CN101206769A - Method for detecting infrared vehicle separation signal and device thereof - Google Patents
Method for detecting infrared vehicle separation signal and device thereof Download PDFInfo
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- CN101206769A CN101206769A CNA2006101349763A CN200610134976A CN101206769A CN 101206769 A CN101206769 A CN 101206769A CN A2006101349763 A CNA2006101349763 A CN A2006101349763A CN 200610134976 A CN200610134976 A CN 200610134976A CN 101206769 A CN101206769 A CN 101206769A
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Abstract
The invention relates to a road automatic toll collection technology, in particular to an infrared vehicle separation signal detection method used for detecting of a road automatic toll collection system, and the device thereof. The invention adopts a single-send but multiple-receive scan round mode, and realizes decoding, and enlarging the received infrared signal of a detecting area through an infrared carrier frequency modulation and the scan round of an infrared beam, and regulates automatically a receiving gain; a control program performs region detection, judges the sizes of screening equipment in a detection region, and performs a detection, an alarm and a status display for a separation signal between two vehicles in the detection region. The invention has the advantages that the detection precision is higher, and the adaptivity is strong; the invention is applied to a road toll collection system, and the invention can reliably detect and separate a semitrailer, an independent trailer and a rigid truck which pass.
Description
Technical field
The present invention relates to highway robotization toll collection technique, specifically a kind of highway automatic fare collection system detects the infrared vehicle separation signal detection method and the device thereof of usefulness.
Background technology
The vehicle separation detection that the infrared vehicle separation vessel aims at the highway automated toll system designs, is applied to can eliminate fully in the system with the car phenomenon, and with semitrailer, full trailor, bicycle reliable separation.Guarantee the one-to-one relationship of system's charge data and vehicle, many cars that occur owing to erroneous judgement or the phenomenon of lacking car can not occur.
Traditional infrared vehicle separation vessel is most to adopt one the one formed light curtain of receiving of recycle design that vehicle is detected.Be the corresponding infrared receiving terminal of a branch of light, form the light curtain by many groups of parallel infrared rays.Tightly do not increase cost like this, and will go out the detection light on a plane, active space, greatly reduce the accuracy of detection of system when infrared receiving terminal or emitting head break down.For the general integrated reception receiving infrared-ray signal that adopts of traditional infrared separation vessel receiving end, the bandwidth of an integrated reception receive frequency is narrow, when system's long-time running in abominable site environment, the dust of surface accumulation shelters from the reception head, the integrated adjusting that head can't be realized self enlargement factor, adaptability, the poor robustness of system under atrocious weather and environment of receiving.
Summary of the invention
The infrared vehicle separation signal detection method and the device thereof that the purpose of this invention is to provide the more high and low cost of a kind of accuracy of detection and have the automatic adjusting receiving gain function of adaptivity.
To achieve these goals, technical scheme of the present invention is as follows:
Infrared vehicle separation signal detection method: adopt multicast scan round mode, receiving gain is decoded, amplifies and regulated automatically to the achieve a butt joint infrared signal of the surveyed area received of the scan round by infrared ray carrier frequency modulation and infrared light beam; Control program carries out the zone and detects, and judges the size of surveyed area shelter, to the separation signal between two vehicles in the surveyed area detect, warning and state show;
Wherein the judgement of surveyed area shelter size is in two kinds of situation: first kind of situation: when photoisolator output be not excited out-of-date, if surveyed area has continuous at least infrared receiving modules more than half to be blocked, the time of blocking is at least 600u in the occlusion area, the exciting light electric isolator, the output surveyed area signal that is blocked; Second kind of situation: when photoisolator output has been excited, as long as there is an infrared receiving block signal to be blocked, the excited state that keeps photoisolator output, to the last an infrared receiving module is removed to block and is at least 10ms, photoisolator transfers not excited state to, and the separation signal between two vehicles is detected.
Infrared vehicle separation signal pick-up unit comprises:
One device transmitting terminal is made up of emission control module and 1 infrared transmission module at least, wherein:
Infrared transmission module, linear array detects shelter (vehicle) at surveyed area, by the circulation modulation of emission control module, detection signal is delivered to infrared receiving module;
The emission control module, the scanning sequence and the infrared signal coded modulation of control infrared transmission module;
One device receiving end is formed by receiving control module and 1 infrared receiving module at least, wherein:
Infrared receiving module, linear array detects shelter (vehicle) at surveyed area, receives infrared signal, is converted into electric signal signal is delivered to the reception control module;
Receive control module, input signal is the detection signal of infrared receiving module, and output is by measuring the separation detection of separable programming to vehicle;
The device transmitting terminal links to each other by the shielding synchronizing cable with the device receiving end, to improve the reliability of system;
Described infrared transmission module is made up of the infrared light emission pipe, and 10 pairs of infrared light emission Guan Weiyi groups are electrically connected with the infrared emission control module; 10 pairs of described infrared light emission pipes are one group; Described emission control module is made up of frequency divider, 1-2 counter, multivibrator, wherein, the clock signal of multivibrator is to frequency divider, the 1-2 counter of mutual series connection is delivered in frequency divider output, carry out the scan round of infrared ray carrier frequency modulation and infrared light beam, the output infrared signal is delivered to infrared receiving module, and the synchronizing signal of the 2nd counter is connected to the reception control module of device receiving end by the shielding synchronizing cable; Described infrared ray receiver module comprises 4-7 operational amplifier, code translator, digital regulation resistance, wherein the infrared signal of the two-stage of the 4th operational amplifier amplification is connected to the 5th operational amplifier, signal behind its limit filtration is by the 6th operational amplifier detection, and the signal after the detection exports the reception control module to through the 7th operational amplifier integration, shaping; Described code translator receives the output signal of control module, and output terminal links to each other with digital regulation resistance;
Described reception control module comprises:
Microprocessor, the microprocessor internal storing control program, the read-write of control lock storage is by serial ports and host communication; By photoisolator trigger relay output detection signal;
The 1-3 latch, respectively with microprocessor communication, the 1st latch receives the infrared received signal of phase inverter; The 2nd latch output control infrared receiving Block decoder gating signal is controlled the digital regulation resistance sheet choosing of corresponding infrared receiving module, and is transferred its gain; The 3rd latch exports LCD to, the display system duty;
Code translator, address decoding selects to output signal to the 2-3 latch;
Described control program idiographic flow is: at first each register is carried out initialization, then device transmitting terminal and device receiving end are carried out communication test; If the whole normal communications of infrared transmission module and infrared receiving module enter the processing vehicle and pass through subroutine; When system communication is undesired, directly enter fault handling; In fault handling, judge system's processing of whether can demoting, if having at least two infrared receiving modules to break down, system does not enter the degradation tupe, triggers controlling alarm output; Otherwise system enters degradation and handles subroutine;
Described processing vehicle by the subroutine idiographic flow is: in the testing process that vehicle passes through, judge that infrared receiving module blocks quantity and whether can excite a photoisolator, if there is continuous at least infrared receiving block signal more than half to be blocked, photoisolator output is excited; Otherwise, regulate corresponding infrared receiving module gain, wherein, judge whether the infrared receiving module gain-adjusted is maximal value, if maximal value, system enters the fault handling subroutine, otherwise, withdraw from the processing vehicle and pass through subroutine.After photoisolator output is excited, judged whether that vehicle passes through, as long as there is an infrared receiving module to be blocked, systemic circulation is waited for, to the last an infrared receiving module is removed and is blocked, then detect the separation signal between two vehicles of walking, system withdraws from and handles vehicle and pass through subroutine;
Described degradation is handled subroutine and is referred to: the address of writing down out of order infrared receiving module, shield this address infrared receiving module signal not as blocking basis for estimation, whether judge that infrared receiving module blocks quantity can the exciting light electric isolator, if there is continuous at least infrared receiving block signal more than half to be blocked, photoisolator output is excited; Otherwise, regulate corresponding infrared receiving module gain, wherein, judge whether the infrared receiving module gain-adjusted is maximal value, if maximal value, system enters the fault handling subroutine, otherwise, withdraw from the processing vehicle and pass through subroutine.After photoisolator output is excited, judged whether that vehicle passes through, as long as there is an infrared receiving module to be blocked, systemic circulation is waited for, to the last an infrared receiving module is removed and is blocked, then detect the separation signal between two vehicles of walking, system withdraws from and handles vehicle and pass through subroutine.
The principle of the invention is as follows:
Device emission control module is carried out coded modulation to infrared signal, receives control module through shielding synchronizing cable and device and links to each other.Device transmitting terminal and receiving end adopt multicast scan round mode to form surveyed area.If there is vehicle to enter surveyed area, it will block one or more optical receivers, by described infrared vehicle separation signal detection method, to the separation signal between two vehicles in the surveyed area detect, warning and state show.When the gray scale of an infrared receiving module is increased to a threshold value automatically (LED has under the situation of dust accumulation), the MCU that receives control module is by latch U11 output control infrared receiving Block decoder gating signal, control the digital regulation resistance sheet choosing of corresponding infrared receiving module, and transfer its gain, make the infrared ray electric isolator return to normal operating conditions.
Advantage of the present invention is as follows:
1. accuracy of detection height.The light curtain of infrared vehicle separation signal pick-up unit of the present invention adopts multicast scan round mode, and promptly when one group of infrared transmission module work, all infrared receiving module receives simultaneously, thereby increases sensing range, improves accuracy of detection, reduces cost.
2. the infrared receiving module of the present invention's employing is by receiving the feedback function of control module, and the periodic adjustment receiving gain increases infrared signal receive frequency bandwidth automatically, has strengthened adaptability, stability, the robustness of infrared vehicle separation vessel working environment.
3. the present invention can be used for highroad toll collection system, and operating personnel can carry out safe operation by detection separation signal provided by the present invention, and then eliminates fully with the car phenomenon; The present invention can detect semitrailer, full trailor, the bicycle that is passed through and separate reliably.
Description of drawings
Fig. 1 is a general structure schematic diagram of the present invention.
Fig. 2 is emission control module ultimate principle figure of the present invention.
Fig. 3 is infrared receiving module ultimate principle figure of the present invention.
Fig. 4 receives control module ultimate principle figure for the present invention.
Fig. 5 is a software basic flow sheet of the present invention.
Fig. 6 passes through subroutine for the present invention handles vehicle.
Fig. 7 is the present invention's processing subroutine of demoting.
Embodiment
Be described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the present invention includes:
The device transmitting terminal is made up of emission control module and 1 infrared transmission module at least, wherein:
Infrared transmission module, linear array detects vehicle at detection zone, by the circulation modulation of emission control module, detection signal is delivered to infrared receiving module;
The emission control module, the scanning sequence and the infrared signal coded modulation of control infrared transmission module;
The device receiving end is formed by receiving control module and 1 infrared receiving module at least, wherein:
Infrared receiving module, linear array detects vehicle at detection zone, receives the infrared receiving module light signal, is converted into electric signal signal is delivered to the reception control module;
Receive control module, input signal is the detection signal of infrared receiving module, and output is by measuring the separation detection of separable programming to vehicle;
Described device transmitting terminal links to each other by the shielding synchronizing cable with the device receiving end, to improve the reliability of system.
As shown in Figure 1, described infrared transmission module is made up of infrared light emission pipe LED, and 10 couples of infrared light emission pipe LED are one group, can organize (present embodiment is eight groups) more, and the wire jumper that passes through can dispose corresponding address, is electrically connected with the infrared emission control module.
As shown in Figure 2, described emission control module is by frequency divider U1,1-2 counter U2-U3, multivibrator is formed, wherein, the clock signal of multivibrator is to frequency divider U1, the 1-2 counter U2-U3 of mutual series connection is delivered in frequency divider U1 output, 1-2 counter U2-U3 controls transmitter module, realize the scan round of infrared ray carrier frequency modulation and infrared light beam (present embodiment is 80 pairs of light beams), the output infrared signal is delivered to infrared receiving module, and the synchronizing signal of the 2nd counter U3 is connected to the reception control module of separation vessel receiving end by the shielding synchronizing cable.
As shown in Figure 3, the infrared ray receiver module, comprise that 4-7 operational amplifier U4-U7 (present embodiment adopts TL072 low noise field effect dual operational amplifier), the 4th operational amplifier U4 carry out two-stage to the infrared signal that receives and amplify, amplified signal is carried out limit filtration through the 5th operational amplifier U5, signal carries out detection through the 6th operational amplifier U6 after the filtering, signal carries out integration and shaping output through the 47th operational amplifier U7 after the detection, and the signal of output is sent to the reception control module.Infrared receiving module also comprises code translator U8 (present embodiment adopts the 4-10 bit decoder), receive the control module signal, the sheet of digital regulation resistance U9 (present embodiment adopts non-volatile digital potentiometer X9C103) by the code translator gating infrared receiving module joint enlargement factor of recruiting makes system adapt to rugged surroundings automatically.
As shown in Figure 4, receive control module and comprise microprocessor MCU (embodiment adopts 89C51 kernel single-chip microcomputer Philip P89V51RD2), microprocessor MCU storage inside has control program, comprises the 64K program storage.Described reception control module also comprises 1-3 latch U10-U12 (present embodiment adopts the 74HC373 latch), the read-write of microprocessor MCU control lock storage, the 1st latch U10 reads the infrared received signal of phase inverter U13 (present embodiment adopts the phase inverter 74HC14 of band Schmidt function), and the 2nd latch U11 output control infrared receiving Block decoder gating is controlled the digital regulation resistance sheet choosing of corresponding infrared receiving module.The 3rd latch U12 output control LCD LED, the display system duty.In addition, code translator U12 (present embodiment adopts 7,4HC,138 three-eight code translators) address decoding is selected output control 2-3 latch U11-U12.Microprocessor MCU realizes and host communication by serial ports U15 (present embodiment adopts MAX232 serial ports level transferring chip).Microprocessor MCU is by photoisolator U16 (present embodiment adopts MCT62) control trigger relay output detection signal (present embodiment can export detection signal to worker's controller).
As shown in Figure 5, the control program idiographic flow is: at first each register is carried out initialization, comprise serial ports, timer and interruption; Then separation vessel transmitting terminal and separation vessel receiving end are carried out communication test; If the whole normal communications of infrared transmission module and infrared receiving module enter the processing vehicle and pass through subroutine; When system communication is undesired, directly enter fault handling; In fault handling, judge system's processing of whether can demoting, if having at least two infrared receiving modules to break down, system does not enter the degradation tupe, triggers controlling alarm output; Otherwise system enters degradation and handles subroutine.
As shown in Figure 6, handling vehicle by the subroutine idiographic flow is: in the testing process that vehicle passes through, judge that infrared receiving module blocks quantity and whether can excite the infrared vehicle separation vessel, if there is continuous at least infrared receiving block signal more than half to be blocked, photoisolator output is excited; Otherwise, regulate corresponding infrared receiving module gain, wherein, judge whether the infrared receiving module gain-adjusted is maximal value, if maximal value, system enters the fault handling subroutine, otherwise, withdraw from the processing vehicle and pass through subroutine.After photoisolator output is excited, judged whether that vehicle passes through, as long as there is an infrared receiving module to be blocked, systemic circulation waits for that to the last an infrared receiving module is removed and blocked, system withdraws from the processing vehicle and passes through subroutine.
As shown in Figure 7, degradation is handled the subroutine idiographic flow: the address of writing down out of order infrared receiving module, shield this address infrared receiving module signal not as blocking basis for estimation, whether judge that infrared receiving module blocks quantity can the exciting light electric isolator, if there is continuous at least infrared receiving block signal more than half to be blocked, photoisolator output is excited; Otherwise, regulate corresponding infrared receiving module gain, wherein, judge whether the infrared receiving module gain-adjusted is maximal value, if maximal value, system enters the fault handling subroutine, otherwise, withdraw from the processing vehicle and pass through subroutine.After photoisolator output is excited, judged whether that vehicle passes through, as long as there is an infrared receiving module to be blocked, systemic circulation is waited for, to the last an infrared receiving module is removed and is blocked, then detect the separation signal between two vehicles of walking, system withdraws from and handles vehicle and pass through subroutine.
The inventive method is: adopt multicast scan round mode, receiving gain is decoded, amplifies and regulated automatically to the achieve a butt joint infrared signal of the surveyed area received of the scan round by infrared ray carrier frequency modulation and infrared light beam; Carry out the judgement of surveyed area shelter size, to the separation signal between two vehicles in the surveyed area detect, warning and state show.The surveyed area shelter is of a size of, the judgement of surveyed area shelter size is in two kinds of situation: first kind of situation, when photoisolator output be not excited out-of-date, if surveyed area has continuous at least infrared receiving modules more than half to be blocked, the time of blocking is at least 600us in the surveyed area, and photoisolator output is excited.Second kind of situation, when photoisolator output has been excited, as long as there is an infrared receiving block signal to be blocked, described photoisolator output will keep excited state, to the last an infrared receiving module is removed to block and is at least 10ms, photoisolator transfers not excited state to, and the separation signal between two vehicles is detected.
When the gray scale of infrared receiving module is increased to a threshold value automatically (LED has under the situation of dust accumulation), it is by receiving the feedback function of control module, and the periodic adjustment receiving intensity makes infrared receiving module return to operate as normal automatically.In the time can't returning to normal condition, receive control module and judge whether the processing of to demote, if have only an infrared receiving module to break down, and other light communications still just often, the infrared vehicle separation vessel enters the degradation tupe, and the triggering warning shows the fault transmitting and receiving module by LED simultaneously; If have a plurality of infrared light emission pipes or two above receiver modules to break down, the output of system triggers controlling alarm.
Claims (11)
1. infrared vehicle separation signal detection method is characterized in that:
Adopt multicast scan round mode, receiving gain is decoded, amplifies and regulated automatically to the achieve a butt joint infrared signal of the surveyed area received of the scan round by infrared ray carrier frequency modulation and infrared light beam; Control program carries out the zone and detects, and judges the size of surveyed area shelter, to the separation signal between two vehicles in the surveyed area detect, warning and state show.
2. by the described infrared vehicle separation signal of claim 1 detection method, it is characterized in that: wherein the judgement of surveyed area shelter size is in two kinds of situation: first kind of situation: when photoisolator output be not excited out-of-date, if surveyed area has continuous at least infrared receiving modules more than half to be blocked, the time of blocking is at least 600u in the occlusion area, the exciting light electric isolator, the output surveyed area signal that is blocked; Second kind of situation: when photoisolator output has been excited, as long as there is an infrared receiving block signal to be blocked, the excited state that keeps photoisolator output, to the last an infrared receiving module is removed to block and is at least 10ms, photoisolator transfers not excited state to, and the separation signal between two vehicles is detected.
3. the pick-up unit of the described infrared vehicle separation signal of claim 1 detection method is pressed in an application, it is characterized in that comprising:
One device transmitting terminal is made up of emission control module and 1 infrared transmission module at least, wherein:
Infrared transmission module, linear array detects shelter at surveyed area, by the circulation modulation of emission control module, detection signal is delivered to infrared receiving module;
The emission control module, the scanning sequence and the infrared signal coded modulation of control infrared transmission module;
One device receiving end is formed by receiving control module and 1 infrared receiving module at least, wherein:
Infrared receiving module, linear array detects shelter at surveyed area, receives infrared signal, is converted into electric signal signal is delivered to the reception control module;
Receive control module, input signal is the detection signal of infrared receiving module, and output is by measuring the separation detection of separable programming to vehicle;
The device transmitting terminal links to each other by the shielding synchronizing cable with the device receiving end, to improve the reliability of system.
4. by the described pick-up unit of claim 3, it is characterized in that: described infrared transmission module is made up of infrared light emission pipe (LED), and 10 pairs of infrared light emission pipes (LED) are one group, are electrically connected with the infrared emission control module.
5. by the described pick-up unit of claim 4, it is characterized in that: 10 pairs of described infrared light emission pipes (LED) are one group.
6. by the described pick-up unit of claim 3, it is characterized in that: described emission control module is made up of frequency divider (U1), 1-2 counter (U2-U3), multivibrator, wherein, the clock signal of multivibrator is to frequency divider (U1), the 1-2 counter (U2-U3) of mutual series connection is delivered in frequency divider (U1) output, carry out the scan round of infrared ray carrier frequency modulation and infrared light beam, the output infrared signal is delivered to infrared receiving module, and the synchronizing signal of the 2nd counter (U3) is connected to the reception control module of device receiving end by the shielding synchronizing cable.
7. by the described pick-up unit of claim 3, it is characterized in that: described infrared ray receiver module comprises 4-7 operational amplifier (U4-U7), code translator (U8), digital regulation resistance (U9), wherein the infrared signal of the two-stage of the 4th operational amplifier (U4) amplification is connected to the 5th operational amplifier (U5), signal behind its limit filtration is by the 6th operational amplifier (U6) detection, and the signal after the detection exports the reception control module to through the 7th operational amplifier (U7) integration, shaping; Described code translator (U8) receives the output signal of control module, and output terminal links to each other with digital regulation resistance (U9).
8. by the described pick-up unit of claim 3, it is characterized in that: described reception control module comprises:
Microprocessor (MCU), microprocessor (MCU) storage inside has control program, and the read-write of control lock storage is by serial ports (U15) and host communication; By photoisolator (U16) trigger relay output detection signal;
1-3 latch (U10-U12) is communicated by letter with microprocessor (MCU) respectively, and the 1st latch (U10) receives the infrared received signal of phase inverter (U13); The 2nd latch (U11) output control infrared receiving Block decoder gating signal is controlled the digital regulation resistance sheet choosing of corresponding infrared receiving module, and is transferred its gain; The 3rd latch (U12) exports LCD (LED), display system duty to;
Code translator (U12), address decoding selects to output signal to 2-3 latch (U11-U12).
9. by the described pick-up unit of claim 3, it is characterized in that: described control program idiographic flow is: at first each register is carried out initialization, then device transmitting terminal and device receiving end are carried out communication test; If the whole normal communications of infrared transmission module and infrared receiving module enter the processing vehicle and pass through subroutine; When system communication is undesired, directly enter fault handling; In fault handling, judge system's processing of whether can demoting, if having at least two infrared receiving modules to break down, system does not enter the degradation tupe, triggers controlling alarm output; Otherwise system enters degradation and handles subroutine.
10. by the described pick-up unit of claim 9, it is characterized in that: described processing vehicle by the subroutine idiographic flow is: in the testing process that vehicle passes through, judge that infrared receiving module blocks quantity and whether can excite a photoisolator, if there is continuous at least infrared receiving block signal more than half to be blocked, photoisolator output is excited; Otherwise, regulate corresponding infrared receiving module gain, wherein, judge whether the infrared receiving module gain-adjusted is maximal value, if maximal value, system enters the fault handling subroutine, otherwise, withdraw from the processing vehicle and pass through subroutine.After photoisolator output is excited, judged whether that vehicle passes through, as long as there is an infrared receiving module to be blocked, systemic circulation is waited for, to the last an infrared receiving module is removed and is blocked, then detect the separation signal between two vehicles of walking, system withdraws from and handles vehicle and pass through subroutine.
11. by the described pick-up unit of claim 9, it is characterized in that: described degradation is handled subroutine and is referred to: the address of writing down out of order infrared receiving module, shield this address infrared receiving module signal not as blocking basis for estimation, whether judge that infrared receiving module blocks quantity can the exciting light electric isolator, if there is continuous at least infrared receiving block signal more than half to be blocked, photoisolator output is excited; Otherwise, regulate corresponding infrared receiving module gain, wherein, judge whether the infrared receiving module gain-adjusted is maximal value, if maximal value, system enters the fault handling subroutine, otherwise, withdraw from the processing vehicle and pass through subroutine.After photoisolator output is excited, judged whether that vehicle passes through, as long as there is an infrared receiving module to be blocked, systemic circulation is waited for, to the last an infrared receiving module is removed and is blocked, then detect the separation signal between two vehicles of walking, system withdraws from and handles vehicle and pass through subroutine.
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| CN2006101349763A CN101206769B (en) | 2006-12-22 | 2006-12-22 | Method for detecting infrared vehicle separation signal and device thereof |
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| CN2006101349763A CN101206769B (en) | 2006-12-22 | 2006-12-22 | Method for detecting infrared vehicle separation signal and device thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104517322A (en) * | 2014-12-24 | 2015-04-15 | 长安大学 | Infrared-based one-sided vehicle separation method and infrared-based one-sided vehicle separation device |
| CN106679779A (en) * | 2016-12-12 | 2017-05-17 | 北京万集科技股份有限公司 | Vehicle separation device fault detection method and system |
| CN109410480A (en) * | 2018-10-30 | 2019-03-01 | 恒银金融科技股份有限公司 | A kind of non-contact online infrared ray photoelectric sensor detecting instrument |
| CN110796753A (en) * | 2019-11-01 | 2020-02-14 | 山东中创软件工程股份有限公司 | Road vehicle detection device and detection method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434746Y (en) * | 2000-07-21 | 2001-06-13 | 北京易地平方信息技术有限公司 | Vehicle automatic classification device |
| CN2777516Y (en) * | 2005-03-02 | 2006-05-03 | 张曙光 | Two table top detector for weight metering charging and over limit of highway vehicle |
| CN100533073C (en) * | 2006-05-08 | 2009-08-26 | 金华市东方巨龙衡器有限公司 | Dynamic weighting system and method for vehicle |
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2006
- 2006-12-22 CN CN2006101349763A patent/CN101206769B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104517322A (en) * | 2014-12-24 | 2015-04-15 | 长安大学 | Infrared-based one-sided vehicle separation method and infrared-based one-sided vehicle separation device |
| CN106679779A (en) * | 2016-12-12 | 2017-05-17 | 北京万集科技股份有限公司 | Vehicle separation device fault detection method and system |
| CN106679779B (en) * | 2016-12-12 | 2019-04-12 | 北京万集科技股份有限公司 | A kind of Vehicles separation plant failure detection method and system |
| CN109410480A (en) * | 2018-10-30 | 2019-03-01 | 恒银金融科技股份有限公司 | A kind of non-contact online infrared ray photoelectric sensor detecting instrument |
| CN109410480B (en) * | 2018-10-30 | 2021-06-04 | 恒银金融科技股份有限公司 | Non-contact online infrared photoelectric sensor detector |
| CN110796753A (en) * | 2019-11-01 | 2020-02-14 | 山东中创软件工程股份有限公司 | Road vehicle detection device and detection method |
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| CN101206769B (en) | 2010-10-27 |
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