CN201885963U - Miniature gas detector - Google Patents
Miniature gas detector Download PDFInfo
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- CN201885963U CN201885963U CN2010206343888U CN201020634388U CN201885963U CN 201885963 U CN201885963 U CN 201885963U CN 2010206343888 U CN2010206343888 U CN 2010206343888U CN 201020634388 U CN201020634388 U CN 201020634388U CN 201885963 U CN201885963 U CN 201885963U
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- gas detector
- interconnecting module
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Abstract
The utility model relates to a miniature gas detector, which comprises a sensor module and a switching module, wherein the switching module is provided with a pin and an external interface unit, the sensor module is provided with a socket, and the switching module and the sensor module are fixed through the insertion of the pin and the socket. When the miniature gas detector with the structure is adopted, because the miniature gas detector comprises the sensor module and the switching module, the switching module is provided with the pin and the external interface unit, the sensor module is provided with the socket, and the switching module and the sensor module are fixed through the insertion of the pin and the socket, different sensor modules of the miniature gas detector can be conveniently replaced, and accordingly the miniature gas detector is applied to places with different target detection gases.
Description
Technical field
The utility model relates to the gas detector structure field, and particularly microsensor structure field specifically is meant a kind of minitype gas detector.
Background technology
In for the hazardous area classification, damp and toxic and harmful may appear in He Er district, a district, endanger public security.Therefore the using gases detector is predicted detection to the hazardous gas accident, and takes precautions against in view of the above and seem particularly important.At industrial circle, the kind that hazardous gas occurs is variation extremely, and the hazardous area environment is also very abominable usually, and therefore different hazardous gas being protected has simultaneously also become to exigence the most in the detection of gas of hazardous area.Because the difference of acquisition environment, to the degree difference of public danger, the output information mode and the mounting means that need are also different.Existing detector generally all is single detection structure, and each panel detector structure can only detect a kind of gas, and the output mode simplification.This just makes that use-pattern has significant limitation, and promptly a kind of detector can only be united use with the controlling alarm apparatus of single associative mode, and can't unite use with other warning device, so the use-pattern underaction.In addition, also very important to the installation and maintenance of industrial gasses detector.Existing gas detector is changed the probe of probe gas kind, or changes the probe that damages, or when carrying out interval adjustment work, whole probe complete machine must be disassembled whole replacings.Therefore operate more complicated,, for example be arranged at the gas detection apparatus of eminence, change probe and will seem very difficult especially in some places, building site with a varied topography.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, provides a kind of general interconnecting module that has, switchable various sensors, and has a general output interface, simple in structure, with low cost, and range of application minitype gas detector comparatively widely.
In order to realize above-mentioned purpose, minitype gas detector of the present utility model has following formation:
This minitype gas detector comprises sensor assembly and interconnecting module, described interconnecting module has contact pin and external interface unit, described sensor assembly has socket, and described interconnecting module and described sensor assembly are pegged graft fixing by described contact pin and socket.
In this minitype gas detector, described sensor assembly comprises sensor unit, the sensor parameters unit, signal amplifies output unit, microprocessor unit and sensor assembly power supply unit, described sensor assembly power supply unit connects described sensor unit respectively, sensor parameters unit and microprocessor unit, described sensor unit amplifies output unit by described sensor parameters unit and signal in proper order and is connected described microprocessor unit, and described microprocessor unit all is connected described interconnecting module by described socket with the sensor assembly power supply unit with contact pin.
In this minitype gas detector, described sensor unit is a kind of in infrared combustible gas sensor, infrared carbon dioxide gas sensor, catalysis combustible gas sensor, semiconductor combustible gas sensor, poisonous gas sensor and the oxygen sensor.
In this minitype gas detector, described sensor assembly also comprises adjustment port, analog to digital conversion port and information communication port, and the output terminal of described microprocessor unit is connected described socket by described adjustment port, analog to digital conversion port and information communication port respectively.
In this minitype gas detector, described sensor parameters unit comprises reference voltage reference circuit and sensor parameters circuit, the output terminal of described reference voltage reference circuit and sensor parameters circuit all is connected signal and amplifies output unit, the input end of described reference voltage reference circuit connects described sensor assembly power supply unit, and the input end of described sensor parameters circuit connects described sensor unit.
In this minitype gas detector, described sensor assembly also comprises temperature compensation unit, and described temperature compensation unit is connected in described microprocessor unit.
In this minitype gas detector, described interconnecting module also comprises interconnecting module power supply unit, hardware adjustment unit, information communication unit and D/A conversion unit, described interconnecting module power supply unit connects described hardware adjustment unit and D/A conversion unit respectively, described interconnecting module power supply unit, hardware adjustment unit, information communication unit and D/A conversion unit all are connected described external interface unit and described contact pin, and are connected described sensor assembly with socket by described contact pin.
In this minitype gas detector, described external interface unit comprises power lead, digital data transmission line, transmission line analog signal and calibration line, described power lead is connected in described interconnecting module power supply unit, described digital data transmission line is connected in described information communication unit, described transmission line analog signal is connected in described D/A conversion unit, and described calibration line is connected in described hardware adjustment unit.
In this minitype gas detector, described sensor assembly comprises a sensor wrap, and described socket is arranged at an end of sensor wrap, and the other end of described sensor wrap is provided with air intake opening.
In this minitype gas detector, described interconnecting module comprises a standard adapter, and an end of described standard adapter is described contact pin, and the other end is described external interface unit.Described standard adapter is the standard thread joint.
In this minitype gas detector, described minitype gas detector also comprises housing, and described housing is connected and fixed on described interconnecting module, and described sensor assembly is arranged in the described housing.One end of described housing be fixedly connected on interconnecting module, the other end of housing is provided with fly net.
Adopted the minitype gas detector of this utility model, because it comprises sensor assembly and interconnecting module, and interconnecting module has contact pin and external interface unit, sensor assembly has socket, interconnecting module and sensor assembly are pegged graft fixing by contact pin and socket, make this gas detector can change different sensor assemblies easily, thereby be applied to have the place of different target probe gas.Of the present utility model simple in structure, with low cost, and range of application is comparatively extensive.
Description of drawings
Fig. 1 is the functional module structure synoptic diagram of minitype gas detector of the present utility model.
Fig. 2 is the partition structural representation of minitype gas detector of the present utility model.
Embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also Figure 1 and Figure 2, be respectively the functional module structure synoptic diagram and the partition structural representation of minitype gas detector of the present utility model.
In a kind of embodiment of the present utility model, this minitype gas detector comprises sensor assembly 1 and interconnecting module 2, interconnecting module 2 has contact pin 21 and external interface unit 22, sensor assembly 1 has socket 11, and interconnecting module 2 is pegged graft fixing with 1 of sensor die by described contact pin 21 and socket 11.Wherein, described sensor assembly 1 comprises that sensor unit 12, sensor parameters unit, signal amplify output unit, microprocessor unit and sensor assembly power supply unit.Described sensor assembly power supply unit connects described sensor unit 12, sensor parameters unit and microprocessor unit respectively, described sensor unit 12 orders are amplified output unit by described sensor parameters unit and signal and are connected described microprocessor unit, and described microprocessor unit all is connected described interconnecting module 2 by described socket 11 with the sensor assembly power supply unit with contact pin 21.Sensor assembly 1 also comprises adjustment port, analog to digital conversion port and information communication port.The output terminal of described microprocessor unit is connected described socket 11 by described adjustment port, analog to digital conversion port and information communication port respectively.Described interconnecting module 2 also comprises interconnecting module power supply unit, hardware adjustment unit, information communication unit and D/A conversion unit, described interconnecting module power supply unit connects described hardware adjustment unit and D/A conversion unit respectively, described interconnecting module power supply unit, hardware adjustment unit, information communication unit and D/A conversion unit all are connected described external interface unit 22 and described contact pin 21, and are connected described sensor assembly 1 with socket 11 by described contact pin 21.The external interface unit 22 of described interconnecting module 2 comprises power lead, digital data transmission line, transmission line analog signal and calibration line, described power lead is connected in described interconnecting module power supply unit, described digital data transmission line is connected in described information communication unit, described transmission line analog signal is connected in described D/A conversion unit, and described calibration line is connected in described hardware adjustment unit.
In this embodiment, described sensor unit 12 is a kind of in infrared combustible gas sensor, infrared carbon dioxide gas sensor, catalysis combustible gas sensor, semiconductor combustible gas sensor, poisonous gas sensor and the oxygen sensor.
A kind of preferred embodiment in, described sensor assembly 1 also comprises temperature compensation unit, described temperature compensation unit is connected in described microprocessor unit.
In another preferred embodiment, sensor parameters unit in the described sensor assembly 1 comprises reference voltage reference circuit and sensor parameters circuit, the output terminal of described reference voltage reference circuit and sensor parameters circuit all is connected signal and amplifies output unit, the input end of described reference voltage reference circuit connects described sensor assembly power supply unit, and the input end of described sensor parameters circuit connects described sensor unit 12.
Another preferred embodiment in, described sensor assembly 1 comprises a sensor wrap 13, described socket 11 is arranged at an end of sensor wrap 13, the other end of described sensor wrap 13 is provided with air intake opening.Described interconnecting module 2 comprises a standard adapter 23, and an end of described standard adapter 23 is described contact pin 21, and the other end is described external interface unit 22.Described standard adapter 23 is the standard thread joint.
In preferred embodiment, described minitype gas detector also comprises housing 3, and described housing 3 is connected and fixed on described interconnecting module 2, and described sensor assembly 1 is arranged in the described housing 3.One end of described housing 3 be fixedly connected on interconnecting module 2, the other end of housing 3 is provided with fly net 31.
In actual applications, minitype gas detector of the present utility model as shown in Figure 2, is connected to form by sensor assembly 1 and interconnecting module 2.Interconnecting module 2 connects different sensor assembly 1 can form the detector of surveying gas with various.Sensor assembly 1 is formed by connecting by the 4th printed circuit board (PCB) 44 and the 5th printed circuit board (PCB) 45, major function is the processes sensor output signal, microprocessor unit is exported in amplification to signal Processing, microprocessor unit is realized communication function by software programming, and functions such as analog to digital conversion, temperature compensation and nonlinear compensation.Interconnecting module 2 is formed by connecting by first printed circuit board (PCB) 41, second printed circuit board (PCB) 42 and the 3rd printed circuit board (PCB) 43, and mainly for the unified digital-to-analog conversion output current signal of realizing, interface is demarcated in switching RS485 communication interface circuit and zeroing.
This minitype gas detector also comprises housing 3, adapter 23 and sensor wrap 13.Sensor assembly 1 is connected with socket 11 by contact pin 21 with interconnecting module 2, can plug and play.Interconnecting module 2 is a universal component, changes the test gas kind as required, only needs directly to change the good sensor assembly 1 of matching and calibration and gets final product.
Described sensor assembly 1 is potted in the sensor wrap 13, forms an integrated sensor.Described sensor assembly 1 is made up of the 4th printed circuit board (PCB) 44, the 5th printed circuit board (PCB) 45 and sensor 12.
The 5th printed circuit board (PCB) 45 is to be made of sensor parameters circuit, reference voltage circuit, sensor signal amplification and output circuit.The sensor parameters circuit is the circuit that design is set according to the required parameter of different sensors, the parametric circuit that main reference sensor producer provides.The reference voltage circuit is in order to raise the zero signal sampled value of detector, can to carry out the hardware safety processing to negative the floating of detector like this.The sensor signal amplifying circuit is made of two stage amplifer, connects with reserving resistance between the two stage amplifer, and purpose is to dispose enlargement factor according to the signal power of sensor own.
The 4th printed circuit board (PCB) 44 by+5V commentaries on classics+2.5V ,+3.3V power circuit and analog to digital conversion, the RS485 communicating circuit, microprocessing unit circuit such as sensor temperature compensating circuit are formed.+ 5V commentaries on classics+2.5V mainly is for the catalytic type sensor provides power supply, and+5V commentaries on classics+3.3V mainly is the power supply that use is provided for infrared type sensor and microprocessor thereof.After embedded micro-processor pick-up transducers signal carries out anti-interference process, temperature compensation, nonlinear compensation, be given to adapter unit on the one hand and carry out digital-to-analog conversion output simulating signal, on the other hand by digital communication pattern and external interface.
The RS485 communicating circuit adopts the programming read command of MODUBUS agreement and the write order of standard universal to finish digital communication.Communicate by letter with extraneous by two differential signals, can realize sensor zeroing and demarcation, and read functions such as concentration and read transducer information.
To carrying out transducer calibration, these demarcate information storage such as test data and sensor type testing range in microprocessor, make sensor intelligentization before installation.
First printed circuit board (PCB) 41 in the interconnecting module 2 is mainly handled the 24V power supplys of the outside input of protection, and the analog current signal of exporting is carried out anti-interference process, and the output of telecommunication circuit interface is handled, and interface is demarcated in switching.
Second printed circuit board (PCB) 42 mainly is the DC-to-dc change-over circuit, and the 24V power source conversion is become the 5V power supply.
The 3rd printed circuit board (PCB) 43 mainly is hardware adjustment circuit and D/A converting circuit.D/A converting circuit output 4～20mA current signal adopts precision photoelectric coupler transportation simulator current signal.
First printed circuit board (PCB) 41, second printed circuit board (PCB) 42 and the 3rd printed circuit board (PCB) 43 usefulness contact pin connectors are connected to each other, and are potted in the adapter 23.
Adopted the minitype gas detector of this utility model, because it comprises sensor assembly and interconnecting module, and interconnecting module has contact pin and external interface unit, sensor assembly has socket, interconnecting module and sensor assembly are pegged graft fixing by contact pin and socket, make this gas detector can change different sensor assemblies easily, thereby be applied to have the place of different target probe gas.Of the present utility model simple in structure, with low cost, and range of application is comparatively extensive.
In this instructions, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (13)
1. minitype gas detector, it is characterized in that, described minitype gas detector comprises sensor assembly and interconnecting module, described interconnecting module has contact pin and external interface unit, described sensor assembly has socket, and described interconnecting module and described sensor assembly are pegged graft fixing by described contact pin and socket.
2. minitype gas detector according to claim 1, it is characterized in that, described sensor assembly comprises sensor unit, the sensor parameters unit, signal amplifies output unit, microprocessor unit and sensor assembly power supply unit, described sensor assembly power supply unit connects described sensor unit respectively, sensor parameters unit and microprocessor unit, described sensor unit amplifies output unit by described sensor parameters unit and signal in proper order and is connected described microprocessor unit, and described microprocessor unit all is connected described interconnecting module by described socket with the sensor assembly power supply unit with contact pin.
3. minitype gas detector according to claim 2, it is characterized in that described sensor unit is a kind of in infrared combustible gas sensor, infrared carbon dioxide gas sensor, catalysis combustible gas sensor, semiconductor combustible gas sensor, poisonous gas sensor and the oxygen sensor.
4. minitype gas detector according to claim 2, it is characterized in that, described sensor assembly also comprises adjustment port, analog to digital conversion port and information communication port, and the output terminal of described microprocessor unit is connected described socket by described adjustment port, analog to digital conversion port and information communication port respectively.
5. minitype gas detector according to claim 2, it is characterized in that, described sensor parameters unit comprises reference voltage reference circuit and sensor parameters circuit, the output terminal of described reference voltage reference circuit and sensor parameters circuit all is connected signal and amplifies output unit, the input end of described reference voltage reference circuit connects described sensor assembly power supply unit, and the input end of described sensor parameters circuit connects described sensor unit.
6. minitype gas detector according to claim 2 is characterized in that described sensor assembly also comprises temperature compensation unit, and described temperature compensation unit is connected in described microprocessor unit.
7. minitype gas detector according to claim 1, it is characterized in that, described interconnecting module also comprises interconnecting module power supply unit, hardware adjustment unit, information communication unit and D/A conversion unit, described interconnecting module power supply unit connects described hardware adjustment unit and D/A conversion unit respectively, described interconnecting module power supply unit, hardware adjustment unit, information communication unit and D/A conversion unit all are connected described external interface unit and described contact pin, and are connected described sensor assembly with socket by described contact pin.
8. minitype gas detector according to claim 7, it is characterized in that, described external interface unit comprises power lead, digital data transmission line, transmission line analog signal and calibration line, described power lead is connected in described interconnecting module power supply unit, described digital data transmission line is connected in described information communication unit, described transmission line analog signal is connected in described D/A conversion unit, and described calibration line is connected in described hardware adjustment unit.
9. according to each described minitype gas detector in the claim 1 to 8, it is characterized in that described sensor assembly comprises a sensor wrap, described socket is arranged at an end of sensor wrap, and the other end of described sensor wrap is provided with air intake opening.
10. according to each described minitype gas detector in the claim 1 to 8, it is characterized in that described interconnecting module comprises a standard adapter, an end of described standard adapter is described contact pin, and the other end is described external interface unit.
11. minitype gas detector according to claim 10 is characterized in that, described standard adapter is the standard thread joint.
12. according to each described minitype gas detector in the claim 1 to 8, it is characterized in that, described minitype gas detector also comprises housing, and described housing is connected and fixed on described interconnecting module, and described sensor assembly is arranged in the described housing.
13. minitype gas detector according to claim 12 is characterized in that, an end of described housing be fixedly connected on interconnecting module, the other end of housing is provided with fly net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206343888U CN201885963U (en) | 2010-11-30 | 2010-11-30 | Miniature gas detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206343888U CN201885963U (en) | 2010-11-30 | 2010-11-30 | Miniature gas detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201885963U true CN201885963U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206343888U Expired - Lifetime CN201885963U (en) | 2010-11-30 | 2010-11-30 | Miniature gas detector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749358A (en) * | 2012-07-11 | 2012-10-24 | 西北工业大学 | Universal biochemical index measuring system |
| CN104807968A (en) * | 2015-05-11 | 2015-07-29 | 杭州北辰光电技术有限公司 | Gas sensor and identification and calibration method thereof |
| CN104849405A (en) * | 2015-04-29 | 2015-08-19 | 无锡时和安全设备有限公司 | Intelligent gas detector adjusting system |
| CN105548502A (en) * | 2016-01-28 | 2016-05-04 | 河北先河环保科技股份有限公司 | Air quality detector |
| CN108896108A (en) * | 2018-06-08 | 2018-11-27 | 深圳市无眼界科技有限公司 | A kind of decoupled sensor arrangement and online gas detector |
-
2010
- 2010-11-30 CN CN2010206343888U patent/CN201885963U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749358A (en) * | 2012-07-11 | 2012-10-24 | 西北工业大学 | Universal biochemical index measuring system |
| CN104849405A (en) * | 2015-04-29 | 2015-08-19 | 无锡时和安全设备有限公司 | Intelligent gas detector adjusting system |
| CN104807968A (en) * | 2015-05-11 | 2015-07-29 | 杭州北辰光电技术有限公司 | Gas sensor and identification and calibration method thereof |
| CN105548502A (en) * | 2016-01-28 | 2016-05-04 | 河北先河环保科技股份有限公司 | Air quality detector |
| CN108896108A (en) * | 2018-06-08 | 2018-11-27 | 深圳市无眼界科技有限公司 | A kind of decoupled sensor arrangement and online gas detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: AEGIS INDUSTRIAL SAFETY EQUIPMENT CO., LTD. Free format text: FORMER NAME: AEGIS INDUSTRIAL SAFETY CORPORATION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201204 Shanghai city Pudong New Area Lianxi road 1210 Building No. 3 Patentee after: SHANGHAI AEGIS INDUSTRIAL SAFETY CORPORATION Address before: 201204 Shanghai city Pudong New Area Lianxi road 1210 Building No. 3 Patentee before: Shanghai Yijie Industrial Security Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |