JP3243336B2 - Radioactive contamination monitor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus (body surface monitor, article carry-out monitor, land re-monitor, etc.) used in a nuclear facility for monitoring radioactive contamination on the body surface and on the surface of articles and clothes. .

[0002]

2. Description of the Related Art Radioactive contamination monitors are used to determine the presence or absence of contamination of workers, articles, clothes, etc. in nuclear facilities.

[0003] Generally, when the object to be measured is a person, a structure (body surface monitor) in which a plurality of radiation detectors are arranged inside a telephone-box-like monitor main body for measurement is used. In the case of clothes, the structure is such that a radiation detector is arranged and measured in the middle of the measurement object transfer device (article transfer monitor, landry monitor, etc.). In both systems, the equipment is large-scale and automation (data processing and mechanism) is advanced, so that the operation for measurement and the maintenance / inspection operation are complicated.

As shown in FIG. 6, a conventional body surface monitor includes a plurality of radiation detectors 1a... 1n and a screen display 2 for displaying information necessary for measurement and information required for maintenance. And a setting operation unit 4 provided with setting knobs and indicators for mode setting by maintenance personnel, and data processing for displaying contents according to the mode (measurement mode, maintenance mode) set by the setting operation unit 4 Part 5 was provided.

[0005]

The method of switching with the setting operation unit 4 each time measurement and maintenance are required, as in the conventional body surface monitor, is not only troublesome in that a setting operation is required every time. In many cases, the operator forgot to return to the measurement mode after maintenance work.

Accordingly, an object of the present invention is to provide a radioactive contamination monitor which eliminates the above-mentioned disadvantages by a simple improvement of a display method and a display device.

[0007]

SUMMARY OF THE INVENTION A radioactive contamination monitor according to the present invention comprises a radiation detector for detecting radiation from a contaminated site.
And output device, contamination determines data from the output of the radiation detector
Measurement operation in a radioactive contamination monitor equipped with a
Cut out information necessary for operation or maintenance.
Screen display that can be replaced and displayed, and display of this screen display
The surface can be rotated from the measurement operation position to the maintenance position
And a display surface position of the screen display.
And position detecting means for detecting the location, detected by the position detecting means
The information corresponding to the displayed display surface position is displayed on the screen display.
And a data processing unit for causing the data processing unit to perform the processing.

[0008]

In the radioactive contamination monitor of the present invention, the contents to be displayed are determined by the position of the display surface of the screen display, and information for measurement operation (instruction of operation procedure, instruction of treatment when contamination occurs, etc.) and maintenance are performed. Information (radiation contamination control level, measurement time, calibration constant, cause of abnormality, etc.) is displayed in association with the display surface position. The monitor performs a corresponding operation depending on whether the display surface position of the screen display is set to the measurement mode or the maintenance mode.

When the measurement mode is set, the display contents and the monitor operation display necessary information at the time of measurement and perform the operation necessary for the measurement, so that the display contents and the monitor operation are the same as when a dedicated display device is installed. Measurements can be made,
When the maintenance mode is set, the display contents and monitor operation display the information necessary for maintenance and perform the operations required for maintenance. Therefore, maintenance is performed in the same way as when a dedicated display device is installed. be able to.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.

1 (a), 1 (b), 1 (c) and 1 (d) show a radioactive contamination monitor according to an embodiment of the present invention. This radioactive contamination monitor is an example of a body surface monitor.

As shown in FIG. 1A, a plurality of radiation detectors 1 for detecting radiation from a contaminated site on a body surface are provided inside a monitor body 10 having a shape like a telephone box.
a... 1n, measurement start switches 6a, 6 for starting measurement by inserting a hand into the hand detection unit by the measurement operator 20
b, etc., and further, at the right front of the measurement operator 20, a measurement operation position 2a with the display surface facing the measurement operator.
A screen display 2 is provided which can change the display surface position to a maintenance position 2b in which the display surface is turned outward by 90 degrees from this position and the display surface is directed outward through the window of the monitor body 10. Have been. The setting operation unit 4 is installed on the outer surface of the monitor main body 10 at a position on the right side of the screen display 2 located at the maintenance position 2b, and is operated by the maintenance operator 21.

As shown in FIG. 1B, the screen display 2 is rotatable by 90 degrees by a display surface position moving section 3 having a hinge structure, and as shown in FIGS. 1B and 1C. The display surface position moving unit 3 is provided with a lever 8 and a position detection switch 7 for detecting the lever position, and detects the display surface position.

The data processing unit 5 causes the screen display 2 to perform a measurement display operation and a display operation required for maintenance in a process as shown in FIG.

In the radioactive contamination monitor of one embodiment of the present invention configured as described above, as shown in FIGS. 1A and 1B, the display surface position of the screen display 2 is set to the measurement operation position 2a. The setting can be manually changed to any one of the maintenance positions 2b. The position detection switch 7 detects the position of the lever 8 by detecting the position of the lever 8, and the data processing unit 5 changes the display content of the screen display 2 to the content corresponding to the display surface position based on the determination result. Display. At the same time, the monitor performs an operation corresponding to the display contents.

The screen display 2 has characters, pictures, and the like on a display screen, such as a color liquid crystal display (a CRT display is also possible).
Symbols can be displayed, and FIGS. 2 (a), (b), (c),
The information required for the measurement as shown in FIG.
Information necessary for maintenance as shown in (b), (c), and (d) is displayed.

According to the radioactive contamination monitor of this embodiment,
Compared to the conventional method of switching by the measurement operation unit every time it is necessary, the display surface position of the screen display 2 is simply moved to any one of the measurement operation display surface position 2a and the maintenance display surface position 2b. Since the display and the monitor operation corresponding to the position are performed, the troublesome operation is eliminated.

Next, another embodiment of the present invention will be described.

FIGS. 4A and 4B show a main part of a radioactive contamination monitor according to another embodiment of the present invention. As shown in FIG. 4A, the display surface position moving unit 23 is automatically operated by the display drive unit 22 and the drive control unit 21. When the mode change setting is performed by the setting operation unit 4, the data processing unit 5 determines whether or not the mode set in the process shown in FIG. , The display contents are maintained as they are, and when there is a change, the drive control unit 21 is instructed to perform the control corresponding to the setting mode, and the drive control unit 21 controls the display surface position corresponding to the setting mode. The display driver 2 is caused to execute the operation of moving the screen display 2 to the display device. At the same time, the display content is also switched to the content according to the setting mode.

In the radioactive contamination monitor of this embodiment, when the apparatus is left in the maintenance mode, the mode may be switched to the measurement mode by a timer circuit after a lapse of a predetermined time.

Although the embodiment of FIGS. 1 and 4 has been described by exemplifying the case of a body surface monitor, the present invention is not limited to the embodiment shown in FIGS.
The present invention can be similarly applied to an article transport monitor and a landry monitor shown in FIG. In the figure, reference numeral 20 denotes a measurement operator, 30 denotes a measurement target, and 31 denotes a measurement target transport device.

[0022]

As described above in detail, according to the present invention, one screen display capable of displaying information required for measurement operation and information required for maintenance, and the display surface of this screen display is measured. A display surface position moving unit configured to move the measurement operation display surface position facing the operator and the display surface to a maintenance display surface position facing the outside by changing the position by 90 degrees and a display on the screen display By providing a position detection means for detecting a surface position, by realizing a radioactive contamination monitor characterized by performing a required screen display at that position based on the display surface position detected by the position detection means, Compared to the conventional method of switching by the measurement operation unit each time it is necessary, simply move the display surface position of the screen display to the required position of the measurement operation display surface position or the maintenance display surface position.
Since the screen display and the monitor operation corresponding to the position are performed, the troublesome operation is eliminated.

[Brief description of the drawings]

1 (a), 1 (b), 1 (c), and 1 (d) show a radioactive contamination monitor according to one embodiment of the present invention, and FIG. 1 (a) is a plan view showing the monitor without a ceiling plate. FIG. 1B is a plan view showing a screen display and a display surface position moving unit.
FIG. 1C is an elevational view showing the position detecting means of the display surface position moving unit in FIG. 1B, and FIG. 1D is an operation flowchart of FIG. 1B.

2 (a), 2 (b), 2 (c) and 2 (d) are diagrams showing examples of display screens at the time of measurement by the screen display of FIG.

3 (a), 3 (b), 3 (c), and 3 (d) are views showing examples of display screens at the time of maintenance of the screen display of FIG.

4A and 4B show a radioactive contamination monitor according to another embodiment of the present invention, and FIG. 4A is a plan view showing a screen display and an automatic display surface position moving unit. FIG. 4B is an operation flowchart of FIG.

5 (a) and 5 (b) show an article transport monitor according to another embodiment of the present invention, and FIG. 5 (a) is a plan view and FIG.
(B) is an elevation view.

FIG. 6 is a block diagram showing a configuration of a conventional body surface monitor.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 radiation detector 2 screen display 3 display screen position moving unit 4 setting operation unit 5 data processing unit 7 position detection switch 8 lever 10 monitor body 21 drive control unit 22 display drive unit 23: display surface position moving unit 30: measuring object 31: measuring object conveying device

Claims (1)

(57) [Claims] 1. Detecting radiation from a contaminated site
A radiation detector, contamination determined from the output of the radiation detector
Radioactive contamination monitor equipped with a
Information necessary for the measurement operation or maintenance
A screen display that can switch and display information and this screen
Turn the display surface of the indicator from the measurement operation position to the maintenance position.
A display surface position moving unit capable of rolling and the screen display
A position detecting means for detecting a display surface position, the position detection
Information corresponding to the display surface position detected by the
A data processing section for displaying on the indicator.
Radioactive contamination monitor.