Device for analysing a passenger compartment of a vehicle

1 . An analysis device for analyzing a passenger compartment of a vehicle in order to detect persons said analysis device comprising:

at least one ultra-wideband transceiver configured to transmit a signal on a wireless communication channel; and

at least one ultra-wideband transceiver configured to receive a signal corresponding to the transmitted signal, to compute at least one impulse response of the wireless communication channel from said received signal, and to transmit said at least one impulse response of the wireless communication channel to an electronic control unit,

wherein said electronic control unit is configured to determine biometric features and volumetric occupancy features of the passenger compartment on the basis of said at least one impulse response of the wireless communication channel,

wherein said electronic control unit is configured to perform a modal decomposition based on a classification of the volumetric occupancy features of the passenger compartment by taking into account a sum of the volumetric occupancy features corresponding to different sub-volumes of the passenger compartment, and

wherein said electronic control unit filters the impulse response using blind deconvolution prior to determining the biometric features and the volumetric occupancy features.

2 . The analysis device as claimed in claim 1 , according to which the electronic control unit transmits the biometric features and/or said volumetric occupancy features to an information processing unit in order for the latter to perform a function determined according to the biometric features and/or said volumetric occupancy features.

3 . The analysis device as claimed in claim 1 , according to which said analysis device comprises an ultra-wideband transceiver configured to transmit a signal and at least two transceivers configured to receive said signal corresponding to said transmitted signal.

4 . The analysis device as claimed in claim 1 , according to which an ultra-wideband transceiver is configured to be in transmission mode or in reception mode.

5 . The analysis device as claimed in claim 1 , according to which said electronic control unit is moreover configured to determine the presence of at least one person or the absence of persons in the passenger compartment on the basis of said volumetric occupancy features of the passenger compartment.

6 . The analysis device as claimed in claim 1 , according to which the volumetric occupancy features of the passenger compartment are a distribution in space, and/or an age category.

7 . The analysis device as claimed in claim 6 , according to which a distribution in space comprises one or more of:

an unoccupied passenger compartment,

an occupancy of the front-right space,

an occupancy of the front-left space,

an occupancy of the rear-right space, and

an occupancy of the rear-left space.

8 . The analysis device as claimed in claim 6 , according to which an age category comprises one or more of:

a baby,

a child, and

an adult.

9 . The analysis device as claimed in claim 1 , according to which said electronic control unit comprises a classifier.

10 . The analysis device as claimed in claim 9 , according to which said classifier is configured to receive at the input a portion of said at least one impulse response of the communication channel, and a time index for the time at which said impulse response of the communication channel was computed.

11 . The analysis device as claimed in claim 9 , according to which said classifier is a support vector machine.

12 . The analysis device as claimed in claim 1 , according to which the biometric features are a respiratory rate and/or a heart rate.

13 . The analysis device as claimed in claim 1 , according to which said electronic control unit is moreover configured to determine a state of health of at least one person in the passenger compartment of said vehicle on the basis of said biometric features.

14 . The analysis device as claimed in claim 1 , according to which said electronic control unit is configured to determine said biometric features by a spectral analysis.

15 . An analysis method for analyzing a passenger compartment of a vehicle to detect persons, said analysis method comprising:

transmitting, by at least one first ultra-wideband transceiver, a signal on a wireless communication channel;

receiving, by at least one second ultra-wideband transceiver a signal corresponding to the transmitted signal;

computing, by said at least one second ultra-wideband transceiver at least one impulse response of the wireless communication channel from said received signal;

transmitting by said at least one second ultra-wideband transceiver said at least one impulse response of the wireless communication channel to an electronic control unit;

determining by said electronic control unit biometric features and volumetric occupancy features of the passenger compartment on the basis of said at least one impulse response of the wireless communication channel,

wherein said electronic control unit is configured to perform a modal decomposition based on a classification of the volumetric occupancy features of the passenger compartment by taking into account a sum of the volumetric occupancy features corresponding to different sub-volumes of the passenger compartment, and

wherein said electronic control unit filters the impulse response using blind deconvolution prior to determining the biometric features and the volumetric occupancy features.