Open Sesame. Grant Apodaca Jeffrey Bolin Eric Taba Richie Agpaoa Evin Sellin

Transcription

1 Open Sesame Grant Apdaca Jeffrey Blin Eric Taba Richie Agpaa Evin Sellin

2 Descriptin Open Sesame is a prtable, affrdable, cmpact and easyt-use dr security accessry, that can unlck yur dr remtely with Wi-Fi thrugh an andrid r ios app, r can unlck yur dr thrugh a Bluetth prximity detectr, discriminating between nly authrized users. It requires nly a very simple, nn-invasive installatin, and runs ff f a prtable slar-rechargeable battery pack.

3 Team Sesame Grant Apdaca - team leader, bluetth, and security Jeff Blin - wifi, netwrking, and server Eric Taba - mtrs, mtr cntrllers, and mbile applicatin Richie Agpaa - pwer management and camera interface Evin Sellin - camera interface and web develpment

4 Applicatin Open Sesame is designed be a multi-use lcking accessry which simplifies the way peple lck and unlck their drs After a simple, nn- invasive installatin, the user can unlck their dr in 1 f 3 ways: Autmatically by appraching the dr Manually by use f the included app Manually by use f the web interface

5 Applicatin II The user can then lck their dr in the same 3 ways Autmatically by walking away frm the dr Manually by use f the included app Manually by use f the web interface

6 Applicatin III The App allws fr user cntrl f the lck, and settings adjustment, as well as permissin cntrl, t allw ther users access t unlck the lck This can be dne thrugh the web interface t Permissin cntrl dne by sharing encrypted keys securely, r by blcking user ID s

7 Applicatin IV The App and web interface als ffers device health data Dr status (lck/ unlck/ ajar) Battery health Camera access

8 Parts list Cmpne nt Part number Ntes Primary features Interface Prcessr LPC UART, 1 USB, 120 MHz 5 UART, 1 USB Wifi mdule RTX4100 lw energy, wifi b/g/n, built in cntrller fr ascii interfacing Bluetth Mdule BLE113-A-M256K lw pwer and desired 30 ft range class 2, BLE, versin 4.0, lw pwer sleep mde UART UART Camera Simple t use library fr universal camera cntrl small reslutin fr fast respnse USB Battery standard AA rechargeable Will be cmpatible with slar charger, as well as easy t use fr cnsumer Easy t use standard Mtr QSH4218 Stepper with ptical encder fr better cntrl fr lcking mechanism Biplar, Hybrid, 50 z*in trque, 4.5 V, 1 A UART Quadrature RencR35i 5V, custmizable, 500 khz USed t calibrate and securely lck dr UART

9 Tp Level Blck Diagram

10 Critical Elements Bluetth -Used t detect prximity and valid user t pen r clse lck -Establishes Wifi cnnectin Mtr -Used t turn the lck t the pen r clsed psitin Server -Hsts specific user lgins and accunts Wifi -Acts as server prviding device statistics t the internet

11 Prcessr LPC4088 Memry: 512KB Flash, 96KB RAM, 4KB EEPROM Timers: 9 Standard Timers, 18 PWM Channels Serial Interfaces: 5 UART, 3 I2C, 3SPI/SSP, 1I2S, 1 USB, 2 CAN, 1 Ethernet Analg Interfaces: 8-ch/12 b ADC channels, 10b DAC channel, 2 cmparatrs 8/16/32 External Bus Interface 109/165 GPIO pins Max CPU Frequency: 120 MHz Supply Vltage: V Temperature Range: -40 t 85 C

12 Mtr DigiKey QSH Operates blt, lcking and unlcking dr Biplar Hybrid Stepper Mtr Step Reslutin: steps Full-Step Mtin: lwer pwer cnsumptin Trque: 50 z*in A

13 Quadrature Encder R35i Mdular Encder frm Renc Attaches t mtr shaft Rtary encders prvide feedback t the micrprcessr via GPIO. Frequency f utput signal prvides speed f the mtr and distance traveled. Allws fr precise mnitring f blt psitin due t pwered mtin r manual rtatin (ccurs during device cnfiguratin) 5 V

14 Mtr Driver Slarbtics L298 Cmpact Dual Mtr Driver Kit Prvides interface between micrcntrller and mtr Has dides and cmpnents t prtect the micrcntrller frm back EMF and vltage spikes Has transistrs fr directin switching (H-Bridge) 6-50V Output Well dcumented Previusly used in Capstne prjects

15 Wifi RTX4100 Cnnectivity: Wi-Fi, b/g/n 2.4GHz Dimensins: 30mm x 18mm x 2.4mm Data Rate: 2.1Mbps (UDP) Applicatin Memry Space: 36kB Flash, 4kB RAM Interface: Integrated Antenna, Caxial cnnectr t Antenna, SPI, UART, I2C, GPIOs, JTAG, Flash Prgram Interface Pwer Cnsumptin: Peak=230mA, Average=0,5mA, Standby=1.4uA Operating Supply: Min 2.2V, Max 5.25V Security: WPS, WPA2

16 Bluetth BLE113-A-M256K Bluetth v4.0 BLE Class 2 t limit pwer usage and range max 4dBm UART with data cmmunicatin capability 16 Mb internal flash 12.4 x12.4 x1.8mm Lw pwer sleep mde

17 Technlgy Reuse Wifi mdules and bluetth mdules were researched t be reused, but in the end, the newer technlgies seemed t suite ur pwer and cmpatibility needs better. The mtr cntrller will be reused thugh, because f its reliability, and lw cst.

18 Technlgies t Cnsider We are als cnsidering the use f GPS technlgies t better imprve prximity accuracy, and the use f Magnetmeters t mre cmpactly detect dr penings. Snar, and Infrared are als being explred t aid the GPS with prximity ranging t prevent errneus dr unlckings.

19 Thank Yu! Questins? Cmments? Cncerns?