Class / Patent application number | Description | Number of patent applications / Date published |
324688000 | Including a guard or ground electrode | 20 |
20080211519 | CAPACITANCE SENSOR - A code-type sensor for detecting a change in capacitance includes a plurality of detection electrodes for detecting a change in capacitance, a shield electrode surrounding the plurality of detection electrodes so as to restrict a detection range of the capacitance and having an opening in a direction of detection, and a contact detecting electrode for detecting contact disposed along a longitudinal direction of the sensor. The detection electrodes are disposed at a position close to the opening in the shield electrode and at a position far from the opening in the shield electrode. The contact detecting electrode is disposed on a back side in the direction of detection of the shield electrode. The respective detection electrodes are integrally connected to each other in such a way as to be held in a separate state, the detection electrodes and the shield electrode are integrally connected to each other in such a way as to be held in a separate state, and the shield electrode and the contact detecting electrode are kept in such a way as to be held in a separate state across a clearance in a natural state and are brought into contact with each other when the sensor is pressed in the direction of detection by contact of an object. | 09-04-2008 |
20080231292 | Device and Method for Capacitive Measurement by a Floating Bridge - A device for capacitive measurement by a floating bridge, including: a sensor module including at least one measuring electrode and at least one guard electrode arranged close to a target connected to a general earth, at least one integrated circuit for capacitive measurement, provided with a guard to which the guard electrode is connected, having an input connected to the measuring electrode, a guard connected to the reference earth of the integrated circuit, an excitation output connected to the general earth, a measurement output, and structure for supplying the integrated circuit for capacitive measurement in floating mode. | 09-25-2008 |
20090001999 | Proximity Sensor with Connection Hole, and Method for Manufacturing the Same - The present disclosure relates to a capacitive sensor film ( | 01-01-2009 |
20090033343 | Capacitive sensing apparatus that uses a combined guard and sensing electrode - A capacitive sensing apparatus includes capacitive sensor electrodes, and a combined guard and sensing electrode that is disposed proximate to the capacitive sensor electrodes. The combined guard and sensing electrode has at least a first operating mode and a second operating mode. In the first operating mode, the combined guard and sensing electrode can detect an object at a distance that is greater than the distance at which the object can be sensed by the capacitive sensor electrodes. In the second operating mode, the combined guard and sensing electrode can electrically guard the capacitive sensor electrodes. | 02-05-2009 |
20090045824 | PROXIMITY SENSOR WITH AN EDGE CONNECTION, AND METHOD FOR MANUFACTURING THE SAME - A capacitive proximity sensor is described for mounting to a body for sensing external objects. The sensor comprises a dielectric film substrate ( | 02-19-2009 |
20090079444 | APPARATUS AND METHOD OF CAPACITIVELY SENSING OPERATOR PRESENCE FOR A STUMP CUTTER - An operator detection and presence device includes a conductive sensor and a guard electrode. The sensor and electrode are physically located and electrically connected in a manner which helps the detection circuit measure if an operator's hand is on the handle or if the change in capacitance is due to water. The sensor and electrode are preferably physically located in the handle spaced apart from one another, where the sensor is located in an area that the operator will touch. The electrode is located in an area that the operator will not generally touch. A detection circuit is connected to the sensor and electrode for measuring whether the capacitance of the sensor has changed. The electrode is used to avoid false detections and/or the ability to detect of operator presence. | 03-26-2009 |
20090206852 | METHODS AND SYSTEMS FOR GUARDING A CHARGE TRANSFER CAPACITANCE SENSOR FOR PROXIMITY DETECTION - Methods, systems and devices are described for determining a measurable capacitance for proximity detection in a sensor having a plurality of sensing electrodes and at least one guarding electrode. A charge transfer process is executed for at least two executions. The charge transfer process includes applying a pre-determined voltage to at least one of the plurality of sensing electrodes using a first switch, applying a first guard voltage to the at least one guarding electrode using a second switch, sharing charge between the at least one of the plurality of sensing electrodes and a filter capacitance, and applying a second guard voltage different from the first guard voltage to the at least one guarding electrode. A voltage is measured on the filter capacitance for a number of measurements equal to at least one to produce at least one result to determine the measurable capacitance for proximity detection. | 08-20-2009 |
20100283487 | SYSTEM AND METHOD FOR SENSING VOLTAGE IN MEDIUM-TO-HIGH VOLTAGE APPLICATIONS - A system and method for measuring voltage of a medium to high voltage line conductor is disclosed. The system includes an electrical insulator having a surface and an edge, the surface having an opening therein to allow passage of a line conductor therethrough in a direction generally perpendicular to the surface. The system also includes first and second electrodes positioned about the opening on the surface of the electrical insulator and spaced apart from one another to provide a common capacitive divider signal indicative of a voltage potential of the line conductor. | 11-11-2010 |
20100308847 | METHODS AND SYSTEMS FOR GUARDING A CHARGE TRANSFER CAPACITANCE SENSOR FOR PROXIMITY DETECTION - Methods, systems and devices are described for determining a measurable capacitance for proximity detection in a sensor having a plurality of sensing electrodes and at least one guarding electrode. A charge transfer process is executed for at least two executions. The charge transfer process includes applying a pre-determined voltage to at least one of the plurality of sensing electrodes using a first switch, applying a first guard voltage to the at least one guarding electrode using a second switch, sharing charge between the at least one of the plurality of sensing electrodes and a filter capacitance, and applying a second guard voltage different from the first guard voltage to the at least one guarding electrode. A voltage is measured on the filter capacitance for a number of measurements equal to at least one to produce at least one result to determine the measurable capacitance for proximity detection. | 12-09-2010 |
20110140721 | CONTACTLESS CONDUCTIVITY DETECTOR - The contactless conductivity detector in one embodiment includes a microfluidic chip having a channel ( | 06-16-2011 |
20110193574 | CAPACITIVE SENSING SYSTEM - A capacitive sensing system, comprising a sensor having thin film structure, the thin film structure comprising a sensor having a first insulating layer and a first conductive film comprising a sensing electrode formed on a first surface of the first insulating layer and a second conductive film comprising a back guard electrode. The back guard electrode is formed in a single plane and comprises a peripheral portion in the same plane, and is disposed on a second surface of the first insulating layer and a first surface of a second insulating layer or protective layer. The peripheral portion of the back guard electrode extends beyond the sensing electrode to form a side guard electrode which substantially or completely surrounds the sensing electrode. | 08-11-2011 |
20110254572 | CAPACITANCE-TYPE SENSOR - To measure the distance between a sensing target and sensors accurately by suppressing differences in amount of change in outputs from sensors and differences in initial capacitances thereof and detect the sensing target highly accurately, capacitance-type sensor includes: sensor electrodes configuring a sensor electrode group; and a pair of guard electrodes. The sensor electrodes are driven being supplied with a sensor potential or a guard potential, and the guard electrodes are driven being supplied with the guard potential. Even when the outermost sensor electrode of the sensor electrode group is activated, the amount of change in the outputs from the sensor electrodes configuring the sensor electrode group and their capacitance values can be made substantially uniform because the guard electrodes are driven at the guard potential. | 10-20-2011 |
20120187965 | CAPACITIVE DETECTION HAVING FUNCTION INTEGRATION - A capacitive measurement device includes: at least one measurement electrode having an active surface; at least one guard made from an electrically conductive material placed adjacent to the measurement electrode(s), the guard being excited up to an alternating electric potential substantially identical to that of the measurement electrodes; and a first electronic device for exciting the electrode(s) and processing the measurement signals from the capacitive coupling of the electrode(s) to an object placed adjacent thereto, the electronic device being at least partially referenced to the electric potential of the guard. The measurement device further includes apparatus for performing another function, placed adjacent to the active surface, and a second electronic device provided for monitoring the apparatus for performing another function, the second electronic device being at least partially referenced to the electric potential of the guard. | 07-26-2012 |
20130015868 | CAPACITANCE SENSING CIRCUITS, METHODS AND SYSTEMS HAVING GROUND INSERTION ELECTRODES - A capacitance sensing system can include a plurality of transmit (TX) electrodes disposed in a first direction; a plurality of first electrodes disposed in a second direction and coupled to the TX electrodes by a mutual capacitance, and coupled to a capacitance sense circuit when at least one TX electrode receives a transmit signal; and a plurality of second electrodes structures, interspersed with the first electrodes and coupled to a ground node at least while the one TX electrode receives the transmit signal. | 01-17-2013 |
20130069674 | APPARATUS FOR MEASURING A RADIUS OF A WORKPIECE - An apparatus for measuring a workpiece includes a capacitance probe mounted to a probe housing and a non-conductive spacer. The capacitance probe includes a probe tip with a sensor surface that emits an electric field. The non-conductive spacer extends between a probe contact surface and a workpiece contact surface. The probe contact surface covers the sensor surface, and the workpiece contact surface contacts the workpiece during the measuring of the radius. | 03-21-2013 |
20130300440 | CAPACITIVE TOUCH SENSOR AND FABRICATION METHOD THEREOF AND CAPACITIVE TOUCH PANEL - A capacitive touch sensor includes multiple first-axis traces, multiple second-axis traces, an insulation layer and multiple metal traces. Each first-axis trace includes multiple first touch-sensing pads and first connecting lines connected therebetween. Each second-axis trace includes multiple second touch-sensing pads and second connecting lines connected therebetween. At least one of the first connecting line and the second connecting line is a metal printing line. | 11-14-2013 |
20130328577 | CAPACITANCE-TYPE OCCUPANT DETECTION SENSOR - A capacitance-type occupant detection sensor of the present disclosure detects a vehicle occupant on a seat based on a difference of capacitance between a sensor body and a reference electric potential. The sensor body includes a main electrode and a parallel electrode. The parallel electrode is disposed in parallel with the main electrode with a gap interposed therebetween and has a detection voltage applied thereto. The main electrode and the parallel electrode each have a base material, a first electrode member disposed on the base material, and a second electrode member disposed on the base material to cover the first electrode member, where the second electrode member has an electric conductivity that is lower than the first electrode member. The first electrode member is disposed on a lateral perimeter of the second electrode member to surround a center of the second electrode member. | 12-12-2013 |
20140049276 | CAPACITIVE SENSING SYSTEM - The invention relates to a lithography system. The lithography system has a projection lens system and a capacitive sensing system. The projection lens system is provided with a final projection lens. The capacitive sensing system is arranged for making a measurement related to a distance between the final projection lens and a target. The capacitive sensing system includes at least one capacitive sensor. Additional, the capacitive sensing system is provided with a flexible printed circuit structure and at least one integrated flex print connector. The at least one sensor is located in the flexible printed circuit structure. The flexible printed circuit structure has a flexible base provided with conductive electrodes for the at least one sensor and conductive tracks. The conductive tracks extend from the electrodes along the at least one integrated flex print connector. | 02-20-2014 |
20140285223 | CAPACITANCE TYPE OCCUPANT DETECTION SENSOR - A capacitance type occupant detection sensor includes a capacitive sensor, a reference electrode, a voltage application part, a current detector, a capacitance calculator, and a determination part. The capacitive sensor has a main electrode and is placed to a vehicle seat. The reference electrode is applied with reference voltage. The voltage application part applies detection voltage to the main electrode. The current detector detects detection current flowing through the main electrode. The capacitance calculator calculates a first capacitance between the main electrode and the reference electrode. The determination part determines an occupant of a vehicle. The capacitive sensor has a sub electrode. The determination part switches between an occupant detection mode and a wet detection mode. The capacitance calculator calculates first conductance, a second conductance, and a third conductance. The determination part determines whether the occupant exists and whether the vehicle seat is wet. | 09-25-2014 |
20150123682 | Electrode Configuration for Position Detection and Method for Position Detection - Provided is a method for detecting a position of an object relative to an electrode configuration with at least three electrodes, wherein a first electrode substantially is arranged parallel or concentrically to a second electrode, a third electrode is arranged in an acute angle or excentric relative to the first electrode, the first electrode is loaded with a first generator signal, and wherein the second electrode may be loaded with a second generator signal. The second generator signal preferably is inverse with respect to the first generator signal. In addition, provided for the method is a suitable electrode configuration with at least three electrodes. | 05-07-2015 |