Roll system space precision detection method and device based on optical fiber gyroscope

Abstract

The invention provides a roller system space precision detection method and device based on an optical fiber gyroscope. The method comprises the following steps: S1, cleaning dust and rust on the surface of a to-be-detected roller; s2, the gyroscope is placed on the horizontal rigid ground and is started for preheating, so that the operation side of the gyroscope is parallel to the reference roller; s3, enabling the gyroscope device to repeatedly slide along the roller surface within a rated angle range, and executing S4 after a display screen of the gyroscope displays that alignment is completed; s4, measuring direction vectors of intersecting lines of the adjacent planes; s5, performing data credibility evaluation on the direction vector of the intersecting line; if the precision requirement is met, executing S6; and S6, performing right-handed coordinate system-based levelness and parallelism calculation on the direction vector of the intersecting line conforming to the precision. According to the method, the three carried precision gyroscopes can be used for accurately measuring the spatial precision index of the equipment, and a roller system spatial position adjusting scheme is given according to a data processing result, so that the accuracy of the roller system spatial position is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of metallurgical equipment spatial accuracy detection, and in particular to a roller system spatial accuracy detection method and device based on a fiber optic gyroscope. Background Art

[0002] As a contact equipment spatial accuracy detection technology, gyroscope spatial accuracy detection can rely on the built-in fiber optic gyroscope and phase difference measurement element of the gyroscope device to quickly obtain the rotational angular velocity of the gyroscope device along the three axes, and realize the rapid detection of the spatial accuracy of the roller system through geometric calculation, thereby realizing the rapid detection of the spatial accuracy of metallurgical equipment. The core of the gyroscope roller system spatial accuracy detection technology lies in the measurement of the gyroscope rotational angular velocity and the calculation of spatial accuracy indicators. The measured rotational angular velocity can be integrated with the measured time to obtain the rotation angle, and the plane analytical expression can be obtained according to the spatial geometry solution. The direction vector of the intersection of adjacent planes is used to calculate the required spatial accuracy index. At the same time, the angular velocity required for the gyroscope spatial accuracy detection is obtained by coupling the three gyroscopes. The key steps such as the calibration of the initial reference, the measurement of the phase difference in each direction, and the calculation of the angle in each direction are crucial to the accuracy of the final result of the roller system spatial accuracy detection.

[0003] At present, the industry has successively introduced a variety of solutions to the problem of spatial accuracy detection of metallurgical equipment. Patent CN202310203993.1 proposes a method for detecting the spatial position of a rolling mill, which obtains real-time initial position data and real-time position data based on certain media and electronic equipment, and detects the accuracy of the spatial position of the rolling mill. Patent CN202111441536.3 proposes a device and method for measuring the axial movement of a universal roller system, which uses two displacement sensors placed at a certain position to measure the movement of the universal roller system. Although the above patents propose certain detection methods, they cannot form high-precision measurement results with the devices they rely on, and the operation is complicated.

[0004] Patent CN202310759243.2 proposes a method and device for detecting the three-dimensional spatial accuracy of large support rollers. A high-precision laser tracker is used to establish a three-dimensional spatial coordinate system. The roller body model is obtained by fitting the coordinate sampling points of the roller body, liner, and transfer station to detect the spatial accuracy of the support roller. Patent CN 202011081867.6 proposes a new method for detecting the spatial accuracy of rolling mill equipment. Based on the laser tracker coordinate system, the coordinates of each sampling point are fitted to obtain the roller axis, and the inclination direction of the roller axis is obtained based on this. Patent CN 202211228261.X proposes a device and method for detecting the spatial positioning accuracy of a five-axis machine tool. A measuring sensor head is composed of a laser interferometer, an optoelectronic position sensitive sensor, and a spectroscope. The machine tool drives the measuring sensor head to move along a preset measurement trajectory in the workspace. The spatial positioning error of the machine tool is calculated by analyzing the data obtained by switching different positions. Patent CN201710725165.9 proposes an online detection method for the spatial position dimensional accuracy of a cold rolling mill window. It uses a laser detection device to detect and establish the workstation, the horizontal plane, the rolling production center line, and the origin of the mill window coordinate system, and analyzes the spatial position dimensional accuracy of the mill window. Although the above patent is based on a high-precision detection device, the operation method is complex and time-consuming. The core of the spatial accuracy detection of metallurgical equipment lies in rapid and high-precision detection, but the current inspection methods all have varying degrees of accuracy defects or detection efficiency problems. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a roller system spatial accuracy detection method and device based on fiber optic gyroscope. The method of the present invention can use the three precision gyroscopes carried to accurately measure the equipment spatial accuracy index, and give a roller system spatial position adjustment plan based on the data processing results, thereby ensuring the accuracy of the roller system spatial position. This solves the problem that the existing inspection methods all have different degrees of accuracy defects or detection efficiency problems.

[0006] The technical means adopted by the present invention are as follows:

[0007] A method for detecting the spatial accuracy of a roller system based on a fiber optic gyroscope comprises the following steps:

[0008] S1. Stop the rolling mill where the roll to be tested is located, separate the roll to be tested, and clean the dust and rust on the surface of the roll to be tested;

[0009] S2. Place the gyroscope on a horizontal rigid ground and start it for preheating, so that the operating side of the gyroscope is parallel to the reference roller, and input the measurement indicators of this time into the gyroscope as horizontality and parallelism;

[0010] S3, establish a right-hand coordinate system, in which the y-axis coincides with the central axis of the reference roller, and the positive semi-axis is from left to right from the side where the operator faces the reference roller; the z-axis in the right-hand coordinate system is perpendicular to the horizontal rigid ground, and the positive direction is vertically upward; the x-axis is perpendicular to the yoz plane, and the positive direction is the back direction of the operator during operation; the gyroscope device is horizontally pressed against the surface of the reference roller, and the gyroscope device is repeatedly slid along the roller surface within the rated angle range, and when the gyroscope display screen shows that the alignment is completed, execute S4;

[0011] S4. Use the gyroscope device to set the model of the roller to be measured and start measuring; place the gyroscope device horizontally and tightly against the surface of the roller to be measured, set the plane measured for the first time as the initial plane, and then slide repeatedly along the rated angle range on one side of the roller to be measured to measure the direction vector of the intersection line;

[0012] S5, evaluate the data credibility of the direction vector of the intersection line; if it does not meet the accuracy requirement, remove the intersection line; if it meets the accuracy requirement, execute S6;

[0013] S6. Calculate the horizontality and parallelism of the direction vector of the intersection line that meets the accuracy based on the right-hand coordinate system.

[0014] Furthermore, the rated angle range is 20 degrees to 90 degrees.

[0015] Furthermore, S4 specifically includes the following steps:

[0016] S41. The plane measured for the first time is preset as the initial plane. The initial plane expression is:

[0017] A0x+B0y+C0z+D=0;

[0018] Where: A0, B0, C0, D are constants, and A0, B0, C0 are not all 0;

[0019] S42, in dt n During this time, the angular velocity ω of the gyroscope in three directions along the right-hand coordinate system is measured. n1 ,ω n2 ,ω n3 ,in

[0020] Integrate the angular velocity with time to get the angular changes θ in three directions n1 ,θ n2 ,θ n3 , where θ nm =∫ω nm dt n ,(m=1,2,3);

[0021] It is stipulated that when looking at the plane perpendicular to the positive semi-axis of the coordinate axis, counterclockwise rotation is positive and clockwise rotation is negative;

[0022] Where: c is the speed of light; λ is the wavelength; is the phase difference; R is the radius of the fiber ring; l is the circumference of the fiber ring; N is the number of turns of the fiber ring;

[0023] S43, the plane rotates along the y-axis θ n2 After that, the plane analytical expression is A n2 x+B n-1 y+C n2 z+D=0, where:

[0024]

[0025] S44, rotate θ along the x-axis n1 After that, the plane analytical expression is A n2 x+B n1 y+C n1 z+D=0, where:

[0026]

[0027] S45, rotate θ along the z axis n3 After that, the plane analytical expression is A n3 x+B n3 y+C n1 z+D=0, where:

[0028]

[0029] S46. In summary, let A n =A n3 ,B n =B n3 ,C n =C n1 ;

[0030] S47, using the n-1th surface and rotating dt along three axes n The direction vector of the intersection line of the nth plane obtained is used as the basis for calculation, and the direction vector of the intersection line is calculated to be:

[0031]

[0032] S48. Repeat S42 to S47 to measure the direction vector of the subsequent intersection line.

[0033] Furthermore, S5 specifically includes the following steps:

[0034] S51. Assuming that the measured roll length is L, calculate the angle b0 between the initial plane and the central axis of the reference roll. The formula is as follows:

[0035]

[0036] Calculate the angle b between the intersection of adjacent planes and the reference roller axis n ,

[0037]

[0038] S52, calculate the angle α between the intersection line to be evaluated and the previous intersection line n ;

[0039]

[0040] S53, calculation and like and The intersection line to be evaluated is considered credible.

[0041] Furthermore, S6 specifically includes the following steps:

[0042] S61. Parallelism is defined as the angle between the projection of the intersection vector on the xoy plane and the y axis, which is then converted into a deviation per meter, called the parallelism of the roller system relative to the reference zero position, denoted as Hor, with the counterclockwise direction being positive and the clockwise direction being negative, in units of mm / m, and the calculation formula being:

[0043]

[0044] S62. Define the horizontality as the angle between the projection of the intersection line on the zoy plane and the y-axis, and then convert it into a deviation per meter, called the horizontality of the axis system relative to the reference zero position, recorded as Ver, with the counterclockwise direction as positive and the clockwise direction as negative, in units of mm / m, and the calculation formula is:

[0045]

[0046] Furthermore, the reference roller is buried in the ground to ensure the stability of the reference roller; the surface of the reference roller is higher than the ground and parallel to the production line where the roller system to be measured is located, and can be used for reference leveling of the gyroscope device.

[0047] The present invention also provides a device for detecting the spatial accuracy of a roller system based on an optical fiber gyroscope, which is used to implement any one of the above-mentioned methods for detecting the spatial accuracy of a roller system based on an optical fiber gyroscope, comprising: a gyroscope and an integrated electronic component of a gyroscope device connected to each other and arranged in a housing of the gyroscope device, a gyroscope device display screen being arranged on the upper part of the housing of the gyroscope device, and a gyroscope device handrail being arranged on the side of the housing of the gyroscope device;

[0048] The gyroscope device integrated electronic components include a display module, a spatial accuracy index calculation module and an initial data detection calculation module; the initial data detection calculation module includes a phase difference detector, an intersection direction vector calculator and a credibility evaluator.

[0049] The present invention also provides a storage medium, which includes a stored program, wherein when the program is run, any of the above-mentioned roller system spatial accuracy detection methods based on fiber optic gyroscope is executed.

[0050] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes any one of the above-mentioned roller system spatial accuracy detection methods based on the fiber optic gyroscope through the computer program.

[0051] Compared with the prior art, the present invention has the following advantages:

[0052] In terms of data detection method, the present invention is based on a high-precision fiber optic gyroscope and adopts contact detection, which can quickly and accurately obtain the spatial accuracy data of the roller surface, and through internal electronic devices, quickly calculate the direction vector of the surface intersection line required for subsequent accuracy calculation, thereby solving the problem of low measurement efficiency of traditional detection methods and enabling the spatial accuracy detection of the roller to be carried out quickly.

[0053] In terms of data processing, the present invention utilizes the direction vector of the surface intersection line obtained through detection, and through credibility evaluation and direction vector space accuracy conversion calculation formula, can accurately obtain the roller surface spatial accuracy index, thereby solving the problem of low detection accuracy of traditional detection means, and enabling the roller space accuracy detection to provide a high-credibility adjustment plan. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0055] Figure 1 It is a schematic diagram of the process of the present invention.

[0056] Figure 2 This is a flow chart of initial data measurement of the present invention.

[0057] Figure 3 The figure is a flow chart of data credibility assessment of the present invention.

[0058] Figure 4 This is a flow chart of post-processing of measurement data of the present invention.

[0059] Figure 5 This is an overall external view of the gyroscope device of the present invention.

[0060] Figure 6 This is a diagram showing the internal structure of the gyroscope device of the present invention.

[0061] Figure 7 This is a diagram showing the structure of the electronic components of the gyroscope device of the present invention.

[0062] In the figure: 1. Gyroscopic device armrest; 2. Gyroscopic device display screen; 3. Gyroscopic device housing; 4. Gyro; 5. Gyroscopic device integrated electronic components. DETAILED DESCRIPTION

[0063] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0064] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0065] like Figure 1 As shown, the present invention provides a roller system spatial accuracy detection method based on fiber optic gyroscope. The gyroscope device used in the method needs to be used in conjunction with a pre-embedded reference roller to improve measurement accuracy and efficiency. The method comprises the following steps:

[0066] S1. Stop the rolling mill where the roll to be tested is located, separate the roll to be tested, and clean the surface with a cleaning shovel and a cleaning brush to ensure that there is no obvious dust or rust on the surface to be tested.

[0067] S2. Turn on the gyroscope and preheat it. Place the gyroscope on a horizontal rigid surface with the operating side parallel to the "reference roller". Enter the measurement indicators for this measurement as horizontality and parallelism.

[0068] S3. Establish a right-hand coordinate system. The y-axis in the right-hand coordinate system coincides with the central axis of the reference roller. The positive semi-axis is from left to right from the side where the operator faces the reference roller. The z-axis in the right-hand coordinate system is perpendicular to the horizontal rigid ground, and the positive direction is vertically upward. The x-axis is perpendicular to the yoz plane, and the positive direction is the back direction of the operator during operation. Place the gyroscope device horizontally and tightly against the surface of the reference roller, and slide the gyroscope device repeatedly along the roller surface within the rated angle range. When the gyroscope display screen shows that the alignment is complete, execute S4.

[0069] S4. The operator holds the gyroscope device, sets the model of the roller to be measured, clicks to start measurement, and then holds the gyroscope device horizontally against the surface of the roller to be measured, sets the plane measured for the first time as the initial plane, and then repeatedly slides along the range of 20 to 90 degrees on one side of the roller to be measured to measure data once.

[0070] S41. Preset the plane measured for the first time as the initial plane, and its expression is A0x+B0y+C0z+D=0.

[0071] Where: A0, B0, C0, D are constants, and A0, B0, C0 are not all 0;

[0072] S42, in dt n Within this time, the angular velocity ω of the gyroscope in three directions is measured n1 ,ω n2 ,ω n3 ,in:

[0073]

[0074] The angle changes in three directions are obtained by integrating with time θ n1 ,θ n2 ,θ n3 ,in:

[0075] θ nm =∫ω nm dt n ,(m=1,2,3).

[0076] It is stipulated that when looking at the plane perpendicular to the positive semi-axis of the coordinate axis, counterclockwise rotation is positive and clockwise rotation is negative.

[0077] Where c is the speed of light, (m / s); λ is the wavelength, (m); is the phase difference, (rad); R is the radius of the fiber ring, (m); l is the circumference of the fiber ring, (m); N is the number of turns of the fiber ring;

[0078] S43, the plane rotates along the y-axis θ n2 After that, the plane analytical expression is An2 x+B n-1 y+C n2 z+D=0; where:

[0079]

[0080]

[0081] S44, rotate θ along the x-axis n1 After that, the plane analytical expression is A n2 x+B n1 y+C n1 z+D=0; where:

[0082]

[0083] S45, rotate θ along the z axis n3 After that, the plane analytical expression is A n3 x+B n3 y+C n1 z+D=0;

[0084]

[0085] S46. In summary, let A n =A n3 ,B n =B n3 ,C n =C n1 .

[0086] S47, using the n-1th surface and rotating dt along three axes n The direction vector of the intersection line of the nth plane obtained is used as the basis for calculation, and the direction vector of the intersection line is calculated to be:

[0087] For convenience, we define L n =B n-1 C n -B n C n-1 ;M n =A n C n-1 -A n-1 C n ; N n =A n-1 B n -A n B n-1 Therefore

[0088] S48. Repeat S42-S47 to measure the direction vector of the subsequent intersection line.

[0089] S5. Data credibility assessment.

[0090] S51, assuming that the length of the measured roller system is L, first calculate the angle b0 between the initial plane and the central axis of the reference roller,

[0091]

[0092] Then measure and calculate the angle b between the intersection of the adjacent planes and the axis of the reference roller n ,

[0093]

[0094] S52, calculate the angle α between the line and the nth intersection line n .

[0095]

[0096] S53, calculation and like and The intersection line to be evaluated is considered credible.

[0097] S6. Post-processing of the measurement data, based on the coordinate system of the reference roller as the calculation standard.

[0098] S61. Parallelism is defined as the angle between the projection of the intersection vector on the xoy plane and the y axis, which is then converted into a deviation per meter, called the parallelism of the roller system relative to the reference zero position, denoted as Hor, with the counterclockwise direction being positive and the clockwise direction being negative, in units of mm / m, and the calculation formula being:

[0099]

[0100] S62. Define the horizontality as the angle between the projection of the intersection line on the zoy plane and the y axis, and then convert it into a deviation per meter, called the horizontality of the axis system relative to the reference zero position, recorded as Ver, with the counterclockwise direction as positive and the clockwise direction as negative, in units of mm / m. The calculation formula is:

[0101]

[0102] S7. Implement equipment spatial precision control according to various spatial precision indicators. According to the parallelism Hor, adjust the roller system to move -Hor·L along the x-axis direction; according to the horizontality Ver, adjust the roller system to move -Ver·L along the z-axis direction.

[0103] The present invention also provides a device for detecting the spatial accuracy of a roller system based on a fiber optic gyroscope, which is used to implement a method for detecting the spatial accuracy of a roller system based on a fiber optic gyroscope. Figure 5-7As shown, it includes: a gyroscope 4 and a gyroscope integrated electronic component 5 which are connected and arranged in a gyroscope housing 3, a gyroscope display screen 2 is arranged on the upper part of the gyroscope housing 3, and a gyroscope handrail 1 is arranged on the side of the gyroscope housing 3;

[0104] The gyroscope device integrated electronic component 5 includes a display module, a spatial accuracy index calculation module and an initial data detection calculation module; the initial data detection calculation module includes a phase difference detector, an intersection direction vector calculator and a credibility evaluator.

[0105] The present invention also provides a storage medium, which includes a stored program, wherein when the program is run, a roller system spatial accuracy detection method based on a fiber optic gyroscope is executed.

[0106] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes a roller system spatial accuracy detection method based on a fiber optic gyroscope through the computer program.

[0107] Example

[0108] A method for detecting spatial accuracy of a device based on a fiber optic gyroscope, the steps are as follows:

[0109] S1. Stop the rolling mill where the roll to be tested is located, separate the roll to be tested, and clean the surface with a cleaning shovel and a cleaning brush to ensure that there is no dust or rust on the surface to be tested.

[0110] S2. Turn on the gyroscope and preheat it. Place the gyroscope on a horizontal rigid surface with the operating side parallel to the "reference roller". Enter the measurement indicators for this measurement as horizontality and parallelism.

[0111] S3. Define a right-hand coordinate system, where the y-axis coincides with the length direction of the reference roller, and the z-axis is perpendicular to the horizontal rigid ground; the operator places the gyroscope device horizontally against the surface of the reference roller, and repeatedly slides along the roller surface between 20 and 90 degrees. When the gyroscope display screen shows that the alignment is complete, this step can be stopped. The operator must always operate on one side of the reference roller.

[0112] S4. The operator holds the gyroscope device, sets the model of the roller to be measured, clicks to start measurement, and then holds the gyroscope device horizontally against the surface of the roller to be measured, sets the plane measured for the first time as the initial plane, and then repeatedly slides along the range of 20 to 90 degrees on one side of the roller to be measured to measure data once.

[0113] S41, presetting the plane measured for the first time as the initial plane, and measuring its expression as x+y-10085z+1=0;

[0114] S42. Within 0.001s, measure the angular velocity ω of the gyroscope in three directions 11 ,ω 12 ,ω 13 ,in:

[0115]

[0116] c=299792458m / s,l=6×10 -7 m, the measured phase difference in the x direction is The phase difference in the y direction is The phase difference in the z direction is The radius of the fiber ring is 90 mm, the circumference of the fiber ring is 180π mm, the number of turns of the fiber ring is 3500, and the angular velocity in each direction is measured as:

[0117]

[0118] The angle changes in three directions are obtained by integrating with time θ 11 ,θ 12 ,θ 13 ,θ 11 =9.96439×10 -7 °; θ 12 =0.020250°;θ 13 =9.24117×10 -7 °.

[0119] S43, taking the first plane after the initial plane as an example, the initial plane rotates along the y-axis by θ n2 After that, the plane analytical expression is A 12 x+B0y+C 12 z+D=0; where:

[0120]

[0121]

[0122] S44, rotate θ along the x-axis 11 After that, the plane analytical expression is A 12 x+B 11 y+C 11 z+D=0; where:

[0123]

[0124] S45, rotate θ along the z axis 13 After that, the plane analytical expression is A 13 x+B 13 y+C 11 z+D=0; where:

[0125]

[0126] S46. In summary, let A1 = A 13 ,B1=B 13 ,C1=C 11 So we have: A1=A 13 =-2.56437;

[0127] B1=B 13 =1.00018; C1 = C 11 =-10,084.99972.

[0128] S47, using the direction vector of the intersection line between the initial plane and the first plane obtained after rotating along the three axes for 0.001s as the basis for calculation, the direction vector of the intersection line is calculated to be

[0129] S48, repeat S42-S47 to measure the direction vector of the second intersection line:

[0130]

[0131] S5. Data credibility assessment.

[0132] S51, the measured roller length is 2m. First calculate the angle between the initial plane and the central axis of the reference roller

[0133]

[0134] The calculated angle between the intersection of adjacent planes and the reference roller axis is:

[0135]

[0136] S52, calculating the angle α1 between the two intersection lines,

[0137]

[0138] S53, Therefore, it is believed that the measurement data is credible.

[0139] S6. Post-processing of the measurement data, based on the coordinate system of the reference roller as the calculation standard.

[0140] S61. Parallelism is defined as the angle between the projection of the intersection vector on the xoy plane and the y axis, which is then converted into a deviation per meter, called the parallelism of the axis system relative to the reference zero position, denoted as Hor, with the counterclockwise direction being positive and the clockwise direction being negative, in units of mm / m, and the calculation formula being:

[0141]

[0142] Therefore, the measurement results are:

[0143]

[0144] S62. Define the horizontality as the angle between the projection of the intersection line on the zoy plane and the y axis, and then convert it into a deviation per meter, called the horizontality of the axis system relative to the reference zero position, recorded as Ver, with the counterclockwise direction as positive and the clockwise direction as negative, in units of mm / m. The calculation formula is:

[0145]

[0146] Therefore, the measurement results are:

[0147]

[0148] S7. According to various spatial accuracy indicators, implement equipment spatial accuracy control. According to the average parallelism Hor, adjust the end of the roller system to move along the xoy plane - Hor·L = 0.04530mm; according to the average horizontality Ver, adjust the roller system to move along the zoy plane - Ver·L = 0.19835mm.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for detecting the spatial accuracy of a roller system based on a fiber optic gyroscope, characterized in that: The steps include: S1. Stop the rolling mill where the roll to be tested is located, separate the roll to be tested, and clean the dust and rust on the surface of the roll to be tested; S2. Place the gyroscope on a horizontal rigid ground and start it for preheating, so that the operating side of the gyroscope is parallel to the reference roller, and input the measurement indicators of this time into the gyroscope as horizontality and parallelism; S3. Establish a right-hand coordinate system. The y-axis in the right-hand coordinate system coincides with the central axis of the reference roller. From the side where the operator faces the reference roller, the positive semi-axis is from left to right. The z-axis in the right-hand coordinate system is the vertical direction of the horizontal rigid ground, and the vertical upward direction is the positive direction. The x-axis is perpendicular to the yoz plane, and the positive direction is the back direction of the operator when operating. The gyroscope device is placed horizontally and tightly against the surface of the reference roller, and the gyroscope device is repeatedly slid along the roller surface within the rated angle range. When the gyroscope display screen shows that the alignment is completed, S4 is executed; S4. Use the gyroscope device to set the model of the roller to be measured and start measuring; place the gyroscope device horizontally and tightly against the surface of the roller to be measured, set the plane measured for the first time as the initial plane, and then slide repeatedly along the rated angle range on one side of the roller to be measured to measure the direction vector of the intersection line of each adjacent plane; S5, evaluate the data credibility of the direction vector of the intersection line; if it does not meet the accuracy requirement, remove the intersection line; if it meets the accuracy requirement, execute S6; S6. Calculate the horizontality and parallelism of the direction vector of the intersection line that meets the accuracy based on the right-hand coordinate system.

2. The method for detecting the spatial accuracy of a roller system based on an optical fiber gyroscope according to claim 1, characterized in that: The rated angle ranges from 20 degrees to 90 degrees.

3. The method for detecting the spatial accuracy of a roller system based on an optical fiber gyroscope according to claim 1, characterized in that: S4 specifically includes the following steps: S41. The plane measured for the first time is preset as the initial plane. The initial plane expression is: A0x+B0y+C0z+D=0; Where: A0, B0, C0, D are constants, and A0, B0, C0 are not all 0; S42, in dt n During this time, the angular velocity ω of the gyroscope in three directions along the right-hand coordinate system is measured. n1 ,ω n2 ,ω n3 ,in Integrate the angular velocity with time to get the angular changes θ in three directions n1 ,θ n2 ,θ n3 , where θ nm =∫ω nm dt n ,(m=1,2,3); It is stipulated that when looking at the plane perpendicular to the positive semi-axis of the coordinate axis, counterclockwise rotation is positive and clockwise rotation is negative; Where: c is the speed of light; λ is the wavelength; is the phase difference; R is the radius of the fiber ring; l is the circumference of the fiber ring; N is the number of turns of the fiber ring; S43, the plane rotates along the y-axis θ n2 After that, the plane analytical expression is A n2 x+B n-1 y+C n2 z+D=0, where: S44, rotate θ along the x-axis n1 After that, the plane analytical expression is A n2 x+B n1 y+C n1 z+D=0, where: S45, rotate θ along the z axis n3 After that, the plane analytical expression is A n3 x+B n3 y+C n1 z+D=0, where: S46. In summary, let A n =A n3 ,B n =B n3 ,C n =C n1 ; S47, using the n-1th surface and rotating dt along three axes n The direction vector of the intersection line of the nth plane obtained is used as the basis for calculation, and the direction vector of the intersection line is calculated to be: L n = B n-1 C n - B n C n-1 ; M n = A n C n-1 - A n-1 C n ; N n = A n-1 B n - A n B n-1 ; Therefore S48. Repeat S42 to S47 to measure the direction vector of the subsequent intersection line.

4. The method for detecting the spatial accuracy of a roller system based on an optical fiber gyroscope according to claim 1, characterized in that: S5 specifically includes the following steps: S51. Assuming that the measured roll length is L, calculate the angle b0 between the initial plane and the central axis of the reference roll. The formula is as follows: Calculate the angle b between the intersection of adjacent planes and the reference roller axis n , S52, calculate the angle α between the intersection line to be evaluated and the previous intersection line n ; S53, calculation and like and The intersection line to be evaluated is considered credible.

5. The method for detecting the spatial accuracy of a roller system based on an optical fiber gyroscope according to claim 1, characterized in that: S6 specifically includes the following steps: S61. Parallelism is defined as the angle between the projection of the intersection vector on the xoy plane and the y axis, which is then converted into a deviation per meter, called the parallelism of the roller system relative to the reference zero position, denoted as Hor, with the counterclockwise direction being positive and the clockwise direction being negative, in units of mm / m, and the calculation formula being: S62. Define the horizontality as the angle between the projection of the intersection line on the zoy plane and the y-axis, and then convert it into a deviation per meter, called the horizontality of the axis system relative to the reference zero position, recorded as Ver, with the counterclockwise direction as positive and the clockwise direction as negative, in units of mm / m, and the calculation formula is:

6. The method for detecting the spatial accuracy of a roller system based on an optical fiber gyroscope according to claim 1, characterized in that: The reference roller is buried in the ground to ensure the stability of the reference roller; the surface of the reference roller is higher than the ground and parallel to the production line where the roller system to be measured is located, and can be used for reference leveling of the gyroscope device.

7. A device for detecting the spatial accuracy of a roller system based on a fiber optic gyroscope, used to implement the method for detecting the spatial accuracy of a roller system based on a fiber optic gyroscope as claimed in any one of claims 1 to 6, characterized in that: include: A gyroscope (4) and a gyroscope device integrated electronic component (5) are connected and arranged in a gyroscope device housing (3); a gyroscope device display screen (2) is arranged on the upper part of the gyroscope device housing (3); and a gyroscope device handrail (1) is arranged on the side of the gyroscope device housing (3); The gyroscope device integrated electronic component (5) comprises a display module, a spatial accuracy index calculation module and an initial data detection calculation module; the initial data detection calculation module comprises a phase difference detector, an intersection direction vector calculator and a credibility evaluator.

8. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is run, the roller system spatial accuracy detection method based on the fiber optic gyroscope as described in any one of claims 1 to 6 is executed.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: The processor executes the roller system spatial accuracy detection method based on the fiber optic gyroscope as described in any one of claims 1 to 6 through the operation of the computer program.

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