JPH0368093U - - Google Patents
Info
- Publication number
- JPH0368093U JPH0368093U JP12965989U JP12965989U JPH0368093U JP H0368093 U JPH0368093 U JP H0368093U JP 12965989 U JP12965989 U JP 12965989U JP 12965989 U JP12965989 U JP 12965989U JP H0368093 U JPH0368093 U JP H0368093U
- Authority
- JP
- Japan
- Prior art keywords
- photo sensor
- detection object
- detection
- detection device
- output voltage
- 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
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000005070 sampling Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Controlling Sheets Or Webs (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Description
第１図は反射型フオトセンサーの検出回路の構
成例を示す図、第２図はセンサー出力ハイレベル
時“検出物体あり”と判定するフロー図、第３図
はセンサー出力ローレべル時“検出物体あり”と
判定するフロー図、第４図は本考案によるスレツ
シユ設定の概略説明図、第５図はセンサー出力電
圧のバラツキが少ない場合の分布例図、第６図は
センサー出力電圧のバラツキが大きい場合の分布
例図、である。
１……発光素子、２……受光素子、３……検出
物体、５……Ａ／Ｄ変換器、６……ＣＰＵ、７…
…メモリ、８……Ｉ／Ｏ、９……検出物体なしの
場合の最大出力電圧位置、１０……検出物体あり
の場合の最小出力電圧位置、Ｖ０……検出物体の
反射光量に応じた出力電圧。
Figure 1 is a diagram showing an example of the configuration of a detection circuit for a reflective photo sensor. Figure 2 is a flowchart for determining that an object is detected when the sensor output is at a high level. Figure 3 is a flowchart for determining that an object is detected when the sensor output is at a low level. Fig. 4 is a schematic explanatory diagram of the threshold setting according to the present invention, Fig. 5 is an example of the distribution when there is little variation in the sensor output voltage, and Fig. 6 is a flowchart for determining that there is an object. This is a distribution example diagram when the number is large. 1... Light emitting element, 2... Light receiving element, 3... Sensing object, 5... A/D converter, 6... CPU, 7...
...Memory, 8...I/O, 9...Maximum output voltage position when there is no sensing object, 10...Minimum output voltage position when there is a sensing object, V 0 ...Depending on the amount of reflected light from the sensing object Output voltage.
Claims (1)
するよう構成された検出装置において、フオトセ
ンサーの出力電圧をＡ／Ｄ変換した後、「検出物
体が有る時」及び「検出物体が無い時」の値を何
回かサンプリングし、それぞれのデータの平均値
の中間の値に、スレツシユ値を自動設定すること
を繰り返して、フオトセンサー出力の、検出物体
位置によるバラツキや経時変動を補正するよう構
成したことを特徴とするペーパー等の検出装置。 In a detection device configured to determine the presence or absence of a detection object using a photo sensor, after A/D conversion of the output voltage of the photo sensor, the values ``when there is a detection object'' and ``when there is no detection object'' are determined. is configured to correct variations in the photo sensor output due to the position of the detected object and fluctuations over time by repeatedly sampling the data several times and automatically setting the threshold value to the middle value of the average value of each data. A detection device for paper, etc., characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12965989U JPH0368093U (en) | 1989-11-08 | 1989-11-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12965989U JPH0368093U (en) | 1989-11-08 | 1989-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0368093U true JPH0368093U (en) | 1991-07-03 |
Family
ID=31677273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12965989U Pending JPH0368093U (en) | 1989-11-08 | 1989-11-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0368093U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6945721B2 (en) | 2002-11-29 | 2005-09-20 | Brother Kogyo Kabushiki Kaisha | Edge-detecting device and image-forming device provided with the same |
| JP2015024505A (en) * | 2013-07-24 | 2015-02-05 | 富士通コンポーネント株式会社 | Printer and mark detection method |
-
1989
- 1989-11-08 JP JP12965989U patent/JPH0368093U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6945721B2 (en) | 2002-11-29 | 2005-09-20 | Brother Kogyo Kabushiki Kaisha | Edge-detecting device and image-forming device provided with the same |
| JP2015024505A (en) * | 2013-07-24 | 2015-02-05 | 富士通コンポーネント株式会社 | Printer and mark detection method |