Bidirectional Visitor Counter Using 8051 Microcontroller

Electronics Project Kits For Students Click HereELECTRONICS HUB P R O J E C T S | T U T O R I A L S  HOME » FREE PROJECT CIRCUITS » EMBEDDED » 8051 MICROCONTROLLER » BIDIRECTIONAL VISITOR COUNTER USING 8051 MICROCONTROLLER Bidirectional Visitor Counter using 8051 Microcontroller AUGUST 29, 2017 BY ADMINISTRATOR — 40 COMMENTS Contents [hide] 1 Construction and Output Video 2 Bidirectional Visitor Counter Circuit Principle 3 Circuit Diagram of Bidirectional Visitor Counter 4 Circuit Components 5 Circuit Design of Bidirectional Visitor Counter using 8051 Microcontroller 6 How to Operate Bidirectional Visitor Counter Circuit? 7 DOWNLOAD CODE 8 Applications of Bidirectional Visitor Counter Circuit 8.1 Limitations of this Circuit 9 Related Articles This article describes the design and working of a Bidirectional Visitor Counter using 8051 Microcontroller. The main intention is to design a system wherein the number of persons entering or leaving a room is kept track of and displayed on a screen. When a person enters the room, count would be increased, whereas on leaving, the count would decrease. IR sensing mechanism is used to sense the presence of visitors and the whole counting operation is done by a microcontroller. But, before going to know about this circuit, get an idea about How to interface a 16 x 2 LCD Display to 8051 Microcontroller as we are going to use this concept in this project. Construction and Output Video Bidirectional Visitor Counter Circuit Principle The circuit works on the principle of IR sensing. Infrared or simply IR Sensors are devices that work with Infrared Light Source and a Photo Detector like a Photo Diode or a Photo Transistor that act as a Transmitter and Receiver respectively. In this project, we have used an IR LED as the IR Transmitter and a Photo Diode as the IR Receiver. Two sets of IR sensors consisting of an IR LED and Photo Diode are placed at two ends of the entrance of a room. Output from each sensor is fed to the microcontroller. In normal operation, IR light from the LED would not fall on the Photo Diode as it is a Reflective type IR Sensor. The output from the sensor would be a logic LOW signal in this case. In case of any interruption (due to any person crossing the path), the Photo Diode would start receiving the IR Light and start conducting. As a result, the output from the sensor would be a logic HIGH signal. The transition from low to high, for each sensor pair is detected by the microcontroller and accordingly the count would be increased or decreased. “ Do you know how to Measure Frequency using Frequency Counter? Circuit Diagram of Bidirectional Visitor Counter 0592 MHz Crystal 2 x 33pF Ceramic Capacitors 16 x 2 LCD Display 10KΩ Potentiometer 2 x IR Sensors (Reflective Type) Connecting Wires Power Supply Keil µVision Software Willar Software Proteus NOTE: A detailed circuit of the IR Sensors (Reflective Type) is mentioned in the Circuit Design section. “ Related Post – 2 Digit Up/Down Counter Circuit Working and Applications .Circuit Components Here is the list of components and their corresponding values used in this circuit. AT89C51 (8051 based Microcontroller) 8051 Programmer Push Button 10µF Electrolytic Capacitor 2 x 10KΩ Resistors (1/4 Watt) 11. . . Photo Diode and 10KΩ Resistor form a potential divider and the output is given to the non – inverting input of the Operational Amplifier (Op – Amp). The following image shows the circuit diagram of the Reflective Type IR Sensor Module used in this project. Photo Diode is connected in reverse bias with a series resistor of 10KΩ. A 16 x 2 LCD Display is used to display the count values. A 10KΩ POT is connected at the inverting input. which is an 8051 family microcontroller.0 and P2. The sensor circuit is designed by selecting appropriate value of resistors for both the LED and the Photo Diode. The microcontroller AT89C51 is interfaced to the IR sensor pairs at PORT2 pins – P2.Circuit Design of Bidirectional Visitor Counter using 8051 Microcontroller The heart of the circuit design lies in designing the Microcontroller interface. This POT can be adjust in order to change the sensitivity of the IR Sensor. The data . Here. A 150Ω current limiting resistor is placed in series with the IR LED. we used the Microcontroller AT89C51.1 respectively. GND and P3.e. In other words.0 and P2. A 10KΩ POT is connected to contrast adjust pin i. In the meantime. the output of the IR sensors is LOW.line of the LCD are connected to PORT1 Pins of the Microcontroller. a logic HIGH level is received.0592 MHz quartz crystal and two ceramic capacitors – each 33pF.0.0 and P2. it assumes that the person is leaving the room and as per the program.e.6. the Photo Diode starts conducting and the output of the sensor becomes HIGH. As a result. The oscillator circuit is designed by selecting an 11. Pin 3 of LCD. As per the program. first on the P2. Now when a transition takes place.1 are at logic HIGH level. ports P2. If there is a person in front of the IR Sensors. the microcontroller sees this as an interruption to sense the passage or entry of a person or an object in front of the IR LED and the Photo Diode.7 pins. As a result.2V.0 and then at P2. When the system is powered ON. RS. It then scans the input pins (P2.e. the light from the IR LED would not fall on the Photo Diode of the first sensor pair and hence.0 and P2. Another important aspect of the design involves designing the oscillator circuit and the reset circuit. The reset circuit is designed by selecting a resistor of 10KΩ and an electrolyte capacitor of 10µF to ensure a reset pulse width of 100ms and reset pin voltage drop of 1. If the microcontroller senses logic HIGH. IR light from the IR LED reflects from the person and falls on the Photo Diode. when there is no object in front of the IR Sensors.1. the microcontroller initially initializes the stack pointer and all other variables. the ports P2. the count value is increased and this value is displayed on the 16 x 2 LCD Display.This course includes Code Circuit Diagram Working Detailed Explanation of Each component in circuit Software Installation How to Operate Bidirectional Visitor Counter Circuit? Let us now see hoe this Bidiractional Visitor Counter using 8051 Microcontroller actually works.1 are at logic LOW level. Buy Detailed Course of Bidirectional Visitor Counter using 8051 Microcontroller @ Just 399/. The Control Pins i. first at port P2.1 and then on P2. . the Photo Diode doesn’t conduct.1). RW and E are tied to P3. the microcontroller decreases the count as displays the same on the LCD. In other words. i. The Bidirectional Visitor Counter using 8051 Microcontroller circuit can be used domestically to get an indication of number of persons entering a party 2. Related Articles Contactless Digital 5 Channel IR Remote Motion Detector Circuit Random Number Tachometer using Control System using Generator using 8051 8051 Microcontroller Microcontroller Celsius Scale Bipolar LED Driver Water Level Controller Digital Voltmeter using Thermometer using Circuit using 8051 8051 Microcontroller AT89C51 and LM35 Microcontroller . It is a low range circuit and cannot be implemented at large areas. 3.The program ensures that the count is increased or decreased only when both the sensors detect the person. “ Note: Read the post – Mini Projects for more engineering project circuits. DOWNLOAD CODE Applications of Bidirectional Visitor Counter Circuit 1. 2. after a certain time the output may look confusing. 4. It can be used at official meetings. It can also be used as home automation system to ensure energy saving by switching on the loads and fans only when needed. Limitations of this Circuit 1. It can be used at homes and other places to keep a check on the number of persons entering a secured place. With frequent change in the count value. 2016 AT 1:33 AM which 7 segment display used in this project? is this common anode or common cathode?? Reply Anusha says FEBRUARY 12. ELECTRONICS. EMBEDDED. 2016 AT 1:04 AM it very simple and very useful to us -thank you Reply snehalata kanire says FEBRUARY 11. MINI PROJECTS Comments Administrator says JUNE 14. FREE PROJECT CIRCUITS. the value of vcc is 5v. Reply aishwarya says JANUARY 7. 2014 AT 10:03 AM Here.FILED UNDER: 8051 MICROCONTROLLER. 2016 AT 1:22 AM It is common cathode display . 2016 AT 4:28 PM nice work guys Reply aman says MARCH 13. 2016 AT 6:30 AM what abt the code for this device? Reply . Reply Shivanand rohinkar says MARCH 17.. 2016 AT 3:28 AM Yes it will work but the values given to 7 segment must be changed in code. Reply Anusha says FEBRUARY 29. 2016 AT 6:43 AM If we use common anode does it works …. Reply Pooja says FEBRUARY 25. 2016 AT 7:27 AM can you give me the code of this circuit Reply vincent says MARCH 8. 2016 AT 7:23 AM can you provide me the program for this circuit Reply Shivanand rohinkar says MARCH 17. 2016 AT 6:38 AM what about the code? Reply manju says MARCH 14. 2016 AT 5:27 AM is it the pratically constructable circuit or a rough one Reply Shiv says MARCH 17. 2016 AT 9:43 AM Wer is the code Reply . aman says MARCH 13. 2016 AT 6:34 AM what about the code for this device? Reply aman says MARCH 13. 2016 AT 7:25 AM can you give me the code of this circuit Reply Sandesh says MARCH 22. will it work? Reply Anusha says MARCH 28. 2016 AT 9:41 AM Which programmer we can use to code AT89c51? Reply .will it work? Reply Gaurang says MARCH 30. 2016 AT 4:25 AM plz send code Reply NIHAL RANJAN says MARCH 23. NIHAL RANJAN says MARCH 23. 2016 AT 1:14 AM if i use two single 7 segment common cathode displace in place of 2-Digit 7 segment common cathode display. 2016 AT 1:11 AM if i use two single digit 7 segment common cathode display in place of 2-Digit 7 segment common cathode display. 2016 AT 8:55 AM yess it will work Reply bhushan patil says MARCH 31. 2016 AT 8:38 AM Plz give code Reply . 2016 AT 4:25 AM please give the program of bidirectional visitor counter using 8051 bincybabu2013@gmail. 2016 AT 4:30 AM please give the program of bidirectional visitor counter using 8051 microcontroller Reply BincyBabu says APRIL 5. 2016 AT 4:24 AM plz send program code Reply Bincy Babu says APRIL 5. 2016 AT 9:08 AM please give the program for bidirectional visitor counter using 8051 Reply om says APRIL 18. 2016 AT 8:19 AM Whare its coding Reply om says APRIL 18.com Reply Bincy Babu says APRIL 5. bhushan patil says MARCH 31. 2016 AT 4:13 AM can you provide software code???? Reply . 2016 AT 2:05 AM where is the code can somebody give me ?? Reply amani diope says APRIL 24. 2016 AT 2:27 AM plz can anyone suggest program using 8051 microcontroller for bidirectional visitor counter Reply tayyaba says MAY 27. 2016 AT 11:37 PM could you please provide the code of this ?? Reply satish Jadhav says JUNE 15. 2016 AT 5:34 AM please i need circuit of noise reduction Reply avinash says APRIL 28. Sybil Sarah says APRIL 21. 2017 AT 5:13 AM Please send me code Reply pooja says APRIL 30. 2016 AT 12:24 AM Which code is used in this project for common cathode 7 segment display? Reply rahim says JULY 30. 2017 AT 5:38 AM Can I get the code for this circuit? Reply Krushndevsinh says FEBRUARY 27.com Reply shrnn says JULY 31. Rahul says JULY 16. 2016 AT 8:52 PM Please send me the code rkorbo@gmail. 2016 AT 11:27 AM pls send me the code for this circuit Reply Prajakta says FEBRUARY 26. 2017 AT 3:32 AM can you provide the code for this project Reply . org/p/bidirectional-visitor-counter-using-8051 Reply Amin says JUNE 26.Please learn everything about this project from this link http://courseshttp://www. can i get the code every parts of this project.http://courses. 2017 AT 5:29 AM Go to this link for code and complete information of the Project. Anusha says JULY 5. 2017 AT 5:28 AM Hi.electronicshub. I can assure of proving every bit worthy of it. Required fields are marked * Comment Name * ..electronicshub. 2017 AT 8:44 PM Sir. I am interest this project for my thesis design project.org/p/bidirectional-visitor-counter-using- 8051…. i will give my best to present this project to my school… Reply Anusha says JULY 5.electronicshub... 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