Self checking implementation method of vehicle-mounted remote monitoring terminal

The invention relates to a self checking implementation method of a vehicle-mounted remote monitoring terminal. The method is characterized by comprising GPS (Global Position System) self checking, speaker self checking, power supply self checking, airbag signal self checking, FSK (Frequency Shift Keying) self checking, CAN (Controller Area Network) self checking and internal memory self checking of the terminal, wherein the GPS self checking comprises reading the working voltage and current of a GPS antenna through an ADC (Analog To Digital Converter) of an MCU (Micro Controller Unit) of the terminal, and determining whether the antenna is in a certain state of normal, broke off and short circuit states according to the voltage and the current; the speaker self checking comprises sending a signal from the MCU of the terminal, the ADC of the MCU reading the working current of a power amplifier of the speaker, and determining the state of the speaker according the current; and the internal memory self checking comprises reading and writing several specific regions in the memory every time when the terminal is initialized, and if an error arises, the memory reporting an error interrupt, and the MCU determining whether a bad block exists in the memory depending on the interrupt. By adopting the self checking implementation method provided by the invention, self checking of the vehicle-mounted remote monitoring terminal can be realized, the normal operation of the terminal is ensured, and the stability of the system is improved.