Sensor device for monitoring accelerations of object, has radio-frequency identification transceiver device for contactlessly coupling electricity into sensor and for transmitting radio signals depending on physical conditions of sensor

摘要

The sensor device has an acceleration sensor (2), which is firmly connected with an object (1) to be monitored, such that a relative movement between the acceleration sensor and the object is prevented. A radio-frequency identification (RFID) transceiver device (8) contactlessly couples electricity into the sensor and transmits radio signals depending on physical conditions of the sensor. An electric conductor (7) is connected with the transceiver device, and is irreversibly interrupted, when the displacement of a movable mass (4) exceeds a preset threshold value.