Self-driven nano-ultraviolet detection system with intelligent response wireless transmission

Abstract

The invention relates to a self-driven nano ultraviolet detection system employing smart responder wireless transmission. By adopting the ultraviolet detection system, a nano generator, a nano super capacitor, a nano ultraviolet sensor and a smart label are integrated on a flexible substrate, and meanwhile, energy supply, sensing and wireless transmission functions are achieved. An ultraviolet light signal detected by the nano ultraviolet sensor is wirelessly transmitted in a response form, so that the power consumption of the system is effectively reduced. A wireless sensing unit of the system adopts a semi-active type radio frequency identification device (RFID) label. A power supply unit of the system provides a part of energy for a chip of the smart label, so that the communication distance is greatly increased.

Description

Technical field: [0001] The present invention relates to multidisciplinary fields such as piezoelectric electronics, electrochemistry, materials science, and radio frequency identification, and in particular to an ultraviolet detection system with a coupling mechanism of a piezoelectric effect nano generator, a nano ultraviolet sensor, and a smart label. That is, a self-driven nano-ultraviolet detection system with intelligent response wireless transmission. Background technique: [0002] With the continuous development of information technology, the Internet of Things has quietly emerged in people's lives, and sensor networks are widely used in daily life and industrial production control. The use and research of ultraviolet light sensors, which are widely used in the Internet of Things, are urgently needed, which means that ultraviolet detectors must be able to complete multiple functions such as information collection, data processing and wireless communication in a small...

AI Technical Summary

Problems solved by technology

The traditional UV detection system has the following disadvantages: (1) The number is limited. Due to the large size of the traditional UV detection system, the number of detection systems in a specific place is limited, and the information cannot be fully understood; (2) ) requires regular maintenance (battery replacement), traditional UV detection systems usually need to be powered by an external battery, and the life of the battery is limited, and detectors that require regular battery replacement are not advisable in practical applications; (3) The working status is affected by the environment, etc.

At present, the power generation voltage of nanogenerators can reach very high. In 2012, the vertically arranged ultra-long PZT nanowire array nanogenerators produced by Wang Zhonglin's group output a maximum peak voltage of 209V, and a maximum peak current density of 23.5μA. / cm 2 , it can be seen that the generated current is relatively low, which restricts the output power, but does not hinder further applications. This is because the wireless sensor has two working modes: active and standby. In the standby mode, the sensor is in the "sleep" state with the lowest energy consumption, so , the power generated by nanogenerators has met the requirements of existing low-power commercial devices

The existing self-powered nanosystems still have some deficiencies. For example, the pH sensor in the self-powered pH detection system is composed of a single nanowire and has not yet formed an array. The infrared light wireless detection system is still using discrete commercial devices. At the stage of assembly, an integrated self-powered system has not yet been realized

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