A circulator with temperature compensation function and temperature compensation method

Abstract

The present invention belongs to the technical field of circulators, and specifically relates to a circulator with a temperature compensation function and a temperature compensation method. The temperature compensation sheet provided in the circulator realizes the primary compensation of the circulator temperature; the external power supply of the circulator coil is started, and the circulator coil is additionally powered by the external power supply to compensate the temperature of the circulator again; the intensity and direction of the magnetic field generated by the coil are monitored by the coil magnetic field detection module, and compared with the change amount and direction of the magnetic field intensity of the samarium cobalt permanent magnet under temperature compensation, the output voltage of the external power supply of the circulator coil is controlled, the current size or direction of the circulator coil is adjusted, and the intensity and direction of the magnetic field generated by the coil are finally adjusted, so that the magnetic field intensity of the magnetic field generated by the coil offsets the change amount of the magnetic field intensity of the samarium cobalt permanent magnet under temperature compensation. Accurate compensation of the circulator temperature is achieved, ensuring the normal operation of a large-sized low-frequency circulator.

Description

Technical Field

[0001] The present invention belongs to the technical field of circulators, and in particular relates to a circulator with a temperature compensation function and a temperature compensation method. Background Art

[0002] A circulator is a multi-port device that transmits the incident wave entering any port to the next port in the order determined by the static bias magnetic field. A circulator is a non-reversible device with several ends. The outstanding feature of a circulator, also called an isolator, is the unidirectional transmission of high-frequency signal energy. It controls the electromagnetic wave to be transmitted along a certain circular direction. This unidirectional transmission of high-frequency signal energy is mostly used between the output end and the load of a high-frequency power amplifier, playing the role of being independent and "isolated" from each other. The load impedance does not affect the working state of the power amplifier when it changes or even when it is open or short-circuited, thereby protecting the power amplifier.

[0003] The circulator has a normal operating temperature range, within which the circulator can work normally, but beyond this temperature range, the circulator may not work properly. For example, when the temperature is too high, the electronic components of the circulator may be damaged, causing the device to not work properly or even burn out. On the contrary, if the temperature is too low, the electronic components of the circulator may become too fragile and easily crack or break, which will also cause the device to fail.

[0004] At present, the temperature compensation of the circulator is generally performed by setting a temperature compensation sheet. However, since the lower the frequency of the circulator, the larger the size, the ordinary temperature compensation sheet is often used for small-sized circulators, and the temperature compensation effect on large-sized circulators is limited. It cannot make large-sized low-frequency circulators work normally under the temperature, and the circulator may still malfunction due to excessively high or low temperature.

[0005] Therefore, how to improve the existing circulators to ensure that large-sized low-frequency circulators can also work normally within a larger temperature range is a technical problem that needs to be solved urgently. Summary of the invention

[0006] The object of the present invention is to provide a circulator with temperature compensation function and a temperature compensation method, so as to improve the existing circulator and ensure that a large-sized low-frequency circulator can also work normally within a larger temperature range.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0008] In a first aspect, a temperature compensation method for a circulator having a temperature compensation function is provided, comprising the following steps:

[0009] S1: deploying at least two temperature compensation sheets on the upper and lower parts of the coil (9) and the samarium cobalt permanent magnet (11) of the circulator, starting the circulator, and realizing primary compensation of the circulator temperature through the temperature compensation sheets, wherein the temperature compensation sheets have a negative temperature expansion coefficient, and when the temperature rises, the volume of the temperature compensation sheets shrinks, thereby realizing primary compensation of the circulator temperature;

[0010] S2: The temperature data of the circulator is collected in real time by the temperature collection module and transmitted to the main control module. The main control module determines whether the real-time temperature of the circulator is within the preset temperature range. If not, step S4 is executed. If so, the temperature of the circulator is continuously compensated by the temperature compensation sheet.

[0011] S3: the main control module sends a start command to the external power supply of the circulator coil, the external power supply of the circulator coil (9) is started, and the external power supply is controlled to output an initial voltage, and the initial voltage output by the external power supply is used to provide additional power to the circulator coil (9), provide the circulator coil (9) with an initial current magnitude and direction, and compensate the circulator temperature again;

[0012] S4: monitoring the intensity and direction of the magnetic field generated by the coil (9) through the magnetic field detection module of the coil (9), and comparing the change in the magnetic field intensity and the direction of the change with the samarium cobalt permanent magnet (11) under temperature compensation to determine whether the directions are opposite and whether the intensities are the same. If both are yes, then the initial current size and direction of the external power supply to the coil (9) are not adjusted. Otherwise, executing step S6;

[0013] S5: adjusting the initial voltage of the external power supply of the circulator coil (9), thereby adjusting the magnitude or direction of the current of the circulator coil (9), and further adjusting the strength and direction of the magnetic field generated by the coil (9), so that the magnetic field strength of the magnetic field generated by the coil (9) offsets the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation.

[0014] Preferably, step S2 includes the following process:

[0015] S21: collecting the temperature of the circulator in real time through a temperature collection module;

[0016] S22: Determine whether the real-time temperature of the circulator is within a preset temperature range. If so, continue to perform temperature compensation on the circulator through the temperature compensation sheet. If not, execute step S33;

[0017] S23: Calculate the difference between the real-time collected temperature and the preset temperature range.

[0018] Preferably, step S4 includes the following specific process:

[0019] S41: The magnetic field detection module of the coil (9) detects the strength and direction of the magnetic field generated after the coil (9) is energized;

[0020] S42: comparing the intensity and direction of the magnetic field generated by energizing the coil (9) with the change in the intensity of the magnetic field of the samarium cobalt permanent magnet (11) under temperature compensation and the direction of the change;

[0021] S43: Determine whether the direction of the magnetic field generated by the coil (9) being energized is opposite to the direction of the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation, and at the same time determine whether the magnetic field strength generated by the coil (9) being energized is equal to the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation. If both are yes, the magnitude and direction of the current supplied to the coil (9) by the external power supply are not adjusted, and the difference between the magnetic field strength generated by the coil (9) being energized and the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation is calculated.

[0022] Preferably, in step S3, the coil (9) of the circulator is additionally powered by the external power supply, and when the temperature of the circulator is compensated again, the initial output voltage of the external power supply of the coil (9) is first given based on the difference between the real-time collected temperature calculated in step S33 and the preset temperature range.

[0023] Preferably, step S5 includes the following specific process:

[0024] S51: determining the direction of the output voltage of the external power supply according to the magnetic field strength generated by the coil (9) when it is energized and the direction of the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation calculated in step S43;

[0025] S52: according to the difference between the magnetic field strength generated by the coil (9) when it is energized and the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation calculated in step S43, the current of the circulator coil (9) is determined, and the output voltage of the external power supply is further calculated;

[0026] S53: further adjusting the current magnitude or direction of the circulator coil (9) so that the magnetic field strength generated by the coil (9) offsets the change in magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation.

[0027] In a second aspect, a circulator with a temperature compensation function is used to implement any one of the temperature compensation methods for a circulator with a temperature compensation function, comprising an upper cover plate (1) and a lower cover plate (3), wherein a cavity (2) is formed between the upper cover plate (1) and the lower cover plate (3), wherein a samarium cobalt permanent magnet (11) is provided at the center of the cavity (2), wherein a coil (9) is provided outside the samarium cobalt permanent magnet (11), wherein at least two temperature compensation sheets are provided at the upper and lower parts of the coil (9) and the samarium cobalt permanent magnet (11), wherein the coil (9) is also electrically connected to an external power supply, and further comprising a temperature acquisition module and a main control module, wherein the main control module is connected to the temperature acquisition module and the external power supply;

[0028] The temperature acquisition module is used to collect the temperature data of the circulator and transmit it to the main control module;

[0029] The main control module is used to determine whether the real-time temperature of the circulator is within a preset temperature range. If not, the main control module sends a start command to the external power supply of the circulator coil, the external power supply of the circulator coil (9) is started, and the external power supply is controlled to output an initial voltage. The initial voltage output by the external power supply is used to provide additional power to the circulator coil (9), provide the circulator coil (9) with an initial current magnitude and direction, and compensate the temperature of the circulator again. If yes, the circulator is continuously temperature compensated through the temperature compensation sheet;

[0030] The intensity and direction of the magnetic field generated by the coil (9) are monitored by the magnetic field detection module of the coil (9), and compared with the change in the magnetic field intensity and the direction of the change in the samarium cobalt permanent magnet (11) under temperature compensation to determine whether the directions are opposite and whether the intensities are the same. If both are yes, the initial current size and direction of the external power supply to the coil (9) are not adjusted. Otherwise, the direction of the output voltage of the external power supply is determined based on the calculated magnetic field intensity generated by the coil (9) when it is energized and the direction of the change in the magnetic field intensity of the samarium cobalt permanent magnet (11) under temperature compensation. The difference between the magnetic field strength generated by the circulator (9) and the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation is used to determine the current of the circulator coil (9), and further calculate the output voltage of the external power supply; the current of the circulator coil (9) is further adjusted so that the magnetic field strength of the magnetic field generated by the coil (9) offsets the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation; and the voltage adjustment process of the external power supply of the coil is cyclically executed, so that the temperature of the circulator is always within a preset temperature range by cyclically adjusting the voltage of the external power supply of the circulator coil.

[0031] Preferably, a gyromagnet (4) and a central conductor (5) are provided between the temperature compensation sheet disposed above the coil (9) and the samarium cobalt permanent magnet (11) and the upper cover plate (1), wherein the central conductor (5) is disposed above the gyromagnet (4), and a dielectric ring (10) is provided around the periphery of the central conductor (5).

[0032] Preferably, three temperature compensation sheets are provided, two temperature compensation sheets are provided on the upper part of the coil (9) and the samarium cobalt permanent magnet (11), including a first temperature compensation sheet (6) and a second temperature compensation sheet (7), and one temperature compensation sheet is provided on the lower part of the coil (9) and the samarium cobalt permanent magnet (11), which is a third temperature compensation sheet (8), and the first temperature compensation sheet (6), the second temperature compensation sheet (7) and the third temperature compensation sheet (8) are different in size and thickness.

[0033] The beneficial effects of the present invention include:

[0034] The circulator and temperature compensation method with temperature compensation function provided by the present invention realize primary compensation of the circulator temperature through the temperature compensation sheet provided in the circulator; start the external power supply of the circulator coil, and use the external power supply to provide additional power to the circulator coil, and compensate the temperature of the circulator again; monitor the intensity and direction of the magnetic field generated by the coil through the coil magnetic field detection module, and compare with the change amount and direction of the magnetic field intensity of the samarium cobalt permanent magnet under temperature compensation, control the output voltage of the circulator coil external power supply, adjust the current size or direction of the circulator coil, and finally adjust the intensity and direction of the magnetic field generated by the coil, so that the magnetic field intensity of the magnetic field generated by the coil offsets the change amount of the magnetic field intensity of the samarium cobalt permanent magnet under temperature compensation. Accurate compensation of the circulator temperature is achieved, ensuring the normal operation of the large-sized low-frequency circulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the composition structure of the circulator with temperature compensation function of the present invention.

[0036] Figure 2 It is a schematic diagram of the longitudinal cross-sectional structure of the circulator with temperature compensation function of the present invention.

[0037] Figure numerals: 1 upper cover plate; 2 cavity; 3 lower cover plate; 4 gyromagnet; 5 central conductor; 6 first temperature compensation plate; 7 second temperature compensation plate; 8 third temperature compensation plate; 9 coil; 10 dielectric ring; 11 samarium cobalt permanent magnet. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1~Figure 2 The present invention is further described in detail:

[0039] See attached Figure 1 As shown, a temperature compensation method for a circulator with a temperature compensation function comprises the following steps:

[0040] S1: deploying at least two temperature compensation sheets on the upper and lower parts of the coil (9) and the samarium cobalt permanent magnet (11) of the circulator, starting the circulator, and realizing primary compensation of the circulator temperature through the temperature compensation sheets, wherein the temperature compensation sheets have a negative temperature expansion coefficient, and when the temperature rises, the volume of the temperature compensation sheets shrinks, thereby realizing primary compensation of the circulator temperature;

[0041] S2: The temperature data of the circulator is collected in real time by the temperature collection module and transmitted to the main control module. The main control module determines whether the real-time temperature of the circulator is within the preset temperature range. If not, step S4 is executed. If so, the temperature of the circulator is continuously compensated by the temperature compensation sheet.

[0042] S3: the main control module sends a start command to the external power supply of the circulator coil, the external power supply of the circulator coil (9) is started, and the external power supply is controlled to output an initial voltage, and the initial voltage output by the external power supply is used to provide additional power to the circulator coil (9), provide the circulator coil (9) with an initial current magnitude and direction, and compensate the circulator temperature again;

[0043] S4: monitoring the intensity and direction of the magnetic field generated by the coil (9) through the magnetic field detection module of the coil (9), and comparing the change in the magnetic field intensity and the direction of the change with the samarium cobalt permanent magnet (11) under temperature compensation to determine whether the directions are opposite and whether the intensities are the same. If both are yes, then the initial current size and direction of the external power supply to the coil (9) are not adjusted. Otherwise, executing step S6;

[0044] S5: adjusting the initial voltage of the external power supply of the circulator coil (9), thereby adjusting the magnitude or direction of the current of the circulator coil (9), and further adjusting the strength and direction of the magnetic field generated by the coil (9), so that the magnetic field strength of the magnetic field generated by the coil (9) offsets the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation.

[0045] Wherein, step S2 includes the following process:

[0046] S21: collecting the temperature of the circulator in real time through a temperature collection module;

[0047] S22: Determine whether the real-time temperature of the circulator is within a preset temperature range. If so, continue to perform temperature compensation on the circulator through the temperature compensation sheet. If not, execute step S33;

[0048] S23: Calculate the difference between the real-time collected temperature and the preset temperature range;

[0049] Step S4 includes the following specific processes:

[0050] S41: The magnetic field detection module of the coil 9 detects the strength and direction of the magnetic field generated after the coil 9 is energized;

[0051] S42: comparing the intensity and direction of the magnetic field generated by energizing the coil 9 with the change in the intensity and direction of the magnetic field of the samarium cobalt permanent magnet 11 under temperature compensation;

[0052] S43: Determine whether the direction of the magnetic field generated by the coil 9 being energized is opposite to the direction of the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation, and at the same time determine whether the magnetic field strength generated by the coil 9 being energized is equal to the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation. If both are yes, the magnitude and direction of the current supplied to the coil 9 by the external power supply are not adjusted, and the difference between the magnetic field strength generated by the coil 9 being energized and the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation is calculated.

[0053] Step S5 includes the following specific processes:

[0054] S51: determining the direction of the output voltage of the external power supply according to the magnetic field strength generated by the coil 9 when it is energized and the direction of the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation calculated in step S43;

[0055] S52: according to the difference between the magnetic field strength generated by the coil 9 when it is energized and the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation calculated in step S43, the current of the circulator coil 9 is determined, and the output voltage of the external power supply is further calculated;

[0056] S63: Further adjust the current size or direction of the circulator coil 9 so that the magnetic field strength generated by the coil 9 offsets the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation.

[0057] The precise temperature compensation function of the circulator of the present invention is achieved through three-stage compensation. First, the primary compensation of the temperature of the circulator is achieved based on multiple temperature compensation sheets arranged on the upper and lower parts of the coil 9 and the samarium cobalt permanent magnet. If the circulator is at a normal operating temperature only through the temperature compensation effect of multiple temperature compensation sheets, there is no need to perform the subsequent two-stage temperature compensation. However, it is very difficult to achieve a normal operating temperature of the circulator only through the temperature compensation effect of the temperature compensation sheet, because the temperature compensation effect of the temperature compensation sheet is extremely limited. It is possible for small-sized high-frequency circulators, but in most cases it cannot make large-sized low-frequency circulators work normally at the temperature. Therefore, it is necessary to start the subsequent temperature compensation process for large-sized low-frequency circulators.

[0058] After primary compensation is performed through the temperature compensation sheet of the circulator, the temperature data of the circulator is collected in real time through the temperature acquisition module, and it is determined whether the real-time temperature of the circulator is within the preset temperature range. If not, the external power supply of the circulator coil 9 is started, and the circulator coil 9 is additionally powered by the external power supply to compensate the temperature of the circulator again. The strength and direction of the magnetic field generated by the coil 9 are monitored by the magnetic field detection module of the coil 9, and compared with the change amount and direction of the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation, to determine whether the direction is opposite and whether the strength is the same. If both are yes, the current size and direction of the external power supply to the coil 9 are not adjusted. Otherwise, the output voltage of the external power supply of the circulator coil 9 is controlled, the current size or direction of the circulator coil 9 is adjusted, and the strength and direction of the magnetic field generated by the coil 9 are finally adjusted. The ultimate goal is to make the magnetic field strength of the magnetic field generated by the coil 9 offset the change amount of the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation.

[0059] In step S3, the external power supply is used to provide additional power to the coil 9 of the circulator. When the temperature of the circulator is compensated again, the initial output voltage of the external power supply of the coil 9 is first given based on the difference between the real-time collected temperature calculated in step S23 and the preset temperature range.

[0060] In step S4, the magnetic field detection module of coil 9 detects the magnetic field strength and direction generated after coil 9 is energized; compares the magnetic field strength and direction generated by coil 9 being energized with the change in magnetic field strength of samarium cobalt permanent magnet 11 under temperature compensation and the direction of the change; determines whether the direction of the magnetic field generated by coil 9 being energized is opposite to the direction of the change in magnetic field strength of samarium cobalt permanent magnet 11 under temperature compensation, and at the same time determines whether the magnetic field strength generated by coil 9 being energized is equal to the change in magnetic field strength of samarium cobalt permanent magnet 11 under temperature compensation. If both are yes, the magnitude and direction of the current supplied to coil 9 by the external power supply are not adjusted, and the difference between the magnetic field strength generated by coil 9 being energized and the change in magnetic field strength of samarium cobalt permanent magnet 11 under temperature compensation is calculated.

[0061] In step S5, the direction of the output voltage of the external power supply is determined according to the direction of the magnetic field strength generated by the coil 9 when it is energized and the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation calculated in step S43; the current of the circulator coil 9 is determined according to the difference between the magnetic field strength generated by the coil 9 when it is energized and the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation calculated in step S43, and the output voltage of the external power supply is further calculated; the current or direction of the circulator coil 9 is further adjusted so that the magnetic field strength of the magnetic field generated by the coil 9 offsets the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation.

[0062] A circulator with temperature compensation function includes an upper cover plate 1 and a lower cover plate 3, wherein a cavity 2 is formed between the upper cover plate 1 and the lower cover plate 3, wherein a samarium cobalt permanent magnet 11 is arranged at the center of the cavity 2, wherein a coil 9 is arranged outside the samarium cobalt permanent magnet 11, wherein at least two temperature compensation sheets are arranged above and below the coil 9 and the samarium cobalt permanent magnet 11, and the coil 9 is also electrically connected to an external power supply. A gyromagnet 4 and a central conductor 5 are also arranged between the temperature compensation sheet arranged above the coil 9 and the samarium cobalt permanent magnet 11 and the upper cover plate 1, wherein the central conductor 5 is arranged above the gyromagnet 4. A dielectric ring 10 is also arranged outside the central conductor 5. There are three temperature compensation sheets, two of which are provided on the upper part of the coil 9 and the samarium cobalt permanent magnet 11, including a first temperature compensation sheet 6 and a second temperature compensation sheet 7, and a temperature compensation sheet is provided on the lower part of the coil 9 and the samarium cobalt permanent magnet 11, which is a third temperature compensation sheet 8. The sizes and thicknesses of the first temperature compensation sheet 6, the second temperature compensation sheet 7 and the third temperature compensation sheet 8 are different.

[0063] The circulator with temperature compensation function also includes a temperature acquisition module and a main control module, and the main control module is connected to the temperature acquisition module and the external power supply; the temperature acquisition module is used to collect temperature data of the circulator and transmit it to the main control module; the main control module is used to determine whether the real-time temperature of the circulator is within a preset temperature range. If not, the main control module sends a start command to the external power supply of the circulator coil, and the external power supply of the circulator coil 9 is started, and the external power supply is controlled to output an initial voltage. The initial voltage output by the external power supply is used to provide additional power to the circulator coil 9, provide the circulator coil 9 with an initial current size and direction, and compensate the temperature of the circulator again. If so, the circulator is continuously temperature compensated through the temperature compensation sheet.

[0064] The strength and direction of the magnetic field generated by the coil 9 are monitored by the magnetic field detection module of the coil 9, and compared with the change in the magnetic field strength and the direction of the change under temperature compensation of the samarium cobalt permanent magnet 11 to determine whether the directions are opposite and whether the strengths are the same. If both are yes, the initial current size and direction of the external power supply to the coil 9 are not adjusted. Otherwise, the direction of the output voltage of the external power supply is determined by the calculated magnetic field strength generated by the coil 9 being energized and the direction of the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation; the current size of the circulator coil 9 is determined according to the difference between the calculated magnetic field strength generated by the coil 9 being energized and the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation, and the output voltage size of the external power supply is further calculated; the current size or direction of the circulator coil 9 is further adjusted so that the magnetic field strength of the magnetic field generated by the coil 9 offsets the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation; the voltage adjustment process of the coil external power supply is cyclically executed, and the temperature of the circulator is always within a preset temperature range by cyclically adjusting the voltage of the external power supply of the circulator coil.

[0065] The change of magnetic field strength under temperature of samarium cobalt permanent magnet 11 is compensated by coil 9, but the temperature compensation of coil 9 external power supply is based on primary compensation of temperature compensation sheet. Multiple temperature compensation sheets are set to compensate for the change of magnetic field temperature and adjust the internal height of the product. First, measure the change of magnetic field strength when no voltage source is connected and only compensated by temperature compensation sheet. At this time, the index under temperature is not enough, which means that the magnetic field strength is not appropriate. At this time, adjust the index to normal value through external power supply.

[0066] First, an external power supply is connected through the power interface reserved on the cavity 2 to power the coil 9. When the coil 9 is powered on, the current generated by the coil 9 will form a magnetic field. The current generated by the coil 9 is controlled by controlling the output voltage of the external power supply, thereby controlling the magnetic field generated by the coil 9. Finally, the magnetic field strength of the magnetic field generated by the coil 9 just offsets the change in the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature. The temperature compensation sheet first plays a role in temperature compensation, but it can only compensate for the change in magnetic field strength at part of the temperature, and the rest is compensated by the built-in coil 9 connected to the external power supply. By combining the temperature compensation sheet with the external power supply of the coil 9, accurate temperature compensation of the circulator can be achieved, and at the same time, the circulator does not need to be connected to a too strong voltage source to complete accurate temperature compensation.

[0067] In summary, the circulator and temperature compensation method with temperature compensation function provided by the present invention realize primary compensation of the circulator temperature through the temperature compensation sheet provided in the circulator; start the external power supply of the circulator coil 9, and provide additional power to the circulator coil 9 through the external power supply to compensate the temperature of the circulator again; monitor the strength and direction of the magnetic field generated by the coil 9 through the magnetic field detection module of the coil 9, and compare it with the change amount and direction of the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation, control the output voltage of the external power supply of the circulator coil 9, adjust the current size or direction of the circulator coil 9, and finally adjust the strength and direction of the magnetic field generated by the coil 9, so that the magnetic field strength of the magnetic field generated by the coil 9 offsets the change amount of the magnetic field strength of the samarium cobalt permanent magnet 11 under temperature compensation. Accurate compensation of the circulator temperature is achieved to ensure the normal operation of the large-sized low-frequency circulator.

Claims

1. A temperature compensation method for a circulator with a temperature compensation function, characterized in that: The following steps are involved: S1: deploying at least two temperature compensation sheets on the upper and lower parts of the coil (9) and the samarium cobalt permanent magnet (11) of the circulator, and starting the circulator; S2: realizing primary compensation of the circulator temperature through the temperature compensation sheet; S3: The temperature data of the circulator is collected in real time by the temperature collection module and transmitted to the main control module. The main control module determines whether the real-time temperature of the circulator is within the preset temperature range. If not, step S4 is executed. If so, the temperature of the circulator is continuously compensated by the temperature compensation sheet. S4: the main control module sends a start command to the external power supply of the circulator coil, the external power supply of the circulator coil (9) is started, and the external power supply is controlled to output an initial voltage, and the initial voltage output by the external power supply is used to provide additional power to the circulator coil (9), provide the circulator coil (9) with an initial current magnitude and direction, and compensate the circulator temperature again; S5: monitoring the intensity and direction of the magnetic field generated by the coil (9) through the magnetic field detection module of the coil (9), and comparing the change in the magnetic field intensity and the direction of the change with the samarium cobalt permanent magnet (11) under temperature compensation to determine whether the directions are opposite and whether the intensities are the same; if both are yes, the initial current size and direction of the external power supply to the coil (9) are not adjusted; otherwise, executing step S6; S6: adjusting the initial voltage of the external power supply of the circulator coil (9), thereby adjusting the magnitude or direction of the current of the circulator coil (9), and further adjusting the strength and direction of the magnetic field generated by the coil (9), so that the magnetic field strength of the magnetic field generated by the coil (9) offsets the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation; S7: cyclically executing steps S3 to S6, by cyclically adjusting the voltage of the external power supply of the circulator coil, so that the temperature of the circulator is always within a preset temperature range; Wherein, step S3 includes the following process: S31: collecting the temperature of the circulator in real time through a temperature collection module; S32: Determine whether the real-time temperature of the circulator is within a preset temperature range. If so, continue to perform temperature compensation on the circulator through the temperature compensation sheet. If not, execute step S33. S33: Calculate the difference between the real-time collected temperature and the preset temperature range; In step S4, the coil (9) of the circulator is additionally powered by the external power supply. When the temperature of the circulator is compensated again, firstly, based on the difference between the real-time collected temperature calculated in step S33 and the preset temperature range, an initial output voltage of the external power supply of the coil (9) is given; Step S5 includes the following specific processes: S51: The magnetic field detection module of the coil (9) detects the strength and direction of the magnetic field generated after the coil (9) is energized; S52: comparing the intensity and direction of the magnetic field generated by energizing the coil (9) with the change in the intensity of the magnetic field of the samarium cobalt permanent magnet (11) under temperature compensation and the direction of the change; S53: determining whether the direction of the magnetic field generated by the coil (9) being energized is opposite to the direction of the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation, and determining whether the magnetic field strength generated by the coil (9) being energized is equal to the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation. If both are true, the magnitude and direction of the current supplied to the coil (9) by the external power supply are not adjusted, and the difference between the magnetic field strength generated by the coil (9) being energized and the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation is calculated; Step S6 includes the following specific processes: S61: determining the direction of the output voltage of the external power supply according to the magnetic field strength generated by the coil (9) when it is energized and the direction of the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation calculated in step S53; S62: according to the difference between the magnetic field strength generated by the coil (9) when it is energized and the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation calculated in step S53, the current of the circulator coil (9) is determined, and the output voltage of the external power supply is further calculated; S63: further adjusting the current magnitude or direction of the circulator coil (9) so that the magnetic field strength generated by the coil (9) offsets the change in magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation.

2. A circulator with temperature compensation function, used to implement the temperature compensation method of a circulator with temperature compensation function according to claim 1, characterized in that: The device comprises an upper cover plate (1) and a lower cover plate (3), wherein a cavity (2) is formed between the upper cover plate (1) and the lower cover plate (3), wherein a samarium cobalt permanent magnet (11) is arranged at the center of the cavity (2), a coil (9) is arranged outside the samarium cobalt permanent magnet (11), at least two temperature compensation sheets are arranged at the upper and lower parts of the coil (9) and the samarium cobalt permanent magnet (11), the coil (9) is also electrically connected to an external power supply, and further comprises a temperature acquisition module and a main control module, wherein the main control module is connected to the temperature acquisition module and the external power supply; The temperature acquisition module is used to collect the temperature data of the circulator and transmit it to the main control module; The main control module is used to determine whether the real-time temperature of the circulator is within a preset temperature range. If not, the main control module sends a start command to the external power supply of the circulator coil, the external power supply of the circulator coil (9) is started, and the external power supply is controlled to output an initial voltage. The initial voltage output by the external power supply is used to provide additional power to the circulator coil (9), provide the circulator coil (9) with an initial current magnitude and direction, and compensate the temperature of the circulator again. If yes, the circulator is continuously temperature compensated through the temperature compensation sheet; The intensity and direction of the magnetic field generated by the coil (9) are monitored by the magnetic field detection module of the coil (9), and compared with the change in the magnetic field intensity and the direction of the change in the samarium cobalt permanent magnet (11) under temperature compensation to determine whether the directions are opposite and whether the intensities are the same. If both are yes, the initial current size and direction of the external power supply to the coil (9) are not adjusted. Otherwise, the direction of the output voltage of the external power supply is determined based on the calculated magnetic field intensity generated by the coil (9) when it is energized and the direction of the change in the magnetic field intensity of the samarium cobalt permanent magnet (11) under temperature compensation. The difference between the magnetic field strength generated by the circulator (9) and the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation is used to determine the current of the circulator coil (9), and further calculate the output voltage of the external power supply; the current of the circulator coil (9) is further adjusted so that the magnetic field strength of the magnetic field generated by the coil (9) offsets the change in the magnetic field strength of the samarium cobalt permanent magnet (11) under temperature compensation; the voltage adjustment process of the coil external power supply is cyclically executed, and the temperature of the circulator is always within a preset temperature range by cyclically adjusting the voltage of the circulator coil external power supply; A gyromagnet (4) and a central conductor (5) are also provided between a temperature compensation sheet disposed above the coil (9) and the samarium cobalt permanent magnet (11) and the upper cover plate (1), wherein the central conductor (5) is disposed above the gyromagnet (4); The periphery of the central conductor (5) is also sheathed with a dielectric ring (10); Three temperature compensation sheets are provided. Two temperature compensation sheets are provided on the upper part of the coil (9) and the samarium cobalt permanent magnet (11), including a first temperature compensation sheet (6) and a second temperature compensation sheet (7). A temperature compensation sheet is provided on the lower part of the coil (9) and the samarium cobalt permanent magnet (11), which is a third temperature compensation sheet (8). The first temperature compensation sheet (6), the second temperature compensation sheet (7) and the third temperature compensation sheet (8) are different in size and thickness.

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