Raspberry Pi Project – Ultrasonic Distance Sensor in Civil Engineering (original) (raw)
Related papers
Development of distance measurement using ultrasonic based sensors
International Journal of Engineering Research Updates, 2024
Distance had been measured in previous years using the manual method, basically using measuring tape. Though there are several ways to estimate distance to a particular point without physical contact of the obstacle. One way is the use ultrasonic sensors, operating at 40 kHz, which is a wireless based. Ultrasonic transducers which consist of an ultrasonic transmitter and ultrasonic receiver were implemented in this work to transmit ultrasonic signals and receive the reflected signal and calculate the time it takes for a sound pulse to reach and reflect from the desired obstruction, as the reflected echo. This device calculates the distance from the transmitter to the obstacle using the speed of sound (340m/s) at 25°C-39 0 C ambient temperature and display on a liquid crystal display (LCD) screen. Using it, we can measure distance up to 60 meters. In this work, the ultrasonic transmitter unit is excited with a 40 kHz pulse burst and expects an echo from the object or obstacle which is the intended point, whose distance we want to measure. Ultrasonic sensor measurement is among the least expensive solutions available. In this paper measurement of distance to an obstacle by using a ultrasonic transmitter and receiver and an arduino board were presented.
There are several ways to measure distance without contact. One way is to use ultrasonic waves at 40 kHz for distance measurement. Ultrasonic transducers measure the amount of time taken for a pulse of sound to travel to a particular surface and return as the reflected echo. This circuit calculates the distance based on the speed of sound at 25°C ambient temperature and shows it on LCD display. Using it, we can measure distance up to 2.5 meters. In this circuit, a 40 kHz transducer is used for measurement in the air medium. In this project, we excite the ultrasonic transmitter unit with a 40 kHz pulse burst and expect an echo from the object whose distance we want to measure. It travels to the object in the air and the echo signal is picked up by another ultrasonic transducer unit (receiver), also a 40 kHz pre-tuned unit.
The project details the implementation of distance measurement system using the ultrasonic waves. As the human ear's audible perception range is 20 Hz to 20 kHz, it is insensitive to ultrasonic waves, and hence the ultrasound waves can be used for applications in industries/vehicles without hindering human activity. They are widely used as range meters and proximity detectors in industries also it can be used in parking assistance system. The distance can be measured using pulse echo and phase measurement method. Here the pulse echo method is used. The measurement unit uses a continuous signal in the transmission frequency range of ultrasonic transducers. The signal is transmitted by an ultrasonic transducer, reflected by an obstacle and received by another transducer where the signal is detected. The time delay of the transmitted and the received signal corresponds to the distance between the system and the obstacle.
Distance Sensing with Ultrasonic Sensor and Arduino
A sensor is a device that converts one type of energy to another. Arduino is a small microcontroller board with a USB plug to connect to the computer. The Arduino board senses the environment by receiving input from a variety of sensors and can affect its surroundings by controlling lcds, speakers, motors and GS module. Ultrasonic Sensor measure the distance of target objects or materials through the air using " non-contact " technology. They measure distance without damage and are easy to use. The output Signals received by the sensor are in the analog form, and output is digitally formatted and processed by microcontroller. In present work, it is used to detecting an obstacle, along with its exact distance. The internal analog to digital converter is used is calibrated to get almost accurate distance measurement. The measured distance is also displayed on an LCD screen. I. Introduction Bats are wonderful creatures. Blind from the eyes but the vision is sharper than humans, Ultrasonic ranging is the technique used by bats. Ultrasonic sensor provides an easy way in distance measurement. The sensor is perfect for distance measurements between moving or stationary objects. Ultrasonic Sensor measure the distance of the objects in air through non-contact technique. They measure distance without damage and are easy to use and reliable. These distance measurement sensors connect with all common types of automation and telemetry equipment. Machinery and processes in a wide range of industries use distance measurement sensors where size or position feedback is required. Distance measurement sensors are used to control or indicate the position of objects and materials. Distance measurement sensors can determine the dimensions of objects such as height, width and diameter, using one or more sensors. The echo time response of ultrasonic sensor detector is based on time of travel after trigger pulse to the surrounding objects is non-linear and depends on the reflectance characteristics of the object surface. Ultra Sonic sensors are widely used for distance measurement purposes. They offer low cost and a precision of less than 1 cm in distance measurements of up to 6m [1, 4]. However, the most popular method used in these measurements is based on the time of flight (ToF) measurement. This ToF is the time elapsed between the emission and subsequent arrival after reflection of an Ultrasonic pulse train travelling at the speed of sound. This causes large response times for a single measurement.
Distance Measuring by Ultrasonic Sensor
IFAC-PapersOnLine, 2016
This presentation deals with the verification of the accuracy of measurement distance ultrasonic sensor in the current environment. As a measuring sensor was chosen SFR08 type equipped by an I 2 C communication interface which allows addressing. This fact makes it simple to create the sensor array. Control and also visualization system was PC based. As communication card was used NI USB 8451. The goal of verification measurements was to determine the actual sensor accuracy especially when measuring longer distances. When evaluating the accuracy of the sensor was not included in temperature compensation of the measured data.
Ultrasonic Ranging and Detecting Using Arduino and Processing
International Journal of Scientific Research in Computer Science, Engineering and Information Technology, 2017
RADAR is an object detection system which uses radio waves to determine the range, altitude, direction, or speed of objects. The radar dish or antenna transmits pulses of radio waves or microwaves which bounce off any object in their path. Arduino is a single-board microcontroller to make using electronics in multidisciplinary projects more accessible. This project aims at making an ULTRASONIC RADAR that is efficient, cheaper and reflects all the possible techniques that a radar consists of.
Distance Measurement via Using of Ultrasonic Sensor
Paper deals with ultrasonic sensors used for distance measurement. Selected ultrasonic sensor has been tested and results of experiments are shown in the paper. Uncertainty analysis also has been realized.
Distance Measurement of an Object by using Ultrasonic Sensors with Arduino and GSM Module
Distance measurement of an object in the path of a person, equipment, or a vehicle, stationary or moving is used in a large number of applications such as robotic movement control, vehicle control, blind man's walking stick, medical applications, etc. Measurement using ultrasonic sensors is one of the cheapest among various options. In this paper distance measurement of an obstacle by using separate ultrasonic transmitter, receiver and a microcontroller is presented. The experimental setup and results are described and explained.
Distance measurement using Ultrasonic sensors
Cars and vehicles have been incorporated into culture as one of the most resourceful, easiest and accessible means of transportation available. But besides being a suitable and common means, it is equally an incredibly dangerous mode of transport. Thousands of people die in vehicle accidents each year, whether it is accident with another vehicle or with a motionless object. A method of early accident exposure and evasion can control several accidents that may be associated to factors such as loss of control, careless driving, tired/intoxicated drivers, and not paying concentration to the road. As the current market does not present a normal safety feature in any car, the use of sensory tools to sense potentially hazardous objects a definite distance away and either slows the car down or shove to a safer path has not been released. In this research paper a new technique is introduced for safety against accidents. Eight ultrasonic sensors are used to sense different types of objects. By implementing a possible improvement in safety/sanctuary systems in vehicles, the vehicle and sensor would be able to operate normally until the sensor detects possible risk. In our project, the sensor does not give output or signal until the car comes within ~75 feet of an object, at which timer sends information of hurdle to driver. The sensor only indicates the presence of an object; it is up to the user or driver to tackle the hurdle.
Ultrasonic distance measurement and system simulation
GEORGIAN SCIENTISTS, 2024
The article explores the operational principles of a microprocessor distance meter constructed using an ultrasonic sensor module. The schematic model of the level measurement system was developed using the computer simulation program Proteus, facilitating an analysis of the information exchange process. The refined device incorporates calibration and statistical processing of measured information, contributing to the reduction of static errors and minimizing errors induced by random factors.