A low-cost ring-shaped sensing device based on optical prisms

Abstract

The utility model discloses a low-cost annular sensing device based on optical prisms, comprising: an annular shell, an annular opening is provided on the inner side of the annular shell, a plurality of emitting optical prisms and receiving optical prisms are distributed in a circular array inside the annular shell, a plurality of emitting circuit boards and receiving circuit boards are distributed in a circular array inside the annular shell, the emitting circuit board is arranged on one side of the emitting optical prisms, and the receiving circuit board is arranged on one side of the receiving optical prisms. The utility model replaces the original infrared array by an optical prism array composed of emitting optical prisms and receiving optical prisms, thereby greatly reducing the production cost, and having better stability and higher reliability.

Description

Technical Field

[0001] The present disclosure relates to the technical field of sensing devices, and in particular to a low-cost annular sensing device based on optical prisms. Background Art

[0002] At present, the annular sensing devices basically use infrared sensing arrays, which include infrared transmitting arrays, infrared receiving arrays, and infrared filters. The biggest drawback is that as the density of the array increases, the cost increases, and the probability of problems increases. Secondly, it is easily affected by light interference and is unstable. Utility Model Content

[0003] The present disclosure provides a low-cost annular sensing device based on optical prisms to solve one of the technical problems recognized by the inventors.

[0004] The present disclosure provides a low-cost annular sensing device based on optical prisms, comprising an annular shell, an annular opening being provided on the inner side of the annular shell, a plurality of emitting optical prisms and receiving optical prisms being distributed in a circular array inside the annular shell, a plurality of emitting circuit boards and receiving circuit boards being distributed in a circular array inside the annular shell, the emitting circuit board being arranged on one side of the emitting optical prism, and the receiving circuit board being arranged on one side of the receiving optical prism.

[0005] Preferably, the emitting light prism and the receiving light prism have the same structure.

[0006] Preferably, the emitting light prism is a right-angled triangle structure, the bottom side of the emitting light prism is a convex lens structure, the hypotenuse of the emitting light prism is a sawtooth-shaped step structure, and the right-angled side of the emitting light prism is a plane structure.

[0007] Preferably, an infrared transmitting circuit is integrated on the transmitting circuit board, and the transmitting end of the infrared transmitting circuit is arranged close to the bottom edge of the transmitting light prism and is arranged perpendicular to the bottom edge of the transmitting light prism.

[0008] Preferably, a receiving sensor is integrated on the receiving circuit board, and a receiving end of the receiving sensor is arranged close to the bottom edge of the receiving light prism and is arranged perpendicular to the bottom edge of the receiving light prism.

[0009] Preferably, a transparent lens is provided on the inner side of the annular shell near the annular opening.

[0010] Preferably, the annular shell includes a surface cover and a bottom shell, the surface cover and the bottom shell are fixedly connected by bolts, the bottom shell is provided with a plurality of mounting grooves, and the emitting light prisms and the receiving light prisms are embedded in the mounting grooves.

[0011] Preferably, a cable is embedded in the side surface of the annular housing, and the cable is electrically connected to the transmitting circuit board and the receiving circuit board.

[0012] The beneficial effects of the present disclosure are mainly as follows: the present utility model replaces the original infrared array with a prism array composed of emitting prisms and receiving prisms, thereby greatly reducing the production cost, and achieving better stability and higher reliability.

[0013] It should be understood that both the foregoing general description and the following specific embodiments are for the purpose of example and illustration and do not necessarily limit the present disclosure. The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate the subject matter of the present disclosure. At the same time, the specification and the drawings are used to explain the principles of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the specific embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present disclosure;

[0016] Figure 2 It is a structural explosion diagram of an embodiment of the present disclosure;

[0017] Figure 3 This is a schematic diagram of the structure of the emitting light prism according to an embodiment of the present disclosure;

[0018] Figure 4 A schematic diagram of the optical path of a single reflecting light prism and a receiving light prism according to an embodiment of the present disclosure;

[0019] Figure 5 It is a schematic diagram of the overall optical path of an embodiment of the present disclosure;

[0020] Icon: 1-annular shell; 11-annular opening; 101-face cover; 102-bottom shell; 2-emitting light prism; 21-bottom edge; 22-hypotenuse; 23-right-angle edge; 3-receiving light prism; 4-emitting circuit board; 5-receiving circuit board; 6-transparent lens; 7-cable. DETAILED DESCRIPTION

[0021] The technical solution of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0022] Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present disclosure.

[0023] In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying 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 a limitation of the present disclosure. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 disclosure can be understood according to specific circumstances.

[0025] Example

[0026] like Figure 1-3 As shown, this embodiment provides a low-cost annular sensing device based on light prisms, including an annular shell 1, wherein the annular shell 1 is composed of two oppositely arranged surface covers 101 and bottom shells 102, the surface covers 101 and bottom shells 102 are clamped to each other and fixed by bolts, and an annular opening 11 is provided on the inner side of the annular shell 1, and the function of the annular opening 11 is to allow light to pass through; a plurality of emitting light prisms 2 and receiving light prisms 3 are distributed in a circular array inside the annular shell 1, and a plurality of mounting grooves are provided on the inner side of the bottom shell 102, and the emitting light prisms 2 and receiving light prisms 3 are embedded in the mounting grooves for limiting position, so as to achieve fixed installation, and an emitting circuit board 4 is provided inside the annular shell 1 near the emitting light prism 2, and a plurality of receiving circuit boards 5 are provided inside the annular shell 1 near the receiving light prism 3.

[0027] The structures of the emitting light prism 2 and the receiving light prism 3 are the same.

[0028] Specifically, the cross-section of the emitting light prism 2 is a right triangle structure, including three side surfaces, wherein the bottom side 21 of the emitting light prism 2, that is, the side close to the emitting end of the emitting circuit board 4, is a convex lens structure, the hypotenuse 22 of the emitting light prism 2 is a sawtooth step structure, and the right angle side 23 of the emitting light prism 2 is a plane structure; Figure 4 As shown, the convex lens structure passing through the bottom edge 21 converges the light emitted from the emitting end of the emitting circuit board 4 into parallel light that travels through the emitting light prism 2, and after being reflected by the hypotenuse 22, the light is emitted through the right-angled edge 23 at an angle of 90°. In addition, the emitting light prism 2 is made of a high-transmittance material to allow light to pass through.

[0029] Similarly, the right-angled edge 23 of the receiving light prism 3 receives the light reflected by the transmitting light prism 2. The light enters from the right-angled edge 23 of the receiving light prism 3, is reflected at a 90° angle by the hypotenuse 22 to the convex lens structure of the bottom edge 21, and after being converged by the convex lens, enters the receiving end of the receiving circuit board 5. The receiving circuit board 5 transmits the received data to the host computer through the cable 7.

[0030] In this embodiment, the number of the emitting light prisms 2 and the receiving light prisms 3 are both 12, the number of the emitting circuit boards 4 and the receiving circuit boards 5 is three, each of the emitting circuit boards 4 and the receiving circuit boards 5 corresponds to four emitting light prisms 2 and four receiving light prisms 3, respectively, and the emitting light prisms 2 and the receiving light prisms 3 are respectively arranged on both sides of the annular housing 1. Figure 5 As shown, the light emitted by the emitting light prism 2 is received by the corresponding receiving light prism 3 .

[0031] Specifically, an infrared transmitting circuit is integrated on the transmitting circuit board 4, and the transmitting end of the infrared transmitting circuit is arranged near the bottom edge 21 of the transmitting light prism 2 and is arranged perpendicular to the bottom edge 21 of the transmitting light prism 2. In this embodiment, four infrared transmitting circuits are integrated on each of the transmitting circuit boards 4. The light emitted by the transmitting end of each infrared transmitting circuit enters the transmitting light prism 2 from the bottom edge 21 of the transmitting light prism 2, enters the receiving light prism 3 after reflection, and is finally received by the receiving circuit board 5.

[0032] Specifically, a receiving sensor is integrated on the receiving circuit board 5, and a receiving end of the receiving sensor is arranged near the bottom edge 21 of the receiving light prism 3 and is arranged perpendicular to the bottom edge 21 of the receiving light prism 3. In this embodiment, four receiving sensors are integrated on each receiving circuit board 5, and the light reflected by the receiving light prism 3 is received by the receiving sensors.

[0033] Furthermore, a transparent lens 6 is provided on the inner side of the annular housing 1 near the annular opening 11. The transparent lens 6 protects the interior to prevent dust from entering.

[0034] Furthermore, a cable 7 is embedded in the side of the annular housing 1, and the cable 7 is electrically connected to the transmitting circuit board 4 and the receiving circuit board 5. The cable 7 is connected to a host computer to provide power and data transmission for the transmitting circuit board 4 and the receiving circuit board 5.

[0035] The working principle of the utility model is as follows: the utility model replaces the infrared array with a prism array, and the light is emitted from the transmitting circuit board 4 and passes through the convex lens structure at the bottom edge 21 of the transmitting prism 2 to converge the light emitted from the transmitting end of the transmitting circuit board 4 into parallel light, which shuttles through the transmitting prism 2. After being reflected by the hypotenuse 22, the light is emitted through the right-angled edge 23 at an angle of 90°, and then the light reflected from the transmitting prism 2 is received by the right-angled edge 23 of the receiving prism 3. The light enters from the right-angled edge 23 of the receiving prism 3, is reflected by the hypotenuse 22 at an angle of 90° to the convex lens structure at the bottom edge 21, and then enters the receiving end of the receiving circuit board 5 after being converged by the convex lens. The receiving circuit board 5 transmits the received data to the host computer through the cable 7.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A low-cost annular sensing device based on optical prisms, characterized in that: include: An annular shell, wherein an annular opening is provided on the inner side of the annular shell, a plurality of emitting light prisms and receiving light prisms are distributed in a circular array inside the annular shell, a plurality of emitting circuit boards and receiving circuit boards are distributed in a circular array inside the annular shell, the emitting circuit board is arranged on one side of the emitting light prism, and the receiving circuit board is arranged on one side of the receiving light prism.

2. A low-cost annular sensing device based on optical prism according to claim 1, characterized in that: The structures of the transmitting light prism and the receiving light prism are the same.

3. A low-cost annular sensing device based on optical prism according to claim 2, characterized in that: The emitting light prism is a right-angled triangle structure, the bottom side of the emitting light prism is a convex lens structure, the hypotenuse of the emitting light prism is a sawtooth-shaped step structure, and the right-angled side of the emitting light prism is a plane structure.

4. A low-cost annular sensing device based on optical prism according to claim 3, characterized in that: An infrared emitting circuit is integrated on the emitting circuit board, and an emitting end of the infrared emitting circuit is arranged close to the bottom edge of the emitting light prism and is arranged perpendicular to the bottom edge of the emitting light prism.

5. The low-cost annular sensing device based on optical prism according to claim 4, characterized in that: A receiving sensor is integrated on the receiving circuit board. The receiving end of the receiving sensor is arranged close to the bottom edge of the receiving light prism and is arranged perpendicular to the bottom edge of the receiving light prism.

6. The low-cost annular sensing device based on optical prism according to claim 1, characterized in that: A transparent lens is arranged on the inner side of the annular shell near the annular opening.

7. The low-cost annular sensing device based on optical prism according to claim 1, characterized in that: The annular shell comprises a surface cover and a bottom shell, wherein the surface cover and the bottom shell are fixedly connected by bolts, and the bottom shell is provided with a plurality of mounting grooves, wherein the emitting light prism and the receiving light prism are embedded in the mounting grooves.

8. The low-cost annular sensing device based on optical prism according to claim 1, characterized in that: A cable is embedded in the side surface of the annular shell, and the cable is electrically connected to the transmitting circuit board and the receiving circuit board.

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