Gas leakage alarm controller with intelligent alarm threshold value and control method thereof

A technology of gas leakage and intelligent alarm, applied in alarms, instruments, etc., can solve the problems of atmospheric pollution, troublesome use, and differences in the consistency of parameters, and achieve the effects of high production efficiency, saving procedures, and low cost

Inactive Publication Date: 2013-01-16
宁波宇宏电气有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] This intelligent gas leakage alarm controller with one-time memory for the calibration alarm concentration and its control method not only improves production efficiency, but also reduces environmental pollution, although in the production process of this intelligent gas leakage alarm controller, It only needs to be debugged once for each intelligent gas leakage alarm control device, but it still needs to be debugged with combustible gas, and there is still room for improvement in production efficiency, and although there is only a small amount of emissions, it will

Method used

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  • Gas leakage alarm controller with intelligent alarm threshold value and control method thereof
  • Gas leakage alarm controller with intelligent alarm threshold value and control method thereof
  • Gas leakage alarm controller with intelligent alarm threshold value and control method thereof

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Embodiment Construction

[0031]Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] figure 1 Shown is the structural representation of the present invention.

[0033] The reference signs are: resistance / voltage conversion circuit 1, capacitor 1-1, resistor 1-2, comparator 1-3, negative input terminal 1-3a, positive input terminal 1-3b, comparison output terminal 1- 3c. Microprocessor 2, executive control mechanism 3, command input device 4, gas sensor 5, main detector 5-1, and auxiliary detector 5-2.

[0034] figure 2 , image 3 It is a structural schematic diagram of the prior art, and the reference signs therein are: high-concentration combustible gas 1', pressure regulator 2', micro gas injection machine 3', transparent test box (sealed container) 4', infrared gas concentration detection Instrument 5', detected gas leakage alarm 6', sealing screwdriver 7', gas mixing fan 8', gas delivery pipe 9', sampling gas pip...

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Abstract

The invention discloses a gas leakage alarm controller with an intelligent alarm threshold values. The gas leakage alarm controller comprises at least one gas sensor, a microprocessor and an executing control mechanism controlled by the microprocessor, wherein each gas sensor is connected with the microprocessor via a resistance/voltage converting circuit, the microprocessor prestores a characteristic curve and the combustible gas alarm concentration value of the gas sensor and utilizes clean air as datum, compares voltage signals received from the resistance/voltage converting circuit with voltage value of the prestored characteristic curve and determines and stores the alarm threshold values corresponding to the gas sensors. The gas leakage alarm controller with the intelligent alarm threshold value has the advantages of no need to test the combustible gas alarm concentration, higher production efficiency, no pollution and convenience in use.

Description

technical field [0001] The invention relates to the field of gas leakage alarm devices, in particular to an intelligent gas leakage alarm controller, specifically, an intelligent gas leakage alarm controller with an alarm threshold that can automatically calibrate the alarm concentration value. Background technique [0002] At present, known gas leakage alarm controllers generally adopt an analog circuit structure, which increases with the increase of the concentration of combustible gas in the air according to the conductivity of the sensor. The change in conductivity is converted into an output signal corresponding to the concentration of combustible gas, and the gas sensor will change the characteristics of the resistance value when it is exposed to combustible gas of different concentrations. [0003] attached figure 2 Connect the gas sensor and a variable resistor to the two input terminals of the comparator respectively, and then send out a level alarm signal by compa...

Claims

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Application Information

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IPC IPC(8): G08B21/16
Inventor 邱柏康柏子江
Owner 宁波宇宏电气有限公司
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