Signal receiving method and device, medium, and radar system

Patent metadata

Field	Value
Publication number	US-2022404463-A1
Application number	US-202217895954-A
Country	US
Kind code	A1
Filing date	Aug 25, 2022
Priority date	Feb 26, 2020
Publication date	Dec 22, 2022
Grant date	—

Abstract

This application discloses a signal receiving method and device, a medium, and a radar system. The radar system includes: a window, a radar transmitter, a radar receiver, a processor, and a signal receiving circuit. The radar transmitter is configured to: transmit a radar detection signal to a front obstacle through the window. The radar receiver is connected to the signal receiving circuit, and receive a reflected signal generated by the obstacle, and transmit the reflected signal to the signal receiving circuit. The signal receiving circuit is connected to the processor, and when the radar transmitter transmits the radar detection signal, receive, after preset duration, the reflected signal where the preset duration is a sum of first duration required for the radar detection signal to arrive at the window and second duration required for the reflected signal to arrive at the radar receiver from the window.

First claim

1 . A radar system, comprising: a window, a radar transmitter, a radar receiver, a processor, and a signal receiver, wherein
the radar transmitter is configured to: transmit a radar detection signal, and transmit the radar detection signal to a front obstacle through the window; the radar receiver is connected to the signal receiver, and is configured to: receive a reflected signal generated when the radar detection signal encounters the front obstacle, and transmit the reflected signal to the signal receiver; the signal receiver is connected to the processor, and is configured to: when the radar transmitter transmits the radar detection signal, receive, after preset duration, the reflected signal transmitted by the radar receiver, convert the reflected signal into an electrical signal, and output the electrical signal to the processor, wherein the preset duration is a sum of first duration required for the radar detection signal to arrive at the window and second duration required for the reflected signal to arrive at the radar receiver from the window; and the processor is configured to process the electrical signal to obtain information about the front obstacle.

2 . The system according to claim 1 , wherein the signal receiver comprises: a control circuit and a converter;
the control circuit is configured to: connect to a power supply, receive electric energy output by the power supply, and when the radar transmitter transmits the radar detection signal, supply electric energy to the converter after the preset duration; and the converter is separately connected to the converter, the radar receiver, and the processor, and is configured to: when the control circuit supplies the electric energy, receive the reflected signal transmitted by the radar receiver, convert the reflected signal into the electrical signal, and output the electrical signal to the processor.

3 . The system according to claim 2 , wherein the control circuit comprises: an inductor, a diode, a first switch, and a first capacitor;
a first end of the inductor is configured to connect to a positive electrode of the power supply, and a second end of the inductor is connected to an anode of the diode; a cathode of the diode is separately connected to a first end of the first switch, a first end of the first capacitor, and the converter; and a second end of the first capacitor and a second end of the first switch are separately configured to connect to a negative electrode of the power supply.

4 . The system according to claim 2 , wherein the control circuit comprises: a first resistor, a second resistor, a second switch, and a second capacitor;
a first end of the first resistor is configured to connect to a positive electrode of the power supply, and a second end of the first resistor is separately connected to a first end of the second resistor, a first end of the second capacitor, and the converter; a second end of the second resistor is connected to a first end of the second switch; and a second end of the second switch and a second end of the second capacitor are separately configured to connect to a negative electrode of the power supply.

5 . The system according to claim 2 , wherein the control circuit comprises: a third switch, a fourth switch, and a third capacitor;
a first end of the third switch is configured to connect to a positive electrode of the power supply, and a second end of the third switch is separately connected to a first end of the fourth switch, a first end of the third capacitor, and the converter; and a second end of the fourth switch and a second end of the third capacitor are separately configured to connect to a negative electrode of the power supply.

6 . The system according to claim 2 , wherein the power supply comprises a plurality of sub-power supplies with different voltages;
the control circuit comprises: a fourth capacitor and a plurality of switches that are in a one-to-one correspondence with the plurality of sub-power supplies with different voltages, a first end of each of the plurality of switches is configured to connect to a positive electrode of the corresponding sub-power supply, and a second end of each of the plurality of switches is separately connected to a first end of the fourth capacitor and the converter; and a second end of the fourth capacitor is configured to connect to a negative electrode of each of the plurality of sub-power supplies.

7 . The system according to claim 2 , further comprising a signal amplifier, wherein
the signal amplifier is configured to connect to the converter and the processor, and the signal amplifier is configured to: amplify power of a signal output by the converter, and output the signal to the processor.

8 . The system according to claim 3 , further comprising a signal amplifier, wherein
the signal amplifier is configured to connect to the converter and the processor, and the signal amplifier is configured to: amplify power of a signal output by the converter, and output the signal to the processor.

9 . The system according to claim 4 , further comprising a signal amplifier, wherein
the signal amplifier is configured to connect to the converter and the processor, and the signal amplifier is configured to: amplify power of a signal output by the converter, and output the signal to the processor.

10 . The system according to claim 5 , further comprising a signal amplifier, wherein
the signal amplifier is configured to connect to the converter and the processor, and the signal amplifier is configured to: amplify power of a signal output by the converter, and output the signal to the processor.

11 . A signal receiving method, applied to a radar system, wherein the radar system comprises a window, a radar transmitter, a radar receiver, a processor, and a signal receiver, wherein
the radar transmitter is configured to: transmit a radar detection signal, and transmit the radar detection signal to a front obstacle through the window; the radar receiver is connected to the signal receiver, and is configured to: receive a reflected signal generated when the radar detection signal encounters the front obstacle, and transmit the reflected signal to the signal receiver; the signal receiver is connected to the processor, and wherein the method comprises:
receiving electric energy output by a power supply; and
when it is determined that the radar transmitter transmits a radar detection signal, supplying electric energy to the signal receiver after preset duration, wherein the signal receiver receives a reflected signal transmitted by the radar receiver, wherein the preset duration is a sum of first duration required for the radar detection signal to arrive at the window and second duration required for the reflected signal to arrive at the radar receiver from the window.

12 . The method according to claim 11 , wherein the preset duration is determined by performing the following steps:
determining a first distance between the radar transmitter and the window and a second distance between the radar receiver and the window; and determining the preset duration based on a transmission rate of the radar detection signal, the first distance, and the second distance.

13 . The method according to claim 11 , wherein the signal receiver comprises: a control circuit and a converter;
the control circuit is configured to: connect to a power supply, receive electric energy output by the power supply, and when the radar transmitter transmits the radar detection signal, supply electric energy to the converter after the preset duration; and the converter is separately connected to the con

Assignees

• Huawei Tech Co Ltd

Inventors

• Liu Yuan
• Xiong Wei
• Huang Ke
• Zhu Qi

Classifications

• G01S7/497 Primary

  Means for monitoring or calibrating · CPC title

• G01S7/527

  Extracting wanted echo signals {(Doppler systems G01S15/50)} · CPC title

• G01S7/4861

  Circuits for detection, sampling, integration or read-out · CPC title

• G01S7/52004

  Means for monitoring or calibrating (short-range imaging G01S7/5205) · CPC title

• G01S17/931

  of land vehicles · CPC title