Measurement method and measurement system

Abstract

The invention discloses a measuring method and a measuring system, the measuring method is used for measuring the thickness of a sheet, and the measuring method comprises the following steps: controlling a thickness gauge to perform accelerated motion from an original point position to a calibration sheet; after the speed of the thickness gauge reaches the preset speed, the thickness gauge is controlled to move at the preset speed at a constant speed, and the preset speed is larger than 2 mm / s; and in the process that the thickness gauge moves at the constant speed at the preset speed, the thickness gauge passes through the calibration sheet and the sheet in sequence, so that the thickness gauge is calibrated, and the thickness of the sheet is measured after the thickness gauge is calibrated. According to the measuring method, the thickness gauge is controlled to move in an accelerated mode at first and then move at a constant speed after reaching the speed larger than 2 mm / s so that calibration and thickness measurement can be conducted on the sheet in sequence, the thickness gauge can conduct calibration and thickness measurement under the condition that the speed is high and constant, the thickness measuring efficiency of the sheet can be improved, and the measuring accuracy of the thickness of the sheet can be improved. And the measurement is relatively accurate.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automotive industry. In this case, electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development. Battery cells generally include pole pieces. During the production process of pole pieces, the thickness of the pole pieces needs to be tested. However, the efficiency of measuring the thickness of pole pieces in related technologies needs to be further improved. Summary of the invention

[0003] In view of the above problems, the present invention provides a measurement method and a measurement system, which can improve the efficiency of measuring the thickness of the electrode to a certain extent.

[0004] The present invention provides a measuring method for measuring the thickness of a sheet material, the measuring method comprising: Control the thickness gauge to accelerate from the origin to the calibration piece; After the speed of the thickness gauge reaches a predetermined speed, controlling the thickness gauge to move at a uniform speed at the predetermined speed, wherein the predetermined speed is greater than 2 mm / s; When the thickness gauge moves at a uniform speed at the predetermined speed, the thickness gauge passes through the calibration sheet and the sheet material in sequence, so as to calibrate the thickness gauge and measure the thickness of the sheet material after the thickness gauge is calibrated.

[0005] In the measurement method of the embodiment of the present application, the thickness gauge is controlled to accelerate first, and then move at a constant speed after the thickness gauge reaches a speed greater than 2 mm / s to successively calibrate and measure the thickness of the sheet, so that the thickness gauge can be calibrated and measured at a faster and uniform speed, which is beneficial to improving the efficiency of measuring the thickness of the sheet and making the measurement more accurate.

[0006] In some embodiments, the measuring method further comprises: The thickness gauge is controlled to accelerate from the origin position to a speed before the calibration piece to reach the predetermined speed.

[0007] In the above embodiment, the thickness gauge can start calibration after moving to the calibration piece, so that the size of the calibration piece can be fully utilized, thereby reducing the thickness measurement cost of the sheet.

[0008] In some embodiments, the measuring method comprises: Setting the origin position and the acceleration of the thickness gauge; The thickness gauge is controlled to accelerate from the origin position at the acceleration, so that the speed of the thickness gauge before it moves to the calibration piece reaches the predetermined speed.

[0009] In the above embodiment, the thickness gauge is controlled to accelerate from the origin position at a set acceleration, which can increase the probability that the speed of the thickness gauge reaches the predetermined speed before moving to the calibration piece.

[0010] In some embodiments, the measuring method comprises: After the thickness gauge measures the thickness of the sheet material, the thickness gauge is controlled to keep moving at the predetermined speed so that the thickness gauge passes through a calibration sheet to calibrate the thickness gauge.

[0011] In the above implementation, after the thickness gauge is calibrated by the calibration sheet, the thickness measurement result of the thickness gauge is more accurate.

[0012] In some embodiments, the measuring method comprises: After the thickness gauge passes through the calibration sheet at the predetermined speed, the thickness gauge is controlled to keep moving at the predetermined speed so that the thickness gauge passes through the calibration sheet to calibrate the thickness gauge. After the thickness gauge is calibrated, the thickness gauge is controlled to move toward the sheet.

[0013] In the above embodiment, the thickness gauge undergoes the operations of calibration, adjustment and thickness measurement in sequence during the movement, so that the thickness of the sheet can be measured more accurately.

[0014] In some embodiments, the measuring method comprises: After the thickness gauge is demarcated, measured and calibrated, the thickness gauge is controlled to decelerate to stop and then return to the origin position.

[0015] In the above embodiment, after the thickness gauge is calibrated, measured and calibrated, it returns to the origin, so that the thickness gauge reciprocates and continuously measures the thickness of the sheet.

[0016] The measurement system of the embodiment of the present application includes: a thickness gauge capable of reciprocating along a predetermined path; A calibration piece, the calibration piece is arranged on the movement path of the thickness gauge; a calibration sheet connected to the calibration sheet; and A controller connected to the thickness gauge, wherein the controller is configured to: Control the thickness gauge to accelerate from the origin to the calibration piece; After the speed of the thickness gauge reaches a predetermined speed, controlling the thickness gauge to move at a uniform speed at the predetermined speed, wherein the predetermined speed is greater than 2 mm / s; When the thickness gauge moves at a uniform speed at the predetermined speed, the thickness gauge passes through the calibration sheet and the sheet material in sequence, so as to calibrate the thickness gauge and measure the thickness of the sheet material after the thickness gauge is calibrated.

[0017] In the measurement system of the implementation mode of the present application, the thickness gauge is controlled to accelerate first, and then moves at a constant speed after the thickness gauge reaches a speed greater than 2 mm / s to successively calibrate and measure the thickness of the sheet, so that the thickness gauge can be calibrated and measured at a faster and uniform speed, which is beneficial to improving the efficiency of measuring the thickness of the sheet and the measurement is more accurate.

[0018] In some embodiments, the length of the calibration piece is greater than the length of the calibration piece. In the above embodiments, the thickness gauge can obtain enough data when passing through the calibration piece, so that the thickness gauge is accurately calibrated.

[0019] In some embodiments, the thickness gauge includes a bracket and a sensor disposed on the bracket, the sensor is used to measure the thickness of the sheet, and the measurement system includes a temperature regulating device connected to the sensor, the temperature regulating device is used to regulate the temperature of the sensor. In the above embodiment, the temperature regulating device regulates the temperature of the sensor, reduces the risk of temperature drift of the sensor, and improves the accuracy of the sensor thickness measurement.

[0020] In some embodiments, the temperature control device includes a cavity and a gas pressure component, the sensor is accommodated in the cavity, and the gas pressure component is used to pass gas into the cavity. In the above embodiment, the temperature of the sensor is adjusted by gas, so that the temperature adjustment of the sensor is easier to achieve, which can reduce the cost of the temperature control device.

[0021] In some embodiments, the measuring system includes an air-floating guide rail, and the bracket is slidably disposed on the air-floating guide rail. In the above embodiments, the air-floating guide rail can make the bracket drive the sensor to move more smoothly, which is conducive to improving the accuracy of the sensor's thickness measurement.

[0022] In some embodiments, the distance between the origin and the calibration piece is L, L≥50 mm. In the above embodiment, L≥50 mm, so that the thickness gauge has a long enough distance to accelerate, so that the thickness gauge can reach a predetermined speed before reaching the calibration piece.

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings: Figure 1 Schematic diagram of the flow of the measurement method of some embodiments of the present invention; Figure 2 It is a schematic diagram of the structure of the measurement system of some embodiments of the present invention; Figure 3 Schematic diagram of the flow of the measurement method of some embodiments of the present invention; Figure 4 Schematic diagram of the structure of the measurement system of some embodiments of the present invention.

[0025] Description of reference numerals: 1000- measuring system; 100- thickness gauge; 10- bracket; 20- sensor; 200- calibration piece; 300- sheet; 400- calibration piece; 500- controller; 600- temperature control device; 610- chamber; 620- air pressure assembly; 700- air floatation guide rail. DETAILED DESCRIPTION

[0026] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0027] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0028] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0029] If there is no special explanation, all steps of the present application can be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), which means that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, it is mentioned that the method may also include step (c), which means that step (c) can be added to the method in any order. For example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" in the specification and claims of the present invention and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0031] In the description of the embodiments of the present invention, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In the description of the embodiments of the present invention, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0034] In the description of the embodiments of the present invention, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0035] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0036] Energy conservation and emission reduction are the key to the sustainable development of the automotive industry. In this case, electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development. Battery cells generally include pole pieces. During the production process of pole pieces, the thickness of the pole pieces needs to be tested. However, the efficiency of measuring the thickness of pole pieces in related technologies needs to be further improved.

[0037] The implementation manner of the present application controls the thickness gauge to accelerate first, and then moves at a constant speed after the thickness gauge reaches a speed greater than 2 mm / s to successively calibrate and measure the thickness of the sheet, so that the thickness gauge can be calibrated and measured at a faster and uniform speed, which is beneficial to improving the efficiency of measuring the thickness of the sheet and making the measurement more accurate.

[0038] See also Figure 1 and Figure 2 The present invention provides a measuring method for measuring the thickness of a sheet 300, and the measuring method comprises: S10, controlling the thickness gauge 100 to accelerate from the origin position toward the calibration piece 200; S20, after the speed of the thickness gauge 100 reaches a predetermined speed, controlling the thickness gauge 100 to move at a predetermined speed at a uniform speed, the predetermined speed being greater than 2 mm / s; S30, when the thickness gauge 100 moves at a predetermined uniform speed, the thickness gauge 100 passes through the calibration sheet 200 and the sheet 300 in sequence, so as to calibrate the thickness gauge 100 and measure the thickness of the sheet 300 after the thickness gauge 100 is calibrated.

[0039] Specifically, the sheet 300 may be a pole piece of a battery cell. In the production process of the pole piece, an active material may be coated on a current collector, and after the active material is dried, the active material may be compacted by a rolling mechanism; after the active material is compacted, the thickness of the pole piece needs to be measured, so that parameters such as the compaction degree of the active material can be confirmed, which is conducive to improving the yield of battery cell production.

[0040] The thickness gauge 100 is an instrument for measuring the thickness of an object, and is widely used in industrial production. According to different working principles, the thickness gauge 100 can be divided into multiple types, including an ultrasonic thickness gauge 100, a laser thickness gauge 100, a magnetic thickness gauge 100, and an eddy current thickness gauge 100. For example, the laser thickness gauge 100 may include two opposing laser detectors, and the thickness of the object is obtained by analyzing and calculating the reflected spot position of the laser on the upper and lower surfaces of the measured object.

[0041] In step S10, the origin position of the thickness gauge 100 may be the initial position of the thickness gauge 100 at rest, or in other words, the thickness gauge 100 generally moves from the origin position to a direction away from the origin position during operation and movement, and returns to the origin position after the thickness gauge 100 finishes operation. In the process of the thickness gauge 100 starting to move from the origin position, the thickness gauge 100 generally undergoes accelerated movement, and the accelerated thickness gauge 100 can reach a certain speed. For example, the thickness gauge 100 can be driven to move by a motor screw mechanism, a gear rack mechanism, a belt mechanism, or the like.

[0042] In step S20, the thickness gauge 100 can reach a predetermined speed after acceleration, and the predetermined speed is greater than 2 mm / s. For example, the predetermined speed can be 10 mm / s, 20 mm / s, 30 mm / s, 40 mm / s, 100 mm / s, 150 mm / s, 200 mm / s, 250 mm / s, etc. After the thickness gauge 100 reaches the predetermined speed, the thickness gauge 100 runs at a uniform speed, which is conducive to the calibration and thickness measurement of the thickness gauge 100.

[0043] In step S30, the thickness gauge 100 is calibrated and measured at a constant speed at a predetermined speed, so that the thickness gauge 100 is not prone to shaking during the calibration and thickness measurement process. In other words, if the thickness gauge 100 is calibrated and measured during the acceleration process, the thickness gauge 100 is prone to shaking, and the accuracy of the calibration and thickness measurement is low.

[0044] It should be pointed out that the thickness gauge 100 passes through the calibration plate 200 and the sheet 300, which means that the thickness gauge 100 can pass through the calibration plate 200 and the sheet 300 from one side, and the thickness gauge 100 can emit laser or other detection light to the calibration plate 200 and the sheet 300, thereby achieving calibration and thickness measurement.

[0045] In summary, in the measurement method of the embodiment of the present application, the thickness gauge 100 is controlled to accelerate first, and then moves at a constant speed after the thickness gauge 100 reaches a speed greater than 2 mm / s to successively calibrate and measure the thickness of the sheet 300, so that the thickness gauge 100 can be calibrated and measured at a faster and uniform speed, which is beneficial to improving the efficiency of measuring the thickness of the sheet 300, and the measurement is more accurate.

[0046] In some embodiments, the measuring method further comprises: The thickness gauge 100 is controlled to accelerate from the origin to the speed before the calibration piece 200 to reach a predetermined speed.

[0047] In other words, the distance between the calibration piece 200 and the origin position of the thickness gauge 100 is long enough so that the thickness gauge 100 can reach a predetermined speed after acceleration before moving to the calibration piece 200. Before the thickness gauge 100 moves to the calibration piece 200, the thickness gauge 100 cannot obtain calibration data. When the thickness gauge 100 moves to the calibration piece 200, the thickness gauge 100 can emit target light to the calibration piece 200 and receive the target light reflected by the calibration piece 200, thereby obtaining calibration data, and thus the thickness gauge 100 can be calibrated.

[0048] In one example, if the length of the calibration piece 200 is 30 mm and the predetermined speed is 200 mm / s, then the calibration time of the thickness gauge 100 is 0.15 s, which is relatively short.

[0049] Therefore, in the above embodiment, the thickness gauge 100 can start calibration after moving to the calibration piece 200 , so that the size of the calibration piece 200 can be fully utilized, more calibration data can be obtained, and the thickness measurement cost of the sheet 300 can be reduced.

[0050] See also Figure 2 and Figure 3 In some embodiments, the measuring method comprises: S01, setting the origin position and the acceleration of the thickness gauge 100; S02, controlling the thickness gauge 100 to move at an acceleration from the origin position, so that the speed of the thickness gauge 100 before moving to the calibration piece 200 reaches a predetermined speed.

[0051] Specifically, in step S01, a position may be marked on the path of movement of the thickness gauge 100, and the thickness gauge 100 may be controlled to move to the marked position, and the position of the thickness gauge 100 at this time may be recorded as the origin position, thereby completing the setting of the origin position of the thickness gauge 100. The acceleration of the thickness gauge 100 may be set by controlling the rotation speed of a driving member such as a motor connected to the thickness gauge 100.

[0052] In step S02, after setting the origin position and acceleration of the thickness gauge 100, the thickness gauge 100 is controlled to move from the set origin position, and the acceleration is the set acceleration, so that the speed of the thickness gauge 100 before moving to the calibration piece 200 reaches a predetermined speed.

[0053] Therefore, in the above embodiment, the thickness gauge 100 is controlled to accelerate from the origin position at a set acceleration, which can increase the probability that the speed of the thickness gauge 100 reaches a predetermined speed before moving to the calibration piece 200.

[0054] See also Figure 4 In some embodiments, the measuring method comprises: After the thickness gauge 100 measures the thickness of the sheet 300 , the thickness gauge 100 is controlled to keep moving at a predetermined speed so that the thickness gauge 100 passes through the calibration sheet 400 to calibrate the thickness gauge 100 .

[0055] Specifically, the calibration of the thickness gauge 100 is an important process to ensure the accuracy and reliability of the measurement results. When the thickness gauge 100 passes through the calibration sheet 400, the thickness gauge 100 can emit target light to the calibration sheet 400, and the thickness gauge 100 can calibrate the thickness gauge 100 after receiving the light reflected by the calibration sheet 400. During the calibration process, the thickness gauge 100 maintains a predetermined speed, so that the thickness gauge 100 is calibrated more efficiently.

[0056] In the direction of travel of the thickness gauge 100, the calibration sheet 200, the sheet 300 and the calibration sheet 400 may be arranged in sequence, so that the thickness gauge 100 passes through the calibration sheet 200, the sheet 300 and the calibration sheet 400 in sequence during the travel. Therefore, in the above embodiment, after the thickness gauge 100 is calibrated by the calibration sheet 400, the thickness measurement result of the thickness gauge 100 is more accurate.

[0057] See also Figure 2 In some embodiments, the measuring method comprises: After the thickness gauge 100 passes through the calibration sheet 200 at a predetermined speed, the thickness gauge 100 is controlled to maintain the predetermined speed so that the thickness gauge 100 passes through the calibration sheet 400 to calibrate the thickness gauge 100 . After the thickness gauge 100 is calibrated, the thickness gauge 100 is controlled to move toward the sheet 300 .

[0058] Specifically, in the direction of travel of the thickness gauge 100, the calibration sheet 200, the calibration sheet 400 and the sheet 300 may be arranged in sequence, so that the thickness gauge 100 passes through the calibration sheet 200, the calibration sheet 400 and the sheet 300 in sequence during the travel. In this way, the thickness gauge 100 undergoes the operations of calibration, calibration and thickness measurement in sequence during the movement, so that the thickness of the sheet 300 can be measured more accurately.

[0059] See also Figure 4 In some embodiments, the measuring method comprises: After the thickness gauge 100 is calibrated, the thickness is measured and calibrated, the thickness gauge 100 is controlled to decelerate to stop, and then returns to the origin position. In other words, the thickness gauge 100 can measure the thickness cyclically, and can be calibrated before each thickness measurement, so as to reduce the influence of temperature and vibration on the thickness gauge 100 and reduce the drift of the electrode measurement data. Therefore, in the above embodiment, after the thickness gauge 100 is calibrated, the thickness is measured and calibrated, it returns to the origin, so that the thickness gauge 100 can reciprocate and continuously measure the thickness of the sheet 300.

[0060] See also Figure 2 The measuring system 1000 of the embodiment of the present application includes a thickness gauge 100, a calibration sheet 200, a calibration sheet 400 and a controller 500. The thickness gauge 100 can reciprocate along a predetermined path; the calibration sheet 200 is arranged on the movement path of the thickness gauge 100; the calibration sheet 400 is connected to the calibration sheet 200; the controller 500 is connected to the thickness gauge 100, and the controller 500 is configured as follows: Control the thickness gauge 100 to accelerate from the origin position to the calibration piece 200; After the speed of the thickness gauge 100 reaches a predetermined speed, the thickness gauge 100 is controlled to move at a predetermined speed at a constant speed, and the predetermined speed is greater than 2 mm / s; When the thickness gauge 100 moves at a predetermined uniform speed, the thickness gauge 100 passes through the calibration sheet 200 and the sheet 300 in sequence, so as to calibrate the thickness gauge 100 and measure the thickness of the sheet 300 after the thickness gauge 100 is calibrated.

[0061] Specifically, the calibration sheet 200 and the calibration sheet 400 can both be tungsten steel sheets, and the calibration sheet 200 and the calibration sheet 400 can be an integrated structure. Therefore, during the calibration and calibration process of the thickness gauge 100, the calibration data and the calibration data of the thickness gauge 100 are the same type of data, so that the thickness gauge 100 obtains more data during the calibration process, which is beneficial to the calibration of the thickness gauge 100. In an example, the total length of the calibration sheet 200 and the calibration sheet 400 can be 60 mm, wherein the length of the calibration sheet 200 can be 40 mm, and the length of the calibration sheet 400 can be 20 mm.

[0062] Therefore, in the measurement system 1000 of the embodiment of the present application, the thickness gauge 100 is controlled to accelerate first, and then move at a constant speed after the thickness gauge 100 reaches a speed greater than 2 mm / s to successively perform calibration and measure the thickness of the sheet 300, so that the thickness gauge 100 can be calibrated and measured at a faster and uniform speed, which is beneficial to improving the efficiency of measuring the thickness of the sheet 300, and the measurement is more accurate.

[0063] In some embodiments, the length of the calibration sheet 200 is greater than the length of the calibration sheet 400. In the above embodiments, the thickness gauge 100 can obtain enough data when passing through the calibration sheet 200, so that the thickness gauge 100 is accurately calibrated. In one example, the total length of the calibration sheet 200 and the calibration sheet 400 can be 60 mm, wherein the length of the calibration sheet 200 can be 40 mm, and the length of the calibration sheet 400 can be 20 mm.

[0064] See also Figure 2 In some embodiments, the thickness gauge 100 includes a bracket 10 and a sensor 20 disposed on the bracket 10 , the sensor 20 is used to measure the thickness of the sheet 300 , and the measuring system 1000 includes a temperature control device 600 connected to the sensor 20 , and the temperature control device 600 is used to adjust the temperature of the sensor 20 .

[0065] Specifically, the bracket 10 is used to carry the sensor 20, and the bracket 10 can be set to a specific structure according to the installation structure of the sensor 20. For example, the bracket 10 can be a C-shaped bracket. The sensor 20 is, for example, a light sensor 20. The number of sensors 20 can be two, and the two sensors 20 are arranged opposite to each other. When measuring the thickness of the sheet 300, both sensors 20 can emit target light to the sheet 300 and receive the target light reflected by the sheet 300. According to the duration of emitting and receiving the target light and the speed of light, the distance between each sensor 20 and the sheet 300 can be calculated. Since the distance between the two sensors 20 is fixed, the distance between the two sensors 20 is subtracted from the distance between each sensor 20 and the sheet 300, so as to obtain the thickness of the sheet 300.

[0066] The sensor 20 can be fixed to the bracket 10 by fasteners such as screws, so that the position of the sensor 20 is fixed. The temperature control device 600 can be in contact with the sensor 20 or not. Generally, the sensor 20 is sensitive to temperature. A high temperature can easily cause the data measured by the sensor 20 to have temperature drift, resulting in inaccurate measurement. Therefore, in the above embodiment, the temperature control device 600 adjusts the temperature of the sensor 20, reduces the risk of temperature drift of the sensor 20, and improves the accuracy of the thickness measurement of the sensor 20.

[0067] In one example, the temperature regulating device 600 can keep the temperature of the sensor 20 below 45° C.

[0068] See also Figure 2 In some embodiments, the temperature regulating device 600 includes a cavity 610 and a gas pressure component 620 , the sensor 20 is accommodated in the cavity 610 , and the gas pressure component 620 is used to introduce gas into the cavity 610 .

[0069] Specifically, the sensor 20 is accommodated in the cavity 610, so that the air pressure assembly 620 can easily blow air to the sensor 20, thereby reducing the temperature of the sensor 20. The air pressure assembly 620 may include components such as an air pump and an air pipe. The air pump can form a positive pressure in the cavity 610, thereby taking away the heat generated by the sensor 20.

[0070] Thus, in the above embodiment, the temperature of the sensor 20 is adjusted by the gas, so that the temperature adjustment of the sensor 20 is easier to achieve, and the cost of the temperature adjustment device 600 can be reduced.

[0071] In some embodiments, the cavity 610 is a heat-insulating cavity 610 . For example, the cavity 610 may be made of a material with low thermal conductivity, so that the cavity 610 has good heat-insulating properties.

[0072] See also Figure 2 In some embodiments, the measuring system 1000 includes an air-floating guide rail 700, and the bracket 10 is slidably disposed on the air-floating guide rail 700. In the above embodiments, the air-floating guide rail 700 can make the bracket 10 drive the sensor 20 to move more smoothly, which is conducive to improving the accuracy of the thickness measurement of the sensor 20.

[0073] See also Figure 2 In some embodiments, the distance between the origin and the calibration piece 200 is L, L ≥ 50 mm. In the above embodiment, L ≥ 50 mm, so that the thickness gauge 100 has a sufficiently long distance for acceleration, so that the thickness gauge 100 can reach a predetermined speed before reaching the calibration piece 200.

[0074] See also Figure 2 In some embodiments, the controller 500 is used to control the thickness gauge 100 to accelerate from the origin position to the speed before the calibration piece 200 reaches a predetermined speed. In the above embodiment, the thickness gauge 100 can start calibration after moving to the calibration piece 200, so that the size of the calibration piece 200 can be fully utilized, more calibration data can be obtained, and the thickness measurement cost of the sheet 300 can be reduced.

[0075] See also Figure 2 In some embodiments, the controller 500 is used to set the origin position and the acceleration of the thickness gauge 100; and to control the thickness gauge 100 to accelerate from the origin position with the acceleration, so that the speed of the thickness gauge 100 before it moves to the calibration piece 200 reaches a predetermined speed. In the above embodiment, the thickness gauge 100 is controlled to accelerate from the origin position with the set acceleration, which can increase the probability that the speed of the thickness gauge 100 before it moves to the calibration piece 200 reaches the predetermined speed.

[0076] See also Figure 2In some embodiments, the controller 500 is used to control the thickness gauge 100 to maintain a predetermined speed after the thickness gauge 100 measures the thickness of the sheet 300 so that the thickness gauge 100 passes through the calibration sheet 400 to calibrate the thickness gauge 100. In the above embodiment, after the thickness gauge 100 is calibrated by the calibration sheet 400, the thickness measurement result of the thickness gauge 100 is more accurate.

[0077] See also Figure 2 In some embodiments, after the thickness gauge 100 passes through the calibration sheet 200 at a predetermined speed, the controller 500 controls the thickness gauge 100 to keep moving at a predetermined speed so that the thickness gauge 100 passes through the calibration sheet 400 to calibrate the thickness gauge 100. After the thickness gauge 100 is calibrated, the controller 500 controls the thickness gauge 100 to move toward the sheet 300. In this way, the thickness gauge 100 sequentially undergoes the operations of calibration, calibration, and thickness measurement during the movement, so that the thickness of the sheet 300 can be measured more accurately.

[0078] See also Figure 2 In some embodiments, the controller 500 is used to control the thickness gauge 100 to decelerate to a stop and then return to the origin position after the thickness gauge 100 is calibrated, measured and calibrated. In the above embodiment, after the thickness gauge 100 is calibrated, measured and calibrated, it returns to the origin, so that the thickness gauge 100 can reciprocate and continuously measure the thickness of the sheet 300.

[0079] 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 them; 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 by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A measuring method for measuring the thickness of a sheet material, characterized in that: The measuring method comprises: Control the thickness gauge to accelerate from the origin to the calibration piece; After the speed of the thickness gauge reaches a predetermined speed, controlling the thickness gauge to move at a uniform speed at the predetermined speed, wherein the predetermined speed is greater than 2 mm / s; When the thickness gauge moves at a uniform speed at the predetermined speed, the thickness gauge passes through the calibration sheet and the sheet material in sequence, so as to calibrate the thickness gauge and measure the thickness of the sheet material after the thickness gauge is calibrated.

2. The measuring method according to claim 1, characterized in that: The measuring method further comprises: The thickness gauge is controlled to accelerate from the origin position to a speed before the calibration piece to reach the predetermined speed.

3. The measuring method according to claim 2, characterized in that: The measuring method comprises: Setting the origin position and the acceleration of the thickness gauge; The thickness gauge is controlled to accelerate from the origin position at the acceleration, so that the speed of the thickness gauge before it moves to the calibration piece reaches the predetermined speed.

4. The measuring method according to claim 1, characterized in that: The measuring method comprises: After the thickness gauge measures the thickness of the sheet material, the thickness gauge is controlled to keep moving at the predetermined speed so that the thickness gauge passes through a calibration sheet to calibrate the thickness gauge.

5. The measuring method according to claim 1, characterized in that: The measuring method comprises: After the thickness gauge passes through the calibration sheet at the predetermined speed, the thickness gauge is controlled to keep moving at the predetermined speed so that the thickness gauge passes through the calibration sheet to calibrate the thickness gauge. After the thickness gauge is calibrated, the thickness gauge is controlled to move toward the sheet.

6. The measuring method according to any one of claims 4 to 5, characterized in that: The measuring method comprises: After the thickness gauge is demarcated, measured and calibrated, the thickness gauge is controlled to decelerate to stop and then return to the origin position.

7. A measurement system, characterized in that: include: a thickness gauge capable of reciprocating along a predetermined path; A calibration piece, the calibration piece is arranged on the movement path of the thickness gauge; A calibration sheet connected to the calibration sheet; and A controller connected to the thickness gauge, wherein the controller is configured to: Control the thickness gauge to accelerate from the origin to the calibration piece; After the speed of the thickness gauge reaches a predetermined speed, controlling the thickness gauge to move at a uniform speed at the predetermined speed, wherein the predetermined speed is greater than 2 mm / s; When the thickness gauge moves at a uniform speed at the predetermined speed, the thickness gauge passes through the calibration sheet and the sheet material in sequence, so as to calibrate the thickness gauge and measure the thickness of the sheet material after the thickness gauge is calibrated.

8. The measuring system according to claim 7, characterized in that The length of the calibration piece is greater than the length of the calibration piece.

9. The measuring system according to claim 7, characterized in that The thickness gauge comprises a bracket and a sensor arranged on the bracket, the sensor is used to measure the thickness of the sheet material, and the measuring system comprises a temperature regulating device connected to the sensor, the temperature regulating device is used to regulate the temperature of the sensor.

10. The measuring system according to claim 9, characterized in that The temperature regulating device comprises a cavity and a gas pressure component, the sensor is accommodated in the cavity, and the gas pressure component is used to introduce gas into the cavity.

11. The measuring system according to claim 9, characterized in that The measuring system comprises an air-floating guide rail, and the bracket is slidably arranged on the air-floating guide rail.

12. The measuring system according to claim 7, characterized in that The distance between the origin position and the calibration piece is L, and L is ≥ 50 mm.

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