prototype which can measure blood pressure

1. ELECTRONIC PRODUCT DESIGN AND MANUFACTURE
EC9080
GROUP 2

2.  LINOJAN. S 2014/E/017
 DARSHIKKA. L 2014/E/018
 YUZISAN. S 2014/E/048
 JEYARUKSHINI. L 2014/E/050

3. 1. FINDING THE DESIRED FREQUENCY
From Data collected from the Pulse oximeter in LAB:
FFT Graph of Pulse Signal:

4. Frequency
Power(dB)

5. Frequency
Power(dB)

6.  Through the analysis of FFT graph, we found that Cutoff frequency
must be
 Nearly 2 Hz to 2.5 Hz

8. EMITTER and DETECTOR
 𝑅1 = 150 Ω
 𝑅2 = 33 𝑘Ω
R1 R2
VCC (5V)
LED Terminals LDR Terminals
GROUND

9.  FULL CODING

24. HC-05 module is an easy to use Bluetooth SPP (Serial
Port Protocol) module, designed for transparent wireless
serial connection setup.
Serial port Bluetooth module is fully qualified Bluetooth
V2.0+EDR (Enhanced Data Rate) 3Mbps Modulation with
complete 2.4GHz radio transceiver and baseband