CN201795996U - Radar detecting device for vehicle on highway green channel - Google Patents
Radar detecting device for vehicle on highway green channel Download PDFInfo
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- CN201795996U CN201795996U CN2010201243262U CN201020124326U CN201795996U CN 201795996 U CN201795996 U CN 201795996U CN 2010201243262 U CN2010201243262 U CN 2010201243262U CN 201020124326 U CN201020124326 U CN 201020124326U CN 201795996 U CN201795996 U CN 201795996U
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Abstract
The utility model discloses a radar detecting device for a vehicle on a highway green channel, which comprises a first antenna supporting frame, a second antenna supporting frame, a first radar antenna, a second radar antenna, a single pole double throw switch, a radar host and a control computer. Through using the character that differences exist when electromagnetic waves radiated by a radar is transmitted through different media so as to detect whether a vehicle on the green channel carries forbidden objects, and through analyzing the received echo data of the vehicle, the radar detecting device judges whether the vehicle conforms to passing standards of the highway green channel. In addition, the radar detecting device for a vehicle on a highway green channel has the advantages of being quick in speed, capable of saving labor and time, accurate in detection and the like.
Description
Technical field
The utility model belongs to the The radar exploration technique field, is specifically related to the green channel Radar for vehicle checkout equipment on a kind of highway.
Background technology
In order to serve agriculture, rural areas and farmers, further reduce the transportation cost of fresh and live agricultural product, stablize the market price of agricultural product, increasing is to the support dynamics of agricultural production, Ministry of Communications's regulation, to the legal loading fresh and live agricultural product of the car load haulage vehicle that on " green channel " of the whole nation " five vertical two horizontal strokes " highway, travels, exempt from toll.
When national policy is supported agriculture, rural areas and farmers, the promotion people's livelihood, part green channel vehicle is but secured personal gain national policy, means such as utilization loads in mixture, camouflage, load a large amount of non-agricultural product at vehicle interior, the outside is only covered with a spot of fresh and live agricultural product, escapes to pay freeway toll, caused part high speed toll to run off, and this phenomenon is growing trend, has brought very big loss to country, has influenced the sound development of green channel policy.In order to ensure that country's " green channel " policy effectively carries out, reduce the loss of state-owned assets, must sternly hit the illegal activities that highway toll is paid in frauds escapes such as utilization loads in mixture, camouflage.
But freeway management department still lacks effective green channel vehicle detection means.The green channel vehicle detection mainly relies on manual method inspection at present.A kind of is to be entered by the staff to detect by an unaided eye in the compartment and the manual examination (check) goods.Concrete operations are, after the green channel vehicle to be tested that passes through stopped, the mobile staircase that the staff promotes to have wheel was to rear view of vehicle, and ascending stair enters in the compartment and checks, manually move a part of goods on surface in case of necessity, check whether there are the article that do not meet the current standard of green channel.This method checks that speed is slow, and staff's labour intensity is big.Big and goods is piled up when higher when carload, and staff's manual examination (check) can only be checked the goods top layer, is not easy to check the goods depths.And the staff can't enter inspection in the compartment when vehicle is filled fully, and therefore the check coverage rate of this method is low; Second kind is to use drill rod to detect, after the vehicle to be tested that passes through stops, the staff penetrates any part of a long drill rod that has spiral lamination from vehicle both sides or rear, extracts the back out and checks that whether the goods residue taken out of in the drill rod helicla flute is consistent with the feature of vehicle loading goods.This mode subjectivity is big, inspection speed is slow, labour intensity is big, and loss is very high, can play a role to jubilee wagon.But adopt the vehicle of carrying, load in mixture and pretend to evade toll secretly that container-type lorry large-scale, overlength is arranged, probing depth was far smaller than car length when drill rod can't insert from the both sides insertion and from the rear, and it is inoperative to the container-type lorry that drill rod is detected method.The drill rod method of detecting may produce certain destruction to shipping goods in addition, when adopting the drill rod method of detecting to detect to the green channel vehicle that transports high price, fragile agricultural product, tends to cause being discontented with of shipping driver.Therefore, the green channel check point is badly in need of a kind of nondestructiving detecting means fast and efficiently.
Known another kind is considering that the detection method of implementing is a hydrometer method.This method uses the embedded platform scale in ground to come check weighing, surveys complete vehicle weight when platform scale left by vehicle, and complete vehicle weight deducts the weight that the car body weight that obtains according to vehicle obtains the vehicle loading goods.Method with infrared acquisition can obtain the compartment volume then, goods weight and compartment volume are divided by and obtain a rate of specific gravity, the standard specific gravity value of this value and vehicle loading cargo type is compared, see whether both conform to, if difference is excessive, then the vehicle that decidable detected may load other type goods.But because the check weighing in this method dynamically carries out in the vehicle movement process, what obtain is an instantaneous weight value, all inequality to the possibility of result that same car repeatedly measured, so the measurement accuracy of goods weight can not guarantee; The sparse degree that dissimilar in addition goods is piled up is also different, and the space when some cargo type is placed in the compartment between individuality and the individuality is bigger, and the accumulation degree is sparse, as pumpkin; And other cargo types when in the compartment, placing the space between individuality and the individuality less, the accumulation degree is closely knit, as green pepper, the standard specific gravity value of lade type is difficult to given.And the green channel vehicle may be equipped with several different types of goods on a car in the reality when transportation, and this brings difficulty also for the accurate measurement of hydrometer method.
The method that can realize the inner structure lossless detection mainly contains ultrasonic Detection Method, X-ray check method and nuclear detection method.Ultrasonic detection method mainly utilizes hyperacoustic reflection, refraction effect to survey the unevenness of interior of articles, normally for surveying its discontinuous degree with a kind of medium even, compact structure, be used for metal defect detection more, and fresh and live agricultural product out-of-shape, accumulation degree are sparse, so the ultrasonic listening method is not suitable for agricultural product and detects; X-ray check method and nuclear detection method resolution height, imaging are directly perceived, but its equipment operation cost is high, and, poor stability strong to human body radiation, thereby also are difficult to be applied in the bigger highway of stream of people's traffic volume.
The utility model content
The utility model provides a kind of highway green channel Radar for vehicle checkout equipment in order to overcome the deficiency of above-mentioned existing checkout equipment and method.
The detections of radar method can realize the inner structure lossless detection.Electromagnetic wave can see through agricultural product transmission such as trees, vegetables and melon and fruit, and in the electromagnetic transmission process, fresh and live agricultural product has served as electromagnetic transmission medium.When electromagnetic wave is propagated in medium, its path, electromagnetic intensity and waveform will with electrical property and the geometric shape by medium change.Detections of radar equipment of the present utility model comes work according to electromagnetic this feature just.Electromagnetic variation difference reflects the interphase between occurrence patterns, size and the dielectric of dielectric, and in addition, the speed that electromagnetic wave is propagated in different medium there are differences, and different medium is also variant to absorption of electromagnetic wave and reflection potential.Different these features of the image that utilizes different medium to present in detections of radar equipment can detect the green channel vehicle and whether carry prohibited items secretly.
The highway green channel Radar for vehicle checkout equipment that the utility model provides comprises the first antenna support frame, the second antenna support frame, first radar antenna, second radar antenna, single-pole double-throw switch (SPDT), radar host computer and control computer.
The described first antenna support frame and the second antenna support frame all are used for placing radar antenna.Because the green channel vehicle generally is divided into two types in the open lorry in top and container-type lorry: be the metal plate washer around the compartment of the open lorry in top, open-top is also added a cover canvas; The container-type lorry is metal hermetic type compartment, and openable car door is left at the rear portion, compartment.When the open lorry in top is detected, use the first antenna support frame; When the container-type lorry is detected, use the second antenna support frame.The first antenna support frame is " door " font support; The second antenna support frame is the small handcart that has wheel, but the transverse arm of electric up-down is housed on the small handcart.Place first radar antenna on the first antenna support frame, placed second radar antenna on the second antenna support frame.
Described first radar antenna and second radar antenna are antennas of the same type, are made of transmitter and receiver, can transmit and receive electromagnetic wave simultaneously.The opening and closing of first radar antenna and second radar antenna and the setting of parameters are controlled by radar host computer.When first radar antenna or second radar antenna are started working, the transmitter in the antenna radar host computer emission continuous impulse signal under the given parameter, receiver receives echoed signal and also samples simultaneously, and the data after the sampling are returned to radar host computer.
First radar antenna is lifted on the centre position of the first antenna support frame, the mouth down launching electromagnetic wave, and the beam transmission direction is perpendicular to the ground, and the open lorry in top is detected; The cross bar and the column that constitute " door " font support of the first antenna support frame all are hollow, the cable that connects the first radar antenna control interface passes from the cross bar and the column centre of the first antenna support frame, and draws from a column bottom of the first antenna support frame; Second radar antenna is fixed on anchor clamps on the transverse arm of the second antenna support frame, and the container-type lorry is detected;
Be connected with the communication interface of radar host computer by single-pole double-throw switch (SPDT) with another cable from cable of the first radar antenna control interface, can detect the open lorry in top and these two kinds of type of vehicle of container-type lorry from the second radar antenna control interface; By changing the communication direction of single-pole double-throw switch (SPDT), radar host computer can switch at the row that taps into of first radar antenna and second radar antenna; When detecting the open lorry in top, select a communication direction of single-pole double-throw switch (SPDT), radar host computer is connected with first radar antenna; When detecting the container-type lorry, select another communication direction of single-pole double-throw switch (SPDT), radar host computer is connected with second radar antenna;
Select the correct communication direction of single-pole double-throw switch (SPDT) according to type of vehicle after, radar host computer is controlled the opening and closing of first radar antenna or second radar antenna, and given every radar antenna parameter; When first radar antenna or second radar antenna are started working, the transmitter of first radar antenna or second radar antenna is emission continuous impulse signal under the given radar antenna parameter of radar host computer institute, and the data after the receiver of first radar antenna or second radar antenna is sampled and will be sampled the echoed signal that receives simultaneously return to radar host computer;
After described radar host computer receives the parameter instruction and steering order of radar antenna of first radar antenna that control computer sends, the radar antenna parameter passed to first radar antenna and control the duty of first radar antenna; Simultaneously by the operation that on control computer, begins to preserve data He stop to preserve data, twice running time of radar host computer stored at interval in the echo data that received of first radar antenna; Radar host computer returns to control computer with the echo data that this first radar antenna is received subsequently, and does further data processing in control computer;
After described radar host computer receives the radar antenna parameter instruction and steering order of second radar antenna that control computer sends, the radar antenna parameter passed to second radar antenna and control the duty of second radar antenna; Simultaneously by the operation that on control computer, begins to preserve data He stop to preserve data, twice running time of radar host computer stored at interval in the echo data that received of second radar antenna; Radar host computer returns to control computer with the echo data that this second radar antenna is received subsequently, and does further data processing in control computer.
When the utility model detects the vehicle of highway green channel, utilize the relative motion of vehicle and radar antenna, obtain each regional echo data of interior.When the open lorry in top was detected, first radar antenna was motionless, the open lorry motion in top, and the motion of the open lorry in top is equivalent to the translation motion of first radar antenna itself.The centre position that first radar antenna is fixed on the first antenna support frame transmits, and when the open lorry in top passed through from first antenna support frame below, first radar antenna just can receive the radar return data of the open lorry various piece in top.When the container-type lorry is detected, the container-type lorry is motionless, the motion of second radar antenna, after the container-type lorry is static, the back door of container-type lorry is opened, moving the second antenna support frame locates to the back door, make second radar antenna that is fixed on the transverse arm aim at the interior of container-type lorry, and be positioned at the centre position of the both sides, compartment of container-type lorry, the lifting of transverse arm drives second radar antenna and also moves up and down, the radar return data of the compartment each several part of transmitted waveform simultaneously and receiver container formula lorry.This dual mode can be finished the detection to the whole filled medias of whole interior.
Connect the power supply that links to each other with 220 volts of power supplys of the power interface of radar host computer between described radar host computer and the control computer by universal serial bus (Universal Serial Bus abbreviates USB as) interface.
The operating system of opertaing device and deal with data is installed on the described control computer, can controls the operation of entire equipment, the echo data of admission vehicle is also handled and is stored.Be connected by USB interface between control computer and the radar host computer.Before vehicle detected, in the operation system interface on control computer, call existing radar antenna Parameter File, so that send correct radar antenna parameter to radar host computer according to the vehicle and the lade of current vehicle.
The utility model has made up different pick-up units to the open lorry in top with the container-type lorry respectively, targetedly the green channel vehicle is detected, during concrete the detection according to corresponding flow process at the enterprising line operate of control computer, finish the admission and the processing of vehicle echo data.
Before the vehicle echo data handled, equally also need different processing parameter templates to be set according to different vehicles and lade, therefore the corresponding different vehicles and the processing parameter template of lade will be set before detection, at first call correct processing parameter template during data processing, in control computer, echo data is analyzed and handled then, whether be entrained with prohibited items to detect vehicle.
Can also store and write down related data and information in the control computer, every detection finishes a car, all can be in a file in control computer with the license plate number name with the related data of this car and information stores, comprise the interface sectional drawing of vehicle echo data file, operating system in this document folder and write down the text of license plate number, radar antenna parameter and lade type.Can form a complete database of storage in time at last, the staff of being convenient to the green channel check point analyzes and record, simultaneously can also be for future reference.
Advantage of the present utility model is:
(1) the utility model utilizes radar equipment to detect the green channel vehicle and whether has carried prohibited items secretly, by the Radar for vehicle echo data that processing receives, judges whether vehicle meets the passed through standard of highway green channel;
(2) testing process of the present utility model has fast, the time saving and energy saving and detection high accuracy for examination of speed;
(3) can preserve information of vehicles after the utility model detects the green channel vehicle, form the complete database of storage in time, the staff of being convenient to the green channel check point analyzes and record, simultaneously can also be for future reference.
Description of drawings
Fig. 1 is the structural representation of the utility model highway green channel Radar for vehicle checkout equipment;
Fig. 2 is the utility model highway green channel Radar for vehicle checkout equipment control flow chart;
Fig. 3 is the fundamental diagram of the utility model highway green channel Radar for vehicle checkout equipment;
Fig. 4 is the utility model top open lorry pick-up unit synoptic diagram;
Fig. 5 is the utility model container-type lorry pick-up unit synoptic diagram.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The utility model is the equipment that the green channel vehicle of running on expressway is carried out detections of radar, as shown in Figure 1, this equipment comprises the first antenna support frame 1, the second antenna support frame 2, first radar antenna 3, second radar antenna 4, single-pole double-throw switch (SPDT) 5, radar host computer 6 and control computer 7.
The green channel vehicle is divided into 10 two types in the open lorry 8 in top and container-type lorry.In order to detect this vehicle of two types, need two different antenna support frames: the first antenna support frame 1 and the second antenna support frame 2.The described first antenna support frame 1 is " door " font support, and the second antenna support frame 2 is for having the small handcart of wheel, be equipped with on the small handcart can electric up-down transverse arm.The centre position of the first antenna support frame 1 has lifted first radar antenna 3, is used for the open lorry 8 in top is detected; Be placed with second radar antenna 4 on the transverse arm of the second antenna support frame 2, be used for container-type lorry 10 is detected.
Around open lorry 8 compartments, top is the metal plate washer, and open-top is also added a cover canvas, when the open lorry 8 in top is detected, uses " door " font first antenna support frame 1 that stands vertically on the ground.The first antenna support frame 1 the maximum height that highly is greater than the open lorry 8 in top is set, to guarantee that not only first radar antenna 3 has enough lifting spaces, also will make the open lorry 8 in top that passes through from the first antenna support frame, 1 below can not collide first radar antenna 3.The maximum height of the open lorry 8 in top is the distance of the peak of lade to ground, and is relevant with the lade kind with vehicle, determines as the case may be in the practical application.Container-type lorry 10 is metal hermetic type compartment, and openable car door is left at the rear, compartment, when container-type lorry 10 is detected, uses the second antenna support frame 2.The transverse arm adjustable height of the second dissimilar antenna support frames 2 may be different, must guarantee that transverse arm can rise to the maximum height of container-type lorry 10 when selecting small handcart.The maximum height of container-type lorry 10 is the distance of carriage top to ground, and is relevant with vehicle, determines as the case may be in the practical application.
Described first radar antenna 3 and second radar antenna 4 are the radar antenna of same type, are made of transmitter and receiver, are used for launching electromagnetic wave and receive echoed signal.First radar antenna, 3 mouth downs are lifted on the centre position of the first antenna support frame 1.The cross bar and the column that constitute " door " font support of the first antenna support frame 1 all are hollow, the cable that connects first radar antenna, 3 control interfaces passes from the cross bar and the column centre of the first antenna support frame 1, draws from a column bottom of the first antenna support frame 1.Second radar antenna, 4 usefulness anchor clamps are fixed on the transverse arm of the second antenna support frame 2.
Be connected by the communication interface of single-pole double-throw switch (SPDT) 5 with another cable from cable of first radar antenna, 3 control interfaces, thereby be able to the open lorry 8 in top and container-type lorry 10 these two kinds of purposes that type of vehicle detects from second radar antenna, 4 control interfaces with radar host computer 6.By changing the communication direction of single-pole double-throw switch (SPDT) 5, radar host computer 6 is switched at the row that taps into of first radar antenna 3 and second radar antenna 4.When detecting the open lorry 8 in top, select a communication direction of single-pole double-throw switch (SPDT) 5, radar host computer 6 is connected with first radar antenna 3; When detecting container-type lorry 10, select another communication direction of single-pole double-throw switch (SPDT) 5, radar host computer 6 is connected with second radar antenna 4.
Select the correct communication direction of single-pole double-throw switch (SPDT) 5 according to type of vehicle after, the opening and closing of radar host computer 6 control first radar antennas 3 or second radar antenna 4, and given every radar antenna parameter; When first radar antenna 3 or second radar antenna 4 are started working, the transmitter of first radar antenna 3 or second radar antenna 4 is decided emission continuous impulse signal under the radar antenna parameter at radar host computer 6, and the data after the receiver of first radar antenna 3 or second radar antenna 4 is sampled and will be sampled the echoed signal of receiving simultaneously return to radar host computer 6.
Communication interface, power interface and USB interface are arranged on the radar host computer 6.Communication interface links to each other with single-pole double-throw switch (SPDT) 5 by cable, is connected the power supply that links to each other with power supply of the power interface on the radar host computer 6 between radar host computer 6 and the control computer 7 by USB interface.After radar host computer 6 receives the parameter instruction and steering order of radar antenna of first radar antenna 3 that control computer 7 sends, the radar antenna parameter passed to first radar antenna 3 and control the duty of first radar antenna 3, receive the echo data that first radar antenna 3 receives simultaneously; After radar host computer 6 receives the parameter instruction and steering order of radar antenna of second radar antenna 4 that control computer 7 sends, the radar antenna parameter passed to second radar antenna 4 and control the duty of second radar antenna 4, receive the echo data that second radar antenna 4 receives simultaneously.
The operating system of opertaing device and deal with data is installed on the control computer 7, operates by the staff of green channel check point.Operating system is made up of control module 11, communication module 12 and processing module 13, the work of control module 11 control communication modules 12 and processing module 13.Control module 11 provides the radar antenna parameter for communication module 12 on the one hand, make communication module 12 send radar antenna parameter instruction and steering orders, the radar antenna parameter is passed to radar host computer 6 and control the duty of first radar antenna 3 and second radar antenna 4 to radar host computer 6; The echo data that returns of control module 11 control communication modules 12 receiving radar main frames 6 on the other hand, and echo data delivered in the processing module 13 handle.When detecting the green channel vehicle, preserve data and the operation that stops to preserve data by beginning in the control module 11, in radar host computer 6, obtain twice running time at interval in the echo data that received of first radar antenna 3 or second radar antenna 4, communication module 12 obtains echo data from radar host computer 6 under the control of control module 11, and pass to processing module 13 and do further data processing.
Control flow as shown in Figure 2, the complete procedure of once enrolling data is: control module 11 transmission radar antenna parameter instructions in the control computer 7 and steering order are to communication module 12, communication module 12 is passed to radar host computer 6 with the radar antenna parameter, and control radar main frame 6 unlatching first radar antenna 3 or second radar antennas 4, make it under correct radar antenna parameter, to begin launching electromagnetic wave; When the green channel vehicle passes through, motion state according to vehicle, control module 11 sends the steering order that begins to preserve data and stop to preserve data by communication module 12 to radar host computer 6, the echo data that twice at interval interior first radar antenna 3 of running time of radar host computer 6 preservations or second radar antenna 4 are received; Radar host computer 6 returns to communication module 12 with the echo data of preserving then, pass to processing module 13 by control module 11 again, and in processing module 13, the Radar for vehicle echo data that receives is carried out subsequent treatment, finally obtain the detection judged result whether this green channel vehicle is entrained with prohibited items, processing module 13 will detect judged result by providing in the operation system interface of control module 11 in control computer 7, for staff's reference of green channel check point.So far just formed a complete control flow.
Variation difference characteristic when the utility model utilizes electromagnetic wave to propagate in the medium of differing dielectric constant detects the green channel vehicle.When electromagnetic wave was propagated in conducting medium, penetration capacity was limited.The high more decay of conductivity is big more, and reflection is just strong more.When metal object is subjected to electromagnetic wave irradiation, will produce strong reflection.When electromagnetic wave passed the object of different conductivity, because reflection wave intensity difference, the radar return data had corresponding variation.Detect the green channel vehicle on this basis and whether be entrained with prohibited items.By measuring reflection echo and exomonental time delay, can also measure the height of prohibited items.
Detection method with the open lorry 8 in top is an example, and Fig. 3 is the fundamental diagram of detections of radar equipment.Suppose that having placed prohibited items in the compartment of the open lorry 8 in top to be detected is rectangular metal cabinet 9, what other parts were filled is vegetables.First radar antenna 3 is placed on the centre position of the first antenna support frame 1 when using detections of radar, the open lorry 8 in top was opened from first radar antenna, 3 belows, be equivalent to first radar antenna 3 above the open lorry 8 in actionless top towards the direction translation opposite with vehicle heading, with the time point that begins to enroll data is 0 constantly, and the antenna that solid line is represented among the figure is t in first radar antenna, the 3 translation processes
1Position constantly, this moment, the electromagnetic wave of emission shone directly at the bottom of the compartment, and the antenna that dotted line is represented is t in first radar antenna, the 3 translation processes
2Position constantly, the electromagnetic wave irradiation of emission this moment is to metal cabinet 9.Coordinate diagram above Fig. 3 has provided first radar antenna 3 at t
1And t
2Transmitted wave constantly is to the time interval of corresponding reception echo.At t
1In the time of constantly, radar beam sees through the camouflage vegetables, shines directly into the compartment metal base plate, and the echo of platform floor reflection is stronger.By measuring the delay τ of this strong reflection ripple
1, can calculate the height h of first radar antenna 3 to platform floor
1At t
2Constantly, radar beam sees through the camouflage vegetables, shines metal cabinet 9, also produces a strong reflection echo.This echo delay is τ
2, can calculate the height h of metal cabinet 9 to first radar antennas 3
2h
1And h
2Difference be the height of metal cabinet 9.
Because around the compartment of the open lorry 8 in top is the metal plate washer, open-top is also added a cover canvas, and first radar antenna 3 shines vehicle above vehicle during detection.Container-type lorry 10 is metal hermetic type compartment, has only the rear portion, compartment to leave openable car door, and radar shines interior at the carriage back door place during detection.These two types of vehicle detection device differences, and every type vehicle also comprised a lot of different vehicles, and vehicle difference then length, height even the structure of car all has very big difference, and the radar antenna parameter during detection may be all inequality.When the vehicle that loads different goods was detected, because electromagnetic wave attenuation coefficient difference, the transmitting gain of radar and receiving gain also will change, not so can influence follow-up data processing, if the attenuation coefficient of lade increases, transmitting gain and receiving gain increase thereupon, otherwise then reduce.Wherein, receiving gain will be arranged to nonlinear, because electromagnetic wave has decay in medium, this decling phase is non-linear for propagation distance, when the receiving radar echo,, receiving gain need be set radar return is amplified in order to compensate this decay, consider the nonlinear problem of decay, also need receiving gain is arranged to nonlinear when in the length range of receiver window, setting receiving gain.Can be in the scope of time of reception window when in the utility model receiving gain being set the manual adjustments segmented gain.Concrete operations are that whole time of reception window length evenly is divided into eight intervals, and different intervals can be provided with different yield values, and span is-30dB～50dB desirable arbitrary value in this scope.According to the time length of the reception echo delay in the practical application and different lade types, set each interval non-linear gain value, formed non-linear segmentation receiving gain.Because the decay difference of different lades, and the radar antenna parameter when the open lorry 8 in top and container-type lorry 10 detected has than big difference, should be provided with different non-linear segmentation receiving gains.Therefore at different vehicles and lade, set up the different radar antenna Parameter Files that comprises transmitting gain and receiving gain, before detecting, called.The radar antenna that is fit to different automobile types and lade type is transmitted and received parameter, be stored in respectively in the corresponding radar antenna Parameter File.When vehicle passes through, control computer 7 is transferred corresponding radar antenna Parameter File according to vehicle and lade, to radar host computer 6 sending controling instructions, radar host computer 6 control first radar antennas 3 and second radar antenna 4 are worked under correct radar antenna parameter and are enrolled data.
When vehicle data is handled, need corresponding processing parameter template be set according to different vehicles and lade equally, therefore to the processing parameter template of different vehicles and a correspondence of lade type stores, so that call during data processing.
Fig. 4 is the pick-up unit synoptic diagram of the open lorry 8 in top.As the open lorry 8 in top when first radar antenna, 3 belows are passed through, control computer 7 is at first transferred the radar antenna Parameter File according to vehicle and lade type, send radar antenna parameter instruction and steering order to radar host computer 6 then, make first radar antenna 3 before the open lorry 8 in top enters the antenna irradiation scope, begin launching electromagnetic wave, enroll echo data simultaneously, after the open lorry 8 in top is fully by first radar antenna, 3 ranges of exposures, stop launching electromagnetic wave, can obtain the radar return data of open lorry 8 various pieces in top this moment, the echo data of admission is returned to control computer 7, call corresponding processing parameter template, in processing module 13, carry out subsequent treatment.
Fig. 5 is the pick-up unit synoptic diagram of container-type lorry 10.When container-type lorry 10 passes through the green channel check point, after being stopped, container-type lorry 10 opens the back door, the second antenna support frame 2 is moved to the carriage back door place, adjust second radar antenna 4 to correct position, make it over against the interior transmitted waveform, and be positioned at the centre position of both sides, compartment.Control computer 7 is at first transferred the radar antenna Parameter File according to vehicle and lade type, send radar antenna parameter instruction and steering order to radar host computer 6 then, make second radar antenna, 4 beginning launching electromagnetic waves, control the lifting of transverse arm then, drive second radar antenna 4 and also move up and down carriage area admission echo data.Is a complete testing process with second radar antenna 4 from the motion that car body top moves to compartment bottom or moves to car body top from the bottom, compartment, can make second radar antenna 4 stop launching electromagnetic wave afterwards, obtain each regional radar return data of compartment at last.In testing process, need to keep second radar antenna, 4 uniform motion and can not stop, doing repeatedly elevating movement meeting as second radar antenna 4 in the testing process and prolong detection time, but can't influence subsequent treatment.Return to control computer 7 after having enrolled the echo data of carriage area, call corresponding processing parameter template, in processing module 13, carry out subsequent treatment.
The metal cabinet 9 of the dotted rectangle among Fig. 4 and Fig. 5 has been represented the prohibited items of carrying secretly, because the relative motion of the open lorry 8 in top and container-type lorry 10 and first radar antenna 3 and second radar antenna 4, the electromagnetic wave of first radar antenna 3 and 4 emissions of second radar antenna only arrives prohibited items in a period of time internal radiation, and echo data at this moment is variant with the echo data that does not shine prohibited items.After the green channel vehicle admission radar return data of passing through, echo data is sent to control computer 7, in processing module 13, carry out follow-up processing procedure, the radar return data image that obtains is analyzed and handled, whether be entrained with prohibited items to detect open lorry 8 in top and container-type lorry 10.At first call corresponding processing parameter template, under the given parameter value of processing parameter template, handle according to vehicle and lade type.Method with the search abnormal area can detect whether abnormal area is arranged in the compartment, may have prohibited items if abnormal area is arranged then show, can calculate the distributing position of the prohibited items of carrying secretly; Can also calculate the cargo loading volume fraction by the position of goods surface echo profile, not meet the vehicle of charging ratio requirement with examination.Carry secretly at last in position and the operation system interface of cargo loading volume fraction in control computer 7 and provide staff's reference of confession green channel check point.
Can also store data and the information relevant with detected vehicle in the control computer 7 in the utility model with record, every detection finishes a car, all can be in a file in control computer 7 with the license plate number name with related data and information stores, the data that not only have pair vehicle to enroll also comprise interface sectional drawing, detections of radar parameter and the lade type of license plate number, operating system.Form a complete database of storage in time at last, the staff of being convenient to the green channel check point analyzes and record, and for further improving of processing module 13 in the control computer 7 provides the basis, these data can also be for future reference simultaneously.
Claims (3)
1. highway green channel Radar for vehicle checkout equipment, it is characterized in that this equipment comprises the first antenna support frame (1), the second antenna support frame (2), first radar antenna (3), second radar antenna (4), single-pole double-throw switch (SPDT) (5), radar host computer (6) and control computer (7);
The described first antenna support frame (1) is " door " font support, and the second antenna support frame (2) is for having the small handcart of wheel, be equipped with on the small handcart can electric up-down transverse arm;
Described first radar antenna (3) and second radar antenna (4) are antennas of the same type, are made of transmitter and receiver, and launching electromagnetic wave also receives echoed signal; First radar antenna (3) is lifted on the centre position of the first antenna support frame (1), the mouth down launching electromagnetic wave, and the beam transmission direction is perpendicular to the ground, and the open lorry in top (8) is detected; The cross bar and the column that constitute " door " font support of the first antenna support frame (1) all are hollow, the cable that connects first radar antenna (3) control interface passes from the cross bar and the column centre of the first antenna support frame (1), and draws from a column bottom of the first antenna support frame (1); Second radar antenna (4) is fixed on anchor clamps on the transverse arm of the second antenna support frame (2), and container-type lorry (10) is detected;
Be connected by the communication interface of single-pole double-throw switch (SPDT) (5) with another cable from cable of first radar antenna (3) control interface, can detect the open lorry in top (8) and these two kinds of type of vehicle of container-type lorry (10) from second radar antenna (4) control interface with radar host computer (6); By changing the communication direction of single-pole double-throw switch (SPDT) (5), radar host computer (6) can switch at the row that taps into of first radar antenna (3) and second radar antenna (4); When detecting the open lorry in top (8), select a communication direction of single-pole double-throw switch (SPDT) (5), radar host computer (6) is connected with first radar antenna (3); When detecting container-type lorry (10), select another communication direction of single-pole double-throw switch (SPDT) (5), radar host computer (6) is connected with second radar antenna (4);
Select the correct communication direction of single-pole double-throw switch (SPDT) (5) according to type of vehicle after, the opening and closing of radar host computer (6) control first radar antenna (3) or second radar antenna (4), and given every radar antenna parameter; When first radar antenna (3) or second radar antenna (4) when starting working, the transmitter of first radar antenna (3) or second radar antenna (4) is emission continuous impulse signal under the given radar antenna parameter of radar host computer (6) institute, and the data after the receiver of first radar antenna (3) or second radar antenna (4) is sampled and will be sampled the echoed signal that receives simultaneously return to radar host computer (6);
After described radar host computer (6) receives the parameter instruction and steering order of radar antenna of first radar antenna (3) that control computer (7) sends, the radar antenna parameter passed to first radar antenna (3) and control the duty of first radar antenna (3); Simultaneously by the operation that on control computer (7), begins to preserve data He stop to preserve data, twice running time of radar host computer (6) stored at interval in the echo data that received of first radar antenna (3); Radar host computer (6) returns to control computer (7) with the echo data that this first radar antenna (3) is received subsequently, and does further data processing in control computer (7);
After described radar host computer (6) receives the radar antenna parameter instruction and steering order of second radar antenna (4) that control computer (7) sends, the radar antenna parameter passed to second radar antenna (4) and control the duty of second radar antenna (4); Simultaneously by the operation that on control computer (7), begins to preserve data He stop to preserve data, twice running time of radar host computer (6) stored at interval in the echo data that received of second radar antenna (4); Radar host computer (6) returns to control computer (7) with the echo data that this second radar antenna (4) is received subsequently, and does further data processing in control computer (7).
2. a kind of highway green channel Radar for vehicle checkout equipment according to claim 1 is characterized in that described radar host computer is equipped with communication interface, power interface and serial bus interface on (6); Communication interface links to each other with single-pole double-throw switch (SPDT) (5) by cable, is connected by serial bus interface between radar host computer (6) and the control computer (7), and the power interface on the radar host computer (6) links to each other with power supply.
3. a kind of highway green channel Radar for vehicle checkout equipment according to claim 1 is characterized in that, the operating system of opertaing device and deal with data is installed on the described control computer (7);
Described operating system is made up of control module (11), communication module (12) and processing module (13), the work of control module (11) control communication module (12) and processing module (13);
Control module (11) transmission radar antenna parameter instruction in the control computer (7) and steering order are to communication module (12), communication module (12) is passed to radar host computer (6) with the radar antenna parameter, and control radar main frame (6) unlatching first radar antenna (3) or second radar antenna (4), make first radar antenna (3) or second radar antenna (4) under correct radar antenna parameter, begin launching electromagnetic wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201243262U CN201795996U (en) | 2010-03-05 | 2010-03-05 | Radar detecting device for vehicle on highway green channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201243262U CN201795996U (en) | 2010-03-05 | 2010-03-05 | Radar detecting device for vehicle on highway green channel |
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| Publication Number | Publication Date |
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| CN201795996U true CN201795996U (en) | 2011-04-13 |
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| CN2010201243262U Expired - Fee Related CN201795996U (en) | 2010-03-05 | 2010-03-05 | Radar detecting device for vehicle on highway green channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594496A (en) * | 2018-12-10 | 2019-04-09 | 北京瑞达速通科技有限公司 | A kind of distribution microwave radar complexity vehicle is anti-to pound system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594496A (en) * | 2018-12-10 | 2019-04-09 | 北京瑞达速通科技有限公司 | A kind of distribution microwave radar complexity vehicle is anti-to pound system and method |
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