A measurement system and a measurement method for a rotational displacement sensor

Abstract

The present invention provides a measurement system and method for a rotational displacement sensor. The system includes: a construction module for constructing the rotational displacement sensor based on a tile-shaped magnet and according to a preset scheme; a magnetization mode selection module for obtaining the magnetization mode of the constructed rotational displacement sensor; and a measurement module for measuring the rotational displacement position and rotation angle of an object under test based on the rotational displacement sensor and the magnetization mode. The tile-shaped magnet ensures sufficient linearity and magnetic induction intensity within the rotational displacement range without increasing the magnet volume or magnet material, thereby ensuring sufficient accuracy and detectability. Different magnetization modes enable specific analysis of a specific object under test, thereby achieving precise measurement of the object's rotational displacement position and rotation angle.

Description

Technical Field

[0001] The present invention relates to the field of sensor measurement technology, and in particular to a measurement system and a measurement method of a rotation displacement sensor. Background Art

[0002] At present, the magnets used in displacement position magnetic sensors are usually cylindrical or rectangular structures. Their principle is to use the corresponding relationship between the magnitude of the magnetic induction intensity perpendicular to the magnet axis and the position of the magnet, thereby converting the magnetic induction intensity perpendicular to the magnet axis into the corresponding magnet position signal.

[0003] Cylindrical or rectangular magnet structures are suitable for linear displacement position detection. However, when magnets with this structure are used for rotational displacement position detection, the detected displacement position no longer coincides with the axis of the magnet, resulting in a decrease in magnetic induction intensity near the two ends of the displacement range. In order to ensure sufficient accuracy and detectability, the volume of the magnet must be increased or better magnet material must be used, which leads to an increase in product cost.

[0004] Therefore, the present invention provides a measurement system and method for a rotational displacement sensor, which uses a magnet with a tile-shaped structure. Unlike previous cylindrical or rectangular magnet structures, the tile-shaped magnet can ensure that the magnetic induction intensity within the rotational displacement range is sufficiently linear and strong without increasing the magnet volume and magnet material, thereby ensuring sufficient accuracy and detectability. Summary of the Invention

[0005] The present invention provides a measurement system and method for a rotational displacement sensor, which uses a tile-shaped magnet to ensure that the magnetic induction intensity within the rotational displacement range is sufficiently linear and strong without increasing the magnet volume and magnet material, thereby ensuring sufficient accuracy and detectability. Through different magnetization methods, specific analysis of a specific object to be measured can be achieved, thereby achieving accurate measurement of the rotational displacement position and rotation angle of the object to be measured.

[0006] A measurement system for a rotational displacement sensor, comprising:

[0007] A construction module, used for constructing a rotation displacement sensor based on a tile-shaped magnet and according to a preset scheme;

[0008] A magnetization mode selection module, used to obtain the magnetization mode of the rotation displacement sensor after construction;

[0009] The measuring module is used to measure the rotation displacement position and the rotation angle of the object to be measured based on the rotation displacement sensor and according to the magnetization mode.

[0010] Preferably, a measurement system of a rotational displacement sensor, the construction module includes:

[0011] The first construction unit is used for:

[0012] Acquiring an actual displacement stroke, and determining the arc shape of the tile-shaped magnet and the length of the tile-shaped magnet based on the actual displacement stroke, wherein the length of the tile-shaped magnet is equal to or greater than the actual displacement stroke;

[0013] generating a first construction scheme based on the arc shape of the tile-shaped magnet and the length of the tile-shaped magnet, and sending the first construction scheme to a first monitoring device, while monitoring the first construction process of the tile-shaped magnet based on the first monitoring device;

[0014] The second structural unit is used for:

[0015] Obtaining the sensing position of the tile-shaped magnet and determining the vertical distance between the sensing position and the tile-shaped magnet, and determining the inner diameter, outer diameter, thickness of the tile-shaped magnet and the material of the tile-shaped magnet based on the vertical distance;

[0016] generating a second construction scheme based on the inner diameter, outer diameter, thickness of the tile-shaped magnet and the material of the tile-shaped magnet, and sending the second construction scheme to a second monitoring device; and monitoring the second construction process of the tile-shaped magnet based on the second monitoring device;

[0017] a third construction unit, configured to generate a third construction scheme based on the inner wall, the outer wall, and both ends of the arc shape of the tile-shaped magnet, and send the second construction scheme to a third monitoring device, while monitoring the third construction process of the tile-shaped magnet based on the third monitoring device;

[0018] The integration unit is used to complete the construction of the rotation displacement sensor based on the first construction process, the second construction process and the third construction process.

[0019] Preferably, in a measurement system of a rotational displacement sensor, in the magnetization mode selection module:

[0020] The magnetization modes of the rotation displacement sensor include: magnetization of the tile-shaped magnet in the length direction, magnetization of the tile-shaped magnet in the thickness direction, and magnetization of the tile-shaped magnet in the radial direction.

[0021] Preferably, a measurement system for a rotational displacement sensor, wherein the measurement module comprises:

[0022] The magnetic induction intensity distribution acquisition unit is used to:

[0023] Reading the magnetization mode, and determining the magnetic induction intensity distribution of the object to be measured by the rotation displacement sensor in the magnetization mode,

[0024] The magnetic induction intensity distribution is a three-dimensional distribution, including: Bx distribution, By distribution and Bz distribution;

[0025] The measuring and calculating unit is used to obtain the distribution intensity value corresponding to the magnetic induction intensity distribution, and calculate the rotation displacement position and rotation angle of the object to be measured based on the distribution intensity value.

[0026] Preferably, in a measurement system of a rotational displacement sensor, the measurement calculation unit includes:

[0027] The first computing subunit is configured to:

[0028] When the magnetization method is that the tile-shaped magnet is magnetized in the length direction, it includes a first measuring end and a second measuring end;

[0029] determining a rotational displacement position and a rotation angle of the object to be measured based on the first measuring end or the second measuring end;

[0030] The first measuring end is used to read the Bz distribution intensity value of the object to be measured by the rotation displacement sensor, and determine the rotation displacement position and rotation angle of the object to be measured based on the Hall effect;

[0031] The second measuring end is used for:

[0032] Respectively reading the Bx distribution intensity value, the By distribution intensity value, and the Bz distribution intensity value of the object to be measured by the rotation displacement sensor;

[0033] Randomly select any two of the Bx distribution intensity values, the By distribution intensity value, and the Bz distribution intensity value to perform a first inverse tangent operation, and determine the rotational displacement position and rotation angle of the object to be measured based on the first inverse tangent operation result.

[0034] Preferably, in a measurement system of a rotational displacement sensor, the measurement calculation unit includes:

[0035] a distribution intensity value acquisition subunit, configured to obtain the Bx distribution intensity value, the By distribution intensity value, and the Bz distribution intensity value of the object to be measured by the rotational displacement sensor when the magnetization mode is that the tile-shaped magnet is magnetized in the thickness direction or when the tile-shaped magnet is magnetized in the radial direction;

[0036] An operation subunit is used to randomly select any two distribution intensity values ​​from the Bx distribution intensity value, the By distribution intensity value, and the Bz distribution intensity value to perform a second inverse tangent operation, and determine the rotational displacement position of the object to be measured and the rotation angle of the object to be measured based on a one-to-one correspondence between the second inverse tangent operation result and the rotational displacement position of the object to be measured and the rotation angle of the object to be measured.

[0037] Preferably, a measurement system for a rotational displacement sensor further includes:

[0038] A signal collection module, configured to collect a measurement signal of the rotational displacement sensor on the object to be measured;

[0039] The signal processing module is used to process the measurement signal of the object to be measured and obtain the target measurement signal based on the processing result:

[0040] A signal transmission module, configured to transmit the target measurement signal to a target monitoring terminal based on the cloud, and convert the target measurement signal into target measurement data in the target monitoring terminal;

[0041] a model building module, configured to obtain measurement characteristics of the rotational displacement sensor and build a measurement parameter model of the rotational displacement sensor according to the measurement characteristics of the rotational displacement sensor;

[0042] The module for obtaining the measurement results of the object to be measured is used to:

[0043] Inputting the target measurement data into the measurement parameter model for analysis, and outputting a first rotational displacement position and a first rotation angle of the object to be measured based on the analysis result;

[0044] Calculating the target measurement data to determine a second rotational displacement position and a second rotation angle of the object to be measured;

[0045] Comparing the first rotational displacement position with the second rotational displacement position to obtain a first target difference, and at the same time, comparing the first rotation angle with the second rotation angle to obtain a second target difference;

[0046] An evaluation module is configured to generate an accuracy evaluation result of the rotation displacement sensor according to the first target difference and the second target difference.

[0047] Preferably, in a measurement system of a rotational displacement sensor, the evaluation module comprises:

[0048] a first level confirmation unit, configured to determine that the accuracy evaluation result of the rotation displacement sensor is at a first level when the first target difference is within a first preset target interval and the second target difference is within a second preset target interval;

[0049] a second level confirmation unit, configured to determine that the accuracy evaluation result of the rotational displacement sensor is a second level when the first target difference is within the first preset target interval and the second target difference is not within the second preset target interval, or when the first target difference is not within the first preset target interval and the second target difference is not within the second target interval;

[0050] The third level confirmation unit is configured to determine that the accuracy evaluation result of the rotation displacement sensor is at the third level when the first target difference is not within a first preset target interval and the second target difference is not within a second preset target interval.

[0051] Preferably, in a measurement system of a rotational displacement sensor, the signal processing module includes:

[0052] a signal reading unit, configured to read the measurement signal, determine a signal characterization parameter of the measurement signal, and determine a first signal band of the measurement signal based on the signal characterization parameter;

[0053] a signal analysis unit, configured to compare the measurement signal with the first signal band to determine a second signal band of the measurement signal;

[0054] Signal filtering unit for:

[0055] reading a band characteristic of the second signal band, and determining a signal boundary and a noise type of the second signal based on the band characteristic of the second signal band;

[0056] using the signal boundary as a filtering boundary for the measurement signal, and determining a filtering template for filtering the measurement signal based on the noise type;

[0057] performing a first filtering on the second signal band in the measurement signal based on the filtering boundary, and performing a second filtering on the second signal band in the measurement signal based on the filtering template after the first filtering;

[0058] The target measurement signal is obtained based on the first filtering and the second filtering.

[0059] A method for measuring a rotational displacement sensor, comprising:

[0060] Step 1: Construct a rotation displacement sensor based on a tile-shaped magnet and according to a preset scheme;

[0061] Step 2: Obtaining the magnetization mode of the constructed rotation displacement sensor;

[0062] Step 3: Measure the rotational displacement position and rotation angle of the object to be measured based on the rotational displacement sensor and the magnetization method.

[0063] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purposes and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0064] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0066] Figure 1 1 is a structural diagram of a measurement system of a rotation displacement sensor according to an embodiment of the present invention;

[0067] Figure 2 A structural diagram of a tile-shaped magnet magnetized in the longitudinal direction according to an embodiment of the present invention;

[0068] Figure 3 A structural diagram of a tile-shaped magnet magnetized in the thickness direction according to an embodiment of the present invention;

[0069] Figure 4 This is a structural diagram of radial magnetization of a tile-shaped magnet in an embodiment of the present invention;

[0070] Figure 5 This is a structural diagram of a tile-shaped magnet structure in an embodiment of the present invention;

[0071] Figure 6 A structural diagram of the magnetic induction intensity distribution of the tile-shaped magnet when magnetized in the longitudinal direction according to an embodiment of the present invention;

[0072] Figure 7 A structural diagram of the magnetic induction intensity distribution of a tile-shaped magnet when magnetized in the thickness direction according to an embodiment of the present invention;

[0073] Figure 8 A structural diagram of the magnetic induction intensity distribution of a tile-shaped magnet during radial magnetization according to an embodiment of the present invention;

[0074] Figure 9 This is a flow chart of a rotation displacement sensor and its measurement method in an embodiment of the present invention. DETAILED DESCRIPTION

[0075] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0076] Example 1:

[0077] This embodiment provides a measurement system for a rotation displacement sensor, such as Figure 1 Shown, including:

[0078] A construction module, used for constructing a rotation displacement sensor based on a tile-shaped magnet and according to a preset scheme;

[0079] A magnetization mode selection module, used to obtain the magnetization mode of the rotation displacement sensor after construction;

[0080] The measuring module is configured to measure the rotational displacement position and the rotation angle of the object to be measured based on the rotational displacement sensor and according to the magnetization mode.

[0081] In this embodiment, the preset scheme can be determined based on the arc shape, length, inner diameter, outer diameter, thickness, material, etc. of the tile-shaped magnet, and is used to construct the rotation displacement sensor.

[0082] In this embodiment, the magnetization method includes: magnetizing the tile-shaped magnet in the length direction (such as Figure 2 As shown), tile-shaped magnets are magnetized in the thickness direction (as shown Figure 3 As shown) and tile magnets in the radial direction (as shown Figure 4 As shown in the figure, when magnetized in the length direction, the magnetic induction intensity perpendicular to the displacement stroke has good linearity in the entire formation range, which can be used for the design of linear magnetic sensors as well as the design of three-axis angle sensors; when magnetized in the thickness direction and radial direction, it can be used for the design of three-axis angle sensors; because the shape of the magnet coincides with the displacement stroke, a better magnetic field distribution is obtained than that of cylindrical and rectangular magnets.

[0083] In this embodiment, the present invention adopts a magnet with a tile-shaped structure, which is different from the previous cylindrical or rectangular magnet structure. The tile-shaped magnet can ensure that the magnetic induction intensity within the rotational displacement range is sufficiently linear and strong without increasing the volume of the magnet and the material of the magnet, thereby ensuring sufficient accuracy and detectability.

[0084] The beneficial effect of the above technical solution is that the tile-shaped magnet can ensure that the magnetic induction intensity is sufficiently linear and strong within the rotational displacement range without increasing the volume and material of the magnet, thereby ensuring sufficient accuracy and detectability. Through different magnetization methods, specific analysis of the specific object to be measured can be achieved, and then the rotational displacement position and rotation angle of the object to be measured can be accurately measured.

[0085] Example 2:

[0086] Based on Example 1, this embodiment provides a measurement system for a rotation displacement sensor, wherein the construction module includes:

[0087] The first construction unit is used for:

[0088] Acquiring an actual displacement stroke, and determining the arc shape of the tile-shaped magnet and the length of the tile-shaped magnet based on the actual displacement stroke, wherein the length of the tile-shaped magnet is equal to or greater than the actual displacement stroke;

[0089] generating a first construction scheme based on the arc shape of the tile-shaped magnet and the length of the tile-shaped magnet, and sending the first construction scheme to a first monitoring device, while monitoring the first construction process of the tile-shaped magnet based on the first monitoring device;

[0090] The second structural unit is used for:

[0091] Obtaining the sensing position of the tile-shaped magnet and determining the vertical distance between the sensing position and the tile-shaped magnet, and determining the inner diameter, outer diameter, thickness of the tile-shaped magnet and the material of the tile-shaped magnet based on the vertical distance;

[0092] generating a second construction scheme based on the inner diameter, outer diameter, thickness of the tile-shaped magnet and the material of the tile-shaped magnet, and sending the second construction scheme to a second monitoring device; and monitoring the second construction process of the tile-shaped magnet based on the second monitoring device;

[0093] a third construction unit, configured to generate a third construction scheme based on the inner wall, the outer wall, and both ends of the arc shape of the tile-shaped magnet, and send the second construction scheme to a third monitoring device, while monitoring the third construction process of the tile-shaped magnet based on the third monitoring device;

[0094] The integration unit is used to complete the construction of the rotation displacement sensor based on the first construction process, the second construction process and the third construction process.

[0095] In this embodiment, the arc shape and length of the tile-shaped magnet are designed according to the actual displacement stroke, so that the length of the tile-shaped magnet is equal to or greater than the actual displacement stroke (such as Figure 5 As shown, 1 represents a tile-type magnet, 2 represents the actual displacement stroke, and 3 represents an anti-mock slot); the inner and outer diameters and thicknesses of the magnet, as well as the magnet material used, are designed based on the vertical distance between the sensing position and the magnet; some anti-mock structures are constructed on the arc-shaped inner or outer wall or both ends, and the structural asymmetry is used to prevent the north and south poles of the magnet from being unable to be identified during assembly.

[0096] In this embodiment, the first structural solution can be determined based on the arc shape of the tile-shaped magnet and the length of the tile-shaped magnet, and is a first structural solution for the tile-shaped magnet.

[0097] In this embodiment, the first monitoring device may be a device for monitoring the first construction process, and may be a camera device or the like.

[0098] In this embodiment, the second construction scheme can be determined based on the inner diameter, outer diameter, thickness and material of the tile-shaped magnet determined by the induction position of the tile-shaped magnet and the vertical distance of the tile-shaped magnet, which is a second construction scheme for the tile-shaped magnet.

[0099] In this embodiment, the second monitoring device may be a device for monitoring the second construction process, and may be a camera device or the like.

[0100] In this embodiment, the third structural solution can be determined based on the inner wall, outer wall and both ends of the arc shape of the tile-shaped magnet, which is a third structural solution for the tile-shaped magnet.

[0101] In this embodiment, the third monitoring device may be a device for monitoring the third construction process, and may be a camera device or the like.

[0102] The beneficial effect of the above technical solution is to ensure that the magnetic induction intensity is sufficiently linear and strong within the range of rotational displacement without increasing the volume and material of the magnet, thereby ensuring sufficient accuracy and detectability.

[0103] Example 3:

[0104] Based on Example 1, this embodiment provides a measurement system for a rotation displacement sensor, wherein the measurement module includes:

[0105] The magnetic induction intensity distribution acquisition unit is used to:

[0106] Reading the magnetization mode, and determining the magnetic induction intensity distribution of the object to be measured by the rotation displacement sensor in the magnetization mode,

[0107] The magnetic induction intensity distribution is a three-dimensional distribution, including: Bx distribution, By distribution and Bz distribution;

[0108] The measuring and calculating unit is used to obtain the distribution intensity value corresponding to the magnetic induction intensity distribution, and calculate the rotation displacement position and rotation angle of the object to be measured based on the distribution intensity value.

[0109] In this embodiment, Bx distribution represents the magnetic induction intensity distribution on the x-axis.

[0110] In this embodiment, By distribution represents the magnetic induction intensity distribution on the y-axis.

[0111] In this embodiment, Bz distribution represents the magnetic flux density distribution on the z-axis.

[0112] The beneficial effect of the above technical solution is that by determining the distribution intensity value corresponding to the magnetic induction intensity distribution, the rotation displacement position and rotation angle of the object to be measured can be accurately calculated.

[0113] Example 4:

[0114] Based on Example 3, this embodiment provides a measurement system for a rotation displacement sensor, wherein the measurement calculation unit is as follows: Figure 6 Shown, including:

[0115] The first computing subunit is configured to:

[0116] When the magnetization method is that the tile-shaped magnet is magnetized in the length direction, it includes a first measuring end and a second measuring end;

[0117] determining a rotational displacement position and a rotation angle of the object to be measured based on the first measuring end or the second measuring end;

[0118] The first measuring end is used to read the Bz distribution intensity value of the object to be measured by the rotation displacement sensor, and determine the rotation displacement position and rotation angle of the object to be measured based on the Hall effect;

[0119] The second measuring end is used for:

[0120] Respectively reading the Bx distribution intensity value, the By distribution intensity value, and the Bz distribution intensity value of the object to be measured by the rotation displacement sensor;

[0121] Randomly select any two of the Bx distribution intensity values, the By distribution intensity value, and the Bz distribution intensity value to perform a first inverse tangent operation, and determine the rotational displacement position and rotation angle of the object to be measured based on the first inverse tangent operation result.

[0122] In this embodiment, when the tile-shaped magnet of this design is magnetized in the longitudinal direction, the magnetic induction intensity Bz perpendicular to the rotational displacement stroke is roughly linearly related to the magnet's rotational position. Based on the relationship between Bz, the rotational displacement position, and the rotation angle, the Hall effect-based magnetic sensor can detect the rotational displacement position and rotation angle by measuring Bz. Alternatively, an inverse tangent operation can be performed on any two components of Bx, By, and Bz, and the resulting value also has a one-to-one correspondence with the rotational displacement position and rotation angle. Therefore, the rotational displacement position and rotation angle can also be detected based on the inverse tangent value.

[0123] The beneficial effect of the above technical solution is that when the tile-shaped magnet is magnetized in the length direction, the rotational displacement position and rotation angle of the object to be measured are accurately calculated through the first measuring end or the second measuring end. Multiple calculation methods make it more convenient to obtain the rotational displacement position and rotation angle of the object to be measured.

[0124] Example 5:

[0125] Based on Example 3, this embodiment provides a measurement system for a rotation displacement sensor, such as Figure 7-8 As shown, the measurement calculation unit includes:

[0126] a distribution intensity value acquisition subunit, configured to obtain the Bx distribution intensity value, the By distribution intensity value, and the Bz distribution intensity value of the object to be measured by the rotational displacement sensor when the magnetization mode is that the tile-shaped magnet is magnetized in the thickness direction or when the tile-shaped magnet is magnetized in the radial direction;

[0127] An operation subunit is used to randomly select any two distribution intensity values ​​from the Bx distribution intensity value, the By distribution intensity value, and the Bz distribution intensity value to perform a second inverse tangent operation, and determine the rotational displacement position of the object to be measured and the rotation angle of the object to be measured based on a one-to-one correspondence between the second inverse tangent operation result and the rotational displacement position of the object to be measured and the rotation angle of the object to be measured.

[0128] In this embodiment, when the tile-shaped magnet of this design is magnetized in the thickness direction, an inverse tangent operation can be performed on any two components of Bx, By, and Bz, and their values ​​also have a one-to-one correspondence with the rotational displacement position and the rotation angle. Accordingly, the rotational displacement position and the rotation angle can also be detected based on their inverse tangent values.

[0129] In this embodiment, when the tile-shaped magnet of this design is magnetized in the radial direction, the following will be obtained: Figure 7 The magnetic induction intensity distribution shown can perform inverse tangent operation on any two components of Bx, By, and Bz. The values ​​thereof also have a one-to-one correspondence with the rotation displacement position and the rotation angle. Accordingly, the rotation displacement position and the rotation angle can also be detected according to the inverse tangent values.

[0130] The beneficial effect of the above technical solution is: when the magnetization method is that the tile-shaped magnet is magnetized in the thickness direction or when the tile-shaped magnet is magnetized in the radial direction, by determining any two components of Bx, By, and Bz, and then performing an inverse tangent operation, the rotational displacement position and the rotation angle of the object to be measured can be accurately calculated.

[0131] Example 6:

[0132] Based on Example 1, this embodiment provides a measurement system for a rotation displacement sensor, further comprising:

[0133] A signal collection module, configured to collect a measurement signal of the rotational displacement sensor on the object to be measured;

[0134] The signal processing module is used to process the measurement signal of the object to be measured and obtain the target measurement signal based on the processing result:

[0135] A signal transmission module, configured to transmit the target measurement signal to a target monitoring terminal based on the cloud, and convert the target measurement signal into target measurement data in the target monitoring terminal;

[0136] a model building module, configured to obtain measurement characteristics of the rotational displacement sensor and build a measurement parameter model of the rotational displacement sensor according to the measurement characteristics of the rotational displacement sensor;

[0137] The module for obtaining the measurement results of the object to be measured is used to:

[0138] Inputting the target measurement data into the measurement parameter model for analysis, and outputting a first rotational displacement position and a first rotation angle of the object to be measured based on the analysis result;

[0139] Calculating the target measurement data to determine a second rotational displacement position and a second rotation angle of the object to be measured;

[0140] Comparing the first rotational displacement position with the second rotational displacement position to obtain a first target difference, and at the same time, comparing the first rotation angle with the second rotation angle to obtain a second target difference;

[0141] An evaluation module is configured to generate an accuracy evaluation result of the rotation displacement sensor according to the first target difference and the second target difference.

[0142] In this embodiment, the measurement signal may be a detection signal generated by the rotation displacement sensor detecting the object to be measured.

[0143] In this embodiment, the target measurement signal may be a measurement signal obtained by performing denoising processing on the measurement signal of the object to be measured.

[0144] In this embodiment, the measurement feature may be a feature determined by the type of measurement data of the rotational displacement sensor, wherein the type of measurement data is determined according to the measurement type. For example, the rotational displacement sensor measures the rotational displacement position and rotation angle of the object to be measured.

[0145] In this embodiment, the measurement parameter model can be constructed based on the measurement characteristics of the rotational displacement sensor to accurately obtain the first rotational displacement position and the first rotation angle of the object to be measured (and the first rotational displacement position and the first rotation angle of the object to be measured determined by the measurement parameter model can be used as a benchmark reference value, thereby achieving the accuracy measurement of the second rotational displacement position and the second rotation angle calculated from the target measurement data).

[0146] In this embodiment, the second rotation displacement position and the second rotation angle may be obtained by calculating the target measurement data.

[0147] The beneficial effects of the above technical solution are: by constructing a measurement parameter model of the rotational displacement sensor, it is helpful to accurately obtain the first rotational displacement position and the first rotation angle of the object to be measured, and by calculating the target measurement data, the second rotational displacement position and the second rotation angle are determined, and then based on the first rotational displacement position and the first rotation angle, the second rotational displacement position and the second rotation angle are accurately measured and evaluated, so that the accuracy of the calculation can be measured, which greatly ensures the monitoring efficiency of the measurement calculation.

[0148] Example 7:

[0149] Based on Example 6, this embodiment provides a measurement system for a rotation displacement sensor, wherein the evaluation module includes:

[0150] a first level confirmation unit, configured to determine that the accuracy evaluation result of the rotation displacement sensor is at a first level when the first target difference is within a first preset target interval and the second target difference is within a second preset target interval;

[0151] a second level confirmation unit, configured to determine that the accuracy evaluation result of the rotational displacement sensor is a second level when the first target difference is within the first preset target interval and the second target difference is not within the second preset target interval, or when the first target difference is not within the first preset target interval and the second target difference is not within the second target interval;

[0152] The third level confirmation unit is configured to determine that the accuracy evaluation result of the rotation displacement sensor is at the third level when the first target difference is not within a first preset target interval and the second target difference is not within a second preset target interval.

[0153] In this embodiment, the first preset target interval may be set in advance and used to measure whether the first target difference (ie, the difference between the first rotational displacement position and the second rotational displacement position) is within a specified range.

[0154] In this embodiment, the second preset target interval may be set in advance and used to measure whether the second target difference (ie, the difference between the first rotation angle and the second rotation angle) is within a specified range.

[0155] In this embodiment, the first level, the second level, and the third level are all accuracy evaluation results of the rotational displacement sensor determined after the accuracy evaluation is performed, wherein the accuracy evaluation results of the rotational displacement sensor are the first level > the second level > the third level, and when the accuracy evaluation result is the second level or the third level, an alarm operation is performed, and the alarm operation can be one or more of sound, light, and vibration.

[0156] The beneficial effect of the above technical solution is that by classifying the accuracy levels of the rotational displacement sensor, it is helpful to accurately measure the working quality of the rotational displacement sensor, thereby helping the user to timely understand the operating status of the rotational displacement sensor.

[0157] Example 8:

[0158] Based on Example 6, this embodiment provides a measurement system for a rotation displacement sensor, wherein the signal processing module includes:

[0159] a signal reading unit, configured to read the measurement signal, determine a signal characterization parameter of the measurement signal, and determine a first signal band of the measurement signal based on the signal characterization parameter;

[0160] a signal analysis unit, configured to compare the measurement signal with the first signal band to determine a second signal band of the measurement signal;

[0161] Signal filtering unit for:

[0162] reading a band characteristic of the second signal band, and determining a noise type of the second signal based on the band characteristic of the second signal band, and simultaneously obtaining a signal boundary of the first signal band;

[0163] using the signal boundary as a filtering boundary for the measurement signal, and determining a filtering template for filtering the measurement signal based on the noise type;

[0164] performing a first filtering on the second signal band in the measurement signal based on the filtering boundary, and performing a second filtering on the second signal band in the measurement signal based on the filtering template after the first filtering;

[0165] The target measurement signal is obtained based on the first filtering and the second filtering.

[0166] In this embodiment, the signal characterization parameters may be parameters such as the signal frequency, signal amplitude, and signal strength of the measurement signal.

[0167] In this embodiment, the first signal band may be a main signal band of the measurement signal, which is used to represent the main signal output of the rotation displacement sensor when measuring the object to be measured.

[0168] In this embodiment, the second signal band may be a noise signal in the measurement signal.

[0169] In this embodiment, the signal boundary may be a signal edge of the first signal band (ie, the main signal band).

[0170] In this embodiment, the noise type may be a type that characterizes the second signal band and is determined based on signal characteristics (such as the frequency and amplitude of the signal) of the second signal band (ie, the noise signal).

[0171] In this embodiment, the first filtering may be filtering the second signal band in the measurement signal based on the filtering boundary.

[0172] In this embodiment, the second filtering may be filtering the second signal band in the measurement signal based on the filtering template.

[0173] In this embodiment, the filter template may be a filter template determined according to the noise type and used to filter the second signal band.

[0174] The beneficial effect of the above technical solution is: the second signal band is filtered through the first filtering, and at the same time, the remaining second signal band is filtered out according to the second filtering, so as to achieve accurate and efficient filtering of the noise signal in the measurement signal, thereby improving the accuracy of the analysis of the measurement signal.

[0175] Example 9:

[0176] Based on Example 1, the construction module further includes:

[0177] The sensitivity detection unit is used to perform a preliminary detection of the working process of the rotational displacement sensor after the rotational displacement sensor is constructed, calculate the output voltage of the preliminary detection, calculate the sensitivity of the rotational displacement sensor based on the output voltage, and determine the working performance of the rotational displacement sensor based on the sensitivity, specifically:

[0178] a first calculation unit, configured to obtain an input voltage of the rotation displacement sensor, and calculate an output voltage for pre-detecting a working process of the rotation displacement sensor based on the input voltage;

[0179]

[0180] Among them, UO Represents the output voltage of the pre-detection of the working process of the rotation displacement sensor; U i represents the input voltage for pre-detection of the working process of the rotational displacement sensor; ω1 represents the magnetic permeability of the material of the rotational displacement sensor; k represents the interference factor, and its value range is (0.28, 0.31); ρ1 represents the material density of the rotational displacement sensor; ω0 represents the vacuum magnetic permeability; g represents the acceleration of gravity; s represents the displacement stroke of the rotational displacement sensor; ΔP represents the input voltage difference of the rotational displacement sensor;

[0181] a second calculation unit, configured to calculate the sensitivity of the rotational displacement sensor based on an output voltage obtained by pre-detection of a working process of the rotational displacement sensor;

[0182]

[0183] Wherein, ζ represents the sensitivity of the rotation displacement sensor; τ represents the reaction time of the rotation displacement sensor; λ represents the error factor of the rotation displacement sensor during pre-detection, and its value range is (0.01, 0.03); t represents the reaction delay; T represents the reference sensing time;

[0184] Work performance determination unit, used to:

[0185] Obtaining a theoretical sensitivity of the rotational displacement sensor, and comparing the sensitivity of the rotational displacement sensor with the theoretical sensitivity to determine the working performance of the rotational displacement sensor;

[0186] When the sensitivity of the rotational displacement sensor is equal to or greater than the theoretical sensitivity, it is determined that the working performance of the rotational displacement sensor is good;

[0187] Otherwise, it is determined that the working performance of the rotation displacement sensor is poor;

[0188] The optimization unit is configured to determine a target difference between the sensitivity of the rotational displacement sensor and the theoretical sensitivity, and optimize the rotational displacement sensor based on the target difference.

[0189] In this embodiment, the reference sensing time may be a pre-set time, which is the time generally required for a rotation displacement sensor to measure determined through theoretical practice.

[0190] In this embodiment, the theoretical sensitivity may be set in advance and is used to measure the working performance of the rotation displacement sensor.

[0191] The beneficial effect of the above technical solution is: after the rotational displacement sensor is constructed, the working process of the rotational displacement sensor is pre-detected and the output voltage of the pre-detection is calculated. The sensitivity of the rotational displacement sensor is calculated based on the output voltage, which is conducive to determining the working performance of the rotational displacement sensor based on the sensitivity. This solution greatly improves the inspection efficiency of the rotational displacement sensor, thereby ensuring the detection accuracy and detection efficiency of the rotational displacement sensor.

[0192] Example 10:

[0193] This embodiment provides a measurement method of a rotation displacement sensor, such as Figure 9 As shown, including:

[0194] Step 1: Construct a rotation displacement sensor based on a tile-shaped magnet and according to a preset scheme;

[0195] Step 2: Obtaining the magnetization mode of the constructed rotation displacement sensor;

[0196] Step 3: Measure the rotational displacement position and rotation angle of the object to be measured based on the rotational displacement sensor and the magnetization method.

[0197] The beneficial effect of the above technical solution is that the tile-shaped magnet can ensure that the magnetic induction intensity is sufficiently linear and strong within the rotational displacement range without increasing the volume and material of the magnet, thereby ensuring sufficient accuracy and detectability. Through different magnetization methods, specific analysis of the specific object to be measured can be achieved, and then the rotational displacement position and rotation angle of the object to be measured can be accurately measured.

[0198] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A measurement system for a rotational displacement sensor, characterized in that: include: A construction module, used for constructing a rotation displacement sensor based on a tile-shaped magnet and according to a preset scheme; A magnetization mode selection module, used to obtain the magnetization mode of the rotation displacement sensor after construction; A measuring module, configured to measure the rotational displacement position and rotation angle of the object to be measured based on the rotational displacement sensor and the magnetization mode; A signal collection module, configured to collect a measurement signal of the rotational displacement sensor on the object to be measured; The signal processing module is used to process the measurement signal of the object to be measured and obtain the target measurement signal based on the processing result: A signal transmission module, configured to transmit the target measurement signal to a target monitoring terminal based on the cloud, and convert the target measurement signal into target measurement data in the target monitoring terminal; a model building module, configured to obtain measurement characteristics of the rotational displacement sensor and build a measurement parameter model of the rotational displacement sensor according to the measurement characteristics of the rotational displacement sensor; The module for obtaining the measurement results of the object to be measured is used to: Inputting the target measurement data into the measurement parameter model for analysis, and outputting a first rotational displacement position and a first rotation angle of the object to be measured based on the analysis result; Calculating the target measurement data to determine a second rotational displacement position and a second rotation angle of the object to be measured; Comparing the first rotational displacement position with the second rotational displacement position to obtain a first target difference, and at the same time, comparing the first rotation angle with the second rotation angle to obtain a second target difference; An evaluation module is configured to generate an accuracy evaluation result of the rotation displacement sensor according to the first target difference and the second target difference.

2. The measurement system of a rotation displacement sensor according to claim 1, characterized in that: The construction module comprises: The first construction unit is used for: Acquiring an actual displacement stroke, and determining the arc shape of the tile-shaped magnet and the length of the tile-shaped magnet based on the actual displacement stroke, wherein the length of the tile-shaped magnet is equal to or greater than the actual displacement stroke; generating a first construction scheme based on the arc shape of the tile-shaped magnet and the length of the tile-shaped magnet, and sending the first construction scheme to a first monitoring device, while monitoring the first construction process of the tile-shaped magnet based on the first monitoring device; The second structural unit is used for: Obtaining the sensing position of the tile-shaped magnet and determining the vertical distance between the sensing position and the tile-shaped magnet, and determining the inner diameter, outer diameter, thickness of the tile-shaped magnet and the material of the tile-shaped magnet based on the vertical distance; generating a second construction scheme based on the inner diameter, outer diameter, thickness of the tile-shaped magnet and the material of the tile-shaped magnet, and sending the second construction scheme to a second monitoring device; and monitoring the second construction process of the tile-shaped magnet based on the second monitoring device; a third construction unit, configured to generate a third construction scheme based on the inner wall, the outer wall, and both ends of the arc shape of the tile-shaped magnet, and send the second construction scheme to a third monitoring device, while monitoring the third construction process of the tile-shaped magnet based on the third monitoring device; The integration unit is used to complete the construction of the rotation displacement sensor based on the first construction process, the second construction process and the third construction process.

3. The measurement system of a rotation displacement sensor according to claim 1, characterized in that: In the magnetization mode selection module: The magnetization modes of the rotation displacement sensor include: magnetization of the tile-shaped magnet in the length direction, magnetization of the tile-shaped magnet in the thickness direction, and magnetization of the tile-shaped magnet in the radial direction.

4. The measurement system of a rotation displacement sensor according to claim 1, characterized in that: The measurement module includes: The magnetic induction intensity distribution acquisition unit is used to: Reading the magnetization mode, and determining the magnetic induction intensity distribution of the object to be measured by the rotation displacement sensor in the magnetization mode, The magnetic induction intensity distribution is a three-dimensional distribution, including: Bx distribution, By distribution and Bz distribution; The measuring and calculating unit is used to obtain the distribution intensity value corresponding to the magnetic induction intensity distribution, and calculate the rotation displacement position and rotation angle of the object to be measured based on the distribution intensity value.

5. The measurement system of a rotation displacement sensor according to claim 4, characterized in that: The measurement calculation unit includes: The first computing subunit is configured to: When the magnetization method is that the tile-shaped magnet is magnetized in the length direction, it includes a first measuring end and a second measuring end; determining a rotational displacement position and a rotation angle of the object to be measured based on the first measuring end or the second measuring end; The first measuring end is used to read the Bz distribution intensity value of the object to be measured by the rotation displacement sensor, and determine the rotation displacement position and rotation angle of the object to be measured based on the Hall effect; The second measuring end is used for: Respectively reading the Bx distribution intensity value, the By distribution intensity value, and the Bz distribution intensity value of the object to be measured by the rotation displacement sensor; Randomly select any two of the Bx distribution intensity values, the By distribution intensity value, and the Bz distribution intensity value to perform a first inverse tangent operation, and determine the rotational displacement position and rotation angle of the object to be measured based on the first inverse tangent operation result.

6. The measurement system of a rotation displacement sensor according to claim 4, characterized in that: The measurement calculation unit includes: a distribution intensity value acquisition subunit, configured to obtain the Bx distribution intensity value, the By distribution intensity value, and the Bz distribution intensity value of the object to be measured by the rotational displacement sensor when the magnetization mode is that the tile-shaped magnet is magnetized in the thickness direction or when the tile-shaped magnet is magnetized in the radial direction; An operation subunit is used to randomly select any two distribution intensity values ​​from the Bx distribution intensity value, the By distribution intensity value, and the Bz distribution intensity value to perform a second inverse tangent operation, and determine the rotational displacement position of the object to be measured and the rotation angle of the object to be measured based on a one-to-one correspondence between the second inverse tangent operation result and the rotational displacement position of the object to be measured and the rotation angle of the object to be measured.

7. The measurement system of a rotation displacement sensor according to claim 1, characterized in that: The evaluation module includes: a first level confirmation unit, configured to determine that, when the first target difference is within a first preset target interval and the second target difference is within a second preset target interval, the accuracy evaluation result of the rotation displacement sensor is at a first level; a second level confirmation unit, configured to determine that the accuracy evaluation result of the rotational displacement sensor is a second level when the first target difference is within the first preset target interval and the second target difference is not within the second preset target interval, or when the first target difference is not within the first preset target interval and the second target difference is not within the second target interval; The third level confirmation unit is configured to determine that the accuracy evaluation result of the rotation displacement sensor is at the third level when the first target difference is not within a first preset target interval and the second target difference is not within a second preset target interval.

8. The measurement system of a rotation displacement sensor according to claim 1, characterized in that: The signal processing module includes: a signal reading unit, configured to read the measurement signal, determine a signal characterization parameter of the measurement signal, and determine a first signal band of the measurement signal based on the signal characterization parameter; a signal analysis unit, configured to compare the measurement signal with the first signal band to determine a second signal band of the measurement signal; Signal filtering unit for: reading a band characteristic of the second signal band, and determining a signal boundary and a noise type of the second signal based on the band characteristic of the second signal band; using the signal boundary as a filtering boundary for the measurement signal, and determining a filtering template for filtering the measurement signal based on the noise type; performing a first filtering on the second signal band in the measurement signal based on the filtering boundary, and performing a second filtering on the second signal band in the measurement signal based on the filtering template after the first filtering; The target measurement signal is obtained based on the first filtering and the second filtering.

9. A method for measuring a rotational displacement sensor, characterized in that: include: Step 1: Construct a rotation displacement sensor based on a tile-shaped magnet and according to a preset scheme; Step 2: Obtaining the magnetization mode of the constructed rotation displacement sensor; Step 3: measuring the rotational displacement position and rotation angle of the object to be measured based on the rotational displacement sensor and the magnetization method; Collecting a measurement signal of the rotational displacement sensor on the object to be measured; Processing the measurement signal of the object to be measured, and obtaining a target measurement signal based on the processing result: Transmitting the target measurement signal to a target monitoring terminal based on the cloud, and converting the target measurement signal into target measurement data in the target monitoring terminal; Acquiring measurement characteristics of the rotational displacement sensor, and constructing a measurement parameter model of the rotational displacement sensor according to the measurement characteristics of the rotational displacement sensor; Inputting the target measurement data into the measurement parameter model for analysis, and outputting a first rotational displacement position and a first rotation angle of the object to be measured based on the analysis result; Calculating the target measurement data to determine a second rotational displacement position and a second rotation angle of the object to be measured; Comparing the first rotational displacement position with the second rotational displacement position to obtain a first target difference, and at the same time, comparing the first rotation angle with the second rotation angle to obtain a second target difference; An accuracy evaluation result of the rotation displacement sensor is generated according to the first target difference and the second target difference.

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