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

A comparator circuit and dynamic threshold technology, applied in the direction of logic circuit interface device, logic circuit connection/interface layout, etc., can solve the problems of wireless sensors such as small size, limited battery energy, and inability to meet long-term work needs, and eliminate oscillation phenomenon , low working voltage and simple structure

Active Publication Date: 2019-05-07
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

Examples

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Embodiment 1

[0035] See figure 1 and Figure 4 , figure 1 It is a schematic circuit structure diagram of a low-power dynamic threshold comparator interface circuit provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of a circuit structure of a switching load circuit provided by an embodiment of the present invention. The low power consumption dynamic threshold comparator interface circuit 10 includes: an input terminal VIN, an output terminal VAUX, a first comparator circuit 11, a second comparator circuit 13, a switch load circuit 15 and a ground terminal GND; wherein the switch The load circuit 15 includes a first power switch MPS, a second power switch MNS, a load capacitor CL, and a load resistor RLOAD. The first power switch MPS is electrically connected between the input terminal VIN and the output terminal VAUX and controls terminal is electrically connected to the output terminal Vout1 of the first comparator circuit 11, the load capacitance C...

Embodiment 2

[0045] see again Figure 1 to Figure 4 , this embodiment describes in detail the low power consumption dynamic threshold comparator interface circuit 10 of the present invention on the basis of the above embodiments. details as follows:

[0046] 1. The dynamic threshold comparator 1 is the first comparator circuit 11

[0047] See figure 2 , mainly composed of five PMOS transistors P1, P2, P3, P4, and P5 and four NMOS transistors N1, N2, N3, and N4.

[0048] The source terminal of P1 is connected to the power supply voltage VDD, the drain terminal of P1 is connected to the drain terminal of N1, the gate terminal of P1 is connected to the substrate of P1, the gate terminal of P2, and the substrate of P2, and the substrate of P1 is connected to the gate terminal of P1 The gate terminal of P2 is connected to the substrate of P2;

[0049] The source terminal of P2 is connected to the power supply voltage VDD, the drain terminal of P2 is connected to the drain terminal of N2, t...

Embodiment 3

[0081] The invention also provides a rectifier and a wireless sensor. The building blocks of the wireless sensor are housed in a housing, which includes a rectifier. The rectifier is a rectifying device whose main function is to change alternating current (AC) into direct current (DC), and after filtering, charge energy storage elements such as supercapacitors or rechargeable batteries for use by loads. For the rectifier of the present invention, it can include The low power consumption dynamic threshold comparator interface circuit 10 in the above embodiments.

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K19/0175
CPCH03K19/017509
Inventor 李娅妮庞光艺汤子月朱樟明杨银堂
Owner XIDIAN UNIV
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