A method for determining a definite safe distance between a wirelessly communicating object transponder and at least one anchor gateway in accordance with a two-way ranging method, wherein transmission and reception timestamps are detected for each communication message via the transponder and the at least one anchor gateway, each of the timestamps from the transponder and the at least one anchor gateway together with at least one respective piece of timestamp monitoring information are transmitted to a failsafe computing device, at least one check is implemented via the failsafe computing device, and the definite safe distance is determined via the failsafe computing device aided by the checked timestamps, where timestamp errors occurring during the detection of the timestamps are caused solely by the transponder or alternatively solely the one anchor gateway.

A position detection system includes: a first device that is separate from a moving object, and is provided such that a position of the first device can be specified; and a second device that is mounted on the moving object. One of the first and second devices includes a first signal transmission unit that transmits a first first-signal, the other of the first and second devices includes a first signal reception unit that receives the first first-signal, one of the first and second devices includes a second signal transmission unit that transmits a first second-signal, and the other of the first and second devices includes a second signal reception unit that receives the first second-signal.

A position detection system includes: a first device that is separate from a moving object, and is provided such that a position of the first device can be specified; and a second device that is mounted on the moving object. One of the first and second devices includes a first signal transmission unit that transmits a first first-signal, the other of the first and second devices includes a first signal reception unit that receives the first first-signal, one of the first and second devices includes a second signal transmission unit that transmits a first second-signal, and the other of the first and second devices includes a second signal reception unit that receives the first second-signal.

The present disclosure is related to a method and device for measuring a distance and a storage medium. The method for measuring the distance includes determining a distance between a first device and a second device based on a first time difference and a second time difference, where the first time difference is between a time of receiving a first detection signal by the first device and a time of receiving a second detection signal by the first device, and the second time difference is between a time of receiving the first detection signal by the second device and time of receiving the second detection signal by the second device.

The present disclosure is related to a method and device for measuring a distance and a storage medium. The method for measuring the distance includes determining a distance between a first device and a second device based on a first time difference and a second time difference, where the first time difference is between a time of receiving a first detection signal by the first device and a time of receiving a second detection signal by the first device, and the second time difference is between a time of receiving the first detection signal by the second device and time of receiving the second detection signal by the second device.

A safety system for localizing a person or object has a control and evaluation unit, at least one radio location system, and at least one spatially resolving sensor for the position determination of the person or object. The radio location system has arranged radio stations, wherein at least one radio transponder is arranged at the person or object. Position data and classification data of the person or object can be determined by means of the radio location system. The position data and the classification data can be transmitted from the radio station to the control and evaluation unit and position data and contour data of the person or object can be determined by means of the spatially resolving sensor. The control and evaluation unit is configured to compare the position data of the radio location system and the position data of the spatially resolving sensor.

A method and system for identification of an item is provided, wherein the system comprises includes a conveyor belt, a conveyor belt controller and a reader operable to receive at least one reading from at least one tag attached to the item and extract from the reading a measurement of the phase of the signal transmitted by the tag and received at at least one antenna of the reader, the antenna being adapted to be arranged at a read point along the conveyor belt, wherein the conveyor belt controller is configured to start the conveyor belt at a first time instant, after the item has been placed on the conveyor belt, and to stop the conveyor belt at a second time instant, when the item has passed the antenna of the reader.

A method and system for identification of an item is provided, wherein the system includes a conveyor belt, a positioning device and a reader operable to receive at least one reading at at least one first antenna from at least one tag attached to the item, the first antenna being adapted to be arranged at a read point along the conveyor belt, wherein the positioning device is configured to retrieve a first position of the item at a first time instant before the first antenna and a second position of the item at a second time instant after the first antenna, the first and second time instants defining a time window, wherein the reader is configured to extract from each reading retrieved by the first antenna a measurement (6) of the phase of the signal transmitted by the tag (5) and perform a data processing of the phase measurements whereby the identification of the item (2) is accomplished.

A range between a first wireless device and a second wireless device is estimated using a first mechanism based on messages transmitted over a first communication channel. The first communication channel is associated with a first radio access technology capability of the wireless devices. One or more metrics indicative of an accuracy of the range estimates provided by the first mechanism are obtained. A second mechanism to estimate a range between the first wireless device and the second wireless device may be implemented in favor of the first mechanism when the metric fails to satisfy a criterion. The second mechanism is based on unicast messages transmitted over a second communication channel. The second communication channel is associated with a second radio access technology capability of the wireless devices and may be the same as, or different from, the first communication channel.

A range between a first wireless device and a second wireless device is estimated using a first mechanism based on messages transmitted over a first communication channel. The first communication channel is associated with a first radio access technology capability of the wireless devices. One or more metrics indicative of an accuracy of the range estimates provided by the first mechanism are obtained. A second mechanism to estimate a range between the first wireless device and the second wireless device may be implemented in favor of the first mechanism when the metric fails to satisfy a criterion. The second mechanism is based on unicast messages transmitted over a second communication channel. The second communication channel is associated with a second radio access technology capability of the wireless devices and may be the same as, or different from, the first communication channel.