JPWO2021225865A5

JPWO2021225865A5 -

Info

Publication number: JPWO2021225865A5
Application number: JP2022567328A
Authority: JP
Publication date: 2024-05-13

Claims

A vehicle,
The main body,
an interior portion disposed within the body and including a user interface;
A wheel assembly;
a speed sensor configured to sense a rotational speed of the wheel assembly and provide speed sensor data based on the rotational speed;
a tire pressure sensor configured to sense tire pressure on the wheel assembly and provide tire pressure data;
a first sensor configured to identify a wet road surface and provide weather data;
a multi-mode outward-looking camera configured to selectively operate in at least one of a visual mode and an infrared mode;
a temperature sensor configured to provide temperature data;
a controller communicatively coupled thereto; the speed sensor , the first sensor, the tire pressure sensor, the multi-mode outward-facing camera, the temperature sensor, and the controller communicatively coupled thereto;
The controller comprises:
receiving the weather data;
Identifying from the weather data that the vehicle is traveling on a wet surface;
receiving the speed sensor data;
determining a ground speed of the vehicle from the speed sensor data;
receiving the tire pressure data;
determining the tire pressure of the wheel assembly from the tire pressure data;
determining a hydroplaning speed based on the tire pressure of the wheel assembly determined from the tire pressure data ;
determining that the ground speed exceeds the hydroplaning speed;
outputting a hydroplaning warning at the user interface based on the determination that the ground speed exceeds the hydroplaning speed;
receiving the temperature data;
Identifying, based on the temperature data, that the external temperature indicates an increased risk of freezing;
The vehicle is configured to set the multi-mode outward-facing camera to the infrared mode based on the identification of an increased risk of icing.

The vehicle of claim 1, wherein the hydroplaning speed in miles per hour is determined by multiplying the square root of the tire pressure in pounds per square inch by a first factor.

The vehicle of claim 2 , wherein the first factor is a predetermined factor.

The vehicle of claim 2 , wherein the first factor has a value of nine.

The vehicle is an autonomous vehicle, and the controller is
The vehicle of claim 1 , further configured to reduce the ground speed of the vehicle based on the determination that the ground speed exceeds the hydroplaning speed.

The vehicle further comprises a Global Positioning System (GPS) sensor configured to output GPS data, and the controller further comprises:
receiving the GPS data;
determining a GPS speed of the vehicle based on the GPS data;
Comparing the GPS speed to the ground speed;
determining an amount of tire wear on the wheel assembly based on the comparison of the GPS speed to the ground speed;
determining that the amount of wear exceeds a threshold amount;
The vehicle of claim 1 , further configured to output a tire wear warning at the user interface based on the determining that the amount of wear exceeds the threshold amount.

The vehicle of claim 6 , wherein the determining that the amount of wear exceeds the threshold amount includes determining that the GPS speed is greater than the ground speed by a threshold amount.

The vehicle of claim 6 , wherein the hydroplaning speed is adjusted based on the amount of wear.

The vehicle of claim 6 , wherein the ground speed is determined further based on the tire pressure data.

The vehicle is
The vehicle of claim 1 , further comprising a communications module configured to receive communications data from a third party.

The vehicle of claim 10 , wherein the identification that the vehicle is traveling on a wet surface is further based on the communication data.

The controller:
receiving the communication data ;
Identifying that the communication data is received from a pedestrian ;
Identifying the presence of the pedestrian near the vehicle;
The vehicle of claim 10 , further configured to output a pedestrian warning to the user interface.

The vehicle of claim 12 , wherein the communication data is generated by a mobile device associated with a pedestrian.

A non-transitory machine-readable medium, comprising:
receiving weather data from a first sensor;
Identifying from the weather data that the vehicle is traveling on a wet surface;
receiving speed sensor data from a speed sensor of the vehicle;
determining a ground speed of the vehicle from the speed sensor data;
receiving tire pressure data from a tire pressure sensor of a wheel assembly of the vehicle;
determining a tire pressure for the wheel assembly from the tire pressure data;
determining a hydroplaning speed based on the tire pressure of the wheel assembly determined from the tire pressure data;
determining that the ground speed exceeds the hydroplaning speed;
outputting a hydroplaning warning at a user interface of the vehicle based on the determination that the ground speed exceeds the hydroplaning speed;
Receives temperature data from a temperature sensor;
Identifying, based on the temperature data, that the external temperature indicates an increased risk of freezing;
A non-transitory machine-readable medium configured to cause a vehicle controller to perform an operation including setting a multi-mode camera, the multi-mode camera configured to selectively operate in at least one of a visual mode and an infrared mode, to the infrared mode based on the identification of an increased risk of icing.

15. The non-transitory machine-readable medium of claim 14, wherein the vehicle is an autonomous vehicle.