Two-wire toxic gas detector with digital display function

A toxic gas and detector technology, applied in the field of gas detection, can solve problems such as inconvenient operation, unfavorable production debugging and accurate calibration, and inability to display in real time, so as to achieve the effect of convenient production and use

Inactive Publication Date: 2016-06-29
JINAN BENAN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional two-wire toxic gas detectors often cannot achieve low power consumption, real-time display, and inconvenient operation, which is not conducive to production debugging and accurate calibration, and is not conducive to the modularization of toxic gas sensing circuits

Method used

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  • Two-wire toxic gas detector with digital display function
  • Two-wire toxic gas detector with digital display function

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0018] Such as figure 1 The present invention shown is composed of toxic gas sensing circuit 1, AD acquisition and processing circuit 2, main chip control circuit 3, display circuit 4, infrared button circuit 5, 4-20mA output control circuit 6, and power supply circuit 7.

[0019] Such as figure 2 The power supply circuit 7 shown flows through the display circuit 4 from top to bottom, and returns to the ground through the main chip control circuit and AD acquisition circuit 2. The working current of the circuit does not exceed 4mA.

[0020] A two-wire toxic gas detector with digital display function, characterized in that it includes toxic gas sensing circuit 1, AD acquisition and processing circuit 2, main chip control circuit 3, display circuit 4, infrared button circuit 5...

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PUM

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Abstract

The invention belongs to the technical field of gas detection, in particular to a two-wire toxic gas detector with digital display function, comprising a toxic gas sensing circuit, an AD acquisition and processing circuit, a main chip control circuit, a display circuit, an infrared button circuit, 4- 20mA output control circuit and power circuit; the toxic gas sensing circuit detects gas concentration and converts it into a voltage signal and sends it to the AD acquisition and processing circuit for amplification processing. After the main chip control circuit accesses the AD acquisition and processing circuit, the main chip control circuit controls the The display circuit performs display, judgment, and alarm processing, the main chip control circuit controls the zeroing and calibration calibration through the infrared button circuit, and the main chip control circuit controls the accurate output of the 4-20mA output circuit through the PWM output; the present invention can realize two-line toxic gas detection , 4‑20mA is convenient for data uploading; realize digital display, infrared remote control, intelligent and modular toxic gas detection.

Description

technical field [0001] The invention belongs to the technical field of gas detection, in particular to a two-line toxic gas detector with a digital display function. Background technique [0002] Carbon monoxide, hydrogen sulfide, ammonia, chlorine and other toxic gases are produced in many production and living environments, which seriously threaten human life and property safety. Toxic gas detectors can detect certain toxic gases in the environment in time and display them in real time. Gas concentration can be monitored in time by uploading an alarm to ensure safety. Traditional two-wire toxic gas detectors often cannot achieve low power consumption, real-time display, and inconvenient operation, which is not conducive to production debugging and accurate calibration, and is not conducive to the modularization of toxic gas sensing circuits. The invention adopts low power consumption, current loop, and infrared remote control button to realize a two-wire 4-20mA toxic gas ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26
CPCG01N27/26
Inventor 齐云江楚秀昌赵春燕
Owner JINAN BENAN TECH DEV CO LTD
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