Method and device for measuring the rectilinear speed of a circuit breaker

Abstract

The application provides a rectilinear velocity correction measurement method and device of a circuit breaker. The method monitors the potential signal of the moving part of the circuit breaker in real time through a linear sensor and extracts a first target signal; an attitude sensor is used to measure and monitor the angle difference between the linear sensor and the movement direction to obtain a second target signal; a 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 application installs a linear sensor and an attitude sensor on the circuit breaker, corrects the potential signal of the linear sensor through the signal of the attitude sensor, and corrects the circuit breaker stroke based on the corrected potential signal, so as to ensure the accuracy of the rectilinear velocity calculation and solve the problem that it is difficult to realize the accurate measurement of the rectilinear velocity of the circuit breaker in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breaker correction, in particular to a linear velocity correction measurement method of a circuit breaker, a linear velocity correction measurement device of a circuit breaker, a computer readable storage medium and a circuit breaker monitoring system. BACKGROUND

[0002] The mechanical property test of a circuit breaker mainly includes measuring key parameters such as its action speed, opening and closing time, and contact bounce. In the prior art, common measurement methods include acceleration sensors, linear resistance sensors, rotary sensors, and test methods based on visual technology. Acceleration sensors and linear resistance sensors are commonly used to measure the speed and displacement of a circuit breaker, and the motion of the circuit breaker is calculated by detecting the change of acceleration or displacement. Rotary sensors are usually used to measure the rotation angle and speed of a circuit breaker, and are suitable for occasions where mechanical movement needs to be accurately monitored.

[0003] However, these traditional sensor technologies have certain limitations in practical application. For example, the measurement results of acceleration sensors and linear resistance sensors are easily affected by factors such as installation position and angle, and installation errors can cause measurement deviation, especially in dynamic testing, small deviations will affect the testing accuracy. Although rotary sensors can provide angle and speed measurement, they also have high installation requirements and are easily disturbed by environmental factors such as electromagnetic interference and temperature fluctuations, thereby affecting the stability and reliability of the measurement.

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

[0005] Therefore, the existing technology still has problems such as low precision, complex installation, and high cost in the speed and mechanical property test of a circuit breaker, and a new method is needed to overcome these limitations, improve measurement accuracy, and simplify system design. SUMMARY

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

[0007] In order to achieve the above object, according to one aspect of the present application, a method for correcting linear velocity of a circuit breaker is provided, the linear velocity correction system of the circuit breaker comprises a linear sensor, an attitude sensor, a mechanical characteristic tester and a circuit breaker, the linear sensor is installed on a moving part of the circuit breaker, the attitude sensor is installed on the linear sensor, the method comprises: controlling the linear sensor to monitor the moving part and extracting the potential signal of the linear sensor at each time to obtain a first target signal; controlling the attitude 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 characteristic tester to correct the error of the first target signal caused by the deviation of 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; and calculating the opening and closing speed of the circuit breaker based on the target circuit breaker stroke to obtain a target speed.

[0008] Optionally, the method further comprises: controlling the mechanical characteristic tester to correct the first target signal based on the second target signal to obtain a third target signal, which comprises: 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 sampling periods, 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 method further comprises: traversing the third target signal, intercepting the third target signal satisfying a first preset condition to determine 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 satisfying a second preset condition to determine 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; and correcting the circuit breaker stroke of the moving part based on the fourth target signal and the fifth target signal to obtain a target circuit breaker stroke.

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

[0013] Optionally, the opening and closing speed of the breaker is calculated based on the target breaker stroke to obtain a target speed, including: substituting the target 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 nth1 and nth2 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, there is provided a device for correcting the linear speed of a breaker, the device including a linear sensor, an attitude sensor, a mechanical characteristic tester, and a breaker, the linear sensor being installed on a moving part of the breaker, the attitude sensor being installed on the linear sensor, the device including: a first control unit configured to control the linear sensor to monitor the moving part and extract a potential signal of the linear sensor at each time to obtain a first target signal; a second control unit configured to control the attitude sensor to monitor an angle difference between the linear sensor and a moving direction of the breaker to obtain a second target signal; a third control unit configured to control the mechanical characteristic tester to correct the first target signal based on the second target signal to obtain a third target signal, and correct a breaker stroke of the moving part based on the third target signal to obtain a target breaker stroke; and a calculation unit configured to calculate an opening and closing speed of the breaker based on the target breaker stroke to obtain a target speed.

[0018] According to still another aspect of the present application, there is provided a computer readable storage medium including a stored program, wherein the program, when executed, controls a device in which the computer readable storage medium is located to perform any of the methods.

[0019] According to yet another aspect of the present application, there is provided 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 configured to be executed by the one or more processors, the one or more programs comprising instructions for performing any of the methods described.

[0020] The technical solution of the present application can significantly improve the accuracy and reliability of circuit breaker mechanical characteristic testing. By installing a linear sensor and an attitude sensor on the circuit breaker and using the signal of the attitude sensor to correct the potential signal of the linear sensor, the stroke of the circuit breaker is accurately corrected, and the calculation of the linear velocity is more accurate. Compared with the prior art, the present application uses a simple device structure, significantly reduces the complexity and cost of the system, and avoids the investment of high-precision camera equipment and complex image processing algorithms. This technical solution not only improves the measurement accuracy, but also makes the system more easily integrated and field-modified, improving the flexibility of application. By effectively eliminating the influence of installation errors on the measurement results, the demand for high-precision testing is met, and the problem of difficult accurate measurement of the linear velocity of the circuit breaker in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structural block diagram of a corrected measurement system of the linear velocity of a circuit breaker according to an embodiment of the present application is shown;

[0022] Figure 2 A flowchart of a corrected measurement method of the linear velocity of a circuit breaker according to an embodiment of the present application is shown;

[0023] Figure 3 An angle offset diagram of the linear motion of a circuit breaker according to an embodiment of the present application is shown;

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

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In the following, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings of the embodiments of the present application, so that those skilled in the art can better understand the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0028] As introduced in the background, the existing technology still has problems such as low precision, complex installation and high cost in the test of the speed and mechanical characteristics of the circuit breaker. In order to solve the problem that the straight-line speed of the circuit breaker cannot be accurately measured in the prior art, the embodiments of the present application provide a correction measurement method for the straight-line speed of a circuit breaker, a correction measurement device for the straight-line speed of a circuit breaker, a computer readable storage medium and a circuit breaker monitoring system.

[0029] In the following, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings of the embodiments of the present application, so that those skilled in the art can better understand the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0030] In the present embodiment, a correction measurement method for the straight-line speed of a circuit breaker running in a correction measurement system for the straight-line speed of the 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 the logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in a different order.

[0031] Figure 1 is a flowchart of a correction measurement system for the straight-line speed of a circuit breaker according to the embodiments of the present application. As Figure 1As shown, the linear velocity correction measurement system of the circuit breaker includes a linear sensor, an attitude sensor, a mechanical characteristic 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 time is corrected for real-time measurement of the linear displacement of the circuit breaker. The attitude sensor is installed on the linear sensor and is responsible for detecting the relative attitude change of the linear sensor. By obtaining the change amount of the angle or displacement, the correction of the linear sensor potential signal is provided. The mechanical characteristic tester is used to receive and process the signals of the linear sensor and the attitude sensor, so as to correct the stroke of the circuit breaker in real time, and calculate the linear velocity of the circuit breaker based on the corrected signal, so as to ensure the accuracy and reliability of the test result. The system effectively improves the accuracy of the linear velocity measurement of the circuit breaker by correcting the linear sensor signal, and solves the problem of large measurement error and difficult accurate evaluation in the prior art.

[0032] Figure 2 is a flowchart of a linear velocity correction measurement method of a circuit breaker according to an embodiment of the present application, Figure 3 is an angle offset schematic diagram of linear motion of a circuit breaker according to an embodiment of the present application. As Figure 2 and Figure 3 As shown, the method comprises the following steps:

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

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

[0035] Step S202, controlling the attitude sensor to monitor the angle difference between the linear sensor and the motion 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 motion direction at each sampling time, and monitors the angle difference θ(nT) between the attitude sensor and the motion direction at each sampling time. 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, so as to ensure that the obtained linear displacement signal is not affected by the angle error, and to provide necessary angle correction data for subsequent signal correction.

[0037] In step S203, the mechanical characteristic tester corrects the error of the first target signal caused by the deviation of the direction of the linear sensor from the motion direction based on the second target signal to obtain a third target signal, and corrects the breaker travel of the motion component based on the third target signal to obtain a target breaker travel;

[0038] Specifically, the mechanical characteristic tester corrects 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 of the sensor direction from the motion direction. This can ensure the calculation accuracy of the breaker travel, and further provide more accurate basic data for subsequent speed calculation.

[0039] In step S204, the opening and closing speed of the breaker is calculated based on the target breaker travel to obtain a target speed.

[0040] Specifically, the opening and closing speed of the breaker can be calculated more accurately by using the corrected breaker travel data, which provides accurate motion parameters for performance evaluation and optimization of the breaker. This calculation process ensures the accuracy of the speed measurement and evaluation results of the breaker under different working conditions.

[0041] Through the embodiment, the accuracy and reliability of the linear speed measurement of the breaker can be significantly improved. Specifically, the potential signal of the motion component of the breaker is monitored in real time by the 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 motion direction is measured and monitored by the attitude sensor to obtain the second target signal to correct the error caused by the deviation of the sensor direction. 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 breaker travel data is more accurate. The application installs the linear sensor and the attitude sensor on the breaker, corrects the potential signal of the linear sensor by the signal of the attitude sensor, and corrects the breaker travel based on the corrected potential signal to ensure the accuracy of the linear speed calculation. Compared with the prior art, the application realizes accurate measurement of the linear speed of the breaker by a simple device, reduces the cost and simplifies the structure compared with the prior art based on visual technology for testing the mechanical characteristic parameters of the breaker, and improves the measurement accuracy compared with the prior art of directly measuring by the linear sensor. The method solves the problem of difficult accurate measurement of the linear speed of the breaker in the prior art.

[0042] As a possible implementation manner, the mechanical characteristic tester corrects the first target signal based on the second target signal to obtain a third target signal, including:

[0043] The first target signal and the second target signal are substituted into the first preset formula to obtain the third target signal:

[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 the corrected potential signal V2(nT). Through the above formula, the sampling potential signal of the linear resistance sensor can be corrected to obtain the corrected potential signal, so as to eliminate the error caused by the angle deviation between the direction of the linear sensor and the movement direction.

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

[0049] Step S301, traverse the third target signal, and intercept the third target signal meeting the first preset condition to determine the 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 the breaker is closed or opened, and V3 is the fourth target signal.

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

[0051] Step S302, traverse the third target signal, and intercept the third target signal meeting the second preset condition to determine the fifth target signal, the second preset condition being V4=V2(T)=V1, wherein V1 is the potential value of the third target signal before the breaker is closed or opened, and V4 is the fifth target signal.

[0052] Specifically, the second preset condition is that, at the moment when the potential signal is stable before the circuit breaker is opened and closed, the third target signal should be stable and meet the condition, that is, the potential signal V2(nT) is stable before the circuit breaker is opened and closed, and the 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 in the measurement process is further ensured, the influence of disturbance before opening and closing is avoided, the correction of the signal is more accurate, and the influence of unstable potential signal or error on the stroke correction is avoided.

[0053] In step S303, 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.

[0054] Specifically, the correction method of the stroke is to eliminate the deviation in the signal by linear mapping or other correction algorithms, so as to obtain the accurate stroke of the circuit breaker.

[0055] Therefore, by combining the stable signals before and after opening and closing, the circuit breaker stroke is corrected, the stroke measurement error caused by installation error, environmental change or short-term interference and other factors can be eliminated, and more accurate circuit breaker stroke data can be realized. This process effectively improves the accuracy of the circuit breaker performance test, and provides reliable data support for subsequent speed calculation.

[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 a target circuit breaker stroke, including:

[0057] The fourth target signal and the fifth target signal are substituted 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 stroke of the circuit breaker 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 stroke of the circuit breaker before correction L, the corrected potential signal V2(nT) is linearly corresponding to the target circuit breaker stroke L(nT) to obtain the target circuit breaker stroke L(nT).

[0059] Therefore, by deviation correction of the fourth target signal and the fifth target signal, the error caused by sensor installation angle or external factors can be eliminated, and more accurate circuit breaker stroke data can be obtained. The corrected target circuit breaker stroke reflects the actual movement of the circuit breaker, thereby providing more accurate basic data for subsequent speed calculation. The core advantage of this method is that the circuit breaker stroke can be accurately corrected by simple linear mapping relationship, which improves the measurement accuracy and reliability, and has lower error and higher practicability compared with the traditional method.

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

[0061] The target circuit breaker is formed into a third preset formula to calculate the target speed: Wherein, v is the target speed, n1 and n2 are the n1 and n2 sampling periods.

[0062] Specifically, the speed is calculated by the difference between the sampling times, which can accurately reflect the actual motion of the circuit breaker during opening and closing. 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 due to sensor error or external interference factors. At the same time, this method has the advantages of simple structure and easy implementation, which can obtain high-precision opening and closing speed data without increasing complex hardware, improving the test efficiency and accuracy.

[0063] As a possible implementation, 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 circuit breaker moving part, which is suitable for applications requiring high-precision position measurement. By measuring the displacement of the circuit breaker moving part, the linear displacement sensor can provide a potential signal reflecting the relative position change of the moving part. The acceleration sensor is used to measure the acceleration change of the moving part, which can provide a potential signal related to the speed change. In some cases, the selection of the acceleration sensor can obtain indirect information related to displacement, which is convenient for obtaining the change of speed and displacement by 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, and the two sensors can be used independently or in combination according to the needs.

[0066] As a possible implementation, 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 part, which can provide information about the change of the moving direction. By integrating the angular velocity signal of the gyroscope, the angular change of the circuit breaker moving part can be obtained, and the angle difference with the moving direction can be calculated. The magnetometer is used to measure the direction of the geomagnetic field, which helps to determine the direction of the attitude sensor. Especially in the case of large external environment change, the magnetometer can provide a reference value to determine the orientation of the moving part.

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

[0069] The embodiment of the present application further provides a device for correcting the linear speed of a circuit breaker. It should be noted that the device for correcting the linear speed of a circuit breaker in the embodiment of the present application can be used to execute the method for correcting the linear speed of a circuit breaker provided by the embodiment of the present application. The device is used to realize the above-mentioned embodiments and preferred embodiments, and the description of which has been made above. As used below, the term "module" can be a combination of software and / or hardware that realizes a predetermined function. Although the device described in the following embodiments is preferably realized in software, realization in hardware or a combination of software and hardware is also possible and contemplated.

[0070] The device for correcting the linear speed of a circuit breaker provided by the embodiment of the present application is described below.

[0071] The device for correcting the linear speed of a circuit breaker provided by the embodiment of the present application is described below. Figure 4 is a structural block diagram of the device for correcting the linear speed of a circuit breaker according to the embodiment of the present application. As shown in Figure 4 , the device comprises a first control unit 10, a second control unit 20, a third control unit 30 and a calculation unit 40.

[0072] The first control unit 10 is configured to control the linear sensor to monitor the moving part and extract the potential signal of the linear sensor at each time to obtain a first target signal.

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

[0074] The second control unit 20 is configured to control the attitude sensor to monitor the angle difference between the linear sensor and the moving 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 motion direction at each sampling time, and monitors the angle difference θ (nT) between the attitude sensor and the motion direction at each sampling time. 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 obtained linear displacement signal is not affected by the angle error, and provide the necessary angle correction data for subsequent signal correction.

[0076] The third control unit 30 is configured to control the mechanical characteristic tester to correct the first target signal based on the second target signal to obtain a third target signal, and correct the breaker travel of the moving part based on the third target signal to obtain a target breaker travel.

[0077] Specifically, the mechanical characteristic tester corrects the potential signal obtained by the linear sensor according to the angle signal provided by the attitude sensor, and eliminates the measurement error caused by the deviation of the sensor direction and the motion direction. This can ensure the calculation accuracy of the breaker travel, and further provide more accurate basic data for subsequent speed calculation.

[0078] The calculation unit 40 is configured to calculate the opening and closing speed of the breaker based on the target breaker travel to obtain a target speed.

[0079] Specifically, by correcting the breaker travel data, the opening and closing speed of the breaker can be calculated more accurately, and accurate motion parameters can be provided for performance evaluation and optimization of the breaker. This calculation process ensures the accuracy of the speed measurement and evaluation results of the breaker under different working conditions.

[0080] By the embodiment, a linear velocity correction measurement device of a circuit breaker is provided, which comprises a first control unit, a second control unit, a third control unit and a calculation unit. The first control unit is configured to control the linear sensor to monitor the moving part and extract the potential signal of the linear sensor at each time to obtain a first target signal; the second control unit is configured to control the attitude 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 configured to correct the first target signal based on the second target signal by the mechanical characteristic tester to obtain a third target signal, and correct the circuit breaker stroke of the moving part based on the third target signal to obtain a target circuit breaker stroke; and the calculation unit is configured 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 the linear sensor and the attitude sensor on the circuit breaker, corrects the potential signal of the linear sensor by the signal of the attitude sensor, and corrects the circuit breaker stroke based on the corrected potential signal, so as to ensure the accuracy of the linear velocity calculation. Compared with the prior art, the device itself can realize the accurate measurement of the linear velocity of the circuit breaker, and compared with the prior art, the device reduces the cost and simplifies the structure for easy modification. Compared with the prior art, the device improves the measurement accuracy, and the method solves the problem that the accurate measurement of the linear velocity of the circuit breaker is difficult to realize in the prior art.

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

[0082] The first formula module is configured to substitute the first target signal and the second target signal into a first preset formula to obtain the 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 a sampling period of the linear sensor, n is a 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 sampled potential signal V1(nT) of the linear resistance sensor is corrected to obtain a corrected potential signal V2(nT). By the above formula, the sampled potential signal of the linear resistance sensor can be corrected to obtain the corrected potential signal, so as to eliminate the error caused by the angle deviation between the direction of the linear sensor and the moving direction.

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

[0087] The first intercepting module is configured to traverse the third target signal, intercept the third target signal satisfying a first preset condition to determine a fourth target signal, and the first preset condition is V3=V2(NT), where NT represents a sampling time when the third target signal is stable after the opening and closing of the circuit breaker, and V3 is the fourth target signal.

[0088] Specifically, the first preset condition is that the third target signal should be stable and satisfy the condition at the time when the potential signal is stable after the opening and closing of the circuit breaker, that is, the potential signal V2(nT) is stable, and the value is V2(T)=V1. By intercepting the stable signal part, inaccurate data caused by signal fluctuation or short-term interference can be eliminated, and the corrected stroke 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 stroke correction.

[0089] The second intercepting module is configured to traverse the third target signal, intercept the third target signal satisfying a second preset condition to determine a fifth target signal, and the second preset condition is V4=V2(T)=V1, where V1 is the potential value of the third target signal before the opening and closing of the circuit breaker, and V4 is the fifth target signal.

[0090] Specifically, the second preset condition is that the third target signal should be stable and satisfy the condition at the time when the potential signal is stable before the opening and closing of the circuit breaker, that is, the potential signal V2(nT) is stable, and the value is V2(T)=V1. By intercepting the stable signal before the opening and closing of the circuit breaker, the accuracy of the circuit breaker state during the measurement is further ensured, the disturbance before the opening and closing is avoided, 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 configured to correct the circuit breaker stroke of the moving part based on the fourth target signal and the fifth target signal to obtain a target circuit breaker stroke.

[0092] Specifically, the correction method of the stroke is to eliminate the deviation in the signal by linear mapping or other correction algorithms, so as to obtain the accurate stroke of the circuit breaker.

[0093] Therefore, by combining the stable signals before and after the opening and closing, the circuit breaker stroke is corrected, the stroke measurement error caused by installation error, environmental change or short-term interference and other factors can be eliminated, and more accurate circuit breaker stroke data can be obtained. This process effectively improves the accuracy of the performance test of the circuit breaker and provides reliable data support for subsequent speed calculation.

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

[0095] The second formula submodule is configured to substitute the fourth target signal and the fifth target signal into a second preset formula to calculate a target circuit breaker stroke L(nT): 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 target circuit breaker stroke L(nT) is linearly corresponded to the corrected potential signal V2(nT).

[0097] Therefore, through the deviation correction of the fourth target signal and the fifth target signal, the error caused by the sensor installation angle or external factors can be eliminated, and more accurate circuit breaker stroke data can be ensured. The corrected target circuit breaker stroke reflects the actual movement of the circuit breaker, thereby providing more accurate basic data for subsequent speed calculation. The core advantage of this method is that it can accurately correct the circuit breaker stroke through a simple linear mapping relationship, thereby improving the measurement accuracy and reliability, and having lower error and higher practicability compared with traditional methods.

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

[0099] The third formula module is configured to substitute the target circuit breaker stroke into a third preset formula to calculate a target speed v: wherein, v is the target speed, and n1 and n2 are the nth1 and nth2 sampling periods.

[0100] Specifically, the speed is calculated through the difference between the sampling time, which can accurately reflect the actual movement of the circuit breaker during the opening and closing process. Compared with traditional methods, 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, and can obtain high-precision opening and closing speed data without increasing complex hardware, thereby improving the test efficiency and accuracy.

[0101] The above-described correction measurement device for the linear speed of the circuit breaker comprises a processor and a memory, the first control unit, the second control unit, the third control unit, and the calculation unit are all stored in the memory as program units, and the corresponding functions are realized by the processor executing the program units stored in the memory. The above-described modules are located in the same processor; or, the modules are located in different processors in any combination.

[0102] The processor includes a core, and the core retrieves corresponding program units in the memory. The core can be one or more, and the precision measurement of the straight-line speed of the circuit breaker in the prior art can be solved by adjusting the core parameters.

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

[0104] The embodiment of the present application provides a computer readable storage medium, and the computer readable storage medium includes a stored program, wherein the program controls a device where the computer readable storage medium is located to perform the correction measurement method of the straight-line speed of the circuit breaker when the program runs.

[0105] The embodiment of the present application provides a circuit breaker monitoring system, including one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include the correction measurement method of the straight-line speed of the circuit breaker.

[0106] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be realized by general computing devices, and they can be concentrated on a single computing device or distributed on a network composed of multiple computing devices, and they can be realized by program codes executable by the computing devices, so that they can be stored in storage devices and executed by the computing devices, and in some cases, the steps shown or described can be executed in different sequences, or they can be manufactured into individual integrated circuit modules or multiple modules or steps into a single integrated circuit module. Therefore, the present application is not limited to any specific combination of hardware and software.

[0107] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can adopt a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt a computer program product in the form of one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program codes.

[0108] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0109] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0110] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

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

[0112] The memory can include non-persistent memory and / or persistent memory, for example, read only memory (ROM) and / or flash memory, for example, in the form of a computer readable storage medium. The memory is an example of computer readable media.

[0113] Computer-readable media includes permanent and non-permanent, movable and non-movable media that can be implemented by any method or technology to store information. The 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 technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible by a computing device. According to the definition herein, computer-readable media does not include transitory media such as modulated data signals and carriers.

[0114] It should also be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

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

[0116] 1) The rectilinear velocity correction measurement method of the circuit breaker of the present application can significantly improve the accuracy and reliability of the rectilinear velocity measurement of the circuit breaker. Specifically, first, the potential signal of the moving part of the circuit breaker is monitored in real time by the linear sensor, and the first target signal is extracted, providing basic data for subsequent accurate calculation. Then, the angle difference between the linear sensor and the movement direction is measured and monitored by using the attitude sensor, and the second target signal is obtained to correct the error caused by the deviation of the sensor direction. 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 linear sensor and the attitude sensor are installed on the circuit breaker, the potential signal of the linear sensor is corrected by the signal of the attitude sensor, and the circuit breaker stroke is corrected based on the corrected potential signal to ensure the accuracy of the rectilinear velocity calculation. Compared with the prior art, the present application realizes accurate measurement of the rectilinear velocity of the circuit breaker by a simple device, reduces the cost compared with the prior art based on visual technology, simplifies the structure and is convenient for modification, and improves the measurement accuracy compared with the prior art by directly measuring with a linear sensor. The method solves the problem of difficult accurate measurement of the rectilinear velocity of the circuit breaker in the prior art.

[0117] 2) The rectilinear velocity correction measurement device of the circuit breaker of the present application, the device 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 part and extract the potential signal of the linear sensor at each time to obtain the first target signal; the second control unit 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 the second target signal; the third control unit is used to control the mechanical characteristic tester to correct the first target signal based on the second target signal to obtain the third target signal, and correct the circuit breaker stroke of the moving part 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 an attitude sensor on the circuit breaker, corrects the potential signal of the linear sensor by the signal of the attitude sensor, and corrects the circuit breaker stroke based on the corrected potential signal to ensure the accuracy of the rectilinear velocity calculation. Compared with the prior art, the present application realizes accurate measurement of the rectilinear velocity of the circuit breaker by a simple device, reduces the cost compared with the prior art based on visual technology, simplifies the structure and is convenient for modification, and improves the measurement accuracy compared with the prior art by directly measuring with a linear sensor. The method solves the problem of difficult accurate measurement of the rectilinear velocity of the circuit breaker in the prior art.

[0118] The above merely provides preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A method of correcting a measurement of linear velocity of a circuit breaker, characterized by, The rectilinear velocity correction measurement system of the circuit breaker comprises a rectilinear sensor, an attitude sensor, a mechanical characteristic tester and a circuit breaker, the rectilinear sensor is installed on a moving part of the circuit breaker, the attitude sensor is installed on the rectilinear sensor, and the method comprises: controlling the rectilinear sensor to monitor the moving part and extracting a potential signal of the rectilinear sensor at each time to obtain a first target signal; controlling the attitude sensor to monitor an angle difference between the rectilinear sensor and a moving direction of the circuit breaker to obtain a second target signal; controlling the mechanical characteristic tester to correct an error of the first target signal caused by a deviation of a direction of the rectilinear sensor from the moving direction based on the second target signal to obtain a third target signal, and correcting a circuit breaker stroke of the moving part based on the third target signal to obtain a target circuit breaker stroke; controlling the mechanical characteristic 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 to obtain the third target signal: ； wherein, is a sampling period of the linear sensor, is a number of the sampling period, is the third target signal, is the first target signal, is the second target signal; correcting the circuit breaker stroke of the moving part based on the third target signal to obtain a target circuit breaker stroke, and the method further comprises: Traverse the third target signal, intercept the third target signal meeting the first preset condition to determine the fourth target signal, the first preset condition is Wherein, NT represents the sampling time when the third target signal is stable after closing and opening, The fourth target signal; Traverse the third target signal, intercept the third target signal meeting the second preset condition to determine the fifth target signal, the second preset condition is Wherein, The third target signal potential value before the opening and closing, The fifth target signal; correcting the circuit breaker stroke of the moving part based on the fourth target signal and the fifth target signal to obtain a target circuit breaker stroke.

2. The method of claim 1, wherein, correcting the circuit breaker stroke of the moving part 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, is the target breaker travel, is the total breaker travel before correction, is the deviation between the third target signal and the first target signal.

3. The method of claim 2, wherein, calculating the opening and closing speed of the circuit breaker based on the target circuit breaker stroke to obtain a target speed, comprising: substituting the target circuit breaker stroke into a third preset formula to calculate the target speed: ； wherein v is the target speed, n1 and n2 are the nth1 and nth2 sampling periods.

4. The method of claim 1, wherein, The rectilinear sensor comprises at least one of a rectilinear displacement sensor and an acceleration sensor.

5. The method of claim 1, wherein, The attitude sensor comprises at least one of a gyroscope and a magnetometer.

6. A device for correcting the measurement of the linear speed of a circuit breaker, characterized in that it comprises: The rectilinear velocity correction measurement system of the circuit breaker comprises a rectilinear sensor, an attitude sensor, a mechanical characteristic tester and a circuit breaker, the rectilinear sensor is installed on a moving part of the circuit breaker, the attitude sensor is installed on the rectilinear sensor, and the device comprises: a first control unit configured to control the rectilinear sensor to monitor the moving part and extract a potential signal of the rectilinear sensor at each time to obtain a first target signal; a second control unit configured to control the attitude sensor to monitor an angle difference between the rectilinear sensor and a moving direction of the circuit breaker to obtain a second target signal; The third control unit is configured to control the mechanical characteristic tester to correct the first target signal based on the second target signal to obtain a third target signal, and correct the breaker travel of the moving component based on the third target signal to obtain a target breaker travel; The computing unit is configured to calculate the opening and closing speed of the breaker based on the target breaker travel to obtain a target speed; The third control unit comprises a first formula module configured to substitute the first target signal and the second target signal into a first preset formula to obtain the third target signal. ； wherein, is a sampling period of the linear sensor, is a number of the sampling period, is the third target signal, is the first target signal, is the second target signal; The third control unit further comprises: The first intercepting module is configured to traverse the third target signal, intercept the third target signal satisfying a first preset condition to determine a fourth target signal, and the first preset condition is wherein, NT represents a sampling time when the third target signal is stable after the opening and closing, the fourth target signal. A second intercepting module is configured to traverse the third target signal, intercept the third target signal satisfying a second preset condition to determine a fifth target signal, and the second preset condition is wherein, is the third target signal before opening and closing, is the fifth target signal. The correction module is configured to correct the breaker travel of the moving component based on the fourth target signal and the fifth target signal to obtain a target breaker travel.

7. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises a stored program, wherein the program controls the device where the computer readable storage medium is located to execute the method in any one of claims 1 to 3 when the program is running.

8. A circuit breaker monitoring system characterized by, The device comprises: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs comprise a program for executing the method in any one of claims 1 to 3.

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