Method and device for correcting and measuring linear speed of circuit breaker

Abstract

The invention provides a correction measurement method and device for the linear speed of a circuit breaker. The method comprises the following steps: monitoring a potential signal of a circuit breaker moving part in real time through a linear sensor, and extracting a first target signal; measuring and monitoring an angle difference between the linear sensor and the motion direction by using an attitude sensor to obtain a second target signal; the mechanical characteristic tester corrects the potential signal by combining the angle signal of the attitude sensor, thereby eliminating the error caused by the installation deviation, and ensuring that the obtained circuit breaker stroke data is more accurate. The circuit breaker is provided with the linear sensor and the attitude sensor, the potential signal of the linear sensor is corrected through the signal of the attitude sensor, and the stroke of the circuit breaker is corrected based on the corrected potential signal, so that the accuracy of linear speed calculation is ensured; the problem that accurate measurement of the linear speed of the circuit breaker is difficult to realize in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breaker correction, and in particular to a correction measurement method for a circuit breaker's linear speed, a correction measurement device for a circuit breaker's linear speed, a computer-readable storage medium, and a circuit breaker monitoring system. Background Art

[0002] The mechanical property test of the circuit breaker mainly includes measuring key parameters such as its action speed, opening and closing time, and contact bounce. In the prior art, commonly used measurement methods include acceleration sensors, linear resistance sensors, rotation sensors, and testing methods based on visual technology. Acceleration sensors and linear resistance sensors are often used to measure the speed and displacement of circuit breakers. By detecting changes in acceleration or displacement, the movement of the circuit breaker can be inferred. Rotation sensors are usually used to measure the rotation angle and speed of circuit breakers, and are suitable for occasions where precise monitoring of mechanical movement is required.

[0003] However, these traditional sensor technologies have certain limitations in practical applications. For example, the measurement results of acceleration sensors and linear resistance sensors are easily affected by factors such as installation position and angle. Installation errors may lead to measurement deviations, especially in dynamic tests, where small deviations will affect test accuracy. Although rotation sensors can provide angle and speed measurements, they also have high installation requirements and are easily affected by environmental factors such as electromagnetic interference and temperature fluctuations, which can affect the stability and reliability of the measurement.

[0004] In addition, although the circuit breaker mechanical characteristic test based on visual technology can provide intuitive measurement results and avoid the errors caused by physical contact, its equipment cost is high, the system structure is complex, and the installation and debugging are also cumbersome, which limits its popularity in field applications. In contrast, the direct measurement method of linear sensors in the existing technology is simple, but its accuracy and stability are still difficult to meet the needs of high-precision measurement.

[0005] Therefore, the existing technology still faces problems such as low accuracy, complex installation and high cost in circuit breaker speed and mechanical characteristics testing. A new method is urgently needed to overcome these limitations, improve measurement accuracy and simplify system design. Summary of the invention

[0006] The main purpose of the present application is to provide a corrected measurement method for the linear speed of a circuit breaker, a corrected measurement device for the linear speed of a circuit breaker, a computer-readable storage medium and a circuit breaker monitoring system, so as to at least solve the problem that it is difficult to accurately measure the linear speed of a circuit breaker in the prior art.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a method for correcting and measuring the linear speed of a circuit breaker is provided. The correction and measurement system of the linear speed of the circuit breaker includes a linear sensor, a posture sensor, a mechanical property tester and a circuit breaker. The linear sensor is installed on the moving part of the circuit breaker, and the posture sensor is installed on the linear sensor. The method includes: controlling the linear sensor to monitor the moving part, and extracting the potential signal of the linear sensor at each moment to obtain a first target signal; controlling the posture sensor to monitor the angle difference between the linear sensor and the moving direction of the circuit breaker to obtain a second target signal; controlling the mechanical property tester to correct the error of the first target signal caused by the deviation between the direction of the linear sensor and the moving direction based on the second target signal to obtain a third target signal, and correcting the circuit breaker stroke of the moving part based on the third target signal to obtain a target circuit breaker stroke; calculating the opening and closing speed of the circuit breaker based on the target circuit breaker stroke to obtain a target speed.

[0008] Optionally, controlling the mechanical property tester to correct the first target signal based on the second target signal to obtain a third target signal includes: substituting the first target signal and the second target signal into a first preset formula to obtain the third target signal:

[0009] V2(T)=V1(T)

[0010] V2(nT)=V2((n-1)T)+(V1(nT)-V2((n-1)T))×sinθ((n-1)T); wherein T is the sampling period of the linear sensor, n is the number of the sampling period, V2(T) is the third target signal, V1(T) is the first target signal, and θ(T) is the second target signal.

[0011] Optionally, the circuit breaker stroke of the moving component is corrected based on the third target signal to obtain a target circuit breaker stroke. The method also includes: traversing the third target signal, intercepting the third target signal that meets a first preset condition to determine it as a fourth target signal, the first preset condition being V3=V2(NT), wherein NT represents the sampling time when the third target signal is stable after opening and closing, and V3 is the fourth target signal; traversing the third target signal, intercepting the third target signal that meets a second preset condition to determine it as a fifth target signal, the second preset condition being V4=V2(T)=V1, wherein V1 is the potential value of the third target signal before opening and closing, and V4 is the fifth target signal; correcting the circuit breaker stroke of the moving component based on the fourth target signal and the fifth target signal to obtain a target circuit breaker stroke.

[0012] Optionally, the circuit breaker stroke of the moving component is corrected based on the fourth target signal and the fifth target signal to obtain a target circuit breaker stroke, comprising: substituting the fourth target signal and the fifth target signal into a second preset formula to calculate the target circuit breaker stroke: Wherein, L(nT) is the target circuit breaker stroke, L is the total circuit breaker stroke before correction, and V2(T)-V1(T) is the deviation between the third target signal and the first target signal.

[0013] Optionally, calculating the opening and closing speed of the circuit breaker based on the target circuit breaker stroke to obtain the target speed includes: substituting the target circuit breaker stroke into a third preset formula to calculate the target speed:

[0014] Wherein, v is the target speed, and n1 and n2 are the n1th and n2th sampling periods.

[0015] Optionally, the linear sensor includes at least one of a linear displacement sensor and an acceleration sensor.

[0016] Optionally, the attitude sensor includes at least one of a gyroscope and a magnetometer.

[0017] According to another aspect of the present application, a correction measurement device for a linear speed of a circuit breaker is provided. The correction measurement system for the linear speed of the circuit breaker includes a linear sensor, a posture sensor, a mechanical property tester and a circuit breaker. The linear sensor is installed on a moving part of the circuit breaker, and the posture sensor is installed on the linear sensor. The device includes: a first control unit, used to control the linear sensor to monitor the moving part, and extract the potential signal of the linear sensor at each moment to obtain a first target signal; a second control unit, used to control the posture sensor to monitor the angle difference between the linear sensor and the moving direction of the circuit breaker to obtain a second target signal; a third control unit, used to control the mechanical property tester to correct the first target signal based on the second target signal to obtain a third target signal, and to correct the circuit breaker stroke of the moving part based on the third target signal to obtain a target circuit breaker stroke; and a calculation unit, used to calculate the opening and closing speed of the circuit breaker based on the target circuit breaker stroke to obtain a target speed.

[0018] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute any one of the methods described.

[0019] According to another aspect of the present application, a circuit breaker monitoring system is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include means for executing any one of the methods described.

[0020] The application of the technical solution of the present application can significantly improve the accuracy and reliability of the mechanical characteristics test of the circuit breaker. By installing a linear sensor and a posture sensor on the circuit breaker, and using the signal of the posture sensor to correct the potential signal of the linear sensor, the stroke of the circuit breaker can be accurately corrected to ensure that the calculation of the linear speed is more accurate. Compared with the prior art, the present application adopts a simple device structure, which significantly reduces the complexity and cost of the system, while avoiding the investment in high-precision camera equipment and complex image processing algorithms. This technical solution not only improves the measurement accuracy, but also makes the system easier to integrate and modify on-site, and improves the flexibility of application. By effectively eliminating the influence of installation errors on the measurement results, the needs of high-precision testing are met, and the problem of difficulty in achieving accurate measurement of the linear speed of the circuit breaker in the prior art is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A structural block diagram of a circuit breaker linear speed correction measurement system provided in an embodiment of the present application is shown;

[0022] Figure 2 A schematic flow chart of a method for correcting the linear speed of a circuit breaker provided in accordance with an embodiment of the present application is shown;

[0023] Figure 3 A schematic diagram of angle deviation of a circuit breaker linear motion provided according to an embodiment of the present application is shown;

[0024] Figure 4 A structural block diagram of a circuit breaker linear speed correction measurement device provided according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] As introduced in the background technology, the existing technology still faces problems such as low accuracy, complex installation and high cost in the circuit breaker speed and mechanical characteristics testing. In order to solve the problem that it is difficult to accurately measure the linear speed of the circuit breaker in the existing technology, the embodiments of the present application provide a corrected measurement method for the linear speed of a circuit breaker, a corrected measurement device for the linear speed of a circuit breaker, a computer-readable storage medium and a circuit breaker monitoring system.

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] In this embodiment, a method for correcting the linear speed of a circuit breaker operating in a corrected measurement system for the linear speed of a circuit breaker is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0031] Figure 1 FIG. 1 is a flow chart of a correction measurement system for the linear speed of a circuit breaker according to an embodiment of the present application. Figure 1As shown, the linear speed correction measurement system of the circuit breaker includes a linear sensor, a posture sensor, a mechanical property tester and a circuit breaker. The linear sensor is installed on the moving part of the circuit breaker, and the potential signal before correction at each moment is used to measure the linear displacement of the circuit breaker in real time. The posture sensor is installed on the linear sensor, which is responsible for detecting the relative posture change of the linear sensor, and providing correction to the potential signal of the linear sensor by obtaining the change in its angle or displacement. The mechanical property tester is used to receive and process the signals of the linear sensor and the posture sensor, so as to correct the stroke of the circuit breaker in real time, and calculate the linear speed of the circuit breaker based on the corrected signal to ensure the accuracy and reliability of the test results. The system effectively improves the accuracy of the linear speed measurement of the circuit breaker by correcting the linear sensor signal, and solves the problem of large measurement error and difficulty in accurate evaluation in the prior art.

[0032] Figure 2 is a flow chart of a method for correcting the linear speed measurement of a circuit breaker according to an embodiment of the present application, Figure 3 Schematic diagram of the angle deviation of the linear motion of the circuit breaker according to an embodiment of the present application. Figure 2 and Figure 3 As shown, the method comprises the following steps:

[0033] Step S201, controlling the linear sensor to monitor the moving component, and extracting the potential signal of the linear sensor at each moment to obtain a first target signal;

[0034] Specifically, the linear resistance sensor measures and records the potential signal in each sampling cycle, and extracts the potential signal V1(nT) of the linear resistance sensor at each sampling moment, where n represents the nth sampling cycle and T represents the sampling cycle. The potential change of the moving parts of the circuit breaker in real time can be obtained as the key data for evaluating the stroke and speed of the circuit breaker. This provides basic data for subsequent signal correction and ensures the accuracy of the measurement.

[0035] Step S202, controlling the attitude sensor to monitor the angle difference between the linear sensor and the movement direction of the circuit breaker to obtain a second target signal;

[0036] Specifically, the attitude sensor monitors and records the angle difference between the linear sensor and the direction of motion at each sampling moment, and monitors the angle difference θ(nT) between the attitude sensor and the direction of motion at each sampling moment. n represents the nth sampling period, and T represents the sampling period. The core purpose of this step is to accurately measure the angle deviation of the sensor, ensure that the acquired linear displacement signal is not affected by the angle error, and provide the necessary angle correction data for subsequent signal correction.

[0037] Step S203, controlling the mechanical property tester to correct the error of the first target signal caused by the deviation between the direction of the linear sensor and the direction of movement based on the second target signal to obtain a third target signal, and correcting the circuit breaker stroke of the moving component based on the third target signal to obtain a target circuit breaker stroke;

[0038] Specifically, the mechanical property tester will correct the potential signal obtained by the linear sensor according to the angle signal provided by the attitude sensor to eliminate the measurement error caused by the deviation between the sensor direction and the movement direction. This can ensure the calculation accuracy of the circuit breaker stroke and provide more accurate basic data for subsequent speed calculation.

[0039] Step S204, calculating the opening and closing speed of the circuit breaker based on the target circuit breaker stroke to obtain a target speed.

[0040] Specifically, the corrected circuit breaker travel data can more accurately calculate the circuit breaker's opening and closing speed, providing accurate motion parameters for circuit breaker performance evaluation and optimization. This calculation process ensures the accuracy of the circuit breaker's speed measurement and evaluation results under different working conditions.

[0041] Through this embodiment, the accuracy and reliability of the circuit breaker linear speed measurement can be significantly improved. Specifically, first, the potential signal of the circuit breaker moving part is monitored in real time by a linear sensor, and the first target signal is extracted to provide basic data for subsequent accurate calculation. Then, the angle difference between the linear sensor and the direction of movement is measured and monitored by a posture sensor to obtain a second target signal to correct the error caused by the sensor direction deviation. The mechanical property tester corrects the potential signal by combining the angle signal of the posture sensor, thereby eliminating the error caused by the installation deviation and ensuring that the obtained circuit breaker stroke data is more accurate. The present application installs a linear sensor and a posture sensor on the circuit breaker, corrects the potential signal of the linear sensor by the signal of the posture sensor, and corrects the circuit breaker stroke based on the corrected potential signal to ensure the accuracy of the linear speed calculation. Compared with the prior art itself, the present application realizes the accurate measurement of the circuit breaker linear speed through a simple device, and reduces the cost compared with the mechanical characteristic parameter test of the circuit breaker based on visual technology in the prior art, and simplifies the structure for easy modification. Compared with the prior art, the present application improves the measurement accuracy by directly measuring by a linear sensor, and the method solves the problem that it is difficult to achieve accurate measurement of the circuit breaker linear speed in the prior art.

[0042] As a possible implementation manner, controlling the mechanical property tester to correct the first target signal based on the second target signal to obtain a third target signal includes:

[0043] Substituting the first target signal and the second target signal into the first preset formula, the third target signal is obtained:

[0044] V2(T)=V1(T)

[0045] V2(nT)=V2((n-1)T)+(V1(nT)-V2((n-1)T))×sinθ((n-1)T);

[0046] Wherein, T is the sampling period of the linear sensor, n is the number of the sampling period, V2(T) is the third target signal, V1(T) is the first target signal, and θ(T) is the second target signal.

[0047] Specifically, the potential signal V1 (nT) sampled by the linear resistance sensor is corrected to obtain a corrected potential signal V2 (nT). Through the above formula, the sampled potential signal of the linear resistance sensor can be corrected to obtain a corrected potential signal, thereby eliminating the error caused by the angular deviation between the direction of the linear sensor and the direction of movement.

[0048] As a possible implementation manner, the circuit breaker stroke of the moving component is corrected based on the third target signal to obtain a target circuit breaker stroke, and the method further includes:

[0049] Step S301, traverse the third target signal, intercept the third target signal that meets the first preset condition and determine it as the fourth target signal, the first preset condition is V3 = V2 (NT), where NT represents the sampling time when the third target signal is stable after opening and closing, and V3 is the fourth target signal;

[0050] Specifically, the first preset condition is that after the circuit breaker is opened and closed, when the potential signal is stable, the third target signal should be stable and meet the conditions, that is, after the circuit breaker is opened and closed, the potential value of the potential signal V2(nT) is stable, and its value is V2(NT)=V2. By intercepting the stable signal part, inaccurate data caused by signal fluctuations or short-term interference can be eliminated, ensuring that the corrected travel signal is more stable and reliable. This process helps to accurately locate the stable state of the circuit breaker and provides a more accurate reference signal for subsequent travel correction.

[0051] Step S302, traversing the third target signal, intercepting the third target signal that meets the second preset condition and determining it as the fifth target signal, the second preset condition is V4 = V2 (T) = V1, wherein V1 is the potential value of the third target signal before opening and closing, and V4 is the fifth target signal;

[0052] Specifically, the second preset condition is that before the circuit breaker is opened and closed, at the moment when the potential signal is stable, the third target signal should be stable and meet the conditions, that is, before the potential signal is opened and closed, the potential value V2(nT) is stable, and its value is V2(T)=V1. By intercepting the stable signal before the circuit breaker is opened and closed, the accuracy of the circuit breaker state during the measurement process is further ensured, and the disturbance influence before opening and closing is avoided, so that the signal correction is more accurate, and the influence of the instability or error of the potential signal on the stroke correction is avoided.

[0053] Step S303: correcting the circuit breaker stroke of the moving component based on the fourth target signal and the fifth target signal to obtain a target circuit breaker stroke.

[0054] Specifically, the stroke is corrected in such a way that the deviation in the signal is eliminated through linear mapping or other correction algorithms, thereby obtaining the precise stroke of the circuit breaker.

[0055] It can be seen that by combining the stable signals before and after opening and closing, and correcting the circuit breaker stroke, it is possible to eliminate the stroke measurement error caused by installation errors, environmental changes, or short-term interference, thereby achieving more accurate circuit breaker stroke data. This process effectively improves the accuracy of circuit breaker performance testing and provides reliable data support for subsequent speed calculations.

[0056] As a possible implementation manner, the circuit breaker stroke of the moving component is corrected based on the fourth target signal and the fifth target signal to obtain the target circuit breaker stroke, including:

[0057] Substitute the fourth target signal and the fifth target signal into the second preset formula to calculate the target circuit breaker stroke: Wherein, L(nT) is the target circuit breaker stroke, L is the total circuit breaker stroke before correction, and V2(T)-V1(T) is the deviation between the third target signal and the first target signal.

[0058] Specifically, according to the total circuit breaker stroke L before correction, the corrected potential signal V2 (nT) is linearly matched with the target circuit breaker stroke L (nT) to obtain the target circuit breaker stroke L (nT).

[0059] It can be seen that by correcting the deviation of the fourth target signal and the fifth target signal, the error caused by the sensor installation angle or external factors can be eliminated, ensuring more accurate circuit breaker travel data. The corrected target circuit breaker travel reflects the actual movement of the circuit breaker, thereby providing more accurate basic data for subsequent speed calculations. The core advantage of this method is that it can accurately correct the circuit breaker travel through a simple linear mapping relationship, improve the measurement accuracy and reliability, and has lower errors and higher practicality than traditional methods.

[0060] As a possible implementation method, the opening and closing speed of the circuit breaker is calculated based on the target circuit breaker stroke to obtain the target speed, including:

[0061] Substitute the target breaker shape into the third preset formula to calculate the target speed: Where v is the target speed, n1 and n2 are the n1th and n2th sampling periods.

[0062] Specifically, the speed is calculated by the difference between the sampling moments, which can accurately reflect the actual movement of the circuit breaker during the opening and closing process. Compared with the traditional method, this method can more accurately capture the speed change of the circuit breaker, avoiding the problem of inaccurate speed calculation caused by sensor error or external interference factors. At the same time, this method has the advantages of simple structure and easy implementation. It can obtain high-precision opening and closing speed data without adding complex hardware, thereby improving test efficiency and accuracy.

[0063] As a possible implementation manner, the linear sensor includes at least one of a linear displacement sensor and an acceleration sensor.

[0064] Specifically, the linear displacement sensor is used to accurately measure the displacement change of the moving parts of the circuit breaker, and is suitable for applications that require high-precision position measurement. By measuring the displacement of the moving parts of the circuit breaker, the linear displacement sensor can provide a potential signal that reflects the relative position change of the moving parts. The acceleration sensor is used to measure the acceleration change of the moving parts and can provide a potential signal related to the speed change. In some cases, the selection of an acceleration sensor can obtain indirect information related to the displacement, which is convenient for obtaining the changes in speed and displacement through integration.

[0065] In this embodiment, the selection of the linear sensor depends on the accuracy requirements of the application scenario and the complexity of the system design. The two sensors can be used independently or in combination as needed.

[0066] As a possible implementation manner, the attitude sensor includes at least one of a gyroscope and a magnetometer.

[0067] Specifically, the gyroscope is used to measure the angular velocity of the moving parts and can provide information about the change in the direction of movement. By integrating the angular velocity signal of the gyroscope, the angular change of the moving parts of the circuit breaker can be obtained, and the angular difference with the direction of movement can be calculated. The magnetometer is used to measure the direction of the geomagnetic field to help determine the direction of the attitude sensor. Especially when the external environment changes greatly, the magnetometer can provide a reference value to determine the direction of the moving parts.

[0068] In some embodiments, the gyroscope and magnetometer can be used in combination to provide more accurate attitude information. Depending on system requirements, the attitude sensor can be used alone or in conjunction with other sensors to provide more comprehensive and accurate angle correction data.

[0069] The embodiment of the present application also provides a correction measurement device for the linear speed of a circuit breaker. It should be noted that the correction measurement device for the linear speed of a circuit breaker in the embodiment of the present application can be used to execute the correction measurement method for the linear speed of a circuit breaker provided in the embodiment of the present application. The device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0070] The following is an introduction to the correction measurement device for the linear speed of a circuit breaker provided in an embodiment of the present application.

[0071] The correction measurement system of the linear speed of the circuit breaker includes a linear sensor, a posture sensor, a mechanical property tester and a circuit breaker. The linear sensor is installed on the moving part of the circuit breaker, and the posture sensor is installed on the linear sensor. Figure 4 1 is a structural block diagram of a device for correcting the linear velocity of a circuit breaker according to an embodiment of the present application. Figure 4 As shown, the device includes: a first control unit 10 , a second control unit 20 , a third control unit 30 and a calculation unit 40 .

[0072] A first control unit 10 is used to control the linear sensor to monitor the moving part and extract the potential signal of the linear sensor at each moment to obtain a first target signal;

[0073] Specifically, the linear resistance sensor measures and records the potential signal in each sampling cycle, and extracts the potential signal V1(nT) of the linear resistance sensor at each sampling moment, where n represents the nth sampling cycle and T represents the sampling cycle. The potential change of the moving parts of the circuit breaker in real time can be obtained as the key data for evaluating the stroke and speed of the circuit breaker. This provides basic data for subsequent signal correction and ensures the accuracy of the measurement.

[0074] A second control unit 20 is used to control the attitude sensor to monitor the angle difference between the linear sensor and the movement direction of the circuit breaker to obtain a second target signal;

[0075] Specifically, the attitude sensor monitors and records the angle difference between the linear sensor and the direction of motion at each sampling moment, and monitors the angle difference θ(nT) between the attitude sensor and the direction of motion at each sampling moment. n represents the nth sampling period, and T represents the sampling period. The core purpose of this step is to accurately measure the angle deviation of the sensor, ensure that the acquired linear displacement signal is not affected by the angle error, and provide the necessary angle correction data for subsequent signal correction.

[0076] A third control unit 30 is used to control the mechanical property tester to correct the first target signal based on the second target signal to obtain a third target signal, and to correct the circuit breaker stroke of the moving part based on the third target signal to obtain a target circuit breaker stroke;

[0077] Specifically, the mechanical property tester will correct the potential signal obtained by the linear sensor according to the angle signal provided by the attitude sensor to eliminate the measurement error caused by the deviation between the sensor direction and the movement direction. This can ensure the calculation accuracy of the circuit breaker stroke and provide more accurate basic data for subsequent speed calculation.

[0078] The calculation unit 40 is used to calculate the opening and closing speed of the circuit breaker based on the target circuit breaker stroke to obtain the target speed.

[0079] Specifically, the corrected circuit breaker travel data can more accurately calculate the circuit breaker's opening and closing speed, providing accurate motion parameters for circuit breaker performance evaluation and optimization. This calculation process ensures the accuracy of the circuit breaker's speed measurement and evaluation results under different working conditions.

[0080] Through this embodiment, a correction measurement device for the linear speed of a circuit breaker is provided, and the device includes: a first control unit, a second control unit, a third control unit and a calculation unit. The first control unit is used to control the linear sensor to monitor the moving part, and extract the potential signal of the linear sensor at each moment to obtain a first target signal; the second control unit is used to control the posture sensor to monitor the angle difference between the linear sensor and the moving direction of the circuit breaker to obtain a second target signal; the third control unit is used to control the mechanical property tester to correct the first target signal based on the second target signal to obtain a third target signal, and to correct the circuit breaker stroke of the moving part based on the third target signal to obtain a target circuit breaker stroke; the calculation unit is used to calculate the opening and closing speed of the circuit breaker based on the target circuit breaker stroke to obtain a target speed. The device installs a linear sensor and a posture sensor on the circuit breaker, corrects the potential signal of the linear sensor through the signal of the posture sensor, and corrects the circuit breaker stroke based on the corrected potential signal to ensure the accuracy of the linear speed calculation. Compared with the prior art itself, the application realizes the accurate measurement of the linear speed of the circuit breaker through a simple device, and reduces the cost compared with the mechanical characteristic parameter test of the circuit breaker based on visual technology in the prior art, and simplifies the structure for easy modification. Compared with the direct measurement through the linear sensor in the prior art, this application improves the measurement accuracy, and the method solves the problem that it is difficult to realize the accurate measurement of the linear speed of the circuit breaker in the prior art.

[0081] As a possible implementation manner, the third control unit includes: a first formula module.

[0082] The first formula module is used to substitute the first target signal and the second target signal into the first preset formula to obtain a third target signal:

[0083] V2(T)=V1(T)

[0084] V2(nT)=V2((n-1)T)+(V1(nT)-V2((n-1)T))×sinθ((n-1)T); wherein T is the sampling period of the linear sensor, n is the number of the sampling period, V2(T) is the third target signal, V1(T) is the first target signal, and θ(T) is the second target signal.

[0085] Specifically, the potential signal V1 (nT) sampled by the linear resistance sensor is corrected to obtain a corrected potential signal V2 (nT). Through the above formula, the sampled potential signal of the linear resistance sensor can be corrected to obtain a corrected potential signal, thereby eliminating the error caused by the angular deviation between the direction of the linear sensor and the direction of movement.

[0086] As a possible implementation manner, the third control unit further includes: a first intercepting module, a second intercepting module and a correcting module.

[0087] A first interception module is used to traverse the third target signal, intercept the third target signal that meets the first preset condition and determine it as the fourth target signal, the first preset condition is V3 = V2 (NT), wherein NT represents the sampling time when the third target signal is stable after opening and closing, and V3 is the fourth target signal;

[0088] Specifically, the first preset condition is that after the circuit breaker is opened and closed, when the potential signal is stable, the third target signal should be stable and meet the conditions, that is, after the circuit breaker is opened and closed, the potential value of the potential signal V2(nT) is stable, and its value is V2(NT)=V2. By intercepting the stable signal part, inaccurate data caused by signal fluctuations or short-term interference can be eliminated, ensuring that the corrected travel signal is more stable and reliable. This process helps to accurately locate the stable state of the circuit breaker and provides a more accurate reference signal for subsequent travel correction.

[0089] A second interception module is used to traverse the third target signal, intercept the third target signal that meets the second preset condition and determine it as the fifth target signal, the second preset condition is V4=V2(T)=V1, wherein V1 is the potential value of the third target signal before opening and closing, and V4 is the fifth target signal;

[0090] Specifically, the second preset condition is that before the circuit breaker is opened and closed, at the moment when the potential signal is stable, the third target signal should be stable and meet the conditions, that is, before the potential signal is opened and closed, the potential value V2(nT) is stable, and its value is V2(T)=V1. By intercepting the stable signal before the circuit breaker is opened and closed, the accuracy of the circuit breaker state during the measurement process is further ensured, and the disturbance influence before opening and closing is avoided, so that the signal correction is more accurate, and the influence of the instability or error of the potential signal on the stroke correction is avoided.

[0091] The correction module is used to correct the circuit breaker stroke of the moving component based on the fourth target signal and the fifth target signal to obtain a target circuit breaker stroke.

[0092] Specifically, the stroke is corrected in such a way that the deviation in the signal is eliminated through linear mapping or other correction algorithms, thereby obtaining the precise stroke of the circuit breaker.

[0093] It can be seen that by combining the stable signals before and after opening and closing, and correcting the circuit breaker stroke, it is possible to eliminate the stroke measurement error caused by installation errors, environmental changes, or short-term interference, thereby achieving more accurate circuit breaker stroke data. This process effectively improves the accuracy of circuit breaker performance testing and provides reliable data support for subsequent speed calculations.

[0094] As a possible implementation manner, the correction module includes: a second formula submodule.

[0095] The second formula submodule is used to substitute the fourth target signal and the fifth target signal into the second preset formula to calculate the target circuit breaker stroke: Wherein, L(nT) is the target circuit breaker stroke, L is the total circuit breaker stroke before correction, and V2(T)-V1(T) is the deviation between the third target signal and the first target signal.

[0096] Specifically, according to the total circuit breaker stroke L before correction, the corrected potential signal V2 (nT) is linearly matched with the target circuit breaker stroke L (nT) to obtain the target circuit breaker stroke L (nT).

[0097] It can be seen that by correcting the deviation of the fourth target signal and the fifth target signal, the error caused by the sensor installation angle or external factors can be eliminated, ensuring more accurate circuit breaker travel data. The corrected target circuit breaker travel reflects the actual movement of the circuit breaker, thereby providing more accurate basic data for subsequent speed calculations. The core advantage of this method is that it can accurately correct the circuit breaker travel through a simple linear mapping relationship, improve the measurement accuracy and reliability, and has lower errors and higher practicality than traditional methods.

[0098] As a possible implementation manner, the calculation unit includes: a third formula module.

[0099] The third formula module is used to substitute the target circuit breaker into the third preset formula to calculate the target speed: Where v is the target speed, n1 and n2 are the n1th and n2th sampling periods.

[0100] Specifically, the speed is calculated by the difference between the sampling moments, which can accurately reflect the actual movement of the circuit breaker during the opening and closing process. Compared with the traditional method, this method can more accurately capture the speed change of the circuit breaker, avoiding the problem of inaccurate speed calculation caused by sensor error or external interference factors. At the same time, this method has the advantages of simple structure and easy implementation. It can obtain high-precision opening and closing speed data without adding complex hardware, thereby improving test efficiency and accuracy.

[0101] The above-mentioned circuit breaker linear speed correction measurement device includes a processor and a memory, and the above-mentioned first control unit, second control unit, third control unit and calculation unit are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize corresponding functions. The above-mentioned modules are all located in the same processor; or, the above-mentioned modules are located in different processors in any combination.

[0102] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the problem of the difficulty in accurately measuring the linear speed of the circuit breaker in the prior art can be solved by adjusting the kernel parameters.

[0103] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0104] An embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the corrected measurement method for the linear speed of the circuit breaker.

[0105] An embodiment of the present invention provides a circuit breaker monitoring system, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include a method for executing the corrected measurement of the linear speed of the above-mentioned circuit breaker.

[0106] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0107] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0108] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0109] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0110] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0111] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0112] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0113] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0114] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0115] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0116] 1) The corrected measurement method of the linear speed of the circuit breaker of the present application can significantly improve the accuracy and reliability of the linear speed measurement of the circuit breaker. Specifically, first, the potential signal of the moving part of the circuit breaker is monitored in real time by a linear sensor, and the first target signal is extracted to provide basic data for subsequent precise calculations. Then, the attitude sensor is used to measure and monitor the angle difference between the linear sensor and the direction of movement, and the second target signal is obtained to correct the error caused by the direction deviation of the sensor. The mechanical properties tester corrects the potential signal by combining the angle signal of the attitude sensor, thereby eliminating the error caused by the installation deviation and ensuring that the acquired circuit breaker travel data is more accurate. The present application installs a linear sensor and a posture sensor on the circuit breaker, corrects the potential signal of the linear sensor through the signal of the posture sensor, and corrects the circuit breaker stroke based on the corrected potential signal to ensure the accuracy of the linear speed calculation. Compared with the prior art itself, the present application realizes the accurate measurement of the linear speed of the circuit breaker through a simple device, and reduces the cost compared with the mechanical characteristic parameter test of the circuit breaker based on visual technology in the prior art, and simplifies the structure for easy modification. Compared with the direct measurement through the linear sensor in the prior art, the present application improves the measurement accuracy, and the method solves the problem that it is difficult to realize the accurate measurement of the linear speed of the circuit breaker in the prior art.

[0117] 2) The device for correcting and measuring the linear speed of the circuit breaker of the present application comprises: a first control unit, a second control unit, a third control unit and a calculation unit. The first control unit is used to control the linear sensor to monitor the moving parts and extract the potential signal of the linear sensor at each moment to obtain the first target signal; the second control unit is used to control the posture sensor to monitor the angle difference between the linear sensor and the moving direction of the circuit breaker to obtain the second target signal; the third control unit is used to control the mechanical property tester to correct the first target signal based on the second target signal to obtain the third target signal, and to correct the circuit breaker stroke of the moving parts based on the third target signal to obtain the target circuit breaker stroke; the calculation unit is used to calculate the opening and closing speed of the circuit breaker based on the target circuit breaker stroke to obtain the target speed. The device installs a linear sensor and a posture sensor on the circuit breaker, corrects the potential signal of the linear sensor through the signal of the posture sensor, and corrects the circuit breaker stroke based on the corrected potential signal to ensure the accuracy of the linear speed calculation. Compared with the prior art itself, the application realizes the accurate measurement of the linear speed of the circuit breaker through a simple device, and reduces the cost compared with the mechanical characteristic parameter test of the circuit breaker based on visual technology in the prior art, and simplifies the structure for easy modification. Compared with the direct measurement through the linear sensor in the prior art, this application improves the measurement accuracy, and the method solves the problem that it is difficult to realize the accurate measurement of the linear speed of the circuit breaker in the prior art.

[0118] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for correcting the linear velocity of a circuit breaker, characterized in that: The correction measurement system of the linear speed of a circuit breaker comprises a linear sensor, a posture sensor, a mechanical property tester and a circuit breaker, wherein the linear sensor is mounted on a moving part of the circuit breaker, the posture sensor is mounted on the linear sensor, and the method comprises: Controlling the linear sensor to monitor the moving component, and extracting the potential signal of the linear sensor at each moment to obtain a first target signal; controlling the posture sensor to monitor the angle difference between the linear sensor and the movement direction of the circuit breaker to obtain a second target signal; Controlling the mechanical property tester to correct the error of the first target signal caused by the deviation between the direction of the linear sensor and the movement direction based on the second target signal to obtain a third target signal, and correcting the circuit breaker stroke of the moving component based on the third target signal to obtain a target circuit breaker stroke; The opening and closing speed of the circuit breaker is calculated based on the target circuit breaker stroke to obtain a target speed.

2. The method according to claim 1, characterized in that Controlling the mechanical property tester to correct the first target signal based on the second target signal to obtain a third target signal, comprising: Substituting the first target signal and the second target signal into a first preset formula, the third target signal is obtained: V2(T)=V1(T) V2(nT)=V2((n-1)T)+(V1(nT)-V2((n-1)T))×sinθ((n-1)T); Wherein, T is the sampling period of the linear sensor, n is the number of the sampling period, V2(T) is the third target signal, V1(T) is the first target signal, and θ(T) is the second target signal.

3. The method according to claim 2, characterized in that Based on the third target signal, the circuit breaker stroke of the moving component is corrected to obtain a target circuit breaker stroke, and the method further includes: Traversing the third target signal, intercepting the third target signal that meets the first preset condition and determining it as the fourth target signal, the first preset condition is V3=V2(NT), wherein NT represents the sampling time when the third target signal is stable after opening and closing, and V3 is the fourth target signal; Traversing the third target signal, intercepting the third target signal that meets the second preset condition and determining it as the fifth target signal, the second preset condition is V4=V2(T)=V1, wherein V1 is the potential value of the third target signal before opening and closing, and V4 is the fifth target signal; The circuit breaker stroke of the moving component is corrected based on the fourth target signal and the fifth target signal to obtain a target circuit breaker stroke.

4. The method according to claim 3, characterized in that The circuit breaker stroke of the moving component is corrected based on the fourth target signal and the fifth target signal to obtain a target circuit breaker stroke, including: Substitute the fourth target signal and the fifth target signal into the second preset formula to calculate the target circuit breaker stroke: Wherein, L(nT) is the target circuit breaker stroke, L is the total circuit breaker stroke before correction, V2(T)-V1(T) is the deviation between the third target signal and the first target signal.

5. The method according to claim 4, characterized in that Calculating the opening and closing speed of the circuit breaker based on the target circuit breaker stroke to obtain the target speed includes: Substituting the target circuit breaker shape into the third preset formula, the target speed is calculated: Wherein, v is the target speed, and n1 and n2 are the n1th and n2th sampling periods.

6. The method according to claim 1, characterized in that The linear sensor includes at least one of a linear displacement sensor and an acceleration sensor.

7. The method according to claim 1, characterized in that The attitude sensor includes at least one of a gyroscope and a magnetometer.

8. A correction measuring device for the linear velocity of a circuit breaker, characterized in that: The correction measurement system of the linear speed of the circuit breaker includes a linear sensor, a posture sensor, a mechanical property tester and a circuit breaker, wherein the linear sensor is installed on the moving part of the circuit breaker, the posture sensor is installed on the linear sensor, and the device includes: a first control unit, used for controlling the linear sensor to monitor the moving component, and extracting a potential signal of the linear sensor at each moment to obtain a first target signal; a second control unit, configured to control the posture sensor to monitor the angle difference between the linear sensor and the movement direction of the circuit breaker to obtain a second target signal; a third control unit, configured to control the mechanical property tester to correct the first target signal based on the second target signal to obtain a third target signal, and to correct the circuit breaker stroke of the moving component based on the third target signal to obtain a target circuit breaker stroke; A calculation unit is used to calculate the opening and closing speed of the circuit breaker based on the target circuit breaker stroke to obtain a target speed.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method according to any one of claims 1 to 5.

10. A circuit breaker monitoring system, characterized in that: include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of claims 1 to 5.

Images