Transponder-based appratus for space-time identification and location
First Claim
1. An apparatus for space-time identification and location comprising a dual-band transponder capable of carrying out the data exchange between a query device and one or more responders, in a wireless two-way communication through two separate channels, named up-link and down-link channels, said responders being located in an appropriate distance range from said interrogator, comprising a starter device, a radio-frequency transceiver device and a timing-transponder device.
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Abstract
The object of the present invention relates to a dual-band transponder-based apparatus for space-time identification and location that carries out the data exchange between a query device and one or more responders, being located within an appropriate distance range from said query device.
18 Citations
23 Claims
- 1. An apparatus for space-time identification and location comprising a dual-band transponder capable of carrying out the data exchange between a query device and one or more responders, in a wireless two-way communication through two separate channels, named up-link and down-link channels, said responders being located in an appropriate distance range from said interrogator, comprising a starter device, a radio-frequency transceiver device and a timing-transponder device.
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21. Method for tracing objects, people or resources comprising the following steps:
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a starter device is associated to each access to a determined region of space to be monitored; a starter device is associated to each exit from a determined region of space to be monitored; a timing-transponder device is associated to each object, person or resource to be monitored within the aforementioned region of space to be monitored; upon access within said region of space to monitor by said timing-transponder devices, said starter activates said timing-transponder devices and programmes them so that these periodically transmit, with a period defined by their internal clock, a predefined code, which may be incremental; said timing-transponder devices continue to transmit said predefined code until they receive an opposite command; said timing-transponders also use their internal clock to synchronise periodic transmissions of their identification code or the acquisition, storage and/or re-transmission of other possible information deriving from sensors integrated on the mobile device, positioned on the object to monitor. Upon exit from said region of space to be monitored by the timing-transponder devices, said starter device positioned at said exit orders a command opposite to that outputted by said first starter positioned at said input to said region of space to be monitored and such that said timing-transponder is re-programmed.
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22. Method of automatic timing, comprising the following steps:
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a timing-transponder device is associated to every object, person or resource, the movements of which are to be timed; said timing-transponder device receives from a starter positioned in an appropriate position, a trigger signal on the up-link channel such that it links said timing-transponder device to the absolute time. As an alternative to the previous step, said timing-transponder device receives the absolute time data on the down-link radio-frequency distance from the radio-frequency transmitter connected in turn to the absolute clock; said starter continuously transmits the coded trigger signal on the up-link channel, which may be a simple reset code or it may contain in turn the reference time data. Said timing-transponder device autonomously measures the deviations (relative or partial times) or the absolute time, and stores the time slots separating several events associated to several starters appropriately distributed or to consecutive transmissions of the same starter. After an appropriate command ordered by a starter, the timing-transponder transmits on the down-link channel the complete or partial contents of its memory associating it to its identification code.
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23. A method for surveilling and registrating the opening and closing of a container, comprising the following steps:
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a timing-transponder device, connected to a break-in proof or anti-tampering sensor, is associated to each container, the movements of which are to be timed; said timing-transponder device receives from a starter positioned in appropriate position, a trigger signal on the up-link channel such that said timing-transponder device is linked to the absolute time. As an alternative to the previous step, said timing-transponder device receives the absolute time data on the down-link radio-frequency distance from the radio-frequency transmitter connected in turn to the absolute clock; said timing-transponders associated to said containers register and temporally mark all of the openings of the access gates of said containers sensed by the break-in proof sensors interfaced to them. Upon appropriate command ordered by a starter, said timing-transponders transmit on the down-link channel the complete or partial contents of their memory associating it to their identification code.
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Specification