Ultra-high precision multi-purpose synchronous laser measuring instrument and working method thereof

Abstract

An ultra-high precision multi-purpose synchronous laser measuring instrument, characterized in that it comprises: a microprocessor (1), wherein the microprocessor (1) is connected to a logic algorithm processing system (2) via a wire, wherein the logic algorithm processing system (2) is connected to a memory (15) via a wire, wherein the microprocessor (1) is connected to a display system (13) via a wire, wherein the display system (13) is connected to a liquid crystal display screen (14) via a wire, wherein the microprocessor (1) is connected to a high-frequency signal generator (3) via a wire, wherein the upper end of the high-frequency signal generator (3) is connected to a high-frequency signal modulator (4) via a wire, wherein the high-frequency signal modulator (4) is connected to an emission driver (5) via a wire, wherein the emission driver (5) is connected to a laser emitter (6) via a wire, wherein the laser emitter (6) is connected to an optical collimation system (7) via a wire.

Description

Technical Field

[0001] The invention belongs to the technical field of near-field ultra-high precision measuring devices, and in particular relates to an ultra-high precision multi-purpose synchronous laser measuring instrument and a working method thereof. Background Art

[0002] Ultra-high precision laser measuring instrument is an instrument that uses laser to accurately measure close-range or near-field targets (1-100mm), also known as laser ranging.

[0003] When working, the measuring instrument emits a beam of finely focused high-frequency modulated laser to the target. The laser signal reflected by the target is then received by the photoelectric element and input into the microprocessor. The depth distance and change of the target are calculated by mixing the transmitted and received signals. Based on its ultra-high frequency laser modulation (100GHz), signal mixing and demodulation processing, and logic algorithms, the system can measure and calculate the precise length, height, or depth of the target and obtain ultra-high measurement accuracy (<10 microns).

[0004] At present, the equipment used in our process is all mechanical equipment, which has low accuracy, inaccurate measurement, large size, heavy weight, and is not easy to carry. It also has high power consumption and low integration. It is not suitable for use with precision equipment and laser processing equipment, let alone synchronous measurement in the field of small precision device processing.

[0005] In order to overcome the above technical problems, after a long period of research, from a practical point of view, the applicant believes that it is of great practical significance to disclose an ultra-high precision multi-purpose synchronous laser measuring instrument and its working method. Summary of the invention

[0006] The object of the present invention is to provide an ultra-high precision multi-purpose synchronous laser measuring instrument and a working method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An ultra-high precision multi-purpose synchronous laser measuring instrument and a working method thereof, a microprocessor, the microprocessor is connected to a logic algorithm processing system through a wire, the logic algorithm processing system is connected to a memory through a wire, the microprocessor is connected to a display system through a wire, the display system is connected to a liquid crystal display screen through a wire, the microprocessor is connected to a high-frequency signal generator through a wire, the upper end of the high-frequency signal generator is connected to a high-frequency signal modulator through a wire, the high-frequency signal modulator is connected to an emission driver through a wire, the emission driver is connected to a laser emitter through a wire, the laser emitter is connected to an optical collimation system through a wire, and the lower end of the high-frequency signal generator is connected to a high-frequency signal modulator through a wire. The high-frequency signal mixing processor is connected to the high-frequency signal mixing processor through a wire, the right end of the high-frequency signal mixing processor is connected to the microprocessor through a wire, the left end of the high-frequency signal mixing processor is connected to the high-frequency signal amplifier through a wire, the left end of the high-frequency signal amplifier is connected to the avalanche photodetector through a wire, the avalanche photodetector is respectively connected to the optical receiving focuser and the temperature sensor through wires, the temperature sensor is connected to the microprocessor through a wire, the microprocessor is connected to the power supply through a wire, the power supply is connected to the battery management system, the battery management system is connected to the detector bias high-voltage boost module through a wire, and the detector bias high-voltage boost module is connected to the transmitter constant current module through a wire.

[0009] Preferably, a first refractor is provided on the left side of the optical collimation system, a second refractor is provided on the left side of the optical receiving focuser, the second refractor is located directly below the first refractor, a focusing convex mirror is provided below the second refractor, a laser focusing body is provided below the focusing convex mirror, the focusing convex mirror and the laser focusing body are connected via a detection beam, a camera is provided above the first refractor, and the camera is connected to the first refractor via a main optical axis.

[0010] Preferably, the microprocessor sends a start measurement signal to the high-frequency signal generator, the high-frequency signal generator sends an instruction to the high-frequency signal modulator, the high-frequency signal modulator then sends a driving instruction to the emission driver, the emission driver drives the laser emitter to emit laser and adjusts it through the optical collimation system.

[0011] Preferably, the laser beam adjusted by the optical collimation system enters the first refractor, which refracts the laser beam and then enters the second refractor again. The detection beam after the second refractor is directly projected onto the laser focusing body, and another part of the laser is reflected by the second refractor and enters the optical receiving focuser.

[0012] Preferably, the laser signal generated by the optical receiving focuser is transmitted to the avalanche photodetector, and the laser signal is amplified by a high-frequency signal amplifier after passing through the avalanche photodetector, and then processed by a high-frequency signal mixing processor, and finally input into the microprocessor. At the same time, its temperature signal is transmitted to the microprocessor through a temperature sensor.

[0013] Preferably, the microprocessor outputs the signal to its internal main processing chip and programmable logic chip for joint processing, and then finally displays its measurement results on the liquid crystal display screen through the display system. At the same time, the measured data is automatically stored in the memory after being processed by the logic algorithm processing system.

[0014] Compared with the prior art, the present invention provides an ultra-high precision multi-purpose synchronous laser measuring instrument and a working method thereof, which has the following beneficial effects:

[0015] This new ultra-high precision near-field multi-purpose laser measuring instrument is the top part of the laser ranging technology system. It has the characteristics of ultra-high measurement accuracy, small size, light weight, low power consumption, high integration, etc. It can be widely combined with various precision machinery and laser processing equipment, and applied to the synchronous measurement in the field of small precision device processing, ensuring process accuracy and quality, filling the gap that other measurement technologies are difficult to achieve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure and working principle of the ultra-high precision multi-purpose synchronous laser measuring instrument and its working method proposed by the present invention.

[0018] In the figure: microprocessor 1, logic algorithm processing system 2, high-frequency signal generator 3, high-frequency signal modulator 4, transmitting driver 5, laser transmitter 6, optical collimation system 7, high-frequency signal mixing processor 8, high-frequency signal amplifier 9, avalanche photodetector 10, optical receiving focus 11, temperature sensor 12, display system 13, liquid crystal display 14, memory 15, battery management system 16, detector bias high-voltage boost module 17, transmitter constant current module 18, first refractor 20, second refractor 21, focusing convex mirror 22, laser focusing body 23, detection beam 24, main optical axis 25, camera 26. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1 , the present invention provides a technical solution:

[0023] An ultra-high precision multi-purpose synchronous laser measuring instrument and a working method thereof, a microprocessor 1, wherein the microprocessor 1 is connected to a logic algorithm processing system 2 through a wire, the logic algorithm processing system 2 is connected to a memory 15 through a wire, the microprocessor 1 is connected to a display system 13 through a wire, the display system 13 is connected to a liquid crystal display screen 14 through a wire, the microprocessor 1 is connected to a high-frequency signal generator 3 through a wire, the upper end of the high-frequency signal generator 3 is connected to a high-frequency signal modulator 4 through a wire, the high-frequency signal modulator 4 is connected to an emission driver 5 through a wire, the emission driver 5 is connected to a laser emitter 6 through a wire, the laser emitter 6 is connected to an optical collimation system 7 through a wire, and the lower end of the high-frequency signal generator 3 is connected to a high-frequency signal modulator 4 through a wire. The line is connected to a high-frequency signal mixing processor 8, the right end of the high-frequency signal mixing processor 8 is connected to a microprocessor 1 through a wire, the left end of the high-frequency signal mixing processor 8 is connected to a high-frequency signal amplifier 9 through a wire, the left end of the high-frequency signal amplifier 9 is connected to an avalanche photodetector 10 through a wire, the avalanche photodetector 10 is respectively connected to an optical receiving focuser 11 and a temperature sensor 12 through wires, the temperature sensor 12 is connected to the microprocessor 1 through a wire, the microprocessor 1 is connected to a power supply through a wire, the power supply is connected to a battery management system 16, the battery management system 16 is connected to a detector bias high-voltage boost module 17 through a wire, and the detector bias high-voltage boost module 17 is connected to a transmitter constant current module 18 through a wire.

[0024] In a preferred embodiment of the present invention, a first refractor 20 is provided on the left side of the optical collimation system 7, a second refractor 21 is provided on the left side of the optical receiving focuser 11, the second refractor 21 is located directly below the first refractor 20, a focusing convex mirror 22 is provided below the second refractor 21, a laser focusing body 23 is provided below the focusing convex mirror 22, the focusing convex mirror 22 and the laser focusing body 23 are connected via a detection beam 24, a camera 26 is provided above the first refractor 20, and the camera 26 is connected to the first refractor 20 via a main optical axis 25.

[0025] In a preferred embodiment of the present invention, the microprocessor 1 sends a measurement start signal to the high-frequency signal generator 3, the high-frequency signal generator 3 gives an instruction to the high-frequency signal modulator 4, the high-frequency signal modulator 4 then gives a driving instruction to the emission driver 5, and the emission driver 5 drives the laser emitter 6 to emit laser and adjusts it through the optical collimation system 7.

[0026] In a preferred embodiment of the present invention, the laser beam adjusted by the optical collimation system 7 enters the first refractor 20, and the first refractor 20 refracts the laser beam and then enters the second refractor 21 again. The detection beam 24 after passing through the second refractor 21 is directly projected onto the laser focusing body 23, and another part of the laser beam is reflected by the second refractor 21 and then enters the optical receiving focuser 11.

[0027] In a preferred embodiment of the present invention, the laser signal generated by the optical receiving focuser 11 is transmitted to the avalanche photodetector 10, and the laser signal is amplified by the high-frequency signal amplifier 9 after passing through the avalanche photodetector 10, and then processed by the high-frequency signal mixing processor 8, and finally input into the microprocessor 1. At the same time, its temperature signal is transmitted to the microprocessor 1 through the temperature sensor 12.

[0028] In a preferred embodiment of the present invention, the microprocessor 1 outputs the signal to its internal main processing chip and programmable logic chip for joint processing, and then finally displays its measurement results on the LCD screen 14 through the display system 13. At the same time, the measured data is automatically stored in the memory 15 after being processed by the logic algorithm processing system 2.

[0029] The working principle and use process of the present invention are as follows:

[0030] Laser beam emission process: When the measurement starts, the microprocessor 1 sends a start measurement signal to the high-frequency signal generator 3, the high-frequency signal generator 3 gives an instruction to the high-frequency signal modulator 4, and the high-frequency signal modulator 4 gives a driving instruction to the emission driver 5. The emission driver 5 drives the laser emitter 6 to emit laser and adjusts it through the optical collimation system 7.

[0031] Laser beam transmission process: the laser beam adjusted by the optical collimation system 7 enters the first refractor 20, and enters the second refractor 21 again after passing through the first refractor 20. The detection beam 24 after passing through the second refractor 21 is directly projected to the laser focusing body 23, and the other part of the laser is reflected by the second refractor 21 and enters the optical receiving focuser 11.

[0032] Laser beam measurement process: The laser signal entering the optical receiving focuser 11 is transmitted to the avalanche photodetector 10. The laser signal is amplified by the high-frequency signal amplifier 9 after passing through the avalanche photodetector 10, and then processed by the high-frequency signal mixing processor 8, and finally input into the microprocessor 1. At the same time, the temperature signal is transmitted to the microprocessor 1 through the temperature sensor 12.

[0033] Measurement processing process: The signal transmitted to the microprocessor 1 is processed by the main processing chip and the programmable logic chip inside the microprocessor 1, and then the measurement result is finally displayed on the liquid crystal display screen 14 through the display system 13. At the same time, the measured data is automatically stored in the memory 15 after being processed by the logic algorithm processing system 2.

[0034] Although embodiments of the present invention have been disclosed and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Ultra-high precision multi-purpose synchronous laser measuring instrument, its features include: A microprocessor (1), wherein the microprocessor (1) is connected to a logic algorithm processing system (2) via a wire, the logic algorithm processing system (2) is connected to a memory (15) via a wire, the microprocessor (1) is connected to a display system (13) via an internal logic, the display system (13) is connected to a liquid crystal display screen (14) via a wire, the microprocessor (1) is connected to a high-frequency signal generator (3) via a wire, the upper end of the high-frequency signal generator (3) is connected to a high-frequency signal modulator (4) via a wire, and the high-frequency signal modulator (4) is connected to a high-frequency signal generator (3) via a wire. The high-frequency signal generator (3) is connected to a high-frequency signal mixing processor (8) through a wire, the right end of the high-frequency signal mixing processor (8) is connected to the microprocessor (1) through a wire, the left end of the high-frequency signal mixing processor (8) is connected to a high-frequency signal amplifier (9) through a wire, and the left end of the high-frequency signal amplifier (9) is connected to the avalanche photodetector through a wire. (10), the avalanche photodetector (10) is connected to the optical receiving focuser (11) through an optical structure, the temperature sensor (12) is connected to the microprocessor (1) through a wire, the microprocessor (1) is connected to the power supply through a wire, the power supply is connected to the battery management system (16), the battery management system (16) is connected to the detector bias high-voltage boost module (17) through a wire, the detector bias high-voltage boost module (17) is connected to the transmitter constant current module (18) through a wire, and a first refractor is provided on the left side of the optical collimation system (7). (20), a second refractor (21) is provided on the left side of the optical receiving focuser (11), the second refractor (21) is located directly below the first refractor (20), a focusing convex mirror (22) is provided below the second refractor (21), a laser focusing body (23) is provided below the focusing convex mirror (22), a detection light beam (24) and a reflection signal are passed between the focusing convex mirror (22) and the laser focusing body (23), a camera (26) is provided above the first refractor (20), and the camera (26) receives the light signal transmitted by the main optical axis (25); The microprocessor (1) sends a measurement start signal to a high-frequency signal generator (3), the high-frequency signal generator (3) generates a high-frequency signal to a high-frequency signal modulator (4), the high-frequency signal modulator (4) then sends the modulated high-frequency signal to a transmission driver (5), the transmission driver (5) drives a laser transmitter (6) to emit laser light, and the laser light is adjusted by an optical collimation system (7); The laser beam adjusted by the optical collimation system (7) enters the first refraction mirror (20), and the first refraction mirror (20) refracts the laser beam and then enters the second refraction mirror (21) again. The detection light beam (24) after passing through the second refraction mirror (21) is directly projected onto the laser focusing body (23).

2. The working method of the ultra-high precision multi-purpose synchronous laser measuring instrument according to claim 1 is characterized in that: The laser signal reflected by the laser focusing body (23) is refracted to the optical receiving focuser (11) through the second refractor (21), and the signal of the optical receiving focuser is transmitted to the avalanche photodetector (10). The laser signal is amplified by the avalanche photodetector (10) and then amplified by the high-frequency signal amplifier (9). The laser signal is then processed with the emission signal generated by the high-frequency signal generator (3) through the high-frequency signal mixing processor (8) and finally input into the microprocessor (1). At the same time, the temperature signal is transmitted to the microprocessor (1) through the temperature sensor (12).

3. The working method of the ultra-high precision multi-purpose synchronous laser measuring instrument according to claim 1 is characterized in that: The microprocessor (1) outputs the signal to its internal main processing chip and programmable logic chip for joint processing, and finally displays the measurement result on a liquid crystal display screen (14) via a display system (13). At the same time, the measured data is automatically stored in a memory (15) after being processed by a logic algorithm processing system (2).

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