Portable gas detection alarm device

An alarm device and portable technology, applied in mining equipment, fuel oil testing, material inspection products, etc., can solve the problems of small working current, high price, and not yet popularized and used, and achieve the effect of preventing safety accidents

Inactive Publication Date: 2012-05-09
李城龙
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gas sensors developed abroad using nanotechnology have low operating current, long life, and can detect a variety o

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Portable gas detection alarm device
  • Portable gas detection alarm device
  • Portable gas detection alarm device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The invention is mainly composed of functional modules such as microprocessor A Tme-gal 128L, sensor acquisition circuit, signal amplification circuit, intermittent control, etc. The device compares the gas concentration value collected by the gas sensor with the preset alarm value, and when the detection value reaches At the preset alarm point, the buzzer will be activated and the alarm light will flash to take timely measures to prevent the occurrence of malignant accidents of gas explosion.

[0011] The low-precision measurement mode with intermittent power supply of the gas sensor is adopted. The intermittent time is controlled by the single-chip microcomputer. The DC voltage output signal proportional to the gas concentration generated by the detection bridge is subsequently amplified and sent to the A / D conversion port of the microprocessor to detect the concentration value. Non-linear compensation to achieve accurate detection of the true value of the current gas con...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a portable gas detection alarm device, and relates to a novel portable gas detection alarm device controlled by a singlechip. The portable gas detection alarm device disclosed by the invention is capable of collecting and displaying the current gas concentration value of an area in which the alarm device is located, making a corresponding alarm decision and effectively preventing safety accidents caused by gas combustion or explosion. The portable gas detection alarm device disclosed by the invention comprises the following functional modules: a microprocessor A Tme-gal 128 L, a sensor acquisition circuit, a signal amplification circuit, an intermittent control module and the like. The low-precision measurement mode of the intermittent power supply of a gas sensor is adopted, and the intermittent time is controlled by the singlechip; a direct voltage output signal which is in direct proportion to gas concentration and is generated by a detection bridge is sent to the analog/digital (A/D) conversion port of a microprocessor after being subsequently amplified to perform nonlinear compensation on a detected concentration value so as to accurately detect the true value of the current gas concentration.

Description

Technical field: [0001] The portable gas detection and alarm device relates to a new type of portable gas detection and alarm device controlled by a single-chip microcomputer. Background technique: [0002] Gas explosion is a huge hidden danger in the development of the mining industry. As one of the largest coal producing and consuming countries in the world, the safety of the mining industry has always been the focus of social concern. The safety of miners affects the hearts of thousands of households, and reports of mining accidents occur from time to time. According to statistics, the gas concentration explodes when the gas concentration is 4% to 16%, burns when it is lower than 4%, and neither burns nor explodes when it is greater than 16%; therefore, the accurate detection of gas concentration becomes an effective way to prevent the gas concentration from exceeding the limit. The gas explosion caused a key problem in the mining disaster. In order to ensure the life safety...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N33/22E21F17/18
Inventor 李城龙
Owner 李城龙
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap