JPS63143968U - - Google Patents
Info
- Publication number
- JPS63143968U JPS63143968U JP1675088U JP1675088U JPS63143968U JP S63143968 U JPS63143968 U JP S63143968U JP 1675088 U JP1675088 U JP 1675088U JP 1675088 U JP1675088 U JP 1675088U JP S63143968 U JPS63143968 U JP S63143968U
- Authority
- JP
- Japan
- Prior art keywords
- value
- medium
- converter
- maximum value
- register
- 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
- 230000003247 decreasing effect Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の実施例の構成を示す説明図、
第２図ａ〜ｃは第１図の実施例の動作を示す流れ
図であり、図中、１はセンサ、２はＡ／Ｄコンバ
ータ、２１は比較回路、２２，２５はレジスタ、
２３はマイクロプロセツサ、２４はメモリを示す
。
FIG. 1 is an explanatory diagram showing the configuration of an embodiment of the present invention;
2a to 2c are flowcharts showing the operation of the embodiment of FIG. 1, in which 1 is a sensor, 2 is an A/D converter, 21 is a comparison circuit, 22 and 25 are registers,
23 is a microprocessor, and 24 is a memory.
Claims (1)
電気信号をデジタル化するＡ／Ｄコンバータと、
該媒体がセツトされない時に該Ａ／Ｄコンバータ
から得られる最大値と該媒体がセツトされた時に
該Ａ／Ｄコンバータから得られる最小値を記憶す
る回路を具え、予めデジタル化された数値の最大
値と最小値間の固定比により決定されたスライス
レベルと、動作時デジタル化されたセンサの出力
とを比較することにより媒体の有無を検出する媒
体検出装置において、 該媒体がセツトされない時に得られる該Ａ／Ｄ
コンバータ出力とレジスタにセツトされた値を減
少させながら比較して最大値を求める手段と、 該媒体がセツトされた時に得られる該Ａ／Ｄコ
ンバータ出力と該レジスタにセツトされた値を減
少させながら比較して最小値を求める手段と、 該最大値、最小値を時間をずらして求めるよう
に制御する制御手段とを具えたことを特徴とする
媒体検出装置。[Claims for Utility Model Registration] A sensor that detects a medium, an A/D converter that digitizes an electrical signal from the sensor,
A circuit is provided for storing the maximum value obtained from the A/D converter when the medium is not set and the minimum value obtained from the A/D converter when the medium is set, and the maximum value of the pre-digitized numerical value is stored. In a medium detection device that detects the presence or absence of a medium by comparing a slice level determined by a fixed ratio between the minimum value and the output of a sensor digitized during operation, A/D
means for determining the maximum value by comparing the converter output and the value set in the register while decreasing the value; and means for determining the maximum value by comparing the converter output and the value set in the register while decreasing the value set in the register. A medium detection device comprising: means for determining a minimum value by comparison; and a control means for controlling the maximum value and the minimum value to be determined at different times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1675088U JPS63143968U (en) | 1988-02-10 | 1988-02-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1675088U JPS63143968U (en) | 1988-02-10 | 1988-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63143968U true JPS63143968U (en) | 1988-09-21 |
Family
ID=30808888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1675088U Pending JPS63143968U (en) | 1988-02-10 | 1988-02-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63143968U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128438A (en) * | 1974-09-04 | 1976-03-10 | Hitachi Ltd | |
| JPS5533212A (en) * | 1978-08-31 | 1980-03-08 | Fujitsu Ltd | Form feeder |
-
1988
- 1988-02-10 JP JP1675088U patent/JPS63143968U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128438A (en) * | 1974-09-04 | 1976-03-10 | Hitachi Ltd | |
| JPS5533212A (en) * | 1978-08-31 | 1980-03-08 | Fujitsu Ltd | Form feeder |