Research On Shafting Monitoring System Based On Self-powered And Wireless Data Transmission

Large ships are an important part of our country’s marine development strategy,and the safe operation of the ship’s power shafting is the core of its safety guarantee,which puts forward higher and higher requirements for ship shafting monitoring technology.At present,the data measurement module of the shaft monitoring system has always relied on the supply of external electric energy.When the external electric energy has problems,it cannot effectively monitor the working state of the shafting.Therefore,a shafting monitoring system that does not rely on external electric energy must be designed.In order to realize that the shaft monitoring system does not rely on external power supply,a shaft monitoring system based on self-powered and wireless data transmission is designed.The system includes electromagnetic induction self-powered system,auxiliary circuit of monitoring system,data measurement and wireless data transmission system.The main contents of this paper are as follows:This paper mainly designs a self-powered shaft monitoring system,aiming at the current methods,technical background and development status of torque measurement,non-contact power supply and wireless data transmission technology.In order to solve the problem that the measurement data of the shaft monitoring system depends on the external power supply,a shaft monitoring system based on the electromagnetic induction self-powered method is designed.Based on the principle of electromagnetic induction,the self-powered system of the system is designed.By studying the basic characteristics of permanent magnets and the working characteristics of winding coils,comparing the relevant parameters of different materials,selecting permanent magnet materials and coil materials that meet the design requirements.Model the self-powered system,simulate the working state of the ship’s shafting,modify different parameter conditions for simulation,compare the simulation results,optimize the self-powered model,and design part of the structure of the self-powered system.In order to use the induced electric energy generated by the self-powered system,combined with the design index,design a rectifier and voltage stabilizing circuit.The rectifier voltage stabilizer circuit is simulated and tested in real objects,and the result shows that the circuit can convert the induced electric energy into working electric energy.Finally,the energy storage circuit module is designed.Through physical testing,the energy storage circuit can store electrical energy under working conditions and supply power to the working circuit under non-working conditions.The temperature and torque monitoring module is designed using hardware such as temperature sensor,torque strain gauge,and single-chip microcomputer,and the measurement program is written.Connect the module for testing,and the results show that the system can effectively measure temperature and voltage data and transmit it to the host computer.Finally,test the experimental bench to verify the effect of the system.The experimental results show that the self-powered shaft monitoring system can achieve self-power supply under the working speed of the shaft system and meet the design requirements;the auxiliary circuit of the system can stabilize the induced voltage to the working voltage and provide electrical energy for the working circuit;the data measurement circuit can accurately measure The shafting temperature and torque data,self-powered and wireless data transmission shafting monitoring system functions are basically realized.