Measuring system of microwave therapeutic apparatus

Abstract

The invention provides a microwave therapeutic instrument measuring system which can be applied to the field of microwave therapy. The microwave therapeutic instrument measuring system comprises an attenuation module which is used for attenuating a received microwave signal to be measured to obtain a microwave attenuation signal and transmitting the microwave attenuation signal to a power sensor module and a spectrum analysis module; the power sensor module is connected with the first output end of the attenuation module and is used for measuring the signal power of the microwave attenuation signal; the spectrum analysis module is connected with the second output end of the attenuation module and is used for obtaining a spectrogram of the attenuated microwave signal based on the attenuated microwave signal; a processing module which is in communication connection with the power sensor module and is used for obtaining the signal power of the microwave signal to be measured based on the signal frequency of the microwave attenuation signal and the attenuation value of the attenuation module; and the display module is in communication connection with the processing module and is used for displaying the signal power and the spectrogram of the microwave signal to be detected.

Description

Technical Field

[0001] The present disclosure relates to the field of microwave therapy, and in particular to a microwave therapy instrument measurement system. Background Art

[0002] The clinical application of microwave technology at home and abroad is becoming more and more extensive, especially in eliminating various inflammations, relieving patients' pain, and promoting blood circulation. Microwave therapy is an application of microwave technology. Since microwaves have certain radioactivity, the output power needs to be adjusted according to the patient's treatment needs when using microwave therapy for irradiation treatment. Too small a power value will affect the treatment effect, and too large a power value will cause local tissue burns in the patient. In addition, in order to regulate the development of microwave therapy and avoid interference with other communication bands, 433MHz, 915MHz and 2450MHz are specified as medical microwave frequencies. Therefore, the accuracy of the output power and frequency of the microwave therapy is a key parameter to measure the performance of the instrument. If the microwave therapy instrument has inaccurate output frequency, poor stability, excessive harmonic frequencies, etc., it will affect the treatment effect while also generating interference signals for the surrounding environment.

[0003] Therefore, the timing detection of microwave therapeutic apparatus is particularly important. In the related art, the detection method of microwave therapeutic apparatus usually uses different instruments to detect the frequency and power of microwave therapeutic apparatus respectively, which leads to the problems of long detection time or difficulty in carrying in the related art. Summary of the invention

[0004] In view of the above problems, the present disclosure provides a microwave therapeutic apparatus measurement system.

[0005] According to one aspect of the present disclosure, a microwave therapeutic instrument measurement system is provided, including: an attenuation module, the attenuation module is used to attenuate the received microwave signal to be measured to obtain a microwave attenuated signal, and is used to transmit the microwave attenuated signal to a power sensor module and a spectrum analysis module respectively; the power sensor module is connected to a first output end of the attenuation module, and is used to measure and obtain the signal power of the microwave attenuated signal; the spectrum analysis module is connected to a second output end of the attenuation module, and is used to obtain a spectrum diagram of the attenuated microwave signal based on the attenuated microwave signal; a processing module is communicatively connected to the power sensor module, and is used to obtain the signal power of the microwave signal to be measured based on the signal frequency of the microwave attenuated signal and the attenuation value of the attenuation module; and a display module is communicatively connected to the processing module, and is used to display the signal power and spectrum diagram of the microwave signal to be measured.

[0006] According to the microwave therapeutic apparatus measurement system disclosed in the present invention, the microwave signal to be measured is attenuated by the attenuation module to obtain the microwave attenuation signal, and the microwave attenuation signal is transmitted to the power module and the spectrum analysis module respectively, so that the microwave attenuation signal is measured by the power sensor module and the spectrum analysis module respectively to obtain the signal power and signal spectrum diagram of the microwave attenuation signal, and the signal power of the microwave signal to be measured is processed by the processing module to obtain the signal power of the microwave signal to be measured, and the signal power and spectrum diagram of the microwave signal to be measured are displayed by the display module. Since the microwave therapeutic apparatus measurement system integrated with the attenuation module, the power sensor module, the spectrum analysis module, the processing module and the display module can realize the measurement of the two parameters to be measured, namely, the signal power and the signal frequency of the microwave signal to be measured, the problem of the difficulty in carrying the microwave therapeutic apparatus measurement instrument in the related art is at least partially solved, and the technical effect of improving the portability of the measurement instrument is achieved. Since the microwave attenuation signal is transmitted to the power sensor module and the spectrum analysis module respectively, the parallel measurement of the signal power and the signal frequency of the microwave signal to be measured is realized, and the problem of the long detection time in the related art is at least partially solved, and the technical effect of improving the detection efficiency is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0008] Figure 1 The schematic diagram shows the principle structure of a microwave therapeutic apparatus in the related art;

[0009] Figure 2 The schematic diagram schematically shows the principle of measuring microwave signal power by using calorimetry in the related art;

[0010] Figure 3 The structure diagram of the microwave therapeutic apparatus measurement system according to the embodiment of the present disclosure is schematically shown;

[0011] Figure 4 A first schematic diagram of a microwave therapeutic apparatus measurement system according to an embodiment of the present disclosure is schematically shown;

[0012] Figure 5 A second schematic diagram of a microwave therapeutic apparatus measurement system according to an embodiment of the present disclosure is schematically shown;

[0013] Figure 6 A third schematic diagram schematically shows a microwave therapeutic apparatus measurement system according to an embodiment of the present disclosure;

[0014] Figure 7 A fourth schematic diagram schematically shows a microwave therapeutic apparatus measurement system according to an embodiment of the present disclosure;

[0015] FIG8( a ) schematically shows a schematic diagram of a thermocouple power sensor according to an embodiment of the present disclosure;

[0016] FIG8( b ) schematically shows an internal structure diagram of a thermocouple power sensor according to an embodiment of the present disclosure;

[0017] FIG9 (a) schematically shows a schematic diagram of the principle of measuring the signal power of a microwave signal to be measured according to an embodiment of the present disclosure;

[0018] FIG9( b ) schematically shows a schematic diagram of the principle of measuring the signal power of a microwave signal to be measured according to another embodiment of the present disclosure;

[0019] Fig.10 The schematic diagram schematically shows the principle of the spectrum analysis module according to the embodiment of the present disclosure;

[0020] Fig.11 The data flow diagram schematically shows the operation of the processing module and the display module according to the embodiment of the present disclosure.

[0021] Fig.12 A schematic diagram schematically shows a system main interface of a microwave therapeutic apparatus measurement system according to an embodiment of the present disclosure;

[0022] FIG. 13 ( a ) schematically shows a frequency spectrum diagram of a microwave therapeutic apparatus according to an embodiment of the present disclosure when the frequency output is normal; and

[0023] FIG13( b ) schematically shows a frequency spectrum diagram of a microwave therapeutic apparatus according to an embodiment of the present disclosure when the frequency output is abnormal. DETAILED DESCRIPTION

[0024] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0025] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise", "include", etc. used herein indicate the existence of features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0026] All terms (including technical and scientific terms) used herein 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.

[0027] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0028] Microwave is a high-frequency electromagnetic wave with a frequency of 300MHz to 300GHz and a wavelength of 1mm to 1m. It has the characteristics of strong penetration, strong anti-interference ability, and fast propagation speed. Microwave technology is increasingly widely used in clinical applications at home and abroad, especially in eliminating various inflammations, relieving patients' pain, and promoting blood circulation. It has shown unique therapeutic effects and has been widely recognized by the medical community. Microwave therapeutic devices use microwaves' good penetration and dielectric heating effects, and use microwave signal transmitters to generate microwave signals of a certain frequency to irradiate the affected area to achieve the effects of heating, sterilizing, and accelerating blood circulation, thereby achieving the purpose of treatment and rehabilitation. 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 relieve inflammation and pain; when the microwave amount is high, the heat generation is high, which can denature, coagulate, and necrotize proteins. At this time, microwaves have the effects of burning and cutting. The treatment method of using microwaves to irradiate patients is called microwave therapy. Since microwaves have certain radioactivity, the output power needs to be adjusted according to the patient's treatment needs when using microwave therapeutic devices for irradiation treatment. Too small a power value will affect the treatment effect, and too large a power value will cause local tissue burns in patients. 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 medical microwave frequencies. According to the attenuation characteristics of microwave propagation in human tissues, 433MHz and 915MHz microwaves have deeper tissue penetration than 2450MHz microwaves. However, due to registration costs and electromagnetic compatibility requirements, in addition to microwave thermal therapy, 2450MHz microwaves are currently used for treatment. Therefore, the accuracy of the output power and frequency of microwave therapeutic devices is a key parameter to measure the performance of the instrument. If the microwave therapeutic device has inaccurate output frequency, poor stability, excessive harmonic frequencies, etc., it will affect the treatment effect and generate interference signals for the surrounding environment. Therefore, regular measurement and maintenance according to the use of the instrument is of great significance to ensure medical quality and prevent adverse events.

[0029] Microwave therapeutic devices are mainly used in clinical departments such as gynecology, orthopedics, pediatrics, rehabilitation and physiotherapy, and operating rooms. In order to reduce the waiting time of patients as much as possible, accurate and fast microwave therapeutic device performance testing methods must be used for on-site testing to ensure that patients receive timely and effective treatment. At present, the testing methods commonly used by testing agencies are usually: one instrument detects the power of the microwave therapeutic device, and then another instrument detects the frequency of the microwave therapeutic device. There is a sequence in the use of the two instruments, or a larger instrument such as calorimetry is used to test the microwave therapeutic device. Therefore, 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, which brings many inconveniences to the maintenance and performance testing of microwave therapeutic devices during use.

[0030] Figure 1 The schematic diagram shows the principle structure of a microwave therapeutic apparatus in the related art.

[0031] like Figure 1 As shown in the figure, microwave therapeutic apparatus usually adopts a microwave therapeutic apparatus controlled by a magnetron and a microwave processing module, which is mainly composed of three parts: microwave generating circuit, control circuit and power supply circuit, including: main control transformer, filament transformer, host control unit, high-voltage transformer, magnetron and applicator. The core component of the microwave generating circuit is the magnetron, which is the microwave emission source, and is composed 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 is heated, and a DC anode high voltage is applied between the anode and the cathode. The electrons emitted by the cathode fly to the anode under the action of a strong magnetic field. There are multiple small resonant cavities on the anode. When the electrons hit the anode, they oscillate in these resonant cavities, generating high-frequency microwaves, converting the kinetic energy of the electrons into microwave energy. Microwave energy is coupled through a magnetic ring through a waveguide and a coaxial line, and is output from the radiator (antenna) to the treatment part of the human body. Since the anode high voltage is in a certain linear relationship with the microwave emission power of the magnetron, the microwave power can be accurately timed and quantitatively emitted by controlling the anode voltage value. Therefore, the magnetron and its voltage control system determine the operating frequency and output power of the microwave therapeutic instrument, and the performance of the magnetron directly determines the performance of the instrument. In the field of domestic microwave detection, microwave continuous wave power greater than 1W and less than 100W is usually called microwave medium power, and microwave power greater than 100W is called high power. With the development of microwave power measurement technology and instruments, the scope of microwave medium power is also developing. The frequency of microwave therapeutic instruments commonly used in medical institutions is 2450MHz, the continuous wave power used for physical therapy is up to 60W, and the pulse wave peak value used for treatment can reach 120W, which belongs to the category of microwave medium power, and the microwave medium power direct calorimetry measurement method, referred to as calorimetry, is a commonly used microwave medium power measurement method in industry.

[0032] Figure 2The schematic diagram schematically shows the principle of measuring microwave signal power by using calorimetry in the related art.

[0033] like Figure 2 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.

[0034] The principle of microwave power measurement by thermal method is the first law of thermodynamics, i.e., the law of conservation of energy. First, according to the principle of calorimetry, the measurement of microwave power value is converted into the measurement of heat of calorimetric medium, and then the measurement of heat of calorimetric medium is converted into the measurement of DC power through the principle of heat equivalence. It calculates the input microwave power by measuring the microwave conversion heat absorbed by the energy absorber. The instrument or device that uses calorimetry to measure microwave medium power can be called microwave medium power calorimeter. According to the shape of the energy absorber, medium power calorimeter can be divided into two categories: dry load calorimeter and flow calorimeter. In recent years, the coolant flow type microwave medium power calorimetric measurement method based on dry load has been deeply studied and applied abroad. The RF microwave dry load generates heat after absorbing microwave power. The coolant flows through the heat-conducting surface of the RF microwave dry load and absorbs the heat of the load and then heats up. The temperature difference at the inlet and outlet of the heat-conducting surface cavity coolant flow and the flow size of the liquid are accurately measured by temperature and flow sensors respectively to calculate the heat absorbed by the coolant, thereby obtaining the measured input microwave power. Flow calorimeters often use liquids such as water, oil, alcohol or mixed liquids as energy absorbers. The liquid can be static or flowing. The flow calorimeter measures the changes in temperature, volume and other characteristics of the liquid after it absorbs heat to obtain the input microwave power. High-power microwaves are radiated to the liquid in the calorimeter through metal waveguides, such as alcohol. After the alcohol absorbs power, its temperature rises and its volume expands. The alcohol level in the capillary capacitor will rise. By measuring the temperature change or volume expansion of the alcohol, the microwave power absorbed by the alcohol can be calculated. The expansion of the alcohol can be obtained by detecting the capacitance change of the capillary capacitor. The system structure is as follows: Figure 4 shown.

[0035] The calorimetric method 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 the calorimetric method are usually large in size and need to be tested in a fixed location, which is not convenient for on-site testing.

[0036] In view of this, an embodiment of the present disclosure provides a microwave therapeutic instrument measurement system, characterized in that it includes: an attenuation module, the attenuation module is used to attenuate the received microwave signal to be measured to obtain a microwave attenuated signal, and is used to transmit the microwave attenuated signal to a power sensor module and a spectrum analysis module respectively; a power sensor module, connected to a first output end of the attenuation module, and used to measure and obtain the signal power of the microwave attenuated signal; a spectrum analysis module, connected to a second output end of the attenuation module, and used to obtain a spectrum diagram of the attenuated microwave signal based on the attenuated microwave signal; a processing module, communicatively connected to the power sensor module, and used to obtain the signal power of the microwave signal to be measured based on the signal frequency of the microwave attenuation signal and the attenuation value of the attenuation module; and a display module, communicatively connected to the processing module, and used to display the signal power and spectrum diagram of the microwave signal to be measured.

[0037] The following will be passed Figure 3~Figure 1 3(b) describes in detail the microwave therapeutic apparatus measurement system of the disclosed embodiment.

[0038] Figure 3 The structure diagram of the microwave therapeutic apparatus measurement system according to the embodiment of the present disclosure is schematically shown.

[0039] like Figure 3 As shown, the system comprises: an attenuation module (1), a power sensor module (2), a spectrum analysis module (3), a processing module (4) and a display module (5).

[0040] An attenuation module (1) is used to attenuate a received microwave signal to be measured to obtain a microwave attenuation signal, and to transmit the microwave attenuation signal to the power sensor module (2) and the spectrum analysis module (3) respectively.

[0041] The power sensor module (2) is connected to the first output end of the attenuation module (1) and is used to measure the signal power of the microwave attenuation signal.

[0042] The spectrum analysis module (3) is connected to the second output end of the attenuation module (1) and is used to obtain a spectrum diagram of the attenuated microwave signal based on the attenuated microwave signal.

[0043] The processing module (4) is connected in communication with the power sensor module (2) and is used to obtain the signal power of the microwave signal to be measured based on the signal frequency of the microwave attenuation signal and the attenuation value of the attenuation module (1).

[0044] The display module (5) is in communication with the processing module (4) and is used to display the signal power and spectrum diagram of the microwave signal to be measured.

[0045] According to an embodiment of the present disclosure, the microwave signal to be tested may be a signal sent by a microwave therapeutic apparatus.

[0046] According to an embodiment of the present disclosure, the processing module (4) may be hardware or a computer program capable of processing data or instructions, and may be obtained by programming using a target programming language, and the target programming language may be C language.

[0047] According to an embodiment of the present disclosure, the attenuation module (1) attenuates the signal power of the microwave signal to be measured.

[0048] According to an embodiment of the present disclosure, the power sensor module (2) can be communicatively connected to the processing module (4) via a Universal Serial Bus (USB) interface, and the spectrum analysis module (3) can be communicatively connected to the processing module (4) via a serial port.

[0049] According to an embodiment of the present disclosure, the frequency of the microwave signal to be measured can be obtained through the above-mentioned spectrum diagram.

[0050] According to an embodiment of the present disclosure, the processing module (4) may store an attenuation value corresponding to the attenuation module (1), and the attenuation value is related to the inherent properties of the attenuator included in the attenuation module (1).

[0051] According to an embodiment of the present disclosure, the following formulas (1) to (3) may be built into the processing module (4) so ​​as to obtain the signal power of the microwave signal to be measured by using the signal frequency of the microwave attenuation signal and the attenuation value of the attenuation module (1) according to the following formula. In some embodiments, only formula (3) may be built into the processing module (4).

[0052] ; (1)

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

[0054] According to an embodiment of the present disclosure, the input power P in , output power P out Convert the units according to Formula 2.

[0055] ; (2)

[0056] Wherein, P represents the microwave power, the unit is W, and dBm represents the measurement value of the power sensor module (2).

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

[0058] ; (3)

[0059] Figure 4 A first schematic diagram of a microwave therapeutic apparatus measurement system according to an embodiment of the present disclosure is schematically shown; Figure 5 A second schematic diagram of a microwave therapeutic apparatus measurement system according to an embodiment of the present disclosure is schematically shown; Figure 6 A third schematic diagram of a microwave therapeutic apparatus measurement system according to an embodiment of the present disclosure is schematically shown.

[0060] like Figure 4 As shown, the microwave therapeutic apparatus measurement system further comprises: a lower box (6) and an upper box (7).

[0061] The lower box body (6) has a receiving space formed therein, wherein the attenuation module (1), the power sensor module (2) and the spectrum analysis module (3) are all installed in the receiving space.

[0062] The upper box body (7) is installed on the lower box body (6) in an openable and closable manner, and is used to install the processing module (4) and the display module (5).

[0063] According to an embodiment of the present disclosure, there is also a storage space inside the upper box body (7), the processing module (4) is installed between the bottom surface of the storage space inside the upper box body (7) and the display module (5), and the display module (5) is installed in the contact direction between the upper box body (7) and the lower box body (6).

[0064] According to an embodiment of the present disclosure, the attenuation module (1) is mounted on the bottom surface of the lower box (6), the power sensor module (2) is mounted on the bottom surface at an interval from the attenuation module (1), and the spectrum analysis module (3) is mounted on the bottom surface at an interval from the attenuation module (1) and the power sensor module (2).

[0065] According to an embodiment of the present disclosure, by installing the attenuation module (1), the power sensor module (2), the spectrum analysis module (3), the processing module (4) and the display module (5) in one box, it is possible to make the use of the microwave therapeutic device measurement system more convenient. Moreover, by installing in the manner of the present disclosure, the installation position of each component is reasonable and space is saved, thereby reducing the overall size of the system and facilitating use in various scenarios.

[0066] like Figure 4 As shown, the attenuation module (1) comprises an attenuator (11) and a coupler (12).

[0067] The attenuator (11) is used to receive the microwave signal to be measured and attenuate the microwave signal to be measured to obtain a microwave attenuated signal.

[0068] A coupler (12), wherein an input end of the coupler (12) is connected to an output end of the attenuator (11), a first output end of the coupler (12) is connected to a power sensor module (2), and a second output end of the coupler (12) is connected to a spectrum analysis module (3); the coupler (11) is used to transmit a microwave attenuation signal to the power sensor module (2) and the spectrum analysis module (3), respectively.

[0069] According to an embodiment of the present disclosure, the first output end of the attenuation module (1) is the first output end of the coupler (12), and the second output end of the attenuation module (1) is the second output end of the coupler.

[0070] According to the embodiments of the present disclosure, there is no limitation on the selection of attenuators, and the selection can be made based on the performance and volume of the attenuator in combination with actual needs. For example, a 253-40-33 attenuator produced by API-Weinschel is selected. The attenuation value and uncertainty of the attenuator when measuring different frequencies are shown in Table 1 below.

[0071] Table 1

[0072]

[0073] According to an embodiment of the present disclosure, the signal power of the microwave attenuation signal output from the first output end of the coupler is substantially the same as the signal power of the microwave attenuation signal output from the attenuator, and the signal power of the microwave attenuation signal output from the second output end is relatively small, much smaller than the signal power of the microwave attenuation signal output from the first output end. By connecting the coupler after the attenuator, the microwave attenuation signal can be transmitted in parallel to the power sensor module (2) and the spectrum analysis module (3) without affecting the measurement accuracy of the power sensor module (2) for the microwave attenuation signal power.

[0074] like Figure 4~Figure 6 As shown, the microwave therapeutic device measurement system also includes a cooling module (8).

[0075] The cooling module (8) is used to dissipate heat from the attenuator and the surrounding environment of the attenuator, so as to reduce the surface temperature of the attenuator and the temperature of the surrounding environment of the attenuator.

[0076] like Figure 4~Figure 6 As shown, the cooling module (8) comprises a radiator (81), an air inlet fan (82) and an air outlet fan (83).

[0077] The heat sink (81) is installed between the attenuator and the bottom surface of the accommodation space along the length direction of the attenuator to dissipate heat from the attenuator and the surrounding environment of the attenuator.

[0078] An air intake fan (82) is installed at one end of the radiator.

[0079] The air outlet fan (83) is installed at the end of the radiator opposite to the installation position of the air inlet fan, and is suitable for cooperating with the air inlet fan to remove the heat emitted by the radiator.

[0080] According to an embodiment of the present disclosure, an air inlet (61) and an air outlet (61) are respectively provided at both ends of the lower box body (6) along the length direction; an air inlet fan (81) is installed at one end of the radiator close to the air inlet; and an air outlet fan (82) 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.

[0081] like Figure 4~Figure 6 As shown, the microwave therapeutic apparatus measurement system further comprises a power supply module (9); the power supply module (9) comprises: a socket (91) and an adapter (92).

[0082] A socket (91) adapted to receive a first power source provided by an external power supply unit;

[0083] The adapter (92) is installed in the accommodation space and supported below the power sensor by a support member. The adapter is suitable for converting a first power supply from the socket to obtain a second power supply matching the spectrum analysis module (3), so as to use the second power supply to power the spectrum analysis module (3).

[0084] According to an embodiment of the present disclosure, a first opening can be opened on a side wall of the lower box (6), and a socket can be installed on the first opening, suitable for receiving a first power source. The adapter is installed at the bottom of the accommodating space of the lower box (6), and the power sensor is installed above the adapter through a support member.

[0085] like Figure 4~Figure 6 As shown, the power supply module (9) further includes an expansion unit (93) installed in the accommodation space and suitable for establishing communication between the power sensor module (2), the spectrum analysis module (3) and the processing module (4) or establishing a communication connection between the power sensor module (2) or the spectrum analysis module (3) and the display module (5).

[0086] According to an embodiment of the present disclosure, the power supply module (9) further comprises a switch (94) mounted on the outer wall of the lower case (6), adapted to allow or prevent the first power supply from being input to the processing module (4), the display module (5) and the adapter (92).

[0087] According to the embodiments of the present disclosure, considering that the detection location of the microwave therapeutic apparatus is usually the treatment room, ward, operating room, etc. of the hospital, the construction of the detection device should be portable and safe while ensuring the realization of the measurement function. The present disclosure measures the power of the microwave signal to be measured output by the microwave therapeutic apparatus by combining a coupler (12), an attenuator (11), and a power sensor module (2). Compared with the method of measuring power by the calorimetric method in the related art, the power measurement method adopted by the present disclosure uses an instrument that is smaller and easier to carry. The whole set of the device of the present disclosure is composed of an attenuation module (1), a power sensor module (2), a microwave spectrum analysis module (3), a processing module (4), and a display module (5), integrating the functions of a spectrum analyzer, a microwave power meter, a microwave sensor, an attenuator, etc., which 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.

[0088] Figure 7 A fourth schematic diagram of a microwave therapeutic apparatus measurement system according to an embodiment of the present disclosure is schematically shown.

[0089] like Figure 7 As shown, the lower box body (6) further comprises a main body (63) and a cover body (64), wherein the main body (63) and the cover body (64) are mounted on the main body (63) and are adapted to cooperate with the main body (63) to form a receiving space; wherein a receiving cavity is formed between the upper box body (7) and the cover body, and the receiving cavity is adapted to receive an input unit (10) for performing input operations on the display module (5).

[0090] According to an embodiment of the present disclosure, the input unit may include a device capable of inputting information, such as a keyboard and a mouse.

[0091] According to an embodiment of the present disclosure, by adding a cover body and an input unit, the target object can input various information more easily when normally using the microwave therapeutic device measurement system to measure the microwave therapeutic device, making the system more convenient to use and carry.

[0092] According to an embodiment of the present disclosure, the processing module (4) is also used to communicate with the spectrum analysis module (3), and to intercept the spectrum diagram based on the reference frequency and frequency span sent by the display module (5) to obtain a target spectrum diagram corresponding to the reference frequency and frequency span; wherein the display module (5) is also used to display the target spectrum diagram.

[0093] According to an embodiment of the present disclosure, the display module (5) receives a reference frequency and a frequency span input by a target object, and the target object may be a user using the microwave therapeutic apparatus measurement system.

[0094] According to an embodiment of the present disclosure, the reference frequency can be the center frequency of the microwave therapeutic device to be tested, and the frequency span can be used to determine the frequency range centered on the center frequency. 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 taken as the frequency detection result.

[0095] According to an embodiment of the present disclosure, the spectrum diagram can be intercepted by the center frequency and the span into a target spectrum diagram whose frequency range is determined according to the frequency span and the reference frequency, so that it can be intuitively determined whether the frequency of the microwave therapeutic apparatus meets the requirements.

[0096] According to an embodiment of the present disclosure, the processing module (4) is further 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 (5); wherein the display module (5) is further used to display the alarm message after receiving the alarm message.

[0097] According to an embodiment of the present disclosure, the preset power range can be determined based on the normal power of the microwave therapy 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%, and the preset power range is [57W, 63W].

[0098] According to an embodiment of the present disclosure, the preset frequency range can be determined by the reference frequency and the preset frequency floating amount, and the preset frequency floating amount can be an acceptable normal floating amount, for example: the reference frequency is 1000MHz, the preset floating amount is 5%, and the preset power range is [995W, 1050W].

[0099] According to an embodiment of the present disclosure, when it is determined that the signal power of the microwave signal to be tested is not within a preset power range, or the center frequency in the target spectrum diagram is not within a preset frequency range, an alarm message can be generated and displayed through the display module (5) to indicate that there is an abnormality in the microwave therapeutic device.

[0100] According to an embodiment of the present disclosure, the processing module (4) is further used to receive a control instruction sent by the display module (5), and based on the control instruction, control the reception and processing of the signal frequency and spectrum diagram of the attenuated microwave signal.

[0101] According to an embodiment of the present disclosure, 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.

[0102] According to an embodiment of the present disclosure, the start instruction may also 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 also include an instruction to stop intercepting the spectrum diagram to obtain the target spectrum diagram.

[0103] According to an embodiment of the present disclosure, the control instruction is not limited and may also include an instruction for a microwave therapeutic apparatus detection system to start or stop measuring the microwave therapeutic apparatus to be tested.

[0104] According to an embodiment of the present disclosure, the control instruction of the display module (5) 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 (5). When the target object clicks the button corresponding to the start instruction or the button corresponding to the stop instruction, the display module (5) sends the control instruction corresponding to the button.

[0105] According to an embodiment of the present disclosure, by providing a control instruction button on the display module (5), the data processing and receiving process of the system can be more conveniently controlled.

[0106] According to an embodiment of the present disclosure, the power sensor module (2) comprises a thermocouple power sensor.

[0107] According to the embodiments of the present disclosure, in the process of measuring medical microwave power, we hope that the power sensor has a wide dynamic range, low drift and small standing wave ratio, and can accommodate a wider frequency range. Therefore, a thermocouple power sensor can be selected to implement the power sensor module (2).

[0108] According to the embodiments of the present disclosure, there is no limitation on the specific parameters of the thermocouple power sensor. For example, through calibration, it is obtained that within the frequency range of 300MHz to 2000MHz, the calibration factor is 100.1%, and the expanded uncertainty is U=0.9% (k=2); within the frequency range of 2000MHz to 5000MHz, the calibration factor is 100.1%, and the expanded uncertainty is U=1.0% (k=2). The thermocouple power sensor can fully meet the detection requirements of medical microwaves.

[0109] FIG8( a ) schematically shows a simplified principle diagram of a thermocouple power sensor according to an embodiment of the present disclosure.

[0110] As shown in FIG8( a ), the schematic diagram includes capacitor C, capacitor B, two dissimilar conductors having a hot junction and a cold junction, the dissimilar conductors having a thermocouple film, and connected to a DC voltmeter.

[0111] According to an embodiment of the present disclosure, the working principle of the thermocouple power sensor is that the connection of two dissimilar conductors forms a pair of thermocouple junctions, and any temperature gradient existing at both ends of 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 external power. The temperature rise of the resistor forms a temperature gradient at both ends of the attached thermocouple junction, thereby generating a voltage proportional to the power. Two groups of such structures can actually be oriented in such a way that the temperature rise generated by the power dissipated by the resistor causes the two thermocouple structures to generate an added temperature difference voltage, while the temperature gradient generated by the change in ambient temperature causes a temperature difference voltage that cancels 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.

[0112] According to an embodiment of the present disclosure, 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 precision geometry required to operate at frequencies exceeding 40 GHz.

[0113] FIG8( b ) schematically shows an internal structure diagram of a thermocouple power sensor according to an embodiment of the present disclosure.

[0114] As shown in FIG8( b ), the thermocouple power sensor may include a thermocouple, a DC chopper, an input amplifier, an amplifier and an attenuator, a synchronous detector, a DC amplifier, an analog / digital conversion module, and the like.

[0115] According to an embodiment of the present disclosure, the software control module may be a processing module (4), and the processing module (4) implements detection control of the attenuated microwave signal by the thermocouple power sensor through control instructions sent by the display module (5), such as: starting or pausing detection control, and zero point calibration control.

[0116] According to an embodiment of the present disclosure, the software control module may also be a part included in the thermocouple power sensor circuit. By enabling the processing module (4) and the software control module to be communicatively connected, when the processing module (4) receives a control instruction sent by the display module (5), the control instruction is sent to the software control module to achieve control of the thermocouple power sensor.

[0117] According to an embodiment of the present disclosure, the sensitivity of a thermocouple element can be described by the magnitude of its DC output voltage relative to the magnitude of the RF power dissipated by the sensor. Typical sensitivity is about 160uV / mW, and power levels as low as 1.0uW can be measured with this type of sensor. The DC voltage that must be measured may be as low as 0.16uV, so the amplifiers inside the thermocouple power sensor must provide high gain, and importantly, these amplifiers cannot add to or subtract any additional DC bias from the microvolt voltage to be measured. A chopped input amplifier, that is, a DC chopper, an input amplifier, an amplifier and attenuator, and a synchronous detector combination can meet this requirement. The DC chopper operates with a square wave drive signal, and the input capacitor of the AC coupling amplifier is connected to the output of the sensor or to ground. The input capacitor is charged by the DC input voltage and discharged by ground, so the input signal to the input amplifier becomes a square wave with an amplitude proportional to the sensor output.

[0118] The AC coupled amplifier is an amplifier and attenuator with a high enough gain to produce an output square wave of several volts and does not contain the bias voltage. The synchronous detector relies on another switch that works with the same signal as the DC chopper, which connects the amplifier output to the RC (resistor) filter or connects the filter input to ground. Since the output switching is synchronized with the input DC chopper, the filter capacitor is charged with the same half cycle of the square wave generated by the input DC voltage. The output of the filter is a DC voltage that is easy to process and display. Most thermocouple power meters provide a precision reference source with calibrated output power to adjust the gain of the system to compensate for the sensitivity changes between different elements of the thermocouple. Whenever a different sensor is connected to the thermocouple power sensor, this adjustment can be as simple as connecting the sensor to the reference source and starting the corresponding function.

[0119] According to an embodiment of the present disclosure, in this embodiment, by cascading an attenuator and a coupler, the signal power of the microwave signal to be measured is coupled to a range that can be measured by the power sensor module (2), and then the signal power of the microwave signal to be measured is obtained according to the known attenuation value. The implementation method can be called a coupling attenuation method.

[0120] According to the embodiments of the present disclosure, in some embodiments, it is also possible to obtain the signal power of the microwave signal to be measured by only cascading a coupler or only cascading an attenuator with a power sensor module (2). This method can also be called a coupled attenuation method, as specifically shown in FIG. 9 (a) to FIG. 9 (b).

[0121] FIG9( a ) schematically shows a schematic diagram of the principle of measuring the signal power of a microwave signal to be measured according to an embodiment of the present disclosure.

[0122] According to an embodiment of the present disclosure, 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 may be the power sensor module (2) in the present disclosure, and specifically may be a thermocouple power sensor.

[0123] FIG9( b ) schematically shows a schematic diagram of the principle of measuring the signal power of a microwave signal to be measured according to another embodiment of the present disclosure.

[0124] As shown in FIG9( b ), the microwave signal to be measured is input into the directional coupler, and the directional coupler is connected to the load and the microwave low power meter respectively, so as to obtain the signal power of the microwave signal to be measured.

[0125] According to the embodiments of the present disclosure, the measurement technology of microwave low power is relatively mature, the measurement method and measurement equipment are relatively complete, and the measurement accuracy is relatively high. Many countries have established microwave low power standard devices based on low power calorimeters or microcalorimeters, and the measurement uncertainty reaches 0.2%. Therefore, using a microwave low power meter or a low power measurement device to construct a power test device for the microwave signal to be measured using the coupling attenuation method can have high accuracy and good traceability. And because the attenuator and the coupler are both passive devices, the performance is stable after the measurement link is built, and it has better measurement reliability.

[0126] Fig.10 The schematic diagram schematically shows the principle of the spectrum analysis module according to the embodiment of the present disclosure.

[0127] like Fig.10 As shown, the spectrum analysis module (3) 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 analysis module (3) 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 sweep frequency generator, and a crystal oscillator unit.

[0128] According to the embodiment of the present disclosure, the basic working principle of the spectrum analysis module (3) is that the input signal is added to the mixer through the attenuator, and after mixing with the local oscillator signal provided by the adjustable sweep frequency local oscillator circuit, the intermediate frequency signal is obtained, which is then amplified, filtered and detected, and the AC signal and various modulated signals are converted into a DC signal with a certain regular change for display. Among them, the input attenuator is in 10dB steps, and its main purpose is to expand the spectrum measurement range, effectively prevent the signal from being too large and damaging the components in the instrument, so that the mixer is in the linear region for the measured signal, so that the attenuated microwave signal and the spectrum measurement module are well matched, and then the signal passes through the low-pass filter to filter out the undesirable high-frequency components outside the frequency range of the spectrum analysis module (3), and is sent to the mixer to mix with the local oscillator signal generated by the local oscillator to generate an intermediate frequency signal, so as to facilitate the next level of signal processing.

[0129] According to the embodiments of the present disclosure, since microwave radio frequency signals are mixed, there are intermodulation and interference signals. Therefore, in order to accurately distinguish the intermediate frequency signal, an intermediate frequency filter is used to separate signals with very close frequency intervals and suppress other signals outside the intermediate frequency signal. The intermediate frequency filter is a key component in spectrum analysis. The spectrum analysis module (3) mainly relies on this filter to distinguish signals of different frequencies. Many key indicators of the spectrum analyzer (measurement resolution, measurement sensitivity, measurement speed, measurement accuracy, etc.) are related to the bandwidth and shape of the intermediate frequency filter. The variable gain circuit and attenuator of the intermediate frequency circuit part are controlled together by a single chip microcomputer. The total gain of the spectrum analysis is changed according to the amplitude of the input signal. The range of its variation determines the range of the reference level. The logarithmic amplifier circuit determines the display dynamic range of the spectrum analysis and its gain grading adjustment.

[0130] According to the embodiment of the present disclosure, the spectrum analysis module (3) also has a built-in digital LCD screen, which can not only display the spectrum diagram through the display module (5), but also view it using the built-in digital LCD screen of the spectrum analysis module (3). Since the display of data can only be described by discrete pixel points, an envelope detector is also used to detect the signal output by the logarithmic amplifier, that is, to divide the actual signal into multiple segments, and then use a certain algorithm to obtain a point to represent the value corresponding to this pixel point, and finally display these pixel values ​​on the screen. The detection methods in the envelope detector can mainly include: maximum peak detection, that is, selecting the maximum value in the corresponding segment, minimum peak detection, that is, selecting the minimum value therein, sampling detection, that is, selecting the value at a specific position, root mean square detection, that is, taking the value after the root mean square (RMS) operation of the point in the corresponding segment, and average value detector, that is, taking the average value of the midpoint of the corresponding segment.

[0131] According to the embodiment of the present disclosure, the detection envelope signal after detection will enter the video filter, which is a low-pass filter, and its main function is to smooth the noise display. The noise of the spectrum display can be smoothed by reducing the video bandwidth, which is very helpful for the display of small signals.

[0132] According to an embodiment of the present disclosure, the output waveform of the spectrum analysis module (3) is an XY trace on the screen, which is displayed mapped on a dial consisting of 10 horizontal grids and 10 vertical grids. The horizontal axis represents the frequency, and its scale value increases linearly from left to right. The frequency setting is usually divided into two steps: first, the frequency is adjusted to the center line of the dial through the center frequency control, and then the frequency range (span width) across the 10 grids is adjusted through the frequency span control. These two controls are independent of each other, so when the center frequency is changed, the span width does not change. Alternatively, the method of setting the start frequency and the end frequency can be used instead of the method of setting the center frequency and the span width. The absolute frequency of the microwave signal to be measured and the relative frequency difference between any two signals can be determined through the spectrum diagram.

[0133] According to the embodiment of the present disclosure, the vertical axis scale is divided according to the amplitude size. A linear scale calibrated by voltage or a logarithmic scale calibrated by decibel can be selected. The logarithmic scale can reflect a larger range of values ​​than the linear scale. The logarithmic scale can simultaneously display signals with an amplitude difference of 70 to 100 dB (voltage ratio of 3200 to 100000 or power ratio of 10000000 to 10,000,000,000), while the linear scale can only be used for signals with an amplitude difference of no more than 20 to 30 dB (voltage ratio of 10 to 32). For both of the above situations, calibration technology can be used to give the absolute value of the level of the highest row on the dial, that is, the reference level, and the values ​​of other positions on the dial can be determined according to the ratio corresponding to each small grid. As a result, the absolute value of the signal can be measured through the spectrum diagram, and the relative amplitude difference between any two signals can also be measured, and the scale values ​​of the frequency and amplitude will be annotated on the screen.

[0134] According to an embodiment of the present disclosure, the spectrum analysis module (3) 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 10 dBm after attenuation, otherwise the line will be damaged. The signal is waveform-drawn by the spectrum analysis module (3) and connected to the processing module (4) and the display module (5) via a USB port, thereby realizing center frequency control and data transmission.

[0135] According to an embodiment of the present disclosure, a microwave therapeutic apparatus measurement system is mainly composed of an attenuator (11), a power sensor module (2), a spectrum analysis module (3) and a heat dissipation system. The system structure is as follows: Figure 6As shown, the output port of the microwave therapeutic device is connected to the input port of the box, i.e., the attenuator input port, through a high-frequency coaxial cable. After the signal passes through the attenuator, it is sent to the power sensor module (2) and the spectrum analysis module (3) through a coupler. In the spectrum analysis module (3), it is calculated, cached, image plotted, and AD converted by the built-in single-chip system, and then sent to the processing module (4) for processing, and displayed by the display module (5). The U8480 series thermocouple power sensor used in the power sensor module (2) has an operating environment temperature of 0 to 55°C. When 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 module (2), but may also cause the circuit to burn, causing personal injury and equipment damage. Therefore, the system has a built-in heat dissipation module composed of components such as a heat sink and a fan 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. The overall size of the device is 44.2cm×34.1cm×21.8cm. The box is equipped with a handle for easy carrying, and it can quickly and accurately measure power and frequency.

[0136] According to the embodiment of the present disclosure, the signal receiving and processing of the spectrum analysis module (3) uses the STM32F405 chip as a microcontroller to realize functions such as signal AD conversion, spectrum calculation, image plotting and serial communication. The power sensor module (2) is embedded with functions such as power calculation, AD conversion and data communication, and is connected to the processing module (4) and the display module (5) via a USB interface. After installing the software driver, communication is carried out. The processing module (4) can be programmed in C language to read the spectrum output waveform and frequency value of the spectrum analysis module (3), realize the frequency selection function, sensor calibration and zeroing, power display, and give the actual power output value of the microwave therapeutic device through the known attenuation value of the attenuator.

[0137] According to an embodiment of the present disclosure, a microwave therapeutic apparatus measurement system may include an industrial all-in-one machine, in which upper computer software is installed. Specifically, the industrial all-in-one machine may be composed of a processing module (4) and a display module (5). The upper computer software implements calculation and control through the processing module (4), and the upper computer software implements interface display and user input of the upper computer software through the display module (5).

[0138] According to an embodiment of the present disclosure, the host computer software can run on a Windows 10-64bits operating system, has a human-computer interaction interface, and uses a display module (5) for display. The host computer software communicates with the spectrum analysis module (3) via a serial port and communicates with the power sensor module (2) via a USB. The USB communication-related technology is used for connecting and communicating with the power sensor, and the serial port communication technology is used for communicating with the spectrum analysis module (3). The interface displays the measurement data in real time, and uses multi-threading technology so that the interface refresh will not affect other operations of the software.

[0139] According to the embodiments of the present disclosure, the main workflow for the target object to determine the power and frequency of the microwave signal to be tested using the host computer software is as follows: double-click to run the microwave therapy 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, and the power can be displayed in real time; click to stop, 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.

[0140] Fig.11 The data flow diagram schematically shows the operation of the processing module and the display module according to the embodiment of the present disclosure.

[0141] like Fig.11 As shown, in response to the display module receiving a double-click operation of the target object on the software icon corresponding to the upper machine software through the input unit, a start instruction is sent to the processing module, and the upper machine software is started by the processing module 1101, and a login interface 1102 of the microwave therapeutic instrument measurement system is displayed on the display module; in response to the display module receiving the user name and password input by the target object 1103, 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 1104, and the user name and password library stores multiple user names and passwords corresponding to the user names; if correct, the system main interface 1105 is called by the processing module and displayed by the display module; the processing module is connected to the power sensor Module 1106, when the power sensor module is successfully connected and the start receiving button of the display interface is clicked by the target object, sends a start instruction 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 1107 of the microwave signal to be measured, sends it to the display module for real-time display, and the reference frequency and frequency span can be set; the processing module connects to the spectrum analysis module 1108 through the communication serial port set by the target object on the display module, receives the spectrum diagram 1109 in real time, and displays it on the display module, and in response to the stop button of the display interface being clicked by the target object, sends a stop instruction to the processing module to stop obtaining the signal power of the attenuated microwave signal, and the display module stops displaying the power.

[0142] Fig.12 A schematic diagram of the system main interface of the microwave therapeutic apparatus measurement system according to an embodiment of the present disclosure is schematically shown.

[0143] like Fig.12 As shown, the main interface of the system in some embodiments may include: an input box for serial communication parameters, a connection button, automatic test, maximum test value, log display, spectrum graph, spectrum graph setting and other partitions, wherein the automatic test partition includes the therapeutic instrument frequency, that is, the normal output frequency, attenuation value, power measurement value, and output power of the microwave therapeutic instrument to be tested, that is, the signal power of the microwave signal to be tested obtained after measurement; the log display partition includes buttons such as send, receive, clear, and a log display area; the spectrum graph setting includes setting buttons such as frequency, amplitude, setting, file, and about, and the corresponding setting interface can be entered by clicking the setting button, as well as the spectrum graph display area, and the spectrum graph display area also includes the start (Start) frequency, center (Center) frequency, cutoff (Stop) frequency, frequency span (Span), resolution bandwidth (RBW), frequency sweep width (SWP) and other data displays of the spectrum graph, and the reference frequency (Ref), floating range (Att), scale (Scale) and other data displays are also included on the left side of the spectrum graph.

[0144] FIG13( a ) schematically shows a frequency spectrum diagram of a microwave therapeutic apparatus according to an embodiment of the present disclosure when the frequency output is normal; FIG13( b ) schematically shows a frequency spectrum diagram of a microwave therapeutic apparatus according to an embodiment of the present disclosure when the frequency output is abnormal.

[0145] According to the embodiments of the present disclosure, the microwave power, frequency and phase of the microwave output of the microwave therapeutic apparatus based on the magnetron technology are unstable due to the instability of the working voltage and other factors. They are constantly jumping over time. The frequency and power of the microwave output by the magnetron obey the Gaussian distribution in probability. For example, the microwave frequency output by the 2.45GHz magnetron in reality is a frequency that randomly changes within a certain frequency band with 2.45GHz or a frequency around it as the center frequency point and obeys the Gaussian distribution. 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 0° to 360°, and the random power obeys a normal distribution with a mean of 1000 and a standard deviation of 25, as shown in Figure 13 (a). The frequency spectrum of the microwave therapeutic apparatus magnetron when the output is unstable can be shown in Figure 13 (b).

[0146] According to the embodiments of the present disclosure, the present disclosure verifies the feasibility of the calibration device by comparing the test data of the microwave therapeutic apparatus measurement system with the respective measurement data of the E4419B power meter, the E9034A power probe, the 40dB attenuator, the spectrum analyzer, etc. In order to verify the measurement function of the microwave therapeutic apparatus measurement system, the present disclosure selected the power values ​​of typical medical microwave therapeutic apparatuses in different working modes and conducted experimental verification work. Table 2 shows the power measurement results of the microwave therapeutic apparatus measurement system of the present disclosure, Table 3 shows the power measurement results of power detection devices such as the E4419B power meter and the E9034A power probe in the related art, Table 4 shows the comparison results of the power measurement results of the present disclosure and the related art, and Table 5 shows the frequency comparison results.

[0147] Table 2

[0148]

[0149] Table 3

[0150]

[0151] Table 4

[0152]

[0153] By comparing the measurement results with the detection devices in the related technology which 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, which means 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, which means that the measurement results are relatively stable and can be applied to power output detection of microwave therapeutic devices.

[0154] Table 5

[0155]

[0156] By comparing the power measurement results of the microwave therapeutic device measurement system disclosed in 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.

[0157] According to the embodiments of the present disclosure, the entire detection system consists of four parts: an attenuator, a microwave power sensor, a spectrum measurement module, and an industrial all-in-one machine, which can accurately measure 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 analysis module, 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.

[0158] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0159] It will be appreciated by those skilled in the art that the features described in the various embodiments of the present disclosure may be combined and / or combined in a variety of ways, even if such combinations or combinations are not explicitly described in the present disclosure. In particular, without departing from the spirit and teachings of the present disclosure, the features described in the various embodiments of the present disclosure may be combined and / or combined in a variety of ways. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0160] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A microwave therapeutic apparatus measurement system, characterized in that: include: An attenuation module, the attenuation module is used to attenuate the received microwave signal to be measured to obtain a microwave attenuation signal, and is used to transmit the microwave attenuation signal to the power sensor module and the spectrum analysis module respectively; The power sensor module is connected to the first output end of the attenuation module and is used to measure the signal power of the microwave attenuation signal; The spectrum analysis module is connected to the second output end of the attenuation module, and is used to obtain a spectrum diagram of the attenuated microwave signal based on the attenuated microwave signal; a processing module, which is in communication with the power sensor module and is used to obtain the signal power of the microwave signal to be measured based on the signal frequency of the microwave attenuation signal and the attenuation value of the attenuation module; as well as The display module is connected to the processing module for displaying the signal power of the microwave signal to be measured and the spectrum diagram.

2. The microwave therapeutic apparatus measurement system according to claim 1, characterized in that: The microwave therapeutic apparatus measurement system further comprises: A lower box body, with a receiving space formed inside; and An upper box body, which can be opened and closed and installed on the lower box body, and is used for installing the processing module and the display module; Wherein, the attenuation module, the power sensor module and the spectrum analysis module are all installed in the accommodating space.

3. The microwave therapeutic apparatus measurement system according to claim 2, characterized in that: The attenuation module comprises: an attenuator, used for receiving the microwave signal to be measured, and attenuating the microwave signal to be measured to obtain the microwave attenuated signal; and A coupler, wherein the input end of the coupler is connected to the output end of the attenuator, the first output end of the coupler is connected to the power sensor module, and the second output end of the coupler is connected to the spectrum analysis module, and the coupler is used to transmit the microwave attenuation signal to the power sensor module and the spectrum analysis module respectively.

4. The microwave therapeutic apparatus measurement system according to claim 3, characterized in that: The microwave therapeutic apparatus measurement system also includes: The cooling module is used to dissipate heat from the attenuator and the surrounding environment of the attenuator to reduce the surface temperature of the attenuator and the surrounding environment temperature of the attenuator.

5. The microwave therapeutic apparatus measurement system according to claim 4, characterized in that: The cooling module comprises: A heat sink is installed between the attenuator and the bottom surface of the accommodation space along the length direction of the attenuator to dissipate heat from the attenuator and the surrounding environment of the attenuator; an air intake fan mounted at one end of the radiator; and An air outlet fan is installed at an end of the radiator opposite to the installation position of the air inlet fan, and is suitable for cooperating with the air inlet fan to take away the heat emitted by the radiator.

6. The microwave therapeutic apparatus measurement system according to claim 1, characterized in that: The microwave therapeutic instrument measurement system also includes a power supply module; the power supply module includes: a socket adapted to receive a first power source provided by an external power supply unit; and An adapter is installed in the accommodating space and supported by a supporting member below the power sensor. The adapter is suitable for converting the first power supply from the socket to obtain a second power supply matching the spectrum analysis module, so as to use the second power supply to power the spectrum analysis module.

7. The microwave therapeutic apparatus measurement system according to claim 1, characterized in that: The processing module is also used to communicate with the spectrum analysis module, and to intercept the spectrum diagram based on the reference frequency and the frequency span sent by the display module to obtain a target spectrum diagram corresponding to the reference frequency and the frequency span; Wherein, the display module is also used to display the target spectrum diagram.

8. The microwave therapeutic apparatus measurement system according to claim 7, characterized in that: The processing module is also used for generating 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 for sending the alarm message to the display module; Wherein, the display module is also used to display the alarm information after receiving the alarm information.

9. The microwave therapeutic apparatus measurement system according to claim 1, characterized in that: The processing module is also used 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 of the attenuated microwave signal and the spectrum diagram.

10. The microwave therapeutic apparatus measurement system according to claim 1, characterized in that: The power sensor module includes a thermocouple power sensor.

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