A method and system for indicating the position of an electric valve

Abstract

The present invention discloses a valve position indication method and a valve position indication system for an electric valve, including judging the current state of the electric valve to execute a valve opening action or a valve closing action; a method for judging whether the valve is fully opened includes judging whether the valve has completed the valve opening action through a real-time plug-in force signal and a standard plug-in force model; judging whether the valve is fully opened through a time data signal and a standard valve opening time model; a method for judging whether the valve is fully closed includes judging whether the valve has completed the valve closing action through a real-time plug-in force signal and a standard plug-in force model; the present invention judges the action of the electric valve through the matching of the real-time plug-in force and the standard plug-in force model, thereby determining whether the valve is faulty; and judges the valve opening position of the valve through the matching of the time data signal and the standard valve opening time model, so that if the environment and usage conditions change, the problem of poor judgment accuracy can be avoided by correcting the model.

Description

Technical Field

[0001] The present invention relates to the field of valve control, and in particular to a valve position indication method and a valve position indication system for an electric valve. Background Art

[0002] The position indicator is a crucial component of an electric valve. Its function is to display the valve's open / close position, directly determining whether the valve is functioning properly. Traditional valve position feedback devices are susceptible to environmental interference and can also become inaccurate over time. Therefore, in industrial process control, on-site adjustments are required based on usage and the operating environment to meet production requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the traditional valve position feedback device has inaccurate accuracy. The purpose is to provide an electric valve position indication method and a valve position indication system, which solves the problem of poor accuracy of the valve position indicator due to usage time or usage environment.

[0004] The present invention is achieved through the following technical solutions:

[0005] A method for indicating the position of an electric valve, comprising:

[0006] Determine the current state of the electric valve. If the current state is closed, execute the valve opening action; if the current state is open, execute the valve closing action;

[0007] Methods for judging whether the valve is fully opened include:

[0008] The electric gate valve receives the valve opening signal and outputs the real-time insertion and removal force signal;

[0009] The real-time plug-in / plug-out force signal and the standard plug-in / plug-out force model are used to determine whether the valve has completed the valve opening action; if not, a valve fault signal is output; if so, the valve opening time data signal is obtained;

[0010] Determine whether the valve is fully opened through the time data signal and the standard valve opening time model; if not, output a valve fault signal; if so, output a valve fully opened signal;

[0011] The methods for judging whether the valve is fully closed include:

[0012] The electric gate valve receives the valve closing signal and outputs the real-time plugging and unplugging force signal;

[0013] The real-time plug-in / plug-out force signal and the standard plug-in / plug-out force model are used to determine whether the valve has completed the valve closing action; if not, a valve fault signal is output; if so, a valve closed position signal is output.

[0014] Specifically, the method for determining whether the valve has completed the valve opening action based on the insertion and extraction force signal includes:

[0015] Building machine learning models;

[0016] Obtain training sample data for an electric gate valve, the training sample data including historical insertion and extraction force data during valve opening action;

[0017] Input the training sample data into the machine learning model for training to obtain a standard plug-in / plug-out force model;

[0018] Determine whether the real-time plug-in / plug-out force data when opening the valve conforms to the standard plug-in / plug-out force model. If not, output a valve fault signal; if so, output a valve start-up signal.

[0019] Specifically, the method for determining whether the valve has completed the valve closing action by the insertion and extraction force signal includes:

[0020] Building machine learning models;

[0021] Obtain training sample data for the electric gate valve, including historical insertion and extraction force data during the valve closing action;

[0022] Input the training sample data when closing the valve into the machine learning model for training to obtain the standard plug-in / plug-out force model;

[0023] Determine whether the real-time plug-in / plug-out force data when closing the valve conforms to the standard plug-in / plug-out force model. If not, output a valve fault signal; if so, output a valve start-up / shutdown signal.

[0024] Specifically, the method of judging whether the valve is fully opened by the time data signal includes:

[0025] Building machine learning modules;

[0026] Obtain training sample data of the electric gate valve, where the training sample data includes historical time data of the valve opening action;

[0027] Input the training sample data into the machine learning model for training to obtain a standard valve opening time model;

[0028] Determine whether the time data signal conforms to the standard valve opening time model. If not, output a valve fault signal; if so, output a valve open position signal.

[0029] Preferably, after completing one valve opening action or one valve opening action, the corresponding plugging and pulling force data in the valve opening action, the plugging and pulling force data in the valve closing action, and the time data of the valve opening action are obtained;

[0030] The plugging and pulling force data in the valve opening action and the plugging and pulling force data in the valve closing action are used as training sample data to continue training the standard plugging and pulling force model;

[0031] The time data of the valve opening action is used as training sample data to continue training the standard valve opening time model.

[0032] Specifically, the method for acquiring the time data signal includes:

[0033] When the real-time plug-in / plug-out force signal is detected, the valve opening action start time is obtained;

[0034] If the real-time plug-in / plug-out force data when opening the valve does not conform to the standard plug-in / plug-out force model, a valve fault signal is output;

[0035] If the real-time plug-in / plug-out force data during valve opening conforms to the standard plug-in / plug-out force model, the valve opening action end time is obtained, and a time data signal is obtained through the end time and the start time.

[0036] An electric valve position indication system is used to implement the above-mentioned electric valve position indication method, the system comprising:

[0037] Insertion and extraction force detection component, which is used to obtain the insertion and extraction force during the opening or closing action of the electric gate valve;

[0038] The MCU controller has a signal input terminal electrically connected to the signal output terminal of the plugging and pulling force detection component, and is used to execute the valve opening and closing position determination method and the valve closing position determination method.

[0039] Specifically, the plugging and unplugging force detection component includes a force sensor and a charge amplifier electrically connected to the force sensor, and the output end of the charge amplifier is electrically connected to the MCU controller;

[0040] The force sensor is mounted on the valve stem of the electric valve and is used to detect radial deformation of the valve stem.

[0041] Optionally, the method for calculating the plugging and unplugging force by the plugging and unplugging force detection component includes: obtaining the radial deformation of the valve stem through a force sensor, and calculating the axial force of the valve stem, that is, the plugging and unplugging force.

[0042] Among them, the axial force on the valve stem of the corresponding material is obtained through the relationship between the size of the radial deformation, Young's modulus and Poisson's ratio.

[0043] Specifically, a clock counter is provided in the MCU controller, and the switching time of the electric valve is sampled by the clock counter;

[0044] When the MCU controller starts to open the valve, the clock counter starts sampling the start time of the valve opening action;

[0045] The MCU controller determines that the real-time plug-in / plug-out force data when the valve is opened conforms to the standard plug-in / plug-out force model, and then starts sampling the valve opening action end time through the clock counter.

[0046] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0047] The present invention obtains the real-time plugging and unplugging force of the electric gate valve, and judges the action of the electric valve by matching the real-time plugging and unplugging force with a standard plugging and unplugging force model, thereby determining whether the valve is faulty; and further judges the valve opening position by matching the time data signal with a standard valve opening time model, so that if the environment and usage conditions change, the problem of poor judgment accuracy can be avoided by correcting the model. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and the accompanying drawings are included in and constitute a part of this specification and do not constitute a limitation of the embodiments of the present invention.

[0049] Figure 1 It is a structural schematic diagram of an electric valve position indicating system according to the present invention.

[0050] Figure 2 It is a flow chart of a method for indicating the position of an electric valve according to the present invention. DETAILED DESCRIPTION

[0051] To make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the relevant content and are not intended to limit the present invention.

[0052] It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings.

[0053] In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0054] Example 1

[0055] like Figure 1 As shown, this embodiment first provides a hardware system that can be used as a valve position indicator, so an electric valve position indication system in this embodiment can be obtained, which is used to implement an electric valve position indication method as described below, and the system includes an insertion and extraction force detection component and an MCU controller.

[0056] The plugging and unplugging force detection component is used to obtain the plugging and unplugging force during the opening or closing action of the electric gate valve. The plugging and unplugging force detection component in this embodiment includes a force sensor and a charge amplifier electrically connected to the force sensor. The output end of the charge amplifier is electrically connected to the MCU controller. The force sensor is installed on the valve stem of the electric valve and is used to detect the radial deformation of the valve stem.

[0057] The method for calculating the plugging and unplugging force by the plugging and unplugging force detection component includes: obtaining the radial deformation of the valve stem through a force sensor, and calculating the axial force of the valve stem, that is, the plugging and unplugging force.

[0058] Among them, the axial force on the valve stem of the corresponding material is obtained through the relationship between the size of the radial deformation, Young's modulus and Poisson's ratio.

[0059] The signal input end of the MCU controller is electrically connected to the signal output end of the plugging and pulling force detection component, and is used to execute the valve opening and closing position determination method and the valve closing and closing position determination method.

[0060] The MCU controller has a program that can execute the following instruction method and has certain calculation, storage and output functions. The results can be directly output.

[0061] Example 2

[0062] The electric valve position indicator of the present invention does not rely entirely on hardware, but requires a combination of hardware and software to achieve its functions. Therefore, this embodiment provides an electric valve position indication method based on the valve position indication system of the first embodiment, comprising:

[0063] Determine the current state of the electric valve. If the current state is closed, execute the valve opening action; if the current state is open, execute the valve closing action;

[0064] like Figure 2 As shown, the method for judging whether the valve is fully opened includes:

[0065] A1. The electric gate valve receives a valve opening signal and outputs a real-time plugging and unplugging force signal. The plugging and unplugging force signal is measured by the plugging and unplugging force detection component in Example 1 and then output to the MCU controller.

[0066] A2. Determine whether the valve has completed the valve opening action based on the real-time plug-in / plug-out force signal and the standard plug-in / plug-out force model; if not, output a valve fault signal; if so, obtain the valve opening time data signal;

[0067] Specific judgment methods include:

[0068] A21. Build a machine learning model.

[0069] A22. Obtain training sample data for the electric gate valve. The training sample data includes historical insertion and extraction force data during the valve opening action. The training sample data is obtained by corresponding to the previous working data of the electric gate valve.

[0070] A23. Input the training sample data into the machine learning model for training to obtain a standard plugging and unplugging force model.

[0071] A24. Determine whether the real-time insertion / insertion force data during valve opening conforms to the standard insertion / insertion force model. If not, a valve fault signal is output; if so, a valve start / open signal is output. This means determining whether the real-time insertion / insertion force curve conforms to the standard insertion / insertion force model. This can be performed through comparative analysis, which is not detailed here.

[0072] A25. After completing one valve opening action or one valve opening action, obtain the corresponding insertion and extraction force data in the valve opening action.

[0073] A26, and using the plugging and unplugging force data in the valve opening action as the training sample data in step A23 to continue training the standard plugging and unplugging force model.

[0074] Through the cyclic iteration of steps A23 to A26, the standard plug-in / plug-out force model can be corrected when the electric gate valve is worn or the environment changes.

[0075] A3. Determine whether the valve is fully opened based on the time data signal and the standard valve opening time model; if not, output a valve fault signal; if so, output a valve fully opened signal;

[0076] Specific judgment methods include:

[0077] A31. Establish machine learning module;

[0078] A32. Obtain training sample data for the electric gate valve, where the training sample data includes historical time data of the valve opening action;

[0079] A33. Input the training sample data into the machine learning model for training to obtain a standard valve opening time model;

[0080] A34 determines whether the time data signal conforms to the standard valve opening time model. If not, a valve fault signal is output; if so, a valve fully opened signal is output. To determine whether the time data signal conforms to the standard valve opening time model, a comparative analysis can be performed, which will not be detailed here.

[0081] A35. After completing one valve opening action or one valve opening action, obtain the corresponding insertion and extraction force data in the valve opening action.

[0082] A36: Use the valve opening time data as the training sample data in step A33 to continue training the standard valve opening time model.

[0083] Through the cyclic iteration of steps A33 to A36, the standard valve opening time model can be corrected when the electric gate valve is worn or the environment changes.

[0084] like Figure 2 As shown, the method for judging whether the valve is fully closed includes:

[0085] B1. The electric gate valve receives the valve closing signal and outputs the real-time insertion and removal force signal;

[0086] B2. Determine whether the valve has completed the valve closing action through the real-time plug-in / plug-out force signal and the standard plug-in / plug-out force model; if not, output a valve fault signal; if so, output a valve closed position signal.

[0087] Specific judgment methods include:

[0088] B21. Build machine learning models;

[0089] B22. Obtain training sample data for the electric gate valve, where the training sample data includes historical insertion and extraction force data during the valve closing action;

[0090] B23. Input the training sample data when closing the valve into the machine learning model for training to obtain a standard plug-in / plug-out force model;

[0091] B24. Determine whether the real-time plug-in / plug-out force data during valve closing conforms to the standard plug-in / plug-out force model. If not, output a valve fault signal; if so, output a valve start / close signal. Determine whether the real-time plug-in / plug-out force curve conforms to the standard plug-in / plug-out force model through comparative analysis, which will not be detailed here.

[0092] B25. After completing one valve opening action or one valve opening action, obtain the corresponding time data of the valve opening action;

[0093] B26, and use the time data of the valve opening action as the training sample data of B23 to continue training the standard valve opening time model.

[0094] Through the cyclic iteration of steps B23 to B26, the standard plug-in / plug-out force model can be corrected when the electric gate valve is worn or the environment changes.

[0095] In the above steps A and B, A21, A31, and B21 can be merged to construct a machine learning model, A22, A32, and B22 can be merged to uniformly input a set of sample data, and A23, A33, and B23 can be merged to output a deep learning model suitable for valve position indication of electric gate valves.

[0096] In addition, this embodiment provides a method for obtaining the time data signal, including:

[0097] C1. When the real-time plug-in / plug-out force signal is detected, the valve opening start time is obtained;

[0098] C2. If the real-time plug-in / plug-out force data when the valve is opened does not conform to the standard plug-in / plug-out force model, a valve fault signal is output; and the data is stored or discarded.

[0099] C3. If the real-time plug-in / plug-out force data during valve opening conforms to the standard plug-in / plug-out force model, the valve opening action end time is obtained, and a time data signal is obtained through the end time and the start time.

[0100] A clock counter is provided in the MCU controller, and the switching time of the electric valve is sampled by the clock counter;

[0101] When the MCU controller starts to open the valve, the clock counter starts sampling the start time of the valve opening action;

[0102] The MCU controller determines that the real-time plug-in / plug-out force data when the valve is opened conforms to the standard plug-in / plug-out force model, and then starts sampling the valve opening action end time through the clock counter.

[0103] Example 3

[0104] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned method for indicating the valve position of an electric valve are implemented.

[0105] Without loss of generality, computer-readable media may include computer storage media and communication media. Computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instruction data structures, program modules, or other data. Computer storage media includes RAM, ROM, EPROM, EEPROM, flash memory or other solid-state storage technologies, CD-ROM, DVD or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Of course, those skilled in the art will appreciate that computer storage media is not limited to the aforementioned types. The aforementioned system memory and mass storage devices may be collectively referred to as memory.

[0106] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0107] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0108] It should be understood by those skilled in the art that the above embodiments are merely for the purpose of illustrating the present invention clearly, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above invention, and these changes or modifications are still within the scope of the present invention.

Claims

1. A method for indicating the position of an electric valve, characterized in that: include: Determine the current state of the electric valve. If the current state is closed, execute the valve opening action; If the current state is open, the valve closing action is executed; Methods for judging whether the valve is fully opened include: The electric gate valve receives the valve opening signal and outputs the real-time insertion and removal force signal; The real-time plug-in / plug-out force signal and the standard plug-in / plug-out force model are used to determine whether the valve has completed the valve opening action; if not, a valve fault signal is output; if so, the valve opening time data signal is obtained; Determine whether the valve is fully opened through the time data signal and the standard valve opening time model; if not, output a valve fault signal; if so, output a valve fully opened signal; The methods for judging whether the valve is fully closed include: The electric gate valve receives the valve closing signal and outputs the real-time plugging and unplugging force signal; The real-time plug-in / plug-out force signal and the standard plug-in / plug-out force model are used to determine whether the valve has completed the closing action; if not, a valve fault signal is output; if so, a valve closed position signal is output; Among them, after completing a valve opening action or a valve opening action, the corresponding plugging and pulling force data in the valve opening action, the plugging and pulling force data in the valve closing action, and the time data of the valve opening action are obtained; The plugging and pulling force data in the valve opening action and the plugging and pulling force data in the valve closing action are used as training sample data to continue training the standard plugging and pulling force model; The time data of the valve opening action is used as training sample data to continue training the standard valve opening time model.

2. The method for indicating the position of an electric valve according to claim 1, characterized in that: Methods for determining whether the valve has completed the valve opening action based on the plug-in force signal include: Building machine learning models; Obtain training sample data for an electric gate valve, the training sample data including historical insertion and extraction force data during valve opening action; Input the training sample data into the machine learning model for training to obtain a standard plug-in / plug-out force model; Determine whether the real-time plug-in / plug-out force data when opening the valve conforms to the standard plug-in / plug-out force model. If not, output a valve fault signal; if so, output a valve start-up signal.

3. The method for indicating the position of an electric valve according to claim 2, characterized in that: Methods for judging whether the valve has completed the valve closing action by the plug-in force signal include: Building machine learning models; Obtain training sample data for the electric gate valve, including historical insertion and extraction force data during the valve closing action; Input the training sample data when closing the valve into the machine learning model for training to obtain the standard plug-in / plug-out force model; Determine whether the real-time plug-in / plug-out force data when closing the valve conforms to the standard plug-in / plug-out force model. If not, output a valve fault signal; if so, output a valve start-up / shutdown signal.

4. The method for indicating the position of an electric valve according to claim 3, characterized in that: Methods for judging whether the valve is fully opened by using time data signals include: Building machine learning modules; Obtain training sample data of the electric gate valve, where the training sample data includes historical time data of the valve opening action; Input the training sample data into the machine learning model for training to obtain a standard valve opening time model; Determine whether the time data signal conforms to the standard valve opening time model. If not, output a valve fault signal; if so, output a valve open position signal.

5. The method for indicating the position of an electric valve according to claim 4, characterized in that: The method for acquiring the time data signal includes: When the real-time plug-in / plug-out force signal is detected, the valve opening action start time is obtained; If the real-time plug-in / plug-out force data when opening the valve does not conform to the standard plug-in / plug-out force model, a valve fault signal is output; If the real-time plug-in / plug-out force data during valve opening conforms to the standard plug-in / plug-out force model, the valve opening action end time is obtained, and a time data signal is obtained through the end time and the start time.

6. An electric valve position indication system, characterized in that: For implementing a method for indicating the position of an electric valve as claimed in claim 1, the system comprises: Insertion and extraction force detection component, which is used to obtain the insertion and extraction force during the opening or closing action of the electric gate valve; The MCU controller has a signal input terminal electrically connected to the signal output terminal of the plugging and pulling force detection component, and is used to execute the valve opening and closing position determination method and the valve closing position determination method.

7. The electric valve position indicating system according to claim 6, characterized in that: The plugging and unplugging force detection component includes a force sensor and a charge amplifier electrically connected to the force sensor, and the output end of the charge amplifier is electrically connected to the MCU controller; The force sensor is mounted on the valve stem of the electric valve and is used to detect radial deformation of the valve stem.

8. The electric valve position indicating system according to claim 7, characterized in that: The method for calculating the plugging and unplugging force by the plugging and unplugging force detection assembly includes: obtaining the radial deformation of the valve stem through a force sensor, and calculating the axial force of the valve stem, that is, the plugging and unplugging force; Among them, the axial force on the valve stem of the corresponding material is obtained through the relationship between the size of the radial deformation, Young's modulus and Poisson's ratio.

9. The electric valve position indicating system according to claim 6, characterized in that: A clock counter is provided in the MCU controller, and the switching time of the electric valve is sampled by the clock counter; When the MCU controller starts to open the valve, the clock counter starts sampling the start time of the valve opening action; The MCU controller determines that the real-time plug-in / plug-out force data when the valve is opened conforms to the standard plug-in / plug-out force model, and then starts sampling the valve opening action end time through the clock counter.

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