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Ultrasonic sensors can detect the movement of targets and measure the distance to them in many automated factories and process plants. Sensors can have an on or off digital output for detecting the movement of objects, or an analog output proportional to distance. They can sense the edge of the material as part of a web guiding system.
Schematic view of a flow sensor. An ultrasonic flow meter is a type of flow meter that measures the velocity of a fluid with ultrasound to calculate volume flow. Using ultrasonic transducers, the flow meter can measure the average velocity along the path of an emitted beam of ultrasound, by averaging the difference in measured transit time between the pulses of ultrasound propagating into and ...
Capacitive micromachined ultrasonic transducers (CMUT) are a relatively new concept in the field of ultrasonic transducers. Most of the commercial ultrasonic transducers today are based on piezoelectricity. In CMUTs, the energy transduction is due to change in capacitance. CMUTs are constructed on silicon using micromachining techniques.
Sensors provide analogs to human senses and can monitor other phenomena for which humans lack explicit sensors. Simple Touch: Sensing an object's presence or absence. Complex Touch: Sensing an object's size, shape and/or hardness. Simple Force: Measuring force along a single axis. Complex Force: Measuring force along multiple axes.
An ultrasonic pulse velocity test is an in-situ, nondestructive test to check the quality of concrete and natural rocks. In this test, the strength and quality of concrete or rock is assessed by measuring the velocity of an ultrasonic pulse passing through a concrete structure or natural rock formation.
Noise in the measurement environment can have an effect on the measurement, so one should measure parameters in a quiet acoustic environment. The most common ( DIY -friendly) method before the advent of computer-controlled measurement techniques is the classic free air constant current method, described by Thiele in 1961.
A heart rate monitor (HRM) is a personal monitoring device that allows one to measure/display heart rate in real time or record the heart rate for later study. It is largely used to gather heart rate data while performing various types of physical exercise. Measuring electrical heart information is referred to as electrocardiography (ECG or EKG).
Oxygen sensors play a critical role in the production of Active Pharmaceutical Ingredients made in a bioreactor by cell culture or fermentation. Because oxygen is important in cellular respiration, the oxygen sensor provides a critical measurement to ensure that cells in the bioreactor are getting the oxygen needed to maximize production.