Proximity Sensors Based Marine Engine Fault Detection using CAN Protocol

ABSTRACT


INTRODUCTION
In a domain where vessel motors are ordinary, AMS (Alarm Monitoring System) is a framework that screens ship engines, which are for moving, control era, control of gadgets, and stacking of load.AMS can inform the movements of vessel motors and their status [1].In any case, AMS can't foresee and judge the engine issue brought about by scraped areas and deflections of the primary parts of the motor.Vessel motors dependably take the consistent load and rehashed developments of its inside segments, so the rubbed spots and deflections of the motors fundamental parts should tell me number into a record.
In an unforgiving situation with consumed slop, an acceptance sort vicinity sensor is utilised to foresee the life expectancy of the ship motor's fundamental parts.Fast reaction time is required for an approval type region sensor and marine motors with thought concerning the working rate of the motor unit.Dependable operations are requested in a brutal situation with high temperature and weight.The past acceptance sort vicinity sensor for controlling and observing vessel engines worked in a simple flag handling technique in [2]-[4] which has a 2ms reaction time, and a non-linearity rate relied on upon a kind of material.The greatest rate used to be 2%, however as of late by changing the acceptance sort vicinity sensor's flag preparing technique from simple to computerised, the rate enhanced inside 1%.This paper proposed an inconvenience conclusion framework for vessel motors on AMS.It can analyse the mistakes and blames by measuring the deflection of a crankshaft and the purpose of the focal point of a crosshead occasionally.
This paper plans a nearness sensors upheld with a CANopen convention for vessel motors with measuring deflection of a crankshaft and a base perfectly focused of a crosshead progressively.This paper likewise outlines an inconvenience conclusion framework that can be connected with AMS given MODBUS/TCP master protocol [5]- [7].This structure utilises got information, which is the deflection of a crankshaft and a base right on of a crosshead from the sensor.The outlined closeness sensor in [8] has a reaction time inside 700us and 0.3% of non-linearity rate.It is satisfied with specific required conditions.The This paper presents research operates in fault and fault tolerant control of electric vehicle powertrains mainly composed of an induction motor, a 2-level PWM inverter and an instrument chain.The considered failures were mainly measurement error due to faulty sensors and power inverter malfunctions.In reference [17] it discussed the method that distributes the computation workload from the DMV to RSBs while releasing only a limited amount of information by using hash collisions.
In segment II and III, clarify about the outlined closeness sensor and composed an inconvenience finding framework.The simulation result is appeared in area IV Finally, in section V examine the conclusion and future work.

PROBLEM ANALYSIS AND DESIGN PROXIMITY SENSORS FOR VESSEL ENGINES
Rapid response time is the required time for proximity sensors in marine engines regarding the operating speed of the motor unit.Reliable operation is demanded in a specific harsh environment of vessel engines with high temperature and pressure.Figure 1 shows the minimum design specification of a proximity sensor and its operating environment.

Problem of an existing proximity sensor
In the case of the current proximity sensor, it includes an analogue correction circuit for linearity, but 2% of a nonlinearity rate is not enough to satisfy the required standard.Also, in 100C or higher temperatures and greater than 30 bars of pressure, the analogue channels are sensitive, which leads to increasing the error rates.Therefore, we propose a design of proximity sensors applying a digital signal processing method for exact measurement.

Design of networked proximity sensor based on digital signal processing
Figure 1 is a structure of proposed proximity sensors vessel engines.It is consists of resonance parts which makes high-frequency oscillation and continuous vibration.The detecting part function is to rectify the decreased signals.
Figure 2 shows a program structure of a proximity sensor for a vessel engine.The micro-controller manages all signal process, control and communication.It is designed to satisfy the sensors response time.This system uses 32bit of microcontroller and at the same time use STM32f100 of ARM CORTEX M3 that works as much as 24MHz.The structure of the program is consisted of signal receiving and filtering part, communicating, data compensation and controlling output port.

Application and Realization of CANopen protocol
The fundamental structure of CANopen protocol is defines3 layers as shown in Figure 3.It consists of a physical layer, data link layer, and the application layer.The CAN Controller is connected to the microcontroller, and it helps send and receive of the distance measurement, quality information of material of a measured object, and information about the correction value of circuit errors.In CANopen protocol, CAN 2.0A is ISO 11519 international standard, and the contract contains rapid transmission speed, CRC and retransmission.The proximity sensor consists of the network with bus topology, Standard CAN 2.0A version to dualise data link from the disconnection of communication track, and applies CANopen protocol that has the data transmission speed 125kbps [9].The response time marked on the notification on AMS measured by linking suggested proximity sensor, display and, and then inputting impulse more than the limit.The response time is measured by giving variety in a magnetic field in the detecting coil of sensor measurement part because it can not give the displacement of a measured object as the unit impulse.At the detecting coil of suggested sensor measurement part, produce the test loop to change magnetic field.Figure 5 shows the time of reply of proximity sensor by increasing unit impulse.The output is measured by using Oscilloscope.The result indicates that the date of response (6x) is within 700uS, which is satisfies the requirement to use as a controlling ship engine and proximity sensor for supervisory service.

CONCLUSION
In this paper, the execution of nearness sensor is verified by outlining and understanding the sensor to foresee the life of first hardware of ship motors, and it made it conceivable to identify blames through measuring and regulating deflection of crankshaft and base right on target of crosshead continuously.The investigating arrangement of the ship motor is acknowledged, and its execution is assessed to have the capacity to check data of engine life AMS (Alarm Monitoring System).For in the future research, we want to study plan strategies to enhance exactness of system implanted closeness sensor and nonlinearity, and outline frameworks that can quantify life of extensive ship motor by contemplating disintegration measure strategy for chamber liner and including it to investigating arrangement of ship motor, and create and concentrate another procedure to substitute a moving normal filter that finds the normal of middle by testing ADC information.

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ISSN: 2502-4752 Indonesian J Elec Eng & Comp Sci, Vol. 9, No. 3, March 2018 : 619 -623 620 proposed inconvenience conclusion frameworks reaction time is likewise satisfied with 500ms.The required response time constraint based the boats classification clear standard is inside 2s.Secure and Efficient Distance Effect Routing Algorithm for Mobility (SE_DREAM) in MANETs is considered for providing security [10]-[13].In [14] the paper presented IPv6 neighbour discovery method including IoT devices' automatic lightweight address setting and enhanced RPL-based lightweight routing protocol in the IoT-based wireless inter-device communications environment.The Graphical User Interface (GUI) presented in this paper [15] is associated with a relatively complete test and characterisation tools allowing its use by researchers and professionals working in the application and development fields related to photovoltaic [16].

Figure 1 .
Figure 1.The circuit structure of proximity sensor for vessel engine

Figure 2 .
Figure 2. Flowchart of a proposed proximity sensor for vessel Engines

Figure 4 .
Figure 4. Block diagram of a troubleshooting system for vessel engine

Figure 5 .
Figure 5. Response time of proximity sensor