Johnson Controls Technology Company

Johnson Controls Automotive Electronics

Johnson Controls-Saft Advanced Power Solutions LLC

Johnson Controls Automotive Electronics Sas

Serge Hernando

Thierry Pinard

Francis Delaporte

Jean-Pierre Peghaire

Yoann Leblanc

Julien Fouques

A device for locating a vehicle and a method of generating location information are provided. The location device includes or is associated with a satellite-positioning location interface and a dead-reckoning location module. The satellite-positioning location interface and the dead-reckoning location module allow the location device to generate vehicle location information. The vehicle location information is generated by the dead-reckoning location module when the vehicle is detected as being in an area of poor satellite signal reception. A calibration of the dead-reckoning location module is provided when the vehicle is detected as being in an extended area with good satellite signal reception.

Device for locating a vehicle and method of generating vehicle location information

A method for determining an insulation resistance of an electric DC circuit having at least a first and a second terminal includes performing a measurement cycle, verifying whether the change of a measured current exceeds a predetermined change rate, calculating a total insulation resistance, and calculating a first insulation resistance between the first terminal and a reference potential and a second insulation resistance between the second terminal and the reference potential. An insulation resistance measurement circuit is also provided for carrying out the aforementioned method.

Determination of insulation resistance of an electric DC circuit

The system comprises a control unit (), and, on each wheel, a pressure sensor () and an emitter () in order to transmit to the control unit () a pressure signal comprising data for identification of the sensor, and means () for determination of the speeds of rotation of the wheels, in order to associate () with each pressure signal the wheel of the corresponding sensor (), and which comprise means () for comparison of data of speeds of rotation of the wheel, determined in different manners (), by the periods (Ti) of the envelopes for modulation of the signals emitted by the emitters () and by the wheel anti-blocking device ().

System for controlling a vehicle wheel tyre pressure

According to one exemplary embodiment, a system for monitoring the pressure of tires of a motor vehicle with location of the wheels comprises a monitoring element and a pressure sensor. Each pressure sensor is associated with a transmitter with which it transmits to the monitoring element a radio signal comprising sensor identification data. The system comprises a means for determining the phase shift between two radio signals transmitted at two distinct times for each wheel. The system further comprises a means for determining the rotation angle, modulo 2&#x3c0;, traveled by each of the wheels between the two times. The system further comprises a means for comparison between the phase shifts and the rotation angles.

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Cergy, France

Serge Hernando