CN202916223U - Methane sensor for mine - Google Patents
Methane sensor for mine Download PDFInfo
- Publication number
- CN202916223U CN202916223U CN 201220411920 CN201220411920U CN202916223U CN 202916223 U CN202916223 U CN 202916223U CN 201220411920 CN201220411920 CN 201220411920 CN 201220411920 U CN201220411920 U CN 201220411920U CN 202916223 U CN202916223 U CN 202916223U
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- sensing element
- housing
- circuit
- methane sensor
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Abstract
The utility model discloses a methane sensor for mine and relates to the field of mine equipment. The methane sensor comprises a housing (3) and a sensing element (11) and a circuit board (9), which are arranged inside the housing (3). The sensing element (11) comprises a methane concentration sensing element and a temperature sensing element; a microprocessor is arranged on the circuit board (9); an A/D conversion circuit, a digital potentiometer, a display circuit, an audile and visual alarm circuit, a 200-1000 Hz signal output circuit and a bus communication circuit are connected at the periphery of the microprocessor; a gas inlet window (5), a display window (4), an alarm sound box (8) and a flash cover (6) are arranged on the housing (3); and the circuit board (9) is connected with the sensing element (11), the display window (4), the alarm sound box (8) and the flash cover (6). The methane sensor has the characteristics of high operating precision and good stability and reliably, achieves the effect of detecting both temperature and methane concentration at the same detection point, adopts two output modes and is more convenient.
Description
Technical field
The utility model relates to the mining equipment field, a kind of mining methane sensor specifically, be mainly used in monitoring, the warning of methane concentration in the coal mine safety monitoring system, be applicable to without in the environment of trickle, Qinshui, steam and without strong corrosion gas, contain under the mine of gas or coal dust.
Background technology
Though China is coal big country, per capita resource is relatively poor, and is along with the development of national economy, increasing to the demand of coal.And security incident was continuous in recent years, had caused loss for national product and people's property.Methane sensor for coal mine is the methane concentration monitoring equipment that designs for gas burst accident specially, can the Real-Time Monitoring methane concentration, and carry out data and show, upload and report to the police, ensure scope of operation personal security.The shortcomings such as that traditional mining methane sensor exists is single on detected parameters and the Output system, transmission range short, irremovable are demanded urgently improving.
Summary of the invention
For solving the technical matters of above-mentioned existence, the utility model provides a kind of mining methane sensor, has increased detected parameters and Output system, detects accurately conveniently moving.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of mining methane sensor, include housing, the inside of described housing is provided with sensing element, circuit board, described sensing element includes sensing methane concentration element and temperature-sensing element, be provided with microprocessor on the described circuit board, be connected with the A/D change-over circuit in the periphery of described microprocessor, digital regulation resistance, display circuit, sound light alarming circuit, 200-1000Hz frequency signal output circuit and bus communication circuit, be provided with air intake window on the described housing, display window, warning audio amplifier and flash of light cover, described circuit board connects sensing element, display window, warning audio amplifier and flash of light cover.
The outer setting of described sensing element has protective cover.
Described sensing element is arranged at the bottom of housing, and described air intake window is arranged at position corresponding with sensing element on the housing.
Also include movable Intake Cover, described movable Intake Cover is arranged at the bottom of housing, and described air intake window is arranged on the movable Intake Cover.
Described warning audio amplifier protrudes from the outside of housing, and the flash of light cover that is used for flashing light alarm is arranged at the both sides of air intake window.
The side of described housing is provided with Waterproof connector of cable.
The top of described housing is provided with the suspension handle.
Described bus communication interface adopts the RS485 communication bus.
The utility model adopts high-precision a/d converter and digital regulation resistance, microprocessor to carry out the A/D conversion of methane concentration, has operating accuracy height, reliable and stable characteristics; Increased the detection to same measuring point environment temperature on the basis of traditional methane transducer, thereby the analysis environments situation of being more convenient for; The output of 200-1000Hz frequency signal or two kinds of standards of RS485 bus output are adopted in signal output, and more convenient user is according to the on-site actual situations choice for use; The sound and light alarm that transfinites improves sound and light index, is beneficial to the user and in time discovers and take the necessary measures; Also adopted the waterproof sealing design on the structure, the design of air intake window and movable Intake Cover had both guaranteed the circulation of gas and the convenience of pick up calibration, had reached again the purpose of waterproof.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the left view of Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in detail:
Such as Fig. 1, Fig. 2 with Figure 3 shows that a specific embodiment of the present utility model, include housing 3, the inside of described housing 3 is provided with sensing element 11, circuit board 9.
Described sensing element 11 includes sensing methane concentration element and temperature-sensing element, and outer setting has protective cover 10.For simplicity, sensing element 11 is arranged at the bottom of housing 3.
Be provided with air intake window 5 on the described housing 3, described air intake window 5 can be arranged at the bottom of housing 3, and is corresponding with the position at sensing element 11 places.Be provided with display window 4, warning audio amplifier 8 and flash of light cover 6 on the described housing 3, described warning audio amplifier 8 protrudes from the outside of housing 3, and the flash of light cover 6 that is used for flashing light alarm is arranged at the both sides of air intake window 5.
Be provided with microprocessor on the circuit board 9, be connected with A/D change-over circuit, digital regulation resistance, display circuit, sound light alarming circuit, 200-1000Hz frequency signal output circuit and bus communication circuit in the periphery of described microprocessor.Described sensing element 11 is connected with A/D change-over circuit, digital regulation resistance etc.; Described display window 4 is connected with display circuit, described warning audio amplifier 8 is connected with sound light alarming circuit respectively with the cover 6 that is connected, realize that the methane concentration information that arrives and temperature information that sensing element 11 detects show at display window 4, by the output of 200-1000Hz frequency signal or two kinds of standard outputs of RS485 bus output; Transfinite and carry out sound and light alarm by warning audio amplifier 8 and flash of light cover 6.
As more perfect design, can also movable Intake Cover 7 be set at housing 3, described movable Intake Cover 7 is arranged at the bottom of housing 3, and described air intake window 5 is arranged on the movable Intake Cover 7, has guaranteed the circulation of gas and the convenience of pick up calibration.
The side of described housing 3 is provided with Waterproof connector of cable 2, has reached the purpose of waterproof.
The top of described housing 3 is provided with and hangs handle 1, is convenient to lift and hang, and is easy to use, flexibly mobile.
When the utility model uses under coal mine, gas in the environment enters the air chamber at sensing methane concentration element place in the sensing element 11 by air intake window 5 and movable Intake Cover 7, temperature is by the temperature-sensing element perception that is posted on the housing 1, carry out A/D conversion and signal amplification through high-precision A/D change-over circuit and data potentiometer, pass to microprocessor and carry out data sampling and processing, the frequency signal that the methane concentration signal is converted to 200 ~ 1000Hz is exported, or temperature, methane concentration information are exported through the RS485 signal and communication.When gas density was higher than setting value, microprocessor drove sound light alarming circuit through driving circuit, and the pilot lamp of the hummer of warning audio amplifier 8 and flash of light cover 6 inside starts respectively and carries out sound and light alarm.Output signal is through the cable output of Waterproof connector of cable 2 accesses, and alerting signal is sent warning sound level intensity is not less than 80dB (A) in the sound pressure level apart from its 1m aural signal at a distance caution sound by warning audio amplifier 8 behind drive amplification.Light signal can be high-visible at a distance at 20m through the 6 three-dimensional cautions of flash of light cover.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement also should belong to protection domain of the present utility model.
Claims (8)
1. mining methane sensor, include housing (3), it is characterized in that, the inside of described housing (3) is provided with sensing element (11), circuit board (9), described sensing element (11) includes sensing methane concentration element and temperature-sensing element, described circuit board is provided with microprocessor on (9), be connected with the A/D change-over circuit in the periphery of described microprocessor, digital regulation resistance, display circuit, sound light alarming circuit, 200-1000Hz frequency signal output circuit and bus communication circuit, be provided with air intake window (5) on the described housing (3), display window (4), warning audio amplifier (8) and flash of light cover (6), described circuit board (9) connects sensing element (11), display window (4), warning audio amplifier (8) and flash of light cover (6).
2. a kind of mining methane sensor according to claim 1 is characterized in that, the outer setting of described sensing element (11) has protective cover (10).
3. a kind of mining methane sensor according to claim 1 and 2 is characterized in that, described sensing element (11) is arranged at the bottom of housing (3), and described air intake window (5) is arranged at the upper position corresponding with sensing element (11) of housing (3).
4. a kind of mining methane sensor according to claim 1 is characterized in that, also includes movable Intake Cover (7), and described movable Intake Cover (7) is arranged at the bottom of housing (3), and described air intake window (5) is arranged on the movable Intake Cover (7).
5. a kind of mining methane sensor according to claim 1 is characterized in that, described warning audio amplifier (8) protrudes from the outside of housing (3), and the flash of light cover (6) that is used for flashing light alarm is arranged at the both sides of air intake window (5).
6. a kind of mining methane sensor according to claim 1 is characterized in that, the side of described housing (3) is provided with Waterproof connector of cable (2).
7. a kind of mining methane sensor according to claim 1 is characterized in that, the top of described housing (3) is provided with and hangs handle (1).
8. a kind of mining methane sensor according to claim 1 is characterized in that, described bus communication circuit adopts the RS485 communication bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220411920 CN202916223U (en) | 2012-08-20 | 2012-08-20 | Methane sensor for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220411920 CN202916223U (en) | 2012-08-20 | 2012-08-20 | Methane sensor for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202916223U true CN202916223U (en) | 2013-05-01 |
Family
ID=48164527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220411920 Expired - Fee Related CN202916223U (en) | 2012-08-20 | 2012-08-20 | Methane sensor for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202916223U (en) |
-
2012
- 2012-08-20 CN CN 201220411920 patent/CN202916223U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20130820 |