Multifunctional diagnostic bed testing tool

Abstract

A multifunctional diagnostic bed test tool belongs to the technical field of medical equipment. The multifunctional diagnostic bed is characterized by comprising a shell and a control circuit arranged in the shell, the control circuit comprises a main control module, a touch screen arranged on the surface of the shell is connected with the main control module, the output end of the main control module is connected with a plurality of driving modules, and output ports of the driving modules are connected with control signal ports of corresponding execution mechanisms of the multifunctional diagnostic bed. Feedback signals of the image display host and the high-voltage signal generator in the multifunctional diagnostic bed are respectively connected with a signal input end of the main control module. The multifunctional diagnostic bed test tool can simulate the use environment of a doctor to systematically test the multifunctional diagnostic bed, including diagnostic bed motion test, system communication test, high-voltage generator ray signal test, software image acquisition test and complete machine aging test. The testing tool is convenient for discovering potential safety hazards of the equipment, and plays a positive role in improving the stability of the equipment and reducing the maintenance rate.

Description

Technical Field

[0001] A multifunctional diagnostic bed testing fixture, belonging to the field of medical equipment technology. Background Technology

[0002] Multifunctional diagnostic beds, as important auxiliary equipment in medical facilities such as hospital radiology departments, play an increasingly important role in assisting doctors in diagnosing diseases. With the continuous development of technology, the functions of multifunctional diagnostic beds are gradually increasing, such as pressure device control and light shield control. Therefore, before leaving the factory, the performance and stability of each function (actuator) become an important basis for ensuring the reliability of multifunctional diagnostic beds.

[0003] In existing technologies, performance testing of multifunctional diagnostic beds is generally conducted manually. This involves technicians operating the equipment according to doctors' usage habits, often for very short periods, insufficient to reveal stability deficiencies, and introducing numerous human factors that can lead to inadequate testing. While testing standards can be established, the repeatability, consistency, and cyclical integrity of the tests remain difficult to guarantee. Therefore, designing a technical solution that can automatically test the various functions of a multifunctional diagnostic bed according to a predetermined procedure, simulating doctor operation, and repeatedly verifying the bed's stability, has become a pressing issue in this field. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a multifunctional diagnostic bed testing fixture that can simulate the doctor's use environment to test the multifunctional diagnostic bed, facilitate the discovery of potential safety hazards of the equipment, and play a positive role in improving equipment stability and reducing maintenance rate.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The multifunctional diagnostic bed testing fixture is characterized by: including a housing and a control circuit disposed in the housing. The control circuit includes a main control module. A touch screen disposed on the surface of the housing is connected to the main control module. Several drive modules are connected to the output end of the main control module. The output port of the drive module is connected to the control signal port of the corresponding actuator of the multifunctional diagnostic bed. The feedback signals of the image display host and the high-voltage signal generator in the multifunctional diagnostic bed are respectively connected to the signal input end of the main control module.

[0006] Preferably, the driving module comprises a perspective driving module, a supine action driving module, a compressor driving module, a point film driving module, a bed surface driving module, a trolley driving module and a shutter driving module; the perspective driving module, the supine action driving module, the compressor driving module, the point film driving module, the bed surface driving module, the trolley driving module and the shutter driving module are connected with the control signal interfaces of the perspective device, the supine motor, the compressor, the point film device, the bed surface driving motor, the trolley motor and the shutter of the multifunctional diagnostic bed respectively.

[0007] Preferably, the first level conversion module and the second level conversion module are arranged, the touch screen is connected with the main control module through the first level conversion module, and the image display host is connected with the main control module through the second level conversion module.

[0008] Preferably, the high-voltage signal feedback module is arranged, the feedback signal of the high-voltage signal generator is connected with the high-voltage signal feedback module, and the high-voltage signal feedback module is connected with the main control module.

[0009] Preferably, the high-voltage signal feedback module is connected with the main control module through the isolation optocoupler.

[0010] Preferably, the alarm is further connected to the signal output end of the main control module.

[0011] Preferably, the storage module is further connected to the signal output end of the main control module.

[0012] Preferably, the driving module comprises a driving chip of ULN2803A type, the input port of the driving chip is connected with the main control module, the output port of the driving chip is connected with the negative pole of the relay coil, the positive pole of the relay coil is connected with the driving power supply, and the normally open contact of the relay is connected with the control signal port of the corresponding executing mechanism of the multifunctional diagnostic bed through the terminal.

[0013] Preferably, in the high-voltage signal feedback module, the isolation optocoupler is an optocoupler chip of TLP521-4XGBSM type, the feedback signal HCNV+ of the high-voltage generator in the multifunctional diagnostic bed is connected with the 1st pin of the optocoupler chip, the feedback signal HCNV- of the high-voltage generator is connected with the 2nd pin of the optocoupler chip, the feedback signal HVNV of the high-voltage generator is connected with the 3rd pin of the optocoupler chip, the feedback signal HANV of the high-voltage generator is connected with the 5th pin of the optocoupler chip, the feedback signal HBNV of the high-voltage generator is connected with the 7th pin of the optocoupler chip, the 4th pin, the 6th pin and the 8th pin of the optocoupler chip are connected with the ground through resistors, the 9th pin, the 11th pin, the 13th pin and the 15th pin of the optocoupler chip are grounded, the 10th pin is suspended, and the 12th pin, the 14th pin and the 16th pin of the optocoupler chip are connected with different input ports of the main control module respectively.

[0014] Compared with the prior art, the multifunctional diagnostic bed has the beneficial effects that:

[0015] The multifunctional diagnostic bed test tool can simulate the use environment of doctors to test the multifunctional diagnostic bed, including diagnostic bed movement test, system communication test, high voltage generator radiation signal test, software image acquisition test and whole machine aging test.

[0016] The storage module includes test programs of different bed bodies and the limit data of various bed bodies, and the soft limit of each test tool is saved by operating the multifunctional diagnostic bed movement console and the touch screen interface of the tool system, and after the limit is saved, each movement is carried out within the saved movement stroke when the tool is tested.

[0017] The multifunctional diagnostic bed test tool can test the perspective and exposure functions and the high voltage generator exposure feedback signal. The test flow execution times are recorded to facilitate test data statistics, and the error feedback mechanism can enable the operator to find the problem movement in time. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a shaft drawing of the multifunctional diagnostic bed test tool.

[0019] Figure 2 It is a bottom view of the upper shell of the multifunctional diagnostic bed test tool.

[0020] Figure 3 It is a control circuit principle block diagram of the multifunctional diagnostic bed test tool.

[0021] Figure 4 It is a control circuit principle block diagram of the multifunctional diagnostic bed test tool.

[0022] Figures 5~7 It is a control circuit principle block diagram of the multifunctional diagnostic bed test tool.

[0023] Figure 8 It is a control circuit principle block diagram of the multifunctional diagnostic bed test tool.

[0024] Figures 9~10 It is a control circuit principle block diagram of the multifunctional diagnostic bed test tool.

[0025] Figure 11 It is a control circuit principle block diagram of the multifunctional diagnostic bed test tool.

[0026] Figure 12 It is a control circuit principle block diagram of the multifunctional diagnostic bed test tool.

[0027] Figure 13The alarm circuit principle diagram of the multifunctional diagnostic bed test tool control circuit.

[0028] 1, touch screen 2, upper shell 3, buckle. DETAILED DESCRIPTION

[0029] Figures 1~13 It is the best embodiment of the utility model, and the following will be combined with the drawings to further explain the utility model. Figures 1~13 The utility model is further explained.

[0030] As shown in Figures 1~2 A multifunctional diagnostic bed test tool (hereinafter referred to as test tool) comprises a shell, and the shell is formed by the upper shell 2 and the lower shell (not shown in the drawing) being buckled up and down. The touch screen 1 is arranged in the middle part of the upper shell 2. The control circuit of the test tool is arranged in the shell, and the touch screen 1 is connected to the control circuit. The data interface is arranged on the side of the shell, and the communication with the multifunctional diagnostic bed is realized through the data interface.

[0031] As shown in Figure 3 The control circuit of the test tool comprises a main control module, and the output end of the main control module is connected to a plurality of drive modules. The drive modules replace the controller in the multifunctional diagnostic bed, are connected to the interfaces of the corresponding executing mechanisms in the multifunctional diagnostic bed, drive the corresponding executing mechanisms to act, and realize the realization of various functions. Specifically, the drive modules comprise a perspective driving module, a supine action driving module, a compressor driving module, a point film driving module, a bed surface driving module, a trolley driving module and a light shutter driving module.

[0032] In the actual product, the control signal interfaces of the perspective device, the supine motor, the compressor, the point film device, the bed surface action driving motor, the trolley motor and the light shutter in the multifunctional diagnostic bed are connected to the controller in the multifunctional diagnostic bed in the form of connectors, and the controller in the multifunctional diagnostic bed is connected to the corresponding interfaces. In the test tool, the main control module replaces the controller of the multifunctional diagnostic bed, and the perspective driving module, the supine action driving module, the compressor driving module, the point film driving module, the bed surface driving module, the trolley driving module and the light shutter driving module are connected to the control signal interfaces of the perspective device, the supine motor, the compressor, the point film device, the bed surface action driving motor, the trolley motor and the light shutter in the multifunctional diagnostic bed respectively, so as to realize the control of the corresponding devices.

[0033] The uplink touch screen 1 is connected with the input end of the main control module through the first level conversion module, the signal output end of the image display host in the multifunctional diagnostic bed is connected with the input end of the main control module through the second level conversion module, the signal output end of the controller in the multifunctional diagnostic bed is connected with the main control module through the third level conversion module, the feedback signal output end of the high-voltage generator in the multifunctional diagnostic bed is connected with the main control module through the high-voltage signal feedback module and the isolation optical coupling. The output end of the main control module is also connected with the storage module and the alarm, when the feedback signal of the multifunctional diagnostic bed is abnormal, the main control module alarms through the alarm.

[0034] As Figure 4 The main control module includes a single-chip microcomputer chip U1 with the model of STM32F103RCT6, the 1 pin of the chip U1 is connected with the ground through the resistor R2. The 2~4 pins of the chip U1 are suspended, the 5 pin of the chip U1 is connected with the capacitor C21 and one end of the crystal oscillator X1, the 6 pin of the chip U1 is connected with one end of the capacitor C20 and the other end of the crystal oscillator X1, the other ends of the capacitors C20~21 are connected with the ground. The 7 pin of the chip U1 is connected with the resistor R6 and one end of the capacitor C6, the other end of the resistor R6 is connected with the 3.3V power supply, the other end of the capacitor C6 is connected with the ground. The 7~11 pins and the 37~40 pins of the chip U1 are reserved ports. The 12 pin of the chip U1 is connected with the ground, the 13 pin is connected with the 3.3V power supply and connected with the ground through the capacitor C7. The 14~15 pins of the chip U1 are suspended, the 16~17 pins of the chip U1 are connected with the second level conversion module, the 18 pin of the chip U1 is connected with the ground, the 19 pin is connected with the 3.3V power supply and connected with the ground through the capacitor C2.

[0035] The 20~25 pins and the 41 pin, 44 pin of the chip U1 are used to connect the above-mentioned bed driving module, the trolley driving module and the shutter driving module. The 26~27 pins, 55~57 pins and 61 pin of the chip U1 are used to connect the above-mentioned perspective driving module, the supine action driving module and the compressor driving module. The 28 pin of the chip U1 is grounded through the resistance R1, the 29~30 pins of the chip U1 are connected with the third level conversion module. The 31 pin of the chip U1 is grounded, and the 32 pin is grounded through the capacitor C3. The 33~34 pins of the chip U1 are suspended. The 35~36 pins and the 52 pin of the chip U1 are connected with the isolation optical coupler. The 42~43 pins of the chip U1 are connected with the first level conversion module. The 45 pin of the chip U1 is suspended, the 46, 49 pins of the chip U1 are connected with the 3 pin and the 4 pin of the terminal H1 respectively, the 1 pin of the terminal H1 is connected with the 3.3V power supply, the 2 pin is grounded, and the clock signal is introduced through the terminal H1. The 47 pin of the chip U1 is grounded, the 48 pin is connected with the 3.3V power supply and grounded through the capacitor C5. The 50~51 pins and the 54 pin of the chip U1 are suspended, and the 53 pin is connected with the alarm. The 58~59 pins of the chip U1 are connected with the storage module, the 60 pin of the chip U1 is connected with the 2 pin of the terminal H2 through the resistance R3, the 1 pin of the terminal H2 is connected with the 3.3V power supply, the 1 pin of the terminal H2 is grounded, the 62 pin of the chip U1 is suspended, the 63 pin is grounded, and the 64 pin is connected with the 3.3V power supply and grounded through the capacitor C4.

[0036] The above-mentioned driving module (including: perspective driving module, supine action driving module, compressor driving module, point driving module, bed driving module, trolley driving module and shutter driving module) adopts the same circuit structure, for example, the perspective driving module is shown in detail as follows: Figures 5~7 The driving module includes the chip U2 with the model of ULN2803A, the 1~5 pins of the chip U2 are connected with the 26~27 pins and the 55~57 pins of the chip U1 respectively, the 8 pin of the chip U2 is connected with the 61 pin of the chip U1, the 6~7 pins and the 12~13 pins of the chip U2 are suspended, the 9 pin is grounded, and the 10 pin is connected with the 12V power supply.

[0037] The 18 pin of the chip U2 is connected with the cathode of the light emitting diode LED5, the anode of the diode D2 and the 1 pin of the relay K1 (with the model of 943-1C-12DS). The 12V power supply is connected with one end of the resistance R11, the 4 pin of the relay K1 and the cathode of the diode D2, and the other end of the resistance R11 is connected with the anode of the light emitting diode LED5. The two ends of the normally open contact of the relay K1 are connected with the terminal CN4 respectively. The switch signal is introduced through the terminal CN4, and the terminal CN4 is connected with the control signal interface of the perspective device in the multifunctional diagnostic bed, which is used to replace the output port of the controller in the multifunctional diagnostic bed. When the corresponding contact of the terminal CN4 is closed, the perspective device in the multifunctional diagnostic bed starts to work.

[0038] The 11th pin of the chip U2 is connected with the interface of the retraction of the compressor in the multifunctional diagnostic bed through the same circuit structure. Figures 6~7 The 14th pin of the chip U2 is connected with the interface of the output of the compressor in the multifunctional diagnostic bed through the same circuit structure. Figures 6~7 The 15th and 16th pins of the chip U2 are connected with the interfaces of the two actions of the multifunctional diagnostic bed through the same circuit structure. Figures 6~7 The 17th pin of the chip U2 is connected with the interface of the point device in the multifunctional diagnostic bed through the same circuit structure. Figures 6~7 The same type of chip U2 is arranged, and the same circuit structure is connected with the interface of the point device in the multifunctional diagnostic bed. Figures 6~7 The same type of chip U2 is arranged, and the same circuit structure is connected with the interface of the point device in the multifunctional diagnostic bed.

[0039] As shown in Figure 8 The touch screen 1 is plugged with the plug DSUB3, the 6th pin of the plug DSUB3 is connected with the 8th pin of the chip U4 through the fuse F8, the 7th pin of the plug DSUB3 is connected with the 7th pin of the chip U4 through the fuse F7, the type of the chip U4 is SP3232EN, that is, the first level conversion module. The 1st pin of the chip U4 is connected with the 3rd pin through the capacitor C8, the 2nd pin of the chip U4 is connected with the 3.3V power supply through the capacitor C9, the 4th pin of the chip U4 is connected with the 5th pin through the capacitor C10, the 6th pin of the chip U4 is grounded through the capacitor C11. The 9th and 10th pins of the chip U4 are connected with the 30th and 29th pins of the chip U1 respectively, the 11th to 14th pins of the chip U4 are suspended, the 15th pin of the chip U4 is connected with the 16th pin through the capacitor C23, and the 16th pin of the chip U4 is connected with the 3.3V power supply.

[0040] As shown in Figures 9~10As shown, the image display host of the multifunctional diagnostic bed is plugged with plug DSUB2, the 6th pin of plug DSUB2 is connected with the 13th pin of chip U13 through fuse F2, and the 7th pin of plug DSUB2 is connected with the 14th pin of chip U13 through fuse F2; the multifunctional diagnostic bed controller of the multifunctional diagnostic bed is plugged with plug DSUB1, the 6th pin of plug DSUB1 is connected with the 8th pin of chip U13 through fuse F4, and the 7th pin of plug DSUB1 is connected with the 7th pin of chip U13 through fuse F3; the model of chip U13 is also SP3232EN, i.e. the first level conversion module and the third level conversion module mentioned above. The 1st pin of chip U13 is connected with the 3rd pin through capacitor C15, the 2nd pin of chip U13 is connected with 3.3V power supply through capacitor C16, the 4th pin of chip U13 is connected with the 5th pin through capacitor C17, and the 6th pin of chip U13 is grounded through capacitor C18. The 9th-10th pins of chip U13 are connected with the 17th pin and the 16th pin of chip U1 respectively, the 11th-12th pins of chip U13 are connected with the 42nd pin and the 43rd pin of chip U1, the 15th pin of chip U13 is connected with the 16th pin thereof through capacitor C19, and the 16th pin of chip U13 is connected with 3.3V power supply.

[0041] Chip U4 is a serial communication chip between touch screen 1 and chip U13, chip U13 is a serial communication chip between image display host, multifunctional diagnostic bed controller and chip U1, voltage signals and TTL signals are converted through chip U4 and U13 to realize data communication between two modules.

[0042] As shown in Figure 11 Chip U12 of storage module is of sampling model AT24C02C-PUM, the 1st-4th pins of chip U12 are grounded, the 5th pin of chip U12 is connected with the 59th pin of chip U1 and one end of resistor R5, the 6th pin of chip U12 is connected with the 58th pin of chip U1 and one end of resistor R4, the 7th pin of chip U12 is connected with one end of capacitor C1, and the 8th pin of chip U12 is connected with 3.3V power supply together with the other ends of capacitor C1 and resistors R4-R5. Different bed body test programs and various bed body limit data are included in the storage module, and each tool test soft limit is saved through operating the multifunctional diagnostic bed motion console and tool system touch screen interface, and after the limit is saved, each motion is performed within the saved motion stroke when the tool is tested.

[0043] As shown in Figure 12The high voltage signal feedback module shown above, the isolation optical coupling sampling model is TLP521-4XGBSM chip U19. The feedback signal HCNV+ of the high voltage generator in the multifunctional diagnostic bed is connected to the 1 pin of chip U19 through the light emitting diode LED7, and the feedback signal HCNV- of the high voltage generator is connected to the 2 pin of chip U19 through the resistor R29. The feedback signal HVNV of the high voltage generator is connected to the 3 pin of chip U19 through the light emitting diode LED22, the feedback signal HANV of the high voltage generator is connected to the 5 pin of chip U19, and the feedback signal HBNV of the high voltage generator is connected to the 7 pin of chip U19. The 4 pin of chip U19 is grounded through the resistor R30, the 6 pin of chip U19 is grounded through the resistor R31, and the 8 pin of chip U19 is grounded through the resistor R32.

[0044] The 9 pin, 11 pin, 13 pin and 15 pin of chip U19 are grounded, and the 10 pin is suspended. The 12 pin of chip U19 is connected to the 52 pin of chip U1 and one end of resistor R36, the 14 pin of chip U19 is connected to the 36 pin of chip U1 and one end of resistor R35, the 16 pin of chip U19 is connected to the 35 pin of chip U1 and one end of resistor R34, and the other end of resistors R34-R36 is connected to 3.3V power supply.

[0045] As shown in Figure 13 The alarm includes a buzzer BUZZER1, the 53 pin of chip U1 is connected to one end of resistor R28, the other end of resistor R28 is connected to one end of resistor R27 and the base of triode Q1, the emitter of triode Q1 and the other end of resistor R27 are grounded. The 3.3V power supply is connected to the cathode of diode D18 and the positive electrode of the power supply of buzzer BUZZER1 at the same time, the negative electrode of the power supply of buzzer BUZZER1 and the anode of diode D18 are connected to the collector of triode Q1.

[0046] The specific working process and working principle are as follows:

[0047] Connect the data interface of the test tool to the communication interface of the multifunctional diagnostic bed, and replace the controller of the multifunctional diagnostic bed with the drive module in the test tool through the main control module, and use the above-mentioned perspective drive module, supine action drive module, compressor drive module, point film drive module, bed surface drive module, trolley drive module and shutter drive module to respectively connect the control signal interfaces of the perspective device, supine motor, compressor, point film device, bed surface drive motor, trolley motor and shutter of the multifunctional diagnostic bed. At the same time, connect the feedback signal of the high voltage generator of the multifunctional diagnostic bed to the high voltage signal feedback module.

[0048] The data communication is carried out with the touch screen 1 and the multifunctional diagnostic bed through the serial port, the multifunctional diagnostic bed sends the bed body potentiometer data (multifunctional diagnostic bed controller) and the motion channel to the main control module, the system saves the data according to the touch screen instruction and issues the motion instruction to the multifunctional diagnostic bed, the motion process and switching of the multifunctional diagnostic bed are controlled by the main control module, the system records the cycle number of the motion test and can indicate the channel when a fault occurs in the process, so that the tester can check the hidden danger of the multifunctional diagnostic bed equipment.

[0049] In the present test tool, the opening and closing of the relay contact in the above-mentioned driving module is used to simulate the rocker operation of the doctor, when entering the automatic test, the main control module sets the opening and closing of the relay according to the established process, and then determines whether the motion is in place according to the potentiometer channel and data fed back by the serial port, after the digital image system is ready, the generator emits rays through the control of the perspective or exposure relay, and the corresponding image is collected on the image software, in the process of exposure, the change of part of the key signal level of the generator is transmitted to the main control module through the isolation optical coupling, so as to determine whether the high-voltage part of the system works normally.

[0050] In order to enable the tester to find the problems in the process of tool test in time, an alarm is arranged, in addition to displaying the error channel on the touch screen 1 interface, the multifunctional diagnostic bed error information is also sent to the acquisition software through the serial port data and displayed on the software interface, so as to facilitate the operator to process the error information in time. The system retains part of the key functions of the original multifunctional diagnostic bed console, which is convenient for the control of the motion enable, exposure enable and compressor enable system enable keys, the system retains the emergency stop switch function, which can shut down in time when the multifunctional diagnostic bed moves abnormally, preventing the damage of the device.

[0051] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can modify or change the above-mentioned technical content to equivalent embodiments. However, any simple modification, equivalent change and modification of the above-mentioned embodiments without departing from the technical solution of the present application, according to the technical essence of the present application, still belongs to the protection scope of the technical solution of the present application.

Claims

1. A multi-functional diagnostic bed test fixture, characterized by: The utility model relates to a multifunctional diagnostic bed control system, including shell and the control circuit that sets up in the shell, the control circuit includes main control module, the touch screen of setting in the shell surface is connected with main control module, and the output of main control module is connected with a plurality of drive module, and the output port of drive module is connected with the control signal port of multifunctional diagnostic bed corresponding executive mechanism, and the feedback signal of image display host computer and high voltage signal generator in multifunctional diagnostic bed is connected signal input of main control module respectively.

2. The multi-functional diagnostic bed test fixture of claim 1, wherein: The drive module includes a perspective drive module, a supine action drive module, a compressor drive module, a point film drive module, a bed surface drive module, a trolley drive module, and a light shutter drive module; the perspective drive module, the supine action drive module, the compressor drive module, the point film drive module, the bed surface drive module, the trolley drive module, and the light shutter drive module are respectively connected with the control signal interface of the perspective device, the supine motor, the compressor, the point film device, the bed surface action drive motor, the trolley motor, and the light shutter in the multifunctional diagnostic bed.

3. The multi-functional diagnostic bed test fixture of claim 1, wherein: The utility model is provided with first level conversion module and second level conversion module, and the touch screen is connected with the main control module through the first level conversion module, and the image display host computer is connected with the main control module through the second level conversion module.

4. The multi-functional diagnostic bed test fixture of claim 1, wherein: The utility model is provided with high voltage signal feedback module, and the feedback signal of high voltage signal generator is connected with the high voltage signal feedback module, and the high voltage signal feedback module is connected with the main control module.

5. The multi-functional diagnostic bed test fixture of claim 4, wherein: The high voltage signal feedback module is connected with the main control module through the isolation optocoupler.

6. The multi-functional diagnostic bed test fixture of claim 1, wherein: An alarm is further connected to the signal output of the main control module.

7. The multi-functional diagnostic bed test fixture of claim 1, wherein: A storage module is further connected to the signal output of the main control module.

8. The multi-functional diagnostic bed test fixture of claim 1 or 2, wherein: The drive module includes a drive chip of ULN2803A type, the input port of the drive chip is connected with the main control module, the output port of the drive chip is connected with the negative pole of the relay coil, the positive pole of the relay coil is connected with the drive power supply, and the normally open contact of the relay is connected with the control signal port of the corresponding executive mechanism of the multifunctional diagnostic bed through the terminal.

9. The multi-functional diagnostic bed test fixture of claim 5, wherein: In the high voltage signal feedback module, the isolation optocoupler is an optical coupling chip of TLP521-4XGBSM type, the feedback signal HCNV+ of the high voltage generator in the multifunctional diagnostic bed is connected with pin 1 of the optical coupling chip, the feedback signal HCNV- of the high voltage generator is connected with pin 2 of the optical coupling chip, the feedback signal HVNV of the high voltage generator is connected with pin 3 of the optical coupling chip, the feedback signal HANV of the high voltage generator is connected with pin 5 of the optical coupling chip, the feedback signal HBNV of the high voltage generator is connected with pin 7 of the optical coupling chip, pins 4, 6 and 8 of the optical coupling chip are respectively connected with the ground through resistors, pins 9, 11, 13 and 15 of the optical coupling chip are grounded, pin 10 is suspended, and pins 12, 14 and 16 of the optical coupling chip are respectively connected with different input ports of the main control module.

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