Ultrasonic wind meter
By setting an independent ohmic element in the ultrasonic anemometer and combining it with heating control, the problem of anemometer icing in low temperature environments is solved, and normal operation and wind measurement accuracy under extreme conditions are achieved.
Patent Information
- Application Number
- CN202423016887.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing ultrasonic anemometers are prone to freezing in severe weather conditions such as extremely low temperatures, ice and snow, freezing rain, etc., resulting in the inability to measure wind normally, affecting production and life.
An ultrasonic anemometer was designed. Two sets of relatively independent ohmic elements were set in the transmitting disk and the reflecting disk. The control board and the interface board were electrically connected, and the heating control was achieved using a temperature sensor and a heating module to ensure normal operation in a low temperature environment.
In extremely low temperature environments, ultrasonic anemometers can operate normally, avoiding anti-freezing failure and ensuring wind measurement accuracy and reliability.
Smart Images
Figure CN223449964U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to ultrasonic measurement technical field, specifically, relate to an ultrasonic anemometer. BACKGROUND
[0002] The ultrasonic anemometer is born with the advantages of no moving wear parts, no need for regular calibration, high measurement accuracy and long service life, is widely used in wind power generation, environmental monitoring, meteorology, rail transit and other industries, and the ultrasonic anemometer on the market is made into a wind measuring instrument based on the principle that the propagation speed of ultrasonic waves in air changes with wind speed, for example, the measurement of wind speed and direction based on the ultrasonic time difference method principle.
[0003] Due to the unique structure of the ultrasonic anemometer and the ultrasonic operation environment mostly in outdoor, the influence of weather factors cannot be ignored, for example, the ultrasonic anemometer is extremely easy to freeze and cannot realize normal wind measurement in extremely low temperature ice and snow, freezing rain and other weather environments, thereby causing serious impact on production and life. Based on the above problems, the utility model provides an ultrasonic anemometer which is stable and effective and can normally operate in low temperature ice and snow, freezing rain and other weather environments. UTILITY MODEL CONTENTS
[0004] The utility model aims at the defects in the above background technical, provide a kind of ultrasonic anemometer.
[0005] To achieve the above object, one of the utility model provides an ultrasonic anemometer, comprising: a base;Transmitting disc, fixed on the base, the top of the transmitting disc is provided with ultrasonic probe and pillar;Reflective disc, fixed on the other end of the pillar, for reflecting the ultrasonic signal emitted by the ultrasonic probe;Top cover, buckled on the reflective disc, the ultrasonic anemometer further comprises: a plurality of first ohmic elements and a plurality of second ohmic elements in series arranged in the top gap space formed by the top cover and the reflective disc in a ring arrangement, and the first ohmic element and the second ohmic element are arranged at intervals;And a plurality of third ohmic elements and a plurality of fourth ohmic elements in series arranged in the top gap space formed by the transmitting disc and the base in a ring arrangement, and the third ohmic element and the fourth ohmic element are arranged at intervals.
[0006] Further, the inside of the base is provided with control panel and interface board arranged in layers and electrically connected, and the control panel is electrically connected with the first ohmic element, the second ohmic element, the third ohmic element and the fourth ohmic element respectively.
[0007] Further, the first and second ohmic elements are respectively electrically connected with the corresponding control board through a first bus bar arranged at the center of the reflecting disc; and the third and fourth ohmic elements are respectively electrically connected with the corresponding control board through a second bus bar arranged at the center of the transmitting disc.
[0008] Further, the reflecting disc is provided with a plurality of annularly arranged grooves corresponding to the first and second ohmic elements, which are suitable for embedding the first and second ohmic elements, and the grooves and the lower end surface of the top cover form a top clearance space, the first and second ohmic elements are attached in the grooves, and when the top cover is buckled on the reflecting disc, the top cover and the grooves are limited in the top clearance space formed by the grooves and the lower end surface of the top cover.
[0009] Further, the lower end of the transmitting disc is provided with a plurality of annularly arranged grooves corresponding to the third and fourth ohmic elements, which are suitable for embedding the third and fourth ohmic elements, and the ultrasonic anemometer further comprises a pressing plate fixed at the lower end of the transmitting disc, and the third and fourth ohmic elements are pressed between the pressing plate and the groove step.
[0010] Further, the ultrasonic anemometer further comprises an aviation plug arranged at the bottom of the base and matched with the external cable interface, and the aviation plug is further electrically connected with the interface board.
[0011] Further, the ultrasonic anemometer further comprises a first temperature sensor arranged on the reflecting disc, a second temperature sensor arranged on the transmitting disc, and a signal acquisition board electrically connected with the first and second temperature sensors, and the signal acquisition board is respectively provided with a first temperature signal acquisition module electrically connected with the first temperature sensor and a second temperature signal acquisition module electrically connected with the second temperature sensor.
[0012] Further, the control board is electrically connected with the interface board and the signal acquisition board and arranged in a stacked manner along the mounting direction, the signal acquisition board is arranged above the control board and parallel to the control board, and the interface board is arranged below the control board and parallel to the control board.
[0013] Further, the ultrasonic anemometer further comprises a timing module arranged on the control board, which is configured to feed back to the master module arranged on the control board the heating time length of the first, second, third and fourth ohmic elements under the preset constant heating power.
[0014] Further, the control board is respectively provided with a first power selection circuit electrically connected with the first ohmic element, a second power selection circuit electrically connected with the second ohmic element, a third power selection circuit electrically connected with the third ohmic element and a fourth power selection circuit electrically connected with the fourth ohmic element; the first, second, third and fourth power selection circuits are electrically connected with a power distribution module arranged on the control board, and the power distribution module is configured to generate an equal heating control instruction or a power redistribution control instruction in response to the master module and control the first, second, third and fourth power selection circuits.
[0015] Further, one first power selection circuit corresponds to a plurality of first ohmic elements connected in series; one second power selection circuit corresponds to a plurality of second ohmic elements connected in series; one third power selection circuit corresponds to a plurality of third ohmic elements connected in series; and one fourth power selection circuit corresponds to a plurality of fourth ohmic elements connected in series; the first, second, third and fourth power selection circuits each comprise a power adjustment branch and a constant power branch.
[0016] Further, the first output end of the first and second power selection circuits is connected with one end of a current limiting module or a pulse width modulation circuit, and the other end of the current limiting module or the pulse width modulation circuit is connected with the corresponding first and second ohmic elements, so as to respectively form the power adjustment branch of the first and second power selection circuits; the second output end of the power selection circuit is directly connected with the other end of the corresponding first and second ohmic elements, so as to form the constant power branch.
[0017] Further, the power adjustment branch of the third and fourth power selection circuits is configured as an adjustable resistance circuit, the first output end of the third and fourth power selection circuits is connected with one end of the adjustable resistance circuit, and the other end of the adjustable resistance circuit is connected with the corresponding third and fourth ohmic elements, so as to respectively form the power adjustment branch of the third and fourth power selection circuits; the second output end of the power selection circuit is directly connected with the other end of the corresponding third and fourth ohmic elements, so as to form the constant power branch.
[0018] The utility model discloses a kind of anti-freezing methods of ultrasonic anemometer of the second utility model, further comprising:
[0019] In response to anemometer anti-freezing trigger event, the master module triggers and generates balanced heating control instructions.
[0020] The power distribution module controls the first, second, third and fourth ohmic elements to heat according to the preset constant heating power in response to the balanced heating control instructions.
[0021] In response to the heating duration trigger event, the master module triggers and generates power redistribution control instructions. The power distribution module controls the first and / or second ohmic elements to heat according to the first preset heating power and controls the third and fourth ohmic elements to heat according to the second preset heating power based on the power redistribution instructions.
[0022] Further, the anemometer anti-freezing trigger event is configured as a trigger signal for starting heating issued by the upper computer to the ultrasonic anemometer, as a trigger signal generated when the temperature signal collected by the first or second temperature sensor is lower than the first preset temperature, or as a trigger signal generated when the external temperature is lower than the second preset temperature.
[0023] Further, the heating duration trigger event is configured as a trigger signal generated when the actual heating duration of the first, second, third and fourth ohmic elements according to the preset constant heating power exceeds the preset heating duration.
[0024] Further, in response to the balanced heating control instructions and the constant power branch of the first and second power selection circuits is enabled to control the first and second ohmic elements to heat according to the preset constant heating power. The power distribution module responds to the balanced heating control instructions and enables the constant power branch of the third and fourth power selection circuits to control the third and fourth ohmic elements to heat according to the preset constant heating power.
[0025] Further, the power distribution module controls the first and / or second ohmic elements according to the first preset heating power based on the power redistribution control instructions.
[0026] Further, the power distribution module is configured to simultaneously turn on the power regulating branch of the first power selection circuit and the power regulating branch of the second power selection circuit according to the power re-distribution control instruction and the first preset heating power; or the power distribution module is configured to control one of the constant power branches of the first power selection circuit and the second power selection circuit to be in the on state and the other constant power branch to be in the off state according to the power re-distribution control instruction.
[0027] Further, the power distribution module controls the third power selection circuit and the fourth power selection circuit to heat the corresponding third ohmic element and fourth ohmic element according to the power re-distribution control instruction and the second preset heating power.
[0028] Further, the power distribution module is configured to simultaneously turn on the power regulating branch of the third power selection circuit and the power regulating branch of the fourth power selection circuit according to the power re-distribution control instruction; or the power distribution module is configured to keep one of the constant power branches of the third power selection circuit and the fourth power selection circuit in the on state and the other constant power branch to be in the off state from the on state to the off state and the corresponding power regulating branch to be in the on state from the off state to the on state according to the power re-distribution control instruction and the second preset heating power.
[0029] In summary, the ultrasonic anemometer and the anti-freezing method thereof can implement different modes of heating according to different heating needs, and two groups of relatively independent ohmic elements are arranged in the transmitting disc and the reflecting disc, which can ensure the normal operation of the ultrasonic anemometer in a low-temperature freezing environment, avoid the occurrence of anti-freezing failure, and effectively ensure the uniformity of heating. In an extreme case, even if one group of ohmic elements in the transmitting disc and the reflecting disc cannot work normally, the ultrasonic anemometer can also be effectively ensured to operate normally in a freezing environment. BRIEF DESCRIPTION OF DRAWINGS
[0030] Figure 1 It is a perspective view of an ultrasonic anemometer according to the utility model.
[0031] Figure 2 It is an exploded view of an ultrasonic anemometer according to the utility model.
[0032] Figure 3 It is an exploded view of an ultrasonic anemometer according to the utility model.
[0033] Figure 4 It is a side view of an ultrasonic anemometer according to the utility model.
[0034] Figure 5 It isFigure 4 The utility model discloses one of a kind of ultrasonic anemometer along the section view of A-A direction.
[0035] Figure 6 It is the schematic view that the third ohm element, the fourth ohm element of one of the utility model discloses a kind of ultrasonic anemometer are assembled in the reflection cover.
[0036] Figure 7 It is the flow schematic view of one of the utility model discloses a kind of ultrasonic anemometer anti-freezing method. DETAILED DESCRIPTION
[0037] To explain the technical content, construction features, purposes and effects of the utility model in detail, the following examples are cited and described in detail with the drawings.
[0038] Unless otherwise defined, all technical and scientific terms used in the application are the same as the meanings commonly understood by the person skilled in the art of the application. The terms used in the application are only for the purpose of describing the specific embodiments and are not intended to limit the scope of the application. The term "and / or" used in the application includes any and all combinations of one or more related listed items.
[0039] Embodiment one
[0040] Please refer to Figures 1 to 6 The utility model discloses one of a kind of ultrasonic anemometer 100, including: one both ends open inside hollow base 1, inside setting has the control panel 2 and interface board 3 of laminated structure arrangement and electric connection;Transmitting disc 4, fixed on base 1, the top on transmitting disc 4 is provided with ultrasonic probe 5 and pillar 6, and the number of pillar 6 is 4;Reflection disc 7, is fixed on the other end of pillar 6, is used to reflect the ultrasonic wave signal of ultrasonic probe 5 emission;Top cover 8, buckle in the reflection disc 7, a plurality of series first ohm element 9 and a plurality of series second ohm element 10 are arranged in the top clearance space (not identified in the drawing) formed between top cover 8 and reflection disc 7 in annular arrangement mode, and first ohm element 9 and second ohm element 10 are spaced apart, and a plurality of series third ohm element 11 and a plurality of series fourth ohm element 12 are arranged in the top clearance space (not identified in the drawing) formed between transmitting disc 4 and base 1 in annular arrangement mode, and third ohm element 11 and fourth ohm element 12 are spaced apart.
[0041] The control panel 2 is electrically connected with the first ohm element 9, the second ohm element 10, the third ohm element 11 and the fourth ohm element 12 respectively.
[0042] The reflecting disc 7 is provided with a plurality of annularly arranged grooves 71 corresponding to the first and second ohmic elements 9 and 10, which are suitable for embedding the first and second ohmic elements 9 and 10. The grooves 71 and the lower end surface of the top cover 8 form a top gap space. The first and second ohmic elements 9 and 10 are attached in the grooves 41 by means of glue. When the top cover 8 is buckled on the reflecting disc 7, the top cover 8 and the grooves 71 limit the first and second ohmic elements 9 and 10, which are effectively bound in the top gap space formed by the grooves 71 and the lower end surface of the top cover 8.
[0043] The first and second ohmic elements 9 and 10 are respectively electrically connected to the corresponding control board through the first bus bar 13 arranged at the center of the reflecting disc.
[0044] The third and fourth ohmic elements 11 and 12 are respectively electrically connected to the corresponding control board 2 through the second bus bar 14 arranged at the center of the reflecting disc 7.
[0045] The lower end of the reflecting disc 4 is provided with a plurality of annularly arranged grooves 41 corresponding to the third and fourth ohmic elements 11 and 12, which are suitable for embedding the third and fourth ohmic elements 11 and 12. The ultrasonic anemometer further comprises a pressing plate 15 fixed to the lower end of the reflecting disc. The third and fourth ohmic elements 11 and 12 are pressed between the pressing plate 15 and the step of the grooves 41. The pressing plate 14 is fixed to the lower end of the reflecting disc 4 by means of screws.
[0046] As a preferred embodiment, the ultrasonic anemometer further comprises an aviation plug 16 arranged at the bottom of the base 1, which is matched with the interface of the external cable (not shown in the figure) and electrically connected to the control board 2.
[0047] Embodiment Two
[0048] Please refer to Figure 4 On the basis of embodiment one, the ultrasonic anemometer 100 further comprises a first temperature sensor arranged on the reflecting disc 7, a second temperature sensor arranged on the reflecting disc 7, and a signal acquisition board 17 electrically connected to the first and second temperature sensors. Correspondingly, the signal acquisition board 17 is respectively provided with a first temperature signal acquisition module electrically connected to the first temperature sensor and a second temperature signal acquisition module electrically connected to the second temperature sensor.
[0049] The control board 2 is electrically connected with the interface board 3 and the signal acquisition board 17 and arranged in a stacking manner along the installation direction. The signal acquisition board 17 is arranged above the control board 2 and parallel to the control board 2. The interface board 3 is arranged below the control board 2 and parallel to the control board 2. It should be particularly pointed out that, in the embodiment, the installation direction is the direction in which the central axis of the ultrasonic anemometer 100 is perpendicular to the horizontal installation plane, i.e., the vertical installation direction.
[0050] The first temperature sensor and the second temperature sensor are respectively used to acquire temperature data on the corresponding reflecting disc 7 and emitting disc 4.
[0051] The ultrasonic anemometer 100 further comprises a timing module (not shown in the figure) arranged on the control board 2, which is used to feed back, to a main control module (not shown in the figure) arranged on the control board 2, the heating time length of the first ohmic element 9, the second ohmic element 10, the third ohmic element 11 and the fourth ohmic element 12 heated at a preset constant heating power.
[0052] The control board 2 is respectively provided with a first power selection circuit electrically connected with the first ohmic element 9, a second power selection circuit electrically connected with the second ohmic element 10, a third power selection circuit electrically connected with the third ohmic element 11 and a fourth power selection circuit electrically connected with the fourth ohmic element 12. The first power selection circuit, the second power selection circuit, the third power selection circuit and the fourth power selection circuit are electrically connected with a power distribution module arranged on the control board 2. The power distribution module is responsive to the balanced heating control instruction or the power redistribution control instruction generated by the main control module and controls the first power selection circuit (not shown in the figure), the second power selection circuit (not shown in the figure), the third power selection circuit (not shown in the figure) and the fourth power selection circuit (not shown in the figure).
[0053] A first power selection circuit corresponds to a plurality of first ohmic elements 9 in series; a second power selection circuit corresponds to a plurality of second ohmic elements 10 in series; a third power selection circuit corresponds to a plurality of third ohmic elements 11 in series; a fourth power selection circuit corresponds to a plurality of fourth ohmic elements 12 in series. The first power selection circuit, the second power selection circuit, the third power selection circuit and the fourth power selection circuit each include a power regulation branch and a constant power branch, and the power regulation branch of the first power selection circuit and the second power selection circuit can be configured as a current limiting module or a pulse width modulation circuit (PWM circuit). Among them, the first output end of the power selection circuit is connected with one end of the current limiting module or the pulse width modulation circuit, and the other end of the current limiting module or the pulse width modulation circuit is connected with the corresponding first ohmic element 9 and second ohmic element 10, so as to constitute the power regulation branch of the first power selection circuit and the second power selection circuit respectively; the second output end of the power selection circuit is directly connected with the other end of the corresponding first ohmic element 9 and second ohmic element 10, so as to constitute the constant power branch.
[0054] The power regulation branch of the third power selection circuit and the fourth power selection circuit can be configured as an adjustable resistance circuit. Among them, the first output end of the power selection circuit is connected with one end of the adjustable resistance circuit, and the other end of the adjustable resistance circuit is connected with the corresponding third ohmic element 11 and fourth ohmic element 12, so as to constitute the power regulation branch of the third power selection circuit and the fourth power selection circuit respectively; the second output end of the power selection circuit is directly connected with the other end of the corresponding third ohmic element 11 and fourth ohmic element 12, so as to constitute the constant power branch.
[0055] How to configure the power regulation branch can be configured according to the actual situation, which will not be repeated here.
[0056] Please refer to Figure 7 , the anti-freezing method of the ultrasonic anemometer of the utility model, comprising:
[0057] Step S101, in response to the anemometer anti-freezing triggering event, the main control module triggers and generates an equal heating control instruction;
[0058] Step S102, the power distribution module controls the first ohmic element 9, the second ohmic element 10, the third ohmic element 11 and the fourth ohmic element 12 to heat according to the preset constant heating power in response to the equal heating control instruction;
[0059] Step S103, the master module responds to the heating time trigger event, trigger and generate power redistribution control instruction, power distribution module according to power redistribution instruction control first ohmic element 9 and / or second ohmic element 10 according to the first preset heating power heating, control third ohmic element 11 and fourth ohmic element 12 according to the second preset heating power heating.
[0060] In the step S101, the wind sensor anti-freezing trigger event can be configured as a trigger signal for starting heating sent by the upper computer to the ultrasonic wind sensor, or can be configured as a trigger signal generated when the temperature signal collected by the first temperature sensor or the second temperature sensor is lower than the first preset temperature; it can also be configured as a trigger signal generated when the external temperature is lower than the second preset temperature.
[0061] In the step S103, the heating time trigger event is configured as a trigger signal generated when the actual heating time of the first ohmic element 9, the second ohmic element 10, the third ohmic element 11 and the fourth ohmic element 12 according to the preset constant heating power exceeds the preset heating time.
[0062] The step S102 further comprises: the power distribution module responds to the balanced heating control instruction and selects the constant power branch of the first power selection circuit and the second power selection circuit to control the first ohmic element 9 and the second ohmic element 10 to heat according to the preset constant heating power; the power distribution module responds to the balanced heating control instruction and selects the constant power branch of the third power selection circuit and the fourth power selection circuit to control the third ohmic element 11 and the fourth ohmic element 12 to heat according to the preset constant heating power.
[0063] The step S103 further comprises: the power distribution module controls the first power selection circuit and / or the second power selection circuit to heat the corresponding first ohmic element 9 and / or the second ohmic element 10 according to the first preset heating power according to the power redistribution control instruction. Specifically, in one of the possible embodiments, the power distribution module is configured to select the power adjustment branch of the first power selection circuit and the power adjustment branch of the second power selection circuit according to the power redistribution control instruction and according to the first preset heating power; in one of the embodiments, the power distribution module is configured to control one of the constant power branches of the first power selection circuit and the second power selection circuit to be in the selected state according to the power redistribution control instruction, and the other constant power branch is turned off.
[0064] The step S103 further comprises that the power distribution module controls the third power selection circuit and the fourth power selection circuit to heat the corresponding third ohmic element 11 and the fourth ohmic element 12 according to the power re-distribution control instruction and according to the second preset heating power. Specifically, in one of the possible embodiments, the power distribution module is configured to select the power regulating branch of the third power selection circuit and the power regulating branch of the fourth power selection circuit simultaneously according to the power re-distribution control instruction. In one of the embodiments, the power distribution module is configured to keep one of the third power selection circuit and the fourth power selection circuit in the on state constantly according to the power re-distribution control instruction and according to the second preset heating power, and the other constant power branch is switched from the on state to the off state, and the corresponding power regulating branch is switched from the off state to the on state.
[0065] In summary, the ultrasonic wind meter can implement different modes of heating according to different heating needs, two groups of relatively independent ohmic elements are arranged in the transmitting disc and the reflecting disc, the normal operation of the ultrasonic wind meter in a low-temperature frozen environment can be ensured, the emergence of the anti-freezing failure is avoided, the two groups of relatively independent ohmic elements in the transmitting disc and the reflecting disc are arranged in a ring shape and are spaced from each other, and the uniformity of heating can be effectively ensured. In an extreme case, even if one group of ohmic elements in the transmitting disc and the reflecting disc cannot work normally, the normal operation of the ultrasonic wind meter in a frozen environment can be effectively ensured.
[0066] As described above, the application is only a specific implementation, but the protection scope of the application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be limited to the protection scope of the claims.
Claims
1. An ultrasonic anemometer, comprising: A base; a transmitting disk fixed on the base, an ultrasonic probe and a pillar are arranged on the top of the transmitting disk; a reflecting disk fixed on the other end of the pillar and used to reflect the ultrasonic signal emitted by the ultrasonic probe; a top cover buckled on the reflecting disk, characterized in that the ultrasonic anemometer further includes: a plurality of first ohmic elements connected in series and a plurality of second ohmic elements connected in series arranged in a ring-shaped manner in the top gap space formed by the top cover and the reflecting disk, and the first ohmic elements and the second ohmic elements are arranged at intervals; and a plurality of third ohmic elements connected in series and a plurality of fourth ohmic elements connected in series arranged in a ring-shaped manner in the top gap space formed by the transmitting disk and the base, and the third ohmic elements and the fourth ohmic elements are arranged at intervals.
2. An ultrasonic anemometer according to claim 1, characterized in that: A control board and an interface board are stacked and electrically connected inside the base, and the control board is electrically connected to the first ohmic element, the second ohmic element, the third ohmic element and the fourth ohmic element respectively.
3. An ultrasonic anemometer according to claim 2, characterized in that: The first ohmic element and the second ohmic element are electrically connected to the corresponding control board through a first busbar provided at the center of the reflective disk; the third ohmic element and the fourth ohmic element are electrically connected to the corresponding control board through a second busbar provided at the center of the emitting disk.
4. The ultrasonic anemometer according to claim 3, characterized in that: The reflective disk is provided with a plurality of annularly arranged grooves suitable for embedding the first ohmic element and the second ohmic element at positions corresponding to the first ohmic element and the second ohmic element. The grooves are combined with the lower end surface of the top cover to form a top gap space. The first ohmic element and the second ohmic element are mounted in the grooves. When the top cover is buckled onto the reflective disk, the restrictions of the top cover and the grooves are constrained by the top gap space formed by the combination of the grooves and the lower end surface of the top cover.
5. An ultrasonic anemometer according to any one of claims 1 to 4, characterized in that: A plurality of annularly arranged grooves suitable for embedding the third ohmic element and the fourth ohmic element are provided at the portion of the lower end of the transmitting disk corresponding to the third ohmic element and the fourth ohmic element. The ultrasonic wind meter step includes a pressure plate fixed to the lower end of the transmitting disk. The third ohmic element and the fourth ohmic element are pressed between the pressure plate and the groove steps. The pressure plate is fixed to the lower end of the transmitting disk.
6. An ultrasonic anemometer according to any one of claims 2 to 4, characterized in that: The ultrasonic anemometer further includes an aviation plug arranged at the bottom of the base and matching the peripheral cable interface. The aviation plug is further electrically connected to the interface board.
7. An ultrasonic anemometer according to any one of claims 2 to 4, characterized in that: The ultrasonic anemometer further includes: a first temperature sensor arranged on the reflecting disk; a second temperature sensor arranged on the transmitting disk; and a signal acquisition board electrically connected to the first temperature sensor and the second temperature sensor; the signal acquisition board is respectively provided with a first temperature signal acquisition module electrically connected to the first temperature sensor and a second temperature signal acquisition module electrically connected to the second temperature sensor.
8. The ultrasonic anemometer according to claim 7, characterized in that: The control board is electrically connected to the interface board and the signal acquisition board and is stacked along the installation direction. The signal acquisition board is arranged above the control board and is parallel to the control board. The interface board is stacked below the control board and is parallel to the control boards.
9. An ultrasonic anemometer according to any one of claims 2 to 4, characterized in that: The ultrasonic anemometer further includes: a timing module arranged on the control panel, which is at least used to feedback to the main control module arranged on the control panel the heating time of the first ohmic element, the second ohmic element, the third ohmic element, and the fourth ohmic element according to the preset constant heating power.
10. The ultrasonic anemometer according to claim 9, characterized in that: The control board is respectively provided with a first power selection circuit electrically connected to the first ohmic element, a second power selection circuit electrically connected to the second ohmic element, a third power selection circuit electrically connected to the third ohmic element, and a fourth power selection circuit electrically connected to the fourth ohmic element; the first power selection circuit, the second power selection circuit, the third power selection circuit, and the fourth power selection circuit are electrically connected to a power distribution module provided on the control board, and the power distribution module is used to respond to the balanced heating control instruction or the power redistribution control instruction generated by the main control module and control the first power selection circuit, the second power selection circuit, the third power selection circuit, and the fourth power selection circuit.
11. The ultrasonic anemometer according to claim 10, characterized in that: A first power selection circuit corresponds to a plurality of first ohmic elements connected in series; a second power selection circuit corresponds to a plurality of second ohmic elements connected in series; a third power selection circuit corresponds to a plurality of third ohmic elements connected in series; a fourth power selection circuit corresponds to a plurality of fourth ohmic elements connected in series; the first power selection circuit, the second power selection circuit, the third power selection circuit and the fourth power selection circuit respectively include a power regulation branch and a constant power branch.
12. The ultrasonic anemometer according to claim 10, characterized in that: The first output end of the first power selection circuit and the second power selection circuit is connected to one end of the current limiting module or the pulse width modulation circuit, and the other end of the current limiting module or the pulse width modulation circuit is connected to the corresponding first ohmic element and the second ohmic element to respectively form the power regulation branches of the first power selection circuit and the second power selection circuit; the second output end of the power selection circuit is directly connected to the other end of the corresponding first ohmic element and the second ohmic element to form a constant power branch.
13. The ultrasonic anemometer according to claim 10, characterized in that: The power regulation branches of the third power selection circuit and the fourth power selection circuit are configured as adjustable resistance circuits. The first output ends of the third power selection circuit and the fourth power selection circuit are connected to one end of the adjustable resistance circuit, and the other end of the adjustable resistance circuit is connected to the corresponding third ohmic element and the fourth ohmic element to respectively constitute the power regulation branches of the third power selection circuit and the fourth power selection circuit; the second output end of the power selection circuit is directly connected to the other end of the corresponding third ohmic element and the fourth ohmic element to constitute a constant power branch.