Room Switch Light Control Using Visitor Counter free essay sample

Branch of Electronics and correspondence Engineering MINI PROJECT REPORT 2011 CERTIFICATE Certified that this venture report â€Å"AUTOMATIC ROOM LIGHT CONTROLLER WITH BIDIRECTIONAL VISITOR COUNTER† is the real work of ? SHILPA VINOD† who completed the undertaking work under my watch. Leader OF THE DEPARTMENT SUPERVISOR INTERNAL EXAMINER EXTERNAL EXAMINER 4 Acknowledgment Before we get into the main part of things, we present our wholehearted commendations, with higher respects and warm gratitude to every last one, who were the bone behind the ligaments of this undertaking. We give all greatness and respect to Almighty God whose endowments and help made this undertaking a triumph. We wish to communicate our earnest gratitude to our Principal, Dr. C. E. Krishnan, for giving a chance to attempt this task. We thusly recognize our earnest gratitude to Prof. Arumuga Samy, our H. O. D. for his significant comments and management in finishing this task work effectively. Likewise we might want to communicate our limitless thanks and appreciation to Mr. Deepak P. , Mr. Mahesh P S, Mr. Vishnu, Lecturers in ECE Dept. for their significant direction and recommendations in the entire course of our scaled down undertaking movement. It would be out of line in the event that we don't make reference to the significant commitment and convenient co-activity reached out by staff individuals from our dept. We might want to thank our Institution without which this venture would have been a far off the real world. We likewise stretch out our ardent gratitude to our family and well wishers. Not the least, yet the most, we are appreciative to all the sixth semester understudies of this organization, our cherished allies for the motivation and the co-activity they have appeared at all degrees of our work. 5 ABSTRACT This Project ? Programmed Room Light Controller with Bidirectional Visitor Counter? s a dependable circuit that assumes control over the assignment of controlling the room lights too us tallying number of people/guests in the room precisely. At the point when someone goes into the room then the counter is increased by one and the light in the room will be turned ON and when any one leaves the room then the coun ter is decremented by one. The light will be just turned OFF until all the people in the room go out. The all out number of people inside the room is likewise shown on the seven portion shows. The microcontroller does the above activity. It gets the signs from the sensors, and this sign is worked heavily influenced by programming which is put away in ROM. Microcontroller AT89S52 consistently screen the Infrared Receivers. At the point when any item go through the IR Receivers then the IR Rays falling on the recipients are discouraged. This obstacle is detected by the Microcontroller. 6 TABLE OF CONTENTS CHAPTER NO. Cover sheet NO. Rundown OF FIGURES 1. Square Diagram of Circuit 2. Transmission Circuit 3. Recipient Circuit 10 13 15 19 20 22 23 24 25 35 4. Infrared Sensor 5. Square Diagram of TSOP 1738 6. Application Circuit 7. Clock IC (555) 8. LTS 542 (7-Segment Display) 9. LM7805 (Voltage Regulator) 10. Transfer Circuit 11. Stream Chart 12. Circuit Diagram in PCB 1. 2. Presentation BLOCK DIAGRAM DESCRIPTION 2. 1 Power Supply 2. 2 Enter and Exit Circuits 2. 3 89S52 Microcontroller 2. 4 Relay Driver Circuit 9 11 12 3. CIRCUIT DESCRIPTION 3. 1 Transmission Circuit 3. 2 Receiver circuit 13 15 7 4. 5. Rundown OF COMPONENTS DESCRIPTION OF THE COMPONENTS USED 5. 1 Microcontroller AT89S52 5. 2 TSOP1738 5. 3 555 (TIMER IC) 5. 4 LTS 542 5. 5 LM7805 5. 6 Relay Circuit 16 17 19 20 22 23 24 6. Stream CHART 25 7. PROGRAM 26 8. PCB FABRICATION 30 9. End 36 10. Book index 37 8 INTRODUCTION Project title is ? Programmed ROOM LIGHT CONTROLLER WITH BIDIRECTIONAL VISITOR COUNTER?. The target of this task is to make a controller based model to check number of people visiting specific room and likewise light up the room. Here we can utilize sensor and can know present number of people. In today’s world, there is a nonstop requirement for programmed apparatuses. With the expansion in way of life, there is a need to keep moving for creating circuits that would facilitate the unpredictability of life. Additionally if at all one needs to know the quantity of individuals present in room so as not to have blockage, this circuit ends up being useful. 9 BLOCK DIAGRAM ENTER SENSOR SIGNAL CONDITIONING EXIT SENSOR SIGNAL CONDITIONING A T 8 9 S 5 2 RELAY DRIVER LIGHT POWER SUPPLY 7-SEGMENT DISPLAY 10 BLOCK DIAGRAM DESCRIPTION The essential square chart of the bidirectional guest counter with programmed light controller is appeared in the above figure. Predominantly this square outline comprises of the accompanying basic squares. 1. Force Supply 2. Passage and Exit sensor circuit 3. AT89S52 small scale controller 4. Hand-off driver circuit 1. Force Supply:Here we utilized +12V and +5V dc power flexibly. The principle capacity of this square is to give the necessary measure of voltage to fundamental circuits. +12V is given to hand-off driver. To get the +5V dc power flexibly we have utilized here IC 7805, which gives the +5V dc managed power gracefully. 2. Enter and Exit Circuits:This is one of the principle part of our venture. The primary expectation of this square is to detect the individual. For detecting the individual we are utilizing a TSOP 1738 sensor. By utilizing this sensor and its related circuit outline we can tally the quantity of people. 11 3. 9S52 Microcontroller:It is a low-power, elite CMOS 8-piece microcontroller with 8KB of Flash Programmable and Erasable Read Only Memory (PEROM). The gadget is made utilizing Atmel’s high-thickness nonvolatile memory innovation and is perfect with the MCS-51TM guidance set and pin out. The on-chip Flash permits the program memory to be reinvented in-framework or by a regular nonvolatile memory software engineer. By consolidating an adaptable 8-piece CPU with Flash on a solid chip, the Atmel AT89S52 is an amazing Microcontroller, which gives a profoundly adaptable and financially savvy answer for some implanted control applications. . Hand-off Driver Circuit:This square can possibly drive the different controlled gadgets. In this square for the most part we are utilizing the transistor and the transfers. One transfer driver circuit we are utilizing to control the light. Yield signal from AT89S52 is given to the base of the transistor, which empowers the specific transfer, along these lines, suitable gadget is chosen and which plays out its designated work. 12 CIRCUIT DESCRIPTION There are two primary pieces of the circuits. 1. Transmission Circuit (Infrared LEDs) 2. Beneficiary Circuit (Sensors) 1. Transmission Circuit: 13 This circuit chart shows how a 555 clock IC, designed to work as a fundamental astable multivibrator. The astable multivibrator creates a square wave, the time of which is dictated by the circuit outer to IC 555. The astable multivibrator doesn't require any outside trigger to change the condition of the yield. Thus the name free running oscillator. The time during which the yield is either high or low is controlled by the two resistors and a capacitor which are remotely associated with the 555 clock. IR Transmission circuit is utilized to produce the tweaked 36 kHz IR signal. The IC555 in the transmitter side is to produce 36 kHz square wave. Change the preset in the transmitter to get a 38 kHz signal at the o/p. At that point you point it over the sensor and its o/p will go low when it detects the IR sign of 38 kHz. 14 2. Recipient Circuit: Fig. 3. 4 Receiver circuit The IR transmitter will discharge balanced 38 kHz IR signal and at the collector we use TSOP1738 (Infrared Sensor). The yield goes high when there is an interference and it return back to low after the timeframe dictated by the capacitor and resistor in the circuit I. e. around 1 second. CL100 is to trigger the IC555 which is arranged as monostable multivibrator. Info is given to the Port 1 of the microcontroller. Port 0 is utilized for the 7-Segment show reason. Port 2 is utilized for the Relay Turn On and Turn off Purpose. LTS 542 (Common Anode) is utilized for 7-Segment show and that time Relay will get voltage and activated, so light will get voltage and it will turn on and when counter will be 00 and around then Relay will be killed. Reset catch will reset the microcontroller 15 LIST OF COMPONENTS ? Microcontroller †AT89S52 ? IC †7805 ? Sensor †TSOP 1738 (Infrared Sensor) ? Transformer †12-0-12, 500 mA ? Preset †4. 7K ? Plate capacitor †104,33pF ? Reset button switch ? Rectifier diode †IN4148 ? Transistor †BC 547, 2N2222 ? 7-Segment Display 16 DESCRIPTION OF THE COMPONENTS USED 1. Microcontroller AT89S52: The AT89S52 is a low-power, elite CMOS 8-piece microcontroller with 8K bytes of in-framework programmable Flash memory. The gadget is produced utilizing Atmel’s high-thickness nonvolatile memory innovation and is perfect with the Industry-standard 80C51 guidance set and pin out. The on-chip Flash permits the program memory to be reconstructed insystem or by a customary nonvolatile memory ace sentence structure. By joining an adaptable 8-piece CPU with in-framework programmable Flash on a solid chip, the Atmel AT89S52 is a ground-breaking microcontroller which gives an exceptionally adaptable and savvy answer for some implanted control applications. The AT89S52 gives the accompanying standard highlights: 8K bytes of Flash, 256 bytes of RAM, 32 I/O lines, Watchdog clock, two information pointers, three 16-piece clock/counters, a six-vector two-level interfere with design, a full duplex sequential port, on-chip oscillator, and clock hardware. What's more, the AT89S52 is structured with static rationale for activity down to zero recurrence and supports two programming selectable force sparing modes. The Idle Mode stops the CPU while permitting the RAM, clock/counters, sequential port, and interfere with framework to keep working. The Power-down mode spares the RAM substance however freezes the oscillator, impairing all other chip capacities