A device for convenient distance measurement using a laser displacement sensor.

Abstract

This application discloses a device for convenient distance measurement using a laser displacement sensor, specifically relating to the field of photoelectric measurement. It includes: a housing containing a battery and a laser displacement sensor, with a protrusion connected to the outer side of the housing; a first through hole and a second through hole formed on the protrusion; a laser hole formed on the housing, communicating with both the first and second through holes; a biconcave lens and a first neutral density filter disposed within the first through hole, both coaxial with the center of the laser diode of the laser displacement sensor; a second neutral density filter disposed within the second through hole, with the second and first neutral density filters at the same distance from the laser displacement sensor; and the second neutral density filter being coaxial with the center of the receiver of the laser displacement sensor. Based on this device, lenses with appropriate parameters can be replaced as needed to change the parameters of the laser displacement sensor, flexibly varying the measurement distance.

Description

Technical Field

[0001] This application relates to the field of photoelectric measurement, and in particular to a device for convenient distance measurement using a laser displacement sensor. Background Technology

[0002] A laser displacement sensor is a sensor that uses laser technology to measure the position or displacement of a target object. By measuring the propagation time or phase change of the laser beam, the distance between the target and the sensor can be calculated. Laser displacement sensors are widely used in manufacturing, robotics, and construction engineering to measure and monitor parameters such as displacement, vibration, and shape of objects. The primary targets of laser displacement sensors are diffuse reflective surfaces. When the target is a metal surface, specular reflection occurs, causing the light-receiving element to fail to receive a stable signal, often resulting in no response or abnormal response from the sensor. In industrial production, the solution for detecting specular reflective surfaces is to manually install and adjust the sensor to ensure that the surface of the projection element forms a certain angle with the object being measured, so that the emitted laser light is reflected by the object and enters the light-receiving element, allowing the light-receiving element to receive the signal. However, the use of laser displacement sensors has the following problems: the use of laser displacement sensors is related to the reflective characteristics of the object's surface; existing laser displacement sensors have fixed parameters and cannot flexibly change the measurement distance. Utility Model Content

[0003] The main objective of this application is to provide a device for convenient distance measurement using a laser displacement sensor, which aims to solve the problem that existing sensors cannot flexibly change the measurement distance.

[0004] To achieve the above objectives, this application provides a device for convenient distance measurement using a laser displacement sensor, comprising: a housing containing a battery and a laser displacement sensor, with a protrusion connected to the outer side of the housing; a first through hole and a second through hole formed on the protrusion, the first through hole being located above the second through hole; a laser hole formed on the housing, the laser hole communicating with both the first and second through holes; a biconcave lens and a first neutral density filter disposed within the first through hole, the biconcave lens being located between the first neutral density filter and the laser displacement sensor, both the biconcave lens and the first neutral density filter being coaxial with the center of the laser diode of the laser displacement sensor; a second neutral density filter disposed within the second through hole, the second neutral density filter and the first neutral density filter being at the same distance from the laser displacement sensor; and the second neutral density filter being coaxial with the center of the receiver of the laser displacement sensor.

[0005] Optionally, the protrusion has a first slot and a second slot, both of which are perpendicularly connected to the first through hole; the biconcave lens extends into the first through hole along the first slot, and the first neutral filter extends into the first through hole along the second slot.

[0006] Optionally, a third slot is also provided on the protrusion, and the third slot is perpendicularly connected to the second through hole; the second neutral filter extends into the second through hole along the third slot.

[0007] Optionally, it also includes a fixed baffle, with an insert plate vertically connected to one side of the fixed baffle; the side wall of the protrusion is provided with a positioning groove adapted to the insert plate, the positioning groove is located on the same side as the first slot, the insert plate is located in the positioning groove, and the end of the fixed baffle is located below the third slot.

[0008] Optionally, the insert plate is L-shaped.

[0009] Optionally, the housing is provided with a battery compartment adapted to the battery and a fixing slot adapted to the laser displacement sensor. The fixing slot is located above the battery compartment, the laser displacement sensor is located in the fixing slot, and the battery is located in the battery compartment.

[0010] Compared with the prior art, the beneficial effects of this application are as follows:

[0011] This utility model discloses a device for convenient distance measurement using a laser displacement sensor. A biconcave lens 5, a first neutral density filter 6, and a second neutral density filter 7 are disposed in a first through hole 41 and a second through hole 42. Lenses with appropriate parameters can be replaced as needed to change the parameters of the laser displacement sensor and flexibly change the measurement distance. The housing 1 is provided with a battery compartment 8 adapted to the battery 2 and a fixing slot 9 adapted to the laser displacement sensor 3. An independent power supply installed in the battery compartment 8 provides power, allowing the device to be used handheld and can also be quickly removed and adjusted, increasing portability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the device for convenient distance measurement using a laser displacement sensor, as described in this application.

[0013] Figure 2 This is a schematic diagram of the internal structure of the device for convenient distance measurement using a laser displacement sensor, as described in this application.

[0014] Figure 3 This is a side view of the device for convenient distance measurement using a laser displacement sensor, as described in this application.

[0015] Figure 4 This is a schematic diagram of the protrusion structure of the device for convenient distance measurement using a laser displacement sensor, as described in this application.

[0016] Figure 5 This is a front view of the device for convenient distance measurement using a laser displacement sensor, as described in this application.

[0017] Figure 6 This is a physical image of the device for convenient distance measurement using a laser displacement sensor, as described in this application.

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The first embodiment of this utility model provides a device for convenient distance measurement using a laser displacement sensor, such as... Figure 1-6 As shown, the device includes a housing 1, inside which a battery 2 and a laser displacement sensor 3 are disposed. A protrusion 4 is connected to the outside of the housing 1. A first through hole 41 and a second through hole 42 are formed on the protrusion 4, with the first through hole 41 located above the second through hole 42. A laser hole is formed on the housing 1, communicating with both the first through hole 41 and the second through hole 42. A biconcave lens 5 and a first neutral density filter 6 are disposed within the first through hole 41, with the biconcave lens 5 located between the first neutral density filter 6 and the laser displacement sensor 3. Both the biconcave lens 5 and the first neutral density filter 6 are coaxial with the center of the laser diode of the laser displacement sensor 3. A second neutral density filter 7 is disposed within the second through hole 42, with the laser displacement sensor 3 at the same distance from the second neutral density filter 7 and the first neutral density filter 6. The second neutral density filter 7 is coaxial with the center of the receiver of the laser displacement sensor 3. The first neutral density filter 6 and the second neutral density filter 7 have identical dimensions and transmittance.

[0021] Specifically, the housing 1 contains a battery compartment 8 adapted to the battery 2 and a mounting slot 9 adapted to the laser displacement sensor 3. The mounting slot 9 is located above the battery compartment 8, the laser displacement sensor 3 is located within the mounting slot 9, and the battery 2 is located within the battery compartment 8. An independent power supply installed within the battery compartment 8 provides the power source, allowing the device to be used handheld or quickly detached for adjustment. The device in this embodiment is portable.

[0022] For example, further, the housing 1 includes a groove 101 and a cover 102, which are detachably connected. A baffle 103 is fixed inside the housing 1, dividing the housing 1 into upper and lower parts. The battery compartment 8 is located below the baffle 103. The fixing groove 9 is located above the baffle 103 and is located near the protrusion 4 on the housing 1. A laser hole is opened on the housing 1. A through hole 10 communicating with the laser hole is also opened on the fixing groove 9. The through hole 10, the laser hole and the first through hole 41 form a laser emission channel. The through hole 10, the laser hole and the second through hole 42 form a reflection channel.

[0023] In this embodiment, the biconcave lens 5, the first neutral density filter 6, and the second neutral density filter 7 are disposed within the first through-hole 41 and the second through-hole 42. Lenses with appropriate parameters can be replaced as needed to change the parameters of the laser displacement sensor and flexibly adjust the measurement distance. The laser beam emitted by the laser diode of the laser displacement sensor 3 is diffused by the biconcave lens 5, filtered by the first neutral density filter 6, and then illuminates the surface of the object to be measured. After reflection from the surface of the object and further filtered by the second neutral density filter 7, the light enters the receiver to complete the measurement. The first neutral density filter 6 and the second neutral density filter 7 can reduce ambient light interference and suppress specific interference sources (specular reflection, sensor crosstalk), thereby improving the stability and reliability of the sensor in complex optical environments.

[0024] To further ensure the stability of the installation of the biconcave lens 5, the first neutral density filter 6, and the second neutral density filter 7, slots adapted to the biconcave lens 5 and the first neutral density filter 6 are respectively provided along the side wall of the first through hole 41 for positioning the biconcave lens 5 and the first neutral density filter 6; and slots adapted to the second neutral density filter 7 are provided along the side wall of the second through hole 42 for positioning the second neutral density filter 7.

[0025] Furthermore, the protrusion 4 has a first slot 11 and a second slot 12, both of which are perpendicularly connected to the first through hole 41; the biconcave lens 5 extends into the first through hole 41 along the first slot 11, and the first neutral density filter 6 extends into the first through hole 41 along the second slot 12. The protrusion 4 also has a third slot 13, which is perpendicularly connected to the second through hole 42; the second neutral density filter 7 extends into the second through hole 42 along the third slot 13.

[0026] In this embodiment, a first slot 11, a second slot 12, and a third slot 13 are provided on one side of the protrusion 4, so that the biconcave lens 5 extends into the first through hole 41 along the first slot 11, the first neutral density filter 6 extends into the first through hole 41 along the second slot 12, and the second neutral density filter 7 extends into the second through hole 42 along the third slot 13, facilitating the installation and replacement of the biconcave lens 5, the first neutral density filter 6, and the second neutral density filter 7. Furthermore, mounting slots can be provided for loading the biconcave lens 5, the first neutral density filter 6, and the second neutral density filter 7 respectively. The biconcave lens 5, the first neutral density filter 6, and the second neutral density filter 7 are placed into their respective mounting slots, and then the mounting slot containing the biconcave lens 5 is inserted into the first through hole through the first slot 11. Based on the reflection characteristics of the surface of the object to be measured and the distance to be measured, the appropriate diffusion lens and filter are selected. By replacing the inserted biconcave lens 5, the first neutral density filter 6 and the second neutral density filter 7, the distance can be adjusted according to the actual required test distance. It has a strong ability to cope with complex and restricted production environments and is of great significance for the application of laser displacement sensor 3 in the industrial field.

[0027] To prevent the lenses in the first slot 11, second slot 12, and third slot 13 from sliding out, the device in this embodiment further includes a fixing baffle 14, with an insert plate 15 vertically connected to one side of the fixing baffle 14. A positioning groove 16, adapted to the insert plate 15, is formed inwardly on the side wall of the protrusion 4. The positioning groove 16 is located on the same side as the first slot 11, and the insert plate 15 is located within the positioning groove 16. The end of the fixing baffle 14 is located below the third slot 13. For example, the insert plate 15 is L-shaped. The positioning groove 16 is also L-shaped, which further secures the insert plate 15 and prevents the fixing baffle 14 from falling off.

[0028] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A device for convenient distance measurement using a laser displacement sensor, characterized in that, include: The housing contains a battery and a laser displacement sensor, and a protrusion is connected to the outside of the housing. The protrusion has a first through hole and a second through hole, with the first through hole located above the second through hole; The housing is provided with laser holes, which are respectively connected to the first through hole and the second through hole; A biconcave lens and a first neutral density filter are disposed in the first through hole. The biconcave lens is located between the first neutral density filter and the laser displacement sensor. Both the biconcave lens and the first neutral density filter are coaxial with the center of the laser diode of the laser displacement sensor. A second neutral density filter is disposed inside the second through hole. The second neutral density filter and the first neutral density filter are at the same distance from the laser displacement sensor. The second neutral density filter is coaxial with the center of the receiver of the laser displacement sensor.

2. The device for convenient distance measurement using a laser displacement sensor according to claim 1, characterized in that, The protrusion has a first slot and a second slot, both of which are perpendicularly connected to the first through hole; the biconcave lens extends into the first through hole along the first slot, and the first neutral filter extends into the first through hole along the second slot.

3. The device for convenient distance measurement using a laser displacement sensor according to claim 2, characterized in that, The protrusion is also provided with a third slot, which is perpendicularly connected to the second through hole; the second neutral filter extends into the second through hole along the third slot.

4. The device for convenient distance measurement using a laser displacement sensor according to claim 3, characterized in that, It also includes a fixed baffle, and a plug plate is vertically connected to one side of the fixed baffle; The sidewall of the protrusion is provided with a positioning groove that is adapted to the insert plate. The positioning groove is located on the same side as the first slot. The insert plate is located in the positioning groove. The end of the fixing baffle is located below the third slot.

5. The device for convenient distance measurement using a laser displacement sensor according to claim 4, characterized in that, The insert plate is L-shaped.

6. The device for convenient distance measurement using a laser displacement sensor according to claim 1, characterized in that, The housing contains a battery compartment adapted to the battery and a fixing slot adapted to the laser displacement sensor. The fixing slot is located above the battery compartment, the laser displacement sensor is located inside the fixing slot, and the battery is located inside the battery compartment.

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