CN105717062A - Infrared alcohol detection system - Google Patents

Infrared alcohol detection system Download PDF

Info

Publication number
CN105717062A
CN105717062A CN201610078420.0A CN201610078420A CN105717062A CN 105717062 A CN105717062 A CN 105717062A CN 201610078420 A CN201610078420 A CN 201610078420A CN 105717062 A CN105717062 A CN 105717062A
Authority
CN
China
Prior art keywords
air chamber
circuit
detection system
alcohol detection
microprocessor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610078420.0A
Other languages
Chinese (zh)
Inventor
黄克登
李江锋
黄伟铭
王海涛
孙永剑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANGZHOU JUZHILING TECHNOLOGY Co Ltd
Original Assignee
HANGZHOU JUZHILING TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HANGZHOU JUZHILING TECHNOLOGY Co Ltd filed Critical HANGZHOU JUZHILING TECHNOLOGY Co Ltd
Priority to CN201610078420.0A priority Critical patent/CN105717062A/en
Publication of CN105717062A publication Critical patent/CN105717062A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The invention discloses an infrared alcohol detection system.The infrared alcohol detection system comprises a microprocessor, a driving circuit, an infrared sensing system, an amplifying circuit and an A/D switching circuit.The microprocessor, the driving circuit, the infrared sensing system, the amplifying circuit and the A/D switching circuit are connected in sequence.The A/D switching circuit is connected with the microprocessor.The infrared sensing system is a dual-channel infrared sensing system.The infrared alcohol detection system has the advantages that due to the design of the infrared sensing system, detection data can have the high disturbance resistance; a wireless transmission module and a background terminal server are cooperated for use, on the one hand, data can be synchronously transmitted in real time, and data accumulation is effectively avoided; on the other hand, an operator can perform real-time checking; the using safety and reliability of the system are improved through a fingerprint recognizer.

Description

A kind of infrared alcohol detection system
Technical field
The present invention relates to alcohol content tester correlative technology field, refer in particular to a kind of infrared alcohol detection system.
Background technology
Alcohol content tester is primarily referred to as alcohol content of exhalation gas detector, is the detection instrument of a law enforcement designed exclusively for police, and people's police on duty can be used to how many drinking of the driver that drinks carries out concrete process, effectively reduces the generation of major traffic accidents.The alcohol content in other occasions detection characteristics of contaminated respiratory droplets gas can also be used in, it is to avoid the heavy losses of casualties and property.High-risk field can also be used in and forbid enterprise on duty after drinking, the alcohol content tester of enterprise is also non-portable, but wall-mounted alcohol content tester, wall-mounted easy to use compared with having portable, detection speed is accelerated, the benefit that precision is high, wall-mounted in order to be more suitable for enterprises and institutions' use, increase a series of functions such as work attendance, audio alert of swiping the card.
At present, China is in the detection method of some alcohol gas, although the sensing unit sensitivity of employing is significantly high, but owing to being subject to the interference of background gas, the accuracy of analysis is poor;It addition, more existing alcohol gas test equipment, bulky, complicated operation, interface roughness, lack hommization and intellectuality.And existing alcohol content tester, while storage data, often when storage to certain numerical value, it is necessary to manually it being carried out data process, namely uploading data processes, it is impossible to carry out simultaneously operating with timely data.
Summary of the invention
There is above-mentioned deficiency to overcome in the present invention, it is provided that the infrared alcohol detection system that a kind of anti-interference is good in prior art.
To achieve these goals, the present invention is by the following technical solutions:
A kind of infrared alcohol detection system, including microprocessor, drive circuit, infra-red sensing system, amplifying circuit and A/D change-over circuit, described microprocessor, drive circuit, infra-red sensing system, amplifying circuit and A/D change-over circuit are sequentially connected with, described A/D change-over circuit is connected with microprocessor, and described infra-red sensing system is dual pathways infra-red sensing system.
In the present invention, microprocessor controls the modulation signal of drive circuit transmission certain frequency and goes to control infra-red sensing system, due to the dual pathways infra-red sensing system that infra-red sensing system adopts, one of them passage is tested gas passage, and another is reference channel, it is mainly environmental Kuznets Curves passage, by twin-channel contrast design, it is possible to increase the sensitivity of this system and reliability;The small-signal exported by infra-red sensing system, through high-accuracy amplifying circuit, obtains stable signal;Signal is changed through A/D, delivers to microprocessor processes, and the alcohol concentration calculated draws whether drunk driving conclusion, and so design effectively raises the anti-interference of this system.
As preferably, described infra-red sensing system includes supporting housing, light source, air chamber, filter set and detector set, described air chamber is arranged on the center supporting housing, described air chamber removably connects with supporting housing, described light source is placed in one end of air chamber, described filter set is placed in the other end of air chamber, described detector set is placed in filter set, described air chamber is dual pathways air chamber and symmetrical distribution, it is equipped with air inlet and gas outlet in each passage of described air chamber, described drive circuit connects light source, described detector set connects amplifying circuit.This is designed with air chamber and supports the structure that housing separates, and air chamber only need to be fixedly mounted on during installation the center supporting housing, and the supporting construction at two ends facilitates the installation of light source and detector set;This kind of structural design ensure that air chamber is prone to handling, changes, and the air chamber in the middle of changing is without the supporting construction at conversion two ends;Simultaneously because separate with supporting housing, further reduce the impact of external condition, make infra-red sensing system adapt to work under complex environment.
As preferably, described air chamber is provided with one end of light source and is additionally provided with reflecting mirror, and described mirror shapes is parabolic shape, and described light source is placed in the focal point of reflecting mirror.In order to better utilize the emergent light energy of infrared light supply, at the parabolic mirror added behind of light source, light source is arranged on paraboloidal focal point, thus improving the exiting parallel energy of light source.
As preferably, described air chamber adopts cylindrical structural, and the dual pathways inwall of described air chamber all adopts polishing or coating process.Middle air chamber adopts cylindrical structural, and in order to reduce light loss in transmitting procedure, the inwall of air chamber to have enough fineness, it is possible to is realized by the polishing of inwall or plated film.
As preferably, described filter set includes two optical filters, and described detector set includes two detectors, the corresponding optical filter of each passage in described air chamber and a detector, described detector is thermopile detector, and described thermopile detector is in series by some thermocouples.So it is designed to improve detector and infra-red radiation is produced the phase response of variations in temperature, owing to many thermocouple probe are connected, the thermoelectrical potential of each output is formed by stacking, and therefore thermoelectrical potential produced by thermopile detector is far longer than common thermocouple probe;This design is exactly the ultimate principle according to thermocouple temperature measurement, thermopile detector for infrared light detecting goes out to add the area of light receiving surface at probe node, and significantly more efficient absorption infrared light, due to the heat effect of infrared light, the temperature making light receiving surface raises, thus producing thermoelectrical potential.
As preferably, described drive circuit is constant-current source impulse modulation drive circuit, is provided with current foldback circuit in described drive circuit.Ensure the stability that light source exports, use constant-current source to drive;Characteristic according to light source, carries out modulation to light source, thus the structure of simplified system, improves the stability of system;For ensureing infrared light supply service life, take suitable overcurrent protection.
As preferably, described amplifying circuit includes pre-amplification circuit and filter amplification circuit, and described infra-red sensing system connects pre-amplification circuit, and described pre-amplification circuit connects filter amplification circuit, and described filter amplification circuit connects A/D change-over circuit.The voltage signal of detector output is very faint, so the amplifying circuit of high-precision high-amplification-factor must be designed;In the process of circuit design, filtering and the anti-interference process of signal to be considered;Owing to surveyed object is originally as faint amount, restriction by various different sensors sensitivity, obtained signal is fainter, generally cannot be directly used to sampling processing, so in the circuit design of signal detection, general signal is required for the preposition amplification through one or more levels, due to the noise that preposition amplification brings, by selecting the filter amplification circuit of superior performance to make influence of noise minimum.
As preferably, also including display, described display connects microprocessor.By the design of display, it is possible to display alcohol concentration value directly perceived, for the drunk degree judging detected personnel.
As preferably, also including wireless transport module and background terminal server, described wireless transport module is connected with microprocessor, and described background terminal server is connected with wireless transport module.By wireless transport module and background terminal server with the use of, it is possible to real-time uploads detection data, it is prevented that artificial destruction detection data, improves reliability for detection.
As preferably, also including Fingerprint Identification Unit, described Fingerprint Identification Unit is connected with microprocessor.The safety and reliability of this system are guaranteed, it is prevented that detection data are modified by unauthorized people by Fingerprint Identification Unit;The finger print information of the detected personnel of all right typing simultaneously, it is prevented that top bag situation occur in detected personnel, to improve the detection precision of this system.
The invention has the beneficial effects as follows: by the design of infra-red sensing system, it is possible to make detection data have high anti-interference;And wireless transport module and background terminal server with the use of, enable to the transmission of real time data synchronization on the one hand, be effectively prevented overstocking of data, operator can also be carried out real-time examination on the other hand;Improve the safety and reliability of this system by Fingerprint Identification Unit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
In figure: 1. microprocessor, 2. drive circuit, 3. infra-red sensing system, 4. pre-amplification circuit, 5. filter amplification circuit, 6.A/D change-over circuit, 7. display, 8. wireless transport module, 9. light source, 10. reflecting mirror, 11. air chamber, 12. filter set, 13. detector set, 14. air inlets, 15. gas outlets.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
In embodiment as described in Figure 1, a kind of infrared alcohol detection system, including microprocessor 1, drive circuit 2, infra-red sensing system 3, amplifying circuit and A/D change-over circuit 6, microprocessor 1, drive circuit 2, infra-red sensing system 3, amplifying circuit and A/D change-over circuit 6 are sequentially connected with, A/D change-over circuit 6 is connected with microprocessor 1, and infra-red sensing system 3 is dual pathways infra-red sensing system.
Infra-red sensing system 3 includes supporting housing, light source 9, air chamber 11, filter set 12 and detector set 13, air chamber 11 is arranged on the center supporting housing, air chamber 11 removably connects with supporting housing, light source 9 is placed in one end of air chamber 11, filter set 12 is placed in the other end of air chamber 11, detector set 13 is placed in filter set 12, air chamber 11 is dual pathways air chamber and symmetrical distribution, air inlet 14 and gas outlet 15 it is equipped with in each passage of air chamber 11, drive circuit 2 connects light source 9, and detector set 13 connects amplifying circuit.Air chamber 11 is provided with one end of light source 9 and is additionally provided with reflecting mirror 10, and reflecting mirror 10 shape is parabolic shape, and light source 9 is placed in the focal point of reflecting mirror 10.Air chamber 11 adopts cylindrical structural, and the dual pathways inwall of air chamber 11 all adopts polishing or coating process.Filter set 12 includes two optical filters, and detector set 13 includes two detectors, the corresponding optical filter of each passage in air chamber 11 and a detector, and detector is thermopile detector, and thermopile detector is in series by some thermocouples.
Drive circuit 2 is constant-current source impulse modulation drive circuit, is provided with current foldback circuit in drive circuit 2.Amplifying circuit includes pre-amplification circuit 4 and filter amplification circuit 5, and infra-red sensing system 3 connects pre-amplification circuit 4, and pre-amplification circuit 4 connects filter amplification circuit 5, and filter amplification circuit 5 connects A/D change-over circuit 6.Also including display 7, Fingerprint Identification Unit, wireless transport module 8 and background terminal server, described display 7, Fingerprint Identification Unit and wireless transport module 8 are connected with microprocessor 1, and background terminal server is connected with wireless transport module 8.
In the present invention, microprocessor 1 controls drive circuit 2 and sends the modulation signal of certain frequency and go to control infrared light supply 9;Infrared light by infrared light supply 9 outgoing, one tunnel is through being filled with the air chamber 11 of gas to be measured, infrared light is through the absorption of the air chamber 11 of certain length, and the selectivity through optical filter passes through, and finally arrives detector, another road process and the tested gas air chamber 11 without direct relation, infrared light is through the absorption of the air chamber 11 of equal length, and the selectivity through optical filter passes through, and finally arrives detector, detector records the intensity of the light energy after absorption, reflects the power of GAS ABSORPTION infrared light;The small-signal exported by detector, through the filter amplification circuit 5 of high-accuracy pre-amplification circuit 4 and two grades, obtains stable signal;Signal, through A/D change-over circuit 6, is delivered to microprocessor 1 and is processed, and the alcohol concentration calculated shows on the display 7.Wireless transport module 8 and background terminal server is also included due to this system, alcohol concentration information for calculating is sent to background terminal server by wireless transport module 8 and can understand the information of detected personnel timely, and data are stored, on the one hand can be real-time send the data to background terminal server, can conveniently operator be examined on the other hand.The safety and reliability of this system are guaranteed, it is prevented that the data of detection in this system are modified by unauthorized people by Fingerprint Identification Unit;The finger print information of the detected personnel of all right typing simultaneously, it is prevented that top bag situation occur in detected personnel, to improve the detection precision of this system.

Claims (10)

1. one kind infrared alcohol detection system, including microprocessor (1), drive circuit (2), infra-red sensing system (3), amplifying circuit and A/D change-over circuit (6), described microprocessor (1), drive circuit (2), infra-red sensing system (3), amplifying circuit and A/D change-over circuit (6) are sequentially connected with, described A/D change-over circuit (6) is connected with microprocessor (1), and described infra-red sensing system (3) is dual pathways infra-red sensing system.
2. the infrared alcohol detection system of one according to claim 1, it is characterized in that, described infra-red sensing system (3) includes supporting housing, light source (9), air chamber (11), filter set (12) and detector set (13), described air chamber (11) is arranged on the center supporting housing, described air chamber (11) removably connects with supporting housing, described light source (9) is placed in one end of air chamber (11), described filter set (12) is placed in the other end of air chamber (11), described detector set (13) is placed in filter set (12), described air chamber (11) is dual pathways air chamber and symmetrical distribution, air inlet (14) and gas outlet (15) it is equipped with in each passage of described air chamber (11), described drive circuit (2) connects light source (9), described detector set (13) connects amplifying circuit.
3. the infrared alcohol detection system of one according to claim 2, it is characterized in that, described air chamber (11) is provided with one end of light source (9) and is additionally provided with reflecting mirror (10), described reflecting mirror (10) shape is parabolic shape, and described light source (9) is placed in the focal point of reflecting mirror (10).
4. the infrared alcohol detection system of one according to Claims 2 or 3, is characterized in that, described air chamber (11) adopts cylindrical structural, and the dual pathways inwall of described air chamber (11) all adopts polishing or coating process.
5. the infrared alcohol detection system of one according to claim 2, it is characterized in that, described filter set (12) includes two optical filters, described detector set (13) includes two detectors, the corresponding optical filter of each passage in described air chamber (11) and a detector, described detector is thermopile detector, and described thermopile detector is in series by some thermocouples.
6. the infrared alcohol detection system of one according to claim 1, is characterized in that, described drive circuit (2) is constant-current source impulse modulation drive circuit, is provided with current foldback circuit in described drive circuit (2).
7. the infrared alcohol detection system of one according to claim 1, it is characterized in that, described amplifying circuit includes pre-amplification circuit (4) and filter amplification circuit (5), described infra-red sensing system (3) connects pre-amplification circuit (4), described pre-amplification circuit (4) connects filter amplification circuit (5), and described filter amplification circuit (5) connects A/D change-over circuit (6).
8. the infrared alcohol detection system of one according to claim 1, is characterized in that, also includes display (7), and described display (7) connects microprocessor (1).
9. the infrared alcohol detection system of one according to claim 1, it is characterized in that, also include wireless transport module (8) and background terminal server, described wireless transport module (8) is connected with microprocessor (1), and described background terminal server is connected with wireless transport module (8).
10. the infrared alcohol detection system of one according to claim 1, is characterized in that, also includes Fingerprint Identification Unit, and described Fingerprint Identification Unit is connected with microprocessor (1).
CN201610078420.0A 2016-02-04 2016-02-04 Infrared alcohol detection system Pending CN105717062A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610078420.0A CN105717062A (en) 2016-02-04 2016-02-04 Infrared alcohol detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610078420.0A CN105717062A (en) 2016-02-04 2016-02-04 Infrared alcohol detection system

Publications (1)

Publication Number Publication Date
CN105717062A true CN105717062A (en) 2016-06-29

Family

ID=56156549

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610078420.0A Pending CN105717062A (en) 2016-02-04 2016-02-04 Infrared alcohol detection system

Country Status (1)

Country Link
CN (1) CN105717062A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105372199A (en) * 2015-11-19 2016-03-02 重庆高略联信智能技术有限公司 Infrared diffuse reflection-based drunk driving telemetering system and telemetering method
CN107328738A (en) * 2017-06-28 2017-11-07 武汉米字能源科技有限公司 The double air chamber trace gas analysis systems of one kind series connection and gas concentration calculate method
CN108254542A (en) * 2017-12-14 2018-07-06 吴志华 A kind of cloud storage cloud identification intelligent alcohol detection system with communication module

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0633471A1 (en) * 1993-07-09 1995-01-11 Cmi, Inc. Infrared breath analyzer with calibration provisions and related method
CN101477043A (en) * 2009-01-05 2009-07-08 浙江理工大学 Infrared spirit test method and system with curve drafting function
CN101726468A (en) * 2009-12-11 2010-06-09 宇星科技发展(深圳)有限公司 Nox analyzer
CN104228579A (en) * 2014-09-05 2014-12-24 上海应用技术学院 Drunk driving vehicle door remote controller capable of realizing wireless communication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0633471A1 (en) * 1993-07-09 1995-01-11 Cmi, Inc. Infrared breath analyzer with calibration provisions and related method
CN101477043A (en) * 2009-01-05 2009-07-08 浙江理工大学 Infrared spirit test method and system with curve drafting function
CN101726468A (en) * 2009-12-11 2010-06-09 宇星科技发展(深圳)有限公司 Nox analyzer
CN104228579A (en) * 2014-09-05 2014-12-24 上海应用技术学院 Drunk driving vehicle door remote controller capable of realizing wireless communication

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
白亚梅: "《传感器技术及应用》", 31 January 2016, 哈尔滨工程大学出版社 *
石来德等: "《机械量测与分析》", 31 December 2011, 上海科学技术出版社 *
袁继俊等: "《中国红外产品与应用》", 31 October 2004, 长城出版社 *
谭秋林: "《红外光学气体传感器及检测系统》", 31 December 2013, 机械工业出版社 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105372199A (en) * 2015-11-19 2016-03-02 重庆高略联信智能技术有限公司 Infrared diffuse reflection-based drunk driving telemetering system and telemetering method
CN105372199B (en) * 2015-11-19 2019-02-26 重庆高略联信智能技术有限公司 One kind being based on infrared irreflexive drunk driving telemetry system and the method for telemetering
CN107328738A (en) * 2017-06-28 2017-11-07 武汉米字能源科技有限公司 The double air chamber trace gas analysis systems of one kind series connection and gas concentration calculate method
CN107328738B (en) * 2017-06-28 2019-05-28 武汉米字能源科技有限公司 A kind of double gas chamber trace gas analysis systems and gas concentration calculating method of connecting
CN108254542A (en) * 2017-12-14 2018-07-06 吴志华 A kind of cloud storage cloud identification intelligent alcohol detection system with communication module

Similar Documents

Publication Publication Date Title
CN111707634B (en) Multichannel gas concentration detection system and method based on mid-infrared absorption spectrum
CN101281125B (en) Method and apparatus for monitoring intelligent infrared multi-component harmful gas
CN2874476Y (en) Terahertz time domain spectral instrument based on optical rectification
CN101936896B (en) Alcohol gas concentration laser telemetering device
CN104280362B (en) A kind of superheated vapor laser spectrum on-line detecting system
CN202886278U (en) Laser gas remote telemetering device with visible image positioning and recording function
CN204556499U (en) The multi-channel high-speed data acquisition and processing system of tuning diode absorption spectrum
CN102253012B (en) Device and method for measuring extinction coefficient of black carbon aerosol
CN102297856A (en) Raman spectrum detecting system and method for automatically calibrating Raman spectrum detecting system
CN201819884U (en) Raman spectrum detection system
CN105717064A (en) Expiration alcohol tester and alcohol testing method
Liu et al. Collaborative bicycle sensing for air pollution on roadway
CN103712914A (en) Laser cavity ring-down spectrometer for simultaneous detection of aerosol extinction and scattering coefficients
CN105717062A (en) Infrared alcohol detection system
CN105510266A (en) Harmful gas monitoring system based on infrared absorption spectrum
CN101608998A (en) Multiparameter water quality quick detection device based on the ARM technology
CN106908407A (en) A kind of pendular reflex scan-type multi-component material NDIR detection means
CN112782118B (en) Multichannel methane leakage optical telemetry device and measurement method
KR20200058318A (en) Multimodal dust sensor
CN105699296A (en) Alcohol detecting instrument and alcohol detecting method
CN102288574A (en) Device and method for quantitatively analyzing concentration of multi-component oil fume
CN102608095A (en) Method for automatically calibrating Raman spectrum detection system by utilizing standard sample
CN107860749A (en) Based on CO2The portable SF of laser6Leak remote sensing instrument
CN109239002A (en) A kind of Tail gas measuring device
CN205562378U (en) Infrared alcohol detection mechanism

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20160629

RJ01 Rejection of invention patent application after publication