A test tool for accelerator multi-leaf collimator driving board

Abstract

The utility model relates to a kind of test tool of accelerator multileaf collimator driving board, including multileaf collimator test board, control unit and adjustable power module, control unit connects multileaf collimator test board, multileaf collimator test board is also communicatively connected accelerator multileaf collimator driving board, adjustable power module is respectively powered for multileaf collimator test board and control unit;Multileaf collimator test board includes signal interface matching circuit, protection circuit, data acquisition module and communication module, signal interface matching circuit connects accelerator multileaf collimator driving board, data acquisition module is respectively connected signal interface matching circuit and communication module, communication module connects control unit, adjustable power module is connected data acquisition module through protection circuit.Compared with prior art, the utility model provides the hardware foundation for the test of accelerator multileaf collimator driving board, can cooperate the development of subsequent test procedure significantly improve the research and development and production efficiency of MLC driving board, and safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of testing auxiliary equipment for accelerator multi-leaf grating driver boards, and in particular to a testing fixture for accelerator multi-leaf grating driver boards. Background Technology

[0002] After the traditional multi-leaf grating driver board for accelerators is manufactured, the power supply can only be determined through simple testing. For example, the test circuit of a multi-leaf grating driver board for a linear accelerator disclosed in utility model publication number CN219434966U includes a multi-leaf grating driver board for a linear accelerator, a main control chip, an input interface module, a forward / reverse output module, a forward / reverse indicator light module, and a power supply module to power the entire circuit. The main control chip is connected to the input terminal of the multi-leaf grating driver board through the input interface module and to the output terminal of the multi-leaf grating driver board through the forward / reverse output module. The forward / reverse output module is also connected to the forward / reverse indicator light module.

[0003] The above method can only determine whether the output of the multi-page raster driver board is normal. For functional and accuracy testing, actual operation on the equipment is required. Therefore, the existing method has disadvantages such as low production efficiency and high manual testing costs. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, such as low production efficiency and high manual testing cost of accelerator multileaf grating driver boards, and to provide a testing fixture for accelerator multileaf grating driver boards. This provides a hardware foundation for testing accelerator multileaf grating driver boards and can significantly improve the R&D and production efficiency of MLC driver boards in conjunction with the development of subsequent testing programs.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A test fixture for an accelerator multileaf grating driver board includes a multileaf grating test board, a control unit, and an adjustable power supply module. The control unit is connected to the multileaf grating test board, and the multileaf grating test board is also communicatively connected to the accelerator multileaf grating driver board. The adjustable power supply module provides power to the multileaf grating test board and the control unit respectively.

[0007] The multi-leaf grating test board includes a signal interface matching circuit, a protection circuit, a data acquisition module, and a communication module. The signal interface matching circuit is connected to the accelerator multi-leaf grating driver board. The data acquisition module is connected to both the signal interface matching circuit and the communication module. The communication module is connected to the control unit. The adjustable power supply module is connected to the data acquisition module via the protection circuit.

[0008] Furthermore, the signal interface matching circuit includes a PWM motor drive signal adapter interface and a potentiometer feedback signal adapter interface.

[0009] Furthermore, the signal interface matching circuit also includes a proximity sensor, the detection end of which faces the blades of the accelerator multi-leaf grating drive board, and the proximity sensor is connected to the data acquisition module.

[0010] Furthermore, the protection circuit includes an overvoltage protection circuit or an overcurrent protection circuit, both of which are connected in series between the adjustable power supply module and the data acquisition module.

[0011] Furthermore, the protection circuit also includes a signal isolation circuit, which is connected in series between the data acquisition module and the communication module.

[0012] Furthermore, the signal isolation circuit is a digital signal isolation circuit.

[0013] Furthermore, the data acquisition module includes a digital-to-analog conversion module and a processor, wherein the digital-to-analog conversion module is connected to the signal interface matching circuit and the processor, respectively.

[0014] Furthermore, the processor is an FPGA chip or an MCU chip.

[0015] Furthermore, the communication module is a communication module based on the SPI data bus.

[0016] Furthermore, the communication module is a Bluetooth module or a 4G communication module.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] (1) This solution provides the equipment foundation for performance and accuracy testing of the accelerator multileaf grating drive board by setting up a multileaf grating test board and control unit. The multileaf grating test board is configured with signal interface matching circuit, protection circuit, data acquisition module and communication module.

[0019] During operation, the control unit transmits control commands to the data acquisition module to drive the accelerator multi-leaf grating driver board. A signal interface matching circuit adapts the input and output signals of the accelerator multi-leaf grating driver board, and a high-precision proximity sensor is integrated for real-time monitoring of blade positions, enabling data monitoring of the accelerator multi-leaf grating driver board's operating results and blade status. The data acquisition module also performs analog-to-digital conversion and signal processing, providing a device platform for the development of subsequent test programs. Furthermore, a protection circuit is configured between the adjustable power supply module and the data acquisition module to effectively prevent damage to the accelerator multi-leaf grating driver board during testing, improving safety.

[0020] (2) Overall, the test fixture for the multi-leaf grating driver board of this solution provides a hardware foundation for the testing of the multi-leaf grating driver board of the accelerator. It can be used in conjunction with the development of subsequent test programs to significantly improve the R&D and production efficiency of the MLC driver board, reduce the cost of manual testing, and at the same time ensure the safety and reliability of the radiotherapy equipment. Attached Figure Description

[0021] Figure 1 This invention provides a schematic diagram of the overall structure of a test fixture for an accelerator multi-leaf grating driver board according to an embodiment of the present invention.

[0022] Figure 2 This invention provides a schematic diagram of the connection state of a multileaf grating test board for a test fixture of an accelerator multileaf grating driver board, as shown in this embodiment of the invention.

[0023] Figure 3 This invention provides a circuit diagram of the control unit of a test fixture for an accelerator multi-leaf grating driver board according to an embodiment of the present invention.

[0024] In the figure, 1 is the multi-leaf grating test board, 101 is the signal interface matching circuit, 102 is the protection circuit, 103 is the data acquisition module, 104 is the communication module, 2 is the control unit, 3 is the adjustable power supply module, 301 is the 5V power supply, 302 is the 24V power supply, and 4 is the accelerator multi-leaf grating driver board. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0031] Example 1

[0032] like Figure 1 As shown, this embodiment provides a test fixture for an accelerator multileaf grating driver board, including a multileaf grating test board 1, a control unit 2, and an adjustable power supply module 3. The control unit 2 is connected to the multileaf grating test board 1, and the multileaf grating test board 1 is also communicatively connected to the accelerator multileaf grating driver board 4. The adjustable power supply module 3 provides power to the multileaf grating test board 1 and the control unit 2 respectively.

[0033] like Figure 2 As shown, the multileaf grating test board 1 includes a signal interface matching circuit 101, a protection circuit 102, a data acquisition module 103, and a communication module 104. The signal interface matching circuit 101 is connected to the accelerator multileaf grating drive board 4. The data acquisition module 103 is connected to the signal interface matching circuit 101 and the communication module 104 respectively. The communication module 104 is connected to the control unit 2. The adjustable power supply module 3 is connected to the data acquisition module 103 through the protection circuit 102.

[0034] This solution provides the equipment foundation for performance and accuracy testing of the accelerator multileaf grating drive board 4 by setting up a multileaf grating test board 1 and a control unit 2. The multileaf grating test board 1 is configured with a signal interface matching circuit 101, a protection circuit 102, a data acquisition module 103 and a communication module 104.

[0035] During operation, the control unit 2 transmits control commands to the data acquisition module 103 to drive the accelerator multi-leaf grating drive board 4. The input and output signals (such as output voltage) of the accelerator multi-leaf grating drive board 4 are adapted through the signal interface matching circuit 101, and a high-precision proximity sensor is integrated for real-time monitoring of the blade position, realizing data monitoring of the operation results and blade status of the accelerator multi-leaf grating drive board 4. The data acquisition module performs analog-to-digital conversion and signal processing, providing a device carrier for the development of subsequent test programs. Furthermore, a protection circuit is configured between the adjustable power supply module 3 and the data acquisition module 103 to effectively prevent damage to the accelerator multi-leaf grating drive board 4 during testing and improve safety.

[0036] Therefore, the testing of the multi-leaf grating driver board in this solution can significantly improve the R&D and production efficiency of MLC driver boards, reduce manual testing costs, and ensure the safety and reliability of radiotherapy equipment.

[0037] Specifically, the signal interface matching circuit 101 includes a PWM motor drive signal adaptation interface and a potentiometer feedback signal adaptation interface to adapt the input and output signals of the accelerator multi-leaf grating driver board 4.

[0038] The signal interface matching circuit 101 also includes a proximity sensor, the detection end of which faces the blades of the accelerator multi-leaf grating drive board 4. The proximity sensor is connected to the data acquisition module 103 for real-time monitoring of the blade position.

[0039] The adjustable power supply module 3 is used to simulate the actual working voltage, such as 5V / 24V, and may include a 5V power supply 301 and a 24V power supply 302. The 5V power supply 301 is connected to the multi-leaf grating test board 1; the 24V power supply 302 is connected to the multi-leaf grating test board 1 and the control unit 2 respectively.

[0040] For example, 24V voltage is provided for the data acquisition module 103 and the control unit 2, and 5V voltage is provided for the protection circuit 102.

[0041] The protection circuit 102 includes an overvoltage protection circuit or an overcurrent protection circuit, both of which are connected in series between the adjustable power supply module 3 and the data acquisition module 103.

[0042] Optionally, the overvoltage protection circuit clamps the input voltage through a Zener diode, triggering the MOSFET to cut off the power supply.

[0043] The overcurrent protection circuit disconnects the load by triggering the control element through a sampling resistor and a current sensing amplifier.

[0044] Preferably, the protection circuit 102 further includes a signal isolation circuit, which is connected in series between the data acquisition module 103 and the communication module 104. The signal isolation circuit is a digital signal isolation circuit.

[0045] Signal isolation circuits are used between the data acquisition module 103 and the communication module 104 to prevent digital signal crosstalk. For example, the SPI interface uses a magnetic coupling chip to isolate the clock and data lines.

[0046] Preferably, the data acquisition module 103 includes a digital-to-analog conversion module and a processor, with the digital-to-analog conversion module connected to the signal interface matching circuit 101 and the processor, respectively.

[0047] The digital-to-analog converter module can acquire analog signals, such as current and voltage signals, for high-resolution ADC / DAC modules.

[0048] The processor is an FPGA chip or an MCU chip. The MCU chip can be an STM32 chip to realize real-time signal processing.

[0049] The communication module 104 supports communication protocols with the host computer and can be a communication module based on the SPI data bus.

[0050] Specifically, Bluetooth modules or 4G communication modules can be used.

[0051] Control unit 2 simulates control commands to the accelerator multi-leaf grating drive board. In this embodiment, for example... Figure 3 As shown, the SPI control command signal is output using a chip of model NANO100SD3BN.

[0052] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A test fixture for an accelerator multi-leaf grating driver board, characterized in that, It includes a multi-leaf grating test board (1), a control unit (2) and an adjustable power supply module (3). The control unit (2) is connected to the multi-leaf grating test board (1). The multi-leaf grating test board (1) is also communicatively connected to the accelerator multi-leaf grating drive board (4). The adjustable power supply module (3) supplies power to the multi-leaf grating test board (1) and the control unit (2) respectively. The multileaf grating test board (1) includes a signal interface matching circuit (101), a protection circuit (102), a data acquisition module (103), and a communication module (104). The signal interface matching circuit (101) is connected to the accelerator multileaf grating drive board (4). The data acquisition module (103) is connected to the signal interface matching circuit (101) and the communication module (104) respectively. The communication module (104) is connected to the control unit (2). The adjustable power supply module (3) is connected to the data acquisition module (103) through the protection circuit (102).

2. The test fixture for an accelerator multi-leaf grating driver board according to claim 1, characterized in that, The signal interface matching circuit (101) includes a PWM motor drive signal adapter interface and a potentiometer feedback signal adapter interface.

3. The test fixture for an accelerator multi-leaf grating driver board according to claim 2, characterized in that, The signal interface matching circuit (101) also includes a proximity sensor, the detection end of which faces the blades of the accelerator multi-leaf grating drive plate (4), and the proximity sensor is connected to the data acquisition module (103).

4. The test fixture for an accelerator multi-leaf grating driver board according to claim 1, characterized in that, The protection circuit (102) includes an overvoltage protection circuit or an overcurrent protection circuit, both of which are connected in series between the adjustable power supply module (3) and the data acquisition module (103).

5. The test fixture for an accelerator multi-leaf grating driver board according to claim 4, characterized in that, The protection circuit (102) also includes a signal isolation circuit, which is connected in series between the data acquisition module (103) and the communication module (104).

6. The test fixture for an accelerator multi-leaf grating driver board according to claim 5, characterized in that, The signal isolation circuit is a digital signal isolation circuit.

7. The test fixture for an accelerator multi-leaf grating driver board according to claim 1, characterized in that, The data acquisition module (103) includes a digital-to-analog conversion module and a processor. The digital-to-analog conversion module is connected to the signal interface matching circuit (101) and the processor, respectively.

8. The test fixture for an accelerator multi-leaf grating driver board according to claim 7, characterized in that, The processor is an FPGA chip or an MCU chip.

9. The test fixture for an accelerator multi-leaf grating driver board according to claim 1, characterized in that, The communication module (104) is a communication module based on the SPI data bus.

10. The test fixture for an accelerator multi-leaf grating driver board according to claim 1, characterized in that, The communication module (104) is a Bluetooth module or a 4G communication module.

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