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Software watchdog implementation method and device and computer equipment

A technology of software watchdog and implementation method, which is applied in the field of watchdog, can solve the problems of limited application range, complex system circuit, and inability to distinguish and indicate repeated dog feeding, and achieve the effect of wide application range

Pending Publication Date: 2022-03-18
CHINA TECHENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing watchdog mainly relies on a dedicated watchdog chip, and the system circuit is complex
And there is no indication of accidental feeding of the dog, and no distinction and indication of repeated feeding of the dog
In addition, there are many restrictions on the dog feeding signal, the size of the time window, and the pulse width of the output reset signal, and there are many restrictions on the application of the system and the scope of application is limited

Method used

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  • Software watchdog implementation method and device and computer equipment
  • Software watchdog implementation method and device and computer equipment
  • Software watchdog implementation method and device and computer equipment

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Embodiment Construction

[0065] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0066] The present application will be described in further detail below in conjunction with specific examples, and these examples should not be construed as limiting the scope of protection claimed in the present application.

[0067] The software watchdog implementation method, device and computer equipment of the embodiments of the present application are described below with reference to the accompanying drawings.

[0068] figure 1 It is a flowchart of a method for implementing a software watchdog in an embodiment of the present application, such as figure 1 As shown, the method includes the following steps:

[0069] S1, start the watchdog with a delay, and monitor the dog feeding s...

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Abstract

The invention discloses a software watchdog implementation method and device and computer device.The software watchdog implementation method comprises the steps that starting of a watchdog is delayed, and a dog feeding signal is monitored in real time; when the dog feeding signal is received, judging whether the dog feeding signal is a first dog feeding signal after the watchdog is started; if the signal is the first dog feeding signal after the watchdog is started, setting the central position of the monitoring window at the starting moment of the first dog feeding signal; and after waiting for half window time, resetting the timer of the watchdog, and returning to carry out dog feeding signal monitoring in the next period. According to the software watchdog implementation method and device and the computer equipment, accurate diagnosis and indication of the dog feeding signal can be realized; the size of the time window and the pulse width of the output reset signal can be set at will, the application range is wider, and the precision can reach the microsecond level.

Description

technical field [0001] The present application relates to the field of watchdog technology, in particular to a software watchdog implementation method, device and computer equipment. Background technique [0002] When the automatic control system is disturbed or suddenly unforeseen, it may crash, enter an unknown state and cannot return, or enter an unexpected endless loop. Although the probability is small, it is extremely harmful. At present, the industry generally uses watchdog (WDG) technology to solve such problems. The watchdog technology can give a reset signal when the above-mentioned situation is detected, so that the system can use this signal to automatically return to the normal state. [0003] The watchdog is a timer circuit that includes an input feed signal and an output reset signal. The timer starts counting from zero after it is powered on, and the timer can be cleared by inputting the dog feeding signal, so that the timer starts counting again from zero....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/07
CPCG06F11/0757
Inventor 陈乃奎张春雷马建新张智慧谢逸钦程康周飞张晓冬李萌王成史雄伟陈银杰马洪杰李乐盛先松宁龙飞方劲宇徐靖松
Owner CHINA TECHENERGY
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