JP2001311699A - X-ray foreign matter detector - Google Patents

X-ray foreign matter detector

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Publication number
JP2001311699A
JP2001311699A JP2000130926A JP2000130926A JP2001311699A JP 2001311699 A JP2001311699 A JP 2001311699A JP 2000130926 A JP2000130926 A JP 2000130926A JP 2000130926 A JP2000130926 A JP 2000130926A JP 2001311699 A JP2001311699 A JP 2001311699A
Authority
JP
Japan
Prior art keywords
ray
foreign matter
human body
detection device
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2000130926A
Other languages
Japanese (ja)
Other versions
JP3737929B2 (en
Inventor
Takashi Abe
俊 阿部
Tomoyasu Otsuki
智保 大槻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anritsu Corp
Original Assignee
Anritsu Corp
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Filing date
Publication date
Application filed by Anritsu Corp filed Critical Anritsu Corp
Priority to JP2000130926A priority Critical patent/JP3737929B2/en
Publication of JP2001311699A publication Critical patent/JP2001311699A/en
Application granted granted Critical
Publication of JP3737929B2 publication Critical patent/JP3737929B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide an X-ray foreign matter detector which controls the X-ray exposure dose from an X-ray generation part and which keeps the safety of the human body from an exposure to X-rays by detecting the entering of the human body into a carrying path. SOLUTION: In the X-ray foreign matter detector 1, whether or not an object passes monitoring regions in a carrying-in port Rin or/and a carrying-out port Rout is detected by light projecting and receiving elements 4. When the object is detected, whether the object is the human body or an object W to be detected is judged on the basis of the level of a detection signal. When it is judged as the human body, the X-ray exposure dose is controlled by a control means so as to be less than a prescribed amount.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、搬入口から搬送さ
れる被検査物に対し、X線発生部からX線を曝射してX
線の透過量をX線検出部で検出し、搬出口から被検査物
を搬出するX線異物検出装置に係り、特に、人体へのX
線による被曝を防止するX線異物検出装置に関するもの
である。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray emitting device that emits X-rays from an X-ray generator to an inspection object conveyed from a carry-in entrance.
The present invention relates to an X-ray foreign matter detection device that detects an amount of transmitted X-rays by an X-ray detection unit and carries out an object to be inspected from a carry-out port.
The present invention relates to an X-ray foreign matter detection device that prevents exposure to radiation.

【0002】[0002]

【従来の技術】図15及び図16に、X線異物検出装置
50を示す。X線異物検出装置50は、被検査物Wから
異物を検出する異物検出部51と、被検査物Wを搬送す
る搬送機構54と、で構成されている。搬送機構54
は、搬送ベルトBと4つの搬送ローラ55と不図示の駆
動モータからなり、搬入口Rinから搬入された被検査物
Wを搬送し、搬出口Rout から搬出するようになってい
る。
2. Description of the Related Art FIGS. 15 and 16 show an X-ray foreign matter detecting device 50. FIG. The X-ray foreign substance detection device 50 includes a foreign substance detection unit 51 that detects a foreign substance from the inspection object W, and a transport mechanism 54 that transports the inspection object W. Transport mechanism 54
Is composed of a transport belt B, four transport rollers 55, and a drive motor (not shown), and transports the inspection object W carried in from the carry-in port Rin and carries it out from the carry-out port Rout .

【0003】異物検出部51は、装置上部の支持板56
に支持されているX線発生器52と、装置中部に設けら
れているX線検出器53と、で構成されている。X線発
生器52の下面には、X線検出器53に向けて略円錐状
にX線を爆射するX線爆射口52aが設けられており、
支持板56に形成されている長孔形状のスリットを介し
て、略三角形のスクリーン状のX線を曝射するようにな
っている。
[0003] The foreign substance detection unit 51 is provided with a support plate 56 at the top of the apparatus.
, And an X-ray detector 53 provided in the center of the apparatus. On the lower surface of the X-ray generator 52, there is provided an X-ray emission port 52a for emitting X-rays in a substantially conical shape toward the X-ray detector 53,
A substantially triangular screen-shaped X-ray is emitted through a slit having a long hole shape formed in the support plate 56.

【0004】X線検出器53は、搬送ベルトBの裏面が
向かい合っているスペースに配置されている金属箱57
内に設けられている。搬送ベルトBの裏面は、金属箱5
7上面に摺接するようになっている。
[0004] The X-ray detector 53 is provided with a metal box 57 arranged in a space where the back surface of the conveyor belt B faces each other.
It is provided within. The back of the conveyor belt B is a metal box 5
7 to be in sliding contact with the upper surface.

【0005】搬送ベルトB上の被検査物Wは、X線発生
器52からのスクリーン状のX線スクリーンを通過す
る。スクリーン通過の際、被検査物Wを透過するX線曝
射量がX線検出器53により検出され、被検査物W内に
異物が混入されているか否かを検出するようになってい
る。
The inspection object W on the conveyor belt B passes through a screen-shaped X-ray screen from the X-ray generator 52. At the time of passing through the screen, the amount of X-ray radiation transmitted through the inspection object W is detected by the X-ray detector 53, and it is detected whether or not foreign matter is mixed in the inspection object W.

【0006】X線は人体に悪影響を及ぼすため、曝射さ
れるX線は、支持板56裏面と、装置中部の内側面と、
搬送ベルトBと、で構成される搬送路Rにより反射を繰
り返して減衰され、搬入口Rin及び搬出口Rout から放
出されるX線は、人体には影響を与えない。また、支持
板56裏面には、ゴム製の遮蔽カーテン58を設けるこ
とにより、X線を遮蔽するようになっている。
[0006] Since X-rays have an adverse effect on the human body, the X-rays to be emitted are exposed to the back surface of the support plate 56, the inner side surface of the central part of the apparatus,
A conveyor belt B, in attenuated by repeated reflection by configured transport path R, X-rays emitted from the entrance R in and carry-out port R out does not affect the human body. Further, X-rays are shielded by providing a rubber shielding curtain 58 on the back surface of the support plate 56.

【0007】[0007]

【発明が解決しようとする課題】しかし、X線異物検出
装置50は、被検査物Wの搬送ラインの一部を構成して
いるため、被検査物Wが搬送路途中で詰まった場合、作
業者の不注意によりX線の曝射を停止することなく、搬
入口Rin又は搬出口Rout から手を入れて被検査物Wを
取り出そうとする場合がある。このため、直接人体にX
線が被曝されることとなる。
However, since the X-ray foreign matter detection device 50 constitutes a part of the transport line of the inspection object W, if the inspection object W is clogged in the middle of the transportation path, the work is not performed. sometimes it is taken out without any, entrance R in or carry-out port R out object W hands from stopping the X-ray radiation by the inadvertent's. Therefore, X is directly applied to the human body.
The radiation will be exposed.

【0008】特に、食料品を被検査物Wとしてその中の
異物を検出する場合、搬送された食料品が遮蔽カーテン
58に接してしまうため、衛生上の問題から遮蔽カーテ
ン58を取りはずして検査することとなる。この場合に
おいて、上述のような不注意により人体が搬送路Rに侵
入すると、遮蔽カーテン58がある場合に比し、多量の
X線を被曝してしまうこととなる。
In particular, in the case of detecting foreign matter in a food product as the inspection object W, the conveyed food product comes into contact with the shielding curtain 58. Therefore, the inspection is performed by removing the shielding curtain 58 from a sanitary problem. It will be. In this case, if the human body enters the transport path R due to carelessness as described above, a large amount of X-rays will be exposed as compared with the case where the shielding curtain 58 is present.

【0009】本発明は、上記従来技術の欠点を除くため
になされたものであって、その目的とするところは、人
体の搬送路内への侵入を検知することにより、X線発生
部からのX線曝射量を制御し、X線被曝から未然に人体
の安全を図ることにある。
SUMMARY OF THE INVENTION The present invention has been made to eliminate the above-mentioned drawbacks of the prior art, and has as its object to detect the intrusion of a human body into a transport path so that an X-ray from an X-ray generator can be detected. An object of the present invention is to control the amount of X-ray exposure and to ensure the safety of the human body before X-ray exposure.

【0010】[0010]

【課題を解決するための手段】要するに、本発明の請求
項1記載のX線異物検出装置は、搬入口(Rin)から搬
送される被検査物(W)に対し、X線発生部(2)から
X線を曝射して前記X線の透過量をX線検出部(53)
で検出し、搬出口(Rout )から前記被検査物を搬出す
るX線異物検出装置において、前記搬入口又は/及び前
記搬出口を監視領域とし、該監視領域を通過する物体の
有無を検出し、検出された前記物体が人体であるか否か
を判別する判別手段(3)と、該判別手段により前記物
体が前記人体であると判別されたとき、前記X線発生部
から曝射される前記X線曝射量を所定量未満に制御する
制御手段(10)と、を具備することを特徴とする。
In short, the X-ray foreign matter detecting apparatus according to the first aspect of the present invention is configured such that an inspection object (W) conveyed from a carry- in entrance (R in ) is subjected to an X-ray generation unit (W). X-rays are irradiated from 2) and the amount of transmission of the X-rays is detected by an X-ray detection unit (53).
In the X-ray foreign matter detection device for detecting the object at the carry-out port (R out ) and carrying out the inspection object from the carry-out port (R out ), the carry-in port and / or the carry-out port is set as a monitoring area, and the presence or absence of an object passing through the monitoring area is detected Determining means (3) for determining whether or not the detected object is a human body; and when the determined means determines that the object is the human body, the object is irradiated from the X-ray generating unit. Control means (10) for controlling the X-ray exposure to less than a predetermined amount.

【0011】また、本発明の請求項2記載のX線異物検
出装置は、請求項1記載のX線異物検出装置において、
前記判別手段は、対向し合う一対の投受光素子(4a,
4b)と、前記被検査物が前記監視領域を通過する時間
に相当する予め設定された設定通過時間(t0 )を、前
記受光素子の受光レベルが所定のレベルから低レベルに
なった時点から計時する計時手段(7)と、からなり、
前記設定通過時間経過後における前記受光素子の受光レ
ベルが前記低レベルであるときに、前記監視領域を通過
する前記物体を前記人体と判別し、前記設定通過時間経
過後における前記受光素子の受光レベルが前記所定のレ
ベルであるときに、前記監視領域を通過する前記物体を
前記被検査物と判別することを特徴とする。
According to a second aspect of the present invention, there is provided an X-ray foreign matter detecting apparatus as set forth in the first aspect.
The discriminating means includes a pair of opposing light emitting and receiving elements (4a,
4b) and a preset set transit time (t 0 ) corresponding to the time when the inspection object passes through the monitoring area from the time when the light receiving level of the light receiving element is changed from a predetermined level to a low level. Timing means (7) for timing,
When the light receiving level of the light receiving element after the lapse of the set passage time is the low level, the object passing through the monitoring area is determined to be the human body, and the light receiving level of the light receiving element after the lapse of the set passage time When is at the predetermined level, the object passing through the monitoring area is determined to be the inspection object.

【0012】更に、本発明の請求項3記載のX線異物検
出装置は、請求項2記載のX線異物検出装置において、
前記一対の投受光素子を高さ方向に調整自在な位置調整
手段(11)を有し、前記制御手段は、前記判別手段が
前記物体を前記被検査物と判別したときに、前記位置調
整手段に前記一対の投受光素子の位置を上昇させるよう
に制御することを特徴とする。
Further, the X-ray foreign object detecting device according to claim 3 of the present invention is the X-ray foreign object detecting device according to claim 2,
A position adjusting unit (11) capable of adjusting the pair of light emitting and receiving elements in a height direction, wherein the control unit is configured to control the position adjusting unit when the determining unit determines that the object is the object to be inspected; And controlling the position of the pair of light emitting and receiving elements to be raised.

【0013】また、本発明の請求項4記載のX線異物検
出装置は、搬入口(Rin)から搬送される被検査物
(W)に対し、X線発生部(2)からX線を曝射して前
記X線の透過量をX線検出部(53)で検出し、搬出口
(Rout )から前記被検査物を搬出するX線異物検出装
置において、前記被検査物より上方の前記搬入口又は/
及び前記搬出口部分を監視領域とし、該監視領域を通過
する物体の有無を検出し、検出された前記物体を人体で
あると判別する判別手段(3)と、該判別手段により前
記人体が判別されたとき、前記X線発生部から曝射され
る前記X線曝射量を所定量未満に制御する制御手段(1
0)と、を具備することを特徴とする。
In the X-ray foreign matter detecting apparatus according to a fourth aspect of the present invention, an X-ray is generated from an X-ray generator (2) for an inspection object (W) conveyed from a carry- in entrance (R in ). In an X-ray foreign matter detection device that irradiates and detects the amount of transmission of the X-rays by an X-ray detection unit (53) and carries out the inspection object from an outlet (R out ), The entrance or /
And a discrimination means (3) for detecting the presence or absence of an object passing through the monitoring area by using the exit area as a monitoring area, and discriminating the detected object as a human body. Control means (1) for controlling the amount of X-ray irradiation emitted from the X-ray generation unit to be less than a predetermined amount.
0).

【0014】また、本発明の請求項5記載のX線異物検
出装置は、請求項4記載のX線異物検出装置において、
前記判別手段は、対向し合う一対の投受光素子(4a,
4b)であることを特徴とする。
According to a fifth aspect of the present invention, there is provided an X-ray foreign matter detecting apparatus according to the fourth aspect.
The discriminating means includes a pair of opposing light emitting and receiving elements (4a,
4b).

【0015】更に、本発明の請求項6記載のX線異物検
出装置は、請求項1記載のX線異物検出装置において、
前記判別手段は、赤外線センサ(13)であることを特
徴とする。
Further, the X-ray foreign object detecting device according to claim 6 of the present invention is the X-ray foreign object detecting device according to claim 1,
The determination means is an infrared sensor (13).

【0016】また、本発明の請求項7記載のX線異物検
出装置は、請求項1〜6のいずれかに記載のX線異物検
出装置において、前記制御手段は、前記X線曝射量が前
記所定量未満に制御された後、前記検出手段からの検出
信号に基づき、前記人体と判別された前記物体がないと
検出されたときに、前記X線曝射量を前記所定量以上に
制御することを特徴とする。
According to a seventh aspect of the present invention, there is provided an X-ray foreign matter detecting apparatus according to any one of the first to sixth aspects, wherein the control means is adapted to control the X-ray irradiation amount. After being controlled to be less than the predetermined amount, when it is detected that the object determined to be the human body does not exist based on a detection signal from the detection unit, the X-ray exposure amount is controlled to be equal to or more than the predetermined amount. It is characterized by doing.

【0017】更に、本発明の請求項8記載のX線異物検
出装置は、請求項1〜7のいずれかに記載のX線異物検
出装置において、警報音を発生する警報手段(14)を
有し、前記制御手段は、前記判別手段により前記物体が
前記人体と判別されたとき、前記警報手段に前記警報音
を発生させるように制御することを特徴とする。
Further, an X-ray foreign matter detecting device according to claim 8 of the present invention is the X-ray foreign matter detecting device according to any one of claims 1 to 7, further comprising an alarm means (14) for generating an alarm sound. The control means controls the warning means to generate the warning sound when the determination means determines that the object is the human body.

【0018】上記X線異物検出装置は、搬入口(Rin
又は/及び搬出口(Rout )の監視領域を物体が通過す
るか否かを検知する。物体を検出した場合、検出信号の
レベルからその物体が人体か被検査物(W)であるかを
判別し、人体と判別した場合に、X線曝射量を所定量未
満に制御する。
The above-mentioned X-ray foreign matter detection device is provided with a carry-in entrance (R in ).
And / or detecting whether the object passes through the monitoring area of the exit (R out ). When an object is detected, it is determined from the level of the detection signal whether the object is a human body or an object to be inspected (W), and when it is determined that the object is a human body, the X-ray exposure is controlled to be less than a predetermined amount.

【0019】[0019]

【発明の実施の形態】まず、本発明によるX線異物検出
装置の第1実施の形態について説明する。なお、従来技
術と同一部分には同一符号を付し、その説明を省略す
る。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment of an X-ray foreign matter detecting device according to the present invention will be described. The same parts as in the prior art are denoted by the same reference numerals, and description thereof will be omitted.

【0020】図1は、本発明によるX線異物検出装置1
の第1実施の形態を示す概略ブロック図である。第1実
施の形態のX線異物検出装置1は、X線発生部2と、判
別手段3と、制御手段10で大略構成されている。
FIG. 1 shows an X-ray foreign matter detector 1 according to the present invention.
1 is a schematic block diagram showing a first embodiment of the present invention. The X-ray foreign matter detection device 1 according to the first embodiment is generally constituted by an X-ray generation unit 2, a determination unit 3, and a control unit 10.

【0021】X線発生部2にはX線発生器52が設けら
れており、通常、装置本体が電源供給された状態で入力
スイッチをONすることにより、常時所定量のX線を下
方の搬送ベルトBに向けてスリットを介してスクリーン
状に曝射するようになっている。X線発生部2には、ス
イッチング回路2aが設けられており、後述する制御手
段10からの制御信号によりスイッチング回路2aがO
N/OFF制御され、これに伴い、X線発生器52によ
るX線曝射がON/OFF制御される。
The X-ray generator 2 is provided with an X-ray generator 52. Normally, a predetermined amount of X-rays are conveyed downward by turning on an input switch while the apparatus main body is supplied with power. Exposure is performed in a screen shape toward the belt B through a slit. The X-ray generator 2 is provided with a switching circuit 2a, and the switching circuit 2a is turned on by a control signal from a control unit 10 described later.
N / OFF control is performed, and accordingly, X-ray irradiation by the X-ray generator 52 is ON / OFF controlled.

【0022】判別手段3は、対向しあう一対の投受光素
子4(4a,4b)を有しており、図2及び図3に示す
ように、搬送路Rの両端に形成されている搬入口Rin
は搬出口Rout の内側面5に設けられ、監視領域として
いる。
The discriminating means 3 has a pair of light emitting and receiving elements 4 (4a, 4b) facing each other, and as shown in FIGS. provided on the inner surface 5 of the R in or carry-out port R out, are the monitoring area.

【0023】投受光素子4は、図3に示すように、常
時、投光素子4aから受光素子4bに向けて光を送出し
て搬入口Rin又は搬出口Rout を通過する物体を監視し
ており、受光素子4bの受光レベルを示す検出信号(電
圧信号)を送出している。
The light emitting and receiving element 4, as shown in FIG. 3, at all times, monitoring the object passing through the light projecting entrance to deliver light toward the light receiving element 4b of the light elements 4a R in or carry-out port R out And sends out a detection signal (voltage signal) indicating the light receiving level of the light receiving element 4b.

【0024】判別手段3には、受光素子4bからの検出
信号を受けて監視領域を通過した物体が人体か否かを判
別する判別部6が設けられている。判別部6には、予め
作動時間が設定されている計時手段としてのタイマ7が
設けられており、図4に示すように、受光素子の受光レ
ベルの立ち下がり(図4中(A) )を検出して設定された
時間分だけ作動するようになっている(図4中(B) )。
この設定された時間は、被検査物Wが監視領域を通過す
る時間に相当する時間(以下「設定通過時間t 0 」)で
あり、搬送機構54の搬送速度と被検査物Wの搬送方向
の長さから予め決定される。
The discriminating means 3 detects the light from the light receiving element 4b.
Receives a signal and determines whether the object passing through the monitoring area is a human body
A differentiating unit 6 is provided. The determination unit 6
Timer 7 as a timekeeping means with the operating time set
As shown in FIG. 4, the light receiving level of the light receiving element is provided.
Set by detecting the falling edge of the bell ((A) in FIG. 4)
It operates only for the time ((B) in FIG. 4).
During this set time, the inspection object W passes through the monitoring area.
Time (hereinafter referred to as “set transit time t”). 0")so
The transport speed of the transport mechanism 54 and the transport direction of the inspection object W
Is determined in advance from the length of

【0025】判別部6は、設定通過時間t0 経過後の受
光レベルに基づき、監視領域を通過した物体が人体か被
検査物Wかを判別する。具体的には、図4に示すよう
に、受光レベルが元のレベルに戻っているときは(図4
中(C) )、通過した物体が被検査物と判別し、受光レベ
ルが立ち下がったまま(低レベル維持)であるとき(図
4中(D) )は、人体と判別し、制御手段10に判別信号
を送出する。
The discriminating section 6 discriminates whether the object that has passed through the monitoring area is a human body or an inspected object W based on the light receiving level after the lapse of the set transit time t 0 . Specifically, as shown in FIG. 4, when the light reception level returns to the original level (FIG.
In the middle (C)), the passed object is determined to be the inspection object, and when the received light level is kept falling (low level maintained) ((D) in FIG. 4), the object is determined to be a human body and the control means 10 To send a determination signal.

【0026】制御手段10は、判別手段3(判別部6)
からの判別信号を受け、X線発生部2への電源供給をO
FFにする制御信号を、X線発生部2のスイッチング回
路2aへ送出する。また、その後、受光レベルが立ち上
がりを検知して、X線発生部2への電源供給をONにす
る制御信号を、X線発生部2のスイッチング回路2aへ
送出する。
The control means 10 includes a discriminating means 3 (discriminating section 6).
Power supply to the X-ray generation unit 2
A control signal to make the FF is sent to the switching circuit 2a of the X-ray generation unit 2. After that, a rise in the light receiving level is detected, and a control signal for turning on the power supply to the X-ray generation unit 2 is sent to the switching circuit 2a of the X-ray generation unit 2.

【0027】次に、本実施の形態の作用について図4及
び図5を用いて説明する。まず、装置本体に電源供給し
てスイッチSWを入力し、被検査物Wを搬送させて、X
線を曝射する。このとき、投光素子4aからの投光ビー
ムが受光素子4bで受光されて常時監視状態となってい
る(ST1−No)。
Next, the operation of the present embodiment will be described with reference to FIGS. First, power is supplied to the apparatus main body, the switch SW is input, and the inspection object W is transported.
Expose the line. At this time, the light projecting beam from the light projecting element 4a is received by the light receiving element 4b and is constantly monitored (ST1-No).

【0028】監視領域を物体が通過すると、投光素子4
aからの投光ビームが遮光され、図4(A) に示すよう
に、受光素子4bの受光レベルが低下する(ST1−Y
es)。判別部6では、このときの受光レベルの立ち下
がりを検知して、図4(B) に示すように、設定通過時間
0 分タイマ7を作動させる(ST2)。
When an object passes through the monitoring area, the light emitting element 4
4A is blocked, and the light receiving level of the light receiving element 4b decreases as shown in FIG. 4A (ST1-Y).
es). The determination unit 6 detects the fall of the received light level at this time, as shown in FIG. 4 (B), actuating the setting passage time t 0 minute timer 7 (ST2).

【0029】設定通過時間t0 経過後の受光レベルが元
のレベルであるときは、通過した物体を被検査物Wと判
別し(ST3−No)、再度、監視領域に物体が通過す
るか否かを検出する(ST1)。そして、図4(D) に示
すように、設定通過時間t0経過後の受光レベルが低レ
ベルを維持しているときは、通過した物体を人体と判別
し、図4(E) に示すように、判別信号を制御手段10に
送出する(ST3−Yes)。
If the light reception level after the passage of the set passage time t 0 is the original level, the passed object is determined to be the inspection object W (ST3-No), and whether or not the object passes through the monitoring area again is determined. Is detected (ST1). Then, as shown in FIG. 4 (D), when the light reception level after the passage of the set passage time t 0 is maintained at a low level, the passed object is determined to be a human body, and as shown in FIG. 4 (E). Then, a determination signal is sent to the control means 10 (ST3-Yes).

【0030】制御手段10は、その判別信号を受け、X
線発生部2のスイッチング回路2aをOFFにする制御
信号を送出し、図4(F) に示すように、X線曝射量を0
にする(ST4)。その後、判別部6により、受光レベ
ルが元のレベルに上昇したか否かを検知する(ST
5)。低レベルを維持している場合(ST5−No)、
受光レベルの監視を続ける。図4(G) に示すように、元
のレベルに上昇している場合(ST5−Yes)、図4
(H) に示すように、監視領域に人体無しと判別して判別
信号を制御手段10に送出する。制御手段10は、その
判別信号を受け、X線発生部のスイッチング回路をON
にする制御信号を送出し、図4(I) に示すように、X線
曝射量を元に戻す(ST6)。
The control means 10 receives the determination signal and receives X
A control signal for turning off the switching circuit 2a of the line generating unit 2 is sent out, and as shown in FIG.
(ST4). Thereafter, the determination unit 6 detects whether the light receiving level has risen to the original level (ST).
5). When the low level is maintained (ST5-No),
Continue monitoring the received light level. As shown in FIG. 4 (G), when the level has risen to the original level (ST5-Yes),
As shown in (H), it is determined that there is no human body in the monitoring area, and a determination signal is sent to the control means 10. The control means 10 receives the determination signal and turns on the switching circuit of the X-ray generation unit.
A control signal is sent to reset the X-ray exposure as shown in FIG. 4 (I) (ST6).

【0031】被検査物Wの異物検出を続行する場合は、
再度受光レベルの検出をし、監視を続行する(ST7−
No)。被検査物Wがない場合は、装置本体の電源をO
FFにして、検査を終了する(ST7−Yes)。
When the detection of foreign matter in the inspection object W is to be continued,
The light receiving level is detected again and monitoring is continued (ST7-
No). If there is no inspection object W, turn off the power of the main unit.
The test is set to FF and the inspection is terminated (ST7-Yes).

【0032】また、上述した実施の形態において、図6
及び図7に示すように、投受光素子4を高さ方向に調整
自在な位置調整手段11を具備する構成としてもよい。
位置調整手段11は、図7に示すように、投受光素子4
を上下方向に移動させる長孔12と、長孔12に沿って
投受光素子4を移動させる不図示の駆動部で構成されて
いる。
In the above-described embodiment, FIG.
As shown in FIG. 7 and FIG. 7, the light emitting and receiving element 4 may be provided with a position adjusting means 11 which can be adjusted in the height direction.
As shown in FIG. 7, the position adjusting means 11
And a driving unit (not shown) for moving the light emitting / receiving element 4 along the long hole 12.

【0033】そして、図8に示すように、判別手段3が
物体を被検査物Wと判別したときに(ST3−No)、
図4(J) に示すように、制御手段10から位置調整手段
11の駆動部(駆動ドライバ)に位置補正信号を送出
し、投受光素子4の位置を上昇させ(ST8)、上昇後
の受光レベルの状態を監視する(ST5)。これによ
り、搬送される被検査物Wの高さが各々異なる場合であ
っても、投受光素子4の位置を被検査物Wの最大高さに
対応させることができる。
Then, as shown in FIG. 8, when the discriminating means 3 discriminates the object from the inspection object W (ST3-No),
As shown in FIG. 4 (J), a position correction signal is sent from the control means 10 to the drive unit (drive driver) of the position adjustment means 11, and the position of the light emitting / receiving element 4 is raised (ST8). The state of the level is monitored (ST5). Accordingly, even when the heights of the transported inspection objects W are different from each other, the position of the light emitting / receiving element 4 can be made to correspond to the maximum height of the inspection object W.

【0034】次に、本発明の第2実施の形態について説
明する。本実施の形態は、図9に示すように、予め投受
光素子4を被検査物Wの最大高さhよりも高い位置に設
けた例である。すなわち、投受光素子4により被検査物
Wは検出されることはないため、投受光素子4により検
出される物体を人体であるとして、直ちに人体であると
の判別信号を制御手段10に送出するようになってい
る。
Next, a second embodiment of the present invention will be described. In the present embodiment, as shown in FIG. 9, an example in which the light emitting / receiving element 4 is provided at a position higher than the maximum height h of the inspection object W in advance. That is, since the object W to be inspected is not detected by the light emitting / receiving element 4, the object detected by the light emitting / receiving element 4 is determined to be a human body, and a determination signal indicating that the object is a human body is immediately transmitted to the control means 10. It has become.

【0035】次に、本実施の形態の作用について図10
及び図11を用いて説明する。まず、投光素子4aから
の投光ビームを受光素子4bで受光させて常時監視状態
とする(ST9−No)。監視領域を物体が通過する
と、投光素子からの投光ビームが遮光され、図11(A)
に示すように、受光素子4bの受光レベルが低下する。
このレベル低下により直ちに通過した物体を人体と判別
し、図11(B) に示すように、判別信号を制御手段10
に送出する(ST9−Yes)。
Next, the operation of this embodiment will be described with reference to FIG.
This will be described with reference to FIG. First, the light projecting beam from the light projecting element 4a is received by the light receiving element 4b, and is constantly monitored (ST9-No). When an object passes through the monitoring area, the light beam from the light emitting element is blocked, and FIG.
As shown in the figure, the light receiving level of the light receiving element 4b decreases.
The object that has passed immediately due to this level drop is determined as a human body, and as shown in FIG.
(ST9-Yes).

【0036】制御手段10は、その判別信号を受け、X
線発生部2のスイッチング回路2aをOFFにする制御
信号を送出し、図11(C) に示すように、X線曝射量を
0にする(ST10)。その後、判別部6により、受光
レベルが元のレベルに上昇したか否かを検知する(ST
11)。図11(D) に示すように、低レベルを維持して
いる場合(ST11−No)、受光レベルの監視を続け
る。図11(E) に示すように、元のレベルに上昇してい
る場合(ST11−Yes)、図11(F) に示すよう
に、監視領域に人体無しと判別して判別信号を制御手段
10に送出する。制御手段10は、その判別信号を受
け、X線発生部のスイッチング回路をONにする制御信
号を送出し、図11(G) に示すように、X線曝射量を元
に戻す(ST12)。
The control means 10 receives the determination signal and
A control signal for turning off the switching circuit 2a of the line generator 2 is sent out, and the X-ray exposure is set to 0 as shown in FIG. 11C (ST10). Thereafter, the determination unit 6 detects whether the light receiving level has risen to the original level (ST).
11). As shown in FIG. 11D, when the low level is maintained (ST11-No), the monitoring of the light receiving level is continued. As shown in FIG. 11 (E), when the level has risen to the original level (ST11-Yes), as shown in FIG. To send to. The control means 10 receives the discrimination signal, sends out a control signal for turning on the switching circuit of the X-ray generation unit, and restores the X-ray exposure as shown in FIG. 11 (G) (ST12). .

【0037】被検査物Wの異物検出を続行する場合は、
再度受光レベルの検出し、監視を続行する(ST13−
No)。被検査物Wがない場合は、装置本体の電源をO
FFにして、検査を終了する(ST13−Yes)。こ
の実施の形態によれば、人体か否かの判別が不要である
ので、簡単な構成で人体検出が可能である。
When continuing the foreign substance detection of the inspection object W,
The light reception level is detected again and monitoring is continued (ST13-
No). If there is no inspection object W, turn off the power of the main unit.
The test is set to FF, and the inspection is terminated (ST13-Yes). According to this embodiment, since it is not necessary to determine whether a human body is present or not, a human body can be detected with a simple configuration.

【0038】次に、本発明の第3実施の形態について説
明する。本実施の形態は、図1に示すように、判別手段
3として赤外線センサ13を用いた例である。赤外線セ
ンサ13としては、焦電型,熱膨張型,熱電対型,抵抗
型など、動作温度が常温である熱型センサを用いる。た
とえば、焦電型を用いた場合、監視領域に物体が通過す
ると、物体から放出される赤外線を吸収してその熱エネ
ルギーを熱電変換させる。その熱エネルギーに比例した
電気信号を受けて、判別信号を制御手段10に送出す
る。
Next, a third embodiment of the present invention will be described. This embodiment is an example in which an infrared sensor 13 is used as the determination unit 3 as shown in FIG. As the infrared sensor 13, a thermal sensor having an operating temperature of normal temperature, such as a pyroelectric sensor, a thermal expansion sensor, a thermocouple sensor, or a resistance sensor, is used. For example, in the case of using a pyroelectric type, when an object passes through a monitoring area, infrared rays emitted from the object are absorbed and the heat energy is converted to thermoelectricity. Upon receiving an electric signal proportional to the heat energy, a determination signal is sent to the control means 10.

【0039】なお、第1実施の形態と同様、判別部6を
設け、予めしきい値を設定しておき、電気信号のレベル
がしきい値以上であれば、人体と判別して判別信号を送
出し、しきい値未満であれば、被検査物Wと判別するこ
ととしてもよい。
As in the first embodiment, a discriminator 6 is provided to set a threshold value in advance. If the level of the electric signal is equal to or greater than the threshold value, the discrimination signal is discriminated as a human body and the discrimination signal is generated. If it is sent out and is less than the threshold value, it may be determined that it is the inspection object W.

【0040】次に、本実施の形態の作用について図13
及び図14を用いて説明する。まず、赤外線センサ13
を監視状態(定常状態)とする(ST14−No)。監
視領域を人体が通過すると、人体から放出される赤外線
を受光して電気信号に熱電変換され、図14(A) に示す
ように、過渡状態となる。このときに発生する電気信号
により、図14(B) に示すように、直ちに判別信号を制
御手段に送出する(ST14−Yes)。
Next, the operation of the present embodiment will be described with reference to FIG.
This will be described with reference to FIG. First, the infrared sensor 13
Is set to the monitoring state (steady state) (ST14-No). When the human body passes through the monitoring area, the infrared ray emitted from the human body is received and converted into an electric signal by thermoelectric conversion. As shown in FIG. By the electric signal generated at this time, as shown in FIG. 14B, the determination signal is immediately sent to the control means (ST14-Yes).

【0041】制御手段10は、その判別信号を受け、X
線発生部2のスイッチング回路2aをOFFにする制御
信号を送出し、図14(C) に示すように、X線曝射量を
0にする(ST15)。その後、赤外線センサ13の素
子表面が定常状態か否かを検知する(ST16)。図1
4(D) に示すように、過渡状態を維持している場合(S
T16−No)、赤外線受光レベルの監視を続ける。図
14(E) に示すように、定常状態に戻った場合(ST1
6−Yes)、図14(F) に示すように、人体無しとす
る判別信号を制御手段10に送出する。そして、制御手
段10は、X線発生部2のスイッチング回路2aをON
にする制御信号を送出し、図14(G) に示すように、X
線曝射量を元に戻す(ST17)。
The control means 10 receives the determination signal and receives X
A control signal for turning off the switching circuit 2a of the line generator 2 is sent out, and the X-ray exposure is set to 0 as shown in FIG. 14C (ST15). Thereafter, it is detected whether or not the element surface of the infrared sensor 13 is in a steady state (ST16). FIG.
As shown in FIG. 4 (D), when the transient state is maintained (S
T16-No), the monitoring of the infrared light reception level is continued. As shown in FIG. 14E, when returning to the steady state (ST1)
6-Yes), a determination signal indicating that there is no human body is sent to the control means 10, as shown in FIG. Then, the control unit 10 turns on the switching circuit 2a of the X-ray generation unit 2.
Is transmitted, and as shown in FIG.
The radiation dose is restored (ST17).

【0042】被検査物Wの異物検出を続行する場合は、
再度赤外線受光レベルの検出をする(ST17−N
o)。被検査物Wがない場合は、検査を終了する(ST
17−Yes)。
When the detection of the foreign matter of the inspection object W is to be continued,
The infrared light reception level is detected again (ST17-N
o). If there is no inspection object W, the inspection is terminated (ST
17-Yes).

【0043】本実施の形態によれば、赤外線センサ13
を用いたため、監視領域を通過する物体が被検査物Wで
あるときは、赤外線センサ13による検出がされない。
一方、人体であれば、人体が放出する赤外線を受光する
ため、直ちに人体を検出でき、被検査物Wと人体との判
別が容易である。
According to the present embodiment, the infrared sensor 13
Therefore, when the object passing through the monitoring area is the inspection object W, the detection by the infrared sensor 13 is not performed.
On the other hand, in the case of a human body, since the infrared ray emitted by the human body is received, the human body can be immediately detected, and it is easy to distinguish the inspection object W from the human body.

【0044】なお、上述したいずれの実施の形態におい
ても、X線発生部のスイッチング回路をON/OFF制
御することにより、X線の曝射を所定の曝射量又は0に
制御することとしたが、人体と判別したときに(ST3
−Yes,ST9−Yes,ST14−Yes)、X線
発生器52から曝射されるX線曝射量を、人体に影響が
ない程度の曝射量に低下させる構成としてもよい。
In any of the above-described embodiments, the X-ray irradiation is controlled to a predetermined dose or 0 by controlling the switching circuit of the X-ray generation unit to be ON / OFF. Is determined to be a human body (ST3
-Yes, ST9-Yes, ST14-Yes), the X-ray irradiation amount irradiated from the X-ray generator 52 may be reduced to an irradiation amount that does not affect the human body.

【0045】この場合、制御手段10からの制御信号を
受けることにより、X線発生器52内に設けられるX線
発生管への供給電力を、予め設定されたしきい値未満に
制御して、X線曝射量を人体に影響がない程度の曝射量
に低下させる(ST4,ST10,ST15)。また、
その後、受光素子4b,赤外線センサ13の受光レベル
が変化して、監視領域に人体がないと判別されたとき
(ST5−Yes,ST11−Yes,ST16−Ye
s)、X線発生器52内に設けられるX線発生管への供
給電力を予め設定されたしきい値以上に制御して、X線
曝射量を元の曝射量に上昇させる(ST6,ST12,
ST17)。
In this case, by receiving a control signal from the control means 10, the power supplied to the X-ray generation tube provided in the X-ray generator 52 is controlled to be less than a preset threshold value. The X-ray irradiation dose is reduced to a dose that does not affect the human body (ST4, ST10, ST15). Also,
Thereafter, when the light receiving levels of the light receiving element 4b and the infrared sensor 13 change and it is determined that there is no human body in the monitoring area (ST5-Yes, ST11-Yes, ST16-Ye).
s) The power supplied to the X-ray generation tube provided in the X-ray generator 52 is controlled to be equal to or higher than a preset threshold value, and the X-ray irradiation amount is increased to the original irradiation amount (ST6). , ST12,
ST17).

【0046】また、上述したいずれの実施の形態におい
ても、図1,図6,図12に示すように、警報音を発生
させる警報手段としての警報器14を制御手段10と接
続し、図4(E) ,図11(B) ,図14(B) に示すよう
に、制御手段10が人体有りの判別信号を受けたことに
より、図4(K) ,図11(H) ,図14(H) に示すよう
に、制御手段10から警報器14に警報信号を送出し、
警報器14を作動させて警報音を発生させることとして
もよい(ST19)。これにより、不用意に手を入れた
作業者が警報音を聞いて、搬入口Rin又は搬出口Rout
から手を引き出すこととなる。
Also, in any of the above-described embodiments, as shown in FIGS. 1, 6 and 12, an alarm device 14 as an alarm device for generating an alarm sound is connected to the control device 10, and FIG. As shown in (E), FIG. 11 (B) and FIG. 14 (B), when the control means 10 receives the discrimination signal indicating the presence of a human body, FIG. 4 (K), FIG. 11 (H) and FIG. As shown in H), an alarm signal is sent from the control means 10 to the alarm device 14, and
The alarm 14 may be activated to generate an alarm sound (ST19). As a result, the worker who carelessly puts his hand hears the alarm sound, and carries in the entrance Rin or exit Rout.
From the hand.

【0047】[0047]

【発明の効果】以上説明したように本発明によるX線異
物検出装置では、人体の搬送路内への侵入を検知するこ
とにより、X線発生部からのX線曝射量を制御し、X線
被曝から未然に人体の安全化を図るという効果が得られ
る。
As described above, the X-ray foreign matter detection device according to the present invention controls the amount of X-ray exposure from the X-ray generation unit by detecting the intrusion of the human body into the transport path, and The effect of improving the safety of the human body from radiation exposure can be obtained.

【0048】また、投受光素子を用いることにより、既
存の装置に対しても容易に取り付けることができる。更
に、位置調整手段を設けることにより、順次搬送される
被検査物の高さが異なる場合であっても、最も高い被検
査物よりも高い位置に投受光素子を上昇させることがで
き、人体と被検査物の判別を容易にすることが可能であ
る。
Further, by using the light emitting / receiving element, it can be easily attached to an existing device. Further, by providing the position adjusting means, even when the height of the inspected object sequentially conveyed is different, it is possible to raise the light emitting and receiving element to a position higher than the highest inspected object, and It is possible to easily determine the inspection object.

【0049】また、投受光素子の設置位置を、被検査物
より上方に設置することにより、監視領域を通過する物
体が人体だけとなり、直ちに人体であると判別すること
ができる。
Further, by setting the mounting position of the light emitting / receiving element above the object to be inspected, the only object passing through the monitoring area is a human body, and it can be immediately determined that the object is a human body.

【0050】更に、赤外線センサを用いることにより、
監視領域を通過する物体が人体であるときのみ検出する
ことができ、被検査物との判別が容易となる。
Further, by using an infrared sensor,
The detection can be performed only when the object passing through the monitoring area is a human body, and it is easy to determine the object to be inspected.

【0051】また、警報手段を設けることにより、不用
意に手を入れた作業者に直ちに報知することができ、被
曝量を最小限に抑えることが可能である。
Further, by providing the alarm means, it is possible to immediately notify the worker who carelessly puts his hand, and it is possible to minimize the exposure dose.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明によるX線異物検出装置の第1実施の形
態を示す概略ブロック図である。
FIG. 1 is a schematic block diagram showing a first embodiment of an X-ray foreign matter detection device according to the present invention.

【図2】本発明によるX線異物検出装置の第1実施の形
態を示す正面図である。
FIG. 2 is a front view showing the first embodiment of the X-ray foreign matter detection device according to the present invention.

【図3】本発明によるX線異物検出装置の第1実施の形
態における搬送路内を示す図である。
FIG. 3 is a diagram showing the inside of a transport path in the first embodiment of the X-ray foreign matter detection device according to the present invention.

【図4】本発明によるX線異物検出装置の第1実施の形
態を示すタイミングチャートである。
FIG. 4 is a timing chart showing a first embodiment of the X-ray foreign matter detection device according to the present invention.

【図5】本発明によるX線異物検出装置の第1実施の形
態を示すフローチャートである。
FIG. 5 is a flowchart showing a first embodiment of the X-ray foreign matter detection device according to the present invention.

【図6】本発明によるX線異物検出装置の他の実施の形
態を示す概略ブロック図である。
FIG. 6 is a schematic block diagram showing another embodiment of the X-ray foreign matter detection device according to the present invention.

【図7】本発明によるX線異物検出装置の他の実施の形
態における搬送路内を示す図である。
FIG. 7 is a diagram showing the inside of a transport path in another embodiment of the X-ray foreign matter detection device according to the present invention.

【図8】本発明によるX線異物検出装置の他の実施の形
態を示すフローチャートである。
FIG. 8 is a flowchart showing another embodiment of the X-ray foreign matter detection device according to the present invention.

【図9】本発明によるX線異物検出装置の第2実施の形
態を示す部分拡大正面図である。
FIG. 9 is a partially enlarged front view showing a second embodiment of the X-ray foreign matter detection device according to the present invention.

【図10】本発明によるX線異物検出装置の第2実施の
形態を示すフローチャートである。
FIG. 10 is a flowchart showing a second embodiment of the X-ray foreign matter detection device according to the present invention.

【図11】本発明によるX線異物検出装置の第2実施の
形態を示すタイミングチャートである。
FIG. 11 is a timing chart showing a second embodiment of the X-ray foreign matter detection device according to the present invention.

【図12】本発明によるX線異物検出装置の第3実施の
形態を示す概略ブロック図である。
FIG. 12 is a schematic block diagram showing a third embodiment of the X-ray foreign matter detection device according to the present invention.

【図13】本発明によるX線異物検出装置の第3実施の
形態を示すフローチャートである。
FIG. 13 is a flowchart showing a third embodiment of the X-ray foreign matter detection device according to the present invention.

【図14】本発明によるX線異物検出装置の第3実施の
形態を示すタイミングチャートである。
FIG. 14 is a timing chart showing a third embodiment of the X-ray foreign matter detection device according to the present invention.

【図15】従来のX線異物検出装置を示す概略斜視図で
ある。
FIG. 15 is a schematic perspective view showing a conventional X-ray foreign matter detection device.

【図16】従来のX線異物検出装置の正面図である。FIG. 16 is a front view of a conventional X-ray foreign matter detection device.

【符号の説明】[Explanation of symbols]

1…X線異物検出装置,2…X線発生部,Rin…搬入
口,W…被検査物,53…X線検出部,Rout …搬出
口,3…判別手段,10…制御手段,4(4a,4b)
…投受光素子,t0 …設定通過時間,7…計時手段,1
1…位置調整手段,13…赤外線センサ,14…警報手
DESCRIPTION OF SYMBOLS 1 ... X-ray foreign substance detection apparatus, 2 ... X-ray generation part, R in ... Carriage entrance, W ... Inspection object, 53 ... X-ray detection part, R out ... Carriage exit, 3 ... Discrimination means, 10 ... Control means, 4 (4a, 4b)
... Emitting / receiving element, t 0 ... Set transit time, 7 ... Time measuring means, 1
DESCRIPTION OF SYMBOLS 1 ... Position adjustment means, 13 ... Infrared sensor, 14 ... Alarm means

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】 搬入口(Rin)から搬送される被検査物
(W)に対し、X線発生部(2)からX線を曝射して前
記X線の透過量をX線検出部(53)で検出し、搬出口
(Rout )から前記被検査物を搬出するX線異物検出装
置において、 前記搬入口又は/及び前記搬出口を監視領域とし、該監
視領域を通過する物体の有無を検出し、検出された前記
物体が人体であるか否かを判別する判別手段(3)と、 該判別手段により前記物体が前記人体であると判別され
たとき、前記X線発生部から曝射される前記X線曝射量
を所定量未満に制御する制御手段(10)と、を具備す
ることを特徴とするX線異物検出装置。
An X-ray is emitted from an X-ray generation section to an inspection object transported from a carry- in entrance, and a transmission amount of the X-ray is detected by an X-ray detection section. (53) An X-ray foreign matter detection device that detects the object at (53) and carries out the inspection object from a carry-out exit (R out ). Discriminating means (3) for detecting the presence / absence of the object and discriminating whether or not the detected object is a human body; and when the discriminating means determines that the object is the human body, the X-ray generating unit A control unit (10) for controlling the amount of X-ray irradiation to be less than a predetermined amount.
【請求項2】 前記判別手段は、対向し合う一対の投受
光素子(4a,4b)と、 前記被検査物が前記監視領域を通過する時間に相当する
予め設定された設定通過時間(t0 )を、前記受光素子
の受光レベルが所定のレベルから低レベルになった時点
から計時する計時手段(7)と、からなり、 前記設定通過時間経過後における前記受光素子の受光レ
ベルが前記低レベルであるときに、前記監視領域を通過
する前記物体を前記人体と判別し、前記設定通過時間経
過後における前記受光素子の受光レベルが前記所定のレ
ベルであるときに、前記監視領域を通過する前記物体を
前記被検査物と判別することを特徴とする請求項1記載
のX線異物検出装置。
2. The method according to claim 1, wherein the discriminating means includes a pair of opposing light emitting and receiving elements (4a, 4b) and a predetermined set transit time (t 0) corresponding to a time when the inspection object passes through the monitoring area. ) From the time when the light receiving level of the light receiving element is changed from a predetermined level to a low level. 7) The light receiving level of the light receiving element after the lapse of the set passage time is the low level When the object passing through the monitoring area is determined to be the human body, and when the light receiving level of the light receiving element after the elapse of the set passage time is the predetermined level, the object passing through the monitoring area is 2. The X-ray foreign matter detection device according to claim 1, wherein an object is determined to be the inspection object.
【請求項3】 前記一対の投受光素子を高さ方向に調整
自在な位置調整手段(11)を有し、 前記制御手段は、前記判別手段が前記物体を前記被検査
物と判別したときに、前記位置調整手段に前記一対の投
受光素子の位置を上昇させるように制御することを特徴
とする請求項2記載のX線異物検出装置。
3. A position adjusting unit (11) capable of adjusting the pair of light emitting and receiving elements in a height direction, wherein the control unit is configured to determine whether the object is the object to be inspected by the determining unit. 3. The X-ray foreign matter detecting device according to claim 2, wherein the position adjusting means controls the position of the pair of light emitting and receiving elements to be raised.
【請求項4】 搬入口(Rin)から搬送される被検査物
(W)に対し、X線発生部(2)からX線を曝射して前
記X線の透過量をX線検出部(53)で検出し、搬出口
(Rout )から前記被検査物を搬出するX線異物検出装
置において、 前記被検査物より上方の前記搬入口又は/及び前記搬出
口部分を監視領域とし、該監視領域を通過する物体の有
無を検出し、検出された前記物体を人体であると判別す
る判別手段(3)と、 該判別手段により前記人体が判別されたとき、前記X線
発生部から曝射される前記X線曝射量を所定量未満に制
御する制御手段(10)と、を具備することを特徴とす
るX線異物検出装置。
4. An X-ray detecting section that emits X-rays from an X-ray generating section (2) to an inspection object (W) conveyed from a carry- in entrance (R in ) and detects an X-ray transmission amount. (53) In the X-ray foreign matter detection device that detects the object at (53) and unloads the inspection object from the unloading port (R out ), the loading port or / and the unloading port portion above the inspection object is a monitoring area; Determining means (3) for detecting the presence or absence of an object passing through the monitoring area and determining the detected object as a human body; and when the human body is determined by the determining means, A control unit (10) for controlling the amount of X-ray irradiation to be less than a predetermined amount.
【請求項5】 前記判別手段は、対向し合う一対の投受
光素子(4a,4b)であることを特徴とする請求項4
記載のX線異物検出装置。
5. The apparatus according to claim 4, wherein said discriminating means comprises a pair of opposing light emitting / receiving elements (4a, 4b).
An X-ray foreign matter detection device as described in the above.
【請求項6】 前記判別手段は、赤外線センサ(13)
であることを特徴とする請求項1記載のX線異物検出装
置。
6. The infrared sensor (13)
2. The X-ray foreign matter detector according to claim 1, wherein:
【請求項7】 前記制御手段は、前記X線曝射量が前記
所定量未満に制御された後、前記検出手段からの検出信
号に基づき、前記人体と判別された前記物体がないと検
出されたときに、前記X線曝射量を前記所定量以上に制
御することを特徴とする請求項1〜6のいずれかに記載
のX線異物検出装置。
7. The control means, after the X-ray irradiation amount is controlled to be less than the predetermined amount, detects that the object determined to be the human body does not exist based on a detection signal from the detection means. The X-ray foreign matter detection device according to claim 1, wherein the X-ray irradiation amount is controlled to be equal to or more than the predetermined amount when the X-ray is irradiated.
【請求項8】 警報音を発生する警報手段(14)を有
し、 前記制御手段は、前記判別手段により前記物体が前記人
体と判別されたとき、前記警報手段に前記警報音を発生
させるように制御することを特徴とする請求項1〜7の
いずれかに記載のX線異物検出装置。
8. An alarm means (14) for generating an alarm sound, wherein said control means causes said alarm means to generate said alarm sound when said discriminating means discriminates said object from said human body. The X-ray foreign matter detection device according to any one of claims 1 to 7, wherein the X-ray foreign matter detection device is controlled to:
JP2000130926A 2000-04-28 2000-04-28 X-ray foreign object detection device Expired - Lifetime JP3737929B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007192605A (en) * 2006-01-18 2007-08-02 Ishida Co Ltd X-ray inspection device
JP2018165634A (en) * 2017-03-28 2018-10-25 アンリツインフィビス株式会社 X-ray inspection device
JP2020144003A (en) * 2019-03-06 2020-09-10 アンリツインフィビス株式会社 X-ray inspection device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007192605A (en) * 2006-01-18 2007-08-02 Ishida Co Ltd X-ray inspection device
JP2018165634A (en) * 2017-03-28 2018-10-25 アンリツインフィビス株式会社 X-ray inspection device
JP2020144003A (en) * 2019-03-06 2020-09-10 アンリツインフィビス株式会社 X-ray inspection device
JP7108564B2 (en) 2019-03-06 2022-07-28 アンリツ株式会社 X-ray inspection device

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