Low power consumption dynamic threshold comparator interface circuit and rectifier, wireless sensor

Abstract

The invention relates to a low power consumption dynamic threshold comparator interface circuit and a rectifier, a wireless sensor. The interface circuit comprises an input terminal VIN, an output terminal VAUX, a first comparator circuit 11, a second comparator circuit 13, a switching load circuit 15 and a grounded terminal GND; a second power switch MNS is electrically connected between the input terminal VIN and the grounded terminal GND, and the control terminal thereof is electrically connected to the output terminal Vout2 of the second comparator circuit 13; the in-phase input terminal of the first comparator circuit 11 is electrically connected to the output terminal VAUX and an inverted input terminal Vinn1 is electrically connected to the input terminal VIN; the in-phase input terminal Vinp2 of the second comparator circuit 13 is electrically connected with the grounded terminal GND and the inverted input terminal Vin2 is electrically connected with the input terminal VIN. The interface circuit is composed of the dynamic threshold comparator circuit and the switching load circuit, through the adoption of the dual-comparator structure, the integral design architecture is simple, the working voltage required by the circuit can be effectively reduced, the system power consumption is lowered, and the interface circuit is suitable for the middle-low power consumption energy acquisition system.

Description

technical field [0001] The invention belongs to the technical field of integrated circuits, and in particular relates to a low-power consumption dynamic threshold comparator interface circuit, a rectifier and a wireless sensor. Background technique [0002] Since most of the current wireless sensors use traditional batteries to supply energy, and the wireless sensors are small in size, and the battery energy carried by them is limited, which cannot meet the long-term work needs. On the other hand, as the energy consumption of more and more micro-power consumption products has been reduced to the microwatt level, it has become possible for microelectronic devices to collect energy from the environment and realize self-powered work. [0003] As an emerging energy technology, micro-energy harvesting is especially suitable for contracts that require long-term monitoring, harsh working environments, and inconvenient battery replacement, such as pressure monitoring in automobile t...

AI Technical Summary

Problems solved by technology

[0002] Since most of the current wireless sensors use traditional batteries to supply energy, and the wireless sensors are small in size, and the battery energy they carry is limited, which cannot meet the needs of long-term work.

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