Measuring device based on high-precision laser displacement meter

Abstract

The invention relates to the technical field of laser ranging, in particular to a measuring device based on a high-precision laser displacement meter. A circulating dustproof structure for circularly cleaning the irradiation part of the laser lens to reduce the influence of dust on laser radiation is assembled on the outer side; a side housing; the side shells are installed on the inner walls of the two sides of the measuring machine shell, and air exhaust grooves and air inlet grooves are formed in the inner sides, corresponding to the measuring machine shell, of the side shells in a penetrating mode. The outer side of the measuring machine shell is provided with an air blowing dustproof structure for air cooling of internal electronic elements. The bottom of the circulating dustproof structure is provided with a calibration assembly structure which is used for installation of the measuring machine shell and adjustable calibration of the measuring machine shell. The device has a circulating dustproof effect, and the transmission rollers are driven by the brushless motor, so that the flexible high-transmittance glass continuously moves in the circulating inner groove, and dust accumulation is avoided. And ultrasonic cleaning is conducted, an ultrasonic generator generates a high-frequency oscillation signal, electric energy is converted into mechanical motion through a transducer, high-frequency vibration cleaning is conducted on the flexible high-transmittance glass, and dust is effectively removed.

Description

Technical Field

[0001] The invention relates to the technical field of laser distance measurement, and in particular to a measuring device based on a high-precision laser displacement meter. Background Art

[0002] Laser ranging uses laser as light source for ranging. According to the working mode of laser, it is divided into continuous laser and pulsed laser. Gas lasers such as helium-neon, argon ion, krypton-cadmium work in a continuous output state and are used for phase laser ranging. High-precision measuring devices based on laser ranging can accurately measure distance through the work of laser generator and receiver. A Chinese patent discloses a high-precision measuring device based on laser ranging (Announcement No. CN117148317U). The patent technology discloses a high-precision measuring device based on laser ranging, and its structure includes a connecting frame, an adjustment mechanism, a laser host, and a transmission mechanism. The bottom of the connecting frame is installed on the top of the support platform. The base is provided with a dust shielding plate which can be bent, shortened or stretched during the movement of the base, which can effectively prevent the dust from falling into the adjustment frame, thereby improving the precise adjustment and control of the laser host. The guide block is smoothly guided horizontally by the slide bar to prevent the laser host from shaking during the movement and adjustment. The connecting rod is linked by rotating the rotating ring to drive the upper and lower covers to move in opposite directions, thereby opening and closing the middle end of the dustproof tube. When closed, the generator and the front end of the receiver can be sealed to prevent dust from being adsorbed on the front end of the generator and the receiver and affecting the measurement accuracy. This patented technology solves the following shortcomings of high-precision laser ranging devices when measuring distance: the high-precision measuring device needs to be fixedly supported by a bracket or handheld to measure distance, and needs to be constantly moved and adjusted during the distance measurement process for accuracy calibration. It is difficult to accurately adjust and control the moving position range manually, and the measuring device is prone to some shaking during the movement. At the same time, the laser generator and the front end of the receiver on the high-precision measuring device are prone to dust, causing the dust to affect the generation and reception of the laser, thereby reducing the accuracy of the measuring device in measuring distance.

[0003] However, in the prior art, the generator is exposed when working, and dust contamination is inevitable. It is necessary to solve the problem in the prior art that dust can be prevented when the sensor is working to prevent dust from blocking the laser sensor.

[0004] Therefore, those skilled in the art provide a measuring device based on a high-precision laser displacement meter to solve the problems raised in the above background technology. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides: A measuring device based on a high-precision laser displacement meter, comprising: Measuring housing; the outer side is equipped with a circulating dust-proof structure to cyclically clean the laser lens irradiation area to reduce the impact of dust on laser radiation; Side housing; installed on the inner walls of both sides of the measuring housing, and the side housing is provided with an exhaust slot and an air inlet slot through the inner side of the measuring housing; The outer side of the measuring housing is equipped with an air-blowing dust-proof structure for air-cooling the internal electronic components; The bottom of the circulating dustproof structure is equipped with a calibration assembly structure for mounting the measuring housing and adjusting the calibration thereof; The circulating dustproof structure comprises a circulating frame assembled on the outside of the measuring housing, a circulating inner groove is circularly provided on the inner edge of the circulating frame, and a flexible high-transmittance glass is movably provided inside the circulating inner groove to protect the measuring end of the measuring housing.

[0006] Preferably: a ventilation bottom groove is provided at the bottom of the inner circulation groove in the circulation frame corresponding to the position of the flexible high-transmittance glass; A transmission roller made of rubber is closely attached to the top surface of the flexible high-transmittance glass, and one end of the transmission roller is connected to a brushless motor.

[0007] Preferably: a cleaning groove is provided at the rear side of the circulation frame, a sealing frame is detachably sealed on the cleaning groove, a docking bucket is fixedly provided in the middle of the sealing frame, and an ultrasonic generator located inside the cleaning groove is installed inside the docking bucket.

[0008] Preferably, a water inlet pipe and a drain pipe are provided through the bottom of the sealing frame.

[0009] Preferably: a protective mirror is sealed on the inner side of the measuring housing, and a semiconductor laser for laser emission is installed inside the measuring housing, and a radiation lens is installed at the laser emission point of the semiconductor laser.

[0010] Preferably: the semiconductor laser is electrically connected to a signal processor installed inside the measuring housing, the signal processor is electrically connected to a linear CCD array module inclined at 75°, and a receiving lens installed inside the measuring housing is correspondingly arranged on one side of the linear CCD array module.

[0011] Preferably: an air blowing frame is fixedly mounted on the outer side of the side shell corresponding to the exhaust slot and is sealed and arranged on the outer side of the circulation frame.

[0012] Preferably: the air blowing dustproof structure includes an air inlet frame fixedly installed on the outside of the air inlet slot on the inner wall of the side shell, there are two air inlet frames in total, and the outsides of the two air inlet frames are sealed with a wind frame, and a blower is installed on the rear side of the wind frame.

[0013] Preferably, the exhaust end of the blower is arranged through the inner side of the wind frame, and the outer wall of the blower is provided with a mounting shell fixedly mounted on the outer wall of the wind frame.

[0014] Preferably: an internal thread ring is integrally fixed on the rear side of the mounting shell at the exhaust end of the blower, an external thread ring is provided on the spiral locking sleeve outside the internal thread ring, and the external thread ring is sealingly connected to the air duct body.

[0015] Technical effects and advantages of the present invention: The present invention has high-precision measurement capability and laser positioning measurement. The laser is focused and irradiated on the object to be measured by a semiconductor laser, and the reflected laser is collected by a receiving lens and projected onto a linear CCD array module to achieve high-precision positioning measurement, signal processing and calculation. The signal processor calculates the position of the light spot through trigonometric functions, determines the distance between the sensor and the object to be measured, and ensures the accuracy of the measurement results.

[0016] The invention has a cyclic dust-proof effect. The brushless motor drives the transmission roller to make the flexible high-transmittance glass move continuously in the cyclic inner groove to avoid dust accumulation. The ultrasonic cleaning, the ultrasonic generator generates a high-frequency oscillation signal, and the transducer converts the electrical energy into mechanical motion to perform high-frequency vibration cleaning on the flexible high-transmittance glass, effectively removing dust. The present invention has the effect of blowing and dust prevention. During air cooling and heat dissipation, the blower sends the air purified by the air purifier into the interior of the measuring casing to perform air cooling and heat dissipation on the electronic components, thereby extending the service life of the equipment and cleaning the dust. The wind force blown by the blower is not only used for heat dissipation, but also can clean the dust around the laser irradiation position along a straight line, thereby improving the accuracy of laser irradiation.

[0017] The calibration assembly structure of the present invention has multi-angle adjustment, and the annular 360° angle adjustment, vertical angle adjustment and height adjustment of the measuring casing are realized through the servo motor and the transmission rod to meet different installation environments and measurement requirements. For height adjustment, the cylinder is started to make the bottom casing box rise along the vertical limit of the inner side of the mounting frame, so as to realize the height adjustment of the measuring casing, which is convenient for measurement at high places. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a measuring device based on a high-precision laser displacement meter provided by the present application; Figure 2 It is a schematic diagram of the structure of a side surface of a measuring device based on a high-precision laser displacement meter provided by the present application; Figure 3 It is a structural schematic diagram of a measuring housing in a measuring device based on a high-precision laser displacement meter provided by the present application; Figure 4It is a schematic diagram of the cross-sectional structure of a measuring housing in a measuring device based on a high-precision laser displacement meter provided by the present application; Figure 5 It is a structural schematic diagram of a circulation frame in a measuring device based on a high-precision laser displacement meter provided by the present application; Figure 6 It is a structural schematic diagram of an ultrasonic generator in a measuring device based on a high-precision laser displacement meter provided by the present application; Figure 7 It is a structural schematic diagram of a cleaning tank in a measuring device based on a high-precision laser displacement meter provided by the present application; Figure 8 This application provides a measurement device based on a high-precision laser displacement meter. Figure 7 The structural diagram at A in the middle; Fig. 9 It is a structural schematic diagram of a circulating dustproof structure in a measuring device based on a high-precision laser displacement meter provided by the present application; Fig.10 This application provides a measurement device based on a high-precision laser displacement meter. Fig. 9 The structural diagram at B in the middle; Fig.11 It is a structural schematic diagram of a calibration assembly structure in a measuring device based on a high-precision laser displacement meter provided in the present application.

[0019] In the figure: 1. Measure the housing; 2. Circulation dustproof structure; 201. Circulation frame; 202. Ventilation bottom trough; 203. Circulation inner trough; 204. Flexible high-transmittance glass; 205. Transmission roller; 206. Brushless motor; 207. Cleaning trough; 208. Sealing frame; 209. Docking bucket; 210. Ultrasonic generator; 211. Water inlet pipe; 212. Drain pipe; 213. Blowing frame; 3. Blower dustproof structure; 301. Air inlet frame; 302. Air frame; 303. Blower; 304. Mounting shell; 305. Air duct body; 306. External thread ring; 307. Internal thread ring; 4. Calibration assembly structure; 401. Vertical shaft; 402. Shaft body; 403. Servo motor 1; 404. Ring shaft seat; 405. Bottom shell box; 406. Transmission rod; 407. Servo motor 2; 408. Vertical slide; 409. Mounting frame; 410. Mounting plate; 411. Mounting cavity; 412. Cylinder; 5. Side shell; 6. Exhaust slot; 7. Air inlet slot; 8. Protective mirror; 9. Signal processor; 10. Linear CCD array module; 11. Semiconductor laser; 12. Radiation lens; 13. Receiving lens. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The examples of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific uses.

[0021] For example, see Figure 1 to Figure 4 In this embodiment, a measuring device based on a high-precision laser displacement meter is provided, comprising: a measuring housing 1; a circulating dustproof structure 2 is installed on the outer side to cyclically clean the laser lens irradiation area to reduce the influence of dust on laser radiation; The circulating dustproof structure 2 can reduce the problem of laser being blocked by dust and diffusely reflected during laser emission, which affects the accuracy of laser displacement measurement; Side housing 5; installed on the inner walls of both sides of the measuring housing 1, and the side housing 5 is provided with an exhaust slot 6 and an air inlet slot 7 corresponding to the inner side of the measuring housing 1, the exhaust slot 6 is used to directly discharge the air exhausted from the inside of the measuring housing 1 to the outside of the measuring housing 1, and the air inlet slot 7 is used for wind to enter the inside of the measuring housing 1 to cool the internal electronic components; The outer side of the measuring housing 1 is equipped with an air-blowing dust-proof structure 3 for air-cooling the internal electronic components; The air blowing dustproof structure 3 is used to cool down the electronic components inside the measuring housing 1 by wind. At the same time, the wind inside the measuring housing 1 can blow away the dust floating in the air along the laser irradiation point of the measuring housing 1, thereby reducing the problem of full reflection caused by dust in the air between the measuring housing 1 and the measured object blocking the laser irradiation; The bottom of the circulating dustproof structure 2 is equipped with a calibration assembly structure 4 for mounting the measuring housing 1 and adjusting the calibration thereof; The calibration assembly structure 4 can be used to adjust the measuring housing 1 in a circular 360° angle and its vertical angle; The inner side of the measuring housing 1 is sealed with a protective mirror 8, which is specifically made of calcium fluoride glass. A semiconductor laser 11 for laser emission is installed inside the measuring housing 1, and the specific model of the semiconductor laser 11 is FPALP-DFB. A radiation lens 12 is installed at the laser emission point of the semiconductor laser 11, and the radiation lens 12 is specifically made of laser optical glass that is conducive to laser penetration.

[0022] The semiconductor laser 11 is electrically connected to a signal processor 9 installed inside the measuring housing 1. The signal processor 9 is specifically an FPGA chip. The signal processor 9 is electrically connected to a linear CCD array module 10 that is tilted at 75°. The linear CCD array module 10 has a plurality of CCD linear cameras for light detection inside. A receiving lens 13 installed inside the measuring housing 1 is correspondingly provided on one side of the linear CCD array module 10. The receiving lens 13 is used to receive the reflected light source of the laser irradiated on the detected object.

[0023] For example 2, please refer to Figures 5 to 8 In this embodiment, a circulating dustproof structure 2 in a measuring device based on a high-precision laser displacement meter is provided; The circulating dustproof structure 2 includes a circulating frame 201 assembled and arranged on the outside of the measuring housing 1, and a circulating inner groove 203 is opened in a circular manner on the inner edge of the circulating frame 201. The annular corners of the circulating inner groove 203 are rounded chamfers. A flexible high-transmittance glass 204 is movably arranged inside the circulating inner groove 203 to protect the measuring end of the measuring housing 1. The flexible high-transmittance glass 204 is specifically a bendable glass with a thickness of 5mm, a bendable and not easy to break glass material, high light transmittance, and a bendable and flexible characteristic; A ventilation bottom groove 202 is opened at the bottom of the circulation inner groove 203 in the circulation frame 201 corresponding to the position of the flexible high-transmittance glass 204, and the ventilation bottom groove 202 is located on the inner side of the blowing frame 213. When the wind force inside the measuring machine frame 1 passes through the blowing frame 213, the water remaining in the flexible high-transmittance glass 204 can be dried through the ventilation bottom groove 202.

[0024] A transmission roller 205 made of rubber is tightly attached to the top surface of the flexible high-transmittance glass 204, an annular groove is opened on the inner wall of the circulation frame 201 at the position of the transmission roller 205, and the transmission roller 205 is rotatably installed in the annular groove of the circulation frame 201, and a brushless motor 206 is connected to one end of the transmission roller 205, and the brushless motor 206 is fixedly arranged inside the circulation frame 201, and is used to actively drive the transmission roller 205 to rotate.

[0025] A cleaning groove 207 is provided at the rear side of the circulation frame 201, and flexible scrapers made of rubber are installed at the bottom and top of the cleaning groove 207 at the inlet and outlet gaps of the flexible high-transmittance glass 204. A sealing frame 208 is detachably sealed on the cleaning groove 207, and a docking bucket 209 is fixedly provided in the middle of the sealing frame 208. An ultrasonic generator 210 located inside the cleaning groove 207 is installed on the inside of the docking bucket 209. The ultrasonic generator 210 cooperates with the water source inside the cleaning groove 207 to remove and clean the dust traces remaining on the flexible high-transmittance glass 204 through high-frequency vibration.

[0026] A water inlet pipe 211 and a drain pipe 212 are provided at the bottom of the sealing frame 208. One end of the water inlet pipe 211 is connected to an external water pump, and a solenoid valve can be installed between the water inlet pipe 211 and the external water pump. The water inlet pipe 211 is used to cooperate with the external water pump to discharge water into the cleaning tank 207 provided in the sealing frame 208. The side shell 5 is fixedly equipped with a blower frame 213 sealed on the outside of the circulation frame 201 corresponding to the exhaust slot 6 . The blower frame 213 is sleeved on the outside of the circulation frame 201 , the measuring housing 1 and the side shell 5 .

[0027] For example 3, please refer to Figure 9-10 In this embodiment, a blast dustproof structure 3 in a measuring device based on a high-precision laser displacement meter is provided; The air blowing dustproof structure 3 includes an air inlet frame 301 fixedly installed on the outside of the air inlet slot 7 on the inner wall of the side shell 5. There are two air inlet frames 301 in total, and the two air inlet frames 301 are sealed with a wind frame 302 on the outside. The wind frame 302 cooperates with the air inlet frame 301 to seal the air inlet slot 7 of the side shell 5. A blower 303 is installed on the rear side of the wind frame 302. The blower 303 is used to compress the air on the outside of the measuring housing 1 and discharge it into the interior of the measuring housing 1.

[0028] The exhaust end of the blower 303 is set through the inner side of the wind frame 302, and the outer wall of the blower 303 is provided with a mounting shell 304 fixedly mounted on the outer wall of the wind frame 302. The mounting shell 304 is in a square cone shape and is used to fix the blower 303 on the outer wall of the wind frame 302.

[0029] An internal thread ring 307 is integrally fixed to the rear side of the mounting shell 304 at the air exhaust end of the blower 303, and an external thread ring 306 is provided on the outer spiral locking sleeve of the internal thread ring 307, and the external thread ring 306 is sealed and connected to the air duct body 305. The air duct body 305 can be assembled on the internal thread ring 307 of the mounting shell 304 through the external thread ring 306 at one end, and the other end of the air duct body 305 can be assembled to the external air filter device through the external thread ring 306 through spiral locking, so as to filter moisture and dust in the drawn air.

[0030] Example 4, please refer to Fig.11 In this embodiment, a calibration assembly structure 4 in a measuring device based on a high-precision laser displacement meter is provided; The calibration assembly structure 4 includes a shaft body 402 fixedly mounted on the outer walls of both sides of the blower frame 213, and a vertical shaft 401 is rotatably mounted on the outer side of the shaft body 402. One end of the shaft body 402 is connected to a servo motor 403 mounted inside the vertical shaft 401. The servo motor 403 is fixedly mounted on the inner wall of the vertical shaft 401, and the servo motor 403 is used to actively drive the shaft body 402 to rotate. The model of the servo motor 403 is an LH60 servo motor. The bottom end of the shaft body 402 is integrally fixedly provided with a ring shaft seat 404, the bottom of the ring shaft seat 404 is rotatably installed with a bottom shell box 405, and a servo motor 407 is installed inside the bottom shell box 405. The model of the servo motor 407 is an LH60 servo motor. The output end of the servo motor 407 rotates and penetrates the outside of the bottom shell box 405, and is fixedly equipped with a transmission rod 406, which is fixedly arranged on the inner wall of the ring shaft seat 404; The bottom corners of the bottom shell box 405 are fixed with vertical slides 408, and a mounting frame 409 is provided on the outer sliding sleeve of the vertical slide 408. The mounting frame 409 has a mounting cavity 411 formed inside, and a cylinder 412 is installed between the mounting cavity 411 and the bottom shell box 405. The cylinder 412 is specifically an SC cylinder. A mounting plate 410 is fixedly disposed at the bottom end of the mounting frame 409 .

[0031] According to the above embodiments, the working principle of the present invention is: When the measuring housing 1 measures an object, the semiconductor laser 11 is turned on, and the semiconductor laser 11 irradiates the laser through the radiation lens 12 onto the object outside the measuring housing 1 to perform positioning measurement on the object; The semiconductor laser 11 is focused onto the object to be measured by the radiation lens 12. The receiving lens 13 collects the light and projects it onto the linear CCD array module 10; the signal processor 9 calculates the position of the light spot on the linear CCD array module 10 through trigonometric functions to obtain the distance to the object; the semiconductor laser 11 emits visible red laser light to the surface of the object through the radiation lens 12, and the laser reflected by the object passes through the receiving lens 13 and is received by the CCD linear camera in the internal linear CCD array module 10. Depending on the distance, the CCD linear camera can detect the light spot at different angles. Based on the distance between the laser and the camera known at this angle, the signal processor 9 can calculate the distance between the sensor and the object to be measured, achieving high-precision measurement.

[0032] At the same time, the position of the light beam in the linear CCD array module 10 is processed by analog and digital circuits and analyzed by the signal processor 9 to calculate the corresponding output value and output the standard data signal in proportion within the analog window set by the user; Circulation dustproof structure 2; when the outer surface of the flexible high-transmittance glass 204 is contaminated by dust in the air, the brushless motor 206 is started, and the brushless motor 206 is started and rotated to drive the transmission roller 205, and the rotating transmission roller 205 continuously moves the flexible high-transmittance glass 204 inside the circulation inner groove 203, so that the flexible high-transmittance glass 204 continuously moves to the inner side of the cleaning groove 207 of the sealing frame 208; The water source is supplied to the inside of the cleaning tank 207 through the water inlet pipe 211 through the external pump body, so that the cleaning tank 207 forms a water source between the sealing frame 208 to clean the flexible high-transmittance glass 204; The ultrasonic generator 210 is a device that converts electrical energy into mechanical motion. It generates high-frequency oscillation signals, which are converted into high-frequency mechanical oscillations through the transducer. The ultrasonic generator 210 is equipped with a ceramic transducer. The ultrasonic generator 210 and the transducer cooperate to vibrate the water source at high frequency to remove dust on the flexible high-transmittance glass 204. After cleaning, the wastewater is discharged through the drain pipe 212 to the external wastewater tank for collection and treatment; It can reduce the dust or stains on the lens from blocking the laser marking on the detected object during laser radiation, and increase the high accuracy of laser displacement measurement; Blowing dustproof structure 3; when the blower 303 is used to perform air cooling and heat dissipation for the electronic components inside the measuring housing 1, the blower 303 is started. After the blower 303 is started, the external air purifier connected to the air duct body 305 supplies the air purified by the air purifier to the air inlet frame 301 connected to the wind frame 302, so that the wind passes through the air inlet frame 301 and is discharged into the measuring housing 1 along the air inlet slot 7 opened in the side shell 5, and after air cooling and heat dissipation for the electronic components inside the measuring housing 1, the wind is discharged to the inner side of the blower frame 213 along the exhaust slot 6, so that the wind is discharged to the outer side of the blower frame 213 along the flexible high-transmittance glass 204 inside the ventilation bottom slot 202 in the blower frame 213, so that the air can be dried along the flexible high-transmittance glass 204, and the dust in the air can be dispersed and cleaned along a straight line at the laser irradiation position through the wind blown out along the blower frame 213, so as to increase the accuracy of laser irradiation; The calibration assembly structure 4 can adjust the angle of the measuring housing 1 in the form of circular angle adjustment, vertical angle adjustment and height adjustment; The servo motor 2 407 is started. After the servo motor 2 407 is started, the measuring housing 1 assembled on the ring shaft seat 404 is driven by the transmission rod 406 to adjust the measuring housing 1 in a circular 360° angle, which is beneficial for the circular angle adjustment of the measuring housing 1 after installation; The vertical angle is adjusted by starting the servo motor 403, which drives the shaft body 402 to rotate. The rotating shaft body 402 drives the measuring housing 1 inside the air blowing frame 213 to adjust the vertical angle, which is beneficial for the vertical angle adjustment of the measuring housing 1 after installation. When the position of the detected area is higher, the cylinder 412 is started, and the output end of the cylinder 412 raises the bottom shell box 405 along the installation cavity 411. At the same time, the bottom shell box 405 passes through the vertical slide 408 and is vertically limited and raised along the inner side of the installation frame 409, so that the height of the installed measuring housing 1 can be adjusted.

[0033] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A measuring device based on a high-precision laser displacement meter, characterized in that: include: The measuring housing (1) is provided with a circulating dust-proof structure (2) on the outside thereof for cyclically cleaning the area irradiated by the laser lens to reduce the influence of dust on the laser radiation; A side shell (5) is installed on the inner walls of both sides of the measuring housing (1), and the side shell (5) is provided with an exhaust slot (6) and an air inlet slot (7) penetrating the inner side of the measuring housing (1); The outer side of the measuring housing (1) is equipped with an air-blowing dust-proof structure (3) for air-cooling the internal electronic components; The bottom of the circulating dustproof structure (2) is equipped with a calibration assembly structure (4) for mounting the measuring housing (1) and for adjustable calibration thereof; The circulating dustproof structure (2) comprises a circulating frame (201) mounted on the outside of the measuring housing (1), a circulating inner groove (203) being provided in a circular pattern on the inner edge of the circulating frame (201), and a flexible high-transmittance glass (204) for protecting a measuring end of the measuring housing (1) being movably provided inside the circulating inner groove (203).

2. A measuring device based on a high-precision laser displacement meter according to claim 1, characterized in that: A ventilation bottom groove (202) is provided at a position corresponding to the flexible high-transmittance glass (204) at the bottom of the circulation inner groove (203) in the circulation frame (201); A transmission roller (205) made of rubber material is closely attached to the top surface of the flexible high-transmittance glass (204), and one end of the transmission roller (205) is connected to a brushless motor (206).

3. A measuring device based on a high-precision laser displacement meter according to claim 2, characterized in that: A cleaning groove (207) is provided at the rear side of the circulation frame (201); a sealing frame (208) is detachably sealed and assembled on the cleaning groove (207); a docking bucket (209) is fixedly arranged in the middle of the sealing frame (208); an ultrasonic generator (210) located inside the cleaning groove (207) is installed inside the docking bucket (209).

4. A measuring device based on a high-precision laser displacement meter according to claim 3, characterized in that: A water inlet pipe (211) and a drain pipe (212) are provided through the bottom of the sealing frame (208).

5. The measuring device based on a high-precision laser displacement meter according to claim 1, characterized in that: The inner side surface of the measuring housing (1) is sealed with a protective mirror (8), and a semiconductor laser (11) for laser emission is installed inside the measuring housing (1), and a radiation lens (12) is installed at the laser emission point of the semiconductor laser (11).

6. The measuring device based on a high-precision laser displacement meter according to claim 5, characterized in that: The semiconductor laser (11) is electrically connected to a signal processor (9) installed inside the measuring housing (1); the signal processor (9) is electrically connected to a linear CCD array module (10) arranged at an angle (75) degrees; and a receiving lens (13) installed inside the measuring housing (1) is correspondingly arranged on one side of the linear CCD array module (10).

7. The measuring device based on a high-precision laser displacement meter according to claim 1, characterized in that: An air blowing frame (213) is fixedly mounted on the outer side of the side shell (5) corresponding to the air exhaust slot (6) and is sealed and arranged on the outer side of the circulation frame (201).

8. The measuring device based on a high-precision laser displacement meter according to claim 1, characterized in that: The air blowing dustproof structure (3) comprises an air inlet frame (301) fixedly mounted on the outside of the air inlet slot (7) on the inner wall of the side shell (5), the number of the air inlet frames (301) being two in total, and the outsides of the two air inlet frames (301) are sealedly connected to a wind frame (302), and a blower (303) is mounted on the rear side of the wind frame (302).

9. The measuring device based on a high-precision laser displacement meter according to claim 8, characterized in that: The exhaust end of the blower (303) is arranged through the inner side of the wind frame (302), and the outer wall of the blower (303) is provided with a mounting shell (304) fixedly mounted on the outer wall of the wind frame (302).

10. The measuring device based on a high-precision laser displacement meter according to claim 9, characterized in that: An internal thread ring (307) is integrally fixed to the rear side of the mounting shell (304) at the air exhaust end of the blower (303); an external thread ring (306) is provided on the spiral locking sleeve outside the internal thread ring (307); and the external thread ring (306) is sealingly connected to the air duct body (305).

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