Safety or control system and a method for a radio communication among a plurality of transceivers of such system

Abstract

The invention relates to safety or control systems for a plurality of sensors. In particular, the invention relates to networks for transmitting measured parameters, control or similar signals by modeling signals at carrier frequencies using a wireless electric communication, preferably, using a radio communication. A method for a radio communication among a plurality of transceivers of a safety or control system comprises broadcasting a radio signal, which comprises at least a preamble and a packet body, and searching for the preamble through a plurality of antennas k1 of one transceiver with an alternate periodical linking of each antenna to search for the preamble followed by evaluating a quality of the radio signal as compared to a given level of the radio signal upon receipt of the preamble and selecting an antenna having a maximum level of the radio signal, through which a synchronization of the transceivers is started to receive the packet body. Therewith, during the broadcasting of the radio signal, a radio frequency is periodically switched among a set of given radio frequencies k2, while during the alternate periodical linking of each antenna to search for the preamble, the radio frequency is periodically switched among the radio frequencies from the set of given radio frequencies k2 for the linked antenna, wherein a minimum duration of the preamble for the broadcasting of the radio signal is determined by a ratio T1=(k1+k2) T, where T1 is a duration of the preamble broadcasting in msec, T is a duration of linking of one antenna of the transceiver at a single radio frequency in msec, wherein upon receipt of the preamble during selecting of the antenna having the maximum level of the radio signal, a frequency, at which the preamble has been received, is assigned as a reference (carrier) frequency followed by synchronization of the transceivers through the selected antenna and the reference frequency. Also, a safety or control system, wherein the described method is implemented, is claimed.

Dependencies are inferred from the claim text.