High-torque valve torque measuring system and method based on strain gauges

Abstract

The invention provides a high-torque valve torque measuring system and method based on strain gauges. The high-torque valve torque measuring system comprises a torque sensor module, a signal conditioning module, a data acquisition module, a data processing module and a display module. Torque signals generated when the valve rotates are accurately measured through the strain gauge type torque sensor module, and a more accurate torque value can be obtained through signal conditioning. The signal conditioning module carries out amplification, filtering and linearization processing on an electric signal output by the torque sensor, and the quality and stability of the signal are improved. And the temperature compensation module performs temperature compensation on the torque measurement value, so that the measurement accuracy is improved. And the encryption module encrypts sensitive data in the measurement system, so that the security of the measurement data and system parameters is effectively protected, and data leakage and tampering are prevented. And the remote control module enables an operator to receive a remote control instruction through a network to remotely operate the valve, so that the convenience and the flexibility of operation are improved.

Description

Technical Field

[0001] The present invention relates to the field of high-torque valve torque measurement systems, and in particular to a high-torque valve torque measurement system and method based on strain gauges. Background Art

[0002] In industrial production and engineering applications, valves are widely used control devices to regulate the flow, pressure and direction of fluids. The torque of a valve is an important parameter that reflects the amount of force required during the operation of the valve. Accurately measuring valve torque is important for ensuring the normal operation of the valve, optimizing the operating process, and performing equipment maintenance and fault diagnosis.

[0003] A valve torque measurement and analysis method and system proposed in Chinese invention patent application number: CN202311595984.8, the steps of the method include: collecting motor control parameters and valve parameters of the valve controller; measuring the first valve torque under different parameters through a torque sensor, and when the valve torque reaches the upper limit of the torque sensor measurement, obtaining the second valve torque through a torque adaptive algorithm; optimizing the valve torque, optimizing the valve torque through the first valve torque, the second valve torque and the valve opening and closing degree, and outputting the third valve torque; and performing correlation analysis on the third valve torques of different valves in the same pipeline system.

[0004] However, the existing valve torque measurement has some shortcomings during use and still needs to be improved. The traditional measurement method cannot accurately measure the torque signal when the valve rotates, resulting in large errors in the measurement results, which is difficult to meet the application scenarios with high requirements for torque measurement accuracy. In terms of signal processing, the traditional method cannot effectively amplify, filter and linearize the electrical signal, making the signal quality unstable and easily interfered, thus affecting the reliability of the entire measurement system.

[0005] The existing technology does not consider the influence of temperature factors on torque measurement. When the ambient temperature or the temperature of the valve itself changes, the measurement result will have a large deviation and cannot accurately reflect the actual torque of the valve.

[0006] Traditional measurement methods have loopholes in data security. Sensitive data such as measurement data and system parameters are vulnerable to attack and leakage, bringing potential risks to users. Many existing technologies do not have perfect remote control functions and cannot realize remote operation of valves through the network, which limits the convenience and flexibility of operation.

[0007] Traditional measurement systems lack the ability to analyze measurement data, are unable to deeply mine the information in the data, and are difficult to help users fully understand the working status and performance of the valve, which is not conducive to effective maintenance and management. Due to the lack of in-depth processing and analysis of measurement data, it is difficult for existing technologies to adjust and optimize system parameters according to actual conditions, resulting in difficulty in improving system performance and being unable to adapt to changing work needs. Traditional measurement methods cannot display the torque value and working status information of the valve in real time, making it difficult for operators to understand the operation of the valve in a timely manner, thereby affecting work efficiency and increasing the probability of failure. Therefore, a high-torque valve torque measurement system and method based on strain gauges is proposed. Summary of the invention

[0008] The purpose of the present invention is to solve the problems raised by the existing background technology. In order to achieve the above-mentioned invention purpose, the present invention provides the following technical solutions: a high torque valve torque measurement system based on strain gauge, comprising a torque sensor module, a signal conditioning module, a data acquisition module, a data processing module and a display module, the torque sensor module is provided with a strain gauge torque sensor module, the strain gauge torque sensor module is installed on the rotating shaft of the valve, the strain gauge torque sensor module is used to measure the torque signal generated when the valve rotates, the torque sensor module is connected to the signal conditioning module, the signal conditioning module is used to amplify, filter and linearize the electrical signal output by the torque sensor module, the signal conditioning module is connected to the data acquisition module, the data acquisition module is used to collect and digitize the conditioned signal, and convert the analog signal into a digital signal, the data acquisition module is connected to the data processing module, the data processing module is used to process and analyze the collected data, and calculate the torque value of the valve, the data processing module is connected to the display module, and the display module is used to display the torque value and working status information of the valve.

[0009] As a preferred technical solution of the present invention, the data acquisition module is provided with an analog-to-digital conversion unit, and the analog-to-digital conversion unit samples and quantizes the conditioned signal to convert the analog signal into a digital signal.

[0010] As a preferred technical solution of the present invention, the data processing module includes a central processing unit, a memory and a communication interface, and the central processing unit processes and analyzes the data to calculate the torque value of the valve; The torque value is calculated as follows: ; in is the torque applied to the shaft; Resistance change, Initial resistance when not deformed, is the sensitivity coefficient of the strain gauge, Young's modulus of the material, The diameter of a shaft of circular cross-section, represents the torque correction function, Indicates the output signal correction value of the sensor, is the temperature correction value.

[0011] The memory is used to store programs and data, including measurement data, calibration data and system parameters; the communication interface is used to communicate with external devices and upload the measurement data to the host computer for further analysis and processing.

[0012] As a preferred technical solution of the present invention, it also includes a temperature compensation module, which is provided with a temperature sensor and a compensation algorithm unit. The temperature sensor is used to detect the temperature of the valve and the surrounding environment to provide temperature parameters for torque measurement. The compensation algorithm unit performs temperature compensation on the torque measurement value according to the temperature data collected by the temperature sensor.

[0013] As a preferred technical solution of the present invention, it also includes an encryption module, which encrypts sensitive data in the measurement system, including measurement data and system parameters.

[0014] As a preferred technical solution of the present invention, it also includes a remote control module, which is provided with a remote control unit. The remote control unit receives remote control instructions through the network and remotely operates the valve, and the remote operation includes opening, closing, and adjusting the torque.

[0015] As a preferred technical solution of the present invention, it also includes a data analysis module, wherein the data analysis module is provided with a data statistics unit, and the data statistics unit performs statistical analysis on the measurement data; The data collection variance gap function of the data statistics unit is expressed as: ; Among them, is the i-th type torque measurement acquisition coefficient, is the data collection variance gap function, represents the data collection dataset, Represents the temperature acquisition data set.

[0016] A method for measuring torque of a high torque valve based on a strain gauge comprises the following steps: Step 1. Install the strain gauge torque sensor module: Install the strain gauge torque sensor module on the valve shaft to ensure that it can accurately measure the torque signal generated when the valve rotates.

[0017] Step 2. Connect system components: According to the system design, connect the torque sensor module to the signal conditioning module, the signal conditioning module to the data acquisition module, the data acquisition module to the data processing module, and the data processing module to the display module. At the same time, connect the temperature compensation module, encryption module, remote control module, and data analysis module to the corresponding components.

[0018] Step 3. Signal conditioning: The signal conditioning module amplifies, filters and linearizes the electrical signal output by the torque sensor module to improve the quality and stability of the signal.

[0019] Step 4. Data acquisition and digitization: The analog-to-digital conversion unit in the data acquisition module samples and quantizes the conditioned signal and converts the analog signal into a digital signal.

[0020] Step 5. Temperature measurement and compensation: The temperature sensor in the temperature compensation module detects the temperature of the valve and the surrounding environment. The compensation algorithm unit performs temperature compensation on the torque measurement value based on the temperature data collected by the temperature sensor.

[0021] Step 6. Data processing and analysis: The central processor in the data processing module processes and analyzes the collected data and calculates the torque value of the valve using relevant algorithms. The memory is used to store programs and data, including measurement data, calibration data, and system parameters. The communication interface can upload the measurement data to the host computer for further analysis and processing.

[0022] Step 7. Data encryption: The encryption module encrypts sensitive data in the measurement system, including measurement data and system parameters.

[0023] Step 8. Remote control: The remote control unit in the remote control module receives remote control instructions through the network to remotely operate the valve. The remote operation includes opening, closing, and adjusting the torque.

[0024] Step 9. Data analysis: The data statistics unit in the data analysis module performs statistical analysis on the measurement data.

[0025] Step 10. Result display: The display module is used to display the torque value and working status information of the valve.

[0026] As a preferred technical solution of the present invention, step 5. Step 3. The signal conditioning module conditioning in the signal conditioning is expressed as: Q(t)= + + ; Among them is Signal conditioning scale factor, is the signal conditioning integration coefficient, is the signal conditioning differential coefficient.

[0027] As a preferred technical solution of the present invention, step 7. The encryption function of data encryption is expressed as; ; in is plain text data, is the public key, and the encryption function consists of two large prime numbers and composition, is a random number; The decryption function is expressed as: ; is the key, For encrypted data, Represents the decryption key value.

[0028] Compared with the prior art, the present invention has the following beneficial effects: 1. Improve measurement accuracy: The torque signal when the valve rotates can be accurately measured by the strain gauge torque sensor module. After signal conditioning, data acquisition and processing, a more accurate torque value can be obtained.

[0029] 2. Enhance system stability: The signal conditioning module amplifies, filters and linearizes the electrical signal output by the torque sensor, improving the quality and stability of the signal, making the entire measurement system more reliable.

[0030] 3. Realize temperature compensation: The temperature compensation module can detect the temperature of the valve and the surrounding environment, and perform temperature compensation on the torque measurement value, reducing the influence of temperature factors on the measurement results and improving the accuracy of the measurement.

[0031] 4. Ensure data security: The encryption module encrypts sensitive data in the measurement system, effectively protecting the security of measurement data and system parameters and preventing data leakage and tampering.

[0032] 5. Convenient remote control: The remote control module enables operators to receive remote control instructions through the network and remotely operate the valve, such as opening, closing, and adjusting torque, which improves the convenience and flexibility of operation.

[0033] 6. In-depth data analysis: The data analysis module performs statistical analysis on the measured data, which helps users better understand the working status and performance of the valve and provides data support for the maintenance and management of the valve.

[0034] 7. Optimize system performance: Through the processing and analysis of measurement data, as well as the adjustment and optimization of system parameters, the performance and reliability of the system can be continuously improved and the service life of the valve can be extended.

[0035] 8. Improve work efficiency: The measurement system can display the torque value and working status information of the valve in real time, so that the operator can understand the operation of the valve in time, thereby improving work efficiency and reducing the occurrence of failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The experimental data diagram provided by the present invention; Figure 2 The experimental error diagram provided by the present invention; Figure 3 The present invention provides a flow chart of the method. DETAILED DESCRIPTION

[0037] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0038] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] Embodiment 1: A high-torque valve torque measurement system based on strain gauges, comprising a torque sensor module, a signal conditioning module, a data acquisition module, a data processing module and a display module, wherein the torque sensor module is provided with a strain gauge torque sensor module, the strain gauge torque sensor module is installed on the rotating shaft of the valve, the strain gauge torque sensor module is used to measure the torque signal generated when the valve rotates, the torque sensor module is connected to the signal conditioning module, the signal conditioning module is used to amplify, filter and linearize the electrical signal output by the torque sensor module, the signal conditioning module is connected to the data acquisition module, the data acquisition module is used to collect and digitize the conditioned signal and convert the analog signal into a digital signal, the data acquisition module is connected to the data processing module, the data processing module is used to process and analyze the collected data and calculate the torque value of the valve, the data processing module is connected to the display module, the display module is used to display the torque value and working status information of the valve.

[0040] The data acquisition module is provided with an analog-to-digital conversion unit, which samples and quantizes the conditioned signal and converts the analog signal into a digital signal.

[0041] The data processing module includes a central processing unit, a memory and a communication interface. The central processing unit processes and analyzes the data and calculates the torque value of the valve; The torque value is calculated as: ; in is the torque applied to the shaft; Resistance change, Initial resistance when not deformed, is the sensitivity coefficient of the strain gauge, Young's modulus of the material, The diameter of a shaft of circular cross-section, represents the torque correction function, Indicates the output signal correction value of the sensor, is the temperature correction value.

[0042] The memory is used to store programs and data, including measurement data, calibration data and system parameters; the communication interface is used to communicate with external devices and upload the measurement data to the host computer for further analysis and processing.

[0043] The temperature compensation module is provided with a temperature sensor and a compensation algorithm unit. The temperature sensor is used to detect the temperature of the valve and the surrounding environment and provide temperature parameters for torque measurement. The compensation algorithm unit performs temperature compensation on the torque measurement value according to the temperature data collected by the temperature sensor.

[0044] The encryption module encrypts sensitive data in the measurement system, including measurement data and system parameters.

[0045] The remote control module is provided with a remote control unit, which receives remote control instructions through the network and remotely operates the valve, including opening, closing and adjusting the torque.

[0046] It also includes a data analysis module, which is provided with a data statistics unit, and the data statistics unit performs statistical analysis on the measurement data; The data collection variance gap function of the data statistics unit is expressed as: ; Among them, is the i-th type torque measurement acquisition coefficient, is the data collection variance gap function, represents the data collection dataset, Represents the temperature acquisition data set.

[0047] The working principle of the high torque valve torque measurement system based on strain gauges is as follows: When the valve rotates, the strain gauge torque sensor module installed on the valve shaft will measure the torque signal generated. This torque signal is an electrical signal and is transmitted to the signal conditioning module.

[0048] The signal conditioning module amplifies, filters and linearizes the received electrical signal to improve the quality and stability of the signal.

[0049] The conditioned signal enters the data acquisition module. The analog-to-digital conversion unit in the data acquisition module samples and quantizes the signal and converts the analog signal into a digital signal.

[0050] The digital signal is then transmitted to the data processing module. The central processor in the data processing module uses the torque value calculation formula: ; in is the torque applied to the shaft; Resistance change, Initial resistance when not deformed, is the sensitivity coefficient of the strain gauge, Young's modulus of the material, The diameter of a shaft of circular cross-section, represents the torque correction function, Indicates the output signal correction value of the sensor, is the temperature correction value.

[0051] The memory is used to store programs and data, including measurement data, calibration data and system parameters. The communication interface is used to communicate with external devices and upload measurement data to the host computer for further analysis and processing.

[0052] The temperature sensor in the temperature compensation module detects the temperature of the valve and the surrounding environment, providing temperature parameters for torque measurement. The compensation algorithm unit performs temperature compensation on the torque measurement value based on the temperature data collected by the temperature sensor to improve the accuracy of the measurement.

[0053] The encryption module encrypts sensitive data in the measurement system, such as measurement data and system parameters, to ensure data security.

[0054] The remote control unit in the remote control module receives remote control instructions through the network to realize remote operation of the valve, including opening, closing, and adjusting torque functions.

[0055] The data statistics unit in the data analysis module performs statistical analysis on the measured data, and its data acquisition variance gap function is expressed as: ; Among them, is the i-th type torque measurement acquisition coefficient, is the data collection variance gap function, represents the data collection dataset, Represents the temperature acquisition data set.

[0056] Finally, the calculated valve torque value and working status information are displayed through the display module so that users can intuitively understand the operation of the valve. Embodiment 2: A method for measuring torque of a high torque valve based on a strain gauge, comprising the following steps: Step 1. Install the strain gauge torque sensor module: Install the strain gauge torque sensor module on the valve shaft to ensure that it can accurately measure the torque signal generated when the valve rotates.

[0057] Step 2. Connect system components: According to the system design, connect the torque sensor module to the signal conditioning module, the signal conditioning module to the data acquisition module, the data acquisition module to the data processing module, and the data processing module to the display module. At the same time, connect the temperature compensation module, encryption module, remote control module, and data analysis module to the corresponding components.

[0058] Step 3. Signal conditioning: The signal conditioning module amplifies, filters and linearizes the electrical signal output by the torque sensor module to improve the quality and stability of the signal.

[0059] Step 4. Data acquisition and digitization: The analog-to-digital conversion unit in the data acquisition module samples and quantizes the conditioned signal and converts the analog signal into a digital signal.

[0060] Step 5. Temperature measurement and compensation: The temperature sensor in the temperature compensation module detects the temperature of the valve and the surrounding environment. The compensation algorithm unit performs temperature compensation on the torque measurement value based on the temperature data collected by the temperature sensor.

[0061] Step 6. Data processing and analysis: The central processor in the data processing module processes and analyzes the collected data and calculates the torque value of the valve using relevant algorithms. The memory is used to store programs and data, including measurement data, calibration data, and system parameters. The communication interface can upload the measurement data to the host computer for further analysis and processing.

[0062] Step 7. Data encryption: The encryption module encrypts sensitive data in the measurement system, including measurement data and system parameters.

[0063] Step 8. Remote control: The remote control unit in the remote control module receives remote control instructions through the network to remotely operate the valve. The remote operation includes opening, closing, and adjusting the torque.

[0064] Step 9. Data analysis: The data statistics unit in the data analysis module performs statistical analysis on the measurement data.

[0065] Step 10. Result display: The display module is used to display the torque value and working status information of the valve.

[0066] As a preferred technical solution of the present invention, step 5. Step 3. The signal conditioning module conditioning in the signal conditioning is expressed as: Q(t)= + + ; Among them is Signal conditioning scale factor, is the signal conditioning integration coefficient, is the signal conditioning differential coefficient.

[0067] As a preferred technical solution of the present invention, step 7. The encryption function of data encryption is expressed as; ; in is plain text data, is the public key, and the encryption function consists of two large prime numbers and composition, is a random number; The decryption function is expressed as: ; is the key, For encrypted data, Represents the decryption key value.

[0068] The torque sensor module adopts a strain gauge torque sensor module, which is installed on the valve shaft to measure the torque signal generated when the valve rotates; The strain gauge is attached to the elastic shaft of the torque sensor module. When the elastic shaft is subjected to torque, the resistance value of the strain gauge changes, thereby converting the torque signal into an electrical signal. The elastic shaft is made of high-strength alloy steel, has good elasticity and wear resistance, and can withstand high torque; The shell is made of aluminum alloy, which has good protection performance and can protect the components inside the torque sensor module from the influence of the external environment; The signal conditioning module is connected to the torque sensor module and is used to amplify, filter and linearize the electrical signal output by the torque sensor module to improve the quality and stability of the signal; The amplifier uses a high-precision operational amplifier to amplify the weak electrical signal output by the torque sensor module to increase the amplitude of the signal; The filter uses a low-pass filter to filter the amplified signal to remove noise and interference in the signal; The linearization circuit uses hardware or software to linearize the filtered signal to improve the precision and accuracy of the signal; The data acquisition module is connected to the signal conditioning module and is used to collect and digitize the conditioned signal and convert the analog signal into a digital signal; The analog-to-digital converter uses a high-precision analog-to-digital converter to sample and quantize the conditioned signal and convert the analog signal into a digital signal; The sample-and-hold circuit is used to keep the signal stable when the analog-to-digital converter is sampling, so as to improve the sampling precision and accuracy; The data buffer is used to store the collected data so that the data processing module can process and analyze it; The data processing module is connected to the data acquisition module and is used to process and analyze the collected data, calculate the torque value of the valve, and send the result to the display module; The central processing unit uses a high-performance microcontroller, which is responsible for processing and analyzing the data and calculating the torque value of the valve; The memory is used to store programs and data, including measurement data, calibration data and system parameters; The communication interface is used to communicate with external devices, such as uploading measurement data to a host computer for further analysis and processing; The display module is connected to the data processing module to display the torque value and working status information of the valve so that the operator can perform real-time monitoring and control; The display module is provided with a driving circuit for driving the liquid crystal display screen, and converting the signal output by the data processing module into a signal that can be recognized by the liquid crystal display screen.

[0069] The strain gauge based method for measuring torque in high torque valves works as follows: First, the strain gauge torque sensor module is installed on the valve shaft so that it can accurately sense the torque signal generated when the valve rotates.

[0070] Then, according to the system design, the modules are connected. The torque sensor module transmits the measured electrical signal to the signal conditioning module.

[0071] The signal conditioning module amplifies, filters and linearizes the electrical signal. The conditioning process can be expressed as: Q(t)= + + ; Among them is Signal conditioning scale factor, is the signal conditioning integration coefficient, is the signal conditioning differential coefficient.

[0072] The conditioned signal enters the data acquisition module, where the analog-to-digital conversion unit samples and quantizes the signal, converting the analog signal into a digital signal.

[0073] At the same time, the temperature sensor in the temperature compensation module detects the temperature of the valve and the surrounding environment. The compensation algorithm unit performs temperature compensation on the torque measurement value based on the collected temperature data to improve the measurement accuracy.

[0074] The data acquisition module transmits the digitized signal to the data processing module. The central processor in the data processing module processes and analyzes the data using relevant algorithms to calculate the torque value of the valve: ; in is the torque applied to the shaft; Resistance change, Initial resistance when not deformed, is the sensitivity coefficient of the strain gauge, Young's modulus of the material, The diameter of a shaft of circular cross-section, represents the torque correction function, Indicates the output signal correction value of the sensor, is the temperature correction value. The memory is used to store programs and data, and the communication interface can upload the measured data to the host computer for more in-depth analysis and processing.

[0075] The encryption module encrypts sensitive data in the measurement system, such as measurement data and system parameters. The encryption function is: ; in is plain text data, is the public key, and the encryption function consists of two large prime numbers and composition, is a random number; The decryption function is expressed as: ; is the key, For encrypted data, The remote control unit in the remote control module receives remote control instructions through the network to realize remote operation of the valve, including opening, closing, and adjusting torque.

[0076] The data statistics unit in the data analysis module performs statistical analysis on the measurement data.

[0077] Finally, the display module shows the valve's torque value and working status information to the user.

[0078] Experimental example: Experimental purpose: To verify the accuracy and reliability of the torque measurement method of high torque valve based on strain gauge.

[0079] Experimental equipment: 1. High torque valve to be tested.

[0080] 2. Strain gauge torque sensor module.

[0081] 3. Signal conditioning module, data acquisition module, data processing module, display module, temperature compensation module, encryption module, remote control module and data analysis module.

[0082] 4. Host computer.

[0083] 5. Temperature sensor.

[0084] Experimental steps: 1. Follow step 1 to install the strain gauge torque sensor module on the valve shaft, ensuring that it is firmly installed and can accurately measure the torque signal.

[0085] 2. According to step 2, connect each system component and ensure that the connection is correct and stable.

[0086] 3. Open the valve and make it operate under different torque conditions.

[0087] 4. The signal conditioning module is expressed as follows according to the signal conditioning in step 3: Q(t)= + + ; among them is Signal conditioning scale factor, is the signal conditioning integration coefficient, It is the signal conditioning differential coefficient, which amplifies, filters and linearizes the electrical signal output by the torque sensor module.

[0088] 5. The analog-to-digital conversion unit in the data acquisition module samples and quantizes the conditioned signal, converting the analog signal into a digital signal.

[0089] 6. The temperature sensor in the temperature compensation module detects the temperature of the valve and the surrounding environment in real time. The compensation algorithm unit performs temperature compensation on the torque measurement value according to the method in step 5 based on the temperature data collected by the temperature sensor.

[0090] 7. The central processor in the data processing module processes and analyzes the collected data using relevant algorithms, calculates the torque value of the valve, and stores the results in the memory.

[0091] 8. The encryption module encrypts the sensitive data in the measurement system according to the encryption function in step 7.

[0092] 9. Through the remote control unit in the remote control module, receive remote control instructions via the network, open, close, and adjust the torque of the valve to verify the effectiveness of the remote control function.

[0093] 10. The data statistics unit in the data analysis module performs statistical analysis on the measured data and evaluates the distribution and trend of the data.

[0094] 11. The display module displays the torque value and working status information of the valve in real time, and observes whether the displayed results are accurate.

[0095] 12. Upload the measurement data in the data processing module to the host computer through the communication interface for further analysis and processing, compare the analysis results of the host computer with the local data processing results, and verify the accuracy and consistency of the data; Experimental data values: Experimental analysis: 1. Measurement accuracy: By comparing the values ​​of applied torque and measured torque, the measurement error can be calculated. For example, in experiment number 1, the measurement error is (50-49.2) / 50=1.6%. Similarly, the measurement errors of other experiment numbers are calculated, and the results are as follows: In general, the measurement errors are within a small range, indicating that the measurement method has high accuracy.

[0096] 2. Temperature compensation effect: Observe the temperature changes in the experimental data and the values ​​of measured torque and displayed torque. It can be found that although the temperature has changed, after temperature compensation, the displayed torque value can more accurately reflect the actual applied torque value, indicating that the temperature compensation module has played an effective role and reduced the impact of temperature on torque measurement.

[0097] 3. Data encryption verification: Check the encryption effect of the encryption module on sensitive data. Through relevant encryption verification methods, confirm the security of data during transmission and storage, and ensure that sensitive information is effectively protected.

[0098] 4. Remote control function: During the experiment, the remote control module was used to send instructions to remotely operate the valve to observe whether the actual action of the valve was consistent with the instructions. The results showed that the remote control function was accurate and reliable, and could realize remote opening, closing and torque adjustment of the valve.

[0099] 5. Data analysis: The data analysis module performs statistical analysis on the measured data, such as calculating the average value and standard deviation. By analyzing these statistical data, the distribution and stability of the valve torque can be understood.

[0100] Experimental conclusion: Through this experiment, the effectiveness and reliability of the torque measurement method of high torque valves based on strain gauges were verified. The experimental results show that: 1. This measurement method has high accuracy and the measurement error is within an acceptable range.

[0101] 2. The temperature compensation module can effectively reduce the impact of temperature on torque measurement and improve the stability of measurement.

[0102] 3. The encryption module can securely encrypt sensitive data to ensure data security.

[0103] 4. The remote control module can accurately realize the remote operation of the valve, improving the convenience and flexibility of operation.

[0104] 5. The data analysis module can perform effective statistical analysis on the measured data, providing valuable information for the evaluation and maintenance of the valve's operating status.

[0105] In summary, the torque measurement method for high-torque valves based on strain gauges performs well in accuracy, stability, safety and functionality, has high practical value, and can be widely used in the field of torque measurement of high-torque valves.

[0106] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A high torque valve torque measurement system based on strain gauges, characterized in that: It includes a torque sensor module, a signal conditioning module, a data acquisition module, a data processing module and a display module. The torque sensor module is provided with a strain gauge torque sensor module. The strain gauge torque sensor module is installed on the rotating shaft of the valve. The strain gauge torque sensor module is used to measure the torque signal generated when the valve rotates. The torque sensor module is connected to the signal conditioning module. The signal conditioning module is used to amplify, filter and linearize the electrical signal output by the torque sensor module. The signal conditioning module is connected to the data acquisition module. The data acquisition module is used to collect and digitize the conditioned signal and convert the analog signal into a digital signal. The data acquisition module is connected to the data processing module. The data processing module is used to process and analyze the collected data and calculate the torque value of the valve. The data processing module is connected to the display module. The display module is used to display the torque value and working status information of the valve.

2. A high torque valve torque measurement system based on strain gauge according to claim 1, characterized in that: The data acquisition module is provided with an analog-to-digital conversion unit, which samples and quantizes the conditioned signal and converts the analog signal into a digital signal.

3. A high torque valve torque measurement system based on strain gauge according to claim 2, characterized in that: The data processing module includes a central processing unit, a memory and a communication interface, and the central processing unit processes and analyzes the data to calculate the torque value of the valve; The torque value is calculated as follows: ； in is the torque applied to the shaft; Resistance change, Initial resistance when not deformed, is the sensitivity coefficient of the strain gauge, Young's modulus of the material, The diameter of a shaft of circular cross-section, represents the torque correction function, Indicates the output signal correction value of the sensor, is the temperature correction value; The memory is used to store programs and data, including measurement data, calibration data and system parameters; the communication interface is used to communicate with external devices and upload the measurement data to the host computer for further analysis and processing.

4. A high torque valve torque measurement system based on strain gauge according to claim 3, characterized in that: It also includes a temperature compensation module, which is provided with a temperature sensor and a compensation algorithm unit. The temperature sensor is used to detect the temperature of the valve and the surrounding environment to provide temperature parameters for torque measurement. The compensation algorithm unit performs temperature compensation on the torque measurement value according to the temperature data collected by the temperature sensor.

5. A high torque valve torque measurement system based on strain gauge according to claim 4, characterized in that: It also includes an encryption module, which performs encryption processing on sensitive data in the measurement system, including measurement data and system parameters.

6. A high torque valve torque measurement system based on strain gauge according to claim 5, characterized in that: It also includes a remote control module, which is provided with a remote control unit. The remote control unit receives remote control instructions through the network and remotely operates the valve. The remote operation includes opening, closing, and adjusting the torque.

7. A high torque valve torque measurement system based on strain gauge according to claim 6, characterized in that: It also includes a data analysis module, wherein the data analysis module is provided with a data statistics unit, and the data statistics unit performs statistical analysis on the measurement data; The data collection variance gap function of the data statistics unit is expressed as: ； Among them, is the i-th type torque measurement acquisition coefficient, is the data collection variance gap function, represents the data collection dataset, Represents the temperature acquisition data set.

8. A method for measuring torque of a high torque valve based on a strain gauge, characterized in that: The following steps are involved: Step 1. Install the strain gauge torque sensor module: Install the strain gauge torque sensor module on the valve shaft to ensure that it can accurately measure the torque signal generated when the valve rotates; Step 2. Connect system components: connect the torque sensor module to the signal conditioning module, the signal conditioning module to the data acquisition module, the data acquisition module to the data processing module, and the data processing module to the display module; at the same time, connect the temperature compensation module, encryption module, remote control module, and data analysis module to the corresponding components respectively; Step 3. Signal conditioning: The signal conditioning module amplifies, filters and linearizes the electrical signal output by the torque sensor module; Step 4. Data acquisition and digitization: The analog-to-digital conversion unit in the data acquisition module samples and quantizes the conditioned signal and converts the analog signal into a digital signal; Step 5. Temperature measurement and compensation: The temperature sensor in the temperature compensation module detects the temperature of the valve and the surrounding environment, and the compensation algorithm unit performs temperature compensation on the torque measurement value according to the temperature data collected by the temperature sensor; Step 6. Data processing and analysis: The central processor in the data processing module processes and analyzes the collected data and calculates the torque value of the valve using relevant algorithms; the memory is used to store programs and data, including measurement data, calibration data and system parameters; The communication interface can upload the measurement data to the host computer for further analysis and processing; Step 7. Data encryption: The encryption module encrypts sensitive data in the measurement system, including measurement data and system parameters; Step 8. Remote control: The remote control unit in the remote control module receives remote control instructions through the network to remotely operate the valve. The remote operation includes opening, closing, and adjusting the torque. Step 9. Data analysis: The data statistics unit in the data analysis module performs statistical analysis on the measured data; Step 10. Result display: The display module is used to display the torque value and working status information of the valve.

9. The method for measuring torque of a high torque valve based on a strain gauge according to claim 8, characterized in that: Step 5. The signal conditioning module in step 3. signal conditioning is expressed as: Q(t)= + + ; Among them is Signal conditioning scale factor, is the signal conditioning integration coefficient, is the signal conditioning differential coefficient.

10. The method for measuring torque of a high torque valve based on a strain gauge according to claim 9, characterized in that: Step 7. The encryption function for data encryption is expressed as; ； in is plain text data, is the public key, and the encryption function consists of two large prime numbers and composition, is a random number; The decryption function is expressed as: ； is the key, For encrypted data, Represents the decryption key value.

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