MICROCONTROLLER BASED INDUSTRIAL SECURITY SYSTEM

SUBMITTED BY: Basudeba Mandal Alok Mohanty Rakesh Kumar Sahoo Soumya Ranjan Pattnaik Amaresh Kumar Tripathy Satyam Roy

INTRODUCTION INTRODUCTION The security system is one of the major focus areas in the present social and industrial environment. To safe guard the industrial area, the most important aspect to be considered is the trespassing, fire and flood. There are various traditional security systems that already exists but the recent systems with embedded systems are more flexible.

This security system is quite efficient and can be implemented in industries, offices and homes. This project deals with six sensors:  Trespassing.  Vibration Detector.  Over temperature detector.  Water Detector.  Over Current.  Over Voltage.

BLOCK DIAGRAM OF THE PROJECT

POWER SUPPLY CIRCUIT POWER SUPPLY CIRCUIT

TRESPASSING SENSOR TRESPASSING SENSOR This system consists of two sections:  IR Transmitter  IR Receiver IR LED is a light source which emits a signal in the range of Infrared region. The receiver in the opposite end receives the signal and reports violation in case any hindrance comes in between. IR source is used as it is invisible in contrast with the laser source.

Receiver and Transmitter Block Diagram

VIBRATION DETECTOR VIBRATION DETECTOR Here for the earthquake or any other vibration due to any disturbance of the machines, we have taken a vibration sensor which is nothing but a piezoelectric sensor which detects the vibration which occurs due to machines. Piezoelectric sensor is nothing but a transducer which converts mechanical vibration or mechanical stress into an electrical signal and that signal is very weak, for that we need an amplifier to amplify the weak signal which is done by the inverting amplifier.

BLOCK DIAGRAM OF VIBRATION SENSOR

OVER TEMPERATURE DETECTOR In this section our aim is to detect over temperature, for that we need a temperature sensor (THERMISTOR) which is a N.T.C type for sensing the temperature. Thermister is a transducer which is used to convert temperature to the corresponding voltage. To compare the temperature we need an OP- AMP which is configured as an voltage comparator (LM393) which compares the two input voltage and gives the corresponding output according to the temperature.

WATER DETECTOR WATER DETECTOR In our project, the water level detector it will indicate the level of the water but at the same time it will ON/OFF the motor. Whenever the water level goes above the upper level of the tank, the motor will automatically stops and it will indicate the level of the water with a audible sound. Similarly, when ever the water level goes below the lower level of the tank, the motor will automatically ON and it will indicate the level of the water.

BLOCK DIAGRAM OF WATER LEVEL DETECTOR

OVER CURRENT DETECTOR OVER CURRENT DETECTOR This is a circuit designed to detect over current with a special type of CT is used to detect very low current. The output of this CT is an AC voltage proportional to the load current. In this CT the primary coil is one turn and secondary is 200turn. If the load varies, the CT output also varies in accordance with the load current.

BLOCK DIAGRAM BLOCK DIAGRAM

OVER VOLTAGE SENSOR OVER VOLTAGE SENSOR In this section our aim is to detect the line varying voltage. The DC voltage after the rectifier is approximately V m due to the charging of the capacitor, this capacitor voltage represents the line voltage. The time constant of the circuit is defined by C*R L which must be more then five times of the time period of the signal. RC>5T. If the RC value is less the 5T then the sample voltage fluctuates unnecessarily, if the RC value is too high the sampling response becomes too slow.

BLOCK DIAGRAM OF OVER VOLTAGE DETECTOR

FUTURE ASPECTS AND CONCLUSION This project can be further expanded to be interfaced to LAN and Internet. This system can be interfaced to the Internet so, that the security aspect can be observed and warned through the internet access. This project has functioned satisfactorily in the laboratory condition and with slight modification can be made suitable to work in outdoor conditions.

REFERENCES REFERENCES [1]. White, M. H, Deffoe, L. E. and Furlani, K. M., “Industrial security norms and findings” Proc., 4th ASCE Specialty Conference and Exposition/ Demonstration on Robotics for Challenging Situations and Environments, pp , Albuquerque, New Mexico, Feb. 27 – Mar. 2,2000. [2]. Stewart, D., “A Platform with complete industrial security,” Proc. of the Inst. of Electronics Engineering, Volume 180(15), Part I: , [3]. Albus, J. S., Bostelman, R. V., Dagalakis, N. G., “Sensor working and its principles”, Journal of Electronics Systems, July 1992 [4]. Thomas, Y. J., Fithian, J. E., and Deisenroth, M. P., “A report on the Embedded System. (5) 1996.

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