Battery voltage equalization output optimization system in wireless sensor network node power management

Abstract

The invention discloses a multi-battery voltage balance output optimization system used in a wireless sensor network node power management system. The system includes a battery placement module, a programmable matrix switch module, a subsequent charging and voltage stabilization module; the battery placement module is used to place multiple batteries in series to achieve the normal working voltage of the wireless sensor network node; the programmable matrix switch module is used to control and change The connection mode between the batteries, the positive and negative terminals of each battery in the battery placement module are connected with the programmable matrix switch system; Battery connection mode, the operation of the program-controlled matrix switch system is controlled by a single-chip microcomputer, and at the same time output the high voltage in the series battery pack and the voltage of a certain or several series of batteries, and periodically change the voltage borne by a certain or several series of batteries, To achieve the purpose of evenly consuming the power of each battery; the voltage output terminal of the matrix switch system is connected in parallel to the subsequent charging and voltage stabilization module. Ensure that the subsequent sensor equipment has a continuous, stable and reliable power supply.

Description

technical field [0001] The present invention relates to power supply in the field of wireless sensor networks, in particular to a high-efficiency multi-battery voltage output method and system Background technique [0002] A wireless sensor network is a wireless network composed of a group of multiple sensor nodes distributed in a set location in a wireless self-organizing manner, which is used for sensor nodes to cooperatively sense, collect and process the information of sensing objects in the geographical area covered by the network and timely A network that publishes sensing results to users. [0003] An important feature of wireless sensor networks is the limitation of energy. In many cases, the nodes in wireless sensor networks are powered by batteries, and the energy is limited, and the sensor nodes themselves use software or hardware methods to reduce the power consumption of themselves and the network. It makes it possible to use battery-powered nodes for a long ti...

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Problems solved by technology

The disadvantage of this method is that the linear voltage regulator chip is used to step down the voltage, and most of the energy is lost in the step-down. For example, the voltage of 9V drops to 3V, and the energy utilization rate is only 33%, which brings huge energy to the nodes that are originally in short supply. Energy loss; the second method is to increase the voltage from 3V to the required voltage value of peripheral sensors in the form of non-linear boosting. This method relies on boosting chips. The quiescent current of the boost chip has already exceeded the power consumption of the entire node, resulting in a large amount of energy loss

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