Abstract
The abnormal heat fault of marine motor frequently occurs for the bad working environment. And the navigation safety and reliability of the ship had been affected seriously. The heat transfer path of the motor is analyzed theoretically from the point of view of heat transfer in order to solve this problem. The relationship between the surface temperature and the internal temperature is established. The surface temperature of the motor is measured in real time by the temperature acquisition module. And the measurement results are transmitted to the host computer through RS485 communication interface. The inner and outer surface temperature quantitative relationship is used to judge whether the inner temperature of the motor is abnormal or not, and the real-time alarm is carried out to realize the thermal protection of the motor.
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