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A Method of Automatically Matching Multi-Range Switching Points

A range switching and automatic matching technology, which is applied in the direction of analog-to-digital converters, logic circuit connection/interface layout, etc., can solve the problems of reducing measurement accuracy, switching cannot be equipped according to theoretical values, etc., and achieve the effect of improving measurement accuracy

Active Publication Date: 2017-08-11
SHANGHAI YIDIAN SCI INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for automatically matching multi-range switching points in view of the technical defect that the existing multi-range measuring equipment cannot be equipped according to the theoretical value during the range switching process, which reduces the measurement accuracy. The optimal switching point of the range without crashing, improving the measurement accuracy

Method used

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  • A Method of Automatically Matching Multi-Range Switching Points
  • A Method of Automatically Matching Multi-Range Switching Points

Examples

Experimental program
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Embodiment

[0018] as attached figure 2 As shown, a method for automatically matching multi-range switching points is characterized in that it includes the following steps:

[0019] (1) Set the two gears as x1 and x10 respectively, define the range of x1 as sign A, and the range of x10 as sign B; the initial value variable of the switching point of the x1 range is V1, and the initial value of the switching point of the x10 range The variable is V10; the x10 range is switched to the symbol C;

[0020] (2) Set the flag A=1, set the range switching flag X=1, and complete the initial range switching;

[0021] (3) If the range switching flag X=1, the MCU micro-control unit will control the switching range. After the completion, clear the range switching flag X, and X=0; when the MCU micro-control unit switches to the range x10 gear, set the range gear Sign A = 1, sign C = 1, when the MCU micro-control unit controls to switch to the range x1 gear, set the range gear mark B = 1;

[0022] (4)...

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Abstract

A method for automatically matching a multi-range switching point, which includes five steps of setting the initial value of the range, completing the initial range switching, controlling the range switching, measuring and automatically adjusting the range switching point. The invention provides an automatic matching multi-range switching point The method of changing the range switching point cannot be correctly matched during the multi-range measurement in the past, resulting in a crash when the range is switched. The method of automatically matching the range of the present invention automatically matches the optimal switching point without crashing, and improves the measurement accuracy.

Description

technical field [0001] The invention belongs to the field of digital signal processing, and in particular relates to a method for automatically matching switching points of multi-range measuring equipment. Background technique [0002] At present, in many measurement occasions, the range of the measurement signal is very large, and the measurement range of the A / D analog-to-digital conversion chip is limited, usually 0-2000mV. In order to adapt to the large measurement range and ensure the measurement accuracy, multi-range switching is required. , as attached figure 1 As shown, taking two ranges as an example, including x1 range and x10 range, the MCU micro-control unit controls the conversion of the A / D analog-to-digital conversion chip, and the conversion result of the A / D analog-to-digital conversion chip automatically switches the range. Under normal circumstances, the range of the A / D analog-to-digital conversion chip is 0-2000mV, and the ideal switching point is: in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K19/0175H03M1/12
Inventor 魏乐樵
Owner SHANGHAI YIDIAN SCI INSTR