JPS6355981U - - Google Patents
Info
- Publication number
- JPS6355981U JPS6355981U JP15082186U JP15082186U JPS6355981U JP S6355981 U JPS6355981 U JP S6355981U JP 15082186 U JP15082186 U JP 15082186U JP 15082186 U JP15082186 U JP 15082186U JP S6355981 U JPS6355981 U JP S6355981U
- Authority
- JP
- Japan
- Prior art keywords
- fabric
- ultrasonic waves
- amplifying
- passed
- attenuating
- 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
- 239000004744 fabric Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Description
第１図はこの考案の一実施例を示すブロツク図
、第２図は第１図に示したものの動作を示すフロ
ーチヤート、第３図は従来の布検知装置の感度調
整装置を示すブロツク図である。
１０……検知手段、１０ａ……投光器、１０ｂ
……受光器、１１……増幅器手段としての増幅器
、１２……減衰手段としてのアツテネー、１４…
…制御手段としてのマイクロコンピユータ。
Fig. 1 is a block diagram showing an embodiment of this invention, Fig. 2 is a flowchart showing the operation of the device shown in Fig. 1, and Fig. 3 is a block diagram showing a conventional sensitivity adjustment device for a cloth detection device. be. 10... Detection means, 10a... Floodlight, 10b
...Photodetector, 11...Amplifier as amplifier means, 12...Attenuator as attenuation means, 14...
...Microcomputer as control means.
Claims (1)
前記布を透過した超音波を受けてその透過量に応
じた信号を出力する受信器とより成る布検知手段
と、前記受信器からの出力信号を布検知のための
基準値以上に増幅する増幅手段と、この増幅手段
とからの出力信号を減衰させる減衰手段と、この
減衰手段からの出力信号値を前記基準値と一致さ
せるよう減衰手段の減衰率を制御する減衰率制御
手段とを備えて成る布検知装置の感度自動調整装
置。 fabric detection means comprising a transmitter that generates a predetermined amount of ultrasonic waves to the fabric; a receiver that receives the ultrasonic waves that have passed through the fabric and outputs a signal according to the amount of the ultrasonic waves that have passed through the fabric; an amplifying means for amplifying an output signal to a level greater than a reference value for cloth detection; an attenuating means for attenuating an output signal from the amplifying means; and attenuation rate control means for controlling the attenuation rate of the means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15082186U JPH0131174Y2 (en) | 1986-09-30 | 1986-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15082186U JPH0131174Y2 (en) | 1986-09-30 | 1986-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6355981U true JPS6355981U (en) | 1988-04-14 |
| JPH0131174Y2 JPH0131174Y2 (en) | 1989-09-25 |
Family
ID=31067309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15082186U Expired JPH0131174Y2 (en) | 1986-09-30 | 1986-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0131174Y2 (en) |
-
1986
- 1986-09-30 JP JP15082186U patent/JPH0131174Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0131174Y2 (en) | 1989-09-25 |
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