Intelligent baby rocker

1. INTELLIGENT BABY
ROCKER
Guide Group members
Mebin P M
Sangeeth Unnikrishnan
Afshan K Rahman
Athira M
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Asst.Prof Vijayalakshmi K

2. INTRODUCTION
• Low cost indigenous electronic cradle.
• Swings automatically when baby cries.
• Keeps the baby in hygienic condition.
• Alarms when baby does not stop crying within a stipulated time, which intimates
that, baby needs attention.
• Ensures the child a lively mothercare.
• Online video streaming.
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3. AIM
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•To design a baby rocker.
•Use of a cry detection system to detect baby cry
•To get a swing motion for cradle after detecting the cry
•Wet sensor to detect wet bed condition
•Indicate a wet bed condition and “long duration of cry”
•To get a real time imaging of the baby possible

4. BLOCK DIAGRAM
Microcontroller
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Wet sensor
MIC
Signal
Conditioning
Camera
Driver
Circuit
Motor
Baby
Bassinet
Melody
generator
Raspberry Pi

5. 5
 Microphone
It detects the sound and converts it to an electrical signal. A condenser microphone is used
here, which converts sound based on capacitance change.
 Audio Amplifier
LM386 is the audio frequency amplifier used here. Thus the output form microphone is
amplified to required levels for use by microcontroller.
 Wet Sensor
It detects the presence of water. A moisture sensor having two leads in mesh form is used for
this.
 Microcontroller
ATmega328 is the microcontroller used here. It is a 28 pin single chip microcontroller.
 Relay Motor Driver
It is electrically operated switch, used to control a circuit by low power signal with complete
isolation between controller and controlled circuit.

6. 6
 DC Gear motor
It is a 12 V,100 rpm dc motor with metal gear box.
 USB Camera
It is video camera that feeds image in real time through or to a computer network.
 Raspberry Pi
Used for camera interfacing in this project.

7. 7
CIRCUIT DIAGRAM

8. 8
POWER SUPPLY

9. 9
 This device is used to swing automatically after detecting a cry with
the help of a microphone and a motor.
 It also generated a melody on detecting a wet mattress.
 The system also produced a melody when the baby doesn’t stop crying.
 Online video streaming of the events were performed. Thus the system
worked successfully for the desired test conditions.
EXPERIMENTAL RESULTS

10. CONCLUSION
Intelligent baby rocker was designed and made. A swing motion has been observed on
detecting a baby cry. A prolonged cry initiated a melody. Wet mattress was notified with
another melody. A real time tracking of events was observed. Thus an overall output of the
designed system was obtained.
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11. FUTURE SCOPE
 Additional GSM module can be attached to link the system to smart phones.
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12.  REFERENCES
[1] Steven Bang; Richard Lam; Natallia LoCicero; , “Rock Me Baby: The Automatic Baby Rocker” Project for, San
Jose State University, Department of Mechanical and Aerospace Engineering, May 17, 2011.
[2] Yang Hu; Weihua Gui; , “Adaptive Sway Control for Baby Bassinet Based on Artificial Metabolic Algorithm”
School of Information Science and Engineering, Central South University, China.
[3] Marie R. Harper; La Mirada; Maxine R. Blea; , “Automatically rocking baby cradle”, US 3769641, Date of
Patent: Nov. 6,1973.
[4] Gim Wong, “Automatic baby crib rocker” US 3952343, Date of Patent: Apr. 27,1976.
[5] Chau-Kai-Hsieh; Chiung Lin; Taiwan; , “Baby Cry Recognizer” US 5668780, Date of Patent Sep. 16,1997.
[6] Anritha Ebenezer; Anupreethi. S; , “Automatic Cradle Movement for Infant Care” Undergraduate Academic
Research Journal (UARJ), ISSN : 2278 – 1129, Vol.-1, Issue-1, 2012.
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13. THANK YOU
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