A deep ground wind speed measurement system and method considering temperature and humidity correction

Abstract

A deep-earth wind speed testing system and method considering temperature and humidity corrections are disclosed. The system includes an anemometer body, a ball probe, an anemometer circuit, a temperature sensor, a humidity sensor, and a testing rod. The anemometer circuit, built into the anemometer body, includes a memory, a microprocessor, a wind speed measurement unit, a temperature correction unit, and a humidity correction unit. The method establishes temperature and humidity correction models by considering the temperature-resistance-voltage and humidity-capacitance-voltage relationships. By applying temperature and humidity dual corrections to the voltage values ​​of the measurement models, the system effectively reduces wind speed measurement deviations caused by environmental factors, improving measurement accuracy. The microprocessor in the anemometer circuit rapidly receives and processes temperature and humidity data, calculates correction factors based on preset functions, and automatically corrects the wind speed measurements, improving testing efficiency. This invention is suitable for deep-earth high-temperature and high-humidity environments, meeting the requirements for accuracy and stability in wind speed testing.

Description

Technical Field

[0001] This invention relates to a deep-ground wind speed testing system and method that takes temperature and humidity correction into account, belonging to the field of wind speed measurement technology. Background Technology

[0002] Thermal anemometers are widely used in industry for measuring fluid velocity and flow rate. Deep space exhibits significant characteristics of high temperature, high wind speed, and high humidity. Under high-temperature conditions, the electronic components inside the instrument are highly susceptible to performance degradation due to adverse temperature effects, causing their operating parameters to drift and reducing measurement reliability. High humidity environments cause changes in air physical parameters, altering the range of variation for internal electronic components and increasing measurement errors.

[0003] Existing hot-wire anemometers can solve the interference from support vibration and static pressure pulsation caused by compressible flow in high-speed flow field measurements, but they cannot accurately correct measurement deviations caused by environmental factors. They are difficult to measure wind speed stably and accurately in complex and variable deep underground environments, and cannot provide reliable data support for the efficient operation and safety of underground ventilation systems. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a deep-earth wind speed testing system and method that takes into account temperature and humidity correction. This wind speed testing system and method takes into account temperature and humidity correction, is suitable for deep-earth high-temperature and high-humidity environments, and meets the requirements for accuracy and stability of wind speed testing.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a deep-ground wind speed testing system considering temperature and humidity correction, including a wind speed meter body, and also including a ball probe, a wind speed meter circuit, a temperature sensor, a humidity sensor and a test rod; the wind speed meter circuit is built into the wind speed meter body and includes a storage device, a microprocessor, a wind speed measurement unit, a temperature correction unit and a humidity correction unit.

[0006] The microprocessor receives the wind speed value transmitted by the wind speed measurement unit, combines it with the correction values ​​transmitted by the temperature correction unit and the humidity correction unit, adjusts the wind speed measurement unit, performs temperature and humidity correction on the wind speed, and transmits the processed data to the storage unit; the storage unit stores the measurement data in chronological order and transmits it to the ground monitoring center to realize remote monitoring and management of the data, facilitating subsequent query and analysis.

[0007] The anemometer body, ball probe, temperature sensor, and humidity sensor are connected by a circuit; the ball probe is equipped with a heating element and a heatable speed sensor, which are connected together; the ball probe is placed on the top of the test rod, and the bottom of the test rod is electrically connected to the anemometer body through a transmission line.

[0008] Furthermore, the wind speed measurement unit employs a Wheatstone bridge, including resistors R2, R3, R4, and a speed sensor resistor R. s By changing the resistance value, the speed sensor resistance R s The range varies within a set range; the Wheatstone bridge is powered by a power supply, and the output voltage of the digital-to-analog converter is adjusted by resistor R1 and then input to the non-inverting input terminal of the servo amplifier to make the bridge reach a balanced state.

[0009] The temperature correction unit includes a temperature converter and a temperature sensor. The temperature sensor measures the air temperature, and the temperature converter converts the temperature signal into a digital signal and transmits it to the microprocessor. The microprocessor controls the output voltage of the digital-to-analog converter according to the temperature correction model to achieve temperature correction.

[0010] The humidity correction unit includes a capacitor-to-voltage converter and a humidity sensor. The humidity sensor measures the air humidity, and the capacitor-to-voltage converter converts the humidity signal into a digital signal and transmits it to the microprocessor. The microprocessor controls the output voltage of the digital-to-analog converter according to the humidity correction model to achieve humidity correction.

[0011] The resistance value of resistor R1 is strictly calibrated. Based on the output voltage of the digital-to-analog converter, it affects the non-inverting input of the servo amplifier, thereby adjusting the power supply voltage and output voltage of the bridge. E DAC With bridge output voltage E B satisfy E DAC =η E B Where η is the normalized voltage ratio of the DAC output. η =DAC input digital code / 2 N N represents the number of bits in the DAC. This is achieved by using a specific resistor R1 and changing the resistance R of the speed sensor. s The resistance value ensures that the four arms of the bridge satisfy the balance condition, that is... When the bridge reaches a balanced state, the input of the servo amplifier is zero or in a stable state.

[0012] Furthermore, the surface of the ball probe is coated with a vacuum coating; the temperature sensor is a thermistor, located in the middle of the test rod, used to measure air temperature and perform temperature correction on the speed measurement; the humidity sensor is a thermistor, located in the middle of the test rod, used to measure air humidity and perform humidity correction on the speed measurement.

[0013] Furthermore, the anemometer body also includes an LCD screen and a wireless communication module. The microprocessor is used to receive and process the wind speed value and environmental data after temperature and humidity correction, transmit the measurement data to the storage and LCD screen, and transmit the measurement data to the ground monitoring center through the wireless communication module.

[0014] A method for testing deep-ground wind speed considering temperature and humidity correction includes the following steps:

[0015] S1. Construct the test model;

[0016] S2. Measure the wind speed at the test site;

[0017] S3. Correct for temperature and humidity included in the measured wind speed;

[0018] S4. Correct the voltage value of the measurement model according to the correction factor;

[0019] S5. Based on the relationship between voltage and flow velocity, determine the final corrected wind speed value.

[0020] Furthermore, the test model in S1 includes a wind speed test unit, a temperature correction unit, and a humidity correction unit. The wind speed test unit includes a ball probe and a wind speed test circuit, the temperature correction unit includes a temperature sensor and a temperature correction circuit, and the humidity correction unit includes a humidity sensor and a humidity correction circuit.

[0021] Furthermore, the specific process of S2 is as follows: the wind speed testing system is placed in the test field, the heating element in the ball probe is heated, and after preheating, the wind speed testing unit begins to measure.

[0022] Furthermore, the specific process of S3 is as follows:

[0023] S3.1 When airflow passes over the heating element, the surface temperature of the ball probe changes, causing a change in the resistance value of the wind speed testing circuit. After processing by the circuit, this change is transmitted to the microcontroller, which then determines the resistance based on the function of fluid velocity, current, and hot wire temperature. u = f ( E c , T w ), calculate the required wind speed value, where u is the wind speed, E c For the corrected voltage, T w This refers to the temperature of the hot wire.

[0024] S3.2 The method by which the temperature correction unit corrects the real-time ambient temperature is as follows: based on the heat dissipation power of the hot-wire anemometer. QWith gas thermal conductivity k ( T f It is directly proportional to the voltage and satisfies the following relationship: ,in E Uncorrected voltage T f The air temperature; given the air temperature T f At that time, according to Obtain resistance R Then, combining the temperature-resistance-voltage relationship, the temperature correction model is derived as follows: ,in T 0 is the reference temperature. R 0 is the reference resistance value at the reference temperature. θ Let be the temperature coefficient of resistance; considering the effect of air temperature changes on thermal conductivity, the temperature correction function for thermal conductivity is: And calculate the temperature correction factor. This facilitates the correction of velocity deviations caused by temperature changes; among which, S It is Sutherland's constant; k ( T cal () represents the thermal conductivity of air at the calibration temperature;

[0025] S3.3 The method by which the humidity correction unit corrects the real-time collected ambient humidity is as follows: based on the anemometer's heat dissipation power... Q With gas heat capacity c p and thermal conductivity k The ratio is related to: Given that the humidity is H At that time, through the capacitance humidity characteristics and charge / discharge equations Based on the humidity-capacitance-voltage relationship, the humidity correction model is derived as follows: Considering the relationship between humidity changes and thermal conductivity and heat capacity, the correction factor is: This facilitates the correction of speed deviations caused by humidity changes; among which, C This represents the capacitance value of the humidity sensor under the current humidity conditions. C 0 represents the initial capacitance value; ξ Humidity-capacitance conversion factor; E t For the time elapsed t The voltage value reached across the capacitor; E p This refers to the power supply voltage. t This refers to charging time; R c This represents the total resistance in the circuit.c p,水蒸气 The specific heat capacity of water vapor at ambient temperature. c p,干空气 This is the specific heat capacity of dry air at ambient temperature.

[0026] Furthermore, the specific process of S4 is as follows: Integrating the correction factor. M = A · B The output voltage is then calculated by the microprocessor as follows: ,in E Uncorrected voltage E c To correct the voltage and achieve synchronous compensation for measurement errors caused by temperature and humidity coupling effects.

[0027] Furthermore, the specific process of S5 is as follows: since there is a functional relationship between speed and voltage... u = f ( E c , T w (This is based on prior measurements, collecting multiple sets of wind speed and corresponding voltage data, and then fitting the data to obtain...) E c = αu+β， in α Voltage-wind speed ratio coefficient and β The offset coefficients are calculated from the regression results of measured data. The microprocessor uses the corrected voltage in S4. E c , bring in u =( E c - β ) / α The final wind speed value is obtained.

[0028] This invention establishes temperature and humidity correction models by considering the temperature-resistance-voltage and humidity-capacitance-voltage relationships. These corrections effectively reduce wind speed measurement deviations caused by environmental factors, significantly improving measurement accuracy. The microprocessor in the anemometer circuit rapidly receives and processes temperature and humidity data, calculates correction factors based on preset functions, and automatically corrects the wind speed measurements, improving testing efficiency and enabling intelligent operation. This invention is suitable for deep-earth high-temperature and high-humidity environments, meeting the requirements for accuracy and stability in wind speed testing. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the system structure of the present invention;

[0030] Figure 2This is a schematic diagram of the connection relationship of the anemometer circuit of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the ball probe of the present invention;

[0032] Figure 4 This is a schematic diagram showing the connection relationship between the microprocessor of the present invention and the wind speed measurement unit, temperature correction unit and humidity correction unit;

[0033] Figure 5 This is a flowchart of the method of the present invention.

[0034] In the diagram: 1. Anemometer body, 101. LCD screen, 102. Wireless communication module, 103. Operation buttons; 2. Ball probe, 201. Heating element, 202. Heated speed sensor, 203. Vacuum coating.

[0035] 3. Anemometer circuit: 301, Memory; 302, Microprocessor; 303, Wind speed measurement unit; 303a, Resistor R2; 303b, Resistor R3; 303c, Resistor R4; 303d, Speed ​​sensor resistor R. s 303e, power supply; 303f, digital-to-analog converter; 303g, resistor R1; 303h, servo amplifier;

[0036] 304. Temperature correction unit; 304a. Temperature converter; 305. Humidity correction unit; 305a. Capacitor-to-voltage converter; 4. Temperature sensor; 5. Humidity sensor; 6. Test rod; 7. Transmission line. Detailed Implementation

[0037] The invention will now be further described with reference to the accompanying drawings.

[0038] like Figure 1 and Figure 2 As shown, the present invention provides a deep-ground wind speed testing system that takes temperature and humidity correction into account, including an anemometer body 1, a ball probe 2, an anemometer circuit 3, a temperature sensor 4, a humidity sensor 5, and a test rod 6; the anemometer circuit 3 is built into the anemometer body 1 and includes a storage device 301, a microprocessor 302, a wind speed measurement unit 303, a temperature correction unit 304, and a humidity correction unit 305;

[0039] The microprocessor 302 receives the wind speed value transmitted by the wind speed measurement unit 303, and adjusts the wind speed measurement unit 303 in conjunction with the correction values ​​transmitted by the temperature correction unit 304 and the humidity correction unit 305 to achieve temperature and humidity correction of the wind speed and transmit the processed data to the storage unit 301. The storage unit 301 stores the measurement data in chronological order and transmits it to the ground monitoring center to realize remote monitoring and management of the data, which is convenient for subsequent query and analysis.

[0040] like Figure 1 and Figure 3 As shown, the anemometer body 1, the ball probe 2, the temperature sensor 4, and the humidity sensor 5 are connected by a circuit; the ball probe 2 is equipped with a heating element 201 and a heatable speed sensor 202, which are connected together; the ball probe 2 is placed on the top of the test rod 6, and the bottom of the test rod 6 is electrically connected to the anemometer body 1 through a transmission line 7.

[0041] like Figure 4 As shown, in a preferred embodiment, the wind speed measurement unit 303 employs a Wheatstone bridge, including resistors R2303a, R3303b, R4303c, and a speed sensor resistor R. s 303d, by changing the resistance value, the speed sensor resistance R... s 303d varies within a certain range; the Wheatstone bridge is powered by power supply 303e, and the output voltage of the digital-to-analog converter 303f is adjusted by a specific resistor R1303g and then input to the non-inverting input terminal of the servo amplifier 303h to make the bridge reach a balanced state.

[0042] The temperature correction unit 304 includes a temperature converter 304a and a temperature sensor 4. The temperature sensor 4 measures the air temperature, and the temperature converter 304a converts the temperature signal into a digital signal and transmits it to the microprocessor 302. The microprocessor 302 controls the output voltage of the digital-to-analog converter 303f according to the temperature correction model to achieve temperature correction.

[0043] The humidity correction unit 305 includes a capacitor-to-voltage converter 305a and a humidity sensor 5. The humidity sensor 5 measures the air humidity, and the capacitor-to-voltage converter 305a converts the humidity signal into a digital signal and transmits it to the microprocessor 302. The microprocessor 302 controls the output voltage of the digital-to-analog converter 303f according to the humidity correction model to achieve humidity correction.

[0044] To further improve the anti-contamination capability of the ball probe 2 and reduce the impact of thermal radiation on the accuracy of speed and temperature measurements, the surface of the ball probe 2 is coated with a vacuum coating 203; the temperature sensor 4 is a thermistor, located in the middle of the test rod 6, used to measure air temperature and perform temperature correction for speed measurements; the humidity sensor 5 is a thermistor, located in the middle of the test rod 6, used to measure air humidity and perform humidity correction for speed measurements.

[0045] In a preferred embodiment, the anemometer body 1 further includes an LCD screen 101 and a wireless communication module 102. The LCD screen 101 and operation buttons 103 are integrated on the front of the anemometer body 1, and the wireless communication module 102 is placed on the back of the anemometer body 1. The anemometer circuit 3 transmits the collected data to the LCD screen 101 and transmits it to the ground through the wireless communication module 102. The microprocessor 302 is used to receive and process the wind speed value and environmental data after temperature and humidity correction, transmit the measurement data to the storage 301 and the LCD screen 101, and transmit the measurement data to the ground monitoring center through the wireless communication module 102.

[0046] like Figure 5 As shown, a deep-ground wind speed testing method considering temperature and humidity correction includes the following steps:

[0047] S1. Construct the test model;

[0048] S2. Measure the wind speed at the test site;

[0049] S3. Correct for temperature and humidity included in the measured wind speed;

[0050] S4. Correct the voltage value of the measurement model according to the correction factor;

[0051] S5. Based on the relationship between voltage and flow velocity, determine the final corrected wind speed value.

[0052] Example: Assume the calibration temperature is 5 ℃, the relative humidity is 30%, the actual measured temperature is 35 ℃, the relative humidity is 85%, the temperature sensor accuracy is ±0.3 ℃, the humidity sensor accuracy is ±2%RH, and the actual measured wind speed is 10m / s.

[0053] (1) Calculation of uncorrected error:

[0054] Error caused by temperature change: The thermal conductivity of air at 5 ℃ and 35 ℃ is 0.0237 W / (m·K) and 0.0261 W / (m·K) respectively, with an error of 9.2% in thermal conductivity;

[0055] Humidity changes cause errors: ;

[0056] The total uncorrected error is 11.1%.

[0057] (2) Calculation of the corrected error

[0058] Thermal conductivity correction factor: A = 0.935;

[0059] Hot melt correction factor: B=0.978;

[0060] Overall correction factor: C=AB=0.914;

[0061] The corrected output is 10.15 m / s, and the error is... δ 1 is 1.5%;

[0062] (3) Sensor error calculation

[0063] Temperature measurement error: The thermal conductivity of air increases by approximately 0.266% for every 1°C increase around 5°C. Therefore: ;

[0064] Humidity measurement error: specific heat capacity of moist air c p At a relative humidity of around 30%, for every 1% increase in relative humidity, the coefficient of variation increases by approximately 0.0005. ;

[0065] Sensor total error δ 2 is 0.13%; therefore, the final error is... δ It is 1.5%.

[0066] Therefore, compared to the 11.1% measurement error of traditional anemometers, the correction method proposed in this invention, when applied to anemometers, reduces the error to 1.5%.

Claims

1. A deep-ground wind speed testing system considering temperature and humidity correction, comprising a wind speed meter body (1), characterized in that, It also includes a ball probe (2), an anemometer circuit (3), a temperature sensor (4), a humidity sensor (5), and a test rod (6); the anemometer circuit (3) is built into the anemometer body (1) and includes a storage device (301), a microprocessor (302), a wind speed measurement unit (303), a temperature correction unit (304), and a humidity correction unit (305); The microprocessor (302) is used to receive the wind speed value transmitted by the wind speed measurement unit (303), and adjust the wind speed measurement unit (303) in combination with the correction value transmitted by the temperature correction unit (304) and the humidity correction unit (305) to realize temperature and humidity correction of the wind speed and transmit the processed data to the storage unit (301); the storage unit (301) stores the measurement data in chronological order and transmits it to the ground monitoring center to realize remote monitoring and management of the data, which is convenient for subsequent query and analysis; The anemometer body (1), ball probe (2), temperature sensor (4), and humidity sensor (5) are connected by a circuit; the ball probe (2) is equipped with a heating element (201) and a heatable speed sensor (202) inside, and the heating element (201) and the heatable speed sensor (202) are connected; the ball probe (2) is placed on the top of the test rod (6), and the bottom of the test rod (6) is electrically connected to the anemometer body (1) through a transmission line (7); The wind speed measurement unit (303) uses a Wheatstone bridge, including resistors R2 (303a), R3 (303b), R4 (303c) and a speed sensor resistor R. s (303d) By changing the resistance value, the speed sensor resistance R s (303d) varies within a set range; the Wheatstone bridge is powered by power supply (303e), and the output voltage of the digital-to-analog converter (303f) is adjusted by resistor R1 (303g) and then input to the non-inverting input terminal of the servo amplifier (303h) to make the bridge reach a balanced state; The temperature correction unit (304) includes a temperature converter (304a) and a temperature sensor (4). The temperature sensor (4) measures the air temperature. The temperature converter (304a) converts the temperature signal into a digital signal and transmits it to the microprocessor (302). The microprocessor (302) controls the output voltage of the digital-to-analog converter (303f) according to the temperature correction model to achieve temperature correction. The humidity correction unit (305) includes a capacitor-to-voltage converter (305a) and a humidity sensor (5). The humidity sensor (5) measures the air humidity. The capacitor-to-voltage converter (305a) converts the humidity signal into a digital signal and transmits it to the microprocessor (302). The microprocessor (302) controls the output voltage of the digital-to-analog converter (303f) according to the humidity correction model to achieve humidity correction. The resistance value of resistor R1 (303g) is calibrated. Based on the output voltage of the digital-to-analog converter (303f), the non-inverting input of the servo amplifier (303h) is affected, and the supply voltage of the bridge is adjusted, resulting in the output voltage E. DAC With bridge output voltage E B Satisfy E DAC =ηE B Where η is the normalized voltage ratio of the DAC output, η = DAC input digital code / 2 N N represents the number of bits in the DAC; using resistor R1 (303g) and changing the speed sensor resistor R s The resistance value (303d) ensures that the four arms of the bridge satisfy the balance condition, i.e., R S / R2=(R1 / R3+η) / (1+R1 / R4-η), when the bridge reaches a balanced state, the input of the servo amplifier is zero or in a stable state.

2. The deep-ground wind speed testing system considering temperature and humidity correction according to claim 1, characterized in that, The ball probe (2) is coated with a vacuum coating (203); the temperature sensor (4) is a thermistor and the humidity sensor (5) is a thermistor, which are integrated in the middle of the test rod (6).

3. The deep-ground wind speed testing system considering temperature and humidity correction according to claim 1 or the above, characterized in that, The anemometer body (1) also includes an LCD screen (101) and a wireless communication module (102). The microprocessor (302) is used to receive and process the wind speed value and environmental data after temperature correction and humidity correction, transmit the measurement data to the storage (301) and LCD screen (101), and transmit the measurement data to the ground monitoring center through the wireless communication module (102).

4. A method for testing deep-ground wind speed considering temperature and humidity correction, characterized in that, The steps include: S1. Construct the test model; S2. Measure the wind speed at the test site; S3. Correct for temperature and humidity included in the measured wind speed; S4. Correct the voltage value of the measurement model according to the correction factor; S5. Based on the relationship between voltage and flow velocity, determine the final corrected wind speed value; The specific process of S3 is as follows: S3.1 When the airflow passes over the heating element, the surface temperature of the ball probe (2) changes, causing a change in the resistance value of the wind speed testing circuit. After being processed by the circuit, the value is transmitted to the microprocessor. Based on the function u = f(E) of fluid velocity, voltage, and hot wire temperature, the value is determined. c ,T w ), calculate the wind speed value, where u is the wind speed, E c For the corrected voltage, T w This refers to the temperature of the hot wire. S3.2, The method by which the temperature correction unit (304) corrects the real-time ambient temperature is as follows: based on the heat dissipation power Q of the hot-wire anemometer and the gas thermal conductivity k (T f It is directly proportional to the voltage and satisfies the following relationship: Where E is the uncorrected voltage, and T f Let T be the air temperature; given the air temperature T f At that time, according to R = R0(1 + θ(T) f -T0)) gives the resistance R, and then, combined with the temperature-resistance-voltage relationship, the temperature correction model is derived as follows: Where T0 is the reference temperature, R0 is the reference resistance value at the reference temperature, and θ is the temperature coefficient of the resistance; considering the effect of air temperature change on thermal conductivity, the thermal conductivity temperature correction function is k(T f )=k ref (T f / T0) 3 / 2 ((T0+S) / (T f +S)), and calculate the temperature correction factor. Where S is the Sutherland constant, k(T) cal () represents the thermal conductivity of air at the calibration temperature; S3.3 The method by which the humidity correction unit (305) corrects the real-time collected ambient humidity is as follows: based on the anemometer's heat dissipation power Q and the gas heat capacity c p Related to the ratio of thermal conductivity k: Given the humidity as H, the capacitance humidity characteristic C = C0 + ξH and the charging and discharging equations are used. Based on the humidity-capacitance-voltage relationship, the humidity correction model is derived as follows: Considering the relationship between humidity change and thermal conductivity and heat capacity, the correction factor is: Where C is the capacitance value of the humidity sensor (5) under the current humidity conditions; C0 is the initial capacitance value; ξ is the humidity-capacitance conversion coefficient; E t E represents the voltage across the capacitor after time t. p R is the power supply voltage; t is the charging time; c c is the total resistance in the circuit. p,水蒸气 c is the specific heat capacity of water vapor at ambient temperature. p,干空气 This is the specific heat capacity of dry air at ambient temperature.

5. The deep-ground wind speed testing method considering temperature and humidity correction according to claim 4, characterized in that, The test model in S1 includes a wind speed test unit, a temperature correction unit (304) and a humidity correction unit (305). The wind speed test unit includes a ball probe (2) and a wind speed test circuit. The temperature correction unit (304) includes a temperature sensor (4) and a temperature correction circuit. The humidity correction unit (305) includes a humidity sensor (5) and a humidity correction circuit.

6. The deep-ground wind speed testing method considering temperature and humidity correction according to claim 5, characterized in that, The specific process of S2 is as follows: the wind speed testing system is placed in the test field, the heating element in the ball probe (2) is heated, and after the preheating is completed, the wind speed testing unit starts to measure.

7. The deep-ground wind speed testing method considering temperature and humidity correction according to claim 4, characterized in that, The specific process of S4 is as follows: Given the comprehensive correction factor M = A·B, the output voltage is calculated as E by the microprocessor (302). c =E×M, where E is the uncorrected voltage, E c This is the corrected voltage.

8. The deep-ground wind speed testing method considering temperature and humidity correction according to claim 4, characterized in that, The specific process of S5 is as follows: according to the function u = f(E) c ,T w ), multiple sets of wind speeds and corresponding voltages were collected in advance through actual measurements, and E was obtained by fitting. c =αu+β, where α is the voltage-wind speed proportionality coefficient and β is the offset coefficient, which is obtained by regression from measured data; The microprocessor (302) uses the corrected voltage E in S4 c , bring in u=(E c The final wind speed value is obtained by subtracting -β) / α.

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