Centre National De La Recherche Scientifique

Valeo Climatisation

Georgia Tech Lorraine

Valeo Systemes Thermiques

Psa Automobiles Sa

Peugeot Citroen Automobiles Sa

Vincent Aubry

Bertrand Puzenat

Christophe Bruzy

Laurent Rede

Yacine Halfaya

Abdallah Ougazzaden

Jean-Paul Salvestini

Paul Voss

Chris Bishop

Denis Dumur

Karine Pajot

Bruno Pintat

A method and a sensor for detecting or measuring at least one specific component among a plurality of components present in a gaseous or liquid mixture by a sensor having at least one capturing cell with a high-electron mobility transistor including a source and a drain with a grid inserted between the source and the drain, a voltage being applied between the source and the drain, and a current intensity in the capturing cell being recorded. The voltage between the source and the drain is controlled, which varies the intensity of the current, the voltage being controlled according to a voltage model predetermined by experience in order to provide a profile with an intensity which is characteristic of said at least one specific component.

Detection sensor comprising a selective high-electron-mobility transistor for detecting a gaseous or liquid component

A wireless sensor for detection or measurement of at least one specific component present in a gaseous or liquid mixture, the gas sensor including at least one sensor cell, having a high-electron-mobility transistor having a source and a drain with a gate intercalated between source and drain. The at least one sensor cell having a high-electron-mobility transistor is associated with at least one split-ring resonator with at least one respective slit and connected between, on the one hand, the drain and on the other hand, the gate or the source of the at least one sensor cell, the sensor detecting a change in the intensity or the frequency of resonance as a function of the presence and/or of the concentration of the at least one specific component in the gaseous or liquid mixture.

Detection sensor having a sensor cell with a high-electron mobility transistor and ring resonator(s)

In a motor vehicle air conditioning installation comprising a central control unit (), a computer network () connected to the central control unit () and a plurality of peripherals (10, 10, 10, . . . , 10) connected to nodes (N, N, N, . . . , N) of the computer network, the peripherals are connected in series via a common conductor (). The installation comprises means () for inputting at the level of each peripheral an electric signature on a common conductor, means () for detecting an electric signal depending upon the electric signatures of the peripherals situated upstream on the common conductor (), means for generating a data item representing the relative position of the peripheral on the basis of the electric signal detected, and means for identifying the node of the network to which it is connected on the basis of the relative position data item generated. The identification of the node of the network permits the assignment of an address or monitoring of the connection of the peripheral from the central control unit.

Method of identification of the nodes of a computer network in an air conditioning installation of a motor vehicle, and air conditioning installation using the method

In a motor vehicle air conditioning installation comprising a central control unit (), a computer network () connected to the central control unit () and a plurality of peripherals () connected to nodes (N, N, N, . . . , N) of the computer network, the peripherals are connected in series via a common conductor (). The installation comprises means () for inputting at the level of each peripheral an electric signature on a common conductor, means () for detecting an electric signal depending upon the electric signatures of the peripherals situated upstream on the common conductor (), means for generating a data item representing the relative position of the peripheral on the basis of the electric signal detected, and means for identifying the node of the network to which it is connected on the basis of the relative position data item generated. The identification of the node of the network permits the assignment of an address or monitoring of the connection of the peripheral from the central control unit.

Method of identifying nodes in a computer network in a motor vehicle air conditioning installation

A voltage-regulation, protection and filtering assembly ( ) is connected between a power-supply input and an energy output in order to deliver the same security-protected operating voltage to a number of elements ( ) via an energy bus ( ) linked to the energy output. The assembly ( ) further includes an information input for connection to a first information bus ( ), an information output for connection to an information bus ( ) specific to the elements, and a monitoring circuit for transferring, on the specific information bus, the information relating to the said elements flowing on the first information bus, and visa versa.

Energy distribution, especially to elements of a motorvehicle air-conditioning device

Growing community of inventors

Orsay, France

Vincent Aubry