Digital signal processor (DSP)-based intelligent gas sensor checking instrument for mines

A gas sensor and calibrator technology, which is applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of low work efficiency, low calibration accuracy, and high labor intensity, and achieve fast calibration speed, clear system structure, The effect of high degree of automation

Inactive Publication Date: 2011-03-23
山西科致成科技有限公司 +1
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Problems solved by technology

[0007] The present invention provides a DSP-based intelligent calibrator for mine gas sensors, which realizes automatic calibration of multi-concentration and multi-channel mine gas sensors at the same time, so as to solve the problem of single structure of existing calibrator and remote calibrator. There are problems of high labor intensity and low work efficiency during calibration, especially the problem of low calibration accuracy

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  • Digital signal processor (DSP)-based intelligent gas sensor checking instrument for mines
  • Digital signal processor (DSP)-based intelligent gas sensor checking instrument for mines
  • Digital signal processor (DSP)-based intelligent gas sensor checking instrument for mines

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Embodiment Construction

[0028] The specific implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can realize it after reading the specific implementation manner.

[0029] Such as figure 1 As mentioned above, a DSP-based intelligent calibrator for mining gas sensors of the present invention includes a microcontroller unit, a signal conditioning unit, a communication interface unit, a keyboard display unit, a touch control unit and a gas circuit system. in:

[0030] Described microcontroller unit, namely the minimum system of DSP includes CPU, off-chip RAM, power supply, crystal oscillator circuit, JTAG interface circuit, LCD indicator lamp and necessary jumper.

[0031] The communication interface unit includes an RS-232 drive circuit.

[0032] The signal conditioning unit includes a conditioning circuit for frequency signals and a conditioning circuit for analog signals.

[0033] The...

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Abstract

The invention provides a digital signal processor (DSP)-based intelligent gas sensor checking instrument for mines, comprising a microcontroller unit, a signal conditioning unit, a communication interface unit, a keyboard display unit, a touch control unit and a gas circuit system; and in the invention, the communication connection is carried out on the units and modules of the checking instrument. In the invention, the existing checking instrument structure is improved, and the central processing unit (CPU) technology, the electronic technology and the control technology are taken as main technologies, thereby solving the problems of low speed, low accuracy and high labor intensity of the existing checking instrument and providing services for underground safety production of coal mines.

Description

technical field [0001] The invention relates to a gas sensor calibrator, in particular to an automatic calibrator for mine gas sensors with multiple concentrations and multiple channels. Background technique [0002] Mine gas sensors refer to gas sensors, carbon monoxide sensors, negative pressure sensors and wind speed sensors. In the coal mine safety monitoring system, the detection sensor is directly related to the reliability and sensitivity of the coal mine safety monitoring system, and plays a decisive role in monitoring and monitoring. In order to ensure the accuracy of mine gas sensor measurement, regular calibration is required. Article 162 of the Coal Mine Safety Regulations stipulates that "methane detection equipment such as methane sensors and portable methane detection and alarm devices that use carrier catalytic components must be calibrated with calibration gas samples and air samples every 7 days. The over-limit power-off function is tested". [0003] Exi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/00
Inventor 田慕琴张文矿刘西青孟磊邓生明李乃忠袁振平
Owner 山西科致成科技有限公司
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