Power supply device for wireless sensor network nodes
A wireless sensor and network node technology, applied in the direction of circuit devices, battery circuit devices, current collectors, etc., can solve the problems of unresolved node power supply security, limit the application of wireless sensor networks, and have potential safety hazards, etc., to achieve good electrochemical performance , Structural stability, and the effect of improving safety
Inactive Publication Date: 2013-06-19
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology
When the ambient temperature is higher than 40°C, charging the above four batteries is prone to bursting and burning, posing a safety hazard
It can be seen that the above four rechargeable batteries are not suitable for wireless sensor networks to power nodes in some environmental monitoring applications with high safety requirements.
If the safety problem of node power supply is not solved, it will limit the application of wireless sensor network in the field of environmental monitoring
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[0025] In order to make the objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0026] In order to solve the potential safety hazard of wireless sensor network nodes in environmental monitoring, lithium iron phosphate batteries are selected as rechargeable batteries in the wireless sensor network node power supply device of the present invention. Lithium iron phosphate battery is a lithium iron phosphate (LiFePO 4 ) material as the positive electrode of the battery, and a new type of lithium-ion battery that uses graphite as the negative electrode of the battery. The positive electrode material of the battery has good electrochemical properties, the charging and discharging platform is very stable, and the structure is stable during the charging and discharging process. Even if the inside or outside of the battery is da...
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The invention relates to a power supply device for wireless sensor network nodes. The power supply device for the wireless sensor network nodes comprises a rechargeable battery which provides power for the wireless sensor network nodes. The rechargeable battery is an iron phosphate lithium battery. The invention further relates to a wireless sensor network system which comprises wireless sensor network nodes, the power supply device for the wireless sensor network nodes, and a sensor module. The power supply device for the wireless sensor network nodes comprises the iron phosphate lithium battery. The iron phosphate lithium battery is adopted to provide power for the wireless sensor network nodes and has a good electrochemical performance, a charge and discharge platform is quite stable, the structure is stable in the charge and discharge process, and the iron phosphate lithium battery does not burn and explode, and is good in safety performance even if the inside or the outside of the iron phosphate lithium battery is damaged. Therefore, the whole safety of the power supply device or the wireless sensor network system is improved, the lifetime of the wireless sensor network nodes is effectively prolonged, and the life cycle of the whole wireless sensor network is prolonged.
Description
【Technical field】 [0001] The invention relates to a power generating device, in particular to a wireless sensor network node power supply device, and also to a wireless sensor network system. 【Background technique】 [0002] A wireless sensor network is a wireless network composed of a large number of stationary or mobile sensor nodes in a self-organizing and multi-hop manner, which can perceive, continuously collect, process and transmit the data of sensing objects in a geographical area covered by the network from multiple angles (setting up multiple types of sensors). Monitor information and report to users. In environmental monitoring, because many wild environments are relatively harsh, such as coal mines, oil field safety monitoring, forest environment monitoring, agricultural ecological environment monitoring, etc., it is not suitable to build a wired network. Therefore, the use of wireless sensor network solutions to achieve environmental monitoring has great potentia...
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IPC IPC(8): H02J7/00
Inventor 耿永清于峰崎
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI