In recent years, marine eco-environment sensors have gradually become smaller and more intelligent. This poses a great challenge to the energy supply, materials, and communications of the entire sensing system. New energy technologies for marine eco-environment sensors have been developed at home and abroad. Research, such as solar energy, wind energy, temperature energy and wave energy. Compared to solar energy, wind energy and temperature energy, waves contain huge energy and have more time and space applicable range. However, due to the wave motion is multidirectional reciprocity. Movement, the characteristics of its randomness in motion, results in unstable captured energy flow, and it is difficult to design appropriate energy conversion devices for wave energy power generation devices. The development and development of a new, simple and sustainable wave energy harvesting system has gradually become a technology. Focus of the industry.
Recently, Zhu Guang's research team of the Beijing Institute of Nano Energy and Systems, Chinese Academy of Sciences proposed a flexible random wave friction nanogenerator based on solid/liquid interface frictional electrification and two-dimensional array electrode integration to efficiently collect and convert wave energy and use The wireless sensor circuit is driven to transmit wireless signals at regular intervals. This work uses a two-dimensional array electrode rectification chip integrated structure design to convert the random wave mechanical energy collected from two-dimensional and multi-directional motions into electrical energy output. It can efficiently and efficiently under a variety of random wave conditions. Collect and convert wave mechanical energy. Its structural advantages are mainly reflected in: Under the same kind of random wave conditions, the output of flexible friction nano-generators increases with the number of arrays of two-dimensional array electrodes; friction nano-power generation with higher array number The machine can obtain higher power output under a variety of random wave conditions. Under laboratory conditions, a flexible two-dimensional array integrated friction nanometer generator with an effective area of 10cm*7cm drives the wireless signal transmission circuit board to emit wireless signals. Achieve a 53-second time to transmit a wireless signal, basically meeting the needs of marine monitoring Scope, near-real-time, and 24/7 monitoring of energy requirements. The study proposes flexible friction nanogenerators that collect wave energy to drive marine wireless sensor signal transmissions, with advantages of light weight, low cost, environmental protection, energy saving, and ease of maintenance. The power supply problem of the unsupervised network nodes and the implementation of the ocean remote self-powered wireless sensor network system provide new energy supply solutions with important research and practical application values. Related research results were published on the recent ACS Nano ( DOI: 10.1021/acsnano.7b08716).
