CN205263308U - Violated quality control of green channel surveys system - Google Patents
Violated quality control of green channel surveys system Download PDFInfo
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- CN205263308U CN205263308U CN201520945568.0U CN201520945568U CN205263308U CN 205263308 U CN205263308 U CN 205263308U CN 201520945568 U CN201520945568 U CN 201520945568U CN 205263308 U CN205263308 U CN 205263308U
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Abstract
The utility model provides a violated quality control of green channel surveys system, includes radar detection device and PC processor, the radar detection device includes transmitter, receiver and antenna element, PC treater control transmitter is through a set of utmost point burst pulse cluster of antenna element transmission to through receiver admission echo, thus awaited measuring article the one -dimensional distance like data signal, the PC processor pair data signal handle, gives measurement personnel with image display. The utility model discloses can distinguish the monosodium glutamate article that the green channel article that satisfy the regulation reached unsatisfied regulation voluntarily, can carry out the microwave formation of image to freight train car substance in vivo, can pass through the image, provide the suggestion of the inspection of whether further unpacking voluntarily, possess complete self test and self calibration function.
Description
Technical field
The utility model relates to contraband detection system, is specifically related to a kind of green channel contraband detection system.
Background technology
China is large agricultural country, wherein the status of fresh and live agricultural product in people's life is even more important, smooth and easy in order to set up, convenient, the distribution network of agricultural product efficiently, support fresh and live agricultural product transportation and sales, promote increasing peasant income, according to the requirement of State Council, Ministry of Communications, the Ministry of Public Security, the Ministry of Agriculture, State Development and Reform Commission, the Ministry of Finance, Office for Rectifying Unhealthy Tendencies of State Council combines and has formulated vehicle that " scheme is constructed and implemented in national high efficiency fresh and live agricultural product circulation " green channel " " [road of handing over to the collective or the state is sent out [2005] No. 20] regulation is equipped with fresh and live agricultural product and walk highway " green channel " and exempt from pass cost. although " green channel " policy has promoted agriculture development, but simultaneously due to interests temptation, personation " green channel " vehicle in part transport vehicle family is evaded pass cost, brings massive losses to highway operator, has had a strong impact on the healthy and stable development of green channel operation work.
And current green channel vehicle inspection difficulty, implement management method regulation by green channel: the vehicle of the legal loading transport fresh and live agricultural product of car load (reach this lorry and appraise and decide mounted mass or more than 80% the calculating by car load of struck capacity), could enjoy green channel preferential policy. And fresh and live agricultural product haulage vehicle generally through layer by layer parcel, especially vegetables, fruits product, external packing is more tight. When toll collector checks, can only see sub-fraction goods, be difficult to accurately judge. And cheating vehicle is on the increase, many illegal driver car owners utilize green channel policy, take camouflage, personation green channel vehicle, pretend goods surface coverage one deck vegetables, or the little a part of vegetables of empty wagons return transport. Especially container vehicle: the fresh and live agricultural product vehicle of calling oneself is impaired for preventing goods, refusal checks. Utilize green channel to escape leak pass cost behavior and just slowly develop into a kind of groups phenomenon by individual behaviour.
In view of this, need now a kind of effective method badly, the vehicle interior loaded with articles through green channel is checked, identify and wherein whether be entrained with contraband.
In the prior art, often use hydrometer method, core detection method and X ray detection method to detect. But the detection method of prior art is all not enough to some extent.
The operation principle of hydrometer method is, after the volume of input vehicle institute transporting cargo (according to the product of on-the-spot actual measurement institute cargo length, width, height), go out the weight of goods according to the density analysis of the article that transport of grasping, add light weight (according to the data on driver's trip ticket), then calculate lorry gross mass, the data of weighing with the rear car goods gross weight of weighing contrast, if find the soil 5% exceeding, show that this car is mounted with problem, need further check. Hydrometer method detects subject matter: know car body volume difficulty, volume measuring system complexity; There is no direct imaging data, unpack and be based on insufficient grounds; Resolution ratio is poor; Inspection speed is slow.
The operation principle of core detection method is: utilize x radiation x image-forming principle, the fan ray that radiographic source sends penetrates closure compartment and inner goods, is received by opposite side detector. Due to article different parts density difference, therefore the degree of absorption difference to ray, the signal power of detector output is also different, by signals different power through image process after, be presented on computer screen, just form profile and the form of vehicle interior article, checked with regard to loaded with articles in known closure compartment by sight line. The advantage of core detection method is: inspection speed is fast, simple to operate, and reliability is high, penetrable metal. And the shortcoming of core detection method is: system adopts cobalt-60 defectoscope to make radiation source, easily causes radiation residual, and people is had to radiation to the bad control of dosage and the improper use that use; Cost is high, the cost of a set of need units up to a million.
The operation principle of X ray detection method is: the ray that system is sent by radiographic source carries out quick nondestructive scanning imaging to vehicle, and recycling special-purpose computer carries out graphical analysis and processing, and the state of traffick is judged. The same with core detection method, its advantage is that resolution ratio is high, and imaging is directly perceived, can penetrate 100mm steel plate. Its shortcoming is: adopt equipment, the operation and maintenance cost of X ray high, and harmful; Cost is high.
Utility model content
For the deficiencies in the prior art, the utility model discloses a kind of green channel contraband detection system based on the radar exploration technique.
The technical solution of the utility model is as follows:
A kind of green channel contraband detection system, comprises radar detection apparatus and PC processor; Described radar detection apparatus comprises emitter, receiver and antenna element; Described emitter comprises circuits for triggering and nanosecond pulse maker; Described receiver comprises fpga chip, A/D sampling module, LNA and step-by-step impulse generator; Described antenna element comprises circulator and the radiating antenna being connected with described circulator; Described circulator comprises receive path and transmission channel;
The input of described nanosecond pulse maker is connected with fpga chip by circuits for triggering; The output of described nanosecond pulse maker connects the transmission channel of circulator by cable; The input of described LNA connects the receive path of circulator, and the output of LNA connects the input of A/D sampling module, and the output of described A/D sampling module connects fpga chip; The input of described step-by-step impulse generator connects fpga chip, and output connects A/D sampling module;
Described PC processor comprises PCI communication card and multiple external system coupling port; Described PC processor is connected with the fpga chip in described radar detection apparatus by PCI communication card;
Its further technical scheme is that described radar detection apparatus is hand-held radar detection apparatus and/or fixed type radar sniffer.
Useful technique effect of the present utility model is:
A) can meet the green channel article of regulation and not meet the contraband specifying by automatic distinguishing;
B) can carry out microwave imaging to material in truck body;
C) can pass through image, automatically provide the whether further suggestion of OOBA;
D) can preserve microwave imaging result, as the evidence before OOBA;
E) system possesses automation measuring ability;
F) system possesses complete detection certainly and self-calibration function.
Table 1 the utility model is with respect to the performance comparison of several prior aries
As can be seen from Table 1, green channel contraband detection system and the detection method thereof based on detections of radar method described in the utility model has obvious advantage at each aspect of performance.
The utility model adopts detections of radar method principle, and green channel contraband is detected, and realizes the detection system of a set of reasonable, for retrieving national loss, hits and breaks laws and commit crime, and the protection peasant common people's just rights and interests afford due responsibility.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is the detection schematic diagram for open car.
Fig. 3 is the detection schematic diagram for container car.
Detailed description of the invention
Fig. 1 is schematic diagram of the present utility model. The utility model comprises radar detection apparatus and PC processor.
Radar detection apparatus comprises emitter 1, receiver 3 and antenna element 2.
Emitter 1 comprises circuits for triggering 11 and nanosecond pulse maker 12. Receiver 3 comprises fpga chip 31, A/D sampling module 32, LNA 33 and step-by-step impulse generator 34. Antenna element 2 comprises circulator 21 and the radiating antenna 22 being connected with circulator 21, and circulator 21 comprises transmission channel and accepts passage.
The input of nanosecond pulse maker 12 is connected with fpga chip 31 by circuits for triggering 11. The output of nanosecond pulse maker 12 connects the transmission channel of circulator 21 by cable.
The input of LNA 33 connects the receive path of circulator 21. The output of LNA 33 connects the input of A/D sampling module 32, and the output of A/D sampling module 32 connects fpga chip 31. The input of step-by-step impulse generator 34 connects fpga chip 31, and output connects A/D sampling module 32.
Radar detection apparatus can be hand-held radar detection apparatus, is also fixed type radar sniffer. If radar detection apparatus is fixed type radar sniffer, also comprise fixed installation annex, for radar detection apparatus is arranged on to portal frame. If radar detection apparatus is hand-held radar detection apparatus, also comprise that hand held structures part, hand-held radar detection apparatus are arranged on hand held structures part, for hand-held. Hand-held radar detection apparatus and fixed type radar sniffer use as required in different occasions, or also can be used in conjunction with.
PC processor in the utility model comprises PCI communication card and multiple external system coupling port. Outside coupling port can be the serial ports of USB interface, Ethernet interface or other network equipments. PC processor is connected with the fpga chip 31 in described radar detection apparatus by PCI communication card.
The composition list and the function list that form hardware components of the present utility model are as shown in table 2:
Composition list and the function list of table 2 system hardware
The method that uses the utility model to carry out contraband detecting comprises the following steps:
Step 1, user are by PC processor sending controling instruction;
Control instruction is transferred to fpga chip 31 by step 2, PC processor, and fpga chip 31, by control triggering electric circuit 11, is opened nanosecond pulse maker 12 and also produced one group of transmitted pulse, by cable transmission to circulator 21;
Step 3, circulator 21 send transmitted pulse to radiating antenna 22 by transmitting path, and transmitted pulse signal amplitude is shot out;
Step 4, run into article back reflection when transmitted pulse; Radiating antenna 22 receives reflected signal, and is transferred to circulator 21; The receiving path of circulator 21 receives reflected signal, and is transferred to receiver 3;
Step 5, receiver 3 amplify signal by LNA 33; Then by A/D sampling module 32, analog signal is sampled as to data signal; Data signal via fpga chip 31 pretreatment after, send PC processor to; Step-by-step impulse generator 34 receives the control signal of fpga chip 31, and to A/D sampling module 32 transmitted information, controls the sampling period;
Step 6, PC processor pair data signal are carried out signal processing and image processing;
Result is presented to user by step 7, PC processor. Result comprise original image, after treatment can recognition image, entrainment warning mark.
Below with two embodiment, system described in the utility model and detection method are described.
Embodiment 1, for the detection of open car. Fig. 2 is the detection schematic diagram for open car.
Open car testing process is as follows:
1) vehicle to be checked sails surveyed area into, and stops;
2) fixed type radar sniffer is fixed on portal frame top, and testing staff starts fixed type radar sniffer, starts to detect;
3) driver, under testing staff's guiding, slowly passes through portal frame with the speed of 5 yards of left and right;
Now radar detection apparatus and PC processor are all started working, and radar detection apparatus is connected with the PCI communication card on PC processor by communication cable, transmission of information.
The concrete steps of work are as follows:
Step 1, user are by PC processor sending controling instruction;
Control instruction is transferred to fpga chip 31 by step 2, PC processor, and fpga chip 31, by control triggering electric circuit 11, is opened nanosecond pulse maker 12 and also produced one group of transmitted pulse, by cable transmission to circulator 21;
Step 3, circulator 21 send transmitted pulse to radiating antenna 22 by transmitting path, and transmitted pulse signal amplitude is shot out; Transmitted pulse signal amplitude is incident upon on the loading bucket of open car;
Step 4, run into the article back reflection in the loading bucket of open car when transmitted pulse; Radiating antenna 22 receives reflected signal, and is transferred to circulator 21; The receiving path of circulator 21 receives reflected signal, and is transferred to receiver 3;
Step 5, receiver 3 amplify signal by LNA 33; Then by A/D sampling module 32, analog signal is sampled as to data signal; Data signal via fpga chip 31 pretreatment after, send PC processor to; Step-by-step impulse generator 34 receives the control signal of fpga chip 31, and to A/D sampling module 32 transmitted information, controls the sampling period;
Step 6, PC processor pair data signal are carried out signal processing and image processing;
Result is presented to user by step 7, PC processor. Result comprise original image, after treatment can recognition image, entrainment warning mark.
4) vehicle, by portal frame, is surveyed and is finished. Now, testing staff examines picture and recognition result, makes the judgement that whether needs further OOBA, as needs OOBA, and the inspection car of unpacking, if do not needed OOBA, enters next step;
5) notify driver, detection is passed through, and sails out of rapidly surveyed area, and commands next vehicle to be detected to sail into, repeats the first step.
Embodiment 2, for the detection of container car. Fig. 3 is the detection schematic diagram for container car:
1) vehicle to be checked sails surveyed area into, and switch-off;
2) open back door;
3) now, driver and other unrelated persons are withdrawn surveyed area;
4) testing staff's hand-held radar detection apparatus, start detection;
Now radar detection apparatus and PC processor are all started working, and radar detection apparatus is connected with the PCI communication card on PC processor by communication cable, transmission of information.
Specific works step is as follows:
Step 1, user are by PC processor sending controling instruction;
Control instruction is transferred to fpga chip 31 by step 2, PC processor, and fpga chip 31, by control triggering electric circuit 11, is opened nanosecond pulse maker 12 and also produced one group of transmitted pulse, by cable transmission to circulator 21;
Step 3, circulator 21 send transmitted pulse to radiating antenna 22 by transmitting path, and transmitted pulse signal amplitude is shot out; Direct irradiation is to the article in container car;
Step 4, run into article back reflection when transmitted pulse; Radiating antenna 22 receives reflected signal, and is transferred to circulator 21; The receiving path of circulator 21 receives reflected signal, and is transferred to receiver 3;
Step 5, receiver 3 amplify signal by LNA 33; Then by A/D sampling module 32, analog signal is sampled as to data signal; Data signal via fpga chip 31 pretreatment after, send PC processor to; Step-by-step impulse generator 34 receives the control signal of fpga chip 31, and to A/D sampling module 32 transmitted information, controls the sampling period;
Step 6, PC processor pair data signal are carried out signal processing and image processing;
Result is presented to user by step 7, PC processor. Result comprise original image, after treatment can recognition image, entrainment warning mark.
5) after about 5s, complete detection;
6) systems soft ware can provide imaging picture and recognition result, and now, testing staff examines picture and recognition result, make the judgement that whether needs further OOBA, as need OOBA, the inspection car of unpacking, if do not needed OOBA, enter next step;
7) notify driver, detection is passed through, and sails out of rapidly surveyed area, and commands next vehicle to be detected to sail into, repeats the first step.
The principle of radar detection apparatus is, when the electromagnetic wave that radar sends runs into the interface between different material, to have two kinds of routes of transmission: reflection and transmission. For different materials, it is different for electromagnetic reflectivity and transmissivity. The amplitude that causes thus reflection echo is different. For being mounted with in car in the situation of same article, its reflection echo amplitude should be comparatively stable; And for the situation that is mounted with different article in car, its reflection echo amplitude changes larger in time domain. By this principle, we can tell in car, whether to carry various article secretly in the situation that not devaning.
In the utility model, radar detection apparatus passes through one group of ultra-narrow pulse string of transmitting, and enrolls echo, thereby obtains its one-dimensional range profile. Two kinds of checkout gears of Fig. 2 and Fig. 3 are different, because container car body is covered by metal, must use hand-held radar detection apparatus to detect, and the goods of open car is not substantially by any object blocks, so can use separately fixed type radar sniffer to detect.
For open car, can be by detection radar installation and portal frame. In the time that car body passes through portal frame, the covert radar antenna that equals is carrying out orientation to scanning, thereby can carry out two-dimensional imaging.
For container car, because its car body is covered completely by metal container, therefore detection radar cannot be from top to its imaging. Now require vehicle to be detected to open back door, by the hand-held detection radar of testing staff, goods in case is scanned, obtain one-dimensional range profile.
In the time being same material in car body, its image presents a mild distribution pattern. When mixing in car body while having many kinds of substance, its image presents obvious fluctuation characteristic. Later use is image blurring recognition technology, automatic alarm.
Above-described is only preferred embodiment of the present utility model, and the utility model is not limited to above embodiment. Be appreciated that the oher improvements and changes that those skilled in the art directly derive or associate under the prerequisite that does not depart from spirit of the present utility model and design, within all should thinking and being included in protection domain of the present utility model.
Claims (2)
1. a green channel contraband detection system, is characterized in that: comprise radar detection apparatus and PC processor;
Described radar detection apparatus comprises emitter (1), receiver (3) and antenna element (2); Described emitter (1) comprises circuits for triggering (11) and nanosecond pulse maker (12); Described receiver (3) comprises fpga chip (31), A/D sampling module (32), LNA (33) and step-by-step impulse generator (34); Described antenna element (2) comprises circulator (21) and the radiating antenna (22) being connected with described circulator (21); Described circulator (21) comprises receive path and transmission channel;
The input of described nanosecond pulse maker (12) is connected with fpga chip (31) by circuits for triggering (11); The output of described nanosecond pulse maker (12) connects the transmission channel of circulator (21) by cable; The input of described LNA (33) connects the receive path of circulator (21), the output of LNA (33) connects the input of A/D sampling module (32), and the output of described A/D sampling module (32) connects fpga chip (31); The input of described step-by-step impulse generator (34) connects fpga chip (31), and output connects A/D sampling module (32);
Described PC processor comprises PCI communication card and multiple external system coupling port; Described PC processor is connected with the fpga chip (31) in described radar detection apparatus by PCI communication card.
2. green channel contraband detection system as claimed in claim 1, is characterized in that, described radar detection apparatus is hand-held radar detection apparatus and/or fixed type radar sniffer.
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| CN201520945568.0U CN205263308U (en) | 2015-11-23 | 2015-11-23 | Violated quality control of green channel surveys system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543831A (en) * | 2016-06-24 | 2018-01-05 | 南京理工大学 | The contraband detecting method of express delivery postal materials Microwave Scanning imaging device and microwave imagery |
| CN114779241A (en) * | 2022-06-27 | 2022-07-22 | 北京航空航天大学杭州创新研究院 | Package security check method and device, storage medium and electronic equipment |
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2015
- 2015-11-23 CN CN201520945568.0U patent/CN205263308U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543831A (en) * | 2016-06-24 | 2018-01-05 | 南京理工大学 | The contraband detecting method of express delivery postal materials Microwave Scanning imaging device and microwave imagery |
| CN107543831B (en) * | 2016-06-24 | 2020-05-22 | 南京理工大学 | Microwave scanning imaging device for express mail items and method for detecting contraband of microwave images |
| CN114779241A (en) * | 2022-06-27 | 2022-07-22 | 北京航空航天大学杭州创新研究院 | Package security check method and device, storage medium and electronic equipment |
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