Patent ID: 11906008
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A brake pad state estimation device that estimates a brake pad state including at least one of a wear volume and a temperature of a brake pad of a vehicle,
the brake pad state estimation device comprising:
a brake pressure sensor that detects brake pressure of the vehicle;
a wheel speed sensor that detects a vehicle speed of the vehicle;
a processor; and
a storage, wherein
the processor is programmed to execute:
an information acquisition process acquiring sensor detection information that includes the vehicle speed detected by the wheel speed sensor and the brake pressure detected by the brake pressure sensor;
a brake pad state calculation process calculating the brake pad state based on the sensor detection information during braking of the vehicle;
an information output process storing a result of calculation of the brake pad state in the storage and/or transmitting the result of calculation of the brake pad state to an outside of the vehicle; and
processing frequency control that variably sets a processing frequency of at least one of the brake pad state calculation process and the information output process, and

in the processing frequency control, the processor is further programmed to set the processing frequency in a case where the vehicle speed is lower to be lower than the processing frequency in a case where the vehicle speed is higher, or to set the processing frequency in a case where the brake pressure is lower to be lower than the processing frequency in a case where the brake pressure is higher.