Transmitting module, laser radar and related electronic equipment

By using histogram scaling design for coarse and fine measurements, lidar reduces storage area and cost without compromising ranging performance, solving the problem of high memory resource consumption in existing technologies and achieving efficient and accurate ranging for lidar.

CN121805982APending Publication Date: 2026-04-07SHENZHEN FUSHI TECH CO LTD
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Patent Information

Application Number
CN202512040502.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-12-31
Filing Date
2025-12-30
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing lidar requires statistical analysis of a large amount of ambient light noise and interference light signals during sensing, resulting in high memory resource consumption, high cost, and hindering chip miniaturization.

Method used

A histogram scaling design combining coarse and fine measurements is adopted. The signal peak position is initially determined by accumulating the optical flight time count using histograms with lower time resolution, and then the ranging accuracy is improved by accumulating local histograms with higher time resolution.

Benefits of technology

Without compromising ranging performance, the storage area of ​​the lidar receiver chip can be significantly reduced, thereby lowering chip costs.

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Abstract

The invention discloses a transmitting module, a laser radar and related electronic equipment. The invention provides a novel laser radar detection scheme, through histogram scaling design of rough measurement and fine measurement, light flight time counting is accumulated by a histogram with low time resolution, and the position of a signal peak corresponding to an object is generally determined; and then the local histogram with high time resolution is used to accumulate the light flight time counting to improve the distance measurement precision, and the design can greatly reduce the storage area of a laser radar receiving chip on the basis of not reducing the distance measurement performance, thereby reducing the chip cost.
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