of the linkage and work implement based on a last known accurate position, a last known accurate sensor data, and the operator input device. | 06-07-2012 |
| 20120310469 | METHOD AND DEVICE FOR DETECTING THE DYSFUNCTION OF A GAS PRESSURE SENSOR IN A VEHICLE TIRE | 12-06-2012 |
| 20130090803 | METHOD AND SYSTEM FOR VALIDATING INFORMATION - A method for validating information, wherein a first information item is detected essentially continuously, at least for the duration of its relevance, by a vehicle-to-X communication device, wherein a second information item is detected at the same time as the first information item by at least an individual sensor or a group of sensors, wherein the at least one individual sensor or the group of sensors is coupled at the data level to the vehicle-to-X communication device and wherein the first and/or second information items are validated by reconciling an information content of the first and second information items in the case of corresponding information content. The method is distinguished by the fact that the second information item is detected in an essentially discontinuous fashion. | 04-11-2013 |
| 20130211661 | METHOD AND CONTROL SYSTEM FOR CARRYING OUT A PLAUSIBILITY CHECK OF A FIRST DRIVER INPUT SENSOR WITH REGARD TO A SECOND DRIVER INPUT SENSOR WHICH IS DIFFERENT FROM THE FIRST DRIVEWR INPUT SENSOR OF A MOTOR VEHICLE - A method for carrying out a plausibility check of a first driver input sensor with regard to a second driver input sensor which is different from the first driver input sensor of a motor vehicle includes the first and the second driver input sensors each monitoring interventions of a driver in a brake pedal or an accelerator pedal, or a steering wheel, or a selector lever of the motor vehicle, the measuring signals of the first and the second driver input sensors being detected and redundantly evaluated independently of one another in a first functional module and a second functional module which is independent of the first functional module, and the two evaluations being compared to one another. | 08-15-2013 |
| 20130261877 | METHOD AND DEVICE FOR VERIFYING THE CONSISTENCY OF THE SIDESLIP PROBES OF AN AIRCRAFT - The invention pertains to a method for verifying the consistency of the values (β1,β2,β3) given by the sideslip probes (1,2,3) of an aircraft and to a device implementing this method. This method is noteworthy in that it consists in consolidating the values of two sideslip probes by using the value of the incidence α. | 10-03-2013 |
| 20130317691 | METHOD OF VERIFYING THE CONSISTENCY OF VALUES GIVEN BY AN INCIDENCE PROBE OF AN AIRCRAFT - The invention pertains to a method and apparatus for verifying the consistency of the values given by an angle of attack probe of an aircraft. The method and apparatus verifies the proper operation of the angle of attack probe by using the aircraft's vertical load factor measurement provided by an accelerometer to estimate the angle of attack and then comparing the estimated angle of attach with the measure angle of attack. | 11-28-2013 |
| 20140012457 | Method for diagnosing a differential pressure sensor situated in an air duct of an internal combustion engine - A method for diagnosing a differential pressure sensor situated in an air duct of an internal combustion engine, including: selecting a tolerance range for an output signal of the differential pressure sensor, within which a predetermined pressure difference is to be interpreted; and ignoring an error, in which the output signal of the differential pressure sensor falls out of the tolerance range, if, first of all, a predetermined operating situation prevails, in which the predetermined pressure difference is considered to be applied to the differential pressure sensor, and secondly, a disturbance pressure is detected in the air duct. | 01-09-2014 |
| 20140297096 | SENSOR STATE DETERMINATION SYSTEM - This sensor state determination system is a sensor state monitoring system capable of accurately determining whether or not a detecting sensor used with a railroad vehicle is in an abnormal state. This system includes: a detecting sensor capable of detecting a physical value acting upon the railroad vehicle; and an electronic control device. A monitoring sensor equivalent to the detection sensor is installed at a position equivalent to the position of the detection sensor. The electronic control device is provided with a determination means (coherence calculation section, state determination section) that computes, based on a first signal detected by the detecting sensor and a second signal detected by the monitoring sensor, a coherence value indicating a correlation between the signals. The electronic control device determines that the detecting sensor is in an abnormal state if the coherence value is smaller than a preset abnormality determination value. | 10-02-2014 |
| 20140336866 | Method for Determining Input Data of a Driver Assistance Unit - In a method for determining input data of a driver assistance unit, information data are provided, which were determined as a function of a measurement signal of a first sensor using a predefined first calculation rule. Raw data are provided, which are representative of a measurement signal of the first and/or a second sensor. The plausibility data are determined as a function of the raw data using a predefined second calculation rule. Fusion data, which represent information data that have been checked for plausibility, are determined as a function of the information data and the plausibility data. The fusion data are provided as the input data to the driver assistance unit. | 11-13-2014 |
| 20150338850 | COOPERATIVE PERCEPTION AND STATE ESTIMATION FOR VEHICLES WITH COMPROMISED SENSOR SYSTEMS - A method and system for sharing information between independent agents having a processor and memory having instructions stored thereon that, when executed by the processor, cause the system to receive signals indicative of a fault of a sensor system of a first independent agent; transmit signals indicative of a request for sensor information to a second independent agent; receive signals indicative of state information for the second independent agent in response to the receiving of the request for sensor information; and apply the state information to a navigation system of the first independent agent in response to the receiving of the state information. | 11-26-2015 |
| 20160110932 | System, Device and Method for Functional Plausibility Checking of Sensor Data - A device, a sensor arrangement, a system and a method are provided for checking the plausibility of sensor data. The plausibility of the results of processing of sensor data is checked with an independent module by an alternative verification method at each stage, and quality indicators are calculated for the reliability of the calculated data from this plausibility check, which can be taken into account during further processing. | 04-21-2016 |
| 701300400 | Utilizing time related property of sensor output (e.g., period or frequency, etc.) | 2 |
| 20120203422 | PRESSURE SENSOR DIAGNOSTIC METHOD AND COMMON RAIL FUEL INJECTION CONTROL DEVICE - A pressure sensor diagnosis method and a common-rail-type fuel injection control device to of diagnose the presence or the non-presence of an abnormality of a pressure sensor without having a dedicated circuit. A time between energizing of injectors and the occurrence of a peak counter electromotive current is measured as a valve closing time. A rail pressure with respect to the measured valve closing time is obtained as an estimated rail pressure based on a correlation between a valve closing time and the rail pressure. When an absolute value of the difference between the estimated rail pressure and an actual rail pressure is equal to or less than a predetermined error, it is determined that the pressure sensor has no abnormality. Otherwise, it is determined that the pressure sensor has an abnormality. | 08-09-2012 |
| 20140046532 | ABNORMALITY DETERMINATION DEVICE AND METHOD OF LONGITUDINAL ACCELERATION SENSOR - The running control device and method according to the present invention are those for determining abnormality of a longitudinal acceleration sensor which detects vehicular longitudinal acceleration that is used in a vehicle running control. An integrated value of a vehicular longitudinal acceleration that is detected by the longitudinal acceleration sensor is calculated, and determination whether or not the longitudinal acceleration sensor is abnormal is conducted on the basis of the integrated value and a vehicle speed based on vehicle wheel speeds. The calculation of the integrated value is initiated when a situation where the vehicle speed based on vehicle wheel speeds is zero and the increasing rate of the detected vehicular longitudinal acceleration is equal to or larger than a reference value for the increasing rate continues for a period which is equal to or larger than a reference value for the initiation of calculation. | 02-13-2014 |
| 701300500 | By specific comparison with sensor output | 27 |
| 20120150383 | Systems and Methods for Detection of Piston Pump Failures on Mobile Machines - A method and system for monitoring and predicting failure in pumps on operating vehicles is disclosed. The method may comprise measuring a plurality of a pressure drops across an orifice in a case drain line of a vehicle operating in drive gear, determining an actual case drain flow rate for each measured pressure drop, selecting a plurality of the actual case drain flow rates, estimating for each selected actual case drain flow rate an estimated flow rate for the case drain line and displaying the difference between the actual case drain flow rate and the estimated flow rate for each selected actual case drain flow rate. | 06-14-2012 |
| 20130054083 | CATALYST OXYGEN STORAGE CAPACITY ADJUSTMENT SYSTEMS AND METHODS - A system for a vehicle includes an oxygen storage capacity (OSC) determination module, a delay determination module, a correction module, and a fault detection module. The OSC determination module determines an OSC period of a catalyst of an exhaust system based on first and second amounts of oxygen measured using first and second oxygen sensors located upstream and downstream of the catalyst, respectively. The delay determination module determines a delay period of the second oxygen sensor. The correction module sets a corrected OSC period for the catalyst based on a difference between the OSC period and the delay period. The fault detection module selectively indicates that a fault is present in the catalyst based on the corrected OSC period. | 02-28-2013 |
| 20130253758 | THERMOSTAT FAILURE JUDGMENT DEVICE - A failure judgment device for a thermostat | 09-26-2013 |
| 20130345924 | CHANNEL DIAGNOSTIC SYSTEM FOR SENT RECEIVER - A system for performing diagnostic checks on a data message transmitted from a sensor and received by a receiver includes a receiver clock tick counter, a prescaler counter, a calibration pulse detector, a nibble counter, and a calculator. The system receives first and second data messages transmitted from the sensor. Pulse widths of first and second calibration pulses of the first and second data messages, respectively, and lengths of the first and second data messages are measured using the receiver clock tick, prescaler, and nibble counters based on a compensated receiver clock signal. Thereafter, the pulse widths of the first and second calibration pulses and the lengths of the first and second data messages are compared using the calculator to perform the diagnostic checks. | 12-26-2013 |
| 20160186414 | FAULT DETECTION, ISOLATION AND RECONFIGURATION SYSTEMS AND METHODS FOR CONTROLLING ELECTROHYDRAULIC SYSTEMS USED IN CONSTRUCTION EQUIPMENT - The present disclosure relates to fault detection, isolation and reconfiguration schemes, architectures and methods for use in electrohydraulic actuation systems for construction equipment. In one embodiment, a supervisory controller adapted to interface with a main controller of the construction vehicle is provided. A plurality of control nodes that interface with the supervisory controller are also disclosed, each of which includes pressure and position sensors. The nodes also include a first actuator control node for controlling operation of a first hydraulic actuator, a second actuator control node for controlling operation of a second hydraulic actuator, and a pump control node. The control system has an architecture in which faults are detected and isolated at the supervisory controller level and, where possible, within each of the control nodes at a sensor level, a component level, and a subsystem level. | 06-30-2016 |
| 701300600 | Mutual comparison of plural identical sensors | 3 |
| 20140142800 | METHOD AND APPARATUS FOR STATE OF HEALTH ESTIMATION OF OBJECT SENSING FUSION SYSTEM - A method and system for estimating the state of health of an object sensing fusion system. Target data from a vision system and a radar system, which are used by an object sensing fusion system, are also stored in a context queue. The context queue maintains the vision and radar target data for a sequence of many frames covering a sliding window of time. The target data from the context queue are used to compute matching scores, which are indicative of how well vision targets correlate with radar targets, and vice versa. The matching scores are computed within individual frames of vision and radar data, and across a sequence of multiple frames. The matching scores are used to assess the state of health of the object sensing fusion system. If the fusion system state of health is below a certain threshold, one or more faulty sensors are identified. | 05-22-2014 |
| 20150142254 | SYSTEM AND METHOD FOR DETECTING AND ISOLATING FAULTS IN PRESSURE SENSING OF FLUSH AIR DATA SYSTEM (FADS) - A system and method for detecting and isolating faults in pressure ports (2) and pressure transducers (3) of a pressure sensing system are disclosed. The system comprises a set of pressure ports (2) flushed to a nose cap (1) of a space vehicle in crucifix form. Three pressure transducers (3) are connected to each pressure port (2) through pneumatic tubes (4) for measuring surface pressure from the pressure ports (2). Separate power supplying units (7, 8, 9) are connected to the three pressure transducers (3) for powering the pressure transducers (3) at each pressure port (2). A processing unit (10) is configured to acquire voltage inputs corresponding to the measured surface pressure from the pressure transducers (3). The processing unit (10) executes one or more levels of fault checking to detect and isolate pressure transducer failures and blockage of the pressure ports (2) based on the voltage inputs. Hence, it is possible to enhance the accuracy and reliability of the pressure estimation of the FADS. cushion pressure | 05-21-2015 |
| 20160180611 | AIR DATA PROBE CONTAMINATION MONITOR | 06-23-2016 |
| 701300800 | Comparing current sensor output with previously stored value thereof | 8 |
| 20120203423 | ABNORMALITY JUDGMENT DEVICE AND VEHICLE CONTROLLER - According to an aspect of the present invention, there is provided an abnormality judgment device including: a change amount calculator configured to calculate a change amount between currently-obtained and previously-obtained steering angles; a storage section configured to store a threshold value; a reference setting section configured to set a reference steering angle; an incrementing section configured to continue gradually incrementing the threshold value after the change amount exceeds the threshold value, for a judgment time; a deviation comparator configured to compare an absolute deviation between the currently-obtained steering angle and the reference steering angle with the threshold value, and to count a counter when the absolute deviation exceeds the threshold value; and a judgment section configured to judge that the steering angle sensor is abnormal when the counter reaches a predetermined value. | 08-09-2012 |
| 20120215397 | SYSTEM AND METHOD FOR PERFORMING ENGINE MATERIAL TEMPERATURE SENSOR DIAGNOSTICS - A diagnostic system for performing engine material temperature sensor diagnostics includes a coolant flow sensor configured to provide an indication of coolant flow within a coolant system; an engine state sensor configured to provide an indication of an operational state of an internal combustion engine; and a diagnostic module in communication with the coolant flow sensor and engine state sensor. The diagnostic module is configured to use the indication of coolant flow and the indication of an operational state of the internal combustion engine to estimate an amount of accumulated energy within the internal combustion engine. | 08-23-2012 |
| 20120265396 | Distinguishing Between EGR Valve and Oxygen Sensor Degradation - A diagnostic method for an engine having a valve for controlling dilution of intake air. The method comprises, during engine fueling, indicating a degradation of the valve when the valve is commanded closed but sensor output corresponds to an oxygen level below that of air. The method further comprises, absent engine fueling, indicating degradation of the sensor when the valve is commanded closed but the sensor output corresponds to an oxygen level below that of air. | 10-18-2012 |
| 20120303206 | GAIN/AMPLITUDE DIAGNOSTICS OF NOx SENSORS - A method that includes in-vehicle systems and practices for determining whether a NOx sensor in an exhaust stream is performing properly. The method uses the gain and/or the offset of the NOx sensor to determine its accuracy. | 11-29-2012 |
| 20120330496 | METHOD FOR MONITORING A COOLANT TEMPERATURE SENSOR OF A MOTOR VEHICLE AND CONTROLLER - A method for monitoring a coolant temperature sensor of a motor vehicle is provided, wherein an actual value (TCOist=TCOSt) of a coolant temperature (TCO) is determined by a coolant temperature sensor when an internal combustion engine of the motor vehicle is started (t=tSt), and the coolant temperature sensor is diagnosed as a functional coolant temperature sensor if the actual value (TCOist) of the coolant temperature (TCO) drops briefly (tmin | 12-27-2012 |
| 20130103251 | Method for Monitoring a Pedestrian Detecting Device for a Vehicle - A method is provided for monitoring a pedestrian detecting device for a vehicle, wherein an absorber is provided on a bumper of the vehicle. The absorber can deform in the event of a collision with a pedestrian. The deformation is transferred to a connecting element, and the connecting element actuates a sensor that generates a sensor signal. The functionality of the pedestrian detecting device can be monitored by saving the current sensor signal as a target value every time the vehicle is parked, and saving the current sensor signal as an actual value every time the vehicle is restarted. The actual value is compared to the target value, and a deviation of the target value from the actual value is detected and/or displayed. | 04-25-2013 |
| 20140365066 | ELECTRONIC CONTROL UNIT HAVING ABNORMALITY DIAGNOSTIC FUNCTION OF SOAK TIMER - An electronic control unit includes a control portion and a soak timer. The control portion acquires first time information of a clock device when a power switch is turned off and stores the first time information in a nonvolatile storage portion. The control portion acquires second time information of the clock device when the soak timer activates the control portion or when the control portion receives an activation request. The control portion calculates a first time difference between the second time information and the first time information stored in the nonvolatile storage portion and determines an abnormality of the soak timer based a difference between the first time difference and the soak timer value of the soak timer. | 12-11-2014 |
| 20150329092 | METHOD FOR ASCERTAINING THE OFFSET VALUE OF A SENSOR SIGNAL - A method is provided for ascertaining the offset value of a sensor signal in a vehicle after the end of a parking period, in which the vehicle was parked, including the steps
| 11-19-2015 |
| 701300900 | Sensor output compared to range of values | 1 |
| 20140058617 | Acceleration Detection Apparatus - Provided is an acceleration detection apparatus installed in a vehicle and including a plurality of acceleration sensors having different characteristics, a function to input diagnosis signals in order to diagnose the outputs of the acceleration sensors and diagnose the fault detection functions while the vehicle stops, and a function to compare the outputs of the sensors in order to detect a fault while the vehicle runs. | 02-27-2014 |
| 701310100 | Sensor output compared to threshold | 10 |
| 20120150384 | METHOD FOR CONTROLLING CREEP TORQUE OF A VEHICLE - The present invention provides a technique for controlling creep torque to prevent a vehicle from rolling backward on an upward slope. In particular, a gradient of a road is calculated in real time from a detection value of a sensor and vehicle acceleration. A maximum creep torque for preventing roll-back caused by gravity according to the gradient is calculated using the gradient and vehicle information. A first creep torque reference is calculated based on the maximum creep torque and the vehicle speed. A second creep torque reference is calculated based on the maximum creep torque and the vehicle acceleration. A torque command value according to an operation state of a brake is calculated based on the first creep torque reference value and the second creep torque reference value and the gradient. In response, a torque output of a driving motor is controlled according to the calculated torque command value. | 06-14-2012 |
| 20130103252 | METHOD AND DEVICE FOR RECOGNIZING A DEVIATION OF A YAW-RATE SIGNAL OF A YAW-RATE SENSOR - A method for recognizing a deviation of a yaw-rate signal of a sensor of a vehicle is proposed which includes a step of receiving a piece of information regarding a linear acceleration of the vehicle, and a step of receiving the yaw-rate signal, which represents a yaw rate of the vehicle. A step of analyzing the yaw-rate signal takes place when the linear acceleration is smaller than a first threshold value, in order to recognize the deviation of the yaw-rate signal. | 04-25-2013 |
| 20130218398 | METHOD FOR DETERMINING OBJECT SENSOR MISALIGNMENT - A vehicle system and method that can determine object sensor misalignment while a host vehicle is being driven, and can do so without requiring multiple sensors with overlapping fields-of-view. In an exemplary embodiment where the host vehicle is traveling in generally a straight line, the present method uses an object sensor to track the path of a stationary object as it moves through the sensor's field-of-view and compares the sensed object path to an expected object path. If the sensed and expected paths of the stationary object deviate by more than some amount, then the method determines that the object sensor is skewed or otherwise misaligned. | 08-22-2013 |
| 20130253759 | WORK MACHINE - a work machine with a boom that can be derricked, includes: a first derricking angle detector that detects a derricking angle of the boom at a base end of the boom; a second derricking angle detector that detects a derricking angle of the boom at a front end of the boom; a first flexible volume acquisition part that acquires a flexible volume of the boom based on a detected angle by the first derricking angle detector and a detected angle by the second derricking angle detector; a second flexible volume acquisition part that acquires a flexible volume of the boom based on the detected angle by the first derricking angle detector; and a switching part that switches between acquisition of the flexible volume of the boom by the first flexible volume acquisition part and acquisition of the flexible volume of the boom by the second flexible volume acquisition part. | 09-26-2013 |
| 20140121886 | CHANNEL DIAGNOSTIC SYSTEM FOR SENT RECEIVER - A system for performing diagnostic checks on a data message transmitted from a sensor and received by a receiver includes a receiver clock tick counter, a prescaler counter, a calibration pulse detector, a nibble counter, and a calculator. The system receives first and second data messages transmitted from the sensor. Pulse widths of first and second calibration pulses of the first and second data messages, respectively, and lengths of the first and second data messages are measured using the receiver clock tick, prescaler, and nibble counters based on a compensated receiver clock signal. Thereafter, the pulse widths of the first and second calibration pulses and the lengths of the first and second data messages are compared using the calculator to perform the diagnostic checks. | 05-01-2014 |
| 20140148991 | METHOD AND SYSTEM FOR DIAGNOSING FAILURE OF OIL PRESSURE SENSOR - A method and a system that diagnose failure of an oil pressure sensor that senses or detects an operating oil pressure in a target device (e.g., a hydraulic clutch) using oil pressure. The method includes a controller that is configured to store an ignition off time that an ignition is turned off and detect an ignition on time that the ignition is turned on after the ignition has been turned off. In addition, the controller is configured to calculate an elapsed time from the ignition off time to the ignition on time and determine whether the elapsed time is equal to or greater than a predetermined time. When the elapsed time is equal to or greater than the predetermined time the controller is configured to diagnose oil pressure sensor failure and when the elapsed time is less than the predetermined time, stop diagnosing failure of the oil pressure sensor. | 05-29-2014 |
| 20140163808 | SYSTEM AND METHOD OF ACQUIRING BIAS OF YAW RATE SENSOR FOR VEHICLE - Disclosed herein is a system and method of acquiring the bias of a yaw rate sensor for a vehicle. The method includes matching, by a processor, map information based on global positioning system (GPS) information and vehicle speed information and determining a curvature of a road. The method further includes calculating, by the processor, a map based yaw degree based on the curvature of the road using steering angle information and the vehicle speed information. Additionally, the method includes acquiring, by the processor, the bias of the yaw rate sensor by comparing a measured value of the yaw rate sensor with the map based yaw degree. | 06-12-2014 |
| 20140358355 | METHOD AND DEVICE FOR DYNAMIC MONITORING OF GAS SENSORS - In a method for monitoring the dynamics of gas sensors of an internal combustion engine, which gas sensors exhibit a low-pass behavior as a function of geometry, measurement principle, aging, or contamination, a dynamics diagnosis is carried out, upon a change in the gas state variable to be measured, on the basis of a comparison between a modeled and a measured signal. The parameters of the low-pass behavior are determined in direction-dependent fashion by minimizing direction-dependent error signals created by high-pass filtering and logical combination with direction-dependent saturation characteristic curves, the direction-dependent error signals being calculated by comparing the modeled and the measured signal for a rising and a falling signal component. | 12-04-2014 |
| 20150081160 | FUEL CONTROL DIAGNOSTIC SYSTEMS AND METHODS - A fault diagnostic system of a vehicle includes an error module, a proportional integral (PI) module, and a fault module. The error module determines an error based on a difference between a sample of a signal generated by an exhaust gas oxygen sensor and a target value of the sample. The PI module determines a proportional correction based on the error, determines an integral correction based on the error, and determines a fueling correction based on the proportional and integral corrections. The fault module selectively diagnoses a fault based on the integral correction and the fueling correction. | 03-19-2015 |
| 20160163128 | VEHICLE CONTROL DEVICE - Provided is a vehicle control device improved in possibility of misdetection of a sensor failure. It is determined that output offset abnormality detection with respect to a steering angle sensor, a yaw rate sensor, and a lateral acceleration sensor can be performed when a tire slip amount is equal to or smaller than a predetermined value, and when it is determined that the output offset abnormality detection of each sensor can be performed, the output offset abnormality detection with respect to each sensor is performed. | 06-09-2016 |
| 701310300 | Including event counter | 1 |
| 20140288762 | MALFUNCTION DIAGNOSIS DEVICE AND MALFUNCTION DIAGNOSIS METHOD FOR KNOCK SENSOR - To enable, with a simple control, a malfunction of a type wherein the output from a knock sensor becomes excessively large to be detected, a knock-sensor malfunction diagnosis device includes a control section configured to determine that knocking has occurred when the magnitude of a knocking vibration frequency component derived from an output signal from a knock sensor exceeds a first threshold value, and diagnose the knock sensor as malfunctioning when a prescribed diagnostic condition wherein knocking cannot occur is satisfied and the magnitude of the knocking vibration frequency component derived from the output signal from the knock sensor exceeds a second threshold value. The control section is further configured to determine that the diagnostic condition is satisfied for a time interval from a time when a predetermined time period has expired after fuel-cutoff has started to a time when the fuel-cutoff ends, during execution of the fuel-cutoff. | 09-25-2014 |
