Radar device and mobile platform

Patent metadata

Field	Value
Publication number	US-12038526-B2
Application number	US-202217707904-A
Country	US
Kind code	B2
Filing date	Mar 29, 2022
Priority date	Sep 30, 2019
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A radar device includes a radar base and a radar module. The radar module is mounted at the radar base and configured to rotate relative to the radar base around a rotation axis. The radar module includes an antenna assembly, a signal processing circuit board, and a rotation installation base. The antenna assembly and the signal processing circuit board are arranged oppositely at an interval and jointly enclose to form an accommodation space. The rotation installation base is connected to the antenna assembly and the signal processing circuit board and is located in the accommodation space. The radar base is at least partially located in the accommodation space and arranged opposite to the rotation installation base.

First claim

What is claimed is:

1. A radar device comprising:
a radar base;
a radar module mounted at the radar base and configured to rotate relative to the radar base around a rotation axis, the radar module including:
an antenna assembly;
a signal processing circuit board, the antenna assembly and the signal processing circuit board being arranged oppositely at an interval and jointly enclosing to form an accommodation space; and
a rotation installation base connected to the antenna assembly and the signal processing circuit board, and located in the accommodation space, rotation of the rotation installation base driving the antenna assembly and the signal processing circuit board to rotate around the rotation axis;

a first signal assembly arranged at the radar base; and
a second signal assembly arranged at the radar module;
wherein:
the radar base is at least partially located in the accommodation space and arranged opposite to the rotation installation base;

wherein the first signal assembly is configured to be communicatively connected to an external apparatus; and
the first signal assembly and the second signal assembly are configured to be wirelessly connected to each other to establish a wireless communication connection between the radar module and the external apparatus.

2. The radar device of claim 1 , wherein the antenna assembly and the signal processing circuit board have a substantially same weight.

3. The radar device of claim 1 , wherein the antenna assembly includes an antenna plate and a radiation sheet arranged at the antenna plate.

4. The radar device of claim 3 , wherein the antenna plate is substantially parallel to the signal processing circuit board.

5. The radar device of claim 1 , further comprising:
a wireless power transmission assembly arranged at the radar base; and
a wireless power reception assembly arranged at the radar module;
wherein the wireless power transmission assembly is wirelessly connected to the wireless power reception assembly to supply power to the radar module.

6. The radar device of claim 5 , wherein:
the wireless power transmission assembly includes a first wireless coil;
the wireless power reception assembly includes a second wireless coil; and
the first wireless coil is coupled to the second wireless coil.

7. The radar device of claim 6 , wherein axes of the first wireless coil and the second wireless coil substantially coincide with the rotation axis of the radar module.

8. The radar device of claim 6 , further comprising:
a motor including a stator and a rotor rotatable relative to the stator, the radar module being fixedly connected to the rotor, and the stator being fixed to the radar base.

9. The radar device of claim 8 , wherein the rotor rotates synchronously with a rotation shaft.

10. The radar device of claim 8 , wherein:
a housing is arranged at an upper portion of the radar base;
the stator is fixed to the housing;
the wireless power transmission assembly and the wireless power reception assembly are located in the housing;
the wireless power transmission assembly is fixedly connected to the housing; and
the wireless power reception assembly is fixedly connected to the rotor.

11. The radar device of claim 10 , wherein the rotor is located above the housing and fixed under the rotation installation base.

12. The radar device of claim 8 , wherein:
the rotor includes a rotor bracket that includes a hollow rotor shaft; and
the second signal assembly is arranged in the hollow rotor shaft.

13. The radar device of claim 1 , wherein:
the first signal assembly includes a first transmission antenna;
the second signal assembly includes a second transmission antenna; and
the first transmission antenna is configured to be coupled to the second transmission antenna.

14. The radar device of claim 13 , wherein:
the first transmission antenna and the second transmission antenna are linear; and
axes of the first transmission antenna and the second transmission antenna substantially coincide with the rotation axis of the radar module.

15. The radar device of claim 1 , further comprising:
a signal transmission module and a signal processing module;
wherein the signal transmission module is electrically connected to the antenna assembly, the signal processing module, the wireless power reception assembly, and the second signal assembly.

16. The radar device of claim 15 , wherein the signal processing module is arranged at the signal processing circuit board or the rotation installation base.

17. The radar device of claim 1 , wherein a maximum cross-sectional dimension of the radar base is larger than a lateral dimension of the radar module.

18. A radar device comprising:
a radar base;
a radar module mounted at the radar base and configured to rotate relative to the radar base around a rotation axis; and
a motor including a stator and a rotor rotatable relative to the stator, the radar module being fixedly connected to the rotor;
wherein:
a housing is arranged at an upper portion of the radar base;
the stator is fixed to the housing;
a wireless power transmission assembly and a wireless power reception assembly are located in the housing;
the wireless power transmission assembly is fixedly connected to the housing;
the wireless power reception assembly is fixedly connected to the rotor; and
the wireless power transmission assembly is wirelessly connected to the wireless power reception assembly to supply power to the radar module.

19. A radar device comprising:
a radar base;
a radar module mounted at the radar base and configured to rotate relative to the radar base around a rotation axis, the radar module including:
an antenna assembly;
a signal processing circuit board; and
a rotation installation base connected to the antenna assembly and the signal processing circuit board, rotation of the rotation installation base driving the antenna assembly and the signal processing circuit board to rotate around the rotation axis;

a first signal assembly arranged at the radar base; and
a second signal assembly arranged at the radar module;
wherein the first signal assembly is configured to be communicatively connected to an external apparatus; and
wherein the first signal assembly and the second signal assembly are configured to be wirelessly connected to each other to establish a wireless communication connection between the radar module and the external apparatus.

Assignees

• Sz Dji Technology Co Ltd

Inventors

• Zhou Wanren
• Wang Chunming
• Gao Di
• Zhang Wenkang

Classifications

• G01S13/931

  of land vehicles · CPC title

• H02K11/0094

  Structural association with other electrical or electronic devices · CPC title

• H02K7/14 Primary

  Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) · CPC title

• H01Q1/3233

  particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems · CPC title

• H01Q1/247

  with frequency mixer, e.g. for direct satellite reception or Doppler radar · CPC title