Electronic instrument control signal output circuit with protection function and its realization method

Abstract

The invention relates to the technology of electronic circuit design and aims at providing an electronic device control signal output circuit with a protection function and a realization method. The circuit comprises a microprocessor, the protection circuit and a signal generation circuit. An output end of the signal generation circuit is connected with a power output end of an electronic device. The protection circuit is composed of a differentiating circuit, a half-wave rectifying circuit and a reverse pull-up resistor which are connected in sequence. An input end of the protection circuit receives a pulse signal sent by the microprocessor and the output end is connected with an enabling switch and is used for providing an enabling signal. The enabling switch is arranged between the signal generation circuit and a power output end, so the on-off of the enabling switch can be decided according to the received enabling signal. According to the circuit and the method, the protection circuit based on the differentiating circuit is used for enhancing the security and reliability, and the software operation condition of the microprocessor is monitored according to a hardware circuit. The protection is simple and reliable and is easy to maintain. Through adjustment of parameters of circuit components, the sensitivity of the circuit can be modified according to demands.

Description

technical field The invention belongs to the electronic circuit design technology, and specifically relates to an electronic instrument control signal output circuit with a protection function and a realization method. Background technique Medical instruments are mainly used to diagnose and treat human diseases, and their objects are the human body with complex conditions, so medical instruments have their particularity compared with other instruments. The clinical application of commonly used diagnostic and therapeutic electronic instruments began at the beginning of the last century, and has developed greatly with the development of science and technology and electronic engineering. The diagnostic methods and levels of the medical field are also more dependent on medical electronic instruments. . The current medical instruments are becoming more and more intelligent, precise, and automated, with a wide variety and a wide range of applications. With the rapid development ...

AI Technical Summary

Problems solved by technology

However, at present, the operating voltage of general microprocessors is often 5V or 3.3V, or even lower.

Compared with the high-power complete machine, its voltage is relatively low, so it is very susceptible to interference

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