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A bus-type combustible gas concentration detection device and control method thereof

A gas concentration detection, line-type technology, applied in the direction of measuring devices, material analysis through electromagnetic means, instruments, etc., can solve the problems of heavy wiring workload, increased material consumption, cumbersome debugging work, etc., and achieve long service life , Convenience for centralized monitoring and query effect

Inactive Publication Date: 2011-12-21
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to overcome the disadvantages in the prior art that the installation and wiring workload is large, the material consumption increases sharply with the increase of detection points, and the debugging work is very cumbersome when using detectors in the prior art, the purpose of the present invention is to provide an accurate, safe and A bus-type combustible gas concentration detection device capable of realizing networked detection and its control method

Method used

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  • A bus-type combustible gas concentration detection device and control method thereof
  • A bus-type combustible gas concentration detection device and control method thereof
  • A bus-type combustible gas concentration detection device and control method thereof

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Embodiment Construction

[0043] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0044] Such as figure 1 , figure 2 Shown, the present invention is made up of the following parts:

[0045] The gas concentration detection part includes: the detection probe U17, which is connected to the constant current source formed by the power module U12 and the second resistor R02. This embodiment adopts the catalytic combustion detection probe U17 and the high-precision A / D converter U3, and the output signal is connected to The control part is used to detect the concentration of combustible gas, and its resistance value changes linearly with the gas concentration; the first resistor R01 is connected between the second resistor R02 and the power supply end of the detection probe U17, and the two ends of the first resistor R01 are connected to the Two input ends of A / D converter U3 (the present embodiment is the 3rd, 4th input pins A...

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Abstract

The invention relates to a bus-type combustible gas concentration detection device and its control method. The device includes: a gas concentration detection part connected to the detection input end of the control part; a control part including a microprocessor, which receives the gas concentration detection part The detection signal is output to the display part and the alarm part, and the control program is stored in the microprocessor; the display part is connected to the display output end of the control part; the operation part is connected to the operation input end of the control part; the alarm output part has sound The alarm device is connected to the alarm output terminal of the microprocessor through a photocoupler; the bus interface part has a bus communication module, which sends the information of the microprocessor in the control part to the bus; the method includes initializing the device, detecting Combustible gas concentration, serial communication with the upper central controller at any time. The invention realizes the networked detection of the combustible gas concentration, has high measurement precision, high explosion-proof performance and large amount of displayed information.

Description

technical field [0001] The invention relates to a gas concentration detection device, in particular to a bus-type combustible gas concentration detection device and a control method thereof which realize the functions of combustible gas concentration detection and alarm display. Background technique [0002] In industrial production and daily life, various combustible gases are often used. In order to ensure the safety of life and property, it is usually necessary to monitor the concentration of combustible gases in occasions involving the use of combustible gases. In some important areas, real-time detection of the concentration of combustible gases is required to monitor that it does not exceed the critical value, so as to ensure the safety of daily production and life. [0003] Currently commonly used combustible gas detectors are mainly divided into hand-held detectors, single-point detectors, and multi-point detectors. Handheld detectors are mainly used for daily safet...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N35/00G01N27/00G08B21/16
Inventor 史勃朱军张环宇吴景辉
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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