Essays about: "optical distance sensor"

Showing result 1 - 5 of 13 essays containing the words optical distance sensor.

  1. 1. Investigation and evaluation of optical distance sensors

    University essay from Uppsala universitet/Signaler och system

    Author : Olof Wigzell; [2022]
    Keywords : optics; radiometry; senssor; microcontroller; irradiance; circuit design; calibration; validation;

    Abstract : Optical sensors are among the sensors that are often used for distance measurements. An optical distance sensor is basically made of a light emitter (Tx) such as a light emitting diode (LED), a light receiver (Rx) such as a photosensitive transistor, and a circuit supporting the operation of the Tx and Rx. READ MORE

  3. 2. Using Optical Flow to provide robustness for animage sensor based multiangulation positioning system

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Fredrik Anderson; [2022]
    Keywords : ;

    Abstract : The use of image sensors in positioning systems has increased significantly the last years, spanning from complex SLAM-systems to simpler triangulation based methods. In the latter case, occlusion of anchor points may render the triangulation unsolvable, and any practical implementation must address this problem. READ MORE

  4. 3. Development of a tool to analyze back-focus characteristics of fix-focal cameras

    University essay from Lunds universitet/Innovation

    Author : Björn Lind; [2022]
    Keywords : Technology and Engineering;

    Abstract : Fix-focal cameras require careful alignment of the sensor relative to the lens during assembly in order to produce a sharp image. Axis developed wide- and fish-eye network cameras are, for a number of reasons, focused at infinity when aligned. READ MORE

  5. 4. Comparison of Tunnel Convergence Measurement Methods

    University essay from KTH/Fastigheter och byggande

    Author : Olof Erlandsson; [2020]
    Keywords : tunnel; convergence; displacement; tilt; sensor; tunnel; konvergens; förskjutning; tilt; sensor;

    Abstract : When creating cavities below ground, movements occur in the surrounding soil due to disrupted equilibrium. In tunnel constructions these displacements are referred to as tunnel convergence. This report compares four dierent methods for monitoring tunnel convergence with regards to both measurement precision and method cost. READ MORE

  6. 5. Stress-free titanium-based thin films for inner ear microphones : The last missing part of a technology for totally implantable hearing aid implants

    University essay from Linköpings universitet/Tunnfilmsfysik

    Author : Dina Ehsan; [2020]
    Keywords : Stress-free; thin films; in situ; titanium; compressive; tensile;

    Abstract : An implantable hearing aid device is being developed by a project group which is part of an EU initiative. This device contains a diaphragm consisting of a submicron thick freestanding titanium film, which should be free of internal stresses. READ MORE