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A data verification and correction method for automobile instrument mileage

A technology for data verification and automotive instrumentation, applied in the automotive field, can solve problems such as data corruption, reduce frequency, increase service life, and solve data corruption effects

Active Publication Date: 2022-06-17
安徽天健环保车辆部件有限公司
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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 data verification and correction method for automobile instrument mileage, solve the problem of data damage in the process of data storage caused by abnormal working conditions, reduce the frequency of erasing and writing operations on the same storage address space, and improve the use of storage devices life

Method used

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  • A data verification and correction method for automobile instrument mileage
  • A data verification and correction method for automobile instrument mileage
  • A data verification and correction method for automobile instrument mileage

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0043] Example 1: as figure 1 As shown in the figure, a method for calibrating and correcting deviations with data of automobile instrument mileage includes the following steps:

[0044] Step 1: Use the mileage data segmentation method to divide the total mileage into full kilometer mileage data and non-full kilometer mileage data. The full kilometer mileage data is divided into multiple groups of data stored in the electrically erasable programmable memory EEPROM. In the address space, the cumulative sum of the data in all address spaces is the actual full kilometer mileage data;

[0045] The non-full kilometer mileage data includes the data frame header, valid data, verification data and data frame end. The electrically erasable programmable memory EEPROM is used to store the mileage data of the combination meter, and the data will not be lost after the system is powered off. ; The number of multiple groups of data is defined according to specific applications, and the mini...

Embodiment 2

[0072] Embodiment 2: as figure 2 As shown in the figure, a method for calibrating and correcting deviations with data of automobile instrument mileage includes the following steps:

[0073] Step 1: Use the mileage data segmentation method to divide the total mileage into full kilometer mileage data and non-full kilometer mileage data. The full kilometer mileage data is divided into multiple groups of data stored in the electrically erasable programmable memory EEPROM. In the address space, the cumulative sum of the data in all address spaces is the actual full kilometer mileage data;

[0074] Step 2: When the vehicle ignition switch is switched to the ON gear, the microcontroller MCU of the combination meter reads the entire kilometer mileage data in the electrically erasable programmable memory EEPROM to the random access memory inside the microcontroller MCU of the combination meter in RAM;

[0075] Step 3: Check and correct the data of each segment of the entire kilomete...

Embodiment 3

[0093] Example three: as image 3 As shown in the figure, a method for calibrating and correcting deviations with data of automobile instrument mileage includes the following steps:

[0094] Step 1: Use the mileage data segmentation method to divide the total mileage into full kilometer mileage data and non-full kilometer mileage data. The full kilometer mileage data is divided into multiple groups of data stored in the electrically erasable programmable memory EEPROM. In the address space, the cumulative sum of the data in all address spaces is the actual full kilometer mileage data;

[0095] Step 2: When the vehicle ignition switch is switched to the ON gear, the microcontroller MCU of the combination meter reads the entire kilometer mileage data in the electrically erasable programmable memory EEPROM to the random access memory inside the microcontroller MCU of the combination meter in RAM;

[0096] Step 3: Check and correct the data of each segment of the whole kilometer...

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Abstract

The invention discloses a data verification and correction method for automobile instrument mileage, which belongs to the field of automotive technology. The purpose is to solve the data damage in the data storage process caused by abnormal working conditions, while reducing the frequency of erasing and writing operations on the same storage address space, and improving The service life of the storage device includes the following steps: Step 1: Use the mileage data segmentation method to divide the total mileage into full kilometer mileage data and non-full kilometer mileage data. The whole kilometer mileage data is divided into multiple groups of data storage In different address spaces in the electrically erasable programmable memory EEPROM; by dividing the total mileage into full kilometer mileage data and non-whole kilometer mileage data, and using error correction algorithms to timely correct abnormal data, it can effectively It solves data damage caused by abnormal working conditions during data storage, while reducing the frequency of erasing and writing operations on the same storage address space and improving the service life of storage devices.

Description

Technical field [0001] The invention belongs to the field of automobile technology; specifically, it is a data verification and correction method for automobile instrument mileage. Background technique [0002] The total mileage of a car is the total mileage traveled since the day the vehicle left the factory. It is required to be recorded and displayed on the instrument for users and maintenance personnel to understand the status of the vehicle. It is a very important vehicle status parameter. The vehicle's usage environment is changeable, and the vehicle's electronic components are susceptible to unpredictable signal interference, which inevitably leads to short-term erroneous operations. When the vehicle's storage components store vehicle mileage data, it is easy to lose vehicle mileage data or vehicle mileage due to signal interference. Mileage data is stored incorrectly, and there is often a lack of strict verification methods for the accuracy of mileage data during mil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/10G06F11/14G11C16/14G06F9/22
Inventor 章赞马智慧管理松李和高罗杨杨周强强张海宁
Owner 安徽天健环保车辆部件有限公司