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Mileage Acquisition Method and Device Based on Vehicle Diagnosis System

A vehicle diagnostic system, vehicle technology, applied in the direction of measuring devices, measuring distances, instruments, etc., to achieve the effects of improving accuracy, eliminating system errors, and improving reliability

Active Publication Date: 2019-04-05
BEIJING GENERAL MUNICIPAL ENG DESIGN & RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for obtaining mileage based on a vehicle diagnostic system and incorporating a data compensation algorithm, so as to solve the instantaneous speed data of the vehicle output by the OBD system, integrate the data compensation algorithm, and improve the accuracy of calculating the displacement value. Technical issues such as the reliability of the above systems

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  • Mileage Acquisition Method and Device Based on Vehicle Diagnosis System
  • Mileage Acquisition Method and Device Based on Vehicle Diagnosis System

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Embodiment Construction

[0019] Circuit structure and working principle of the present invention refer to figure 1 The implementation shown:

[0020] 1. Acquisition module

[0021] (1) OBD data acquisition sub-module: The OBD data acquisition device adopts the OBD-II URAT adapter that supports Arduino, the motherboard that controls the data acquisition of the OBD-II URAT adapter adopts the Arduino motherboard, and the data collected by the OBD-II URAT adapter passes through the Arduino motherboard The serial port is input into the Arduino.

[0022] (2) Time series sub-module: This sub-module uses the clock frequency of the Arduino main board. The serial port of the Arduino main board reads in the data collected by the OBD-II URAT adapter each time and gives the reading time, which is mixed with the instantaneous speed to form a series.

[0023] 2. Data processing module

[0024] (1) Original displacement value calculation sub-module: This module uses the time series and velocity series obtained by ...

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Abstract

The invention discloses a method and device for obtaining travel mileages based on a vehicle diagnosis system and an integrated data compensation algorithm. Unit conversion is conducted on data by acquiring vehicle's instantaneous speed of an OBD system, the data compensation algorithm is added, then interval time and a vehicle displacement value are calculated according to a time sequence produced by output speed, and accordingly more accurate road travel mileage measurement value is obtained. Testing proves that the path lengths, respectively obtained at the continuous recording positions of a GPS device, of travel mileages obtained by a measurement device which does not adopt the data compensation algorithm and a measurement device adopting the data compensation algorithm, are compared, the data accuracy is improved by 10 times, and the requirements of general engineering measurement and traffic research can be met.

Description

technical field [0001] The invention belongs to the technical fields of vehicle system, road measurement, traffic research, road design and the like. Specifically, it relates to a method for obtaining mileage based on a vehicle diagnosis system integrated into a data compensation algorithm. Background technique [0002] The vehicle diagnostic system (OBD) was originally used in vehicle maintenance and other fields. In recent years, with the development of electronic technology, the collection of OBD data has begun to be used in the interdisciplinary subjects of automobiles and other related industries. The speed data in OBD data is simply Estimate the key parameters of the vehicle's driving attitude. The inventor also used OBD speed data to obtain road alignment, but because the OBD data specification was formulated for vehicle diagnosis, the output of the speed value was set as a mixed data consisting of 1-digit letters and 4-digit numbers, 4 The number of digits is the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C22/00
CPCG01C22/00
Inventor 吴楠
Owner BEIJING GENERAL MUNICIPAL ENG DESIGN & RES INST