Embedded satellite-borne computer watchdog circuit and working method thereof
An on-board computer and watchdog technology, applied in the field of watchdog circuits, can solve problems such as the failure of the watchdog clearing operation and the reduction of software operating efficiency, so as to reduce the number of clearing operations, reduce the number of operations, and improve the The effect of operating efficiency
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[0028] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.
[0029] Such as image 3 As shown, the embedded star-borne computer watchdog circuit disclosed by the present invention includes a watchdog counting circuit, a dog clearing pulse width generating circuit, a dog bite counting circuit, a clearing watchdog signal combining logic circuit and a resistance-capacitance network; The input terminal CLR of the clear dog pulse width generating circuit communicates with the application software for writing operation of the application software; the output terminals of the clear dog pulse width generating circuit are respectively connected to the input terminals of the logic circuit for clearing the watchdog signal through a jumper wire The output end of the combination logic circuit for clearing the watchdog signal is connected with the dog bite times cou...
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