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Object detection sensor with radome cover configuration to reduce transmitter-receiver couplings

A technology of receivers and transmitters, which can be used in antennas, use re-radiation, antenna components, etc., and can solve problems such as increasing the cost of sensors

Pending Publication Date: 2020-10-09
APTIV TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this approach introduces additional assembly process steps and increases the cost of the sensor

Method used

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  • Object detection sensor with radome cover configuration to reduce transmitter-receiver couplings
  • Object detection sensor with radome cover configuration to reduce transmitter-receiver couplings
  • Object detection sensor with radome cover configuration to reduce transmitter-receiver couplings

Examples

Experimental program
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Embodiment Construction

[0032] figure 1 The sensor 20 supported on the vehicle 22 is schematically shown. The sensor 20 may be used for object detection, for example, to provide automatic or semi-automatic control of one or more aspects of the operation of the vehicle 22. For example, the sensor 20 may be used for adaptive cruise control, autonomous vehicle driving, or driver assistance features.

[0033] In the example shown, the sensor 20 operates based on known radio detection and ranging (radar) signaling techniques. Each sensor 20 includes a transmitter 24 that emits radiation or radar signals away from the sensor 20. Each sensor 20 includes a receiver 26 that receives radar signals reflected from an object in the field of view of the sensor 20. The radome or cover 28 provides protection from the environment for the sensor assembly including the transmitter 24 and receiver 26. For the purpose of performing object detection or identification in a generally known manner, the sensor 30 controls the...

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PUM

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Abstract

An illustrative example sensor device (20) includes a transmitter (24) and a receiver (26) having at least one lobe (38) and at least null (40, 42). A cover (28) near the transmitter (24) and the receiver (26) includes a surface (60) facing toward the transmitter (24) and the receiver (26). The surface (60) is at an angle relative to the receiver (26) to direct at least some radiation (56) transmitted by the transmitter (24) and reflected from the surface (60) toward the at least one null (40,42) of the receiver (26).

Description

Background technique [0001] Various sensor types have proven to be useful for detecting objects in the vicinity of the vehicle or objects in the vehicle path. Example sensor types include ultrasound, radio detection and ranging (radar), and light detection and ranging (lidar). Many of these sensors include transmitters and receivers. The cover usually protects the sensor assembly. Sometimes the cover is called a radome. [0002] Given the constraints of compact packaging on automotive sensors, the radome or cover is usually very close to the transmitter and receiver of the sensor. The radome or cover introduces a close reflection path from the transmitter to the receiver. Such reflections are received in the sensor as a strong tone close to DC. Such close reflections also contribute to the total noise floor of the sensor. [0003] One way to deal with such close reflections is to use a high-pass filter to remove tones close to DC. However, this method does not address the inc...

Claims

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Application Information

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IPC IPC(8): G01S13/931G01S7/02
CPCG01S13/931G01S7/023G01S2013/9321G01S7/027G01S7/2813H01Q1/42H01Q1/3233H01Q1/525G01S7/038H01Q1/421
Inventor 彭政谕J·F·瑟西
Owner APTIV TECH LTD