| Patents for G01P 21 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass (4,237) |
|---|
| 01/13/1994 | DE4321589A1 Fault monitoring system for motor vehicle occupant restraint airbag system - generates fault signal when signals from both reset and state signal generators, at ignition and connection of battery, are received |
| 01/11/1994 | US5277053 Square law controller for an electrostatic force balanced accelerometer |
| 01/06/1994 | WO1994000322A1 Circuitry for monitoring an inductive circuit |
| 01/05/1994 | DE4222057A1 Shock testing machine accelerator e.g. for testing sensor used for vehicle airbag passenger safety system - has acceleration generating device connected to toothed belt and imparting pulse to test object carriage via adjustable flexural rod. |
| 01/05/1994 | DE4221891A1 Measuring angular errors on transducer wheels for measuring vehicle IC engine speed - measuring time of passage of complete transducer wheel to provide reciprocal of speed, dividing by number of segments, and comparing with actual time for passage of one segment to derive correction factor. |
| 01/05/1994 | DE4221196A1 Schaltungsanordnung zur Überwachung einer induktiven Schaltung Circuit arrangement for monitoring an inductive circuit |
| 12/23/1993 | WO1993026026A1 Shock sensor |
| 12/21/1993 | US5272516 Fiber optic rotation sensor including a temperature sensor and logic circuit storing at least two correlation maps |
| 12/09/1993 | WO1993022630A3 Device for testing the operability of a system for detecting heat-radiating particles carried in a particle stream |
| 12/01/1993 | EP0475952B1 Method of calibrating vehicle speed signals |
| 11/30/1993 | US5265472 Process for compensating acceleration sensor errors |
| 11/25/1993 | DE4316263A1 Acceleration sensor self-test appts. for diagnosing vehicle airbag system - applies force by electrostatic, electromagnetic force, or external mechanical vibration, and measures detected acceleration of mass |
| 11/18/1993 | EP0569924A1 Method and device for monitoring a sensor |
| 11/16/1993 | US5261694 Reconfigurable air bag firing circuit |
| 11/11/1993 | WO1993022756A1 Device for testing the operatability of speed-measurement devices used in traffic control |
| 11/11/1993 | WO1993022630A2 Device for testing the operability of a system for detecting heat-radiating particles carried in a particle stream |
| 11/11/1993 | CA2134659A1 Device for testing the operability of speed-measurement devices used in traffic control |
| 10/28/1993 | WO1993021500A1 Method and device in acoustic flow measurement for ensuring the operability of said measurement |
| 10/28/1993 | CA2109948A1 Method and device in acoustic flow measurement for ensuring the operability of said measurement |
| 10/19/1993 | US5253510 Self-testable micro-accelerometer |
| 10/14/1993 | WO1993020452A1 Method of monitoring rpm sensors |
| 10/14/1993 | DE4211622A1 Verfahren zur Überwachung von Drehzahlfühlern Method for monitoring rotational speed sensors |
| 10/12/1993 | US5251469 Calibration system |
| 10/06/1993 | EP0563885A2 Rear-wheel steering apparatus for vehicles |
| 10/06/1993 | EP0563347A1 Process for adapting mechanical tolerances of a pick-up wheel. |
| 10/05/1993 | US5250805 Optical sensing technique providing built in test |
| 09/21/1993 | US5247466 Angular rate detection apparatus, acceleration detection apparatus and movement control apparatus, of moving body |
| 09/21/1993 | US5247465 High resolution converter |
| 09/16/1993 | DE4208000A1 Detecting incorrect teeth count in inductive sensor in vehicle - measuring and comparing wheel speed measurements during acceleration period and generating appropriate warning signal |
| 09/14/1993 | US5244287 Bearing malfunction detecting device |
| 09/07/1993 | US5241850 Sensor with programmable temperature compensation |
| 09/01/1993 | EP0557592A1 Device for calibrating a measuring device |
| 09/01/1993 | EP0557505A1 Crash sensing switch |
| 08/19/1993 | DE4304847A1 Operating safety airbag igniter control unit for motor vehicle passenger - using data processor which continually performs self diagnosis and displays abnormality when fault detected in processor or memory |
| 08/10/1993 | US5233873 Accelerometer |
| 07/27/1993 | US5230331 Hot wire anemometer adapted for insertion in a calibration socket of a pulmonary gas flow monitor |
| 07/06/1993 | US5225768 Field test instrument |
| 07/01/1993 | DE4244264A1 Fault diagnosis device for vehicle passenger safety device, e.g. air bag - uses internally generated diagnostic input signal to evaluate normal or faulty trigger device |
| 07/01/1993 | DE4244262A1 Vehicle collision protection system control circuit - has failsafe processing with analogue and digital signals and with self diagnosis using test signals |
| 06/30/1993 | CN1073763A Vehicle speed odometer calibrator capable of defining K value |
| 05/27/1993 | DE4238264A1 Detector of shaft bearing faults, esp. wear causing axial vibration - has part connected and rotating with shaft, second part attached to fixed mounting, and detects breakage in recessed end region |
| 05/19/1993 | EP0542719A2 A method for establishing a value for the sensitivity of an acceleration sensor |
| 05/18/1993 | US5212640 Automotive control system employing acceleration sensor and fault detecting system therefor |
| 05/13/1993 | DE4135369A1 Bipolar piezoelectric accelerometer with built-in test facility - has upper and lower electrodes in halves for application of test voltage and measurement of deformation |
| 05/11/1993 | US5210692 Process and circuit configuration for analyzing the wheel speed signals for use with an anti-locking or traction slip control |
| 05/05/1993 | EP0540396A1 Anemometer test-bench |
| 05/04/1993 | US5208484 Control system for vehicle safety device |
| 04/29/1993 | DE4235672A1 Power control for motor vehicle traction, e.g. motorcycle - compares pulses from front wheel speed sensor with reference and sets speed accordingly if sensor fails |
| 04/22/1993 | DE4133679A1 Verfahren zur adaption von mechanischen toleranzen eines geberrades A method for adaptation of mechanical tolerances of a wheel encoder |
| 04/21/1993 | EP0537347A1 Acceleration sensor having a self test feature |
| 04/20/1993 | US5203821 Malfunction detector for acceleration sensor |
| 04/20/1993 | US5203199 Controlled acceleration platform |
| 04/15/1993 | WO1993007497A1 Process for adapting mechanical tolerances of a pick-up wheel |
| 04/15/1993 | DE4133426A1 Capacitive sensor circuit providing measurement and function test - has dual mode operation with bridge measurement and separate test voltage for checking functional performance via reference capacitor |
| 04/08/1993 | DE4132414A1 Acceleration sensor with integrated sensitivity monitoring - contains piezoelectric element in one or more main axes, and operation is testable by stimulating flexural beam electrically or mechanically |
| 04/07/1993 | EP0536080A2 Method for measuring liquid flow |
| 04/01/1993 | WO1993006613A1 Crash sensing switch |
| 04/01/1993 | CA2094589A1 Crash sensing switch |
| 03/31/1993 | EP0534366A1 Acceleration sensor |
| 03/30/1993 | US5197326 Arrangement for monitoring rotational speed sensor |
| 03/16/1993 | US5194804 Apparatus for detecting the voltage level of a power source for a speed indication device |
| 03/02/1993 | US5191208 Fiber optic sensor system with a redundancy means and optimized throughout |
| 02/18/1993 | WO1993003385A1 Acceleration sensor and process for its production |
| 02/18/1993 | DE4126107A1 Beschleunigungssensor und verfahren zur herstellung Acceleration sensor and methods for preparing |
| 02/16/1993 | CA1313698C Spacecraft accelerometer auto-alignment |
| 02/11/1993 | DE4225819A1 Measurement circuit representing measured frequency values - contains clock pulse generator, edge detector, gate circuit, digital filter and corrects for display equipment scatter |
| 02/03/1993 | EP0525549A2 Acceleration sensor with self-test, and circuit therefor |
| 02/02/1993 | US5184080 Test apparatus for opto-electronic time based generator of an ignition system |
| 01/21/1993 | WO1993001074A1 Circuit for detecting defects in wheel sensors |
| 01/20/1993 | EP0523862A1 Accelerometer mounting arrangement having reduced temperature dependance |
| 01/20/1993 | EP0523732A2 Acceleration sensor with self-test, and circuit therefor |
| 01/20/1993 | CA2074157A1 Acceleration sensor suitable for self-checking and a self-checking circuit therefor |
| 01/20/1993 | CA2074105A1 Acceleration sensor unit having self-checking function |
| 01/13/1993 | EP0522909A1 Motorised means comprising a tachometer generator configurable as a security method |
| 01/12/1993 | US5179526 Process for correcting the rotational speeds of vehicle wheels determined by wheel sensors |
| 01/12/1993 | US5178013 Impact sensor |
| 01/07/1993 | DE4122484A1 Schaltungsanordnung zur erkennung von radsensordefekten Circuit arrangement for the detection of radsensordefekten |
| 01/05/1993 | US5177370 Impact sensor for vehicle safety restraint system |
| 12/29/1992 | US5174884 Piezoelectricity; detecting physical quantity |
| 12/16/1992 | EP0518501A1 Reconfigurable air bag firing circuit |
| 12/09/1992 | EP0517253A1 Vehicle passenger restraint device for use in automotive vehicle or the like |
| 11/24/1992 | US5166882 System for calibrating a gyro navigator |
| 11/19/1992 | EP0513158A1 Control system |
| 11/17/1992 | US5163325 Self-compensating accelerometer |
| 11/11/1992 | EP0512344A1 Sensor for the automatic activation of a passenger safety device in case of an accident |
| 11/04/1992 | EP0511553A1 Calibration system |
| 10/15/1992 | WO1992017759A1 Method of testing performance of device for measuring physical quantity by using change of distance between electrodes and physical quantity measuring device provided with function of executing this method |
| 09/30/1992 | EP0505423A1 Signal processing circuits |
| 09/24/1992 | DE4209140A1 Impact determination unit for gas cushion systems with detector unit - which detects acceleration caused by motor vehicle and transmits electric signals corresp. to this acceleration and discrimination unit |
| 09/24/1992 | DE4208404A1 Yaw pulse detector for motor vehicle motion controller - contains several acceleration sensors, yaw pulse derivation device and characteristic correction device which corrects for sensor ageing effects and inaccurate sensor positioning |
| 09/22/1992 | US5149925 Quick-response accelerometer |
| 09/17/1992 | DE4108081A1 Setting up longitudinal acceleration sensor for motor vehicle brake balancing - measuring parameters with vehicle facing up and down a slope and deriving null point correction from both values |
| 08/25/1992 | US5140844 Air bag sensor thruster fixture |
| 08/11/1992 | US5138564 Automatic encoder calibration |
| 07/28/1992 | US5133214 Adjustment of scale factor linearity in a servo accelerometer |
| 07/14/1992 | US5130933 Rotation sensing system having sensor malfunction detection |
| 07/01/1992 | EP0492626A2 Zero-point correction device for a gravity-type accelerometer |
| 06/30/1992 | US5126515 Acceleration detecting system |
| 06/04/1992 | DE4134902A1 Arrangement for detecting vehicle impact - contains acceleration and motion sensors whose signals are compared to detect acceleration sensor faults, for use with air bag system |
| 06/02/1992 | US5119300 Method for reliably operating a motor vehicle |