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Automobile ultrasonic sensor

A sensor and ultrasonic technology, applied in the field of automotive electronic equipment, can solve the problems of poor anti-interference ability, false alarm, and large size of the system, and achieve the effects of increasing aesthetics, improving reliability, and reducing design requirements.

Inactive Publication Date: 2009-08-26
余晓鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an ultrasonic sensor, which overcomes the technical problems of large size, poor anti-interference ability of the system, and frequent malfunctions such as false alarms in the background technology.

Method used

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  • Automobile ultrasonic sensor
  • Automobile ultrasonic sensor
  • Automobile ultrasonic sensor

Examples

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Embodiment Construction

[0032] Please check Figure 1A , Figure 1B , figure 2 as well as image 3 , an ultrasonic sensor, which includes a shell 1, a rubber sleeve 2, a back cover 3, a buckle 4, a sponge block 5, a probe 6, a built-in circuit 7, a connector 8 and a silica gel 9.

[0033] Please check Figure 1A , figure 2 as well as Figure 5A , the shell 1 is in the shape of a sleeve, and the outer peripheral surface of the sleeve is evenly spaced with four buckle grooves 12, the buckle grooves 12 are axial dovetail grooves, the rear end 12A of which communicates with the rear end surface of the shell 1 to form an opening, and the opening The tail is rounded 12C to facilitate insertion. The housing 1 is mainly used to provide an installation carrier for internal components, and to provide a fixing mechanism for the assembly of the ultrasonic sensor on the automobile bumper.

[0034] Please check Figure 1A , Figure 1B as well as figure 2 , The rear cover 3 is installed on the rear end su...

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PUM

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Abstract

The invention discloses an ultrasonic sensor, which is applied to a car's reversing radar or forward radar device. It at least includes a casing, a rear cover, a probe, a built-in circuit, a connector and a buckle. The signal connection between the probe and the built-in circuit is are installed in the housing, the connector signal is connected to the built-in circuit and the structure is connected to the back cover; the outer peripheral surface of the housing is provided with a snap groove, and the back cover is provided with a post; the above post and the snap slot are tightly matched to The shell and the back cover are fixed together, and the above-mentioned buckle and the buckle groove are closely matched to fix the shell and the buckle together. The technical scheme of the invention has small size, strong anti-interference ability of the system and no false alarm and other abnormal operation phenomena.

Description

technical field [0001] The invention relates to an automobile electronic device, in particular to an ultrasonic sensor for backing up or moving forward in an automobile. Background technique [0002] At this stage, the vast majority of car reversing radars or forward radars use ultrasonic waves to work, and the basic principle is the same as the echolocation function principle of bats, dolphins and other animals in nature. Sound is a kind of wave. The frequency range of sound that our human ears can hear is generally 20Hz-20KHz. If it exceeds 20KHz, people cannot hear it. It is called ultrasound. The propagation speed of ultrasonic waves in the air is also equal to the speed of sound (340 m / s); when ultrasonic waves encounter obstacles, they will generate echoes, so by calculating the time difference between emission and reception, the distance between the emission site and the obstacle can be calculated. The reversing radar system controls multiple ultrasonic sensors to wo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S15/08G01S15/93
Inventor 余晓鹏
Owner 余晓鹏