Research On Energy Management Technology Of Electric Buoy For Marine Environment Monitoring

At present,the water quality of rivers,lakes,and oceans is polluted to varying degrees,which has seriously affected people's daily lives and the further development of various industries.As an important means of water quality monitoring,electric buoys have been widely distributed in rivers,lakes and seas.Due to their specific working environment,higher requirements have been placed on the performance requirements of electric buoys.In the context of the country's proposal for a strong country in the ocean,based on the Shanghai Municipal Science and Technology Commission's marine environment monitoring power buoy design project,this paper conducts a scheme design and research on the energy management of marine environment monitoring power buoys.Generally,the electric buoy mainly includes four parts: a wireless sensor circuit,a wireless communication circuit,a microcontroller circuit,and a power supply.Under marine environmental conditions,the power supply system often determines whether the entire electric buoy system is operating normally.At present,many marine equipment usually use a combination of solar power and storage batteries.Since the power generation efficiency of solar cells is still at a low stage,it has an important effect on improving the efficiency of solar energy utilization.Based on the research progress of electric buoys at home and abroad,this paper further optimized the energy storage,energy conversion and stability of the power system of the electric buoy.In terms of energy storage of electric buoys,based on existing power supply methods,super capacitors are added as auxiliary energy storage devices for electric buoy power systems.Energy flow models under different conditions are established based on the intensity of light.The hardware circuit of the system is designed to realize the effective management of the energy storage of the power supply system,avoid the waste of solar cell energy under low light conditions,and increase the energy storage of the electric buoy.In terms of the energy conversion of the electric buoy,the energy conversion model of the power system is analyzed,and the SOC values of the battery and the supercapacitor under battery energy storage and hybrid mode energy storage are monitored to observe the actual effect of the hybrid model.The charging current of the battery under the model is analyzed and simulated.By comparing the curves,it can be seen that in the hybrid energy storage mode,the peak current and voltage during charging can reduce the impact on the system and energy storage equipment,and reduce equipment damage.Based on the analysis of the energy conversion model,further loss analysis is performed on the key conversion circuits in the model,and an efficiency model is established to effectively improve the energy conversion efficiency of the circuit.In the stability of the power system,the PID algorithm is used to adjust the voltage of the system,and the key parameters of the PID are further optimized in combination with actual experience.Set up an experimental test environment,collect solar voltage,current,power,and battery charging voltage with and without the PID algorithm to compare and verify the effect of the PID algorithm on system stability.Finally,verify the PID algorithm on the system.The effective function of stability adjustment,and the collected signal parameter curve is used as the evaluation index of power management system stability.By optimizing the three aspects of energy storage,energy conversion and system stability of the electric buoy,the power management system of the electric buoy is effectively managed.