CN108918461A - A kind of drunk driving remote detecting method and system - Google Patents
A kind of drunk driving remote detecting method and system Download PDFInfo
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- CN108918461A CN108918461A CN201810268180.XA CN201810268180A CN108918461A CN 108918461 A CN108918461 A CN 108918461A CN 201810268180 A CN201810268180 A CN 201810268180A CN 108918461 A CN108918461 A CN 108918461A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
Abstract
The present invention provides a kind of drunk driving remote detecting method and systems, belong to remote sensing monitoring technical field.The method includes：When drunk driving remote sensing event occurs, transmitting terminal sends first laser signal, second laser signal and third laser signal to vehicle to be detected, wherein, the wavelength of the first laser signal is the corresponding wavelength of the first absorption peak of alcohol gas and the first laser signal is not absorbed by glass for vehicle window, the second laser signal is not absorbed by alcohol gas, and the wavelength of the third laser signal is the corresponding wavelength of the second absorption peak of alcohol gas and the third laser is absorbed by the glass for vehicle window；Receiving end receives first laser signal, second laser signal and third laser signal after the vehicle to be detected, and judges whether there is drunk driving and the escape inspection that whether opens a window according to three signals received.This method avoid missing inspection caused by interior alcohol concentration is reduced as windowing, the accuracy rate of drunk driving remote sensing is improved.
Description
Technical field
The present invention relates to one kind can identify vehicle opened a window inspection drunk driving remote detecting method and system, belong to remote sensing prison
Survey technology field.
Background technique
In recent years, China's automobile quantity increases sharply, the following road traffic accident is also increasing, gives the people
Life brings huge Loss of Life and property, wherein driving when intoxicated is the one of the major reasons for causing traffic accident to occur.
It being threatened for reply drunk driving bring sternness traffic safety, criminal law is written in drunk driving by public safety traffic management department, even if but
In this way, drinking drive behavior still effectively controls.For the coverage rate for improving drunk driving inspection, public safety traffic management department can only increase
Police strength and material resources, expansion period and location are checked, but due to depending on traditional contact measurement means, can not be long-range
Judge whether driver drinks, vehicle can only be checked one by one, not only low efficiency but also has an effect on normal traffic in this way.Cause
This, how effectively to investigate and prosecute drunk driving by technological means becomes one of the focus of maintenance social public security.
Traditional drunk driving monitors such as blood alcohol detection, expiration formula alcohol content tester are contact measurement mostly, that is, are needed
Driver is wanted actively to blow or with skin contact detecting instrument in somewhere on the bodies such as hand, arm, foot, be not suitable for remotely examining
It surveys.Not only seriously affecting road traffic normal pass in practical applications reduces road efficiency, and time-consuming, detection effect
Rate is low, while this kind of detection method can only take selective examination, and detection coverage rate is limited, and omission factor height also expends a large amount of manpower object
Power.
Currently, the drunk driving remote sensing remote detection device applied includes 201110182035.8,201110182030.5
With 201110452350.8,201110453189.6 etc., these devices are all made of optical non-contact remote mode and carry out alcohol
Detection can utilize the characteristic absorpting spectruming line of alcohol molecule to a certain extent to avoid the defect of traditional detection method, these methods
Realize the detection of the alcohol gas content breathed out to suspicious drunk driving person.But due to being measured using Single wavelength, it is single that there are spectral coverages,
The interference of other absorption gases on path can not be eliminated, different material molecule discrimination is poor, so that there is mirror in real-time monitoring
The big disadvantage of other error.
Patent (2017103250017) in application uses double UV check method, although improving interior alcohol gas
Body detection accuracy, but can face the problem of whether vehicle opens a window can not be judged in practical applications.When driver passes through drunk driving
When test point, if deliberately reducing interior alcohol concentration by windowing to escape drunk driving remote sensing detection, missing inspection will form.
Summary of the invention
Present invention solves the technical problem that being：Overcome the deficiencies of the prior art and provide a kind of drunk driving remote detecting method and
System avoids the missing inspection as caused by windowing reduction interior alcohol concentration, improves the accuracy rate of drunk driving remote sensing.
For achieving the above object, the present invention provides the following technical solutions：
A kind of drunk driving remote detecting method, including：
When drunk driving remote sensing event occurs, transmitting terminal sends first laser signal, second laser to vehicle to be detected
Signal and third laser signal, wherein the wavelength of the first laser signal is the corresponding wave of the first absorption peak of alcohol gas
The long and described first laser signal is not absorbed by glass for vehicle window, and the second laser signal is not absorbed by alcohol gas, and described
The wavelength of three laser signals be alcohol gas the corresponding wavelength of the second absorption peak and the third laser by the glass for vehicle window
It absorbs；
Receiving end receives the first laser signal after the vehicle to be detected, second laser signal and third laser letter
Number, and drunk driving is judged whether there is and the escape inspection that whether opens a window according to three signals received.
In an alternative embodiment, whether three signals that the basis receives judge whether there is drunk driving and open a window
It escapes and checks, including：
The first alcohol gas concentration is determined according to the first laser signal and second laser signal that receive；
The second alcohol gas concentration is determined according to the second laser signal and third laser signal that receive；
Drunk driving is judged whether there is according to first alcohol gas concentration and the second alcohol gas concentration and whether is opened
Window, which is escaped, to be checked.
In an alternative embodiment, the receiving end determines the first alcohol gas concentration according to formula (1)：
The second alcohol gas concentration is determined according to formula (2)：
Wherein, C is the first alcohol gas concentration, and C' is the second alcohol gas concentration, P1_tFor described in transmitting terminal transmission
Transmission power when first laser signal, P2_tThe transmission power when second laser signal, P are sent for the transmitting terminal3_t
The transmission power when third laser signal, P are sent for the transmitting terminal1_rThe first laser is received for the receiving end
Reception power when signal, P2_rThe reception power when second laser signal, P are received for the receiving end3_rIt is connect to be described
Receiving end receives the reception power when third laser signal, α1It is alcohol gas molecule in the first laser signal wave strong point
Absorption coefficient, α2Absorption coefficient for alcohol gas molecule in the second laser signal wave strong point, α3For alcohol gas molecule
Absorption coefficient at the third laser signal wavelength, L are laser signal from the transmitting terminal to the path of the receiving end
Length.
In an alternative embodiment, judge whether to deposit according to first alcohol gas concentration and the second alcohol gas concentration
It is checked in drunk driving and the escape that whether opens a window, including：
When first alcohol gas concentration is greater than second alcohol gas concentration, window of not driving is judged, when first
When alcohol gas concentration is greater than the first preset value, then there are drunk drivings for judgement；
When first alcohol gas concentration is equal to second alcohol gas concentration, judge to open a window, when described first
When alcohol gas concentration is greater than the second preset value, then judges that windowing is escaped and check, wherein second preset value is less than described the
One preset value.In an alternative embodiment, the wavelength for the first laser signal that the transmitting terminal is sent is 1.396um, second swashs
The wavelength of optical signal is 1.43um, the wavelength of third laser signal is 3.39um.
A kind of drunk driving remote sensing system, including：It is oppositely arranged on the emitter and reception device of both sides of the road,
In：
The emitter, for sending first laser letter to vehicle to be detected when drunk driving remote sensing event occurs
Number, second laser signal and third laser signal, wherein the wavelength of the first laser signal is the first of alcohol gas to absorb
The corresponding wavelength in the peak and first laser signal is not absorbed by glass for vehicle window, the second laser signal is not inhaled by alcohol gas
It receives, the wavelength of the third laser signal is the corresponding wavelength of the second absorption peak of alcohol gas and the third laser is described
Glass for vehicle window absorbs；
The reception device, for receiving first laser signal, second laser signal after the vehicle to be detected
With third laser signal, and according to three signals received judge whether there is drunk driving and whether open a window escape check.
In an alternative embodiment, the emitter includes the first transmitting module, the second transmitting module, third transmitting mould
Block and control device of light beam, first transmitting module are used to send the laser of first wave length, and second transmitting module is for sending out
The laser of second wave length is sent, the third transmitting module is used to send the laser of third wavelength, first transmitting module, second
Transmitting module, third transmitting module are connect with the control device of light beam respectively, and the control device of light beam is used for the first wave
The laser of long laser, second wave length and the laser of third wavelength are collimated, and the first laser signal, second are respectively obtained
Laser signal and third laser signal.
In an alternative embodiment, the reception device includes optical antenna, signal processing module and data processing module,
The optical antenna is for receiving first laser signal, second laser signal and third laser after the vehicle to be detected
Signal, first laser signal that the signal processing module is used to receive the optical antenna, second laser signal and the
Three laser signals are separately converted to corresponding first electric signal, the second electric signal and third electric signal, the data processing module
For judging whether there is drunk driving according to first electric signal, the second electric signal and the second electric signal and the escape that whether opens a window
It checks.
In an alternative embodiment, the reception device is used for：
The first alcohol gas concentration is determined according to the first laser signal and second laser signal that receive；
The second alcohol gas concentration is determined according to the second laser signal and third laser signal that receive；
Drunk driving is judged whether there is according to first alcohol gas concentration and the second alcohol gas concentration and whether is opened
Window, which is escaped, to be checked.
In an alternative embodiment, the reception device is used for：
When first alcohol gas concentration is greater than second alcohol gas concentration, window of not driving is judged, when first
When alcohol gas concentration is greater than the first preset value, then there are drunk drivings for judgement；
When first alcohol gas concentration is equal to second alcohol gas concentration, judge to open a window, when described first
When alcohol gas concentration is greater than the second preset value, then judges that windowing is escaped and check, wherein second preset value is less than described the
One preset value.Compared with the prior art, the invention has the advantages that：
Drunk driving remote detecting method provided in an embodiment of the present invention, by sending three different wave lengths to vehicle to be detected
Laser signal, the alcohol gas carried after being absorbed using the laser signal of three different wave lengths by alcohol gas, glass for vehicle window are dense
Degree and glass for vehicle window information determine whether the alcohol gas concentration of vehicle car to be measured is up to standard and whether identification vehicle window closes,
This method detects drunk driving behavior in a manner of long-range remote sensing, does not influence normal road and passes through, covers to the detection of drunk driving vehicle
Lid rate is high, and detection efficiency is fast, and measurement method eliminates the influence of other environmental gas, and is arranged by multi-wavelength, can be quick
Judge whether drunk driving situation and vehicle open a window, capable of effectively deterring vehicle, deliberately the behavior of detection is escaped in windowing when crossing inspection,
The missing inspection as caused by windowing reduction interior alcohol concentration is avoided, the accuracy rate of drunk driving remote sensing is improved.
Detailed description of the invention
Fig. 1 is that the embodiment of the invention provides a kind of drunk driving remote detecting method flow charts；
Fig. 2 is that the embodiment of the invention provides a kind of drunk driving remote sensing system schematics.
Specific embodiment
The present invention further illustrates specific embodiment with following preferred embodiment, but the present invention is not limited in following reality
Apply example.
Referring to Fig. 1, the embodiment of the invention provides a kind of drunk driving remote detecting methods, include the following steps：
Step 101：When drunk driving remote sensing event occurs, transmitting terminal to vehicle to be detected send first laser signal,
Second laser signal and third laser signal, wherein the wavelength of the first laser signal is the first absorption peak of alcohol gas
The corresponding wavelength and first laser signal is not absorbed by glass for vehicle window, the second laser signal is not inhaled by alcohol gas
It receives, the wavelength of the third laser signal is the corresponding wavelength of the second absorption peak of alcohol gas and the third laser is described
Glass for vehicle window absorbs；
Specifically, in the embodiment of the present invention, the wavelength of three laser signals of transmitting terminal transmitting is different, wherein the
Three laser are preferably absorbed by force by glass for vehicle window；
Step 102：Receiving end receives first laser signal after the vehicle to be detected, second laser signal and the
Three laser signals, and drunk driving is judged whether there is and the escape inspection that whether opens a window according to three signals received.
Specifically, in the embodiment of the present invention, receiving end receives first laser signal after the vehicle to be detected, the
After dual-laser signal and third laser signal, first can convert electric signal for laser signal, then to obtained electric signal into
Whether row data processing obtains alcohol gas concentration and judges signal by have passed through when vehicle to be detected according to each signal difference
Glass for vehicle window；
Drunk driving remote detecting method provided in an embodiment of the present invention, by sending three different wave lengths to vehicle to be detected
Laser signal, the alcohol gas carried after being absorbed using the laser signal of three different wave lengths by alcohol gas, glass for vehicle window are dense
Degree and glass for vehicle window information determine whether the alcohol gas concentration of vehicle car to be measured is up to standard and whether identification vehicle window closes,
This method detects drunk driving behavior in a manner of long-range remote sensing, does not influence normal road and passes through, covers to the detection of drunk driving vehicle
Lid rate is high, and detection efficiency is fast, and measurement method eliminates the influence of other environmental gas, and is arranged by multi-wavelength, can be quick
Judge whether drunk driving situation and vehicle open a window, capable of effectively deterring vehicle, deliberately the behavior of detection is escaped in windowing when crossing inspection,
The missing inspection as caused by windowing reduction interior alcohol concentration is avoided, the accuracy rate of drunk driving remote sensing is improved.
In an alternative embodiment, whether three signals that the basis receives judge whether there is drunk driving and open a window
It escapes and checks, including：The first alcohol gas concentration is determined according to the first laser signal and second laser signal that receive；
The second alcohol gas concentration is determined according to the second laser signal and third laser signal that receive；According to first wine
Vital essence bulk concentration and the second alcohol gas concentration judge whether there is drunk driving and the escape that whether opens a window checks.
It specifically, can be according to the beam emissions function of first laser signal and second laser signal in the embodiment of the present invention
Rate and echo power Inversion Calculation go out alcohol gas concentration, according to the beam emissions function of second laser signal and third laser signal
Rate and echo power are finally inversed by another alcohol gas concentration, when two alcohol gas concentrations are identical, then prove that light beam does not have
By glass for vehicle window, there are missing inspections；This method calculates simple, accuracy height, can be further improved remote sensing efficiency.
In one embodiment, the receiving end determines the first alcohol gas concentration according to formula (1)：
The second alcohol gas concentration is determined according to formula (2)：
Wherein, C is the first alcohol gas concentration, and C' is the second alcohol gas concentration, P1_tFor described in transmitting terminal transmission
Transmission power when first laser signal, P2_tThe transmission power when second laser signal, P are sent for the transmitting terminal3_t
The transmission power when third laser signal, P are sent for the transmitting terminal1_rThe first laser is received for the receiving end
Reception power when signal, P2_rThe reception power when second laser signal, P are received for the receiving end3_rIt is connect to be described
Receiving end receives the reception power when third laser signal, α1It is alcohol gas molecule in the first laser signal wave strong point
Absorption coefficient, α2Absorption coefficient for alcohol gas molecule in the second laser signal wave strong point, α3For alcohol gas molecule
Absorption coefficient at the third laser signal wavelength, L are laser signal from the transmitting terminal to the path of the receiving end
Length.
It willIt is denoted as K, drunk driving alarm threshold concentration C0Corresponding K ratio is denoted as K0, when practical application, when K is less than
K0, then illustrate that alcohol gas concentration C is greater than early warning concentration C0, system can be according to K value and K0The comparison of value exports alarm signal.
This method can be by drunk driving alarm threshold concentration C0Corresponding K0As judgment criteria, it may not need and calculate alcohol gas concentration
Judge whether drunk driving.
In an alternative embodiment, judge whether to deposit according to first alcohol gas concentration and the second alcohol gas concentration
It is checked in drunk driving and the escape that whether opens a window, including：
When first alcohol gas concentration is greater than second alcohol gas concentration, window of not driving is judged, when first
When alcohol gas concentration is greater than the first preset value, then there are drunk drivings for judgement；When first alcohol gas concentration is equal to described the
When two alcohol gas concentrations, judge to open a window, when first alcohol gas concentration is greater than the second preset value, then judges that windowing is escaped
Keep away inspection, wherein second preset value is less than first preset value.
Since third laser signal can be absorbed by force by glass for vehicle window, in the presence of glass for vehicle window, swashed by third
The alcohol gas concentration that optical signal calculates should be less than the alcohol gas concentration calculated by first laser signal, therefore when the two
It when identical, can prove that vehicle window is opened, there is driver to have and escape monitoring suspicion；Situation is opened according to vehicle window, resets judgement
Standard can effectively judge whether windowing is to escape to check, reduce omission factor, further improve remote sensing accuracy rate.
Referring to fig. 2, the embodiment of the invention also provides a kind of drunk driving remote sensing systems, for realizing the above method, institute
The system of stating includes the emitter 1 and reception device 2 for being oppositely arranged on both sides of the road, wherein：
Emitter 1, for when drunk driving remote sensing event occurs, to vehicle to be detected transmission first laser signal,
Second laser signal and third laser signal, wherein the wavelength of the first laser signal is the first absorption peak of alcohol gas
The corresponding wavelength and first laser signal is not absorbed by glass for vehicle window, the second laser signal is not inhaled by alcohol gas
It receives, the wavelength of the third laser signal is the corresponding wavelength of the second absorption peak of alcohol gas and the third laser is described
Glass for vehicle window absorbs；Reception device 2 is for receiving first laser signal, second laser signal after the vehicle to be detected
With third laser signal, and according to three signals received judge whether there is drunk driving and whether open a window escape check.
Drunk driving remote sensing system provided in an embodiment of the present invention, by sending three different wave lengths to vehicle to be detected
Laser signal, the alcohol gas carried after being absorbed using the laser signal of three different wave lengths by alcohol gas, glass for vehicle window are dense
Degree and glass for vehicle window information determine whether the alcohol gas concentration of vehicle car to be measured is up to standard and whether identification vehicle window closes,
This method detects drunk driving behavior in a manner of long-range remote sensing, does not influence normal road and passes through, covers to the detection of drunk driving vehicle
Lid rate is high, and detection efficiency is fast, and measurement method eliminates the influence of other environmental gas, and is arranged by multi-wavelength, can be quick
Judge whether drunk driving situation and vehicle open a window, capable of effectively deterring vehicle, deliberately the behavior of detection is escaped in windowing when crossing inspection,
The missing inspection as caused by windowing reduction interior alcohol concentration is avoided, the accuracy rate of drunk driving remote sensing is improved.
The emitter includes the first transmitting module, the second transmitting module, third transmitting module and control device of light beam 8,
In the embodiment of the present invention, each transmitting module includes driver and laser (as shown in Fig. 2, the first transmitting module includes first
Driver 5 and first laser device 2, the second transmitting module include the second driver 6 and second laser 3, third transmitting module packet
Include third driver 7 and third laser 4), driver, laser and control device of light beam are connected by optical fiber, and driver passes through
(first transmitting module is used to send the laser of first wave length to the laser of current control laser transmitting wavelength stabilization, described
Second transmitting module is used to send the laser of second wave length, and the third transmitting module is used to send the laser of third wavelength), respectively
Laser coaxial output, control device of light beam 8 respectively obtain the corresponding laser of each wavelength for collimating to the laser of each wavelength
Signal.The emitter can obtain stable laser signal, further improve the accuracy of remote sensing.
As shown in Fig. 2, reception device 2 includes optical antenna 9, signal processing module (including detector 10 and filter and amplification
Unit 11) and data processing module (including signal extraction unit 12 and warning information recognition unit 13), optical antenna 9 is for connecing
Receive first laser signal, second laser signal and third laser signal after the vehicle to be detected, the signal processing
Module is for first laser signal, second laser signal and third laser signal that optical antenna 9 receives to be separately converted to
Corresponding first electric signal, the second electric signal and third electric signal, the data processing module are used for according to first telecommunications
Number, the second electric signal and the second electric signal judge whether there is drunk driving and the escape that whether opens a window checks.The receiving device can be really
Definitely really receive the laser signal after vehicle to be measured, it is ensured that the accuracy of calculated result.
In an alternative embodiment, reception device 2 is used for：
The first alcohol gas concentration is determined according to the first laser signal and second laser signal that receive；
The second alcohol gas concentration is determined according to the second laser signal and third laser signal that receive；
Drunk driving is judged whether there is according to first alcohol gas concentration and the second alcohol gas concentration and whether is opened
Window, which is escaped, to be checked.
In an alternative embodiment, the reception device is used for：
When first alcohol gas concentration is greater than second alcohol gas concentration, window of not driving is judged, when first
When alcohol gas concentration is greater than the first preset value, then there are drunk drivings for judgement；When first alcohol gas concentration is equal to described the
When two alcohol gas concentrations, judge to open a window, when first alcohol gas concentration is greater than the second preset value, then judges that windowing is escaped
Keep away inspection, wherein second preset value is less than first preset value.The following are a specific embodiments of the invention：
As shown in Figure 1, the embodiment of the invention provides a kind of drunk driving remote sensing system, including emitter 1 and reception
Device 2, emitter 1 include the first transmitting module, the second transmitting module, third transmitting module and control device of light beam 8, wherein
First transmitting module includes the first driver 5 and first laser device 2, and the second transmitting module includes that the second driver 6 and second swashs
Light device 3, third transmitting module include third driver 7 and third laser 4, and first laser device 2 is that wavelength is swashing for 1.396um
Light device, second laser 3 are the laser that wavelength is 1.43um, and third laser 4 is the laser that wavelength is 3.39um；It receives
Device 2 includes optical antenna 9, signal processing module (including detector 10 and filter and amplification unit 11) and data processing module
(including signal extraction unit 12 and warning information recognition unit 13), optics electric wire 9 and control device of light beam 8 are coaxial, signal processing
Module is located at 9 rear end of optical antenna, and the laser signal that optical antenna 9 forwards is changed into electric signal, telecommunications by photodetector 10
Number through filter and amplification unit 11 amplification after be sent to signal extraction unit 12, then through signal extraction unit 12 be sent to early warning letter
Cease recognition unit 13.Emitter 1 and reception device 2 are located in the cabinet of both sides of the road.
Emitter and reception device are respectively erected in both sides of the road, when vehicle passes through, transmitting module passes through electric current control
The laser of system output wavelength stabilization, onwards transmission is to drunk driving vehicle after control device of light beam collimates for laser, by drunk driving vehicle
The absorption of interior gas, then enter subsequent module after receiving via reception device and carry out signal analysis, data processing and early warning letter
Breath identification.
Alcohol gas molecule has an obvious absorption peak between 1.418um to 1.379um, peak position in 1.396um,
Peak valley position absorption peak absorption peak at 1.429um, opposite 2.74um, 3.39um, 7.2um, 8.05um and 9.05um is relatively narrow,
And near infrared band laser and detector are all easier to obtain.Alcohol gas molecule has absorption peak at one, vehicle glass at 3.39um
Glass has apparent absorption at the wavelength.Using Difference Absorption of the alcohol gas molecule at 1.396um and 1.429um wavelength come
Inverting alcohol concentration.Window opening and closing is identified using two inversion results of 1.396um/1.429um and 3.39um/1.429um
State.
Specifically alcohol gas concentration calculation method is：
The first alcohol gas concentration is determined according to formula (1)：
The second alcohol gas concentration is determined according to formula (2)：
Wherein, C is the first alcohol gas concentration, and C' is the second alcohol gas concentration, P1_tFor described in transmitting terminal transmission
Transmission power when first laser signal, P2_tThe transmission power when second laser signal, P are sent for the transmitting terminal3_t
The transmission power when third laser signal, P are sent for the transmitting terminal1_rThe first laser is received for the receiving end
Reception power when signal, P2_rThe reception power when second laser signal, P are received for the receiving end3_rIt is connect to be described
Receiving end receives the reception power when third laser signal, α1It is alcohol gas molecule in the first laser signal wave strong point
Absorption coefficient, α2Absorption coefficient for alcohol gas molecule in the second laser signal wave strong point, α3For alcohol gas molecule
Absorption coefficient at the third laser signal wavelength, L are laser signal from the transmitting terminal to the path of the receiving end
Length.
It willIt is denoted as K, drunk driving alarm threshold concentration C0Corresponding K ratio is denoted as K0, when practical application, when K is less than
K0, then illustrate that alcohol gas concentration C is greater than early warning concentration C0, system can be according to K value and K0The comparison of value exports alarm signal.
When vehicle window windowing, C' will be equal to C, and when vehicle window is closed, C' will be less than C, therefore can be big according to the numerical value of C' and C
Small judgement window opening and closing state.
The above, optimal specific embodiment only of the invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
The content that description in the present invention is not described in detail belongs to the well-known technique of professional and technical personnel in the field.
Claims (10)
1. a kind of drunk driving remote detecting method, which is characterized in that including：
When drunk driving remote sensing event occurs, transmitting terminal sends first laser signal, second laser signal to vehicle to be detected
With third laser signal, wherein the wavelength of the first laser signal be alcohol gas the corresponding wavelength of the first absorption peak and
The first laser signal is not absorbed by glass for vehicle window, and the second laser signal is not absorbed by alcohol gas, and the third swashs
The wavelength of optical signal is the corresponding wavelength of the second absorption peak of alcohol gas and the third laser is absorbed by the glass for vehicle window；
Receiving end receives first laser signal, second laser signal and third laser signal after the vehicle to be detected,
And drunk driving is judged whether there is and the escape inspection that whether opens a window according to three signals received.
2. drunk driving remote detecting method according to claim 1, which is characterized in that three signals that the basis receives
Drunk driving is judged whether there is, including：
The first alcohol gas concentration is determined according to the first laser signal and second laser signal that receive；
The second alcohol gas concentration is determined according to the second laser signal and third laser signal that receive；
It judges whether there is drunk driving according to first alcohol gas concentration and the second alcohol gas concentration and whether opens a window and escape
Keep away inspection.
3. drunk driving remote detecting method according to claim 2, which is characterized in that the receiving end is determined according to formula (1)
First alcohol gas concentration：
The second alcohol gas concentration is determined according to formula (2)：
Wherein, C is the first alcohol gas concentration, and C' is the second alcohol gas concentration, P1_tDescribed first is sent for the transmitting terminal
Transmission power when laser signal, P2_tThe transmission power when second laser signal, P are sent for the transmitting terminal3_tFor institute
State transmission power when transmitting terminal sends the third laser signal, P1_rThe first laser signal is received for the receiving end
When reception power, P2_rThe reception power when second laser signal, P are received for the receiving end3_rFor the receiving end
Receive the reception power when third laser signal, α1For alcohol gas molecule the first laser signal wave strong point suction
Receive coefficient, α2Absorption coefficient for alcohol gas molecule in the second laser signal wave strong point, α3It is alcohol gas molecule in institute
The absorption coefficient at third laser signal wavelength is stated, L is laser signal from the transmitting terminal to the path length of the receiving end.
4. drunk driving remote detecting method according to claim 2 or 3, which is characterized in that according to first alcohol gas
Concentration and the second alcohol gas concentration judge whether there is drunk driving and the escape that whether opens a window checks, including：
When first alcohol gas concentration is greater than second alcohol gas concentration, window of not driving is judged, when the first alcohol
When gas concentration is greater than the first preset value, then there are drunk drivings for judgement；
When first alcohol gas concentration is equal to second alcohol gas concentration, judge to open a window, when first alcohol
When gas concentration is greater than the second preset value, then judges that windowing is escaped and check, wherein it is pre- that second preset value is less than described first
If value.
5. drunk driving remote detecting method according to claim 1, which is characterized in that the first laser that the transmitting terminal is sent
The wavelength of signal is 1.396um, the wavelength of second laser signal is 1.43um, the wavelength of third laser signal is 3.39um.
6. a kind of drunk driving remote sensing system, which is characterized in that including：It is oppositely arranged on emitter and the reception of both sides of the road
Device, wherein：
The emitter, for when drunk driving remote sensing event occurs, to vehicle to be detected transmission first laser signal, the
Dual-laser signal and third laser signal, wherein the wavelength of the first laser signal is the first absorption peak pair of alcohol gas
The wavelength and the first laser signal answered are not absorbed by glass for vehicle window, and the second laser signal is not absorbed by alcohol gas,
The wavelength of the third laser signal be alcohol gas the corresponding wavelength of the second absorption peak and the third laser by the vehicle
Glass pane absorbs；
The reception device, for receiving the first laser signal after the vehicle to be detected, second laser signal and
Three laser signals, and drunk driving is judged whether there is and the escape inspection that whether opens a window according to three signals received.
7. drunk driving remote sensing system according to claim 6, which is characterized in that the emitter includes the first transmitting
Module, the second transmitting module, third transmitting module and control device of light beam, first transmitting module is for sending first wave length
Laser, second transmitting module are used to send the laser of second wave length, and the third transmitting module is for sending third wavelength
Laser, first transmitting module, the second transmitting module, third transmitting module connect with the control device of light beam respectively, institute
Control device of light beam is stated to be used to collimate the laser of the laser of the first wave length, the laser of second wave length and third wavelength,
Respectively obtain the first laser signal, second laser signal and third laser signal.
8. drunk driving remote sensing system according to claim 6, which is characterized in that the reception device includes optics day
Line, signal processing module and data processing module, the optical antenna are used to receive first after the vehicle to be detected
Laser signal, second laser signal and third laser signal, the signal processing module is for receiving the optical antenna
First laser signal, second laser signal and third laser signal be separately converted to corresponding first electric signal, the second telecommunications
Number and third electric signal, the data processing module be used for according to first electric signal, the second electric signal and the second electric signal
It judges whether there is drunk driving and the escape that whether opens a window checks.
9. drunk driving remote sensing system according to claim 6, which is characterized in that the reception device is used for：
The first alcohol gas concentration is determined according to the first laser signal and second laser signal that receive；
The second alcohol gas concentration is determined according to the second laser signal and third laser signal that receive；
It judges whether there is drunk driving according to first alcohol gas concentration and the second alcohol gas concentration and whether opens a window and escape
Keep away inspection.
10. drunk driving remote sensing system according to claim 9, which is characterized in that the reception device is used for：
When first alcohol gas concentration is greater than second alcohol gas concentration, window of not driving is judged, when the first alcohol
When gas concentration is greater than the first preset value, then there are drunk drivings for judgement；
When first alcohol gas concentration is equal to second alcohol gas concentration, judge to open a window, when first alcohol
When gas concentration is greater than the second preset value, then judges that windowing is escaped and check, wherein it is pre- that second preset value is less than described first
If value.
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