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Embedded Stroke Evaluation System

Embedded Stroke Evaluation System. Amanda Sweeney, 4ECE Supervisor: Martin Glavin. Presentation Overview. Project Description Progress to Date Work Remaining. Project Description.

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Embedded Stroke Evaluation System

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  1. Embedded Stroke Evaluation System Amanda Sweeney, 4ECE Supervisor: Martin Glavin

  2. Presentation Overview • Project Description • Progress to Date • Work Remaining

  3. Project Description • This project involves the development of an embedded system that will allow an occupational therapist to objectively and accurately measure the severity of stroke suffered by patients in their care • The system will measure and record pressure, force, position and speed of the wrist action, to allow the therapist to assess the severity of the stroke

  4. Progress to Date • Strip Board - Design & Build • Voltage Regulator Circuit - Design & Build • Connecting LCD to MPU - IDE cables • Programming the LCD - To display text

  5. Printed Circuit Board • Strip Board Components • 3 FSR’s • 3 83 0hm Resistors • 9V Battery • The sensors operate as a component of a voltage divider circuit • The outputs from the circuit are transmitted to an ADUC831 circuit board

  6. Voltage Regulator Circuit • A voltage regulator is an electrical regulator designed to automatically maintain a constant voltage level. 1. Input : Unregulated Voltage 2. Ground 3. Output: Regulated voltage

  7. Connecting LCD to MPU • IDE cables to connect the pins on the LCD to the MPU made up according to pin assignment in T6963C datasheet

  8. Programming the LCD … • After power on it is necessary to drive RST low for a minimum of 2 microseconds to ensure proper reset of the T6963C. • Initialize LCD • The controller must then be initialized with a series of commands to set up the various modes and options available to the user.

  9. … Programming the LCD • Status Check • Before every data read, data write or command write the status of the LCD must be checked to ensure that it is ready to communicate with the MPU. • This means simultaneously checking the status of STA0 and STA1 i.e. D0 and D1 respectively, both of these must be “1” to enable command execution capability and data read/write capability.

  10. … Programming the LCD … Data Transmission

  11. … Programming the LCD 30h, 32h, 25h, 33h, 33h, 35h, 32h, 25h, 1Ah

  12. Work Remaining … • ADC • Serial Communication • Integrate Keypad and Buzzer • Position & Speed of Wrist Action • GUI

  13. Questions ???

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