Voltage sampling circuit, voltage acquisition device and electronic equipment

By coordinating the voltage divider module and the analog-to-digital converter module, the voltage divider ratio is adjusted to reduce errors, thereby improving the accuracy of the voltage sampling circuit and solving the problem of errors affecting sampling accuracy in existing technologies.

CN224459780UActive Publication Date: 2026-07-03UBTECH ROBOTICS CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
UBTECH ROBOTICS CORP LTD
Filing Date
2025-07-10
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

There are errors in the current ADC sampling and voltage conversion process, which affect the sampling accuracy.

Method used

A voltage divider module is used to divide the voltage at the sampling node. The voltage divider signal is converted into a digital signal by an analog-to-digital converter module. The upper limit value of the input signal of the analog-to-digital converter module is obtained by the voltage divider setting module, and the voltage division ratio is adjusted to reduce the error.

Benefits of technology

The measurement accuracy of the voltage sampling circuit was optimized, reducing the errors in sampling and numerical conversion.

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Abstract

This application belongs to the field of voltage acquisition technology, and provides a voltage sampling circuit, a voltage acquisition device, and an electronic device. The voltage divider module divides the voltage of the sampling node according to a preset voltage division ratio to obtain a sampled voltage divider signal. The analog-to-digital conversion module converts the sampled voltage divider signal into a digital sampling signal. The upper limit value of the input signal of the analog-to-digital conversion module is obtained through the voltage divider setting module, and the voltage division ratio of the voltage divider module is adjusted according to the upper limit value of the input signal to reduce sampling and numerical conversion errors and optimize the measurement accuracy of the voltage sampling circuit.
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