Intelligent detection auxiliary device for photoelectric sensor and operation method of intelligent detection auxiliary device

Abstract

The invention relates to an intelligent detection auxiliary device for a photoelectric sensor and an operation method thereof, and relates to the technical field of detection auxiliary devices, the intelligent detection auxiliary device comprises a detection auxiliary assembly, the detection auxiliary assembly comprises a visible laser emission module which is coaxially arranged with a correlation type photoelectric sensor emitter and is used for emitting a visible calibration light beam; the surface, facing the visible laser emission module, of the calibration identification plate is provided with a calibration reference mark, a heat-sensitive sensor array is embedded in the calibration identification plate, and the heat-sensitive sensor array is used for detecting the light spot position of the visible calibration light beam and generating a position signal; according to the method, a visual laser calibration mode is adopted, the process is visual, manual checking and timely intervention adjustment are facilitated, the deviation point position of the heat-sensitive sensor is utilized for confirmation, then corresponding automatic calibration is carried out, the process is more intelligent, the calibration precision is higher, and meanwhile the complexity and workload of manual calibration work are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of detection auxiliary devices, and in particular to an intelligent detection auxiliary device for a photoelectric sensor and an operating method thereof. Background Art

[0002] The ‌Through-beam photoelectric sensor‌ is a non-contact sensor based on the principle of photoelectric conversion. It consists of a transmitter and a receiver. Its working principle is to emit an infrared beam through the transmitter, which passes through the object to be measured and reaches the receiver. When the object to be measured blocks the beam, the light intensity in the receiver will decrease. By measuring the change in light intensity, it is possible to determine whether there is a target object and its position, shape and other information. ‌Through-beam photoelectric sensors are now commonly used in the process of assembly line processing. They are generally installed on machines opposite to each other on both sides of the conveyor belt of the assembly line. They are mainly used for positioning and detecting assembly line products, and are often used to trigger other related processing mechanisms (such as marking mechanisms, packaging mechanisms, counting mechanisms, etc.). The transmitter and receiver are used to detect assembly line workpieces and trigger corresponding processing procedures.‌

[0003] During use, through-beam photoelectric sensors may experience changes in the environment, physical wear, and aging of electronic components. Therefore, light calibration of through-beam photoelectric sensors is required. However, because the light emitted by the transmitter of a through-beam photoelectric sensor is invisible to the naked eye, calibration is currently performed by adjusting the angle and position of the transmitter. The light signal received by the receiver is then used to confirm the light accuracy of the through-beam photoelectric sensor. However, the alignment operation is time-consuming and inefficient. Therefore, an intelligent detection auxiliary device for a photoelectric sensor and an operating method thereof are proposed. Summary of the Invention

[0004] In order to overcome the problems existing in the related art, the present invention provides an intelligent detection auxiliary device for photoelectric sensors and an operating method thereof. It adopts a visual laser calibration method, which is intuitive and convenient for manual viewing and timely intervention and adjustment. It also uses the offset point confirmation of the thermal sensor and then makes corresponding automatic calibration. The process is more intelligent and the calibration accuracy is higher.

[0005] To achieve the above objectives, the present invention provides, on one hand, an intelligent detection auxiliary device for a photoelectric sensor, comprising: A detection auxiliary component on the transmitter side, comprising a visible laser emission module coaxially arranged with the through-beam photoelectric sensor emitter for emitting a visible calibration beam; A calibration identification plate on the receiver side, wherein the surface of the calibration identification plate facing the visible laser emission module is provided with a calibration reference mark, and a thermal sensor array is embedded in the calibration identification plate, and the thermal sensor array is used to detect the spot position of the visible calibration beam and generate a position signal; A movable base, the receiver is fixedly mounted on the movable base, the movable base includes a translation mechanism and an angle adjustment mechanism for adjusting the spatial position of the receiver; A control system is electrically connected to the visible laser emission module, the thermal sensor array and the movable base, and is used to calculate the beam offset according to the position signal and drive the movable base to calibrate the receiver position.

[0006] Preferably, the calibration reference mark is a cross cursor mark, and the center point of the cross of the cross cursor mark is the calibration reference point.

[0007] Preferably, the thermal sensor array is a thin film thermistor array, which is evenly distributed in the area around the calibration reference mark, and the detection accuracy of a single thermistor is ≤0.5°C and the response time is ≤20ms.

[0008] Preferably, the translation mechanism includes an X-axis translation mechanism and a Y-axis translation mechanism, both of which are driven by linear guides and servo motors, with a translation accuracy of ≤±0.02mm; the angle adjustment mechanism adopts a worm gear transmission, with an angle adjustment accuracy of ≤±0.1°.

[0009] Preferably, the laser wavelength of the visible laser emission module is 650 nm, the power is 5 mW, and the coaxiality with the light beam emitted by the through-beam photoelectric sensor is ≤±0.01 mm.

[0010] Preferably, a mounting piece is further included. Both the transmitter and the receiver are provided with a mounting piece. The detection auxiliary component and the calibration identification plate are fixed on the corresponding mounting piece. The mounting piece can be flipped so as to be flipped to a coaxial installation during calibration.

[0011] Preferably, the mounting member includes: An installation sleeve, wherein an upper connecting plate and a lower connecting plate are relatively fixed to the outer wall of the installation sleeve; A first movable bar and a second movable bar are fixed relatively to the outer walls of the detection auxiliary component and the calibration identification plate, and the first movable bar is hinged to the corresponding upper connecting plate through a hinge shaft; The micro motor is installed at one end of the hinge shaft.

[0012] Preferably, an iron block is installed in front of the end of the second movable bar, and a magnetic block is embedded on the lower connecting plate.

[0013] Preferably, it also includes: A scraping strip, the scraping strip is arranged in contact with the outer wall of the calibration identification plate and is rotatable; The follower includes a rotating shaft, one end of which is fixed to the scraping strip, a vortex spring is provided on the outside of the rotating shaft, one end of the vortex spring is fixed to the calibration identification plate, and the other end of the vortex spring is fixed to the rotating shaft, and a pull rope is also wound on the outside of the rotating shaft, and the end of the pull rope is connected to the hinge shaft.

[0014] Another aspect of the present invention provides a method for operating an intelligent detection auxiliary device for a photoelectric sensor, which uses the intelligent detection auxiliary device for a photoelectric sensor described above and includes the following steps: S1. Turn on the visible laser emission module so that the visible calibration beam and the emission beam of the through-beam photoelectric sensor are coaxially projected onto the center of the calibration reference mark on the calibration mark plate; S2. When the light beam deflects and causes the light spot to deviate from the center of the calibration reference mark, the thermal sensor array detects the temperature distribution of the heated area of ​​the light spot and generates an electrical signal containing the offset coordinates; S3, the control system receives the electrical signal and calculates the deviation between the center of the light spot and the center of the calibration reference mark. If the deviation exceeds a preset threshold, a drive instruction is generated; S4. The movable base adjusts the position and angle of the receiver according to the driving instruction until the light spot returns to the center of the calibration reference mark, completing the calibration.

[0015] The technical solution provided by the present invention can have the following beneficial effects: 1. In the present invention, a visual laser calibration method is adopted, which is intuitive and convenient for manual inspection and timely intervention adjustment. The offset point of the thermal sensor is used to confirm and then make corresponding automatic calibration. The process is more intelligent and the calibration accuracy is higher, while reducing the tediousness and workload of manual calibration.

[0016] 2. In the present invention, the mounting piece is designed to be flippable. It can be flipped to a coaxial mounting position during calibration and flipped to a non-blocking position when not calibrating. This ensures that calibration proceeds smoothly without affecting the normal use of the photoelectric sensor, thereby enhancing the practicality of the equipment.

[0017] 3. In the present invention, the scraping strip is arranged to fit the outer wall of the calibration identification plate, and the design of the follower enables the scraping strip to automatically wipe and reset as the first movable strip flips, eliminating the tedious steps of manual regular disassembly and wiping, reducing maintenance workload, and improving the convenience of equipment maintenance.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This invention Figure 1 Schematic diagram of the overall structure from another perspective; Figure 3 It is a schematic structural diagram of the detection auxiliary component and the mounting part of the present invention; Figure 4 is a front view of the calibration identification plate and the mounting member of the present invention; Figure 5 It is a structural schematic diagram of the calibration identification plate and the mounting member of the present invention; Figure 6 It is a structural schematic diagram of the calibration identification plate and the follower of the present invention; Figure 7 It is a schematic cross-sectional view of the calibration identification plate of the present invention; Figure 8 It is a structural schematic diagram of the lower connecting plate and the first movable bar of the present invention; Figure 9 This invention Figure 6 A is an enlarged schematic diagram; Figure 10 It is a schematic diagram of the sensor in the offset state; Figure 11 This is a schematic diagram of the sensor in calibration status.

[0021] The corresponding relationship between the illustration labels and component names in the figure is as follows: 1. Detection auxiliary components; 2. Calibration identification plate; 21. Cross cursor identification; 22. Thermal sensor array; 3. Movable base; 4. Mounting piece; 41. Mounting sleeve; 42. Upper connecting plate; 43. Lower connecting plate; 431. Magnetic block; 44. First movable bar; 45. Second movable bar; 451. Iron block; 46. Micro motor; 5. Scrape strips; 6. Follower; 61. Pull rope; 62. Rotating shaft; 63. Vortex spring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary persons in this field without making creative work are within the scope of protection of the present invention. The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described here. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to be able to fully convey the scope of the present invention to those skilled in the art.

[0023] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0024] The technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] See Figures 1-11 As shown, the present invention proposes an intelligent detection auxiliary device for a photoelectric sensor, including a detection auxiliary component 1, which is located on one side of the emitter a and is specifically installed on the emitter a. The detection auxiliary device includes a visible laser emission module coaxially arranged with the emitter of the through-beam photoelectric sensor. A red laser with a wavelength of 650nm and a power of 5mW is selected and fixed to the front end of the through-beam photoelectric sensor emitter to ensure that the coaxiality of the laser beam and the sensor emission beam is ≤±0.01mm, and is used to emit a visible calibration beam; A calibration identification plate 2 is located on the side of receiver b and is specifically mounted on receiver b. The surface of the calibration identification plate 2 facing the visible laser emission module is provided with a calibration reference mark. The calibration identification plate 2 uses a 5mm thick alumina ceramic substrate with a white crosshair (line width 0.2mm) printed on the surface. A thermal sensor array 22 is embedded within the calibration identification plate 2. Specifically, a thin-film thermistor array 22 of at least 10×10 is embedded within the substrate. Adjacent thermistors are spaced 1mm apart, covering an area of ​​at least 10mm×10mm. A crosshair mark 21 is provided on the surface of the calibration identification plate facing the visible laser emission module. The center point of the crosshair mark 21 is the calibration reference point. The thermal sensor array 22 is used to detect the spot position of the visible calibration beam and generate a position signal. Movable base 3, which includes an X-axis translation mechanism, a Y-axis translation mechanism, and an angle adjustment mechanism for adjusting the spatial position of the receiver. It integrates X / Y-axis linear guides (stroke 50mm, accuracy ±0.01mm) and a rotating platform (angle range 0-360°, accuracy ±0.05°), and is driven by a 24V DC servo motor; The control system is electrically connected to the visible laser emission module, the thermal sensor array 22, and the movable base 3. It is used to calculate the beam offset based on the position signal and drive the movable base 3 to calibrate the receiver position. The microcontroller is equipped with an AD conversion module (16 bits, sampling rate 1kHz) to collect the thermal sensor signals, communicate with the translation stage driver through the RS485 bus, and has a built-in calibration algorithm program.

[0026] The thermal sensor array 22 is used to confirm the light offset position of the through-beam photoelectric sensor, and then the thermal sensor generates a sensing signal, and the receiver is installed through the movable base 3. When the light offset is detected, the receiver is calibrated and adjusted through the movable base 3 to realize the intelligent detection and auxiliary calibration of the through-beam photoelectric sensor.

[0027] Among them, see Figure 7 As shown, the thermal sensor array 22 is a thin film thermistor array, which is evenly distributed in the area around the calibration reference mark. The detection accuracy of a single thermistor is ≤±0.5°C and the response time is ≤20ms.

[0028] The above-mentioned X-axis translation mechanism and Y-axis translation mechanism both use linear guides and servo motors to drive, with a translation accuracy of ≤±0.02mm; the angle adjustment mechanism uses worm gear transmission, with an angle adjustment accuracy of ≤±0.1°.

[0029] In addition, see Figure 1-Figure 5As shown, it also includes a mounting part 4, which is provided on both the transmitter and the receiver. The detection auxiliary component 1 and the calibration identification plate 2 are fixed on the corresponding mounting part 4, and the mounting part 4 can be flipped so that it can be flipped to a coaxial installation during calibration, and can be flipped to a non-blocking state when calibration is not required.

[0030] Among them, the mounting part 4 includes a mounting sleeve 41, a first movable bar 44, a second movable bar 45 and a micro motor 46. The outer wall of the mounting sleeve 41 is relatively fixed with an upper connecting plate 42 and a lower connecting plate 43. The outer walls of the detection auxiliary component 1 and the calibration identification plate 2 are relatively fixed with a first movable bar 44 and a second movable bar 45. The first movable bar 44 is hinged to the corresponding upper connecting plate 42 through a hinge shaft. The micro motor 46 is installed at one end of the hinge shaft, and an iron block 451 is installed in front of the end of the second movable bar 45. A magnetic block 431 is embedded in the lower connecting plate 43.

[0031] As mentioned above, the mounting sleeves 41 outside the transmitter and receiver can be fixed with bolts, which is convenient for subsequent disassembly and assembly. When calibration is required, the output end of the micro motor 46 can be used to drive the hinge shaft to rotate (the first movable bar 44 is in an upward deflection state in the initial state, and the detection auxiliary component 1 and the calibration identification plate 2 do not block the use of the photoelectric sensor), thereby driving the first movable bar 44 to deflect downward. After the iron block 451 at the end of the second movable bar 45 contacts the magnetic block 431 on the lower connecting plate 43, the two are adsorbed together, indicating that the coaxial installation is in place, and then the detection auxiliary component 1 can be started to perform the calibration operation.

[0032] A pressure sensor may also be installed on the lower connecting plate 43 , and the pressure sensor is used to feedback that the end of the second movable bar 45 contacts the lower connecting plate 43 , indicating that the coaxial installation is in place.

[0033] Based on the above, the specific usage can be explained as follows: The receiver is installed on the right side of the conveyor belt of the assembly line. The calibration mark plate 2 is fixed coaxially with the receiver. The transmitter is located on the left side of the machine. It can be seen that the laser is initially projected to the center of the cross. Simulated offset: The emitter is manually offset upward by 1 mm. The laser spot is seen to deviate 1 mm above the center of the cross. The thermal sensor array 22 detects a temperature increase in the upper area (temperature difference ≥ 1°C) and generates an electrical signal. Automatic calibration: The control system calculates ΔY = +1mm and drives the Y-axis translation stage downward by 1mm while monitoring the position of the light spot until the temperature difference is evenly distributed and the light spot returns to the center. Calibration completed: The control system sends a calibration completion signal and the sensor returns to normal detection mode.

[0034] See Figure 2 、 Figure 5-Figure 6 as well as Figure 9As shown, the intelligent detection auxiliary device also includes: The scraping strip 5 can be configured according to the shape of the calibration mark plate 2. The scraping strip 5 can be straight or curved. The scraping strip 5 is arranged to fit the outer wall of the calibration mark plate 2 and is rotatable. A detachable scraping pad is provided on the scraping strip 5. The scraping pad is made of a highly elastic and wear-resistant material. This not only enhances the friction during scraping, effectively removing dust, oil, and other impurities from the outer wall of the mark plate, but also reduces scratches on the mark plate surface through its own elastic buffering. When the scraping pad becomes worn or aged, it can be quickly replaced through a simple disassembly structure, without having to replace the entire scraping strip 5. This not only reduces maintenance costs but also ensures a stable scraping effect during long-term use. The follower 6 includes a rotating shaft 62, one end of which is fixed to the scraping strip 5, a vortex spring 63 is provided on the outside of the rotating shaft 62, one end of the vortex spring 63 is fixed to the calibration identification plate 2, and the other end of the vortex spring 63 is fixed to the rotating shaft 62, and a pull rope 61 is also wound on the outside of the rotating shaft 62, and the end of the pull rope 61 is connected to the hinge shaft.

[0035] Through the above, in actual operation, when an upward flipping force is applied to the first movable bar 44, the rotating fulcrum formed by the hinge shaft will synchronously drive the pull rope 61 to reel in. During this process, the pull rope 61 originally wound on the rotating shaft 62 is gradually released, and the tension generated by the pull rope 61 when released will drive the rotating shaft 62 to rotate along a fixed direction. Since the scraping bar 5 maintains a rigid connection with the rotating shaft 62, the rotation of the rotating shaft 62 will directly drive the scraping bar 5 to move synchronously, so that it can be wiped smoothly along the outer wall of the calibration identification plate 2, which can effectively remove dust, oil and other impurities accumulated on the surface of the identification plate due to long-term use, and prevent these pollutants from affecting the accurate capture of temperature signals by the thermal sensor array 22, thereby ensuring the reliability of the equipment calibration data, while eliminating the tedious steps of manual regular disassembly and wiping, and significantly improving the convenience of equipment maintenance.

[0036] Secondly, when the first movable bar 44 flips upward to a preset angle, the vortex spring 63 connected to it will be twisted and deformed due to the rotation of the rotating shaft 62, and the elastic potential energy is stored in this process. When the first movable bar 44 needs to be flipped downward and reset during the subsequent calibration operation, the vortex spring 63 will gradually release from the twisted state with the help of its own elastic restoring force, and its stored potential energy will be converted into kinetic energy, driving the rotating shaft 62 to rotate in the opposite direction, and then automatically pulling the scraping strip 5 back to the initial position, and reverse wiping can be performed at the same time.

[0037] In addition, an infrared thermal imaging module is added to provide dual verification with the thermal array. When the thermal sensor detects a deviation, the infrared camera is activated to perform submillimeter spot positioning, eliminating the problem of misjudgment in extreme temperature environments.

[0038] The present invention also provides an operating method of an intelligent detection auxiliary device for a photoelectric sensor, which uses the above-mentioned intelligent detection auxiliary device for a photoelectric sensor and includes the following steps: S1. Turn on the visible laser emission module so that the visible calibration beam and the emission beam of the through-beam photoelectric sensor are coaxially projected onto the center of the calibration reference mark on the calibration mark plate; S2. When the light beam deflects and causes the light spot to deviate from the center of the calibration reference mark, the thermal sensor array 22 detects the temperature distribution of the heated area of ​​the light spot and generates an electrical signal containing the offset coordinates (ΔX, ΔY); S3, the control system receives the electrical signal and calculates the deviation between the center of the light spot and the center of the calibration reference mark. If the deviation exceeds a preset threshold, a drive instruction is generated; S4. The movable base 3 adjusts the position and angle of the receiver according to the driving instruction until the light spot returns to the center of the calibration reference mark, completing the calibration.

[0039] In step S3, the control system uses the PID algorithm to calculate the drive command and dynamically adjusts the motor speed according to the deviation value to ensure that the calibration process is smooth and without overshoot.

[0040] The scheme of the present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of each embodiment has its own focus. For parts not described in detail in a particular embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules mentioned in this description are not necessarily required for the present invention. In addition, it is understood that the steps in the method of the embodiment of the present invention can be adjusted in order, combined, or deleted according to actual needs, and the structures in the device of the embodiment of the present invention can be combined, divided, or deleted according to actual needs.

[0041] While various embodiments of the present invention have been described above, the above descriptions are intended to be illustrative, non-exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An intelligent detection auxiliary device for a photoelectric sensor, characterized in that: include: A detection auxiliary component (1) on the transmitter side, the detection auxiliary component (1) comprising a visible laser emission module coaxially arranged with the through-beam photoelectric sensor emitter, for emitting a visible calibration light beam; A calibration identification plate (2) on the receiver side, wherein a calibration reference mark is provided on a surface of the calibration identification plate (2) facing the visible laser emission module, and a thermal sensor array (22) is embedded in the calibration identification plate (2), and the thermal sensor array (22) is used to detect the spot position of the visible calibration light beam and generate a position signal; A movable base (3), the receiver is fixedly mounted on the movable base (3), and the movable base includes a translation mechanism and an angle adjustment mechanism for adjusting the spatial position of the receiver; A control system is electrically connected to the visible laser emission module, the thermal sensor array (22) and the movable base (3) respectively, and is used to calculate the beam offset according to the position signal and drive the movable base (3) to calibrate the receiver position.

2. The intelligent detection auxiliary device for photoelectric sensors according to claim 1, characterized in that: The calibration reference mark is a cross cursor mark (21), and the center point of the cross of the cross cursor mark (21) is the calibration reference point.

3. The intelligent detection auxiliary device for photoelectric sensors according to claim 1, characterized in that: The thermal sensor array (22) is a thin film thermistor array, which is evenly distributed in the area surrounding the calibration reference mark. The detection accuracy of a single thermistor is ≤±0.5°C, and the response time is ≤20ms.

4. The intelligent detection auxiliary device for photoelectric sensors according to claim 1, characterized in that: The translation mechanism includes an X-axis translation mechanism and a Y-axis translation mechanism, both of which are driven by linear guides and servo motors, with a translation accuracy of ≤±0.02mm; the angle adjustment mechanism adopts worm gear transmission, with an angle adjustment accuracy of ≤±0.1°.

5. The intelligent detection auxiliary device for photoelectric sensors according to claim 1, characterized in that: The laser wavelength of the visible laser emission module is 650nm, the power is 5mW, and the coaxiality with the light beam emitted by the through-beam photoelectric sensor is ≤±0.01mm.

6. The intelligent detection auxiliary device for photoelectric sensors according to claim 1, characterized in that: It also includes a mounting member (4), the transmitter and the receiver are both provided with a mounting member (4), the detection auxiliary component (1) and the calibration identification plate (2) are fixed on the corresponding mounting member (4), and the mounting member (4) can be flipped so as to be flipped to a coaxial installation during calibration.

7. The intelligent detection auxiliary device for photoelectric sensors according to claim 6, characterized in that: The mounting member (4) comprises: A mounting sleeve (41), wherein an upper connecting plate (42) and a lower connecting plate (43) are relatively fixed to the outer wall of the mounting sleeve (41); A first movable bar (44) and a second movable bar (45), the outer walls of the detection auxiliary component (1) and the calibration identification plate (2) are relatively fixed with the first movable bar (44) and the second movable bar (45), and the first movable bar (44) is hinged to the corresponding upper connecting plate (42) through a hinge shaft; A micro motor (46) is mounted on one end of the hinge shaft.

8. The intelligent detection auxiliary device for photoelectric sensors according to claim 7, characterized in that: An iron block (451) is installed in front of the end of the second movable bar (45), and a magnetic block (431) is embedded on the lower connecting plate (43).

9. The intelligent detection auxiliary device for photoelectric sensors according to claim 1, characterized in that: Also includes: A scraping strip (5), wherein the scraping strip (5) is arranged in contact with the outer wall of the calibration identification plate (2), and the scraping strip (5) is rotatable; A follower (6), the follower (6) comprising a rotating shaft (62), one end of the rotating shaft (62) being fixed to the scraping strip (5), a vortex spring (63) being provided on the outside of the rotating shaft (62), one end of the vortex spring (63) being fixed to the calibration identification plate (2), and the other end of the vortex spring (63) being fixed to the rotating shaft (62), a pull rope (61) being wound on the outside of the rotating shaft (62), and an end of the pull rope (61) being connected to the hinge shaft.

10. An operating method of an intelligent detection auxiliary device for a photoelectric sensor, using the intelligent detection auxiliary device for a photoelectric sensor according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Turn on the visible laser emission module so that the visible calibration beam and the emission beam of the through-beam photoelectric sensor are coaxially projected onto the center of the calibration reference mark on the calibration mark plate; S2, when the light beam deflects and causes the light spot to deviate from the center of the calibration reference mark, the thermal sensor array (22) detects the temperature distribution of the heated area of ​​the light spot and generates an electrical signal containing the offset coordinates; S3, the control system receives the electrical signal and calculates the deviation between the center of the light spot and the center of the calibration reference mark. If the deviation exceeds a preset threshold, a drive instruction is generated; S4. The movable base (3) adjusts the position and angle of the receiver according to the driving instruction until the light spot returns to the center of the calibration reference mark, completing the calibration.

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