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Automatic Toll Booth. By: Nick, Brandon, Grayson, &Thomas. Problem: Design Brief:. In an effort to reduce the cost of operating tool booths, the Department of Transportation (DOT) is planning to install automated tool booths.
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Automatic Toll Booth By: Nick, Brandon, Grayson, &Thomas
Problem: Design Brief: In an effort to reduce the cost of operating tool booths, the Department of Transportation (DOT) is planning to install automated tool booths. As a part of the development team, your job is to design, build, and program a fully automated Tool Booth Control System (TBCS). The TBCS is required to distinguish between automobiles, trucks, and tractor-trailers and keep the gate open longer for vehicles of different lengths. The toll for each vehicle is based on size and the TBCS will accept different tokens. The Problem
Problem Continued The controlled device must: • Use a gate to stop traffic until each tool is paid. • Be powered electronically (or motor actuated pneumatics). • Distinguish between automobiles, trucks, and tractor-trailers. • Accept different value tokens. • Have a visual indicator to determine if the tool is paid. • If the toll is not paid and the vehicle drives off, the system will take a picture of the fleeing vehicle.
Vehicle Toll ($) Gate Open Automobile, SUV, Pickups .50 5 sec. Auto w/Trailer 1.50 9 sec. Delivery Trucks 2.00 7 sec. Tractor Trailer 3.00 12 sec. Chart Toll and time requirements:
The Vehicles Each vehicle had to be a certain size to cover up certain light sensors to activate the arm.
The Basket When a coin is dropped in this basket, a light sensor recognizes the color of the coins. When the appropriate value is reached, the gate opens for the prescribed time.
The Sensors These light sensors determine the size of each vehicle by reflecting off the body.
Motor-Controlled Valve Motor turns a cam which changes the position of the valve lever. This determines air flow in and out of the piston which raises and lowers the gate.
The Compressor The compressor pumps the air into the blue tank. Energy is stored in the form of air pressure which makes the parts function.
The Gate After the light sensors have recognized the size of the vehicle and the appropriate toll has been paid, the piston lifts the gate.