"Mini" temperature measurement chip can be powered by router signal

The Netherlands Eindho University of Technology announced that a small size of wireless temperature sensors were developed. This sensor can utilize RF signals to achieve power. This means that the sensor does not have to connect any cable, and the user does not have to replace the battery for the sensor. This will be an important step in development for application scenarios such as smart buildings. In the future, smart buildings will be filled with sensors, thereby instantly responding to various needs of households. Such sensors need not only support for a long time, but it must be wireless and does not need to replace the battery. This sensor developed by Dr. Eindho University of Technology is only 2 square millimeters, with only 1.6 mg. This sensor currently has only 2.5 cm, and the researchers plan to expand this distance to 1 m within a year, and the ultimate goal is 5 meters. The sensor is equipped with a special router, and the built-in antenna can transmit RF electromagnetic waves to the sensor and bring electricity. Since energy transmission is precisely aiming at the sensor, the router will only consume very little power. In addition, the sensor's own design also enables energy consumption to maintain a very low level. This sensor can be embedded below paint, plastic and concrete. Wireless Technology Eindhoven University of Technology professor Peter Barr Tucci said that this means that the sensor can be easily installed in a building. The built-in antenna built into the sensor can achieve energy via the router. After obtaining sufficient power, the sensor will be turned on, the measured temperature and sends a signal to the router. Based on the measured temperature, this signal has slightly different frequencies. According to the frequency, the router can calculate the actual temperature. The same technique can be used in other types of wireless sensors, such as motion sensors, light sensors, and humidity sensors. Barr Tucci said, the scope of application of this technology is widely used, for example, can be used in payment systems, wireless authentication systems, smart buildings and industrial systems. In addition, the high cost of this technology is not: in the case of mass production, the price of a single sensor may be as low as 20 cents. The production of the sensor is based on 65 nm CMOS process. Related reading: Sensitive microelectronics launch ultra-small MEMS force sensor product line Toshiba sensor business 15.5 billion US dollars selling Sony Placemeter sensor helps merchant statistics pedestrian and traffic, etc. Flat camera flatcam after research and development iPhone does not conveys

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