Huawei Technologies Co., Limited

Shenzhen Yinwang Intelligent Technologies Co., Ltd.

Xiujiang Ma

Xuehuan Wang

Chao Li

Bo Xie

Pinhui Chen

Weicai Zeng

Yuanji He

A fault diagnosis method includes detecting a state of a relay device, sending a fault diagnosis trigger signal to the relay device based on the state to enable the relay device to enter a fault diagnosis mode, where the fault diagnosis trigger signal includes one or more of a variable supply voltage value, a transmit/receive control signal, and a diagnosis control signal, detecting a state of the relay device in the fault diagnosis mode, determining a fault code based on the state, and determining a fault based on the fault code.

Fault diagnosis method, electronic device, and storage medium

An emergency call method is applied to a vehicle-mounted communications system. The emergency call method includes a telematics box activating a host function. The host function includes controlling a first transmission node and a peripheral connected to the first transmission node. The telematics box is connected to the first transmission node, and the telematics box performs data transmission with the first transmission node using the host function. The first transmission node is in a master node mode.

Communication method and apparatus, and system

An emergency call method applied to a vehicle-mounted communications system and the method includes a telematics box that activates a host function. The host function includes controlling a first transmission node and a peripheral connected to the first transmission node. The telematics box is coupled to the first transmission node, and the telematics box may perform data transmission with the first transmission node using the host function. The first transmission node is in a master node mode.

Emergency call method and apparatus, and system

Growing community of inventors

Dongguan, China

Xiujiang Ma