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Knight’s Wireless Baby Monitor

Knight’s Wireless Baby Monitor. Keeping our babies safe!. Group Information Team 5. Objectives. Build a reliable baby monitor for infants under one year old to monitor the infant and keep it out of hazardous positions known to be associated with SUID and SIDS.

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Knight’s Wireless Baby Monitor

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  1. Knight’s Wireless Baby Monitor • Keeping our babies safe!

  2. Group InformationTeam 5

  3. Objectives • Build a reliable baby monitor for infants under one year old to monitor the infant and keep it out of hazardous positions known to be associated with SUID and SIDS. • Monitor motion, body heat of the infant with the temperature and sound of the environment. • Alert the caretaker and parents of life threatening events. • Enable the parents to monitor the babies environment via their smart phones. • Ability to add remote sensors in the future to monitor the heart rate and babies temperature.

  4. System Specifications

  5. Overall System

  6. Motion sensor

  7. Induction distance 24 hours Size Buzzer • Move too often • Don’t move sensor motion sensor • cell phone

  8. HC-SR501Infrared PIR Motion Sensor Detector Module Infrared sensor Control circuit board 24mm 32mm

  9. Potentiometer Input Ground Output • Adjust distance • Clockwise = increase 7m • Anticlockwise= decrease 0m • Adjust delay time • Clockwise=longer delay • Anticlockwise=shorter delay Output voltage: to enter the sensor output range is high, people leave the sensor range of the automatic delay off high, output low

  10. Basic features Induction blocking time(default setting:2.5s) After output, we can set the blocking time, and the motion sensor will stop working in the blocking time two trigger mode: A: can not repeat the trigger B: repeatable trigger: If some move object move in the sensing range, The motion sensor will work after the delay time.

  11. Connect to the board Microcontroller Microcontroller

  12. Camera

  13. Camera Definition No flashing Small 24 hours

  14. JPEG Camera Module 8mm 32mm 25mm

  15. PL2303HX Chipset Based USB 11mm 15cm 50mm

  16. Connect Together

  17. Software • ISPY • Add the Camera to the ispy • To virtually video source • Assigned an IP address

  18. Third party soft ware IP Cam Viewer Good Compatibility Stability Free IP Webcam IP CAM Controller Reecam IP Camera

  19. Microphone

  20. Candidate Microphone Devices for Breathing

  21. MICROPHONE:AOM-4544P-2-R Microphone – This will be put near the bottom of the monitoring unit in order to record the sound of the baby’s breathing. Since the microphone will also detect ambient noise, a band pass filter will be used to correct for this. Specifications: The AOMP4544 has a high SNR and flat, wideband frequency response, resulting in natural sound with high intelligibility • Directivity: Omnidirectional • Frequency Response Min: 20Hz • Supply Voltage Max: 1.5V • Sensitivity (dB): -44dB • Drain Current Max: 500µA • Output Impedance: 2.2kohm

  22. Microphone Schematic: AOM 45444P-2 Rand and TI 0801 Amplifier

  23. Temperature sensor

  24. Temperature Sensors:

  25. Why MLX90614DAA ? • Power saving mode • Customizable PWM output for continuous reading • Medical accuracy of 0.1°C in a limited temperature range • SMBus compatible digital interface for fast temperature readings and building sensor networks • High accuracy of 0.5°C over wide temperature range (0..+50 C for both Ta and To) • Infrared thermometer for non contact temperature measurements. • 17-bit ADC and powerful DSP • Resolution of 0.02°C

  26. Wiring the Temp Sensor(I2C

  27. TESTING TEMP SENSOR • MELIXIS 90614

  28. IR sensor field of view

  29. Monitoring unit

  30. Microprocessor

  31. MSP430FG4618 Micro Controller • The MSP430 has a built in clock. • Familiarity with the MSP 430 through embedded systems courses • The MSP has an A/D converter , amplifier switch and Trigger switch built in it. • FREE from TI and the support system

  32. Microprocessor Programming

  33. Software Requirements • Use the waterfall development process. • Use C languages for the microcontroller programming. • Compare sensor outputs to previous output to identify changes. • Compare sensor outputs to the appropriate sensor parameters and identify signals outside the parameters. • Send sensor outputs to the smart phones when requested. • Send alerts to the alarm unit(s) and smart phone(s).

  34. Software Specifications

  35. Communications

  36. Communication Technology

  37. Wi-Fi • Communicate, and streaming video to the Android App • Readily available in most locations • Greater Range Than Bluetooth

  38. Wi-Fi Modules

  39. Wi-Fi Module: XbeeRN-XV • Transmission Range: 400 ft • Transmit Power: 1.25 to 2 mW • Voltage: 2.1 - 3.6 VDC • Greater Data Rate than Bluetooth @11/54Mbps 802.11 b/g Protocol

  40. Communication Radio Frequency

  41. Transmitter/Receiver • Transmitter- receives audio/video signal and converts it to modulated radio frequency signal and transmits to receiver over a variety of distances. • Receiver-picks up modulated radio frequency, converts it to original audio/video signal

  42. Module (XBEE PRO) • Specifications: • Universal Asynchronous Receiver Transmitter (UART) • 2.4 GHz ISM Band • 250 kbps Max Data Rate • Secure Data Communication between devices • 6o mW output Power • Weight: 39g

  43. Alarm unit

  44. Xbee #2 • Located up to 40 m from Xbee #1 • Communicates with Xbee #1 and MSP430FG4618

  45. Alarm Unit

  46. Alarm Unit LED • Visual Alarm The vibrator motor is perfect for non- audible indicators Audible Alarm Vibration Motor

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