Ultrasonic Rangefinder Using 8051

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 » ULTRASONIC RANGEFINDER USING 8051 Ultrasonic Rangefinder using 8051 AUGUST 13, 2017 BY ADMINISTRATOR — 53 COMMENTS Contents [hide] 1 Output Video 2 Principle of Ultrasonic Rangefinder 3 Circuit Diagram of Ultrasonic Rangefinder using 8051 4 Components Required for Ultrasonic Rangefinder 5 Circuit Design of Ultrasonic Rangefinder 6 How Ultrasonic Rangefinder using 8051 Circuit works? 6.1 Download Project Code 7 Algorithm for Program 8 How to Operate? 9 Ultrasonic Rangefinder Project Applications 9.1 Limitations of the Circuit 10 Related Articles In this project, we have built an Ultrasonic Rangefinder using 8051 Microcontroller and Ultrasonic Sensor. We have different ways to measure the distance. One way is to use Ultra Sonic Sensor or Module for distance measurement. This article explains you how to measure the distance using 8051 microcontroller. This Ultrasonic Range Finder system measures the distance up to 4 meters with an accuracy of 3 mm. Output Video Principle of Ultrasonic Rangefinder Generally, the distance can be measured using pulse echo and phase measurement method. Here, the distance can be measured using pulse echo method. The ultrasonic module transmits a signal to the object, then receives echo signal from the object and produces output signal whose time period is proportional to the distance of the object. The mechanism of the ultra sonic sensor is similar to the RADAR (Radio Detection and Ranging). RADAR Concept This circuit calculates the distance of the object based on the speed of the sound wave at normal temperature and displays the distance on LCD. “ Also Get an Idea about How to Interface 16×2 LCD with 8051 Microcontroller Circuit Diagram of Ultrasonic Rangefinder using 8051 Buy Step by step Guide along with Code: Ultrasonic Range Finder Using 8051 Microcontroller» Components Required for Ultrasonic Rangefinder AT89C51 Microcontroller 8051 Programming board Programming cable HC – SR04 Ultrasonic Module 16 x 2 LCD 10KΩ Potentiometer 10µF / 16V Electrolytic Capacitor 2 x 10KΩ Resistor (1/4 Watt) 0592 MHz Crystal 2 x 33pF Capacitors Push Button Connecting wires Power Supply Keil µVision Software Proteus Willar Software . . Circuit Design of Ultrasonic Rangefinder . When the module receives reflected signal from the object. Ultrasonic Module (Ultrasonic Sensor) HC – SR04 Ultrasonic Module works on the principle of SONAR and is designed to measure the range of the object in small embedded projects. RW and EN are connected to the P3. Distance in centimeters = (Time/58) Object distance in inches = (Time/148) Distance can also be calculated using speed of the ultrasonic wave 340m/s . The time taken by the signal to leave and return to the sensor is used to find out the range of the object. Trigg: The trigger signal is applied to this pin for starting the transmission.1 and P3. the ultrasonic module transmits 8 consecutive pulses of 40 KHz. Features 1. Power supply pins of the microcontroller. It offers excellent range detection with high accuracy and stable readings. When a valid trigger signal is applied. GND: This pin is connected to the ground. module generates the signal whose time period is proportional to distance. the LCD (Liquid Crystal Display) is used to display distance of the object. 3. Angle measurement is 30 degrees 4.The major components in this project are AT89C51 Microcontroller. GND and P3.6. LCD and Ultrasonic Sensor are connected to the 5V DC. “ Related Post: Non Contact Digital Tachometer Circuit Design using 8051 Microcontroller How Ultrasonic Rangefinder using 8051 Circuit works? When HIGH pulse of 10µs is applied to the TRIG pin. after transmitting 8th pulse the ECHO pin of the sensor becomes HIGH. Here. Trigger input pulse width is 10µs 5.2 pins respectively. the ECHO pin becomes LOW. it generates 8 pulses of 40 KHz. 10KΩ POT is used to vary the contrast of the LCD. Ultrasonic Sensor and LCD Display. This signal must be HIGH for 10µs.7 respectively. 4. Echo: At this pin. Frequency 40 KHz Pin Configuration 1. The TRIGGER and ECHO pins of the Ultrasonic Sensor are connected to the P3. The operation of the module is not affected by the sunlight or black material. 2. LCD data pins are connected to the PORT1 of the microcontroller and controller pins RS. Vcc: This pin is connected to the positive 5V DC. Required current 15mA 6. Resolution of this module is 3mm 2. Ranging distance is 2cm to 400cm (4 meters) 3. When 8thpulse is transmitted echo pin becomes HIGH. The speed of the ultrasonic pulse is nothing but the speed of sound which is 340. Range = 17015 * TIMER0 X 10 -6 7. while (INT0 == 1). Initially burn the program to the microcontroller 2. How to Operate? 1. TIMER0 value is equal to the time taken by the signal to go forward and comeback so we need to take only half time.1 = 0. when input INT0 goes LOW and timer counts the time while (INT0 == 0). Distance = speed * time = 34029 * (TIMER0) / 2 6. P3. Send HIGH pulse for 10 micro seconds on TRIG pin Initially P3. Time required = TIMER0 VALUE/2 4. Target range = TIMER0/58 cm. Wait until the module transmits 40 KHz pulses. 3. At 11. TIMER0 gets incremented for 1µs. 2. Download Project Code Algorithm for Program 1.0592 MHz. delay_ms (10). Now give the connections as per the circuit diagram 3. TIMER0 starts counting.29 m/s or 34029 cm/s 5. While giving the connections make sure that Vcc of ultrasonic module is connected to . P3.1 = 1.1 = 0. This system used in automotive parking sensors and obstacle warning systems. Place the obstacle in front the ultrasonic module. Related Articles LC Meter Circuit using Water Level Controller Interfacing 7 Segment Interfacing GPS with 555 Timer using 8051 Display to 8051 8051 Microcontroller Microcontroller 5 Channel IR Remote Interfacing 16×2 LCD Digital Voltmeter using Random Number Control System using with 8051 8051 Microcontroller Generator using 8051 Microcontroller . Limitations of the Circuit This system is not able to measure longer distances. Used in terrain monitoring robots. Switch off the board supply. 5V DC 4. Switch on the board supply 5. 6. Ultrasonic Rangefinder Project Applications Used to measure the obstacle distance. now you can observe the distance on LCD. EMBEDDED. 2014 AT 7:26 AM NICE CONCEPT Reply disha says SEPTEMBER 18. MINI PROJECTS Comments MARIMUTHU. 2016 AT 9:01 AM download libraries for both .FILED UNDER: 8051 MICROCONTROLLER. and place it in library folder!! Reply XSUYOG says FEBRUARY 11. 2014 AT 2:13 PM how can we overcome the limitation of ultrasonic range finder? Reply DD says OCTOBER 10. 2014 AT 8:56 PM HC SR04 and AT89s51 are not available on proteus…plz tell me how to get these parts??????? Reply Rishabh says JANUARY 26. ELECTRONICS. 2016 AT 1:40 PM you have to get files from google to your proteus’s LIBRARY folder Reply .V says JULY 23. FREE PROJECT CIRCUITS. can you send me the code by email? Reply Nikhil Shetty says NOVEMBER 30. my project is about to detect hazard in long distance for a smart car. Reply kelly says NOVEMBER 29. 2015 AT 8:27 AM U can connect any 2 switch because this sensor is 2 bit sensor so u can use switch for protious Reply m. thank you Nikhil Shetty . engine says NOVEMBER 9. 2015 AT 6:11 PM i want to build one help me. 2014 AT 1:33 PM i cant find the sensor module in the proteus library please help Reply Rajdeep says DECEMBER 29.mahdi says NOVEMBER 14. 2015 AT 9:55 AM i need this project code to create different project but still using the same concept as yours. 2015 AT 12:43 PM Need a project code im trying to make a similar one for my hobby so please share project code to my id is also fine.. 2016 AT 6:42 AM Code is uploaded Long back. ^_^ Reply Anusha says JANUARY 2.Reply MASOOM AHMED says DECEMBER 1. 2015 AT 2:50 AM I am an electronic engineer and electronic hobbyist . 2015 AT 12:20 AM 1. And besides.. Because our project required us to use two microcontroller boards with some other different components.I want to make same project . and I want to go ahead of others in learning and understanding this course. 2. Reply Ojakgyo says DECEMBER 3. I hope you can consider our reasons and help us for our project. Why you need this project code? Because i wanna take your coding as a reference to our viva in our university. because so far.Please check the article Reply Bigg Ben says DECEMBER 15. send me source code. we’ve only been taught about LED Blink. We are required to use an embedded c programming for our project.. and I am taking a course this semester called Embedded Systems. my microcontroller board are different type from yours.Are you trying to make the same project or different one? No.Give us more details about your project. My project required us to make a smart system in a vehicle with using two or more microcontroller boards. 3. and I also want to make a project like . so I would need this code to practice more and to try to understand this better. 2015 AT 2:25 AM I am a Computer Engineering student. .. i am designing similar kind of project bt in different application. 2016 AT 3:31 AM 1. will really appreciate the help. For educational purposes. 2016 AT 1:20 AM I want to do this project using PIC. kindly help. 2. please send me the code.this.for reference i need this project code. 2015 AT 12:35 AM i want the software for this project can u please send it to me Reply Rashmi says JANUARY 24. 3.! Reply Aseem Raj says JANUARY 24. 2016 AT 4:50 AM I need to make a ultrasonic distance finder project for my third year engineering mini project. Thanks Reply siva sai says DECEMBER 17. Reply chaitanya gangadhar says JANUARY 28. Reply . please email the code. but in PIC18F microcontrollers. i am using this concept in vehicles to prevent accidents.So please can you help me with the project code? Thanks In Advance. 2016 AT 2:33 PM Plz sir .. I am a 4th year Electronics & Communication engineering student and making this project for my ‘Final Year Major Project’. 2016 AT 4:38 AM hi.Hurry send code on my mail. Reply basavaraj says FEBRUARY 2. 2016 AT 12:14 AM I need the code for this project ‘Ultrasonic Range FInder’. I am interested to make this project .I am making the same project for exploring my skill. Reply Abhijeet Singh says FEBRUARY 20. Thank u for giving such amazing knowlege about this project. i want to do this as my mini project in engineering. 2. Thank you once again. Reply Ashutosh kumar says FEBRUARY 19.. plz send the code… Reply Ashutosh kumar says FEBRUARY 17.and I also required code for this one. My email is – abhi. We are trying the exact same project. 2016 AT 2:24 AM Sir .com Thanks Reply . 2016 AT 3:48 AM 1. Tanvi Kinkhabwala says JANUARY 28. I need the code for the college project.sgh11593@gmail. suggest me ………….. Anusha says FEBRUARY 23. ……. 2016 AT 2:36 AM Yess you can use both interrupts… Reply . ……… Reply Admin says MARCH 1. 2016 AT 4:26 AM hi just i want to make an obstacle follower robo using two ultrasonic sensor with 89s52 and 16×2 lcd…… can i use both interrupt pin at atime for both ultrasonic sensor (one for left and other for right …. please requests you to send m code Reply Anusha says FEBRUARY 23.Please go through the article completely Reply Somnath says FEBRUARY 21...using ur code already i run which work fine ……. 2016 AT 3:36 AM Code is already uploaded in the article.)pls. 2016 AT 3:41 AM Download code from the same post Reply tk says FEBRUARY 28. 2016 AT 4:06 AM Very good. you can simply download it. This is what i am intended to do for my academic project.. 2016 AT 2:20 AM After completing all the connections and turning on the power supply the lcd display only shows “Range finder” and it does not show the distance ………..?? Please help. 2016 AT 3:43 AM I am btech student.. Reply Admin says MARCH 2. Reply sanu says FEBRUARY 29. 2016 AT 5:10 AM Check the sensor….. 2016 AT 4:54 AM Code is present in the article itself. 2016 AT 4:09 AM Very nice I want the code please Reply Sanjay says FEBRUARY 24.. Somnath says FEBRUARY 21. .I want the code as m working on same project. 2016 AT 3:10 AM I am trying ultrasonic sensor based distance meter.what could be the problem. Reply Anusha says MARCH 2.. Reply senthil arumugam Mani says FEBRUARY 29. Also i will display the distance in LCD. 2016 AT 12:07 AM Kindly send us the programming code. what software for this project? urgent. not able to get the code Reply sauabh joshi says APRIL 2. 2016 AT 1:17 PM hello. 2016 AT 9:54 AM HC SR04 library for AT89s51 are not available on proteus…plz tell me from where can i download these parts Reply abubakar says JUNE 18. ty Reply . Reply lavanya says MARCH 15. 2016 AT 1:26 AM how many counts are required in timer0 to show a range of 1cm? Reply osm says APRIL 2. 2016 AT 6:31 AM softwares needed for this projects plz tell me!!! Reply ronaldo says APRIL 19. Reply varsha says JULY 17. 2017 AT 1:30 AM Hi. .??????????????????????????? Reply Anusha says JUNE 30.please show how to construct it Reply durgesh says JULY 29. 2016 AT 9:09 AM I am interesting to construct this project. i want to recognize the shape and size of the object detected by the utlrasonic sensor. 2016 AT 12:49 PM What I can do for distance to be more than 4m ? Reply anjali jadhav says MARCH 20. varsha says JULY 17.. Reply AMAL says JULY 19. Yes. 2016 AT 6:17 AM please help me to write a code of my project different from this but related to it . Try to build the circuit with a physical module. 2016 AT 6:12 AM will u please help me for the code of my other project just related to ultrasonic sensor and microcontroller actually i want recoznize shape and size of object detected by ultrasonic sensor. 2017 AT 11:42 PM hc-sr04 sensor is not available in proteus then wht should i do…. We do not have a Proteus library for Ultrasonic Sensor. The Ultrasonic Sensor has a Test Pin . 2017 AT 9:29 AM hi guys . There is nothing as Test Pin. 2017 AT 1:30 AM Hi.What should I do with that?Please i need a reply ASAP Reply Anusha says JUNE 30. 2017 AT 5:46 PM Hello everyone. Reply Shaurabh says MARCH 26. There are usually 4 pins on HC-SR04 Ultrasonic Sensor (VCC. You should probably go with a laser type speed gun design. Ultrasonic Sensor wouldn’t be useful in your case. 2017 AT 1:30 AM Hi. Reply Vinith says APRIL 12. Trigger and Echo). 2017 AT 6:49 PM I want to make a speed checker and overspeed detector but there are some problems like how to sense 2 vehicles running side by side and differentiate between them and another problem is how to read the speed of all the vehicles passing through the fixed points Reply Anusha says JUNE 30. Can you provide a link to the particular module you are using? Reply mushahid hussain says MAY 24. GND. ?? Reply Aniruddha Modak says AUGUST 4. 2017 AT 11:41 PM If I Buy This @399 From Your Site…. will it work? Reply bhavik solanki says JULY 26. 2017 AT 7:31 AM can this hex file be used with other 8051 based controller like p89v51rd2 from nxp. I’m interfacing HC-SR04 sensor with lpc2148 microcontroller & checked the above 8051 code for reference.?? Reply Leave a Reply Your email address will not be published. but the o/p I’m getting as 0 cm on lcd… The operating voltage of lpc2148 controller is 3. Required fields are marked * Comment .3v. 2017 AT 3:30 AM Hi. instead of 5v. I have connected to same voltage only. Do I Get a Components For The Same Or Just a Online Guide.. Is there anyone to send me a code for(r Range finder by using at89c51 ) in assembly language Reply Akash says JULY 12. please check your internet connection and reload.Name * Email * Website reCAPTCHA Please upgrade to a supported browser to get a reCAPTCHA challenge. Why is this happening to me? POST COMMENT Search this website … . Alternatively if you think you are getting this page in error. 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