CN103411883A - Methane detection warning instrument - Google Patents
Methane detection warning instrument Download PDFInfo
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- CN103411883A CN103411883A CN201310373269XA CN201310373269A CN103411883A CN 103411883 A CN103411883 A CN 103411883A CN 201310373269X A CN201310373269X A CN 201310373269XA CN 201310373269 A CN201310373269 A CN 201310373269A CN 103411883 A CN103411883 A CN 103411883A
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Abstract
The invention relates to a methane detection warning instrument. The methane detection warning instrument comprises a control unit circuit (1), a power conversion circuit (2), a methane infrared probe (3), a signal acquisition circuit (4), a remote-control receiving circuit (5) and a warning circuit (7), wherein the control unit circuit comprises a microprocessor which utilizes a three-level production line of a Hovrard structure; the signal acquisition circuit comprises a circuit for sampling and filtering analog signals of the methane infrared probe; the signal acquisition circuit and the control unit circuit are in communication connection through an IIC (Inter-Integrated Circuit) bus, and the remote-control receiving circuit and the control unit circuit are in communication connection. According to the methane detection warning instrument, as the wireless remote controller is separated from a host of the warning instrument, not only is the security of the warning instrument improved, but also the dustproof and waterproof effects of the host of the warning instrument are improved, and the service life of the host of the warning instrument is prolonged.
Description
Technical field
The present invention relates to a kind of gas detecting and alarming instrument, be specifically related to a kind of Portable Methane Detection Alarm that has distant control function for colliery.
Background technology
Methane detection alarming instrument is a kind of equipment that detects methane concentration, is mainly used for mine and can produces the place of methane with other.This inflammable and explosive gas of methane is to certainly lead in all process of coal mining, inevitable, in case methane concentration exceeds standard very easily accidents caused, the workman who works in mine is produced to very large hazard to person, due to methane, be a kind of gas of colorless and odorless, so can only just can detect by sensitive reliable detecting instrument.
But, there are two problems in domestic existing Portable Methane Detection Alarm, the one, Portable Methane Detection Alarm rights of using problem, because any user of service who has alarm now can return to zero to it, calibrate, revise the important operations such as alarm set point, cause thus the potential safety hazards such as the methane detected value is made mistakes, false alarm; The 2nd, Portable Methane Detection Alarm is dustproof, waterproof and serviceable life problem, because physical button or film key realization are all passed through in parameter adjustment and the operation of existing alarm, physical button or film key all exist that mechanical life and self are dustproof, the waterproof construction problem, in case alarm inner inlet or advance dirt and too much will cause alarm fault or damage.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of methane detection alarming instrument, and this methane detection alarming instrument can effectively improve security, and improves dustproof, the waterproof effect of alarm main frame.
In order to address the above problem, the present invention realizes in the following manner:
A kind of methane detection alarming instrument, comprise
The control module circuit, comprise microprocessor;
Power converting circuit, after the accurate voltage-stabilizing device voltage stabilizing of secondary conversion, be each element circuit power supply;
The methane probe, adopt NDIR (Non-Dispersive Infrared) detection technique methane infrared probe;
Signal acquisition circuit, comprise sampling and the circuit of filtering to the simulating signal of described methane infrared probe;
Warning circuit, comprise the driving circuit of light emitting diode, active buzzer and light emitting diode and active buzzer;
It is characterized in that: also comprise remote-control receiving circuit, described remote-control receiving circuit comprises infrared receiving circuit and BL9149 decoding chip, described signal acquisition circuit is connected by IIC IC bus (Inter-Integrated Circuit) communication with the control module circuit, described control module circuit is connected with the warning circuit communication, and described remote-control receiving circuit is connected with the communication of control module circuit.
Described infrared receiving circuit comprises infrared receiving terminal, filter capacitor, resistor and triode, the base stage of described triode is connected with described receiving end the first port, its collector is connected with resistor RB2 respectively at described decoding chip RxIN port, its grounded emitter; The positive pole of described filter capacitor CB9 be connected to stabilized voltage supply, its minus earth after resistor RB3 is connected; Described receiving end the second port is connected with described decoding chip GND port and grounded emitter point ground connection, its 3rd port is connected between the positive pole and current-limiting resistor RB3 of filter capacitor CB9; Described decoding chip vdd terminal mouth be connected between described resistor RB3 and stabilized voltage supply after the other end of described resistor RB2 is connected, its OCS port be connected to the common ground line after block condenser CB2 is connected, its C2 port be connected to the common ground line after block condenser CB4 is connected, its C3 port directly connects the common ground line, resistor RB1 mono-end connects the common ground line, and the other end is connected between decoding chip OCS port and capacitor CB2.
Further, also comprise display circuit, described display circuit comprises 4 LED charactrons and 4 drive IC for the driving LED charactron, and it is luminous that described microprocessor will need the coding shown to be sent to drive IC driving LED charactron by the IO mouth serially, be used to realizing showing methane concentration.
Described drive IC can adopt 74HC164, described 74HCT164 is 8 edging trigger formula shift registers, microprocessor is sent to 74HCT164 by the numerical coding that the IO mouth will need to show serially, 74HCT164 parallel output coding drives charactron, it is 20mA to the maximum to the drive current of every segment numeral pipe, larger drive current makes the charactron display brightness higher, and this is conducive to the observation of dark surrounds under coal mine.
More satisfactory is that described microprocessor is for adopting the STM32F103 of 32 ARM cortex-m3 kernels, have abundant peripheral hardware and stronger antijamming capability, be applicable to very much Industry Control, another these series processors bus structure adopt the Harvard structure three class pipeline, processing speed is 1.25DMIPS/MHz, can effectively promote data-handling capacity and the response time of complete machine.
What the A/D converter that described signal acquisition circuit adopts was more satisfactory is that its resolution is 16, can guarantee precision and the good reproducibility of sampled data.Further, to be equipped with an independent precision be the reference voltage source of 0.1% employing LM4041 to described A/D converter.
Compared with prior art, the invention has the beneficial effects as follows: in this methane detection alarming instrument, Digiplex separates with the alarm main frame, avoided the parameter of the artificial change arbitrarily of personnel in the pit alarm main frame or because of accident, touched the parameter of changing the alarm main frame, the normal operation of assurance alarm, effectively improve security; The use of Digiplex can effectively reduce, replace physical button or film key on the alarm main frame even fully, and physical button or film key all exist problems such as mechanical life and self are dustproof, waterproof, therefore Digiplex is general to All hosts, can improve dustproof, the waterproof effect of alarm main frame and increase serviceable life.
The accompanying drawing explanation
Fig. 1 is circuit block diagram of the present invention;
Fig. 2 is control module circuit theory diagrams of the present invention;
Fig. 3 is power converting circuit schematic diagram of the present invention;
Fig. 4 is signal acquisition circuit schematic diagram of the present invention;
Fig. 5 is remote-control receiving circuit schematic diagram of the present invention;
Fig. 6 is display circuit schematic diagram of the present invention;
Fig. 7 is warning circuit schematic diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, a kind of methane detection alarming instrument, comprise control module circuit 1, power converting circuit 2, methane infrared probe 3, signal acquisition circuit 4, remote-control receiving circuit 5, display circuit 6 and warning circuit 7, described signal acquisition circuit is connected by IIC IC bus (Inter-Integrated Circuit) communication with the control module circuit, described control module circuit is connected with the warning circuit communication, described control module circuit is connected with the display circuit communication, described control module circuit is connected with the output circuit communication, described remote-control receiving circuit is connected with the communication of control module circuit, the methane concentration that control module circuit 1 will identify shows on display circuit 6, and driving warning circuit 7 sends sound and light alarm, electric power management circuit 2 is each element circuit power supply.
As shown in Fig. 2 control module circuit theory diagrams, described control module circuit 1 major function is real-time data collection, analyzes data, shows data, output signal, in it, include the microprocessor of 32 ARM cortex-m3 kernels, the control chip of described microprocessor is STM32F103, adopt the Harvard structure three class pipeline, processing speed is fast, and has abundant peripheral hardware and stronger antijamming capability, be applicable to Industry Control, can effectively promote data-handling capacity and the response time of complete machine.
As shown in Fig. 3 power converting circuit schematic diagram, described power converting circuit 2 adopts multistage, plurality of voltages conversion, power supply is to all circuit after one-level DC/DC is converted into 5VDC, chip TC1185 voltage stabilizing conversion Hou De tri-road voltages by the accurate voltage-stabilizing device of secondary are the independent voltage of 2.9VDC, 3.3VDC and 3.0VDC again, are respectively used to infrared components, warning circuit and microprocessor and other circuit; Described power converting circuit can effectively improve the excessive voltage fluctuation caused of warning circuit work immediate current, and the impact of the supply voltage rear class voltage fluctuation brought on the low side; Described DC/DC conversion efficiency is not less than 80%, compares other linear voltage stabilization device, has promoted the service efficiency of power supply.
As shown in Fig. 4 signal acquisition circuit schematic diagram, after described signal acquisition circuit 4 completes the sampling and filtering of methane infrared probe simulating signal, utilize A/D converter that simulating signal is transformed to digital signal, again by IIC(Inter-Integrated Circuit) IC bus reaches the microprocessor in described control module circuit 1 by data, for guaranteeing precision and the good reproducibility of sampled data, the A/D converter resolution of described signal acquisition circuit is 16, separately be equipped with one independent for A/D converter provides precision, be 0.1% reference voltage source IC, IC adopts LM4041.
As shown in Fig. 5 remote-control receiving circuit schematic diagram, described remote-control receiving circuit 5 comprises infrared receiving circuit and BL9149 decoding chip, described infrared receiving circuit comprises infrared receiving terminal, filter capacitor, resistor and triode, the base stage of described triode is connected with described receiving end the first port, its collector is connected with resistor RB2 respectively at described decoding chip RxIN port, its grounded emitter; The positive pole of described filter capacitor CB9 be connected to stabilized voltage supply, its minus earth after resistor RB3 is connected; Described receiving end the second port is connected with described decoding chip GND port and grounded emitter point ground connection, its 3rd port is connected between the positive pole and current-limiting resistor RB3 of filter capacitor CB9; Described decoding chip vdd terminal mouth be connected between described resistor RB3 and stabilized voltage supply after the other end of described resistor RB2 is connected, its OCS port be connected to the common ground line after block condenser CB2 is connected, its C2 port be connected to the common ground line after block condenser CB4 is connected, its C3 port directly connects the common ground line, resistor RB1 mono-end connects the common ground line, and the other end is connected between decoding chip OCS port and capacitor CB2.
Digiplex carries out setting or the adjustment of parameter to alarm, in Digiplex, binary coding is through the regulating circuit Signal Regulation, by amplifying circuit rear drive infrared-emitting diode, launch again, when described remote-control receiving circuit 5 receives external infrared signal, by photoelectric receiving device, convert the serial infrared signal to serial electric signal, the microprocessor that this electric signal is delivered in described element circuit by the BL9149 decoding chip is processed, to complete various control functions.
As shown in Fig. 6 display module circuit diagram, described display circuit 6 comprises 4 LED charactrons and 4 drive IC for the driving LED charactron, drive IC is selected 8 edging trigger formula shift register 74HC164, microprocessor in described control module circuit 1 is sent to register 74HC164 by the numerical coding that the IO mouth will need to show serially, register 74HC164 is parallel output coding driving LED charactron, the drive current of every section LED charactron is 20mA to the maximum, it is higher that drive current is got over ambassador's charactron display brightness, this is conducive to the observation of dark surrounds under coal mine.
As shown in Fig. 7 warning circuit schematic diagram, described warning circuit 7 comprises the driving circuit of light emitting diode, active buzzer and light emitting diode and active buzzer, when methane concentration surpasses predefined higher limit, described microprocessor sends signal to driving circuit, this signal is realized the light warning through amplifying the corresponding LED flash of rear drive, drive corresponding hummer sounding and realize acoustic alarm, with the crowd around prompting.
The NDIR (Non-Dispersive Infrared) that methane detection alarming instrument of the present invention adopts detects (NDIR) technology; signal acquisition module is transferred to microprocessor module by the IIC IC bus; through microprocessor, identify, compare; calculate the actual value of current methane concentration; the concentration value that is shown current methane by drive IC driving LED charactron; identify safe concentration environment and the dangerous concentrations environment of methane, and demonstrate different colours to remind operating personnel; When the methane concentration identified surpassed predefined higher limit, microprocessor sent the signal driver respective diode and hummer is realized sound and light alarm.
In addition, as an innovation of the present invention, methane detection alarming instrument of the present invention adopts the remote control reception module, while by receiving Infrared remote controller, readjusting the distribution the infrared signal of penetrating, by photoelectric receiving device, convert the serial infrared signal to serial electric signal, electric signal is reduced to binary coding after detection, shaping, amplification, the different binary code representative operation different to alarm.In this methane detection alarming instrument, because Digiplex separates with the alarm main frame, not only improved the security of alarm, and improved dustproof, the waterproof effect of alarm main frame and increase serviceable life.
Claims (8)
1. a methane detection alarming instrument, comprise
The control module circuit, comprise microprocessor;
Power converting circuit, after the accurate voltage-stabilizing device voltage stabilizing of secondary conversion, be each element circuit power supply;
The methane probe, adopt NDIR (Non-Dispersive Infrared) detection technique methane infrared probe;
Signal acquisition circuit, comprise sampling and the circuit of filtering to the simulating signal of described methane infrared probe;
Warning circuit, comprise the driving circuit of light emitting diode, active buzzer and light emitting diode and active buzzer;
It is characterized in that: also comprise remote-control receiving circuit, described remote-control receiving circuit comprises infrared receiving circuit and decoding chip, described signal acquisition circuit is connected by the communication of IIC IC bus with the control module circuit, described control module circuit is connected with the warning circuit communication, and described remote-control receiving circuit is connected with the communication of control module circuit.
2. a kind of methane detection alarming instrument according to claim 1, it is characterized in that: described infrared receiving circuit comprises infrared receiving terminal, filter capacitor, resistor and triode, the base stage of described triode is connected with described infrared receiving terminal the first port, its collector is connected with resistor RB2 respectively at described decoding chip RxIN port, its grounded emitter; The positive pole of described filter capacitor CB9 be connected to stabilized voltage supply, its minus earth after current-limiting resistor RB3 is connected; Described receiving end the second port is connected with described decoding chip GND port and grounded emitter point ground connection, its 3rd port is connected between the positive pole and resistor RB3 of filter capacitor CB9; Described decoding chip vdd terminal mouth be connected between described resistor RB3 and stabilized voltage supply after the other end of described resistor RB2 is connected, its OCS port be connected to the common ground line after block condenser CB2 is connected, its C2 port be connected to the common ground line after block condenser CB4 is connected, its C3 port directly connects the common ground line, resistor RB1 mono-end connects the common ground line, and the other end is connected between decoding chip OCS port and capacitor CB2.
3. a kind of methane detection alarming instrument according to claim 1 and 2, it is characterized in that: described decoding chip is the BL9149 decoding chip, for electric signal is reduced to binary coding, and it is delivered to described microprocessor and process, to realize the remote control control to alarm.
4. a kind of methane detection alarming instrument according to claim 1 is characterized in that: described microprocessor adopts Harvard's bus structure three class pipeline.
5. a kind of methane detection alarming instrument according to claim 1, it is characterized in that: also comprise display circuit (6), described display circuit comprises 4 LED charactrons and 4 drive IC for the driving LED charactron, and it is luminous that described microprocessor will need the coding shown to be sent to drive IC driving LED charactron by the IO mouth serially.
6. a kind of methane detection alarming instrument according to claim 5, is characterized in that: described drive IC employing 74HC164.
7. methane detection alarming instrument according to claim 4, is characterized in that: the described STM32F103 of microprocessor for 32 ARM cortex-m3 kernels of employing that state.
8. according to described a kind of methane detection alarming instrument one of in claim 4-7, it is characterized in that: the A/D converter resolution of the employing of described signal acquisition circuit is 16, and it is the reference voltage source of 0.1% employing LM4041 that described A/D converter is equipped with an independent precision.
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| CN201310373269XA CN103411883A (en) | 2013-08-23 | 2013-08-23 | Methane detection warning instrument |
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| CN201310373269XA CN103411883A (en) | 2013-08-23 | 2013-08-23 | Methane detection warning instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103770584A (en) * | 2014-02-25 | 2014-05-07 | 上汽通用五菱汽车股份有限公司 | Automatic tire inflation detection all-in-one machine and method for automatically detecting tire by utilizing all-in-one machine |
| CN103927020A (en) * | 2013-12-30 | 2014-07-16 | 北京中安科创科技发展有限公司 | Intrinsically-safe-type keyboard circuit used for electronic equipment in flammable and explosive places |
| CN106248883A (en) * | 2016-08-22 | 2016-12-21 | 安徽工程大学机电学院 | A kind of firedamp sensor and control method thereof |
| CN107044299A (en) * | 2017-02-08 | 2017-08-15 | 深圳凯达通光电科技有限公司 | A kind of alarm for gas leakage |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078680A (en) * | 2006-05-25 | 2007-11-28 | 中国科学院长春光学精密机械与物理研究所 | Coal mine gas density real-time monitoring alarming control system |
| CN201331532Y (en) * | 2009-01-19 | 2009-10-21 | 重庆梅安森科技发展有限责任公司 | Wide range methane sensor device |
| US20120078532A1 (en) * | 2010-09-24 | 2012-03-29 | David Edward Forsyth | Non-dispersive infrared sensor measurement system and method |
| CN202486087U (en) * | 2011-12-12 | 2012-10-10 | 淮南市松江电子有限责任公司 | High-concentration methane sensor for coal mine pipeline |
| CN103234906A (en) * | 2013-04-15 | 2013-08-07 | 贵州省教育厅 | Infrared methane determination device for mining emergency risk avoiding system |
| CN203148881U (en) * | 2012-12-22 | 2013-08-21 | 淮南启迪电子有限公司 | Wireless-network-based methane sensor for mining |
-
2013
- 2013-08-23 CN CN201310373269XA patent/CN103411883A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078680A (en) * | 2006-05-25 | 2007-11-28 | 中国科学院长春光学精密机械与物理研究所 | Coal mine gas density real-time monitoring alarming control system |
| CN201331532Y (en) * | 2009-01-19 | 2009-10-21 | 重庆梅安森科技发展有限责任公司 | Wide range methane sensor device |
| US20120078532A1 (en) * | 2010-09-24 | 2012-03-29 | David Edward Forsyth | Non-dispersive infrared sensor measurement system and method |
| CN202486087U (en) * | 2011-12-12 | 2012-10-10 | 淮南市松江电子有限责任公司 | High-concentration methane sensor for coal mine pipeline |
| CN203148881U (en) * | 2012-12-22 | 2013-08-21 | 淮南启迪电子有限公司 | Wireless-network-based methane sensor for mining |
| CN103234906A (en) * | 2013-04-15 | 2013-08-07 | 贵州省教育厅 | Infrared methane determination device for mining emergency risk avoiding system |
Non-Patent Citations (2)
| Title |
|---|
| 刘忠富等: "红外遥控技术在甲烷传感器中的应用", 《工矿自动化》 * |
| 胡洋: "红外技术在智能化甲烷传感器中的应用研究", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103927020A (en) * | 2013-12-30 | 2014-07-16 | 北京中安科创科技发展有限公司 | Intrinsically-safe-type keyboard circuit used for electronic equipment in flammable and explosive places |
| CN103927020B (en) * | 2013-12-30 | 2018-04-03 | 北京中安科创科技发展有限公司 | A kind of intrinsic safety type keyboard circuit for combustible and explosive area electronic equipment |
| CN103770584A (en) * | 2014-02-25 | 2014-05-07 | 上汽通用五菱汽车股份有限公司 | Automatic tire inflation detection all-in-one machine and method for automatically detecting tire by utilizing all-in-one machine |
| CN106248883A (en) * | 2016-08-22 | 2016-12-21 | 安徽工程大学机电学院 | A kind of firedamp sensor and control method thereof |
| CN107044299A (en) * | 2017-02-08 | 2017-08-15 | 深圳凯达通光电科技有限公司 | A kind of alarm for gas leakage |
| CN107044299B (en) * | 2017-02-08 | 2018-12-04 | 泰兴市智谷科技孵化器中心 | A kind of alarm for gas leakage |
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Application publication date: 20131127 |