When conductive material is present in the RF field, Eddy Currents flow in the surface of that material. Condition the RF signal to extract usable data using a demodulator circuit.Generate a radio frequency (RF) signal using an oscillator circuit.The Proximitor contains electronics that provide two functions: Proximity Transducer Systems provide an electrical signal that represents the distance between a conductive surface and the probe tip of the system. It is capable of both static (position) and dynamic (vibration) measurements, and is primarily used for vibration and position measurement applications on fluid-film bearing machines, as well as Keyphasor and speed measurement applications. To use it for Arduino projects you would need an ELEGOO UNO R3 controller board.Proximity Transducer System provides an output voltage directly proportional to the distance between the probe tip and the observed conductive surface. (The value is multiplied by 1/2 because T is the time for the go-and-return distance.)įor Arduino Project with Ultrasonic SensorĮlegoo Ultrasonic Sensor HC-SR04 is inexpensive and easy to use since we will be using a Library specifically designed for this sensor, which can be downloaded from. The distance can be calculated with the following formula: Distance L = 1/2 × T × C where L is the distance, T is the time between the emission and reception, and C is the sonic speed. Ultrasonic Sensors measure the distance to the target by measuring the time between the emission and reception. The sensor head emits an ultrasonic wave and receives the wave reflected back from the target. The modules include ultrasonic transmitters, receivers, and control circuits.Īs the name indicates, ultrasonic sensors measure distance by using ultrasonic waves. HC-SR04 provides 2cm-400cm non-contact measurement function, the ranging accuracy can reach to 3mm. Ultrasonic Sensor HC-SR04 is great for all kinds of projects that need distance measurements, avoiding obstacles as examples. By recording the elapsed time between the sound wave being generated and the sound wave bouncing back, it is possible to calculate the distance between the sonar sensor and the object. It measures distance by sending out a sound wave at a specific frequency and listening for that sound wave to bounce back. Package Content: 5pcs HC-SR04 with a little giftĮLEGOO HC-SR04 Ultrasonic Sensor is a device that can measure the distance to an object by using sound waves.Power supply: 5V DC quiescent current: less than 2mA effectual angle: less than 15° distance: 2cm500cm resolution: 0.

When triggered it sends out a series of 40KHz ultrasonic pulses and receives echo from an object. HC-SR04 consists of an ultrasonic transmitter, receiver, and a control circuit.Ultrasonic HC-SR04 distance measuring transducer sensor.

Ultrasonic proximity circuit