Optical shadow thickness gauge using through-beam probe

Abstract

The invention discloses an optical shadow thickness gauge using a beam-type probe, belonging to the technical field of thickness measuring equipment, and comprising two support seats, a roller, two probes and an illumination mechanism. The optical shadow thickness gauge of the invention is provided with an installation box, an illumination component, a driving component and a connecting component, wherein the driving component and the connecting component enable the light source to move horizontally, thereby measuring the thickness of different positions of an object, thereby improving the comprehensiveness and accuracy of the measurement.

Description

Technical Field

[0001] The invention belongs to the technical field of thickness measuring equipment, and in particular relates to an optical shadow thickness gauge using a through-beam probe. Background Art

[0002] The working principle of the optical shadow thickness gauge is based on the propagation of light and the formation of shadows. When light shines on the object to be measured, the object will absorb, reflect or transmit the light, thus forming a shadow behind the object. By accurately measuring and analyzing the size, shape and position changes of these shadows, the thickness of the object to be measured can be indirectly calculated.

[0003] Optical shadow thickness gauges are widely used in fields that require high-precision thickness measurement. They can be used to measure the thickness of materials such as metals, plastics, and glass, especially in the measurement of tiny thicknesses such as thin films and coatings. Optical shadow thickness gauges have the advantages of high precision, non-contact measurement, real-time measurement, and a wide range of applications.

[0004] However, existing optical shadow thickness gauges usually use a single probe or a combination of a fixed-position light source and a probe. This design has certain limitations in practical applications. For example, when different areas of an object need to be covered during the measurement process, a fixed-position light source cannot adapt to this scenario, which affects the accuracy and reliability of the measurement results. Summary of the invention

[0005] The purpose of the present invention is to provide an optical shadow thickness gauge using a through-beam probe, which is used to solve the technical problem in the prior art that different areas of an object need to be covered during the measurement process, and a fixed-position light source cannot adapt to such a scenario, resulting in the accuracy and reliability of the measurement results being affected.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An optical shadow thickness gauge using a through-beam probe comprises: two support seats; a roller rotatably mounted between the two support seats; two probes respectively mounted on opposite sides of the two support seats and located below the roller; an illumination mechanism comprising: a mounting box with an opening at the bottom mounted on the tops of the two support seats; an illumination component slidably connected to the mounting box and used to project light onto an object to be measured; a driving component used to drive the illumination component to move horizontally; a connecting component used to connect the illumination component and the driving component, the connecting component comprising a lubricating component, the lubricating component being used to apply lubricating oil to the driving component.

[0008] Preferably, the lighting assembly includes: a sliding seat, in which two sliding grooves are arranged, and the sliding grooves are slidably connected to the bottom of the installation box; a pressing block, which is installed on the side of the sliding seat; and a light source lamp, which is installed on the bottom surface of the sliding seat.

[0009] Preferably, the driving assembly includes: a motor installed on a side of the installation box; a lead screw rotatably connected to the installation box, one end of which is fixedly connected to a power output shaft of the motor.

[0010] Preferably, the connecting assembly includes: a screw nut, which is sleeved on the screw; a movable seat, which is fixedly sleeved on the screw nut and fixedly connected to the sliding seat; two vertical plates, both installed on the top surface of the movable seat; a rotating rod, which is rotatably installed on the two vertical plates; two rollers, which are fixedly sleeved on the rotating rod and contact with the inner top surface of the mounting box; and a cam, which is fixedly sleeved on the rotating rod.

[0011] Preferably, the lubricating components include: an oil storage tank, installed on the movable seat, for containing lubricating oil; two lubricating parts, respectively installed at the two ends of the lead screw nut, the lubricating parts include: a fixed ring, fixedly connected to the end of the lead screw nut; a hollow ring, installed on the inner wall of the fixed ring; a plurality of oil outlet grooves, equidistantly arranged on the inner wall of the hollow ring; a sponge ring, installed on the inner wall of the hollow ring, in contact with the lead screw; two conveying parts, both installed on the top surface of the oil storage tank, for conveying the lubricating oil in the oil storage tank to the hollow ring.

[0012] Preferably, the conveying member includes: a piston cylinder installed in the oil storage tank, a piston plate and a piston rod being slidably connected in the piston cylinder; an oil suction pipe, one end of which is connected to the piston cylinder, and the other end of which is connected to the oil storage tank; an oil outlet pipe, one end of which is connected to the piston cylinder, and the other end of which is connected to the hollow ring; a push plate, fixedly connected to the piston rod and in contact with the cam; and a spring, both ends of which are respectively connected to the push plate and the piston cylinder.

[0013] Preferably, the optical shadow thickness gauge using a through-beam probe also includes a cleaning mechanism, which includes: a fan installed on the support seat, a first connecting tube and a second connecting tube installed on the air outlet pipe of the fan; two first hollow seats, respectively installed on the opposite sides of the two support seats, respectively located directly above the two probes, any one of the first hollow seats is fixedly connected to the second connecting tube; two first air outlet slots, respectively opened on the bottom surfaces of the two first hollow seats, respectively facing the two probes; a connecting tube, both ends of which are respectively connected to the two first hollow seats; a second hollow seat, installed on the support seat and connected to the first connecting tube; a second air outlet slot, opened on the second hollow seat, facing the light source lamp.

[0014] Preferably, the illumination mechanism further comprises: a push switch, installed on the inner wall of the installation box, for controlling the start-up of the fan, facing the push block.

[0015] Preferably, the optical shadow thickness gauge using the through-beam probe further includes a control system, the control system including: a data acquisition module for collecting historical comprehensive data of the optical shadow thickness gauge, the historical comprehensive data including comprehensive influencing parameters and stability data set of the optical shadow thickness gauge, converting the stability data set into a stability parameter number, the stability parameter number is , Represents the total number of stability parameter numbers; a model training module is used to train a machine learning model for predicting the stability parameter numbers at future moments based on the comprehensive influencing parameters of the optical shadow thickness gauge, and then obtain the stability data set corresponding to the stability parameter number; a data processing module generates a stability influence coefficient based on the predicted stability data set, and generates a stability level based on the stability influence coefficient; an indicator light module is used to emit lights of different colors according to the stability level generated by the data processing module.

[0016] Preferably, the stability level is generated as follows: the stability level includes stability level 1, stability level 2 and stability level 3; the threshold range of the preset stability influence coefficient is , , < ;like , at this time, it means that the stability is good, and the data processing module generates the first level of stability; if , at this time, it means that the stability is normal, and the data processing module generates the second level of stability; if ,At this time, it indicates that the stability is poor, and the data processing module generates the third level of stability.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] 1. The optical shadow thickness gauge of the present invention is provided with an installation box, an illumination component, a driving component and a connecting component. The driving component and the connecting component enable the light source to move horizontally, so as to measure the thickness of different positions of the object, thereby improving the comprehensiveness and accuracy of the measurement.

[0019] 2. The lubricating components in the present invention are provided with an oil storage tank, a lubricating part and a conveying part. When the motor drives the moving seat to move through the lead screw and the lead screw nut, the roller will drive the rotating rod to rotate, and then drive the cam to rotate. Under the cooperation of the rotating cam and the spring, the lubricating oil in the oil storage tank will be transported to the hollow ring, and then the lubricating oil will enter the sponge ring, and then the sponge ring will apply the lubricating oil to the lead screw, so that the friction between the lead screw and the lead screw nut will be significantly reduced, making the relative movement of the two smoother, reducing the heat and wear generated by friction, and ensuring the stability and durability of the measurement process; and there is no need to set up an independent power source for conveying and applying the lubricating oil, which reduces the cost of use.

[0020] 3. The optical shadow thickness gauge of the present invention is provided with a cleaning mechanism, a pressing block and a pressing switch. After the measurement is completed, the motor can be started to make the pressing block squeeze the pressing switch, so that the fan runs and the surface of the probe and the light source lamp are automatically cleaned, thereby avoiding the influence of dust and other impurities on the measurement accuracy and ensuring the continuous accuracy of the measurement.

[0021] 4. The control system in the present invention can predict and prevent failures in advance by setting up a data acquisition module, a model training module, a data processing module and an indicator light module, thereby significantly reducing the downtime and maintenance costs of the equipment and improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 The three-dimensional optical shadow thickness gauge using the beam-type probe in the present invention Figure 1 ;

[0024] Figure 2 The three-dimensional optical shadow thickness gauge using the beam-type probe in the present invention Figure 2 ;

[0025] Figure 3 It is a schematic diagram of the assembly structure of the support frame, roller and cleaning mechanism in the present invention;

[0026] Figure 4 An exploded view of the illumination mechanism of the present invention;

[0027] Figure 5 is a three-dimensional diagram of the connection assembly in the present invention;

[0028] Figure 6It is a schematic diagram of the assembly structure of the illumination component and the connection component in the present invention;

[0029] Figure 7 It is a three-dimensional diagram of the lubricating component in the present invention;

[0030] Figure 8 An exploded view of the lubricating part of the present invention;

[0031] Fig. 9 A three-dimensional diagram of the optical shadow thickness gauge using a through-beam probe in the present invention during measurement;

[0032] Fig.10 It is a module diagram of the control system in the present invention;

[0033] Reference numerals: 100, support seat; 101, roller; 102, probe; 110, cleaning mechanism; 111, fan; 112, air outlet pipe; 113, first connecting pipe; 114, second connecting pipe; 115, first hollow seat; 116, first air outlet slot; 117, connecting pipe; 118, second hollow seat; 119, second air outlet slot; 200, illumination mechanism; 201, installation box; 202, fixing plate; 203, through slot; 204, push switch; 210, illumination assembly; 211, sliding seat; 212, slide slot; 213, plug plate; 214 , pressing block; 215, light source lamp; 220, connecting assembly; 221, screw nut; 222, moving seat; 223, vertical plate; 224, rotating rod; 225, roller; 226, cam; 227, oil storage tank; 228, lubricating part; 2281, fixing ring; 2282, hollow ring; 2283, oil outlet groove; 2284, sponge ring; 229, conveying part; 2291, piston cylinder; 2292, oil extraction pipe; 2293, oil outlet pipe; 2294, push plate; 2295, spring; 230, driving assembly; 231, motor; 232, screw. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0035] Example 1

[0036] like Figure 1 , Figure 2 , Figure 4 and Fig. 9As shown, the optical shadow thickness gauge using a through-beam probe includes two support seats 100 , a roller 101 , two probes 102 and an illumination mechanism 200 .

[0037] The bottom of the two support seats 100 are both equipped with widening plates, which increase the contact area between the support seats 100 and the ground and improve the stability of the support seats 100. The roller 101 is rotatably installed between the two support seats 100; the two probes 102 are respectively installed on the opposite sides of the two support seats 100, and the two probes 102 are located below the roller 101. The probes 102 are CCD probes 102, which have the advantages of stability, reliability, high precision, etc.

[0038] The illumination mechanism 200 includes an installation box 201, an illumination assembly 210, a driving assembly 230 and a connecting assembly 220. The bottom of the installation box 201 is open, and a fixing plate 202 is fixedly installed on both sides of the installation box 201, and the fixing plate 202 is fixedly connected to the top of the two support seats 100. The illumination assembly 210 is slidably connected to the installation box 201, and the illumination assembly 210 is used to project light to the object to be measured; the driving assembly 230 is used to drive the illumination assembly 210 to move horizontally; the connecting assembly 220 is used to connect the illumination assembly 210 and the driving assembly 230, and the connecting assembly 220 includes a lubricating component, and the lubricating component is used to apply lubricating oil to the driving assembly 230.

[0039] Specifically, the object to be measured is placed on the roller 101, and then the illumination component 210 is started to project light onto the object. When the light is irradiated onto the object, the object absorbs, reflects or transmits the light, thereby forming a shadow behind the object. The size, shape and position changes of these shadows are accurately measured and analyzed by the two probes 102, and the thickness of the object to be measured can be calculated.

[0040] During measurement, by starting the driving assembly 230, the driving assembly 230 drives the connecting assembly 220 and the illumination assembly 210 to move, so that the illumination assembly 210 projects light to different positions of the object, and the two probes 102 measure the thickness of different positions of the object, thereby improving the accuracy of the measurement. When the connecting assembly 220 moves, the lubricating component in the connecting assembly 220 will apply lubricating oil to the driving assembly 230, thereby facilitating the long-term use of the driving assembly 230.

[0041] like Figure 2 and Figure 4As shown, the illumination assembly 210 includes a sliding seat 211, a pressing block 214 and a light source lamp 215. Two slide grooves 212 are arranged in the sliding seat 211, and the slide grooves 212 are slidably connected to the bottom of the installation box 201; the pressing block 214 is installed on the side of the sliding seat 211; and the light source lamp 215 is installed on the bottom surface of the sliding seat 211. Through grooves 203 are opened on the front and side of the installation box 201, and two plug plates 213 are also installed on the sliding seat 211, and the plug plates 213 pass through the through grooves 203 and are slidably connected to the through grooves 203.

[0042] Specifically, when the light source lamp 215 is on, light will be projected onto the object to be measured below; when the sliding seat 211 moves, the light source lamp 215 will be driven to move.

[0043] like Figure 2 and Figure 4 As shown, the driving assembly 230 includes a motor 231 and a lead screw 232. The motor 231 is installed on the side of the installation box 201; the lead screw 232 is rotatably connected to the installation box 201, and one end of the lead screw 232 is fixedly connected to the power output shaft of the motor 231.

[0044] Specifically, when the motor 231 is running, the power output shaft of the motor 231 will drive the lead screw 232 to rotate.

[0045] like Figure 4-Figure 6 As shown, the connecting assembly 220 includes a lead screw nut 221, a moving seat 222, two vertical plates 223, a rotating rod 224, two rollers 225 and a cam 226. The lead screw nut 221 is sleeved on the lead screw 232, and the lead screw nut 221 can move horizontally along the lead screw 232. The moving seat 222 is fixedly sleeved on the lead screw nut 221, and the moving seat 222 is fixedly connected to the sliding seat 211; the two vertical plates 223 are both installed on the top surface of the moving seat 222; the rotating rod 224 is rotatably installed on the two vertical plates 223; the two rollers 225 are both fixedly sleeved on the rotating rod 224, and the two rollers 225 are in contact with the inner top surface of the installation box 201; the cam 226 is fixedly sleeved on the rotating rod 224.

[0046] Specifically, when the lead screw 232 rotates, the lead screw nut 221 will drive the moving seat 222 to move, and then drive the sliding seat 211 to move. When the moving seat 222 moves, it will drive the two vertical plates 223 to move, and then drive the rotating rod 224 and the roller 225 to move. Since the roller 225 is in contact with the top of the installation box 201, when the roller 225 moves, the roller 225 itself will rotate, and then drive the rotating rod 224 to rotate, and then drive the cam 226 to rotate.

[0047] like Figure 5-Figure 8As shown, the lubricating components include an oil storage tank 227, two lubricating parts 228 and two conveying parts 229. The oil storage tank 227 is installed on the movable seat 222, and the oil storage tank 227 is used to contain lubricating oil; the two lubricating parts 228 are respectively installed at both ends of the screw nut 221, and the lubricating parts 228 include a fixed ring 2281, a hollow ring 2282, a plurality of oil outlet grooves 2283 and a sponge ring 2284. The fixed ring 2281 is fixedly connected to the end of the screw nut 221; the hollow ring 2282 is installed on the inner wall of the fixed ring 2281; a plurality of oil outlet grooves 2283 are equidistantly arranged on the inner wall of the hollow ring 2282; the sponge ring 2284 is installed on the inner wall of the hollow ring 2282, and the sponge ring 2284 is in contact with the screw 232;

[0048] The two conveying members 229 are both installed on the top surface of the oil storage tank 227, and the conveying member 229 is used to convey the lubricating oil in the oil storage tank 227 to the hollow ring 2282. The conveying member 229 includes a piston cylinder 2291, an oil extraction pipe 2292, an oil outlet pipe 2293, a push plate 2294 and a spring 2295. The piston cylinder 2291 is installed in the oil storage tank 227, and the piston plate and the piston rod are slidably connected in the piston cylinder 2291; one end of the oil extraction pipe 2292 is connected to the piston cylinder 2291, and the other end of the oil extraction pipe 2292 is connected to the oil storage tank 227; one end of the oil outlet pipe 2293 is connected to the piston cylinder 2291, and the other end of the oil outlet pipe 2293 is connected to the hollow ring 2282; both the oil extraction pipe 2292 and the oil outlet pipe 2293 are installed with a one-way valve, so that the lubricating oil in the oil storage tank 227 can only enter the piston cylinder 2291 in one direction through the oil extraction pipe 2292, and the lubricating oil in the piston cylinder 2291 can only enter the hollow ring 2282 in one direction through the oil outlet pipe 2293. The push plate 2294 is fixedly connected to the piston rod, and the push plate 2294 contacts the cam 226; the two ends of the spring 2295 are respectively connected to the push plate 2294 and the piston cylinder 2291.

[0049] Specifically, when the push plate 2294 is moved in a direction away from the piston cylinder 2291 , the push plate 2294 will drive the piston rod and the piston plate to move, and then the lubricating oil in the oil storage tank 227 is pumped into the piston cylinder 2291 through the oil extraction pipe 2292 .

[0050] When the push plate 2294 is pushed in the direction close to the piston cylinder 2291, the piston rod and the piston plate are driven to move, and the lubricating oil in the piston cylinder 2291 is transported to the hollow ring 2282 through the oil outlet pipe 2293. The lubricating oil in the hollow ring 2282 will be transported to the sponge ring 2284 through multiple oil outlet grooves 2283, so that the sponge ring 2284 absorbs the lubricating oil, and the sponge ring 2284 that absorbs the lubricating oil will smear the lubricating oil on the screw 232.

[0051] Working principle: In specific use, the object to be measured is placed on the roller 101, such as Fig. 9Then, by starting the light source lamp 215, the light source lamp 215 projects light to the object. When the light is irradiated on the object to be measured, the object will absorb, reflect or transmit the light, thereby forming a shadow behind the object. Then, the size, shape and position changes of these shadows are accurately measured and analyzed by the two probes 102, and the thickness of the object to be measured can be calculated.

[0052] During measurement, by starting the motor 231, the power output shaft of the motor 231 drives the lead screw 232 to rotate, and then the lead screw nut 221 drives the moving seat 222 to move, and then drives the sliding seat 211 to move, and then drives the light source lamp 215 to move, so that the light source lamp 215 projects light to different positions of the object, and the two probes 102 measure the thickness of different positions of the object, thereby improving the accuracy of the measurement.

[0053] When the movable seat 222 moves, it will drive the two vertical plates 223 to move, and then drive the rotating rod 224 and the roller 225 to move. Since the roller 225 is in contact with the top of the installation box 201, when the roller 225 moves, the roller 225 itself will rotate, and then drive the rotating rod 224 to rotate, and then drive the cam 226 to rotate. The rotating cam 226 will intermittently push the push plate 2294 to move. When the push plate 2294 pushes the push plate 2294 in the direction close to the piston cylinder 2291, it drives the piston rod and the piston plate to move, and then the lubricating oil in the piston cylinder 2291 is transported to the hollow ring 2282 through the oil outlet pipe 2293. And because the spring 2295 is provided, the spring 2295 will also push the push plate 2294 to move away from the piston cylinder 2291, so that the push plate 2294 drives the piston rod and the piston plate to move, and then the lubricating oil in the oil storage tank 227 is pumped into the piston cylinder 2291 through the oil extraction pipe 2292.

[0054] With the rotation of the cam 226, the piston cylinder 2291 will continuously transport the lubricating oil in the oil storage tank 227 to the hollow ring 2282. The lubricating oil in the hollow ring 2282 will enter the sponge ring 2284 through multiple oil outlet grooves 2283, so that the sponge ring 2284 absorbs the lubricating oil. The sponge ring 2284 adsorbed with the lubricating oil will apply the lubricating oil to the lead screw 232. After applying the lubricating oil, the friction between the lead screw 232 and the lead screw nut 221 will be significantly reduced, making the relative movement of the two smoother, reducing the heat and wear generated by friction, and extending the service life of the lead screw 232.

[0055] Example 2

[0056] like Figure 1-Figure 3 and Fig. 9As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that the optical shadow thickness gauge using the through-beam probe further includes a cleaning mechanism 110. The cleaning mechanism 110 includes a fan 111, two first hollow seats 115, two first air outlet slots 116, a connecting pipe 117, a second hollow seat 118, and a second air outlet slot 119.

[0057] The fan 111 is installed on the support base 100, and the first connecting tube 113 and the second connecting tube 114 are installed on the air outlet pipe 112 of the fan 111; the two first hollow seats 115 are respectively installed on the opposite sides of the two support bases 100, and the two first hollow seats 115 are respectively located directly above the two probes 102, and any first hollow seat 115 is fixedly connected to the second connecting tube 114; the two first air outlet slots 116 are respectively opened on the bottom surfaces of the two first hollow seats 115, and the two first air outlet slots 116 are respectively facing the two probes 102; the two ends of the connecting tube 117 are respectively connected to the two first hollow seats 115; the second hollow seat 118 is installed on the support base 100, and the second hollow seat 118 is connected to the first connecting tube 113; the second air outlet slot 119 is opened on the second hollow seat 118, and the second air outlet slot 119 faces the light source lamp 215.

[0058] Specifically, when the fan 111 is running, the fan 111 will transport air to the first connecting pipe 113 and the second connecting pipe 114 through the air outlet pipe 112, the air in the first connecting pipe 113 will be transported to the second hollow seat 118, and the air in the second hollow seat 118 will be blown out through the second air outlet slot 119.

[0059] The air in the second connecting pipe 114 will enter into one first hollow seat 115 , and then enter into another first hollow seat 115 through the connecting pipe 117 . The air in the two first hollow seats 115 will be blown out through the two first air outlet slots 116 .

[0060] like Figure 1-Figure 4 As shown, the illumination mechanism 200 further includes a push switch 204 . The push switch 204 is installed on the inner wall of the installation box 201 . The push switch 204 is used to control the start of the fan 111 . The push switch 204 is directly opposite to the push block 214 .

[0061] Specifically, when the push switch 204 is squeezed, the fan 111 starts to run; when the push switch 204 is no longer squeezed, the fan 111 stops running.

[0062] Working principle: In specific use, after the measurement is completed, the object is removed from the roller 101.

[0063] Then, by starting the motor 231, the power output shaft of the motor 231 drives the lead screw 232 to rotate, and then the lead screw nut 221 drives the moving seat 222 and the sliding seat 211 to move, so that the pressing block 214 moves toward the direction of the pressing switch 204, and then the pressing block 214 presses the pressing switch 204, so that the fan 111 starts to run;

[0064] When the fan 111 is running, air will be transported to the first connecting tube 113 and the second connecting tube 114 through the air outlet pipe 112. The air in the first connecting tube 113 will be transported to the second hollow seat 118. The air in the second hollow seat 118 will be blown out through the second air outlet slot 119. The air blown out of the second air outlet slot 119 will be blown toward the light source lamp 215, thereby blowing off the dust attached to the surface of the light source lamp 215, facilitating the long-term use of the light source lamp 215.

[0065] The air in the second connecting pipe 114 will enter into a first hollow seat 115, and the air will enter into another first hollow seat 115 through the connecting pipe 117. The air in the two first hollow seats 115 will be blown out through the two first air outlet slots 116. The air blown out of the first air outlet slots 116 will blow toward the probe 102, thereby blowing off the dust attached to the surface of the probe 102, thereby avoiding measurement errors caused by dust, which is beneficial to improving the measurement accuracy.

[0066] Example 3

[0067] like Fig.10 As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that the optical shadow thickness gauge using a through-beam probe also includes a control system, and the control system includes a data acquisition module, a model training module, a data processing module and an indicator light module, and the modules are connected by wired / wireless means to realize data transmission.

[0068] The data acquisition module is used to collect the historical comprehensive data of the optical shadow thickness gauge, which includes the comprehensive influencing parameters and stability data set of the optical shadow thickness gauge, and convert the stability data set into a stability parameter number. The stability parameter number is , Indicates the total number of stability parameter numbers;

[0069] The comprehensive influencing parameters of the optical shadow thickness gauge include the offset of the lead screw nut 221 , the friction between the lead screw nut 221 and the lead screw 232 , and the center of gravity offset of the sliding seat 211 .

[0070] Specifically, the offset of the screw nut 221 refers to the difference between the measured distance between the outer peripheral surface of the screw nut 221 and the screw 232 and the initial distance between the outer peripheral surface of the screw nut 221 and the screw 232. When the absolute value of the difference is larger, it means that the gap between the screw 232 and the screw nut 221 is larger; the offset of the screw nut 221 can be obtained by measuring the outer peripheral surface of the screw nut 221 and the screw 232 using a laser displacement sensor.

[0071] When the friction between the lead screw nut 221 and the lead screw 232 is large, it means that the lead screw nut 221 and the lead screw 232 do not cooperate well, which in turn affects the smooth movement of the moving seat and the sliding seat 211. The friction between the lead screw nut 221 and the lead screw 232 can be measured by a torque sensor.

[0072] The center of gravity position of the sliding seat 211 has an important influence on its running smoothness. The center of gravity offset may cause the sliding seat 211 to tilt or be unevenly stressed during the sliding process. The center of gravity offset of the sliding seat 211 refers to the distance between the measured center of gravity position of the sliding seat 211 and the preset center of gravity position. The measured center of gravity position of the sliding seat 211 can be measured using a three-axis acceleration sensor.

[0073] The stability data set is .

[0074] Exemplarily, when numbering the stability data set, , It can correspond to vibration amplitude data, gap data and friction resistance data respectively.

[0075] Indicates the stability parameter number is When the corresponding vibration amplitude data, clearance data and friction resistance data, stability parameter number =1, and the corresponding set is , it means that when the stability parameter number is 1, the corresponding vibration amplitude data, clearance data and friction resistance data are .

[0076] Specifically, the vibration amplitude data refers to the vibration generated by the sliding seat 211 during the horizontal movement. The greater the vibration amplitude, the greater the deviation of the illumination direction of the light source lamp 215. The vibration amplitude data can be measured and obtained by a vibration sensor.

[0077] The gap data refers to the gap between the slide groove on the sliding seat 211 and the installation box 201. The larger the gap, the looser the fit between the installation box 201 and the sliding seat 211, and the easier it is for the sliding seat 211 to shift during sliding. The data can be obtained by using a displacement sensor to measure the gap between the sliding seat 211 and the installation box 201.

[0078] The friction resistance data refers to the friction force between the installation box 201 and the sliding seat 211. The greater the friction force, the more likely the sliding seat 211 will get stuck during sliding. The friction resistance data can be measured using a friction sensor.

[0079] A model training module is used to train a machine learning model for predicting the stability parameter number at a future moment based on the comprehensive influencing parameters of the optical shadow thickness gauge, and then obtain a stability data set corresponding to the stability parameter number;

[0080] The training method of the machine learning model for predicting the stability parameter number at a future moment includes:

[0081] The comprehensive influencing parameters of the optical shadow thickness gauge are used as the input of the multi-feature time series prediction machine learning model, and the stability parameter number at the future moment is used as the output of the multi-feature time series prediction machine learning model. The stability parameter number at the future moment is taken as the prediction target, and minimizing the sum of the prediction accuracies of all training data is taken as the training target. The multi-feature time series prediction machine learning model is trained until the sum of the prediction accuracies converges and the training is stopped.

[0082] The machine learning model is one of support vector machine regression, random forest regression or neural network regression.

[0083] The loss function value of the machine learning model is the mean square error.

[0084] Mean square error is one of the commonly used loss functions. = The model is trained with minimization as the goal, so that the machine learning model can better fit the data, thereby improving the performance and accuracy of the model.

[0085] In the loss function is the loss function value of the machine learning model, is the feature vector group number; is the number of eigenvector groups; For the The stability parameter number of the future moment corresponding to the group eigenvector, For the The stability parameter number of the future moment to which the group eigenvector actually corresponds.

[0086] Other model parameters of the machine learning model, target loss value, optimization algorithm, training set test set validation set ratio, and loss function optimization are all achieved through actual engineering implementation and continuous experimental tuning.

[0087] Methods for predicting stability parameter numbers at future times include:

[0088] Preset forecast time step , sliding step length And the sliding window length ; Use the sliding window method to convert historical comprehensive data into multiple training samples. One training sample corresponds to one label and constitutes a set of training data. Multiple sets of training data constitute a training set. The training set is used as the input of the machine learning model to predict the time step. The stability parameter number at the future moment is taken as the output, the subsequent stability parameter number of each training set is taken as the prediction target, and the prediction accuracy is taken as the training target to train the machine learning model; a machine learning model is generated that predicts the stability parameter number at the future moment according to the comprehensive influencing parameters of the optical shadow thickness gauge.

[0089] Specifically, a simple example of the sliding window method is as follows: assuming that you want to use historical comprehensive data packets 1, 2, 3, 4, 5, 6, 7 to train a time prediction model to predict the value of one time step in the future, you can use a sliding window of length 4 and a sliding step of length 1 to generate a predicted future training set and prediction target. For example, the training sets are 1, 2, 3, 4, 2, 3, 4, 5 and 3, 4, 5, 6, and the prediction targets are 5, 6 and 7.

[0090] A data processing module generates a stability influence coefficient based on the predicted stability data set, and determines a stability level based on the stability influence coefficient;

[0091] Specifically, the stability influence coefficient is generated as follows:

[0092] ;

[0093] In the formula, Indicates the stability parameter number is The corresponding stability influence coefficient is Indicates the stability parameter number is The corresponding vibration amplitude data is Indicates the stability parameter number is The corresponding gap data is Indicates the stability parameter number is The corresponding friction resistance data is , and are all weight coefficients, which are determined by technicians in this field according to specific application requirements. , and All are greater than 0;

[0094] When the sliding seat 211 moves, the greater the vibration amplitude of the sliding seat 211 , the worse the stability of the sliding seat 211 , resulting in poor stability of the light source lamp 215 , resulting in a greater deviation of the illumination direction of the light source lamp 215 .

[0095] The larger the gap between the slide groove on the sliding seat 211 and the installation box 201, the looser the fit between the installation box 201 and the sliding seat 211, and the easier it is for the sliding seat 211 to shift during sliding, resulting in poor stability of the sliding seat 211, and further poor stability of the light source lamp 215.

[0096] When the sliding seat 211 moves, the greater the friction resistance between the sliding seat 211 and the installation box 201, the more likely the sliding seat 211 will get stuck during sliding, resulting in poor stability of the sliding seat 211 and poor stability of the light source lamp 215.

[0097] It should be noted that the formulas involved in the above-mentioned are all calculated by removing dimensions and taking numerical values. They are a formula that is closest to the actual situation obtained by collecting a large amount of data and performing software simulation. The weight coefficients in the formulas and the various preset thresholds in the analysis process are set by technical personnel in this field according to actual conditions or obtained by simulating a large amount of data; the size of the weight coefficient is to quantify each parameter to obtain a specific value for subsequent comparison. The size of the weight coefficient depends on the amount of sample data and the corresponding processing coefficients initially set by technical personnel in this field for each group of sample data; as long as it does not affect the proportional relationship between the parameters and the quantized values.

[0098] The stability level is generated as follows:

[0099] The stability levels include stability level 1, stability level 2 and stability level 3;

[0100] The threshold range of the preset stability influence coefficient is , , < ;

[0101] like ,At this time, it indicates good stability, and the data processing module generates stability level one;

[0102] like ,At this time, it means that the stability is normal, and the data processing module generates the second level of stability;

[0103] like ,At this time, it indicates that the stability is poor, and the data processing module generates the third level of stability.

[0104] in, and It is determined by those skilled in the art according to specific application requirements.

[0105] The indicator light module is used to emit lights of different colors according to the stability level generated by the data processing module. The indicator light module can emit green light, yellow light and red light.

[0106] If the data processing module generates stability level one, the indicator light module emits a green light;

[0107] If the data processing module generates stability level 2, the indicator light module emits a yellow light;

[0108] If the data processing module generates stability level three, the indicator light module emits a red light.

[0109] When the indicator light module emits a green light, it indicates that the stability of the light source lamp 215 in the current device is good. The operator can use the device normally and perform regular maintenance operations according to the use of the device and the work plan.

[0110] When the indicator light module emits yellow light, it indicates that the stability of the light source lamp 215 in the current device is normal. Although the device can still work normally, the operator should pay close attention to the operating status of the device and perform preventive maintenance in a timely manner. At the same time, it is possible to consider optimizing the maintenance plan based on the operating records and historical data of the device to reduce possible failures in the future and facilitate maintaining the accuracy of the measurement results.

[0111] When the indicator light module emits a red light, it indicates that the stability of the light source lamp 215 in the current device is poor, which also indicates that the direction of the light projected by the light source lamp 215 will be offset, resulting in changes in the size, shape and position of the shadow formed behind the measured object. These changes will directly affect the measurement data of the probe 102, making the calculated object thickness inaccurate; the instability of the light source lamp 215 will also increase the difference in the results between multiple measurements, that is, the measurement repeatability will deteriorate;

[0112] When the indicator light module emits a red light, the operator should immediately stop using the device and check factors that may cause the light source lamp 215 to be unstable, confirm the problem and take corresponding maintenance measures to restore the stability of the light source lamp 215.

[0113] This control system uses machine learning technology through the model training module to train a model for predicting the stability parameter number at future moments based on historical comprehensive data; the stability data set predicted by the data processing module generates a stability influence coefficient, and determines the generated stability level, thereby continuously evaluating the operating status of the equipment to ensure the accuracy and reliability of the measurement results; and the indicator light module emits lights of different colors to provide operators with intuitive equipment status feedback; this allows the control system to predict and prevent failures in advance, which can significantly reduce equipment downtime and maintenance costs, and improve detection accuracy.

[0114] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0115] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Optical shadow thickness gauge using a through-beam probe, It is characterized in that include: two support seats (100); A roller (101) is rotatably mounted between the two support seats (100); Two probes (102) are respectively mounted on opposite sides of the two support seats (100) and are located below the roller (101); The lighting mechanism (200) comprises: An installation box (201) having an opening at the bottom and installed on the top of the two support seats (100); An illumination component (210) is slidably connected to the installation box (201) and is used to project light onto the object to be measured; A driving component (230) used for driving the illumination component (210) to move horizontally; a connecting assembly (220) used to connect the illumination assembly (210) and the driving assembly (230), wherein the connecting assembly (220) comprises a lubricating component, and the lubricating component is used to apply lubricating oil to the driving assembly (230); The lighting component (210) comprises: A sliding seat (211) having two sliding grooves (212) disposed therein, wherein the sliding grooves (212) are slidably connected to the bottom of the installation box (201); A pressing block (214) mounted on a side of the sliding seat (211); A light source lamp (215) is mounted on the bottom surface of the sliding seat (211); The driving assembly (230) comprises: A motor (231) mounted on a side of the mounting box (201); A lead screw (232) is rotatably connected to the mounting box (201), one end of which is fixedly connected to the power output shaft of the motor (231); The connection component (220) comprises: A lead screw nut (221) sleeved on the lead screw (232); A movable seat (222) is fixedly sleeved on the lead screw nut (221) and fixedly connected to the sliding seat (211); Two vertical plates (223) are both mounted on the top surface of the movable seat (222); A rotating rod (224) rotatably mounted on the two vertical plates (223); Two rollers (225) are fixedly sleeved on the rotating rod (224) and are in contact with the inner top surface of the installation box (201); A cam (226) fixedly sleeved on the rotating rod (224); The lubricating component comprises: An oil storage tank (227), mounted on the movable seat (222) and used for containing lubricating oil; Two lubricating parts (228) are respectively mounted on two ends of the lead screw nut (221), and the lubricating parts (228) include: A fixing ring (2281) fixedly connected to the end of the lead screw nut (221); A hollow ring (2282) is mounted on the inner wall of the fixing ring (2281); A plurality of oil outlet grooves (2283) are equidistantly arranged on the inner wall of the hollow ring (2282); A sponge ring (2284) is mounted on the inner wall of the hollow ring (2282) and is in contact with the lead screw (232); Two conveying members (229), both mounted on the top surface of the oil storage tank (227), and used to convey the lubricating oil in the oil storage tank (227) to the hollow ring (2282); The conveying member (229) comprises: A piston cylinder (2291) is installed in the oil storage tank (227), and a piston plate and a piston rod are slidably connected in the piston cylinder (2291); An oil extraction pipe (2292), one end of which is connected to the piston cylinder (2291), and the other end of which is connected to the oil storage tank (227); An oil outlet pipe (2293), one end of which is connected to the piston cylinder (2291), and the other end of which is connected to the hollow ring (2282); A push plate (2294) fixedly connected to the piston rod and in contact with the cam (226); A spring (2295), two ends of which are respectively connected to the push plate (2294) and the piston cylinder (2291); The optical shadow thickness gauge using a through-beam probe further comprises a cleaning mechanism (110), wherein the cleaning mechanism (110) comprises: A fan (111) is mounted on the support base (100), and a first connecting pipe (113) and a second connecting pipe (114) are mounted on an air outlet pipe (112) of the fan (111); Two first hollow seats (115) are respectively installed on opposite sides of the two support seats (100) and are respectively located directly above the two probes (102); any one of the first hollow seats (115) is fixedly connected to the second connecting pipe (114); Two first air outlet slots (116) are respectively provided on the bottom surfaces of the two first hollow seats (115) and are respectively oriented toward the two probes (102); A connecting pipe (117), two ends of which are respectively connected to the two first hollow seats (115); A second hollow seat (118) is mounted on the support seat (100) and connected to the first connecting pipe (113); The second air outlet slot (119) is formed on the second hollow seat (118) and faces the light source lamp (215).

2. The optical shadow thickness gauge using a through-beam probe according to claim 1, It is characterized in that The illumination mechanism (200) further comprises: A push switch (204) is installed on the inner wall of the installation box (201) and is used to control the start-up of the fan (111), facing the push block (214).

3. The optical shadow thickness gauge using a through-beam probe according to claim 2, It is characterized in that Also included is a control system, the control system comprising: The data acquisition module is used to collect the historical comprehensive data of the optical shadow thickness gauge, which includes the comprehensive influencing parameters and stability data set of the optical shadow thickness gauge, and convert the stability data set into a stability parameter number. The stability parameter number is , Indicates the total number of stability parameter numbers; A model training module is used to train a machine learning model for predicting the stability parameter number at a future moment based on the comprehensive influencing parameters of the optical shadow thickness gauge, and then obtain a stability data set corresponding to the stability parameter number; A data processing module generates a stability influence coefficient based on the predicted stability data set, and determines a stability level based on the stability influence coefficient; The indicator light module is used to emit lights of different colors according to the stability level generated by the data processing module.

4. The optical shadow thickness gauge using a through-beam probe according to claim 3, It is characterized in that The stability level is generated as follows: The stability levels include stability level 1, stability level 2 and stability level 3; The threshold range of the preset stability influence coefficient is , , < ; like ,At this time, it indicates good stability, and the data processing module generates stability level one; like ,At this time, it means that the stability is normal, and the data processing module generates the second level of stability; like ,At this time, it indicates that the stability is poor, and the data processing module generates the third level of stability.

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