CN203732483U

CN203732483U - Wireless detection system for harmful gas in mine environment

Info

Publication number: CN203732483U
Application number: CN201420010771.4U
Authority: CN
Inventors: 徐通
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-08
Filing date: 2014-01-08
Publication date: 2014-07-23
Anticipated expiration: 2024-01-08

Abstract

The utility model discloses a wireless detection system for a harmful gas in a mine environment. The system comprises a plurality of detection units and a detection center computer, wherein the detection units detect characteristic parameters of the harmful gas of a check point; each detection unit achieves information exchange with the detection center computer through a wireless communication module. By adopting the wireless detection system, the problems that the detected mine environment is large in area in practical production, distribution state of the harmful gas is complicated, and the traditional independent detection of one or more points cannot represent the actual condition and variation trend of the harmful gas in the mine environment caused by low accuracy and poor instantaneity of the existing detection technology for the harmful gas of a coal mine are effectively solved.

Description

A kind of Minepit environment harmful gas wireless detecting system

Technical field

The utility model relates to Intelligent Measurement and the opertaing device technical field of Minepit environment, is specifically related to a kind of Minepit environment harmful gas wireless detecting system.

Background technology

At present; ensure coal mine production safety; prevent coal mining accident; the personal safety of protection Coal Mine Staff; promote the development of mining industry; guarantee that the enough fresh airs of personnel in the pit must water down harmful gas and dust below safe concentration, they comprise the gases such as CO, H2S, CO2, CH4, therefore must measure the distribution situation of harmful gas.

Above-mentioned gas derive from many-side, as CO under coal mine, mainly result from that the spontaneous fire of coal and mine timber rot and the blasting fume of blowing out in, can be used as and judge whether coal seam the index of spontaneous fire occurs in colliery underground monitoring CO concentration change trend; Acute CO poisoning is to cause taking central nervous system damage as main systemic disease after sucking high concentration CO.Gently, moderate intoxication main manifestations be headache, giddy, palpitaition, feel sick, vomiting, limbs fatigue, clouding of consciousness, even stupor.Carbon dioxide (CO2) is mainly present in coal seam and coal cinder, in coal mining process, discharge together with gas, mine timber rots, personnel breathe, coal spontaneous ignition and explosion etc. also can produce carbon dioxide (CO2), because carbon dioxide (CO2) density is large, generally accumulate in the abandoned working of tunnel lower and improper ventilation more, in indivedual coal seams or rock stratum, there will be great amount of carbon dioxide (CO2) Abnormal Methane Emission phenomenon, be called carbon dioxide (CO2) outstanding, as once there is the outstanding accident of carbon dioxide (CO2) in mining area, Yingcheng coal mine He Yao street, carbon dioxide (CO2) is mainly in respiratory tract sucks human body, when high density, there is remarkable toxic action, it is mainly the toxic action to respiratory center.In mine, sulphuric dioxide is mainly derived from oxidation and nature and the underground blasting of containing sulfur minerals (as pyrite etc.); Sulphuric dioxide (SO2) is mainly to be sucked and produced intoxication by respiratory tract, is secondly that the contact of skin, mucous membrane absorbs; Sulfuretted hydrogen is the hypertoxic gas with rotten egg smell, and inflammable and explosive, and explosion ratio scope is 4.3%-46%.When organism is corrupt, can produce sulfuretted hydrogen, therefore often have sulfuretted hydrogen to gather in excrement kiln, Bilge, closed conduit, sulfuretted hydrogen belongs to asphyxia caused by chemicals gas, when acute poisoning, can cause pulmonary edema and toxic encephalopathy; Ammonia is the irritative gas of colourless foul smelling smell, very easily water-soluble and form ammonium hydroxide (ammoniacal liquor), also easily from aqueous solution, overflow.

In some mine rock of China, have natural ammonia to gush out, as ten thousand of Tiefa Mining area and Fengfeng Mining Area years ore deposits etc., low concentration ammonia has spread effect to eye and upper respiratory tract mucosa, and the NH3 that sucks high concentration can cause bronchitis and toxic pneumonitis, pulmonary edema; Oxides of nitrogen in mine air mainly results from the blasting fume with nitrolite explosion, oxides of nitrogen is irritative gas, is insoluble in water, thereby can reach bronchiole and the alveolar in respiratory tract deep, lung tissue is produced to strong impulse and corrosive attack, can cause bronchitis and pulmonary edema etc.; When in coal seam, tomography or other crack, gap gathered a large amount of methane, under high pressure state, while possessing certain condition, methane ejection or protrusion phenomenon can occur, and is called gas ejection and Gas Outburst.Develop coal-mine gas dynamic acquisition and the supervisory system based on Web at China Chen Kui, networking and level of digital that coal-mine gas gathers are improved, Li Bing etc. have developed the mine gas detection system based on WSN, Yang Li etc. have developed the Portable gas detection alarm instrument based on STC12LE5608AD, it is low that these method of testings have reliability, the features such as the low and real-time of accuracy is poor, they can not accurately measure the concentration of colliery harmful gas, the particularly complicated component of colliery harmful gas, their forming process complexity, therefore adopting single measuring method is effectively to measure the concentration of harmful gas.

Summary of the invention

The purpose of this utility model is to provide a kind of Minepit environment harmful gas wireless detecting system, it is low poor with real-time that the utility model efficiently solves existing colliery harmful gas detection technique accuracy, thereby cause in actual production detected Minepit environment Area comparison large, the distribution situation more complicated of harmful gas, one or several points of traditional independent detection can not represent the actual state of Minepit environment harmful gas and the problem of variation tendency.

The utility model is achieved through the following technical solutions:

A kind of Minepit environment harmful gas wireless detecting system, it is characterized in that: described device is made up of multiple detecting units and inspection center's computing machine, detecting unit is realized the characteristic parameter of check point harmful gas is detected, and each detecting unit is by wireless communication module and inspection center's computer realization information interaction, described detecting unit is by gas circuit and parameter acquisition the electric circuit constitute, and gas circuit and parameter acquisition circuit are by mine gas air intake opening, pure air air intake opening, air inlet electromagnetic valve, exhausr port, exhaust solenoid valve, sensor array, Temperature Humidity Sensor, filtering circuit, signal conditioning circuit and MSP430 single-chip microcomputer form, mine gas air intake opening, pure air air intake opening enters mine by the screen pack arranging on admission line, and air inlet electromagnetic valve is set on admission line, and mine is connected with exhausr port by gas exhaust duct, and exhaust solenoid valve, sensor array are set on gas exhaust duct, Temperature Humidity Sensor is installed in detected mine, sensor array, Temperature Humidity Sensor by the characteristic parameter of the harmful gas collecting through filtering circuit, signal conditioning circuit sends to MSP430 single-chip microcomputer to carry out data processing, and sends data after treatment to inspection center computing machine by wireless communication module, and power module is sensor array, Temperature Humidity Sensor, filtering circuit, signal conditioning circuit and MSP430 single-chip microcomputer provide working power, and each detecting unit is realized with inspection center's computerized information mutual by wireless communication module.

The further Technological improvement plan of the utility model is:

Described sensor array comprises methane transducer TGS816, ammonia gas sensor TGS826, hydrogen sulfide sensor TGS825, carbon dioxide sensor TGS4160, carbon monoxide transducer TGS203.

The utility model further Technological improvement plan is:

Described wireless communication module adopts the wireless communication module that model is nRF2401;

Described single-chip microcomputer adopts the single-chip microcomputer that model is MSP430;

Described detecting unit is uniformly distributed in mine.

The utility model is with the advantage compared with traditional detection method:

1, real-time is high: the utility model has adopted based on wireless sensor technology, had the sensor array of high susceptibility can identify the distribution situation of multiple check point harmful gases of Minepit environment to harmful gas, and system can provide foundation to the high-efficient purification strategy of Minepit environment harmful gas.The air intake opening of detecting unit is directly arranged in the check point of detected Minepit environment exemplary position, can carry out data acquisition and pattern-recognition simultaneously, reflects in real time the distribution situation of the synchronization harmful gas of single or several even whole detected Minepit environments.

2, accuracy is high: the utility model has adopted high susceptibility sensor array technology to gather the canonical parameter of the multiple harmful gas situation of reflection Minepit environment, overcome the low problem of measurement accuracy of the pure gas sensor of classic method, therefore it improves accuracy and the real-time of System Discrimination.

The utility model has very high using value in the detection of Minepit environment information automation and robotization control, and application prospect is boundless.

Brief description of the drawings

Fig. 1 system chart of the present utility model.

Embodiment

The utility model is made up of multiple detecting units and inspection center's computing machine, and detecting unit is realized the characteristic parameter of check point harmful gas is detected, and each detecting unit is by wireless communication module and inspection center's computer realization information interaction, described detecting unit is by gas circuit and parameter acquisition the electric circuit constitute, and gas circuit and parameter acquisition circuit are by mine gas air intake opening, pure air air intake opening, air inlet electromagnetic valve, exhausr port, exhaust solenoid valve, sensor array, Temperature Humidity Sensor, filtering circuit, signal conditioning circuit and MSP430 single-chip microcomputer form, mine gas air intake opening, pure air air intake opening enters mine by the screen pack arranging on admission line, and air inlet electromagnetic valve is set on admission line, and mine is connected with exhausr port by gas exhaust duct, and exhaust solenoid valve, sensor array are set on gas exhaust duct, Temperature Humidity Sensor is installed in detected mine, sensor array, Temperature Humidity Sensor by the characteristic parameter of the harmful gas collecting through filtering circuit, signal conditioning circuit sends to MSP430 single-chip microcomputer to carry out data processing, and sends data after treatment to inspection center computing machine by wireless communication module, and power module is sensor array, Temperature Humidity Sensor, filtering circuit, signal conditioning circuit and MSP430 single-chip microcomputer provide working power, and each detecting unit is realized with inspection center's computerized information mutual by wireless communication module, and sensor array comprises methane transducer TGS816, ammonia gas sensor TGS826, hydrogen sulfide sensor TGS825, carbon dioxide sensor TGS4160, carbon monoxide transducer TGS203, wireless communication module adopts the wireless communication module that model is nRF2401, and single-chip microcomputer adopts the single-chip microcomputer that model is MSP430, and detecting unit is uniformly distributed in mine.

Sketch the course of work of the present utility model in conjunction with Fig. 1:

According to the sensor array that harmful gas is had to susceptibility, and the problem of the weak output signal of Temperature Humidity Sensor output characteristics and output, device adopts filtering circuit, signal conditioning circuit, given the A/D interface of MSP430 single-chip microcomputer through over-sampling circuit by the output of conditioning amplifying circuit, and the data of harmful gas to timing acquiring in single-chip microcomputer carry out filtering processing, then send through wireless communication module the data of handling well to inspection center computing machine, inspection center's computing machine is according to the characteristic parameter situation of harmful gas, can regulate by opening air inlet electromagnetic valve or exhaust solenoid valve the grade situation of harmful gas concentration.

The utility model does not relate to partly all prior aries that maybe can adopt same as the prior art to be realized.

Claims

1. a Minepit environment harmful gas wireless detecting system, it is characterized in that: described system is made up of multiple detecting units and inspection center's computing machine, detecting unit is realized the characteristic parameter of check point harmful gas is detected, and each detecting unit is by wireless communication module and inspection center's computer realization information interaction, described detecting unit is by gas circuit and parameter acquisition the electric circuit constitute, and gas circuit and parameter acquisition circuit are by mine gas air intake opening, pure air air intake opening, air inlet electromagnetic valve, exhausr port, exhaust solenoid valve, sensor array, Temperature Humidity Sensor, filtering circuit, signal conditioning circuit and MSP430 single-chip microcomputer form, mine gas air intake opening, pure air air intake opening enters mine by the screen pack arranging on admission line, and air inlet electromagnetic valve is set on admission line, and mine is connected with exhausr port by gas exhaust duct, and exhaust solenoid valve, sensor array are set on gas exhaust duct, Temperature Humidity Sensor is installed in detected mine, sensor array, Temperature Humidity Sensor by the characteristic parameter of the harmful gas collecting through filtering circuit, signal conditioning circuit sends to MSP430 single-chip microcomputer to carry out data processing, and sends data after treatment to inspection center computing machine by wireless communication module, and power module is sensor array, Temperature Humidity Sensor, filtering circuit, signal conditioning circuit and MSP430 single-chip microcomputer provide working power, and each detecting unit is realized with inspection center's computerized information mutual by wireless communication module.

2. a kind of Minepit environment harmful gas detection system based on wireless senser according to claim 1, is characterized in that: described sensor array comprises methane transducer TGS816, ammonia gas sensor TGS826, hydrogen sulfide sensor TGS825, carbon dioxide sensor TGS4160, carbon monoxide transducer TGS203.

3. a kind of Minepit environment harmful gas detection system based on wireless senser according to claim 1 and 2, is characterized in that: described wireless communication module adopts the wireless communication module that model is nRF2401.

4. a kind of Minepit environment harmful gas detection system based on wireless senser according to claim 1 and 2, is characterized in that: described single-chip microcomputer adopts the single-chip microcomputer that model is MSP430.

5. a kind of Minepit environment harmful gas detection system based on wireless senser according to claim 1 and 2, is characterized in that: described detecting unit is uniformly distributed in mine.