Electronic system and its warning device

Abstract

The invention discloses a warning device, which comprises a first detection unit and a control unit, wherein the first detection unit is equipped with an isolation circuit, a first enable circuit, a second enable circuit and an output circuit, the isolation circuit receives input signal and produces a conditioning signal according to the input signal, the first enable circuit receives the conditioning signal and produces a first enable signal according to the conditioning signal, and the second enable circuit receives the first enable signal and produces a second enable signal according to the first enable signal. The output circuit receives the second enable signal and outputs a first detection signal according to the second enable signal, and the control unit receives the first detection signal and outputs a control signal according to the first detection signal. When the first detection signal is located in an abnormal state, the control signal controls an electronic device to locate in a standby mode.

Description

technical field [0001] The invention relates to an electronic system and its warning device. Background technique [0002] The functional requirements of electronic equipment are getting higher and higher, and the accessory equipments required are also increasing to meet the multi-functional requirements. Usually, the processor controls the electronic equipment of the center, which is used for driving, controlling, detecting, indicating, warning and communication transmission. If the processor fails or the hardware is damaged due to external unclear factors, the electronic device cannot control the operation of its peripheral peripheral devices, such as the inability to control the operation of the radiator, resulting in the inability to effectively dissipate heat. Even in serious cases, it will cause electronic equipment to crash. [0003] In order to improve the above situation, an alarm device is usually installed in the electronic equipment to generate an alarm signal ...

AI Technical Summary

Problems solved by technology

[0012] However, when the processor 12 is in an abnormal state because of open circuit or high power supply (high to Vdd), the state signal S02 is high level, so that the warning device 11 outputs a low level warning signal S03, causing the client system end 13 Judging that the processor 12 is still in a normal state, thus causing misjudgment

[0013] The above misjudgment occurs because the warning device 11 cannot clearly determine which device is in an abnormal state, so that the processor 12 cannot effectively control the operation of the fan 14, causing the system 1 to crash.

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