Automatic Toll Booth

1
Automatic Toll Booth

• By Nick, Brandon, Grayson, Thomas

2
The Problem

• 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.

3
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.

4
Chart
Toll and time requirements
5
The Program Part 1
6
The Program Part 2
7
The Vehicles
Each vehicle had to be a certain size to cover up
certain light sensors to activate the arm.
8
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.
9
The Sensors
These light sensors determine the size of each
vehicle by reflecting off the body.
10
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.
11
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.
12
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.