This project aims to develop a prototype of an electronic meter that calculates the fare according to the distance travelled & time elapsed in the entire journey using 8085. The system is based on a simple principle of counting the rotations of the wheel/tyre using IR sensor. Whenever, the white piece of cardboard which is attached to a fixed position on the wheel passes near the IR sensor, it generates an output signal equals to 1 and counts it as one complete rotation incrementing the count of the distance and calculation of fare is done accordingly. The main building blocks of the circuit are 8085 microprocessor, Input/output interface, LCD display, IR sensor circuit, push buttons to start, end & reset the system & memory. The prototype is developed in parallel to the original taxi/autorickshaw fare meter. Conventionally used analog meters have many drawbacks like reading & interpolation errors, parallax errors, has no provision for digital readout of final value & no storage of readings for future reference. So, keeping in mind these things and the advantages of a digital fare calculation mechanism using a microprocessor provides an additional advantage of adding on a feature of time elapsed in traffic, not causing any kind of financial loss to the service provider. Moreover, the design of the digital meter makes it desirable for passengers as it is accurate, direct, and tamper proof. Apart from this, other motivating factors behind this project are learning the practical applicability of 8085 microprocessor &how to implement it in the form of an integrated project that is dependent on different functionalities that are offered by 8085.

Team Members : Anirudh Vaid and Arshiya Gahlot

Report : 23EC15_33EC15_report

Board and Schematic :

Youtube Link: