Group 9 Jake Hochstadt EE Matt Simons EE Jerome Yearwood EE Ryan Moreland CpE

Goals Emergency Vehicle Alerts via an already existing system Safety in School Zones and Construction Zones Navigation Directions Driver and Pedestrian safety

MirrorMate in a Nutshell

Display and Microcontroller Jerome Yearwood

LCD Display ez-LCD ” TFT LCD color display 400x240 resolution 4Mbytes flash memory 3.3V operating voltage Programs in ASCII Serial TTL interface

MirrorMate Display Color Description RED Emergency Vehicle is approaching YELLOW The vehicle is approaching a school zone that has an altered speed limit. ORANGE The vehicle is approaching a construction zone that has an altered speed limit. BLUE The vehicle is approaching a special event zone that has an altered speed limit. PURPLE The vehicle is approaching an accident scene that has an altered speed limit.

LCD TTL Serial Interface

Widgets BUTTON {id} {X} {Y} {Width} {Height} {Options} {Align} {Radius} {Theme} {StringID} STRING 0 ON BUTTON

Microcontroller (PIC18F26K22) Operating voltage V DD =1.8 to 5.5V Operating at 3.3V Program memory flash 64KB 16 MHz precision internal oscillator Operating at 64mHz using PLL 2 EUSART ports Utilizing TTL RS232 GPIO (I 2 C interfacing) Analog to digital converters 16 bit timer0

Infrared Systems Matt Simons

What is Opticom? Opticom is a traffic light preemption system currently used by emergency vehicles to quickly maneuver intersections Utilizes a powerful IR beacon mounted on the emergency vehicle 2 ft. IR sensors are mounted on the traffic lights 14Hz frequency, newer systems feature authentication 4 in.

Reduced speed zone beacon Placed in construction zones, school zones, accident scenes or anywhere a driving hazard exists User configurable via buttons and seven segment displays Features alerts for school zones, construction zones, accident scenes, and special events.

Beacon details Utilizes peak wavelength of 950nm at 38kHz, High power emitters Encodes information into RC-5 similar protocol 50 high power emitters 6VDC power

MirrorMate IR receiver Two different frequency receivers to accommodate the Opticom system (14Hz) and the reduced speed zone beacon (38kHz) The 14Hz signal will be detected via phototransistors, schmitt triggers, and firmware The 38kHz carrier wave is removed from the IR signal via integrated IR receivers. The data is interpreted by the MCU Four directional receivers located in the bottom of the mirror determine direction

MirrorMate Subsystems Jake Hochstadt

Bluetooth Hardware Current Requirements: 8mA – 40mA Voltage Requirements: V Operates at 3.3V Benefits Inexpensive Serial Interface Ease of use HC-05 Bluetooth Serial Module

Compass Magnetometer Breakout Board Triple Axis Voltage Requirements: 1.95V to 3.6V Operates at 3.3V I2C interface MAG mm

Temperature sensor MCP9701 Voltage Requirements: 3.1V to 5.5V Operating at 3.3V Current Requirements: 6uA Temperature Range -40°C to +125°C Analog Interface Ease of Use

Sensor Transfer Function

Android Development Phones Motorola Photon 4g Android (2.3) Bluetooth: v2.1 Screen Size: 4.3 inches Motorola Defy Android (2.2) Bluetooth: v2.1 Screen Size: 3.7 inches

Android Application Ryan Moreland

Android Development Application written in Java for Android version (Gingerbread) Forward compatible with all newer Android versions Android holds approximately 75% of the U.S. market share

Android Development Written utilizing the Google Distance Matrix API Google Maps JavaScript API Google Maps Android API Android Bluetooth API

Power MirrorMate will operate on any standard 12V automotive charging system with provided adapter. MirrorMate requires 3.3V for all components. This voltage will be created by a simple power supply consisting of a commercially available voltage regulator. (LM1085) Construction zone beacon requires 5V, it will use multiple LM1084 regulators to power the microcontroller and the large current requirements of the emitters. Ensures constant voltage for emitters

Budget and Financing $ spent on the MirrorMate system Assistance from family members Funded purchase of LCD ($177.00) $ funded by group members

Budget ItemDescriptionPrice Mirror Hardware Assembly Hardware and materials used only in mirror assembly $ Beacon Hardware Assembly Hardware and materials used only in beacon assembly $ Electrical ComponentsComponents used throughout the project and for testing $ PCB’sCost of MirrorMate and Beacon PCB$ Misc.Misc. costs (RMA shipping, unused parts) $27.64 Android OS DeviceMotorola Photon 4G, Motorola DefyFREE TOTAL:$686.46

Testing 2 different types of LEDs were tested to determine optimal beam width to maximize the area of effect of the signal 2 TSOP types were compared to determine which would produce a better signal especially in a IR-noisy environment Maximum range for the beacon signal to be detected by the mirror in optimal conditions was 950 feet. Compass headings were verified as correct every 10 degrees

Challenges and Lessons Learned LCD is difficult to see in daylight IR range is limited in intense daylight Power supplies need improvement

Questions