Essays about: "Ultrasonic Microphone"

Found 4 essays containing the words Ultrasonic Microphone.

  1. 1. An Investigation of Methods for Flow Measurements in a Gasketed Plate Heat Exchanger for Predictive Maintenance

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Viktor Ekström; [2022]
    Keywords : gasketed plate heat exchanger; electrical measurements; sensors; predictive maintenance; machine learning; Technology and Engineering;

    Abstract : For a company to stay relevant in the long term, it is essential to keep up with the latest technology and continuously consider new innovative solutions for improving products and services. The gasketed plate heat exchanger (GPHE) is a mechanical device, and this work attempts to investigate different possibilities for incorporating sensor devices and predictive maintenance systems to improve the device. READ MORE

  3. 2. Investigation of Light and Ultrasound Injected Signals in Microphones

    University essay from Linköpings universitet/Elektroniska Kretsar och System

    Author : Robin Djerv; [2021]
    Keywords : LightCommands; DolphinAttack; MEMS Microphone; Signal Injection; Security;

    Abstract : Voice commanded systems (VCS) have been proved to be vulnerable to signal in- jections mimicking voice commands and explored security flaws in market avail- able products for the time of each respective study. Signal injection caused with the help of amplitude modulated ultrasonic waves (being known as DolphinAt- tacks - DA) were proved to work on several such devices in 2017. READ MORE

  4. 3. Raspberry Pi Based IoT System for Bats Detection at Wind Farms

    University essay from Blekinge Tekniska Högskola/Institutionen för matematik och naturvetenskap

    Author : Hemanth Surya Karuturi; Megha Sanjeev Reddy Karri; [2020]
    Keywords : Bats; Pattern Recognition; Ultrasonic Frequencies; Ultrasonic Microphone; Ultrasonic Transducer; Wind Turbines;

    Abstract : Context: Large numbers of bats are killed by collisions with wind turbines and there is at present no accepted method of reducing or preventing this mortality. We designed a system, which detects and records any bats’ activity in and around the surroundings of wind turbines. READ MORE

  5. 4. Sound following robot

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Karl Enoksson; Bohan Zhou; [2017]
    Keywords : ;

    Abstract : There are many different areas of use for sound localization. This concept is not only used to localize a person that is talking but can also be applied for finding a person in need One method of localizing the position of a sound source is to use several microphones to register the difference of time in which each microphone detects the same sound. READ MORE