The invention discloses an intelligent crop detection system comprising a plurality of wireless rechargeable detection nodes, a programmable unmanned aerial vehicle platform, and a radio frequency transmitter. The detection nodes are deployed in the soil of a to-be-detected area of a farmland; and sensors are used for detecting crop growing environment situations in all areas of the farmland. The staff can download a way point file for the unmanned aerial vehicle platform by a ground station according to GPS coordinates of the nodes; the unmanned aerial vehicle platform plans a flight track automatically based on the way point file content and adjusts the flight state in real time; the detection nodes collect the radio frequency energy sent by the radio frequency transmitter arranged on the unmanned aerial vehicle platform and thus provide power for the nodes themselves. According to the invention, with combination of the novel unmanned aerial vehicle technology and the radio-frequency-energy-collection-based radio charging technology, crop environment information at different position areas of the farmland can be detected effectively, thereby providing the scientific guidance for the agricultural production of the large farmland. The system is suitable for various crop growing environments.

Intelligent crop detection system

A radio frequency (RF) to direct current (DC) converter for an aerosol delivery device is provided. The aerosol delivery device includes a power source, and an antenna configured to receive radio-frequency (RF) energy from an external RF transmitter. The aerosol delivery device also includes a power harvesting circuitry configured to receive radio-frequency RF energy from an external RF transmitter, and harvest power from the RF energy to power or charge at least one electronic component of the aerosol delivery device.

Radio frequency to direct current converter for an aerosol delivery device

The invention discloses a structural health detection system for a high-rise building. The structural health detection system comprises a plurality of wireless rechargeable detection nodes, a programmable unmanned plane platform and a radio frequency transmitter, wherein the detection nodes are arranged in structures on each floor of the high-rise building, and are used for detecting health conditions of the structures through sensors; a worker downloads a hovering waypoint document for the unmanned plane platform through a ground station according to the altitudes of the detection nodes; the unmanned plane platform automatically flies according to contents of the hovering waypoint document and hovers near to each detection node; the detection nodes collect radio frequency energy transmitted by the radio frequency transmitter arranged on the unmanned plane platform to supply power to the nodes. By the combination of an unmanned plane technology and a wireless charging technology based on radio frequency energy collection, the structural health detection system can quickly and effectively detect health information of the structures on all the floors and in different position regions of the high-rise building, and provide a scientific judgment basis for judgment of the health conditions of the structures in the high-rise building; furthermore, the structural health detection system can precisely and efficiently complete a detection task, and is applicable to different high-rise building structure bodies.

Structural health detection system for high-rise building

The invention discloses a wireless-structure health monitoring node based on radio frequency energy acquisition. The node comprises an energy antenna module, an energy conversion module, a sensor module and a microprocessor module, wherein the energy antenna module is composed of a Patch antenna; the energy conversion module is composed of an RF-DC (Radio Frequency-Direct Current) energy conversion module, an energy storage module and a voltage stabilizing module; the sensor module comprises a temperature sensor module and a stress degree sensor module; and the microprocessor module comprises a microprocessor control module and a ZigBee wireless communication module. The wireless-structure health monitoring node based on the radio frequency energy acquisition, disclosed by the invention, can be used for automatically acquiring radio frequency energy in the environment, and converting the radio frequency energy into direct current so as to continuously supply power to the whole node, and continuously and stably transmit temperature and stress sensor information to the aggregation node.

Wireless-structure health monitoring node based on radio frequency energy acquisition

The invention belongs to the technical field of crop information acquisition, and discloses a crop growth node real-time technical information acquisition system and method. The crop growth node real-time technical information acquisition system comprises a temperature detection module, a humidity detection module, an illumination detection module, an insect counting module, a master control module, a wireless communication module, a cloud service module, an information statistics module, a technology optimization module, an information pushing module and an interaction module. According to the system, the growth environment condition of crops can be effectively and visually detected through the temperature detection module, the humidity detection module, the illumination detection moduleand the insect counting module, through technical advantages of the information statistics module, the technology optimization module, and the information pushing module, the precision of the information service is good, the timeliness is high, the interactivity is good, the system and method can be very easily applied to technical services including plantation and culture of animals, plants and aquatic products, the economic and social benefits are huge, and the application space is wide.

Crop growth node real-time technical information acquisition system and method

The invention discloses a 915MHz power adjustable high power radio frequency transmitter. The radio frequency transmitter comprises an oscillator module, a power amplification module, a power module and an antenna module; the oscillator module is composed of a voltage-controlled oscillator and a 2.5V voltage stabilized module; the power amplification module is composed of a radio frequency power amplifier and a microstrip line; the power module is composed of a lithium battery, a power socket, a 12V voltage stabilized module and a 5V voltage stabilized module; and the antenna module is composed of an RFID (Radio Frequency Identification Devices) planar antenna. The 915MHz power adjustable high power radio frequency transmitter provided by the invention can transmit electromagnetic waves with a center frequency of 915MHz to a space environment continuously and stably, the radio frequency transmitting power can be adjusted according to the actual need, the electromagnetic waves are directionally concentrated, and the energy transmission efficiency is high.

915MHz power adjustable high power radio frequency transmitter

The invention discloses a structure health monitoring system based on radio frequency energy collection. The system comprises a plurality of monitoring nodes, one aggregation node, one radio frequency source and a PC end upper computer. The monitoring nodes are deployed in the structure and detect a health state of a structure through a temperature sensor, a displacement sensor and a stress sensor. The radio frequency source is placed on an outer side of the detected structure. The monitoring nodes collect radio frequency energy sent by the radio frequency source so as to provided power for the nodes themselves. The aggregation node receives stress detection data sent by a terminal node in a wireless mode. The aggregation node is connected to a PC end through a USB serial port, processes the data and then sends to the PC end. After receiving the data, the PC end upper computer displays, processes and stores the data and provides a visual operation interface for a user. In the invention, a wireless rechargeable sensor node system monitors the health state in the structure and high practicality and transportability are possessed.

Structure health monitoring system based on radio frequency energy collection

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