Energy self-supply method and device for sensor network node
A technology of sensor network and node energy, which is applied in the field of sensor network to achieve the effect of improving working time
Active Publication Date: 2014-05-07
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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These two methods can extend the service life of nodes to a certain extent, but they cannot fundamentally solve the problem
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[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0030] The inventor found in the research that since solar energy is easily affected by climate and day and night, and solar cells are generally voltage-limited current sources, solar panels are generally not allowed to directly supply power to nodes alone, and energy storage units are needed as an intermediary to make Solar panels indirectly power the energy-consuming units. Other types of ambient energy suffer from similar drawbacks and require energy storage units as intermediaries. At the same time, in order to obtain more environmental energy, it is necessary to make the solar panel work at the maximum power...
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The invention provides an energy self-supply device for a sensor network node. The device comprises an energy storage unit and an energy management unit. The energy storage unit comprises a main energy storage unit and a standby energy storage unit. The energy management unit is suitable for detecting the energy state of each of the main and standby energy storage unit, selecting one of the main and standby energy storage units according to the state to supply power to an energy consumption unit, selecting the main energy storage unit to supply the power to the energy consumption unit when the energy state of the main energy storage unit meets the working voltage of the energy consumption unit, and selecting the standby energy storage unit to supply the power to the energy consumption unit when the voltage of the main energy storage unit does not meet the working voltage of the energy consumption unit and the energy state of the standby energy storage unit meets the working voltage of the energy consumption unit. The invention also provides an energy self-supply method for the sensor network node. By the device and the method, the working hours of the sensor network node can be greatly increased, and the service life of the node can be prolonged.
Description
technical field [0001] The invention relates to sensor network technology, in particular to a sensor network node energy self-supply method and device. Background technique [0002] Wireless sensor network (Wireless sensor network) is one of the research hotspots in the field of IT at present. Compared with traditional network systems, wireless sensor network features such as large-scale, random layout, multi-hop communication mode, self-organization and cooperative work make it widely used in It has broad application prospects in many fields such as military affairs, industry, home furnishing, and environment. [0003] Sensor nodes are important components of sensor networks, and their working life affects the survival time of the network. At present, most sensor network applications use dry batteries as the energy supply to power nodes. Due to the limitation of volume and cost requirements, the energy of the batteries carried by nodes is limited. Once placed, the batterie...
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IPC IPC(8): H02J9/06
Inventor 张静静赵泽陈海明崔莉
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI