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Signal calibration method and device, computer equipment and storage medium

A calibration method and signal technology, applied in analog/digital conversion calibration/test, code conversion, electrical components, etc., can solve the problem of inaccurate ADC sampling

Pending Publication Date: 2022-05-13
ZHEJIANG TENGEN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a signal calibration method, device, computer equipment and storage medium in order to overcome the deficiencies in the prior art, to solve the problem of inaccurate sampling of the ADC of the MCU

Method used

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  • Signal calibration method and device, computer equipment and storage medium
  • Signal calibration method and device, computer equipment and storage medium
  • Signal calibration method and device, computer equipment and storage medium

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Embodiment 1

[0046] see figure 1 , figure 1 A flow chart of a signal calibration method provided by an embodiment of the present invention is shown. figure 1 The signal calibration method in is applied to MCU, and described MCU is connected with reference voltage generating circuit, and described reference voltage generating circuit is used for inputting reference voltage signal to described MCU, figure 1 The signal calibration method in includes the following steps:

[0047] Step 101, receiving and collecting the reference voltage signal to obtain a first reference voltage sample value.

[0048] The reference voltage generating circuit is connected to the ADC sampling device of the MCU, and the reference voltage generating circuit is used to provide the required reference voltage for the ADC sampling device of the MCU, wherein the reference voltage refers to placing the ADC sampling device in a temperature field of 0°C, and The voltage value of the ADC sampling device when the rated op...

Embodiment 2

[0093] see Figure 5 , Figure 5 A schematic structural diagram of a signal calibration device provided by an embodiment of the present invention is shown. Figure 5 The signal calibrating device 300 in is applied to MCU, and described MCU is connected with reference voltage generating circuit, and described reference voltage generating circuit is used for inputting reference voltage signal to described MCU, and described signal calibrating device 300 comprises:

[0094] A voltage signal receiving module 310, configured to receive and collect the reference voltage signal to obtain a first reference voltage sampling value;

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Abstract

The invention provides a signal calibration method and device, computer equipment and a storage medium, the signal calibration method is applied to an MCU, the MCU is connected with a reference voltage generation circuit, the reference voltage generation circuit is used for inputting a reference voltage signal to the MCU, and the method comprises the following steps: receiving and collecting the reference voltage signal to obtain a first reference voltage sampling value; receiving and collecting the reference voltage signal and the detection signal of which the true value is a preset true value to obtain a second reference voltage sampling value and a first ADC sampling value; generating a calibration coefficient of the MCU according to the first reference voltage sampling value, the second reference voltage sampling value, the first ADC sampling value and a preset true value; receiving and collecting a reference voltage signal and a to-be-measured signal to obtain a third reference voltage sampling value and a second ADC sampling value; according to the first reference voltage sampling value, the third reference voltage sampling value, the second ADC sampling value and the calibration coefficient, the sampling value of the signal to be measured is calibrated, and the true value of the signal to be measured is obtained.

Description

technical field [0001] The invention relates to the field of signal acquisition, in particular to a signal calibration method, device, computer equipment and storage medium. Background technique [0002] ADC (Analog-to-Digital Converter, analog / digital converter) sampling technology is a commonly used signal acquisition technology for collecting analog signals such as sound, image and temperature. MCU (Microcontroller Unit, Microcontroller Unit) is also called a single-chip microcomputer, and an ADC sampling device is integrated inside. [0003] Generally, the reference voltage required by the ADC sampling device of the MCU is provided by a VCC (Volt Current Condenser, supply voltage) power supply. At the same time, the VCC power supply needs to provide rated working voltage for the processor, memory, counter and other devices of the MCU. During the operation of the MCU, the VCC power supply is easily disturbed. Specifically, the discreteness of the MCU components, the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/10
CPCH03M1/1009
Inventor 徐丽玲陈伟亮高平沈国峰陈广哲徐明陈晓军阳丹红
Owner ZHEJIANG TENGEN ELECTRIC