FALL DETECTION USING SMS ALERT. AIM To find effective & timely fall of elderly and paralyzed...
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Transcript of FALL DETECTION USING SMS ALERT. AIM To find effective & timely fall of elderly and paralyzed...
![Page 1: FALL DETECTION USING SMS ALERT. AIM To find effective & timely fall of elderly and paralyzed patients using our fall detection method which is a combination.](https://reader036.fdocuments.us/reader036/viewer/2022062407/56649db25503460f94aa1dc1/html5/thumbnails/1.jpg)
FALL DETECTION USING SMS ALERT
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AIM To find effective & timely fall of elderly and paralyzed
patients using our fall detection method which is a combination of mobile phone & pattern recognition algorithm.
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PHYSIOLOGICAL BACKGROUND
• What is Fall? to drop or come down freely
under the influence of gravity to drop oneself to a lower or less
erect position
• Types of serious physiological injury - bleeding fracture centre nervous system damages
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• Fall detection methods – Video based
Acoustic based
Wearable sensor based
• Wearable sensor based
system –Micro sensors embedded into clothes
Monitor the human activities in real
time
Use of cell phone and intelligent
processing of pattern recognition
algorithms
SMS alert is sent to local General
Physician & close relative of the patient.
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SENSOR (Accelerometer)
SIGNAL CONDITIONING
A – D CONVERTER
MICRO - CONTROLLER
GPRS SIMSMS To
Relative/ Doctor
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COMPONENTS
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SENSOR - Accelerometer ADXL 335
i. Front View ii. Back View
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• ADXL 335 - small
thin
low power
complete 3 axis accelerometer
signal conditioned voltage outputs.
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Features Specifications
3-axis sensing
Small, low-profile package
4 mm × 4 mm × 1.45 mm
Low power - 350 μA
Single-supply operation –
1.8 V to 3.6 V
10,000 g shock survival
Excellent temperature
stability
# of Axes: 3
Range: +/- 3g
Sensitivity: 300 mV/g
Output Type: Analog
Typical Bandwidth (kHz):
1.6kHz
Noise Density (µg/rtHz): 300
Supply Current : 350µA
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SIM 300 GPRS Modem
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Features of SIM 300 GPRS Modem
SIM Card Slot
Input Supply
Filter Capacitor
Power On LED
Network LED
On Board
Mike
RJ 45 Connector
On Board
Buzzer
SMA Female
Connector
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Antenna
• SMA male connector and a helical antenna inside the structure.
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ATmega8 Microcontroller
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Bug strip Male
Bug strip Female
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7805 Regulator
Voltage regulator integrated circuit
The xx in 78xx indicates the fixed
output voltage it is designed for
Maintains constant +5V regulated
power supply
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16 MHz crystal
Electronic oscillator circuit
Uses the mechanical resonance of a
vibrating crystal of piezoelectric material
Creates an electrical signal with a very
precise frequency
Quartz crystals are used as piezoelectric
resonator
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100 µF/16V capacitor Conducts alternating current (AC)
Blocks direct current (DC)
To store energy
To filter signals according to their frequency
10K resistor
Passive two-terminal electrical
component
Resists the flow of current
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12V Rechargeable Battery
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One way Jumper wire
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CIRCUIT DESIGN
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FUTURE Scope
Fall detection systems need to designed more
accurately to avoid false alarms
User friendly features needs to be incorporated to
overcome the evolving frustration
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ADVANTAGEs Automated fall detections using sensors
Even slight manual intervention of pressing of a button
is not required from elderly & paralytic persons
Immediate notification of fall detected to local
physician & one close relative of patient
Cheap & available in affordable rates
Sensors are reliable & damage proof even when used by
heavy bodied patients
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DISADVANTAGEs
False alarms if generated could be frustrating for
seniors.
In case of bad network coverage in mobiles SMS alerts
could be delayed.
Fall SMS Alerts cannot be used with CDMA SIM Cards
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CONCLUSION
Fall detection may be necessary for your mother or father’s situation – even with the potential high rate of false alarms.
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BIBILIOGRAPHY