CN203772788U - Multi-gas sensor device - Google Patents
Multi-gas sensor device Download PDFInfo
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- CN203772788U CN203772788U CN201420105842.9U CN201420105842U CN203772788U CN 203772788 U CN203772788 U CN 203772788U CN 201420105842 U CN201420105842 U CN 201420105842U CN 203772788 U CN203772788 U CN 203772788U
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- gas sensor
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Abstract
The utility model relates to a gas sensor and particularly relates to a multi-gas sensor device. The multi-gas sensor device provided by the utility model comprises a power supply module, a main circuit board, an RS485 serial communication module, a gas sensor module interface and an integrated gas sensor pre-processing module, wherein the integrated gas sensor pre-processing module is connected with the main circuit board by the gas sensor module interface; the power supply module is connected with the main circuit board; the main circuit board is connected with the RS485 serial communication module. The multi-gas sensor device disclosed by the utility model has the beneficial effects that various gases can be detected by the integrated gas sensor pre-processing module, the detecting efficiency is high, the operation is simple and the size is small.
Description
Technical field
The utility model relates to gas sensor, relates in particular to a kind of multi-gas sensor device.
Background technology
When China's economy develops rapidly, room air pollution, has become a large killer who affects health of people.The data that provide according to Chinese indoor environment monitoring center, what China was caused by room air pollution every year exceed the quata, and death toll can reach 11.1 ten thousand people, and the outpatient service number that exceeds the quata can reach 220,000 person-times, and the emergency treatment number that exceeds the quata can reach 4,300,000 person-times.Serious indoor environmental pollution not only causes damage to health of people, and has caused huge economic loss, and only the economic loss that causes because of indoor environmental pollution health risk of China is just up to 10,700,000,000 dollars nineteen ninety-five.Therefore indoor air quality testing necessitates.
From current detection analysis, the main source of indoor air pollutants has the following aspects: building and house decorative material, central air conditioning ventilating duct pollute and people activity itself.And present stage most of IAQ (indoor air quality) detection methods also rest on the detection method basis of traditional air quality.
Traditional Detection of Air Quality mode is mainly fixed against professional detecting instrument, and the feature such as that traditional air quality detector utensil has is professional, unicity, triviality.Detect the following problem of bringing to IAQ (indoor air quality):
1. too specialty of legacy equipment, needs professional operating personnel carry out operation detection, and simultaneously equipment volume is huge, and in extremely inconvenience and need many people to coordinate of in-house operation, testing cost and efficiency are lower, human cost is high;
2. legacy equipment often can only detect pure gas index, and the IAQ (indoor air quality) gaseous species that regulation need to detect in GB reaches tens of kinds.Use traditional detection method to need a large amount of checkout equipments, need to detect one by one simultaneously, detection efficiency is extremely low;
Room air pollution by building, finishing material, ventilating duct pollute, human body itself is movable etc., and factor causes, causes extremely complexity of indoor air environment.Therefore detect very loaded down with trivial details to IAQ (indoor air quality).
Summary of the invention
In order to solve the problems of the prior art, the utility model provides a kind of multi-gas sensor device.
The utility model provides a kind of multi-gas sensor device, comprise power module, main circuit board, RS485 serial communication module, gas sensor module interface and integrated gas sensors pretreatment module, wherein, described integrated gas sensors pretreatment module is connected with described main circuit board by described gas sensor module interface, described power module is connected with described main circuit board, and described main circuit board is connected with described RS485 serial communication module.
As further improvement of the utility model, described integrated gas sensors pretreatment module comprises gas sensor and gas sensor signal pickup model, described gas sensor is connected with described gas sensor signal pickup model, and described gas sensor signal pickup model is connected with described gas sensor module interface.
As further improvement of the utility model, described gas sensor has two at least.
As further improvement of the utility model, described gas sensor signal pickup model comprises gas sensing resistance Rs, feedback resistance Rk, adjustable resistance R1, adjustable resistance R2 and integrated operational amplifier F, wherein, described gas sensing resistance Rs is connected with the inverting input of described integrated operational amplifier F, the in-phase input end ground connection of described integrated operational amplifier F, one end of described adjustable resistance R1 is connected with the output terminal of described integrated operational amplifier F, the other end of described adjustable resistance R1 is connected with described adjustable resistance R2, the other end ground connection of described adjustable resistance R2, one end of described feedback resistance Rk is connected with the inverting input of described integrated operational amplifier F, the other end of described feedback resistance Rk is connected to described adjustable resistance R1, between adjustable resistance R2.
As further improvement of the utility model, described gas sensor is that plug type is connected with described gas sensor signal pickup model.
The beneficial effects of the utility model are: by such scheme, can detect multiple gases by integrated gas sensors pretreatment module, detection efficiency is higher, simple to operate, small volume.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of multi-gas sensor device of the utility model;
Fig. 2 is the equivalent circuit diagram of the gas sensor signal pickup model of the integrated gas sensors pretreatment module of a kind of multi-gas sensor device of the utility model.
Embodiment
Below in conjunction with brief description of the drawings and embodiment, the utility model is further illustrated.
Drawing reference numeral in Fig. 1 to Fig. 2 is: power module 1; Main circuit board 2; RS485 serial communication module 3; Gas sensor module interface 4; Integrated gas sensors pretreatment module 5; Gas sensor 6; Gas sensor signal pickup model 7.
As shown in Figure 1, a kind of multi-gas sensor device, comprise power module 1, main circuit board 2, RS485 serial communication module 3, gas sensor module interface 4 and integrated gas sensors pretreatment module 5, wherein, described integrated gas sensors pretreatment module 5 is connected with described main circuit board 2 by described gas sensor module 4 interfaces, described power module 1 is connected with described main circuit board 2, described main circuit board 2 is connected with described RS485 serial communication module 3, power module 1 can carry 12-30VDC power supply, or external other device power supply (DPS)s.
As shown in Figure 1, described integrated gas sensors pretreatment module 5 comprises gas sensor 6 and gas sensor signal pickup model 7, described gas sensor 6 is connected with described gas sensor signal pickup model 7, and described gas sensor signal pickup model 7 is connected with described gas sensor module interface 4.
As shown in Figure 1, described gas sensor 6 has two at least, and described gas sensor 6 preferably arranges more than 10.
Integrated gas sensors pretreatment module 5 is that the signal that gas sensor 6 is collected is processed, because gas sensor 6 is to gas with various, and the response of gas variable concentrations of the same race has larger difference, therefore require system to there is larger responding range, simultaneously, to determining the A/D converting system of figure place, responding range increases, and therefore designing again gas sensor signal pickup model 7 is accurately and effectively prerequisite and the key of multi-gas sensor device.
As shown in Figure 2, described gas sensor signal pickup model 7 comprises gas sensing resistance Rs, feedback resistance Rk, adjustable resistance R1, adjustable resistance R2 and integrated operational amplifier F, wherein, described gas sensing resistance Rs is connected with the inverting input of described integrated operational amplifier F, the in-phase input end ground connection of described integrated operational amplifier F, one end of described adjustable resistance R1 is connected with the output terminal of described integrated operational amplifier F, the other end of described adjustable resistance R1 is connected with described adjustable resistance R2, the other end ground connection of described adjustable resistance R2, one end of described feedback resistance Rk is connected with the inverting input of described integrated operational amplifier F, the other end of described feedback resistance Rk is connected to described adjustable resistance R1, between adjustable resistance R2.
R1 represents the B of three ends (A, W, B) adjustable resistance, and W holds resistor, and R2 represents A, and W holds resistor.
As shown in Figure 1, described gas sensor 6 and described gas sensor signal pickup model 7 are connected for plug type.
Multi-gas sensor device utilizes single gas sensor 6 to the non-specific of gas response and the preferentially response characteristic to specific gas, according to practical application, multiple single gas sensor optimal combination is formed to gas sensor device, utilize the hyperspace gas response modes of module, in conjunction with advanced information fusion algorithm, gas is carried out to specificity and quantitatively identify.The features such as that multi-gas sensor device has is portable, real-time, on-line analysis, can be used under complex environment gas concentration discriminating and organic volatile or toxic gas and differentiate.
Gas sensor 6 has the property of plug.Multi-gas sensor device can dock with PC or notebook by stating RS485 serial communication module 3, realizes associative operation.
The advantage of a kind of multi-gas sensor device that the utility model provides is:
1. user only need to carry the checkout equipment on a small quantity with multiple sensor apparatus and can complete the detection to air quality, and checkout equipment has miniaturization, carries the features such as convenient, handled easily, reduces human cost, improves detection efficiency;
2. once can measure more than 10 kinds or 10 kinds different gas simultaneously, save the valuable time for the enforcement of Emergent detection scheme, protect to greatest extent the people's safety and area surroundings;
3. gas sensor 6 is for can plug design, and the problematic gas sensor 6 of fast changeable, maintains easily, and saves test duration and instrument cost.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (5)
1. a multi-gas sensor device, it is characterized in that: comprise power module, main circuit board, RS485 serial communication module, gas sensor module interface and integrated gas sensors pretreatment module, wherein, described integrated gas sensors pretreatment module is connected with described main circuit board by described gas sensor module interface, described power module is connected with described main circuit board, and described main circuit board is connected with described RS485 serial communication module.
2. multi-gas sensor device according to claim 1, it is characterized in that: described integrated gas sensors pretreatment module comprises gas sensor and gas sensor signal pickup model, described gas sensor is connected with described gas sensor signal pickup model, and described gas sensor signal pickup model is connected with described gas sensor module interface.
3. multi-gas sensor device according to claim 2, is characterized in that: described gas sensor has two at least.
4. multi-gas sensor device according to claim 2, it is characterized in that: described gas sensor signal pickup model comprises gas sensing resistance Rs, feedback resistance Rk, adjustable resistance R1, adjustable resistance R2 and integrated operational amplifier F, wherein, described gas sensing resistance Rs is connected with the inverting input of described integrated operational amplifier F, the in-phase input end ground connection of described integrated operational amplifier F, one end of described adjustable resistance R1 is connected with the output terminal of described integrated operational amplifier F, the other end of described adjustable resistance R1 is connected with described adjustable resistance R2, the other end ground connection of described adjustable resistance R2, one end of described feedback resistance Rk is connected with the inverting input of described integrated operational amplifier F, the other end of described feedback resistance Rk is connected to described adjustable resistance R1, between adjustable resistance R2.
5. multi-gas sensor device according to claim 2, is characterized in that: described gas sensor is that plug type is connected with described gas sensor signal pickup model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420105842.9U CN203772788U (en) | 2014-03-10 | 2014-03-10 | Multi-gas sensor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420105842.9U CN203772788U (en) | 2014-03-10 | 2014-03-10 | Multi-gas sensor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203772788U true CN203772788U (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420105842.9U Expired - Fee Related CN203772788U (en) | 2014-03-10 | 2014-03-10 | Multi-gas sensor device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203772788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455869A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | The gas sensing monitoring probe and its application of included sampling resistor |
-
2014
- 2014-03-10 CN CN201420105842.9U patent/CN203772788U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455869A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | The gas sensing monitoring probe and its application of included sampling resistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20190310 |
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| CF01 | Termination of patent right due to non-payment of annual fee |