Double-sensor pressure monitoring system for respirator

Abstract

The invention belongs to the technical field of automatic control and discloses a double-sensor pressure monitoring system for a respirator. The double-sensor pressure monitoring system comprises a three-way air valve, a first pressure sensor, a second pressure sensor, a first A / D (analog to digital) converter, a second A / D converter, a first microprogrammed control unit (MCU), a second MCU, a liquid crystal display module and a pressure head-up display device. One end of the three-way air valve is used for being connected with a respirator gas cylinder, and the other two ends of the three-way air valve is connected with the first pressure sensor and the second pressure sensor. The first pressure sensor is sequentially connected with the first A / D converter, the first MCU and the liquid crystal display module. The second pressure sensor is sequentially connected with the second A / D converter, the second MCU and the pressure head-up display device. Two completely independent sensors and processing branches thereof are adopted, and the safe reliability is high on the premise that properties such as the precision, shock resistance and fatigue durability are ensured.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and relates to a pressure monitoring system, in particular to a dual-sensor pressure monitoring system for a respirator. Background technique [0002] Respirators are usually used by firefighters or emergency rescue personnel to safely and effectively carry out fire extinguishing, emergency rescue and rescue work in various environments such as dense smoke, poisonous gas, steam or hypoxia. When performing special tasks, firefighters or emergency rescue personnel need to know the gas volume of their own respirator cylinders in real time, and if the electronic pressure gauge of the respirator fails, it will seriously affect their emotions and sense of security, thus directly affecting the completion and completion of tasks The quality of the respirator electronic pressure gauge, so the safety and reliability of the respirator electronic pressure gauge is very important. [0003] At prese...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of poor reliability of the pressure monitoring system in the prior art, the present invention provides a dual-sensor pressure monitoring system for respirators, which adopts a completely independent dual-pressure sensor structure and digital display mode

The use of two completely independent pressure sensors not only overcomes the problem of low safety and reliability of a single sensor, but also solves the problems of low precision, large visual error, poor shock resistance and reliability, and damage rate caused by the use of pointer pressure gauges. Problems of high and poor fatigue resistance

Images