CN103149599B - A kind of highway green test passage vehicle cab avoidance system and method - Google Patents
A kind of highway green test passage vehicle cab avoidance system and method Download PDFInfo
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Abstract
A kind of highway green test passage vehicle cab avoidance system and method, comprise: first group of sensor node, second group of sensor node and the 3rd group of sensor node, often organize sensor node to be all made up of a pair light beam, often pair of light beam is provided with three pairs of optoelectronic switches; Ray generator and ray detector, controller; Controller carries out information of vehicles pre-service to vehicle, vehicle is divided into tractor-trailer and non-tractor-trailer, judging, drawing suitable opportunity by analyzing, and opens or closes ray generator.Solve the pilothouse Avoidance of highway green test passage tested vehicle, the safety of human pilot can be ensured, and efficiency is high, cost is low, practical.
Description
Technical field
The invention belongs to a kind of control system of highway green channel detection field and a kind of method of discrimination corresponding with it, particularly relate to a kind of highway green test passage pilothouse avoidance system and the preventing collision method corresponding with it.
Background technology
Country, for setting up smooth and easy, fresh agricultural product circulation network easily, has carried out the building-up work of highway green channel, for the vehicle meeting green channel requirement, toll has been exempted from enjoyment.But Some vehicles but secures personal gain national policy, the means such as utilization loads in mixture, camouflage, escape to pay freeway toll.For a green inspection to be open to traffic, be checked by artificial mode traditionally, this inspection method inefficiency, does not reach Checking on effect well yet.
The main method that current highway green channel detects has organoleptic method, tonnage laws, endoscope check method and nondestructive determination.Organoleptic method is mainly fixed against supervisory personnel and is detected by sense of touch, vision and sense of smell; Tonnage laws goes out equivalent density by the weight and Size calculation measuring vehicle, thus infers the general article of vehicle loading.There is the shortcoming that inspection speed is slow, person works's intensity is large, accuracy is low in these two kinds of methods, and cannot provide directly violation evidence.Endoscope check method can extend the sighting distance of people, and direction of visual lines can be changed arbitrarily, observe the real conditions of object inside surface exactly, check the article loaded in compartment, but endoscope check method still can increase the workload of inspector, and detect still more unilateral, just local location is detected, can not detect whole compartment.Non-Destructive Testing rule mainly adopts radar detection technique, actinoscopy X technology.Radar detection technique, due to can not penetrating metal, therefore has certain limitation in the application.And the penetration power of ray is very strong, therefore utilizes actinoscopy X technology to become the problem of hot research to Green Vehicle inspection, and have expert that the technology such as x-ray, Co-60 is applied to green channel vehicle automatic inspection system successively.Patent CN101532968A discloses a kind of vehicle check system for green channel.Radiographic source and ray detector are fixed on certain position by this patent, and the transmitted intensity utilizing ray detector to receive detects automatically to goods in car.The radiographic source that this patent uses is penetrated for Co-60 or X.Patent CN101943761A discloses a kind of detection method of X-ray.This patent can realize transmission plot and backward scattering figure merges, and enriches safety check image information further, and improve observation and the recognition efficiency of safety inspector, the radiation ray source that this patent can adopt is X ray.Patent CN202110299U discloses goods inspection system for vehicles on green channels.In addition, patent CN102508313A also discloses one and " detects the method and system of means of transport ", this patent utilization radiation source scans vehicle, the intensity of the hard radiation then received according to ray detector sets up grey scale curve, finally judges the type of vehicle institute cargo according to different gray threshold.
Although actinoscopy X technology is one nondestructiving detecting means fast and efficiently, the problem of existing green channel detection difficult can be solved well, but for the X ray generally used, gamma-rays and Co-60, use any ray all can damage human body.When ray shines directly into human body, although the radiant quantity of a radiation exposure is very little, along with radiation exposure number of times increase and accumulation will inevitably damage human body.Therefore, when actinoscopy X technology being applied to green channel and detecting, the personal safety of driver and conductor in pilothouse must be ensured.In view of above reason, must pilothouse be avoided when using roentgenoscopeX to detect green currency car, only loading space being detected.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of accurate, efficient, real-time highway green test passage pilothouse avoidance system and method, reduces or avoids ray to the damage of personnel.
A kind of highway green test passage vehicle cab avoidance system, pilothouse avoidance system comprises: first group of sensor node, second group of sensor node and the 3rd group of sensor node, often organize sensor node to be all made up of a pair light beam, often pair of light beam is provided with three pairs of optoelectronic switches; Ray generator and ray detector, ray detector is used for receiving the ray that sends of ray generator; Controller, receives the level skip signal often organizing optoelectronic switch in sensor node, show that vehicle is in the position of surveyed area and speed, judges pilothouse, position relationship between container and ray generator, the opening and closing of control ray generator; First group of sensor node, second group of sensor node and the 3rd group of sensor node are arranged in order along the direction of the admission passage of vehicle, ray generator and ray detector are arranged between second group of sensor node and the 3rd group of sensor node, and near second group of sensor node.
Preferred as one, often pair of light beam is all provided with three pairs of optoelectronic switches, is followed successively by optoelectronic switch one, optoelectronic switch two and optoelectronic switch three from top to bottom; Be spaced apart 0.3 meter between optoelectronic switch, optoelectronic switch one is 1.7-2 rice apart from the height on ground.
Preferred as one, distance between first group of sensor node and second group of sensor node is 2.5-3 rice, spacing between second group of sensor node and the 3rd group of sensor node is 2.5-3 rice, and the spacing of second group of sensor node and ray generator is 0.4-0.8 rice.
Preferred as one, optoelectronic switch one is 1.9 meters apart from the height on ground.
Preferred as one, distance between first group of sensor node and second group of sensor node is 2.8 meters, spacing between second group of sensor node and the 3rd group of sensor node is 2.7 meters, and the spacing of second group of sensor node and ray generator is 0.5 meter.
A kind of highway green test passage vehicle cab preventing collision method, step one: vehicle needs to enter green channel vehicle detection region with the speed of a motor vehicle of 5-10 kilometer per hour, when vehicle runs over some light beams, all optoelectronic switches on light beam are all in off-state, and sensor node becomes output low level from output high level; Controller accepts the signal of sensor node, judges vehicle speed within a detection region and position; Step 2: information of vehicles pre-service is carried out to vehicle by first group of sensor node and second group of sensor node, vehicle is divided into " tractor-trailer " and " non-tractor-trailer ", when tested vehicle cab front portion arrives second group of sensor node, if first group of sensor node is in on-state, then judge that detected vehicle is as tractor-trailer; If first group of sensor node is in its unaccessed state, then judge that tested vehicle is as non-tractor-trailer; Step 3: if vehicle is tractor-trailer, judges the relative position of vehicle loading front end and second group of sensor node and the relative position of vehicle loading afterbody and second group of sensor node; If detected vehicle is non-tractor-trailer, judge the relative position of vehicle loading front end and the 3rd group of sensor node and the relative position of vehicle loading afterbody and second group of sensor node; Vehicle cab front end drives to time of second group of sensor node from first group of sensor node and average velocity is respectively T1 and V1; Time of the 3rd group of sensor node is driven to and average velocity is respectively T2 and V2 from second group of sensor node; Goods carriage of trucks afterbody drives to time of second group of sensor node from first group of sensor node and average velocity is respectively T3 and V3; Step 4: if vehicle is tractor-trailer, when pilothouse front portion arrives after the 3rd group of sensor node, and when continuing to wait until that vehicle loading front end arrives second group of light beam, after time delay 0.5/V2 second, opens ray generator; If detected vehicle is non-tractor-trailer, after vehicle cab front portion arrives the 3rd group of sensor node, directly open ray generator; No matter being tractor-trailer, is also non-tractor-trailer, after vehicle loading afterbody arrives second group of sensor node, after time delay 0.5/V3 second, closes ray generator.
Preferred as one, if ray generator is opened, when tested vehicle loading is completely by after surveyed area, controller could not receive normal end signal, now hard closing ray generator.
Preferred as one, when tested vehicle loading is by surveyed area, vehicle is parked in surveyed area, if need hard closing ray generator, by completing manually.
Preferred as one, the upper limit that ray generator is opened into shut-in time interval is 25 seconds.
Useful technique effect:
Can know and detect vehicle in the position of surveyed area, the opportunity that ray generator opens and closes can be held more accurately and efficiently, that is: when pilothouse is by the emission port of ray generator, open X-ray machine X when compartment arrives the emission port of ray generator, close ray generator when the tailstock sails out of ray generator emission port.This avoidance system and method are applied in highway green channel detection system and can process pilothouse Avoidance well, ensure that whole testing process only scans goods carriage of trucks part, avoid ray to driver.
Accompanying drawing explanation
Fig. 1 is the highway green test passage pilothouse avoidance system of the embodiment of the present invention;
Fig. 2 is the structural drawing of the sensor node of the embodiment of the present invention;
Fig. 3 is the lorry pick-up unit schematic diagram of the embodiment of the present invention;
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.Below describe only for illustration of the present invention, but be not used to limit the scope of the invention.
A kind of highway green test passage vehicle cab avoidance system and method are as shown in Figure 1, specifically comprise 6 parts: first group of sensor node, 101, second group of sensor node the 102, three group of sensor node 103, ray generator 104, ray detector 105 and controller 106.Often organize sensor node to be all made up of a pair light beam, light beam is provided with three pairs of optoelectronic switches; Controller 106 obtains level signal or level skip signal by often organizing the break-make of optoelectronic switch in sensor node, carry out reasoning and correlation computations again, and then draw position and the state of vehicle discrepancy surveyed area, only have when truck cab is completely by ray generator 104 emission port, and just start ray generator 104 during loading space arrival ray generator 104 emission port, close ray generator 104 when goods carriage of trucks crosses ray generator 104 emission port completely.
Preferred as one, that ray generator 104 is launched is X ray, gamma-rays or Co-60.
In described avoidance system, the structure of three groups of sensor nodes is identical, the structural drawing of sensor node as shown in Figure 2, wherein, often organize sensor node to be all made up of a pair light beam, be respectively transmitting terminal light beam 201 and reflection end light beam 202, light beam is all provided with three pairs of optoelectronic switches, is followed successively by optoelectronic switch 1, optoelectronic switch 2 204 and optoelectronic switch 3 205 from top to bottom.The installation of optoelectronic switch needs to keep suitable height, and as the preferred height of one, the height arranging optoelectronic switch 1 distance ground is 1.9 meters, and optoelectronic switch 3 204 is 1.6 meters apart from the height on ground, and optoelectronic switch 3 205 is 1.3 meters apart from the height on ground.
Spacing in described avoidance system between three groups of sensor nodes and ray generator 104 needs to arrange suitable spacing, by measuring the actual measurement of a large amount of green channel vehicle dimension, distance between first group of sensor node and second group of sensor node is 2.5-3 rice, spacing between second group of sensor node and the 3rd group of sensor node is 2.5-3 rice, and the spacing of second group of sensor node and ray generator is 0.4-0.8 rice.Preferred as one, final spacing is set to: the distance between first group of sensor node 101 and second group of sensor node 102 is 2.8 meters, spacing between second group of sensor node 102 and the 3rd group of sensor node 103 is 2.7 meters, second group of sensor node 102 is 0.5 meter with the spacing of ray generator 104, and ray generator 104 is arranged between second group of sensor node 102 and the 3rd group of sensor node 103.
The lorry pick-up unit schematic diagram of a kind of highway green test passage pilothouse avoidance system and method as shown in Figure 3.First lorry needs to travel according to rate request, with the speed of a motor vehicle of 5-10 kilometer per hour by green channel vehicle detection region.When lorry does not arrive surveyed area, all electric switches on light beam are all in on-state, and sensor node exports high level; When lorry runs over some light beams, all optoelectronic switches on light beam are all in off-state, sensor node output low level; When light beam by on-state to off-state or by off-state to on-state, sensor node output level will produce saltus step.In the process that lorry travels at surveyed area, the level signal that three groups of light beams produce and skip signal are that avoidance system provides signal source.The signal source that controller 106 is produced by light beam, carries out pre-service to lorry information, and judges lorry relative position within a detection region.
Carry out analytic statistics to the lorry by highway green test passage, lorry is divided into " tractor-trailer " and " non-tractor-trailer " two types by highway green test passage pilothouse avoidance system.The maximum difference of the vehicle of this two type is exactly that the container of mounting is different from the spacing between pilothouse, the container that " tractor-trailer " mounts and pilothouse have 70---the spacing of 200cm, " non-tractor-trailer " spacing between container and pilothouse is then very little, can not more than 30cm, therefore this just determines in the process in the tested vehicle passing detection region of this two type, and the logic that ray generator 104 is opened is different.Determine that the type of lorry accurately realizes the prerequisite that pilothouse dodges.Lorry information pre-processing can be carried out to lorry by first group of sensor node 101 and second group of sensor node 102, lorry is divided into " tractor-trailer " and " non-tractor-trailer ".When tested truck cab 107 front portion arrives second group of sensor node 102, if first group of sensor node 101 is in on-state, then judge that detected vehicle is as " tractor-trailer "; If first group of sensor node 101 is in its unaccessed state, then judge that tested lorry is as " non-tractor-trailer ".On basis lorry being divided into " tractor-trailer " and " non-tractor-trailer ", need the relative position determining truck cab and goods carriage of trucks and ray generator 104 further.The signal that controller 106 provides according to three groups of sensor nodes carries out reasoning and calculating, obtains the relative position of truck cab and goods carriage of trucks and ray generator 104 emission port and the lorry speed in the traveling of surveyed area.If lorry is " tractor-trailer ", then need to judge the relative position of goods carriage of trucks front end and second group of sensor node 102 and the relative position of goods carriage of trucks 108 afterbody and second group of sensor node 102; If detected vehicle is " non-tractor-trailer ", then need to judge the relative position of goods carriage of trucks front end and the 3rd group of sensor node 103 and the relative position of goods carriage of trucks afterbody and second group of sensor node 102.Truck cab front end drives to time of second group of sensor node 102 from first group of sensor node 101 and average velocity is respectively T1 and V1; Time of the 3rd group of sensor node 103 is driven to and average velocity is respectively T2 and V2 from second group of sensor node 102; Goods carriage of trucks afterbody drives to time of second group of sensor node 102 from first group of sensor node 101 and average velocity is respectively T3 and V3 etc.
Determining lorry on the basis of the relative position of surveyed area, the opening and closing of ray generator 104 can controlled better.If lorry is " tractor-trailer ", when pilothouse front portion arrives after the 3rd group of sensor node 103, and when continuing to wait until that goods carriage of trucks front end arrives second group of light beam, after time delay 0.5/V2 second, open ray generator 104; If detected vehicle is " non-tractor-trailer ", after truck cab front portion arrives the 3rd group of sensor node 103, directly open ray generator 104; No matter be " tractor-trailer " or " non-tractor-trailer ", after goods carriage of trucks afterbody arrives second group of sensor node 102, after time delay 0.5/V3 second, close ray generator.
Increasing different time delays in the moment that ray generator 104 opens and closes is because there is gap between second group of sensor node and ray generator 104, such process is to ensure when the speed of a motor vehicle is uneven, no matter be open ray generator 104 after " tractor-trailer " or " non-tractor-trailer " all can accurately avoid pilothouse, ray generator 104 can be closed after the tailstock sails out of ray generator 104 completely again.
In order to the use X-ray Testing Technology of safety, must open until the time interval of closing limits to ray generator 104, the upper limit T at setting ray generator 104 opening time interval
lim.If ray generator 104 is opened, when tested goods carriage of trucks is completely by after surveyed area, controller 106 could not receive normal end signal, now needs hard closing ray generator 104; When tested goods carriage of trucks is by surveyed area, vehicle is parked in surveyed area, now also needs to consider hard closing ray generator 104, also by completing manually; It can thus be appreciated that, the upper limit T that ray generator 104 is opened into shut-in time interval is set
limvery necessary.After test mass data, detected vehicle normally crosses the time of surveyed area mostly within 20s, therefore forces to set interval upper limit T
limfor 25s.
The headstock that highway green channel provided by the present invention detects dodges control system, for green channel detection system, utilizes x radiation x imaging technique to carry out the problem of harmless quick inspection to enclosed vehicle, devises a headstock and dodge control system.This control system has adopted the mode of operation of Automatic Control, the position of sailing vehicle into is reasonably judged, show that vehicles while passing enters the state of surveyed area, when compartment just starts ray by during principal ray, close ray when compartment crosses principal ray completely, guarantee only to detect position, compartment.After ray is opened, if Vehicle Speed is slowly or when being parked in surveyed area, controller can after ray opens certain hour hard closing ray, ensure security.Whole system can judge to detect vehicle in the state of surveyed area very well, can avoid headstock, only scan position, compartment, can reduce or avoid to cause unnecessary injury to driver during detection.
The above is only the preferred embodiment of the present invention; just exemplary preferred embodiment of the present invention described herein; and employ concrete term description the preferred embodiments of the present invention; but this description is only for example object; those skilled in the art should be noted that disclosed by the invention is only example; and should be appreciated that and can make various change and change, and do not depart from the protection domain of the claims in the present invention.
Claims (4)
1. a highway green test passage vehicle cab preventing collision method, is characterized in that:
Step one: vehicle needs to enter green channel vehicle detection region with the speed of a motor vehicle of 5-10 kilometer per hour, described surveyed area comprises first group of sensor node, second group of sensor node and the 3rd group of sensor node that the direction along the admission passage of vehicle is arranged in order, often organize sensor node to be all made up of a pair light beam, often pair of light beam is provided with three pairs of optoelectronic switches; When vehicle runs over light beam, all optoelectronic switches on light beam all become off-state from on-state, and sensor node becomes output low level from output high level; The signal of controller receiving sensor node, judges vehicle speed within a detection region and position;
Step 2: information of vehicles pre-service is carried out to vehicle by first group of sensor node and second group of sensor node, vehicle is divided into tractor-trailer and non-tractor-trailer, when tested vehicle cab front portion arrives second group of sensor node, if first group of sensor node is in on-state, then judge that detected vehicle is as tractor-trailer; If first group of sensor node is in off-state, then judge that tested vehicle is as non-tractor-trailer;
Step 3: if vehicle is tractor-trailer, judges the relative position of vehicle loading front end and second group of sensor node and the relative position of vehicle loading afterbody and second group of sensor node; If detected vehicle is non-tractor-trailer, judge the relative position of vehicle loading front end and the 3rd group of sensor node and the relative position of vehicle loading afterbody and second group of sensor node; Vehicle cab front end drives to time of second group of sensor node from first group of sensor node and average velocity is respectively T1 and VI; Time of the 3rd group of sensor node is driven to and average velocity is respectively T2 and V2 from second group of sensor node; Vehicle loading afterbody drives to time of second group of sensor node from first group of sensor node and average velocity is respectively T3 and V3;
Step 4: be provided with ray generator and ray detector between second group of sensor node and the 3rd group of sensor node, is used for transmitting and receiving ray; If vehicle is tractor-trailer, when pilothouse front portion arrives after the 3rd group of sensor node, and when continuing to wait until that vehicle loading front end arrives second group of light beam, after time delay 0.5/V2 second, open ray generator; If detected vehicle is non-tractor-trailer, after vehicle cab front portion arrives the 3rd group of sensor node, directly open ray generator; No matter being tractor-trailer, is also non-tractor-trailer, after vehicle loading afterbody arrives second group of sensor node, after time delay 0.5/V3 second, closes ray generator.
2. a kind of highway green test passage vehicle cab preventing collision method according to claim 1, it is characterized in that: if ray generator is opened, when tested vehicle loading is completely by after surveyed area, controller could not receive normal end signal, now hard closing ray generator.
3. a kind of highway green test passage vehicle cab preventing collision method according to claim 1 and 2, it is characterized in that: when tested vehicle loading is by surveyed area, vehicle is parked in surveyed area, if need hard closing ray generator, by completing manually.
4. a kind of highway green test passage vehicle cab preventing collision method according to claim 3, is characterized in that: the upper limit that ray generator is opened into shut-in time interval is 25 seconds.
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| CN103645473B (en) * | 2013-12-27 | 2016-01-13 | 吉林大学 | Highway Channels dynamic vehicle method for detecting vehicle speed |
| CN104950338B (en) * | 2014-03-24 | 2020-11-24 | 北京君和信达科技有限公司 | System and method for radiation inspection of moving objects |
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| GB201503855D0 (en) | 2015-03-06 | 2015-04-22 | Q Free Asa | Vehicle detection |
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| CN106124533A (en) * | 2016-08-30 | 2016-11-16 | 北京华力兴科技发展有限责任公司 | Rapid detection system |
| CN106249309A (en) * | 2016-08-31 | 2016-12-21 | 无锡日联科技股份有限公司 | A kind of X-ray transmission formula green channel detecting system |
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| CN107228868A (en) * | 2017-06-29 | 2017-10-03 | 北京君和信达科技有限公司 | Radiation checking system and radiation testing method |
| CN108535138B (en) * | 2018-05-04 | 2024-04-16 | 鹤壁昊海电气有限公司 | Specific gravity detection device and method for green channel vehicle |
| CN109188544B (en) * | 2018-09-17 | 2021-05-11 | 重庆日联科技有限公司 | Vehicle detection system |
| CN109471187B (en) | 2019-01-04 | 2024-04-02 | 清华大学 | Scanning inspection system and scanning inspection method |
| CN110055915A (en) * | 2019-04-28 | 2019-07-26 | 重庆日联科技有限公司 | A kind of small boot rays safety detection apparatus |
| CN113791459B (en) * | 2020-05-29 | 2022-11-01 | 同方威视技术股份有限公司 | Security check equipment debugging method and device, and security check method and device |
| CN114764074A (en) * | 2020-12-31 | 2022-07-19 | 同方威视技术股份有限公司 | Radiation inspection system and radiation inspection method |
| CN113805251A (en) * | 2021-08-25 | 2021-12-17 | 北京营加品牌管理有限公司 | Method for detecting trailer towing state of motor home |
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