Ultrasonic radar system sensor positioning method

Through the 4PIN structure sensor automatic identification method, the problem of high costs and inaccurate fault positioning caused by the sensor ID configuration in the prior art relying on additional power circuits or daisy chain structures, and the automatic identification and positioning of sensor IDs with low cost and high reliability is achieved.

CN120263769APending Publication Date: 2025-07-04COLIGEN CHINA
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Patent Information

Application Number
CN202510406382.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-02
Publication Date
2025-07-04

AI Technical Summary

Technical Problem

In existing ultrasonic radar systems, sensor ID configuration relies on additional power circuits or daisy chain structures, resulting in high costs and inaccurate fault positioning.

Method used

A sensor with a 4PIN structure, one of which is fixed as a bus communication pin, and the other three PINs are defined as the power supply positive, power supply negative and ID detection pins in any order. The connection combination of PINs is configured to automatically identify the unique ID after power-on, and the unique identification and position of the sensor are determined by detecting the voltage status of the ID detection pin combined with the predefined connection combination and ID mapping relationship.

Benefits of technology

Automatic identification and positioning of sensors is realized, cost is reduced, system reliability and fault positioning accuracy are improved, and defects in additional power circuits and cascade structures are avoided.

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Abstract

The invention discloses an ultrasonic radar system sensor positioning method, which comprises the following steps that a sensor with a 4PIN structure is adopted, one PIN is fixed as a bus communication pin, and the other three PINs are respectively defined as a power supply positive pin, a power supply negative pin and an ID detection pin according to any sequence; the connection method of the ID detection pin comprises the following four states: connection with a positive power supply, connection with a negative power supply, suspension or parallel connection with a DSI3 bus; by configuring the connection combination of the other three PINs, each sensor automatically identifies a unique ID after being powered on; the unique identifier and position of the sensor are determined by detecting the voltage state of the ID detection pin and combining a predefined connection combination and ID mapping relation. According to the invention, on the basis of a 4PIN sensor structure, automatic identification and positioning of the sensor ID are realized through a flexible pin connection method.
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