JP2710189B2 - Media transport position detection circuit - Google Patents
Media transport position detection circuitInfo
- Publication number
- JP2710189B2 JP2710189B2 JP21984792A JP21984792A JP2710189B2 JP 2710189 B2 JP2710189 B2 JP 2710189B2 JP 21984792 A JP21984792 A JP 21984792A JP 21984792 A JP21984792 A JP 21984792A JP 2710189 B2 JP2710189 B2 JP 2710189B2
- Authority
- JP
- Japan
- Prior art keywords
- medium
- sensor
- output
- change
- counter
- 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.)
- Expired - Fee Related
Links
Landscapes
- Control Of Conveyors (AREA)
- Conveying Record Carriers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は媒***置検出回路に関
し、特に複数の媒体が搬送される際の媒体搬送位置検出
回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium position detecting circuit, and more particularly to a medium conveying position detecting circuit when a plurality of media are conveyed.
【０００２】[0002]
【従来の技術】従来の媒体搬送位置検出回路は搬送系に
設置された媒体検知の為の複数のセンサの出力状態をＣ
ＰＵがＩ／Ｏポートを通して読み込み、それぞれ個別に
認識するものであった。2. Description of the Related Art A conventional medium transport position detecting circuit detects output states of a plurality of sensors for detecting a medium provided in a transport system.
The PU reads through the I / O port and recognizes each individually.
【０００３】[0003]
【発明が解決しようとする課題】従来の媒体の搬送位置
検出方式では搬送系上の複数のセンサの出力状態をＣＰ
ＵがＩ／Ｏポートを通じてそれぞれ個別に認識する必要
がある為に、１つのＩ／Ｏポートに接続できるセンサの
数はＣＰＵのデータバスの本数に限定されるので、セン
サの数が増えるに従いＩ／Ｏポートの数が増え媒体の搬
送に伴ってＩ／Ｏポートを切り換えていかなけばならな
いという欠点がある。また、搬送系上で媒体を見失わな
い為には搬送系上に配置するセンサの間隔を媒体の長さ
よりも短かくするか、又はセンサの間隔を媒体の長さよ
り長い場合には、搬送系上のあるセンサを媒体が通過し
たことを次のセンサが媒体を検知するまでＣＰＵは記憶
しておかなければならないという欠点がある。また複数
の媒体を同時に搬送する際は１つの媒体の搬送を制御し
ている間は、他の媒体の搬送位置をＣＰＵは記憶してお
かなければならないという欠点がある。In the conventional medium transport position detection method, the output state of a plurality of sensors on the transport system is determined by the CP.
Since U needs to be individually recognized through I / O ports, the number of sensors that can be connected to one I / O port is limited to the number of CPU data buses. There is a drawback that the number of I / O ports increases and I / O ports must be switched as the medium is transported. In order to keep track of the medium on the transport system, the interval between sensors arranged on the transport system should be shorter than the length of the medium, or if the interval between sensors is longer than the length of the medium, The disadvantage is that the CPU must remember that the medium has passed through one sensor until the next sensor detects the medium. Further, when a plurality of media are transported at the same time, there is a disadvantage that the CPU must store the transport position of another medium while controlling the transport of one medium.
【０００４】[0004]
【課題を解決するための手段】本発明の媒体搬送位置検
出回路は複数の媒体の搬送に伴って生じる各媒体の先端
及び後端による搬送系上の各媒体検知センサの出力変化
を検出し、センサ出力に変化があるごとにパルスを出力
するセンシャレベル変化検出部と各媒体によるセンサレ
ベル変化検出部からのパルス出力を各媒体ごとにカウン
トする複数のセンサレベル変化回数カウンタとを含んで
構成される。A medium transport position detecting circuit according to the present invention detects a change in the output of each medium detecting sensor on a transport system due to the leading and trailing ends of each medium caused by the transport of a plurality of media. A sensory level change detection unit that outputs a pulse each time there is a change in the sensor output, and a plurality of sensor level change frequency counters that count the pulse output from the sensor level change detection unit for each medium for each medium. You.
【０００５】[0005]
【実施例】次に本発明について図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.
【０００６】図１は本発明の実施例を示すブロック図で
ある。媒体１がＣＰＵ１４の制御により搬送され、まず
搬送系上に設置されたセンサ３が媒体１の先端を検知
し、センサ３の出力レベルが変化する。媒体１先端によ
るセンサ３の出力レベルの変化は媒体先端によるセンサ
出力変化検出部８によって検出され、検出結果としてパ
ルスを媒体１先端によるセンサレベル変化回数カウンタ
１０に出力し、センサレベル変化回数カウンタ１０は１
つカウントアップする。さらに搬送が進むとセンサ４が
媒体１の先端を検知して、媒体１先端によるセンサレベ
ル変化回数カウンタ１０はさらにカウントアップする。
さらに搬送が進むとセンサ３が媒体１の後端を検知し、
センサ３の出力レベルが変化する。FIG. 1 is a block diagram showing an embodiment of the present invention. The medium 1 is transported under the control of the CPU 14. First, the sensor 3 installed on the transport system detects the leading end of the medium 1, and the output level of the sensor 3 changes. A change in the output level of the sensor 3 due to the leading end of the medium 1 is detected by a sensor output change detecting unit 8 due to the leading end of the medium, and a pulse is output as a detection result to the sensor level change counter 10 due to the leading end of the medium 1. Is 1
Count up. When the conveyance further proceeds, the sensor 4 detects the leading end of the medium 1 and the sensor level change counter 10 by the leading end of the medium 1 further counts up.
When the transport further proceeds, the sensor 3 detects the rear end of the medium 1 and
The output level of the sensor 3 changes.
【０００７】媒体１後端によるセンサ３の出力レベルの
変化は媒体後端によるセンサ出力変化検出部９によって
検出され、検出結果としてパルスを媒体１後端によるセ
ンサレベル変化回数カウンタ１２に出力し、センサレベ
ル変化回数カウンタ１２は１つカウントアップする。さ
らに搬送が進むと、センサ４が媒体１の後端、センサ５
が媒体１の先端、センサ５が媒体１の後端を順次検知す
る。よって搬送開始前のセンサレベル変化回数カウンタ
１０，１２のカウント値をいずれも０とすれば、センサ
５，６の間に媒体が存在するということは媒体１先端に
よるセンサレベル変化回数カウンタ１０のカウント値３
と媒体１後端によるセンサレベル変化回数カウンタ１２
６のカウント値３で示される。A change in the output level of the sensor 3 due to the rear end of the medium 1 is detected by a sensor output change detection unit 9 due to the rear end of the medium, and a pulse is output to the sensor level change counter 12 by the rear end of the medium 1 as a detection result. The sensor level change counter 12 counts up by one. When the transport further proceeds, the sensor 4 is moved to the rear end of the medium 1 and the sensor 5
Are sequentially detected at the front end of the medium 1 and the sensor 5 sequentially detects the rear end of the medium 1. Therefore, if the count values of the sensor level change counters 10 and 12 before the start of transport are both set to 0, the existence of the medium between the sensors 5 and 6 means that the sensor level change counter 10 by the leading end of the medium 1 counts. Value 3
Counter 12 for the sensor level change due to the rear end of the medium 1
It is indicated by the count value 3 of 6.
【０００８】センサ７が媒体１の先端を検知した時に状
態は媒体１先端によるセンサレベル変化回数カウンタ１
０のカウント値５と媒体１後端によるセンサレベル変化
回数カウンタ１２のカウント値４で示される。センサレ
ベル変化回数カウンタ１０，１２のカウント値と媒体１
の搬送位置は１対１に対応する為、ＣＰＵ１４はセンサ
レベル変化回数カウンタ１０，１２のカウント値より媒
体１の搬送位置検出が可能である。次に媒体１に続き媒
体２が搬送され、センサが媒体２の先端を検知すると、
センサ出力レベルの変化がセンサ出力変化検出部８によ
って検出される。When the sensor 7 detects the leading edge of the medium 1, the state is determined by a sensor level change counter 1 for the leading edge of the medium 1.
It is represented by a count value 5 of 0 and a count value 4 of the sensor level change frequency counter 12 by the rear end of the medium 1. Count values of sensor level change counters 10 and 12 and medium 1
Since the transfer positions of the medium 1 correspond one-to-one, the CPU 14 can detect the transfer position of the medium 1 from the count values of the sensor level change number counters 10 and 12. Next, the medium 2 is transported following the medium 1, and when the sensor detects the leading end of the medium 2,
A change in the sensor output level is detected by the sensor output change detection unit 8.
【０００９】このセンサの出力変化が媒体１によるもの
が、媒体２によるものかの判別は媒体１先端によるセン
サレベル変化回数カウンタ１０のカウント値を元にして
行われ、センサの出力変化の結果として、媒体先端によ
るセンサ出力変化検出部８よりパルスが媒体２先端によ
るセンサレベル変化回数カウンタ１１に出力され、カウ
ントアップする。同様に媒体２後端によるセンサレベル
変化回数カウンタ１２のカウント値を元にして媒体２後
端によるセンサレベル変化回数カウンタ１３にパルス出
力がされ、カウントアップする。よって媒体２の搬送位
置はセンサレベル変化回数カウンタ１１，１３のカウン
ト値よりＣＰＵに認識される。Whether the output change of the sensor is caused by the medium 1 or the medium 2 is determined based on the count value of the sensor level change counter 10 by the leading end of the medium 1 as a result of the sensor output change. Then, a pulse is output from the sensor output change detection unit 8 based on the leading end of the medium to the sensor level change count counter 11 based on the leading end of the medium 2 and counts up. Similarly, based on the count value of the sensor level change number counter 12 by the rear end of the medium 2, a pulse is output to the sensor level change number counter 13 by the rear end of the medium 2 and counts up. Accordingly, the CPU recognizes the transport position of the medium 2 from the count values of the sensor level change counters 11 and 13.
【００１０】[0010]
【発明の効果】以上説明した様に本発明は、複数の媒体
の搬送位置検出を搬送系に設けられた複数の媒体検知セ
ンサの各媒体の先端及び後端によるサンセ出力レベルの
変化を検出し、各媒体によるセンサ出力レベルの変化回
数を各媒体ごとにカウンタでカウントしたカウント値に
より行う回路なので、ＣＰＵがデータバスによって１度
に得られるセンサ情報が飛躍的に増加する効果と、カウ
ント値はセンサ出力に変化がない限り、その時の値に保
持されるので、媒体を見失うことがないという効果と、
複数の媒体の位置が別々のカウンタによって管理される
為、１つの媒体の搬送を制御している間も、ＣＰＵは他
の媒体の位置を記憶しておく必要がないという効果があ
る。As described above, the present invention detects the transport position of a plurality of media by detecting a change in the output level of the sensor due to the leading and trailing edges of each of the plurality of media detecting sensors provided in the transport system. Since the circuit performs the number of changes in the sensor output level by each medium based on the count value counted by the counter for each medium, the CPU has the effect of dramatically increasing the sensor information obtained at one time by the data bus, and the count value is As long as there is no change in the sensor output, it is kept at the value at that time, so that the effect of not losing the medium,
Since the positions of a plurality of media are managed by different counters, there is an effect that the CPU does not need to store the positions of other media while controlling the conveyance of one medium.
【図１】本発明の一実施例を示すブロック図である。FIG. 1 is a block diagram showing one embodiment of the present invention.
１，２ 搬送する媒体 ３〜７ 媒体検知センサ ８ 媒体先端によるセンサ出力変化検出部 ９ 媒体後端によるセンサ出力変化検出部 １０ 媒体１先端によるセンサレベル変化回数カウン
タ １１ 媒体２先端によるセンサレベル変化回数カウン
タ １２ 媒体１後端によるセンサレベル変化回数カウン
タ １３ 媒体２後端によるセンサレベル変化回数カウン
タ １４ ＣＰＵReference numeral 1, 2 indicates the medium to be conveyed 3 to 7 Medium detection sensor 8 Sensor output change detection unit due to the front end of the medium 9 Sensor output change detection unit due to the rear end of the medium 10 Sensor level change frequency counter due to the front end of the medium 1 11 Number of sensor level changes due to the front end of the medium 2 Counter 12 Counter for sensor level change due to rear end of medium 1 13 Counter for sensor level change due to rear end of medium 2 14 CPU
Claims (1)
送位置検出回路において、複数の媒体の移動によって生
じる各媒体の先端及び後端による各センサ出力レベルの
変化を検出し変化があるごとにパルスを出力するセンサ
レベル変化検出部と、各媒体によるセンサレベル変化検
出部からのパルス出力を各媒体ごとにカウントするセン
サレベル変化回数カウンタとを含むことを特徴とする媒
体搬送位置検出回路。A medium transport position detection circuit having a plurality of medium detection sensors detects a change in each sensor output level due to a leading end and a trailing end of each medium caused by the movement of the plurality of media, and a pulse is output each time there is a change. And a sensor level change counter for counting the pulse output from the sensor level change detector for each medium for each medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21984792A JP2710189B2 (en) | 1992-08-19 | 1992-08-19 | Media transport position detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21984792A JP2710189B2 (en) | 1992-08-19 | 1992-08-19 | Media transport position detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0664728A JPH0664728A (en) | 1994-03-08 |
| JP2710189B2 true JP2710189B2 (en) | 1998-02-10 |
Family
ID=16741999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21984792A Expired - Fee Related JP2710189B2 (en) | 1992-08-19 | 1992-08-19 | Media transport position detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2710189B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101686812B1 (en) * | 2015-05-21 | 2016-12-15 | 주식회사 대양기술 | The leveller |
-
1992
- 1992-08-19 JP JP21984792A patent/JP2710189B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0664728A (en) | 1994-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19970924 |
|
| LAPS | Cancellation because of no payment of annual fees |