CN2935157Y - Gas collection apparatus of alcohol detector - Google Patents
Gas collection apparatus of alcohol detector Download PDFInfo
- Publication number
- CN2935157Y CN2935157Y CN 200620122910 CN200620122910U CN2935157Y CN 2935157 Y CN2935157 Y CN 2935157Y CN 200620122910 CN200620122910 CN 200620122910 CN 200620122910 U CN200620122910 U CN 200620122910U CN 2935157 Y CN2935157 Y CN 2935157Y
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- Prior art keywords
- gas
- air bag
- conduit
- electromagnet
- alcohol detector
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Abstract
The utility model relates to the gas detecting equipment field, in particular to a gas collection device for alcohol detection. The utility model is provided with an airtight gas-sensitive cavity in the housing, at least two tubes, a ballonet, a push-pull means. The push-pull means controls the ballonet swelling or extension, and leads the testing gas in the blowtorch to the gas-sensitive cavity through the tube connecting with the ballonet. The testing gas is leaded indirectly into the gas-sensitive cavity to be detected, thereby avoiding the damage and the temperature influence on the gas-sensitive transducer caused by the direct exhalant gas, prolonging the useful time of the alcohol detection, improving the measurement accuracy. At the same time, because of the certain cubage of the ballonet, the sample testing gas cubage is certain, ulteriorly improving the measurement accuracy, and ensuring the consistency of the many detecting standard.
Description
Technical field
The utility model relates to the gas detection equipment field, is a kind of alcohol detector gas collecting device specifically.
Technical background
The alcohol detector of promoting the use of in the traffic control department can be realized the tested personnel situation of drinking is detected by alcohol gas content in the sampling human body respiration now, provides strong foundation because of it is easy to use to government department's law enforcement.But the alcohol detector that extensively adopts is to adopt directly to send into the gas that tested personnel breathe out in the gas sensor by blowpipe mostly at present, realize the collection and the detection of gas concentration, yet the pressure of the direct breath of time that different tested personnel or same people are different, flow, temperature are inconsistent often, because gas sensor generally is the element of comparison sensitivity, the pressure of gas, flow, temperature influence bigger to sensor output signal in actual applications.The accuracy that improves measurement result need be improved the sample mode of breath.
The utility model content
The utility model has overcome above-mentioned shortcoming, and a kind of alcohol detector gas collecting device that can quantitative collection gas is provided.
The technical scheme in the invention for solving the technical problem is: a kind of alcohol detector gas collecting device, comprise a housing and be arranged on the outer blowpipe of housing, also be provided with an airtight air-sensitive chamber in the described housing, at least two conduits, an air bag and a push-pull device at fixed, described gas sensor is arranged in the described air-sensitive chamber, wherein an end of first conduit is connected with described blowpipe, the other end is connected in the described air-sensitive chamber, one end of second conduit also is connected in the described air-sensitive chamber, the other end connects and links to each other with described air bag, described push-pull device at fixed links to each other with described air bag, and the described air bag of push-and-pull is done compression and extensional motion.
Also can comprise the 3rd conduit and a gas pressure sensor in the described housing, an end of described the 3rd conduit also is connected with described blowpipe, and the other end is connected in the described gas pressure sensor, and described pressure transducer is controlled described push-pull device at fixed work.
Described push-pull device at fixed can comprise an electromagnet, and described magnet spool is fixed on a side of described air bag, and the iron core of electromagnet is fixedlyed connected with described air bag.
The outlet that described blowpipe links to each other with conduit, and can be acute angle or right angle between the blowpipe.
Also can comprise one by lead and the driving circuit that described gas pressure sensor and electromagnet link to each other respectively, be used to receive the electric signal that described gas pressure sensor sends and drive described electromagnet action.
Also can be provided with a pressure spring on the described electromagnet core, an end roof pressure of described pressure spring is at the shell of electromagnet, and other end roof pressure is on air bag.
Described air bag can form the confining gas cavity by two relative pressing plates and the flexible telescopic tube that is connected between described two pressing plates, and one of them pressing plate is connected with described second conduit, and another pressing plate is connected with described electromagnet core.
The utility model is provided with an airtight air-sensitive chamber in housing, at least two conduits, an air bag and a push-pull device at fixed, by and expand or flexible by push-pull device at fixed control air bag, and the described again conduit that links to each other with air bag imports the tested gas in the blowpipe in the air-sensitive chamber, thereby making tested gas be admitted to described air-sensitive chamber with indirect mode detects, avoided the pressure of the gas of direct exhalation, flow, the influence that temperature causes gas sensor, prolonged the serviceable life of alcohol screen test device, improved measuring accuracy, simultaneously, because the volume of described air bag is certain, also make the air-flow of tested gas comparatively add steadily, further improve the precision of testing result, and guaranteed the repeated detection conformance to standard.
Description of drawings
Fig. 1 is the utility model inner structure synoptic diagram
Embodiment
As shown in Figure 1, a blowpipe 1 is fixedly installed on housing 2 outsides, the housing internal fixation is provided with air-sensitive chamber 3, electromagnet 4, air bag 5 and gas pressure sensor 6, described air-sensitive is provided with gas sensor in the chamber, the same side of described blowpipe outer wall is provided with two outlets 7 vertical with described blowpipe, respectively be connected with a conduit 8 in two outlets 7,9 also originally are not connected in the air-sensitive chamber 3 and gas pressure sensor 6 of described enclosure interior, the other end in described air-sensitive chamber also is connected in the described air bag by conduit 10, described air bag 5 is by two relative pressing plates 11,12 and the flexible telescopic tube 13 that is connected between described two pressing plates form the confining gas cavitys, one of them pressing plate 12 connects with the conduit 10 that is connected described air-sensitive chamber 3, and another pressing plate is connected with described electromagnet 4 iron cores.The output of described gas pressure sensor 6 is connected with a driving circuit (not indicating among the figure), described driving circuit links to each other with the coil of electromagnet 4 again, being used to control described coil gets, the iron core action, also be connected with pressure 14 springs between the shell of described electromagnet and the pressing plate of described air bag, and be sleeved on described electromagnet 4 iron cores.
Based on said structure, the course of work of the present utility model is as follows, when tested personnel in described blowpipe during incoming call gas, a part of gas is wherein sent in the described gas pressure sensor through conduit 9, can detect and control the opportunity of extracting gases automatically by described gas pressure sensor, when the pressure that detects gas reaches designated value, send electric signal, because described electric signal is comparatively faint usually or output impedance is less, just obtain output current or magnitude of voltage higher signal and drive described magnet coil getting by described driving circuit detection and after handling, (described driving circuit is the custom circuit that small-signal is converted to large-signal, those skilled in the art can design arbitrarily as required, here repeat no more) make described magnet coil produce magnetic field, make iron core indentation in coil, spurring described air bag expands, thereby from the air-sensitive chamber, extract quantitative gas by described conduit 10, because described air-sensitive chamber is airtight cavity, at described conduit 10 from the air-sensitive chamber in the extracting gases, described conduit 8 extracts the gas that tested personnel breathe out from described blowpipe, and be sent in the described air-sensitive chamber, by the alcohol concentration in the gas sensor detected gas in the described air-sensitive chamber, and send corresponding electric signal, realize tested personnel are drunk situation from accurate detection.Detect after the end, no longer including gas in the blowpipe is blown into, described gas pressure sensor perception is less than pressure output signal or send stop signal not then, disconnect by described driving circuit control electromagnet dead electricity again, under the effect of described pressure spring, air bag is returned to compressive state again, and the residual gas in conduit 10 and the sensor is discharged, and can test subsequently next time.In addition, described driving circuit can comprise microcontrollers such as MCU, by the detected signal of described gas pressure sensor, can be input in the described microcontroller, drives described magnet coil work through output control signal after the logical process of described microcontroller.
In the utility model, by conduit gas is sent into described air-sensitive chamber indirectly and detect, damage and the temperature effect of having avoided the gas of direct exhalation that gas sensor is caused.Prolonged the alcohol screen test device serviceable life, improved measuring accuracy, simultaneously,, also make the air-flow of tested gas comparatively add steadily because the volume of described air bag is certain, further improved the precision of testing result, and assurance repeated detection conformance to standard.
More than alcohol detector gas collecting device provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (7)
1. alcohol detector gas collecting device, comprise a housing and be arranged on the outer blowpipe of housing, be provided with a gas sensor in the described housing, it is characterized in that: also be provided with an airtight air-sensitive chamber in the described housing, at least two conduits, an air bag and a push-pull device at fixed, described gas sensor is arranged in the described air-sensitive chamber, wherein an end of first conduit is connected with described blowpipe, the other end is connected in the described air-sensitive chamber, one end of second conduit also is connected in the described air-sensitive chamber, the other end connects and links to each other with described air bag, described push-pull device at fixed links to each other with described air bag, and the described air bag of push-and-pull is done compression and extensional motion.
2. alcohol detector gas collecting device according to claim 1, it is characterized in that: also comprise the 3rd conduit and a gas pressure sensor in the described housing, one end of described the 3rd conduit also is connected with described blowpipe, the other end is connected in the described gas pressure sensor, and described pressure transducer is controlled described push-pull device at fixed work.
3. alcohol detector gas collecting device according to claim 1 and 2 is characterized in that: described push-pull device at fixed comprises an electromagnet, and described magnet spool is fixed on a side of described air bag, and the iron core of electromagnet is fixedlyed connected with described air bag.
4. alcohol detector gas collecting device according to claim 1 and 2 is characterized in that: the outlet that described blowpipe links to each other with conduit, and be acute angle or right angle between the blowpipe.
5. alcohol detector gas collecting device according to claim 2, it is characterized in that: also comprise one by lead and the driving circuit that described gas pressure sensor and electromagnet link to each other respectively, be used to receive the electric signal that described gas pressure sensor sends and drive described electromagnet action.
6. alcohol detector gas collecting device according to claim 3 is characterized in that: also be provided with a pressure spring on the described electromagnet core, an end roof pressure of described pressure spring is at the shell of electromagnet, and other end roof pressure is on air bag.
7. alcohol detector gas collecting device according to claim 3, it is characterized in that: described air bag forms the confining gas cavity by two relative pressing plates and the flexible telescopic tube that is connected between described two pressing plates, one of them pressing plate is connected with described second conduit, and another pressing plate is connected with described electromagnet core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620122910 CN2935157Y (en) | 2006-07-27 | 2006-07-27 | Gas collection apparatus of alcohol detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620122910 CN2935157Y (en) | 2006-07-27 | 2006-07-27 | Gas collection apparatus of alcohol detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2935157Y true CN2935157Y (en) | 2007-08-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620122910 Expired - Fee Related CN2935157Y (en) | 2006-07-27 | 2006-07-27 | Gas collection apparatus of alcohol detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2935157Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749415A (en) * | 2011-04-21 | 2012-10-24 | 香港理工大学 | Expired air analysis device and method |
| CN103344775A (en) * | 2013-06-28 | 2013-10-09 | 项泽玉 | Exhaled gas voltage stabilization detection air cavity |
| CN103344671A (en) * | 2013-06-28 | 2013-10-09 | 项泽玉 | High-precision semiconductor exhaled gas alcohol concentration detection module |
| CN105092644A (en) * | 2015-07-30 | 2015-11-25 | 武汉飞恩微电子有限公司 | Gas blowing channel structure of alcohol concentration sensor |
| CN105527330A (en) * | 2016-01-13 | 2016-04-27 | 邢皓宇 | Alcohol tester |
| CN107843691A (en) * | 2017-10-19 | 2018-03-27 | 广东美的制冷设备有限公司 | The control method of formaldehyde sensor module |
| CN110286201A (en) * | 2019-07-24 | 2019-09-27 | 中国环境科学研究院 | Air detection instrument |
| CN112033488A (en) * | 2020-08-19 | 2020-12-04 | 重庆市山城燃气设备有限公司 | Natural gas meter with composite adjusting function and control method thereof |
| CN113358520A (en) * | 2021-06-03 | 2021-09-07 | 吉林大学 | Oxygen content measuring device of children breathing and oxygen supply equipment |
-
2006
- 2006-07-27 CN CN 200620122910 patent/CN2935157Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749415A (en) * | 2011-04-21 | 2012-10-24 | 香港理工大学 | Expired air analysis device and method |
| CN103344775A (en) * | 2013-06-28 | 2013-10-09 | 项泽玉 | Exhaled gas voltage stabilization detection air cavity |
| CN103344671A (en) * | 2013-06-28 | 2013-10-09 | 项泽玉 | High-precision semiconductor exhaled gas alcohol concentration detection module |
| CN105092644A (en) * | 2015-07-30 | 2015-11-25 | 武汉飞恩微电子有限公司 | Gas blowing channel structure of alcohol concentration sensor |
| CN105527330A (en) * | 2016-01-13 | 2016-04-27 | 邢皓宇 | Alcohol tester |
| CN107843691A (en) * | 2017-10-19 | 2018-03-27 | 广东美的制冷设备有限公司 | The control method of formaldehyde sensor module |
| CN110286201A (en) * | 2019-07-24 | 2019-09-27 | 中国环境科学研究院 | Air detection instrument |
| CN110286201B (en) * | 2019-07-24 | 2020-03-13 | 中国环境科学研究院 | Air detector |
| CN112033488A (en) * | 2020-08-19 | 2020-12-04 | 重庆市山城燃气设备有限公司 | Natural gas meter with composite adjusting function and control method thereof |
| CN113358520A (en) * | 2021-06-03 | 2021-09-07 | 吉林大学 | Oxygen content measuring device of children breathing and oxygen supply equipment |
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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 | ||
| CP03 | Change of name, title or address |
Address after: No. 169, Cedar Road, Zhengzhou hi tech Development Zone, Henan, Zhengzhou: 450000 Patentee after: Henan Hanwei Electronics Co., Ltd. Address before: No. 169, Cedar Road, Zhengzhou hi tech Development Zone, Henan, Zhengzhou: 450000 Patentee before: Henan Hanwei Electronics Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070815 Termination date: 20130727 |