Presentation is loading. Please wait.

Presentation is loading. Please wait.

Team 4 Baby Peas “ Pulse Early Alarm Sensor” Chris Ramirez Benjamin Goolsby Xin Tong Yowwu Lin.

Similar presentations


Presentation on theme: "Team 4 Baby Peas “ Pulse Early Alarm Sensor” Chris Ramirez Benjamin Goolsby Xin Tong Yowwu Lin."— Presentation transcript:

1 Team 4 Baby Peas “ Pulse Early Alarm Sensor” Chris Ramirez Benjamin Goolsby Xin Tong Yowwu Lin

2 What is Baby Peas ???  Infants are weak  Traditional monitors do not tell the whole picture  Empirical data is needed  Biomarkers can give peace of mind

3 Motivation  Motivation behind Product  SIDS  Infant’s insignificant ability to maintain homeostasis  Unable to express precise problems  Motivation behind education and skill set  RF design  Software design  Medical field

4 Design Approach  SAFETY !!!!  Human Computer Interface  Usability  Functionality  Pulse  Temperature  Oxygen  Position

5 Specifications

6 Design Decisions  Low Power  Wireless  Ease of implementation  Vendor Support  Low Cost

7 Subsystems SensorsCommsPower Central Processor Mobile Application

8 Hardware Block Diagram CC2541 Microcontroller Bluetooth BLE v4.0 RF module circuit BLE V4.0 compatible display device Heart Rate / Blood Oxygenation Sensor Circuit Body Position Sensor Circuit Skin Temperature Sensor Circuit Coin Cell Battery DC-DC regulator circuit

9 Central Processor  Low Power  Small and Mobile  Interface capability with multiple sensors  Interface capability with wireless devices

10 CC2541  Bluetooth SoC solution  SensorTag and Keyfob development kits valuable for reference design  8051 MCU architecture  Five-Channel Direct Memory Access  I 2 C, SPI interfaces

11 Peripherals  Pulse Oximeter  Measures blood oxygen saturation along with heart rate  TI AFE4490  QFN package  3V-3.6V  Temperature Sensor  Measures the temperature on Skin surface  TI TMP006  Wafer Level Chip Scale  2.4V-5.5V

12 Peripheral technical specs  Body Position Sensor  Invensense MPU6000  Gyro + Accelerometer  3 axis for each  Capable of SPI and I2C interface  QFN package

13 Communications

14 Bluetooth Low Energy

15 POWER  Texas Instruments TPS62740 step down DC-DC converter  2MHz switching  Selectable output voltage range 1.8v-3.3v  Efficiency of 95%

16 Power Schematics

17 Power solution 2  Linear Tech LTC3534 Buck-Boost DC/DC Converter  2.4v-7v input range w/ 1.8-7v output  Use just 1 CR2032 battery

18 Buck-Boost Schematic

19 CC2541 Schematic

20 Sensor Schematics

21 Printed Circuit Board  Eagle Cadsoft 

22 User Interface Design  Ease of use  Navigation  Menus  Conducive to the purpose of the device  Responsive

23 Software Flow Charts

24 Software UML Chart

25 Ikea Instruction

26 Concept Design

27 Firmware Block Diagram Setup and Init Registers Setup and Init SPI/I 2 C buses Sample Data Export to Bluetooth Sensors Start

28 Build  Soldering QFN packages and crystal oscillators w/ hot air pencil under 10x microscope  Solder remaining components with solder iron.

29 Test DC-DC Regulators CC2541TMP006MPU-6000AFE4490 Mobile Application

30 Work Division GoolsbyLinRamirezTong SensorsX BluetoothX CPUX SoftwareXX Mobile AppX Board Design XX PowerXX

31 Bill of Materials Item: Price (USD): Microprocessor CC2541 Free Sample AFE4490 Free Sample MPU6000 $10.72 TMP006 Free Sample TPS72430Free Sample PCB x2 $132 Eagle Hobbyist Version $170 Sensor Tag$25 CC2541 Debugger$99 TI sponsor $-175 Miscellaneous$100 Total so far…$ Expected Total$600.00

32 Project Schedule

33 Project Progress

34 Remaining Problems  Everything  Board Layout learning curve  RF PCB Layout precision  Understanding Bluetooth Stack protocols  Firmware loading and timings  Mobile application learning curve  AFE4490 analog frontend schematic capture

35 Thanks  Dr. Chan  Cadsoft Eagle staff  Texas Instruments  Dr. Richie  Ben’s parents  Chris’ wife  Xin Tong  Yowwu Lin  Christopher Ramirez  Ben Goolsby

36 Any Questions ????


Download ppt "Team 4 Baby Peas “ Pulse Early Alarm Sensor” Chris Ramirez Benjamin Goolsby Xin Tong Yowwu Lin."

Similar presentations


Ads by Google