High-frequency power calibration system and calibration method for in-vitro high-frequency thermal therapy machine

Abstract

The high-frequency power calibration system comprises an illuminometer module, a voltage regulator module, a standard load module, a high-frequency source placement frame, a high-frequency current acquisition module, a control system and a computer, and all the modules are connected through signals to form the complete calibration system. The calibration method comprises the steps of load impedance standard power data acquisition, high-frequency power data acquisition, high-frequency power precision verification and high-frequency source module numbering and calibration data configuration. According to load impedance standard power data acquisition, different power frequency voltages are set, power frequency power and illuminometer data are acquired, and a relation function between the power frequency power and the illuminometer data is established; in high-frequency power data acquisition, different DA voltages are set, illuminometer data are acquired, and a relation function is established; the high-frequency power precision verification verifies the power precision by fitting the function relationship; and finally, the calibration data and the high-frequency source module number are correspondingly stored. The problem that the power calibration precision of the in-vitro high-frequency thermal therapy machine is insufficient is solved.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and in particular to a high-frequency power calibration system and a calibration method for an extracorporeal high-frequency thermal therapy machine. Background Art

[0002] With the continuous advancement of medical technology, high-frequency hyperthermia, as an important physical therapy method, has gained widespread clinical application. Extracorporeal high-frequency hyperthermia devices generate high-frequency electromagnetic waves, which heat tissues and achieve therapeutic effects. During high-frequency hyperthermia therapy, precise control of output power plays a crucial role in the treatment outcome, making accurate power calibration of high-frequency hyperthermia devices particularly important.

[0003] Currently, power calibration of high-frequency thermal therapy equipment is primarily achieved by measuring the relationship between output power and set power. CN114047379A discloses an impedance power calibration device and method, which includes a radio frequency source, a controller, a computer, an interactive module, a standard impedance module, and a high-frequency electrosurgery tester. The device uses the standard impedance module and the high-frequency electrosurgery tester to collect the radio frequency power output by the radio frequency source and calculate a power relationship function. CN216956171U also discloses a similar impedance power calibration device, which uses a standard impedance module and a high-frequency electrosurgery tester to collect the radio frequency power output by the radio frequency source used in a radio frequency therapy device and calculate a power relationship function, thereby ensuring that the output power set on the computer is close to the actual power ultimately applied to the treatment site.

[0004] Regarding output power detection for medical shortwave therapy devices, CN111707866A discloses a device for detecting the output power of a medical shortwave therapy device. The device comprises a light energy conversion component electrically connected to an electrode sheet to convert the output power of the shortwave therapy device into light energy, and an illuminance detection component for measuring the illuminance of the light energy conversion component. The output power of the shortwave therapy device is measured and calibrated based on the detected illuminance and a preset correspondence between the illuminance value and the output power. CN212459837U also discloses a similar device for detecting the output power of a medical shortwave therapy device. The device converts the output power of the shortwave therapy device into light energy by connecting the light energy conversion component to the electrode sheet, measures the illuminance of the light energy conversion component by the illuminance detection component, and calibrates the output power of the shortwave therapy device based on the preset correspondence between the detected illuminance, the illuminance value, and the output power.

[0005] In addition, CN116256685A discloses a high-frequency electrosurgical analyzer calibration device and calibration method. The device can achieve a theoretical high-frequency power of more than 1000W and a current of more than 5A at different impedances (10Ω to 5000Ω) at a frequency of 50kHz to 5MHz through an impedance converter, and can adjust the output power in real time through a computer.

[0006] However, existing in vitro high-frequency hyperthermia machines still have obvious deficiencies in power output accuracy. The power output accuracy of high-frequency hyperthermia equipment currently on the market is generally poor, generally only reaching an accuracy range of ±20%, which leads to poor consistency in treatment during high-frequency hyperthermia. Due to insufficient power control accuracy, it is difficult to accurately control the hyperthermia dose during actual treatment, affecting the predictability and repeatability of the treatment effect. In addition, existing calibration systems are often complex in structure and cumbersome in operation, making it difficult to achieve fast and accurate power calibration. At the same time, the existing technology lacks a method for systematically calibrating the relationship between the industrial frequency power supply and the high-frequency power output, and cannot effectively solve the problem of power output stability of high-frequency hyperthermia machines under different working conditions.

[0007] Therefore, there is an urgent need for a calibration system that can improve the power output accuracy of an extracorporeal high-frequency hyperthermia machine to solve the problem of poor power control accuracy in the existing technology and improve the therapeutic effect and safety of high-frequency hyperthermia. Summary of the Invention

[0008] In order to solve the technical problem that the power output accuracy of existing equipment during heat therapy is poor and can only reach ±20%, resulting in poor consistency during high-frequency heat therapy, the high-frequency power output control accuracy is improved from the original ±20% to ±5%, and the technical effect of ensuring consistency during high-frequency treatment is achieved, the present invention provides a high-frequency power calibration system for an extracorporeal high-frequency heat therapy machine.

[0009] The object of the present invention is achieved through the following technical solutions: A high-frequency power calibration system for an extracorporeal high-frequency hyperthermia machine, comprising an illuminance meter module, a voltage regulator module, a standard load module, a high-frequency source placement rack, a high-frequency current acquisition module, a control system and a computer, wherein the high-frequency source placement rack is provided with a high-frequency source module and is electrically connected thereto, the connection end of the high-frequency current acquisition module is connected to the high-frequency source module, the control end of the high-frequency current acquisition module is signal-connected to the control system, the control system is provided with a control part, the control part is connected to the interface of the RF source placement rack and the illuminance meter module, the connection end of the voltage regulator module is signal-connected to the control system, the other connection end of the voltage regulator module is connected to the standard load module, the standard load module is connected to another interface of the high-frequency source placement rack, the output end of the standard load module is signal-connected to the illuminance meter module, and the connection end of the computer is signal-connected to the control system.

[0010] Preferably, the system is further provided with a display module, and the display module is connected to the computer signal.

[0011] Preferably, the voltage regulator module is connected to the control system via serial communication; the illuminometer module is connected to the extracorporeal high-frequency thermal therapy machine signal.

[0012] Preferably, the voltage regulator module is provided with a 50Hz power supply voltage and a 50Hz power supply current detection device, and uploads the real-time 50Hz power supply voltage and 50Hz power supply current data values ​​to the control system via serial communication.

[0013] Preferably, the high-frequency source module is provided with a power supply interface, a DA control interface, an I / O start-stop interface and a high-frequency current acquisition interface. The DA control interface and the I / O start-stop interface are connected to the control system, the high-frequency current acquisition interface is connected to the high-frequency current acquisition module, and the power supply interface is connected to the external power input terminal.

[0014] The present invention also provides a calibration method using a high-frequency power calibration system of an in vitro high-frequency hyperthermia machine, comprising the following steps: S1, load impedance standard power data collection; S2, high-frequency power data acquisition; S3, high frequency power accuracy calibration; S4, high frequency source module number and calibration data configuration.

[0015] Preferably, the load impedance standard power data collection includes the following steps: S11. The computer sends a load impedance standard power data acquisition command to the control system. The control system simulates the signal output DA voltage to set the voltage of the voltage regulator module (power frequency voltage). (The initial test voltage is 0V, and the cycle setting is 0V as the minimum value and 1V step to the maximum value of 220V). S12. The computer sends a power frequency power acquisition command to the control system. The control system starts the voltage regulator module through I / O start and stop. The control system collects the voltage values ​​of the power frequency voltage and power frequency current (converted to voltage value acquisition) in real time through serial communication, and calculates the power P through the power frequency voltage and power frequency circuit. 工 .

[0016] S13, the computer sends the illuminance meter data acquisition command to the control system, the control system starts the illuminance meter through serial communication, the control system uses the serial communication to collect the real-time illuminance meter data, and the power frequency generates the illuminance meter data with L 工 replace.

[0017] S14, the computer sends S11, S12 and S13 commands to the control system in a loop until the test is completed. The maximum 220V power frequency voltage data of the standard impedance and the illuminance meter data L 工 With power P 工 The illuminance meter data L is fitted by the least squares method 工 With power P 工 The relationship function L 工 =f(P 工).

[0018] Preferably, the high-frequency power data acquisition includes the following steps: S21. The computer sends a load impedance high-frequency power data acquisition command to the control system. The control system analog signal output DA voltage (represented by the symbol V) is set to 0.1V-10V (the initial DA output is 0.1V, and the cyclic setting is 0.1V as the minimum value and steps 0.1V up to a maximum of 10V). S22, the computer sends the illuminance meter data acquisition command to the control system, the control system starts the illuminance meter through serial communication, the control system uses the serial communication to collect the real-time illuminance meter data, and the high-frequency power generates the illuminance meter data with L 高 replace.

[0019] S23, the computer sends S21 and S22 commands to the control system in a loop until the test is completed and the output DA voltage is a maximum of 10V. The analog signal output DA voltage V is consistent with the illuminance meter data L. 高 The DA voltage V and the illuminance meter data L are fitted by the least squares method. 高 The relationship function V=f(L 高 ).

[0020] Preferably, the high-frequency power accuracy check includes the following steps: S31, DA voltage V and high frequency power linear fitting: the illuminance meter data L is fitted by the least squares method 工 With power P 工 The relationship function L 工 =f(P 工 ) and the least squares method to fit the DA voltage V and the illuminance meter data L 高 The relationship function V=f(L 高 ), the functional relationship is V=f(P 工 )V=f(P 高 ).

[0021] S32. Power accuracy test and calibration: Set the output power to 50W-1000W in 10W steps through computer control commands. Send DA signal commands after software fitting. Compare the test power of the feedback illuminance meter with the set power. If the deviation between the actual power data and the set power data is within 10W, it is qualified. Otherwise, it is considered unqualified and returned for recalibration.

[0022] Preferably, the high-frequency source module numbering and calibration data configuration includes the following steps: S41. High-frequency source module numbering: manage the high-frequency source module numbering according to production requirements.

[0023] S42, calibration data configuration: the calibration completed relationship function V = f (P高 ) is matched with the corresponding RF source module number and saved to the data server.

[0024] The beneficial effects of the present invention are as follows: the present invention realizes precise control of high-frequency power output by adopting a high-frequency power calibration device composed of an illuminance meter module, a voltage regulator module, a standard load module, a high-frequency source placement rack, a high-frequency current acquisition module, a control system, etc., combined with calibration methods such as load impedance standard power data acquisition, high-frequency power data acquisition, high-frequency power accuracy verification, and high-frequency source module numbering and calibration data configuration, thereby increasing the high-frequency power output control accuracy from the original ±20% to ±5%, greatly improving the consistency during high-frequency hyperthermia, ensuring the stability and reliability of the treatment effect, and providing patients with a safer and more effective hyperthermia experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the high-frequency power calibration system of the present invention; Figure 2 It is a control flow chart of the high-frequency power calibration system of the present invention.

[0026] The accompanying drawings are marked as follows: 1-high-frequency source placement rack, 2-high-frequency current acquisition module, 3-control system, 4-standard load module, 5-voltage regulator module, 6-illuminance meter module, 7-computer, 8-display module. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of those skilled in the art, the following embodiments and accompanying drawings are provided. Figure 1-2 The present invention is further described, and the contents mentioned in the embodiment are not intended to limit the present invention. Example 1

[0028] See Figure 1 A high-frequency power calibration system for an extracorporeal high-frequency hyperthermia machine includes an illuminometer module 6, a voltage regulator module 5, a standard load module 4, a high-frequency source placement rack 1, a high-frequency current acquisition module 2, a control system 3 and a computer 7; the high-frequency source placement rack 1 is provided with a high-frequency source module and is electrically connected to the high-frequency source module, the connection end of the high-frequency current acquisition module 2 is connected to the high-frequency source module, the control end of the high-frequency current acquisition module 2 is signal-connected to the control system 3, the control system 3 is provided with a control part, the control part is connected to the interface of the radio frequency source placement rack and the illuminometer module 6, the connection end of the voltage regulator module 5 is signal-connected to the control system 3, the other connection end of the voltage regulator module 5 is connected to the standard load module 4, the standard load module 4 is connected to another interface of the high-frequency source placement rack 1, the output end of the standard load module 4 is signal-connected to the illuminometer module 6, and the connection end of the computer 7 is signal-connected to the control system 3.

[0029] The high-frequency power calibration system for an extracorporeal high-frequency hyperthermia device further includes a display module 8, which is signal-connected to the computer 7. The display module 8 is configured to display various parameter data during the calibration process in real time, including but not limited to power frequency voltage, power frequency current, high-frequency power, and illuminance meter readings, thereby facilitating operator monitoring of the calibration process.

[0030] The voltage regulator module 5 is connected to the control system 3 via serial communication. The illuminometer module 6 is connected to the external high-frequency hyperthermia device via signals. Serial communication uses the RS-232 or RS-485 protocol to ensure stable and reliable data transmission. A dedicated interface is used to ensure accurate signal transmission.

[0031] Voltage regulator module 5 is equipped with 50Hz power supply voltage and current detection devices, which upload real-time 50Hz power supply voltage and current data to control system 3 via serial communication. The power supply voltage detection range is 0-250V with an accuracy of ±0.5%; the power supply current detection range is 0-10A with an accuracy of ±0.5%. The detection devices use high-precision voltage and current transformers to ensure the accuracy of the measured data.

[0032] The high-frequency source module is equipped with a power supply interface, a DA control interface, an I / O start-stop interface, and a high-frequency current acquisition interface. The DA control interface and the I / O start-stop interface are connected to the control system 3, the high-frequency current acquisition interface is connected to the high-frequency current acquisition module 2, and the power supply interface is connected to the external power input terminal. The power supply interface adopts a standard three-phase five-wire interface with a rated voltage of 380V±10% and a rated frequency of 50Hz±0.5Hz. The DA control interface adopts a standard analog input interface with a voltage range of 0-10V and a resolution of 12 bits. The I / O start-stop interface adopts an optoelectronic isolation input and output interface with an isolation voltage of 2500V. The high-frequency current acquisition interface adopts a dedicated high-frequency sampling interface with a sampling frequency of not less than 10MHz to ensure accurate acquisition of high-frequency signals.

[0033] Illuminance meter module 6 uses a high-precision photoelectric sensor with a measurement range of 0-100,000 lux, an accuracy of ±1%, and a response time of less than 10ms. It connects to standard load module 4 via a dedicated interface and collects the light intensity data generated by standard load module 4 in real time.

[0034] Standard load module 4 uses a standard impedance load of 50Ω±0.1Ω, a maximum power handling capacity of 2000W, and an operating frequency range of 10kHz-30MHz. Standard load module 4 has a built-in temperature sensor to monitor the load temperature and prevent overheating damage.

[0035] High-frequency current acquisition module 2 utilizes a high-precision current transformer and a high-speed analog-to-digital converter. Its sampling frequency is no less than 50MHz, its resolution is 16-bit, its measurement range is 0-20A, and its accuracy is ±0.5%. High-frequency current acquisition module 2 connects to the high-frequency source module via a dedicated interface, collecting high-frequency current data output by the module in real time.

[0036] Control System 3 utilizes a high-performance embedded processor with a main frequency of no less than 1 GHz, a memory of no less than 1 GB, and a storage capacity of no less than 32 GB. Control System 3 features multiple analog input and output interfaces, digital input and output interfaces, and communication interfaces for connecting various functional modules. Control System 3 runs a real-time operating system to ensure real-time performance and stability.

[0037] Computer 7 is an industrial-grade computer with a processor clock speed of no less than 2.5 GHz, memory of no less than 8 GB, and a hard drive capacity of no less than 500 GB. Computer 7 is installed with specialized calibration software to control the entire calibration process, process collected data, and generate calibration reports. Computer 7 is connected to control system 3 via an Ethernet or USB interface, with a communication rate of no less than 100 Mbps.

[0038] In actual application, the working process of the high-frequency power calibration system of the extracorporeal high-frequency hyperthermia machine is as follows: First, the high-frequency source module to be calibrated is placed on the high-frequency source placement rack 1 and electrically connected to the high-frequency source placement rack 1 through an interface. The high-frequency source placement rack 1 is connected to the control system 3 through a dedicated interface. The control system 3 controls the output power and start / stop status of the high-frequency source module through the DA control interface and the I / O start / stop interface.

[0039] Control system 3 then controls voltage regulator module 5 via serial communication to adjust the power supply voltage, providing power supply of varying power levels to standard load module 4. Voltage regulator module 5 uses built-in 50Hz power supply voltage and current detection devices to collect real-time power supply voltage and current data, and uploads this data to control system 3 via serial communication.

[0040] Next, standard load module 4 generates heat under the action of the industrial power supply. This heat is transferred to illuminance meter module 6 through radiation, convection, and other methods. Illuminance meter module 6 collects light intensity data in real time and transmits it to control system 3 via a dedicated interface. Based on the industrial power supply voltage and current data and the illuminance meter data, control system 3 establishes a relationship function between industrial power and illuminance meter readings.

[0041] Control system 3 then controls the high-frequency source module to output high-frequency signals of varying power levels through a DA control interface. These signals are then transmitted to standard load module 4 via an interface on the high-frequency source rack 1. The high-frequency signals generate heat in response to these signals, which is then transferred to illuminometer module 6 through radiation, convection, and other methods. The illuminometer module 6 collects real-time light intensity data and transmits it to control system 3 via a dedicated interface. Based on the DA control voltage and illuminometer data, control system 3 establishes a relationship function between the DA control voltage and the illuminometer reading.

[0042] Finally, control system 3 establishes a relationship function between the DA control voltage and the high-frequency power based on the relationship function between the power frequency power and the illuminance meter reading, and the relationship function between the DA control voltage and the illuminance meter reading. This relationship function serves as the calibration function for the high-frequency source module and is used to calculate the required DA control voltage based on the set high-frequency power in actual applications.

[0043] The entire calibration process is controlled by computer 7, which sends commands to control system 3 through dedicated calibration software. Control system 3 performs the corresponding operations and uploads the collected data to computer 7. Computer 7 processes the data, generates a calibration report, and saves the calibration function and the high-frequency source module number to the data server for subsequent use. Example 2

[0044] See Figure 2 A calibration method using a high-frequency power calibration system of an extracorporeal high-frequency hyperthermia device comprises the following steps: S1, load impedance standard power data collection; S2, high-frequency power data acquisition; S3, high frequency power accuracy calibration; S4, high frequency source module number and calibration data configuration.

[0045] The data collection of S1 and load impedance standard power includes the following steps: S11. The computer 7 sends a load impedance standard power data acquisition command to the control system 3. The control system 3 outputs the analog signal DA voltage to set the voltage (power frequency voltage) of the voltage regulator module 5. (The initial test voltage is 0V, and the cycle setting is 0V as the minimum value and 1V step to the maximum value of 220V). S12, the computer 7 sends a power frequency power acquisition command to the control system 3, and the control system 3 starts the voltage regulator module 5 through the I / O start and stop. The control system 3 collects the voltage values ​​of the power frequency voltage and power frequency current (converted into voltage value acquisition) in real time through serial communication, and calculates the power P through the power frequency voltage and power frequency circuit. 工 .

[0046] S13, the computer 7 sends a data acquisition command to the control system 3, the control system 3 starts the illuminance meter through the serial communication, the control system 3 uses the real-time illuminance meter data through the serial communication, and the power frequency generates the illuminance meter data with L 工 replace.

[0047] S14, the computer 7 sends S11, S12 and S13 commands to the control system 3 in a loop until the test is completed with the maximum 220V power frequency voltage data of the standard impedance and the illuminance meter data L 工 With power P 工 The illuminance meter data L is fitted by the least squares method 工 With power P 工 The relationship function L 工 =f(P 工 ).

[0048] During the load impedance standard power data acquisition process, the output voltage of the voltage regulator module 5 starts from 0V and increases in steps of 1V to a maximum of 220V. Each voltage point is maintained for 30 seconds to ensure that the system reaches a stable state. The sampling frequency of the power frequency voltage and power frequency current data collected by the control system 3 is 1kHz. 30 sets of data are collected at each voltage point, and the average value is taken to calculate the power P 工 The sampling frequency of the illuminance meter data is 10Hz, and 300 data points are collected at each voltage point, and the average value is taken as the illuminance meter data L at that voltage point. 工 .

[0049] S2. High-frequency power data acquisition includes the following steps: S21, the computer 7 sends a load impedance high-frequency power data acquisition command to the control system 3, and the analog signal output DA voltage (represented by the symbol V) of the control system 3 is set to 0.1V-10V (the initial DA output is 0.1V, and the cycle setting is 0.1V as the minimum value and steps by 0.1V to a maximum of 10V); S22, the computer 7 sends a data acquisition command to the control system 3, the control system 3 starts the illuminance meter through the serial communication, the control system 3 uses the serial communication to collect the data of the illuminance meter in real time, and the high frequency power generates the illuminance meter data with L 高 replace.

[0050] S23, the computer 7 sends S21 and S22 commands to the control system 3 in a loop until the test is completed and the output DA voltage is the maximum value of 10V. The analog signal output DA voltage V is consistent with the illuminance meter data L. 高 The DA voltage V and the illuminance meter data L are fitted by the least squares method. 高 The relationship function V=f(L 高 ).

[0051] During the high-frequency power data acquisition process, the DA voltage output by the control system 3 starts from 0.1V and increases in steps of 0.1V until it reaches a maximum of 10V. Each DA voltage point is maintained for 30 seconds to ensure that the system reaches a stable state. The illuminance meter data sampling frequency is 10Hz, and 300 data points are collected at each DA voltage point. The average value is taken as the illuminance meter data L at that DA voltage point. 高 .

[0052] S3, high frequency power accuracy calibration includes the following steps: S31, DA voltage V and high frequency power linear fitting: the illuminance meter data L is fitted by the least squares method 工 With power P 工 The relationship function L 工 =f(P 工 ) and the least squares method to fit the DA voltage V and the illuminance meter data L 高 The relationship function V=f(L 高 ), the functional relationship is V=f(P 工 )V=f(P 高 ).

[0053] S32. Power accuracy test and calibration: Set the output power to 50W-1000W in 10W steps through the computer 7 control command, send the DA signal command after software fitting, and compare the test power of the feedback illuminance meter with the set power. If the deviation between the actual power data and the set power data is within 10W, it is qualified. Otherwise, it is considered unqualified and returned for re-calibration.

[0054] During the high-frequency power accuracy calibration process, the control system 3 obtains the function relationship V=f(P 高 ) and calculate the DA voltage corresponding to different power points. The power point starts at 50W and increases in 10W steps to a maximum of 1000W. Each power point is maintained for 30 seconds to ensure the system reaches a stable state. The illuminance meter data sampling frequency is 10Hz, and 300 data points are collected at each power point. The average value is taken as the illuminance meter data for that power point. The actual power value is calculated using the relationship function between the illuminance meter data and power. This is compared with the set power value to calculate the deviation.

[0055] S4, high frequency source module numbering and calibration data configuration includes the following steps: S41. High-frequency source module numbering: manage the high-frequency source module numbering according to production requirements.

[0056] S42, calibration data configuration: the calibration completed relationship function V = f (P 高 ) is matched with the corresponding RF source module number and saved to the data server.

[0057] During the configuration of the high-frequency source module number and calibration data, the high-frequency source module number uses a unique identifier consisting of the production date, batch number, and serial number in the format of "YYYYMMDD-BBBB-NNNN", where YYYYMMDD represents the production date, BBBB represents the batch number, and NNNN represents the serial number. Calibration data configuration uses JSON format and includes information such as the high-frequency source module number, calibration date, calibrator, calibration equipment number, and calibration function parameters. Calibration data is stored in a dedicated database on the data server. The database uses a relational database and supports the SQL query language, facilitating subsequent query and management.

[0058] In practical application, the specific operation process of this calibration method is as follows: First, the high-frequency source module to be calibrated is mounted on the high-frequency source mounting rack 1 and all interfaces are connected. The computer 7 and the control system 3 are started and the calibration software is run.

[0059] Then, the load impedance standard power data collection step is executed. The computer 7 sends a command to the control system 3, and the control system 3 controls the voltage regulator module 5 to output power supply of different voltages and collect power frequency voltage, power frequency current and illuminance meter data. The computer 7 calculates the power frequency power P based on the collected data. 工 , and establish the illuminance meter data L 工 With power P 工 The relationship function L 工 =f(P 工 ).

[0060] Next, the high-frequency power data acquisition step is executed. The computer 7 sends a command to the control system 3, and the control system 3 controls the high-frequency source module to output high-frequency signals of different powers through the DA control interface and collects the illuminance meter data. The computer 7 establishes the DA voltage V and the illuminance meter data L according to the collected data. 高 The relationship function V=f(L 高 ).

[0061] Then, the high frequency power accuracy check step is performed. The computer 7 derives the relationship between the DA voltage V and the high frequency power P according to the relationship function established in the first two steps. 高 The relationship function V=f(P 高 ). The computer 7 sends a command to the control system 3, and the control system 3 uses the relationship function V=f(P 高 ) Calculate the DA voltage values ​​corresponding to different power points, control the high-frequency source module to output a high-frequency signal of the corresponding power, and collect illuminance meter data. Computer 7 calculates the actual power value based on the collected data, compares it with the set power value, and determines whether it is qualified.

[0062] Finally, the high frequency source module number and calibration data configuration steps are performed. The computer 7 assigns a unique number to the high frequency source module according to production requirements, and converts the calibration function V=f(P 高 ) is saved to the data server corresponding to the high-frequency source module number for subsequent use.

[0063] The entire calibration process is controlled by computer 7, and the operator only needs to follow the software prompts to complete the calibration. After the calibration is completed, computer 7 generates a calibration report containing information such as calibration results, calibration curve, error analysis, etc., which facilitates quality control and traceability management.

[0064] It should be noted that both the first embodiment and the second embodiment are a type of high-frequency power calibration system for an extracorporeal high-frequency hyperthermia machine.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A high-frequency power calibration system for an extracorporeal high-frequency hyperthermia device, characterized by: The system comprises an illuminometer module, a voltage regulator module, a standard load module, a high-frequency source placement rack, a high-frequency current acquisition module, a control system and a computer. The high-frequency source placement rack is provided with a high-frequency source module and is electrically connected thereto. The connection end of the high-frequency current acquisition module is connected to the high-frequency source module, and the high-frequency current acquisition module is signal-connected to the control system. The control system is provided with a control part, and the control part is connected to the interface of the RF source placement rack and the illuminometer module. The connection end of the voltage regulator module is signal-connected to the control system, the other connection end of the voltage regulator module is connected to the standard load module, the standard load module is connected to another interface of the high-frequency source placement rack, the output end of the standard load module is signal-connected to the illuminometer module, and the connection end of the computer is signal-connected to the control system.

2. The high-frequency power calibration system for an extracorporeal high-frequency hyperthermia device according to claim 1, characterized in that: The system is also provided with a display module, and the display module is connected to the computer signal.

3. The high-frequency power calibration system for an extracorporeal high-frequency hyperthermia device according to claim 1, characterized in that: The voltage regulator module is connected to the control system via serial communication; the illuminometer module is connected to the external high-frequency thermal therapy machine signal.

4. The high-frequency power calibration system for an extracorporeal high-frequency hyperthermia device according to claim 1, characterized in that: The voltage regulator module is provided with a 50Hz power supply voltage and a 50Hz power supply current detection device, and uploads the real-time 50Hz power supply voltage and 50Hz power supply current data values ​​to the control system through serial communication.

5. The high-frequency power calibration system for an extracorporeal high-frequency hyperthermia device according to claim 1, characterized in that: The high-frequency source module is provided with a power supply interface, a DA control interface, an I / O start-stop interface and a high-frequency current acquisition interface. The DA control interface and the I / O start-stop interface are connected to the control system, the high-frequency current acquisition interface is connected to the high-frequency current acquisition module, and the power supply interface is connected to the external power input terminal.

6. A calibration method using the high-frequency power calibration system for an extracorporeal high-frequency hyperthermia device according to any one of claims 1 to 5, characterized in that: The steps include: S1, load impedance standard power data collection; S2, high-frequency power data acquisition; S3, high frequency power accuracy calibration; S4, high frequency source module number and calibration data configuration.

7. The calibration method of the high-frequency power calibration system of the extracorporeal high-frequency hyperthermia device according to claim 6, characterized in that: The load impedance standard power data acquisition includes the following steps: S11, the computer sends a load impedance standard power data acquisition command to the control system, and the control system simulates the signal output DA voltage to set the voltage of the voltage regulator module; S12, the computer sends a power frequency power acquisition command to the control system, the control system starts the voltage regulator module through the I / O start and stop, the control system collects the power frequency voltage and power frequency current in real time through the serial communication, and calculates the power P through the power frequency voltage and power frequency circuit. 工； S13, the computer sends the illuminance meter data acquisition command to the control system, the control system starts the illuminance meter through serial communication, the control system uses the serial communication to collect the real-time illuminance meter data, and the power frequency generates the illuminance meter data with L 工 replace; S14, the computer sends S11, S12 and S13 commands to the control system in a loop until the test is completed. The maximum 220V power frequency voltage data of the standard impedance and the illuminance meter data L 工 With power P 工 The illuminance meter data L is fitted by the least squares method 工 With power P 工 The relationship function L 工 =f(P 工 ).

8. The calibration method of the high-frequency power calibration system of the extracorporeal high-frequency hyperthermia device according to claim 7, characterized in that: The high-frequency power data acquisition comprises the following steps: S21, the computer sends a load impedance high-frequency power data acquisition command to the control system, and the control system analog signal output DA voltage is set to 0.1V-10V; S22, the computer sends the illuminance meter data acquisition command to the control system, the control system starts the illuminance meter through serial communication, the control system uses the serial communication to collect the real-time illuminance meter data, and the high-frequency power generates the illuminance meter data with L 高 replace; S23, the computer sends S21 and S22 commands to the control system in a loop until the test is completed and the output DA voltage is a maximum of 10V. The analog signal output DA voltage V is consistent with the illuminance meter data L. 高 The DA voltage V and the illuminance meter data L are fitted by the least squares method. 高 The relationship function V=f(L 高 ).

9. The calibration method of the high-frequency power calibration system of the extracorporeal high-frequency hyperthermia device according to claim 8, characterized in that: The high-frequency power accuracy verification comprises the following steps: S31, DA voltage V and high frequency power linear fitting: the illuminance meter data L is fitted by the least squares method 工 With power P 工 The relationship function L 工 =f(P 工 ) and the least squares method to fit the DA voltage V and the illuminance meter data L 高 The relationship function V=f(L 高 ), the functional relationship is V=f(P 工 )V=f( P高 ); S32. Power accuracy test and calibration: Set the output power to 50W-1000W in 10W steps through computer control commands. Send DA signal commands after software fitting. Compare the test power of the feedback illuminance meter with the set power. If the deviation between the actual power data and the set power data is within 10W, it is qualified. Otherwise, it is considered unqualified and returned for recalibration.

10. The calibration method of the high-frequency power calibration system of the extracorporeal high-frequency hyperthermia device according to claim 9, characterized in that: The high frequency source module numbering and calibration data configuration includes the following steps: S41, high frequency source module numbering: manage the high frequency source module numbering according to production requirements; S42, calibration data configuration: the calibration completed relationship function V = f (P 高 ) is matched with the corresponding RF source module number and saved to the data server.

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