CJY4/30 type methane oxygen measuring device

Abstract

The invention discloses a CJY4 / 30 type methane oxygen measuring device including a shell body; the shell body is internally provided with a circuit main board, a battery, a methane Wyeth electrical bridge, an oxygen wyeth electrical bridge, an A / D converter, a single-chip microcomputer, a digital tube, alarms and a wireless module; the alarms include an acoustic alarm, a light alarm and a vibration alarm. The measuring device has the advantages of stable performance, accurate door limit, rapid response, and high precision; a use method adopts a humanized design and a soft adjusting technology, and is simple to operate and easy to use; an outer shell of the measuring device adopts an ABS high-strength all-plastic structure, a touch-tone electronic thin film switch having high sealing performance is matched, a four-bit highlighted red digital tube is adopted for displaying, a sound, light and vibration combined type alarming mode is adopted, the alarming effect is more obvious and better, and the measuring device is novel in structure, unique in modeling, small in size, light in weight and easy to carry; and at the same time, a wireless transmitting-receiving module is equipped, and patrol data are uploaded.

Description

technical field [0001] The invention relates to a gas detector, in particular to a CJY4 / 30 type methane oxygen detector. Background technique [0002] Gas is an accompaniment to coal mining, and gas explosion is one of the major disasters in coal mines. It poses a serious threat to safe production in coal mines, and it is also the focus of research and prevention in coal mining countries around the world. Most of the methane detectors used in coal mines are portable at present. The circuit of the known portable methane detectors is composed of sensing elements, amplifier circuits, A / D conversion circuits, single-chip microcomputers, signal output circuits, sound and light alarm circuits, and display circuits; The methane concentration is continuously monitored. Its disadvantages are poor sensitivity and stability, short working hours, and it is not suitable for mining in underground mines. At the same time, the detection range of dangerous gases is relatively small, which r...

AI Technical Summary

Problems solved by technology

Its disadvantages are poor sensitivity and stability, short working hours, and it is not suitable for mining in mines. At the same time, the detection range of dangerous gases is relatively small, which reduces the safety performance to a certain extent.

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