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In fishing industry, underwater equipment normally perform with the use of internal combustion engine. However all gas bottle containers used for engine, must be directly taken out of the factory and transported to the places they are installed. This is a very time consuming and manpower consuming process. In this study, a new type of transportation container, which can dump underwater equipment automatically and directly into the sea and also retain the water level, will be introduced. Its container, which is constructed with internal mechanism, consists of three small tanks and a reservoir tank. Each tank is designed as a single compartment and has the capacity of about 900 l gas bottle. The container is designed to be free floating and equipped with propeller. When temperature changes, container automatically takes good ventilation and is operated only by engine because it is always connected to the electrical generator. The working of this container in marine environment is studied in detail in this research.
This paper examines the use of fiber optic laser thermocouples as distance sensors in confined spaces. They are well-suited for use in arbitrarily confined, but bounded, linear spaces because they are non-contact and they operate without requiring the use of special light sensors or algorithms.A number of laser distance measurement techniques have been developed, but all have limitations that make them less than ideal for many applications. Lasers are a perfect choice for distance measurement, but this capability is restricted by the paraxial (beam divergence) and diffraction (beam shaping) properties of the optical beam. These two phenomena limit the distance to the target that can be measured by the laser approach. The use of a single laser in this arrangement is usually not sufficient to measure distances to places that are a hundred meters away. Thus, a combination of beam divergence and the use of multiple beams and/or multiple lasers is necessary. By using lasers and a scanning technique, the problems associated with the divergence of the beam and the paraxial criterium can be overcome. The use of a Mohr’s circle, square law, or cylindrical law is required to calculate the distance to the object. The technique used here is a combination of fiber optic laser thermocouples and a scanning technique. A setup with 4 lasers and more than 200 thermocouples, which were used to determine distances to the walls of a confined space, was developed and tested. d2c66b5586