Hardware watchdog system

A watchdog, hardware technology, applied in electrical components, response error generation, instruments, etc., can solve problems such as the failure of the main control module to crash, reset, and the failure of the main control module to complete.

Pending Publication Date: 2020-12-15
HISENSE GRP HLDG CO LTD
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  • Abstract
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Problems solved by technology

In this way, when the SCR latch-up effect occurs in the main control module, the reset of the main control module by the watchdog cannot release the SCR latch-up effect of the main control module at all.
That is, ordinary watchdogs cannot solve the crash phenomenon of the main control module due to the SCR latch-up effect.
In addition, the feeding time interval of ordinary watchdogs is currently not greater than 5S. For watchdogs that need to have

Method used

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Embodiment Construction

[0100] In order to have a clearer understanding of the technical features, purpose, and effects of the present invention, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are only used to illustrate the present invention, but are not used to limit the protection scope of the present invention. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without making creative efforts shall all belong to the protection scope of the present invention.

[0101] In the description of the present invention, it should be understood that the numbers themselves, such as "first", "second", etc., are only used to distinguish the described objects, and have no order or technical meaning, and cannot be interpreted as stipulating Or hint at the importance of the object being described.

[0102] In the descri...

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Abstract

The invention relates to the technical field of watchdogs, and discloses a hardware watchdog system, which comprises a power supply module, a main control module, a hardware watchdog module and a power supply control module, wherein the power supply module is used for supplying power to the power supply control module and the hardware watchdog module; the main control module is used for sending apulse signal to the hardware watchdog module; the hardware watchdog module is used for analyzing the received pulse signal and sending a level signal to the power supply control module according to ananalysis result; and the power supply control module is used for supplying power to the main control module and controlling the power-on and power-off of the main control module according to the received level signal. The hardware watchdog system provided by the invention can automatically restart the main control module when the main control module is in various crash states.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a hardware watchdog system. Background technique [0002] The watchdog is a monitoring system that monitors the operation of the monitored system. When the monitored system is not running well, it can reset the monitored system and other operations. [0003] At present, most watchdog circuits only have a reset function, but do not have the function of powering off and restarting the main control module. In this way, when the thyristor latch-up effect occurs in the main control module, the reset of the main control module by the watchdog cannot release the thyristor latch-up effect of the main control module at all. That is, the ordinary watchdog cannot solve the crash phenomenon of the main control module due to the SCR latch-up effect. In addition, the feeding time interval of ordinary watchdogs is currently not greater than 5S. For watchdogs that need to have a cr...

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Application Information

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IPC IPC(8): G06F11/07H03K17/22
CPCG06F11/0757H03K17/22
Inventor 韩雪陈坚波卢保东代苗苗
Owner HISENSE GRP HLDG CO LTD
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