Method, system and apparatus for providing an electronic signal for the surveillance and testing of geiger-muller radiation sensors

Patent metadata

Field	Value
Publication number	US-2016377739-A1
Application number	US-201514750169-A
Country	US
Kind code	A1
Filing date	Jun 25, 2015
Priority date	Jun 25, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

A method, system and/or apparatus for remotely monitoring the operation of a radiation sensor may include a radiation sensor configured to detect a presence of radiation in the area, the radiation sensor including a Geiger-Muller tube, a test signal generator configured to generate a high frequency test signal used to test the radiation sensor, the high frequency test signal transmitted to the radiation sensor, and a test signal detector configured to detect a response of the radiation sensor to the test signal, and determine whether the radiation sensor is operating correctly.

First claim

What is claimed:

1 . A system for remotely monitoring the operation of a radiation sensor, comprising:
a radiation sensor configured to detect a presence of radiation in the area, the radiation sensor including a Geiger-Muller tube; a test signal generator configured to generate a high frequency test signal used to test the radiation sensor, the high frequency test signal transmitted to the radiation sensor; and a test signal detector configured to detect a response of the radiation sensor to the test signal, and determine whether the radiation sensor is operating correctly.

2 . The system of claim 1 , wherein the test signal detector is configured to output an operational signal indicating that the radiation sensor is operating correctly if the response of the radiation sensor corresponds to amplitude and frequency of the high frequency test signal.

3 . The system of claim 1 , wherein the test signal detector is configured to output an operational signal indicating that the radiation sensor is operating incorrectly if the response of the radiation sensor does not correspond to amplitude and frequency of the high frequency test signal.

4 . The system of claim 1 , wherein the test signal detector is configured to output an operational signal indicating that the Geiger-Muller tube is leaking gas if amplitude of the response of the radiation sensor is lower than amplitude of the high frequency test signal.

5 . The system of claim 1 , wherein the test signal detector is configured to output an operational signal indicating that the anode or cathode of the Geiger-Muller tube is damaged if amplitude of the response of the radiation sensor is higher or lower than amplitude of the high frequency test signal.

6 . The system of claim 1 , wherein the test signal detector is configured to output an operational signal indicating damage to electrical wiring of the system has occurred if the test signal detector detects no response from the radiation sensor.

7 . The system of claim 1 , wherein the high frequency test signal frequency is equal to or greater than 20 KHz.

8 . The system of claim 1 , wherein the test signal generator and test signal detector are connected to the radiation sensor.

9 . The system of claim 1 , wherein the test signal generator and test signal detector are connected to a surveillance monitor, the surveillance monitor including a display.

10 . A method of remotely monitoring the operation of a radiation sensor, comprising:
generating a high frequency test signal to test a radiation sensor configured to detect the presence of radiation, the radiation sensor including a Geiger-Muller tube; transmitting the high frequency test signal; detecting a response of the radiation sensor to the test signal; and determining whether the radiation sensor is operating correctly based on the response of the radiation sensor to the test signal.

11 . The method of claim 10 , further comprising:
outputting an operational signal indicating that the radiation sensor is operating correctly if the response of the radiation sensor corresponds to amplitude and frequency of the high frequency test signal.

12 . The method of claim 10 , further comprising:
outputting an operational signal indicating that the radiation sensor is operating incorrectly if the response of the radiation sensor does not correspond to amplitude and frequency of the high frequency test signal.

13 . The method of claim 10 , further comprising:
outputting an operational signal indicating that the Geiger-Muller tube is leaking gas if amplitude of the response of the radiation sensor is lower than amplitude of the high frequency test signal.

14 . The method of claim 10 , further comprising:
outputting an operational signal indicating that the anode or cathode of the Geiger-Muller tube is damaged if amplitude of the response of the radiation sensor is higher or lower than amplitude of the high frequency test signal.

15 . The method of claim 10 , further comprising:
outputting an operational signal indicating that damage to electrical wiring of the system occurred if the test signal detector detects no response from the radiation sensor.

16 . The method of claim 10 , wherein the generating includes the high frequency test signal frequency is equal to or greater than 20 KHz.

17 . An apparatus for monitoring the operation of a radiation sensor, comprising:
a test signal generator configured to generate a high frequency test signal used to test the radiation sensor, the high frequency test signal transmitted to the radiation sensor; and a test signal detector configured to detect a response of the radiation sensor to the test signal, and determine whether the radiation sensor is operating correctly.

18 . The apparatus of claim 17 , further comprising:
a first cable connecting the test signal generator and the test signal detector to the radiation sensor, the radiation sensor including a Geiger-Muller tube; a second cable connecting the test signal generator and the test signal detector to the surveillance monitor, the surveillance monitor including a display; and wherein the high frequency test signal is transmitted from the test signal generator to the radiation sensor via the first cable.

19 . The apparatus of claim 17 , wherein the test signal generator and the test signal detector are attached to the surveillance monitor.

20 . The apparatus of claim 17 , wherein the test signal generator and the test signal detector are attached to the radiation sensor.

Assignees

• Droba Gregory S
• Meek Oscar L
• Ge Hitachi Nuclear Energy Americas Llc

Inventors

• Droba Gregory S
• Meek Oscar L

Classifications

• G01T1/18 Primary

  with counting-tube arrangements, e.g. with Geiger counters (tubes H01J47/08; {with alarm provision G01T7/125}) · CPC title

• G01M3/40

  by using electric means, e.g. by observing electric discharges · CPC title

• H01J47/08

  Geiger-Müller counter tubes {(gas filling with very short deionisation times H01J17/64, H01T)} · CPC title

• G01T7/125

  Alarm- or controlling circuits using ionisation chambers, proportional counters or Geiger-Mueller tubes, also functioning as UV detectors (measuring radiation intensity with counting tubes G01T1/18; measuring radiation intensity with ionisation chambers G01T1/185; flame monitoring in combustion devices F23Q7/00, F23N; fire alarms actuated by presence of radiation of particles, e.g. of infrared radiation, of ions G08B17/11; discharge tubes per se H01J47/00) · CPC title