SENSOR TAG AND SENSOR NETWORK SYSTEM

摘要

A sensor tag includes a sensor, a resistor, an radio frequency integrated circuit (“RFIC”), a battery and a micro-control unit (“MCU”). The sensor detects an environmental state. The battery is connected to a series circuit, which includes the sensor and the resistor, and to the RFIC and the MCU. The MCU detects a voltage across the two ends of the resistor, detects a current flowing from the battery to the sensor, transmits information relating to the current to a tag reader and causes information relating to a remaining battery amount of the battery to be displayed on the tag reader.

主权项

1. A sensor tag comprising:
a sensor configured to detect data relating to an environmental state of the sensor tag; a communication unit configured to transmit environment information based on the data detected by the sensor; a battery coupled to the sensor and the communication unit; and a control unit that controls transmission of the environment information by the communication unit.