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Harmful gas monitoring system based on amplifying and filtering circuit

A technology of amplifying and filtering harmful gases, applied in measurement devices, material analysis by optical means, instruments, etc., can solve the problems of poor stability, short service life, vibration sensitivity, etc., to reduce system errors, reduce external interference, The effect of improving measurement accuracy and speed

Inactive Publication Date: 2016-04-20
WUXI TUONENG AUTOMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the domestic infrared absorption spectrum gas concentration detection technology is still in the initial development stage. Most measuring instruments still use nickel-chromium wire as the infrared light source, and use mechanical modulation of infrared light, which has poor stability, short service life, and sensitivity to vibration. defect

Method used

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  • Harmful gas monitoring system based on amplifying and filtering circuit
  • Harmful gas monitoring system based on amplifying and filtering circuit

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0029] Such as figure 1 As shown, a harmful gas monitoring system based on an amplification filter circuit includes an infrared absorption detection module, an amplification filter circuit, a detection and rectification circuit, a microcontroller module, a clock module, a keyboard input module, an alarm module, a display module, a memory module and The power supply module, the infrared absorption detection module is connected with the micro-controller module through the amplification filter circuit, the detection and rectification circuit in turn, and the clock module, keyboard input module, alarm module, display module, memory module and power supply module are all connected to the micro-controller On the corresponding port of the detector module, the infrared absorption detection module includes a spectrum modulation drive circuit, an infrared li...

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Abstract

The invention discloses a harmful gas monitoring system based on an amplifying and filtering circuit. The harmful gas monitoring system has a simple structure and is easy to realize. The system adopts a novel pyroelectric infrared detector to realize simultaneous detection of a plurality of harmful gas concentrations, and through light source modulation and signal conditioning circuit's optimized design, external interference is effectively lowered, and the system error is reduced. The powerful operation processing capacity of DSP enhances the measurement accuracy and speed of the system, and CAN bus communication is convenient for remote monitoring. The system can realize real-time monitoring of the concentrations of a plurality of harmful gases.

Description

technical field [0001] The invention relates to a harmful gas monitoring system, in particular to a harmful gas monitoring system based on an amplification filter circuit, which belongs to the field of harmful gas monitoring and control. Background technique [0002] With the acceleration of urbanization and industrialization, the impact of various harmful gases on industrial and agricultural production, natural environment and daily life is becoming more and more serious, which has aroused widespread concern of the whole society. Excessive concentrations of harmful gases in the local environment and industrial sites will seriously endanger people's health. Therefore, it is of great significance to monitor the concentration of harmful gases in certain specific areas. Compared with traditional gas concentration measurement methods, infrared absorption spectroscopy has many advantages such as high measurement accuracy, fast response speed, good stability, strong anti-interfer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504
CPCG01N21/3504
Inventor 罗龙史才坤李刚
Owner WUXI TUONENG AUTOMATION TECH
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