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CHAPTER 1
INTRODUCTION
1.1 Introduction
This Project is a very good example of embedded system as all its operations are controlled by intelligent software inside the microcontroller. The aim of this project is to control i.e. toON/OFF control of different motors, the electrical or electronic appliances connected to this system from anywhere in theworld. For this purpose user can use any type of Mobile. Thisway it overcomes the limited range of infrared and radio remotecontrols. Using the convenience of SMS and Phone calls, thisproject lets you remotely control equipment by s ending textmessages and all of which can be pre-programmed into thecontroller and easily remembered later.Short Message Service (SMS) is defined as a text-basedservice. That enables up to 160 characters to be sent from onemobile phone to another. In fact, SMS has taken on a life of itsown; spawning a whole new shorthand language that’s rapidly many industries have been quick to make use of thistechnology, with millions of handsets currently in use. Seeing the illiteracy in India we overcome the problem ofreading and writing text messages by providing the facility ofvoice calls with the help of IVR system which would be morehelpful and beneficial to rural and uneducated farmers. Withthis in mind, we’ve designed the project to work with QuectelM95 GSM modem. Some wise individual once aforementioned that system could be a system wherever we will finish off the machinewhenever we’d like.
That’s the distinction between controlled and uncontrolled system. Our project is regarding create this systemeconomical and dynamic. Because the name instructed the automated management is for dominant the motor from remote place,look over its operational conditions; get feedback from the motor itself. Our target is to manage the motor from distant place bymobile DTMF tone and conjointly get feedback by SMS whereas it’s in ON or OFF condition. We tend to conjointly make surethe safe operation of the motor by police investigation the voltage of the supply and guarantee feedback from system whereas it’sover or below voltage. Once more we tend to conjointly get these feedbacks by SMS additionally. GSM network is all over in ourcountry that’s why we decide GSM network to control our motor conjointly transferring feedback data through it. We tend toconjointly use GSM network as a result of if we tend to use it then we tend to don’t have to be compelled to establish furtherinstrumentation for networking. To transmit feedback signals we tend to use GSM electronic equipment at the motor finishconjointly generate management signal by mobile DTMF as a result of it’s terribly simple to get DTMF by mobile station and send feedback SMS by electronic equipment additionally. In industrial sector we tend to hope our project is become handy and value effective to control motor and provides its protection.

1.2 Need of Project
Many industries have been quick to make use of GSM based technology, with millions of handsets currently in use. As new models with “must have” features hit the market, older models become virtually worthless and if not recycled, end up in landfill. With this in mind, we’ve designed the Quectel M95 GSM modem.Since it has very Good range an accuracyas compared with SIM 300 and SIM 900.

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1.3 Target Community of Project
• In Industrial starter motor.
• In Agriculture fields.
• VTS
• Industry PDA
• Personal tracking
• Wireless POS
• Smart metering
1.4 Scope of Project
Problems caused due to the existed systems are doesn’t provide any power status, motor on/off status. Some of the systems are purely SMS based systems. But many of farmers didn’t know about SMS.
So our intension behind is minimizing the work of farmers, improving the use of irrigation, maintaining optimal usage of electricity to provide an interactive system to farmers .The main aim of this project is to provide flexibility to trigger the motor pumps from any location in an easy way.

1.5 Objective of Project
The main objective for designing the project is that to develop user friendly testing software. That’s benefits minimum time required for testing Quectel M95 GSM modem.Quectel M95 GSM modem use in industrial starter motor which is our company requirement.
Quectel M95 GSM Modem because previous GSM series SIM300 ;SIM 900 having lot of problem first common problems found in that series. Modem initialization time is very high in SIM300 ;SIM 900. It takes approximately 5 to 10 minutes for initialization where Quectel M95 GSM Modem it takes only 1 minutes time for initialization.

1.6 Gantt chart
Table1.1 Gantt chart
Week 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
Literature survey
Scope of project
Collecting datasheets and document
Searching and availability of component
Design
Simulation
PCB Designing
PCB Making(drilling and etching)
Mounting of components and soldering
Programming
Testing and troubleshooting
Project Report Preparation

CHAPTER 2
LITERATURE SURVEY
History
GSM is a global system for mobile communication GSM is an international digital cellular telecommunication. The GSM standard was released by ETSI (European Standard Telecommunication Standard) back in 1989. The first commercial services were launched in 1991 and after its early introduction in Europe; the standard went global in 1992. Since then, GSM has become the most widely adopted and fastest-growing digital cellular standard, and it is positioned to become the world’s dominant cellular standard.
Today’s second-generation GSM networks deliver high quality and secure mobile voice and data services (such as SMS/ Text Messaging) with full roaming capabilities across the world. The Global System for Mobile Communication (GSM) network is a cellular telecommunication network with a versatile architecture complying with the ETSI GSM 900/GSM 1800 standard. Siemen’s implementation is the digital cellular mobile communication system D900/1800/1900 that uses the very latest technology to meet every requirement of the standard.
Now a days most likely used GSM modems are SIM 300 and SIM 900 that are triband and quad band GSM modem respectively. Comparing with newer version of GSM modem i.e. Quectel M95 GSM modem is compact in size, Ultra low power consumption and extended temperature range.

Fig.2.1SIM 900

The detailed comparison between GSM modems is shown in below table.

Table.2.1 Comparison between GSM modem

Quectel M95 GSM modem
M95 is one of the smallest Quad-band GSM/GPRS modules in LCC castellation packaging with the compact size of 19.9 × 23.6 × 2.65mm, Ultra low power consumption and extended temperature range.
With surface mounted technology, the low profile and small size of LCC package makes M95 easily embedded into the low-volume applications and ensures the reliable connectivity with the applications. This kind of package is ideally suited for large-scale manufacturing which has the strict requirements for cost and efficiency.
Built-in unique QuecFOTATM technology allows M95 to update the firmware remotely. Additional features such as integrated TCP/IP protocol stack, serial multiplexer and enhanced AT commands guarantee fast and reliable transmission of data, voice, SMS via GSM/GPRS network and extend the functionality of the application without adding cost.Its tiny size and Ultra low power consumption makes M95 a very cost effective and feature-rich platform that is quite suitable for a wide range of M2M applications such as VTS, Industry PDA, Personal Tracking, Wireless POS, Smart Metering and many other M2M applications.
Enck, W., Ongtang, M., McDaniel, P. 1,” A Study of Android Application Security” Android is an OS designed for smartphones. Depicted in Figure 1, Android provides a sandboxed application execution environment. A customized embedded Linux system interacts with the phone hardware and an off-processor cellular radio. The Binder middleware and application API runs on top of Linux. To simplify, an application’s only interface to the phone is through these APIs. All application is executed within a Dalvik Virtual Machine (DVM) running under a unique UNIX uid. The phone comes pre-installed with a selection of system applications, e.g., phone dialer, address book. Applications interact with each other and the phone through different forms of IPC. Intents are typed interprocess messages that are directed to particular applications or systems services, or newscast to applications subscribing to a particular intent type. Persistent content provider data stores are queried through SQL-like interfaces. Background services provide RPC and callback interfaces that applications use to trigger actions or access data. Finally user interface activities receive named action signals from the system and other applications. Binder acts as a mediation point for all IPC. Access to system resources (e.g., GPS receivers, text messaging, phone services, and the Internet), data (e.g., address books, email) and IPC is governed by permissions assigned at install time. The permissions requested by the application and the permissions required to access the application’s interfaces/data are defined in its manifest file. To simplify, an application is allowed to access a resource or interface if the required permission allows it. Permission assignment—and indirectly the security policy for the phone—are largely delegated to the phone’s owner: the user is presented a screen listing the permissions an application requests at install time, which they can accept or reject.

Skurski and Swiercz 2 propose a control system based on VNC for Symbian OS smartphones. This system was designed to improve application testing systems in mobile devices due to the lack of resources in mobile devices and the high cost of test environments. Also the solution proposed could be used to perform remote configuration. As part of the Android platform exists the Android Debug Bridge (ADB) protocol 3 to provide debug functionality on devices. The platform integrates this protocol and it offers a service of server when is configured on the device. Other aspect to be considered is the remote visualization mechanisms that are useful for achieve a remote display of the devices. The most popular system designed to perform remote control of devices is Virtual Networking Computing 4. There are a large number of implementations to this solution including applied to Android software stack. It has an open protocol and it is widely deployed in the open source community. This solution adapts very well to provide part of the functionality of the architecture, and it will be studied further.This paper focuses on the control of Android platforms. This is an open platform that allows using other technologies (also open). In addition, Android platform allow the development of new ideas easily and test them with a set of open standards . The prototype generated as implementation of the proposed architecture will be provided also as free software. According to data released by Nielsen 5, half of the consumers who recently purchased a smartphone chose an Android smartphone.

CHAPTER 3
DESIGN METHODOLOGY
3.1 System requirements and Specifications
Key benefits
• One of the smallest Quad-band GSM/ GPRS modules
• Easier soldering process with LCC package
• Embedded Class-AB amplifier
• Power consumption as low as 1.3mA
• Embedded powerful Internet service protocols, multiple Sockets ; IP addresses
• eCall / ERA-GLONASS (Supported in specific firmware)
• QuecFOTATM
• Jamming detection
• DTMF decoding
Table 3.1 Specification of required components
3.1.1 General features
1 Quad-band 850/ 900/ 1800/ 1900 MHz
2 GPRS Multi-slot Class 12, 1~12 configurable
3 GPRS Mobile Station Class B
4 Compliant to GSM Phase 2/2+ Class 4 (2W @ 850/ 900 MHz)
Class 1(1W @ 1800/1900MHz)
5 Supply Voltage Range 3.3~4.6V 4.0V nominal
6 Low Power Consumption 1.3mA @ DRX=5
1.2mA @ DRX=9
7 Operation Temperature -40 °C to +85 °C
8 Dimensions 19.9 x 23.6 x 2.65mm
9 Weight Approx. 3.0g
10 Control via AT commands GSM 07.07 ,07.05 and other enhanced AT Commands

3.1.2 Specifications for Data
GPRS Class 12 Max. 85.6 kbps (uplink ; downlink)
PBCCH Support
Coding Schemes CS 1, 2, 3, 4
CSD Up to 14.4 kbps

3.1.3 USSD
Non Transparent Mode
Protocols PPP/ TCP/ UDP/ HTTP/ FTP/ SMTP/ MUX

3.1.4 Specifications for SMS via GSM /GPRS
Point-to-point MO and MT
SMS Cell Broadcast
Text and PDU Mode

3.1.5 Specifications for Voice
Speech Codec Modes Half Rate (HR)
Full Rate (FR)
Enhanced Full Rate (EFR)
Adaptive Multi-Rate (AMR)
Echo Arithmetic Echo Cancellation
Echo Suppression
Noise Reduction

3.1.6 Interfaces
SIM/ USIM 3V/ 1.8V
UART 2 Interfaces
Analog Audio Chanel 2 Embedded Class-AB amplifier in one channel
RTC Backup
Antenna Pad

3.2 Block diagram and description
3.2.1 Transmitter

Fig.3.1 Transmitter block diagram
3.2.2 Receiver

Fig.3.2 Receiver block diagram

3.2.3 Block diagram Description

Renesas Micro controller:
The RENESAS MCU is True Low Power Platform (as low as 66 ?a/mhz, and 0.57 ?a for RTC + LVD), Supply voltage is 1.6 V to 5.5 V operations, 16 to 512 Kbyte Flash, 41 DMIPS at 32 MHz, for General Purpose Applications.

LED indication:
• Power ON/OFF
When external power supply to controller green led will glow and it is show power is given to unit.
• OL (RED): Over Load Fault.
When current is flowing from circuit beyond settable range this led will glow.
• SMS/CALL (RED): Communication Indication
When user call or sending SMS to unit this led will automatically ON
• NETWORK (RED):
Network Indication when SIM card detect and mobile tower range is there this led will glow.

Max232 IC:
Max232 IC is in SMD Package so it is very small in size due to that it requires less space. The Max232 is used to transmit the Pc data to the Microcontroller and also from controller to Pc. It is also used to shift the voltage level low to high a vise a versa. The MAX232 is a dual driver/receiver that includes a capacitive voltage generator to supply TIA/EIA-232-F voltage levels from a single 5-V supply. Each receiver converts TIA/EIA-232-F inputs to 5-V TTL/CMOS levels.

Current Transformer (CT):
This Device is mainly used to monitor the Current .The CT is used to set the Starting Current of the Motor. A current transformer is an instrument transformer, used along with measuring or protective devices, in which the secondary current is proportional to the primary current and it differs from it by an angle i.e. approximately zero.
Current transformer supply the protective relays with current of magnitude proportional to those of power circuit but sufficiently reduce in magnitude. Input current for CT is 5A and output is 5mA

GSM Modem:
The GSM modem of Quectel M95used since it Has very Good Range an Accuracy As compared With SIM 300 and SIM 900. M95 is a Quad-band GSM/GPRS engine that works at frequencies of GSM850MHz, GSM900MHz, DCS1800MHz and PCS1900MHz. The M95 features GPRS multi-slot class 12 and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.
With a tiny profile of 19.9mm × 23.6mm × 2.65mm, the module can meet almost all the requirements for M2M applications, including Vehicles and Personal Tracking, Security System, Wireless POS, Industrial PDA, Smart Metering, and Remote Maintenance ; Control, etc.
M95 is an SMD type module with LCC package, which can be easily embedded into applications. It provides abundant hardware interfaces like Audio and UART Interface.
Designed with power saving technique, the current consumption of M95 is as low as 1.3 mA in SLEEP mode when DRX is 5.
M95 is integrated with Internet service protocols, such as TCP/UDP, FTP and PPP. Extended AT commands have been developed for you to use these Internet service protocols easily.

Power Supply :
When we give single phase supply to GSM base controller for external power green led will glow and it is show power is given to unit.The primary function of power supply is to convert electric current from a source to the correct voltage and frequency to power the load. Other function that power supplies may perform include limiting the current drawn by the load to safe levels.
We required 3.3V power supply for Renesas microcontroller, 4V for audio IC (P89170), and 12V power supply for relay.
When we give single phase supply to GSM base controller for external power green led will glow and it is show power is given to unit.

Relay:
Relay is an electrically operated switch. Relays are used where it is necessary to control a circuit by a separate low power signal, or where several circuits must be controlled by a one signal.
Here we have used the relay to Switch the Motor On an off we have used Leone Company relay which operates on 6V DC its Function is SPDT that is single pole Double Throw and it has magnetic coil in it.

Quectel M95 GSM modem:
M95 is a Quad-band GSM/GPRS engine that works at frequencies of GSM850MHz, GSM900MHz, DCS1800MHz and PCS1900MHz. The M95 features GPRS multi-slot class 12 and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.
With a tiny profile of 19.9mm × 23.6mm × 2.65mm, the module can meet almost all the requirements for M2M applications, including Vehicles and Personal Tracking, Security System, Wireless POS, Industrial PDA, Smart Metering, and Remote Maintenance ; Control, etc.
M95 is an SMD type module with LCC package, which can be easily embedded into applications. It provides abundant hardware interfaces like Audio and UART Interface.
Designed with power saving technique, the current consumption of M95 is as low as 1.3 mA in SLEEP mode when DRX is 5.
M95 is integrated with Internet service protocols, such as TCP/UDP, FTP and PPP. Extended AT commands have been developed for you to use these Internet service protocols easily.

DTMF

Fig.3.3 Keypad to give commands
Table3.2 Keypad command’s description

Press 1 –> MOTOR ON (???????????) For Switch ON the Site Motor
Press 3 –> MOTOR OFF (??????????) For Switch OFF the Site Motor
Press 4 –> SET CURRENT (????????????????????) For Storing the Motor Current in Memory of GSM Controller
Press 5 –> AUTO MODE (?????????????) For Auto Mode Selection Unit Button Should be on AUTO Position
Press 6 –> RESET FAULT (??????????) For Clear the Faults Occurred
Press 7 –> CHANGE PASSWORD For changing exiting password
Press 8 –> MANUAL MODE For Manual Mode Selection Unit Button can be on any Position
Press 9 –> STATUS (??????????????????) For Current Status Off Motor and Starter

3.2.4Working
The MICROSTART GSM CONTROLLER has inbuilt Interactive Voice Response System (IVRS) controlled, start/stop and remote monitoring. User can control the motor by voice call and SMS only by entering the password, so it provides security to the user.The unit can be installed at all places where controlling is needed for three-phase motor. It will monitor and measure all three phase voltages. The controller displays the fault occurred in the system through LED’s and accordingly send the SMS to the registered numbers, so that the user will be aware of the current status of the motor. Also the system will be providing the information in the regional language so that any ordinary person can handle that system. The signal conditioning block is use to make voltage within the positive range which can be read by the ADC which is in microcontroller.The SPDT relay is used as a switch, to ON/OFF the motor.
The microcontroller continuously monitor the RYB phase and if voltage is under, over voltage or not within the range then it will OFF the motor ; send the corresponding message to user through GSM modem.LED’s are used for corresponding indication like dry run, SPP, power on, etc.
IC aP89170 is used for sound recording(clip).

3.3 Hardware design

Fig.3.4 Hardware architecture
3.3.1 RF:
M95 provides an RF antenna pad for antenna connection.M95 comes with grounding pads which are next to the antenna pad in order to give a better grounding.
To minimize the loss on the RF trace and RF cable, take design into account carefully. It is recommended that the insertion loss should meet the following requirements:
• GSM850/EGSM900 is

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