Portable beam limiting device and control system thereof

Abstract

The invention provides a portable beam limiting device and a control system thereof. The beam limiting device comprises a beam limiting device body, a gear assembly and an angle encoder device. And an openable lead blade is arranged in the beam limiting device body. The gear assembly is arranged in the beam limiting device body and connected with the lead blades so as to adjust the opening and closing degree of the lead blades. The angle encoder device is arranged in the beam limiting device body and comprises an encoder gear, and the encoder gear is in meshed connection with the gear assembly so as to be driven by the gear assembly to rotate. The portable beam limiting device can feed back the position information of the lead leaf in real time, the X-ray irradiation range is accurately controlled, and the risk of excessive radiation of a patient is reduced.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a portable beam limiter and a control system thereof. Background Art

[0002] Portable mobile X-ray machines are compact and easy to carry. They can not only be used for medical treatment, X-ray photography of large animals such as horses and pets, but have also become the first choice for field applications, emergency scenarios and low-cost pet applications.

[0003] A beam limiter is a device used to limit the X-ray field in medical X-ray diagnostic equipment. A beam limiter is also called a "line blocker", "light shrinker" or "light beamer". It is installed in the window of the X-ray tube sleeve to block unnecessary primary X-rays during X-ray examinations. It can limit the X-ray irradiation field to the minimum required range to avoid excessive radiation for patients. The average annual radiation dose for an average person should not exceed 50mSv, or 50 millisieverts. If an excessive dose of radiation is received, it will easily cause cancer, and radiation beyond the safe dose will further promote the growth of cancer cells, which will have very serious consequences for the patient.

[0004] However, in actual operation, existing portable mobile X-ray machines face considerable challenges in adjusting the beam limiter. Due to limited adjustment accuracy, medical staff often find it difficult to make fine adjustments based on the patient's specific body position and diagnostic needs, which not only affects the accuracy of the diagnosis, but also invisibly increases the risk of patients suffering potential health hazards due to excessive radiation. Therefore, improving the adjustment accuracy of the beam limiter of portable mobile X-ray machines has become a technical problem that needs to be solved urgently. Through technological innovation and optimized design, a more accurate and flexible beam limiter adjustment function can be achieved, which will provide patients with safer and more efficient X-ray diagnostic services and further promote the advancement and development of medical technology. Summary of the invention

[0005] In view of the problems existing in the prior art described above, the present application provides a portable beam limiter and its control system, which can detect the distance between the patient and the beam limiter and provide real-time feedback on the position information of the lead blade, thereby accurately controlling the X-ray irradiation range and reducing the risk of excessive radiation for the patient.

[0006] To achieve the above-mentioned object and other related objects, the present invention provides a portable beam limiter, which includes:

[0007] The beam limiter body comprises a top and a bottom which are arranged opposite to each other, and a lead blade which can be opened and closed is arranged in the beam limiter body;

[0008] The gear assembly is arranged inside the beam limiter body and connected with the lead blade to adjust the opening and closing size of the lead blade;

[0009] The angle encoder device is arranged in the beam limiter body. The angle encoder comprises an encoder gear, which is meshed and connected with the gear assembly so as to rotate under the drive of the gear assembly.

[0010] Optionally, the beam limiter further comprises a lead blade opening and closing knob, which is arranged on the outer surface of the beam limiter body, and the gear assembly comprises:

[0011] The sector gear meshes with the encoder gear and is connected with the lead blade to drive the encoder gear to rotate and the lead blade to move;

[0012] The knob gear is meshed with the fan-shaped gear, and the knob gear is connected to the lead leaf opening and closing knob so as to rotate under the drive of the lead leaf opening and closing knob.

[0013] Optionally, the lead leaf opening and closing knob includes a connecting rod and a knob cover, and the connecting rod is connected to the knob gear.

[0014] Optionally, the lead leaf opening and closing knob includes a longitudinal lead leaf opening and closing knob and a transverse lead leaf opening and closing knob.

[0015] Optionally, the angle encoder is arranged in one-to-one correspondence with the longitudinal lead blade opening and closing knob and the transverse lead blade opening and closing knob, and the gear assembly is arranged in one-to-one correspondence with the longitudinal lead blade opening and closing knob and the transverse lead blade opening and closing knob.

[0016] Optionally, the beam limiter further comprises:

[0017] The TOF module device is arranged inside the beam limiter body, and is used to measure the distance from the target object to the beam limiter body, and transmit the distance information to the host computer.

[0018] Optionally, the beam limiter body further includes:

[0019] The handle is arranged on the bottom of the restraint body.

[0020] Another aspect of the present invention provides a portable beam limiter control system, which comprises:

[0021] A beam limiter, the beam limiter comprising the beam limiter described above;

[0022] The upper computer and the angle encoder module of the beam limiter are connected to the upper computer for communicating so as to transmit the rotation angle information of the encoder gear of the angle encoder to the upper computer. The upper computer obtains the opening and closing information of the lead blade according to the rotation angle information and feeds back the opening and closing information of the lead blade to the control end.

[0023] Optionally, the host computer includes:

[0024] The processing module obtains the opening and closing information of the lead blade according to the rotation angle information;

[0025] The feedback module feeds back the opening and closing information of the lead blade to the control end, and the control end accurately adjusts the opening and closing position based on the information.

[0026] Optionally, the control system further includes:

[0027] An adapter component is located at the top of the beam limiter body of the beam limiter, the adapter component includes a top plate, the top plate is spaced apart from the top of the beam limiter body, and the beam limiter body is rotatable relative to the adapter component;

[0028] The communication component includes a top plate PCB, a flange PCB and a flexible spring sheet, wherein the top plate PCB is fixed to the top of the beam limiter body and is arranged opposite to the top plate of the adapter component, the flange PCB is arranged on the top plate of the adapter component to be arranged opposite to the top plate PCB, one end of the flexible spring sheet is fixed to the flange PCB, and the other end is in contact and connected with the top plate PCB.

[0029] As described above, the portable beam limiter and control system provided by the present invention have at least the following beneficial technical effects:

[0030] The portable beam limiter of the present invention comprises a beam limiter body, a gear assembly and an angle encoder device. An openable and closable lead blade is arranged in the beam limiter body. The gear assembly is arranged inside the beam limiter body and is connected to the lead blade to adjust the opening and closing size of the lead blade. The angle encoder device is arranged in the beam limiter body, and the angle encoder comprises an encoder gear, which is meshed and connected with the gear assembly to rotate under the drive of the gear assembly. The portable beam limiter of the present invention can feedback the lead blade position information in real time, realize accurate control of the X-ray irradiation range, and reduce the risk of excessive radiation of patients.

[0031] The portable beam limiter control system of the present invention comprises a beam limiter and a host computer, wherein the beam limiter comprises the beam limiter described above. The angle encoder module of the beam limiter is connected to the host computer in communication to transmit the rotation angle information of the encoder gear of the angle encoder to the host computer, and the host computer obtains the lead leaf opening and closing information according to the rotation angle information and feeds back the lead leaf opening and closing information to the control end. It is also possible to feed back the lead leaf position information in real time to realize accurate control of the X-ray irradiation range and reduce the risk of excessive radiation of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Shown is a schematic structural diagram of a portable beam limiter provided by an embodiment of the present invention.

[0033] Figure 2 Shown is a schematic structural diagram of a portable beam limiter including an angle encoder provided by an embodiment of the present invention.

[0034] Figure 3 A detailed position diagram of an angle encoder provided by an embodiment of the present invention is shown.

[0035] Figure 4 A schematic diagram showing the positions of the sector gear and lead blades provided in an embodiment of the present invention.

[0036] Figure 5 Schematic diagram of the functional modules of the portable beam limiter control system in an embodiment of the present invention.

[0037] Figure 6 A schematic diagram of the connection relationship between the adapter component and the top of the beam limiter body provided in an embodiment of the present invention.

[0038] Figure 7 A schematic diagram of the structure of a communication component provided in an embodiment of the present invention.

[0039] Figure 8 A schematic diagram of an exploded view of the structure of a communication component provided in an embodiment of the present invention.

[0040] Fig. 9 A schematic diagram showing the positional relationship between the adapter component and the communication component provided in an embodiment of the present invention.

[0041] Fig.10 Shown is a schematic structural diagram of a portable beam limiter including a switching component and a communication component provided by an embodiment of the present invention.

[0042] Fig.11 A schematic diagram of the position of the limiting block of the portable beam limiter provided in an embodiment of the present invention.

[0043] Fig.12 A schematic diagram of the positions of the limiting components of the portable beam limiter provided in an embodiment of the present invention.

[0044] Fig.13 A schematic diagram of the position of a stop component on a transition component provided in an embodiment of the present invention.

[0045] Fig.14 A schematic diagram of the connection relationship between the beam limiter, the adapter component, the communication component and the host computer provided in an embodiment of the present invention.

[0046] Reference numerals

[0047] 01. Beam limiter; 011. Top; 012. Bottom; 1. Beam limiter body; 10. Handle; 11. TOF module device; 12. Angle encoder device; 121. Encoder gear; 13. Lead blade opening and closing knob; 131. Longitudinal lead blade opening and closing knob; 1311. Connecting rod; 1312. Knob cover; 132. Horizontal lead blade opening and closing knob; 14. Gear assembly; 141. Fan gear; 142. Knob gear; 15. Lead blade; 2. Adapter component; 21. Top plate; 22. Side wall; 221. Flange; 2211. Limiting groove; 23. Stop component; 3. Communication component; 31. Top plate PCB; 311. Sliding groove; 32. Flange PCB; 33. Flexible spring clip; 34. Spring clip mounting bracket; 4. Flange mounting seat; 41. Limiting component; 5. Limiting block; 02. Host computer. DETAILED DESCRIPTION

[0048] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0049] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Although the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation, the form, quantity, positional relationship and proportion of each component in actual implementation can be changed at will under the premise of realizing the technical solution of this party, and the component layout form may also be more complicated.

[0050] Beam limiters are widely used in medical imaging, radiotherapy, industrial testing and other fields. Their core function is to accurately control and adjust the shape, size and direction of the radiation beam to ensure that the radiation energy can accurately act on the target area while minimizing damage to surrounding tissues. The main function of a beam limiter is to limit the X-ray irradiation range to the minimum required area to prevent the patient from receiving excessive radiation. This is because excessive radiation increases the risk of cancer in patients, and radiation beyond the safe dose will further promote the growth of cancer cells, bringing serious consequences to patients.

[0051] However, in the use of existing portable mobile X-ray machines, the adjustment of the beam limiter is often not precise enough, and it cannot be fine-tuned according to the specific position and needs of the patient. The irradiation range of the X-ray may be too large, causing the patient to receive more radiation than actually needed. This increases the risk of excessive radiation exposure to patients and requires further improvement and optimization.

[0052] In order to solve the above problems, the present invention provides a portable beam limiter and a control system thereof, wherein an angle encoder device and a gear assembly are arranged in the portable beam limiter. An angle encoder is a sensor that converts a rotation angle into an electrical signal. It is widely used in various occasions where accurate angle measurement is required to accurately control the irradiation range of the radiation beam, ensuring that the radiation only irradiates the tumor or other target area while protecting the surrounding healthy tissue. Its working principle is mainly based on the photoelectric effect or the magnetoelectric effect. The angle encoder usually consists of two parts: a rotating axis measurement unit and a signal transmission unit. Through the coordinated action of the gear assembly and the angle encoder device, the X-ray irradiation range can be accurately controlled to reduce the risk of excessive radiation for patients. It is now described in detail in conjunction with the following embodiments and accompanying drawings.

[0053] Embodiment 1

[0054] This embodiment provides a portable beam limiter, such as Figure 1 and Figure 3 As shown, the beam limiter 01 includes a beam limiter body 1 , a gear assembly 14 and an angle encoder device 12 .

[0055] Specifically, Figure 2 As shown, a lead blade 15 that can be opened and closed is provided in the beam limiter body 1 to adjust the shape and size of the radiation beam, ensure that the radiation is only irradiated to the target area, and reduce unnecessary radiation exposure. Figure 1 As shown, the beam limiter body 1 includes a top 011 and a bottom 012 that are arranged opposite to each other, and at least one handle 10 is fixed to the bottom 012, for example Figure 1 As shown, for easy operation, a pair of handles 10 are provided on both sides of the bottom 012 of the beam limiter body 1. The design of the handles 10 facilitates the user to carry, move or adjust the position of the beam limiter 01, thereby improving the convenience of operation.

[0056] Reference Figure 1 and Figure 2The beam limiter 01 of the present invention also includes a lead blade opening and closing knob 13, which is arranged on the outer surface of the beam limiter body 1. This design is not only convenient for the operator's intuitive observation and quick operation, but also ensures the stability and durability of the knob. The operator only needs to simply rotate the lead blade opening and closing knob 13 to achieve precise control of the opening and closing state of the lead blade 15. The operator controls the opening and closing of the lead blade 15 by rotating the lead blade opening and closing knob 13. The lead blade opening and closing knob 13 includes a longitudinal lead blade opening and closing knob 131 and a transverse lead blade opening and closing knob 132. The longitudinal lead blade opening and closing knob 131 and the transverse lead blade opening and closing knob 132 respectively control the opening and closing of the lead blade 15 in two different directions (longitudinal and transverse). This design allows the operator to easily adjust the shape and size of the radiation beam by operating the longitudinal lead blade opening and closing knob 131 and the transverse lead blade opening and closing knob 132 to match the size of the target area. To facilitate understanding of the structures of the longitudinal lead blade opening and closing knob 131 and the transverse lead blade opening and closing knob 132 , the longitudinal lead blade opening and closing knob 131 is taken as an example for detailed description.

[0057] like Figure 2 and Figure 3 As shown, the longitudinal lead blade opening and closing knob 131 includes a connecting rod 1311 and a knob cover 1312. The connecting rod 1311 is connected to the knob cover 1312, one end of the connecting rod 1311 is arranged on the inner surface of the limiter body 1, and the other end extends outward from the surface of the limiter body 1 and is connected to the knob cover 1312. The operator rotates the knob cover 1312 to rotate the longitudinal lead blade opening and closing knob 131.

[0058] Reference Figure 2 The angle encoder device 12 is arranged in the beam limiter body 1, and the angle encoder device 12 is used to detect the opening and closing information of the lead leaf 15 and transmit the opening and closing information of the lead leaf 15 to the upper computer. The angle encoder device 12 uses the beam limiter 01 (refer to Figure 1 ) can be used in different locations without external power connection, thereby improving the flexibility and applicability of the system. The angle encoder device 12 is set in a one-to-one correspondence with the longitudinal lead leaf opening and closing knob 131 and the transverse lead leaf opening and closing knob 132. Specifically, in this embodiment, refer to Figure 2 There are two angle encoder devices 12, one of which is adjacent to the longitudinal lead blade opening and closing knob 131, and is used to detect and transmit the longitudinal opening and closing information of the lead blade, and the other angle encoder device 12 is adjacent to the transverse lead blade opening and closing knob 132, and is used to detect and transmit the transverse opening and closing information of the lead blade. Figure 3 , the angle encoder 12 includes an encoder gear 121 .

[0059] like Figure 2 and Figure 3As shown, the gear assembly 14 is disposed inside the beam limiter body 1 and is connected to the lead blade 15 to adjust the opening and closing size of the lead blade 15. The gear assembly 14 is meshed and connected with the encoder gear 121, and the gear assembly 14 is disposed one-to-one with the longitudinal lead blade opening and closing knob 131 and the transverse lead blade opening and closing knob 132. That is, the longitudinal lead blade opening and closing knob 131 and the transverse lead blade opening and closing knob 132 both correspond to specific gear assemblies 14. The gear assembly 14 includes a sector gear 141 and a knob gear 142. As shown in FIG. Figure 4 As shown, the sector gear 141 is connected to the lead blade 15 to drive the encoder gear 121 to rotate and the lead blade 15 to move. Figure 3 As shown, the knob gear 142 is connected to the connecting rod 1311 of the lead leaf opening and closing knob 13. When the operator rotates the lead leaf opening and closing knob 13, the connecting rod 1311 of the lead leaf opening and closing knob 13 drives the knob gear to rotate.

[0060] like Figure 1 As shown, the beam limiter 01 also includes a TOF module device 11, which is arranged inside the beam limiter body 1, with a small size and high integration. The ranging principle of the TOF module device 11 is to continuously send light pulses to the target, and then use a sensor to receive the light returned from the object, and obtain the distance of the target object by detecting the round-trip time of the light pulse. The TOF module device 11 is used to measure the distance from the target object to the beam limiter body 1 and transmit the distance information to the host computer for further processing and analysis. The TOF module device 11 can realize full-range intelligent ranging (0.3m~2.5m). The TOF module device 11 uses the power supply inside the beam limiter 01 and can be used in different locations without the need for an external power supply connection, thereby improving the flexibility and applicability of the system.

[0061] Reference Figure 2 , Figure 3 and Figure 4 , the working process and principle of the angle encoder device 12 are briefly described below. The knob gear 142 is connected to the fan gear 141 through a precise meshing design. When the lead blade opening and closing knob 13 rotates a certain angle, the knob gear 142 drives the fan gear 141 to rotate, and the fan gear 141 further drives the encoder gear 121 to rotate a certain angle. The angle encoder device 12 converts the angle information into an electrical signal and transmits the electrical signal to the host computer. The host computer is built with a special algorithm and program, which can process the electrical signal. The host computer can obtain the accurate position of the lead blade 15 through algorithm calculation and feed back the accurate position of the lead blade 15 to the control end. The control end fine-tunes or confirms the opening and closing state of the lead blade 15 according to the accurate position information of the lead blade 15 fed back by the host computer, so as to achieve accurate control of the X-ray irradiation range and reduce the risk of excessive radiation for patients.

[0062] Reference Figures 1 to 4 In this embodiment, by setting an angle encoder device 12 and a gear assembly 14 on the beam limiter 01, the position information of the lead blade 15 can be fed back in real time, so that the operator can accurately control the X-ray irradiation range and reduce the risk of excessive radiation of the patient. At the same time, a TOF module device 11 is set inside the beam limiter 01 to measure the distance from the target object to the beam limiter body 1 and transmit the distance information to the host computer for further processing and analysis. The distance information of the detected object can be displayed and collected in real time, realizing full-range intelligent ranging (0.3m~2.5m).

[0063] Embodiment 2

[0064] This embodiment provides a portable beam limiter control system, such as Figure 5 and Fig.14 As shown, the portable beam limiter control system includes a beam limiter 01 and a host computer 02. The beam limiter includes the beam limiter 01 described in Example 1, and can also achieve the technical effects in Example 1. The angle encoder module of the beam limiter 01 is communicatively connected with the host computer to transmit the rotation angle information of the encoder gear of the angle encoder to the host computer 02, and the host computer obtains the lead leaf opening and closing information according to the rotation angle information and feeds back the lead leaf opening and closing information to the control end. The host computer 02 includes a processing module and a feedback module. The processing module obtains the lead leaf opening and closing information according to the rotation angle information. The feedback module feeds back the lead leaf opening and closing information to the control end, and the control end accurately adjusts the opening and closing position according to the information.

[0065] The portable beam limiter control system realizes the precise monitoring of the opening and closing state of the lead blades in the beam limiter 01. The interior of the beam limiter 01 usually contains movable lead blades, and the opening and closing state of these lead blades determines the shape and size of the radiation beam. The control system can accurately monitor the opening and closing state of these lead blades and feed back to the host computer 02 to ensure the precise control of the radiation beam. The host computer 02, as the brain of the system, is responsible for processing this information and feeding back to the control end, so that the control end can accurately adjust the working state of the beam limiter 01 to meet different treatment needs. Through this precise control and monitoring, the system can ensure the accuracy of the radiation beam during radiotherapy, reduce unnecessary radiation exposure, and thus improve the safety and effectiveness of treatment. This is crucial to protect patients and medical staff from radiation damage.

[0066] Embodiment 3

[0067] This embodiment also provides a portable beam limiter control system, the beam limiter includes the beam limiter described in the first embodiment, and can also achieve the technical effects of the first embodiment. Figures 5 to 14As shown, the portable beam limiter control system of this embodiment also includes a beam limiter 01 and a host computer 02. The angle encoder module of the beam limiter is connected to the host computer in communication to transmit the rotation angle information of the encoder gear of the angle encoder to the host computer. The host computer obtains the lead leaf opening and closing information according to the rotation angle information and feeds back the lead leaf opening and closing information to the control end. The host computer includes a processing module and a feedback module. The processing module obtains the lead leaf opening and closing information according to the rotation angle information. The feedback module feeds back the lead leaf opening and closing information to the control end, and the control end accurately adjusts the opening and closing position according to the information.

[0068] Reference Fig.10 and Fig.14 , when the existing portable mobile limiter is in use, the wire harness in the limiter 01 may get stuck with other structural parts of the upper computer 02 and be pulled during the repeated rotation of the rotating parts of the upper computer 02, resulting in poor contact of the interface and even wire breakage, affecting the normal operation of the limiter 01. Therefore, the present application sets the adapter component 2 and the communication component 3 at the top 011 of the limiter 01, without the need to use the traditional external system line. To cooperate with the adapter component 2, refer to Fig.11 The beam limiter 01 further includes a limit block 5 , which is located at the top 011 of the beam limiter body 1 so as to be arranged opposite to the top plate 21 .

[0069] like Fig.10 As shown, the adapter component 2 is located at the top 011 of the beam limiter body 1, and the adapter component 2 includes a top plate 21, and the top plate 21 is spaced apart from the top 011 of the beam limiter body 1. Fig.12 and Fig.13 , the adapter 2 further includes a stopper 23. The stopper 23 is located on the top plate 21 of the adapter 2 and protrudes toward the side opposite to the top 011 of the limiter body 1 and along the direction of the top 011. The distance from the end of the stopper 23 opposite to the limit block 5 to the top 011 plate 21 is not less than the minimum distance from the end of the limit block 5 opposite to the stopper 23 to the top 011 plate 21. The stopper 23 is rotatable relative to the limit block 5. In an optional embodiment of this embodiment, refer to Figures 11 to 13 Two stop blocks 5 are provided on the side opposite to the top plate 21 of the top 011 of the beam limiter body 1, and a stop member 23 is provided on the side opposite to the top plate 21 and the top 011 of the beam limiter body 1. The geometric centers of the two stop blocks 5 are located on the circumference of the same circle, and the obtuse angle θ formed by the two radii of the circle passing through the geometric centers of the two stop blocks 5 is 300 degrees. When the beam limiter 01 is rotated, due to the presence of the stop blocks 5 and the stop member 23, the beam limiter 01 of the present invention can be rotated within a range of 300°.

[0070] refer to Figure 6 , Fig. 9 and Fig.14 , the adapter component 2 also includes a side wall 22, and the end of the side wall 22 away from the top plate 21 forms a radially outward flange 221. A flange mounting seat 4 is fixedly provided on the top 011 of the beam limiter body, and the outer edge of the flange 221 is rotatably connected to the flange mounting seat 4. The top plate 21 of the adapter component 2 is formed into a circular ring structure, and the flange 221 is also formed into a circular ring structure, and the outer diameter of the flange 221 is larger than the outer diameter of the top plate 21. The flange 221 includes a plurality of limiting grooves 2211 evenly distributed along the outer edge. The adapter component 2 can drive the beam limiter 01 or the host computer 02 to rotate to different angles to achieve X-ray shooting at different angles. For example, in an optional embodiment of the present embodiment, the number of limiting grooves 2211 is 8, and the outer edge of the flange 221 is used as the circumference, and straight lines are drawn from any point on the center line of two adjacent limiting grooves 2211 to the center of the circle, and the acute angle formed by the two straight lines is 45 degrees. Refer to Fig.12 , a limiting component 41 is provided on the flange mounting seat 4. When the beam limiter 01 is rotated to a certain angle, the limiting component 41 can be inserted into the limiting groove 2211, which is convenient for shooting X-rays at different angles, so that the irradiation direction of the X-rays can be adjusted according to shooting requirements. This flexibility enables the operator to more easily capture various angles of the object being photographed, thereby obtaining more comprehensive and accurate image information.

[0071] like Figure 7 and Figure 8 As shown, the communication component 3 includes a top board PCB 31 , a flange PCB 32 and a flexible spring sheet 33 .

[0072] Reference Figures 6 to 10 and Fig.14, the top plate PCB 31 is fixed to the top 011 of the limiter body 1 and is arranged opposite to the top plate 21 of the adapter component 2, the flange PCB 32 is arranged on the side of the top plate 31 of the adapter component 2 opposite to the top 011 and is arranged opposite to the top plate PCB 31, one end of the flexible spring 33 is fixed to the flange PCB 32, and the other end is in contact with the top plate PCB 31. The flexible spring 33 includes a plurality of pins. The distance between the top plate PCB 31 and the flange PCB 32 is between 3mm and 8mm, and further, the distance between the top plate PCB 31 and the flange PCB 32 is between 4mm and 6mm. Specifically, in this embodiment, the distance between the top plate PCB 31 and the flange PCB 32 is 5mm. Copper plating generally refers to the laying of copper material on a circuit board or other electronic equipment. Copper is widely used because of its good electrical and thermal conductivity. The top plate PCB 31 is provided with a plurality of sliding grooves 311, and the sliding grooves 311 are copper plating sliding grooves. The pins of the flexible spring sheet 33 are contacted and arranged in a one-to-one correspondence with the sliding groove 311. Each sliding groove 311 leads out a wire, which is led out from the lower surface of the top plate PCB 31 and connected to the internal circuit of the limiter 01. That is, each pin contact of the flexible spring sheet 33 corresponds to a sliding groove 311. At this time, the pin contact of the flexible spring sheet 33 and the sliding groove 311 of the top plate PCB 31 are in a contact closed state. During the rotation of the limiter 01, the pin contact of the flexible spring sheet 33 is always in contact with the sliding groove 311 of the top plate PCB 31, thereby ensuring that the circuit is always in a closed state, providing a reliable guarantee for the stable transmission of electrical signals. This contact closed state is the key to ensuring that electrical signals can be transmitted normally.

[0073] Each pin spring of the flexible spring 33 is laid with a copper wire, which is led out through welding wires, led out from the upper surface of the top plate PCB 31, and passed through the flange PCB 32 to enter the system of the host computer 02, so as to facilitate power-on and signal transmission between the host computer 02. And there is no external system line. This design not only realizes the efficient transmission of electrical signals and power supply, but also greatly simplifies the connection structure of the system, avoiding the cumbersomeness and inconvenience of the external system line. This design without external system line not only makes the structure of the limiter 01 more compact and beautiful, but also improves the overall stability and reliability of the system. At the same time, the flexible spring 33 is connected to the system of the host computer 02 through copper wire. This design not only simplifies the path of signal transmission, but also improves the speed and efficiency of signal transmission. This efficient signal transmission method is of great significance for ensuring the real-time response and stable operation of the system.

[0074] Reference Figures 6 to 10 and Fig.14The communication component 3 further includes a spring mounting frame 34, which is fixed to the top plate 21 by adhesive and screws, and the flexible spring 33 is fixed to the spring mounting frame 34 by fixing screws. This design not only enhances the stability of the structure, but also ensures the positioning accuracy of the spring mounting frame 34 during the rotation process, providing a solid foundation for the installation and operation of the flexible spring 33.

[0075] Reference Figures 6 to 14 The system of the host computer 02 supplies power to the beam limiter 01 through the communication structure 3, and the internal signal of the beam limiter 01 is sent to the system of the host computer 02 through the communication structure 3. By arranging the adapter component 2 and the communication structure 3 on the beam limiter 01, the pin contact of the flexible spring sheet 33 and the sliding groove 311 are always in a contact and closed state during the rotation of the beam limiter 01, so that the power supply and signal communication of the beam limiter 01 and the host computer 02 are realized, without external system wires, the structure is compact, and it is easy to carry.

[0076] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A portable beam limiter, characterized in that: include: The beam limiter body comprises a top and a bottom which are arranged opposite to each other, and a lead blade which can be opened and closed is arranged in the beam limiter body; A gear assembly is disposed inside the beam limiter body and connected to the lead blade to adjust the opening and closing size of the lead blade; An angle encoder device is arranged in the beam limiter body. The angle encoder includes an encoder gear, which is meshed and connected with the gear assembly so as to rotate under the drive of the gear assembly.

2. The portable beam limiter according to claim 1, characterized in that: The beam limiter further comprises a lead blade opening and closing knob, wherein the lead blade opening and closing knob is arranged on the outer surface of the beam limiter body, and the gear assembly comprises: A sector gear meshed with the encoder gear and connected to the lead blade to drive the encoder gear to rotate and the lead blade to move; The knob gear is meshed with the fan-shaped gear, and the knob gear is connected to the lead blade opening and closing knob so as to rotate under the drive of the lead blade opening and closing knob.

3. The portable beam limiter according to claim 2, characterized in that: The lead leaf opening and closing knob comprises a connecting rod and a knob cover, and the connecting rod is connected to the knob gear.

4. The portable beam limiter according to claim 2, characterized in that: The lead leaf opening and closing knob includes a longitudinal lead leaf opening and closing knob and a transverse lead leaf opening and closing knob.

5. The portable beam limiter according to claim 4, characterized in that: The angle encoder is arranged in a one-to-one correspondence with the longitudinal lead blade opening and closing knob and the transverse lead blade opening and closing knob, and the gear assembly is arranged in a one-to-one correspondence with the longitudinal lead blade opening and closing knob and the transverse lead blade opening and closing knob.

6. The portable beam limiter according to claim 1, characterized in that: Also includes: The TOF module device is arranged inside the beam limiter body, and is used to measure the distance from the target object to the beam limiter body, and transmit the distance information to the host computer.

7. The portable beam limiter according to claim 1, characterized in that: The beam limiter body also includes: A handle is arranged on the bottom of the limiter body.

8. A portable beam limiter control system, characterized in that: include: A beam limiter, the beam limiter comprising the beam limiter according to any one of claims 1 to 7; The host computer, the angle encoder module of the beam limiter is communicatively connected with the host computer to transmit the rotation angle information of the encoder gear of the angle encoder to the host computer, and the host computer obtains the lead blade opening and closing information according to the rotation angle information and feeds back the above lead blade opening and closing information to the control end.

9. The portable beam limiter control system according to claim 8, characterized in that: The host computer comprises: A processing module is used to obtain the opening and closing information of the lead blade according to the rotation angle information; The feedback module feeds back the above lead leaf opening and closing information to the control end, and the control end accurately adjusts the opening and closing position according to the information.

10. The portable beam limiter control system according to any one of claims 8 to 9, characterized in that: The control system further comprises: An adapter component is located at the top of the beam limiter body of the beam limiter, the adapter component comprises a top plate, the top plate is spaced apart from the top of the beam limiter body, and the beam limiter body is rotatable relative to the adapter component; A communication component includes a top plate PCB, a flange PCB and a flexible spring sheet, wherein the top plate PCB is fixed to the top of the limiter body and is arranged opposite to the top plate of the adapter component, the flange PCB is arranged on the top plate of the adapter component to be arranged opposite to the top plate PCB, and one end of the flexible spring sheet is fixed to the flange PCB, and the other end is in contact and connected with the top plate PCB.

Images