Engineering students projects in embedded systems

Digital Storage Oscilloscope (student projects,academic projects,btech project)

An oscilloscope is a type of electronic test equipment that allows signal voltages to be viewed, usually as a two-dimensional graph of one or more electrical potential differences(vertical axis) plotted as a function of time or of some other voltage (horizontal axis).It is an electronic device in which PIC-18F452 is the main platform. PIC controls entire process using peripheral devices such as voltage divider, LCD display, PC interface etc.

Voltage divider circuit consists of resistor relay network circuit which converts the input voltage compatible for PIC input.

Built in ADC PIC converts the analog input signal into digital data. Analog to digital conversion as well as the entire process is controlled by the program.

The output stage consists of 48*84 character LCD display, PCD8544 is provided for user interface. It is a low power CMOS LCD controller/driver, designed to drive a graphic display of 48 rows and 84 columns. All necessary functions LCD supply and bias voltages, resulting in a minimum of external components and low power consumption. The PCD8544 interfaces to microcontrollers through a serial bus interface. The PCD8544 is manufactured in n-well CMOS technology.

Fingerprint Access Control System (student projects,academic projects,btech project)

Fingerprint device is equipped with a powerful processor and a flash memory. This exposes flexible API over a serial interface. Attendance and access control systems are normally configured and controlled using PC software. Users are first enrolled in the device PC system. PC software consists of GUI and a database. Once the users are enrolled in the PC software, it  enrolls the same into the device. Thereafter it can be used as a stand alone device.

Enrolling function is used to enroll users into finger module. PC software initializes this by sending Enrolling command to the device. Device in turn instructs the finger module to enroll the user. Finger module scans the finger and extracts the details and stores the data in its lookup table. After successful registration of finger, the module sends back a success command to device. On receiving that,the device stores user information in its flash memory as an array.

Scanning process is normally initialized by a button press. Device consists of two button dedicated for IN and OUT selection. Once IN/OUT button is pressed, the device instructs the finger module to start scanning. After capturing the image finger module then search the internal data for a match. If it finds the finger then it will return the ID of the finger. On receiving the finger ID device checks it against the user data storage and creates a log entry if the user is still registered in the device. In addition to creating a log entry it also open the lock to provide the access. The device is built around a PIC microcontroller 18F452. This microcontroller consists of 32KB of internal flash memory. Out of these 32KB flash 16KB is used as program memory and rest as data memory.

Smart Home (student projects,academic projects,btech project)

Smart Home seeks to automate man’s routine work and to increase comfort and safety at home by incorporating a variety of home automation and security features with the aid of microcontroller.

The automation features include a water level sensor, remote controlled gate keeper, automatic outdoor lamp, fan control etc. The security features encompasses intruder alarm and fire alarm with a warning message over a telephone line.

Smart Home uses PIC 18F452 to accomplish its task with commendable flexibility and reliability. The prime use of the microcontroller is to control the operation of the machine using a fixed program stored in the ROM. Microcontroller helps in easy manipulation of the home environment based on certain conditions existing within the house.

Attendance Management And Access Control System (student projects,academic projects,b-tech project)

Time Attendance Management System also called Proximity Card Reader, is dedicated for factories, offices etc. The progress of semiconductor technology and wireless communication,RFID(Radio Frequency Identification) tags have been widely introduced instead of barcodes, which can be identified automatically with no contact readers. A RFID tag is composed of an antenna, transceiver and transponder and is also called wireless IC tag or electronic tag.

The system has provision for defining and maintaining details about the employees. The personal, official and contact details of each employee can be maintained using this system. The system helps in monitoring late arrival, early departure, leave, overtime and unofficial duty of employees. Time and Attendance Management System is an efficient and user-friendly system to regulate the attendance of employees.

This system adopts the latest 8-bit processor with high information processing speed. Using CMOS Flash Memory, keeps and stores data over decade under the status of electricity cut-off, the maximum of record capacity over 30 thousand communication methods:RS232(optional TCP/IP).

Intruder Detection System (student projects,academic projects,btech project)

Intruder Detection System provides security for homes, offices etc with SMS and landline support. It is an electronic device in which PIC 16F877 is the main platform. PIC controls entire process using peripheral devices such as DTMF receiver, LCD display, relay driver, sensors etc. interfaced to it. Different types of sensors used here are PIR, magnetic contact, vibration, LPG leakage sensor etc. The architecture of the system is based on event triggered action procedure.

The IC M-8870, here used is a full DTMF receiver that integrates both band split filter and decoder functions into a single 18 pin DIP or SOIC package. The decoder uses digital counting technique to detect and decode all 16 DTMF tone pairs into 4-bit code. Filter section uses switched capacitor technology.

A 48*48 character LCD display, PCD8544 is provided for user interface sensors. It is a low CMOS LCD controller/driver,designed to drive a graphic display of 48 rows and 84 columns. All necessary functions for the display are provided in a single chip, including on-chip generation of LCD supply and bias voltages, resulting in a minimum of external components and low power consumption. the PCD8544 interfaces to microcontroller through a serial bus interface.The PCD8544 is manufactured in n-well CMOS technology.

There are five zones for the system. The zones identify different sensors. A telephone is interfaced with the system. It supports landline and mobile phone having AT command support and serial interface.

A hooter is also interfaced to the system. When an intrusion occurs it is detected by the particular sensor and is displayed by the corresponding zone. Then the interfaced telephone automatically dials the three designated telephone numbers at times of emergency. The main microcontroller controls all peripherals attached to it and do necessary action when an external event occurs. The main module of the systems is the mobile interfacing, LCD display, land phone interfacing, keyboard interfacing, sensor interfacing, relay driver and the real time clock.

Plant Monitoring System (student projects,academic projects,btech project)

Remote monitoring of equipments and controlling of the same is getting so popular now a days. It avoids the need of trained man power at every plant or system.

This equipment is for monitoring the base stations of mobile towers. The base stations of the mobile towers are equipped with complicated machinery which needs to be kept at some fixed temperature. In case of power failure, these stations work on the power  from generator. The proposed equipment monitors the temperature, UPS battery voltage and sends to the monitoring station. They can then decide when to switch on the generator and to make sure AC, UPS battery levels are at safe levels.

The system has high accuracy and is economical. If the system is installed on an area then there is no need of human security. It saves additional cost and human energy.

Robotic Security System (student projects,academic projects,btech project)

The Robotic Security system helps to identify any intruder coming in its path. This system can be used in remote areas, areas which need more protection etc. A gun in the system point to the intruder and start alarming.

The Robotic Security system helps to identify any intruder coming in its path. This system can be used in remote areas, areas which need more protection etc. A gun in the system point to the intruder and alarm start alarms.

Robotic Guide (student projects,academic projects,btech project)

The goal of this project is to create a robot that will follow a specific color of line. The path can be visible like a black line on a white surface (or vice-versa) or it can be invisible like a magnetic field. Sensing a line and maneuvering the robot to stay on course, while constantly correcting wrong moves using feedback mechanism forms a simple yet effective closed loop system. As a programmer we get an opportunity to ‘teach’ the robot how to follow the line thus giving it a human-like property of responding to stimuli.

Practical applications of a line follower: Automated cars running on roads with embedded magnets; guidance system for industrial robots moving on shop floor etc. These robots can be used to explore places which are too dangerous or otherwise impossible for humans to go. It is also used as a terminal selector in airport.