LAR POWERED BIKE RACK SYSTEM. Daniel Adarme (E.E) The Pham (E.E) Christine Erwin (E.E) Nha Nguyen (E.E)

Transcription

1 S LAR POWERED BIKE RACK SYSTEM v v v v Daniel Adarme (E.E) The Pham (E.E) Christine Erwin (E.E) Nha Ngyen (E.E)

2 Table of Content Motivation Goal and objective Specification Strctral Design Hardware Design : Power System, DC-AC, locking system, applications Software Design: Embedded System Project Bdget and Finance Qestion

3 MOTIVATION Typical bike rack does not flly protect the bike from bad weather Not safe to walk to the bike rack at NIGHT TIME on camps BIKE LOCK KEY can be STOLEN or LOST BIKE can still be STOLEN even if it is locked to the rack Camps is large and time gap between classes is short There is a hge demand for charging station for Electric Bikes

4 Goals and Objectives Bikes can be flly protected from bad weather by bilt-in roof Embedded locking system is added to the rack for easy access Magnetic Card Reader device is added to locking system to improve secrity/identification prpose Only stdent with valid ID has the access to the bike station (preventing otside thefts) LED lights and Secrity camera being added the system provide more safety at night time Motion Detection Sensor is added to the system for energy efficient prpose Bike Sharing System is designed to help stdents with easy commting between place to place The 110V AC otlet is provided to charge electric bikes Power will be provided 100% by the OFF-GRID Solar Power System

5 Specifications Component Parameter Design Specification Power Storage System (Deep Cycle Battery) Discharging Dration withot power provided by solar panel STILL MAINTAIN ABOVE 50% CAPACITY 12 HOURS Solar Charge Controller VOLTAGE RATING and CURRENT RATING ~12V DC and 5A DC Solar Charge Controller Power Efficiency greater than 75% Power Distribtion System (DC-DC converter) Power Consmption Less than 5W Power Distribtion System (DC-DC converter) Total System Efficiency Above 95% DC-AC inverter Stable AC Power Spply 110V 60Hz Microcontroller Low power, wireless comm. capable 3.3V max, WiFi Motion Detection Sensor Viewing distance/range 270 degree, 2 meters

6 Over All Strctral Design Component Parameter Desired Vale Over All Strctral Strctre Strctre Height Spport Force Capability Estimated Cost 6.0 Feet ~ 7.0 Feet 60 lbs $50~$100

7 SYSTEM OVERALL BLOCK DIAGRAM

8 Changing Decision on POWER SYSTEM Time and financial constraints affected on initial system design decision NAME INITIAL DESIGN NEW DESIGN Reason to Change ADVANTAGE/ DISADVANTAGE SOLAR PANELS 200W Polycrystalline 18V rating voltage 10A rating crrent 100W Monocrystalline 18V rating voltage 6A rating crrent Financial Constraint Less weight Smaller Dimension Cost Redced by $80 Taking longer to charge BATTERIES Golf Cart Batteries Deep Cycle 430 Ah 12V 5.16 kwh AGM Deep Cycle 105 Ah 12V 1.26 kw Financial Constraint Lack of information Cost redced by $200 Smaller Size Less power capability SOLAR CHARGE CONTROLLER MPPT PMP765 TI CHARGE CONTROLLER REFERENCE DESIGN SOLID STATE SWITCH CHARGE CONTROLLER Time Constraint Bdget Constraint Reqired knowledge in coding No Codes Reqired Cost redced by $50 Less Efficiency

9 Solar Photovoltaic Devices for the System Photovoltaic Device Materials Choice: Monocrystalline Technologies HIGHER POWER EFFICIENCY and SMALLER IN SIZE Specifications Qantity Optimm Operating Voltage (V mp ) Optimm Operating Crrent (I mp ) 2 Panels connects in Parallel 18.5V 5.40 A

10 Power Storage System AGM (Absorbent Glass Mat) Deep Cycle Battery Most Safety and Least Maintenance reqired compared to other types Specifications Qantity 3X Battery Cycle Use Voltage 14.5V~14.9V Total Capacity Charging Time reqired to reach fll stage from 50% capacity 105 Ah Or 1.43 kwh 10 Hors

11 POWER SYSTEM BLOCK DIAGRAM 12V 35A Deep Cycle AGM Battery CONNECT IN SERIES SOLAR SSS CHARGE CONTROLLER POWER STORAGE SYSTEM (DEEP CYCLE BATTERY) POWER DISTRIBUTION SYSTEM Protection Fse SYSTEM LOADS

12 SOLID STATE SWITCH SOLAR CHARGE CONTROLLER Low cost constrction Easy to trobleshoot Reqires less power consmption Reqires less maintenance Light weight and small dimension No programming code reqired Comparison Chart Between different types of Charge Controller Cost Efficiency Maintenance Complication Rating Scale 5: Desirable 2-4: Average 1: Not Desirable ON/OFF PWM MPPT

13 Solid State Switch Charge Controller Block Diagram Solar Panel Terminal 18V ~ 20V P Channel MOSFET Voltage Bck Reglator to provide QUAD-Comparator reference voltage vale and power clock generator TI-LM317LZ For comparator circits connected as S-R FLIP-FLOP with wire OR otpt to taking in inpts and driving the MOSFET TI-LM339N 50K TrimPot Battery Fll Charge Voltage is at 14.5V Lock Oscillator period generate 30mS Plse every 15s. Its fnction to set the flip flop so that charging may commence Adjstable pot feeding desired ct-off voltage to comparator circit to drive the MOSFET Switch

14 Solar Charge Controller Schematic Design

15 EagleCAD Solar Charge Controller Schematic Design

16 PCB Board Design

17 Power Distribtion System COMPARISON CHART EFFICIENCY OPTIMIZATION COST

18 DC-to-AC Power Converter Inpt 12VDC / Otpt 120VAC 60Hz N-channel MOSFET H-bridge Configration MOSFET Driver Plse Width Modlation (Sine wave Reference Signal, Trianglar Carrier Signal, and Comparators) Low Pass Filter Srge Protection

19 DC-to-AC Power Converter Block Diagram

20 DC-to-AC Power Converter Schematic Design

21 DC-to-AC Power Converter Srge Protection Crrent from Indctors flow back to off MOSFETs Snbber Circit with Zener Diode is sed to damped the srge crrent R sn, C sn, and Zener Diode are connected parallel to MOSFETs

22 DC-to-AC Power Converter PCB Design Dimension : 159 mm x 213 mm (W x L) 2 Layers Designed by Software CS EAGLE ver 7.5.0

23 DC-to-AC Power Converter PCB Design Top View Bottom View

24 DC-to-AC Power Converter Design Implementation on Breadboard

25 Locking Mechanism Pll-type Solenoid Part A# manfactred by Gardian Electric is sed for low power consmption and high achievable pll force

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27 Locking Mechanism ENCLOSED BOX CONTAINTED SUB MCU CONTROLING SOLENOID Front Tire inserted and properly place in the center FRONT TIRE IS SECURELY LOCKED BY THE STEEL BAR SOLENOID EXTENDED STEELBAR FRONT VIEW FRONT VIEW FRONT VIEW INITIAL STAGE At this stage, system verifies ser s valid ID SIGNAL IS SENT TO SUB MCU STEEL BAR PULLED BACK BY SOLENOID WHILE WAITING FOR PROPER PLACEMENT SIGNAL OFF, BACK TO INITIAL STAGE

28 TOP VIEW OF LOCKING SYSTEM RELAY RELAY RELAY

29 Lighting System Featres Only on between the hors of 6:00 PM and 6:00 AM and off otherwise sing RTC Activated via motion sensor Controlled sing TI CC3200 Designed for the safety of the ser Circit switched sing 5V relay Flyback diode sed to protect against relay spikes

30 Camera System Featres Sends video footage to a server Footage is intended to be sed to retrieve information on stolen bicycles Srveillance deters theft Cameras are activated when someone is nearby via the PIR motion sensor Controlled sing CC3200

31 Lighting/Camera System Hardware General Diagram

32 Lighting System Code Block Diagram

33 Camera System Code Block Diagram

34 Embedded System Tiva C Series SimpleLink CC3200 Code Composer Stdio RFID Reader

35 User Interface Kentec LCD Toch Display Tiva C Series Magnetic Card Reader

36 Software Block Diagrams

37 Software Block Diagrams

38 Software Block Diagrams

39 Software Diagram

40 Graphical User Interface

41 Graphical User Interface

42 Graphical User Interface

43 Graphical User Interface

44 WORK DISTRIBUTION Name Major Area of interest Project design The Pham Electrical Engineering Electric Power System and Electronic Device Solar Power System Strctral Design DC-DC Converter Nha Ngyen Electrical Engineering Electronic Device and Integrated Circit Design DC-AC Inverter Locking Mechanism Embedded System Christine Erwin Electrical Engineering Electric Power System and Application Daniel Adarme Electrical Engineering Embedded system and commnication system SecrityCamera Motion Detection Light Sensor Main Embedded system ElectricLock system Strctral Design

45 Financing and Fndraising The project was not fnded by any company Late in March, fndraising for the project was created on gofndme.com site Goal for Fndraising was set at $1000 and dration of 2 WEEKS Reslt: LESS THAN 2 WEEKS, the goal $1000 was reached by the helps from family and friends

46 Proposed Bdget Table Name Qantity/Types Price/nit Stats Solar Panel 2x(50 watts offgrid solar panel) $200 confirmed Charge Controller Charge Controller (Inclded PCB) $35 research Battery 2x(215 Ah 6V Golf Cart Battery) $200 research DC-DC inverters 5 Circits $70 research DC-AC inverters 1 $30 research TI CC3200 SimpleLink 1; sample from TI $0 donated TI CC3200 Lanchpad 1 $0 donated Magnetic card reader 1/prime eligible $17.78 prchased RFID reader 1/prime eligible $12.80 prchased TI Stellaris Lanchpad 1 $13.38 In Transit TI Stellaris LCD Modle 1 $35 In Transit FTDI Board (2) USB 2 I2C $9.95 In Transit Phototransistor 1 $5 research camera 1 $25 research Microcontroller for the camera 1 $40 research LED strip 1 $15 research External hard drive 1 $65 research Motion Sensor 1 $12 research Bike Rack Strctre Others shipping cost, material cost $200 research Total $985~$1000

47 Process Chart Title Power System and Strctral Design Application System DC-AC and Locking Mechanism Embedded System Implementation Design and Prototyping Research

48 Qestion