Development Of Crankcase Oil Mist Monitoring System For Marine Engine Based On Arm

Large diesel engine crankcase explosion on ship security threat is very serious. If occurs theaccident, It not only bring enormous loss to shipping companies, but often also cause hugecasualties. The main engine crankcase explosion in1947"REINA DEL PACIFIC", led28crewson board death. After the investigation it is because of the ship diesel engine for a long time toproduce high temperature lubricating oil volatile oil and gas. And the mechanical friction,bearing fever causes the crankcase severe fever. Oil concentration is too high that will lead todiesel engine crankcase explosion under high temperature. In order to avoid the recurrence ofsimilar incidents, enterprises from all around the world started to develop the marine dieselengine oil fog detection equipment. Through unremitting efforts, the oil mist concentrationdetection alarm equipment emerged as the times require. This equipment can detect oil mistconcentration anomalies in crankcase and alarm even brake operation, thus effectively avoiddanger.Oil mist concentration detection device widely used in modern ships, the skilled operationhas become the maritime colleges teaching task. Ship oil mist concentration detection productson the market, the British called Graviner company development of oil mist concentrationdetection device of MARK series has the highest market share. But the purchases of a set ofmark6equipment costs are too high, resulting in huge economic burden for the maritime colleges.Teaching is not conducive to the expansion, so the development of an oil mist concentrationmonitoring simulation software has practical significance.The oil mist concentration detection monitoring system adopts the embedded ARMprocessor, Using the touch-screen technology which is pretty advanced in nowadays, it makesthe interface more humanized, The operating system is developed with the wince, which hasfeatures including less period of development easier to control and perfect integration tools.Select industrial control board as hardware platform development which should result inless period of development and reduce the development difficulty.Research contents are as follows:(1)To select the hardware, including the selection of sensor probe, a signal conversionmodule of oil mist simulation software, embedded development board and so on, completingcommunication debugging with embedded devices. Hardware selection criteria can be simulatedthe working principle of MARK6equipment. The operating system selection, selection ofsimulation software development platform is based on the operating system, to facilitate software development. To understand the oil mist concentration high lead to critical value explosion,setting the alarm threshold for simulation software. Be quiet familiar with the real MK6oil mistdetection equipment workflow.(2)To complete interface design of oil mist concentration detection alarm system, includingCustomizing software system of oil mist concentration monitor kernel, drawing software ofman-machine interface, writing interactive program and data storage program and so on. Theprogrammed simulated in the simulator, finally it can be downloaded in hardware equipment andcompleted the test.