Abstract: The present disclosure provides a ubiquitous energy fusion and harvesting system, formed into a hexahedron by splicing light-heat-radio frequency (RF) fusion energy-harvesting devices, light-heat-kinetic-RF fusion energy-harvesting devices, and a heat-dissipating circuit board. The system can adapt to multi-directional and all-time solar energy harvesting, and multi-band and omnidirectional RF energy harvesting, avoiding insufficient output of electric energy in a harsh environment of single energy harvesting. In the present disclosure, a solar cell sheet serves to provide a heat source for a temperature difference power generation sheet, and a piezoelectric power generation array serves as a cooling fin to cool the temperature difference power generation sheet, realizing a multi-source ubiquitous energy composite harvesting and conversion with mechanism fusion and spatial mutual benefit.

Abstract: A coverage path planning (CPP) method for multiple unmanned aerial vehicles (UAVs) in complex irregular areas includes: acquiring a plurality of regular sub-areas through a multi-strategy recursive optimal decomposition approach to address the problem of excessive decomposition of a concave vertex; and proposing, by considering the efficiency of solving for an access order among different areas, an adaptive large neighborhood search method to quickly acquire the access order among the areas, thereby acquiring a complete coverage planning path. Compared with existing methods, the CPP method can quickly and efficiently achieve coverage of complex irregular areas, improving the efficiency of UAV path planning. In addition, the CPP method has universality and is applicable to any unmanned system operating on a plane, with high practical value.

Abstract: A digital method and system for constructing a three-dimensional coverage demand heat map can generate a digital coverage demand heat map for a three-dimensional actual scenario. The method includes: firstly, performing layered discretization on a three-dimensional space; secondly, quantifying grid values of a heat map based on points of interest, detection directions, and weights of elevation layers; thirdly, proposing concepts of virtual points of interest and environmental regional division to achieve multiple coverage based on the points of interest and hierarchical coverage based on the detection directions; and finally, introducing pooling nodes and extracting a coverage demand heat map of a relatively low resolution, thereby achieving a trade-off between computational performance and computational cost.

Abstract: A photoelectric-thermoelectric-piezoelectric coupled hybrid energy harvesting apparatus includes a housing, a photoelectric-thermoelectric energy harvesting apparatus, and a piezoelectric energy harvesting apparatus. The housing is configured to support and accommodate the photoelectric-thermoelectric energy harvesting apparatus, the piezoelectric energy harvesting apparatus, and a heat dissipation plate. The photoelectric-thermoelectric energy harvesting apparatus is respectively arranged on five surfaces of the housing to implement reciprocally coupled harvesting of solar energy and thermal energy in a working environment. The piezoelectric energy harvesting apparatus is arranged on a right side surface of an interior of the housing to implement reciprocally coupled harvesting of thermal energy and mechanical energy in the working environment.

Abstract: The present disclosure provides a ubiquitous energy fusion and harvesting system, formed into a hexahedron by splicing light-heat-radio frequency (RF) fusion energy-harvesting devices, light-heat-kinetic-RF fusion energy-harvesting devices, and a heat-dissipating circuit board. The system can adapt to multi-directional and all-time solar energy harvesting, and multi-band and omnidirectional RF energy harvesting, avoiding insufficient output of electric energy in a harsh environment of single energy harvesting. In the present disclosure, a solar cell sheet serves to provide a heat source for a temperature difference power generation sheet, and a piezoelectric power generation array serves as a cooling fin to cool the temperature difference power generation sheet, realizing a multi-source ubiquitous energy composite harvesting and conversion with mechanism fusion and spatial mutual benefit.

Abstract: A hybrid energy harvesting apparatus for harvesting omnidirectional multi-band radio frequency (RF) energy and thermoelectric energy includes a housing, an RF harvesting apparatus, a thermoelectric harvesting apparatus, and an energy storage apparatus. The housing is a hollow polyhedron. The thermoelectric harvesting apparatus includes a thermoelectric sheet applied to an outer side surface of the housing and a thermoelectric conditioning circuit mounted in the housing. The thermoelectric sheet is configured to harvest thermal energy and convert the thermal energy to electrical energy. The RF harvesting apparatus includes a multi-band two-dimensional antenna array tightly attached to the thermoelectric sheet and an RF-DC conditioning circuit mounted in the housing. A multi-band two-dimensional antenna in the multi-band two-dimensional antenna array is configured to harvest RF energy and convert the RF energy to electrical energy and dissipate heat from the thermoelectric sheet.