CN204924842U - Portable mining blow detector - Google Patents
Portable mining blow detector Download PDFInfo
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- CN204924842U CN204924842U CN201520494789.0U CN201520494789U CN204924842U CN 204924842 U CN204924842 U CN 204924842U CN 201520494789 U CN201520494789 U CN 201520494789U CN 204924842 U CN204924842 U CN 204924842U
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Abstract
The utility model discloses a portable mining blow detector, including ARM host system, gas pressure sensor and AD conversion module, atmospheric pressure sensor, SPI FLASH storage module, button input module, LCD and USB interface, wherein be equipped with the AD converter among gas pressure sensor and the AD conversion module, AD converter and ARM host system's SPI1 interface connection, the atmospheric pressure sensor AD converter that has integrateed, the atmospheric pressure sensor links to each other with ARM host system's I2C interface, SPIFLASH storage module and ARM host system's SPI2 interface connection, button input module and ARM host system are connected, LCD and ARM host system's FSMC interface connection, the USB interface is connected with ARM host system, arranges in the ARM host system. This detector uses measures drill chip gas desorption index K1 as main function, have small, the low power dissipation, man -machine interface is friendly, the operating speed is fast, convenient operation, stable performance, advantages such as measurement accuracy height.
Description
Technical field
The utility model relates to a kind of mine safety detector, is specifically related to a kind of Portable mining Gas Outburst detector.
Background technology
Nowadays the coal mining accident of more than 60% is had to be caused by Gas Outburst, therefore Gas Outburst is detected as in order to very important link, and the stability of the reliability and accuracy and lifting instrument that are only improved Gas Outburst detection just can better predict the hazard level that driving face is outstanding, could avoid as far as possible or reduce casualties and economic loss.
The instrument measuring Gas Outburst at present both at home and abroad mainly contains DMC-2, DMC-3, EL.KD-02, WTC type etc.Wherein DMC-2, DMC-3 type desorption instrument measuring principle is identical, just contour structures is different, and both all adopt the time dependent desorption pressures of U-shaped water column measurement amount boring drilling cuttings, calculates boring drilling cuttings desorption of mash gas intensity, these two kinds of desorption instrument designs are too simple and crude, and measuring accuracy is low.Although EL.KD-02 type electric capacity grid desorption of mash gas instrument applies computer processing technology, but it needs coal sample to be placed on to be equipped with in the electric capacity gate sensor measuring tube of 60 electric capacity grid equably, the vacuole measuring the methane gas generation discharged in coal arrives the time of each electric capacity grid, calculate desorption of mash gas intensity thus, the sensor test pipe of this instrument makes complicated, and measuring error is larger.WTC Gas Outburst Parameters Instrument adopts constant volume manometry to measure drilling cuttings desorption of mash gas pressure, calculate drilling cuttings desorption of mash gas amount thus, this instrument employs 8-bit microprocessor and controls as core, dominant frequency is low, adopt monochromatic LCD (resolution is 128 × 64) as display, interface is unfriendly, although have employed differential pressure pickup to carry out gasresolution pressure detection, but pressure differential resolution low (pressure differential resolution is 10Pa), along with the development of embedded technology and Digital Signal Processing, with regard to operating rate, instrument, intelligent and measuring accuracy still has huge room for improvement.
Utility model content
The utility model, for the deficiency of traditional Gas Outburst detector, provides a kind of Portable mining Gas Outburst detector, to measure K
1index (drilling cuttings desorption of mash gas index) is major function, there is volume little, low in energy consumption, human-computer interaction interface is friendly, and operating rate is fast, easy to operate, stable performance, the advantages such as measuring accuracy is high, error is little, greatly improve the accuracy that coal-mine gas gives prominence to detection, being conducive to operating personnel and grasping the outstanding hazard level of tested driving face in real time, is a kind of Modern Electronic equipment effectively predicting and prevent Gas Outburst disaster.
The technical scheme realizing the utility model object is:
A kind of Portable mining Gas Outburst detector, comprise ARM main control module, gas pressure sensor and AD conversion module, barometric pressure sensor, SPIFLASH memory module, keyboard input module, LCD and USB interface, wherein be provided with AD converter in gas pressure sensor and AD conversion module, AD converter is connected with the SPI1 interface of ARM main control module; Described barometric pressure sensor is integrated with AD converter, the I of barometric pressure sensor and ARM main control module
2c interface is connected; SPIFLASH memory module is connected with the SPI2 interface of ARM main control module; Keyboard input module is connected with ARM main control module; The FSMC interface of LCD and ARM main control module connects; USB interface is connected with ARM main control module, is placed in ARM main control module.
In described gas pressure sensor and AD conversion module, gas pressure sensor is high accuracy number gauge pressure type sensor MEAS1220A, for measuring Gas Outburst pressure, and in conjunction with 24 high precision delta-sigma type AD converter ADS1218, can very easily by measured signal gain control built in suitable scope, and utilize the sinc that its inside carries
3digital filter carries out highly-precise filtering, ensures that the signal to noise ratio (S/N ratio) of data conversion is optimum, drastically increases the precision of data conversion.Measuring error is ± 2%, and pressure differential resolution can reach 0.773Pa.
The output of described gas pressure sensor and the input of AD converter all adopt the mode of difference.
Described barometric pressure sensor is 24 the high accuracy number absolute pressure type sensor MS5611 carrying AD converter, embedded software calibration and temperature compensation function.
The pressure measurement range of described barometric pressure sensor is 10-1200mbar, and under normal temperature, resolution is 12 μ bar.
Described detector adopts the ARM core of 32.
The beneficial effects of the utility model are: energy accurate acquisition desorb gas pressure, environment temperature and on-the-spot atmospheric pressure, and it is 0-10kPa that gaseous tension can survey scope, measure relative error can reach ± 2%, there is very large practical value.Instrument also possesses the function such as power down memory function, parameter power down memory function, accurately real-time clock function, input through keyboard, usb mode data upload of power on/off function, data, there is measuring accuracy high, human-computer interaction interface is friendly, operating rate is fast, intelligent good, degree of stability is high, and function is complete, can provide multiple Predicting Gas index (K
1and Smax), the advantage such as low in energy consumption.
Accompanying drawing explanation
Fig. 1 is the utility model system chart;
Fig. 2 is gas pressure sensor and AD conversion module block diagram;
Fig. 3 is barometric pressure sensor block diagram;
Fig. 4 is USB interface and serial port module block diagram.
Embodiment
See Fig. 1, a kind of Portable mining Gas Outburst detector comprises ARM main control module, gas pressure sensor and AD conversion module, barometric pressure sensor, SPIFLASH memory module, keyboard input module, LCD and USB interface.
System principle: the coal sample be collected is placed in coal sample bottle, coal sample bottle is connected with gas pressure sensor by short sebific duct, the pressure discharged during coal sample desorption of mash gas converts electric signal to by sensor, and the gain-programmed amplifier then carried through AD converter amplifies and is converted to digital quantity.In like manner, the barometric pressure sensor being integrated with AD converter is also converted to digital quantity atmospheric pressure, and these digital quantities process through the K1 value-based algorithm proposed, and can calculate drilling cuttings gas K
1index.SPIFLASH module can be used for storing drill hole information, K
1value, bits watt figureofmerit etc., the data of storage and showing by LCD with the waveform of drafting, by USB interface, data can also be passed to host computer, host computer can be analyzed in more detail to measurement data.System power supply module provides working power for system, and crystal oscillator provides stable frequency of operation for ARM main control module.
See Fig. 2, the frequency of operation of gas pressure sensor is provided by 4MHz crystal oscillator, and the output reference voltage of A/D module is sensor power after current-limiting resistance, and+IN is positive pole ,-IN pin ground connection.The output of sensor and the input of AD converter all adopt the mode of difference, can suppress common mode interference and reach low noise susceptibility, improve measuring accuracy.Make a concrete analysis of as follows, sensor converts electric signal to Gas Outburst pressure, Full-span output is 70mV, the programmable gain amplifier (PGA) utilizing A/D module to carry, can very easily by measured signal gain control built in suitable scope, thus simplify the interface circuit with external sensor.In order to the inside 2.5V reference voltage of adaptive AD converter, arranging gain is here 32, and full scale signal is amplified to 2.24V.Select the sinc that AD converter carries
3digital filter carries out highly-precise filtering, improves the precision of data conversion.
Aly have 24 high-precision digital absolute pressure type barometric pressure sensor see Fig. 3, MS5611, the calibration of this sensor embedded software and temperature compensation function.Pressure measurement range is 10-1200mbar, and under normal temperature (25 DEG C), resolution is 12 μ bar.Power consumption only 5 μ A under its idle pulley, when data are changed, power consumption is 1mA, belongs to super low-power consumption sensor, adopts I
2c communication protocol, this instrument uses this sensor to carry out on-the-spot atmospheric pressure measurement and scene temperature is measured.
See Fig. 4, in detector, MCUDM, MCUDP of micro-control unit are connected with USBDM, USBDP pin of ARM respectively, just can realize USB function after having write USB interface program, carry out the data transmission between detector and PC.Add serial port module in addition, can conveniently debug.
Claims (6)
1. a Portable mining Gas Outburst detector, it is characterized in that: comprise ARM main control module, gas pressure sensor and AD conversion module, barometric pressure sensor, SPIFLASH memory module, keyboard input module, LCD and USB interface, wherein be provided with AD converter in gas pressure sensor and AD conversion module, AD converter is connected with the SPI1 interface of ARM main control module; Described barometric pressure sensor is integrated with AD converter, the I of barometric pressure sensor and ARM main control module
2c interface is connected; SPIFLASH memory module is connected with the SPI2 interface of ARM main control module, and keyboard input module is connected with ARM main control module; The FSMC interface of LCD and ARM main control module connects; USB interface is connected with ARM main control module, is placed in ARM main control module.
2. Portable mining Gas Outburst detector as claimed in claim 1, it is characterized in that: the gas pressure sensor in described gas pressure sensor and AD conversion module is digital watch die mould sensor MEAS1220A, and in conjunction with 24 delta-sigma type AD converter ADS1218, measured signal gain is set to 32, full scale signal is 2.24V, and utilizes the sinc that AD converter inside carries
3digital filter carries out filtering.
3. Portable mining Gas Outburst detector as claimed in claim 2, is characterized in that: the output of described gas pressure sensor and the input of AD converter all adopt the mode of difference.
4. Portable mining Gas Outburst detector as claimed in claim 1, is characterized in that: described barometric pressure sensor is the 24 bit digital absolute pressure type sensor MS5611 carrying AD converter.
5. Portable mining Gas Outburst detector as claimed in claim 4, it is characterized in that: the pressure measurement range of described barometric pressure sensor is 10-1200mbar, under normal temperature, resolution is 12 μ bar.
6. Portable mining Gas Outburst detector as claimed in claim 1, is characterized in that: described detector adopts the ARM core of 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520494789.0U CN204924842U (en) | 2015-07-09 | 2015-07-09 | Portable mining blow detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520494789.0U CN204924842U (en) | 2015-07-09 | 2015-07-09 | Portable mining blow detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204924842U true CN204924842U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520494789.0U Expired - Fee Related CN204924842U (en) | 2015-07-09 | 2015-07-09 | Portable mining blow detector |
Country Status (1)
| Country | Link |
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| CN (1) | CN204924842U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092426A (en) * | 2016-06-02 | 2016-11-09 | 桂林电子科技大学 | A kind of high precision gas highlights measuring cell |
| CN107389231A (en) * | 2017-07-31 | 2017-11-24 | 桂林电子科技大学 | A kind of high-accuracy portable coal mine gas outburst prediction instrument |
| CN107885120A (en) * | 2017-11-10 | 2018-04-06 | 桂林电子科技大学 | A kind of quantitative control system based on Kalman filter |
| CN110412074A (en) * | 2019-07-31 | 2019-11-05 | 辽宁工程技术大学 | A kind of multifunctional coal oxidation characteristic experimental provision and its application method |
-
2015
- 2015-07-09 CN CN201520494789.0U patent/CN204924842U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092426A (en) * | 2016-06-02 | 2016-11-09 | 桂林电子科技大学 | A kind of high precision gas highlights measuring cell |
| CN107389231A (en) * | 2017-07-31 | 2017-11-24 | 桂林电子科技大学 | A kind of high-accuracy portable coal mine gas outburst prediction instrument |
| CN107885120A (en) * | 2017-11-10 | 2018-04-06 | 桂林电子科技大学 | A kind of quantitative control system based on Kalman filter |
| CN110412074A (en) * | 2019-07-31 | 2019-11-05 | 辽宁工程技术大学 | A kind of multifunctional coal oxidation characteristic experimental provision and its application method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20180709 |
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| CF01 | Termination of patent right due to non-payment of annual fee |