JP3456068B2 - Body surface monitor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitor for monitoring a person who has entered a radiation controlled area such as a nuclear power plant, a nuclear research institute, a radiation equipment manufacturing factory, etc., as a subject at the time of leaving, for body surface contamination. Therefore, even for subjects such as visitors who are not accustomed to measuring contamination, care should be taken to maintain a sense of familiarity and security, and to reduce anxiety and resistance, and to ensure proper monitoring. The present invention relates to a body surface monitor that supports smooth operation.

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIGS. FIG. 8 is a perspective view seen from the entrance side from the radiation control area. In FIG. 8, when a person (examinee) who has left the radiation controlled area steps on the entrance mat 66, the entrance door 61 that has been closed until then is opened, and “Measurable” is displayed on the display 67. By the way, if the exiting person is new to pollution measurement like an observer and is not accustomed to it
62 is operated in advance. Now, when the exiting person enters inside and places his / her both feet on the platform 63, this is detected by a foot sensor (not shown). Next, when the evacuee puts his hands on his palms vertically and inserts them into the right hand insertion opening 64 and the left hand insertion opening 74 hidden behind the entrance door 61 (see FIG. 9), this Is detected by a hand position sensor (not shown). Then, the head measuring unit 65 starts descending toward the head of the exiting person, and finishes the overhead positioning suitable for the contamination measurement of the head. This overhead positioning is performed via the height measuring sensor 68. The height measuring sensor 68 is
This is a well-known configuration that includes a plurality of sets of a light emitting unit and a light receiving unit, and measures the height based on the light passing from the light emitting unit to the light receiving unit and the light shielded by the head.

As described above, the preparation for the contamination measurement of the exiting person is finished, but when the visitor correspondence switch 62 is operated in advance, the entrance door 61 is closed at the latest stage as long as the preparation is completed. . This is to prevent an exiter, such as a visitor, who is not used to measuring pollution from feeling uncomfortable and afraid to close the entrance door 61 at an early stage. On the other hand, when the visitor-corresponding switch 62 is not operated in advance, that is, when the exiter is accustomed to measuring contamination, the exiter puts the entrance door 61 at an early stage when he or she puts both feet on the platform 63.
Will be closed.

As described above, the preparation for the contamination measurement of the leaving person is completed, and the measurement of the surface contamination of the leaving person is performed. This measurement is performed on a total of 17 sites via a measurement sensor efficiently arranged on the body surface. Specifically, the measurement site includes the top of the head, the left and right soles, the back of each hand, the palm, the front (face, chest, abdomen, front thighs, front legs), the back (back of the head, upper back, lower back, Posterior thigh, posterior leg), side (upper, lower, middle on each side). For both hands, the measurement is started by pushing the lever on the back side after inserting the hand into the hand insertion opening 64, and the other parts are all automatically measured. The measurement result is displayed on the display unit on the exit side (not shown), and a buzzer sounds to notify when a contamination determination is made, but the detailed description is omitted.

FIG. 9 is a perspective view of the conventional example viewed from the outlet side. In FIG. 9, reference numeral 71 denotes an exit door, which is closed by a step provided on the exit mat 76 when an exiting person exits the non-controlled area after finishing the contamination measurement in the conventional example. The hand insertion hole 74 is for the left hand as described above, and is paired with the hand insertion opening 64 for the right hand in FIG. Figure 9
The prismatic unit installed upright on the left side is an integrated structure including a display unit 77 (outlet side) on the upper side and a maintenance unit 80 on the lower side. The display unit 77 is provided with the monitor number 1, and displays the measurement result and the measurement end on the exit side on the light emitting diode display surface on the front side of the figure, and on the liquid crystal display surface 79 on the right side, Guidance / instructions related to measurement will be given to the leaving person (examinee). The maintenance unit 80 centrally incorporates maintenance equipment and is covered by a front plate 83 and a side plate 84. The left hand insertion port 74 belongs to the maintenance unit 80. This maintenance unit
80 is pulled out to the front side together with the display 77, and the front plate 83
The side plate 84 and the side plate 84 are opened and removed to allow access to the maintenance equipment inside. A power supply 90 is installed as a ceiling above the monitor.

[0006]

In the conventional example, when a person (examinee) who has left the radiation controlled area is not accustomed to the contamination measurement like a visitor, the switch 62 corresponding to the visitor is operated in advance. Then, the entrance door 61 is closed at the latest stage as possible so as not to feel anxiety and fear.
However, it is still undeniable that there is a ceiling (power supply 90) above the subject's head, and the surrounding area is completely enclosed, leaving a feeling of pressure. In addition to the overall structure, there seems to be room for improvement in removing anxiety in some details, such as inconvenient feeling, cold feeling, and hard feeling.

The problem to be solved by the present invention is to solve the above-mentioned problems of the prior art and to provide a feeling of familiarity and peace of mind even to a subject such as a visitor who is not used to measuring contamination. The purpose of the present invention is to provide a body surface monitor that gives a feeling, reduces anxiety and resistance, and, in turn, supports appropriate and smooth monitoring.

[0008]

The invention according to claim 1 is a monitor for monitoring the body surface contamination of a person who has entered a radiation controlled area as a subject at the time of leaving the radiation controlled area. An entrance door and an exit door respectively facing each side surface, a front wall body facing the front of the subject, a back wall facing the back of the subject, and a base of the subject, It has a rectangular tubular structure with a projecting upper opening, and has an entrance door,
Outlet doors, front wall, rear wall, each part for contamination detector body surface to the base each of the inner surface is provided, gutter cormorants group
This configuration is adopted .

[0009] Then, the inventions of claim 1, in addition to the above construction, having a hand insertion portion is a rectangular parallelepiped-shaped hollow portion having an opening above the side and front side, the right-hand measuring unit and the left-hand measuring unit a pair, is characterized in that it comprises a configuration of providing possible variable positioned vertically to the front wall. Na
Contact, claimed in the invention of claim 1, the display unit defined automatically upper and lower deflection angle depending on the height of the subject, more preferable that the so that provided on the upper end face of the front wall (請
Invention of claim 2). Further, in this display unit, two optical sensors for detecting a crown having a light emitting portion and a light receiving portion on the front side are arranged side by side in a lateral direction, and the optical axis of one optical sensor is biased upward for upward scanning. so, that biases downwards have to <br/> preferred as for downward scanning the optical axis of the other optical sensor (invention of claim 3). Further, according to claims 1 to 3,
In Ming, each of the entrance door, exit door, front wall and back wall
A decorative plate may be provided on the upper edge portion (claim 4).
Invention).

Therefore, according to the present invention, a person (examinee) who has left the controlled area can enter the entrance door, exit door,
Contamination is measured by a contamination detector for each part of the body surface provided on the inner surface of each of the front wall body, the back wall body, and the base, and even if you are unfamiliar with the contamination measurement by the monitor,
The open rectangular tubular structure at the top of the monitor allows the subject to have their head protruding upwards from the monitor when inside the monitor, thus providing a feeling of liberation and contamination. Anxiety and resistance to measurement are alleviated.

[0011] Then, especially, in the invention of claim 1, a pair of right hand measuring unit and left measuring unit, because it is possible variable positioning vertically, to effortless suitable to the subject position is selected Depending on the anxiety about contamination measurement
Resistance is alleviated. Also, De Isupurei unit, since deflection angle of the upper and lower depending on the height of the subject is automatically set, the subject easier to see the display screen, by easily accurately grasp a variety of information, the contamination measurement
Anxiety and resistance to it are alleviated (from claim 2
Ming). In here, de Isupurei-unit, when slightly becomes angle proceeding to the air side of the boundary of the one light sensor by scanning upward head and the air, the light sensor detects the parietal position However, its optical axis is biased upward in advance, and when the other optical sensor is scanned downward and it becomes an angle slightly advanced to the head side from the boundary between the air and the crown,
The optical sensor detects the parietal position, but its optical axis is biased downward in advance, so the deflection angle (elevation angle) in front of the display unit is the same between upward scan and downward scan. Ru can be (issued according to claim 3,
Ming) . In addition, it gives the examinee a sense of security and familiarity.
For example, decorative boards such as wood grain, entrance doors, exit doors, front wall
And the main corners of each upper edge of the back wall visible to the subject.
By installing in each place,
Anxiety and resistance are alleviated (the invention of claim 4).

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As embodiments of the present invention, features will be mainly described below with reference to the drawings. FIG. 1 is a perspective view of the embodiment as viewed from the entrance side. The embodiment is composed of an entrance door 1, an exit door 2 (see FIG. 2) (not shown) facing the entrance door 1, a left front wall body 3, a right rear wall body 4, and a base 5, and an upper part It has an open rectangular tubular structure. The front wall 3 has an exhibition window unit 20 on the left front side end surface thereof, and an indicator light 7 indicating "measurable" on the upper surface thereof.
Further, a display unit 40 for displaying various information related to the measurement processing as a guide or an instruction is provided, and a pair of left and right hand measurement units 30 is provided on the upper right side (inside) of the display unit 40. Further, as shown by hatching, a wood-grained decorative plate 9 is attached to each upper edge of the entrance door 1, the exit door 2 (see FIG. 2), the front wall body 3, and the back wall body 4. There is. Further, on the exit side of the embodiment, an exit mat 6 having an inclined surface is installed so that the exiting person does not fall over the step when the exiting person goes out to the non-managed area side after the measurement. In addition, it is desirable to have a similar entrance mat on the entrance side, but since care is taken when entering, there is little risk of stumbling at a step and it is often omitted. In the exhibition unit 20, the space inside the window calms your feelings.
Pictures / photos and still lifes that have the effect of making peace are exhibited. Usually, landscapes are selected as the pictures / photos, and artificial ornamental plants and the mascot character (Nuclear Boy) of the facility are selected as the still life. In addition,
The structures of the display window unit 20, the hand measurement unit 30, and the display unit 40 will be described in detail later.

Persons leaving the radiation controlled area (examinees)
Enters the inside of the embodiment from the left front (at that time, the entrance door 1 is opened and the outlet door (not shown) located opposite thereto is closed) toward the front wall body 3, and thus the back wall body 4. Stand upright with your back to the hands and insert both hands into the insertion parts of the left and right hand measurement units 30, and the hand sensor 32 attached to the foot sensor 17 and the hand insertion part 31 (see FIG. 5) The entrance door 1 is closed, and the contamination measurement of the body surface of the subject is started.

Before exiting for measurement, the evacuee removed the anxiety and resistance to contamination measurement, which is apt to be caused by unfamiliarity, by looking at the exhibits in the display window unit 20 and calmed down as much as possible. I feel at ease.
Since the subject has a shape in which the head protrudes upward from the embodiment when the subject is in the embodiment, the examinee can have a feeling of liberation, and anxiety and resistance to the contamination measurement are alleviated. Since the pair of right and left hand measurement units 30 can be variably positioned up and down, a comfortable position suitable for the subject is selected, and the display unit 40 is placed vertically according to the height of the subject. The shake angle is automatically set, and the subject can easily see the display screen and can easily grasp various information accurately. Entrance door 1, exit door 2, front wall body 3 and back wall body 4
The wood-grained decorative board 9 provided at each of the upper edges of the main parts visible to the subject removes the coldness and hardness of the conventional example, giving the subject a sense of security and familiarity. Can be made.
Some of the considerations described above exert a synergistic effect to help unfamiliar subjects alleviate their anxiety and resistance to contamination measurements, and thus facilitate accurate measurements.

By the way, in the embodiment, the head is not the target of contamination measurement, but this is for the following reason. If the hands and feet are not contaminated, it is empirically accepted that the head is also contaminated, and then the contamination measurement of the head can be omitted. In fact, most visitors do not have any contamination on their hands and feet. Further, a supplementary explanation will be given with reference to FIGS. FIG. 2 is another perspective view showing the entrance door 1 and the exit door 2 opened from the entrance side in the embodiment, and FIG.
FIG. 3 is a perspective view of the entrance door 1 and the exit door 2 that are temporarily removed and viewed from the exit side in the embodiment.

In FIG. 2, the display window unit 20 is installed as a partial door on the entrance side end surface of the front wall body 3, and the maintenance door 50 is also installed on the entire exit side end surface thereof. Exhibition window unit 20
The waiting time indicator 8 located above the above indicates the approximate waiting time until the next measurement (until the current measurement is finished) to the next subject. In the center of the base 5, a pair of foot detectors 16,
A left side detector 11 for the examinee is provided on the upper inner surface of the entrance door 1, a right side detector 12 for the examinee is provided on the upper inner surface of the exit door 2, and a examinee is provided on the lower inner surface of the rear wall body 4. The back detector 15 of
Although not visible here, front surface upper and lower detectors 13 and 14 (see FIG. 3) for the subject are respectively provided on the inner surface of the front wall 3.

In FIG. 3, a maintenance door 50 is provided on the front end face of the front wall body 3, and a front upper detector 13 is provided in order from the top of the inner surface.
A front lower detector 14 and a foot sensor 17 are provided. Further, the display unit 40 is provided at the center of the upper surface of the front wall body 3,
The hand insertion portions 31 (spaces) are provided on the left and right sides, respectively. This display unit 40 has a display surface in the center.
41a, an optical sensor composed of a pair of a light emitting part 43 and a light receiving part 44 on the upper part for aiming at the crown of the subject, and an emergency switch 45 on the lower part. An indicator light 33 is attached to the upper part on the back side of the hand insertion part 31,
This shows that the hand insertion is completed based on the hand sensor 32 ( see FIG. 5) not shown. This display unit 40
The structure around the hand insertion portion 31 will be described later in more detail.

FIG. 4 is a perspective view of the peripheral portion when the display window unit 20 is opened in the embodiment. In FIG. 4, the display window unit 20 includes a door case 21, a transparent glass window plate 22 fitted on the front surface thereof, upper and lower mounting frames 23 for mounting an exhibit, and an illumination lamp mounted on the upper portion. It consists of 24. On the mounting frame 23, a background plate on which a landscape image or a landscape photograph is attached, a holder for a still life, and the like are attached. The display window unit 20 constitutes a display window by itself, and a mode for selecting various modes stored in the entrance side of the front wall 3 such as automatic operation, maintenance, and detector calibration by closing the display window unit 20. Switch 56, operation switch 57 for up and down the hand insertion part,
Protect the cover of the low voltage power supply 58, etc.

FIG. 5 is a perspective view of the right hand (left hand) measurement unit 30 and its peripheral portion. The hand measurement unit 30 in the figure is for the right hand, but the structure for the left hand is also the same. The hand measuring unit 30 is a columnar member, and a hand insertion portion (space) 31 is provided on the upper portion thereof.
Is engraved as a rectangular parallelepiped hollow portion with an opening on the upper side and the front side, and a hand detector 34 on each inner surface on both sides, and a hand sensor 32 for detecting the end of manual insertion at the upper part of the hollow, and the insertion end on the top. The indicating lamps 33 shown in the drawing are respectively attached, and have a structure in which the positioning is variable in the vertical direction as a whole. Hand measuring unit
Since the hand insertion part 31 of the 30 is open to the upper side and the front side, unlike the conventional lateral hole-shaped hand insertion ports 64 and 74, there is no resistance to hand insertion, and the hand insertion part 31 By the variable positioning of the upper and lower sides, the proper position that can be easily measured according to the height of the subject can be determined. This upper and lower positioning is performed via an operation cylinder installed below. Here, there is also a method of automatically driving the operation cylinder based on the height measurement, but since the proper position has a certain allowable width (allowable range), in this embodiment, the clerk can visually check the height of the subject. It employs a method in which the operating cylinder is driven manually for positioning. Moreover, the examinee looks at the decorative plate 9 provided on the upper edge portion of the front wall body 3 adjacent to the hand measuring unit 30,
As described above, it has an effect of having a closeness and a sense of security when measuring hand contamination.

FIG. 6 relates to the display unit 40,
(a) is the front view and (b) is the side view. The display unit 40 is roughly classified into a rectangular parallelepiped main body 41 and a U-shaped support frame 42 that rotatably supports the main body 41 via shafts 41b that horizontally project from both side surfaces thereof. On the main body 41, a color liquid crystal display surface 41a is arranged on the front side, and two parietal detection optical sensors 43, 44 having a light emitting section and a light receiving section are arranged on the left and right. Here, one optical sensor 43 is for upward scanning, and its optical axis is biased upward slightly by an angle, and the other optical sensor 44 is for downward scanning, and its optical axis is biased downward slightly by an angle. There is. In FIG. 6B, K1 and K2 are the optical axes of the optical sensors 43 and 44, and θ1 and θ2 are the deviation angles of the optical axes from the front direction. In addition, the support frame 42,
As shown in Fig. 6 (a), the emergency switch is attached to the front of its bottom.
45 and a speaker 46, and as shown in FIG. 6B, a motor 47 for swinging the main body 41 up and down, and a chain 48 as a transmission mechanism are provided on one leg. The vertical deflection angles of the main body 41 are in the range of 45 degrees above and below the horizontal. In addition, the support frame 42 has a shaft 42 which is perpendicular to the biased position of the lower part thereof.
It has a structure in which a is projected and is rotatable around it so that it is convenient for maintenance of the main body 41 and the like.
On the display surface 41a, various instructions and instructions regarding the contamination measurement are presented to the subject, and information such as a work place explanation in advance in the controlled area and measurement results (display of abnormal parts) is provided. It The emergency switch 45 can be operated when an abnormality occurs during measurement to take an emergency measure such as opening the entrance door 1 (see FIG. 1). The speaker 46 complements the visual information on the display surface 41a via voice.

Now, the display unit 40 is the main body
It is configured as a servo mechanism to determine the vertical angle of 41 so that it can be easily seen by the subject. The motor 47 as a servo motor scans upward or downward from the beginning depending on the height of the subject when determining the deflection angle of the main body 41. The motor 47 has an optical sensor 43.
In the process of scanning in the upward direction, when the angle slightly advanced to the air side from the boundary between the head of the subject and the air, the optical sensor 43
It stops based on the detection of the top position of. Motor 47 as well
In the process of scanning the optical sensor 44 in the downward direction, when the angle slightly advances to the head side from the boundary between the head of the subject and the air, the optical sensor 44 stops based on the detection of the crown position. It is natural from the detection principle of the optical sensor that the detection position of the crown is slightly deviated depending on the scanning direction, and in reality, the response delay of the motor 47 is further accelerated. here,
As already described, the optical axis of the optical sensor 43 is preliminarily biased upward based on the trial by the actual machine, and the optical axis of the optical sensor 44 is also preliminarily biased downward based on the trial,
Each deflection angle (elevation angle) at the stop position of the main body 41 can be the same between the upward scanning and the downward scanning. In FIG. 6 (b), the angles θ1 and θ2 are both actually 2
~ 3 degrees.

FIG. 7 is a perspective view of the peripheral portion when the maintenance door 50 is opened in the embodiment. A control box 51 and a voice synthesizer 52 are installed inside the maintenance door 50.
By closing 50, various devices stored on the outlet side of the front wall 3, for example, a printer 55 that records the measurement results in order from the top, a buzzer 59 that reports an abnormality, and a maintenance outlet 5
4, cover the main power supply 53, etc.

[0023]

According to the present invention, due to the reasons described below, even if a person (examinee) who has left the control area is unfamiliar with the measurement by the monitor, a feeling of familiarity and a sense of security with respect to the monitor can be obtained. Therefore, it is possible to expect an excellent effect that anxiety and resistance to pollution measurement are alleviated, and appropriate body pollution can be smoothly monitored. (1) Due to the tubular structure with the upper part of the monitor open, the subject's head protrudes from the monitor when the subject is inside the monitor (during measurement), and the subject is surrounded from all sides as in the conventional example. The oppressive feeling is suppressed and you can have a feeling of liberation. (2) The pair of right-handed measurement unit and left-handed measurement unit can be variably positioned up and down, so a comfortable position suitable for the subject is selected, and since the upper side of each hand insertion section is open, Unlike the side hole type of the conventional example, there is no resistance to the insertion of the hand. (3) The display unit is automatically set to the vertical swing angle according to the height of the subject, so that the subject can easily see the display screen and thus easily grasp various information accurately. Moreover, the deflection angle (elevation angle) in front of the display unit can be made the same during the upward scanning and the downward scanning, which is convenient for use. (4) For the examinee to feel a sense of familiarity and security, for example, a veneer such as wood grain, like the upper edge of the entrance door, exit door, front wall body and back wall body, It is installed in the main part visible from the.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention viewed from the entrance side.

FIG. 2 is another perspective view showing the entrance door and the exit door opened from the entrance side in the embodiment.

FIG. 3 is a perspective view of the entrance door and the exit door temporarily removed from the exit side in the embodiment.

FIG. 4 is a perspective view of a peripheral portion when the display window unit is opened in the embodiment.

FIG. 5 is a perspective view of a right-hand (left-hand) measurement unit and its peripheral portion.

FIG. 6 is a front view and (b) is a side view of the display unit.

FIG. 7 is a perspective view of a peripheral portion when the maintenance door is opened in the embodiment.

FIG. 8 is a perspective view of a conventional example seen from the entrance side.

FIG. 9 is a perspective view of the conventional example seen from the outlet side.

[Explanation of symbols]

1 entrance door 2 exit door 3 Front wall 4 Back wall 5 base 6 exit mats 7 Indicator light 8 Waiting time display 9 Veneer 11 Left side detector 12 Right side detector 13 Front upper detector 14 Front lower detector 15 Back detector 16 foot detector 17 foot sensor 20 Exhibition window unit 21 door case 22 window board 23 Mounting frame 24 Lighting 30 hand measuring unit 31 Hand insertion part 32 hand sensor 33 indicator light 34 Hand detector 40 display unit 41 body 41a display surface 41b axis 42 Support frame 43,44 Optical sensor (for detecting the crown) 45 emergency switch 46 speakers 47 motor 48 chains 50 maintenance door 51 control box 52 speech synthesizer 53 Main power supply 54 Maintenance outlet 55 Printer 56 mode switch 57 Operation switch (for hand measurement unit up and down) 58 Low voltage electrode 59 Buzzer

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01T 1/169 G01T 1/00

Claims (4)

(57) [Claims] 1. A monitor for monitoring a body surface contamination of a person who has entered a radiation controlled area as a subject at the time of leaving, and an entrance door and an exit door which face each side of an upright subject. And a front side wall body facing the front side of the subject, a back side wall body facing the back side of the subject, and a base, and a rectangular tubular structure with an upper opening capable of projecting the head of the subject. No, the inlet door, exit door, front wall, rear wall, the body surface monitor each site for contamination detector body surface to the base each of the inner surface is <br/> et provided, the upper and front side Hand insertion part which is a rectangular parallelepiped hollow part opened at
Of the right-hand and left-hand measurement units
A pair can be mounted on the front wall so that it can be positioned vertically.
A body surface monitor that is characterized by the fact that it does so. 2. The monitor according to claim 1, wherein the subject
The vertical deflection angle is automatically determined according to the height of the
The spray unit, body surface monitors, characterized in that kick set on the upper end face of the front wall. 3. A monitor according to claim 2, Disperse
Equipped with a light emitting part and a light receiving part on the front side of the play unit.
Two optical sensors for detecting the crown are installed side by side,
The optical axis of the optical sensor of
The optical axis of the other optical sensor downward for downward scanning.
Body surface monitor characterized that you were biased. 4. The monitor according to claim 1, wherein the inlet door, the outlet door, the front wall body, and the back are provided.
Each upper edge of the wall body, body surface monitors, characterized in that kick set the veneer.