Patent application number | Description | Published |
20090114015 | METHOD AND CIRCUIT ARRANGEMENT FOR SECURE START-UP OF A RATE-OF-TURN SENSOR - A method and a circuit arrangement for the start-up of a rate-of-turn sensor (DRS) comprising at least one oscillator element are disclosed, wherein the operational control of the rate-of-turn sensor amplifies a signal (v(t), x(t)) proportional to the instantaneous speed or deflection of the oscillator element used as operating signal (F(t)) to operate the oscillator element. During the start-up process for the rate-of-turn sensor (DRS) the amplification of the amplitude (AF) of the operating signal (F(t)) is set to a constant pre-settable value (AFC) the stimulation frequency of the operating signal (F(t)) being essentially continuously raised from a starting value (f | 05-07-2009 |
20090249874 | RATE-OF-TURN SENSOR - Disclosed is a method for driving and simultaneously determining the deflection (x(t)) and/or the rate of motion (v(t)) of an electrostatically excited oscillator element. According to said method, the deflection (x(t)) and/or the rate of motion e (v(t)) of the oscillator element is/are determined based on the excitation current (i | 10-08-2009 |
20090249875 | RATE-OF-TURN SENSOR - A method for operation of and simultaneous analysis of a rate-of-turn sensor, comprising an oscillator element and a Coriolis element arranged on the oscillation element is disclosed, comprising the following method steps: generation of a digital operating signal with an excitation frequency corresponding to the resonant frequency of the oscillator element, digital to analogue conversion of the digital operating signal and operation of the oscillator element with the analogue operating signal, recording a Coriolis speed of the Coriolis element occurring about a normal to both oscillation axes due to the rotation of the rate-of-turn sensor with generation of an analogue Coriolis' signal proportional to the Coriolis speed, analogue-to-digital conversion of the analogue Coriolis signal, phase-sensitive multiplication of the digital Coriolis signal with the digital operating signal to form an intermediate signal, generation of a control signal proportional to the rate of turn of the rate of-turn sensor from the intermediate signal, multiplication of the control signal with the digital operating signal to give a digital compensation signal in phase with the digital operating signal, digital-to-analogue conversion of the digital compensation signal to give an analogue compensation signal in phase with the analogue operating signal and subjecting the Coriolis element to the analogue compensation signal and output of the control signal. | 10-08-2009 |
20090254303 | HIGHLY FAULT-TOLERANT METHOD FOR EVALUATING PHASE SIGNALS - The invention relates to a method for unambiguously determining a physical parameter Φ using m phase-measured values α | 10-08-2009 |
20090314060 | CIRCUIT ASSEMBLY FOR OPERATING A GAS SENSOR ARRAY - The invention relates to a circuit assembly for operating a sensor array, in particular, a gas sensor array for detecting gases, which comprises at least one signal line. According to said invention, a signal line is divided into two parallel line branches with a sensor and a diode, preferably a Schottky diode, arranged in each of said two parallel line branches, whereby the two diodes have opposite electrical polarity. The use of different polarity diodes permits actuation of both sensors through only one signal line. It can be determined if the current flows through one or the other of both sensors by merely polarizing the electrical potential applied to the signal line appropriately. | 12-24-2009 |
20120146561 | ELECTRONICALLY COMMUTATED ELECTRIC MOTOR FEATURING PREDICTION OF THE ROTOR POSITION AND INTERPOLATION, AND METHOD - The invention relates to an electronically commutated electric motor comprising a stator and an especially permanent-magnetic rotor. The electric motor also comprises a control unit which is effectively connected to the stator and is designed to generate control signals for commutating the stator in such a way that the stator can generate a rotating magnetic field in order to rotate the rotor. The electric motor further comprises at least one rotor position sensor which is designed to detect a position, especially an angular position, of the rotor and generate a rotor position signal representing the position of the rotor. The control unit is designed to generate the control signals in accordance with the rotor position signal. According to the invention, the control unit is designed to sample and quantize the rotor position signal and generate a digital rotor position signal. The digital rotor position signal forms a time-related data stream which corresponds to the sampled and quantized rotor position signal. The control unit includes an interpolator which is designed to generate at least one intermediate value in the digital rotor position signal, said intermediate value lying between two successive rotor position values. | 06-14-2012 |
20120313481 | Electroactive Polymer Generator for Converting Mechanical Energy into Electrical Energy - An electroactive polymer generator is configured to convert mechanical energy into electrical energy during expansion and compression of the polymer generator. The polymer generator comprises a device for detecting expansion and compression states. The device comprises at least one acceleration sensor. | 12-13-2012 |
20130176050 | DATA INTERFACE HAVING AN INTRINSICALLY SAFE, INTEGRATED ERROR DETECTION - An intrinsically safe digital circuit has at least two output signals and at least four input signals for detecting a potential error in the circuit and/or in one of its input signals, the at least four input signals forming two input signal pairs inverted in a double-track manner, and the at least two output signals forming an output signal pair inverted in a double-track manner. The output signal pair transmits a piece of information which is identical to the one of an input signal pair, when the error is not present. | 07-11-2013 |
20140293041 | Method for Sensor Image Detection and Use of Such a Method in an Electrical Tool - A method facilitates sensor image detection of a work line that is provided on a workpiece and is to be followed with a working tool of a working device that is equipped with an image detection apparatus. The method includes detecting an image section that is adjacent to the working tool as a halftone image in relation to the working tool applied to the workpiece in a region of the working line, aligning a position of the working device approximately to the working line, and evaluating the halftone image in terms of image pixels describing the working line and lying in contact with and/or overlapping the working line in order to detect the working line. | 10-02-2014 |
20140347206 | METHOD AND DEVICE FOR ASCERTAINING A MISALIGNMENT OF A RADAR SENSOR OF A VEHICLE - A method for ascertaining a misalignment of a radar sensor of a vehicle ascertains a misalignment angle of the misalignment using a weighted averaging of calculated differences between first and second angles of radar reflectors relative to various axes. Also described is a device for ascertaining this misalignment. | 11-27-2014 |
20150025824 | Method for Monitoring a Battery - A method is described for monitoring a battery, and a battery and a system for carrying out the method in connection with such a battery. A number of sensors are assigned to the battery, the sensors being connected serially to one another and to a control unit via a data line; at least one of the sensors putting in each case at least one data word on the data line. | 01-22-2015 |