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Software fault-tolerant method of character wheel direct reading error

A software fault-tolerant and character wheel technology, applied in the direction of volume indication and recording equipment, can solve the problems of blurred character wheel, direct reading error, and inability to read numbers, etc., and achieve good adaptability

Active Publication Date: 2012-08-22
CLOUDSENSE SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the basis of mechanical digital conversion of electronic numbers, when the digital wheel of the mechanical watch is carried from low to high, there is a fuzzy area in the digital wheel itself, so that the program cannot read the correct number
In addition, the photoelectric direct reading meter head is also susceptible to strong light interference, resulting in direct reading errors

Method used

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  • Software fault-tolerant method of character wheel direct reading error
  • Software fault-tolerant method of character wheel direct reading error

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with drawings and embodiments.

[0014] The thinking of the present invention is: compare the direct reading value of the character wheel with the default value, judge whether the direct reading error occurs in the character wheel, and then take corresponding measures. Specifically: a specific FLASH storage area is set up through the software program to store the default value of the word wheel reading. Instructions are modified and calibrated; when fault-tolerant processing occurs, the software sets the fault-tolerant flag and can upload the fault-tolerant information to the background. After disappearing, the program automatically clears the fault tolerance flag and resumes normal direct reading.

[0015] The following is a specific embodiment step, such as figure 1 Shown:

[0016] Step 1: The program reads the default value flash_value of the character wheel from FLASH;

[0017] Step 2: read zd_...

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Abstract

The invention provides a software fault-tolerant method of character wheel direct reading error. A specific FLASH storage region is opened up in a program by software for storing a character wheel reading default value, and each character wheel reading default value is compared with the default value for judgment of accuracy. The software fault-tolerant method aims at the problems of character wheel slant reading and character wheel fault-tolerance in the carry process caused by the factor that most of the direct reading gauge heads on the current market are easy to be obstructed by high light, mechanical character wheel value can be accurately read by utilizing the software fault-tolerant method on the basis of without changing a character wheel mechanical structure, and cumulative error does not exist. With the adoption of the software fault-tolerant method, the character wheel direct reading error can be corrected, fault-tolerant information is uploaded to the background, and reading change is continuously tracked by adopting the method of unit-order actual direct reading and high-order theoretical calculations after fault-tolerance so that the direct reading gauge head has good anti-interference performance.

Description

technical field [0001] The invention relates to a software fault-tolerant method for direct-reading errors of character wheels, in particular to a software fault-tolerant method for direct-reading errors of character wheels of photoelectric direct-reading gas meters, and belongs to the technical field of measurement and control. Background technique [0002] With the continuous improvement of science and technology, residential communities are gradually developing towards intelligence and digitalization. In recent years, wireless remote meter reading has been more and more applied to residential communities. At present, photoelectric direct reading meters occupy a large share in the market, and most of the photoelectric direct reading meters can achieve static reading of positive digits. However, as the basis for mechanical digital conversion of electronic numbers, when the digital wheel of the mechanical watch is carried from low to high, there is a fuzzy area in the digita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F15/06
Inventor 孙寒骏王平丁松金辰捷
Owner CLOUDSENSE SCI & TECH
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