Design of a New Low Cost ROV Vehicle

2014 ◽  
Vol 69 (7) ◽  
Author(s):  
Yasser M. Ahmed ◽  
Omar Yaakob ◽  
Bong K. Sun
Keyword(s):  
Fiber Optic ◽  
Low Cost ◽  
Research Work ◽  
Underwater Vehicles ◽  
Commercial Grade ◽  
Site Search ◽  
Battery Power ◽  
Offshore Industry ◽  
A Site ◽  
Network Camera

Remotely operated underwater vehicles which are also known as ROVs are a type of underwater robot vehicle which is widely used in the offshore industry or other applications. The main purpose of this type of tethered underwater mobile robots are tosupersede human to work at hard-to-access or jeopardizing underwater region to do certain specific tasks like to survey a site, search for an item or person that has tremendous value. The remote control of ROV is usually carried out through copper or fiber optic cables which are known as umbilical cables.  In this research work a low cost ROV unit has been designed and constructed at UniversitiTeknologi Malaysia (UTM). The ROV was constructed by low cost material like commercial grade polyvinyl chloride (PVC) pipes. The low cost ROV is equipped with a network camera and manoeuvred by three motors through 12 volts battery power supply. The ROV is controlled by joystick controller through network cable and is able to submerge up to 20meters intowater to perform underwater observation operation.

Description and performance of a highly versatile, low‐cost fiber‐optic confocal Raman microscope

1996 ◽  
Vol 67 (1) ◽  
pp. 79-84 ◽  
Author(s):  
C. M. Stellman ◽  
K. S. Booksh ◽  
J. E. Reddic ◽  
M. L. Myrick
Keyword(s):  
Fiber Optic ◽  
Low Cost ◽  
Confocal Raman ◽  
And Performance

Progress in low cost interferometric fiber optic gyros

1992 ◽  
Author(s):  
James N. Blake ◽  
Bogdan Szafraniec ◽  
John R. Feth ◽  
K. Diamond
Keyword(s):  
Fiber Optic ◽  
Low Cost

scholarly journals A low-cost, human-like, high-resolution, tactile sensor based on optical fibers and an image sensor

2018 ◽  
Vol 15 (4) ◽  
pp. 172988141878363 ◽  
Author(s):  
Utku Büyükşahin ◽  
Ahmet Kırlı
Keyword(s):  
High Resolution ◽  
Spatial Resolution ◽  
Fiber Optic ◽  
Low Cost ◽  
Experimental Studies ◽  
Main Idea ◽  
Tactile Sensor ◽  
Image Sensor ◽  
Sensor Design ◽  
Tactile Sensors

Tactile sensors are commonly a coordinated group of receptors forming a matrix array meant to measure force or pressure similar to the human skin. Optic-based tactile sensors are flexible, sensitive, and fast; however, the human fingertip’s spatial resolution, which can be regarded as the desired spatial resolution, still could not be reached because of their bulky nature. This article proposes a novel and patented optic-based tactile sensor design, in which fiber optic cables are used to increase the number of sensory receptors per square centimeter. The proposed human-like high-resolution tactile sensor design is based on simple optics and image processing techniques, and it enables high spatial resolution and easy data acquisition at low cost. This design proposes using the change in the intesity of the light occured due to the deformation on contact/measurement surface. The main idea is using fiber optic cables as the afferents of the human physiology which can have 9 µm diameters for both delivering and receiving light beams. The variation of the light intensity enters sequent mathematical models as the input, then, the displacement, the force, and the pressure data are evaluated as the outputs. A prototype tactile sensor is manufactured with 1-mm spatial and 0.61-kPa pressure measurement resolution with 0–15.6 N/cm2 at 30 Hz sampling frequency. Experimental studies with different scenarios are conducted to demonstrate how this state-of-the-art design worked and to evaluate its performance. The overall accuracy of the first prototype, based on different scenarios, is calculated as 93%. This performance is regarded as promising for further developments and applications such as grasp control or haptics.

scholarly journals A High-Frequency Sound based PGC Demodulation Scheme for Fiber Optics Hydrophone

2021 ◽  
Author(s):  
Yunjie Shi ◽  
Mengke Yin ◽  
Zijue Zhu ◽  
Shun Wang ◽  
Panting Niu ◽  
...  
Keyword(s):  
Fiber Optics ◽  
Sound Source ◽  
Acoustic Signal ◽  
High Frequency ◽  
Fiber Optic ◽  
Low Cost ◽  
Research Field ◽  
Interference Signal ◽  
High Frequency Sound ◽  
Frequency Sound

Abstract In the research field of fiber-optic hydrophone, the performance of demodulation scheme is crucial. In this work, a phase-generated-carrier (PGC) demodulation scheme based on high-frequency sound source is proposed. Highfrequency acoustic signal from the external sound source is applied to the fiber-optic hydrophone to achieve phase modulation of the interference signal instead of the piezo-electrical transducer (PZT) or frequency-modulated laser. It possesses the merits of low system complexity and low cost. Through the acoustic detection experiment, we achieve demodulation of acoustic signal at frequency varying from 300 Hz to 800 Hz, and the signal-to-noise ratio (SNR) is higher than 45 dB. Furthermore, the proposed scheme is successfully applied to time division multiplexing (TDM) experiment.

scholarly journals Fiber-optic Synchronization and Data Transmission Subsystem of Multichannel Phased Array

2020 ◽  
Vol 23 (3) ◽  
pp. 7-12
Author(s):  
Y. A. Svetlichniy ◽  
Keyword(s):  
Data Transmission ◽  
Phased Array ◽  
Fiber Optic ◽  
Low Cost ◽  
Digital Data ◽  
Processor Core ◽  
Analog Signals ◽  
Distribution Scheme ◽  
Optical Analog ◽  
Data Transferring

The article deals with the practical aspects of synchronization and data transferring in multichannel phased array systems, especially in systems with big antenna dimensions. In multichannel passed array antenna commonly used an optical analog signals distribution scheme for RF and heterodyne signals and wired interfaces for control and digital data. For modern digital antennas the data transferring and synchronization method, based on digital fiber optic channels, was presented. The schemes, constructions, and algorithms of the method are described. The method was realized as SDR system using FPGA with soft-processor core. For data transferring the 8b/10b code is used. The following result of experiment are discussed: digital optical lines are resistant to signals distortions, can transfer big data massive with minimal delay, have excellent synchronization capabilities at quite low cost.

scholarly journals Sistema de Iluminação Publica Inteligente

2020 ◽  
Author(s):  
Fábio Rodrigues de la Rocha
Keyword(s):  
Quality Of Life ◽  
Smart Cities ◽  
Low Cost ◽  
Research Work ◽  
Sustainable Growth ◽  
Street Lighting ◽  
Rational Use

Public street lighting management is a well known problemwhich can be revisited from the perspective of Smart Cities.In Smart Cities there is an interconnection of services andinfrastructure to provide sustainable growth and improvementsin citizens’ quality of life. In this research work, weexplore new low cost technologies to create a smart streetlight system capable of monitoring and controlling the lamps,thus reducing the costs with maintenance and allowing amore rational use of electricity.

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