3results about How to "Improve reading distance" patented technology

This application provides a method and device for reading RFID tags. The method described in this application enables cellular networks to read RFID tags. During the reading process, it ensures compatibility between the cellular network and existing passive RFID tags, achieving a mapping between tag status and RRC status, thereby increasing the compatibility of the cellular network and improving the tag reading distance without modifying existing tag products. Furthermore, the method described in this application can be executed by a relay device, thus avoiding increased computational complexity and power consumption for the tags. It is compatible with passive RFID tags already deployed in business scenarios, ensuring smooth technological evolution.

The embodiment of the application discloses a RFID tag device for soil temperature monitoring and a preparation method thereof, relates to the field of graphene RFID sensing technology, and combines an artificial magnetic conductor (AMC), significantly improves antenna gain and reading distance, and realizes long-distance passive soil temperature sensing. The device integrates a temperature sensor and an RFID tag chip, can accurately detect soil temperature and transmit data. In the preparation process, an electromagnetic simulation software is used to design an antenna structure, and a laser engraving technology is used to accurately process the graphene antenna and the AMC, so that the high performance and stability of the device are ensured. The problems of the traditional soil temperature sensor, such as dependence on manual operation, high cost, corrosion and limited transmission distance, are solved, and an efficient, environmentally-friendly and accurate soil temperature monitoring solution is provided for modern agriculture.

The application discloses a split type deep body temperature monitoring device, a preparation method and application, and belongs to the technical field of temperature monitoring. The monitoring device is prepared from biodegradable materials and comprises a double-layer electrode layer, a spacing layer, a connecting channel, a dielectric layer and a packaging layer. Each of the upper and lower electrode layers comprises a spiral inductance coil, a serpentine connecting wire and a capacitor plate. The spiral inductance coils are arranged on the two sides of the spacing layer and have opposite rotation directions, and are connected in series through the connecting channel to enhance mutual inductance. The serpentine connecting wire is used for connecting the spiral inductance coil and the capacitor plate, and improves mechanical flexibility. The application adopts a split type design, better realizes deep body temperature monitoring, and significantly improves a wireless reading distance and a Q value in cooperation with series-connected double-layer asymmetric coils, so that the accuracy of deep body temperature monitoring is comprehensively improved. Moreover, the sensor is made of fully biodegradable materials, secondary surgery for removal is avoided, and has a good biomedical application prospect.