CN209821410U - Vehicle chassis inspection device and vehicle scanning system - Google Patents
Vehicle chassis inspection device and vehicle scanning system Download PDFInfo
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- CN209821410U CN209821410U CN201920664546.5U CN201920664546U CN209821410U CN 209821410 U CN209821410 U CN 209821410U CN 201920664546 U CN201920664546 U CN 201920664546U CN 209821410 U CN209821410 U CN 209821410U
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Abstract
The present disclosure relates to a vehicle chassis inspection device and a vehicle scanning system, wherein the vehicle chassis inspection device includes: a vehicle speed acquisition component configured to acquire running speed information of a vehicle for determining an image acquisition cycle; an image acquisition section (4) configured to capture a vehicle chassis image; and the image acquisition circuit (10) is connected with the vehicle speed acquisition component and the image acquisition component (4) and is configured to acquire the vehicle chassis image shot by the image acquisition component (4) according to an image acquisition cycle. The vehicle chassis inspection device can adjust the shooting process of the vehicle chassis image according to the vehicle speed, can ensure the definition of the vehicle chassis image when the vehicle changes speed, and prevents the image from generating the defect of fuzzy deformation, thereby improving the accuracy and efficiency of the vehicle chassis inspection.
Description
Technical Field
The present disclosure relates to the field of safety inspection technology, and in particular, to a vehicle chassis inspection device and a vehicle scanning system.
Background
The vehicle chassis inspection system is mostly distributed at highway checkpoints, frontier inspection, prisons, important meetings and security places and is used for inspecting the problems of drugs, explosives, guns, chassis refitting and the like of the vehicle chassis. The chassis inspection system adopts image acquisition equipment to shoot a vehicle chassis from the lower part of a vehicle, locally stores acquired pictures and can also provide an external interface to output acquired images.
The current chassis inspection system has various forms, but can only be used as a vehicle chassis image acquisition device simply, and images acquired when a vehicle changes speed through the chassis inspection system can be distorted or deformed; moreover, the environmental adaptability of the equipment is poor, the influence of dust and rain and snow weather on the normal use of the equipment and the quality of images is large, and personnel is required to maintain the equipment regularly; in addition, although a part of products integrate a license plate recognition system, a shot chassis image can be bound with a license plate, but the functions are still single.
SUMMERY OF THE UTILITY MODEL
The embodiment of the disclosure provides a vehicle chassis inspection device and a vehicle scanning system, which can improve the accuracy of vehicle chassis inspection.
According to an aspect of the present disclosure, there is provided a vehicle chassis inspection device including:
a vehicle speed acquisition component configured to acquire running speed information of a vehicle for determining an image acquisition cycle;
an image acquisition section configured to capture a vehicle chassis image; and
and the image acquisition circuit is connected with the vehicle speed acquisition component and the image acquisition component and is configured to acquire the vehicle chassis image shot by the image acquisition component according to an image acquisition cycle.
In some embodiments, the vehicle speed acquisition means includes detection means configured to detect a position and a traveling speed of the vehicle; or
The vehicle speed acquisition means is configured to acquire the position and running speed information of the vehicle from detection means other than the vehicle chassis inspection device.
In some embodiments, the photographing frequency of the image acquisition section is set according to the determined image capturing period.
In some embodiments, the vehicle chassis inspection device further comprises a frequency adjusting circuit, connected to the image acquiring component, configured to set an initial photographing frequency of the image acquiring component according to the running speed information before the vehicle reaches the vehicle chassis inspection device, and adjust the photographing frequency of the image acquiring component in real time according to the running speed information during the vehicle passes through the vehicle chassis inspection device.
In some embodiments, the vehicle chassis inspection apparatus further includes a frequency adjustment circuit, connected to the image acquisition section, configured to cause the image acquisition section to perform photographing at a photographing frequency required when the vehicle passes at a maximum traveling speed; the image capture circuit is configured to decimate the captured image by an image capture period to form a processed captured image.
In some embodiments, the image capture period is determined based on the number of frames that the image capture component needs to capture within a preset movement distance of the vehicle.
In some embodiments, the vehicle chassis inspection apparatus further includes a heating part disposed near the image capturing part to perform drying.
In some embodiments, the image acquiring unit is configured to acquire an adhesion degree of the dryable object in a corresponding area of the self-photographing surface, and the heating unit is turned on when the adhesion degree of the dryable object exceeds a first preset threshold; and/or
The vehicle chassis inspection apparatus further includes a temperature detection part configured to detect a temperature of an area around the image acquisition part, the heating part being turned on in a case where the temperature is lower than a second preset threshold.
In some embodiments, the vehicle chassis inspection device further comprises a housing and a blow down assembly, the blow down assembly comprising:
a gas source configured to provide a compressed gas;
the air inlet is arranged on the shell and is configured to introduce compressed air provided by an air source; and
and the blowing openings are arranged on the shell, face to the surface to be cleaned of the vehicle chassis inspection device and are configured to enable introduced compressed air to blow to the surface to be cleaned for decontamination.
In some embodiments, the image acquisition component is configured to acquire a degree of soiling on the surface to be cleaned, the air blowing assembly being activated when the degree of soiling exceeds a third preset threshold; or
The blowing assembly is started according to a preset time interval.
In some embodiments, the vehicle chassis inspection device is of a portable structure, the vehicle chassis inspection device further includes a housing and a reflection member provided on the housing, the reflection member includes an inclined reflection surface for imaging the vehicle chassis, and the image capturing surface of the image capturing member is opposite to the reflection surface.
In some embodiments, the vehicle chassis inspection device further comprises: the plurality of light supplementing light sources are arranged in the shell, positioned on one side of the image acquisition component far away from the reflecting surface along the first direction, arranged at intervals along the second direction and configured to provide auxiliary light sources for the image acquisition component; the first direction is consistent with the passing direction of the vehicle, and the second direction is perpendicular to the first direction.
In some embodiments, the vehicle chassis inspection device further comprises:
the first window is arranged on the shell and is configured to cover the irradiation surface of the light supplementing light source;
a second window provided on the housing and configured to cover a shooting surface of the image acquisition part; and
the air blowing assembly comprises at least one group of air blowing ports, and the air blowing ports face to the surface to be cleaned;
wherein the surface to be cleaned comprises at least one of a reflective surface, a first window and a second window.
In some embodiments, the image capturing unit is disposed in a middle region of the housing along the second direction, and at least some of the sets of blowing openings are located on both sides of the mounting sidewall of the first window along the second direction and face at least one of the reflecting surface and the first window.
In some embodiments, the housing includes a ramp structure that slopes outwardly from top to bottom and is provided at an end of the housing in the first direction near the vehicle-entering direction and/or at an end of the housing in the second direction.
In some embodiments, the vehicle chassis inspection device is of a buried structure, and further comprises a housing, wherein the image acquisition component is arranged in the housing, and the shooting surface is arranged upwards.
In some embodiments, the vehicle chassis inspection device further comprises: the plurality of light supplementing light sources are arranged in the shell, arranged on two sides of the image acquisition component in the second direction side by side and configured to provide auxiliary light sources for the image acquisition component; wherein the second direction is perpendicular to the vehicle passing direction.
In some embodiments, the vehicle chassis inspection device further comprises:
the third window is arranged on the shell and is configured to cover the irradiation surface of the light supplementing light source and the shooting surface of the image acquisition component integrally; and
the air blowing assembly comprises at least one group of air blowing openings, the air blowing openings are formed in the top of the shell and located on one side of the third window along the first direction, and the air blowing openings face the third window.
In some embodiments, the housing comprises:
the top surface of the bottom box is provided with an opening;
the cover plate is arranged at the top of the bottom box and seals the opening; and
the slope structure is arranged on the cover plate and extends along the second direction, and the slope structure inclines outwards from top to bottom; wherein the second direction is perpendicular to the vehicle passing direction.
According to another aspect of the present disclosure, there is provided a vehicle scanning system including:
the ray scanning device is configured to scan the vehicle carried article; and
the vehicle chassis inspection device of the above embodiment;
the vehicle chassis image and the image scanned by the ray scanning device on the vehicle carried article are both associated with the vehicle identity information.
In some embodiments, the vehicle chassis inspection device is battery powered.
In some embodiments, the radiation scanning device and the vehicle chassis inspection device employ wireless communication.
In some embodiments, the vehicle scanning system further comprises at least one of a license plate recognition device, a vehicle type recognition device, and a vehicle weighing device, and the vehicle chassis image is associated with at least one of vehicle identity information obtained by the license plate recognition device, vehicle type information obtained by the vehicle type recognition device, and weight information obtained by the vehicle weighing device.
Based on the technical scheme, according to the vehicle chassis inspection device disclosed by the embodiment of the disclosure, the control component can determine the image acquisition period according to the vehicle running speed information acquired by the vehicle speed acquisition component, and acquire the vehicle chassis image shot by the image acquisition component according to the image acquisition period, and the vehicle chassis inspection device can adjust the vehicle chassis image shooting process according to the vehicle speed, so that the definition of the vehicle chassis image can be ensured when the vehicle changes speed, the image is prevented from being blurred and deformed, and the accuracy and the efficiency of vehicle chassis inspection are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:
FIG. 1 is a schematic block diagram of one embodiment of a vehicle chassis inspection apparatus of the present disclosure;
FIG. 2 is a schematic structural view of one embodiment of a vehicle chassis inspection device of the present disclosure;
fig. 3 is a schematic structural view of another embodiment of the vehicle chassis inspection device of the present disclosure.
Description of the reference numerals
1. A housing; 11. a bottom box; 12. a cover plate; 13. a ramp structure; 2. a light source for light supplement; 21. a second window; 3. a heating member; 4. an image acquisition section; 41. a first window; 42. a third window; 5. a reflective surface; 6. a blowing assembly; 61. an air inlet; 62. an air blowing port; 7. a wire passing hole; 7', integrating holes; 8. a wireless data transmission module; 9. a detection section; 10. an image acquisition component; 10A, a frequency adjustment component; 20. a ray scanning device; 30. a license plate recognition device; 40. a vehicle type recognition device; 50. a vehicle weighing device control component; 60. and a control component.
Detailed Description
The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.
The terms "first", "second", and the like in the present disclosure are merely for convenience of description to distinguish different constituent elements having the same name, and do not denote a sequential or primary-secondary relationship.
In the description of the present disclosure, the directions or positional relationships indicated by "upper", "lower", "top", "bottom", "front", "rear", "inner" and "outer" and the like are used based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present disclosure, and do not indicate or imply that the device referred to must have a specific direction, be constructed in a specific direction and be manipulated, and thus, should not be construed as limiting the scope of the present disclosure. As shown in fig. 2 and 3, the "first direction" mentioned later coincides with the vehicle passing direction, such as the X direction, and the "second direction" is perpendicular to the first direction, such as the Y direction, and the Z direction indicates the height direction of the vehicle chassis inspection device, which coincides with the vehicle height direction.
As shown in fig. 1, the present disclosure provides a vehicle chassis inspection device, hereinafter "inspection device" for short, which in some embodiments, includes: the device comprises a vehicle speed acquisition component, an image acquisition component 4 and an image acquisition circuit 10. The vehicle speed acquisition component is configured to acquire running speed information of a vehicle so as to determine an image acquisition period according to the running speed information; the image acquisition component 4 is configured to capture images of the vehicle chassis, for example, a line camera or an area camera or the like can be adopted, the line camera can capture images of any length and is suitable for capturing the vehicle chassis with different lengths; the image acquisition circuit 10 is connected to the vehicle speed acquisition means and the image acquisition means, and is configured to acquire the vehicle chassis image captured by the image acquisition means 4 in accordance with an image acquisition cycle.
The vehicle chassis inspection device can adjust and obtain parameters of the vehicle chassis image according to the vehicle speed, can ensure the definition of the vehicle chassis image when the vehicle changes speed, and prevents the image from fuzzy deformation, thereby improving the accuracy and efficiency of the vehicle chassis inspection.
In this embodiment, the vehicle speed acquisition means may include detection means 9 configured to detect the position and the traveling speed of the vehicle. Since the detection component 9 is arranged in the inspection device, the inspection device can be independently used for inspecting the vehicle chassis, and the flexibility and the convenience of use are improved. For example, the detection section 9 may employ an area laser scanner, a geomagnetic sensor, an ultrasonic sensor, an infrared diffuse reflection sensor, or the like.
Or the casing 1 of the inspection device is provided with a communication interface, and the vehicle speed acquisition means is configured to acquire the position and running speed information of the vehicle from the detection means 9 other than the inspection device. For example, the vehicle speed acquisition means may acquire the position and traveling speed information of the vehicle from the detection means 9 of the radiation scanning device 20, or may acquire the position and traveling speed information of the vehicle from the detection means 9 mounted separately from the inspection device.
The inspection device can be matched with other devices in a field for use, so that the volume and the weight of the inspection device are reduced, and the portable inspection device is more convenient to carry; in addition, because the inspection device is close to the ground, the detection component 9 is arranged at a higher position outside the inspection device, the running condition of the vehicle can be detected more accurately, the accuracy of chassis inspection is improved, the damage caused by rolling of the vehicle tire can be avoided, and the use reliability and safety are improved.
Three different ways of obtaining the chassis image from the vehicle running speed information are given below.
In the first embodiment, the image capturing period is determined according to the running speed information, the image capturing period is reduced with the increase of the running speed, the shooting frequency of the image acquiring part 4 is set according to the determined image capturing period in the process of checking the vehicle chassis, and the image capturing circuit 10 keeps the original frame number after obtaining the image shot by the image acquiring part 4 without performing the extraction processing.
Specifically, the shooting frequency required by the vehicle at different driving speed points to ensure the clear image acquisition component 4 can be determined through experiments, the shooting frequency is subjected to reciprocal calculation to obtain an image acquisition period, and then a variation curve of the image acquisition period along with the driving speed of the vehicle is fitted. In the process of checking the vehicle chassis, the photographing frequency of the image pickup section 4 is set in real time according to the vehicle running speed.
In the embodiment, clear and non-deformable images can be obtained by setting the shooting frequency of the image acquisition component 4, the image acquisition frame number can be acquired as required, the memory occupation of the image acquisition circuit 10 can be reduced, and the processing speed is improved.
Further, the vehicle chassis inspection device further comprises a frequency adjusting circuit 10A connected to the image acquisition part 4, wherein the frequency adjusting circuit 10A is configured to set an initial shooting frequency of the image acquisition part 4 according to the running speed information before the detection part 9 detects that the vehicle reaches the inspection device, and adjust the shooting frequency of the image acquisition part 4 in real time according to the running speed information during the process of detecting that the vehicle passes through the inspection device.
The inspection mode can set the shooting frequency matched with the vehicle speed in advance before the vehicle passes through the inspection device, can improve the definition of images acquired by the vehicle in the initial time period of entering the inspection device, and can integrally acquire high-quality chassis images.
In the second embodiment, the vehicle chassis inspection apparatus further includes a frequency adjustment circuit 10A connected to the image acquisition section 4, the frequency adjustment circuit 10A being configured to cause the image acquisition section 4 to perform photographing at a photographing frequency required when the vehicle passes at the highest traveling speed; the image pickup circuit 10 is configured to sort the picked-up image by an image pickup cycle, and reject the unnecessary frames to form a processed picked-up image.
The embodiment can enable the image acquisition component 4 to shoot at high frequency, and obtain clear shot images in a post-processing mode through the image acquisition circuit 10, so that the requirement on the response speed of the image acquisition component 4 can be reduced, and the image acquisition circuit 10 can also process the shot images in real time or delay time according to the situation.
In the third embodiment, the vehicle chassis inspection apparatus further includes a controller configured to determine the number of frames that the image acquisition unit 4 needs to acquire within a preset movement distance, and determine the image acquisition period according to the number of frames that the vehicle needs to acquire within the preset movement distance, so that the image acquisition unit 4 acquires the chassis image in a fixed-length triggering manner.
The embodiment can acquire the chassis image in an external triggering mode according to the distance parameter, and can reduce the real-time requirement on the image acquisition component 4.
The three embodiments can ensure the obtained chassis image of the vehicle to be clear and reduce the image distortion by introducing the running speed information of the vehicle. Moreover, the vehicle can be judged to enter and leave the checking device according to the detection part 9, and the image acquisition is turned on or off in time, so that the power consumption of the device and the memory occupied by the control part are reduced.
In some embodiments, as shown in fig. 2 and 3, the inspection apparatus of the present disclosure may further include a heating part 3, and the heating part 3 is disposed at a position close to the image obtaining part 4 for implementing drying. For example, the heating member 3 may be an electric heating member such as a heating wire, an electric heating tube, an electric heating plate, or the like, or may be an electromagnetic heating member or the like.
In one implementation, the inspection apparatus includes a housing 1, and a heating glass may be mounted on the housing 1 near the image capturing device 4, or the heating glass may be used on at least a portion of the housing 1 directly near the image capturing device 4, which is simple in structure and reduces the space occupied by the heating device 3.
In another implementation, since dryable materials such as rain and snow are generally accumulated on the top of the housing 1, a heating member 3 may be provided on the top of the housing 1 in order to improve drying efficiency.
On this basis, the image acquiring means 4 is configured to acquire the adhesion degree of the dryable object, which may be snow, rain, or other liquid or solid that can be evaporated by heating, in the corresponding area of the self-photographing surface, and the heating means 3 is turned on in the case where the adhesion degree of the dryable object exceeds a first preset threshold value. In the embodiment, the image acquisition component can be used for judging the adhesion degree of the drying object, and whether the shielding lens is rain or snow can be accurately identified through the image, so that the time for starting the heating component 3 can be accurately judged.
Or the vehicle chassis inspection apparatus further includes a temperature detection part configured to detect a temperature of an area around the image acquisition part 4, and the heating part 3 is turned on in a case where the temperature is lower than a second preset threshold. This embodiment can be when detecting low temperature automatic opening heating element 3, prevents that snow from taking place snow in sleet weather, and this kind of judgement mode is simple reliable.
Or the controller 60 can judge the definition of the image captured by the image capturing component 4 through an image recognition algorithm to judge whether to work in rainy or snowy weather, so that the size of the inspection device can be reduced without additionally adding a detection component.
According to the embodiment, when the corresponding area of the shooting surface of the image acquisition component 4 is judged to be covered by rain, snow and the like, the heating function can be automatically started to melt snow and dry surface water drops, the purposes of removing snow and water are achieved, the image shooting effect is guaranteed, the accuracy of vehicle chassis inspection can be improved even in rain and snow weather or under the condition that liquid adheres to an inspection device, and therefore the universality of the vehicle chassis inspection in different climates and different regions is improved.
In some embodiments, as shown in fig. 2 and 3, the inspection apparatus of the present disclosure further includes a housing 1 and a blow assembly 6, the blow assembly 6 including: a gas source configured to provide compressed gas, the gas source comprising an external air compressor, an internal or external cylinder, or the like; an inlet 61 provided on the housing 1 and configured to introduce a compressed gas supplied from a gas source; and at least one set of blow-off ports 62 provided on the housing 1, the blow-off ports 62 facing a surface to be cleaned of the vehicle chassis inspection apparatus, and configured to blow the introduced compressed air toward the surface to be cleaned for decontamination. For example, the surface to be cleaned may be a lens of an optical device, a reflecting surface, an illuminating surface of a fill-in lamp, or the like.
The embodiment can check the surface to be cleaned of the device for automatic cleaning to remove dust or particles from the surface to be cleaned, reduce the false detection rate of the optical device by effective decontamination, and avoid scratching the surface to be cleaned by wiping. Moreover, the maintenance period of the inspection device can be prolonged through automatic cleaning, the maintenance cost and the maintenance difficulty are reduced, and the use experience of equipment is improved. In addition, the automatic cleaning and chassis inspection links can be carried out simultaneously, the machine does not need to be stopped when the surface is cleaned, the service efficiency of the equipment can be improved, and the use experience of a customer on the equipment is improved.
On this basis, the image acquisition means 4 are configured to acquire the degree of soiling on the surface to be cleaned, the blowing assembly 6 being activated when the degree of soiling exceeds a third preset threshold.
This embodiment can carry out the scrubbing when judging that the surface of treating to clean is dirty, can confirm the scrubbing opportunity according to actual dirty degree, prevents to blow the subassembly 6 and frequently starts.
Or when the vehicle speed acquisition component comprises an area laser scanner, the area laser scanner can have a self-detection function and is configured to send out a prompt signal when the dirt sticking degree of the surface to be cleaned is detected to exceed a third preset threshold value.
Or the blowing assembly 6 is turned on at preset time intervals. The embodiment can regularly decontaminate the optical device at a certain time interval without judging the decontamination occasion, is simple to control, can ensure the cleanness of the optical device through the regular decontamination, and improves the working reliability; since the contamination level detection function is not required, the contamination level detection device is not affected by the working environment and can reliably remove contamination even in a severe working environment. The time interval may be set according to the degree of cleanliness of the use environment.
The inspection device of the embodiment can be normally used in areas with more sand, dust and climate, and the blowing assembly 6 can assist in clearing rain and snow, so that the inspection device has strong environmental adaptability. After blowing the rain and snow through the subassembly 6 of blowing, can shorten the time that the heater block 3 was dried with the rain and snow on casing 1 surface, improve the adaptability of inspection device in sleet weather, have very strong practicality when outdoor use, solved the problem that current product sleet season can not normal use.
Specifically, the air blowing assembly 6 further comprises an electromagnetic valve for controlling the on-off of the air path. When cleaning is required, the control part 60 opens the solenoid valve, the air blowing port 62 releases high-pressure air to blow away floating dust and particles on the surface to be cleaned, and the air blowing mode can be continuous or pulse. After cleaning is completed or when the air pressure provided by the air source is lower than the preset pressure, the electromagnetic valve is closed, and the air compressor is started to pressurize.
Further, be equipped with filter and desicator in proper order on the gas circuit between air supply and the mouth 62 of blowing to detach the moisture and the impurity in the outside air, prevent that the impurity that carries in the gas from assaulting and causing the fish tail on treating clean surface, perhaps the moisture in the gas is attached to and is being treated clean surface and go on influence detection or formation of image, can also prevent in addition that each part brings the damage in the gas circuit system.
Furthermore, an overflow valve and a pressure detection component can be further arranged, the overflow valve is arranged on the downstream of the air source, the overflow pressure is adjustable, and the pressure detection component is used for detecting the air supply pressure of the air source so as to adjust the overflow pressure of the overflow valve and realize the pressure adjusting function of the air path system. Therefore, the pressure of the gas circuit can be adjusted according to different dirt sticking degrees, so that sufficient air pressure dirt removal is ensured, compressed gas can be saved, and the problem that the cleaning surface is damaged due to overlarge air pressure is solved. Furthermore, the control unit 60 can also turn on the air compressor in the air supply when the detection value of the pressure detection unit is lower than the preset pressure, thereby ensuring sufficient supply of the compressed air and turning on the decontamination function at any time.
In some embodiments, as shown in fig. 2, the vehicle chassis inspection apparatus is of a portable structure, and further includes a housing 1 and a reflection member provided on the housing 1, the reflection member including an inclined reflection surface 5 for imaging the vehicle chassis, and a photographing surface of the image capturing member 4 opposing the reflection surface 5 including a parallel opposing and an inclined opposing condition for capturing the vehicle chassis image in the reflection surface 5 to indirectly obtain the vehicle chassis image through the reflection surface 5.
As shown in fig. 2, the casing 1 has a substantially flat rectangular parallelepiped structure as a whole, the reflecting member is provided at an end of the casing 1 that is away from the vehicle entrance in the first direction, and the reflecting surface 5 faces the vehicle entrance direction and extends to the edge of the casing 1 in the second direction. The image pickup device 4 is disposed horizontally, the image pickup surface is disposed opposite to the reflecting surface 5, the reflecting surface 5 is gradually spaced from the image pickup surface from the bottom to the top, and the incident angle formed between the image pickup direction and the reflecting surface is an acute angle, for example, 45 °. The image acquisition component 4 is arranged in the middle area of the shell 1 along the second direction, and mounting side walls are arranged on two sides of the image acquisition component and are arranged at intervals with the bottom of the reflecting surface 5. In order to increase the shooting area of the image pickup element 4, the image pickup element 4 may be projected from the mounting side wall and covered with the first window 41 of a curved surface.
The portable inspection device is flexible and convenient to use, the overall height of the inspection device can be reduced due to the structure, and the portable inspection device is directly placed on the ground for use, so that the inspection device is suitable for the inspection requirements of vehicles with lower chassis. Alternatively, the imaging plane of the image capturing section 4 may be disposed obliquely to the horizontal plane.
In the selection, the image acquisition component 4 with smaller size can be selected, and in a specific embodiment, the width of the inspection device is 400mm, the height is 75mm, the appearance is compact, the vehicle with low chassis and narrow wheel track can be inspected, and the portability and the practicability of the system are improved.
Further, this kind of inspection device still includes: a plurality of supplementary lighting sources 2, for example, LED light sources or laser light sources, are disposed in the housing 1 and located at a side of the image capturing unit 4 away from the reflective surface 5 along the first direction, each supplementary lighting source 2 is disposed at an interval along the second direction, and the illuminating surface of the supplementary lighting source 2 can be disposed upward and configured to provide an auxiliary light source to the image capturing unit 4, specifically, the luminance of the vehicle chassis and the reflective surface 5 can be increased, so that the image capturing unit 4 can obtain a clear image. The first direction is consistent with the passing direction of the vehicle, and the second direction is perpendicular to the first direction.
Further, this kind of inspection device still includes: a first window 41 provided on the housing 1 and configured to cover an irradiation surface of the light supplement light source 2; a second window 21 provided on the housing 1 and configured to cover the imaging surface of the image pickup device 4; and the air blowing assembly 6, the air blowing assembly 6 comprises at least one group of air blowing openings 62, and the air blowing openings 62 face the surface to be cleaned. Wherein the surface to be cleaned comprises at least one of the reflective surface 5, the first window 41 and the second window 21. According to the embodiment, the shooting surface and the reflecting surface 5 of the image acquisition component 4 are automatically purged, and the light supplement brightness is kept, so that the definition of the image acquired by the image acquisition component 4 can be increased.
As shown in fig. 2, the image pickup element 4 is provided in the middle area of the housing 1 in the second direction, and at least some of the group blowing openings 62 are located on both sides of the mounting side wall of the first window 41 in the second direction and face at least one of the reflecting surface 5 and the first window 41. The blowing port 62 provided here can simultaneously purge the region corresponding to the reflecting surface 5 and the imaging surface of the image pickup element 4. In order to purge the supplementary light source 2, a blowing port 62 may be provided on the top surface of the housing 1.
Still referring to fig. 2, the housing 1 includes a ramp structure 13, and the ramp structure 13 is inclined outward from top to bottom and is provided at an end of the housing 1 in the first direction near the vehicle-entering direction and/or at an end of the housing 1 in the second direction. When the vehicle normally runs through the inspection device, the chassis is positioned right above the inspection device, the tires on two sides are respectively positioned on the left side and the right side of the inspection device, when the vehicle deviates left and right, the tires can press the top of the inspection device to pass through, the slope structure 13 is arranged, the tires can be prevented from colliding with the inspection device, the running smoothness of the vehicle is improved, and the service life of the inspection device is prolonged.
In some embodiments, as shown in fig. 3, the inspection apparatus is of an in-ground configuration, the image pickup element 4 is provided in the housing 1, and the photographic surface is facing upward. The main body part of the shell 1 is embedded under the ground, so that the height of the exposed ground can be reduced, and the use requirement of a vehicle with a lower chassis can be met; moreover, the inspection device is firmly installed, position dislocation cannot occur in the inspection process, and the inspection accuracy is improved.
As shown in fig. 3, this inspection apparatus further includes: a plurality of light filling light sources 2 establish in casing 1, and establish side by side in the both sides of image acquisition part 4 along the second direction to make both sides light filling balanced, light filling light sources 2's irradiation face up is configured to provide auxiliary light source to image acquisition part 4, in order to obtain clearer image.
Further, this kind of inspection device still includes: the third window 42 is provided in the housing 1 and configured to entirely cover the irradiation surface of the fill-in light source 2 and the imaging surface of the image capturing unit 4, and for example, the third window 42 may be a rectangular long window. And the air blowing assembly 6, the air blowing assembly 6 comprises at least one group of air blowing openings 62, the air blowing openings 62 are arranged at the top of the shell 1 and are positioned at one side of the third window 42 along the first direction, the air blowing openings 62 face the third window 42, and the air blowing openings 62 can be horizontally arranged so as to enable air to be blown along the tangential direction of the third window 42. The air blowing ports 62 can simultaneously blow the image acquisition unit 4 and the supplementary light source 2, and the structure is simple.
Still referring to fig. 3, the housing 1 includes: the top surface of the bottom box 11 is provided with an opening, and the opening is provided with a mounting flange; a cover plate 12 which is arranged on an installation flange at the top of the bottom box 11 and seals the opening; the slope structure 13 is arranged on the cover plate 12 and extends along the second direction, and the slope structure 13 inclines outwards from top to bottom; wherein the second direction is perpendicular to the vehicle passing direction. The slope structures 13 may be provided on both sides of the image pickup element 4 in the first direction.
Specifically, the cover plate 12 is provided with a first mounting block and a second mounting block which are adjacent to each other or arranged at intervals along a first direction, the image acquisition component 4 and the light supplement light source 2 are arranged in the bottom case 11, the upper portion of the image acquisition component is located in the first mounting block, and the third window 42 is arranged at the top of the first mounting block. The top of the second mounting block is higher than the first mounting block, and the air blowing port 62 is arranged on the side wall of the second mounting block facing to and higher than the first mounting block, so that the air flow led out from the air blowing port 62 can blow the surface of the third window 42. For example, the second mounting block is located between the first mounting block and the vehicle entry end in the first direction. The ramp structure 13 may be provided at the end of the first and second mounting blocks remote from each other.
When the inspection device is installed, the whole of the bottom case 11 and the cover plate 12 can be located below the ground, only the first mounting block and the second mounting block are located above the ground, the exposure height can be reduced, and the area of the exposed part of the inspection device can be reduced when the size of the first mounting block and the second mounting block in the first direction is smaller than that of the cover plate 12.
Secondly, the present disclosure also provides a vehicle scanning system, in some embodiments, comprising: the system comprises a ray scanning device 20, a control device and a control device, wherein the ray scanning device 20 is configured to scan the carried articles of the vehicle, such as containers and the like, and comprises a ray source and a detector arranged on a portal, and the detector is used for receiving rays emitted by the ray source to inspect the carried articles of the vehicle; and the inspection apparatus of the above embodiment. The image of the vehicle chassis and the image of the vehicle carried article scanned by the ray scanning device 20 are both associated with vehicle identity information, for example, the vehicle identity information may be a license plate number or a special number.
Specifically, the inspection device may be provided on the floor directly below the gantry of the radiation scanning device 20, or on the floor not reaching the gantry, or on the floor beyond the gantry. The shell 1 of the checking device is provided with an input/output interface, and the vehicle speed acquisition component acquires the vehicle position and the vehicle speed information detected by the detection component 9 in the ray scanning device 20 through the input/output interface. When the detection means 9 detects that the vehicle is coming, the inspection device and the radiation scanning device 20 can be turned on simultaneously. Or the inspection device may be used alone.
The inspection device can adopt at least one of the following power supply modes:
firstly, the inspection device is provided with a plug and can be connected with an external socket to supply power, and the inspection device can meet the long-time use requirement and supply power stably.
Secondly, the inspection device is powered by the power supply of the ray scanning device 20, so that the requirement of setting an external power supply can be reduced, and the inspection device is more flexible to be matched with the ray scanning device 20.
And thirdly, the checking device is powered by a battery, the capacity of the battery can be designed according to the requirement of endurance time, and the mode of replacing the battery can be adopted, so that the continuous working time of the system is prolonged. The mode can improve the flexibility of the use of the inspection device, when the portable inspection device is used, the inspection device can be flexibly transferred among different ray scanning devices 20 according to the requirements without considering the problem of power supply wiring, and the use is convenient.
Furthermore, the inspection apparatus may also be provided with both battery power supply and external power supply, and the control unit 60 is configured to select the power supply strategy according to the time that the inspection apparatus needs to be continuously operated, so as to select the appropriate power supply mode.
Further, the ray scanning device 20 and the inspection device are both provided with a wireless data transmission module 8 for wireless communication. Therefore, a communication cable is not required to be arranged between the ray scanning device 20 and the inspection device, underground wiring is omitted when the underground inspection device is adopted, the cable can be prevented from being contacted when a vehicle passes through the portable inspection device, and the reliability and the safety of the system work are improved.
Specifically, the control unit 60 sends control commands to the respective image acquisition units and the fill-in light source 2 in the inspection apparatus, and the respective image acquisition units upload the vehicle chassis image information to the control unit 60. The control unit 60 of the inspection apparatus and the control unit of the radiation scanning apparatus 20 themselves may be separately provided or may be integrally provided, and the control unit 60 of the inspection apparatus is directly embedded in the control unit of the radiation scanning apparatus 20 itself, so as to further reduce the volume and weight of the inspection apparatus and improve the portability.
When the inspection device is powered by a battery and is in wireless communication with the ray scanning device 20, the inspection device and the ray scanning device 20 physically form two independent components, no wiring is needed, the position of the inspection device is easy to arrange and adjust, and the reliability and safety of the system operation can be improved.
Alternatively, when the inspection apparatus is powered by an external power source or wired network communication is adopted, as shown in fig. 2, a wire through hole 7 may be provided on a side surface of the housing 1 to allow a power line and a communication line to pass through. As shown in fig. 3, the air inlet 61 and the wire passing hole 7 may be provided as one integrated hole 7'.
In some embodiments, the vehicle scanning system of the present disclosure further includes at least one of a license plate recognition device 30, a vehicle type recognition device 40, and a vehicle weighing device 50, and at least one of vehicle identification information obtained by the license plate recognition device 30, vehicle type information obtained by the vehicle type recognition device 40, and weight information obtained by the vehicle weighing device 50 is associated with the vehicle chassis image. The vehicle scanning system is provided with a plurality of input and output interfaces, so that the vehicle chassis image obtained by the inspection device can be bound with other information related to the vehicle, and the system function is richer.
Finally, the present disclosure provides a vehicle chassis inspection method, hereinafter "inspection method", comprising, in some embodiments:
step 101, acquiring running speed information of a vehicle through a vehicle speed acquisition component; and
and 102, determining an image acquisition period according to the acquired running speed information, and acquiring the vehicle chassis image shot by the image acquisition component 4 according to the determined image acquisition period.
Wherein steps 101 and 102 may be performed cyclically during the chassis inspection, step 101 is performed before step 102, and step 102 may be performed by the control unit 60.
The inspection method can adjust and obtain the parameters of the vehicle chassis image according to the vehicle speed, can ensure the definition of the vehicle chassis image when the vehicle changes speed, and prevents the image from fuzzy deformation, thereby improving the accuracy and efficiency of the vehicle chassis inspection.
In the first embodiment, the step 102 of acquiring the vehicle chassis image captured by the image capturing component 4 according to the image capturing cycle specifically includes:
step 201, setting the shooting frequency of the image acquisition component 4 according to the image acquisition cycle;
step 202, the image acquisition component 4 is made to shoot the vehicle chassis image according to the set shooting frequency.
Steps 201 and 202 can be executed sequentially by the control unit 60, and this embodiment can obtain clear and non-deformable images by setting the shooting frequency of the image acquisition unit 4, acquire the number of image acquisition frames as required, reduce the memory occupation of the image acquisition circuit 10, and increase the processing speed.
Further, before step 201, the method further includes:
step 203, judging whether the vehicle reaches the vehicle chassis checking device, if not, setting the initial shooting frequency of the image acquisition component 4 according to the running speed information; if the vehicle is passing, the shooting frequency of the image acquisition part 4 is adjusted in real time according to the running speed information.
The inspection mode can set the shooting frequency matched with the vehicle speed in advance before the vehicle passes through the inspection device, can improve the definition of images acquired by the vehicle in the initial time period of entering the inspection device, and can integrally acquire high-quality chassis images.
In the second embodiment, the step 102 of acquiring the vehicle chassis image captured by the image capturing component 4 according to the image capturing cycle specifically includes:
step 301, enabling the image acquisition component 4 to shoot according to the shooting frequency required when the vehicle passes through at the highest running speed;
and 302, extracting the shot images according to an image acquisition cycle to form the processed shot images.
The steps 301 and 302 may be sequentially performed by the image capturing circuit 10, for example, a batch data uploading manner may be adopted, and after the image with the preset duration is captured in the step 301, the data processing speed may be increased by performing the decimation processing in the step 302.
In the third embodiment, the step 102 of acquiring the vehicle chassis image captured by the image capturing component 4 according to the image capturing cycle specifically includes:
step 401, determining the number of frames that the image acquisition component 4 needs to acquire within a preset movement distance;
step 402, determining an image acquisition period according to the number of frames required to be acquired by the vehicle within a preset movement distance.
The embodiment can acquire the chassis image in an external triggering mode according to the distance parameter, and can reduce the real-time requirement on the image acquisition component 4.
The three embodiments can ensure the obtained chassis image of the vehicle to be clear and reduce the image distortion by introducing the running speed information of the vehicle. Moreover, the vehicle can be judged to enter and leave the checking device according to the detection part 9, and the image acquisition is turned on or off in time, so that the power consumption of the device and the memory occupied by the control part are reduced.
Those of ordinary skill in the art will appreciate that the control components and algorithm steps of the present disclosure can be implemented in electronic hardware, computer software, or combinations of both. And the software modules may be disposed in any form of computer storage media.
The present disclosure provides a vehicle chassis inspection device and a vehicle scanning system. The principles and embodiments of the present disclosure are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present disclosure. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present disclosure without departing from the principle of the present disclosure, and such improvements and modifications also fall within the scope of the claims of the present disclosure.
Claims (23)
1. A vehicle chassis inspection device, characterized by comprising:
a vehicle speed acquisition component configured to acquire running speed information of a vehicle for determining an image acquisition cycle;
an image acquisition section (4) configured to capture a vehicle chassis image; and
and the image acquisition circuit (10) is connected with the vehicle speed acquisition component and the image acquisition component (4) and is configured to acquire the vehicle chassis image shot by the image acquisition component (4) according to the image acquisition cycle.
2. The vehicle chassis inspection device according to claim 1,
the vehicle speed acquisition means includes detection means (9) configured to detect a position and a traveling speed of the vehicle; or
The vehicle speed acquisition means is configured to acquire the position and running speed information of the vehicle from detection means (9) other than the vehicle chassis inspection device.
3. The vehicle chassis inspection device according to claim 1, wherein a photographing frequency of the image acquisition section (4) is set according to a determined image capturing period.
4. The vehicle chassis inspection device according to claim 3, further comprising a frequency adjustment circuit (10A) connected to the image acquisition means (4) and configured to set an initial photographing frequency of the image acquisition means (4) according to the running speed information before the vehicle reaches the vehicle chassis inspection device, and adjust the photographing frequency of the image acquisition means (4) in real time according to the running speed information during the vehicle passes through the vehicle chassis inspection device.
5. The vehicle chassis inspection device according to claim 1, further comprising a frequency adjustment circuit (10A) connected to the image acquisition means (4) and configured to cause the image acquisition means (4) to perform imaging at an imaging frequency required when a vehicle passes at a maximum traveling speed; the image acquisition circuit (10) is configured to decimate the captured image by the image acquisition period to form a processed captured image.
6. The vehicle chassis inspection device according to claim 1, wherein the image capturing period is determined according to the number of frames that the image capturing section (4) needs to capture within a preset moving distance of the vehicle.
7. The vehicle chassis inspection device according to any one of claims 1 to 6, further comprising a heating unit (3) disposed near the image capturing unit (4) for performing drying.
8. The vehicle chassis inspection device according to claim 7, wherein the image acquisition means (4) is configured to acquire a degree of adhesion of the dryable object to the corresponding area of the self-photographed surface, and the heating means (3) is turned on in a case where the degree of adhesion of the dryable object exceeds a first preset threshold; and/or
The vehicle chassis inspection device further comprises a temperature detection means configured to detect a temperature of an area around the image acquisition means (4), the heating means (3) being turned on if the temperature is lower than a second preset threshold.
9. The vehicle chassis inspection device according to any one of claims 1 to 6, further comprising a housing (1) and a blow-off assembly (6), the blow-off assembly (6) comprising:
a gas source configured to provide a compressed gas;
a gas inlet (61) provided on the housing (1) and configured to introduce a compressed gas provided by the gas source; and
at least one group of air blowing openings (62) are arranged on the shell (1), the air blowing openings (62) face to the surface to be cleaned of the vehicle chassis inspection device, and the air blowing openings are configured to enable introduced compressed air to blow to the surface to be cleaned for decontamination.
10. The vehicle chassis inspection device according to claim 9, wherein the image acquisition means (4) is configured to acquire a degree of soiling on the surface to be cleaned, the air blowing assembly (6) being turned on when the degree of soiling exceeds a third preset threshold; or
The blowing assembly (6) is started according to a preset time interval.
11. The vehicle chassis inspection device according to claim 1, wherein the vehicle chassis inspection device is of a portable structure, the vehicle chassis inspection device further comprises a housing (1) and a reflection member provided on the housing (1), the reflection member including a reflection surface (5) inclined for imaging a vehicle chassis, a photographing surface of the image pickup member (4) being opposed to the reflection surface (5).
12. The vehicle chassis inspection device according to claim 11, further comprising: the light supplementing light sources (2) are arranged in the shell (1), are positioned on one side, away from the reflecting surface (5), of the image acquisition part (4) along a first direction, are arranged at intervals along a second direction and are configured to provide auxiliary light sources for the image acquisition part (4); wherein the first direction is consistent with the vehicle passing direction, and the second direction is perpendicular to the first direction.
13. The vehicle chassis inspection device according to claim 12, further comprising:
a first window (41) provided on the housing (1) and configured to cover an irradiation surface of the fill-in light source (2);
a second window (21) provided on the housing (1) and configured to cover a shooting surface of the image acquisition section (4); and
a blowing assembly (6), wherein the blowing assembly (6) comprises at least one group of blowing openings (62), and the blowing openings (62) face to the surface to be cleaned;
wherein the surface to be cleaned comprises at least one of the reflective surface (5), the first window (41) and the second window (21).
14. The vehicle chassis inspection device according to claim 13, wherein the image pickup element (4) is provided in a middle region of the housing (1) in the second direction, and at least some of the groups of blow openings (62) are located on both sides of a mounting side wall of the first window (41) in the second direction, and face at least one of the reflection surface (5) and the first window (41).
15. The vehicle chassis inspection device according to claim 11, wherein the housing (1) includes a slope structure (13), and the slope structure (13) is inclined outward from top to bottom and provided at an end of the housing (1) in the first direction close to the vehicle entrance direction and/or an end of the housing (1) in the second direction.
16. The vehicle chassis inspection device according to claim 1, wherein the vehicle chassis inspection device is of an in-ground structure, and further comprises a housing (1), and the image pickup element (4) is provided in the housing (1) with a photographic surface facing upward.
17. The vehicle chassis inspection device according to claim 16, further comprising: the multiple light supplementing light sources (2) are arranged in the shell (1), arranged on two sides of the image acquisition component (4) in the second direction side by side and configured to provide auxiliary light sources for the image acquisition component (4); wherein the second direction is perpendicular to a vehicle passing direction.
18. The vehicle chassis inspection device according to claim 17, further comprising:
a third window (42) provided on the housing (1) and configured to entirely cover an irradiation surface of the fill-in light source (2) and a shooting surface of the image acquisition unit (4); and
the blowing assembly (6) comprises at least one group of blowing openings (62), the blowing openings (62) are formed in the top of the shell (1) and located on one side of the third window (42) along a first direction, and the blowing openings (62) face the third window (42).
19. The vehicle chassis inspection device according to claim 16, wherein the housing (1) includes:
the top surface of the bottom box (11) is provided with an opening;
the cover plate (12) is arranged at the top of the bottom box (11) and closes the opening; and
the slope structure (13) is arranged on the cover plate (12) and extends along a second direction, and the slope structure (13) inclines outwards from top to bottom; wherein the second direction is perpendicular to a vehicle passing direction.
20. A vehicle scanning system, comprising:
a ray scanning device (20) configured to scan a vehicle-carried item; and
the vehicle chassis inspection device according to any one of claims 1 to 19;
wherein the vehicle chassis image and the image scanned by the ray scanning device (20) on the vehicle carried article are both associated with vehicle identity information.
21. The vehicle scanning system of claim 20, wherein the vehicle undercarriage inspection device is battery powered.
22. The vehicle scanning system of claim 20, wherein said radiation scanning device (20) is in wireless communication with said vehicle undercarriage inspection device.
23. The vehicle scanning system according to claim 20, further comprising at least one of a license plate recognition device (30), a vehicle type recognition device (40), and a vehicle weighing device (50), wherein the vehicle chassis image is associated with at least one of vehicle identification information obtained by the license plate recognition device (30), vehicle type information obtained by the vehicle type recognition device (40), and weight information obtained by the vehicle weighing device (50).
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| CN201920664546.5U CN209821410U (en) | 2019-05-10 | 2019-05-10 | Vehicle chassis inspection device and vehicle scanning system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031911A (en) * | 2019-05-10 | 2019-07-19 | 同方威视技术股份有限公司 | Vehicle chassis check device, method and vehicle scan system |
| CN111964918A (en) * | 2020-08-11 | 2020-11-20 | 王立虎 | Thing networking vehicle scanning diagnosis appurtenance |
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2019
- 2019-05-10 CN CN201920664546.5U patent/CN209821410U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031911A (en) * | 2019-05-10 | 2019-07-19 | 同方威视技术股份有限公司 | Vehicle chassis check device, method and vehicle scan system |
| CN111964918A (en) * | 2020-08-11 | 2020-11-20 | 王立虎 | Thing networking vehicle scanning diagnosis appurtenance |
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