A laser sensor

Abstract

The utility model discloses a laser inductor, including the main part, is seted up with recess on the main part, the recess's groove bottom is seted up with first slot and second slot, the first slot's groove bottom is seted up with the first through -hole that communicates with the inside of main part, the second slot's groove bottom is seted up with the second through -hole that communicates with the inside of main part, the first slot is inlayed with first lens, the second slot is inlayed with second lens, first lens and second lens cover respectively on first through -hole and second through -hole, be equipped with control module in the main part, control module is electrically connected with laser emission device and laser receiving device, laser emission device and laser receiving device are respectively towards first through -hole and second through -hole. The utility model provides a kind of laser inductor, and the independent emission and receiving space of transmission end and receiving end are used respectively, avoid the misjudgment caused by the diffusion of light.

Description

Technical Field

[0001] This utility model relates to the field of sensors, and more particularly to a laser sensor. Background Technology

[0002] As a core sensor for non-contact ranging and object detection, the detection accuracy and anti-interference capability of the laser sensor directly affect the reliability of the system response. In the existing technology, the laser sensor generally integrates the transmitter and receiver into the same optical module and shares a protective lens to cover the front optical window. The laser beam emitted by the transmitter penetrates the lens and illuminates the object being measured. Part of the reflected light is reflected back and captured by the receiver through the lens to calculate the distance or trigger the sensing.

[0003] However, this type of shared lens design has significant drawbacks. When dust, water stains, or oil stains adhere to the lens surface, the emitted beam undergoes unexpected diffuse reflection at the inner and outer interfaces of the lens, and some stray light directly enters the optical path of the receiver, which can easily cause false triggering or deviations in ranging. Utility Model Content

[0004] The purpose of this invention is to provide a laser sensor in which the transmitting end and the receiving end adopt independent transmitting and receiving spaces to avoid misjudgment caused by light diffusion.

[0005] The technical solution adopted by the laser sensor disclosed in this utility model is:

[0006] The device includes a main body with a groove. The bottom of the groove has a first slot and a second slot. The bottom of the first slot has a first through hole communicating with the interior of the main body, and the bottom of the second slot has a second through hole communicating with the interior of the main body. A first lens is embedded in the first slot, and a second lens is embedded in the second slot. The first lens and the second lens cover the first through hole and the second through hole, respectively. The main body has a control module, and a laser emitting device and a laser receiving device are electrically connected to the control module. The laser emitting device and the laser receiving device face the first through hole and the second through hole, respectively.

[0007] As a preferred embodiment, the bottom of the first slot is provided with a secondary hole that communicates with the interior of the main body.

[0008] As a preferred embodiment, the main body extends with a boss, and the groove is located on the boss.

[0009] As a preferred embodiment, the main body is composed of a shell and a cover plate, and the boss is located on the shell.

[0010] As a preferred embodiment, the housing has a receiving cavity and a cavity body, the control module is placed in the receiving cavity, the side wall of the receiving cavity has a first wire-passing hole communicating with the cavity body, the housing has a wire-passing groove communicating with the cavity body, and the cover plate has a second wire-passing hole communicating with the cavity body.

[0011] As a preferred embodiment, the edge of the receiving cavity extends with a waterproof ring, and the cover plate has an annular groove, into which the waterproof ring is fixed.

[0012] As a preferred embodiment, the system also includes a mounting plate with multiple buckles extending from it, and a cover plate with multiple slots for the buckles to engage with the slots for fixation.

[0013] As a preferred embodiment, the mounting plate has a notch, which is located near the second wire hole.

[0014] The beneficial effects of the laser sensor disclosed in this utility model are:

[0015] The laser emitting device and the laser receiving device are respectively equipped with a first lens and a second lens as protective components. By embedding the first lens into the first slot and the second lens into the second slot, two independent optical paths are constructed. The diffuse beam generated by the first lens is blocked in the first slot, effectively preventing the diffuse beam generated by the laser emitting device from being received by the laser receiving device. At the same time, the second slot can also form a reverse blockage, forming a bidirectional optical path blocking mechanism to prevent the laser receiving device from receiving diffuse light sources and reduce the probability of false triggering of the laser sensor. The groove can reduce the adhesion of dust or moisture to the first and second lenses, and can reduce the diffuse beam generated by the light emitted by the laser emitting device in the first lens. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a laser sensor according to the present invention.

[0017] Figure 2 This is a schematic diagram of the installation of the housing and cover plate of a laser sensor according to this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of a laser sensor according to the present invention.

[0019] Figure 4 This is a schematic diagram of the structure of a laser sensor according to the present invention.

[0020] Figure 5 This is a schematic diagram of the structure of a laser sensor according to the present invention. Detailed Implementation

[0021] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0022] Please refer to Figures 1-4 .

[0023] This utility model discloses a laser sensor, which includes a main body 1 and a mounting plate 2;

[0024] The main body 1 is composed of a shell 11 and a cover plate 13. The shell 11 has a receiving cavity 111 and a cavity 114. The main body 1 has a control module, which is placed in the receiving cavity 111. The control module is fixedly connected to the inner wall of the receiving cavity 111. The control module is electrically connected to a laser emitting device and a laser receiving device.

[0025] Furthermore, a boss 12 extends from the main body 1 and is located on the outer shell 11. A groove 121 is provided on the main body 1 and is located on the boss 12.

[0026] Furthermore, the bottom of the groove 121 is provided with a first groove 122 and a second groove 126. The bottom of the first groove 122 is provided with a first through hole 123, which communicates with the inner shell 11 of the main body 1 and with the receiving cavity 111. The bottom of the first groove 122 is provided with a secondary hole 124, which communicates with the inner shell 11 of the main body 1 and with the receiving cavity 111. A first lens 125 is embedded in the first groove 122, covering the first through hole 123 and the secondary hole 124. A protrusion 116 extends from the inner wall of the outer shell 11. The first through hole 123 and the secondary hole 124 are both located on the protrusion 116. The laser emitting device faces the first through hole 123 and touches the protrusion 116. Other optical sensing devices can be installed on the reserved secondary hole 124, allowing the outer shell 11 to be expanded with other light sensing devices for monitoring.

[0027] Furthermore, a second through hole 127 is provided at the bottom of the second slot 126. The second through hole 127 communicates with the outer shell 11 of the main body 1 and with the receiving cavity 111. A second lens 128 is embedded in the second slot 126 and covers the second through hole 127. The laser receiving device faces the second through hole 127.

[0028] The boss 12 and the groove 121 can block some sunlight, preventing direct sunlight from hitting the laser emitting device and the laser receiving device, and reducing the interference of sunlight on the laser sensor; in addition, dust or moisture is not easy to enter the groove 121 and adhere to the first lens 125 and the second lens 128, which can reduce the diffuse beam generated by the light emitted by the laser emitting device in the first lens 125.

[0029] By embedding the first lens 125 into the first slot 122 and the second lens 128 into the second slot 126, two independent optical paths are constructed. The laser emitter generates a diffused beam at the point where the light is emitted. The protrusion 116 can increase the depth of the first through hole 123, thus blocking the diffused beam within the first through hole 123. The diffused beam emitted by the laser emitter is blocked within the first slot 122, effectively preventing the diffused beam from being received by the laser receiver.

[0030] Meanwhile, the second slot 126 can form a reverse shield, and the second through hole 127 further enhances the reverse shield, forming a bidirectional optical path shielding mechanism to prevent the laser receiving device from receiving diffuse light sources and reduce the probability of false triggering of this laser sensor.

[0031] Please refer to Figures 2-5 .

[0032] A first threading hole 112 is provided on the side wall of the receiving cavity 111, and the receiving cavity 111 is connected to the cavity 114 through the first threading hole 112. The first threading hole 112 is located at the center of the side wall of the receiving cavity 111. A threading groove 115 is provided on one side of the outer shell 11, and the threading groove 115 is connected to the cavity 114. When water splashes onto the outer shell 11, some water will enter the cavity 114 through the threading groove 115. Since the first threading hole 112 is located at the center of the side wall of the receiving cavity 111, the water in the cavity 114 cannot enter the receiving cavity 111 and remains in the cavity 114. There is a gap at the joint between the outer shell 11 and the cover plate 13. The water in the cavity 114 can be discharged through the gap, thereby improving the waterproof effect of this laser sensor.

[0033] Furthermore, a waterproof ring 113 extends from the edge of the receiving cavity 111, and an annular groove 131 is provided on the cover plate 13. The waterproof ring 113 is fixed in the annular groove 131. The design of the waterproof ring 113 being embedded in the annular groove 131 can eliminate the gap between the edge of the receiving cavity 111 and the cover plate 13, preventing water from entering the receiving cavity 111 from the gap, and further improving the waterproof effect of this laser sensor.

[0034] The cover plate 13 has a second through hole 132 communicating with the cavity 114. The cover plate 13 has multiple slots 133. In this embodiment, it is preferred that there are three slots 133 on the cover plate 13, with two slots 133 located on one side of the cover plate 13 and one slot 133 located on the other side of the cover plate 13. The mounting plate 2 has multiple buckles 211 extending from it. In this embodiment, it is preferred that there are three buckles 211 on the mounting plate 2, with two buckles 211 located on one side of the mounting plate 2 and one buckle 211 located on the other side of the mounting plate 2. The mounting plate 2 is fixedly connected to the designated installation area. The buckles 211 are engaged in the adjacent slots 133 for fixation. The mounting plate 2 constrains the main body 1 on the mounting plate 2 by engaging the buckles 211 in the slots 133, which can realize quick installation and disassembly replacement. The mounting plate 2 has a notch 212, which is close to the second through hole 132.

[0035] There are two ways to thread the wires in the control module:

[0036] In the first method, the wires of the control module pass through the first wire hole 112, the cavity 114 and the wire groove 115 in sequence, thereby guiding the wires out of the outer shell 11.

[0037] In the second method, the control module's wires pass sequentially through the first wire hole 112, the cavity 114, the second wire hole 132, and the notch 212, thereby guiding the wires into the installation area.

[0038] This invention provides a laser sensor in which a first lens and a second lens are respectively configured as protective components for a laser emitting device and a laser receiving device. By embedding the first lens into a first slot and the second lens into a second slot, two independent optical paths are constructed. The diffuse beam generated by the first lens is blocked in the first slot, effectively preventing the diffuse beam generated by the laser emitting device from being received by the laser receiving device. At the same time, the second slot can also form a reverse blocking mechanism, creating a bidirectional optical path blocking mechanism to prevent the laser receiving device from receiving diffuse light sources and reduce the probability of false triggering of the laser sensor. The grooves can reduce the adhesion of dust or moisture to the first and second lenses, and can reduce the diffuse beam generated by the light emitted by the laser emitting device in the first lens.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A laser sensor, characterized in that, The device includes a main body, on which a groove is formed. The bottom of the groove has a first slot and a second slot. The bottom of the first slot has a first through hole communicating with the interior of the main body. The bottom of the second slot has a second through hole communicating with the interior of the main body. A first lens is embedded in the first slot and a second lens is embedded in the second slot. The first lens and the second lens respectively cover the first through hole and the second through hole. The main body is equipped with a control module, which is electrically connected to a laser emitting device and a laser receiving device. The laser emitting device and the laser receiving device are respectively facing the first through hole and the second through hole.

2. A laser sensor as described in claim 1, characterized in that, The bottom of the first slot has a secondary hole that communicates with the interior of the main body.

3. A laser sensor as described in claim 2, characterized in that, The main body has a boss extending from it, and the groove is located on the boss.

4. A laser sensor as described in claim 3, characterized in that, The main body is composed of an outer shell and a cover plate, and the boss is located on the outer shell.

5. A laser sensor as described in claim 4, characterized in that, The housing has a receiving cavity and a cavity body. The control module is placed in the receiving cavity. The side wall of the receiving cavity has a first wire-passing hole communicating with the cavity body. The housing has a wire-passing groove communicating with the cavity body. The cover plate has a second wire-passing hole communicating with the cavity body.

6. A laser sensor as described in claim 5, characterized in that, The edge of the receiving cavity extends with a waterproof ring, and the cover plate has an annular groove, into which the waterproof ring is fixed.

7. A laser sensor as described in claim 6, characterized in that, It also includes a mounting plate with multiple buckles extending from it, and a cover plate with multiple slots for the buckles to engage and secure themselves in the slots.

8. A laser sensor as described in claim 7, characterized in that, The mounting plate has a notch, which is located near the second wire hole.

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