JPH04270495A - Data transmission system - Google Patents

Data transmission system

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Publication number
JPH04270495A
JPH04270495A JP3071291A JP3071291A JPH04270495A JP H04270495 A JPH04270495 A JP H04270495A JP 3071291 A JP3071291 A JP 3071291A JP 3071291 A JP3071291 A JP 3071291A JP H04270495 A JPH04270495 A JP H04270495A
Authority
JP
Japan
Prior art keywords
signal
designated
output
data transmission
transmission system
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
Application number
JP3071291A
Other languages
Japanese (ja)
Inventor
Seiichiro Kihara
誠一郎 木原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP3071291A priority Critical patent/JPH04270495A/en
Priority to US07/792,527 priority patent/US5304812A/en
Priority to EP91119762A priority patent/EP0487051B1/en
Priority to DE69126951T priority patent/DE69126951T2/en
Publication of JPH04270495A publication Critical patent/JPH04270495A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To provide the data transmission system to decrease wirings and to facilitate assembly. CONSTITUTION:A designated signal generating means 20 is provided to transmit a signal decided in advance to plural photointerrupters 3A, 3B...3N when an address signal is inputted. Signal processing circuits 21 of the respective photointerrupters 3A, 3B...3N store the own designating signals, and the designating signal is detected from signals superimposed to a power supply line. Then, it is discriminated whether the detected signal is the signal decided in advance or not, and it is switched based on this discriminated result whether an output signal is transmitted to a controller 4 or not. Thus, by respectively changing the designated signals to the respective photointerrupters and designating an address corresponding to the signal, the outputs of the respective photointerrupters can be outputted by one data line and transmitted to the controller.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は、複写機等の情報機器、
ビデオテープレコーダ、音響機器、家庭用電気製品、車
載電装品、電気楽器、工業用機器の制御に用いられ、内
部に複数の検知装置を備え、この検知装置の出力を伝達
するデータ伝送方式に関するものである。
[Industrial Application Field] The present invention is applicable to information equipment such as copying machines,
Related to a data transmission method that is used to control video tape recorders, audio equipment, household electrical appliances, in-vehicle electrical equipment, electric musical instruments, and industrial equipment, and that includes multiple internal detection devices and transmits the output of the detection devices. It is.

【0002】0002

【従来の技術】一般に、複写機等の情報機器、ビデオテ
ープレコーダ、音響機器、家庭用電気製品、車載電装品
、電気楽器、工業用機器の制御には、検知装置として多
数の光結合装置(フオトインタラプタ)が使用されてい
るが、このフオトインタラプタを備えた従来のデータ伝
送方式の一例を図4に示す。
2. Description of the Related Art Generally, a large number of optical coupling devices ( An example of a conventional data transmission system equipped with a photo interrupter is shown in FIG.

【0003】図4において、3A,3B…3Nはフオト
インタラプタ、4は制御装置(マイクロコンピユータ)
である。
In FIG. 4, 3A, 3B...3N are photo interrupters, and 4 is a control device (microcomputer).
It is.

【0004】フオトインタラプタ3A,3B…3Nは、
発光素子(LED)5と、LED5の電流制限抵抗6と
、受光素子(フオトトランジスタ)7とから構成されて
いる。
[0004] The photo interrupters 3A, 3B...3N are
It is composed of a light emitting element (LED) 5, a current limiting resistor 6 for the LED 5, and a light receiving element (phototransistor) 7.

【0005】8A,8B…8Nはフオトトランジスタの
出力抵抗であつて、出力抵抗8A,8B…8Nからは出
力線9A,9B…9Nが出ており、この出力線9A,9
B…9Nはマイクロコンピユータ4に接続されている。
8A, 8B...8N are output resistors of phototransistors, and output lines 9A, 9B...9N come out from the output resistors 8A, 8B...8N.
B...9N are connected to the microcomputer 4.

【0006】そして、フオトインタラプタ3A,3B…
3Nは、LED5の出射光がフオトトランジスタ7に当
たるのを被検出物体が遮ることで、出力抵抗8A,8B
…8Nに流れる電流を変化させ、出力線9A,9B…9
Nの電圧を変化させる。
[0006] Photo interrupters 3A, 3B...
3N is due to the fact that the object to be detected blocks the light emitted from the LED 5 from hitting the phototransistor 7, and the output resistors 8A and 8B
...Change the current flowing to 8N, output lines 9A, 9B...9
Change the voltage of N.

【0007】[0007]

【発明が解決しようとする課題】近年、機器の高性能化
に伴い、使用されるフオトインタラプタが増加している
。このため、機器内の配線も増加し、機器の組み立てや
配線が複雑になるという問題が生じている。
[Problems to be Solved by the Invention] In recent years, as the performance of equipment has improved, the number of photo interrupters used has increased. As a result, the number of wires inside the device increases, creating a problem in which the assembly and wiring of the device becomes complicated.

【0008】本発明は、上記に鑑み、機器内の配線を減
らし、組み立てを容易にするデータ伝送方式の提供を目
的とする。
SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a data transmission system that reduces wiring within a device and facilitates assembly.

【0009】[0009]

【課題を解決するための手段】(1)本発明請求項1に
よる課題解決手段は、図1ないし図3の如く、複数の検
知装置3A,3B…3Nと、アドレス信号が入力される
と、各検知装置3A,3B…3Nに対応して予め定めら
れた信号を電源ラインに重畳して発する指定信号発生手
段20とから構成され、各検知装置3A,3B…3Nの
出力を制御装置4に伝達するデータ伝送方式であつて、
前記検知装置3A,3B…3Nは、検知信号を信号処理
する信号処理回路21を有し、該信号処理回路21は、
自己の指定信号を記憶しておき、前記指定信号発生手段
20にて電源ラインに重畳された信号のうち指定信号を
検出し、検出信号が記憶された自己の指定信号か否か判
別する信号判別手段24と、該信号判別手段24にて検
出信号が自己の指定信号と一致すると判別されたときに
は、出力信号を前記制御装置4に伝達し、一致しないと
判別されたときには、出力信号を前記制御装置4に伝達
しないようにする出力切換手段27とを備えたものであ
る。
[Means for Solving the Problems] (1) The problem solving means according to claim 1 of the present invention, as shown in FIGS. 1 to 3, includes a plurality of detection devices 3A, 3B...3N, and when an address signal is input, It is composed of a designated signal generation means 20 that superimposes and emits a predetermined signal on the power supply line corresponding to each detection device 3A, 3B...3N, and outputs from each detection device 3A, 3B...3N to the control device 4. A data transmission method for transmitting
The detection devices 3A, 3B...3N each have a signal processing circuit 21 that processes the detection signal, and the signal processing circuit 21 includes:
A signal determination method that stores its own designated signal, detects the designated signal among the signals superimposed on the power supply line by the designated signal generating means 20, and determines whether the detected signal is the stored designated signal of its own. When the detection signal is determined by the means 24 and the signal determining means 24 to match the designated signal, the output signal is transmitted to the control device 4, and when it is determined that they do not match, the output signal is transmitted to the control device 4. The output switching means 27 prevents the signal from being transmitted to the device 4.

【0010】(2)請求項2による課題解決手段は、請
求項1記載の指定信号発生手段20から発せられる指定
信号が周波数信号であるものである。
(2) The problem solving means according to claim 2 is that the designation signal generated from the designation signal generation means 20 according to claim 1 is a frequency signal.

【0011】(3)請求項3による課題解決手段は、請
求項1記載の指定信号発生手段20から発せられる指定
信号がパル列信号であるものである。
(3) The problem solving means according to claim 3 is that the designation signal generated from the designation signal generating means 20 according to claim 1 is a pulse train signal.

【0012】(4)請求項4による課題解決手段は、請
求項1ないし3記載の検知装置3A,3B…3Nの出力
が一本のデータ線Dに直結して制御装置4に接続された
ものである。
(4) The problem solving means according to claim 4 is one in which the outputs of the detection devices 3A, 3B...3N according to claims 1 to 3 are directly connected to one data line D and connected to the control device 4. It is.

【0013】[0013]

【作用】上記課題解決手段において、指定信号発生手段
20にアドレス信号が入力されると、指定信号発生手段
20は、各検知装置3A,3B…3Nに対して予め定め
られた信号を電源ラインに重畳して発する。
[Operation] In the above problem solving means, when an address signal is input to the designation signal generation means 20, the designation signal generation means 20 sends a predetermined signal to the power supply line for each detection device 3A, 3B...3N. Emits in a superimposed manner.

【0014】そうすると、検知装置3A,3B…3Nの
信号処理回路21は、その信号判別手段24にて、指定
信号発生手段20で電源ラインに重畳された信号のうち
指定信号を検出し、検出信号が記憶された自己の指定信
号か否か判別する。
[0014] Then, the signal processing circuit 21 of the detection devices 3A, 3B, . It is determined whether or not it is the stored designated signal.

【0015】そして、信号判別手段24により検出信号
が自己の指定信号を一致すると判別されたときには、出
力切換手段27を作動させて出力信号をデータ線Dを介
して制御装置4に伝達する。
When the signal determining means 24 determines that the detection signal matches its designated signal, the output switching means 27 is activated to transmit the output signal to the control device 4 via the data line D.

【0016】このように、各検知装置3A,3B…3N
を、信号処理回路21の信号判別手段24にて、指定信
号発生手段20で電源ラインに重畳される信号が自己の
指定信号か否か判別し、この判別結果に基づき出力信号
を出力するか否か切り換えるよう構成することで、複数
の検知装置と制御装置間のデータ伝送は、指定信号発生
手段20から各検知装置3A,3B…3Nに対して、そ
の判別手段24に合致した信号を重畳して発すれば、そ
れに応じて各検知装置3A,3B…3Nの出力を一本の
データ線Dにて制御装置4に伝達することができる。
In this way, each detection device 3A, 3B...3N
The signal determining means 24 of the signal processing circuit 21 determines whether the signal superimposed on the power supply line by the designated signal generating means 20 is its own designated signal, and based on this determination result, outputs an output signal or not. Data transmission between the plurality of detection devices and the control device is performed by superimposing a signal that matches the determination means 24 from the specified signal generation means 20 to each of the detection devices 3A, 3B, . . . 3N. If the signal is emitted, the outputs of the respective detection devices 3A, 3B, .

【0017】[0017]

【実施例】以下、本発明の一実施例を図1ないし図3に
基づいて説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

【0018】図1は本発明の一実施例に係るデータ伝送
方式の構成を示す図、図2は光結合装置の信号処理回路
の構成を示す図、図3は指定信号発生手段の構成を示す
図である。なお、図4に示す従来技術と同一機能部品に
ついては同一符号を付している。
FIG. 1 is a diagram showing the configuration of a data transmission system according to an embodiment of the present invention, FIG. 2 is a diagram showing the configuration of a signal processing circuit of an optical coupling device, and FIG. 3 is a diagram showing the configuration of a designated signal generation means. It is a diagram. Note that the same reference numerals are given to the same functional parts as those of the prior art shown in FIG.

【0019】図示の如く、本実施例のデータ伝送方式は
、検知装置である複数の光結合装置(フオトインタラプ
タ)3A,3B…3Nと、アドレス信号が入力されると
、各フオトインタラプタ3A,3B…3Nに対応して予
め定められた周波数信号を電源(Vcc)ラインに重畳
して発する指定信号発生手段20とから構成されており
、各フオトインタラプタ3A,3B…3Nの出力は、一
本のデータ線Dに直結して制御装置(マイクロコンピユ
ータ)4に接続されている。
As shown in the figure, the data transmission system of this embodiment includes a plurality of optical coupling devices (photo interrupters) 3A, 3B, . ...3N, and a designated signal generating means 20 that superimposes and emits a predetermined frequency signal on the power supply (Vcc) line, and the output of each photo interrupter 3A, 3B...3N is one It is directly connected to the data line D and connected to the control device (microcomputer) 4.

【0020】前記フオトインタラプタ3A,3B…3N
は、図1の如く、発光素子(LED)5、LED5の電
流制限抵抗6、受光素子(フオトダイオード)7および
フオトダイオード7の出力信号と信号処理する信号処理
回路21から成る。
[0020] The photo interrupter 3A, 3B...3N
As shown in FIG. 1, it comprises a light emitting element (LED) 5, a current limiting resistor 6 for the LED 5, a light receiving element (photodiode) 7, and a signal processing circuit 21 that processes the output signal of the photodiode 7.

【0021】前記信号処理回路21は、図2の如く、定
電圧回路部22、アンプ23、信号判別手段24および
出力切換手段27から構成されている。この判別手段2
4は、信号検出回路部(コンデンサ)25と信号判別回
路部26から成り、信号判別回路部26にて自己の指定
周波数信号を記憶しておき、前記指定信号発生手段20
で電源ラインに重畳された信号のうち周波数信号のみを
コンデンサ25にて検出し、検出信号が自己の指定周波
数信号か否か信号判別回路部26にて判別する機能を有
している。また、出力切換手段27は、アンプ23に接
続されたスイツチであつて、信号判別手段24にて検出
信号が自己の指定周波数信号と一致すると判別されたと
きにはONし、出力信号をマイクロコンピユータ4に伝
達し、一致しないと判別されたときにはOFF状態を維
持し、出力信号をマイクロコンピユータ4に伝達しない
ようにする機能を有している。
The signal processing circuit 21 is composed of a constant voltage circuit section 22, an amplifier 23, a signal discrimination means 24, and an output switching means 27, as shown in FIG. This discrimination means 2
4 consists of a signal detection circuit section (capacitor) 25 and a signal discrimination circuit section 26, the signal discrimination circuit section 26 stores its own specified frequency signal, and the specified signal generation means 20
The capacitor 25 detects only the frequency signal among the signals superimposed on the power supply line, and the signal discriminating circuit section 26 discriminates whether the detected signal is the designated frequency signal of the self. The output switching means 27 is a switch connected to the amplifier 23, and is turned on when the signal determining means 24 determines that the detection signal matches its designated frequency signal, and outputs the output signal to the microcomputer 4. It has a function of not transmitting the output signal to the microcomputer 4 by maintaining the OFF state when it is determined that they do not match.

【0022】前記指定信号発生手段20は、図3の如く
、抵抗28、コンデンサ29および信号発生回路部30
から構成されている。この信号発生回路部30は、アド
レス信号が出力されると、アドレス信号に応じて一定周
波数の信号を発生し、前記コンデンサ28、抵抗27を
介して電源(Vcc)ラインに周波数信号を重畳する機
能を有している。
As shown in FIG. 3, the designated signal generating means 20 includes a resistor 28, a capacitor 29, and a signal generating circuit section 30.
It consists of This signal generation circuit unit 30 has a function of generating a signal of a constant frequency according to the address signal when the address signal is output, and superimposing the frequency signal on the power supply (Vcc) line via the capacitor 28 and resistor 27. have.

【0023】そして、LED5のアノードは、図1の如
く、指定信号発生手段20の端子20aに接続され、カ
ソードは電流制限抵抗6を介してグランド(GND)に
接地されている。一方、フオトダイオード7のカソード
は信号処理回路21の端子21aに、アノードは信号処
理回路21の端子21bに夫々接続されている。なお、
指定信号発生手段20の端子20aは、図3の如く、コ
ンデンサ29を介して信号発生回路30に、信号処理回
路21の端子21aは、図2の如く、アンプ23の負論
理側入力端子に、同じく端子21bはアンプ23の正論
理側入力端子に接続されている。
The anode of the LED 5 is connected to the terminal 20a of the designation signal generating means 20, as shown in FIG. 1, and the cathode is connected to the ground (GND) via the current limiting resistor 6. On the other hand, the cathode and anode of the photodiode 7 are connected to a terminal 21a and a terminal 21b of the signal processing circuit 21, respectively. In addition,
The terminal 20a of the designated signal generating means 20 is connected to the signal generating circuit 30 via the capacitor 29 as shown in FIG. 3, and the terminal 21a of the signal processing circuit 21 is connected to the negative logic side input terminal of the amplifier 23 as shown in FIG. Similarly, the terminal 21b is connected to the positive logic side input terminal of the amplifier 23.

【0024】また、信号処理回路21の端子21cは、
図1の如く、指定信号発生手段20の端子20aに、端
子21dはデータ線Dに夫々接続されており、端子21
eはグランド(GND)に接地されている。なお、信号
処理回路21の端子21cは、定電圧回路部22および
コンデンサ25に、端子21dは切換手段27に、端子
21eはアンプ23および信号判別回路部26に夫々接
続されている。
Furthermore, the terminal 21c of the signal processing circuit 21 is
As shown in FIG. 1, the terminal 20a and the terminal 21d of the designation signal generating means 20 are connected to the data line D, respectively, and the terminal 21
e is grounded to the ground (GND). Note that the terminal 21c of the signal processing circuit 21 is connected to the constant voltage circuit section 22 and the capacitor 25, the terminal 21d is connected to the switching means 27, and the terminal 21e is connected to the amplifier 23 and the signal discrimination circuit section 26.

【0025】さらに、指定信号発生手段20の端子20
bは、電源(Vcc)ラインに接続され、端子20cは
グランドに接地され、端子20dはアドレス線Aに接続
されている。なお、指定信号発生手段20の端子20b
は、図3の如く、抵抗28、コンデンサ29を介して信
号発生回路30に、端子20c,20dは信号発生回路
30に直接接続されている。
Furthermore, the terminal 20 of the designated signal generating means 20
b is connected to the power supply (Vcc) line, the terminal 20c is grounded, and the terminal 20d is connected to the address line A. Note that the terminal 20b of the designated signal generating means 20
As shown in FIG. 3, the terminals 20c and 20d are directly connected to the signal generating circuit 30 via a resistor 28 and a capacitor 29.

【0026】上記構成において、指定信号発生手段20
の端子20dにアドレス信号が入力されると、指定信号
発生手段20の信号発生回路部30は、アドレス信号に
応じて一定周波数の信号を発生し、コンデンサ29、抵
抗28を介して電源(Vcc)ラインに前記周波数信号
を重畳する。
In the above configuration, the designation signal generating means 20
When an address signal is input to the terminal 20d of the designation signal generating means 20, the signal generating circuit section 30 of the designating signal generating means 20 generates a signal of a constant frequency according to the address signal, and connects it to the power supply (Vcc) via the capacitor 29 and the resistor 28. The frequency signal is superimposed on the line.

【0027】そして、指定信号発生手段20にて周波数
信号が重畳された電源電圧は、指定信号発生手段20の
端子24からフオトインタラプタ3A,3B…3Nの信
号処理回路21に出力される。
The power supply voltage on which the frequency signal has been superimposed by the designated signal generating means 20 is outputted from the terminal 24 of the designated signal generating means 20 to the signal processing circuit 21 of the photo interrupters 3A, 3B, . . . , 3N.

【0028】信号処理回路21の端子21cから入つた
周波数信号が重畳された電源電圧は、信号判別手段24
のコンデンサ25で電源電圧がカツトされ、周波数信号
だけが検出されて信号判別回路部26に入力される。一
方、電源電圧は、定電圧回路部25で整流され、アンプ
23と信号判別回路部26に夫々供給される。
The power supply voltage on which the frequency signal input from the terminal 21c of the signal processing circuit 21 is superimposed is applied to the signal discriminating means 24.
The power supply voltage is cut off by the capacitor 25 , and only the frequency signal is detected and input to the signal discrimination circuit section 26 . On the other hand, the power supply voltage is rectified by the constant voltage circuit section 25 and supplied to the amplifier 23 and the signal discrimination circuit section 26, respectively.

【0029】そうすると、信号判別手段24の信号判別
回路部26は、入力信号が予め定められた自己の記憶周
波数と一致すると判別すると、出力切換手段であるスイ
ツチ27をONしする。これにより、アンプ23で増幅
・信号処理されたフオトダイオード7の出力をデータ線
Dに出力して出力データをマイクロコンピユータ4に伝
達する。
Then, when the signal discriminating circuit section 26 of the signal discriminating means 24 determines that the input signal matches its own predetermined storage frequency, it turns on the switch 27, which is the output switching means. As a result, the output of the photodiode 7 amplified and signal-processed by the amplifier 23 is output to the data line D, and the output data is transmitted to the microcomputer 4.

【0030】一方、信号判別手段24の信号判別回路部
26は、入力信号が予め定められた自己の記憶周波数と
一致しないと判別すると、出力切換手段であるスイツチ
27をOFFを維持する。これにより、フオトダイオー
ド7の出力はマイクロコンピユータ4に伝達されない。
On the other hand, when the signal discriminating circuit section 26 of the signal discriminating means 24 determines that the input signal does not match its own predetermined storage frequency, it keeps the switch 27, which is the output switching means, OFF. As a result, the output of the photodiode 7 is not transmitted to the microcomputer 4.

【0031】このように、アドレス信号が入力されると
、複数のフオトインタラプタ3A,3B…3Nに対して
予め定められた信号を電源ラインに重畳して発する指定
信号発生手段20を設け、各フオトインタラプタ3A,
3B…3Nの信号処理回路21内に、自己の指定信号を
記憶しておき、指定信号発生手段20にて電源ラインに
重畳された信号のうち指定信号を検出し、検出信号が自
己の指定信号か否か判別する信号判別手段24と、判別
手段24にて検出信号が自己の指定信号と一致すると判
別されたときに出力信号をマイクロコンピユータ4に伝
達する出力切換手段27とを備えることで、各フオトイ
ンタラプタ3A,3B…3Nに対する指定信号の周波数
を夫々変えておき、それに応じてアドレス指定すれば、
各フオトインタラプタ3A,3B…3Nの出力を一本の
データ線Dにて出力させることができる。
In this way, when an address signal is input, the designation signal generating means 20 is provided to generate a predetermined signal superimposed on the power supply line to the plurality of photo interrupters 3A, 3B, . . . Interrupter 3A,
A self-designated signal is stored in the signal processing circuit 21 of 3B...3N, and the designated signal generating means 20 detects the designated signal from among the signals superimposed on the power supply line, and the detected signal is the self-designated signal. By comprising a signal discriminating means 24 for discriminating whether or not the detection signal matches the self-designated signal, and an output switching means 27 for transmitting an output signal to the microcomputer 4 when the discriminating means 24 determines that the detected signal matches its designated signal, By changing the frequency of the designated signal for each photo interrupter 3A, 3B...3N and specifying the address accordingly,
The output of each photo interrupter 3A, 3B, . . . , 3N can be outputted via one data line D.

【0032】したがつて、配線を減らし、組み立てを容
易にすることができる。
[0032] Therefore, wiring can be reduced and assembly can be facilitated.

【0033】なお、本発明は、上記実施例に限定される
ものではなく、本発明の範囲内で上記実施例に多くの修
正および変更を加え得ることは勿論である。
It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

【0034】例えば、上記実施例において、指定信号発
生手段20から発せられる指定信号がパルス列信号であ
つてもよい。
For example, in the above embodiment, the designation signal generated from the designation signal generating means 20 may be a pulse train signal.

【0035】また、検知装置を、フオトインタラプタに
代えて、入力信号を発光素子で一旦光に変換し、この光
を受光素子で再び電気信号に変換して出力するフオトカ
プラとしてもよい。
Furthermore, instead of a photointerrupter, the detection device may be a photocoupler that first converts an input signal into light using a light emitting element, converts this light again into an electrical signal using a light receiving element, and outputs the electrical signal.

【0036】[0036]

【発明の効果】以上の説明から明らかな通り、本発明請
求項1ないし4によると、アドレス信号が入力されると
、複数の検知装置に対して予め定められた信号を電源ラ
インに重畳して発する指定信号発生手段を設け、各検知
装置の信号処理回路を、自己の指定信号を記憶しておき
、電源ラインに重畳された信号のうち指定信号を検出し
、検出信号が予め定められたものか判別し、この判別結
果に基づき出力信号を制御装置に伝達するか否か切換え
るよう構成しているので、各検知装置に対する指定信号
を夫々変えておき、それに応じてアドレス指定すれば、
各検知装置の出力を一本のデータ線にて出力して制御装
置に伝達することができる。
As is clear from the above description, according to claims 1 to 4 of the present invention, when an address signal is input, predetermined signals are superimposed on the power supply line for a plurality of detection devices. The signal processing circuit of each detection device stores its own designated signal, detects the designated signal from among the signals superimposed on the power supply line, and detects the designated signal from the signal superimposed on the power supply line. Since the configuration is configured to determine whether or not to transmit the output signal to the control device based on the result of this determination, by changing the designation signal for each detection device and specifying the address accordingly,
The output of each detection device can be output through one data line and transmitted to the control device.

【0037】したがつて、配線を減らし、組立てを容易
にするといつた優れた効果がある。
[0037] Therefore, there are excellent effects such as reducing wiring and facilitating assembly.

【図面の簡単な説明】[Brief explanation of the drawing]

【図1】図1は本発明の一実施例に係るデータ伝送方式
の構成を示す図である。
FIG. 1 is a diagram showing the configuration of a data transmission system according to an embodiment of the present invention.

【図2】図2は光結合装置の信号処理回路の構成を示す
図である。
FIG. 2 is a diagram showing the configuration of a signal processing circuit of the optical coupling device.

【図3】図3は指定信号発生手段の構成を示す図である
FIG. 3 is a diagram showing the configuration of a designation signal generating means.

【図4】図4は従来のデータ伝送方式の構成を示す図で
ある。
FIG. 4 is a diagram showing the configuration of a conventional data transmission system.

【符号の説明】[Explanation of symbols]

3A,3B…3N    フオトインタラプタ4   
 制御装置 5    発光素子 7    受光素子 20    指定信号発生手段 21    信号処理回路 24    信号判別手段 27    出力切換手段 D    データ線
3A, 3B...3N Photo interrupter 4
Control device 5 Light emitting element 7 Light receiving element 20 Designation signal generation means 21 Signal processing circuit 24 Signal discrimination means 27 Output switching means D Data line

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】  複数の検知装置と、アドレス信号が入
力されると、各検知装置に対応して予め定められた信号
を電源ラインに重畳して発する指定信号発生手段とから
構成され、各検知装置の出力を制御装置に伝達するデー
タ伝送方式であつて、前記検知装置は、検知信号を信号
処理する信号処理回路を有し、該信号処理回路は、自己
の指定信号を記憶しておき、前記指定信号発生手段にて
電源ラインに重畳された信号のうち指定信号を検出し、
検出信号が記憶された自己の指定信号か否か判別する信
号判別手段と、該信号判別手段にて検出信号が自己の指
定信号と一致すると判別されたときには、出力信号を前
記制御装置に伝達し、一致しないと判別されたときには
、出力信号を前記制御装置に伝達しないようにする出力
切換手段とを備えたことを特徴とするデータ伝送方式。
Claim 1: Consisting of a plurality of detection devices, and designated signal generation means that superimposes and emits a predetermined signal corresponding to each detection device on a power supply line when an address signal is input, A data transmission method for transmitting the output of a device to a control device, wherein the detection device has a signal processing circuit that processes the detection signal, and the signal processing circuit stores its own designated signal, detecting a designated signal among the signals superimposed on the power supply line by the designated signal generating means;
a signal discriminating means for discriminating whether the detected signal is a stored self-designated signal; and when the signal discriminating means determines that the detected signal matches the self-designated signal, transmitting an output signal to the control device. and output switching means for not transmitting the output signal to the control device when it is determined that the signals do not match.
【請求項2】  請求項1記載の指定信号発生手段から
発せられる指定信号が周波数信号であることを特徴とす
るデータ伝送方式。
2. A data transmission system, wherein the designated signal generated by the designated signal generating means according to claim 1 is a frequency signal.
【請求項3】  請求項1記載の指定信号発生手段から
発せられる指定信号がパルス列信号であることを特徴と
するデータ伝送方式。
3. A data transmission system, wherein the designation signal generated by the designation signal generating means according to claim 1 is a pulse train signal.
【請求項4】  請求項1ないし3記載の検知装置の出
力が一本のデータ線に直結して制御装置に接続されたこ
とを特徴とするデータ伝送方式。
4. A data transmission system, characterized in that the output of the detection device according to claim 1 is directly connected to one data line and connected to a control device.
JP3071291A 1990-11-21 1991-02-26 Data transmission system Pending JPH04270495A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP3071291A JPH04270495A (en) 1991-02-26 1991-02-26 Data transmission system
US07/792,527 US5304812A (en) 1990-11-21 1991-11-18 Optoelectronic device, information apparatus and data transmission system using optoelectronic device for simplifying wirings and reducing size, and method of controlling the optoelectronic device
EP91119762A EP0487051B1 (en) 1990-11-21 1991-11-19 Optoelectronic device, information apparatus and data transmission system using optoelectronic device for simplifying wirings and reducing size, and method of controlling the optoelectronic device
DE69126951T DE69126951T2 (en) 1990-11-21 1991-11-19 Optoelectronic device and suitable control method, information device equipped with this device and data transmission system with simplified wiring and reduced size

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3071291A JPH04270495A (en) 1991-02-26 1991-02-26 Data transmission system

Publications (1)

Publication Number Publication Date
JPH04270495A true JPH04270495A (en) 1992-09-25

Family

ID=12311260

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3071291A Pending JPH04270495A (en) 1990-11-21 1991-02-26 Data transmission system

Country Status (1)

Country Link
JP (1) JPH04270495A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9121694B2 (en) 2012-07-17 2015-09-01 Panasonic Intellectual Property Management Co., Ltd. Position detection device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5145549A (en) * 1974-10-17 1976-04-19 Saginomiya Seisakusho Inc KANKYOHENKAOENKAKUCHIDEKANSHISURU SOCHI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5145549A (en) * 1974-10-17 1976-04-19 Saginomiya Seisakusho Inc KANKYOHENKAOENKAKUCHIDEKANSHISURU SOCHI

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9121694B2 (en) 2012-07-17 2015-09-01 Panasonic Intellectual Property Management Co., Ltd. Position detection device

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