Individual electronic dosimetry installation

Claim 2

An individual electronic dosimetry system designed for surveillance of the radiation does absorbed by an individual carrying an electronic dosimeter while located in a specified zone to be monitored, said system comprising: at least one individual portable dosimeter including a first sub-assembly for measuring the amount of radiation received by the portable dosimeter and generating corresponding measuring data and for generating identification data specific to the dosimeter, and a second sub-assembly for performing data transmissions and/or exchanges of the measuring and identification data between the first sub-assembly and at least one electronic reading device placed at an access point to the zone to be monitored; wherein the electronic reading device includes means for processing the measuring and identification data which is transmitted to it by the dosimeter, and means for transmitting to the dosimeter a proximity signal that triggers the second sub-assembly to transmit the measuring and identification data to the electronic reading device by carrier wave.

Claim 3

The individual dosimeter system according to claim 1, wherein the second sub-assembly comprises a receiver for demodulating data transmitting by the electronic reading device to enable an almost instantaneous exchange of data and/or instruction between the electronic reading device and the first sub-assembly.

Claim 4

The individual dosimeter system according to claim 1, wherein an additional reading device is provided at each access point to a particular room within the zone to be monitored.

Claim 5

The individual dosimeter system according to claim 1, wherein the reading device is connected by a computer link to a central device located outside of the zone to be monitored.

Claim 6

The individual dosimeter system according to claim 1, wherein the carrier waves used by the electronic reading device are radioelectric waves.

Claim 7

An individual electronic dosimetry system for surveying a radiation dose absorbed by a person carrying a portable individual dosimeter while in a specific zone to be monitored, said system comprising: a portable dosimeter comprising a measuring and identification sub-assembly, including a radiation detector connected to a microprocessor, for counting pulses corresponding to a received radiation dose; a radioelectric transmission sub-assembly, including a receiver and a transmitter, for performing data transmissions between the measuring and identification sub-assembly and at least one electronic reading device located at an access point to the zone to be monitored; a first antenna coupled to the receiver of the radioelectric transmission sub-assembly; and a second antenna coupled to the transmitter of the radioelectric transmission sub-assembly; wherein the electronic reading device includes a transmitter/receiver sub-assembly coupled to a third antenna that transmits information to the first antenna and receives information from the second antenna through the third antenna; wherein the dosimeter includes a first electrical link, coupled to the receiver and the microprocessor, for sending a control signal transmitted by the electronic reading device and received by the receiver to the microprocessor; and a second electrical link, coupled to the microprocessor and the transmitter, for sending measuring and identification data contained in the microprocessor to the transmitter when the microprocessor receives the control signal.

Claim 8

An individual electronic dosimetry system for surveying a radiation dose absorbed by a person carrying a portable individual dosimeter while in a specific zone to be monitored, said system comprising: a portable dosimeter comprising a measuring and identification sub-assembly, including a radiation detector connected to a microprocessor, for counting pulses corresponding to a received radiation dose; a radioelectric transmission sub-assembly, including a receiver and a transmitter, for performing data transmissions between the measuring and identification sub-assembly and at least one electronic reading device located at an access point to the zone to be monitored; a first antenna coupled to the receiver of the radioelectric transmission sub-assembly; and a second antenna coupled to the transmitter of the radioelectric transmission sub-assembly; wherein the electronic reading device includes a transmitter/receiver sub-assembly coupled to a third antenna that transmits information to the first antenna and receives information from the second antenna through the third antenna; wherein the dosimeter includes a first electrical link, coupled to the receiver and the microprocessor, for sending a control signal transmitted by the electronic reading device and received by the receiver to the microprocessor; and a second electrical link, coupled to the microprocessor and the transmitter, for sending measuring and identification data contained in the microprocessor to the transmitter when the microprocessor receives the control signal.

Claim 9

An individual electronic dosimetry system as claimed in claim 6, wherein the receiver of the radioelectric transmission sub-assembly includes a demodulator.

Claim 10

An individual electronic dosimetry system as claimed in claim 6, wherein a frequency divider device is inserted between the receiver and the transmitter of the radioelectric transmission sub-assembly.

Claim 11

An individual electronic dosimetry system as claimed in claim 6, wherein said electronic reading device is connected by a bus to a central processing circuit located outside of the zone to be monitored.