超声波传感器及车辆
By setting multiple probes in the ultrasonic sensor and emitting ultrasonic waves of different frequencies simultaneously, the problem of not being able to receive echoes during probe aftershocks was solved, enabling more accurate and wider obstacle detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU AUTOMOBILE GROUP CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-17
AI Technical Summary
Existing ultrasonic sensors cannot receive echoes during core probe aftershocks, resulting in poor obstacle detection performance.
Multiple probes are used and operated synchronously to emit ultrasonic waves of different frequencies to reduce aftershock blind zones, and echoes are received during aftershocks through other probes.
It reduces the detection blind zone of ultrasonic sensors, improves the accuracy and range of obstacle detection, and reduces the impact of probe aftershocks on detection.
Smart Images
Figure CN224518967U_ABST
Abstract
Claims
1. An ultrasonic sensor, characterized in that, include: shell; A first probe core is connected to the outer shell. The first probe core has a positioning groove and is used to vibrate and emit a first ultrasonic wave. The second probe is disposed in the positioning groove and is used to vibrate and emit a second ultrasonic wave; Wherein, the frequency of the second ultrasonic wave is not equal to the frequency of the first ultrasonic wave; the aftershock blind zone distance of the first probe is greater than the aftershock blind zone distance of the second probe, but less than the upper limit of the detection distance of the second probe; Alternatively, the aftershock blind zone distance of the second probe is greater than the aftershock blind zone distance of the first probe, but less than the upper limit of the detection distance of the first probe.
2. The ultrasonic sensor of claim 1, wherein, Also includes: A first driver, connected to the first probe core, is used to drive the first probe core to vibrate; The second driver, connected to the second probe core, is used to drive the second probe core to vibrate; The first driver and the second driver are used to work synchronously so that the ultrasonic sensor can emit the first ultrasonic wave and the second ultrasonic wave simultaneously.
3. The ultrasonic sensor of claim 1, wherein, A first opening is formed on one side of the outer casing, and the first probe is disposed in the first opening and extends out of the outer casing along the thickness direction of the first probe.
4. The ultrasonic sensor of claim 3, wherein, The outer shell has a storage space inside, and the first opening is connected to the storage space; A first protruding ring is provided on the outer periphery of the first probe core. The first protruding ring is located within the storage space and is connected to the inner wall of the storage space to realize the connection between the first probe core and the outer shell.
5. The ultrasonic sensor of claim 1, wherein, Also includes: A protective sleeve is fitted over the first probe core, and the protective sleeve is made of flexible material.
6. The ultrasonic sensor of claim 5, wherein, The protective sleeve includes: A ring body is fitted onto the first probe core; The second convex ring is disposed on the outer periphery of the ring body and is used to abut against the outer shell.
7. The ultrasonic sensor of claim 6, wherein, The protective sleeve also includes: Multiple abutments are spaced apart along the direction surrounding the ring body, and are all located on the side of the second convex ring away from the outer shell. A guide surface is provided on the side of the abutment away from the ring body. The guide surface is a bevel or an arc surface. The guide surface is used to abut against the mounting groove provided on the vehicle body to guide the protective cover through the mounting groove.
8. The ultrasonic sensor of claim 2, wherein, The outer casing includes: The housing has a first opening and a second opening on its two sides, and a storage space is provided inside the housing. Both the first opening and the second opening are connected to the storage space. The first driver and the second driver are located in the storage space. The first probe is disposed in the first opening. A rear cover, connected to the housing, is used to close the second opening.
9. The ultrasonic sensor of claim 1, wherein, The number of the first probe cores is multiple, and the diameters of the multiple first probe cores are not equal; On the first probe core with the smallest diameter, the positioning groove is used to receive the second probe core; In the remaining first probe cores, the positioning groove on each first probe core is used to receive another first probe core that is adjacent to the first probe core and has a smaller diameter than the first probe core.
10. A vehicle characterized by comprising: include: Vehicle body; The ultrasonic sensor as described in any one of claims 1 to 9, wherein the ultrasonic sensor is mounted on the vehicle body and is used to detect obstacles near the vehicle.