CN216434399U - Imaging device for human body detection - Google Patents
Imaging device for human body detection Download PDFInfo
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- CN216434399U CN216434399U CN202123140755.6U CN202123140755U CN216434399U CN 216434399 U CN216434399 U CN 216434399U CN 202123140755 U CN202123140755 U CN 202123140755U CN 216434399 U CN216434399 U CN 216434399U
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Abstract
The embodiment of the application provides an imaging device for human body detection, which is characterized by comprising at least one detection unit, wherein the detection unit comprises: a support frame; a millimeter wave imaging device; the driving device is arranged in the supporting frame and connected with the millimeter wave imaging device so as to drive the millimeter wave imaging device to move along the height direction of the supporting frame; the counterweight assembly comprises a first rolling part, a counterweight block and a rope, the first rolling part is arranged on the upper portion of the supporting frame, and the rope bypasses the first rolling part and connects the millimeter wave imaging device with the counterweight block. When the driving device drives the millimeter wave imaging device to move up and down, the balancing weight can counteract a part of gravity of the millimeter wave imaging device, so that the driving device can drive the millimeter wave imaging device to move only by a small force, and further the power loss of the driving device is favorably reduced.
Description
Technical Field
The application relates to the technical field of detection equipment, in particular to imaging equipment for human body detection.
Background
Common imaging devices for human body detection include X-ray detectors, metal detectors, infrared detectors, and millimeter wave imaging detection devices.
Among the above-mentioned several kinds of human body detection devices, the X-ray detector has a certain radiation, and the accumulated radiation may cause damage to the human body, possibly causing cancer diseases, and cannot be used for children and pregnant women; the metal detector can only detect metal dangerous articles carried by a human body, and can not detect nonmetal dangerous articles; the infrared detector has poor penetrating power to human clothes, so that the accuracy of a detection result is poor. In addition, the human body security check equipment needs manual assistance to carry out detection, and the detection speed is low and the detection efficiency is low.
Millimeter wave imaging detection equipment based on millimeter wave imaging technique when being used as human safety inspection equipment, can be quick carry out the safety inspection scanning formation of image to the human body to have the advantage of safety, reliable, high-resolution, also not have radiation injury to the personnel of being examined.
Millimeter wave check out test set structure among the correlation technique is comparatively complicated, and the power that millimeter wave image device consumeed when carrying out the up-and-down scanning motion is great, is unfavorable for the energy saving, and then is unfavorable for millimeter wave check out test set to carry out quick scanning.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide an imaging device for human body detection, so as to achieve the purpose of reducing power consumed during up-and-down scanning of a millimeter wave imaging device. The specific technical scheme is as follows:
the embodiment of the application provides an imaging device for human body detection, which is characterized by comprising at least one detection unit, wherein the detection unit comprises: a support frame; a millimeter wave imaging device; the driving device is arranged in the supporting frame and connected with the millimeter wave imaging device so as to drive the millimeter wave imaging device to move along the height direction of the supporting frame; the counterweight assembly comprises a first rolling part, a counterweight block and a rope, the first rolling part is arranged on the upper portion of the supporting frame, and the rope bypasses the first rolling part and connects the millimeter wave imaging device with the counterweight block.
The imaging device of the embodiment of the application realizes the purpose of driving the millimeter wave imaging device to scan quickly by a small driving force through the force balance principle. The drive arrangement drive in the braced frame moves rather than the direction of height of connecting millimeter wave imaging device along braced frame, and simultaneously, be provided with first rolling member at braced frame's top, the winding has the rope on the first rolling member, millimeter wave imaging device and balancing weight are connected respectively to the both ends of rope, when drive arrangement drive millimeter wave imaging device up-and-down motion, a part gravity of millimeter wave imaging device can be offset to the balancing weight, like this, drive arrangement only needs very little power can drive millimeter wave imaging device motion, and then be favorable to reducing drive arrangement's power loss. Further, if the weight of the counterweight is set to be equal to the weight of the millimeter wave imaging device, the influence of the gravity action of the millimeter wave imaging device can be completely ignored when the driving device drives the millimeter wave imaging device, so that the output power of the driving device only depends on the magnitude of other external forces such as friction force in the movement process and the transmission efficiency loss, and the power loss of the driving device is further reduced.
In addition, according to the imaging device of the embodiment of the application, the following additional technical features can be provided:
in some embodiments of the present application, the counterweight assembly further comprises a second roller disposed at a lower portion of the support frame, the cable further passing around the second roller.
In some embodiments of the present application, the number of the first rolling members is at least one.
In some embodiments of the present application, the number of the second rolling members is at least one.
In some embodiments of the present application, the number of the second rolling members is equal to the number of the first rolling members.
In some embodiments of the present application, a first guide structure and a second guide structure are disposed in the support frame, the first guide structure is configured to move the weight block along a height direction of the support frame, and the second guide structure is configured to move the millimeter wave imaging device along the height direction of the support frame.
In some embodiments of the present application, the driving device includes a servo motor, a speed reducer connected to the servo motor, and a linear motion mechanism connected to the speed reducer, and the linear motion mechanism is connected to an output shaft of the speed reducer.
In some embodiments of the present application, the linear motion mechanism may be, for example, a synchronous belt linear motion module, and the linear motion mechanism includes an upper synchronous pulley fixed to the top of the supporting frame, a lower synchronous pulley fixed to the bottom of the supporting frame, a synchronous belt wound around the upper synchronous pulley and the lower synchronous pulley, a worktable located on the synchronous belt, and photoelectric switches disposed at the upper end and the lower end of the linear motion mechanism;
the workbench is connected with the millimeter wave imaging device and is used for driving the millimeter wave imaging device to move together; the photoelectric switch is matched with the workbench to limit the motion range of the millimeter wave imaging device.
In some embodiments of the present application, a cable drag chain for installing a cable of the millimeter wave imaging device is further disposed in the support frame, and/or an electric cabinet is further disposed in the support frame.
In some embodiments of the present application, the number of the detecting units is two and arranged oppositely, and the image forming apparatus further includes a step table arranged between the two detecting units.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural view of an image forming apparatus of an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a detecting unit according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural view of a weight assembly according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram illustrating an assembly of the first guide structure and the second guide structure with the counterweight block and the millimeter wave imaging device, respectively, according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram illustrating an assembly of another first guide structure and a second guide structure with a counterweight and a millimeter wave imaging device, respectively, according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a driving device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
The embodiment of the application provides an imaging device 10 for human body detection, as shown in fig. 1 and 3, comprising at least one detection unit 100, wherein the detection unit 100 comprises a support frame 110, a millimeter wave imaging device 120, a driving device 130 and a counterweight component 140. The driving device 130 is disposed in the supporting frame 110, the driving device 130 is connected to the millimeter wave imaging device 120 to drive the millimeter wave imaging device 120 to move along the height direction of the supporting frame 110, the counterweight assembly 140 includes a first rolling member 141, a counterweight block 142, and a rope 143, the first rolling member 141 is disposed at the upper portion of the supporting frame 110, and the rope 143 bypasses the first rolling member 141 and connects the millimeter wave imaging device 120 with the counterweight block 142.
In the imaging apparatus 10 for human body detection, the scanning devices thereon are driven by the driving device 130 to move up and down, so as to scan the whole body of the human body. The driving device 130 is often connected to the scanning device separately, so the driving device 130 needs to overcome the gravity of the scanning device to drive the scanning device to move up and down in addition to overcoming external forces such as friction, and thus, the driving device 130 consumes a large amount of power.
In order to reduce the power loss of the driving device 130, the embodiment of the present application designs an imaging apparatus 10 that realizes driving the millimeter wave imaging device 120 with a small driving force to scan quickly by the principle of force balance. The main structure of the device comprises a support frame 110, a millimeter wave imaging device 120, a driving device 130 and a counterweight assembly 140, wherein the counterweight assembly 140 comprises a first rolling member 141, a counterweight 142 and a rope 143. The driving device 130 in the supporting frame 110 drives the millimeter wave imaging device 10 connected with the driving device to move along the height direction of the supporting frame 110, meanwhile, the top of the supporting frame 110 is provided with the first rolling member 141, the rope 143 is wound on the first rolling member 141, two ends of the rope 143 are respectively connected with the millimeter wave imaging device 120 and the counterweight block 142, when the driving device 130 drives the millimeter wave imaging device 10 to move up and down, the counterweight block 142 can counteract a part of gravity of the millimeter wave imaging device 120, in this way, the driving device 130 only needs a small force to drive the millimeter wave imaging device 10 to move, and further, the power loss of the driving device 130 is favorably reduced. Further, if the weight of the weight block 142 is set to be equal to the weight of the millimeter wave imaging device 120, the influence of the gravity of the millimeter wave imaging device 120 can be completely ignored when the millimeter wave imaging device 120 is driven by the driving device 130, and the output power of the driving device 130 depends only on the magnitude of other external forces such as friction force during the movement and the transmission efficiency loss, which is beneficial to further reducing the power loss of the driving device 130.
In some embodiments of the present application, as shown in fig. 3, the counterweight assembly 140 further includes a second rolling member 144, the second rolling member 144 is disposed at a lower portion of the support frame 110, and the rope 143 further passes around the second rolling member 144. The rope 143 passes through the first rolling member 141 and then passes through the second rolling member 144, so that the rope 143 forms a closed loop, and thus, the counterweight 142 and the millimeter wave imaging device 120 can move along the track of the closed loop of the rope 143, which is beneficial to making the movement of the counterweight 142 and the millimeter wave imaging device 120 more stable. It is understood that the cable 143 of the present application may be a cable, which is connected end to form a closed loop after passing around the first rolling member 141 and the second rolling member 144, and the weight 142 and the millimeter wave imaging device 120 are respectively located at two ends of the cable 143 separated by the first rolling member 141; alternatively, the rope 143 of the present application may be two ropes, specifically, as shown in fig. 2, after the first rope 1431 winds around the first rolling member 141, two ends of the first rope 1431 are respectively connected to the top of the weight block 142 and the top of the millimeter wave imaging device 120 through a buckle, and after the second rope 1432 winds around the second rolling member 144, two ends of the second rope 1432 are respectively connected to the bottom of the weight block 142 and the bottom of the millimeter wave imaging device 120 through a buckle, so that the two ropes may also form a closed loop. The manner in which the cords 143 form the closed loop may be selected by the individual according to particular needs.
In some embodiments of the present application, the number of the first rolling members 141 is at least one. In the embodiment of the present application, the first rolling members 141 serve as supporting points for the rope 143 and allow the rope 143 to roll around, and thus, the number of the first rolling members 141 is at least one.
Of course, if the number of the first rolling members 141 is one, in order to ensure a certain gap between the weight blocks 142 located at both sides of the first rolling members 141 and the millimeter wave imaging device 120 to avoid the interference of the movement thereof, the outer dimension of the first rolling members 141 must be large, which is not favorable for reducing the volume of the detection unit 100, and therefore, the case where the number of the first rolling members 141 is two is preferable. In practical applications, the number of the first rolling members 141 and the distance between the first rolling members 141 may be flexibly arranged according to the requirements of people. The first rolling element 141 may be, for example, a roller, a drum, or other components capable of performing a rolling transmission, and the present application is not limited thereto.
Specifically, as shown in fig. 2, the first rolling member 141 is two fixed pulleys 145 disposed on the top of the supporting frame 110, the rope 143 is sequentially wound around the two fixed pulleys 145, and the counterweight block 142 and the millimeter wave imaging device 120 are respectively disposed at two ends of the rope 143, so as to facilitate keeping a certain gap between the counterweight block 142 and the millimeter wave imaging device 120, and avoid mutual interference, and at the same time, facilitate reducing the size of the first rolling member 141, thereby facilitating reducing the size of the detection unit 100.
In some embodiments of the present application, the number of the second rolling members 144 is at least one. Also, the second rolling member 144 functions as a supporting point of the rope 143 and allows the rope 143 to roll thereon, and thus, the number of the second rolling member 144 is at least one.
If the number of the second rolling members 144 is one, in order to ensure a certain gap between the weight block 142 and the millimeter wave imaging device 120 to avoid the interference of the movement thereof, the external dimensions of the second rolling members 144 must be large, which is not favorable for reducing the volume of the detection unit 100, and therefore, the case where the number of the second rolling members 144 is two is preferable. In practical applications, the number of the second rolling members 144 and the spacing between the second rolling members 144 can be flexibly arranged according to the requirements of people. The second rolling element 144 may be, for example, a roller, a drum, or other components capable of performing a rolling transmission, and the application is not limited thereto. For example, as shown in fig. 1, the second rolling member 144 is two fixed pulleys 145 provided at the bottom of the support frame 110.
In some embodiments of the present application, the number of the second rolling members 144 is equal to the number of the first rolling members 141. In order to make the structure of the detection unit 100 simpler and to make the movement of the millimeter wave imaging device 120 smoother, the number of the first rolling member 141 and the second rolling member 144 may be equal, and preferably, as shown in fig. 2 and referring to fig. 1, the first rolling member 141 is two fixed pulleys 145 on the top of the supporting frame 110, and the second rolling member 144 is two fixed pulleys 145 on the bottom of the supporting frame 110, so that the movement of the millimeter wave imaging device 120 is ensured to be smoother, and the size of the first rolling member 141 and the size of the second rolling member 144 are reduced while a certain gap is ensured between the counterweight block 142 and the millimeter wave imaging device 120. In addition, the use of the fixed pulley 145 of the same specification to constitute the first roller 141 and the second roller 144 is also advantageous in reducing the manufacturing cost of the image forming apparatus 10.
In some embodiments of the present application, as shown in fig. 2, a first guide structure 111 and a second guide structure 112 are disposed in the support frame 110, the first guide structure 111 is configured to move the weight block 142 along the height direction of the support frame 110, and the second guide structure 112 is configured to move the millimeter wave imaging device 120 along the height direction of the support frame 110. The distance separating one side of the support frame 110 from the first guide structure 111 and the second guide structure 112, respectively, can be flexibly set. Because millimeter wave imaging device 120 and balancing weight 142 move according to the movement track of rope 143, if rope 143 appears because of the condition of external force shake in the roll in-process, millimeter wave imaging device 120 also can correspondingly appear rocking, is unfavorable for its stability of scanning the human body like this. Therefore, the first guide structure 111 and the second guide structure 112 may be provided within the support frame 110 of the detection unit 100 to assist the millimeter wave imaging device 120 and the weight block 142 in moving. Specifically, as shown in fig. 4 and referring to fig. 2, the first guide structure 111 and the second guide structure 112 are both a groove 113, and bosses 114 are respectively provided on the millimeter wave imaging device 120 and the weight block 142 to be structurally matched with the groove 113, so that the millimeter wave imaging device 120 can slide on the second guide structure 112, and the weight block 142 can slide on the first guide structure 111; alternatively, as shown in fig. 5, referring to fig. 2, the first guide structure 111 and the second guide structure 112 are both bosses 114, and the millimeter wave imaging device 120 and the counterweight block 142 are respectively provided with grooves matched with the bosses 114, so that the millimeter wave imaging device 120 can slide on the second guide structure 112, and the counterweight block 142 can slide on the first guide structure 111; alternatively, the first guide structure 111 and the second guide structure 112 are a combination of a groove 113 and a boss 114, and the millimeter wave imaging device 120 and the counterweight block 142 are respectively provided with the boss 114 and the groove 113 adapted to the first guide structure 111 and the second guide structure 112. The embodiments of the present application are not limited.
In some embodiments of the present application, as shown in fig. 6, the driving device 130 includes a servo motor 131, a speed reducer 132 connected to the servo motor 131, and a linear motion mechanism 133 connected to the speed reducer 132, the linear motion mechanism 133 being connected to an output shaft of the speed reducer 132. The driving device 130 may provide a driving force for the millimeter wave imaging device 120 to move in the height direction of the support frame 110. The linear motion mechanism 133 may be various, for example, a timing belt linear motion module 134, a ball screw linear motion module, and a linear motor.
In a specific example, as shown in fig. 6, the linear motion mechanism 133 is a timing belt linear motion module 134. The linear motion mechanism 133 may mainly include an upper synchronizing wheel 135 fixed to the top of the supporting frame 110 and connected to the speed reducer 132, a lower synchronizing wheel 136 fixed to the bottom of the supporting frame, a synchronous belt 137 wound around the upper synchronizing wheel and the lower synchronizing wheel, a worktable 138 located on the synchronous belt, and photoelectric switches 139 disposed at upper and lower ends of the linear motion mechanism 133. The specific installation positions of the photoelectric switches 139 at both ends of the linear motion mechanism 133 may be determined as required. In the embodiment of the present application, the linear motion mechanism 133 has a simple structure, is convenient to assemble, and has a stable and reliable motion process. The millimeter wave imaging device 120 is connected to the table 138 through a connecting member, and can move linearly up and down along with the table 138. In addition, the upper and lower ends of the linear motion mechanism 133 are respectively provided with a photoelectric switch 139, and when the worktable 138 moves upwards to trigger the upper photoelectric switch 139, the photoelectric switch 139 can control the servo motor 131 to stop rotating, so that the worktable 138 cannot continue to move upwards. Similarly, when the table 138 moves downward to trigger the lower photoelectric switch 139, the photoelectric switch 139 can control the servo motor 131 to stop rotating, so that the table 138 cannot move downward. Therefore, the range of the up-and-down movement of the table 138 is limited by the two photoelectric switches 139, so that the millimeter wave imaging device 120 can be ensured to move in the limited range, and the movement to an invalid region is avoided. That is, the photoelectric switch 139 cooperates with the table 138 for limiting the range of motion of the millimeter wave imaging device 120.
In some embodiments of the present application, as shown in fig. 2, a cable tow 115 for mounting a cable of millimeter wave imaging device 120 is also disposed within support frame 110. Specifically, the cable (including the power line, the signal line, etc.) of the millimeter wave imaging device 120 may pass through the inner cavity of the cable drag chain 115, and during the process of the millimeter wave imaging device 120 performing the lifting motion, the cable of the millimeter wave imaging device 120 is always located in the inner cavity of the cable drag chain 115, so that the cable of the millimeter wave imaging device 120 may be protected by the cable drag chain 115, thereby facilitating the improvement of the reliability of the detection unit 100.
In some embodiments of the present application, as shown in fig. 2, an electrical cabinet 116 is also disposed within the support frame 110. The electric cabinet 116 refers to a case for accommodating electronic components for controlling the operation of the sensing unit 100. Generally, a plurality of switches are disposed on the electric cabinet, so that a worker can conveniently control the operation state of the image forming apparatus 10 through the electric cabinet 116. Meanwhile, the electric control box 116 also has a protection effect on the electronic components.
In some embodiments of the present application, the number of detection units 100 is at least one. The imaging device 10 of the embodiment of the present application, wherein the control system of the detecting unit 100 is independently controlled, the detecting units 100 do not affect each other, and each detecting unit 100 can be used as an independent product, so that the imaging device 10 can include a plurality of detecting units 100, and therefore, the imaging device 10 can scan a plurality of persons at the same time, which is beneficial to improving the utilization rate of the imaging device 10.
In some embodiments of the present application, the number of the detecting units 100 is two and are oppositely disposed, and the image forming apparatus 10 further includes a footrest 150 disposed between the two detecting units 100. As shown in fig. 1, a person to be detected stands on the pedal, and then the two detecting units 100 are respectively turned on, and at this time, the two detecting units 100 scan the front and the back of one person at the same time, which is beneficial to improving the scanning efficiency, and further beneficial to improving the working efficiency of the imaging device 10.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (10)
1. An imaging apparatus for human detection, comprising at least one detection unit, the detection unit comprising:
a support frame;
a millimeter wave imaging device;
the driving device is arranged in the supporting frame and connected with the millimeter wave imaging device so as to drive the millimeter wave imaging device to move along the height direction of the supporting frame;
the counterweight assembly comprises a first rolling part, a counterweight block and a rope, the first rolling part is arranged on the upper portion of the supporting frame, and the rope bypasses the first rolling part and connects the millimeter wave imaging device with the counterweight block.
2. The imaging apparatus for human detection according to claim 1, wherein the counterweight assembly further includes a second rolling member provided at a lower portion of the support frame, the rope further passing around the second rolling member.
3. The imaging apparatus for human detection according to claim 1, wherein the number of the first rolling members is at least one.
4. The imaging apparatus for human detection according to claim 2, wherein the number of the second rolling members is at least one.
5. The imaging apparatus for human detection according to claim 4, wherein the number of the second rollers is equal to the number of the first rollers.
6. The imaging apparatus for human detection according to claim 1, wherein a first guide structure and a second guide structure are provided in the support frame, the first guide structure is configured to move the weight block in a height direction of the support frame, and the second guide structure is configured to move the millimeter wave imaging device in the height direction of the support frame.
7. The imaging apparatus for human body detection according to claim 1, wherein the driving device includes a servo motor, a reducer connected to the servo motor, and a linear motion mechanism connected to the reducer, the linear motion mechanism being connected to an output shaft of the reducer.
8. The imaging device for human body detection according to claim 7, wherein the linear motion mechanism comprises an upper synchronous pulley fixed on the top of the support frame, a lower synchronous pulley fixed on the bottom of the support frame, a synchronous belt wound around the upper synchronous pulley and the lower synchronous pulley, a workbench positioned on the synchronous belt, and photoelectric switches arranged at the upper end and the lower end of the linear motion mechanism;
the workbench is connected with the millimeter wave imaging device and is used for driving the millimeter wave imaging device to move together; the photoelectric switch is matched with the workbench to limit the motion range of the millimeter wave imaging device.
9. The imaging apparatus for human body detection according to claim 1, wherein a cable drag chain for installing a cable of the millimeter wave imaging device is further provided in the support frame, and/or an electric cabinet is further provided in the support frame.
10. The imaging apparatus for human detection according to any one of claims 1 to 9, wherein the number of the detection units is two and arranged oppositely, the imaging apparatus further comprising a step table arranged between the two detection units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123140755.6U CN216434399U (en) | 2021-12-14 | 2021-12-14 | Imaging device for human body detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123140755.6U CN216434399U (en) | 2021-12-14 | 2021-12-14 | Imaging device for human body detection |
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| CN216434399U true CN216434399U (en) | 2022-05-03 |
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| CN202123140755.6U Active CN216434399U (en) | 2021-12-14 | 2021-12-14 | Imaging device for human body detection |
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