JPS58151531A - Thermography device - Google Patents
Thermography deviceInfo
- Publication number
- JPS58151531A JPS58151531A JP57034584A JP3458482A JPS58151531A JP S58151531 A JPS58151531 A JP S58151531A JP 57034584 A JP57034584 A JP 57034584A JP 3458482 A JP3458482 A JP 3458482A JP S58151531 A JPS58151531 A JP S58151531A
- Authority
- JP
- Japan
- Prior art keywords
- scanning
- signal
- circuit
- image
- video signal
- 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
Links
- 238000001931 thermography Methods 0.000 title claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000003287 optical effect Effects 0.000 abstract description 6
- 230000003068 static effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/20—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only
- H04N23/23—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only from thermal infrared radiation
Landscapes
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Radiation Pyrometers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は短い周期で周期的に運動又は温度変化する被写
体について、該周期の任意の位相における静止状態の温
度分布像を得ることのできるサーモグラフィ装置に関廿
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermography apparatus capable of obtaining a temperature distribution image of a stationary state at any phase of the period of an object whose temperature changes or moves periodically in a short period. be.
サーモグラフィ装置では、被写体上に赤外線検出器の像
スポットを結像すると共に該像スポットをラスク走査し
、走査に伴なって検出器から得られる赤外線映像信号を
表示手段へ送って被写体の温度分布像を取得するように
している。ところが、この走査は鏡等を用いて機械的に
行われるため、ある程度以上速度を上げることができず
、水平走査周期1/120秒、走査@240本として1
画面走査に2秒程度以上かかることは避けられない。In a thermography device, an image spot of an infrared detector is formed on a subject, the image spot is scanned in a rask, and an infrared image signal obtained from the detector is sent to a display means as a result of scanning, and a temperature distribution image of the subject is displayed. I'm trying to get it. However, since this scanning is performed mechanically using mirrors, etc., it is not possible to increase the speed beyond a certain level, and the horizontal scanning period is 1/120 seconds, and the scanning rate is 1/240 lines.
It is unavoidable that screen scanning takes about 2 seconds or more.
したがって従来は、静止状態又はそれに近い被写体及び
温度変化の殆んどない被写体でなければ温度分布像を得
ることはできなかった。Therefore, conventionally, a temperature distribution image could not be obtained unless the subject was in a stationary state or nearly so, and the subject had almost no temperature change.
本発明はこの点に鑑みてなされたものであり、検出器の
像スポットを周期的に運動又は温度守化している被写体
上で上記周期よりも十分短い周期でくり返し水平走査す
るための水平−走査手段と、上記被写体の変化に同期し
て上記像スポットをψ直走査するための垂直走査手段と
、十配水平及び垂直走査手段による走査に伴なって上記
検出器から得られる赤外線映像信号と前記被写体の変化
に同期した同期信号とを同時に記憶する記憶手段と、該
記憶手段に記憶された映像信号中から上記同期信号と特
定の位相関係にある映像信号を取出す手段と、取出され
た映像信号が供給される表示手段とを備えることにより
、任意のタイミングにおける静止状態の温度分布像を得
ることのできるサーモグラフィ装置を提供するものであ
る。以下図面を用いて本発明を詳説する。The present invention has been made in view of this point, and is a horizontal-scanning method for repeatedly horizontally scanning the image spot of a detector on a subject that is periodically moving or temperature-controlled at a cycle sufficiently shorter than the above-mentioned cycle. means, vertical scanning means for vertically scanning the image spot in synchronization with changes in the subject, an infrared image signal obtained from the detector in conjunction with scanning by the horizontal and vertical scanning means; Storage means for simultaneously storing a synchronization signal synchronized with changes in a subject; means for extracting a video signal having a specific phase relationship with the synchronization signal from among the video signals stored in the storage means; and the extracted video signal. The present invention provides a thermography apparatus that can obtain a temperature distribution image in a stationary state at any timing. The present invention will be explained in detail below using the drawings.
第1図は本発明の一実施例の構成を示すブロック図であ
り、図中1は赤外線検出器、2はモータ3によって回転
される被写体、4は該検出器1の像スポットZを被写体
2上に結像するためのレンズである。該像スポットZは
光スキャナ5により被写体2上で水平及び垂直走査され
、それに伴なって検出器1から得られる赤外線映像信号
は増幅器6.リニアライザ等を含む処理回路7及び変換
回路8を介してビデオテープレコーダ(VTR)9の映
像入力端子Aへ供給される。前記モータ3は回転に同期
した同期信号Sを発生し、該同I!l信号SはVTR9
の音声入力端子Bへ送られて記録されると共に、前記光
スキャナ5の垂直走査を行うための垂直走査回路1oへ
送られる。11は光スキャナ5の水平走査を行うための
水平走査回路である。FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, 1 is an infrared detector, 2 is a subject rotated by a motor 3, and 4 is a block diagram showing an image spot Z of the detector 1 on the subject 2. This is a lens to form an image on top. The image spot Z is horizontally and vertically scanned on the subject 2 by the optical scanner 5, and the infrared image signal obtained from the detector 1 is sent to the amplifier 6. The signal is supplied to a video input terminal A of a video tape recorder (VTR) 9 via a processing circuit 7 including a linearizer and the like and a conversion circuit 8. The motor 3 generates a synchronization signal S synchronized with its rotation, and the same I! l signal S is VTR9
The signal is sent to the audio input terminal B of , where it is recorded, and is also sent to the vertical scanning circuit 1o for vertical scanning of the optical scanner 5. 11 is a horizontal scanning circuit for horizontal scanning of the optical scanner 5;
再生時VTR9の音声出力端子B′から取出された同期
信号Sは陰極線!! (CRT)表示装置12へ垂直走
査を1ステツプ進めるための信号として送られる。また
、VTR9の映像出力端子へ−から取出された映像信号
も逆変換回路13.ゲート回路14を介してCRT表示
装置12へ送られる。15は該映像信号から水平同期信
号りを分離し、CRT表示装置12へ送るための同期分
離回路、16は音声出力端子B′から取出された同期信
号Sに基づき該同期信号Sから所定時間後にゲート回路
14を1水平走査期間開くゲート信号を発生する可変遅
延回路である。The synchronizing signal S taken out from the audio output terminal B' of the VTR 9 during playback is a cathode ray! ! (CRT) The signal is sent to the display device 12 as a signal for advancing vertical scanning by one step. Further, the video signal taken out from the video output terminal of the VTR 9 is also transferred to the inverse conversion circuit 13. The signal is sent to the CRT display device 12 via the gate circuit 14. 15 is a sync separation circuit for separating the horizontal sync signal from the video signal and sending it to the CRT display device 12; 16 is a sync separation circuit for separating the horizontal sync signal from the video signal and sending it to the CRT display device 12; This is a variable delay circuit that generates a gate signal that opens the gate circuit 14 for one horizontal scanning period.
上述の如き構成において、光スキャナ5は水平走査回路
11によって1A120秒の周期で繰返し水平走査を行
い、この水平走査は同期信号Sが発生するまで同一位置
で繰返される。そして同期信号Sが発生すると、垂直走
査回路10により垂直走査が1ステツプ進められるため
、走査線1本ずれた次の位置で再び水平走査が繰返し行
われる。In the above-described configuration, the optical scanner 5 repeatedly performs horizontal scanning at a cycle of 1A120 seconds by the horizontal scanning circuit 11, and this horizontal scanning is repeated at the same position until the synchronization signal S is generated. When the synchronizing signal S is generated, the vertical scanning circuit 10 advances the vertical scanning by one step, so that the horizontal scanning is repeated again at the next position shifted by one scanning line.
従って被写体2が仮に10)−12(周期:100m5
)で第2図(a )に示す様に回転しているとすれば、
水平走査は同図(b )に示す様に1周期の間に12回
行われることになり、同期信号Sが同図(C)に示す様
なタイミングで100118毎に発生するとすれば、垂
直走査もそれに同期して同図(d )に示す様に水平走
査12回毎に1ステツプずつ進められることになる。こ
の様な走査に伴なって得られた同図(e)に示す映像信
号は変換器8によってVTR9に記録され得る様な形に
変換されてVTR9へ送られる。Therefore, if subject 2 is 10)-12 (period: 100m5
) is rotating as shown in Figure 2 (a), then
Horizontal scanning is performed 12 times during one period as shown in (b) of the same figure, and if the synchronization signal S is generated every 100,118 times as shown in (c) of the same figure, vertical scanning In synchronization with this, as shown in FIG. 3(d), one step is advanced every 12 horizontal scans. The video signal shown in FIG. 5(e) obtained through such scanning is converted by the converter 8 into a form that can be recorded on the VTR 9, and is sent to the VTR 9.
ここで被写体の1回転の間に得られる12の映像信号V
a、、Vb、Vc、−−−Vk、Vlについて、各映像
信号を取得した時の走査方向と被写体2の向きを考える
と、第3図で示す様に一定の走査方向(実線の矢印)に
対し、(a)→(b )→(C)→・・・→(1()→
(1)と360°/12=30°ずつ位相がずれている
。そして被写体の次の1回転の時には全く同じタイミン
グで走査線1本分ずれた位置(第3図において破線で示
す)で水平走査が12回行われ、以下全く同様に被写体
の1回転毎に走査位置を1本ずつずらして水平走査が行
われる。従って垂直走査が1ステツプ進められた後1回
目の水平走査で得られた映像信号va 、 va−・・
・を抜き出してそれにより画像を形成すれば、その画像
は第3図においてa゛で示す位相の被写体像となる。2
回目の水平走査′C−得られた映像信号vb 、 vb
’・・・を抜き出せば第3図においてbで示す位相の
被写体像が得られ、抜き出すタイミングを適宜設定すれ
ば第一3図aから1までの任意の位相における被写体の
温度分布像を作成することができる。Here, 12 video signals V obtained during one rotation of the subject
a,, Vb, Vc, ---Vk, Vl, considering the scanning direction and orientation of subject 2 when acquiring each video signal, the scanning direction is constant (solid arrow) as shown in Fig. 3. For, (a)→(b)→(C)→...→(1()→
The phase is shifted from (1) by 360°/12=30°. Then, during the next rotation of the subject, horizontal scanning is performed 12 times at exactly the same timing at a position shifted by one scanning line (indicated by a broken line in Figure 3), and in the same manner, scanning is performed every other rotation of the subject. Horizontal scanning is performed by shifting the position one line at a time. Therefore, the video signals va, va-... obtained in the first horizontal scan after the vertical scan is advanced by one step.
. If an image is formed by extracting . 2
1st horizontal scan 'C - Obtained video signals vb, vb
By extracting '..., you can obtain an image of the object at the phase indicated by b in Figure 3, and if you set the extraction timing appropriately, you can create a temperature distribution image of the object at any phase from a to 1 in Figure 13. be able to.
第1図におけるVTR9の出力端子A−,B−には上述
の様な映像信号の抜き出し及び像の表示を行うための構
成が接続されている。即ちVTR9の再生時、変換回路
8と逆の変換を行う逆変換回路13からは第2図(e)
の映像信号が、又端子B′からは同図(C)の同期信号
Sが夫々時間関係もそのままに再生される。表示装置1
2は分離回路15において分離された水平同期信号りに
基づいて第2図(b)と全く同様な水平走査を行うと共
に、再生された同期信号によって垂直走査が第2図(d
)と全く同様に歩進される。そして可変遅延回路16
は、第3図aの位相の像を得たい時には第2図(f)に
示す様に同期信号SからtaMれて1水平走査期間をカ
バーするゲート信号を発しゲート回路14をその期間だ
け開くため、表示装置12には映像信号Va、Va−,
・・・が送られ、従って第3図aの位相の被写体像が表
示されることになる。遅延時間【aを適宜設定すれば、
第3図a〜1の任意の位相の像が得られることは言うま
でもない。その時遅延時間を段階的に長くしてゆき、像
を第3図におけるa−+b−+c→・・・→1と順次表
示してゆけば、分解写真的な被写体の温度分布像を表示
することができる。The configuration for extracting a video signal and displaying an image as described above is connected to the output terminals A- and B- of the VTR 9 in FIG. That is, during playback on the VTR 9, the inverse conversion circuit 13, which performs the opposite conversion to the conversion circuit 8, outputs the signal as shown in FIG. 2(e).
The video signal shown in FIG. 1 is reproduced from terminal B', and the synchronization signal S shown in FIG. Display device 1
2 performs horizontal scanning exactly as shown in FIG. 2(b) based on the horizontal synchronizing signal separated in the separation circuit 15, and performs vertical scanning as shown in FIG. 2(d) using the reproduced synchronizing signal.
) is incremented in exactly the same way. and variable delay circuit 16
When it is desired to obtain an image with the phase shown in Fig. 3a, it emits a gate signal that covers one horizontal scanning period by taM from the synchronizing signal S, as shown in Fig. 2(f), and opens the gate circuit 14 for that period. Therefore, the display device 12 displays video signals Va, Va-,
. . , and therefore the object image having the phase shown in FIG. 3a is displayed. If the delay time [a is set appropriately,
It goes without saying that images of any phase shown in FIGS. 3a to 1 can be obtained. At that time, if the delay time is increased step by step and the images are displayed sequentially as a-+b-+c→...→1 in Fig. 3, a temperature distribution image of the subject can be displayed like a decomposed photograph. Can be done.
尚、上記実施例は被写体が回転づる場合であったが、周
期的な往復運動即ち振動する場合でも、又周期的に温度
変化する場合でもその周期の任意の位相における被写体
像を得ることができ、要づるに周期的な変化を示す被写
体であれば良い。Although the above embodiment deals with a case in which the subject is rotating, it is possible to obtain an image of the subject at any phase of the period even if the subject is in periodic reciprocating motion, that is, vibrates, or if the temperature changes periodically. In short, any object that shows periodic changes may be used.
又、上記実施例ではVTR9を使用したため同期信号S
を音声チャンネルに記録するようにしたが、他の記録手
段例えばデータレコーダを使用する場合には同期信号用
に1チヤンネルを確保する必要があることは言うまでも
ない。Also, in the above embodiment, since VTR9 was used, the synchronization signal S
However, when using other recording means such as a data recorder, it goes without saying that it is necessary to reserve one channel for the synchronization signal.
第1図は本発明の一実施例の構成を示すブロック図、第
2図はその動作を説明するための波形図、第3図は被写
体の向きと走査方向との関係を説明するための図である
。
1:赤外線検出器、2:被写体、3:モータ、5:光ス
キャナ、9 : VTR110,11:電源、12:C
RT表示装置、14:ゲート回路、15:同期分離回路
、16:可変遅延回路。FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a waveform diagram for explaining its operation, and FIG. 3 is a diagram for explaining the relationship between the orientation of the subject and the scanning direction. It is. 1: Infrared detector, 2: Subject, 3: Motor, 5: Optical scanner, 9: VTR110, 11: Power supply, 12: C
RT display device, 14: gate circuit, 15: synchronous separation circuit, 16: variable delay circuit.
Claims (1)
又は温度変化している被写体上で上記周期よりも十分短
い周期でくり返し水平走査するための水平走査手段と、
上記被写体の変化に同期して上記像スポットを垂直走査
するための垂直走査手段と、上記水平及び垂直走査手段
による走査に伴なって上記検出器から得られる赤外線映
像信号と前記被写体の変化に同期した同期信号とを同時
に記憶する記憶手段と、該記憶手段に記憶された映像信
号中から上記同期信号と特定の位相関係にある映像信号
を取出す手段と、取出された映像信号が供給される表示
手段とを備えたことを特徴とするサーモグラフィ装置。an infrared detector; horizontal scanning means for repeatedly horizontally scanning an image spot of the detector on a subject that is periodically moving or changing temperature at a cycle sufficiently shorter than the above-mentioned cycle;
Vertical scanning means for vertically scanning the image spot in synchronization with changes in the object, and an infrared image signal obtained from the detector in conjunction with scanning by the horizontal and vertical scanning means, synchronized with changes in the object. a storage means for simultaneously storing a synchronization signal, a means for extracting a video signal having a specific phase relationship with the synchronization signal from among the video signals stored in the storage means, and a display to which the extracted video signal is supplied. A thermography device characterized by comprising: means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57034584A JPS58151531A (en) | 1982-03-05 | 1982-03-05 | Thermography device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57034584A JPS58151531A (en) | 1982-03-05 | 1982-03-05 | Thermography device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58151531A true JPS58151531A (en) | 1983-09-08 |
JPH0215006B2 JPH0215006B2 (en) | 1990-04-10 |
Family
ID=12418365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57034584A Granted JPS58151531A (en) | 1982-03-05 | 1982-03-05 | Thermography device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58151531A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60105930A (en) * | 1983-11-14 | 1985-06-11 | Nippon Denki Sanei Kk | Infrared temperature distribution measuring apparatus |
-
1982
- 1982-03-05 JP JP57034584A patent/JPS58151531A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60105930A (en) * | 1983-11-14 | 1985-06-11 | Nippon Denki Sanei Kk | Infrared temperature distribution measuring apparatus |
JPH0345779B2 (en) * | 1983-11-14 | 1991-07-12 | Nec San Ei Instruments |
Also Published As
Publication number | Publication date |
---|---|
JPH0215006B2 (en) | 1990-04-10 |
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