Radio frequency electromagnetic wave energy powered clock device

Abstract

The invention discloses a radio frequency electromagnetic wave energy powered clock device. The device is integrated on a circular double-layer PCB dielectric plate, the top layer of the PCB dielectric plate is depicted as a clock pattern; the bottom layer of the PCB dielectric plate comprises a radio frequency energy collection antenna, a radio frequency energy collection circuit, an energy storage capacitor and a clock working circuit. The radio frequency energy collection antenna is a fractal antenna with coplanar waveguide feed, the antenna patch style adopts a fractal structure, the fractal structure and the coplanar waveguide feed can increase the bandwidth of the antenna, so that the antenna can collect the radio frequency energy of Wi-Fi and mobile phone 2G, 3G, 4G signals in the environment. The radio frequency energy collection circuit comprises matching, rectifying and filtering circuits, wherein the energy storage capacitor is a high-quality super capacitor. The radio frequency electromagnetic wave energy powered clock device can collect the electromagnetic wave energy in the surrounding environment, and can also realize rapid wireless charging through the independent emission source or the mobile phone, the storage energy is applied to the clock working circuit, so that the clock device works normally.

Description

technical field [0001] The invention belongs to the field of self-powered clocks, and relates to the design of a multi-band fractal antenna and the design of a radio frequency energy collection and storage circuit. Background technique [0002] Today, with the rapid development of electronic technology, wireless sensor networks are widely used in various fields and transmit monitoring data in real time. At the same time, in order to meet the needs of human life, more and more sensors need to be placed in inaccessible or harsh environments. In terms of infrastructure monitoring, such as medical monitoring, wireless sensor networks can realize wireless monitoring of human physiological data, tracking of medical staff and patients, monitoring of drugs and medical equipment, etc. In response to the current problem of aging society, wireless sensor networks can help the elderly and the disabled receive care by embedding semiconductor sensors in objects such as shoes, furniture, ...

AI Technical Summary

Problems solved by technology

However, as the sensor network is distributed in a wider and more complex environment, the maintenance and replacement of batteries will be a very difficult problem, and, with the miniaturization of sensor equipment, long-term, stable green power supply methods have always been It is a technical problem restricting its further development

At the same time, the replacement of used batteries will also increase environmental pollution.

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