3D miniature radar

Abstract

The utility model discloses and provides a 3D miniature radar, comprising a housing, a main control circuit board, a first rotating mechanism, a second rotating mechanism and a light source module are arranged in the housing, the first rotating mechanism and the second rotating mechanism are respectively arranged on the side surface of the light source module, the first rotating mechanism is in transmission connection with a first reflector, and the second rotating mechanism is in transmission connection with a second reflector. The first reflecting mirror is arranged above the light source module, the second rotating mechanism is in transmission connection with a second reflecting mirror, and the main control circuit board is electrically connected with the first rotating mechanism, the second rotating mechanism and the light source module. According to the utility model, a rotating shaft driven by the radar is changed into rotation of the internal reflector, so that space and size are greatly saved. The first motor and the second motor also adopt micro motors with low power consumption, the electrical load is greatly optimized, and a rotating structure is integrated in the product, so that the protection level of the product is greatly improved.

Description

Technical Field

[0001] The present disclosure relates to the field of radar technology, and in particular, to a 3D micro radar. Background Art

[0002] A 3D radar, also known as a three-dimensional radar, is a radar system that can provide information on the distance, direction, and height of an object.

[0003] Currently, 3D scanning products based on radar are relatively large in volume and weight; moreover, most of the radar and the shaft that drives the radar to rotate are separately controlled, requiring additional communication connections. Additionally, the shaft that usually drives the radar to rotate has a large load and needs to drive the entire radar to operate. Most of the rotating shafts with large loads are exposed outside, and the corresponding protection level is not high. Summary of the Utility Model

[0004] The present disclosure provides a 3D micro radar to solve one of the technical problems recognized by the inventors.

[0005] The present disclosure provides a 3D micro radar, including a housing. Inside the housing, there are provided a main control circuit board, a first rotating mechanism, a second rotating mechanism, and a light source module. The first rotating mechanism and the second rotating mechanism are respectively arranged on the sides of the light source module. The first rotating mechanism is drivingly connected to a first reflector, and the first reflector is arranged above the light source module. The second rotating mechanism is drivingly connected to a second reflector, and the main control circuit board is electrically connected to the first rotating mechanism, the second rotating mechanism, and the light source module respectively.

[0006] Preferably, the first rotating mechanism includes a first motor bracket fixedly connected to the inside of the housing. A first motor is fixedly connected to the side of the first motor bracket. The output shaft of the first motor is fixedly connected to a first lens bracket, and the first lens bracket is arranged above the light source module. The first reflector is fixedly connected to the first lens bracket.

[0007] Preferably, the second rotating mechanism includes a second motor bracket fixedly connected to the inside of the housing. A second motor is fixedly connected to the surface of the second motor bracket. The output shaft of the second motor is fixedly connected to a second lens bracket, and the second reflector is fixedly connected to the second lens bracket.

[0008] Preferably, the surface of the second motor bracket is inclined.

[0009] Preferably, the housing includes a main body case. A partition is fixedly connected to the middle of the inner side of the main body case. The main control circuit board, the first rotating mechanism, and the second rotating mechanism are arranged on one side of the partition, and the light source module is arranged on the other side of the partition.

[0010] Preferably, a light-transmitting cover is provided at one end of the main housing close to the main control circuit board.

[0011] Preferably, a cover plate is provided at one end of the main housing close to the light source module, a power connector and a signal connector are embedded on the cover plate, and the power connector and the signal connector are electrically connected to the main control circuit board.

[0012] Preferably, the light source module includes a laser head, a converging lens and a receiving module. The partition is fixedly connected to a mounting cavity on one side close to the cover plate. The top of the mounting cavity passes through the partition. The converging lens cover is arranged at the top of the mounting cavity. The laser head is embedded in the middle of the converging lens. The receiving module is fixedly connected to the bottom of the mounting cavity at a position corresponding to the laser head.

[0013] Preferably, a side surface of the main housing is connected to a transfer bracket.

[0014] The main benefits of this disclosure are: The radar's rotational axis is replaced by the internal reflector's rotation, significantly saving space and size. The first and second motors also utilize low-power micromotors, significantly optimizing the electrical load. Furthermore, the rotating structure is integrated within the product, significantly improving the product's protection level.

[0015] The two rotating mechanisms of the utility model are both controlled by the same control module on the main control circuit board, so the communication is more stable.

[0016] It should be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily limiting of 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. Together, the description and the drawings serve to explain the principles of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. 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.

[0018] Figure 1 An exploded diagram of the radar structure according to an embodiment of the present disclosure;

[0019] Figure 2 Schematic diagram of the internal structure of a radar according to an embodiment of the present disclosure;

[0020] Figure 3 A cross-sectional view of the internal structure of a radar according to an embodiment of the present disclosure;

[0021] Figure 4 Schematic diagram of the first rotation mechanism according to an embodiment of the present disclosure;

[0022] Figure 5 Schematic diagram of the second rotation mechanism according to an embodiment of the present disclosure;

[0023] Figure 6 Schematic diagram of the radar working principle according to an embodiment of the present disclosure;

[0024] Icons: 1 - main body housing; 11 - partition board; 12 - installation cavity; 2 - main control circuit board; 3 - first rotation mechanism; 31 - first motor bracket; 32 - first motor; 33 - first lens bracket; 34 - first reflector; 4 - second rotation mechanism; 41 - second motor bracket; 42 - second motor; 43 - second lens bracket; 44 - second reflector; 5 - light source module; 51 - laser head; 52 - converging lens; 53 - receiving module; 6 - light-transmitting cover; 7 - cover plate; 71 - power connector; 72 - signal connector; 8 - adapter bracket. Detailed implementation manners

[0025] Next, the technical solutions of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments.

[0026] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

[0027] In the description of the present disclosure, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 thus should not be construed as a limitation of the present disclosure. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0028] In the description of the present disclosure, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0029] Embodiment

[0030] As Figures 1-5 shown, this embodiment provides a 3D micro radar, including a housing. Inside the housing, there are a main control circuit board 2, a first rotation mechanism 3, a second rotation mechanism 4, and a light source module 5. The first rotation mechanism 3 and the second rotation mechanism 4 are respectively arranged on the sides of the light source module 5. The first rotation mechanism 3 is drivingly connected to a first reflector 34, and the first reflector 34 is arranged above the light source module 5. The second rotation mechanism 4 is drivingly connected to a second reflector 44. The main control circuit board 2 is electrically connected to the first rotation mechanism 3, the second rotation mechanism 4, and the light source module 5 respectively. A control module for controlling the movement of the first rotation mechanism 3 and the second rotation mechanism 4 is integrated on the main control circuit board 2.

[0031] Among them, the housing includes a main body housing 1. One end of the main body housing 1 is covered with a light-transmitting cover 6, and the other end is fixedly installed with a cover plate 7 by bolts. Inside the main body housing 1, there is an integrally formed partition 11. The partition 11 divides the interior of the main body housing 1 into upper and lower cavities. The main control circuit board 2, the first rotation mechanism 3, and the second rotation mechanism 4 are arranged on the side of the partition 11 close to the light-transmitting cover 6, and the light source module 5 is arranged on the side of the partition 11 close to the cover plate 7.

[0032] Further, the cover plate 7 is embedded with a power connector 71 and a signal connector 72. The power connector 71 and the signal connector 72 are connected to the main control circuit board 2 through internal wiring. A power cord is connected through the power connector 71 to provide working power for the radar. A signal line is connected through the signal connector 72, and the radar information is received or control instructions are sent through a controller.

[0033] Specifically, the first rotation mechanism 3 includes a first motor bracket 31 fixedly installed inside the housing by bolts. A first motor 32 is fixedly connected to the side of the first motor bracket 31 by bolts. The first motor 32 is a micro motor in the prior art. The output shaft of the first motor 32 penetrates through the first motor bracket 31 and is fixedly connected to a first lens bracket 33 by bolts. The first reflector 34 is fixedly installed on the side of the first lens bracket 33. The first lens bracket 33 is arranged above the light source module 5. The first lens bracket 33 is driven by the first motor 32 to rotate, so as to realize the rotation of the first reflector 34, thereby changing the position of light reflection.

[0034] Similarly, the second rotating mechanism 4 includes a second motor bracket 41 fixedly installed inside the shell by bolts, and a second motor 42 is fixedly installed with bolts on the surface of the second motor bracket 41. The second motor 42 is a micro motor in the prior art. The output shaft of the second motor 42 is fixedly installed with a second lens bracket 43, and the side of the second lens bracket 43 is fixedly installed with the second reflector 44. The second lens bracket 43 is driven to rotate by the second motor 42, thereby driving the second reflector 44 to rotate, thereby realizing the change of the light reflection position.

[0035] Furthermore, the surface of the second motor bracket 41 is tilted at a certain angle so that the second reflector 44 is also tilted at a certain angle, so as to facilitate receiving and reflecting light to the outside.

[0036] Specifically, the light source module 5 includes a laser head 51, a converging lens 52, and a receiving module 53. A mounting cavity 12 is integrally formed on one side of the partition 11 near the cover plate 7. The top of the mounting cavity 12 passes through the partition 11. The converging lens 52 covers the top of the mounting cavity 12. The laser head 51 is embedded in the middle of the converging lens 52. The receiving module 53 is bolted to the bottom of the mounting cavity 12 at a position corresponding to the laser head 51. A light spot is emitted by the laser head 51, reflected by the first reflector 34 onto the second reflector 44, then reflected by the second reflector 44 and emitted from the light-transmitting cover 6. After hitting the surface of an object, the light spot is reflected back. After reflection by the second reflector 44 and the first reflector 34, the reflected light spot is finally converged by the converging lens 52 and received by the receiving module 53. The position of the corresponding point is obtained by time of flight.

[0037] Furthermore, an adapter bracket 8 is provided on the side of the main housing 1 , and bolt holes are provided on the adapter bracket 8 , through which the adapter bracket is installed and fixed.

[0038] The working principle of this utility model is as follows: Figure 6As shown, the light source emits a light spot through the laser head 51. After being reflected by the first mirror 34, it is reflected onto the second mirror 44, and then passes through the second mirror 44 and is reflected out through the transparent cover 6. The light spot reaches the object, and the light spot hitting the object is reflected back to the second mirror 44, then reflected by the second mirror 44 onto the first mirror 34, and then reflected by the first mirror 34 onto the converging lens 52. The light spot is converged onto the receiving module 53 by the converging lens 52, and the corresponding point position is obtained through the flight time of the light spot. The first motor 32 remains stationary, and the second motor 42 drives the second mirror 44 to rotate at high speed, and a single rotation profile of the housing is obtained; after the first motor 32 drives the first mirror 34 to rotate by a certain angle, the second motor 42 drives the second mirror 44 to continue rotating at high speed, and multiple sectional profiles can be obtained, thus realizing the 3D scanning of the radar.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, and not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A 3D micro radar, characterized in that, include: The shell comprises a main control circuit board, a first rotating mechanism, a second rotating mechanism and a light source module, wherein the first rotating mechanism and the second rotating mechanism are respectively arranged on the sides of the light source module, the first rotating mechanism is transmission-connected to a first reflector, the first reflector is arranged above the light source module, the second rotating mechanism is transmission-connected to a second reflector, and the main control circuit board is electrically connected to the first rotating mechanism, the second rotating mechanism and the light source module, respectively.

2. A 3D micro radar according to claim 1, characterized in that The first rotating mechanism includes a first motor bracket fixedly connected to the inside of the shell, a first motor is fixedly connected to the side of the first motor bracket, an output shaft of the first motor is fixedly connected to a first lens bracket, the first lens bracket is arranged above the light source module, and the first reflector is fixedly connected to the first lens bracket.

3. A 3D micro radar according to claim 1, characterized in that, The second rotating mechanism includes a second motor bracket fixedly connected to the inside of the shell, a second motor is fixedly connected to the surface of the second motor bracket, an output shaft of the second motor is fixedly connected to a second lens bracket, and the second reflector is fixedly connected to the second lens bracket.

4. A 3D micro radar according to claim 3, characterized in that, The surface of the second motor bracket is inclined.

5. A 3D micro radar according to claim 1, characterized in that The housing includes a main casing, a partition is fixedly connected to the middle of the inner side of the main casing, the main control circuit board, the first rotating mechanism and the second rotating mechanism are arranged on one side of the partition, and the light source module is arranged on the other side of the partition.

6. The 3D micro radar according to claim 5, characterized in that One end of the main casing close to the main control circuit board is covered with a light-transmitting cover.

7. A 3D micro radar according to claim 5, characterized in that, A cover plate is provided on one end of the main housing close to the light source module. A power connector and a signal connector are embedded on the cover plate. The power connector and the signal connector are electrically connected to the main control circuit board.

8. A 3D micro radar according to claim 7, characterized in that, The light source module includes a laser head, a converging lens and a receiving module. The partition is fixedly connected to a mounting cavity on one side close to the cover plate. The top of the mounting cavity passes through the partition. The converging lens cover is arranged at the top of the mounting cavity. The laser head is embedded in the middle of the converging lens. The receiving module is fixedly connected to the bottom of the mounting cavity and the position corresponding to the laser head.

9. A 3D micro radar according to claim 5, characterized in that, The side surface of the main casing is connected with an adapter bracket.

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