The circuit and method of using the weak energy harvesting technology of single-chip microcomputer io port

Abstract

The invention discloses a circuit and a method utilizing the weak energy harvesting technology of a single-chip microcomputer IO port. The circuit comprises a weak energy source, a low-loss rectifying module, loading equipment and an energy harvesting single-chip microcomputer. The method comprises the following steps: S10, setting a designated weak energy harvesting value; S20, monitoring whether the weak energy reaches the designated value in real time; S30, if yes, utilizing an energy harvesting single-chip microcomputer to output a control signal to absorb the energy so as to charge an accumulator; S40, utilizing the energy harvesting single-chip microcomputer to output another control signal to release the energy of the accumulator so as to supply power for the loading equipment. According to the characteristics of the weak-energy and low-power-consumption single-chip microcomputer, a big inductor and an MOS tube energy dissipator are not needed, the extremely simple circuit and method are utilized to achieve the output-controllable weak-energy harvesting function, the characteristics of high harvesting efficiency, low loss and low cost are achieved, and favorable economical and social benefits are obtained. The circuit and the method can be widely used in various weak-energy harvesting circuits.

Description

technical field [0001] The invention relates to the field of energy acquisition and conversion, in particular to a circuit using the weak energy collection technology of the IO port of a single-chip microcomputer, and also relates to a method for using the weak energy collection technology of the IO port of a single-chip microcomputer. Background technique [0002] Collect the weak energy in the natural environment, use high-efficiency and low self-loss energy harvesting circuit, direct single-chip algorithm to automatically identify the characteristics of various micro-energy, and collect electric energy with maximum efficiency according to their respective characteristics, so as to provide power for subsequent loads Sustainable energy solves the current dependence on batteries for similar load power supply, greatly reduces the cost of use and maintenance, and avoids environmental pollution caused by the use of batteries. [0003] In the prior art, micro-energy harvesting c...

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Problems solved by technology

[0003] In the prior art, micro-energy harvesting circuits and methods require various components such as DC-DC, single-chip microcomputer, MOS, inductance tube, etc. The loss of these components is relatively small compared to the weak energy. Insanely huge, can't even get these circuits to work

Specifically, the micro-energy collection efficiency in the prior art is low, the self-loss is large, and the energy collection method is single, which cannot provide effective energy for subsequent loads, and cannot achieve miniaturization, diversification, and modularization when providing the same energy

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