Detection signal hardware protection circuit,

Abstract

The invention discloses a detection signal hardware protection circuit. The detection signal hardware protection circuit comprises a reference voltage control circuit used for providing a reference voltage signal of hardware protection, wherein the reference voltage signal is a voltage signal with a controllable size; and a hardware protection circuit, wherein a first input end of the hardware protection circuit is connected with a detection signal used for detecting hardware, and a second input end of the hardware protection circuit is connected with an output end of the reference voltage control circuit for using the reference voltage signal output by the reference voltage control circuit as a protection reference value and controlling the output of the detection signal to protect the hardware. The detection signal hardware protection circuit disclosed by the invention solves the problem that the protection value of the hardware protection circuit in the prior art is a constant value and cannot be randomly modified according to the external environment or the condition per se, and the flexibility and stability of the detection signal hardware protection circuit are improved.

Description

technical field [0001] The invention relates to the technical field of circuit protection, in particular to a detection signal hardware protection circuit. Background technique [0002] In power circuits such as electrical control, there are often some unstable factors, so it is necessary to design a protection circuit to prevent such unstable factors from affecting the circuit effect. As an important part of the power circuit, the protection circuit is widely designed and used. [0003] In the prior art, the detection signal hardware protection circuit is used to protect when the detection signal exceeds a certain protection value set by the hardware, and will send out a protection signal, so the circuit plays a vital role in the hardware control system. However, in traditional hardware circuit design, the protection value is set as a fixed value, which cannot be revised at any time according to the external environment and its own situation, which has great limitations. ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a detection signal hardware protection circuit to at least solve the problem that the protection value of the hardware protection circuit in the prior art is a fixed value and cannot be revised at any time according to the external environment and its own situation

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