Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1991-11-14
1993-08-10
Ng, Jin F.
Communications: electrical
Condition responsive indicating system
With particular system function
340539, 340572, 340573, 34082531, 2503361, G08B 2600
Patent
active
052353184
ABSTRACT:
The installation is designed for automatic surveillance of the radiation dose absorbed by an individual carrying a dosimeter during his stay in a specific zone. Each access point to this zone comprises a reader able to transmit a radioelectric wave carrying a proximity signal and possibly other data to the dosimeter. This signal is received by the dosimeter, and the latter retransmits a wave carrying measuring and identification data, and so on, to the reader.
REFERENCES:
patent: 4284892 (1981-08-01), Hulot et al.
patent: 4489315 (1984-12-01), Falk et al.
patent: 4598275 (1986-07-01), Ross et al.
patent: 4614945 (1986-09-01), Brunius et al.
patent: 4822990 (1989-04-01), Tamada et al.
Gerin Merlin
Lefkowitz Edward
Ng Jin F.
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