Combined mobile switching type human body detection system and method

Abstract

The combined mobile switching human body detection system includes a probe device, a group of detection beds, and a group of guide rails. The probe device includes a probe, a housing, an electrical control device, and a bracket, the probe being either a PET probe or a CT probe, the group of detection beds including a first detection bed and a second detection bed, and the group of guide rails including two parallel longitudinal guide rails and two parallel lateral guide rails. The combined mobile switching human body detection method is performed by the detection system and includes a preparation step (1), a detection step (2), and a repeat detection step (3) in which step (2) is repeated until all patients requiring detection are detected.

Description

Technical Field

[0001] The present invention relates to the technical field of rapid detection of PET or CT, and specifically relates to a composite movement switching type human body detection system and method, which can significantly accelerate the detection speed of PET or CT detection targets in practice and improve the detection efficiency.

Background Art

[0002] When performing PET or CT scans, generally in the current technology, the technical direction of switching type rapid detection is not considered or emphasized. In the current technology, for reasons such as protecting patient privacy, protecting equipment, facilitating communication between doctors and patients, avoiding operation errors, and avoiding excessive fatigue of operators, there is no installation or design for rapid detection (or switching type detection). There is also no consideration of the usage method of rapid installation or switching installation that enables PET or CT devices to quickly switch and detect different patients, quickly detect multiple patients, or continuously provide data. The current technology does not specifically and detailedly consider how to perform such detection.

[0003] However, researching this technology is meaningful. For example, when examining a large number of elderly people together, using general technology requires dedicated time for patients to enter and leave the examination room, change clothes, and communicate with doctors respectively, and this time is artificially prolonged. PET and CT devices are very expensive. In this time-consuming method, since examinations are carried out one by one in order, the examination time is long and it is difficult to reduce the cost of each examination. It is difficult to cope with large-scale examinations (for head PET or CT examinations for screening serious diseases of the elderly, high speed is required even if the scan resolution is low) and situations where a large number of examinations need to be carried out in a short period (examinations during disaster relief activities, intensive medical support in a specific area, etc.).

[0004] Current technology does not offer practical technical solutions or clear technical suggestions for the installation and design of rapid (or switchable) PET or CT scanners; in other words, there is no clear indication of the details of this technical pathway. Current PET or CT scanners (including various installations such as brackets and tracks) are designed for one person at a time, and once one examination is complete, the person must completely leave before the next examination can begin. While this aligns with the doctor-patient relationship in modern hospitals, this conventional setup fails to meet the requirements of situations where large-scale rapid examinations are needed. [Overview of the project]

[0005] In light of the practical problems present in the existing technology described above, there are no practical problems regarding how to install or design rapid (or switchable) PET or CT scanners; practical solutions have been presented, but no specific technical solutions for rapid switchable scanning have been provided. The technical problem that this application solves, in other words, is the technical problem that existing PET or CT scanners are not suitable for rapid switching of patients. Existing PET or CT scanners are only suitable for individual consultations and examinations between doctors and patients, and are not suitable for rapid switching of multiple patients. In other words, the time required for switchable rapid detection is not considered from the design of the device itself. This application is suitable for rapid switching of a large number of patients and can basically avoid wasting examination time. The device is running at full capacity for 80-90% of the time.

[0006] This application provides a composite moving switchable human body detection system including a probe device, a group of detection beds, and a group of guide rails.

[0007] The probe device includes a probe, a housing, an electrical control unit, and a bracket. The probe is hollow and columnar in shape with a circular or regular polygonal cross-section. The outer surface of the probe has a supporting housing, and the bracket connects to and supports the housing, maintaining the probe's central axis horizontally. The probe is either a PET probe or a CT probe.

[0008] The detection bed group includes a first detection bed and a second detection bed. The first detection bed includes a first bed plate and a first fixing frame. The second detection bed includes a second bed plate and a second fixing frame. The first fixing frame is fixed from the front so that the first bed plate is horizontal, and the second fixing frame is fixed from the front so that the second bed plate is horizontal.

[0009] The guide rail group includes two parallel longitudinal guide rails and two parallel transverse guide rails, and the first fixed frame and the second fixed frame move independently on the intersecting longitudinal and transverse guide rails.

[0010] Furthermore, a left auxiliary bed or left auxiliary ladder is provided on the front left end of the vertical guide rail, a right auxiliary bed or right auxiliary ladder is provided on the front right end of the vertical guide rail, each PMT on the probe is connected to an electrical control device, the bracket moves back and forth under the control of a PLC controller, and the auxiliary platform is a staircase-like platform or a multi-step auxiliary ladder.

[0011] The detection system further includes a group of positioning devices having multiple positioning devices, the positioning devices being infrared detection devices or cameras, and at least one positioning device is installed at each of the following locations: the front end of the probe, the intersection of the two guide rails, the left end of the longitudinal guide rail, and the right end of the longitudinal guide rail.

[0012] Furthermore, the entire front and rear detection beds are nonmetallic, or the portion projected vertically during probe movement is nonmetallic, or the portion extending 3 / 4 of the way from the rear end is nonmetallic, and the nonmetallic material is one of the following materials: reinforced laminated glass, epoxy resin rigid sheet, FRP fiberglass sheet, or eco-plastic sheet.

[0013] The composite movement-switching human body detection method performed by the aforementioned composite movement-switching human body detection system is as follows: (1) Preparation step: Position the first detection bed and the second detection bed at the left and right ends of the vertical guide rail, power is supplied to the probe and it is in standby mode, one person to be detected lies down on the first detection bed, the first detection bed is controlled to move to the intersection of the guide rail and then to move backward, the first detection bed is placed in the probe cavity, the probe is a PET probe or a CT probe; (2) Detection step: Detect the person to be detected, and before the scan is completed, another person to be detected lies down on the second detection bed, and after detection is completed, the first detection bed is moved forward to the intersection of the guide rail and then to the left end of the vertical guide rail. (3) Repeat detection step: Repeat step (2) until all patients requiring detection have been detected.

[0014] Furthermore, the surface of the pre-detection bed and the surface of the post-detection bed are provided with at least one positioning block for positioning a person to be detected, and further includes a group of positioning devices including a plurality of positioning devices, the positioning devices being infrared detection devices or cameras, and before detecting a person to be detected in step (2), at least one of the positioning devices determines, based on a signal received, that the current first detection bed or second detection bed is in a predetermined detection position.

[0015] The combined mobile switching human body detection system includes a probe device, a group of detection beds, and a guide rail network. The probe device includes a probe, a housing, an electrical control device, and a bracket. The probe is hollow and columnar in shape with a circular or regular polygonal cross-section. The outer surface of the probe has a supporting housing. The bracket connects to and supports the housing, maintaining the probe's central axis horizontally. Below the bracket are at least four electrical control wheels. The probe is either a PET probe or a CT probe.

[0016] The detection bed group includes a first detection bed and a second detection bed arranged on the left and right sides. The first detection bed includes a first bed plate and a first fixing frame, and the second detection bed includes a second bed plate and a second fixing frame. The first fixing frame horizontally fixes the first bed plate from the front, and the second detection bed horizontally fixes the second bed plate from the front.

[0017] The guide rail group includes at least four lateral guide rails and at least two longitudinal guide rails, and the bracket moves laterally and longitudinally along the guide rail network under the load of the electrically controlled wheels, with each lateral guide rail intersecting each longitudinal guide rail.

[0018] Furthermore, a left auxiliary bed or left auxiliary ladder is provided next to the first detection bed, and a right auxiliary bed or right auxiliary ladder is provided next to the second detection bed. Each PMT on the probe is connected to an electrical control device, and the bracket moves back and forth under the control of a PLC controller. The auxiliary platform is a stepped platform or a multi-step auxiliary ladder. The detection system further includes a group of positioning devices, each of which is an infrared detection device or a camera. At least one positioning device is installed at the front end of the first detection bed, the rear end of the first detection bed, the front end of the second detection bed, and the rear end of the second detection bed.

[0019] The entire front and rear detection beds are nonmetallic, or the portion projected vertically as the probe moves is nonmetallic, or the portion extending 3 / 4 of the way from the rear end is nonmetallic, and the nonmetallic material is one of the following: reinforced laminated glass, epoxy resin rigid sheet, FRP fiberglass sheet, or eco-plastic sheet.

[0020] The composite mobile switching type human body detection method performed by the aforementioned composite mobile switching type human body detection system includes: (1) Preparation step: The first detection bed and the second detection bed are positioned corresponding to the left and right ends of the vertical guide rail, the probe is energized and put into standby mode, one person to be detected lies down on the first detection bed, the probe device is controlled to move to the left end of the vertical guide rail and then to move forward, the first detection bed is placed in the probe cavity, the probe is a PET probe or a CT probe; and (2) Detection step: The person to be detected is detected, and before the scan is completed, another person to be detected lies down on the second detection bed, and after detection is completed, the probe device is moved backward along the vertical guide rail (3) Repeated detection step: Repeat step (2) until all patients requiring detection have been detected.

[0021] Furthermore, the surface of the pre-detection bed and the surface of the post-detection bed are positioning blocks for positioning at least one subject to be detected, and further include a group of positioning devices which include a plurality of positioning devices, the positioning devices being infrared detection devices or cameras, and before detecting a subject in step (2), at least one of the positioning devices determines that the current probe device is in a predetermined detection position based on a signal received.

[0022] A computer-readable storage medium stores a computer program that performs one of the above-described composite movement-switching human body detection methods.

[0023] The beneficial effects of this invention are, firstly, that it overcomes a blind spot in the current technology. While it was generally believed that there was no need to modify PET or CT scans to detect rapid patient switching in current technology, this view is outdated. With the aging population and the decreasing cost of PET and CT scanners, the need to continuously detect multiple people using PET and CT scanners will soon emerge. Disaster relief, physical examinations of medical teams, and intensive physical examinations of the elderly all urgently require PET and CT scanners capable of continuously detecting multiple people. The actual demand in this regard is very pressing, but current technology lacks relevant settings, and general engineers have not yet envisioned technological development in this direction. Secondly, head PET and CT scanners are attracting widespread interest from industry. Under low-demand conditions, PET and CT scanners are becoming increasingly miniaturized, meeting needs such as in-vehicle applications. However, the industry has not yet recognized the potential for combining this with rapid frontal detection. Nevertheless, this application will be widely valued in the near future. Assuming that PET and CT radiation sources and probes are sufficiently compact, practical technical proposals suitable for on-site detection, rapid detection, and rapid detection of multiple individuals have great practical significance. Furthermore, this application provides not just a concept, but also very specific operating modes. It offers feasible and practical methods depending on the current operating modes of PET or CT. One is to combine the movement of the PET or CT device with the static positioning of the subject (a special design of the detection bed allows the probe to move back and forth, enabling repeated detection of multiple people). Another is that the PET or CT device itself does not move (after all, moving it carries the risk of re-debugging), but the subject can be continuously detected through the cooperation of a movable detection bed and guide rails. This belongs to the specific concept proposed in this application, solves practical problems, and possesses excellent substantial features. The PET or CT probe of this application can meet the implementation requirements if it is of the hollow column type, and longer whole-body probes or shorter probes that can detect only parts of the body, such as general chest PET or CT, head PET or CT, or abdominal PET or CT (approximately 20-40 cm in length), can also be used. In practice, the four PET or CT probes mentioned above are the most common.Alternatively, a whole body CT (long in the radial direction) or a head CT (short in the radial direction) is used.

Brief Description of the Drawings

[0024] To more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the drawings necessary for explaining the embodiments or the prior art are briefly introduced below. Obviously, the drawings described below are only a part of the embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without creative work.

[0025] [Figure 1] It is a schematic diagram of the first typical embodiment. [Figure 2] It is a schematic diagram of the second typical embodiment.

Modes for Carrying Out the Invention

[0026] Hereinafter, by referring to the drawings and specifically describing the preferred embodiments of the present invention, the advantages and features of the present invention can be easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined. <0000****>Example 1

[0027] The composite movement switching type human body detection system includes a probe device, a detection bed group, and a guide rail group.

[0028] The probe device includes a probe, a housing, an electric control device, and a bracket. The probe is in the shape of a hollow column and has a circular or regular polygon cross-section. The outer surface of the probe has a housing for support. The bracket connects and supports the housing and maintains the central axis of the probe horizontally. The probe is a PET probe or a CT probe.

[0029] The detection bed group includes a first detection bed and a second detection bed. The first detection bed includes a first bed plate and a first fixing frame. The second detection bed includes a second bed plate and a second fixing frame. The first fixing frame is fixed from the front so that the first bed plate is horizontal, and the second detection bed is fixed from the front so that the second bed plate is horizontal.

[0030] The guide rail group includes two parallel longitudinal guide rails and two parallel transverse guide rails, and the first fixed frame and the second fixed frame move independently along the intersecting longitudinal and transverse guide rails.

[0031] Furthermore, a left auxiliary bed or left auxiliary ladder is provided on the front left end of the vertical guide rail, and a right auxiliary bed or right auxiliary ladder is provided on the front right end of the vertical guide rail. Each PMT on the PET probe is connected to an electrical control device, the bracket moves back and forth under the control of a PLC controller, and the auxiliary platform is a stepped platform or a multi-step auxiliary ladder. The CT is, for example, a single detection ring or multiple detection rings.

[0032] The detection system further includes a group of positioning devices having multiple positioning devices, the positioning devices being infrared detection devices or cameras, and at least one positioning device is installed at each of the following locations: the front end of the probe, the intersection of the two guide rails, the left end of the longitudinal guide rail, and the right end of the longitudinal guide rail.

[0033] Furthermore, the entire front and rear detection beds are non-metallic, or the portion projected vertically during probe movement is non-metallic, or the portion extending 3 / 4 of the way from the rear end is non-metallic, and the non-metallic material is one of the following materials: reinforced laminated glass, epoxy resin rigid sheet, FRP fiberglass sheet, or eco-resin sheet. The above materials ensure strength and avoid adverse effects on detection.

[0034] The bracket has an even number of legs, for example, four legs.

[0035] An auxiliary platform is a stepped platform or a multi-step auxiliary ladder, and a stepped platform is a stepped, hollow or solid platform with multiple inclined surfaces. An auxiliary ladder is, for example, a ladder formed of an inclined frame and a vertical frame, with each step ladder board placed on the inclined frame. An auxiliary ladder is made of, for example, steel or aluminum, and a stepped platform is made of, for example, engineering plastic or aluminum, or a composite of aluminum and engineering plastic, and is solid or hollow.

[0036] A PET probe, for example, consists of a probe block, photoconductive layer, PMT, receiving circuit, controller, and computer for each detection module. The housing is used to secure the probe, and its appearance matches the probe, being slightly larger. The probe is fixed within the housing, and to facilitate detection, the cross-sectional area of ​​the probe cavity is the same; in other words, the shape of the detection module formed by each circle in the cross-section is basically the same. The probe can meet the implementation requirements if it is a hollow column type, and longer whole-body probes or shorter probes that can detect only a part of the body, such as common chest PET, head PET, and abdominal PET (approximately 20-40 cm in length), can also be used. In practice, the four PET probes mentioned above are the most common. Alternatively, whole-body CT (radially long) or head CT (radially short) probes may be used.

[0037] For the housing, the housing of the electrical control unit, the detection bed group, and the bracket, components requiring high strength are made of steel, components requiring general strength are made of aluminum, and other components can be filled with light-colored polyester padding.

[0038] Furthermore, the positioning device group includes multiple positioning devices, which are infrared detection devices or cameras. Positioning devices are provided at the front end of the probe, the intersection of the two guide rails, the left end of the vertical guide rail, and the right end of the vertical guide rail, respectively. The most typical installation method is to illuminate downwards from directly above or downwards from diagonally above. The main function is to prevent mismatches by confirming whether the object is in the detection position before detection. Rapid changes in the infrared alignment signal correspond to the moment when the edge of the infrared reflected signal has just left the object to be detected, or when the object / detection bed / edge of the detection bed has just been detected, facilitating the identification of the object's position. The infrared probe may, for example, have separate transmitters and receivers, or it may be a module integrating the transmitter and receiver. The camera is installed in a fixed position to capture images downwards / diagonally, and by comparing the captured images with images acquired at a predetermined position, it is possible to quickly determine whether the detection bed has been moved to a predetermined position.

[0039] In the case of a guide rail, for example, the bottom of the first and second fixed frames are provided with four vertical electrically controlled wheels that can rotate / move laterally along the guide rail. Alternatively, these may be vertical wheels or horizontal / swivel wheels, which are inserted into the gaps of the embedded guide rail and cause movement by rubbing against each other on both sides.

[0040] For example, below the first and second fixed frames are four electrically controlled freewheels that can move along lateral and longitudinal guide rails. The wheels and guide rails are coated with polyurethane to generate damping force to prevent slippage. The cross-sections of the lateral and longitudinal guide rails are high at the edges and low in the middle, and the tracks at the intersections are "cross" or "T" shaped to facilitate switching between vertical and lateral movement. Example 2

[0041] The composite mobile switching type human body detection method performed by the aforementioned composite mobile switching type human body detection system is as follows: (1) Preparation step: Position the first detection bed and the second detection bed at the left and right ends of the vertical guide rail, respectively, energize the probe and have it on standby, have one person to be detected lie down on the first detection bed, control the first detection bed to move to the intersection of the guide rail and then move backward, place the first detection bed into the probe cavity, the probe being a PET probe or a CT probe; (2) Detection step: Detect the person to be detected, and before the scan is completed, have another person to be detected lie down on the second detection bed, and after detection is completed, move the first detection bed forward to the intersection of the guide rail and then move to the left end of the vertical guide rail. (3) Repeated detection step: Repeat step (2) until all patients requiring detection have been detected.

[0042] Furthermore, the surface of the pre-detection bed and the surface of the post-detection bed are provided with at least one positioning block for positioning a person to be detected, and further includes a group of positioning devices including a plurality of positioning devices, the positioning devices being infrared detection devices or cameras, and before detecting a person to be detected in step (2), at least one of the positioning devices determines, based on a signal received, that the current first detection bed or second detection bed is in a predetermined detection position.

[0043] The surfaces of the front and rear detection beds are provided with at least one positioning block for positioning the person to be detected. This positioning block may be a bump, a concave block, or a color block of the same height but different colors, and the bumps and concave blocks may be the same or different colors. The upper front and rear ends of the detection bed are provided with at least one color block for positioning the person to be detected, and unlike the conveyor belt body, the color block may be a bump, or another concave mark, or other mark on the side. In short, there are, for example, four color blocks used to mark the detected position of the person to be detected, and in the case of a corresponding part of the person to be detected, such as a head, the person to be detected can be easily positioned and detected as long as the head is positioned between the four color blocks.

[0044] Regarding the method of driving and moving the detection bed, the rotation time at a specific power level is predetermined to ensure that it moves to a predetermined position. For example, the drive wheel may be rotated for 10s, 12s, 14s, 16s, 18s, and 20s, and after pre-testing, the object to be detected at the front end may be moved to the detection position. Alternatively, the stopping of the detection bed device is determined by signals sent back by the positioning device (e.g., information sent back to the front end of the probe, the intersection of the two guide rails, the left end of the longitudinal guide rail, and the right end of the longitudinal guide rail), or both methods are used simultaneously. Movement can be controlled manually or automatically, and it can also be stopped manually if a problem occurs.

[0045] The system further includes a group of positioning devices, each of which is an infrared detection device or a camera, and before detecting a person in step (2), at least one of the positioning devices determines, based on the signal received, that the current first detection bed is in a predetermined detection position. With each movement, to ensure safety, the positioning of the positioning device can be used to determine whether the position is correct, for example, based on an infrared signal or a reinforced signal, or it may be a real-time camera, and a real-time monitoring screen can be used to determine whether it is correct, whether to move to the predetermined position, etc. This determination relates to the current position of the detection bed, whether a person is lying down, whether the front and rear detection beds are aligned with the cavity of the probe, etc. Other limitations on alignment may be the same as in Embodiment 1. Example 3

[0046] The combined mobile switching human body detection system includes a probe device, a group of detection beds, and a guide rail network. The probe device includes a probe, a housing, an electrical control device, and a bracket. The probe is hollow and columnar in shape with a circular or regular polygonal cross-section. The outer surface of the probe has a supporting housing. The bracket connects to and supports the housing, maintaining the probe's central axis horizontally. Below the bracket are at least four electrical control wheels. The probe is either a PET probe or a CT probe.

[0047] The detection bed group includes a first detection bed and a second detection bed arranged on the left and right sides. The first detection bed includes a first bed plate and a first fixing frame, and the second detection bed includes a second bed plate and a second fixing frame. The first fixing frame horizontally fixes the first bed plate from the front, and the second detection bed horizontally fixes the second bed plate from the front.

[0048] The guide rail group includes at least four lateral guide rails and at least two longitudinal guide rails, and the bracket moves laterally and longitudinally along the guide rail network under the load of the electrically controlled wheels, with each lateral guide rail intersecting each longitudinal guide rail.

[0049] Furthermore, a left auxiliary bed or left auxiliary ladder is provided next to the first detection bed, and a right auxiliary bed or right auxiliary ladder is provided next to the second detection bed, each PMT on the probe is connected to an electrical control device, the bracket moves back and forth under the control of a PLC controller, the auxiliary platform is a staircase-like platform or a multi-step auxiliary ladder, the detection system further includes a group of positioning devices including a plurality of positioning devices, the positioning devices being infrared detection devices or cameras, and at least one positioning device is installed at the front end of the first detection bed, the rear end of the first detection bed, the front end of the second detection bed, and the rear end of the second detection bed. The CT is, for example, a single probe ring or a plurality of probe rings.

[0050] The entire front and rear detection beds are non-metallic, or the portion projected vertically during probe movement is non-metallic, or the portion extending 3 / 4 of the way from the rear end is non-metallic. The non-metallic material is one of the following: reinforced laminated glass, epoxy resin rigid sheet, FRP fiberglass sheet, or eco-resin sheet. The above materials can guarantee strength and avoid adverse effects on the inspection.

[0051] The bracket has an even number of legs, for example, four legs.

[0052] An auxiliary platform is a stepped platform or a multi-step auxiliary ladder, and a stepped platform is a stepped, hollow or solid platform with multiple inclined surfaces. An auxiliary ladder is, for example, a ladder formed of an inclined frame and a vertical frame, with each step ladder board placed on the inclined frame. An auxiliary ladder is made of, for example, steel or aluminum, and a stepped platform is made of, for example, engineering plastic or aluminum, or a composite of aluminum and engineering plastic, and is solid or hollow.

[0053] A PET probe consists of, for example, a probe block, photoconductive layer, PMT, receiving circuit, controller, and computer for each detection module. The housing is used to secure the probe, and its appearance matches the probe, being slightly larger. The PET probe is fixed within the housing, and to facilitate detection, the cross-sectional area of ​​the cavity of the PET probe is the same; in other words, the shape of the detection module formed by each circle in the cross-section is basically the same. Any hollow column-type PET probe can meet the implementation requirements, and longer whole-body probes or shorter probes that can detect only a part of the body, such as common chest PET, head PET, and abdominal PET (approximately 20-40 cm in length), can be used. In practice, the four types of PET probes mentioned above are the most common. Alternatively, whole-body CT (radially long) or head CT (radially short) probes may be used.

[0054] For the housing, the housing of the electrical control unit, the detection bed group, and the bracket, components requiring high strength are made of steel, components requiring general strength are made of aluminum, and other components can be filled with light-colored polyester padding.

[0055] Furthermore, the positioning device group includes multiple positioning devices, each of which is an infrared detection device or a camera. Positioning devices are provided at the front end of the first detection bed, the rear end of the first detection bed, the front end of the second detection bed, and the rear end of the second detection bed, respectively. The most typical installation method is to illuminate downwards from directly above or downwards from diagonally above. The main function is to prevent mismatches by confirming whether the object is in the detection position before detection. Rapid changes in the infrared alignment signal correspond to the moment when the edge of the infrared reflected signal has just left the object to be detected, or when the object / detection bed / edge of the detection bed has just been detected, facilitating the identification of the object's position. The infrared probe may, for example, have separate transmitters and receivers, or it may be a module integrating the transmitter and receiver. The camera is installed in a fixed position to capture images downwards / diagonally, and by comparing the captured images with images acquired at a predetermined position, it is possible to quickly determine whether the detection bed has been moved to a predetermined position.

[0056] In the case of a guide rail, for example, the lower part of the bracket is provided with four vertical electrically controlled wheels that can rotate / move laterally along the guide rail. Alternatively, these may be vertical wheels or horizontal / swivel wheels, which are inserted into the gaps of the embedded guide rail and move by rubbing against each other on both sides.

[0057] For example, below the bracket are four electrically controlled swivel wheels that can move along the lateral and longitudinal guide rails. The wheels and guide rails are coated with polyurethane to generate damping force to prevent slippage. The cross-sections of the lateral and longitudinal guide rails are high at the edges and low in the middle, and the tracks at the intersections are "cross" or "T" shaped, facilitating switching between vertical and lateral movement. Example 4

[0058] The composite mobile switching type human body detection method performed by the aforementioned composite mobile switching type human body detection system is as follows: (1) Preparation step: Position the first detection bed and the second detection bed at the left and right ends of the vertical guide rail, respectively, energize the probe and have it on standby, have one person to be detected lie down on the first detection bed, control the probe device to move to the left end of the vertical guide rail and then move forward, place the first detection bed into the probe cavity, and the probe is a PET probe or a CT probe; (2) Detection step: Detect the person to be detected, and before the scan is completed, have another person to be detected lie down on the second detection bed, and after detection is completed, move the probe device backward on the vertical guide rail, then move to the right end of the vertical guide rail and then move forward. (3) Repeat detection step: Repeat step (2) until all patients requiring detection have been detected.

[0059] Furthermore, the surface of the pre-detection bed and the surface of the post-detection bed are provided with at least one positioning block for positioning a person to be detected, and further includes a group of positioning devices including a plurality of positioning devices, the positioning devices being infrared detection devices or cameras, and before detecting a person to be detected in step (2), at least one of the positioning devices determines, based on a signal received, that the current first detection bed or second detection bed is in a predetermined detection position.

[0060] The surfaces of the front and rear detection beds are provided with at least one positioning block for positioning the person to be detected. This positioning block may be a bump, a concave block, or a color block of the same height but different colors, and the bumps and concave blocks may be the same or different colors. The upper front and rear ends of the detection bed are provided with at least one color block for positioning the person to be detected, and unlike the conveyor belt body, the color block may be a bump, or another concave mark, or other mark on the side. In short, there are, for example, four color blocks used to mark the detected position of the person to be detected, and in the case of a corresponding part of the person to be detected, such as a head, the person to be detected can be easily positioned and detected as long as the head is positioned between the four color blocks.

[0061] Regarding the method of driving and moving the probe device, the rotation time at a specific power level is predetermined to ensure that it moves to a predetermined position. For example, the drive wheel is rotated for 10s, 12s, 14s, 16s, 18s, and 20s, and after preliminary testing, the object to be detected at the front end is positioned precisely at the detection location. Alternatively, stopping the probe device is determined by the signal sent back by the positioning device (e.g., information sent back to the front end of the first detection bed, the rear end of the first detection bed, the front end of the second detection bed, and the rear end of the second detection bed), or both methods are used simultaneously. Movement can be controlled manually or automatically, and it can also be stopped manually if a problem occurs.

[0062] The system further includes a group of positioning devices, each of which is an infrared detection device or a camera, and before detecting a person in step (2), at least one of the positioning devices determines that the current probe device is in a predetermined detection position based on the received signal. With each movement, to ensure safety, the positioning of the positioning device can be used to determine whether the position is correct, for example, based on an infrared signal or a reinforced signal, or it may be a real-time camera, and a real-time monitoring screen can be used to determine whether it is correct, whether to move to the predetermined position, etc. This determination relates to the current position of the probe device, whether a person is lying down, whether the front and rear detection beds are aligned with the cavity of the probe, etc. Other limitations on alignment may be the same as in Embodiment 3. Example 5

[0063] A computer-readable storage medium stores a computer program that performs the composite movement-switching human body detection method described above. This may be one of the methods of Embodiment 2 / 4. It also includes the computer program itself for performing the composite movement-switching human body detection method. And it includes one or more PLC controllers incorporated into this program, or a group of PLC controllers. Alternatively, it is an automated system that includes the software of the above computer program and has hardware settings capable of performing the above method.

[0064] The above describes only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto, and changes and substitutions that are not conceivable by creative work should also be included within the scope of protection of the present invention. Accordingly, the scope of protection of the present invention should be in accordance with the scope of protection defined in the claims.

[0065] Explanation of the symbols 1. Probe device, 2. Detection bed group, 3. Guide rail group, 11. Probe, 12. Housing, 13. Electrical control device, 14. Bracket, 21. First detection bed, 22. Second detection bed, 211. First bed plate, 212. First fixing frame, 221. Second bed plate, 222. Second fixing frame, 31. Vertical guide rail, 32. Horizontal guide rail.

Claims

1. A combined mobile switching type human body detection system, Includes probe device, detection bed group, guide rail group, The probe device includes a probe, housing, electrical control device, and bracket. The probe is hollow and columnar in shape with a circular or regular polygonal cross-section. The outer surface of the probe has a supporting housing. The bracket connects and supports the housing, maintaining the probe's central axis horizontally. The probe is either a PET probe or a CT probe. The detection bed group includes a first detection bed and a second detection bed. The first detection bed includes a first bed plate and a first fixing frame. The second detection bed includes a second bed plate and a second fixing frame. The first fixing frame is fixed from the front so that the first bed plate is horizontal. The second detection bed is fixed from the front so that the second bed plate is horizontal. A composite moving-switchable human body detection system characterized in that the guide rail group includes two parallel vertical guide rails and two parallel horizontal guide rails, and the first fixed frame and the second fixed frame move independently on the intersecting vertical and horizontal guide rails.

2. A left auxiliary bed or left auxiliary ladder is installed on the front left end of the vertical guide rail, and a right auxiliary bed or right auxiliary ladder is installed on the front right end of the vertical guide rail. Each PMT on the probe is connected to an electrical control device, the bracket moves back and forth under the control of a PLC controller, and the auxiliary platform is a stepped platform or a multi-step auxiliary ladder. The detection system further includes a group of positioning devices having multiple positioning devices, where the positioning devices are infrared detection devices or cameras. The composite moving switchable human body detection system according to claim 1, characterized in that at least one positioning device is installed at the front end of the probe, the intersection of the two guide rails, the left end of the vertical guide rail, and the right end of the vertical guide rail.

3. The entire front detection bed and rear detection bed are nonmetallic, or The portion projected vertically during probe movement is nonmetallic, or The portion extending three-quarters of the way from the rear end is nonmetallic. The composite moving switchable human body detection system according to claim 1, characterized in that the nonmetal is one of the materials of reinforced laminated glass, epoxy resin rigid sheet material, FRP glass fiber sheet, and eco resin sheet.

4. A composite movement switching type human body detection method implemented by the composite movement switching type human body detection system described in claims 1 to 3, (1) Preparation step: Position the first detection bed and the second detection bed at the left and right ends of the vertical guide rail, power to the probe and have it stand by, have one person to be detected lie down on the first detection bed, control the first detection bed to move to the intersection of the guide rail and then move backward, place the first detection bed into the probe cavity, and ensure that the probe is a PET probe or a CT probe. (2) Detection step: Before a person to be detected is detected and the scan is completed, another person to be detected lies down on the second detection bed. After detection is completed, the first detection bed is controlled to move forward to the intersection of the guide rails and then to the left end of the vertical guide rail. The second detection bed is then moved backward to the intersection of the guide rails, placing the second detection bed into the probe cavity. The person who has completed detection leaves the first detection bed. Before a person to be detected is detected and the scan is completed, another person to be detected lies down on the first detection bed. After detection is completed, the second detection bed is controlled to move forward to the intersection of the guide rails and then to the right end of the vertical guide rail. The first detection bed is then moved backward to the intersection of the guide rails, placing the first detection bed into the probe cavity. The person who has completed detection leaves the second detection bed. (3) Repeated detection step: A composite mobile switching human body detection method characterized by including repeating step (2) until all patients requiring detection are detected.

5. The surface of the pre-detection bed and the surface of the post-detection bed are provided with at least one positioning block for positioning the person to be detected. The composite moving-switching human body detection method according to claim 4, further comprising a group of positioning devices including a plurality of positioning devices, wherein the positioning devices are infrared detection devices or cameras, and before detecting a person to be detected in step (2), it is determined that the current first detection bed or second detection bed is in a predetermined detection position based on a signal received by at least one of the positioning devices.

6. A combined mobile switching type human body detection system, Includes probe device, detection bed group, guide rail network, The probe device includes a probe, a housing, an electrical control device, and a bracket. The probe is hollow and columnar in shape with a circular or regular polygonal cross-section. The outer surface of the probe has a supporting housing. The bracket connects and supports the housing, maintaining the probe's central axis horizontally. Below the bracket are at least four electrical control wheels. The probe is either a PET probe or a CT probe. The detection bed group includes a first detection bed and a second detection bed arranged on the left and right sides. The first detection bed includes a first bed plate and a first fixing frame. The second detection bed includes a second bed plate and a second fixing frame. The first fixing frame horizontally fixes the first bed plate from the front, and the second detection bed horizontally fixes the second bed plate from the front. A composite moving-switchable human body detection system characterized in that the guide rail group includes at least four lateral guide rails and at least two longitudinal guide rails, the bracket moves laterally and longitudinally on the guide rail network under the load of an electrically controlled wheel, and each lateral guide rail intersects with each longitudinal guide rail.

7. A left auxiliary bed or left auxiliary ladder is provided next to the first detection bed, and a right auxiliary bed or right auxiliary ladder is provided next to the second detection bed. Each PMT on the probe is connected to an electrical control device, the bracket moves back and forth under the control of a PLC controller, and the auxiliary platform is a stepped platform or a multi-step auxiliary ladder. The detection system further includes a group of positioning devices, each of which is an infrared detection device or a camera, and at least one positioning device is installed at the front end of the first detection bed, the rear end of the first detection bed, the front end of the second detection bed, and the rear end of the second detection bed. The composite moving switchable human body detection system according to claim 6, characterized in that the entirety of the front detection bed and the rear detection bed are nonmetallic, or the portion projected vertically during probe movement is nonmetallic, or the portion extending three-quarters of the way from the rear end is nonmetallic, and the nonmetallic material is one of reinforced laminated glass, epoxy resin rigid sheet material, FRP glass fiber sheet, or eco-resin sheet.

8. A composite movement switching type human body detection method implemented by the composite movement switching type human body detection system described in claims 6 to 7, (1) Preparation step: Position the first detection bed and the second detection bed corresponding to the left and right ends of the vertical guide rail, power the probe and put it into standby mode, have one person lie down on the first detection bed, control the probe device to move to the left end of the vertical guide rail and then move it forward, place the first detection bed into the probe cavity, and ensure that the probe is a PET probe or a CT probe. (2) Detection step: Before a person to be detected is detected and the scan is completed, another person to be detected lies down on the second detection bed. After detection is completed, the probe device is controlled to move backward on the vertical guide rail, then to the right end of the vertical guide rail, and then to move forward, placing the second detection bed into the probe cavity. The person who has completed detection leaves the first detection bed. Before a person to be detected is detected and the scan is completed, another person to be detected lies down on the first detection bed. After detection is completed, the probe device is controlled to move backward on the vertical guide rail, then to the left end of the vertical guide rail, and then to move forward, placing the first detection bed into the probe cavity. The person who has completed detection leaves the second detection bed. (3) Repeated detection step: characterized by repeating step (2) until all patients requiring detection are detected.

9. The surface of the pre-detection bed and the surface of the post-detection bed are positioning blocks for positioning at least one subject to be detected. The composite moving-switching human body detection method according to claim 8, further comprising a group of positioning devices including a plurality of positioning devices, wherein the positioning devices are infrared detection devices or cameras, and before detecting a person to be detected in step (2), it is determined that the current probe device is in a predetermined detection position based on a signal received by at least one of the positioning devices.

10. A computer-readable storage medium characterized by storing a computer program that performs the composite movement switching type human body detection method described in any one of claims 4 to 5 or 8 to 9.

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