CN202330344U

CN202330344U - Methane and carbon dioxide measurer

Info

Publication number: CN202330344U
Application number: CN2011204551452U
Authority: CN
Inventors: 翟培; 吕春江; 陈光易
Original assignee: HUAINAN SONGJIANG ELECTRONICS Co Ltd
Current assignee: HUAINAN SONGJIANG ELECTRONICS Co Ltd
Priority date: 2011-11-16
Filing date: 2011-11-16
Publication date: 2012-07-11
Anticipated expiration: 2021-11-16

Abstract

The utility model discloses a methane and carbon dioxide measurer and relates to the technical field of gas measurement devices. The methane and carbon dioxide measurer comprises a singlechip control module, as well as a buzzer alarm module, a digital tube display module, a key setting module and a battery charging module which are respectively connected with the singlechip control module, wherein the battery charging module supplies power for all the modules. The methane and carbon dioxide measurer is characterized by also comprising a carbon dioxide gas measurement module, a methane gas measurement module and a voltage stabilizing circuit module which are connected to the singlechip control module. The intelligent multifunctional subminiature digital measurer designed by adopting a high-performance microcontroller and a novel electronic element integrates the advantages of small volume, light weight, complete functions, simplicity, easiness in, and the like into a whole.

Description

The methane and carbon dioxide analyzer

Technical field

The utility model relates to eudiometry device technique field, is specifically related to a kind of methane and carbon dioxide analyzer.

Background technology

The mechanical type methane pick-up unit of colliery use at present is the interference of light methane detection technique of introducing from Japan the beginning of the fifties.What it adopted is mechanical light channel structure, cheap for manufacturing cost; But volume is bigger and heavy, and is not portable; Barrier propterty is poor; Gas sampling can not be gathered automatically; Temperature, precision are drifted about.

Chinese patent CN2783317 discloses a kind of portable intelligent interference of light methane analyzer, and it comprises shell, light path system and projection imaging system in the enclosure and that be communicated with inlet channel are set.This analyzer is compared with mechanical interference of light methane analyzer; Compact conformation, it can convert the amount of movement of interference of light striped into electric signal, converts the detection data again into and is directly shown by charactron; Its detection speed is fast, degree of accuracy is high, can will detect data with computer interface and in time store; But it can not be sampled to gas automatically, and precision is drifted about with temperature variation, makes measured value inaccurate.

In sum, the problem that the interference of light methane analyzer of prior art exists is that volume is big, can not sample to gas automatically, and function singleness, measured value is inaccurate.

The utility model content

The utility model technical matters to be solved is to provide a kind of intellectuality, multi-functional, the accurate methane and carbon dioxide analyzer of measurement.

The utility model technical matters to be solved adopts following technical scheme to realize,

A kind of methane and carbon dioxide analyzer; The buzzer warning module that comprise single chip control module, is connected respectively with single chip control module, charactron display module, button are provided with module and are the battery charging module of each module for power supply, it is characterized in that: also comprise the carbon dioxide measurement module, methane gas measurement module and the mu balanced circuit module that are connected on the single chip control module.

The output terminal of described carbon dioxide measurement module and methane gas measurement module is connected with the input end of single chip control module respectively.

On described carbon dioxide measurement module, be provided with carbon dioxide sensor.

The beneficial effect of the utility model is: the utility model adopts intellectuality, multi-functional, the digital analyzer device of microminiature of high-performance microcontroller and new electronic component design; Collective is long-pending little; In light weight, complete function such as is simple and easy to use at advantage; This product mainly is applicable to the mensuration and the warning of methane, density of carbon dioxide gas in the coal mine operation environment, can supply down-hole cadre, managerial personnel, gas detection person getting working face staff etc. to carry use.

Description of drawings

Fig. 1 is the utility model functional-block diagram;

Fig. 2 is the utility model single chip control module circuit theory diagrams;

Fig. 3 is the utility model charactron display module circuit theory diagrams;

Fig. 4 is the utility model methane gas measurement module circuit theory diagrams;

Fig. 5 is the utility model buzzer warning modular circuit schematic diagram;

Fig. 6 is the utility model battery charger schematic diagram;

Fig. 7 is the utility model button control module circuit theory diagrams;

Fig. 8 is the utility model mu balanced circuit modular circuit schematic diagram;

Fig. 9 is the utility model carbon dioxide measurement module circuit theory diagrams.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.

As shown in Figure 1; A kind of methane and carbon dioxide analyzer; The buzzer warning module that comprise single chip control module, is connected respectively with single chip control module, charactron display module, button are provided with module and are the battery charging module of each module for power supply, also comprise the carbon dioxide measurement module, methane gas measurement module and the mu balanced circuit module that are connected on the single chip control module, and the output terminal of carbon dioxide measurement module and methane gas measurement module is connected with the input end of single chip control module respectively; As shown in Figure 9; On the carbon dioxide measurement module, be provided with carbon dioxide sensor, the function of carbon dioxide sensor is to adopt the concentration of the carbon dioxide in the infrared ray principle of work testing environment, when gas concentration is higher than the maximum concentration of setting; Transmission signals is reported to the police analyzer.

Extremely shown in Figure 9 like Fig. 2; The utility model adopts thermocatalysis type high-performance sensors to form Wheatstone bridge; Gage beam by carrier catalyst element (being commonly called as black element) and pure year element (being commonly called as white element) form; Sub-arm is made up of metalfilmresistor and potentiometer, and mu balanced circuit is that electric bridge provides stable voltage.Bridge circuit is in equilibrium state in fresh air, and in tested gas, methane produces catalytic reaction (flameless burning) at black element surface; Black component temperature is raise; Resistance increases, the bridge circuit out of trim, thus export a potential difference (PD); This potential difference (PD) within the specific limits, its size be directly proportional with methane concentration.

The potential difference signal that sensor produces is delivered to the interior A/D converter of microcontroller and is converted digital signal into through after changing, and handles the back by microcontroller and on the instrument display screen, shows respective concentration.The A/D converter that while cell voltage sample circuit is delivered to the voltage signal of obtaining in the microcontroller converts digital signal into, is handled by microcontroller, and shows cell voltage in real time.The analyzer clock, the personnel that are convenient for carrying observe.The microcontroller of analyzer constantly monitoring battery voltage whether under-voltage (≤3.2V) whether exceed standard with gas concentration.If cell voltage is under-voltage or gas concentration surpasses the setting maximum range; Microcontroller drives warning circuit immediately; Send sound, light warning; Microprocessor controls on-off circuit shutdown after 3 seconds is avoided high concentration methane or other high concentration gas percussions with protection unlikely overdischarge of battery and sensor.

More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims

1. methane and carbon dioxide analyzer; The buzzer warning module that comprise single chip control module, is connected respectively with single chip control module, charactron display module, button are provided with module and are the battery charging module of each module for power supply, it is characterized in that: also comprise the carbon dioxide measurement module, methane gas measurement module and the mu balanced circuit module that are connected on the single chip control module.

2. methane and carbon dioxide analyzer according to claim 1 is characterized in that: the output terminal of described carbon dioxide measurement module and methane gas measurement module is connected with the input end of single chip control module respectively.

3. methane and carbon dioxide analyzer according to claim 1 is characterized in that: on described carbon dioxide measurement module, be provided with carbon dioxide sensor.