CN202948014U - ARM-based portable gas detector - Google Patents
ARM-based portable gas detector Download PDFInfo
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- CN202948014U CN202948014U CN 201220616636 CN201220616636U CN202948014U CN 202948014 U CN202948014 U CN 202948014U CN 201220616636 CN201220616636 CN 201220616636 CN 201220616636 U CN201220616636 U CN 201220616636U CN 202948014 U CN202948014 U CN 202948014U
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Abstract
The utility model discloses an ARM-based portable gas detector. The gas detector comprises a gas sensor and an ARM processor, wherein the gas sensor is placed in the to-be-detected gas, the obtained signal is transmitted to the ARM processor through a signal conditioning module and an analog-to-digital conversion module, the ARM processor transmits the signal to a computer, and the computer stores and analyzes the signal. For the ARM processor-based mine gas portable detector device, based on the real-time processing capability of the ARM processor, the problem of how to detect the concentration of the mine gas conveniently in the first time is solved well, safe production and hidden trouble prevention are realized, and massive personnel and property losses is avoided.
Description
Technical field
The utility model relates to a kind of gas monitor, is specifically related to a kind ofly based on the portable gas detector of ARM, relates in particular to the methane gas monitoring instrument in a kind of Safety of Coal Mine Production.
Background technology
Production operation under coal mine is because away from ground, and subsurface environment is complicated abominable, the explosion accident of as easy as rolling off a log generation methane gas.Traditional gas detecting device has that high power consumption, volume are large, the deficiency of the very flexible used and the aspect such as expensive.Usually the discovery methane gas Accident Symptom that the staff of safety detection can not be promptly and accurately can not accomplish that safety in production prevents trouble before it happens, and often causes huge personnel and property loss.
The utility model content
The purpose of this utility model is to overcome the above problem that prior art exists, and provides a kind of based on the portable gas detector of ARM, how to preferably resolve the primary scene very first time detect easily the coal mine gas gas concentration problem.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions:
A kind of based on the portable gas detector of ARM, comprise firedamp sensor and arm processor, described firedamp sensor is put into tested gas, the signal that draws transfers to described arm processor through signal condition module, analog-to-digital conversion module, and described arm processor is sent to be stored in computing machine and analyzes.
Preferably, described arm processor also is connected with alarm module.
Preferably, described arm processor also is connected with input/output module, and described input/output module comprises keyboard and display.
Preferably, described arm processor is connected with level switch module by far infrared transceiver and described compunication between described far infrared transceiver and described computing machine.
The beneficial effects of the utility model are:
Based on the coal mine gas portable inspectiont instrument apparatus of arm processor, utilize the processing capability in real time of arm processor, preferably resolve the problem that how detects easily the coal mine gas gas concentration in the primary scene very first time.Accomplish that safety in production prevents trouble before it happens, and has avoided huge personnel and property loss.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of instructions, below with preferred embodiment of the present utility model and coordinate accompanying drawing to be described in detail as follows.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 gas detector entire system structural representation;
Fig. 2 firedamp sensor connecting circuit schematic diagram.
Number in the figure explanation: 1, arm processor, 2, firedamp sensor, 3, the signal condition module, 4, analog-to-digital conversion module, 5, computing machine, 6, alarm module, 7, input/output module, 8, far infrared transceiver, 9, level switch module.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
With reference to shown in Figure 1, a kind of based on the portable gas detector of ARM, comprise firedamp sensor 2 and arm processor 1, described firedamp sensor 2 is put into tested gas, the signal that draws transfers to described arm processor 1 through signal condition module 3, analog-to-digital conversion module 4, described arm processor 1 is sent in computing machine 5 to be stored and analyzes, described arm processor 1 is communicated by letter with described computing machine 5 by far infrared transceiver 8, is connected with level switch module 9 between described far infrared transceiver 8 and described computing machine 5.
Preferably, described arm processor 1 also is connected with alarm module 6, input/output module 7, and described input/output module 7 comprises keyboard and display.
The STM32F103CBT6 microcontroller that described arm processor 1 selection model is Cortex-M3 is as the control core parts.Under the condition of identical performance, the power consumption of STM32F103CBT6 microcontroller is than low 75% left and right of product of same level, and processing speed has high code density, high real-time and low-power consumption than fast 30% left and right of the product of peer.Its clock frequency can reach 72MHz, and Flash that capacity reaches 128KB and the RAM storage of 20KB are provided, and is embedded in the A/D converter of 12.
Described firedamp sensor 2 is the TP-1.1A combustible gas sensor.Utilize firedamp sensor 2 to come collection site gas check point signal, be output as electric signal.TP-1.1A is a kind of methane gas detecting sensor of non-hot type, and its advantage is that the life-span is long, power consumption is lower, reaches serviceable life more than 5 years; It has very strong adaptive capacity to environment, has the height sensitivity characteristics.It adopts the structure of microbead type, and the work of its two pins line is with reference to shown in Figure 2.Voltage on sensor is V1, and V0 is the output voltage on its pull-up resistor R1, and sensor signal obtains in the variation by the voltage on pull-up resistor R1, and R2 represents the TP-1.1A sensor.TP-1.1A gas detects invocation point: when gas density was on the low side, V0 was basic linear growth, and when the concentration that detects increased, it is slow that the rate of growth of V0 becomes.
Described input/output module 7 comprises keyboard and display.Keyboard is 16 of matrix form buttons, and purpose is be used to the ultimate value that methane gas concentration safety is set, and the data that can input are: testing staff's order of classes or grades at school, time and watt inspection person's numbering, realized testing staff's identity record function.Display is the LCD liquid crystal display, has facilitated the testing staff can check at any time the methane gas concentration value.Having adopted model is the number percent that the liquid crystal display of EDM1190A is used for showing methane gas concentration, and it is comprised of LCD liquid crystal display, 8 bit CPU interface circuits and driving circuit.
Alarm module 6 roles have two: the one, and when reporting to the police when methane gas concentration surpasses the safety value that sets in advance, under the prompting coal mine, the staff withdraws rapidly the scene; The 2nd, will report to the police in the time of the cell voltage shortcoming that adopts when portable instrumentation, personnel are in time to its charging for the testing of prompting methane gas.
Far infrared transceiver 8, it is comprised of radiating portion and receiving unit.When tested gas measured and be converted into digital quantity after, can form serial data through the serial code circuit code, then modulate and power amplification through the conditioning driving circuit, then drive infrared launcher and send and detect data; When infrared receiving unit receives the infrared signal that the former sends, at first convert the infrared signal of accepting to electric signal, then send into pre-amplification circuit it is amplified, then the solution mediation decoding of process decoding decoding scheme is sent to and stores in computing machine and analyze.
Operating system that the present embodiment is transplanted selects Software for Design to select μ C/OS-II operating system, as development platform and the basis of the embodiment program of native system.μ C/OS-II be an open source, can cutting, the multitask real-time kernel of the formula of trying to be the first, it has and takes up room littlely, carries out efficient high, portable strong characteristics.During to the arm processor 1 graft procedure μ C/OS-II of system and application program, the present embodiment is selected the ADS1.2 compiler.The present embodiment transplant to need is transplanted OS_CPU_C.C file, OS_CPU.H file and OS_CPU_A.ASM file, and define system default task pattern is user model, its objective is when reducing task program and make mistakes the adverse effect to code.
The present embodiment principle of work is as follows:
The present embodiment gas collection point at first at the scene gathers watt gas on-site by firedamp sensor 2, after collecting measured signal, convert it to electric signal, through signal condition module 3 circuit, it being done the analog-to-digital conversion module 4 of making a gift to someone after further processing is converted into the needed number signal and sends into arm processor 1, arm processor 1 carries out computing by program to the data of inputting will obtain gas density to be measured, and be presented on the display of input/output module 7, offer on-the-spot worker and check at any time coal mine gas information.In addition, can also measured data be sent to computing machine 3 by level switch module 9 by far infrared transceiver 8 stores and analyzes, computing machine 3 can also carry out rapid communication by bus RS485 with the main control computer that rest on the ground again, data are carried out further detailed analysis, draw out the measured data messages such as gas density curve.Simultaneously, alarm module 6 effect is, when tested gas density surpasses certain harm standard degree, or when the situation of battery undervoltage occurs, can realize by the break-make situation of controlling triode the audible alarm of whole gas monitor.
The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. one kind based on the portable gas detector of ARM, it is characterized in that: comprise firedamp sensor (2) and arm processor (1), described firedamp sensor (2) is put into tested gas, the signal that draws transfers to described arm processor (1) through signal condition module (3), analog-to-digital conversion module (4), and described arm processor (1) is sent in computing machine (5) and stores and analyze.
2. the Portable Gas Detector based on ARM according to claim 1, it is characterized in that: described arm processor (1) also is connected with alarm module (6).
3. the Portable Gas Detector based on ARM according to claim 1, it is characterized in that: described arm processor (1) also is connected with input/output module (7), and described input/output module (7) comprises keyboard and display.
4. the Portable Gas Detector based on ARM according to claim 1, it is characterized in that: described arm processor (1) is communicated by letter with described computing machine (5) by far infrared transceiver (8), is connected with level switch module (9) between described far infrared transceiver (8) and described computing machine (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220616636 CN202948014U (en) | 2012-11-21 | 2012-11-21 | ARM-based portable gas detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220616636 CN202948014U (en) | 2012-11-21 | 2012-11-21 | ARM-based portable gas detector |
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| Publication Number | Publication Date |
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| CN202948014U true CN202948014U (en) | 2013-05-22 |
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| CN 201220616636 Expired - Fee Related CN202948014U (en) | 2012-11-21 | 2012-11-21 | ARM-based portable gas detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806785A (en) * | 2016-03-28 | 2016-07-27 | 贵州大学 | Portable laser methane detecting device and detecting method thereof |
| 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 |
-
2012
- 2012-11-21 CN CN 201220616636 patent/CN202948014U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806785A (en) * | 2016-03-28 | 2016-07-27 | 贵州大学 | Portable laser methane detecting device and detecting method thereof |
| 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 |
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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: 20130522 Termination date: 20131121 |