Measuring device of microwave therapeutic apparatus

Abstract

The utility model provides a measuring device for a microwave therapeutic instrument. The measuring device comprises a lower box body, wherein an accommodating space is formed in the lower box body; the upper box body is mounted on the lower box body in an openable manner and is suitable for mounting an industrial all-in-one machine; the measuring assembly is installed in the containing space, the measuring assembly comprises an attenuation unit, the attenuation unit comprises an attenuator and is installed on the bottom face of the box body, and the attenuator is suitable for attenuating a to-be-measured microwave signal of the to-be-measured microwave therapeutic apparatus to obtain an attenuated microwave signal; the power sensor and the attenuation unit are mounted on the bottom surface at an interval, and the power sensor is suitable for obtaining attenuation power of the attenuation microwave signal based on the attenuation microwave signal; the spectrum analyzer, the attenuation unit and the power sensor are mounted on the bottom surface at intervals, and the spectrum analyzer is suitable for obtaining a spectrogram of the attenuated microwave signal based on the attenuated microwave signal; wherein the industrial all-in-one machine obtains the power of the microwave signal to be measured according to the attenuation power, and obtains the frequency of the microwave signal to be measured according to the spectrogram.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave therapeutic instruments, in particular to a measuring device for microwave therapeutic instruments. Background Art

[0002] Microwave technology is increasingly being used clinically both domestically and internationally, demonstrating unique therapeutic benefits in eliminating various inflammatory conditions, alleviating pain, and promoting blood circulation. Microwave therapy devices are an application of microwave technology. Due to their radioactivity, the output power of microwave therapy devices must be adjusted according to the patient's needs. Excessively low power levels can affect treatment effectiveness, while excessive power can cause local tissue burns. Furthermore, to regulate the development of microwave therapy devices and prevent interference with other communication bands, 433MHz, 915MHz, and 2450MHz are designated as medical microwave frequencies. Therefore, the accuracy of a microwave therapy device's output power and frequency are key parameters for measuring its performance. Inaccurate output frequency, poor stability, and excessive harmonic frequencies can affect treatment effectiveness while also generating interference signals for the surrounding environment.

[0003] Therefore, timing detection of microwave therapeutic devices is particularly important. However, conventional methods for detecting microwave therapeutic devices often use different instruments to detect the frequency and power of the microwave therapeutic device, or use bulky instruments such as calorimetry to detect the microwave therapeutic device, resulting in problems such as long detection time and large size, which makes the device difficult to carry. Summary of the Invention

[0004] In view of this, the utility model provides a microwave therapeutic instrument measuring device, which can improve the detection efficiency of the microwave therapeutic instrument.

[0005] As one aspect of an embodiment of the present utility model, a microwave therapeutic instrument measuring device is provided, including a lower box body, which forms an accommodating space inside; an upper box body, which is installed on the lower box body in an openable and closable manner, and is suitable for installing an industrial all-in-one machine; and a measuring component, which is installed in the accommodating space, and the measuring component includes: an attenuation unit, including an attenuator, which is installed on the bottom surface of the box body, and the attenuator is suitable for attenuating a microwave signal to be measured of the microwave therapeutic instrument to be measured to obtain an attenuated microwave signal; a power sensor, which is installed on the bottom surface at intervals from the attenuation unit, and is suitable for obtaining the attenuated power of the attenuated microwave signal based on the attenuated microwave signal; and a spectrum analyzer, which is installed on the bottom surface at intervals from the attenuation unit and the power sensor, and is suitable for obtaining a spectrum diagram of the attenuated microwave signal based on the attenuated microwave signal; wherein the industrial all-in-one machine obtains the power of the microwave signal to be measured based on the attenuated power, and obtains the frequency of the microwave signal to be measured based on the spectrum diagram.

[0006] The microwave therapeutic device measuring device according to the embodiment of the present invention can measure the power and frequency of the microwave signal of the microwave therapeutic device by using an attenuator, a power sensor, and a spectrum analyzer, and can determine whether the microwave signal of the microwave therapeutic device is in the medical microwave frequency band. The industrial all-in-one machine realizes automatic data collection, processing, and recording, reduces manual operation, improves efficiency and accuracy. The measurement component is installed in the lower box, which is convenient for operation and management, reduces the errors caused by multiple connection and movement of components, facilitates maintenance and replacement, shortens the detection time, and improves detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0008] Figure 1 The schematic diagram of the principle of measuring microwave signal power by using calorimetry in the related art is shown schematically;

[0009] Figure 2 The schematic diagram shows a principle diagram of a microwave therapeutic apparatus measuring device according to an embodiment of the present utility model;

[0010] Figure 3 Schematically shows a three-dimensional diagram of a microwave therapeutic apparatus measuring device according to an embodiment of the present utility model;

[0011] Figure 4 A schematic first perspective view of the internal structure of a microwave therapeutic apparatus measuring device according to an embodiment of the present invention is shown;

[0012] Figure 5 A second perspective view schematically illustrates the internal structure of the microwave therapeutic apparatus measuring device according to an embodiment of the present invention;

[0013] Figure 6 A third perspective view schematically shows the internal structure of the microwave therapeutic apparatus measuring device according to an embodiment of the present utility model;

[0014] Figure 7 The following schematically shows the composition of a microwave therapeutic apparatus in the related art;

[0015] Figure 8 The following schematically shows a principle diagram of a thermocouple power sensor according to an embodiment of the present utility model;

[0016] Figure 9 The internal structure of the thermocouple power sensor according to the embodiment of the present utility model is schematically shown;

[0017] Figure 10The following schematically shows a principle diagram for measuring the signal power of a microwave signal to be measured according to an embodiment of the present utility model;

[0018] Figure 11 The following schematically shows a principle diagram for measuring the signal power of a microwave signal to be measured according to another embodiment of the present invention;

[0019] Figure 12 The schematic diagram of the spectrum analyzer according to the embodiment of the present utility model is shown;

[0020] Figure 13 The following schematically shows a working flow diagram of an industrial control all-in-one machine according to an embodiment of the present utility model;

[0021] Figure 14 A schematic diagram shows a frequency spectrum of a microwave therapeutic apparatus according to an embodiment of the present invention when the frequency output is normal; and

[0022] Figure 15 The diagram schematically shows a spectrum diagram of a microwave therapeutic apparatus according to an embodiment of the present invention when the frequency output is abnormal.

[0023] Description of reference numerals:

[0024] 1. Lower box; 11. Main body; 12. Cover; 13. Air inlet; 14. Air outlet; 15. Bump; 16. Support; 2. Upper box; 3. Measurement component; 31. Attenuation unit; 311. Attenuator; 312. Cooling module; 3121. Mounting part; 3122. Radiator; 3123. Inlet fan; 3124. Outlet fan; 313. Coupler; 32. Power sensor; 33. Spectrum analyzer; 4. Power supply component; 41. Socket; 42. Adapter; 43. Extension unit; 44. Switch; 5. Industrial all-in-one machine; 6. Input unit. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0026] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "comprise", "include", etc. used herein indicate the presence of the features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components.

[0027] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0028] Microwaves are high-frequency electromagnetic waves with frequencies ranging from 300MHz to 300GHz and wavelengths of 1mm to 1m. They possess strong penetration, robust anti-interference capabilities, and rapid propagation. Microwave technology is increasingly being used clinically both domestically and internationally, demonstrating unique therapeutic benefits in eliminating various inflammatory conditions, relieving pain, and promoting blood circulation, earning widespread recognition within the medical community. Microwave therapeutic devices utilize the excellent penetrating properties and dielectric heating effects of microwaves. A microwave signal transmitter generates a microwave signal of a specific frequency, which is then applied to the affected area to achieve heating, sterilization, and blood circulation acceleration, thereby achieving therapeutic and rehabilitation goals.

[0029] When microwaves act on body tissues, they cause high-frequency oscillations of ions, water molecules and dipoles in tissue cells. When the microwave amount is low, the heat generation is low, and local blood circulation is enhanced, local metabolism is accelerated, and local immunity is enhanced. Therefore, it can effectively improve local blood circulation, promote edema absorption, and reduce inflammation and relieve pain; when the microwave amount is high, the heat generation is high, which can cause protein denaturation, coagulation, and necrosis. At this time, microwaves have the effect of burning and cutting.

[0030] The treatment method of irradiating patients with microwaves is called microwave therapy. Since microwaves have certain radioactivity, the output power of a microwave therapeutic device must be adjusted according to the patient's treatment needs. Too low a power value will affect the treatment effect, and too high a power value will cause local tissue burns in the patient. In addition, in order to regulate the development of microwave therapeutic devices and avoid interference with other communication bands, my country stipulates that 433MHz, 915MHz and 2450MHz are three frequencies for medical microwaves. According to the attenuation characteristics of microwave propagation in human tissue, 433MHz and 915MHz microwaves have deeper tissue penetration capabilities than 2450MHz microwaves. However, due to registration costs and electromagnetic compatibility requirements, except for microwave hyperthermia, 2450MHz microwaves are currently basically used for treatment.

[0031] Therefore, the accuracy of a microwave therapy device's output power and frequency are key parameters for measuring its performance. If a microwave therapy device exhibits inaccurate output frequency, poor stability, or excessive harmonic frequencies, it will not only affect treatment effectiveness but also generate interference signals for the surrounding environment. Therefore, regular measurement and maintenance based on device usage are crucial for ensuring medical quality and preventing adverse events.

[0032] Microwave therapeutic devices are mainly used in clinical departments such as gynecology, orthopedics, pediatrics, and rehabilitation and physical therapy, as well as in operating rooms. In order to minimize patient waiting time, accurate and rapid microwave therapeutic device performance testing methods must be used for on-site testing to ensure that patients receive timely and effective treatment. Currently, the testing methods commonly used by testing agencies are usually: one instrument is used to test the power of the microwave therapeutic device, and another instrument is used to test the frequency of the microwave therapeutic device. There is a sequence in the use of the two instruments, or the microwave therapeutic device is tested using larger instruments such as calorimetry. As a result, the testing methods in related technologies have prominent problems such as high price, time-consuming testing, and large size that is not easy to carry. This brings many inconveniences to the maintenance and performance testing of microwave therapeutic devices during use.

[0033] In the field of microwave detection, microwave continuous wave power greater than 1W and less than 100W is generally referred to as microwave medium power, while microwave power greater than 100W is referred to as microwave high power. With the development of microwave power measurement technology and instrumentation, the scope of microwave medium power has also expanded. Microwave therapy devices commonly used in medical institutions have a frequency of 2450MHz, with a continuous wave power of up to 60W for physical therapy and a pulse wave peak power of up to 120W for treatment, falling into the microwave medium power category. Direct calorimetry of microwave medium power, or calorimetry for short, is a commonly used method for measuring microwave medium power in industry.

[0034] Figure 1 The figure schematically shows the principle of measuring microwave signal power by using calorimetry in the related art.

[0035] In related technologies, such as Figure 1 As shown, the calorimetric method for measuring microwave signal power mainly uses the following parts: a coolant tank, a heat exchanger, a flow meter, a load, a pump, an inlet thermometer, an outlet thermometer, an analog circuit, a display, a processing module, and an interface.

[0036] The thermal microwave power measurement principle is based on the first law of thermodynamics, the law of conservation of energy. First, based on the principle of calorimetry, the microwave power measurement is converted into a measurement of the heat of the calorimetric medium. Then, using the thermal equivalence principle, the heat of the calorimetric medium is converted into a measurement of DC power. The input microwave power is calculated by measuring the microwave conversion heat absorbed by the energy absorber.

[0037] An instrument or device that uses calorimetry to measure microwave medium power is called a microwave medium power calorimeter. Medium power calorimeters can be divided into two categories based on the shape of the energy absorber: dry-load calorimeters and flow-type calorimeters.

[0038] In recent years, the coolant flow-type microwave medium-power calorimetric measurement method based on a dry load has been extensively studied and applied. The RF microwave dry load absorbs microwave power and generates heat. The coolant flows through the heat-conducting surface of the RF microwave dry load and absorbs the load's heat, increasing its temperature. Temperature and flow sensors accurately measure the temperature difference at the coolant inlet and outlet of the heat-conducting surface cavity, as well as the liquid flow rate. The heat absorbed by the coolant is calculated, thereby deriving the measured input microwave power. Flow-type calorimeters often use liquids such as water, oil, alcohol, or a mixture as energy absorbers. The liquid can be static or flowing. Flow-type calorimeters derive the input microwave power by measuring changes in temperature, volume, and other characteristics of the liquid after heat absorption.

[0039] High power microwaves are radiated through metal waveguides to the liquid in the calorimeter, such as alcohol. After absorbing the power, the alcohol's temperature rises and its volume expands, and the alcohol level in the capillary capacitor will rise. By measuring the temperature change or volume expansion of the alcohol, the amount of microwave power absorbed by the alcohol can be calculated. The amount of alcohol expansion can be obtained by detecting the capacitance change of the capillary capacitor.

[0040] Calorimetry has advantages in high-accuracy measurement of microwave medium power and can be used as one of the priority research directions for establishing microwave medium power measurement standards. However, microwave measurement devices based on calorimetry are usually large in size and need to be tested in a fixed location, which is not convenient for on-site testing.

[0041] Figure 2 The following schematically shows a principle diagram of a microwave therapeutic apparatus measuring device according to an embodiment of the present invention. Figure 3 A schematic perspective view of a microwave therapeutic apparatus measuring device according to an embodiment of the present invention is shown. Figure 4 A first perspective view schematically shows the internal structure of the microwave therapeutic apparatus measuring device according to an embodiment of the present invention. Figure 5 A second perspective view schematically shows the internal structure of the microwave therapeutic apparatus measuring device according to an embodiment of the present invention. Figure 6 A third perspective stereoscopic diagram schematically shows the internal structure of the microwave therapeutic apparatus measuring device according to an embodiment of the present utility model.

[0042] As one aspect of the embodiment of the present invention, a microwave therapeutic apparatus measuring device is provided. Figures 2 to 6As shown, the microwave therapeutic instrument measuring device includes a lower box 1, an upper box 2 and a measuring component 3. A storage space is formed inside the lower box 1, and the upper box 2 can be installed on the lower box 1 in an openable and closable manner, which is suitable for installing an industrial all-in-one machine 5. The measuring component 3 is installed in the storage space, and the measuring component 3 includes an attenuation unit 31, a power sensor 32 and a spectrum analyzer 33. The attenuation unit 31 includes an attenuator 311, which is installed on the bottom surface of the lower box 1. The attenuator 311 is suitable for attenuating the microwave signal to be tested of the microwave therapeutic instrument to be tested to obtain an attenuated microwave signal. The power sensor 32 is installed on the bottom surface at intervals from the attenuation unit 31, and is suitable for obtaining the attenuated power of the attenuated microwave signal based on the attenuated microwave signal. The spectrum analyzer 33 is installed on the bottom surface at intervals from the attenuation unit 31 and the power sensor 32, and is suitable for obtaining the spectrum diagram of the attenuated microwave signal based on the attenuated microwave signal. Among them, the industrial all-in-one machine 5 obtains the power of the microwave signal to be tested based on the attenuated power, and obtains the frequency of the microwave signal to be tested based on the spectrum diagram.

[0043] The microwave therapeutic device measuring device according to the embodiment of the present invention, through the use of an attenuator, a power sensor, and a spectrum analyzer, can measure the power and frequency of the microwave signal from the microwave therapeutic device and determine whether the microwave signal from the microwave therapeutic device is within the medical microwave frequency band. The industrial all-in-one machine automatically collects, processes, and records data, reducing manual operations and improving efficiency and accuracy. The measurement components are installed in the lower case, facilitating operation and management, reducing errors caused by multiple connection and movement of components, and facilitating maintenance and replacement.

[0044] According to an embodiment of the present utility model, the frequency of the attenuated microwave signal obtained after attenuating the microwave signal to be tested emitted by the microwave therapeutic apparatus to be tested is consistent with the frequency of the microwave signal to be tested, and the spectrum diagram of the microwave signal to be tested can be obtained by the spectrum diagram of the attenuated microwave signal.

[0045] Figure 7 The figure schematically shows the composition of a microwave therapeutic apparatus in the related art.

[0046] like Figure 7As shown, microwave therapy devices typically utilize a magnetron and microwave processing module. These devices primarily consist of a microwave generation circuit, a control circuit, and a power supply circuit. These circuits include a main control transformer, a filament transformer, a host control unit, a high-voltage transformer, a magnetron, and an applicator. The core component of the microwave generation circuit is the magnetron, which serves as the microwave emission source. It consists of an anode, a resonant cavity, a cathode, and a magnetic field. When a certain DC voltage is applied to the magnetron filament, the cathode heats up. Simultaneously, a DC anode high voltage is applied between the anode and cathode. Electrons emitted by the cathode, under the influence of a strong magnetic field, fly toward the anode. The anode has multiple small resonant cavities. When electrons hit the anode, they oscillate within these cavities, generating high-frequency microwaves that convert the electrons' kinetic energy into microwave energy. This microwave energy is coupled through a magnetic ring, a waveguide, and a coaxial cable, and then output from the radiator (antenna) to the treatment site on the human body. Because the anode high voltage and the magnetron's microwave emission power are linearly related, controlling the anode voltage allows for precise timing and quantitative microwave emission. Therefore, the magnetron and its voltage control system determine the operating frequency and output power of the microwave therapeutic device, and the performance of the magnetron directly determines the performance of the instrument.

[0047] According to an embodiment of the present invention, the industrial all-in-one machine includes a display module and a processing module. The processing module can be hardware or a computer program capable of processing data or instructions, and can be programmed using a target programming language, which can be C language.

[0048] According to an embodiment of the present invention, the attenuation unit attenuates the signal power of the microwave signal to be measured.

[0049] According to an embodiment of the present invention, the power sensor may be communicatively connected to the processing module via a Universal Serial Bus (USB) interface, and the spectrum analyzer may be communicatively connected to the processing module via a serial port.

[0050] According to an embodiment of the present invention, the processing module may store an attenuation value corresponding to the attenuation unit, and the attenuation value is related to the inherent properties of the attenuator included in the attenuation unit.

[0051] According to an embodiment of the present invention, the following formulas (1) to (3) may be built into the processing module so as to obtain the signal power of the microwave signal to be measured by attenuating the signal frequency of the microwave signal and the attenuation value of the attenuation unit (1) according to the following formulas. In some embodiments, only formula (3) may be built into the processing module.

[0052] (1);

[0053] Among them, A represents the attenuation coefficient, the unit is dB (decibel), P outCharacterizes the attenuator output power, in W (watt), P in Characterizes the attenuator input power in W.

[0054] According to an embodiment of the present invention, the input power P in , output power P out Convert the units according to formula (2).

[0055] (2);

[0056] Where P represents the microwave power in W, and dBm represents the measured value of the power sensor.

[0057] According to the embodiment of the present invention, the final measurement model obtained by the above formulas (1) and (2) is shown in the following formula (3).

[0058] (3).

[0059] According to an embodiment of the present invention, there is also a storage space inside the upper box body 2. The processing module is installed between the bottom surface of the storage space inside the upper box body and the display module. The display module is installed on the surface of the upper box body to facilitate viewing the display module when the upper box body is opened relative to the lower box body.

[0060] According to the embodiment of the present invention, by installing the attenuation unit, power sensor, spectrum analyzer and industrial all-in-one machine in one box, it can be made more convenient to use the microwave therapeutic instrument measuring device. The installation method of the present invention makes the installation position of each component reasonable and saves space, reduces the overall volume of the system, and is convenient for use in various scenarios.

[0061] According to an embodiment of the present invention, the upper box and the lower box can be hinged by a hinge, and a lock for locking the upper box and the lower box at one end opposite to the hinge is also provided for easy carrying.

[0062] like Figure 5 and Figure 6 As shown, the attenuation unit further includes a coupler 313. The input end of the coupler 313 is connected to the output end of the attenuator 311, the first output end of the coupler 313 is connected to the power sensor 32, and the second output end of the coupler 313 is connected to the spectrum analyzer 33. The coupler 313 is used to transmit the attenuated microwave signal to the power sensor 32 and the spectrum analyzer 33 respectively.

[0063] In an illustrative embodiment, the attenuation values ​​and uncertainties of the attenuator when measuring different frequencies are shown in Table 1 below.

[0064] Table 1

[0065]

[0066] According to an embodiment of the present utility model, the signal power of the attenuated microwave signal output from the first output end of the coupler is substantially the same as the signal power of the attenuated microwave signal output from the attenuator, and the signal power of the attenuated microwave signal output from the second output end is smaller, much smaller than the signal power of the attenuated microwave signal output from the first output end. By connecting the coupler after the attenuator, the attenuated microwave signal can be transmitted in parallel to the power sensor and the spectrum analyzer without affecting the measurement accuracy of the power sensor for the power of the attenuated microwave signal.

[0067] According to the embodiment of the present utility model, Figures 4 to 6 As shown, the attenuation unit 31 further includes a cooling module 312 adapted to dissipate heat from the attenuator 311 to reduce the operating temperature of the attenuator 311. It is understood that the cooling module is also adapted to dissipate heat from the environment surrounding the attenuator to reduce the temperature of the environment surrounding the attenuator.

[0068] According to the embodiment of the present utility model, Figure 5 As shown, the cooling module 312 includes a plurality of mounting members 3121 and a radiator 3122. The radiator 3122 is mounted between the attenuator 311 and the bottom surface of the accommodation space along the length direction of the attenuator 311 through the plurality of mounting members 3121, and is suitable for dissipating heat from the attenuator 311.

[0069] According to the embodiment of the present utility model, Figure 5 As shown, each mounting member includes a first mounting portion and a second mounting portion. The first mounting portion is mounted on one of the side walls of the radiator, and the second mounting portion is connected to the first mounting portion and mounted on the bottom wall of the storage space, and is suitable for cooperating with the first mounting portion to install the radiator in the storage space.

[0070] According to the embodiment of the present utility model, Figures 3 to 5 As shown, the lower case has an air inlet 13 and an air outlet 14 at each end along its length. The cooling module 312 also includes an air inlet fan 3123 and an air outlet fan 3124. The air inlet fan 3123 is mounted on the end of the radiator 3122 near the air inlet 13, and the air outlet fan 3124 is mounted on the end of the radiator 3122 near the air outlet 14. The air inlet fan 3123 is adapted to cooperate with the air inlet fan 3123 to remove heat from the radiator. It is understood that the air inlet fan 3123 and the air outlet fan 3124 can also be mounted separately within the accommodation space, located above the air inlet 13 and the air outlet 14.

[0071] According to an embodiment of the present invention, the cooling module 312 further includes a protective cover (not shown in the figure), which is respectively installed on the air inlet 13 and the air outlet 14 to filter the air entering the accommodation space.

[0072] According to the embodiment of the present utility model, Figures 4 to 6 As shown, a first opening is opened on one side wall of the lower box body, and the microwave therapy instrument measuring device also includes a power supply component 4, which is installed in the accommodating space through the first opening to allow an external power supply unit to provide a first power supply to the measuring component and the industrial all-in-one machine through the power supply component.

[0073] According to the embodiment of the present utility model, Figures 4 to 6 As shown, power supply assembly 4 includes a socket 41 and an adapter 42. Socket 41 is mounted on the first opening and is adapted to receive a first power source. Adapter 42 is mounted on the base and supported below the power sensor via support member 16. The adapter is adapted to convert the first power source from the socket into a second power source compatible with the spectrum analyzer, thereby powering the spectrum analyzer using the second power source.

[0074] According to the embodiment of the present utility model, Figure 5 As shown, the support member 16 can be constructed into a roughly U-shape, with the opening of the U-shaped support member 16 facing downward, forming a receiving portion between the support member 16 and the bottom surface of the lower box body, and the adapter is received in the receiving portion. The support member 16 can be detachably mounted on the bottom surface of the lower box body by bolts. It is understood that the support member 16 can also have other structures. According to the embodiment of the utility model, Figures 4 to 6 As shown, the power supply assembly 4 further includes an expansion unit 43 , which is installed in the accommodation space and is suitable for connecting the industrial all-in-one machine 5 to the power sensor 32 and the spectrum analyzer 33 for communication.

[0075] According to the embodiment of the present utility model, Figure 4 and Figure 6 As shown, the power supply assembly 4 further includes a switch 44 , which is mounted on the outer wall of the lower box and is adapted to allow or prevent the first power supply from being input to the industrial all-in-one machine, the measuring assembly, and the adapter.

[0076] According to the embodiments of the present invention, considering that the detection locations of microwave therapeutic devices are usually treatment rooms, wards, operating rooms, etc. in hospitals, the construction of the detection device should be portable and safe while ensuring the realization of the measurement function. The present invention measures the power of the microwave signal to be measured output by the microwave therapeutic device by combining a coupler attenuator and a power sensor. Compared with the method of measuring power by the calorimetric method in the related art, the power measurement method adopted by the present invention uses an instrument that is smaller and easier to carry. The entire device of the present invention consists of an attenuation unit, a power sensor, a microwave spectrum analyzer and an industrial all-in-one machine, which integrates the functions of a spectrum analyzer, a microwave power meter, a microwave sensor, an attenuator, etc. It is not only easy to carry and has stable performance, but also the heat dissipation system ensures the safety of the measurement system, and can effectively avoid line damage and personal injury caused by operator misoperation.

[0077] According to the embodiment of the present utility model, Figure 3 As shown, the lower case includes a main body 11 and a cover 12. The cover 12 is mounted on the main body 11 and is adapted to cooperate with the main body to form a storage space. A storage cavity is formed between the upper case 2 and the cover 12, which is adapted to accommodate the input unit 6 for inputting operations to the industrial all-in-one machine 5.

[0078] According to an embodiment of the present invention, the input unit 6 may include a device capable of inputting information, such as a keyboard and a mouse.

[0079] According to an embodiment of the present invention, by adding a cover and an input unit, the target object can input various information more easily when normally using the microwave therapeutic device measuring device to measure the microwave therapeutic device, making the system more convenient to use and carry.

[0080] According to the embodiment of the present utility model, Figure 4 and Figure 5 As shown, two opposite inner walls of the lower box body extend inwardly in the horizontal direction to form protrusions 15 to support the cover body. It is understandable that the number of protrusions 15 can be multiple, or a circle of protrusions can be formed by extending inwardly in the horizontal direction along the inner wall of the lower box body according to actual needs.

[0081] According to the embodiment of the present utility model, Figure 3 As shown, the edge of the cover body can be recessed inward to form an operating groove to facilitate the removal and installation of the cover body.

[0082] According to an embodiment of the present utility model, the processing module is also used to communicate with the spectrum analyzer, and to intercept the spectrum diagram based on the reference frequency and frequency span sent by the display module to obtain a target spectrum diagram corresponding to the reference frequency and frequency span; wherein the display module is also used to display the target spectrum diagram.

[0083] According to an embodiment of the present invention, the display module receives the reference frequency and frequency span input by the target object, and the target object may be a user using the microwave therapeutic apparatus measuring device.

[0084] According to an embodiment of the present invention, the reference frequency can be the center frequency of the microwave therapeutic device to be tested, and the frequency range centered on the center frequency can be determined through the frequency span. For example, if the center frequency is 2450Hz and the span is 100Hz, the frequency range of the target spectrum graph that can be determined is: [2400, 2500], and the frequency corresponding to the point with the highest amplitude in the target spectrum graph is used as the frequency detection result.

[0085] According to an embodiment of the present invention, the spectrum diagram can be intercepted by the center frequency and span to be a target spectrum diagram with a frequency range determined according to the frequency span and the reference frequency, so that it can be intuitively determined whether the frequency of the microwave therapeutic device meets the requirements.

[0086] According to an embodiment of the present invention, the processing module is also used to generate an alarm message when the signal power of the microwave signal to be measured is not within a preset power range and / or the center frequency in the target spectrum diagram is not within a preset frequency range, and to send the alarm message to the display module; wherein the display module is also used to display the alarm message after receiving the alarm message.

[0087] According to an embodiment of the present invention, the preset power range can be determined based on the normal power of the microwave therapeutic device and the preset power floating amount. The preset power floating amount can be an acceptable normal floating amount. For example: the normal power is 60W, the preset floating amount is 5%, then the preset power range is [57W, 63W].

[0088] According to an embodiment of the present invention, the preset frequency range can be determined by the reference frequency and the preset frequency fluctuation amount, and the preset frequency fluctuation amount can be an acceptable normal fluctuation amount. For example: the reference frequency is 1000MHz, the preset fluctuation amount is 5%, and the preset power range is [995W, 1050W].

[0089] According to an embodiment of the present invention, when it is determined that the signal power of the microwave signal to be measured is not within the preset power range, or the center frequency in the target spectrum diagram is not within the preset frequency range, an alarm message can be generated and displayed through the display module to indicate that there is an abnormality in the microwave therapy device.

[0090] According to an embodiment of the present invention, the processing module is further configured to receive a control instruction sent by the display module, and based on the control instruction, control the reception and processing of the signal frequency and spectrum diagram of the attenuated microwave signal.

[0091] According to an embodiment of the present invention, the control instruction may include a start instruction and a stop instruction. The start instruction includes an instruction to start receiving the signal frequency and spectrum diagram of the attenuated microwave signal, and the stop instruction includes an instruction to stop receiving the signal frequency and spectrum diagram of the attenuated microwave signal.

[0092] According to an embodiment of the present invention, the start instruction may further include an instruction to start processing the signal frequency of the attenuated microwave signal to obtain the signal frequency of the microwave signal to be measured, and the stop instruction may further include an instruction to stop intercepting the spectrum graph to obtain the target spectrum graph.

[0093] According to an embodiment of the present invention, the control instruction is not limited and may also include an instruction for the microwave therapeutic apparatus detection system to start or stop measuring the microwave therapeutic apparatus to be tested.

[0094] According to an embodiment of the present utility model, the control instructions of the display module can be obtained from the input information of the target object, and buttons corresponding to the start instruction and the stop instruction can be set on the display module. When the target object clicks the button corresponding to the start instruction or the button corresponding to the stop instruction, the display module sends the control instruction corresponding to the button.

[0095] According to an embodiment of the present invention, by providing a control instruction button on the display module, the data processing and receiving process of the system can be more conveniently controlled.

[0096] According to an embodiment of the present invention, the power sensor includes a thermocouple power sensor.

[0097] According to an embodiment of the present invention, in the process of measuring medical microwave power, it is desired that the power sensor has a wide dynamic range, low drift and small standing wave ratio, and can accommodate a wide frequency range. The power sensor can be a thermocouple power sensor.

[0098] In an illustrative embodiment, the power sensor can be calibrated to obtain a calibration factor of 100.1% and an expanded uncertainty of U=0.9% (k=2) in the frequency range of 300MHz to 2000MHz; and a calibration factor of 100.1% and an expanded uncertainty of U=1.0% (k=2) in the frequency range of 2000MHz to 5000MHz, which fully meets the detection requirements of medical microwaves.

[0099] Figure 8The schematic diagram shows a principle diagram of a thermocouple power sensor according to an embodiment of the present utility model.

[0100] like Figure 8 As shown, the thermocouple power sensor includes a capacitor C, a capacitor B, two different conductors with a hot junction and a cold junction, the different conductors have a thermocouple film, and are connected to a DC voltmeter.

[0101] According to an embodiment of the present invention, the operating principle of a thermocouple power sensor is that the connection of two dissimilar conductors forms a pair of thermocouple junctions, and any temperature gradient across these junctions will generate a voltage. The thermocouple structure of the thermocouple power sensor is designed to include a resistor that dissipates most of the applied power. The temperature rise of the resistor creates a temperature gradient across the adjacent thermocouple junction, thereby generating a voltage proportional to the power. In practice, two sets of such structures can be oriented so that the temperature rise generated by the power dissipated by the resistor causes the two thermocouple structures to generate an additive thermoelectric voltage, while the temperature gradient generated by the ambient temperature change causes the thermoelectric voltage to cancel each other, thereby minimizing the drift of the zero reading. The resistance value of the resistor is designed to provide a well-matched terminal for the transmission line.

[0102] According to an embodiment of the present invention, the thermocouple element used in the thermocouple power sensor may be composed of gold, (n)-type silicon and tantalum nitride resistance materials, and the thermocouple thin film structure provides the small size and precise geometry required for operating at frequencies exceeding 40 GHz.

[0103] Figure 9 The internal structure of the thermocouple power sensor according to the embodiment of the present utility model is schematically shown.

[0104] like Figure 9 As shown, the thermocouple power sensor may include a thermocouple, a DC chopper, an input amplifier, an amplifier and attenuator, a synchronous detector, a DC amplifier, an analog / digital conversion module, etc.

[0105] According to an embodiment of the present invention, the software control module may be a processing module, which implements detection control of the thermocouple power sensor for the attenuated microwave signal through control instructions sent by the display module, such as: starting or pausing detection control, and zero point calibration control.

[0106] According to an embodiment of the present utility model, the software control module can also be a part included in the thermocouple power sensor circuit. By establishing a communication connection between the processing module and the software control module, when the processing module receives a control instruction sent by the display module, the control instruction is sent to the software control module to realize control of the thermocouple power sensor.

[0107] According to embodiments of the present invention, the sensitivity of a thermocouple element can be characterized by the amplitude of its DC output voltage relative to the RF power dissipated by the sensor. Typical sensitivity is approximately 160 μV / mW, and power levels as low as 1.0 μW can be measured using this type of sensor. The DC voltage that must be measured can be as low as 0.16 μV, so the amplifiers within the thermocouple power sensor must provide high gain and must not add or subtract any additional DC bias to or from the microvolt voltage being measured. A chopped input amplifier—a combination of a DC chopper, an input amplifier, an amplifier and attenuator, and a synchronous detector—can meet this requirement. The DC chopper operates with a square wave drive signal. The input capacitors of the AC-coupled amplifier are connected to the sensor output or to ground. The input capacitors are charged by the DC input voltage and discharged from ground, resulting in a square wave signal to the input amplifier with an amplitude proportional to the sensor output.

[0108] An AC-coupled amplifier—an amplifier and attenuator with sufficiently high gain—generates a multi-volt output square wave without bias voltage. A synchronous detector relies on another switch operating on the same signal as the DC chopper, connecting the amplifier output to an RC (resistor) filter or grounding the filter input. Because the output switching is synchronized with the input DC chopper, the filter capacitor charges during the same half-cycle of the square wave generated by the input DC voltage. The filter output is a DC voltage that is easily processed and displayed. Most thermocouple power meters provide a precision reference source with calibrated output power, which is used to adjust the system's gain to compensate for sensitivity variations between thermocouple elements. Whenever a different sensor is connected to the thermocouple power sensor, this adjustment is as simple as connecting the sensor to the reference source and activating the appropriate function.

[0109] According to an embodiment of the present invention, an attenuator and a coupler are cascaded to couple the signal power of the microwave signal to be measured into a range that can be measured by a power sensor. The signal power of the microwave signal to be measured is then obtained based on the known attenuation value. This implementation method can be referred to as the coupled attenuation method.

[0110] According to the embodiments of the present invention, in some embodiments, it is also possible to obtain the signal power of the microwave signal to be measured by only connecting a coupler or only connecting an attenuator to a power sensor in cascade. This method can also be called a coupling attenuation method. Figure 10-11 shown.

[0111] Figure 10 The following schematically shows a principle diagram for measuring the signal power of a microwave signal to be measured according to an embodiment of the present utility model.

[0112] According to an embodiment of the present invention, the microwave signal to be measured is input into an attenuator, and the attenuator is connected to a microwave low-power meter to obtain the signal power of the microwave signal to be measured, wherein the microwave low-power meter can be the power sensor in the present invention, specifically a thermocouple power sensor.

[0113] Figure 11 The following schematically shows a principle diagram for measuring the signal power of a microwave signal to be measured according to another embodiment of the present invention.

[0114] like Figure 11 As shown, by inputting the microwave signal to be measured into the directional coupler, the directional coupler is connected to the load and the microwave low power meter respectively, thereby obtaining the signal power of the microwave signal to be measured.

[0115] According to the embodiments of the present invention, microwave low-power measurement technology is relatively mature, with relatively complete measurement methods and equipment, and high measurement accuracy. Related technologies have established microwave low-power standard devices based on low-power calorimeters or microcalorimeters, with measurement uncertainty reaching 0.2%. Therefore, using a microwave low-power meter or low-power measurement device and adopting the coupled attenuation method to construct a power test device for the microwave signal to be measured can achieve high accuracy and good traceability. Furthermore, because the attenuator and coupler are both passive components, the performance of the measurement link is stable after establishment, with better measurement reliability.

[0116] Figure 12 The schematic diagram shows a principle diagram of a spectrum analyzer according to an embodiment of the present utility model.

[0117] like Figure 12 As shown, the spectrum analyzer analyzes the frequency domain characteristics of the microwave signal. Therefore, since the attenuator attenuates the power characteristics of the microwave signal to be measured, the frequency domain characteristics of the attenuated microwave signal are the same as those of the microwave signal to be measured. Specifically, the spectrum analyzer includes: an attenuator, a low-pass filter, a mixer, an intermediate frequency gain, an intermediate frequency filter, a logarithmic amplifier, an envelope detector, a video filter, a single-chip microcomputer, a display unit, a local oscillator, a swept frequency generator, and a crystal oscillator unit.

[0118] According to an embodiment of the present invention, the basic operating principle of a spectrum analyzer is that an input signal is applied to a mixer via an attenuator. After mixing with a local oscillator signal provided by an adjustable swept-frequency local oscillator circuit, the resulting intermediate frequency (IF) signal is amplified, filtered, and detected, converting AC signals and various modulated signals into a regularly varying DC signal for display. The input attenuator, with a 10dB step, primarily serves to expand the spectrum measurement range, effectively preventing damage to instrument components caused by excessive signals. This ensures that the mixer is in its linear region relative to the measured signal, ensuring a good match between the attenuated microwave signal and the spectrum measurement module. The signal then passes through a low-pass filter to remove unwanted high-frequency components outside the spectrum analyzer's frequency range. The signal is then fed to the mixer for mixing with a local oscillator signal generated by a local oscillator to produce an IF signal for subsequent signal processing.

[0119] According to the embodiments of the present invention, microwave radio frequency signals undergo intermodulation and interference after mixing. Therefore, to accurately distinguish the intermediate frequency (IF) signal, an IF filter is used to separate closely spaced signals and suppress signals other than the IF signal. The IF filter is a key component in spectrum analysis, relying primarily on it to distinguish signals of different frequencies. Many key performance indicators of a spectrum analyzer (such as measurement resolution, sensitivity, speed, and accuracy) are related to the bandwidth and shape of the IF filter. The variable gain circuit and attenuator in the IF circuit are controlled together by a single-chip microcomputer. The overall gain of the spectrum analyzer is adjusted based on the input signal amplitude, and the range of this gain determines the reference level range. The logarithmic amplifier circuit determines the display dynamic range of the spectrum analyzer and its gain adjustment steps.

[0120] According to an embodiment of the present invention, the spectrum analyzer also has a built-in digital LCD screen. This allows for viewing not only the spectrum graph via the display module but also the built-in digital LCD screen. Since data can only be displayed using discrete pixels, an envelope detector is used to detect the signal output by the logarithmic amplifier. This involves dividing the actual signal into multiple segments, applying an algorithm to these segments to derive a point representing the value corresponding to each pixel, and finally displaying these pixel values ​​on the screen. Detection methods within the envelope detector include: maximum peak detection (selecting the maximum value within a segment); minimum peak detection (selecting the minimum value); sampling detection (selecting values ​​at specific locations); root mean square (RMS) detection (taking the root mean square (RMS) value of a point within a segment); and average detection (taking the average value of the midpoint of a segment).

[0121] According to an embodiment of the present invention, an observation window may be further provided on the cover body to display the digital LCD screen of the spectrum analyzer.

[0122] According to the embodiments of the present invention, the detected envelope signal after detection enters the video filter, a low-pass filter primarily used to smooth noise in the display. By reducing the video bandwidth, noise in the spectrum display can be smoothed, which is very helpful for displaying small signals.

[0123] According to an embodiment of the present invention, the output waveform of the spectrum analyzer is an XY trace on the screen, which is mapped onto a scale consisting of 10 horizontal grids and 10 vertical grids. The horizontal axis represents frequency, and its scale value increases linearly from left to right. Frequency setting is generally a two-step process: first, the frequency is adjusted to the center line of the scale using the center frequency control, and then the frequency span (span) across the 10 grids is adjusted using the frequency span control. These two controls are independent of each other, so the span does not change when the center frequency is changed. Alternatively, the start and end frequencies can be set instead of the center frequency and span. The spectrum diagram can be used to determine the absolute frequency of the microwave signal to be measured and the relative frequency difference between any two signals.

[0124] According to an embodiment of the present invention, the vertical axis scale is divided by amplitude. Either a linear scale (calibrated in voltage) or a logarithmic scale (calibrated in decibels) can be used. A logarithmic scale can display a wider range of values ​​than a linear scale. A logarithmic scale can simultaneously display signals with amplitude differences of 70 to 100 dB (voltage ratios of 3200 to 100,000 or power ratios of 10,000,000 to 1,000,000,000), while a linear scale can only be used for signals with amplitude differences of no more than 20 to 30 dB (voltage ratios of 10 to 32). For both of these situations, calibration techniques can be used to determine the absolute value of the level on the highest row of the dial, or the reference level. The values ​​at other locations on the dial are then determined based on the ratios corresponding to each grid. This allows the spectrum to measure both the absolute value of a signal and the relative amplitude difference between any two signals, with the frequency and amplitude scale values ​​annotated on the screen.

[0125] According to an embodiment of the present invention, a spectrum analyzer can be embedded in a spectrum measurement module based on an STM32F405 single-chip microcomputer. The microwave signal to be measured should be less than 10dBm after attenuation, otherwise the circuit will be damaged. The signal is waveform-drawn by the spectrum analyzer and connected to the processing module and the display module via a USB port, thereby realizing center frequency control and data transmission.

[0126] According to the embodiment of the present invention, the microwave therapeutic instrument measuring device is mainly composed of an attenuator, a power sensor, a spectrum analyzer, and a heat dissipation system. The system structure is as follows: Figure 6As shown, the output port of the microwave therapy device is connected to the input port of the box, that is, the attenuator input port, through a high-frequency coaxial cable. After passing through the attenuator, the signal is sent to the power sensor and spectrum analyzer respectively through a coupler. In the spectrum analyzer, it is calculated, cached, imaged, and AD-converted by the built-in single-chip microcomputer system, and then sent to the processing module for processing and displayed by the display module. The operating environment temperature of the power sensor is 0 to 55°C. If the attenuator works for a long time, it will continuously generate heat. Excessive heat will not only affect the measurement results of the power sensor, but may also cause the circuit to burn, resulting in personal injury and equipment damage. Therefore, the system has a built-in heat dissipation module composed of components such as heat sinks and fans to control the surface temperature and ambient temperature of the attenuator, thereby ensuring the safe and effective operation of the calibration device and the accuracy and reliability of the measurement results.

[0127] In an illustrative embodiment, the overall size of the microwave therapeutic instrument measuring device is 44.2 cm × 34.1 cm × 21.8 cm. The box is equipped with a handle for easy carrying and can quickly and accurately measure power and frequency.

[0128] According to an embodiment of the present invention, the spectrum analyzer's signal reception and processing utilizes an STM32F405 microcontroller to implement functions such as signal A / D conversion, spectrum calculation, image plotting, and serial communication. A power sensor, incorporating power calculation, A / D conversion, and data communication, connects to the processing and display modules via a USB interface. Communication is achieved after installing a software driver. The processing module, programmable in C, reads the spectrum analyzer's spectrogram output waveform and frequency values, implementing frequency selection, sensor calibration and zeroing, and power display. The actual power output of the microwave therapeutic device is then determined using the known attenuation value of the attenuator.

[0129] According to an embodiment of the present invention, the industrial all-in-one machine is installed with host computer software, which realizes calculation and control through the processing module, and realizes interface display and user input of the host computer software through the display module.

[0130] According to an embodiment of the present invention, the host computer software has a human-computer interaction interface (HMI) that utilizes a display module for display. The host computer software communicates with the spectrum analyzer via a serial port and with the power sensor via USB. USB communication is used for connection and communication with the power sensor, while serial communication is used for communication with the spectrum analyzer. The interface displays measurement data in real time and utilizes multi-threading technology to ensure that interface refreshes do not affect other software operations.

[0131] According to the embodiment of the present invention, the main workflow for the target object to use the host computer software to determine the power and frequency of the microwave signal to be measured is as follows: double-click to run the microwave therapeutic instrument test system; enter the user name and password to log in; connect the power sensor; after the connection is successful, the center frequency can be set; click to start receiving to display the power in real time; click to stop sending the power acquisition function and the interface stops displaying; set the spectrum analyzer communication serial port; receive in real time and display a line graph of the spectrum analyzer data.

[0132] Figure 13 The following schematically shows a working flow diagram of an industrial control all-in-one machine according to an embodiment of the present utility model.

[0133] like Figure 13 As shown, in response to the display module receiving the double-click operation of the software icon corresponding to the upper machine software by the target object through the input unit, the startup instruction is sent to the processing module, the processing module starts the upper machine software, and displays the login interface of the microwave therapeutic instrument measuring device on the display module; in response to the display module receiving the user name and password input by the target object, the user name and password input by the target object are verified through the user name and password library to determine whether the user name and password are correct, and the user name and password library stores multiple user names and passwords corresponding to the user names; if correct, the system main interface is called by the processing module, and displayed by the display module; the processing module is connected to the power sensor When the power sensor is successfully connected and the start receiving button on the display interface is clicked by the target object, a start instruction is sent to the processing module, so that the processing module receives and calculates the signal power of the attenuated microwave signal, and after obtaining the signal power of the microwave signal to be measured, sends it to the display module for real-time display. The reference frequency and frequency span can be set; the processing module is connected to the spectrum analyzer through the communication serial port set by the target object on the display module, receives the spectrum graph in real time, and displays it on the display module. In response to the stop button on the display interface being clicked by the target object, a stop instruction is sent to the processing module to stop obtaining the signal power of the attenuated microwave signal, and the display module stops displaying the power.

[0134] Figure 14 The following schematically shows the frequency spectrum of the microwave therapeutic apparatus according to the embodiment of the present invention when the frequency output is normal. Figure 15 The diagram schematically shows a spectrum diagram of a microwave therapeutic apparatus according to an embodiment of the present invention when the frequency output is abnormal.

[0135] According to the embodiments of the present invention, the microwave therapy device based on magnetron technology is unstable in terms of power, frequency and phase of its microwave output due to the instability of the working voltage and other factors. It is constantly changing over time. The frequency and power of the microwave output by the magnetron obey the Gaussian distribution in terms of probability. For example, the microwave frequency output by a 2.45GHz magnetron in reality is a frequency that is randomly changing with a Gaussian distribution within a certain frequency band with 2.45GHz or a certain frequency around it as the center frequency point. We assume that the frequency of the microwave output by the magnetron obeys a normal distribution with a mean of 2.45×109 and a standard deviation of 5×107, the phase randomly jumps with equal probability within the range of 0° to 360°, and the random power obeys a normal distribution with a mean of 1000 and a standard deviation of 25. Specifically, Figure 14 As shown, the spectrum diagram when the output of the microwave therapeutic device magnetron is unstable can be shown as Figure 15 shown.

[0136] According to the embodiments of the present invention, the present invention verifies the feasibility of the calibration device by comparing the test data of the microwave therapeutic instrument measurement device with the measurement data of the E4419B power meter, E9034A power probe, 40dB attenuator, spectrum analyzer, etc. in the related art. To verify the measurement function of the microwave therapeutic instrument measurement device, the present invention selected the power values ​​of a typical medical microwave therapeutic instrument in different operating modes and conducted experimental verification work. Table 2 shows the power measurement results of the microwave therapeutic instrument measurement device of the present invention, Table 3 shows the power measurement results of power detection devices such as the E4419B power meter and E9034A power probe in the related art, Table 4 shows the comparison results of the power measurement results of the present invention and the related art, and Table 5 shows the frequency comparison results.

[0137] Table 2

[0138]

[0139] Table 3

[0140]

[0141] Table 4

[0142]

[0143] By comparing the measurement results with those of detection devices in related technologies that are more expensive, larger in size, and can only perform power detection but not frequency detection, the maximum mean absolute error measured by this system is -0.4W, and the minimum is 0.1W, indicating that the measurement results are relatively accurate and the performance is acceptable; the maximum standard deviation is 0.4W, and the minimum is 0.1W, indicating that the measurement results are relatively stable and can be applied to power output detection of microwave therapeutic devices.

[0144] Table 5

[0145]

[0146] By comparing the power measurement results of the microwave therapeutic instrument measuring device of the present invention with those of a spectrum analyzer in the related art that can only measure frequency, it can be seen that the relative error is only 0.4%, which verifies the accuracy and reliability of the spectrum measurement module of the present device.

[0147] According to the embodiment of the present utility model, the entire detection system is composed of an attenuator, a microwave power sensor, a spectrum measurement module, and an industrial all-in-one machine, which accurately measures the power and frequency of medical microwave signals. The upper machine software uses USB communication-related technologies to connect and communicate with the power sensor, and uses serial communication technology to communicate with the spectrum analyzer, making the test function of the microwave therapeutic instrument more integrated, optimizing the operating steps, and combining the functions of measuring power and measuring spectrum into one. The interface during measurement displays the power reading and the line graph of the spectrum analyzer in real time, allowing users to observe the measurement data more intuitively. The entire device is integrated into a box, which not only improves portability, but also enables safe, accurate, and rapid measurement of medical microwaves, greatly meeting the on-site detection needs of medical microwave therapeutic equipment.

[0148] The above describes embodiments of the present invention. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Although each embodiment has been described separately above, this does not mean that the measures in each embodiment cannot be used in combination to advantage. The scope of the present invention is defined by the appended claims and their equivalents. Without departing from the scope of the present invention, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

Claims

1. A microwave therapeutic instrument measuring device, characterized in that: include: The lower box body forms a receiving space inside; The upper box body is installed on the lower box body in an openable and closable manner, and is suitable for installing an industrial all-in-one machine; as well as A measuring assembly is installed in the accommodating space, and the measuring assembly includes: an attenuation unit, comprising an attenuator, mounted on the bottom surface of the box, wherein the attenuator is adapted to attenuate the microwave signal to be tested of the microwave therapeutic apparatus to be tested to obtain an attenuated microwave signal; a power sensor, installed on the bottom surface at a distance from the attenuation unit, and adapted to obtain the attenuation power of the attenuated microwave signal based on the attenuated microwave signal; and a spectrum analyzer, installed on the bottom surface at intervals from the attenuation unit and the power sensor, and adapted to obtain a spectrum diagram of the attenuated microwave signal based on the attenuated microwave signal; The industrial all-in-one machine obtains the power of the microwave signal to be measured according to the attenuated power, and obtains the frequency of the microwave signal to be measured according to the spectrum diagram.

2. The microwave therapeutic apparatus measuring device according to claim 1, characterized in that: The attenuation unit further includes: The cooling module is adapted to dissipate heat from the attenuator to reduce the operating temperature of the attenuator.

3. The microwave therapeutic apparatus measuring device according to claim 2, characterized in that: The cooling module comprises: Multiple mountings; A radiator is installed between the attenuator and the bottom surface of the accommodation space along the length direction of the attenuator through a plurality of the mounting members, and is suitable for dissipating heat from the attenuator.

4. The microwave therapeutic apparatus measuring device according to claim 3, characterized in that: The lower box body is provided with an air inlet and an air outlet at both ends along the length direction, respectively. The cooling module further comprises: an air inlet fan, mounted on one end of the radiator close to the air inlet; and An air outlet fan is installed at one end of the radiator close to the air outlet and is suitable for cooperating with the air inlet fan to take away the heat emitted by the radiator.

5. The microwave therapeutic apparatus measuring device according to claim 4, characterized in that: The cooling module further comprises: Protective covers are respectively installed on the air inlet and the air outlet.

6. The microwave therapeutic apparatus measuring device according to any one of claims 1 to 5, characterized in that: A first opening is provided on one side wall of the lower box body, and the microwave therapeutic apparatus measuring device further comprises: A power supply component is installed in the accommodating space through the first opening to allow an external power supply unit to provide a first power supply to the measuring component and the industrial all-in-one machine through the power supply component.

7. The microwave therapeutic apparatus measuring device according to claim 6, characterized in that: The power supply assembly includes: a socket mounted on the first opening and adapted to receive the first power source; and An adapter is mounted on the lower box and supported below the power sensor by a support member. The adapter is suitable for converting the first power supply from the socket to obtain a second power supply matching the spectrum analyzer, so as to use the second power supply to power the spectrum analyzer.

8. The microwave therapeutic apparatus measuring device according to claim 7, characterized in that: The power supply assembly further includes: The expansion unit is installed in the accommodating space and is suitable for connecting the industrial all-in-one machine with the power sensor and the spectrum analyzer for communication.

9. The microwave therapeutic apparatus measuring device according to claim 7, characterized in that: The power supply assembly further includes: A switch is installed on the outer wall of the lower box and is suitable for allowing or preventing the first power supply from being input to the industrial all-in-one machine, the measuring component and the adapter.

10. The microwave therapeutic apparatus measuring device according to claim 1, characterized in that: The lower box includes: a main body; and a cover body, mounted on the main body, and adapted to cooperate with the main body to form the accommodation space; Wherein, a receiving cavity is formed between the upper box body and the cover body, and the receiving cavity is suitable for receiving an input unit for performing input operations on the industrial all-in-one machine.

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