The task of the program running monitor running monitor is to monitor whether the CPU runs according to the programmed route; if it is out of control due to interference from radiation or the like, it will be corrected immediately. Common methods are: manual reset method, software trap method and watchdog monitoring method. The manual reset method manually presses the reset button when the system is found. This method is simple, but not timely, and is often only used as an emergency measure.
When the PC flies to these places due to the disturbed bomb, the software traps the CPU to jump to execute the hot start program, and then resume the normal operation of the system according to the operation record. Watchdog (WATCHDOG) monitoring method, which is completed by hardware and software; the hardware has a special watchdog timer, which periodically receives the software reset signal when the program is running normally; if the CPU enters and dies due to interference Loop, the watchdog timer is reset because the reset signal is not available, and a signal to reset the system is generated, forcing the CPU to exit the infinite loop, and the program starts by executing the jump according to the running record.
Data protection data protection is also an auxiliary aspect of anti-jamming measures for digitally controlled electrical machining systems. When the grid voltage drops or momentarily loses power, important data may be confused or lost, so power-down protection must be taken. Data protection, EEPROM protection and RAM protection for uninterrupted power supply.
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