CN201661315U - Master-slave type gas sensor - Google Patents
Master-slave type gas sensor Download PDFInfo
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- CN201661315U CN201661315U CN2010201220909U CN201020122090U CN201661315U CN 201661315 U CN201661315 U CN 201661315U CN 2010201220909 U CN2010201220909 U CN 2010201220909U CN 201020122090 U CN201020122090 U CN 201020122090U CN 201661315 U CN201661315 U CN 201661315U
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Abstract
The utility model discloses a master-slave type gas sensor, which comprises a plurality of slave gas sensors used for respectively detecting slave gas concentration and a master gas sensor used for detecting master gas concentration. The master gas sensor is connected with a monitoring substation through a connecting wire, and is used for transmitting a gas concentration signal and receiving a gas concentration signal transmitted by the monitoring substation; and the slave gas sensors are connected with the master gas sensor through wireless communication, gas concentration signals detected by the slave gas sensors are transmitted to the master gas sensor, and then the master gas sensor transmits the signals to the monitoring substation through a signal line. The utility model can realize the simultaneous and continuous monitoring of multiple points within a certain spatial range, and achieve the real-time transmission.
Description
Technical field
The utility model relates to a kind of firedamp sensor, the primary-secondary type gas sensor that use particularly a kind of down-hole again.
Background technology
Prior art can realize certain fixed point position, down-hole is carried out measuring in continuous 24 hours, but can't carry out omnibearing continuous measurement to certain space.And the Gas Distribution in the particular space scope of down-hole, the influence that is subjected to geographical configuration is uneven.For the gas monitor in driving (moving) process, because inconvenient cable connects, existing method is to adopt portable (or machine-carried type) gas monitor to monitor.And its data do not realize " upload function ", and information can not be shared.Before or after disaster took place, because the data disappearance, its monitored data lost practical significance to the prevention and the rescue of disaster.
In addition, existing methane transducer is all the local environment methane concentration information of gathering with regard to its groundwork process, by the conversion and the treatment circuit of this machine, form the methane concentration information that quantizes.The display device that has by sensor itself carries out this locality demonstration; Treatment circuit by this machine is compared the collection value with the alarming value of setting, transfinite and then reported to the police; Simultaneously, unidirectional uploading.And, require the down-hole terminal device to have two-way information transmission and human-computer interaction function based on the monitoring system developing direction of full ore deposit information transparencyization.For methane transducer, i.e. local methane concentration can be gathered and show to requirement, carries out local overload alarm, can utilize remote communicating function again, the methane concentration and the warning message in the relevant place of output far-end.When the disaster incident took place other place, down-hole, the National Officer can in time obtain location information and disaster degree information that disaster takes place by being arranged at the demonstration information of local sensor.The blindness of avoiding escaping and saving oneself.
Summary of the invention
The purpose of this utility model provide a kind of can multiple spot simultaneously, continuous monitoring and can realize the primary-secondary type gas sensor of real-time Transmission.
Primary-secondary type gas sensor of the present utility model comprises:
A plurality of handset firedamp sensors (1) that are used for detecting respectively the handset gas density, be used to detect the machine tool firedamp sensor (2) of machine tool gas density, described machine tool firedamp sensor is connected with Monitor Sub-Station of Less (3) by connecting line, uploads the gas density signal and receives the gas density signal that passes down from Monitor Sub-Station of Less (3); Wherein, described a plurality of handset firedamp sensors (1) carry out radio communication with machine tool firedamp sensor (2) and are connected, the gas density signal wireless that handset firedamp sensor (1) is detected sends to machine tool firedamp sensor (2), is uploaded to Monitor Sub-Station of Less (3) by machine tool firedamp sensor (2) via holding wire again.
Wherein each described handset firedamp sensor comprises:
Be used to detect the handset methane concentration, be converted into first methane transducer (11) of handset methane concentration signal;
Be used for gathering first collecting unit (12) by the methane concentration signal of first methane transducer (11) output;
Be used for handling methane concentration signal, obtain handset methane concentration Value Data, contain the methane concentration packet of handset sign and the first processor (13) of methane concentration alarm signal from first collecting unit (12);
Be used to show the first methane concentration display unit (15) of the handset methane concentration Value Data of first processor (13) output;
Be used for methane concentration alarm signal, send the first methane concentration alarm (14) of sound and light alarm according to first processor (13) output; And
Be used for to first wireless communication unit (16) of the wireless transmission of described machine tool firedamp sensor (2) by the methane concentration packet that contains the handset sign of described first processor (13) output.
Described first processor (13) is connected with first collecting unit, the first methane concentration display unit, the first methane concentration alarm, first wireless communication unit respectively; The methane concentration signal that described first processor receives from first collecting unit (12) carries out calculation process, will handle, comparison result flow to first wireless communication unit or/and the first methane concentration alarm or/and the first methane concentration display unit.
Described machine tool firedamp sensor comprises:
Be used for detecting the methane concentration of machine tool environment, and convert thereof into second methane transducer (21) of methane concentration signal;
Be used for gathering second collecting unit (22) by the methane concentration signal of second methane transducer (21) output;
Be used for handling methane concentration signal from second collecting unit (22), obtain machine tool methane concentration Value Data, contain methane concentration packet and methane concentration alarm signal that machine tool identifies, and be used to handle methane concentration packet from Monitor Sub-Station of Less, obtain having second processor (23) of the far-end methane concentration Value Data of sign;
Be used for the methane concentration packet of processor (23) output is sent to Monitor Sub-Station of Less, and will send to the bidirectional data communication unit (27) of processor (23) from the methane concentration packet of Monitor Sub-Station of Less;
Be used for showing respectively the machine tool methane concentration Value Data of second processor (23) output and the second methane concentration display unit (25) of far-end methane concentration Value Data;
Be used for methane concentration alarm signal, send the second methane concentration alarm (24) of sound and light alarm according to second processor (23) output; And
Be used for receiving the handset methane concentration packet that contains the handset sign by handset firedamp sensor (1) wireless transmission, handle the back via described second processor (23) and show handset methane concentration and sign, and the described handset methane concentration packet that contains the handset sign is uploaded to second wireless communication unit (26) of Monitor Sub-Station of Less (3) via bidirectional data communication unit (27) at the second methane concentration display unit (25).
Described second processor (23) is connected with the second methane concentration display unit, second wireless communication unit, second collecting unit, the second methane concentration alarm, bidirectional data communication unit respectively, and described second collecting unit also is connected with second methane transducer; The methane concentration signal that described second processor receives from second collecting unit carries out calculation process, obtain the methane concentration Value Data, methane concentration Value Data and the methane concentration alarm threshold value data that preset are compared, obtain the methane concentration alarm signal, and, obtain containing the methane concentration packet that machine tool identifies with processings of packing of methane concentration Value Data and the machine tool that presets sign.
Described second processor (23) is connected with Monitor Sub-Station of Less by the bidirectional data communication unit.
The described second methane concentration display unit (25) comprising:
Be used to drive the driver module (251) of described machine tool methane concentration Value Data signal and far-end methane concentration Value Data signal;
Be used to show the machine tool methane concentration display module (253) of the machine tool methane concentration Value Data signal that drives by described driver module 251; And
Be used for showing by driver module (251) drive from the methane concentration Value Data signal of Monitor Sub-Station of Less (3) with from the outside methane concentration display module (252) of the methane concentration Value Data signal of handset firedamp sensor (1).
Described machine tool firedamp sensor (2) also comprise be used to preset described methane concentration alarm threshold value and machine tool sign unit (28) is set.
Described machine tool firedamp sensor (2) also comprises be directly proportional with the methane concentration unidirectional analogue communication unit (29) of unidirectional analog signal of its frequency that is used to receive second processor (23) output.
Described second processor (23) is provided with the methane concentration signal that will amplify and carries out analog-to-digital analog-digital converter.
Technique effect of the present utility model is:
1, can at implement in certain spatial dimension multiple spot simultaneously, continuous monitoring, and can realize real-time Transmission;
2, improve the reliability of the data of gas monitor, reduce the monitoring blind spot;
3, communication is adopted in the transmission of handset and machine tool, and the monitoring point can be moved in restricted portion, can well satisfy the demand of emphasis and comprehensive monitoring.
Below in conjunction with accompanying drawing the utility model is elaborated.
Description of drawings
Fig. 1 is the schematic diagram of primary-secondary type gas sensor of the present utility model;
Fig. 2 is the schematic diagram of handset firedamp sensor of the present utility model;
Fig. 3 is the schematic diagram of machine tool firedamp sensor first embodiment of the present utility model;
Fig. 4 is the schematic diagram of the mechanism of methane concentration display unit shown in Figure 3;
Fig. 5 is the schematic diagram of machine tool firedamp sensor second embodiment of the present utility model;
Fig. 6 is the circuit diagram of handset firedamp sensor shown in Figure 2;
Fig. 7 is the circuit diagram of machine tool firedamp sensor second embodiment shown in Figure 5.
The specific embodiment
Fig. 1 has shown the structure of primary-secondary type gas sensor of the present utility model, comprising: a plurality of handset firedamp sensors 1 are used for detecting respectively the handset gas density; A machine tool firedamp sensor 2 is used to detect the machine tool gas density, and uploads the gas density signal and receive the gas density signal that passes for 3 times from Monitor Sub-Station of Less to Monitor Sub-Station of Less 3 by connecting line; Wherein, a plurality of handset firedamp sensors 1 carry out radio communication with machine tool firedamp sensor 2, the gas density signal wireless that handset firedamp sensor 1 is detected sends to machine tool firedamp sensor 1, is uploaded to Monitor Sub-Station of Less 3 by machine tool firedamp sensor 2 via holding wire again.
Machine tool firedamp sensor 2 of the present utility model links to each other with Monitor Sub-Station of Less 3 by holding wire, has functions such as data acquisition, processing, demonstration, warning, wireless data transceiving, transmission; Handset firedamp sensor 1 is except that the function that has collection, processing, reports to the police, and also with machine tool firedamp sensor 2 wireless transmission in the 50m scope, its image data can show at machine tool firedamp sensor 2, and the machine tool firedamp sensor is reported to the police and shown the some position when transfiniting.In addition, the data that collect of handset firedamp sensor 1 can be uploaded to ground host via Monitor Sub-Station of Less 3 by machine tool firedamp sensor 1.
The gas monitor that handset firedamp sensor of the present utility model 1 is carried out in the tunneling process can send machine tool firedamp sensor 2 to the gas density in driving place is wireless in real time, thus realized multiple spot simultaneously, continuous monitoring and can real-time Transmission.
Fig. 2 has shown the structure of handset firedamp sensor 1 of the present utility model, comprising: methane transducer 11, be used to detect the methane concentration that the handset methane concentration promptly tunnels the place, and be converted into handset methane concentration signal; Collecting unit 12 is used to gather the methane concentration signal by methane transducer 11 outputs; Processor 13 is used to handle the methane concentration signal from collecting unit 12, obtains handset methane concentration Value Data, contains methane concentration packet and methane concentration alarm signal that handset identifies; Methane concentration display unit 15 is used for the handset methane concentration Value Data that video-stream processor 13 is exported; Methane concentration alarm 14 is used for the methane concentration alarm signal according to processor 13 outputs, sends sound and light alarm; Wireless communication unit 16 is used for to the methane concentration packet that contain handset sign of machine tool firedamp sensor 2 wireless transmission by processor 13 outputs.
Each handset firedamp sensor comprises: first methane transducer, be used to detect the handset methane concentration, and be converted into handset methane concentration signal; First collecting unit is used to gather the methane concentration signal by the output of first methane transducer; First processor is used to handle the methane concentration signal from first collecting unit, obtains handset methane concentration Value Data, contains methane concentration packet and methane concentration alarm signal that handset identifies; The first methane concentration display unit is used to the handset methane concentration Value Data that shows that first processor is exported; The first methane concentration alarm is used for the methane concentration alarm signal according to first processor output, sends sound and light alarm; First wireless communication unit is used for to the methane concentration packet that contain handset sign of the wireless transmission of machine tool firedamp sensor by first processor output.
First processor is by carrying out calculation process to the methane concentration signal from first collecting unit, obtain the methane concentration Value Data, methane concentration Value Data and the methane concentration alarm threshold value data that preset are compared, obtain the methane concentration alarm signal, and, obtain the described methane concentration packet that handset identifies that contains with processings of packing of methane concentration Value Data and the handset that presets sign.
Fig. 3 has shown machine tool firedamp sensor structure of the present utility model, and machine tool firedamp sensor 2 comprises as shown in Figure 3:
Operating principle: the machine tool firedamp sensor comprises: second methane transducer is used for detecting the methane concentration of machine tool environment, and converts thereof into the methane concentration signal; Second collecting unit is used to gather the methane concentration signal by the output of second methane transducer; Second processor, be used to handle methane concentration signal from second collecting unit, obtain machine tool methane concentration Value Data, contain methane concentration packet and methane concentration alarm signal that machine tool identifies, and be used to handle methane concentration packet from Monitor Sub-Station of Less, obtain having the far-end methane concentration Value Data of sign; The bidirectional data communication unit is used for the methane concentration packet of processor output is sent to Monitor Sub-Station of Less, and will sends to processor from the methane concentration packet of Monitor Sub-Station of Less; The second methane concentration display unit is used for the machine tool methane concentration Value Data and the far-end methane concentration Value Data that show that respectively second processor is exported; The second methane concentration alarm is used for the methane concentration alarm signal according to the output of second processor, sends sound and light alarm; Second wireless communication unit, be used to receive the handset methane concentration packet that contains the handset sign by handset firedamp sensor wireless transmission, via showing handset methane concentration and sign at the second methane concentration display unit after second processor processing, and the described handset methane concentration packet that contains the handset sign is uploaded to Monitor Sub-Station of Less via the bidirectional data communication unit.
Wherein, second processor is by carrying out calculation process to the methane concentration signal from second collecting unit, obtain the methane concentration Value Data, methane concentration Value Data and the methane concentration alarm threshold value data that preset are compared, obtain the methane concentration alarm signal, and, obtain containing the methane concentration packet that machine tool identifies with processings of packing of methane concentration Value Data and the machine tool that presets sign.
Wherein, second processor is by to the processing of unpacking from the methane concentration packet of Monitor Sub-Station of Less, obtain having sign as far-end methane concentration Value Data.
Wherein, the second methane concentration display unit comprises: driver module is used to drive machine tool methane concentration Value Data signal and far-end methane concentration Value Data signal; Machine tool methane concentration display module is used to show the machine tool methane concentration Value Data signal that is driven by driver module; Outside methane concentration display module, be used to show by driver module drive from the methane concentration Value Data signal of Monitor Sub-Station of Less with from the methane concentration Value Data signal of handset firedamp sensor.
Wherein, the machine tool firedamp sensor also comprises the unit is set, and is used to preset methane concentration alarm threshold value and machine tool sign.
Wherein, second processor has the methane concentration signal that will amplify and carries out analog-to-digital analog-digital converter.
Fig. 4 has shown the concrete structure of the methane concentration display unit 25 of machine tool firedamp sensor, comprising: driver module 251 is used to drive the methane concentration Value Data signal of machine tool methane concentration Value Data signal and far-end and handset; Machine tool methane concentration display module 253 is used to show the machine tool methane concentration Value Data signal that is driven by driver module 251; And outside methane concentration display module 252, be used to show by driver module 251 drive from the methane concentration Value Data signal of Monitor Sub-Station of Less 3 with from the methane concentration Value Data signal of handset firedamp sensor 1.
Fig. 5 has shown second embodiment of machine tool firedamp sensor of the present utility model, and the difference of it and first embodiment only is to have increased unit 28 and unidirectional analogue communication unit 29 be set.
Its frequency that unidirectional analogue communication unit 29 is used for receiving processor 23 output unidirectional analog signal that is directly proportional with methane concentration, this unidirectional analog signal also can be given ground host via the Monitor Sub-Station of Less branch.
Fig. 6 has shown the physical circuit figure of handset firedamp sensor 1 of the present utility model.Methane transducer 11 is a catalytic combustion type methane sensing element, comprises RH, two elements of RB black and white, and their same R5, R6, W1 form electric bridge, the signal of telecommunication that the A of electric bridge, the output of B two ends change with extraneous concentration of methane gas.After the amplifying circuit that centralized procurement unit 12 is made up of elements such as IC3, the signal of telecommunication are amplified by collecting unit 12 and handle, be transferred to the inner A/D Acquisition Circuit of microprocessor IC4 (being processor 13), form data signal.Through the processing of microprocessor, form the digital information (namely for methane concentration value data) of methane concentration.Be transferred to machine tool firedamp sensor 2 via wireless receiving and dispatching radio-frequency module RF_M and PCB printed antenna as wireless communication unit 16.Simultaneously, methane concentration information is shown that by the digital display module S1 of methane concentration display unit 15 wherein IC6 is a driver module.When methane concentration is higher than setting value, the exportable control signal of microprocessor, through the on-off circuit of forming by VT2 etc., the sound light alarming circuit namely for methane concentration alarm 14 that control is made up of LED light emitting diode VL1, electric magnetic buzzer BUZ1, generation sound and light alarm signal.Power circuit is made up of IC1, IC2 etc.Wherein by IC2 produce+the 3V power supply supplies with sensing element, IC1 produces+the 5V power supply supplies with other circuit of this instrument.By the back-up source that battery pack BT1 and isolating diode VD2 form, can when no alternating current, keep the work of this instrument.
Fig. 7 has shown the circuit of machine tool firedamp sensor of the present utility model, methane transducer 21 constitutes electric bridge by black, the white same R5 of element RH/RB, R6 and the W1 of catalytic combustion type methane sensing element MJC4, the signal of telecommunication that the A of electric bridge, the output of B two ends change with extraneous concentration of methane gas.Through amplification by the amplifying circuit of forming as the elements such as IC3 of collecting unit 22, be transferred to the inner A/D Acquisition Circuit of microprocessor IC4 (processor 23), form data signal.Through the calculation process of microprocessor, form the digital information (namely for methane concentration value data) of methane concentration.Concentration information can carry out this locality by the digital display module of the S1 of machine tool methane concentration display unit 253 and show that wherein IC6 is the driver module 251 of machine tool.Component frequency type communication interface circuits such as VT3 are unidirectional analogue communication unit 29, are used to export the frequency signal that is directly proportional with concentration, can be uploaded to equipment such as substation; The RS485 digital telecommunication circuit that is made of IC7 is bidirectional data communication unit 27, the mode of concentration information with digital communication can be sent to equipment such as substation.When methane concentration surpasses setting value, can pass through sound light alarming circuit (methane concentration alarm 24) the output sound and light alarm signal that IC8, VL1, VL2 etc. form.Radio-frequency module, PCB printed antenna are formed wireless communication unit 26, communicate with handset, and the monitor signal of handset is sent to microprocessor.By processor to the image data of handset handle, demonstration and overload alarm, digital display module S2 (being outside methane concentration display module 252) is used to circulate and shows the monitor value of each handset, when the monitor value of certain handset transfinites, carry out sound and light alarm by machine tool.The monitoring information of handset can pass through the RS485 communication interface, transfers to equipment such as substation.Composition such as SFH1, IC5 remote-control receiving circuit (unit 28 promptly is set) with the microcontroller circuit cooperating, is used for being provided with by remote controller operations such as alarm threshold, adjustment sensor.IC1, IC2 etc. form power supply and holding circuit, and+3V is the sensing element power supply, and+5V provides the power supply supply for other all unit of sensor.
Although above the utility model is had been described in detail, the utility model is not limited thereto, and those skilled in the art of the present technique can carry out various modifications according to principle of the present utility model.Therefore, all modifications of being done according to the utility model principle all should be understood to fall into protection domain of the present utility model.
Claims (10)
1. primary-secondary type gas sensor, it is characterized in that comprising: a plurality of handset firedamp sensors (1) that are used for detecting respectively the handset gas density, be used to detect the machine tool firedamp sensor (2) of machine tool gas density, described machine tool firedamp sensor is connected with Monitor Sub-Station of Less (3) by connecting line, uploads the gas density signal and receives the gas density signal that passes down from Monitor Sub-Station of Less (3); Wherein, described a plurality of handset firedamp sensors (1) carry out radio communication with machine tool firedamp sensor (2) and are connected, the gas density signal wireless that handset firedamp sensor (1) is detected sends to machine tool firedamp sensor (2), is uploaded to Monitor Sub-Station of Less (3) by machine tool firedamp sensor (2) via holding wire again.
2. primary-secondary type gas sensor according to claim 1, wherein each described handset firedamp sensor comprises:
Be used to detect the handset methane concentration, be converted into first methane transducer (11) of handset methane concentration signal;
Be used for gathering first collecting unit (12) by the methane concentration signal of first methane transducer (11) output;
Be used for handling methane concentration signal, obtain handset methane concentration Value Data, contain the methane concentration packet of handset sign and the first processor (13) of methane concentration alarm signal from first collecting unit (12);
Be used to show the first methane concentration display unit (15) of the handset methane concentration Value Data of first processor (13) output;
Be used for methane concentration alarm signal, send the first methane concentration alarm (14) of sound and light alarm according to first processor (13) output; And
Be used for to first wireless communication unit (16) of the wireless transmission of described machine tool firedamp sensor (2) by the methane concentration packet that contains the handset sign of described first processor (13) output.
3. primary-secondary type gas sensor according to claim 2, wherein said first processor (13) are connected with first collecting unit, the first methane concentration display unit, the first methane concentration alarm, first wireless communication unit respectively; The methane concentration signal that described first processor receives from first collecting unit (12) carries out calculation process, will handle, comparison result flow to first wireless communication unit or/and the first methane concentration alarm or/and the first methane concentration display unit.
4. according to claim 2 or 3 described primary-secondary type gas sensors, wherein said machine tool firedamp sensor comprises:
Be used for detecting the methane concentration of machine tool environment, and convert thereof into second methane transducer (21) of methane concentration signal;
Be used for gathering second collecting unit (22) by the methane concentration signal of second methane transducer (21) output;
Be used for handling methane concentration signal from second collecting unit (22), obtain machine tool methane concentration Value Data, contain methane concentration packet and methane concentration alarm signal that machine tool identifies, and be used to handle methane concentration packet from Monitor Sub-Station of Less, obtain having second processor (23) of the far-end methane concentration Value Data of sign;
Be used for the methane concentration packet of processor (23) output is sent to Monitor Sub-Station of Less, and will send to the bidirectional data communication unit (27) of processor (23) from the methane concentration packet of Monitor Sub-Station of Less;
Be used for showing respectively the machine tool methane concentration Value Data of second processor (23) output and the second methane concentration display unit (25) of far-end methane concentration Value Data;
Be used for methane concentration alarm signal, send the second methane concentration alarm (24) of sound and light alarm according to second processor (23) output; And
Be used for receiving the handset methane concentration packet that contains the handset sign by handset firedamp sensor (1) wireless transmission, handle the back via described second processor (23) and show handset methane concentration and sign, and the described handset methane concentration packet that contains the handset sign is uploaded to second wireless communication unit (26) of Monitor Sub-Station of Less (3) via bidirectional data communication unit (27) at the second methane concentration display unit (25).
5. primary-secondary type gas sensor according to claim 4, wherein said second processor (23) is connected with the second methane concentration display unit, second wireless communication unit, second collecting unit, the second methane concentration alarm, bidirectional data communication unit respectively, and described second collecting unit also is connected with second methane transducer; The methane concentration signal that described second processor receives from second collecting unit carries out calculation process, obtain the methane concentration Value Data, methane concentration Value Data and the methane concentration alarm threshold value data that preset are compared, obtain the methane concentration alarm signal, and, obtain containing the methane concentration packet that machine tool identifies with processings of packing of methane concentration Value Data and the machine tool that presets sign.
6. primary-secondary type gas sensor according to claim 5, wherein said second processor (23) is connected with Monitor Sub-Station of Less by the bidirectional data communication unit.
7. primary-secondary type gas sensor according to claim 4, the wherein said second methane concentration display unit (25) comprising:
Be used to drive the driver module (251) of described machine tool methane concentration Value Data signal and far-end methane concentration Value Data signal;
Be used to show the machine tool methane concentration display module (253) of the machine tool methane concentration Value Data signal that drives by described driver module 251; And
Be used for showing by driver module (251) drive from the methane concentration Value Data signal of Monitor Sub-Station of Less (3) with from the outside methane concentration display module (252) of the methane concentration Value Data signal of handset firedamp sensor (1).
8. primary-secondary type gas sensor according to claim 4, wherein said machine tool firedamp sensor (2) also comprise be used to preset described methane concentration alarm threshold value and machine tool sign unit (28) is set.
9. primary-secondary type gas sensor according to claim 8, wherein said machine tool firedamp sensor (2) also comprise be directly proportional with the methane concentration unidirectional analogue communication unit (29) of unidirectional analog signal of its frequency that is used to receive second processor (23) output.
10. primary-secondary type gas sensor according to claim 4, wherein said second processor (23) are provided with the methane concentration signal that will amplify and carry out analog-to-digital analog-digital converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201220909U CN201661315U (en) | 2010-03-03 | 2010-03-03 | Master-slave type gas sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201220909U CN201661315U (en) | 2010-03-03 | 2010-03-03 | Master-slave type gas sensor |
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| CN201661315U true CN201661315U (en) | 2010-12-01 |
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| CN2010201220909U Expired - Fee Related CN201661315U (en) | 2010-03-03 | 2010-03-03 | Master-slave type gas sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787899A (en) * | 2010-03-03 | 2010-07-28 | 北京鑫源九鼎科技有限公司 | Primary-secondary type gas sensor |
| CN107401424A (en) * | 2017-08-19 | 2017-11-28 | 安徽泛亚环保科技有限公司 | A kind of gas monitoring system based on Internet of Things |
| CN108167022A (en) * | 2017-12-25 | 2018-06-15 | 天地（常州）自动化股份有限公司 | A kind of gas monitoring and data comparison method based on coal mine safety monitoring system |
-
2010
- 2010-03-03 CN CN2010201220909U patent/CN201661315U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787899A (en) * | 2010-03-03 | 2010-07-28 | 北京鑫源九鼎科技有限公司 | Primary-secondary type gas sensor |
| CN107401424A (en) * | 2017-08-19 | 2017-11-28 | 安徽泛亚环保科技有限公司 | A kind of gas monitoring system based on Internet of Things |
| CN108167022A (en) * | 2017-12-25 | 2018-06-15 | 天地（常州）自动化股份有限公司 | A kind of gas monitoring and data comparison method based on coal mine safety monitoring system |
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| C14 | Grant of patent or utility model | ||
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| DD01 | Delivery of document by public notice |
Addressee: Ma Shifeng Document name: Notification of Termination of Patent Right |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20130303 |