Novel vehicle-mounted PMCW millimeter wave radar device

Abstract

The utility model relates to the technical field of millimeter-wave radars, in particular to a novel vehicle-mounted PMCW millimeter-wave radar device which comprises a shell, a mounting groove is formed in the inner wall of the bottom of the shell, a motor is mounted on the inner wall of one side of the mounting groove, and one end of an output shaft of the motor is connected with a two-way screw through a coupler. A first sliding rod is connected to the outer wall of one side of the two-way screw through threads, and a second sliding rod is connected to the outer wall of the other side of the two-way screw through threads. Through the transmission of the two groups of racks and gears, the directions of the first radar device body and the second radar device body are separately controlled, so that the two radar devices not only can perform target detection on the left and right sides of a vehicle simultaneously, but also can perform target detection on the front and rear sides of the vehicle synchronously, and the directions of the two radars are always opposite. The detection range is wider, detection dead angles are avoided, and the use efficiency of the millimeter wave radar is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of millimeter wave radars, in particular to a novel vehicle-mounted PMCW millimeter wave radar device. Background Art

[0002] The vehicle-mounted millimeter-wave radar transmits millimeter waves through the antenna, receives the target's reflected signal, and after post-processing, quickly and accurately obtains the physical environment information around the car body. It then tracks and identifies and classifies the target based on the detected object information, and then combines the body dynamic information for data fusion, and finally performs intelligent processing through the central processing unit.

[0003] A Chinese patent with publication number CN211809375U was searched and disclosed, which is a vehicle-mounted millimeter-wave radar device. By setting a gear bar and two rotating shafts, the radar device can be driven to rotate back and forth, and can simultaneously detect targets in the front, rear and both sides of the vehicle, thereby improving the safety of vehicle driving. By setting a strong adsorption magnet, the radar device can be adsorbed on the top of the vehicle, and it is not easy to fall off even if the driving road conditions are complicated, thereby extending the service life of the device.

[0004] Based on the above search and combined with the prior art, it is found that the above patent has certain defects. The two radar devices are driven to rotate by the same gear, and can only detect targets on the left and right sides of the vehicle at the same time. When detecting the front or rear of the vehicle, the two radar devices will rotate to the front or rear at the same time for detection, and cannot be rotated separately to both sides to synchronously detect targets in the front and rear. It is not convenient to use and reduces the efficiency of the millimeter wave radar. Utility Model Content

[0005] The purpose of the utility model is to provide a novel vehicle-mounted PMCW millimeter wave radar device to solve the problems raised in the above background technology.

[0006] The technical solution of the utility model is: a novel vehicle-mounted PMCW millimeter-wave radar device, comprising a shell, a bottom inner wall of the shell is provided with a mounting groove, an inner wall on one side of the mounting groove is provided with a motor, one end of the motor output shaft is connected with a bidirectional screw through a coupling, an outer wall on one side of the bidirectional screw is connected with a sliding rod 1 through a thread, and an outer wall on the other side of the bidirectional screw is connected with a sliding rod 2 through a thread, the inner wall of the shell is fixedly connected with a fixing frame 1 and a fixing frame 2 in sequence from top to bottom, a gear 1 is rotatably provided on the outer wall of the bottom end of the fixing frame 1, a gear 2 is rotatably provided on the outer wall of the bottom end of the fixing frame 2, a rack 1 is fixedly connected to an outer wall on one side of the top of the sliding rod 1, a rack 2 is fixedly connected to an outer wall on one side of the top of the sliding rod 2, a radar device body 1 is installed on the top outer wall of the gear 1, and a radar device body 2 is installed on the top outer wall of the gear 2.

[0007] Preferably, the gear 1 is meshed with the rack 1, and the gear 2 is meshed with the rack 2.

[0008] Preferably, both side outer walls of the top end of the second fixing frame are provided with sliding grooves, and the sliding rod 1 and the sliding rod 2 are slidably connected to the inner walls of the two sliding grooves respectively.

[0009] Preferably, the outer walls of the radar device body 1 and the radar device body 2 are both equipped with detection heads, the inner wall of the shell is provided with two annular grooves, and the detection heads are slidably connected to the inner walls of the two annular grooves respectively.

[0010] Preferably, a circular groove is formed on the outer wall of the bottom end of the shell, and a strong magnet is fixedly connected to the inner wall of the circular groove.

[0011] Preferably, a wiring port is provided on the bottom outer wall of the shell, and a protective cover is fixedly connected to the top outer wall of the shell.

[0012] The utility model provides a novel vehicle-mounted PMCW millimeter wave radar device through improvement, which has the following improvements and advantages compared with the prior art:

[0013] The utility model is provided with a shell, a sliding rod 1, a sliding rod 2, a gear 1 and a gear 2. When it is necessary to detect targets on the left and right sides of the vehicle, the motor is started to control the rotation of the bidirectional screw, the sliding rod 1 and the sliding rod 2 are separated, the rack 1 on the sliding rod 1 drives the gear 1 to rotate counterclockwise, the radar device body 1 rotates to point to one side of the vehicle, and similarly, the sliding rod 2 drives the radar device body 2 to rotate to point to the other side of the vehicle through the meshing of the rack 2 and the gear 2, so that the detection of targets on the left and right sides of the vehicle is completed synchronously. When it is necessary to detect the front and rear of the vehicle, the motor controls the bidirectional screw to rotate in the opposite direction, so that the radar device body The radar device body 1 and the radar device body 2 rotate in opposite directions to both sides, the radar device body 1 is aimed at the front for detection, and the radar device body 2 is aimed at the rear for detection. The radar device body 1 and the radar device body 2 are arranged oppositely, and the directions of the radar device body 1 and the radar device body 2 are separately controlled through the transmission of two sets of racks and gears, so that the two radar devices can not only detect targets on the left and right sides of the vehicle at the same time, but also detect targets in front and behind the vehicle synchronously. The two radars are always in opposite directions, the detection range is wider, and the detection blind spots are avoided, thereby improving the use efficiency of the millimeter wave radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model;

[0016] Figure 2It is a schematic diagram of the bidirectional screw connection structure of the utility model;

[0017] Figure 3 It is a schematic diagram of a sliding rod-connecting structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the second connection structure of the sliding rod of the utility model.

[0019] Description of reference numerals:

[0020] 1. Casing; 2. Annular groove; 3. Motor; 4. Strong magnet; 5. Bidirectional screw; 6. Sliding rod 1; 7. Sliding rod 2; 8. Fixed frame 1; 9. Fixed frame 2; 10. Radar device body 1; 11. Radar device body 2; 12. Rack 1; 13. Gear 1; 14. Rack 2; 15. Gear 2. DETAILED DESCRIPTION

[0021] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides a novel vehicle-mounted PMCW millimeter wave radar device through improvement. The technical solution of the utility model is:

[0023] like Figure 1-Figure 4 As shown, a novel vehicle-mounted PMCW millimeter wave radar device includes a shell 1, a mounting groove is opened on the bottom inner wall of the shell 1, a motor 3 is installed on the inner wall of one side of the mounting groove, one end of the output shaft of the motor 3 is connected to a bidirectional screw 5 through a coupling, one side outer wall of the bidirectional screw 5 is threadedly connected to a sliding rod 1 6, and the other side outer wall of the bidirectional screw 5 is threadedly connected to a sliding rod 2 7, the inner wall of the shell 1 is fixedly connected with a fixing frame 1 8 and a fixing frame 2 9 in sequence from top to bottom, a gear 13 is rotatably provided on the bottom outer wall of the fixing frame 1 8, and a gear 2 15 is rotatably provided on the bottom outer wall of the fixing frame 2 9, a rack 12 is fixedly connected to one side outer wall of the top of the sliding rod 1 6, and a rack 2 14 is fixedly connected to one side outer wall of the top of the sliding rod 2 7, a radar device body 10 is installed on the top outer wall of the gear 13, and a radar device body 2 11 is installed on the top outer wall of the gear 2 15.

[0024] Furthermore, gear 1 13 is meshed with rack 1 12, gear 2 15 is meshed with rack 2 14, and sliding grooves are provided on the outer walls on both sides of the top of the fixed frame 2 9. The sliding rod 1 6 and the sliding rod 2 7 are respectively slidably connected to the inner walls of the two sliding grooves. The outer walls of the radar device body 1 10 and the radar device body 2 11 are both equipped with detection heads. Two annular grooves 2 are provided on the inner wall of the outer shell 1, and the detection heads are respectively slidably connected to the inner walls of the two annular grooves 2.

[0025] Furthermore, a circular groove is provided on the outer wall of the bottom end of the shell 1, a strong magnet 4 is fixedly connected to the inner wall of the circular groove, a wiring port is provided on the bottom outer wall of the shell 1, a protective cover is fixedly connected to the top outer wall of the shell 1, and the shell 1 is fixed to the top of the vehicle by the strong magnet 4. The strong magnet 4 makes the structure more stable and not easy to fall off, and the protective cover arranged in an arc shape on the top protects the shell 1.

[0026] Working principle: When in use, the housing 1 is fixed to the top of the vehicle by a strong magnet 4, and the radar device body 10 and the radar device body 2 11 are connected to the gear 13 and the gear 2 15 on the fixing frame 1 8 and the fixing frame 2 9 respectively. The radar device body 10 and the radar device body 2 11 are set in opposite directions during installation. When it is necessary to detect targets on the left and right sides of the vehicle, the motor 3 is started to control the rotation of the bidirectional screw 5, the sliding rod 1 6 and the sliding rod 2 7 are separated, and the rack 12 on the sliding rod 1 6 drives the gear 13 to rotate counterclockwise, and the radar device body 10 rotates to point to one side of the vehicle. Similarly, the sliding rod 27 drives the radar device body 2 1 through the meshing of the rack 2 14 and the gear 2 15. 1 rotates to point to the other side of the vehicle, and synchronously completes target detection on the left and right sides of the vehicle. When it is necessary to detect the front and rear of the vehicle, the motor 3 controls the bidirectional screw 5 to rotate in the opposite direction, so that the radar device body 10 and the radar device body 2 11 rotate in the opposite direction to both sides. The radar device body 10 is aimed at the front for detection, and the radar device body 2 11 is aimed at the rear for detection. The sliding rod 1 6 and the sliding rod 2 7 slide in the sliding grooves provided on the fixing frame 2 9 respectively, and are limited to ensure stable movement. The annular groove 2 provided in the shell 1 supports the detection heads on the radar device body 10 and the radar device body 2 11 to ensure the stability of the radar device body 10 and the radar device body 2 11.

[0027] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A novel vehicle-mounted PMCW millimeter wave radar device, comprising a housing (1), characterized in that: The bottom inner wall of the housing (1) is provided with an installation groove, and a motor (3) is installed on the inner wall of one side of the installation groove. One end of the output shaft of the motor (3) is connected to a bidirectional screw (5) via a coupling, and the outer wall of one side of the bidirectional screw (5) is connected to a sliding rod (1) via a thread, and the outer wall of the other side of the bidirectional screw (5) is connected to a sliding rod (2) via a thread. The inner wall of the housing (1) is fixedly connected to a fixing frame (1) and a fixing frame (2) in sequence from top to bottom. The outer wall at the bottom end of the fixed frame 1 (8) is rotatably provided with a gear 1 (13); the outer wall at the bottom end of the fixed frame 2 (9) is rotatably provided with a gear 2 (15); the outer wall at one side of the top of the sliding rod 1 (6) is fixedly connected with a rack 1 (12); the outer wall at one side of the top of the sliding rod 2 (7) is fixedly connected with a rack 2 (14); the outer wall at the top end of the gear 1 (13) is installed with a radar device body 1 (10); the outer wall at the top end of the gear 2 (15) is installed with a radar device body 2 (11).

2. The novel vehicle-mounted PMCW millimeter wave radar device according to claim 1 is characterized in that: The gear one (13) is meshed with the rack one (12), and the gear two (15) is meshed with the rack two (14).

3. The novel vehicle-mounted PMCW millimeter wave radar device according to claim 1 is characterized in that: The outer walls on both sides of the top of the second fixing frame (9) are provided with sliding grooves, and the sliding rod one (6) and the sliding rod two (7) are respectively slidably connected to the inner walls of the two sliding grooves.

4. The novel vehicle-mounted PMCW millimeter wave radar device according to claim 1 is characterized in that: The outer walls of the radar device body 1 (10) and the radar device body 2 (11) are both equipped with detection heads, the inner wall of the shell (1) is provided with two annular grooves (2), and the detection heads are respectively slidably connected to the inner walls of the two annular grooves (2).

5. The novel vehicle-mounted PMCW millimeter wave radar device according to claim 1 is characterized in that: A circular groove is formed on the outer wall of the bottom end of the housing (1), and a strong magnet (4) is fixedly connected to the inner wall of the circular groove.

6. The novel vehicle-mounted PMCW millimeter wave radar device according to claim 1 is characterized in that: The bottom outer wall of the shell (1) is provided with a wiring port, and the top outer wall of the shell (1) is fixedly connected with a protective cover.

Images