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Object detection device and object detection method

An object detection and object technology, which is applied to object detection devices and the field of object detection, and can solve problems such as affecting the accuracy of object detection and not being considered.

Active Publication Date: 2021-12-03
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the transmission strength of the transmission wave and the reception sensitivity of the reception wave of the ultrasonic sensor are affected by the temperature of the ultrasonic sensor itself, this will affect the detection accuracy of the object.
However, in prior art, this is not considered

Method used

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  • Object detection device and object detection method
  • Object detection device and object detection method
  • Object detection device and object detection method

Examples

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Embodiment Construction

[0015] Hereinafter, an embodiment in which an object detection device that is one aspect of the present invention will be described with reference to the drawings. In this embodiment, an example in which the object detection device is applied to a vehicle system that detects objects existing around the own vehicle by transmitting and receiving ultrasonic waves from an ultrasonic sensor mounted on the own vehicle will be described.

[0016] Such as figure 1 , figure 2 As shown, the vehicle system 100 mounted on the host vehicle 50 includes an ultrasonic sensor 10 , an ECU 20 , an outside air temperature sensor 31 , a braking device 41 , an alarm device 42 , and the like. They are connected in a communicable manner with each other via electrical signal lines.

[0017] The ultrasonic sensor 10 transmits ultrasonic waves in a predetermined frequency band (for example, a range of 20 to 100 kHz) as transmission waves. In addition, the ultrasonic sensor 10 receives reflected wave...

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Abstract

The invention relates to an object detection device and an object detection method. The object detection device includes an object detection unit that, when receiving, as a reception wave, a reflected wave formed by an object reflecting ultrasonic waves transmitted from the ultrasonic sensor (10) as a transmission wave, detects the existence of Objects around the vehicle. The object detection device is provided with a temperature sensor (13) for obtaining the temperature of the ultrasonic sensor (10), and based on the detection value of the temperature of the ultrasonic sensor (10), corrects the receiving sensitivity of the ultrasonic sensor (10) for receiving waves and the transmission strength of the transmitting wave at least one of the Then, objects are detected using the corrected received waves.

Description

technical field [0001] The present invention relates to an object detection device and an object detection method for detecting an object existing around an own vehicle by transmitting and receiving ultrasonic waves using an ultrasonic sensor. Background technique [0002] Conventionally, there is known an object detection device that detects an object existing around a host vehicle based on the received wave when a transmission wave is transmitted from an ultrasonic sensor and a reflected wave from an object is received as a received wave. In such a device, the reception sensitivity of the wave received by the ultrasonic sensor changes under the influence of the temperature of the outside air. Therefore, for example, Patent Document 1 proposes to suppress variations in object detection accuracy due to the influence of the outside air temperature by correcting the receiving sensitivity of the ultrasonic sensor based on the outside air temperature detection value of the outsi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S15/931B60R21/0134H04R3/00
CPCG01S15/931G01S7/521G01S7/524G01S7/526G01S15/87G01S2007/52007G01S7/52006G01S2015/938
Inventor 野村卓也松浦充保原田岳人
Owner DENSO CORP