A detection device and method for detecting X-ray machine tubes.

Abstract

This invention discloses a detection device and method for inspecting X-ray machine tubes. The device includes: a PC for human-machine interaction and control, connected to a programmable logic controller (PLC); the PLC is connected to a high-frequency high-voltage device, a transmission mechanism, a filament circuit board, and a feedback circuit board, for receiving signals and controlling their operation; a temperature sensor for measuring the temperature of the X-ray machine tube, connected to the PLC, for controlling its temperature; a high-frequency high-voltage device connected to the X-ray machine tube to be inspected, providing it with high-frequency high voltage to generate X-rays; the transmission mechanism for placing and transporting the X-ray machine tube to be inspected; and the filament circuit board connected to the X-ray machine tube to be inspected, for lighting the filament. The method uses the above-mentioned detection device to inspect the X-ray machine tube to be inspected.

Description

Technical Field

[0001] This invention relates to a detection device and method, and more particularly to a detection device and method for detecting X-ray machine tubes. Background Technology

[0002] In the existing technology, the research and development technology of X-ray machine tubes has made great progress. However, there are very few related X-ray machine tube testing equipment. Some existing X-ray machine tube testing equipment uses relays and instruments for control and display, while others use microcontroller technology for control. Microcontrollers need to directly control hardware interfaces and registers to realize functions. Microcontrollers have relatively low anti-interference ability, stability and reliability. Summary of the Invention

[0003] Purpose of the invention: The technical problem to be solved by the present invention is to provide a detection device and method for detecting X-ray machine tubes, addressing the shortcomings of the prior art.

[0004] To solve the above-mentioned technical problems, the present invention discloses a detection device and method for detecting X-ray machine tubes. The device includes: a PC for human-computer interaction and control of the detection device; the PC is connected to and communicates with a programmable logic controller (PLC); the PLC is connected to a high-frequency high-voltage device, a transmission mechanism, a filament circuit board, and a feedback circuit board, and is used to receive signals from them and control their operation.

[0005] It also includes a temperature sensor for measuring the temperature of the X-ray machine tube, which is connected to a programmable logic controller (PLC). The PLC is also used to control the temperature of the X-ray machine tube.

[0006] The high-frequency high-voltage device is connected to the X-ray tube of the X-ray machine to be tested, and provides high-frequency high voltage to the X-ray source assembly in the X-ray tube to generate X-rays;

[0007] The transmission mechanism is used to place the X-ray tube to be inspected and transport it to the inspection environment;

[0008] The filament circuit board is connected to the X-ray tube of the X-ray machine to be tested and is used to light up the filament in the X-ray tube.

[0009] Furthermore, the programmable logic controller (PLC) includes at least: an Ethernet port, a digital input interface I, a digital output interface Q, an analog input module AI, an analog output module AQ, and an RTD module.

[0010] Furthermore, the Ethernet port of the programmable logic controller (PLC) is connected to the Ethernet port of the PC via a network cable.

[0011] Furthermore, the high-frequency high-voltage device includes at least four input terminals and two output terminals, wherein:

[0012] The first input terminal of the high-frequency high-voltage device is connected to the output terminal of the analog output module AQ of the programmable logic controller (PLC) for adjusting the high-frequency high-voltage output of the high-frequency high-voltage device.

[0013] The second and third input terminals of the high-frequency high-voltage device are connected to the digital output interface Q of the programmable logic controller (PLC) for controlling the start and stop of the high-frequency high-voltage device.

[0014] The fourth input terminal of the high-frequency high-voltage device is connected to the output terminal of the feedback circuit board to receive the voltage feedback signal output by the feedback circuit board.

[0015] The first output terminal of the high-frequency high-voltage device is connected to the digital input interface I of the programmable logic controller (PLC) to monitor its output current and voltage and to issue an alarm.

[0016] The second output terminal of the high-frequency high-voltage device is connected to the input terminal of the X-ray tube to be tested, and is used to provide high-frequency high voltage to the X-ray tube to generate X-rays.

[0017] Furthermore, the filament circuit board includes at least two input terminals and two output terminals, wherein:

[0018] The first input terminal of the filament circuit board is connected to the digital output interface Q of the programmable logic controller (PLC) for controlling the start or stop of the filament circuit board.

[0019] The second input terminal of the filament circuit board is connected to the analog output AQ interface of the programmable logic controller (PLC) for adjusting the output current of the filament circuit board.

[0020] The first output terminal of the filament circuit board is connected to the digital input interface I of the programmable logic controller (PLC) for filament circuit board fault alarm.

[0021] The second output terminal of the filament circuit board is connected to the input terminal of the X-ray tube to be tested, and is used to light the filament.

[0022] Furthermore, the input terminal of the feedback circuit board is connected to the output terminal of the X-ray tube to be tested, and the feedback voltage and current of the X-ray source component in the X-ray tube to be tested are output to the feedback circuit board.

[0023] The feedback circuit board converts the aforementioned feedback voltage and current into a DC 0-5V voltage signal and outputs it to the analog input module AI of the high-frequency high-voltage device and the programmable logic controller (PLC).

[0024] Furthermore, the transmission mechanism includes: a platform supporting the entire transmission mechanism, a guide rail fixed on the platform, a trolley sliding along the guide rail, a limit switch located at the front end of the trolley, a servo motor located on the trolley for driving its movement, and an X-ray tube to be tested placed on the trolley.

[0025] The limit switch is connected to the digital input interface I of the programmable logic controller (PLC) to send trigger signals, and the servo motor (servo driver) is connected to the digital output interface Q of the PLC to receive control signals.

[0026] Furthermore, the temperature sensor is installed in the outer shell of the X-ray tube of the X-ray machine to be tested, and its output terminal is connected to the RTD module of the programmable logic controller (PLC) to transmit temperature signals.

[0027] The X-ray tube of the X-ray machine is equipped with a heat dissipation device. The control terminal of the heat dissipation device is connected to the digital output interface Q of the programmable logic controller (PLC) to control the start and stop of the heat dissipation device and keep the temperature of the X-ray tube within a set range.

[0028] Furthermore, the high-frequency high-voltage device rectifies the AC 220V power supply to generate a DC 300V voltage, and then inverts it to generate a high-frequency high voltage of not less than 50kHz, which is output through its second output terminal.

[0029] A method for inspecting X-ray machine tubes, using the aforementioned inspection device to inspect the X-ray machine tube to be inspected, is as follows:

[0030] Step 1: Set the position parameters of the X-ray tube to be inspected on the PC, move the X-ray tube placed on the transmission mechanism to the inspection environment, and the programmable logic controller (PLC) determines that the X-ray tube has moved to the target position based on the feedback signal returned by the transmission mechanism, and then allows the subsequent inspection process to run.

[0031] Step 2: Set the detection parameters of the X-ray tube on the PC and send a preparatory signal on the PC. After receiving the preparatory signal, the programmable logic controller (PLC) starts the output voltage of the filament circuit board to light up the filament inside the X-ray tube.

[0032] Step 3: The programmable logic controller (PLC) determines whether the filament of the X-ray machine tube is lit based on the feedback signal. If so, it sends an enable signal to the PC; otherwise, it sends an disable signal and issues an alarm signal.

[0033] Step 4: After receiving the start signal from the programmable logic controller (PLC), the PC displays the signal.

[0034] Step 5: Control the programmable logic controller (PLC) to send a start signal, control the high-frequency high-voltage device to output high-frequency high-voltage power to the X-ray tube of the X-ray machine, and convert it into a low-voltage signal through the feedback circuit board and output it to the high-frequency high-voltage device and the programmable logic controller (PLC) for closed-loop control and data acquisition. The programmable logic controller (PLC) receives the feedback voltage data sent by the feedback circuit, processes the data, and displays and saves the data on the PC.

[0035] Step 6: During the above detection process, the temperature sensor outputs the temperature and its changes of the X-ray tube to the programmable logic controller (PLC) for data processing, and simultaneously sends the data to the PC for storage and display. When the PLC determines that the temperature of the X-ray tube exceeds the set value based on the signal received by the temperature sensor, the PLC output interface Q starts the heat dissipation device on the X-ray tube to dissipate heat. When the temperature is lower than the set value, the PLC output interface Q shuts down the operation of the heat dissipation device on the X-ray tube.

[0036] Step 7: After the test is completed, save all data on the PC and analyze it; the PC sends a signal to the programmable logic controller (PLC) to move the X-ray tube placed on the transmission mechanism to its original position, thus completing the test.

[0037] Beneficial effects:

[0038] 1. This invention is easy to operate, and the X-ray tube detection parameter data results are accurate, stable, and reliable. It has a fast detection speed and a high degree of automation.

[0039] 2. It can quickly and accurately detect the parameters of the X-ray machine tube, improve the company's production capacity and efficiency, and achieve better economic benefits. Attached Figure Description

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0041] Figure 1 This is a schematic diagram of the device in this invention.

[0042] Figure 2 This is a flowchart of the method in this invention.

[0043] Figure 3 This is a schematic diagram of the transmission mechanism in one embodiment.

[0044] Figure 4 This is a block diagram of a closed-loop control system in one embodiment.

[0045] Figure 5 This is a schematic diagram of the PLC module and its interface in this invention.

[0046] In the diagram, 1 is a PC, 2 is a PLC, 3 is a transmission mechanism, 4 is a high-frequency high-voltage device, 5 is a filament circuit board, 6 is an X-ray machine tube, 7 is a feedback circuit board, and 8 is a temperature sensor. Detailed Implementation

[0047] This invention provides a device and method for testing X-ray machine tubes using a programmable logic controller (PLC) as the main controller. This overcomes the shortcomings of existing technologies caused by radiation interference and system instability. The invention provides the following technical solutions: In this testing device, opto-isolation circuits are used for the PLC's input / output interfaces, and anti-interference internal modules are employed to prevent radiation interference and maintain system stability. The PLC's PID control program uses closed-loop control technology to manage the voltage, current, and time input and output of the X-ray machine tube, ensuring the reliability and stability of the system's testing results. A human-machine interface is used between the PC and the PLC, facilitating the exchange and transmission of process control data and information, monitoring the testing device's operation, and promptly identifying and handling faults. This effectively manages risks and reduces costs. During high-voltage and long-term testing, the X-ray machine tube experiences significant temperature changes, greatly affecting the parameter testing results. The PLC program instructions are used to detect and monitor the X-ray machine tube's temperature in real time, controlling the operation of the heat dissipation device on the X-ray machine tube to keep the temperature within a set range.

[0048] like Figure 1 The present invention proposes a detection device for detecting X-ray machine tubes, comprising a PC 1, a PLC (Programmable Logic Controller) 2, a transmission mechanism 3, a high-frequency high-voltage device 4, a filament circuit board 5, an X-ray machine tube 6, a feedback circuit board 7, and a temperature sensor 8.

[0049] The PC 1 is equipped with HMI (Human Machine Interface) software, which is used to display the system's production process flow chart and system detection data record table, alarm record, and other screens;

[0050] The PLC2 includes: a central processing unit, an Ethernet port, a digital input interface I, a digital output interface Q, an analog input module AI, an analog output module AQ, and an RTD module. The PLC wiring diagram is as follows. Figure 5 As shown;

[0051] The Ethernet port of the PLC2 is connected to the network port of the PC1 via a network cable for communication with the PC1.

[0052] The high-frequency high-voltage device 4 has four input terminals and two output terminals; the first input terminal is connected to the output interface 0+ of the analog output module AQ of the PLC2, and is used to adjust the high-frequency high-voltage output of the high-frequency high-voltage device 4.

[0053] The second and third input terminals of the high-frequency high-voltage device 4 are respectively connected to Q0.6 and Q0.7 of the digital output interface Q of the PLC2, and are used to control the start and stop of the high-frequency high-voltage device 4.

[0054] The first output terminal of the high-frequency high-voltage device 4 is connected to I0.6 of the digital input interface I of the PLC2, and is used to output an alarm to the PLC2 when the voltage and current output by the high-frequency high-voltage device 4 are higher than the set value, so as to stop the high-voltage output of the high-frequency high-voltage device 4.

[0055] Furthermore, the input terminal of the X-ray machine tube 6 is also connected to the second output terminal of the high-frequency high-voltage device 4;

[0056] In the high-frequency high-voltage device 4, the AC 220V power supply is rectified to generate a DC 300V voltage, which is applied to the inverter. The inverter generates a high-frequency high voltage of not less than 50kHz, which is output to the X-ray source assembly of the X-ray machine tube 6 through the matching circuit to generate X-rays.

[0057] Furthermore, the output terminal of the X-ray tube 6 is also connected to the input terminal of the feedback circuit board 7, so as to output the feedback voltage of the X-ray source component in the X-ray tube 6 to the feedback circuit board 7.

[0058] The output terminal of the feedback circuit board 7 is connected to the fourth input terminal of the high-frequency high-voltage device 4. The function of the feedback circuit board 7 is to convert the feedback voltage and current of the X-ray source component in the X-ray machine tube 6 into DC 0-5V voltage and output it to the high-frequency high-voltage device 4 and the analog input terminal AI of PLC2 for system closed-loop control and data acquisition.

[0059] Furthermore, the system closed-loop control process is as follows: Figure 4 As shown, when the detection device is working, the process control value PVf is first acquired by the PLC analog input module AI to collect the data output by the feedback circuit board 7. When a deviation EV occurs between the process control value PVf and the set parameter value SV, the proportional controller (PLC) will automatically adjust the change of the variable MV(t) output value. The high voltage output by the high frequency high voltage device 4 changes accordingly, and the feedback voltage PV(t) output by the X-ray machine tube 6 also changes accordingly. The change of the control variable MV(t) in the PID adjustment instruction program in the PLC will eventually change in the direction of reducing the deviation EV, so that the deviation EV will become smaller and smaller. When the process control value PVf and the set parameter value SV finally tend to be consistent, the parameter detection result meets the system requirements.

[0060] Furthermore, the input end of the X-ray machine tube 6 is also connected to the output end of the filament circuit board 5;

[0061] In the filament circuit board 5, the 24V DC voltage is adjusted to generate an adjustable DC voltage of 0-24V, which is then inverted by the circuit into a 1KHZ square wave voltage and output to the filament of the X-ray machine tube 6 after being isolated by a transformer, so as to light up the filament of the X-ray machine tube 6.

[0062] The input terminal of the filament circuit board 5 is connected to Q0.1 of the digital output interface Q of the PLC2 to control the start or stop of the filament circuit board 5.

[0063] The input terminal of the filament circuit board 5 is connected to the analog output AQ interface 1+ of the PLC2 to adjust the current output of the filament circuit board 5 and control the current of the filament of the X-ray machine tube 6.

[0064] The alarm circuit output terminal in the filament circuit board 5 is connected to I0.2 of the digital input interface I of the PLC2, and is used to stop the high-frequency high-voltage device 4 from working when the filament circuit board 5 is faulty and alarmed.

[0065] Furthermore, the temperature sensor 8 is a platinum resistance thermometer PT100. When detecting the X-ray tube 6, the PT100 is installed on the outer shell of the X-ray tube 6. The output terminal of the PT100 is connected to the RTD module of the PLC2 to measure the temperature change of the X-ray tube 6.

[0066] Furthermore, a heat dissipation device (which can be a fan, air conditioner, or other heat dissipation device) is also installed on the outer shell of the X-ray tube 6. The digital output interface Q of PLC2 is connected to the heat dissipation device on the X-ray tube 6 (hereinafter, a fan is used as an example). During the detection process, when the programmable logic controller PLC2 determines that the temperature of the X-ray tube 6 exceeds the set value based on the signal received by the temperature sensor 8, the digital output interface Q of PLC2 starts the cooling fan on the X-ray tube 6 to dissipate heat from the X-ray tube 6. When the temperature is lower than the set value, the digital output interface Q of PLC2 shuts down the operation of the cooling fan on the X-ray tube 6. When the temperature of the X-ray tube 6 exceeds the upper limit of the set value, PLC2 stops the high-voltage output of the high-frequency high-voltage device 4, so that the temperature change of the X-ray tube 6 is kept within the set range.

[0067] Furthermore, the transmission mechanism 3 is composed of a moving trolley 31, an X-ray machine tube 6, a limit switch 33, a platform 34, a guide rail 35, a servo motor 36, etc. Figure 3As shown, the X-ray machine tube 6 is moved into the lead box for testing. The platform 34 is placed horizontally on the ground to support the entire transmission mechanism 3. The guide rail 35 is set on the upper surface of the platform 34. The moving trolley 31 slides along the guide rail 35. The limit switch 33 is set at the front end of the moving trolley 31. The servo motor 36 is set on the moving trolley 31 to drive its movement. The X-ray machine tube 6 is placed on the moving trolley 31.

[0068] The input end of the servo motor 36 of the transmission mechanism 3 is connected to the output end of the servo driver, and the input end of the servo driver is connected to Q0.0 and Q0.2 of the digital output interface Q of PLC2, which is used by PLC2 to control the movement of the motor and the direction of the trolley movement.

[0069] The output terminal of the limit switch on the transmission mechanism 3 is connected to I0.4 of the digital input interface I of PLC2. When the limit switch of the transmission mechanism 3 is triggered, it outputs a signal to I0.4 of the digital input interface I of PLC2, allowing the system to work.

[0070] The PLC2 includes a system power on / off button S1 and an exposure start switch S2;

[0071] The power supply for PLC2 is DC24V; the power on / off button S1 is a single button used to control the start or stop of the power supply.

[0072] The exposure switch S2 is used as the system's exposure start button.

[0073] Furthermore, such as Figure 2 The specific operating steps of the detection method for X-ray machine tubes are as follows:

[0074] Step 1: Set the X-ray tube position parameters on the PC HMI, move the X-ray tube placed on the transmission mechanism moving trolley to the lead box for detecting parameters, close the limit switch, and allow the system to run after the PLC detects that the X-ray tube has reached the position;

[0075] Step 2: Set the voltage, current and time parameters for X-ray tube detection on the PC HMI. Click the ready button on the PC HMI. After the PLC receives the ready signal, it starts the filament circuit board to output voltage and light up the X-ray tube filament.

[0076] Step 3: After the PLC detects the normal start signal of the X-ray machine tube filament circuit parameters, it sends an OK signal to the PC, allowing the system to run; if the PLC does not detect the normal start signal of the filament circuit parameters, it does not allow the system to run and issues an alarm signal.

[0077] Step 4: After the PC receives the ready OK signal from the PLC, the OK signal indicator on the PC HMI changes from red to green.

[0078] Step 5: Press the start exposure switch S2. The PLC sends a start signal and controls the high-frequency high-voltage device to start working. It outputs high-frequency high voltage to the transformer and voltage multiplier circuit in the X-ray machine tube source assembly to raise it to the set value. The voltage is then adjusted to DC 0-5V by the feedback circuit and output to the high-frequency high-voltage device and PLC for closed-loop control and data acquisition. After receiving the feedback data, the PLC processes and calculates the data and displays and saves the data on the PC HMI.

[0079] Step 6: During the detection process, the temperature sensor PT100 detects the temperature change of the X-ray tube and outputs it to the RTD module of the PLC for data processing. The temperature of the X-ray tube is displayed on the PC HMI. When the temperature of the X-ray tube exceeds the set value according to the signal received by the temperature sensor, the PLC digital output interface Q starts the cooling fan on the X-ray tube (6). When the temperature is lower than the set value, the PLC digital output interface Q shuts down the cooling fan on the X-ray tube.

[0080] Step 7: After the test is completed, the test results are automatically saved on the PC HMI; the PC sends a signal to the PLC to move the X-ray tube placed on the moving trolley of the transmission mechanism to its original position.

[0081] Working circuit principle as follows Figure 2 When the power on / off button S1 in the circuit is pressed once, the system is powered on. When the motion button is clicked on the HMI of the PC1, the digital output interfaces Q0.0 and Q0.2 of the PLC2 control the servo driver to work, the motor on the moving trolley of the transmission mechanism 3 starts to move, and moves the X-ray tube 6 placed on the moving trolley into the detection environment. After reaching the designated position, the limit switch K1 closes. After the PLC digital input terminal I0.4 receives the signal of K1 closing, the system is allowed to work.

[0082] On the HMI of PC1, the voltage, current, and time parameters are set. The ready button is pressed on the HMI. After receiving the ready signal, PLC2 outputs a high level through digital output interface Q0.1 to start the filament circuit board 5. The filament circuit board 5 outputs a 1kHz square wave voltage to light the filament inside the X-ray tube 6. After PLC2 detects that the filament in the X-ray tube 6 is lit normally, it sends a signal to PC1 to allow the system to run. If the filament of the X-ray tube 6 or the filament circuit board 5 is faulty or fails to start properly, an alarm signal on the filament circuit board 5 is fed back to the digital input interface I0.2 of PLC2. The PLC central processing unit then issues an alarm signal and stops the system.

[0083] After receiving the preparatory normal signal from PLC2, the signal indicator light on PC1HMI changes from red to green. Pressing the start exposure switch S2 triggers a start signal from PLC2. PLC2's digital output interfaces Q0.6 and Q0.7 output signals to control the high-frequency high-voltage device 4 to start working. PLC2's analog output module AQ outputs DC voltage to the high-frequency high-voltage device 4. The high-frequency high-voltage device 4 adjusts its output based on the DC voltage output from the PLC2 analog output module, supplying high-frequency high voltage to the X-ray source assembly in the X-ray tube 6. This controls the transformer and voltage multiplier circuit in the source assembly to raise the voltage to the set value, generating X-rays. Simultaneously, the feedback circuit in the X-ray source assembly outputs feedback voltage and current to feedback circuit 7. Feedback circuit 7 adjusts the feedback voltage and current to a DC 0-5V voltage, outputting it to the high-frequency high-voltage device 4 and the PLC2 analog input module for closed-loop control and data acquisition. The central processing unit in PLC2 processes and calculates the data, then displays and saves the data on PC1HMI.

[0084] If, during the detection process, PLC2 detects abnormal feedback data from X-ray tube 6, it displays the abnormal data on PC1 HMI and issues an alarm signal. PLC2's digital output interfaces Q0.6 and Q0.7 output signals to stop the high-voltage output of high-frequency high-voltage device 4. The abnormal data report can be viewed or printed on PC1 HMI to analyze the cause of the abnormal X-ray tube 6 parameter detection.

[0085] During the detection process, the temperature sensor 8 installed on the outer shell of the X-ray tube 6 outputs the measured temperature change to the RTD module of PLC2 for data processing, and displays the measured real-time temperature on the PC 1HMI; when the temperature of the X-ray tube exceeds the set value according to the signal received by the temperature sensor, the PLC digital output interface Q starts the cooling fan on the X-ray tube (6), and when the temperature is lower than the set value, the PLC digital output interface Q shuts down the cooling fan on the X-ray tube; if the temperature of the X-ray tube 6 exceeds the set upper limit during the detection process, PLC2 issues an alarm signal and stops the high-frequency high-voltage device 4 from working.

[0086] After the test is completed, the test data is automatically saved in report format on PC1HMI and the results are displayed to show whether the data results meet the parameter requirements of the X-ray tube. When the motion button is clicked on PC1HMI, PC1 sends a signal, and the digital output interfaces Q0.0 and Q0.2 of PLC2 control the servo driver to move the X-ray tube 6 placed on the moving carriage of the transmission mechanism 3 to its original position.

[0087] To test the parameters of the X-ray tube of a mobile C-arm X-ray machine and ensure they meet the loading factor and control requirements in medical device standards, a newly invented X-ray tube testing device is used. The parameter testing process employs closed-loop system control technology, which can monitor and manage the production status and test results of the X-ray tube in real time. The parameter measurement results are stable and reliable, and the test data can be automatically saved, making the data records traceable. The testing device is safe, reliable, and easy to operate.

[0088] In its specific implementation, this application provides a computer storage medium and a corresponding data processing unit. The computer storage medium is capable of storing a computer program, which, when executed by the data processing unit, can run the invention's description of a detection device and method for detecting X-ray machine tubes, as well as some or all of the steps in various embodiments. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0089] Those skilled in the art will clearly understand that the technical solutions in the embodiments of the present invention can be implemented using computer programs and their corresponding general-purpose hardware platforms. Based on this understanding, the technical solutions in the embodiments of the present invention, or the parts that contribute to the prior art, can be embodied in the form of computer programs, i.e., software products. These computer program software products can be stored in a storage medium and include several instructions to cause a device containing a data processing unit (which may be a personal computer, server, microcontroller, MUU, or network device, etc.) to execute the methods described in various embodiments or certain parts of the embodiments of the present invention.

[0090] This invention provides a detection device and method for detecting X-ray machine tubes. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A detection device for detecting X-ray machine tubes, characterized in that, include: PC (1) is used for human-machine interaction and control of the detection device. PC (1) is connected to programmable logic controller (PLC) (2) and communicates with it. PLC (2) is connected to high-frequency high-voltage device (4), transmission mechanism (3), filament circuit board (5) and feedback circuit board (7) to receive its signals and control its operation. It also includes a temperature sensor (8) for measuring the temperature of the X-ray tube (6), which is connected to a programmable logic controller (PLC) (2), and the programmable logic controller (PLC) (2) is also used to control the temperature of the X-ray tube (6); The high-frequency high-voltage device (4) is connected to the X-ray tube (6) to be tested, and provides high-frequency high voltage to the X-ray source assembly in the X-ray tube (6) to generate X-rays; The transmission mechanism (3) is used to place the X-ray tube (6) to be inspected and transport it to the inspection environment; The filament circuit board (5) is connected to the X-ray tube (6) to be tested and is used to light up the filament in the X-ray tube (6); The specific method for using the aforementioned detection device to detect the X-ray machine tube (6) to be tested is as follows: Step 1: Set the position parameters of the X-ray tube (6) to be tested on the PC (1), move the X-ray tube (6) placed on the transmission mechanism (3) to the testing environment, and allow the subsequent testing process to run after the programmable logic controller (PLC) (2) determines that the X-ray tube (6) has moved to the target position according to the feedback signal returned by the transmission mechanism (3). Step 2: Set the detection parameters of the X-ray tube (6) on the PC (1), send a preparatory signal on the PC (1), and after the programmable logic controller (PLC) (2) receives the preparatory signal, start the output voltage of the filament circuit board (5) to light up the filament in the X-ray tube (6); Step 3: The programmable logic controller (PLC) (2) sends an allow operation signal to the PC (1) after the filament of the X-ray machine tube (6) is lit according to the feedback signal; otherwise, it sends an disallow operation signal and issues an alarm signal. Step 4: After receiving the start signal from the programmable logic controller (PLC) (2), the PC (1) displays the signal. Step 5: Control the programmable logic controller (PLC) (2) to send a start signal, control the high-frequency high-voltage device (4) to output high-frequency high-voltage power to the X-ray tube (6) of the X-ray machine, and convert it into a low-voltage signal through the feedback circuit board (7) and output it to the high-frequency high-voltage device (4) and the programmable logic controller (PLC) (2) for closed-loop control and data acquisition. The programmable logic controller (PLC) (2) receives the feedback voltage data sent by the feedback circuit board (7), and displays and saves the data on the PC (1) after data processing. Step 6: During the above detection process, the temperature sensor (8) outputs the temperature and its change of the X-ray tube (6) to the programmable logic controller (PLC) (2) for data processing, and sends it to the PC (1) to save and display the temperature of the X-ray tube (6). When the programmable logic controller (PLC) (2) determines that the temperature of the X-ray tube (6) exceeds the set value based on the signal received by the temperature sensor (8), the output interface Q of the programmable logic controller (PLC) (2) starts the heat dissipation device on the X-ray tube (6) to dissipate heat from the X-ray tube (6). When the temperature is lower than the set value, the output interface Q of the programmable logic controller (PLC) (2) shuts off the operation of the heat dissipation device on the X-ray tube (6). Step 7: After the detection is completed, save all data on the PC (1) and perform analysis; the PC (1) sends a signal to the programmable logic controller (PLC) (2) to move the X-ray tube (6) placed on the transmission mechanism (3) to its original position to complete the detection.

2. The detection device for detecting X-ray machine tubes according to claim 1, characterized in that, The programmable logic controller (PLC) (2) includes at least: an Ethernet port, a digital input interface I, a digital output interface Q, an analog input module AI, an analog output module AQ, and an RTD module.

3. The detection device for detecting X-ray machine tubes according to claim 2, characterized in that, The Ethernet port of the programmable logic controller (PLC) (2) is connected to the Ethernet port of the PC (1) via a network cable.

4. The detection device for detecting X-ray machine tubes according to claim 2, characterized in that, The high-frequency high-voltage device (4) includes at least four input terminals and two output terminals, wherein: The first input terminal of the high-frequency high-voltage device (4) is connected to the output terminal of the analog output module AQ of the programmable logic controller PLC (2) for adjusting the high-frequency high-voltage output of the high-frequency high-voltage device (4); The second and third input terminals of the high-frequency high-voltage device (4) are connected to the digital output interface Q of the programmable logic controller (PLC) (2) to control the start and stop of the high-frequency high-voltage device (4); The fourth input terminal of the high-frequency high-voltage device (4) is connected to the output terminal of the feedback circuit board (7) to receive the voltage feedback signal output by the feedback circuit board (7); The first output terminal of the high-frequency high-voltage device (4) is connected to the digital input interface I of the programmable logic controller PLC (2) to monitor its output current and voltage and to issue an alarm. The second output end of the high-frequency high-voltage device (4) is connected to the input end of the X-ray machine tube (6) to be tested, and is used to provide high-frequency high voltage to the X-ray machine tube (6) to generate X-rays.

5. A detection device for detecting X-ray machine tubes according to claim 2, characterized in that, The filament circuit board (5) includes at least two input terminals and two output terminals, wherein: The first input terminal of the filament circuit board (5) is connected to the digital output interface Q of the programmable logic controller (PLC) (2) to control the start or stop of the filament circuit board (5); The second input terminal of the filament circuit board (5) is connected to the analog output AQ interface of the programmable logic controller PLC (2) to adjust the output current of the filament circuit board (5); The first output terminal of the filament circuit board (5) is connected to the digital input interface I of the programmable logic controller PLC (2) for fault alarm of the filament circuit board (5); The second output terminal of the filament circuit board (5) is connected to the input terminal of the X-ray tube (6) to be tested, and is used to light up the filament.

6. A detection device for detecting X-ray machine tubes according to claim 2, characterized in that, The input terminal of the feedback circuit board (7) is connected to the output terminal of the X-ray tube (6) to be tested, and outputs the feedback voltage and current of the X-ray source component in the X-ray tube (6) to the feedback circuit board (7). The feedback circuit board (7) converts the above feedback voltage and current into a DC 0-5V voltage signal and outputs it to the analog input module AI of the high-frequency high voltage device (4) and the programmable logic controller PLC (2).

7. A detection device for detecting X-ray machine tubes according to claim 2, characterized in that, The transmission mechanism (3) includes: a platform (34) that carries the entire transmission mechanism (3), a guide rail (35) fixed on the platform (34), a moving trolley (31) sliding along the guide rail (35), a limit switch (33) set at the front end of the moving trolley (31), a servo motor (36) set on the moving trolley (31) for driving its movement, and the X-ray tube (6) to be tested placed on the moving trolley (31). The limit switch (33) is connected to the digital input interface I of the programmable logic controller (PLC) (2) to send trigger signals. The servo driver in the servo motor (36) is connected to the digital output interface Q of the programmable logic controller (PLC) (2) to receive control signals.

8. A detection device for detecting X-ray machine tubes according to claim 2, characterized in that, The temperature sensor (8) is installed in the housing of the X-ray tube (6) to be tested, and its output is connected to the RTD module of the programmable logic controller (PLC) (2) to transmit temperature signals. The X-ray tube (6) of the X-ray machine is provided with a heat dissipation device. The control terminal of the heat dissipation device is connected to the digital output interface Q of the programmable logic controller (PLC) (2) to control the start and stop of the heat dissipation device and control the temperature of the X-ray tube (6) within the set range.

9. A detection device for detecting X-ray machine tubes according to claim 4, characterized in that, The high-frequency high-voltage device (4) rectifies the AC 220V power supply to generate a DC 300V voltage, and then inverts it to generate a high-frequency high voltage of not less than 50kHz, which is output through its second output terminal.

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