Parents will sleep more peacefully thanks to Angee. They will be advised in case the baby is sleeping in dangerous positions through an alarm clock. Moreover if the baby starts crying the system will produce sweet sounds or project lights in order to calm the baby. In fact these functions can be also activated by parents during the day if they has to do little activities in the house and cannot keep an eye on him for few minutes. In short the system will alarm the parents providing relevant information (according to the context),detect baby's position and soothe crying baby’s, contributing to an overall safer and calmer environment.
Angee it's a system that exploits a set of sensors, which are able to detect if the baby is in dangerous position and if the baby is crying, placed on the cradle of the baby and a set of actuators that tries to calm him/her down during day and night. The calming part is composed of projection and music. If the system is not able to tranquillize him/her or he/she is in the wrong position the user is advised through a notification on his phone. The user can disable some calming functionalities.
|Sensing||sound sensor to check the baby's cry, cameras|
|Reasoning||recognize baby position, if he/she is crying/in danger|
|Acting||calm the baby with projector and sounds; alarm the mother if the baby is in danger|
|Interacting||the mother can enable/disable the projector/sounds|
|Sensitive||able to sense baby's problem (see above)|
|Responsive||Able to respond to the needs of the baby and to act on the environment|
|Adaptive||the system is able to understand if the baby is crying => calm the baby, if he is in danger=> alert the mother|
|Transparent||The system behaves in an "embeded" way. The user does not have to know the details of the implementation to use it.|
|Ubiquitous||sensors are in the room and collaborate to analyze the problem|
|Intelligent||(see open issues)|
USER: the tutor of the baby (parents in general)
BABY: the newborn in the cradle
Not visible: we assume that the baby’s face is covered (for example: baby on tummy with the face against the sheets) or baby outside cradle.
user: the tutor of the baby (parents in general)
projector: a simple system of lights and shadows
|1||the system is able to monitor baby’s position through face recognition by using 2 cameras||FR.1.1||Face: The system continuously checks if the baby's face is visible.||1|
|FR.1.2||Cradle-check:The system continuously checks if the baby is inside or outside the cradle.||4|
|FR.1.3||Not_visible_alarm: If the baby's face is not visible and the baby is inside the cradle, it sets the "FACE NOT VISIBLE" alarm: sends a notification to the user.||1|
|FR.1.4||Not_visible_alarm: The "FACE NOT VISIBLE" alarm is not send more than once every 30 seconds.||1|
|2||the system is able to sense the baby’s cry and it will react if the baby is crying|
|FR.2.1||Cry_check:The system continuously checks if the baby is crying||1|
|FR.2.2||Cry:The system assumes that the baby is crying if the sound is louder than the ambient noise level in db||1|
|FR.2.3||Cry_Reaction:If the baby cries for more than 5 seconds, the system turns on calming music in the speakers and the wireless LED lighting in red.||1|
|FR.2.4||Project:The lighting is used to project star shapes in the wall.||3|
|FR.2.5||Stop:If the baby is not crying for 30 seconds, the music and lights will be turned off.||2|
|FR.2.6||Limit:If the baby keeps crying for more than 10 minutes (in the presentation this will be set to 1 min,for us to be able to show it), the system turns off the music and the LED.||3|
|FR.2.7||Switch_On/Off:The User must be able to switch on/off the music or LED, at any moment, via physic buttons.||2|
|Non Functional area||title||description||area|
|NFR1||Compatbility||All the code of the project is open source.||Usability|
|NFR2||Language||The system will communicate in English||Usability|
|NFR3||Distance||The sound machine is at least a foot (30 centimeters) away from the child's head.||Safety|
|NFR4||Sounds||The sound machine should produce low-pitched sounds.||Safety|
|NFR5||Electricity||the system must be plugged in||Efficiency|
|NFR6||Supported system||the system supports smartphones||Usability|
|NFR7||Where||the system can be used in every room of the house as the product can be transported||Portability|
|NFR8||Color||The LED color projected at night should not be blue||Safety|
forsee how the baby will react to the system
make the system understand that some sounds/videos calm the baby more than others in order to reuse baby's favourite more often
implement a mechanical system of rotating toys to entertain the baby
do an application in order to enable/disable calming functionalities
A baby's own cry is 10 times louder than a hair dryer.
What light colors will calm down a baby?
Don’t use blue light at night.Some flurescent lights are sold with coatings that can shift the color away from blue wavelengths.
Use dim red lights for night lights. Red light has the least power to shift circadian rhythm and suppress melatonin.
What musics will calm down a baby?
The sound machine can not go higher than 75 Db. Around 65 to 75.
The sound machine at least a foot (30 centimeters) away from the child's head.
Dr. Harvey Karp, edition.cnn.com/2014/03/03/health/noise-machines-study/ Use low pitched sounds
Low pitch rumbly sounds are better for a baby's sleep but for promoting sleep, he says, aim for softer and lower-pitched.
All the communications and decisions go through a Raspberry pi device, our one and only computational node.
Cameras are located over the cradle, in order to see if the baby’s face is visible, the video streaming is sent to Raspberry.
Microphone is located near the baby’s head, in order to stream the sounds to Raspberry that will calculate if the baby is crying.
Speaker is located near the cradle and it’s controlled by Raspberry.
Lights are located next to the cradle, projecting shapes to the ceiling in colours controlled by Raspberry.
Instapush on the mobile phone where the user, connected with the local server, recives notifications.
Sound audiocontroler, HEXIN
Multimedia Microphone, ewent
Phillips Hue, Phillips
Raspberry Pi 3 Model B, Raspberry
Raspberry camera module, Raspberry
USB Camera, CREATIVE
Sound speakers, Goal Zero
1 breadboard, 2 330 ohm resistors, 2 led diodes, 2 switch, connectors
|Instapush||send alarms to the user and is connected to the Raspberry||Smarthphone|
|Facial Recognition||elaborate the data from the cameras||Raspberry|
|DB calculator||calculate the power in db of the signal received from the microphone||Raspberry|
|LED controller||set specific colors acording to the data retrieved from the microphone and cameras||Raspberry|
|General Controller||gathers all the data and is responsible to send alarms via the local server to the mobile application||Raspberry|
All the following libraries are implemented using Python:
Instapush version 1.0.7
Control the LED using Philips Hue API / Rest Communication with the hue Bridge via Phue library.
Facial recognition/Image manipulation via OpenCV 2.4.13 library.
Decibels calculator via Analyse 1.0.0 and Pyaudio 0.2.8 libraries.
We also use: RPi.GPIO 0.5.11 to control the pins;
Pycurl 184.108.40.206 and StringIO 7.5 to interract with Instapush;
Requests 2.7.0 to control the light;
Numpy 1.11.0, Thread 4.5.0 and time 15.3 to create the code.