Method and device for power management and deadlock protective control of vehicle-mounted positioning and tracking equipment
A technology of power management and control method, applied in the direction of power consumption device, data reset device, current collector, etc., can solve the problems of automatic startup of communication module, terminal can not be turned on, and long startup time of communication module, etc., so as to delay battery exhaustion time. , avoid logical conflict, avoid the effect of frequent switching
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[0052] Such as figure 1 As shown, a power management and anti-crash control method for a vehicle positioning tracking device includes the following steps:
[0053] Step 101, power-on initialization;
[0054] Step 102, the initial power-on delay, after the delay, the single-chip microcomputer turns on the DC-DC circuit and each LDO;
[0055] Step 103, waiting for the watchdog pulse;
[0056] Step 104, after the MCU receives the watchdog pulse, the watchdog is turned on;
[0057] Step 105, judge whether the watchdog is normal, if yes, execute step 110, if no, execute step 106;
[0058] Step 106, restart after crash;
[0059] Step 107, closing the first and third LDOs;
[0060] Step 108, waiting for the set time;
[0061] Step 109, turn on the first and third LDOs, and return to step 102;
[0062] Step 110, the first comparator detects whether the sampling voltage of the external vehicle power supply is lower than the power supply voltage of the single-chip microcomputer, ...
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