A green-through shutter device and detection system for removing ghosting
By coordinating the optomechanical system and the shielding mechanism, the X-ray area is dynamically adjusted, solving the ghosting problem in the optical imaging system and achieving efficient and accurate green channel detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU AODEKE PHOTOELECTRIC
- Filing Date
- 2025-09-09
- Publication Date
- 2026-08-04
AI Technical Summary
In existing optical imaging systems, ghosting phenomena caused by the collaborative operation of dual optomechanical systems and interference from multiple paths of light affect the accuracy and efficiency of detection.
The green channel shutter device employs ghosting removal, which dynamically adjusts the ray area through the cooperation of the optical engine and the blocking mechanism to reduce the ghosting effect and provide a clear image.
It achieves efficient testing with full coverage and no omissions, improves the accuracy and efficiency of test results, and ensures personnel safety.
Smart Images
Figure CN224594857U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of vehicle non-destructive testing technology, specifically relating to a green channel shutter device and testing system for removing ghosting. Background Technology
[0002] In the field of transportation supervision, rapid inspection of green channel vehicles relies on high-precision optical imaging technology. Currently, most green channel inspection devices on the market employ X-ray photon radiation imaging technology. Its working principle is as follows: penetrating rays are emitted from a radiation source into the enclosed vehicle compartment. After passing through the compartment and the cargo inside, the rays are received by a detector on the other side. Because different parts of the cargo have different densities, their absorption of rays also varies, resulting in different signal strengths from the detector. These signals of varying strengths are processed into images that form the outlines and shapes of the items inside the vehicle on a computer screen. Workers can then determine the loading conditions inside the enclosed compartment by observing the images.
[0003] However, in optical imaging systems, such as those used for green channel inspection, ghosting has become a key issue restricting image quality. Current technologies often employ a dual-optical-mechanical (DEM) collaborative working mode to improve inspection efficiency. However, the optical path design of the DEM is prone to problems such as light reflection and multi-path light interference, ultimately resulting in ghosting. During operation, the DEM synchronously emits rays that penetrate the cargo, and the emitted rays are fan-shaped. Therefore, while aiming to cover the cargo as completely as possible, the DEMs may repeatedly illuminate the cargo surface, creating overlapping areas. This leads to signal mixing and image ghosting at the receiving end. Ghosting blurs the outline of the item and interferes with feature recognition, increasing the difficulty of manual judgment and potentially causing misjudgments, severely impacting the accuracy and efficiency of green channel inspection. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a green channel shutter device and detection system for removing ghosting. This invention aims to solve the ghosting phenomenon caused by the collaborative operation of dual optomechanical systems and multipath light interference in existing optical imaging systems. It provides a shutter device that can precisely control the on / off state of the light path and reduce light interference. This invention uses the cooperation of an optomechanical system and a blocking mechanism to weaken the influence of ghosting areas on detection, obtain a clear image, and thus improve the accuracy of detection results.
[0005] This utility model provides the following technical solution:
[0006] In a first aspect, a green channel shutter device for removing ghosting is provided, characterized in that it includes a frame assembly, a first optical engine, a second optical engine, a first blocking mechanism, and a second blocking mechanism;
[0007] The frame assembly includes columns, a first crossbeam, and a second crossbeam, with the first crossbeam and the second crossbeam respectively fixed to the columns;
[0008] The first and second optical engines are arranged vertically and slidably mounted on the column to enable the scanning of the vehicle by rays.
[0009] The first shielding mechanism and the second shielding mechanism are respectively installed on the first crossbeam and the second crossbeam, and can move parallel to the column, respectively, to shield the radiation emission areas of the first optical engine and the second optical engine.
[0010] In the above scheme, the first optical engine and the second optical engine are respectively mounted on the column. By acquiring the size information of different vehicles, they move on the column to achieve full coverage of the vehicles by the rays emitted by the optical engines, avoiding detection blind spots. The first shielding mechanism and the second shielding mechanism can shield the irradiation area of the first optical engine and the second optical engine to reduce the overlapping area of the emitted rays, weaken the influence of ghosting on the detection image, and improve the accuracy of the detection results.
[0011] Furthermore, the column is provided with a first slide rail, on which a first slider is slidably connected, and the first optical engine is fixed to the first slider via a first adapter plate.
[0012] Furthermore, the column is provided with a second slide rail, on which a second slider is slidably connected, and the second optical engine is fixed to the second slider via a second adapter plate.
[0013] Furthermore, the first shielding mechanism includes a first servo electric cylinder and a first lead baffle. The first servo electric cylinder is provided with a first push rod, one end of the first lead baffle is mounted on the first push rod, and the first servo electric cylinder is mounted on the first crossbeam.
[0014] Furthermore, the first lead baffle is connected to the end of the first push rod by a nut.
[0015] Furthermore, the second shielding mechanism includes a second servo electric cylinder and a second lead baffle. The second servo electric cylinder is provided with a second push rod, one end of the second lead baffle is mounted on the second push rod, and the second servo electric cylinder is mounted on the second crossbeam.
[0016] Furthermore, the second lead baffle is connected to the end of the second push rod by a nut.
[0017] Secondly, a green channel inspection system with ghosting removal is provided, characterized in that it includes a detection end, and a transmitter and a receiver respectively disposed on both sides of the vehicle inspection channel;
[0018] The transmitting end includes the ghosting removal green channel shutter device as described in any of the first aspects;
[0019] The detection terminal is used to collect vehicle information and transmit it to the transmitting terminal;
[0020] The transmitter is used to receive the vehicle information and emit rays required for vehicle detection.
[0021] The receiving end is used to receive the rays emitted by the transmitting end and acquire vehicle detection images.
[0022] In the above scheme, the detection system uses vehicle information collected by the detection end to control the shutter device of the transmitting end, automatically adjusts the radiation area, and obtains a clear image after receiving and processing by the receiving end. The entire operation process does not require manual processing, avoids the impact of radiation on personal safety, and improves the safety of detection.
[0023] Furthermore, the detection end is equipped with a grating sensor, which is installed on both sides of the vehicle detection channel.
[0024] Compared with the prior art, the beneficial effects of this utility model are:
[0025] This invention achieves dynamic adjustment of the emitted ray area through a combination of optomechanical and shielding mechanisms. The dual optomechanisms of this invention can slide vertically throughout the entire inspection process to ensure full coverage of the vehicle, fundamentally eliminating blind spots and achieving efficient, full-size, and comprehensive inspection. During inspection, for areas where rays overlap, the shielding mechanism moves vertically. By adjusting the relative distance between the shielding mechanism and the corresponding optomechanical ray area, the lower limit of the first optomechanical ray emission area and the upper limit of the second optomechanical ray emission area are dynamically adjusted, thereby reducing the overlap area of rays on the vehicle, minimizing the impact of ghosting on the inspection results, and improving image clarity and the accuracy of the inspection results.
[0026] This utility model has a simple structure and convenient component installation. Based on the existing technology, it reduces the influence of X-ray ghosting by physical shielding. The positions of the first and second lead baffles can be moved without manual operation, which weakens the influence of the ghosting area on the detection results and improves detection efficiency and accuracy.
[0027] This utility model uses radiation-resistant lead baffles, which can ensure personnel safety and imaging quality through strict safety control and baseline adjustment, providing technical support for the efficient implementation of green channels. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the structure of the ghosting removal green channel shutter device in the embodiment of this utility model;
[0029] Figure 2 This is a schematic diagram of the structure of the de-ghosting green channel detection system in this embodiment of the present invention;
[0030] Figure 3 This is a schematic diagram of the detection when the radiation area is unobstructed in an embodiment of this utility model;
[0031] Figure 4 This is a schematic diagram of the detection when the radiation area is obstructed in an embodiment of this utility model.
[0032] The following are marked in the diagram: 1. First optical engine; 2. First slide rail; 3. First lead baffle; 4. First servo electric cylinder; 5. Second optical engine; 6. Second slide rail; 7. Second lead baffle; 8. Second servo electric cylinder; 9. Column; 10. First crossbeam; 11. Second crossbeam; 12. Transmitter; 13. Receiver; 14. First push rod; 15. Second push rod. Detailed Implementation
[0033] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.
[0034] It should be noted that in the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0035] In the description of this invention, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.
[0036] Example 1
[0037] like Figure 1 As shown, this embodiment provides a green channel shutter device for removing ghosting, including a frame assembly, a first optical engine 1, a second optical engine 5, a first blocking mechanism, and a second blocking mechanism;
[0038] The frame assembly includes a column 9, a first crossbeam 10, and a second crossbeam 11, with the first crossbeam 10 and the second crossbeam 11 respectively fixed to the column 9;
[0039] The column 9 is fixed with a first slide rail 2 and a first slider that is slidably connected to the first slide rail 2. The base of the first optical engine 1 is fixed with a first adapter plate and connected to the first slider through the first adapter plate. The first optical engine 1 moves relative to the column 9 by sliding the first slider on the first slide rail 2.
[0040] Similarly, a second slide rail 6 and a second slider slidably connected to the second slide rail 6 are also fixed on the column 9. The second slide rail 6 is arranged in the same direction as the first slide rail 2. The base of the second optical engine 5 is fixed on the second adapter plate and connected to the second slider through the second adapter plate. The second optical engine 5 moves relative to the column 9 by sliding the second slider on the second slide rail 6. The first optical engine 1 and the second optical engine 5 are arranged vertically.
[0041] The first optical engine 1 and the second optical engine 5 can emit highly penetrating X-rays. During the detection process, by dynamically adjusting the positions of the first optical engine 1 and the second optical engine 5, the rays emitted by the first optical engine 1 and the second optical engine 5 can achieve full coverage of the vehicle's area to be detected, thereby eliminating blind spots in the detection.
[0042] The first shielding mechanism is installed on the first crossbeam 10 to shield the radiation area of the first optomechanical system 1. The first shielding mechanism includes a first servo electric cylinder 4 and a first lead baffle 3. The first servo electric cylinder 4 is installed on the first crossbeam 10 and has a first push rod 14 that can move relative to it. The first lead baffle 3 is assembled from sheet metal parts and lead blocks. The sheet metal parts are fixed to the end of the first push rod 14 by nuts, so that one end of the first lead baffle 3 is installed on the first push rod 14 and the other end is close to the lower limit of the radiation emission area of the first optomechanical system 1. When the first servo electric cylinder 4 is working, its internal controller (such as a programmable logic controller PLC) can drive the first push rod 14 to move, so that the first lead baffle 3 can move parallel to the column 9, and move closer to or away from the radiation area emitted by the first optomechanical system 1 in the vertical direction, thereby dynamically shielding part of the radiation area of the first optomechanical system 1 and achieving the effect of adjusting the lower limit of the emission angle of the first optomechanical system 1.
[0043] The second shielding mechanism is installed on the second crossbeam 11 to shield the radiation area of the second optomechanical machine 5. The second shielding mechanism includes a second servo electric cylinder 8 and a second lead baffle 7. The second servo electric cylinder 8 is installed on the second crossbeam 11 and has a second push rod 15 that can move relative to it. The second lead baffle 7 is assembled from sheet metal parts and lead blocks. The sheet metal parts are fixed to the end of the second push rod 15 by nuts, so that one end of the second lead baffle 7 is installed on the second push rod 15 and the other end of the second lead baffle 7 is close to the upper limit of the radiation emission area of the second optomechanical machine 5. When the second servo electric cylinder 8 is working, its internal PLC can drive the second push rod 15 to move, so that the second lead baffle 7 can move parallel to the column 9. In the vertical direction, it moves closer to or away from the radiation area emitted by the second optomechanical machine 5, thereby dynamically shielding part of the radiation area of the second optomechanical machine 5 and achieving the effect of adjusting the upper limit of the emission angle of the second optomechanical machine 5.
[0044] In the above scheme, the first optical engine 1 and the second optical engine 5 are respectively mounted on the column 9. By acquiring the size information of different vehicles, they move relative to the column 9 to adjust the effective area of the rays irradiating the vehicles. During the detection process, the rays fully cover the vehicles, avoiding detection blind spots. Since the rays emitted by the first optical engine 1 and the rays emitted by the second optical engine 5 will overlap when they irradiate the vehicles, the overlapping area of the rays irradiated by the first optical engine 1 and the second optical engine 5 can be reduced by using the first and second shielding mechanisms to shield the irradiation areas of the first optical engine 1 and the second optical engine 5. This reduces the impact of ghosting on the detection image and improves the accuracy of the detection results.
[0045] Example 2
[0046] like Figure 2 As shown, this embodiment provides a green channel detection system with ghosting removal, including a detection end, and a transmitter 12 and a receiver 13 respectively disposed on both sides of the vehicle detection channel;
[0047] The detection end is equipped with a grating sensor. In this embodiment, the grating sensor adopts the HD measurement grating series. The grating sensor is installed on both sides of the vehicle detection channel to collect key dimensional parameters such as the width and height of the vehicle and data such as the body outline in real time when the vehicle passes by. The information is accurately fed back to the control system of the transmitter 12 through a high-speed data transmission link, providing a reliable basis for the adjustment of the optical engine position.
[0048] The transmitter 12 includes the ghosting removal green channel shutter device described in Embodiment 1. After receiving the vehicle information collected by the detection end, the control system of the transmitter 12 instructs the optical engine to adjust the emission position according to the size and outline information of the vehicle. After the optical engine is adjusted to the correct position, it emits the rays required for detection towards the vehicle.
[0049] The receiver 13 is used to receive the X-ray signal passing through the vehicle in real time, process it to obtain the detection image, and thus determine the information inside the vehicle's compartment.
[0050] There is a certain distance between the X-ray emission ports of the two optical engines. After the X-rays emitted by the two optical engines penetrate the cargo, while achieving full coverage of the vehicle, X-ray overlap can easily occur on some cargo, leading to signal mixing and image ghosting at the receiving end. To address this, the detection system in this embodiment solves the above problems through dual control: on the one hand, the optical engines are driven to move and adjust their positions to optimize the X-ray irradiation range, ensuring that the receiving end only acquires the "dedicated X-ray signal" of the corresponding optical engine; on the other hand, the shielding mechanism is adjusted to block X-rays that exceed the preset range. Through the synergistic effect of the two optical engines and the shielding mechanism, a clear image without ghosting is ultimately generated. Next, this embodiment will further explain the working process of the detection system.
[0051] In the green channel inspection system for ghosting removal, grating sensors collect vehicle information in real time and accurately feed this information back to the control system via a high-speed data transmission link, providing a reliable basis for adjusting the position of the optical engines. When special vehicle models that are too wide or too high are detected, the control system immediately initiates adjustment commands, driving the first optical engine 1 and the second optical engine 5 to move on the first slide rail 2 and the second slide rail 6 respectively to adjust their positions. By optimizing the relative spacing between the two optical engines, it ensures that the emitted rays can completely cover the cross-section of the truck. At the same time, to address the ghosting problem that may occur during the inspection process, the inspection system can also automatically fine-tune the optical engine spacing based on the real-time data from the grating sensors, fundamentally eliminating blind spots and achieving efficient, full-size, and comprehensive inspection.
[0052] like Figure 3 As shown, when the first optical engine 1 and the second optical engine 5 are adjusted to the optimal irradiation area, the ray areas emitted by the two optical engines will intersect, resulting in a non-negligible overlapping area. When a part of the vehicle to be detected is located in this overlapping area, the overlapping area is the superposition of the ray signals emitted by the two optical engines. This will change the effective energy and intensity of the ray in this area, causing the signal received by the receiver 13 to deviate from the actual situation, forming strip-shaped or regional artifacts, ultimately leading to ghosting problems in the generated image and affecting the accuracy of the detection results.
[0053] In this embodiment, through the vertically arranged dual X-ray machine system, the shielding mechanism can physically limit the vertical divergence angle of the rays, minimizing the vertical intersection of the ray paths of the first X-ray machine 1 and the second X-ray machine 5, while fully covering the cargo inspection area. If vertical ghosting fringes appear in the image of the receiving end 14, it indicates that the ray angles of the first X-ray machine 1 and the second X-ray machine 5 overlap. The receiving end will feed back information to the transmitting end, and then the first servo electric cylinder 4 will drive the first lead baffle 3 to move, and the second servo electric cylinder 8 will drive the second lead baffle 7 to move, adjusting the relative distance between the lead baffles and the ray emission area in the vertical direction. The first lead baffle 3 moves upward to shield part of the ray area of the first X-ray machine 1, raising the lower limit of the ray irradiation area of the first X-ray machine 1 in the vertical direction. The second lead baffle 7 moves downward to shield part of the ray area of the second X-ray machine 5, lowering the upper limit of the ray irradiation area of the second X-ray machine 5 in the vertical direction. The emission area after shielding adjustment is as follows: Figure 4 As shown.
[0054] from Figure 3 and Figure 4 The comparison shows that by working together with the first lead baffle 3 and the second lead baffle 7, the overlapping ray area of the optical engine irradiating the surface of the goods can be greatly reduced, the interference of "excessive" ray signals in the overlapping area of the vehicle can be reduced, the ghosting ratio can be reduced, and finally, after being received and processed by the receiver 13, a clear detection image can be obtained, thereby improving the accuracy of the detection results.
[0055] Additionally, if the edges of the cargo image are blurry and not covered by the rays, it indicates that the first lead shield 3 and the second lead shield 7 may be excessively obstructing the view. In this case, the relative distance between the optical engine and the lead shield needs to be adjusted in reverse to further adjust the ray emission angle. During this detection process, the first optical engine 1 and the second optical engine 5 can also dynamically adjust the effective irradiation area in real time based on the vehicle information detected by the grating sensor, thereby obtaining the clearest detection image.
[0056] This utility model has a simple structure and convenient component installation. Based on the existing technology, it reduces the influence of X-ray ghosting through physical shielding. The positions of the first lead baffle 3 and the second lead baffle 7 can be moved without manual operation, weakening the impact of the ghosting area on the detection results and improving detection efficiency and accuracy. Through the above process and equipment design, the ghosting-removing green channel detection system can achieve non-contact rapid scanning, and through strict safety control and technical adjustment, it can ensure personnel safety and image quality, providing technical support for the efficient execution of green channels.
[0057] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A de-ghosted global shutter device, comprising: Includes a frame assembly, a first optical engine (1), a second optical engine (5), a first occlusion mechanism, and a second occlusion mechanism; The frame assembly includes a column (9), a first crossbeam (10), and a second crossbeam (11), with the first crossbeam (10) and the second crossbeam (11) respectively fixed to the column; The first optical engine (1) and the second optical engine (5) are arranged vertically and are slidably mounted on the column (9) to realize the scanning of the vehicle by the X-ray; The first shielding mechanism and the second shielding mechanism are respectively installed on the first crossbeam (10) and the second crossbeam (11), and can move parallel to the column (9) to shield the radiation emission areas of the first optical engine (1) and the second optical engine (5).
2. The de-ghosted global shutter device of claim 1, wherein, The column (9) is fixedly installed with a first slide rail (2), and a first slider is slidably connected on the first slide rail (2). The first optical engine (1) is fixed on the first slider through a first adapter plate.
3. The de-ghosted global shutter device of claim 1, wherein, The column (9) is fixedly installed with a second slide rail (6), and a second slider is slidably connected on the second slide rail (6). The second optical engine (5) is fixed on the second slider through a second adapter plate.
4. The de-ghosted global shutter device of claim 1, wherein, The first shielding mechanism includes a first servo electric cylinder (4) and a first lead baffle (3). The first servo electric cylinder (4) is provided with a first push rod (14). One end of the first lead baffle (3) is mounted on the first push rod (14). The first servo electric cylinder (4) is mounted on the first crossbeam (10).
5. The de-ghosted green flash shutter device of claim 4, wherein, The first lead baffle (3) is connected to the end of the first push rod (14) by a nut.
6. The de-ghosted global shutter device of claim 1, wherein, The second shielding mechanism includes a second servo electric cylinder (8) and a second lead baffle (7). The second servo electric cylinder (8) is provided with a second push rod (15). One end of the second lead baffle (7) is mounted on the second push rod (15). The second servo electric cylinder (8) is mounted on the second crossbeam (11).
7. The de-ghosted green flash shutter device of claim 6, wherein, The second lead baffle (7) is connected to the end of the second push rod (15) by a nut.
8. A green light detection system for deghosting, characterized in that It includes the detection end, as well as the transmitter and receiver respectively set on both sides of the vehicle detection channel; The transmitting end (12) includes the ghosting removal green channel shutter device according to any one of claims 1 to 7; The detection terminal is used to collect vehicle information and transmit it to the transmitting terminal; The transmitter (12) is used to receive the vehicle information and emit rays required for vehicle detection; The receiving end (13) is used to receive the rays emitted by the transmitting end (12) to obtain a vehicle detection image.
9. The de-shadowed green light detection system of claim 8, wherein, The detection end is equipped with a grating sensor, which is installed on both sides of the vehicle detection channel.