Detection voltage calibration method and system for data processing equipment

A technology for data processing equipment and voltage calibration, applied in the direction of data processing power supply, etc., can solve problems such as abnormal equipment voltage detection related functions, equipment quality control problems, and overall equipment cost increase, etc., to achieve outstanding substantive characteristics, low cost, Significant progress

Active Publication Date: 2021-04-16
SHANDONG ZHONGFU INFORMATION IND +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual mass production process of equipment, whether it is adding a reference voltage calibration circuit in the circuit design or adding additional equipment for the reference voltage calibration process in the mass production process will lead to an increase in the overall cost of the equipment, which does not meet the requirements of low-cost products. Original cost design
The inconsistency of voltage detection in mass-produced equipment will lead to abnormal functions related to voltage detection of some equipment, and the performance of use is a problem with the quality control of the equipment

Method used

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Embodiment Construction

[0029] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0030] This embodiment provides a detection voltage calibration method for a data processing device. The data processing device selects a main control CPU (AS569) that supports AD detection. The CPU is low in cost and rich in functions, and can meet various functional requirements of the application device. The CPU's AD voltage value detection function has a high linearity accuracy, but the internal reference voltage has a certain error. When measuring the battery voltage, the internal reference voltage error of the chip will be amplified. In order to solve this problem, a charging chip (SGM4056) with charging indication function is selected in the charging circuit of the lithium battery. When the charging function is working, the charging indication IO is in a state. Switch to another state. The battery adopts a lithium battery with a protection board...

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PUM

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Abstract

The invention provides a detection voltage calibration method and system for data processing equipment, and the method comprises the steps: enabling the data processing equipment to be connected with an external power supply, and performing electrifying to start the data processing equipment; reading a built-in flag bit of the main control CPU to judge whether the current data processing equipment is in a detection voltage uncalibrated state or not, and if yes, starting an equipment charging detection mechanism and charging the lithium battery; and after the charging is completed, acquiring an AD value of the main control CPU, establishing a corresponding relationship between the AD value and the charging completion voltage of the lithium battery, recording the corresponding relationship in a storage area of the main control CPU, and setting the built-in identification bit as an identifier corresponding to the calibrated state according to a preset identification bit comparison table of the main control CPU. According to the invention, the voltage detection precision and consistency of the data processing equipment can be effectively improved.

Description

technical field [0001] The present invention relates to the technical field of voltage calibration, in particular to a detection voltage calibration method and system for data processing equipment. Background technique [0002] , with the continuous progress of society and the accelerated development of social informatization, the rapid growth of data and database applications, the basic role of data processing and the efficiency of data processing have attracted more and more attention. Various data processing devices have become necessary tools for human life, work and study. [0003] The data processing equipment includes a main control CPU, a lithium battery charging chip circuit and a lithium battery with a protection board. When the device is powered by batteries, the main control CPU needs to monitor the battery voltage. When the battery voltage is lower than the warning value, it will perform low voltage warning or low voltage protection to prevent the loss of key d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/28
CPCY02E60/10
Inventor 曾鸣曲志峰牛余晓韩建鹏
Owner SHANDONG ZHONGFU INFORMATION IND
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