Abstract: The invention relates to a device (1) for determining a filling level of a liquid (F) in a container (B), comprising a submersible unit (2) having a pressure sensor unit (3) and a transmitter unit (14) configured as a radio transmitter unit, an ultrasonic transmitter unit or a light signal transmitter unit, and a float unit (5) having a further pressure sensor unit (6) and a further transmitter unit (15) configured as a radio transmitter unit, wherein the further pressure sensor unit (6) is arranged at or in a floating body (7) of the float unit (5) in such a manner that, if the float unit (5) is arranged in the liquid (F) for which the device (1) is intended to determine the filling level, the further pressure sensor unit (6) is arranged below the surface (O) of the liquid (F).

Abstract: The present disclosure relates to an arrangement (6) for controlling an entrance hole (2) of a beehive (1) of a beehive with bees, comprising a closure element (11) for at least partially closing the entrance hole (2). According to the present disclosure, the arrangement (6) comprises at least one identification unit (5) arrangeable or arranged on a queen bee (4), a reading unit (7) for reading out the at least one identification unit (5), wherein the reading unit (7) or at least one antenna unit (8) of the reading unit (7) is arrangeable or arranged at the entrance hole (2), and an actuation unit (12), in particular coupled with the reading unit (7), for actuating the closure element (11). Moreover, the present disclosure relates to a method for controlling an entrance hole (2) of a beehive (1).

Abstract: A sensor assembly for determining vibrations of a measurement object, which sensor assembly is or can be fastened to the measurement object in a bonded, form-closed, and/or force-closed manner, an RFID transponder and an acceleration sensor unit coupled to the RFID transponder, wherein sensor data of the acceleration sensor unit are to be sent by means of the RFID transponder. Also disclosed is a device for determining vibrations of a measurement object, to a measurement object having at least one sensor assembly, and to a method for determining vibrations of a measurement object.

Abstract: A closing unit, closing apparatus, and method for locking and/or unlocking a lock is provided. The closing unit can include an actuator for moving or for blocking and releasing a locking and unlocking unit of the lock, an electrical energy supply arrangement, a switch between the electrical energy supply arrangement and the actuator, an encryption/decryption unit, a key memory, as well as a passive RFID basic circuit having an antenna, where at least the actuator, the switch between the electrical energy supply arrangement and the actuator, the encryption/decryption unit, and the key memory are disposed in a housing that cannot be opened without destroying it.

Abstract: A closing unit, closing apparatus, and method for locking and/or unlocking a lock is provided. The closing unit can include an actuator for moving or for blocking and releasing a locking and unlocking unit of the lock, an electrical energy supply arrangement, a switch between the electrical energy supply arrangement and the actuator, an encryption/decryption unit, a key memory, as well as a passive RFID basic circuit having an antenna, where at least the actuator, the switch between the electrical energy supply arrangement and the actuator, the encryption/decryption unit, and the key memory are disposed in a housing that cannot be opened without destroying it.

Abstract: A receptacle for mounting data carriers or code carriers which are inductively and/or electromagnetically read and/or written and which are to be embedded flush in a metallic environment requires a minimum of discrete members and simultaneously ensures an effective energy transfer from a sender coil to the data carrier or code carrier. A prefabricated receptacle adapted to a geometry of a mounting recess in the metallic object, the receptacle is made of an injection molding and/or casting material to which materials are added to set the relative magnetic permeability .mu..sub.r of the receptacle to at least 2 or greater and its specific ohmic resistance sufficiently high (>.OMEGA..multidot.m), the receptacle entirely encases the data carrier or the code carrier and further components, if any.

Abstract: A process is disclosed for transmitting serial data structures for information carrier identification systems (RF-ID systems), a transmission system working according to this process and an information carrier for contactless, electromagnetic transmission of serial data structures. The identification system has an interface (antenna) and an information carrier (transponder). The transmission process is essentially characterized in that a time-parallel data transmission and comparison between the data emitted by the interface and the data immediately sent back by the information carrier is carried out. The information data carrier has as essential components two appropriately sizeable receiving and emitting inductances and a multiplexer that is connected with a demodulator, a control logic and a non-volatile memory.