Abstract: An alarm system is used for a vehicle including a fuel pump and an engine. The alarm system includes a measuring device, a computing device and a warning device. The measuring device is used to read a current rotation speed of the engine and respectively measures a plurality of running times of a plurality of rotation speed values of the current rotation speed. The computing device calculates a plurality of consuming times of the fuel pump corresponding to the rotation speed values according to the running times of the rotation speed values, respectively. When an accumulating consuming time accumulated by the consuming times reaches a default critical value, the warning device generates a warning message.

Abstract: An alarm system is used for a vehicle including a fuel pump and an engine. The alarm system includes a measuring device, a computing device and a warning device. The measuring device is used to read a current rotation speed of the engine and respectively measures a plurality of running times of a plurality of rotation speed values of the current rotation speed. The computing device calculates a plurality of consuming times of the fuel pump corresponding to the rotation speed values according to the running times of the rotation speed values, respectively. When an accumulating consuming time accumulated by the consuming times reaches a default critical value, the warning device generates a warning message.

Abstract: An automotive on-board diagnostic (OBD) computer system with an audiovisual guiding function includes an OBD main unit and a transmission connector. The OBD main unit includes a transmission port, a control unit, a receiving unit, a guide light, a sound unit, and a first sensing unit. The transmission connector includes a control module, an illumination unit, a transmitting unit, and a second sensing unit. Once activated, the control module not only turns on the illumination unit to provide illumination light, but also drives the transmitting unit to send a control signal to the receiving unit of the transmission port, in order for the control unit to turn on the guide light and the sound unit according to the control signal. The guiding light and instruction sound provided respectively by the guide light and the sound unit can help the user locate the transmission port.

Abstract: A method for diagnosing breakdown cause of a vehicle is disclosed. In the method, several sound signals are sensed respectively with several sound sensing devices, which are respectively installed at several zones among the vehicle, from the vehicle. A current driving status of the vehicle is obtained through an electrical control unit (ECU) of the vehicle. Determine a sound source of the vehicle according to the sound signals. A breakdown cause of the vehicle is diagnosed according to the sound signals, the current driving status and the sound source.