Unlock instant, AI-driven research and patent intelligence for your innovation.

Vehicle fixed odometer speed ratio conversion method

A conversion method and mileage technology, applied in the direction of measuring devices, instruments, surveying and navigation, etc., can solve the problem of uncommon gearbox part numbers and other problems

Inactive Publication Date: 2020-07-14
DONGFENG AUTOMOBILE COMPANY
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shaft of the contact vehicle speed sensor is connected to the output passive gear of the gearbox. In order to ensure that the speed ratio of the odometer remains constant, the transmission ratio of the output worm gear of the gearbox of different models needs to be adjusted, which makes the part number of the gearbox not universal.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle fixed odometer speed ratio conversion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The odometer speed ratio of a vehicle is K 1 18000, determine the fixed odometer speed ratio K of the instrument output 2 for 6000:

[0022] When the vehicle speed is 30km / h, the sampling frequency is f i =18000×30 / 3600=150Hz;

[0023] Then the instrument should output frequency f at this time o :

[0024] f o =K 2 × f i / K 1 =6000*150 / 18000=50Hz.

[0025] That is, the odometer speed ratio K=3600×50 / 30=6000=K 2

Embodiment 2

[0027] When the vehicle speed is 90km / h, the sampling frequency is f i =18000×90 / 3600=450Hz;

[0028] f o =6000*450 / 18000=150Hz.

[0029] Odometer speed ratio K=3600×150 / 90=6000=K 2

[0030] Therefore, through the conversion method of the fixed odometer speed ratio of the present invention, no matter what the speed ratio of the odometer input to the meter is converted by the meter, the meter outputs a fixed speed ratio of the odometer to meet the requirements of the travel recorder or other components. The demand for generalization of odometer speed ratio.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a vehicle fixed odometer speed ratio conversion method. The method comprises the steps: a vehicle odometer speed ratio K1 is input, and meanwhile a fixed odometer speed ratio K2 output by an instrument is determined; the sensor collects a vehicle speed signal and records the vehicle speed as V, and after a pulse is received, the sampling frequency fi is calculated accordingto the formula fi = K1*V / 3600; if one pulse is not received, the pulse is continuously transmitted until one pulse is received, and then a sampling frequency fi is calculated; and the output frequency fo of the instrument is calculated according to the fixed odometer speed ratio K2 and the sampling frequency fi and a formula fo = K2*fi / K1. By means of the fixed odometer speed ratio conversion method, no matter how much the odometer speed ratio input into the instrument is, the instrument outputs a fixed odometer speed ratio to the outside so as to meet the requirement of a vehicle data recorder or other parts for universalization of the odometer speed ratio.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a speed ratio conversion method for a fixed odometer for a vehicle. Background technique [0002] Vehicle speed sensors are divided into contact sensors and non-contact sensors. The shaft of the contact vehicle speed sensor is connected to the output passive gear of the gearbox. In order to ensure that the speed ratio of the odometer remains constant, the transmission ratio of the output worm gear of the gearbox of different models needs to be adjusted, which makes the part number of the gearbox not universal. The non-contact sensor has no mechanical rotation connection with the gearbox. When the gearbox main shaft rotates, the gap between the sensor sensing surface and the gearbox main shaft sensing gear end face changes to form a Hall effect. For the non-contact vehicle speed sensor, due to the rolling radius of different models of tires and The speed ratio of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01C23/00
CPCG01C23/00
Inventor 董庆大张君付智俊吴明瞭郭建民王秀余海峰
Owner DONGFENG AUTOMOBILE COMPANY