Control and/or monitoring device using an electronic label, a reader and a state encoder
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Abstract
The invention concerns a control and/or monitoring device comprising pairs (P,P′) of interactive members (1, 2; 1′, 2′) each of which includes an electronic label (1, 1′) identified by a specific identification code (KID1, KID1′) and a reader (2, 2′) communicating with said label (1, 1′). For each pair (P) of interactive members, the inventive device also comprises a state encoder at least partially borne by the label (1), said encoder producing a state signal which is accessible to the reader (2) and representing a logic or analog state affecting the label (1) or a relationship between the label (1) and the reader (2).
14 Citations
29 Claims
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1-15. -15. (canceled)
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16. A control and/or monitoring device, comprising:
at least a first pair of interactive elements including an electronic label and an electronic tag reader in mutual communication by respective radio aerials, the reader being operative to electro-magnetically feed the electronic label with electrical energy, the electronic label having a memory containing an identification code that is specific to the label and that the label selectively transmits to the reader; and
a state encoder operative to produce a status signal representative of a logical or analogical state affecting the elements of the first pair of interactive elements, the state encoder including at least a permanent magnet carried by the electronic label and a magnetic field sensor carried by the reader.- View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
Specification