JPH033094U - - Google Patents
Info
- Publication number
- JPH033094U JPH033094U JP6361189U JP6361189U JPH033094U JP H033094 U JPH033094 U JP H033094U JP 6361189 U JP6361189 U JP 6361189U JP 6361189 U JP6361189 U JP 6361189U JP H033094 U JPH033094 U JP H033094U
- Authority
- JP
- Japan
- Prior art keywords
- output
- level
- comparator
- amplifier
- optical sensor
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000010304 firing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 1
Landscapes
- Air Transport Of Granular Materials (AREA)
- Fire-Detection Mechanisms (AREA)
Description
第１図は本考案の発火検知器の一実施例を示す
回路図、第２図は本考案の発火検知器の取付対象
の一例を示す搬送ダクトの概略図である。第３図
は従来の発火検知器を示す回路図、第４図ａ，ｂ
は火花検知器の入力信号レベルと火花検知レベル
ｄｖ／ｄｔ、飽和検知レベル、ｖｋの関係を示し
た図である。
７……光センサ、８……直流増幅器、９……微
分回路、１０……第１比較器、１０ａ……基準レ
ベル設定器、１１……禁止回路、１２……出力回
路、２０……発火検知器、２１……第２比較器、
２１ａ……飽和検知レベル設定器、２２……オア
ゲート。
FIG. 1 is a circuit diagram showing an embodiment of the ignition detector of the present invention, and FIG. 2 is a schematic diagram of a conveyance duct showing an example of an object to which the ignition detector of the present invention is attached. Figure 3 is a circuit diagram showing a conventional ignition detector, Figure 4 a, b
is a diagram showing the relationship between the input signal level of the spark detector, the spark detection level dv/dt, the saturation detection level, and vk. 7... Optical sensor, 8... DC amplifier, 9... Differential circuit, 10... First comparator, 10a... Reference level setter, 11... Inhibition circuit, 12... Output circuit, 20... Ignition Detector, 21... second comparator,
21a... Saturation detection level setter, 22... OR gate.
Claims (1)
で圧送する搬送ダクトに取付けられた光センサと
、 この光センサの直流増幅器と、 この直流増幅器の出力変化量を検出する微分回
路と、 基準レベル設定器を備えこの微分回路の出力が
発火基準レベルを超えたとき第１比較器と、 飽和検知レベル設定器を備え上記直流増幅器の
出力が所定の飽和検知レベルを超えたとき出力す
る第２比較器と、 第１又は第２比較器が出力したとき検知出力を
発生する出力回路とを具備したことを特徴とする
発火検知器。[Claims for Utility Model Registration] An optical sensor attached to a conveying duct that pumps fine conveyed objects such as fibrous raw cotton with high-speed air flow, a DC amplifier of this optical sensor, and a change in the output of this DC amplifier. a differential circuit for detecting the amount of electricity, and a reference level setter, and when the output of the differential circuit exceeds the firing reference level, a first comparator and a saturation detection level setter are provided, and the output of the DC amplifier reaches a predetermined saturation detection level. An ignition detector comprising: a second comparator that outputs an output when the level exceeds the level; and an output circuit that generates a detection output when the first or second comparator outputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6361189U JPH033094U (en) | 1989-05-30 | 1989-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6361189U JPH033094U (en) | 1989-05-30 | 1989-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH033094U true JPH033094U (en) | 1991-01-14 |
Family
ID=31593817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6361189U Pending JPH033094U (en) | 1989-05-30 | 1989-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH033094U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49110926U (en) * | 1973-01-19 | 1974-09-21 | ||
| JPS5256918U (en) * | 1975-10-23 | 1977-04-25 | ||
| JPS6443659A (en) * | 1987-08-07 | 1989-02-15 | Kurose Shoten Kk | Panel assembly |
-
1989
- 1989-05-30 JP JP6361189U patent/JPH033094U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49110926U (en) * | 1973-01-19 | 1974-09-21 | ||
| JPS5256918U (en) * | 1975-10-23 | 1977-04-25 | ||
| JPS6443659A (en) * | 1987-08-07 | 1989-02-15 | Kurose Shoten Kk | Panel assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR840005214A (en) | Cooker temperature detector | |
| ES2124931T3 (en) | DEVICE FOR THE INDICATION OF THE DEGREE OF DIRTING OF A FILTER. | |
| ATE84368T1 (en) | SENSOR AMPLIFIER AND ENHANCEMENT DEVICE USING DIGITAL TECHNIQUES. | |
| FR2560701B1 (en) | DIFFERENTIAL PRESSURE ACCESS DETECTOR | |
| KR880010563A (en) | Input Processing Circuit for Air Pro Sensor | |
| GB2112928A (en) | Sensing surges in gas turbines | |
| JPS55156262A (en) | Ignition lead angle controller | |
| JPH02115571U (en) | ||
| JPH01132934U (en) | ||
| JPS5687805A (en) | Sensor for approaching object | |
| JPS639695U (en) | ||
| JPS56148034A (en) | Knock controller | |
| JPH01142468U (en) | ||
| JPS5637842A (en) | Tape end detecting circuit | |
| JPS636362U (en) | ||
| JPS57165719A (en) | Device for detecting knocking in internal combustion engine | |
| JPH01146146U (en) | ||
| JPS63173647U (en) | ||
| JPS648842U (en) | ||
| JPS6326130U (en) | ||
| JPS6074805U (en) | Roll surface thermometer | |
| JPH01142820U (en) | ||
| JPS6218648U (en) | ||
| JPS63111044U (en) | ||
| JPS6390136U (en) |