A programmable high-precision photoelectric speed sensor

Abstract

The utility model belongs to the technical field of sensors, and discloses a programmable high-precision photoelectric speed sensor, comprising a bracket, which is L-shaped and threadedly connected to a shell; a photoelectric component is installed at the front end of the shell, and a light shield is installed on the photoelectric component, and a filter is installed on the light shield; a tail shell is installed at the rear end of the shell, a circuit board is installed between the tail shell and the photoelectric component, and a speed indicator light is installed on the circuit board; a programmable interface and a power supply signal output pin connected to the circuit board circuit are installed on the tail shell, and the tail shell is provided with a speed observation window. The utility model solves the problem that the speed signal cannot be conveniently installed during the vibration monitoring of rotating machinery in industrial sites and the current photoelectric speed sensor cannot take into account high-speed and low-speed high-precision measurements at the same time. The design is reasonable, solves the shortcomings of the prior art, and has good effects.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and in particular relates to a programmable high-precision photoelectric rotation speed sensor. Background Art

[0002] Photoelectric speed sensors have the advantages of fast response speed, high accuracy, high resolution, good reliability, small size, light weight, low power consumption, easy integration, etc., and have high economic benefits.

[0003] The photoelectric sensor uses the signal collected by the photoelectric pulse, which is similar to the pulse signal. However, due to the interference of strong light, electric field and magnetic field in the actual use environment, the collected key phase signal often cannot be directly used for speed calculation, and the signal needs to be processed. Utility Model Content

[0004] In view of the problems raised by the above background technology, the purpose of the utility model is to provide a programmable high-precision photoelectric rotation speed sensor.

[0005] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0006] A programmable high-precision photoelectric rotation speed sensor comprises a bracket, the bracket is L-shaped, and the bracket is threadedly connected to a housing;

[0007] The front end of the housing is equipped with a photoelectric component, the photoelectric component is adapted to be equipped with a sunshade, and the sunshade is equipped with a filter;

[0008] A tail shell is installed at the rear end of the shell, a circuit board is installed between the tail shell and the photoelectric component, a speed indicator light is installed on the circuit board, a programmable interface and a power supply signal output pin connected to the circuit board circuit are installed on the tail shell, and a speed observation window is provided on the tail shell.

[0009] It is further defined that the entire outer wall of the shell is provided with external threads, and the shell threads are matched with two nuts. With this design, the bracket can be clamped between the two by rotating the nuts on both sides, thereby enhancing the fixing effect of the bracket to the shell.

[0010] It is further defined that the bracket includes an L-shaped base, the L-shaped base is provided with two fixing holes, one of the fixing holes is hingedly mounted with a support plate, and the support plate is threadedly connected to the outer side of the shell. Such a design can realize the change of angle and enhance the adaptability of use.

[0011] It is further defined that the optoelectronic component includes an optoelectronic mounting seat, the optoelectronic mounting seat is equipped with a laser transmitting tube and a laser receiving tube, and the optoelectronic mounting seat is provided with a lens at the laser receiving tube. Such a design realizes the transmission of optoelectronic signals.

[0012] Further defined, the filter is a 650nm high-transmittance red light filter. With this design, the filter only allows the frequency signal component of the nm laser emission tube to pass through, and can filter out the influence of other light on the receiving tube.

[0013] The beneficial effects of adopting the utility model are:

[0014] The utility model adopts the principle of photoelectric conversion to measure the value of the wheel speed, converts the wheel speed signal at the front end into a corresponding electrical signal output, and then calculates the wheel speed value through the electrical signal. The design method can meet the needs of speed measurement. In view of the strong interference environment on site, the failure cause of the photoelectric speed sensor is analyzed and the sensor structure is optimized. The simulation analysis and experimental test of the sensor show that the photoelectric speed sensor has high reliability and stability in a high interference environment, and can be used for wheel speed measurement in industrial sites;

[0015] The installation of the programmable interface in the utility model has the ability to measure both high and low speeds with high precision through the adjustment of parameters;

[0016] The utility model solves the problem that the speed signal cannot be conveniently installed during the vibration monitoring of rotating machinery in industrial sites and that the current photoelectric speed sensor cannot simultaneously take into account high-speed and low-speed high-precision measurements. The utility model has a reasonable design, solves the shortcomings of the existing technology, and has good effects.

[0017] The utility model has a compact structure, a small appearance, is simple and convenient to install, and is conducive to maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of a programmable high-precision photoelectric speed sensor of the utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of a programmable high-precision photoelectric speed sensor of the utility model;

[0021] Figure 3 This is a schematic cross-sectional structure diagram of an embodiment of a programmable high-precision photoelectric rotation speed sensor of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of a photoelectric component of an embodiment of a programmable high-precision photoelectric speed sensor of the utility model;

[0023] The main component symbols are described as follows:

[0024] Bracket 1; housing 2; photoelectric component 3; light shield 4; filter 5; tail shell 6; circuit board 7; programmable interface 8; power supply signal output pin 9; speed observation window 10; nut 11;

[0025] L-shaped base 101; fixing hole 102; support plate 103;

[0026] Photoelectric mounting seat 301; laser emitting tube 302; laser receiving tube 303; lens 304. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1 to Figure 4 As shown, a programmable high-precision photoelectric speed sensor of the utility model includes a bracket 1, the bracket 1 is L-shaped, and the bracket 1 is threadedly connected to a housing 2;

[0029] The front end of the housing 2 is provided with a photoelectric component 3, the photoelectric component 3 is adapted to be provided with a light shield 4, and the light shield 4 is provided with a filter 5;

[0030] A tail shell 6 is installed at the rear end of the outer shell 2, a circuit board 7 is installed between the tail shell 6 and the photoelectric component 3, the circuit board 7 is installed with a speed indicator light, the tail shell 6 is installed with a programmable interface 8 and a power supply signal output pin 9 connected to the circuit board 7, and the tail shell 6 is provided with a speed observation window 10.

[0031] In this embodiment, when a programmable high-precision photoelectric speed sensor is used, the filter 5 is first directly installed on the front end of the light shield 4 by pasting, and then the circuit board 7 is welded on the tail shell 6, and the circuit board 7 and the tail shell 6 are placed in the shell 2 together, and the tail shell 6 is fixed to the tail end of the shell 2 by gluing, and then the other end of the circuit board 7 is connected to the photoelectric component 3 by a wire, and the photoelectric component 3 is placed in the shell 2, and finally the light shield 4 with the filter 5 installed is screwed on the front end of the shell 2 to realize the installation of the photoelectric component 3;

[0032] The bracket 1 is rotated on the housing 2, and then the bracket 1 is installed at the use position to fix the housing 2, thereby realizing the overall installation. The installation is simple and convenient, and the disassembly and detection are convenient and quick.

[0033] During this period, the laser emitting tube driving circuit on the circuit board 7 generates a 180KHz modulated square wave to drive the laser emitting tube to emit infrared laser. After being reflected by the reflective strip, the infrared laser passes through the receiving hole on the photoelectric component and is focused on the receiving tube through the lens. The receiving tube is modulated receiving and only allows 170KHz to 200KHz signals to pass through. It can filter out the influence of other optical signals on the scene and only retain valid signals. There are two speed observation windows 10 on the tail shell 6, and there is a speed indicator light on the circuit board 7. The speed indication can be seen through the speed observation window 10.

[0034] Preferably, the entire outer wall of the shell 2 is provided with external threads, and the threads of the shell 2 are matched with two nuts 11. With this design, the bracket 1 can be clamped between the two by rotating the nuts 11 on both sides, thereby strengthening the fixing effect of the bracket 1 on the shell 2. In fact, the structure for strengthening the fixing of the bracket 1 can also be considered according to specific circumstances.

[0035] The preferred bracket 1 includes an L-shaped base 101, and the L-shaped base 101 is provided with two fixing holes 102, one of which is hingedly mounted with a support plate 103, and the support plate 103 is threadedly connected to the outer side of the shell 2. Such a design can realize the change of angle and enhance the adaptability of use. In fact, the structure of the bracket 1 can also be considered according to specific circumstances.

[0036] Preferably, the optoelectronic component 3 includes an optoelectronic mounting seat 301, on which a laser emitting tube 302 and a laser receiving tube 303 are installed. The optoelectronic mounting seat 301 is provided with a lens 304 at the laser receiving tube 303. Such a design realizes the transmission of optoelectronic signals. In fact, the structure of the optoelectronic component 3 can also be considered according to specific circumstances.

[0037] The preferred filter 5 is a 650nm high-transmittance red light filter. With this design, the filter 5 only allows the 650nm laser emission tube frequency signal component to pass through, which can filter out the influence of other light on the receiving tube. In fact, the selection of the filter 5 can also be considered according to the specific situation.

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A programmable high-precision photoelectric speed sensor, comprising a bracket (1), characterized in that: The bracket (1) is L-shaped, and the bracket (1) is threadedly connected to the housing (2); A photoelectric component (3) is installed at the front end of the housing (2); a light shield (4) is installed on the photoelectric component (3); and a filter (5) is installed on the light shield (4); A tail shell (6) is installed at the rear end of the housing (2), a circuit board (7) is installed between the tail shell (6) and the photoelectric component (3), a speed indicator light is installed on the circuit board (7), a programmable interface (8) and a power supply signal output pin (9) connected to the circuit board (7) are installed on the tail shell (6), and a speed observation window (10) is provided on the tail shell (6).

2. A programmable high-precision photoelectric speed sensor according to claim 1, characterized in that: The entire outer wall of the outer shell (2) is provided with external threads, and the threads of the outer shell (2) are matched with two nuts (11).

3. A programmable high-precision photoelectric speed sensor according to claim 2, characterized in that: The bracket (1) comprises an L-shaped base (101), wherein the L-shaped base (101) is provided with two fixing holes (102), wherein one of the fixing holes (102) is hingedly mounted with a support plate (103), and the support plate (103) is threadedly connected to the outside of the housing (2).

4. A programmable high-precision photoelectric speed sensor according to claim 3, characterized in that: The optoelectronic assembly (3) comprises an optoelectronic mounting seat (301), the optoelectronic mounting seat (301) is equipped with a laser emitting tube (302) and a laser receiving tube (303), and the optoelectronic mounting seat (301) is provided with a lens (304) at the laser receiving tube (303).

5. A programmable high-precision photoelectric speed sensor according to claim 4, characterized in that: The filter (5) is a 650nm high-transmittance red light filter.

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