JPH05119156A - Gate monitor foot detection position guiding floor - Google Patents

Abstract

PURPOSE:To make a person stand correctly at a detection position to improve efficiency of inspection by providing a standing plane at the bottom of slant surface provided with a plurality of protrusions which can be sensed by soles of feet at the foot set position on the upper face of this monitor. CONSTITUTION:In a gate monitor for detecting radioactive contamination on a body surface of a person in atomic facility, a standing base 14 consisting of a grid 13 placed on upper faces of two radiation detectors 21, 21 is provided. An entrance floor 11 and an exit floor 12 have their bottoms gradient so that the standing base 14 is the bottom. Further, at a foot set position where feet are to be placed on the standing base 14, a plurality of protrusions which can be sensed by soles of feet are provided on an upper face of the grid 13 in an area corresponding to right and left soles. Since the entrance floor 11 is gradient downward to the standing base 14, a subject can be guided to the standing base 14 at the bottom. On the grid 13 of the standing base 14, the subject can know the foot set position by senses of the soles to the plurality of protrusions 15, whereby the subject can stand at a proper detection position with his/her feet positioned in place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate monitor for detecting radiation contamination on a human body surface in a nuclear facility.

[0002]

2. Description of the Related Art As shown in FIGS. 5 (a) and 5 (b), a conventional foot monitor of a conventional gate monitor faces the upper surfaces of two radiation detectors 21 and 21 arranged side by side. A standing stand 4 composed of a lattice 3 installed with a gap is provided, and an entrance floor 1 and an exit floor 2 connected to the stand 4 are horizontal surfaces. The subject stands with his / her feet on the lattice 3 of the stand 4.
Undergo an inspection. At this time, the photoelectric switch 5 detects whether the sole of the foot is within the range so that the sole of the foot is located on the detection surface of the radiation detectors 21 and 21, and if not, corrects the position by voice. I was instructing to do so.

[0003]

In the conventional sole detection section of the gate monitor, it is difficult to determine the installation position of the sole of the foot and it is difficult to determine the installation position of the sole, and the detection position of the photoelectric switch 5 is invisible. It is difficult to know the proper range to put,
A beginner who is not accustomed to this test has a problem that it is not clear whether or not the foot is placed on the lattice 3.

Therefore, the present invention provides a gate monitor foot detection position guide floor which allows a subject to stand on his or her feet at a proper detection position by being guided to a stand by the sensation of walking through the foot. Aim to achieve.

[0005]

SUMMARY OF THE INVENTION The gate monitor foot detection position guiding floor of the present invention has an entrance and a floor so that an upright stand composed of a lattice facing the upper surface of the radiation detector and having a gap therebetween serves as the bottom. The floor from the exit to the standing stand is an inclined surface, and at the foot setting position on the standing stand where the feet should be placed, a plurality of protrusions that can be perceived by the soles on the upper surface of the lattice in a range corresponding to the left and right soles. Alternatively, one of the depressions is provided.

[0006]

In the gate monitor foot detection position guiding floor of the present invention, since the floor surface from the entrance to the standing stand has a downward slope, the subject is guided to the standing standing stand. Then, on the lattice of the standing table, the foot installation position can be known by the feel of the sole of the foot with respect to the plurality of protrusions or depressions, and the subject can stand with his / her foot placed at an appropriate detection position.

[0007]

The present invention will be described in detail below with reference to the embodiments shown in the drawings.

1 (a) and 1 (b) show a gate monitor foot detection position guiding floor according to an embodiment of the present invention. Figure 1 (a),
As shown in (b), a standing stand 14 is provided, which is composed of gratings 13 that are installed facing each other and that are spaced apart from each other, and that are installed on both sides of the two radiation detectors 21 and 21 arranged side by side. The floor 11 and the exit floor 12 have a stand 14
The floor is slanted so that it becomes the bottom. further,
At the foot setting position where the foot should be placed on the standing stand 14, a plurality of, for example, hemispherical protrusions 15 that can be sensed by the sole of the foot are provided on the upper surface of the lattice 13 in a range corresponding to the sole of each of the left and right. There is.

In the gate monitor foot detection position guiding floor of the embodiment of the present invention constructed as described above, the entrance floor 11
Is inclined downward to the stand 14, so that the subject is guided to the bottom stand 14. Then, on the lattice 13 of the upright table 14, the foot setting position can be known by the feel of the soles of the plurality of protrusions 15, and the subject can stand with his / her foot placed at an appropriate detection position.

As described above, according to the gate monitor foot detection position guiding floor of the embodiment of the present invention, the examinee is guided to the stand by the feeling of passing the foot without visually observing and standing accurately at the detection position. Therefore, the efficiency of detection can be improved.

Next, a modification of the present invention will be described.

In the modified example shown in FIGS. 2A and 2B, a plurality of projections 15 on the lattice 13 of the upright stand 14 are made into smooth plate-shaped projections 16 and the same effect can be obtained.

In the modification shown in FIG. 3, the lattice 1 of the upright stand 14 is used.
The same effect can be obtained by providing the depressions 17 on the surface 3 in place of the convex portions 16 of FIGS. 2 (a) and 2 (b).

In the modification shown in FIG. 4, a plurality of protrusions 15 are provided on the lattice 13 outside the range of the foot setting position where the foot should be placed on the upright stand 14, and the subject has protrusions on the soles of the feet. Although it is different from the embodiments of FIGS. 1 to 3 in that it stands in a position where the stimulation by 15 is not felt, it is equivalent in the effect of being guided to an appropriate detection position.

[0015]

As described in detail above, according to the present invention, the erection platform from the inlet and the outlet is arranged so that the erection platform composed of the grating installed facing the upper surface of the radiation detector and keeping a gap serves as the bottom. The floor surface up to is an inclined surface, and at the foot setting position where the foot on the standing table should be placed, any of a plurality of protrusions or depressions that can be perceived by the sole on the upper surface of the lattice in the range corresponding to the left and right soles Since the entrance floor has a downward slope due to the realization of the gate monitor foot detection position guiding floor provided with one or the other, the subject is guided to the standing stand which is the bottom. Then, on the lattice of the standing table, the foot setting position can be known by the feel of the sole of the foot with respect to the protrusion or the depression, and the subject can stand with his / her foot at an appropriate detection position. Thus, the subject is guided to the stand by the feeling of passing through his / her feet, not by visual inspection, and stands accurately at the detection position, which helps to improve the efficiency of the examination.

[Brief description of drawings]

1 shows a gate monitor foot detection position guiding floor of one embodiment of the present invention, FIG. 1 (a) is a top view, and FIG.
FIG. 1B is a sectional view of FIG.

FIG. 2 shows a modified example of the gate monitor foot detection position guiding floor of the present invention, FIG. 2 (a) is a top view showing convex portions on a lattice, and FIG. 2 (b) is a side view. is there.

FIG. 3 is a side view showing another modified example of the gate monitor foot detection position guiding floor of the present invention, showing the depressions provided on the lattice.

FIG. 4 shows another modified example of the gate monitor foot detection position guiding floor of the present invention, and is a top view showing the arrangement of protrusions on the lattice.

5A and 5B show a configuration of a foot detecting portion of a conventional gate monitor, FIG. 5A is a top view, and FIG. 5B is FIG.
It is sectional drawing of (a).

[Explanation of symbols]

 11 ... Entrance floor 12 ... Exit floor 13 ... Lattice 14 ... Standing stand 15 ... Protrusion 16 ... Convex part 17 ... Dimple 21 ... Radiation detector

Claims (1)

[Claims] 1. In a foot detector of a gate monitor for detecting radioactive contamination on the surface of a human body, an erecting table composed of a lattice installed facing the upper surface of the radiation detector and keeping a gap serves as the bottom. Thus, the floor surface from the entrance and exit to the standing stand is an inclined surface, and the feet of the standing stand can be perceived by the soles on the upper surface of the lattice in the range corresponding to each sole at the foot setting position. A gate monitor foot detection position guide floor, characterized by being provided with either one of a plurality of protrusions or depressions.