Intelligent detection auxiliary device for photoelectric sensor and operation method thereof

Abstract

The application 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 detection auxiliary device comprises a detection auxiliary assembly, the detection auxiliary assembly comprises a visible laser emission module coaxially arranged with a transmitting photoelectric sensor emitter and used for emitting a visible calibration light beam; a calibration mark plate is provided with a calibration reference mark on the surface of the visible laser emission module, and a thermosensitive sensor array is embedded in the calibration mark plate, the thermosensitive sensor array is used for detecting the spot position of the visible calibration light beam and generating a position signal; the application adopts a visible laser calibration mode, the process is intuitive, convenient for manual checking and timely intervention and adjustment, offset point positions of the thermosensitive sensor are confirmed, corresponding automatic calibration is then performed, the process is more intelligent, the calibration precision is higher, and the tediousness and workload of manual calibration work are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection auxiliary devices, in particular to an intelligent detection auxiliary device for photoelectric sensors and an operation method thereof. BACKGROUND

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

[0003] Because of environmental changes, physical wear and tear, and electronic component aging, etc. during the use of the retro-reflective photoelectric sensor, it is necessary to calibrate the light of the retro-reflective photoelectric sensor. However, because the light emitted by the transmitter of the retro-reflective photoelectric sensor is invisible to the naked eye, when calibrating, the angle and position of the transmitter are generally adjusted, and then the light signal received by the receiver is used to confirm the accuracy of the light of the retro-reflective photoelectric sensor. However, the alignment operation is time-consuming and inefficient. Therefore, an intelligent detection auxiliary device for photoelectric sensors and an operation method thereof are proposed. SUMMARY

[0004] In order to overcome the problems in the related art, the present application provides an intelligent detection auxiliary device for photoelectric sensors and an operation method thereof, which adopts a visible laser calibration method. The process is intuitive and convenient for manual viewing and timely intervention and adjustment. The offset point of the thermal sensor is confirmed, and then corresponding automatic calibration is made. The process is more intelligent and the calibration accuracy is higher.

[0005] To achieve the above purpose, in one aspect, the present application provides an intelligent detection auxiliary device for photoelectric sensors, comprising:

[0006] A detection auxiliary assembly on the transmitter side, the detection auxiliary assembly comprising a visible laser emitting module coaxially arranged with the transmitter of the retro-reflective photoelectric sensor, for emitting a visible calibration light beam;

[0007] A calibration identification board on the receiver side, which is provided with a calibration reference mark on the surface facing the visible laser emission module, and a heat-sensitive sensor array embedded inside the calibration identification board, which is used to detect the spot position of the visible calibration light beam and generate a position signal;

[0008] A movable base, on which the receiver is fixedly installed, comprising a translation mechanism and an angle adjustment mechanism for adjusting the spatial position of the receiver;

[0009] A control system, which is electrically connected with the visible laser emission module, the heat-sensitive sensor array and the movable base, respectively, for calculating the light beam offset according to the position signal, and driving the movable base to calibrate the receiver position.

[0010] Preferably, the calibration reference mark is a crosshair mark, and the cross center point of the crosshair mark is the calibration reference point.

[0011] Preferably, the heat-sensitive sensor array is a thin-film thermistor array, which is uniformly distributed in the surrounding area of the calibration reference mark, and the detection accuracy of a single thermistor is ≤0.5℃, and the response time is ≤20ms.

[0012] Preferably, the translation mechanism comprises an X-axis translation mechanism and a Y-axis translation mechanism, both of which are driven by a linear guide cooperating with a servo motor, and the translation accuracy is ≤±0.02mm; the angle adjustment mechanism adopts a worm and gear transmission, and the angle adjustment accuracy is ≤±0.1°.

[0013] Preferably, the laser wavelength of the visible laser emission module is 650nm, and the power is 5mW, and the coaxiality with the emission beam of the light-receiving photoelectric sensor is ≤±0.01mm.

[0014] Preferably, it further comprises a mounting member, which is provided on the transmitter and the receiver, and the detection auxiliary assembly and the calibration identification board are fixed on the corresponding mounting member, and the mounting member is reversible, so as to be reversed to coaxial installation during calibration.

[0015] Preferably, the mounting member comprises:

[0016] A mounting sleeve, the outer wall of which is relatively fixed with an upper connecting plate and a lower connecting plate;

[0017] A first movable strip and a second movable strip, the outer wall of the detection auxiliary assembly and the calibration identification board is relatively fixed with a first movable strip and a second movable strip, and the first movable strip is hinged to the corresponding upper connecting plate through a hinge shaft;

[0018] A micro motor, which is installed at one end of the hinge shaft.

[0019] Preferably, the end of the second movable strip is provided with an iron block, and the lower connecting plate is embedded with a magnetic block.

[0020] Preferably, the application further comprises:

[0021] A scraping strip is arranged on the outer wall of the calibration mark plate, and the scraping strip is rotatable.

[0022] A follower is arranged, which comprises a rotating shaft, one end of the rotating shaft is fixed to the scraping strip, the outer part of the rotating shaft is provided with a volute spring, one end of the volute spring is fixed to the calibration mark plate, and the other end of the volute spring is fixed to the rotating shaft, the outer part of the rotating shaft is further provided with a pull rope, and the end of the pull rope is connected to the hinged shaft.

[0023] The application also provides an operation method of the intelligent detection auxiliary device for photoelectric sensors.

[0024] S1, turn on the visible laser emission module, so that the visible calibration light beam is coaxial with the emission light beam of the opposite photoelectric sensor and is projected to the center of the calibration reference mark of the calibration mark plate;

[0025] S2, when the light spot deviates from the center of the calibration reference mark due to the offset of the light beam, the thermal sensor array detects the temperature distribution of the light spot heating area, and generates an electrical signal containing the offset coordinates;

[0026] S3, the control system receives the electrical signal and calculates the deviation value of the center of the light spot and the center of the calibration reference mark, and if the deviation value exceeds the preset threshold, a driving instruction is generated;

[0027] 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, and the calibration is completed.

[0028] The technical scheme provided by the application can include the following beneficial effects:

[0029] 1. In the application, the visual laser calibration method is adopted, the process is intuitive and convenient for manual viewing and timely intervention and adjustment, and the offset point position of the thermal sensor is confirmed, and then corresponding automatic calibration is made, the process is more intelligent and the calibration precision is higher, and the tediousness and workload of manual calibration are reduced.

[0030] 2. In the application, the mounting part is designed to be reversible, which is reversed to coaxial installation during calibration and reversed to a non-blocking state during non-calibration, which ensures smooth calibration and does not affect the normal use of the photoelectric sensor, thereby enhancing the practicality of the equipment.

[0031] 3、The scraping strip is attached to the outer wall of the calibration mark plate, and the design of the follower enables the scraping strip to automatically wipe and reset with the turning of the first movable strip, thereby eliminating the cumbersome step of manual regular disassembly and wiping, reducing the maintenance workload, and improving the convenience of equipment maintenance.

[0032] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS

[0033] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout and in which:

[0034] Figure 1 is a schematic diagram of the overall structure of the present application;

[0035] Figure 2 is a schematic diagram of the overall structure of the present application Figure 1 in another orientation;

[0036] Figure 3 is a schematic diagram of the structure of the detection auxiliary assembly and the mounting member of the present application;

[0037] Figure 4 is a front view of the calibration mark plate and the mounting member of the present application;

[0038] Figure 5 is a schematic diagram of the structure of the calibration mark plate and the mounting member of the present application;

[0039] Figure 6 is a schematic diagram of the structure of the calibration mark plate and the follower of the present application;

[0040] Figure 7 is a schematic diagram of the cross-sectional structure of the calibration mark plate of the present application;

[0041] Figure 8 is a schematic diagram of the structure of the lower connecting plate and the first movable strip of the present application;

[0042] Figure 9 is an enlarged schematic diagram of A in the present application Figure 6 ;

[0043] Figure 10 is a schematic diagram of the sensor in the offset state;

[0044] Figure 11 is a schematic diagram of the sensor in the calibration state.

[0045] The correspondence between the reference numerals of the various figures in the drawings and the names of the components is as follows:

[0046] 1, detection auxiliary assembly; 2, calibration mark plate; 21, cross cursor mark; 22, thermal sensitive sensor array; 3, movable base;

[0047] 4, mounting; 41, mounting sleeve; 42, upper connecting plate; 43, lower connecting plate; 431, magnetic block; 44, first movable strip; 45, second movable strip; 451, iron block; 46, micro motor;

[0048] 5, scraping strip;

[0049] 6, follower; 61, pull rope; 62, rotating shaft; 63, vortex spring. DETAILED DESCRIPTION

[0050] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application. The preferred embodiments of the present application will be described in more detail below with reference to the drawings. Although the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to convey the scope of the present application to those skilled in the art completely.

[0051] It should be understood that although the terms "first", "second", "third" and the like can be used in the present application to describe various information, these information should not be limited by these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0052] The technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings.

[0053] Reference Figures 1-11As shown, the application proposes an intelligent detection auxiliary device for photoelectric sensor, which comprises a detection auxiliary assembly 1 located on one side of the transmitter a and specifically installed on the transmitter a. The detection auxiliary device comprises a visible laser emitting module coaxially arranged with the transmitter of the opposite photoelectric sensor. A red light laser with a wavelength of 650nm and a power of 5mW is selected and fixed at the front end of the transmitter of the opposite photoelectric sensor to ensure that the coaxiality of the laser beam and the sensor emitting beam is less than or equal to ±0.01mm, which is used for emitting a visible calibration light beam.

[0054] A calibration identification plate 2 is located on one side of the receiver b and specifically installed on the receiver b. The surface of the calibration identification plate 2 facing the visible laser emitting module is provided with a calibration reference mark. The calibration identification plate 2 adopts an alumina ceramic substrate with a thickness of 5mm, and the surface is printed with a white cross cursor (line width 0.2mm). A heat sensitive sensor array 22 is embedded in the calibration identification plate 2. Specifically, at least 10x10 array of thin film type thermistors (model: NTC-100K) are embedded in the substrate. The distance between adjacent thermistors is 1mm, and the coverage range is at least 10mmx10mm. The surface of the calibration identification plate facing the visible laser emitting module is provided with a cross cursor mark 21. The cross center point of the cross cursor mark 21 is the calibration reference point. The heat sensitive sensor array 22 is used for detecting the spot position of the visible calibration light beam and generating a position signal.

[0055] A movable base 3 is provided, which comprises an X-axis translation mechanism, a Y-axis translation mechanism and an angle adjusting mechanism, which are used for adjusting the spatial position of the receiver. The movable base 3 integrates X / Y-axis linear guide rails (stroke 50mm, accuracy ±0.01mm) and a rotating platform (angle range 0-360°, accuracy ±0.05°), which are driven by a 24V DC servo motor.

[0056] A control system is electrically connected with the visible laser emitting module, the heat sensitive sensor array 22 and the movable base 3, respectively, which is used for calculating the light beam offset according to the position signal, and driving the movable base 3 to calibrate the position of the receiver. The microcontroller in the control system is matched with an AD conversion module (16bit, sampling rate 1kHz) to collect the heat sensitive sensor signal, communicates with the displacement table driver through RS485 bus, and has a built-in calibration algorithm program.

[0057] The heat sensitive sensor array 22 is used for confirming the light offset position of the opposite photoelectric sensor. Then the heat sensitive sensor generates an induction signal. The receiver is installed through the movable base 3. When the light offset is detected, the receiver is calibrated and adjusted in position through the movable base 3, so as to realize the intelligent detection auxiliary calibration of the opposite photoelectric sensor.

[0058] In the application, the visible laser emitting module is coaxially arranged with the transmitter of the opposite photoelectric sensor. Figure 7As shown, the thermal sensor array 22 is a thin film thermal resistor array, uniformly distributed in the surrounding area of the calibration reference mark, the detection accuracy of a single thermal resistor is ≤±0.5℃, and the response time is ≤20ms.

[0059] The above-mentioned X-axis translation mechanism and Y-axis translation mechanism are driven by linear guide rails cooperating with servo motors, and the translation accuracy is ≤±0.02mm; the angle adjustment mechanism adopts worm and gear transmission, and the angle adjustment accuracy is ≤±0.1°.

[0060] In addition, referring to Figures 1-5 As shown, it also includes a mounting member 4, and the transmitter and the receiver are each provided with the mounting member 4, the detection auxiliary assembly 1 and the calibration mark plate 2 are fixed on the corresponding mounting member 4, and the mounting member 4 is reversible, so as to be reversely installed coaxially during calibration, and reversely installed in a non-blocking state when calibration is not needed.

[0061] Among them, the mounting member 4 includes a mounting sleeve 41, a first movable strip 44, a second movable strip 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 wall of the detection auxiliary assembly 1 and the calibration mark plate 2 is relatively fixed with the first movable strip 44 and the second movable strip 45, the first movable strip 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 arranged in front of the end of the second movable strip 45, and a magnetic block 431 is embedded on the lower connecting plate 43.

[0062] As mentioned above, the mounting sleeve 41 outside the transmitter and the receiver can be fixed by bolts, which is beneficial for subsequent disassembly, and when calibration is needed, the hinge shaft can be driven to rotate by the output end of the micro motor 46 (the initial state of the first movable strip 44 is upward deflection, and the detection auxiliary assembly 1 and the calibration mark plate 2 do not block the use of the photoelectric sensor), and then the first movable strip 44 is deflected downward, and after the iron block 451 at the end of the second movable strip 45 contacts the magnetic block 431 on the lower connecting plate 43, the two are adsorbed together, which indicates that the coaxial installation is in place, and then the calibration operation of the detection auxiliary assembly 1 can be started.

[0063] Among them, a pressure sensor can also be installed on the lower connecting plate 43, and the pressure sensor is used to feedback that the end of the second movable strip 45 contacts the lower connecting plate 43, so as to indicate that the coaxial installation is in place.

[0064] In summary, the specific use can be described as follows:

[0065] The receiver is installed on the right side of the machine of the flow line conveyor, the calibration mark plate 2 is coaxially fixed with the receiver, and the transmitter is located on the left side of the machine, and it can be seen that the laser is initially projected to the cross center;

[0066] Simulated offset: manually offset the transmitter upward by 1mm, the laser spot deviates from the cross center by 1mm, the thermal sensor array 22 detects the temperature rise in the upper area (temperature difference ≥1℃), and generates an electrical signal;

[0067] Automatic calibration: the control system calculates ΔY=+1mm, drives the Y-axis displacement table to move down by 1mm, and monitors the spot position until the temperature difference distribution is uniform and the spot returns to the center;

[0068] Calibration complete: the control system sends a calibration complete signal, and the sensor returns to normal detection mode.

[0069] Referring to Figure 2 , Figures 5-6 and Figure 9 , the intelligent detection auxiliary device further comprises:

[0070] The scraping strip 5 can be set according to the shape of the calibration identification plate 2, and can be a straight strip or an arc structure. The scraping strip 5 is attached to the outer wall of the calibration identification plate 2 and can rotate. A detachable scraping pad is provided on the scraping strip 5, which is made of high-elastic wear-resistant material. It can not only enhance the friction force during scraping and effectively remove dust, oil stains and other impurities on the outer wall of the identification plate, but also reduce the scratching of the identification plate surface through its own elastic buffer. When the scraping pad is worn or aged, it can be quickly replaced by simply detaching the structure, without the need to replace the entire scraping strip 5, which not only reduces maintenance costs, but also ensures stable scraping effect during long-term use.

[0071] The follower 6 includes a rotating shaft 62, one end of which is fixed to the scraping strip 5. A spiral spring 63 is provided outside the rotating shaft 62, one end of which is fixed to the calibration identification plate 2, and the other end of which is fixed to the rotating shaft 62. A pull rope 61 is also wound outside the rotating shaft 62, and the end of the pull rope 61 is connected to the hinged shaft.

[0072] Through the above, when the first movable strip 44 is subjected to an upward turning force in actual operation, the rotating fulcrum formed by the hinged shaft will simultaneously drive the pull rope 61 to perform a winding action. In this process, the pull rope 61 originally wound on the rotating shaft 62 is gradually released, and the tension generated when the pull rope 61 is released will drive the rotating shaft 62 to rotate in a fixed direction. Since the scraping strip 5 is rigidly connected to the rotating shaft 62, the rotation of the rotating shaft 62 will directly drive the scraping strip 5 to move synchronously, so that it can smoothly wipe along the outer wall of the calibration identification plate 2, effectively removing dust, oil stains and other impurities accumulated on the surface of the identification plate due to long-term use, avoiding the influence of these pollutants on the accurate capture of temperature signals by the thermal sensor array 22, thereby ensuring the reliability of the equipment calibration data. At the same time, the tedious steps of manual periodic disassembly and wiping are eliminated, significantly improving the convenience of equipment maintenance.

[0073] Secondly, when the first movable strip 44 is flipped up to a preset angle, the spiral spring 63 connected therewith will be twisted and deformed due to the rotation of the rotating shaft 62, and in this process, the storage of elastic potential energy is completed, and when the first movable strip 44 needs to be flipped down to reset in subsequent calibration operation, the spiral spring 63 will gradually release from the twisted state by means of the elastic restoring force of itself, the stored potential energy is converted into kinetic energy, the rotating shaft 62 is reversely rotated, and then the scraping strip 5 is automatically pulled back to the initial position, and reverse wiping can be simultaneously performed.

[0074] In addition, an infrared thermal imaging module is added to form double verification with the thermal array. When the thermal sensor detects deviation, the infrared camera is started to locate the sub-millimeter light spot, so as to solve the misjudgment problem in an extreme temperature difference environment.

[0075] The application further provides an operation method of the intelligent detection auxiliary device for photoelectric sensors, and the operation method comprises the following steps:

[0076] S1, a visible laser emission module is turned on, so that the visible calibration light beam is coaxially projected with the emission light beam of the opposite photoelectric sensor to the center of the calibration reference mark of the calibration mark plate;

[0077] S2, when the light beam deviation 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 light spot heating area to generate an electrical signal containing deviation coordinates (ΔX, ΔY);

[0078] S3, the control system receives the electrical signal and calculates the deviation value of the center of the light spot from the center of the calibration reference mark, and if the deviation value exceeds a preset threshold, a driving instruction is generated;

[0079] 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, and calibration is completed.

[0080] In step S3, the control system calculates the driving instruction by using a PID algorithm, dynamically adjusts the motor speed according to the deviation value, and ensures that the calibration process is smooth and without overshoot.

[0081] The scheme of the application has been described in detail above with reference to the drawings. In the above-described embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments. It should also be known by those skilled in the art that the actions and modules involved in the specification are not necessarily required by the application. In addition, it can be understood that the steps in the method of the embodiments of the application can be adjusted, combined and reduced in sequence according to actual needs, and the structures in the device of the embodiments of the application can be combined, divided and reduced according to actual needs.

[0082] Having described various embodiments of the application, the foregoing description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations of the described embodiments are possible in light of the above teachings. The choice of words in this document is intended to convey the best of the inventor's knowledge at the time of filing and is not intended to limit the scope of the described embodiments to the exact details shown. The embodiments described herein are chosen and described in order to best explain the principles of the application and its practical application to thereby enable others skilled in the art to best utilize the application, and to the make other improvements thereto, and are not intended as any limitation on the scope of the described embodiments.

Claims

1. An intelligent detection aid for a photosensor, characterized in that The application relates to a calibration device for a laser radar, which comprises the following parts: a detection auxiliary assembly (1) on the transmitter side, which comprises a visible laser emission module coaxially arranged with a light emitting photoelectric sensor transmitter for emitting a visible calibration light beam; a calibration identification plate (2) on the receiver side, which is provided with a calibration reference mark on the surface of the visible laser emission module, and which is internally embedded with a thermal sensor array (22) for detecting the light spot position of the visible calibration light beam and generating a position signal; a movable base (3) on which the receiver is fixedly installed, which comprises a translation mechanism and an angle adjusting mechanism for adjusting the spatial position of the receiver; and a control system which is electrically connected with the visible laser emission module, the thermal sensor array (22) and the movable base (3) respectively, and is used for calculating the light beam offset according to the position signal and driving the movable base (3) to calibrate the receiver position; further comprising a mounting member (4) which is arranged on the transmitter and the receiver, the detection auxiliary assembly (1) and the calibration identification plate (2) are fixed on the corresponding mounting member (4), and the mounting member (4) can be turned over to be coaxially installed during calibration. The mounting member (4) comprises: a mounting sleeve (41) whose outer wall is relatively fixed with an upper connecting plate (42) and a lower connecting plate (43); a first movable strip (44) and a second movable strip (45) which are relatively fixed on the outer wall of the detection auxiliary assembly (1) and the calibration identification plate (2), and the first movable strip (44) is hinged to the corresponding upper connecting plate (42) through a hinge shaft; and a micro motor (46) which is installed on one end of the hinge shaft. Further comprising: a scraping strip (5) which is arranged on the outer wall of the calibration identification plate (2) and can be rotated; and a follower (6) which comprises a rotating shaft (62) fixed on one end of the scraping strip (5), a volute spring (63) arranged on the outer part of the rotating shaft (62), one end of the volute spring (63) fixed on the calibration identification plate (2) and the other end of the volute spring (63) fixed on the rotating shaft (62), and a pull rope (61) wound on the outer part of the rotating shaft (62) and connected to the hinge shaft. The calibration reference mark is a crosshair mark (21), and the cross center point of the crosshair mark (21) is the calibration reference point. The thermal sensor array (22) is a thin film type thermal resistance array which is uniformly distributed in the surrounding area of the calibration reference mark, the detection precision of a single thermal resistance is less than or equal to 0.5 DEG C, and the response time is less than or equal to 20 ms. The translation mechanism comprises an X-axis translation mechanism and a Y-axis translation mechanism, both of which are driven by servo motors in cooperation with linear guides, and the translation precision is less than or equal to 0.02 mm; and the angle adjusting mechanism adopts worm and gear transmission, and the angle adjusting precision is less than or equal to 0.1 DEG. ​ ​ ​ ​ ​ ​ ​ 2. The intelligent detection aid for a photosensor according to claim 1, characterized in that ​ 3. The intelligent detection aid for a photosensor according to claim 1, characterized in that, ​ 4. The intelligent detection aid for photosensors of claim 1, wherein, ​ 5. The intelligent detection aid for photosensors 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 emission beam of the opposite type photoelectric sensor is less than or equal to ±0.01mm.

6. The intelligent detection aid for photosensors according to claim 1, characterized in that, The end of the second movable strip (45) is provided with an iron block (451), and the lower connecting plate (43) is embedded with a magnetic block (431).

7. A method of operating an intelligent detection aid for photoelectric sensors, using the intelligent detection aid for photoelectric sensors according to any one of claims 1 to 6, characterized in that The method comprises the following steps: S1, turning on the visible laser emission module, so that the visible calibration light beam is coaxially projected to the calibration reference mark center of the calibration mark plate with the emission beam of the opposite type photoelectric sensor; S2, when the light spot deviates from the calibration reference mark center due to the light beam deviation, the thermal sensor array (22) detects the temperature distribution of the light spot heating area, and generates an electrical signal containing the deviation coordinates; S3, the control system receives the electrical signal and calculates the deviation value of the light spot center from the calibration reference mark center, and generates a driving instruction if the deviation value exceeds a preset threshold value; 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 calibration reference mark center, and the calibration is completed.

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