Conference papers (Engg)

Permanent URI for this collection

http://localhost:4000/handle/123456789/251

Browse

Browsing Conference papers (Engg) by Title

Now showing 1 - 19 of 19
  • Item
    Advances in elelctronics and measurments in fishery technological investigstions
    (CUSAT, Cochin (India), 1995) Sivadas, T.K.
    Fishery technology is a multidisciplinary subject warranting integrated approach for its development coordinating a variety of biological and technological disciplines. The complex and hostile nature of the environment where the fishing technological investigations are carried out further necessitates the evaluation of the operational features of the dynamic systems as well as estimation of the physical, chemical, biological and mateorological values of the sea related to fishery resources. The recent developments in microelectronics and space exploration have made revolutionary changes in acoustic fish detection methods, precise navigation, safety in the sea and satellite remote sensing techniques for fishery forecasting. The efforts made in CIFT show the scope and utility of a series of electronic instruments for monitoring the performance of fishing gears, fishing crafts, water quality and the marine environmental parameters. The instruments developed in CIFT using fully indigenous technology are aimed at to make scientific studies on the multidiscplinary nature of the marine environment in relation to the fishing efforts so as to achieve sustainable exploitation of the resources and self reliance in the technology. The paper gives an account of the recent advancements in electronics along with the specific contributions made indigenously.
  • Item
    Calibrations of hydro-acoustic instruments onboard FORV Sagar Sampada
    (FORV Sagar Sampada, (Department of Ocean Development, New Delhi), 1996) Natarajan, S.; Kasim, M.; Gopakumar, G.; Ravindranathan, V.; Ramakrishnan, A.
    Calibration is carried out to keep up the precition of the instrument by determinig their caliber. Calibration of hydro-acoustic equipment onboard FORV Sagar Sampada was carried out periodically and the performence record weree maintained. Deviation and the defficiencies were noted down for applying correction while interpriting the output of the instruments.
  • Item
    Conservation of energy in fish drying
    (Society of Fisheries Technologists (India), 2010) Joshi, P.N.
    The total fish production in India is 6.4 million t of which about 3,4 million t is from inland and 3.0 million t from marine sources (Ayyappan and Diwan, 2007). Fish are an extremely perishable foodstuff. Spoilage occurs as the result of the action of enzymes (autolysis) and bacteria present in the fish, and also chemical oxidation of the fat which causes rancidity.
  • Item
    Design and fabrication of a tilting kettle for fish processing industries
    (Society of Fisheries Technologists (India), 1982) Joshi, P.N.
    An electrically heated stainless steel jacketed kettle of 80 litter capacity working at a steem pressure of 1.06 kg f cm -2 has been designed and fabricated for cooking fish and prawn in the fish processing industry. The equipment which is provided with tilting arrangement and operetional controls aloows cooking at a constant temperature under highgienic conditons . The details of the disign, construction and operation are discribed the cost of equipment is about Rs.8000. The economics of operation are also presented.
  • Item
    Development of a fish pump
    (Society of Fisheries Technologists (India), 1982) Namboodiri, K.S.
    Pump fishing techniques can be applied to all shoaling fish or in a fish shoal which is created by some attraction method. The normal centrifugalpumps and reciprocating pumps have moving parts inside the pump and which works on the principle of pressure difference created by compressed air-water mixture. The accessories required for installation on boat are also described.
  • Item
    Development of an aquatic weed harvester
    (Society of Fisheries Technologists (India), 1982) Namboodiri, K.S.; Velu, M.
    A machine for removing floating and submerged vegetation from large water spread is descrided. The harvester consists of a moving rake installed on a floating platform. The platform is constructed by bloting together five separate steel tanks.
  • Item
    Electronic instruments for investigations in riverine and reservoir fisheries
    (Society of Fisheries Technologists (India), 2001) Ramakrishnan, K.
    Electronic instruments play a vital role in collection of data for investigations in riverine and reservoir fisheries . The data collected will help to make realistic estimation of the resources and better understanding of related problems . The paper discusses the measurements made with electronic instruments developed by the Central Institute of Fisheries Technology, viz ., water current meter, depth meter, speed log . sedimentation monitor, turbidity meter and imported instruments such as echo sounder and global positioning system in rivers and reservoirs . Such data can be incorporated in geographical information system for better planning, management and harvesting of resources .
  • Item
    Electronic instruments for testing and standardisation of fishing crafts
    (Society of Fisheries Technologists (India), 1982) Sivadas, T.K.; Ramakrishnan, K.; Vijayabharathi, K.
    Electronic instruments have been developed indigenously for monitoring the performance of fishing craft to estimate their suitability to different types of gear and load conditions. Three types of instruments are reported namely, bollard pull monitor, speed and distance log and warp load meters. The bollard pull monitor monitors the bollard pull of boats during the bollard pull tests which is the standard test for assessing the capacity of the engine at different r.p.m. The instrument senses bollard pull by means of its load cell and displays the bollard pull in tonnes in a meter kept at a convenient place connected by a two-core cable. A potentiometric recorder to which the signals are fed from the instrument, not only makes permanent records of the bollard pull in graphical from, but also reveals the nature of the power developed clearly. The speed and distance log indicates the speed of motion of the vessel and the total distance travelled. This instrument is needed for assessing the dynamic performanceof the craft. The data from the meter can be fed to recorder for permanent records and precise analysis. Two types of warpload meters are reported namely, portablewarp load meter for use in smaller boats up to 1000 kg and ship-installed warp load meter for permanent installation in large vessels for measurements upto 5 tonnes. The former can be used in all types of boats with in the measurement range much easily without disturbing the routine fishing operations. The design and facilities for feeding the signals to recorders for precise data analysis. All the instruments are fully indigenous and have been relesed for commercialisation. Some typeical data obtained from theinstruments during the static and dynamic tests are also presented.
  • Item
    Electronic wire telemetering instruments for the engineering studies of otter trawls
    (Society of Fisheries Technologists (India), 1982) Sivadas, T.K.; Vijayabharathi, K.; Ramakrishnan, K.
    The paper reports with telemetering instruments for the measurements of depth of operation, angele of attack of otter boards, tilt of otter boards, under water tension for the measurements of the resistance to motion of the different part of the net during operation, mesh size variation and water flow around and inside the net.
  • Item
    A fryer for battered and breaded fishery products
    (Society of Fisheries Technologists (India), 1998) Joshi, P.N.
    A frying battered and breaded seafood products was developed. It consist of a stainless steel vessel designed to minimise the quantity of oil and obtain maximum heating efficiency and is provided with an internal heating system with temperature control. The equipment can be used to deep fry about 200 cutlets and similar products per hour. The fryer could be used advantageously by small scale caterers and fast food restaurant operators.
  • Item
    Fuel efficient hearth for boiling clams
    (Society of Fisheries Technologists (India), 1987) Pillai, S.A.; Balachandran, K.K.
    a simple and fuel efficient hearth was designed for boiling clams for recovery of meat. Experiments were conducted to study the efficiency of hearth using different fuels and compared with the conventional hearths and fuel used. The new hearth prevents much of the radiation loss of heat taking place in the conventional hearths which have an open area of about 70% on the circumference. The new hearth also allows for controlled burning of fuel by controlled admission of air using a hand blower. Any type of solid fuel can be used. Paddy husk has been found to be the most efficient and cheapest fuel for use in the new hearth.
  • Item
    Hydro-meteorological data acquisition system
    (Society of Fisheries Technologists (India), 2001) Vijayabharathi, K.; Ramakrishnan, K.
    Technical features of a composite equipment, developed at Central Institute of Fisheries Technology (Cochin), for the measurement of 9 parameters related to air, water, soil and environment, are described in this paper.. The system consists of 16 sensors installed at different locations within a limited area to sense the respective parameter and electronic console unit for display and memory module for storage of data. PC based post-processing and analysis of the stored data is possible.
  • Item
    Indigenous electronic instruments for assessing quality of fishery products
    (Society of Fisheries Technologists (India), 2002) Vijayabharathi, K.; Ramakrishnan, K.
    Electronic Instruments play a vital role in evaluating the quality of fishery producta and thereby ensuring food safety. Instruments are used for quantitative evaluation of physical parameters of fishery products. A brief account of indigenous electronic instruments developed by Central Institute of Fisheries Technology (Cochin) for measuring important parameters such as temperature, a w gel strength, brine concentration, and those related to dehydration of fish using solar energy are presented in this paper.
  • Item
    Indigenous instrumentation for collection of field data
    (Society of Fisheries Technologists (India), 1998) Sivadas, T.K.; Ramakrishnan, K.; Vijayabharathi, K.
    Technology developed in Central Institute of Fisheries Technology to meet the instrumentation needs in fisheries and agriculture are highlighted. Standardisation of sensors with associated electronics in modular approach has resulted in high flexibility in the selection of different combination for specific aplications. Controls and systems have been developed for operation in single or multichannel format with automatic or manual mode using memory or computer.
  • Item
    Marine environmental monitoring systems for investigations in fisheries and allied fields
    (Society of Fisheries Technologists (India), 1982) Sivadas, T.K.
    The successful implementation of some instrumentation programmes for acquiring marine environmental data are reported. The instruments are used for instantaneous measurements of water current and direction, salinity, temperature and depth of operation. Sensors with novel features were developed and used in water current meter and salinity -temperature-depth meter. The sensors designed with very low impedance and high level signal outputs have rendered the instruments to be quite reliable with comparatively simpler electronics. A sixteen channel data acquisition system designed for automatic of coastal environmental data is reported.
  • Item
    Mechanisation of traditional fishing vessels in the South - West Coast of India
    (Society of Fisheries Technologists (India), 1982) Pillai, S.A.
    The paer describes the various stages of development in the mechnisation of traditional fishing vessels in the south-west coast of India. Both imported out-board motors using petrol-kerosene engine and indigenously developed inboard-out board drive units using diesel power, have been tried to mechanise the traditional craft.
  • Item
    Problems in mechanisation of low energy fishing craft for coastal waters
    (Society of Fisheries Technologists (India), 1991) Pillai, S.A.; Namboodiri, K.S
    Ther peper discribes the stages of development in mechanisation of traditional fishing craft and the problems connected with operational coast of these divices. Both imported outoboard motors using petrol kerosene engine and indigenously developed drive unit have been tried to machanise the traditional craft. The comparative merits and demerits of these types of drives are discused in the paper.
  • Item
    Solar processing monitor
    (Society of Fisheries Technologists (India), 1987) Sivadas, T.K.; Ramakrishnan, K.; Vijayabharathi, K.
    An electronic equipment developed for monitoring the parameters relevant to solar drying of fish namely, water evaporation, air temperature, weight loss and moisture is described briefly in the paper. The special features ad advantages of the equipment are remote operated sensors enabling centralised monitoring, their respective total values over long duration, recording facility and flexibility to accommodate any number of the parameters as required for specific programmes.
  • Item
    Studies on the insect infestation of cured fish and their control
    (Society of Fisheries Technologists (India), 2002) Bindu, J.; Joseph, K.G.; Nasser, M.
    Insect infestation of dried fish is a major problem in tropical areas. Drying of fish on the beach makes it more susceptible to insect infestation. Dipterans belonging to the family Calliphoridae, Sarcophagidae and Muscidae and beetles of the family Dermestidae and Cleridae are the major insect pests. The Dipterans infest the fish during the drying process while the beetles during storage. Studies on the behaviour of these pests are discussed and control measures based on the ethological studies are recommended.