ANDROID APPLICATION DEVELOPMENT FOR ENVIRONMENT MONITORING USING SMART PHONES

International Journal of Mobile Network Communications & Telematics ( IJMNCT) Vol. 3, No.3, June 2013
DOI : 10.5121/ijmnct.2013.3305 41
ANDROID APPLICATION DEVELOPMENT FOR
ENVIRONMENT MONITORING USING SMART
PHONES
K. Krishnakanth1
and P. Kavipriya2
1
M.E Embedded Systems, Sathyabama University, Chennai, India.
krishnakoneru99@gmail.com
2
P. Kavipriya, Assistant Professor, Sathyabama University, Chennai, India.
kaveepriya@gmail.com
ABSTRACT
Mobile devices (in particular smart phones and tablets) can be used to monitor quality of life parameters.
Today mobile devices use embedded sensors such as accelerometers, compasses, GPSs, microphones, and
cameras without considering, for example, the air quality or the pollutants of the environment. This paper
presents the possibility to use the smart phones capabilities to gather data from other phones or sensors.
The environment condition’s parameters such as temperature and humidity should be monitored. This point
can be obtained by using distributed devices in different environments that containing high-resolution
sensors and a wireless transmission apparatus for transferring data to smart phones. The Bluetooth was
chosen as a transmission tool since it is embedded in all smart phones.
KEYWORDS
Wireless sensor Networks, Bluetooth Sensors, Environment sensing, Smart phones.
1. INTRODUCTION
The cell phones are one of the inseperable parts of the people life for contacting each other via
text and voice. Inside Personal Digital Assistant (PDA) has more facilities such as check mail,
play game, and receive file etc., that allows the user to have more services. The combination of
abilities of these two mentioned devices brought up the new devices called smart phone, that can
work with different kind of application depending of their operating system. Today smart phones
are the equipped devices that are used in many different sectors such as business, healthcare,
social networks, environment monitoring safety and transport. For enabling related application to
consider different domains, a set of embedded sensors such as
accelerometer, compass, gyroscope, Gps, microphone and camera are directly included to smart
phones. The orchestration of the computing communications and sensing capabalities of the smart
type of mobile phone enables participatory or opportunistic operations. In case of moving, there
are two types of sensors : first the wearable sensors that are wore by people. Some devices are
capable to connect and transfer data as an IP based system ,with devices via Bluetooth such as
PDA’S and cellphone also in some projects. The use of memory cards as a data storage are
considered. Their cellular phone send periodically the data sensed on their own condition to a
central data base. Bluetooth based system are not also reliable to have a continuously
connectivity in this scenario, Second mobile phone to web using mobile phone for personal
reflection on environment impact. The phone records and uploads location every few seconds to
a secure server. Based on these location-time traces and also tagging the activities (such as
walking, biking, driving, etc).The system can give to the users environmental information. In

42
some cases there is no possibility to use camera or text messages for gathering information, for
example in moving situation (such as bicycling or driving). In the case of phone mobile to web,
there is another option for monitoring changes, for instance the participants use their mobile to
take a picture from certain locations and the upload these picture to the web portal. Moreover,
mobile phone and web cam can use to provide information about family and doctors . Sensing
and recording will be accomplished automatically. Environment sensors ,such as
temperature, humidity, solar radiation, pressure and so on can be placed both in outdoor and
indoor sites. There are environmental sensors that monitor some specific elements such as
CO2,O2,H2 and so on. In most cases the kind of sensor network is organized as a short distance
transmitter of data. Low power and low cost are the main characteristic of these sensors .The
following parameters will be affected on the sensors structures and subsequently their platforms
• Deployment(activities)
• Location tracker(indoor/outdoor)
• The application
• Data(that should be processing and inferring)
The different scenarios to monitor the environment using wireless sensor networks can be
accomplished via, personal group and community. It is worth to know that the mixed of the
following approaches is possible having environment information is simpler today with above
scenarios in the case of moving. Monitoring temperature and humidity of an environment of some
fields such as medical social services and agriculture are useful for controlling and consequently
alarming .The authors proposed a temperature sensing mobile robot as a solution for temperature
measurement that applied in airport and hospital. It is also suggested to use the robot for the heat
temperature detecting fore fire fighting. A wireless communication platform of distributed
temperature sensors for transmitting data to an immobile client is proposed. Receiving data from
both pre planned or robot sensors can be accomplished via mobile devices, montoring
temperature in vehicles refrigerator is another sample to provide information.
Applying Bluetooth as a transceiver enables the mobility of the receiver. Today, the Bluetooth is
embedded to all smart phones. A part from the mobility and a Embedded Bluetooth to all smart
phones, according to their operating system, their programmable ability makes them capable to
have application. The potency active the smart phones to role as a client to gather analyze and
verify data. A novel approach to acquire temperature and humidity using low cost and low power
components is studied in this paper, using Bluetooth communication for the transmission of the
acquired data to the transmission of the Acquired data to the android based smart phone. In
existing system, there is no reliable wireless communication to monitor the environmental
parameters through wired or wireless need an additional device to display that. The parameters
can be monitored in control center but that cannot be monitored with remote access. Mobile
devices can be used to monitor quality of life parameters. Today mobile devices use embedded
sensors such as accelerometers, compasses, Gps, microphones and cameras with out considering
,for example the air quality or the pollutants of environment. The paper presents the possibility to
use smart phones capabilities to gather climate conditions parameters such as temperature and
humidity is a prominent factor to control the changes of the environmental condition of living or
working places for the human being .This point can be obtained by using distributed devices in
different environment that containing high resolution sensors and wireless transmission for
transferring data to smart phones. The Bluetooth was chosen as transmission tool since it is
embedded ,since it is embedded to all smart phones and it can work in the absence of wi-fi
connection. Smart phones are the programmable tools to have different kind application that
allows communication with other devices and also gathering, analyzing and verifying data. In this
paper a novel interface by applying a Bluetooth based sensor to sense temperature and humidity

43
for monitoring of the environmental conditions using android based smart phone is introduced. In
this paper, a novel interface by applying a Bluetooth-based sensor to sense Temperature and
humidity for monitoring of the environmental conditions using the android-based smart phone is
introduced.
Figure 1. Hardware Kit
2. ALGORITHM
Step 1:.Start
Step 2.Initialize Analog to digital values to pic Microcontroller
Step 3.Initialize UART to pic microcontroller.
Step 4.Initialize LCD screen
Step 5.Sample Humidity sensor and get digital value.
Step 6. Sample Temperature sensor and get digital value.
Step 7.Display Temperature and Humidity value in Lcd.
Step 8.Send Humidty value via UART to Bluetooth
Step 9. Send Temperature value via UART to Bluetooth
Step 10.Repeat the process until both the temperature and humidity values on the LCD.
3. FLOW CHART

44
4. BLUETOOTH BASED TEMPERATURE AND HUMIDITY ACQUISITION
SYSTEM
The Bluetooth-based temperature and humidity acquisition system consists of a device
comprising a sensor and a microcontroller that wirelessly transmits these climatic parameters to a
receiver using the Bluetooth communication system. For the realization of this system, a very
precise temperature and humidity sensor (SHT11 from Sensirion, temperature range from -40 to
+125°C and accuracy of0.4°C,humidity range from 0 to 100% and accuracy of 3%) was inserted
to the board. The sensor was chosen for its very low power consumption (about 80µW) and high
accuracy. It communicates using the IC protocol the environmental parameters to a
microcontroller (C8051F314 from Silicon Labs Inc), which was selected for its low power
consumption as well (about 1mW for 1MHz operation) and its internal characteristics that fits the
requirements of the device. The microcontroller acquired temperature and humidity values from
the sensor each 10 second, and it is connected to a Bluetooth module using its embedded UART
(Universal Asynchronous Receiver-Transmitter).
5. SMART PHONE APPLICATIONS
There are a number of smart phone platforms for developers, such as iOS, Symbian, Android,
and Windows Mobile. The iPhone with the iOS operating system was the first choose of this
research but rejected because of limitation of the Apple on using hardware for programming
specially with the ports related to the Bluetooth. The Apple just allows to the commercial
program to communicate via Bluetooth with non Apple devices based On an agreement. The
Android has been Chosen in this paper since it is easy to customize and open to Work with
different hardware specially Bluetooth. The Android Software development kit (SDK) Version 13
with the ADT Plug-in for Eclipse was Applied for this research. The android SDK’s emulator
Was helpful to test the UIs (UserInterfaces) before installing on the mobile phone. An application
called a BluSen was developed to acquire data from the Bluetooth-based temperature and
humidity Acquisition system that has described before.
6. RESULTS
The heart of this system is PIC Microcontroller which has temperature and humidity sensor. The
data are sampled from the insole sensors by the microcontroller. The PIC microcontroller is in
turn connected to the Bluetooth module (AUBTM-20). This module is capable of wireless serial
data transmission and receipt when paired with feedback application with smart phone. The
collection data is said to be done in the smart phone and it is analyzed with the general data of a
person. That can be monitored from control station, and also gather the results simply through
smart phone using android application. Bluetooth device is the interface between both hardware
and software. when PIC microcontroller sends the data via UART to LCD , then both
temperature and humidity values are sensed and monitored . From Pic microcontroller ,android
phone receives the temperature and humidity values via Bluetooth and generates or plotting has
done for temperature and humidity

45
Figure 2. Humidity Graph Figure 3. Temperature Graph
7. CONCLUSION
In this paper we have implemented ANDROID APPLICATION DEVELOPMENT by using
different protocols like Bluetooth, in order to provide wireless communication we have used
Bluetooth and to transfer data from hardware system to our Android Mobiles. Here the main
module is PIC Controller that is PIC18F4480 controls the entire system. And by using android
mobile we can pass the commands so after receiving those commands it will operate the nodes.
Here we have monitor two sensors temperature and humidity sensors as said before and
respective graphs are plotted.
REFERENCES
[1] W.K. Chen, “Linear Networks and Systems” Belmont, CA: Wadsworth, 1993, pp. 123–135.
[2] H.O’Brein,”Smart Phone Support for Bluetooth Body Sensors”, and it was published in 2009.
[3] E. H. Miller, “A note on reflector arrays (Periodical style—Accepted for publication),” IEEE Trans.
Antennas Propagation., to be published.
[4] J. Wang, “Fundamentals of erbium-doped fiber amplifiers arrays (Periodical style—Submitted for
publication),” IEEE J. Quantum Electron., submitted for publication.
[5] Transmission Systems for Communications, 3rd ed., Western Electric Co., Winston-Salem, NC, 1985,
pp. 44–60.
[6] Motorola Semiconductor Data Manual, Motorola Semiconductor Products Inc., Phoenix, AZ, 1989.
[7] T.Wooley,”A Comparative Study of the Android and iphone Operating Systems,” University of
central Florida , 2010.
First Author K. Krishnakanth acquired a BE degree in Electronics and Communication
from Mother Teresa Institute of Science and Technology, Sathupally, Andhra Pradesh in
2010 and a M.E degree in Embedded System Engineering from Sathyabama University in
2013. His Area of interest includes Networking, Mobile Communication.
Second Author P. Kavipriya acquired a B.E degree in Electronics and Communication
Engineering from A.V.C College of Engineering, Mannampandal, Mayiladuthurai in 2000
and a M.E degree in Applied Electronics Engineering from Sathyabama University, in 2005.
She is pursuing Ph.D in Sathyabama University, Chennai. Her area of interest includes
Wireless Communication and Networks

ANDROID APPLICATION DEVELOPMENT FOR ENVIRONMENT MONITORING USING SMART PHONES

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