Sensing the ingress of water into a vehicle

1. A monitoring system for improving safety of passengers by sensing an ingress of water into a vehicle, comprising:

a processor; and

a memory storing instructions that, when executed by the processor, cause the processor to:

acquire, from a radar of the vehicle, radar data about a passenger cabin of the vehicle;

determine a current state of the passenger cabin according to the radar data, including determining a height of water in the passenger cabin when present according to the radar data by identifying a presence of the water according to a signature embodied in the radar data and an extent of coverage of the water within the passenger cabin, the signature indicating a difference in density of a volume of the passenger cabin; and

responsive to identifying that the current state indicates an ingress of the water into the passenger cabin, generate a response to the ingress of the water.

2. The monitoring system of claim 1 , wherein the instructions to determine the current state include instructions to analyze the radar data according to a detection model that identifies when at least a portion of the passenger cabin is submerged in water.

3. The monitoring system of claim 1 , wherein the instructions to determine the current state include instructions to determine whether the vehicle encountered an emergency event, including one of: a collision, a disabling event, and an area of high water, and

wherein the instructions to identify that the current state indicates an ingress of water into the passenger cabin include instructions to determine whether the vehicle is submerged and a time that the vehicle has been submerged.

4. The monitoring system of claim 1 , wherein the instructions to determine the current state include instructions to identify a position of a passenger within the passenger cabin from the radar data, including determining characteristics about the passenger and whether the passenger is seated in a child safety seat, and

wherein the characteristics about the passenger include an age of the passenger, and a seat position of the passenger in the vehicle.

5. The monitoring system of claim 1 , wherein the instructions to generate the response include instructions to acquire additional data about the vehicle including acquiring images of a passenger, a current condition of the passenger, and a time the passenger has been in the vehicle submerged,

wherein the instructions to generate the response include instructions to control a vehicle system, including transmitting an alert to a vehicle owner, communicating vehicle data to an emergency service that identifies a number of passengers in the vehicle and characteristics of the passengers indicating at least a position of the passengers in the vehicle, unlocking a door of the vehicle, unlatching a seatbelt of the passenger, and opening a window of the vehicle.

6. The monitoring system of claim 1 , wherein the instructions to determine the current state include instructions to collect vehicle data, including at least one of: a location of the vehicle, a last known speed of the vehicle, whether the vehicle encountered a collision, and an angle of entry into the water, and

wherein the instructions to generate the response include instructions to transmit the vehicle data to an emergency service.

7. The monitoring system of claim 1 , wherein the radar is one of a millimeter-wave (MMW) radar, and an ultra-wideband (UWB) radar.

8. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors, cause the one or more processors to:

acquire, from a radar of a vehicle, radar data about a passenger cabin of the vehicle;

determine a current state of the passenger cabin according to the radar data, including determining a height of water in the passenger cabin when present according to the radar data by identifying a presence of the water according to a signature embodied in the radar data and an extent of coverage of the water within the passenger cabin, the signature indicating a difference in density of a volume of the passenger cabin; and

responsive to identifying that the current state indicates an ingress of the water into the passenger cabin, generate a response to the ingress of the water.

9. The non-transitory computer-readable medium of claim 8 , wherein the instructions to determine the current state include instructions to analyze the radar data according to a detection model that identifies when at least a portion of the passenger cabin is submerged in water.

10. The non-transitory computer-readable medium of claim 8 , wherein the instructions to determine the current state include instructions to determine whether the vehicle encountered an emergency event, including one of: a collision, a disabling event, and an area of high water, and

wherein the instructions to identify that the current state indicates an ingress of water into the passenger cabin include instructions to determine whether the vehicle is submerged and a time that the vehicle has been submerged.

11. The non-transitory computer-readable medium of claim 8 , wherein the instructions to determine the current state include instructions to identify a position of a passenger within the passenger cabin from the radar data, including determining characteristics about the passenger and whether the passenger is seated in a child safety seat, and

wherein the characteristics about the passenger include an age of the passenger, and a seat position of the passenger in the vehicle.

12. A method, comprising:

acquiring, from a radar of a vehicle, radar data about a passenger cabin of the vehicle;

determining a current state of the passenger cabin according to the radar data, including determining a height of water in the passenger cabin when present according to the radar data by identifying a presence of the water according to a signature embodied in the radar data and an extent of coverage of the water within the passenger cabin, the signature indicating a difference in density of a volume of the passenger cabin; and

responsive to identifying that the current state indicates an ingress of the water into the passenger cabin, generating a response to the ingress of the water.

13. The method of claim 12 , wherein determining the current state includes analyzing the radar data according to a detection model that identifies when at least a portion of the passenger cabin is submerged in water.

14. The method of claim 12 , wherein determining the current state includes determining whether the vehicle encountered an emergency event, including one of: a collision, a disabling event, and an area of high water, and

wherein identifying that the current state indicates an ingress of water into the passenger cabin includes determining whether the vehicle is submerged and a time that the vehicle has been submerged.

15. The method of claim 12 , wherein determining the current state includes identifying a position of a passenger within the passenger cabin from the radar data, including determining characteristics about the passenger and whether the passenger is seated in a child safety seat, and

wherein the characteristics about the passenger include an age of the passenger, and a seat position of the passenger in the vehicle.

16. The method of claim 12 , wherein generating the response includes acquiring additional data about the vehicle including acquiring images of a passenger, a current condition of the passenger, and a time the passenger has been in the vehicle submerged,

wherein generating the response includes controlling a vehicle system, including transmitting an alert to a vehicle owner, communicating vehicle data to an emergency service that identifies a number of passengers in the vehicle and characteristics of the passengers indicating at least a position of the passengers in the vehicle, unlocking a door of the vehicle, unlatching a seatbelt of the passenger, and opening a window of the vehicle.

17. The method of claim 12 , wherein determining the current state includes collecting vehicle data, including at least one of: a location of the vehicle, a last known speed of the vehicle, whether the vehicle encountered a collision, and an angle of entry into the water, and

wherein generating the response includes transmitting the vehicle data to an emergency service.