An Intelligent Digital Speed ​​Mileage Metering Device

A metering device, digital technology, applied to measuring devices, measuring distances, instruments, etc., can solve problems such as cost and stability, achieve high recording accuracy, avoid wear and tear, and be easy to operate

Inactive Publication Date: 2011-12-14
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While cars have speed odometers, most pedelecs, gas mopeds and rickshaws do not, mainly due to cost and stability issues

Method used

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  • An Intelligent Digital Speed ​​Mileage Metering Device
  • An Intelligent Digital Speed ​​Mileage Metering Device

Examples

Experimental program
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Embodiment Construction

[0015] Such as figure 1 As shown, 36 magnetic steels are installed on the wheel drum with the same polarity and shape, and a non-contact Hall magnetic induction sensor is installed on the frame. There is a 16-bit timer / counter inside the microcontroller. Through software settings, when a signal is sent from an external pin to the timer / counter, the timer / counter is used as a counter. When the signal comes from the inside of the microcontroller, the timer / counter is used as a timer. In this design, the timer / counter is set as counter 0 through software setting, and the pulse signal is obtained and counted through P3.4 (T0) when counter 0 is working; the timer / counter is set as timer 1, and 1 / 12 of Crystal oscillator frequency pulse signal, the designed crystal oscillator frequency is 12MHz, so the internal clock frequency obtained by timer 1 is actually 1 MHz. When the wheel rotates and each magnet passes through the Hall sensor, the Hall sensor will send out a pulse signal, a...

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PUM

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Abstract

The invention discloses an intelligent digital velocity mileage metering installation, and belongs to the field of electromechanics. The installation of the invention comprises N magnetic steels arranged on a tyre hubs, a power module, a Hall sensor, a singlechip, four digit nixie tube, switch that are arranged on a vehicle body. The singlechip is equipped with a timer, a counter, a flash memory. The N magnetic steels have a same size and a same polarity, and N equals to 36. The Hall sensor transmits an induction signal of the magnetic steels to the counter, and at the same time, the timer generates an interrupt signal to the counter. The singlechip reads a value of a start-stop counter, and then the counter is cleared. The singlechip calculates a current running speed and a travelled distance of the current ride, and transmits the data to the four digit nixie tube; meanwhile, the flash memory acquires and stores the data the singlechip output each time. If applied, the invention canavoid a problem of circuit abrasion and has a high counting preciseness and high accuracy.

Description

Technical field [0001] The invention involves a smart digital speed mileage metering device, which is used in the speed mileage meter such as most electric vehicles and fuel -help vehicles, which belongs to the field of electromechanical technology. Background technique [0002] Single -chip machine technology itself is mature. The question is how to apply it to social life.The single -chip microcomputer that integrates CPU, RAM, ROM, I / O port, and time / count on a chip is designed for industrial control. Various models and various functions are abound. Single -chip machine technology is currently mature and has been widely obtained.application.The single -chip machine technology has been applied to the design of the automotive speed and mileage table, but there is no uniform standard, and signal collection and processing are all over.Although the vehicle is installed with a speed mileage, most electric help vehicles, fuel -assisted cars and human vehicles do not install speed mil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C22/00
Inventor 万长建
Owner NANJING UNIV OF INFORMATION SCI & TECH
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