Electrical and Computer Engineering Preliminary Design Review Team 22: Driver Assist

2 Electrical and Computer Engineering Team 22 Members Sam Burke –EE Steve Cook –EE Andrew Klinkowski –EE Qingchuan Wu –EE Faculty Advisor : Professor Janaswamy

3 Electrical and Computer Engineering What is the Problem ?  Current disabled driving assistance modules require the driver to have two functional hands  There are no devices on the market that allow drivers to fully control a car safely with one hand.

4 Electrical and Computer Engineering How significant is the problem?  According to the 2010 US census approximately 20 million people between ages of 21 – 64 live with a serve disability*  The NY DMV states “An examiner determines what is required and whether restrictions must be added to your driver license. The DMV can also require you to take and pass a road test to keep the driver license” *Needed assistance of another person to perform one or more IADLs (aged 15 and older). **

5 Electrical and Computer Engineering How significant is the problem?  Currently there is no device that controls the gas, brakes, and steering wheel  No major car manufactures offer an option to control the car with one hand  On average it costs approximately $1500 to install a driving assist module on a car  This module is limited to controlling only the gas and brake pedals, and requires an additional spinner knob

6 Electrical and Computer Engineering Effect On Individual  Will give handicap drivers more functionality over the car  Will restore independence to individuals  Reduce cost compared to conventional handicap driving assist modules  Will allow more citizens the opportunity to drive

7 Electrical and Computer Engineering Primary Solution  Our solution is to create a joystick that mechanically controls the steering wheel, brakes, and throttle as well as control over the blinkers, lights, and horn.  The joystick will pivot horizontally allowing the driver to turn left and right. 0&s=4af0a21ce275fd7e9e9c78f8c92c344c

8 Electrical and Computer Engineering Primary solution  A throttle will allow the driver to control the gas  A hand break will be used to stop the car 0&s=4af0a21ce275fd7e9e9c78f8c92c344c

9 Electrical and Computer Engineering Block Diagram Control signal Joystick signal Feedback signal Power

10 Electrical and Computer Engineering Assignments Steve:  Throttle  Brakes Sam:  Steering motor  Joystick Qingchuan:  Power  PID Andrew:  Control  Joystick

11 Electrical and Computer Engineering Joystick Will Control:  Throttle  Brake  Steering Stretch Goals:  Signals  Windshield Wipers  Horn  Headlights

12 Electrical and Computer Engineering Controller  Will include an Arduino and a PID  Self calibrated  Manage power consumption Stretch Goals:  Arduino used to communicate with the CAN-BUS (Computer Area Network)  Signals sent from the Arduino will interface with the car’s computer to control basic traffic signals

13 Electrical and Computer Engineering Motor Controller  PID controller will be used for maintaining the position of the steering wheel.  Gas and braking power is proportional the position of the hand brake and gas throttle.  The position of the brake, gas, and steering wheel will be fed back to the controller to minimize disturbance.  All the motors used will be synchronous motors

14 Electrical and Computer Engineering Mechanical Steering  Create a wheel jacket that connects around the steering wheel. Wheel jacket will contain tracks Motor behind steering wheel will link to tracks  Position of the steering wheel will be sent back to the controller  A “home” position will be placed on the track to assist calibration

15 Electrical and Computer Engineering Mechanical Steering  A track will be attached to a wheel jacket, and enable the motor to “grip” the wheel more effectively  A synchronous motor will be able to control the precision of the motor during static and dynamic use

16 Electrical and Computer Engineering Mechanical Gas & Break  The gas and brakes will be controlled using a linear actuator attached to each pedal  Response of the linear actuator will be dictated by the controller

17 Electrical and Computer Engineering Power  A external battery will be used to power this device  External battery will be charged from the cigarette lighter socket; the charging current will be limited to 15 Amps.  Polyphase inverter will be used to drive the motors

18 Electrical and Computer Engineering CAN-BUS  The CAN-BUS can be used to access all the electrical functionalities on modern cars  Control for the turning signals, lights, and horn can be accessed by sending a signal to the computer  In newer cars, controls are done by wire making it possible to control the gas and brakes as well

19 Electrical and Computer Engineering Requirements Steering Wheel Motor response time <50ms 1.5 seconds per steering wheel revolution Powerful enough to rotate steering wheel while at stand still Able to hold wheel in place while off center Brake engagement time <350ms* Giving computer decision time<50ms *

20 Electrical and Computer Engineering Requirements Can not interfere with safety features (i.e. the airbag) Can not visually impair drivers ability to see road Power loss can not result in loss of control Stretch Requirements:  Functionality over some electronic components

21 Electrical and Computer Engineering Alternative Joystick This joy stick will pivot horizontally allowing the driver to turn left and right. And triggers will be located on the back to control the gas and brake

22 Electrical and Computer Engineering Alternative Steering  Control the steering wheel through magnetic coils  Control the brake through pneumatics Pneumatic piston have higher power  Control steering though the CAN-BUS for newer cars  Put a gear on the collar of the steering shaft which will be controlled by the motor

23 Electrical and Computer Engineering Proof of concept  We will implement our design on a virtual car. The xbox360 has a racing wheel car attachment which includes a steering column, brake pedal, and gas pedal.  We will attach our device on this and control the car in the video game amazon.com/images/G/01/videogames/detail- page/sc_b005o6z028-01pedal.jpg

24 Electrical and Computer Engineering Cost  1 Throttle - $20  1 Hand brake - $10  2 Linear Actuator - $300  1 Wheel Motor - $100  1 Wheel Jacket and Track - $20  1 Printed Circuit Board $50  1 Joystick – $50  1 Arduino - $25  Electronic components $50   Estimated Total Cost $625

25 Electrical and Computer Engineering MDR Deliverables Moveable components  Motors  Actuator  Move motors discretely from input

26 Electrical and Computer Engineering Questions Questions?