See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/341914439 Online presentation: Organic Smartphone Sensors Presentation · June 2020 DOI: 10.13140/RG.2.2.32857.34400 CITATIONS READS 0 20 3 authors , including: Mohammed A. Fadhel Bahaa Hussein TAHER Ghrabat University of Sumer University of Sumer 42 PUBLICATIONS 82 CITATIONS 11 PUBLICATIONS 7 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: Sickle cell anemia; Diagnosis and Classification View project Real Time View project All content following this page was uploaded by Mohammed A. Fadhel on 04 June 2020. The user has requested enhancement of the downloaded file.
رموس ةعماج تامولعملا ايجولونكت و بوساحلا مولع ةيلك Online presentation Organic Smartphone Sensors Free conference call: Online meeting ID: sumeruniv سيمخلا :4\6\2020 ًاءاسم ةعساتلا ةعاسلا
Outline Organic Smartphone Sensors ❑ Introduction ❑ Type of Organic sensors ❑ Advantage and Disadvantage Gesture ❑ Common Multi-T ouch Gesture ❑ Advantage and Disadvantage 2
Introduction Sensors What is sensor? • A device which provides a usable output in response to a specified measure. Input Signal Output Signal Sensor A sensor acquires a physical parameter and converts it into a signal suitable for processing (e.g. optical, electrical, mechanical) 3
Types of Sensor inside Smartphone • Accelerometer : detect screen orientation, movements • Gyroscope : game controls • Magnetometer : detects the strength and direction of a magnetic field • Proximity sensor : detect objects nearby • Light sensor • Barometer & Thermometer Sensor • Heart rate monitor sensors • Fingerprint sensors etc.. 4
Organic Sensors An Organic Sensor is an analytical device, used for the detection of an analytic, that combines a biological component with a physicochemical detector like fingerprint and heart beat sensors. 5
What is a fingerprint? A fingerprint in its narrow sense is an impression left by the friction ridges of a human finger. Fingerprints are easily deposited on suitable surfaces (such as glass or metal or polished stone) by the natural secretions of sweat from the eccrine glands that are present in epidermal ridges. نكميعضوتامصبعباصلؤاةلوهسبىلعحطسأةبسانم ( لثمجاجزلا وأندعملاوأرجحلالوقصملا ) نعقيرطتازارفلئاةيعيبطلاقرعلل نمددغنيركيلئاةدوجوملايفللبتلاةرشبلا . راشيواهيلإاًنايحأمساب " تارمروهظلاةريغتملا ". 6
Smart phone fingerprint sensors features • The fingerprint sensors built into a number of smartphones, including the iPhone 7s, the Samsung Galaxy S7, and the HTC One Max. Of these, the 7s has the sensor most convenient to use as it does not require swiping in order to read fingerprint data. • Fingerprint scanners are most often used as an extra layer of security – as a substitute for a lock screen password. 7
What is a Heartbeat Sensor? The Science behind it ? that it uses your phone ’ s camera instead of a separate heart rate sensor. As your heart beats, the capillaries تاريعشلاةيومدلا in your fingers contract and dilate causing a change in the way they reflect light. The process is called Photoplethysmography (PPG).It is a simple and low-cost optical technique that can be used to detect blood volume changes in the microvascular bed of tissue. 8
Heartbeat Sensor • How it works in phones? If you shine a bright light like, say, your phone ’ s LED flash, on your index, its thin skin becomes slightly transparent making the capillaries and their pulsing detectable. Now if you have a camera nearby, you can take a video of your finger and use a smart algorithm to distinguish the pulses and hence calculate the heart rate. 9
Heartbeat Sensor • How accurate is this? Very accurate. In my own comparisons against manual heart rate measurement, a heart rate chest belt, and a Blood Pressure monitor that also displays the heart rate. 10
Why used Organic smart phone sensors? 1. It avoids a lot of wiring. 2. It can accommodate new devices at any time. 3. It's flexible to go through physical partitions. 4. It can be accessed through a centralized monitor. 5. Sensors networks allow a system to be extended from one with basic functions to one that can receive and act on data about the environment it operates in. 6. Sensors such as PIR (Passive Infrared Sensor) detectors are relatively cheap if using wired versions. 11
Disadvantage of organic smart phone sensors 1. A sensor that you wouldn't expect to find on a Smartphone is one capable of detecting harmful radiation . Yet there's a phone that sports one – the Sharp Pantone 5. Released only in Japan, it features a dedicated button which launches an app used to measure the current radiation level in the area. 2. It as we cant control propagation of waves 3. Comparatively low speed of communication 12
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Gesture • Gesture recognition enables humans to interface with the machine and interact naturally without any mechanical devices. • Using the Concept of Gesture Reorganization. It is possible to point a finger at the smart-phone screen so that the cursor wills move accordingly. • Gesture recognition can be conducted with techniques from computer vision and image processing 14
Common Multi-Touch Gesture 15
Why used the gesture? a) Replace Keypad of phone b) Pointing Gesture c) Navigate in a virtual environment d) Pick up and manipulate virtual object e) Interact with the 3D world f) No physical contact with computer g) Communicate at distance h) No training is required i) Simple fast, and easy to implement. Can be applied on real system and play 16 game
Disadvantage of Gesture a) Irrelevant object might overlap with the hand. Wrong object extraction appeared if the object large than the hand. b) Performance recognition algorithm decreases when the distance is greater than 1.5 meters between the user and the camera. c) System limitation restrictions restrict the applications such as the arm must be vertical, the palm is facing the camera and the finger colour must be basic colour such as either red or green or blue. d) Ambient light affects the colour detection threshold. 17
12:38 Android Platform Architecture Android is an open source, Linux-based software stack created for a wide array of devices and form factors. The following diagram shows the major components of the Android platform. 18
Hardware Abstraction Layer (HAL) • The hardware abstraction layer (HAL) provides standard interfaces that expose device hardware capabilities to the higher-level Java API framework. • The HAL consists of multiple library modules, each of which implements an interface for a specific type of hardware components, such as the camera or Bluetooth module. When a framework API makes a call to access device hardware, the Android system loads the library module for that hardware component. 19
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Cocoa Touch Layer Cocoa Touch is a UI framework for building software programs to run on iOS for the iPhone from Apple Inc. Cocoa Touch provides object-oriented access for managing your address book and events, building games, and dealing with ads, maps, messages, social media, and sensors . Most of the time, you should work through Cocoa Touch; because it provides seem less access to the other layers of the technology. 21
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