Biometrics & MEMS Sensors Projects


MEMS Accelerometer based Motion Controlled Wheelchair

The aim of this project is to controlling a wheelchair by using MEMS, Accelerometer sensor. MEMS Accelerometer is a Micro Electro Mechanical System which is a highly sensitive sensor and capable of detecting the tilt. The sensor finds the tilt and makes use of the accelerometer to change the direction of wheel chair depending on the tilt. For example if the tilt is to the left side then the wheelchair moves in left direction. Wheel chair movement can be controlled in Forward, Reverse, Left and Right direction along with obstacle detection using ultrasonic sensor.

 MEMS Accelerometer based devices can be easily rechargeable to the common man due to its simpler operation. This device is portable and user can wear it to his wrist like a watch and can operate it by tilting the MEMS, Accelerometer sensor. This project makes use of a micro controller, which is programmed, with the help of C instructions. And a 3-axis accelerometer is used to sense motion. Control equipment fitted patients head or palm is used to control wheel chair. The two geared DC motors through a driver are used for the motion of prototype wheelchair model. If the patient wants to move in a particular direction, say in left, the patient can tilt the accelerometer in that direction. When the accelerometer tilts according to his/her need, the sensor reds the value in the X and Y direction. According to this value motor begin to rotate. The micro controller current is too low to drive DC motors, here we use L293D motor driver. Ultrasonic sensor is used to detect and measure distance of any obstacle in way of wheelchair and it alert it by buzzer sound.   rechargeable battery is also connected to wheelchair to deliver the power supply to this system, 12 volt supply is delivered to motors and 5 volt supply to the microcontroller and sensor using a voltage regulator IC-7805. 

This project can be further enhanced by involving more safety sensors, also can be used wireless device for remote control operation and monitor purpose too. 

Fingerprint Bank Locker

This project is aimed to develop a fingerprint based bank locker system. This system  is an enhancement to the traditional bank locker system that uses keys. Now keys can easily be copied and made by theives who know about it. Also the keys must be taken care of and can also be lost due to some negligence. Well fingerprint based bank locker system is here to solve all these issues. The fingerprinted authenticated bank locker system is safe as well as easy to use and maintain.

 The system design involves an advance microcontroller interfaced to a fingerprint module and dc motor driver for locker door operation. The fingerprint module is used to read fingerprints and first store registered fingerprints against the bank locker record. Now next time a person scans finger the sensor reads it and compares it with past records. Now if match is found with existing prints, it sends the match signal to the microcontroller and the controller also displays this data on the LCD display connected to it. Also the controller drives the driver motor to open the bank locker door and opens it for authorized customers. A buzzer is also used which alarms at the time of each operation of locker door. The door of locker wont open for unauthorized customers.

Automatic Fuel Pump Station based on Bio-Metric and GSM system

The Concept of automatic fuel pump station is here implemented by using the RFID reader which is a Secure password based Identification system and GSM wireless network to monitor the data remotely from any place. The proposed system is applicable at any fuel dispensing application and it would be more useful for the commercial fuel pump station as well in industrial application, The advance technological features makes the system more safe and high secure to the user. As well the auto dispensing of fuel makes more user friendly without engaging any manpower with lesser time consume.

The project is designed using an advance series of microcontroller interfaced to a liquid flow sensor and a solenoid valve for automatic fuel delivery. A RFID reader is connected to the serial communication port of microcontroller, user has to swap a RFID card in reader, if the card (identification code) is authorised then only the user will get access to the system, a (16X2) LCD is connected to the system which will display card ID number and authentication message. At  the first time user, system will ask to enter the mobile number on which user need to receive the transaction data (i.e. Quantity, Cost) . Then system will ask to enter the quantity or total cost of fuel required by the user, a (4x4) metric keypad is also attached to the system for the necessary data entry and operation of system. While press the FILL START key, a solenoid valve (connected to fuel line) is operated ‘ON’ and fuel will start to dispense passing through a flow sensor. The output of flow sensor is connected to a counter/timer circuit of microcontroller which counts these analog pulses ( in ml/sec). While press FILL STOP key, a valve is kept off stopping fuel dispenses and the programme coded in controller calculate the quantity ( in Litre) and cost (in Rs.) at each transaction and shows on LCD (for sub total and grand total). Moreover, these data will be sent to the user mobile over GSM wireless network.

The system can be further enhanced by linking a GSM data to TCP/IP web page, also can be more user friendly by using a touch screen graphics display.    

Automatic Car Parking Zone using RFID and Android Application

Radio Frequency Identification (RFID) technology is very useful technology in automation of vehicle parking system in mall/building. One of the challenging problems for many vehicle owners in big cities is where to park their vehicles. If the parking slot is known in advance one can save precious time and fuel wastage. In this project, the user is informed about the parking slot availability at a particular parking location. The slot availability details are collected using an RFID system and are updated periodically into the database. Entry-point and exit-point of the parking-lots will be under control with RFID readers, labels and barriers. Since there won't be any waiting during entry-point and exit-point the pollution problem will be avoided.

There are three portions in automated car parking system. They are Gate zone with RFID system, Parking zone  and wireless information and pre-booking system. At Gate zone the RFID system, 13.56 MHz passive reader and tag pairs are used and a pair of Ultrasonic sensor monitor entry/exit of vehicle and automatic gate operation using dc motor . For parking zone, DC motor drivers (L298) and IR obstacle sensor are used. DC motor drivers are used to accurate the feedback operation of barrier for car park and IR obstacle sensors are used to sense a park room which is passed through the barrier after showing RFID tag. DC motor drivers and IR obstacle sensors are controlled by Basic-Pro program.

This system also used bluetooth module interfaced to the controller for wireless information such as availability, slot number and payments. This information can access by using an android application run on any remote phone. 

IoT based Auto Fuel Dispenses System using Secure Bio-metric system

The Concept of automatic fuel dispensing is here implemented by using the RFID reader which is a Secure password based Identification system and IOT system to monitor the data remotely from any place. The proposed system is applicable at any fuel dispensing  and it would be more useful for the commercial fuel pump station as well in industrial application, The advance technological features makes the system more safe and high secure to the user. As well the auto dispensing of fuel makes more user friendly without engaging any manpower with lesser time consume.

The project is designed using an advance series of microcontroller interfaced to a Wi-Fi module node MCU for IOT system to monitor the data and controller also connected to a liquid flow sensor and a solenoid valve for automatic fuel dispenses. A RFID reader is connected to the serial communication port of microcontroller, user has to swap a RFID card in reader, if the card (identification code) is authorised then only the user will get access to the system, a (16X2) LCD is connected to the system which will display card ID number and authentication message. Then system will ask to enter the quantity or total cost of fuel required by the user, a (4x4) metric keypad is also attached to the system for the necessary data entry and operation of system. While press the FILL START key, a solenoid valve (connected to fuel line) is operated ‘ON’ and fuel will start to dispense passing through a flow sensor. The output of flow sensor is connected to a counter/timer circuit of microcontroller which counts these analog pulses ( in ml/sec). While press FILL STOP key, a valve is kept off stopping fuel dispenses and the programme coded in controller calculate the quantity ( in Litre) and cost (in Rs.) at each transaction and shows on LCD (for sub-total and grand total).  These data will also be sent to the IOT system over TCP/IP Wi-Fi network and it can be accessed by  Wi-Fi operate device like mobile or PC by entering authenticated ID & password.

The system can be further enhanced by make more user friendly using a touch screen graphics display.