Radiation protection integrated monitoring system

• US 6,633,327 B1
• Filed: 09/10/1998
• Issued: 10/14/2003
• Est. Priority Date: 09/10/1998
• Status: Expired due to Fees

• Current Assignee: Framatome ANP, Inc. (AES Corporation)
• Original Assignee: Framatome ANP, Inc. (AES Corporation)
• Inventors: Wilson, Scot Rodney, Maunz, Clifford John, Williams, Don Ronald, Burk, Gerald Stewart
• Primary Examiner(s): Philippe, Gims S.
• Application Number:
  US09/151,009
• Time in Patent Office: 1,860 Days
• Field of Search: 348/82, 348/83, 348/81, 348/84, 348/85, 348/86, 348/90, 348/61, 348/169, 348/197, 348/159, 382/144, 382/145-151, 382/141, 345/435, 250/473, 250/363.1, 250/253, 356/121, 356/620, 700/83, 700/282, 374/124, 359/137, 434/262, 340/573.1, 340/539
• US Class Current: 348/82
• CPC Class Codes: H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

An environmental monitoring system for a hazardous work area, such as a nuclear power plant, which monitors the radiation exposure of personnel working in the nuclear power plant and overlays a visual representation of the exposure data onto a video display of the location the personnel are working in. The apparatus includes a video source, such as a plurality of PTZ cameras, for providing video image signals of the work area. In the preferred embodiment, individual radiation exposure sensors provide signals representative of the radiation received by each worker in the work area. A computer, outside of the work area, is connected to the sensors for converting the sensor signals to a visual video representation of the sensor measurements. A gen/lock overlay unit is connected to the computer for combining the video image signals and the visual video representation of the sensor measurements wherein the visual video representations are overlaid onto the video images of the work area. In the preferred embodiment, a remote relay unit first receives the video image signals and the sensor signals adjacent to the work area and relays the video image signals and the sensor signals to the computer and the gen/lock overlay unit outside the work area through a fiber optic cable.

Claims

1. An environmental monitoring system for monitoring workers in a hazardous work area, said apparatus comprising:

(a) a video source for providing a video image signal of said workers in the work area;

(b) individual sensors for said workers in the work area remote from said video source for providing a signal representative of a measurement of at least one predetermined parameter for said workers in the work area;

(c) a gen/lock overlay unit connected to said video source and said individual sensors for converting said sensor signal from said individual sensors to a visual video representation of said sensor measurement and for combining said video image signal and said visual video representation, wherein said visual video representation is overlaid onto said video image of the work area; and

(d) a video display connected to said gen/lock overlay unit for displaying said visual video representation overlaid onto said video image of the work area.

2. The apparatus according to claim 1, further including a remote relay unit for receiving said video image signal and said sensor signal adjacent to the work area and relaying said video image signal and said sensor signal to said gen/lock overlay unit outside the work area.

3. The apparatus according to claim 2, wherein said remote relay unit includes at least one electo-optical transmitter for receiving said video image signal and converting said video image signal to an optical video image signal;

at least one electro-optical transceiver for receiving said sensor signal and converting said sensor signal to an optical sensor signal; and

a fiber optical cable connected between said remote relay unit and said gen/lock overlay unit for transmitting said optical video image signal and said optical sensor signal from said remote relay unit to said gen/lock overlay unit.

4. The apparatus according to claim 3, further including a fiber optic coupler connected between said electro-optical transceivers and said fiber optical cable for combining said optical video image signal and said optical sensor signal into a multiplexed optical video image and sensor signal.

5. The apparatus according to claim 4, wherein said fiber optic coupler is a wave division multiplier.

6. The apparatus according to claim 4, further including a fiber optic decoupler connected between said fiber optical cable and said gen/lock overlay unit for separating said multiplexed optical video image and sensor signal back into an optical video image signal and an optical sensor signal.

7. The apparatus according to claim 1, wherein said video source is at least one video camera.

8. The apparatus according to claim 7, wherein said video camera is a remotely controlled PTZ camera.

9. The apparatus according to claim 1, wherein said video source is a pre-recorded video for providing a simulated event.

10. The apparatus according to claim 1, wherein said sensor for providing a signal representative of a measurement of at least one predetermined parameter in the work area measures an external parameter in the work area.

11. The apparatus according to claim 10, wherein said sensor is a personnel radiation monitor.

12. The apparatus according to claim 11, wherein said radiation monitor is wireless.

13. The apparatus according to claim 1, wherein said sensor for providing a signal representative of a measurement of at least one predetermined parameter in the work area measures an internal parameter in the work area.

14. The apparatus according to claim 13, wherein said sensor is a personnel heart rate monitor.

15. The apparatus according to claim 1, wherein said sensor for providing a signal representative of a measurement of at least one predetermined parameter in the work area is a bi-directional sensor.

16. A video overlay unit for an environmental monitoring system for monitoring workers in a hazardous work area having a video source for providing a video image signal of said workers in the work area and individual sensors for said workers in the work area remote from said video source for providing a signal representative of a measurement of at least one predetermined parameter for said workers in the work area, said apparatus comprising:

(a) a computer connected to said individual sensors for converting said signal from said individual sensors to a visual video representation of said sensor measurement;

(b) a gen/lock overlay unit connected to said computer for combining said video image signal and said visual video representation of said sensor measurement, wherein said visual video representation is overlaid onto said video image of the work area;

(c) a screen splitter connected between said computer and said gen/lock overlay unit for splitting the visual representation signal into a graphical user interface signal and a data overlay signal; and

(d) a video display connected to said gen/lock overlay unit for displaying said visual video representation overlaid onto said video image of the work area.

17. The apparatus according to claim 16, wherein said video source includes a video multiplexer for providing video input from a plurality of video sources.

18. The apparatus according to claim 16, wherein said visual video representation is an S-video signal.

19. The apparatus according to claim 16, wherein said visual video representation is selected from the group consisting of text, graphs and colors.

20. An environmental monitoring system for monitoring workers in a hazardous work area, said apparatus comprising:

(a) a video source for providing a video image signal of said workers in the work area;

(b) individual sensors for said workers in the work area remote from said video source for providing a signal representative of a measurement of at least one predetermined parameter for said workers in the work area;

(c) a computer connected to said individual sensors for converting said sensor signal from said individual sensors to a visual video representation of said sensor measurement;

(d) a gen/lock overlay unit connected to said computer for combining said video image signal and said visual video representation of said sensor measurement, wherein said visual video representation is overlaid onto said video image of the work area;

(e) a remote relay unit for receiving said video image signal and said sensor signal adjacent to the work area and relaying said video image signal and said sensor signal to said computer and said gen/lock overlay unit outside the work area;

(f) a screen splitter connected between said computer and said gen/lock overlay unit for splitting the visual representation signal into a graphical user interface signal and a data overlay signal; and

(g) a video display connected to said gen/lock overlay unit for displaying said visual video representation overlaid onto said video image of the work area.

21. The apparatus according to claim 20, wherein said remote relay unit includes at least one electo-optical transmitter for receiving said video image signal and converting said video image signal to an optical video image signal;

at least one electro-optical transceiver for receiving said sensor signal and converting said sensor signal to an optical sensor signal; and

a fiber optical cable connected between said remote relay unit and said gen/lock overlay unit for transmitting said optical video image signal and said optical sensor signal from said remote relay unit to said gen/lock overlay unit.

22. The apparatus according to claim 21, further including a fiber optic coupler connected between said electro-optical converters and said fiber optical cable for combining said optical video image signal and said optical sensor signal into a multiplexed optical video image and sensor signal.

23. The apparatus according to claim 22, wherein said fiber optic coupler is a wave division multiplier.

24. The apparatus according to claim 22, further including a fiber optic decoupler connected between said fiber optical cable and said gen/lock overlay unit for separating said multiplexed optical video image and sensor signal back into an optical video image signal and an optical sensor signal.

25. The apparatus according to claim 22, wherein said video source is at least one video camera.

26. The apparatus according to claim 25, wherein said video camera is a remotely controlled PTZ camera.

27. The apparatus according to claim 22, wherein said video source is a pre-recorded video for providing a simulated event.

28. The apparatus according to claim 20, wherein said sensor for providing a signal representative of a measurement of at least one predetermined parameter in the work area measures an external parameter in the work area.

29. The apparatus according to claim 28, wherein said sensor is a personnel radiation monitor.

30. The apparatus according to claim 29, wherein said radiation monitor is wireless.

31. The apparatus according to claim 20, wherein said sensor for providing a signal representative of a measurement of at least one predetermined parameter in the work area measures an internal parameter in the work area.

32. The apparatus according to claim 31, wherein said sensor is a personnel heart rate monitor.

33. The apparatus according to claim 20, wherein said sensor for providing a signal representative of a measurement of at least one predetermined parameter in the work area is a bi-directional sensor.

34. The apparatus according to claim 20, wherein said video source includes a video multiplexer for providing video input from a plurality of video sources.

35. The apparatus according to claim 20, wherein said visual video representation is an S-video signal.

36. The apparatus according to claim 20, wherein said visual video representation is selected from the group consisting of text, graphs and colors.