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A gas monitoring system

A gas monitoring and gas technology, applied in the direction of material resistance, can solve the problems of poor sensitivity, low use efficiency, large sensor array volume, etc., to achieve the effect of reducing costs, saving resources, and simple and fast logical relationship

Active Publication Date: 2018-06-19
苏州慧闻纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is how to overcome the defects of existing sensor arrays such as large volume, selectivity, low efficiency, high cost, poor sensitivity, and inability to integrate with small devices.

Method used

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Embodiment 1

[0028] Such as figure 1 and figure 2 As shown, the embodiment of the present invention provides a kind of gas monitoring system, is used for identifying and real-time monitoring target gas or smell, comprises sensor array, multiplexer and microprocessor, and described sensor array is made up of four pairs Different gases produce different sensor arrays, each group of sensors in the four groups of sensors includes four sensors, and the four sensors are the same, that is, they can detect the same gas or odor. The user selects the corresponding sensor to identify or monitor the target gas or odor according to the control signal sent by the microprocessor.

[0029] In addition, the system also includes a resistance measurement module for measuring the resistance value of the sensor array, one end of the resistance measurement module is connected to the analog-to-digital conversion unit, and the other end is connected to the sensor array, and the microprocessor performs range mea...

Embodiment 2

[0041] Such as figure 1 and figure 2 As shown, the embodiment of the present invention provides a gas monitoring system for identifying and real-time monitoring target gases or odors, including a sensor array, a multiplexer and a microprocessor, and the sensor array is composed of eight pairs Different gases produce different sensor arrays, and the multiplexer selects the corresponding sensor to identify or monitor the target gas or odor according to the control signal sent by the microprocessor.

[0042] In addition, the system also includes a resistance measurement module for measuring the resistance value of the sensor array, one end of the resistance measurement module is connected to the analog-to-digital conversion unit, and the other end is connected to the sensor array, and the microprocessor performs range measurement on the resistance measurement module. control, the signal output end of each sensor in the sensor array is electrically connected to an input end of t...

Embodiment 3

[0054] Such as figure 1 and figure 2 As shown, the embodiment of the present invention provides a kind of gas monitoring system, is used for identifying and real-time monitoring to target gas or smell, comprises sensor array, multiplexer and microprocessor, and described sensor array is composed of sixteen The multiplexer selects the corresponding sensor to identify or monitor the target gas or smell according to the control signal sent by the microprocessor.

[0055] In addition, the system also includes a resistance measurement module for measuring the resistance value of the sensor array, one end of the resistance measurement module is connected to the analog-to-digital conversion unit, and the other end is connected to the sensor array, and the microprocessor performs range measurement on the resistance measurement module. control, the signal output end of each sensor in the sensor array is electrically connected to an input end of the multiplexer, and the microprocessor...

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Abstract

The invention discloses a gas monitoring system; the gas monitoring system is used for identifying and monitoring target gas or smell in real time; the gas monitoring system comprises a sensor array, a multiplexer and a microprocessor; the sensor array is composed of m sensors capable of generating different responses to different gas in an arranging manner; and the multiplexer is used for selecting a corresponding sensor to identify or monitor target gas or smell according to a control signal sent by the microprocessor. The sensor array in the invention shares a sensor measurement circuit through the multiplexer, so that resources are saved; the multiplexer selectively outputs a corresponding sensor detection signal according to the control signal sent by the microprocessor; a logical relationship is simple and rapid; the multiple kinds of gas can be detected simultaneously; and the miniaturization of the system is realized.

Description

technical field [0001] The invention relates to the field of gas monitoring, in particular to a gas monitoring system. Background technique [0002] People's daily life and production activities are closely related to the surrounding atmospheric environment, and changes in the atmosphere have a great impact on human beings. With the gradual expansion of industrial scale, the types of products continue to increase, and the types and quantities of gases produced in gas raw materials and production processes continue to increase, especially the development of industries such as petroleum, chemical industry, coal and automobiles, resulting in increasingly serious air pollution. Therefore, it is very necessary to accurately monitor various gases in the human living and production environment. [0003] At present, the existing gas monitoring devices can only realize the one-to-one monitoring of sensors and gases, and the monitoring of multiple gases or odors in the environment is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/04
Inventor 孙旭辉鲁一江张书敏
Owner 苏州慧闻纳米科技有限公司