Android based Elderly Assistive System using PSOC

IJIRST –International Journal for Innovative Research in Science & Technology| Volume 3 | Issue 01 | June 2016 ISSN (online): 2349-6010

Android based Elderly Assistive System using PSOC Madhuri Lokare PG Student Department of Electronics & Telecommunication Engineering Pune University, SKNCOE

Wrushali Mendre Associate Professor Department of Electronics & Telecommunication Engineering Pune University, SKNCOE

Abstract Elderly assistive system incorporates a communication network that connects with different electronic appliances and services to allow them to remotely control them. The given assistive system is expansion of next generation smart home and assistive environment. The elderly assistive system will assist the old age people for their daily routine to be performed at the ease of pressing button. The system designed is based on PSOC, multiple sensors and also a wireless network services which in combination is used to monitor the different devices. This paper presents the hardware and software implementation of a control system to assist the elderly people.

Keywords: PSOC, Sensors, Wireless Network, Assistive System _______________________________________________________________________________________________________ I.

INTRODUCTION

The wireless network technology is increasing day by day. This has prompted us to use this technology to remotely control electronic appliances and other devices. In this paper we will describe a system, which is based on PSOC and android phone. The PSOC is a wall mounting unit which acts as the heart of the system. The different electronic devices and sensors are connected to PSOC. The controlling of these devices is done with the help of Android Phone. The advantage of smart phone is that it can be carried easily and would be helpful to elderly people. This paper aims at comfort as well as provides security for life, including the memo of daily execution able works. Today our lives are totally occupied by many scheduled time tables. Therefore there is an urge to proceed in this direction to ease the lives by creating something very subservient.

II. LITERATURE SURVEY Development of health care system in recent years is increased in both academia and in industry. Although assistive system is not a new term in science community, it is quiet much more away from people’s imagination. Thus, in this section, we provide an overview of some of the existing systems and projects, and related service composition work.

Android Based Smart Home Automation System with using Wireless Networking: This system presents a Bluetooth technology in home automation and controlling environment. It proposes a network, which contains a host controller (smart phone), wireless network and multiple client modules (home appliances). The client modules communicate with the host controller through Bluetooth devices. The prototype implementation of the proposed system is evaluated based on the criteria considered after the requirement analysis for an suitable home automation system.

Fig. 1: Bluetooth based Home Automation System

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Android based Elderly Assistive System using PSOC (IJIRST/ Volume 3 / Issue 01/ 044)

Open Care Project: Open care Project is basically a combination of different assistive devices into one unit. They have made different prototypes but not able to combine these entire prototypes into one, which includes customize developed phone calls, infra. Message, reminders, alerts, GPS support etc. The other prototypes of hand-over sensor communication solution, the third function include accelerometer and compiled the data to use with other sensors [5]. But all these separate unit’s needs to become single solution, which is the objective of the project.

GSM Based Home Automation System: The home automation system provides safety and security system which is very useful and economical. It provides simple and easy way to control the household appliances with a single SMS or by using an android application. The main advantage here is that even though the controlling can be done by the android application which has safety features but in absence of an android mobile phone one can control it by sending a normal SMS to the GSM modem. Also the safety and security system can be easily installed in the house and used. It informs the owner in case of fire, gas leakage and theft even when the owner is not in the house.

Fig. 2: GSM based Home Automation System

III. PROPOSED WORK The elderly assistive system is as shown below:

Fig. 3: Elderly Assistive System

As shown in the above figure, the proposed system is comprised of multiple units. The user interface is present in smart phone, which is an android application specially designed and built for this project. The android application communicates with the embedded modules wirelessly using Wi-Fi technology. Key hardware components that make up the elderly assistive system are the Smart Phone, the PSOC Board, the WIFI module connected to the PSOC board and relay switches that drive some electrical appliances. The other components and sensors that are also present include a 16x2 char LCD display, a Temperature sensor, Heart rate sensor, gas detection sensor. Each modules of the system is explained as below:

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Android based Elderly Assistive System using PSOC (IJIRST/ Volume 3 / Issue 01/ 044)

PSOC Board: PSOC used is the heart of the system to connect to different the embedded modules. The microcontroller used in PSOC is ARMŽ Cortex™-M0. PSOC kit is chosen because of its features which are essentialfor this project. The features of PSOC are as follows: 32-bit MCU Sub-system, which is Programmable analog and digital blocks, Low power operation, capacitive sensing, segment LCD drive, serial communication, 36 programmable GPIOs.The different embedded modules are interfaced with the PSOC board.

Following figure shows the PSOC Board

Fig. 4: PSOC Board

Wi-Fi Module: The Wi-Fi module allows us to wirelessly transmit and receive data. The Wi-Fi module used supports IEEE802.11b/g/n Wireless Standards. The Wi-Fi module used is interfaced with PSOC kit using serial interface for data transfer. The USR-WIFI232-T employs the world's lowest power consumption embedded architecture. This Wi-Fi module communicates with android phone using Wi-Fi network. Following figure shows the USR-WIFI232-T module used.

Fig. 5: Wi-Fi Module

Android Phone: For this project any Smart Phone preloaded with Android can be used to operate the system. The Wi-Fi application present in the phone can be used to send data to the Wi-Fi module on the stand-alone embedded systems that would in turn control the electrical appliances.

We have built an android application (WelcomeActivity.apk) which needs to be installed first. When the application is opened it will automatically connect to the particular Wi-Fi device and the application starts to communicate with the embedded module.

Sensors: GAS Sensor: The gas sensor used is a simple liquefied petroleum gas sensor, suitable for sensing LPG concentrations in air. The sensor has the

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Android based Elderly Assistive System using PSOC (IJIRST/ Volume 3 / Issue 01/ 044)

high sensitivity and fast response time. The sensor’s output is an analog resistance, so connect output to ADC. Temperature Sensor: For the temperature the LM35 sensor is used. It has an output voltage is relative to the Celsius temperature. It has low selfheating capability, suitable for remote applications, low cost mainly due to wafer level trimming, operates from 4 to 30v, low impedance output.

Heart Beat Sensor: Heart beat sensor is designed such way to produce digital output of heat beat when a finger is placed on it. When the heart beat Detector is operating, the beat LED blinks in unison with each heartbeat. This digital output can be connected to PSOC directly to Measure the Beats per Minute (BPM) rate. It works on the principle of light modulation by blood flow through finger at each pulse.

Relay Module: The relay module drives (switches ON/OFF) the appliance according to the application. The relay module is controlled by the microcontroller. With the help of android application we can turn ON/OFF the electrical appliances.

Working of System: The Wi-Fi module is interface with the PSOC to set the means of communication between android phone and the modules. In our system the phone acts as a server or the controlling device application. Thus it acts as a main central control, which acts as a user defined interface device where the user controls the application through a touch screen on the phone. Below figure shows the experimental setup of the project.

Fig. 6: Experimental Setup

The graphical user interface has been developed on android application. Using this GUI, user interacts with the system to control devices. For initial communication, user initially has to set up connection between Android application and deployed WiFi network. On successful formation of connection, user can operate the appliances. Below figure shows the developed GUI for the system

Fig. 7: GUI of Home Screen

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Android based Elderly Assistive System using PSOC (IJIRST/ Volume 3 / Issue 01/ 044)

IV. CONCLUSION In this paper we discussed our project based on android application and PSOC which is designed for elderly people to assist them in day to day life. It provides a simple way to control the home appliances, one touch emergency calling, heart beat measurement, temperature measurement, gas detection in case of gas leakage with the help of android application and Wi-Fi network.

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[9] Akanksha Singh, Arijit Pal, BijayRai, “GSM Based Home Automation, Safety and Security System Using Android Mobile Phone”, International Journal of Engineering Research & Technology (IJERT), ISSN: 2278-0181, Vol. 4 Issue 05, May 2015 [10] SubhamaySarker, MithunChakraborty and Anindita Banerjee, “Low Cost Embedded System/Android Based Smart Home Automation System Using Wireless Networking”, International Journal of Electronics and Communication Engineering. ISSN 0974-2166 Volume 7, Number 2 (2014), pp. 175-186 [11] Mohamed Abd El-LatifMowad, Ahmed Fathy, Ahmed Hafez, “Smart Home Automated Control System Using Android Application and Microcontroller” International Journal of Scientific & Engineering Research, Volume 5, Issue 5, May-2014 ISSN 2229-5518 935 [12] Meg E. Morris, Brooke Adair, Kimberly Miller, Elizabeth Ozanne3, Ralph Hansen, Alan J. Pearce, Nick Santamaria, Luan Viegas Maureen Long and Catherine M. Said, “Smart-Home Technologies to Assist Older People to Live Well at Hom”, Journal of Aging Science, Morris et al., Aging Sci 2013, 1:1 [1]

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