CN200986555Y - Device for performing quick image-forming examination to mobile target - Google Patents

Abstract

A device for rapid imaging inspection of a moving target, the device comprising: a channel for the moving target to be inspected to pass through; a scanning imaging device, the scanning imaging device emits a radiation beam to the moving target under inspection to image the moving target, Thereby checking; The first detection unit is used to judge whether the moving object under inspection enters the passage and counts; the second detection unit is used to measure the moving speed of the moving object under inspection; and the control system, which is connected with the scanning The imaging device, the first detection unit and the second detection unit are electrically connected, and the second detection unit is controlled to detect the moving speed of the moving object according to the detection signal received from the first detection unit about the moving object entering the channel, and according to the first detection unit The measurement result of the second detection unit checks the moving object with a scanning frequency corresponding to the speed of the moving object.

Description

Equipment for rapid imaging inspection of moving targets

technical field

The utility model relates to the scanning and imaging process of a moving target, in particular to the scanning and imaging process when the target moves at a non-uniform speed and incomplete fast imaging is required. In particular, the present application relates to a device for rapid imaging inspection of a moving target.

Background technique

Equipment for inspecting vehicles using high-energy rays is a typical example of equipment for imaging inspection of moving objects. In the equipment that uses high-energy rays to inspect vehicles, it is usually used that the driver and passengers leave the vehicle, and the vehicle to be inspected is dragged by the drag device to move at a constant speed, and the accelerator uses a fixed frequency to scan and image the entire vehicle. The entire inspection takes several minutes, and the equipment cost is high. Vehicle inspection rates are low.

WO2005098400 discloses an inspection system for inspecting an object, which includes: a first source providing a first radiation beam, a specific cross-section of the first radiation beam is directed in a first direction, and the first direction is transverse to the moving direction of the object a second source providing a second radiation beam with a specific cross-section directed in a first direction and interrupted from time to time by the first radiation beam; a plurality of scatter detectors for detecting radiation from the first and second radiation beams at least one of the scattered radiation and generate a scattered radiation signal; and a controller for generating an image based on the scattered radiation signal.

WO2005098401 discloses an automatic object inspection system for inspecting moving objects, comprising: a scanning area with a radiation source and a radiation source detector; a first sensor element automatically detecting a first part of a moving object passing through the scanning area and a second part of the moving object The second part will enter the scanning zone, wherein the first sensor element sends a signal to the automatic object inspection system to start scanning the second part when it detects that the second part of the object will enter the scanning zone; Triggered by a signal, when the second part of the moving object passes through the scanning area, the radiation emitted by the radiation source passes through the scanning area along the direction of the radiation detector, and the radiation is turned off when the second part of the moving object is not in the scanning area.

Both of the above two inspection devices have the disadvantages of the above-mentioned prior art, that is, the scanning is performed at a fixed frequency, the inspection time is long, the equipment cost is high, and the vehicle inspection rate is low.

Utility model content

In order to overcome the defects in the above-mentioned prior art, the purpose of this utility model is to provide a device for rapid imaging inspection of moving objects, which can quickly inspect objects moving at a certain speed range, and greatly shorten the inspection time.

In order to realize the purpose of the above-mentioned utility model, the technical solution of the utility model is implemented in the following manner.

A device for rapid imaging inspection of a moving target, the device comprising: a passage for the moving target to be inspected to pass through; a scanning imaging device that emits radiation beams to the moving target to be inspected to image the moving target, Thereby checking; The first detection unit is used to judge whether the moving object under inspection enters the passage and counts; the second detection unit is used to measure the moving speed of the moving object under inspection; and the control system, which is connected with the scanning The imaging device, the first detection unit and the second detection unit are electrically connected, and the second detection unit is controlled to detect the moving speed of the moving object according to the detection signal received from the first detection unit about the moving object entering the channel, and according to the first detection unit The measurement result of the second detection unit checks the moving object with a scanning frequency corresponding to the speed of the moving object.

In one embodiment of the present invention, a device for inspecting a vehicle using high-energy rays is provided. The inspection is performed while the vehicle is moving at a certain speed, without the need for the driver and passengers to get off the vehicle, which can greatly shorten the inspection time, thereby improving The vehicle passing rate achieves 100% inspection rate.

Because the utility model adopts the above-mentioned technical scheme, the vehicle passing rate can be increased to more than 200 container trucks per hour. Compared with the prior art, the utility model can greatly improve the vehicle inspection rate, significantly reduce the equipment cost, and the equipment occupies a small area. Therefore, the device can be used in various road bayonet occasions.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

By describing the preferred embodiments with reference to the accompanying drawings, the above-mentioned purpose and advantages of the utility model will be more obvious, wherein:

FIG. 1 is a schematic diagram of a vehicle inspection device according to an embodiment of the present invention;

Fig. 2 is a schematic top view of the device shown in Fig. 1 .

Detailed ways

Referring to the accompanying drawings, the vehicle rapid inspection equipment of the present utility model includes an accelerator cabin body 9, quick response light curtain switches 2, 5 and 6, ground induction coils 3 and 8, protective walls 4 and 11, photoelectric switch 10, speed measuring radar 7, Several parts such as detector arm 12, control software. The quick-response light curtain switch 2 is installed on the installation columns on both sides of the channel, the ground sense coil 3 is buried under the surface of the channel entrance as the first switch of the vehicle entrance, and the protective walls 4 and 11 are vertically installed on both sides of the channel and respectively The accelerator cabin body 9 on both sides of the channel is connected to the detector arm 12, and the quick response light curtain switches 5 and 6 are installed on the walls of the accelerator cabin body 9 and the detector arm 12 on both sides of the channel, and the photoelectric switch 10 is installed on the two sides of the channel respectively. On the protective wall 11 on the side, the speed measuring radar 7 is installed on the outer wall of the accelerator cabin 9 close to the passage, and the ground induction coil 8 is buried under the surface of the passage and is biased towards the exit direction. The working process of the present utility model is as follows:

When the number of vehicles in the channel is 0, the system is in the standby state. When a vehicle 1A is coming to the channel, the ground induction coil 3 is first effective, and combined with the fast response light curtain switch 2 to complete the discrimination of the vehicle's driving direction. In the channel, the number of vehicles in the channel is increased by 1, and the speed measuring radar 7 measures the driving speed of the vehicle, and the system enters the ready state. The vehicle continues to drive forward, and the system records the state changes of the vehicle during the passage. When the vehicle passes from 1A to 1C at a normal speed, the photoelectric switch 10 is effective. At this time, the state of the light curtain switch 5 is used to judge whether the vehicle to be inspected is a container truck or a closed truck, and different scanning trigger conditions are adopted according to different models. If the vehicle at this time is a closed truck, it will be scanned immediately, and if it is a container truck, it will be scanned and inspected when the container arrives at the inspection area. The scanning pulse frequency is obtained by the real-time speed measurement of the vehicle by the real-time speed measurement radar 7, and the output frequency of the real-time speed measurement radar 7 will change according to the change of the vehicle speed. When the vehicle travels out of the scanning channel, the vehicle count in the channel is decremented by 1. As long as the number of vehicles in the channel is not 0, the system remains in the ready state; when the number of vehicles in the channel is 0, the system enters the standby state.

The control software consists of four parts, which are system management module, channel vehicle counting module, driver automatic identification and avoidance module, software watchdog module, and abnormal situation processing module. The system management module is responsible for coordinating the work of each module, communicating with the outside, and controlling the external equipment. The vehicle counting module is used to count the number of vehicles in the passage, and can correctly identify the vehicles entering and leaving the passage. The number of vehicles in the passage is an important basis for the control of the system management module. The driver's automatic recognition and avoidance module is used to determine the position and type of the vehicle. This module can correctly identify container trucks and closed trucks, and perform different scanning controls according to different models. The safety interlock program is embedded in the automatic driver identification and avoidance module, which can monitor the working status of the accelerator when the driver passes through the scanning area, ensuring the safety of the drivers and passengers. The software watchdog module is used to prevent the system from entering an abnormal state, or a state that is inconsistent with the actual situation. The abnormal situation processing module includes alarm, emergency situation processing, personnel intervention, etc., and is used to deal with abnormal situations.

It is worth noting that, according to the technical scheme of the present utility model, the technical features in the above-mentioned embodiments, wherein the speed measuring radar 7 in the speed measuring method can be equivalently replaced by the following technical features, for example, using a photoelectric switch or a light curtain switch at a certain distance. Speedometer. The driver's automatic avoidance control logic can be equivalently replaced by the following technical features, for example, the driver's automatic avoidance can be performed by changing the type or quantity of switches for detecting vehicles. In a word, the replacement of these technical features adopts the technical solutions formed by the well-known technologies of those skilled in the art, and all of them shall belong to the protection scope of the present utility model.

Claims (14)

1. one kind is carried out the equipment of quick-speed image-forming checking to moving target, it is characterized in that, comprising:

For being checked the passage that moving target passes through;

Scanned imagery device, described scanned imagery device be to being checked the moving target radiation beams so that moving target is carried out imaging, thereby check;

First detecting unit is used to differentiate the described passage that whether enters of being checked moving target and also counts;

Second detecting unit is used to measure the translational speed of being checked moving target; With

Control system, itself and described scanned imagery device, first detecting unit and the second detecting unit electric connection, the detection signal that enters described passage according to the relevant moving target that receives from first detecting unit is controlled second detecting unit translational speed of moving target is detected, and adopts with the corresponding sweep frequency of speed of moving target according to the measurement result of second detecting unit moving target is checked.

2. according to claim 1 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that, also comprise the 4th detecting unit, be used to differentiate checked moving target whether leave described passage and counting.

3. according to claim 2 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that, when control system determines that difference is zero between the counting of the counting of first detecting unit and the 4th detecting unit, make equipment enter holding state.

4. according to claim 1 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that described first detecting unit comprises:

Be embedded in ground induction coil below the described feeder connection face of land and the first quick response light curtain switch that is arranged on described passage both sides that is used in combination with it.

5. according to claim 4 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that described passage both sides have the installation column, the described first quick response light curtain switch is arranged on the described column.

6. according to claim 2 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that described the 4th detecting unit comprises:

Be embedded in ground induction coil of being partial to export below the face of land in the described passage and the second quick response light curtain switch that is arranged on described passage both sides that is used in combination with it.

7. according to claim 1 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that described second detecting unit is arranged on the velocity radar of passage both sides.

8. according to claim 1 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that described second detecting unit is arranged on the passage both sides optoelectronic switch of preset distance at interval.

9. according to claim 1 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that described second detecting unit is arranged on the passage both sides light curtain switch of preset distance at interval.

10. according to claim 1 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that described scanned imagery device comprises:

Accelerator is used for radiation beams and is scanned checking moving target;

Detector is used to receive from being checked the radiation beam of moving target scattering;

Imaging device carries out imaging according to the radiation beam from being checked the moving target scattering that detector detected; With

Radioprotector, the environment metering that is used for assurance equipment periphery is limited within the allowed band.

11. according to claim 10 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that described radioprotector is arranged on the fender wall of passage both sides.

12. according to claim 6 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that described scanned imagery device comprises:

Accelerator is used for radiation beams and is scanned checking moving target;

Detector is used to receive from being checked the radiation beam of moving target scattering;

Imaging device carries out imaging according to the radiation beam from being checked the moving target scattering that detector detected; With

Radioprotector, the environment metering that is used for assurance equipment periphery is limited within the allowed band.

13. according to claim 12 moving target is carried out the equipment of quick-speed image-forming checking, it is characterized in that described detector has detector arm, the described second quick response light curtain switch is arranged on the detector arm.

14. described moving target is carried out the equipment of quick-speed image-forming checking according to arbitrary among the claim 1-13, it is characterized in that described moving target is a vehicle.

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