abtechnosolutions
Railway Level Crossing Gate Operation Remotely by Android
Abstract: The project is designed to achieve control over the railway level crossing gate through Android Application by the station master. Opening and closing of railway level crossing gate involves manpower, which could be often erroneous leading to accidents. The proposed system rules out the need of any human involvement at the railway level crossing. This system involves opening and closing of the level crossing gate with help of an Android Application Device. Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. A Bluetooth device is interfaced with the system. When the station master sent command to close from the Android application device (when the train is approaching at the level crossing) to the Bluetooth device which while fed to the microcontroller, sends an output signal which activates a mechanism to switch on the motor to close the gate. To open the gate, another command needs to be sent for the microcontroller to open the gate with help of motor driver IC. In this project we use a microcontroller of 8051 family, and the input to it is a Bluetooth device which receives command from the user Android application. The output to microcontroller is given to a motor through a motor driver IC for required operation. The status, whether the gate is open / close is displayed on an LCD display interfaced to the microcontroller. Further the project can be enhanced by sending an acknowledgement to the sender about the status of the gate.Circuit Diagram:
Embedded Quiz monitoring system with team performance evaluation
Abstract:
Quiz competitions are held everywhere in schools colleges and even in offices and often we see them in televisions as well. Whenever a quiz competition is held, the winner is selected based on the right answer in shortest possible timing. The timing criteria plays a major role as the result relies on it. This project is a microcontroller based quiz monitoring system, which is designed for eight contestants. The controller used in this project is from 8051 family wherein an LCD 16X2 is used to display the results. There are eight push buttons provided for eight contestants to participate in the quiz. This system can detect and record fastest responding contestant among all the contestants. This project not only monitors the fastest finger press, but also displays the time that has been taken by the contestant to answer. The microcontroller records the contestants hit by push buttons which are connected to the port pins that evokes an inbuilt timer in it to start counting the time and finally displaying the time every contestant had taken while answering. The project can be further extended by integrating a Bluetooth Technology where contestants can answer wirelessly using a GUI based touch Screen operation.
Coin Operated Fortune Telling System with Dancing LED:
ABSTRACT:
The Project 89S52 Microcontroller based Coin Operated Fortune Telling System with Dancing LED Effect is an interesting project which uses 89S52 microcontroller as its brain. It uses a Light Dependant Resistor (LDR) for sensing the coin insertion. LED-LDR arrangement is made in the coin box so that the light of LED directly falls on the LDR. If a coin is inserted in the coin box assembly the light falling on the LED is interrupted. This interrupt signal is sensed by the LDR and an NPN transistor sends a low signal to the microcontroller. By sensing the low signal the 16X2 LCD displays a fortune message which is already preprogrammed in the microcontroller. The 89S52 microcontroller contains four ports of each eight pins. In this project two ports are dedicated for LEDs to generate dancing light effect. 16 LEDs are connected with different colour light emissions. A simple yet powerful program is written in assembly language to generate different lighting effects. READY LED is provided to indicate the status of the microcontroller whether it is ready to accept the coin or not. If the LED is glowing means the system is ready to accept the coin.A buzzer is provided for audio effect of the coin insertion. Whenever a coin is inserted in the coin box, the system acknowledges the coin reception by a short beep sound. This buzzer is driven by an NPN transistor. This project uses regulated 5V, 500mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12V step down transformer.
CIRCUIT DIAGRAM :
AUTOMATIC CAR PARKING INDICATOR SYSTEM
ABSTRACT:
Now days in many multiplex systems there is a severe problem for car parking systems. There are many lanes for car parking, so to park a car one has to look for the all lanes. Moreover there is a lot of men labor involved for this process for which there is lot of investment. So the need is to develop a system which indicates directly which parking slot is vacant in any lane. The project involves a system including infrared transmitter and receiver in every lane and a LED & LCD display outside the car parking gate. So the person entering parking area can view the LED display and can decide which lane to enter so as to park the car. Conventionally, car parking systems does not have any intelligent monitoring system. Parking lots are monitored by human beings. All vehicles enter into the parking and waste time for searching for parking slot. Sometimes it creates blockage. Condition become worse when there are multiple parking lanes and each lane have multiple parking slots. Use of automated system for car parking monitoring will reduce the human efforts. Display unit is installed on entrance of parking lot which will show LEDs for all Parking slot and for all parking lanes. Empty slot is indicated by the respective glowing LED.
CIRCUIT DIAGRAM:
Remote AC power control by android application with lcd display
ABSTRACT:
The project is designed to control AC power to a load by using firing angle control of thyristor. Efficiency of such power control is very high compared to any other method. Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. The project uses zero crossing point of the waveform which is detected by a comparator whose output is then fed to the microcontroller. The microcontroller provides required delayed triggering control to a pair of SCRs through opto isolator interface.Finally the power is applied to the load through the SCRs in series. This project uses a microcontroller from 8051 family which is interfaced through a Bluetooth device, which receives signal from Android application device for increasing or decreasing the AC power to the load. A lamp is used in place of an induction motor whose varying intensity demonstrates the varying power to the motor. The varying power results in variation in speed of the motor. The project can be further enhanced by using direct 230 volt supply instead of 12 volt AC to the bridge rectifier for achieving higher voltage control for charging number of batteries in series.
CIRCUIT DIAGRAM:
Cell phone based DTMF Controlled Garage Door Opening System
ABSTRACT: The main objective of this project is to unlock a garage door by a mobile phone using a unique password entered through the keypad of the phone. Opening and closing of garage doors involves human labor. In this proposed system, the opening and closing of a garage door is achieved by using a mobile phone. The owner can call to a mobile phone interfaced to the system which in turn is connected to the garage door that can open/close the door by entering the password. This method is very convenient as one doesn’t have to get down of his car to open/close the door physically. This project is based on the concept of DTMF (dual tone multi – frequency). Every numeric button on the keypad of a mobile phone generates a unique frequency when pressed. These frequencies are decoded by the DTMF decoder IC at the receiving end which is fed to the microcontroller. If this decoded values (password entered by the user) matches with the password stored in the microcontroller, then the microcontroller initiates a mechanism to door opening system through a motor driver interface. Further this project can be incorporated with an EEPROM i.e., a non-volatile memory so that the password can be changed by the owner.
CIRCUIT DIAGRAM:
Flash Flood Intimation over GSM with User Programmable Number Features to The Station Master
ABSTRACT: The main objective of this project is to detect rising water level in a river at a reasonable distance from the rail track/ roadways and intimate that to the respective authorities through SMS, to take appropriate action. For example, railways face major challenges in prior detection of possible flash flood along the track, which might cause accidents. In this proposed system, water level rise is sensed at a considerable distance from the tracks and necessary action is initiated. Thus, many lives and properties can be saved by this warning system. In this project a water sensing arrangement is made which is interfaced to a programmable microcontroller. During flash flood conditions if the device senses a rise in water level beyond a danger mark at a considerable distance from railway tracks, it will alert the station master via SMS. Hence, train services of that route can be detained to prevent accidents. An LCD display is also attached to indicate the status. This project in future can be enhanced by adding a feature of changing the stored phone number by the user as per his requirement. This can be achieved by interfacing an EEPROM along with a keypad to the microcontroller for storing the desired contact number.
CIRCUIT DIAGRAM :
Automatic Surveillance Camera Panning System from PC
ABSTRACT: The project is designed for using surveillance camera on a panning platform i.e. moving the camera, mounted on a DC motor in clockwise and anticlockwise direction in periodic intervals. For security reasons, surveillance cameras are used everywhere like roads, shops, colleges and offices. Surveillance cameras are basically stationary devices therefore 360 degree coverage is not possible. However, 270 degree coverage is possible if this proposed system is interfaced with the camera along with power to control the panning speed. One can follow a moving object. This system is interfaced with a PC where the input is given from keyboard using hyper terminal. The functionality of this circuit is, that once the PC sends a command to the microcontroller (of 8051 family) through level shifter IC (used to convert the voltage level from PC to that of the microcontroller), the microcontroller analyses this signal and activates the motor driver to drive it at the desired speed. The program on the microcontroller is executed based on the input signal from the PC to develop output to drive the motor through motor driver IC. Further this project can be enhanced by interfacing it to a tilt arrangement for up and down movement besides 270 degree pan movement. It can also be wirelessly controlled (using RF technology) to manually adjust the camera movement or the stop the panning movement if desired with a RF remote. NOTE: The project works only on operating systems having hyper terminal (E.g. Windows XP). The computer must have a RS232 serial port.
CIRCUIT DIAGRAM:
ARDUINO Based Home Automation
ABSTRACT: In present time there are many types of Home Automation Systems available in our market. Most of these are simple home appliances controlling systems like DTMF controlled home Appliances, IR Remote based home appliances controlling, RF based home appliances controlling. And here, we are going to discuss about GSMbased Home/Office Appliances Control (Home Automation System). This is a very common system, in which users can also use this system at farm house and house, offices for filling the water tanks. This system can also be used for start motor or Stop motor at defined time when water supply available. In this system Arduino is the heart of this system which takes control over whole the system process. Here a GSM module is used for sending and receiving the message. A 16×2 liquid crystal LCD for displaying the appliances status and process like SYSTEM READY, TV ON, light 1 ON, light 1 OFF, light 2 ON, light 2 OFF etc. Here AC load is used for demonstration. Three home/office appliances are used for demonstration. In which one zero watt bulb indicated by light 1 and second is 100 watt bulb indicated by light 2 and third and last is TV/LCD indicated by TV. In system has an additional function in which you will get the notification or status message on message sending number. Means if you sends message for ON OFF any electrical appliance by any mobile number then you will get status or notification message on the same mobile number.
BLOCK DIAGRAM:
Arduino Based Underground Cable Fault Detection
ABSTRACT: The objective of this project is to determine the distance of underground cable fault from base station in kilometers USING AN Arduino board. The underground cable system is a common practice followed in many urban areas. While a fault occurs for some reason, at that time the repairing process related to that particular cable is difficult due to not knowing the exact location of the cable fault. The proposed system is to find the exact location of the fault. The project uses the standard concept of Ohms law i.e., when a low DC voltage is applied at the feeder end through a series resistor (Cable lines), then current would vary depending upon the location of fault in the cable. In case there is a short circuit (Line to Ground), the voltage across series resistors changes accordingly, which is then fed to inbuilt ADC of Arduino board to develop precise digital data for display in kilometers. The project is assembled with a set of resistors representing cable length in KM’s and fault creation is made by a set of switches at every known KM to cross check the accuracy of the same. The fault occurring at a particular distance and the respective phase is displayed on a LCD interfaced to the Arduino board. Further this project can be enhanced by using capacitor in an ac circuit to measure the impedance which can even locate the open circuited cable, unlike the short circuited fault only using resistors in DC circuit as followed in the above proposed project.
BLOCK DIAGRAM:
Auto mute for car audio deck / audio system while talking on mobile phone
ABSTARCT: Muting car’s audio deck, while talking on cell phone is an important yet difficult task. This project is designed to solve the problem. A sensitive IR transmitter and receiver pair is designed and fixed to a cell phone holder. Always the cell phone should be placed in the holder. The transmitter unit continuously transmits IR rays. These IR rays are interrupted by the cell phone. Whenever the cell phone is lifted from the holder, the IR rays fall on the receiver and it sends a signal to switching circuit. A relay is driven by a relay driver circuit and the relay opens the deck speaker wires and the audio will be muted. After the completion of the conservation, the cell phone should be kept back in the holder. Again the IR rays will be interrupted and the relay will be de-energized. Music will be played again normally. This project uses regulated 12V, 750mA power supply. 7812 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/18V step down transformer.
CIRCUIT DIAGRAM:
Head Movement controlled car driving system to assist the physically challenged
ABSTRACT: Now-a-days transportation has become great difficulty to the individual to reach the destination on time, every one are having their own vehicle. And the people with all body parts are fortunate but when it comes to physically challenged people it’s very unfortunate that the people with partially disabled with hands can’t drive vehicle with the help of steering. In the Buses or Trains they are provided with minimum reservation and which will be very disappointing and they also don’t dare to buy a vehicle and assist with a driver which will cost a lot .So this project will be a great solution for them. The person who is driving car will be equipped with a device which is placed around the neck of the person who is driving the car which is helpful to move the steering forward and reverse direction without any physical or mental stress .The project uses 2 geared motors of 60RPM to drive the prototype of car. Also this car can take sharp turnings towards left and right directions. This project uses BCM2835 as its controller. We are also using four switches in the circuit which will be ON when the person will move neck forward and backward. The Raspberry Pi is a credit-card-sized single-board computer developed in the UK by the Raspberry Pi Foundation . The Raspberry Pi has a Broadcom BCM2835 system on a chip which includes an ARM1176JZF 700 MHz processor Video Core IV GPU and was originally shipped with 256 megabytes of RAM, later Upgraded to 512 MB. It does not include a built-inhard disk or solid-state drive, but Uses an SD card for booting and long-term storage. This project uses 12V Lead Acid battery which drives two DC motors with the help of H-Bridge Circuit.
BLOCK DIAGRAM :
Wireless Music transmission and reception by IR communication
ABSTRACT :
By using this project audio musical notes can be generated and heard up to a distance of 10 meters. The circuit can be divided into two parts: IR music transmitter and receiver. The IR music transmitter works off a 9V battery, while the IR music receiver works off regulated 9V to 12V. The transmitter uses popular melody generator IC UM66 that can continuously generate musical tones. The output of this music melody generator is fed to the IR driver stage to get the maximum range. An LED is connected in the Transmitter section. This LED flickers according to the musical tones generated by UM66 IC, indicating modulation. Two IR LEDs are connected in series. For maximum sound transmission these should be oriented towards IR phototransistor L14F1. The IR music receiver uses popular op-amp IC μA741 and audio-frequency amplifier IC LM386 along with phototransistor L14F1 and some discrete components. The melody generated by IC UM66 is transmitted through IR LEDs, received by phototransistor and fed to pin 2 of IC μA741. Its gain can be varied using potentiometer VR1. The output of IC μA741 is fed to IC LM386 via capacitor C5 and potentiometer. The melody produced is heard through the receiver’s loudspeaker. Potentiometer VR2 is used to control the volume of loudspeaker (8-ohm, 1W). Switching off the power supply stops melody generation. This project uses regulated 9V, 750mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/18V step down transformer.
BLOCK DIAGRAM:
Incoming Phone Ring Flasher
ABSTRACT:
The main objective of this project is to provide aflash lightas an indication of the incoming phone ring. This system is quiteuseful in some places(companies, factories or offices), whereinit isvery difficult to hear the incoming phone call ringsdue to large acoustic noise. The proposed system uses anopto-isolator and a rectified-powersupply.The land phone is connected to the circuit with the help of anopto-isolator. The opto-isolator is used for combining the isolating devices. The load is controlled by the relay, which is connected to the circuit. Theopto-isolator is used in the circuit to drive the relay by detectingthe incoming phone-callring; afterwards, it flashes the light as an alert of the incoming call to the user. This concept can be extended in future and implemented in the real-time scenario.
BLOCK DIAGRAM:
Display of Dialled Telephone Numbers on Seven Segment Display
ABSTRACT : The main objective of this project is to display the dialed telephone number on seven segment display for better visibility. This project is based on the concept of DTMF (dual tone multi frequency). Every button on the key pad of a telephone generates a unique frequency when pressed. These frequencies are decoded by a DTMF decoder and the digital signals are fed to the microcontroller through buffer circuits. While the program is executed, the output of the microcontroller delivers the same data to parallel connected seven segment displays. The parallel connected seven segment displays operate in the multiplexing mode fed from the microcontroller through driving switches to generate exact display of the numbers dialed. In actual operation only one seven segment display interfaced shows the number at any given time out of the ten used. Owing to persistence of vision, all the numbers appear glowing at the same time as they are in high speed multiplexing mode. The project uses an 8051 family microcontroller, and a cell phone duly connected from its ear phone socket to the DTMF decoder for receiving the data. This data is transmitted to the microcontroller for processing. The processed data is then given to the parallel connected seven segment displays. Further the project can be enhanced to displaying the time, cost, day and date parameters on the digital display.
BLOCK DIAGRAM:
Two-way Wireless Data Messaging System for Rural Areas using Zigbee Technology
Microcontroller: AT89S52
Power Supply: +5V, 500mA Regulated Power Supply
Transmitter Display: LED 5mm, 16 X 2 LCD
Receiver Display: LED 5mm, 16 X 2 LCD
Input Source: Key Pad
Crystal: 11.0592MHz
Communication Device: Zigbee Module
Applications: Wireless Communication
ABSTRACT:
In this project, the data can be transmitted to and received from remote ZigBee communication device. Data Security is primary concern for every communication system. There are many ways to provide security data that is being communicated. However, what if the security is assured irrespective of the hackers are from the noise. This Project describes a design of effective security for data communication by designing standard algorithm for encryption and decryption. Zigbee is a PAN technology based on the IEEE 802.15.4 standard. Unlike Bluetooth or wireless USB devices, ZigBee devices have the ability to form a mesh network between nodes. Meshing is a type of daisy chaining from one device to another. This technique allows the short range of an individual node to be expanded and multiplied, covering a much larger area. The source information is generated by a key pad and this will be encrypted and is sent to destination through Zigbee modules. The receiving system will check the data and decrypt according to a specific algorithm and displays on the LCD. This project uses regulated 5V, 500mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12V step down transformer.
ZigBee based wireless remote weather station monitoring system
ABSTRACT:
In an industry during certain hazards is will be very difficult to monitor the parameter through wires and analog devices such as transducers. To overcome this problem we use wireless device to monitor the parameters so that we can take certain steps even in worst case. Few years back the use of wireless device was very less, but due the rapid development is technology now a days we use maximum of our data transfer through wireless like Wi-Fi, Bluetooth, Wi Max,etc. The fundamental aim of this project is to develop an embedded systemto design a wireless weather monitoring system which enables to monitor the weather parameter in an industry or anywhere by using Zigbee technology and display the parameter on the PC’s screen using visual basic. The system contains two parts. One is transmitter node and another one is receiver part and both can be any number. The transmitter part consists of whether sensors, microcontroller and ZigBee and the receiver part consist of a PC interfaced with Zigbee through PC serial port. In this project we deal with monitoring the weather related parameters through wireless Zigbee modules. Here we monitor temperature, wind speed, wind direction and humidity with the help of respective sensors. The data from the sensors are collected by the micro controller and transmitted to the receiver section through wireless medium. All the parameters are viewed by the pc using visual basic program in the receiver side. In view of all this things, the design of wireless parameter progress helps in an industry to monitor the parameter in real time with the use of zigbee, is an easy installation platform, cost effective method for the low bit rate transmission, so with the help of the ready zigbee platform by using the embedded c language we interface the module with the pc by the help of visual basic we monitor the parameters in the system. . The main use of this module helps in an industry during the worst cases as the analog device may be damaged may be during the fire accidents, etc. But with the wireless transmission we have not have an accurate data but when compared to the analog failure the errors are very minimum so we use wireless to monitor the parameter in an industry where their no means of human interface to monitor the parameters. In this project we deal to monitor the parameter through wireless by using zigbee ready platform which is based on the IEEE 802.15.4, 2.4 GHz, in this module we use MSP 430 for the voltage and other technical parameters, which has in build RAM in it. The working of this module is simple in principle, the changes in certain place is monitor in real time process which is very accurate in monitoring and their no other interface and other disturbance in monitoring the parameter in this project we monitor temperature and humidity with the help of respective sensors. The change in the room temperature, humidity can be monitored like real time as the change is displayed in respective interval in the visual basic screen. In this project we are using AT89S52 microcontroller. We interface the microcontroller with zigbee module to monitor the weather station from the remote area. This project uses power supply i.e regulated 5V for modules and microcontroller. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer.
TRANSMITTER SECTION
RECEIVER SECTION:
Project Center Tirunelveli 