JPS638630U - - Google Patents
Info
- Publication number
- JPS638630U JPS638630U JP10351586U JP10351586U JPS638630U JP S638630 U JPS638630 U JP S638630U JP 10351586 U JP10351586 U JP 10351586U JP 10351586 U JP10351586 U JP 10351586U JP S638630 U JPS638630 U JP S638630U
- Authority
- JP
- Japan
- Prior art keywords
- nitrogen
- detection circuit
- residual
- temperature reference
- high temperature
- 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.)
- Pending
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Radiation Pyrometers (AREA)
Description
第１図は本考案の窒素残留検出回路の原理ブロ
ツク図、第２図は一実施例の窒素残留検出回路の
ブロツク図、第３図ａ，ｂは一実施例の窒素残留
検出回路の信号波形図、第４図は従来の窒素残留
検出回路のブロツク図、第５図ａ，ｂは従来の窒
素残留検出回路の動作説明のための信号波形図で
ある。
図において、１は目標物体、２は走査部、３―
１，３―２は集光レンズ、４はチヨツパー、５は
低温基準熱源、６は高温基準熱源、７は赤外線検
知器、８は窒素容器、１０は映像信号検出回路、
１１はスライスレベル発生回路、１２はスライス
回路、１３はアラーム発生回路、１６は高温基準
信号検出回路、１７は温度差検出手段、１８は増
幅器、１９は比較回路、２０は差動アンプを示し
ている。
Figure 1 is a principle block diagram of the nitrogen residual detection circuit of the present invention, Figure 2 is a block diagram of a nitrogen residual detection circuit of one embodiment, and Figures 3a and b are signal waveforms of the nitrogen residual detection circuit of one embodiment. 4 are block diagrams of a conventional nitrogen residual detection circuit, and FIGS. 5a and 5b are signal waveform diagrams for explaining the operation of the conventional nitrogen residual detection circuit. In the figure, 1 is the target object, 2 is the scanning unit, 3-
1, 3-2 is a condenser lens, 4 is a chopper, 5 is a low temperature reference heat source, 6 is a high temperature reference heat source, 7 is an infrared detector, 8 is a nitrogen container, 10 is a video signal detection circuit,
11 is a slice level generation circuit, 12 is a slice circuit, 13 is an alarm generation circuit, 16 is a high temperature reference signal detection circuit, 17 is a temperature difference detection means, 18 is an amplifier, 19 is a comparison circuit, and 20 is a differential amplifier. There is.
Claims (1)
る赤外線を基準として目標物体１からの赤外線を
検知して検知信号を出力する窒素冷却を施された
赤外線検知器７の、前記窒素の残留を検出する窒
素残留検出回路であつて、 該窒素残留検出回路は、前記高温基準検知信号
を検出する高温基準信号検出回路１６を備え、該
高温基準検出信号の電圧と、高温基準熱源の輻射
温度と外囲温度との温度差によつて作成された電
圧とを比較し、その比較値より赤外線検知器の窒
素残留を検出するようにしたことを特徴とする赤
外線検知器の窒素残留検出回路。[Claims for Utility Model Registration] An infrared detector 7 cooled with nitrogen that detects infrared rays from a target object 1 based on infrared rays emitted from high and low temperature reference heat sources 6 and 5 and outputs a detection signal. A nitrogen residual detection circuit for detecting the residual nitrogen, the nitrogen residual detection circuit including a high temperature reference signal detection circuit 16 for detecting the high temperature reference detection signal, and a voltage of the high temperature reference detection signal; An infrared detector characterized in that the radiant temperature of a high temperature reference heat source is compared with a voltage created by the temperature difference between the ambient temperature and the residual nitrogen in the infrared detector is detected from the comparison value. Nitrogen residual detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10351586U JPS638630U (en) | 1986-07-04 | 1986-07-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10351586U JPS638630U (en) | 1986-07-04 | 1986-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS638630U true JPS638630U (en) | 1988-01-20 |
Family
ID=30976142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10351586U Pending JPS638630U (en) | 1986-07-04 | 1986-07-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS638630U (en) |
-
1986
- 1986-07-04 JP JP10351586U patent/JPS638630U/ja active Pending
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