JPH01273439A - Signal transmitter - Google Patents
Signal transmitterInfo
- Publication number
- JPH01273439A JPH01273439A JP10304288A JP10304288A JPH01273439A JP H01273439 A JPH01273439 A JP H01273439A JP 10304288 A JP10304288 A JP 10304288A JP 10304288 A JP10304288 A JP 10304288A JP H01273439 A JPH01273439 A JP H01273439A
- Authority
- JP
- Japan
- Prior art keywords
- current
- signal
- signal transmission
- section
- 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
- 230000008054 signal transmission Effects 0.000 claims abstract description 42
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 230000010355 oscillation Effects 0.000 claims abstract description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は直流電源に信号を重畳した信号伝送装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a signal transmission device in which a signal is superimposed on a DC power source.
従来の技術
従来のこの種の信号伝送装置は第４図に示すように、２
芯の直流信号伝送線Ａに重畳させる周波数を切換える構
成、すなわち第１の周波数ではコンデンサＢによるフィ
ルタで、第２の周波数ではコイルＣとコンデンサ０によ
るフィルタで各々表示器Ｅを点灯させ、直流信号伝送線
Ａの電圧極性を反転させることによって表示器Ｆを点灯
させるようになっていた（特公昭６３−１０３２８号公
報）。2. Description of the Related Art A conventional signal transmission device of this type has two
A configuration that switches the frequency to be superimposed on the core DC signal transmission line A, that is, at the first frequency, a filter using capacitor B is used, and at the second frequency, a filter using coil C and capacitor 0 lights up the display E, and the DC signal is The indicator F was turned on by reversing the voltage polarity of the transmission line A (Japanese Patent Publication No. 63-10328).
また、直流信号伝送線にデジタル信号を重畳させ、信号
をコード化して信号伝送する方式も種々ある。Furthermore, there are various methods of superimposing a digital signal on a DC signal transmission line, encoding the signal, and transmitting the signal.
発明が解決しようとする課題
しかしながら上記のような構成では、信号周波数を商用
電源周波数より充分高い周波数に設定する必要があるこ
とから、信号伝送ケーブルに制約がある。また極性を異
にする直流信号を伝送するために接続端子に取付極性が
生じ、取付工事が煩わしいという課題もある。Problems to be Solved by the Invention However, in the above-mentioned configuration, the signal frequency must be set to a frequency sufficiently higher than the commercial power supply frequency, so there are restrictions on the signal transmission cable. Furthermore, since DC signals of different polarities are transmitted, the connection terminals have different mounting polarities, which causes troublesome installation work.
またデジタル式は回路上のノイズ対策や信号解読器など
、比較的信号伝送量が多くない用途では高価になるとい
う欠点があった。Digital systems also have the disadvantage of being expensive for applications where the amount of signal transmission is not relatively large, such as noise countermeasures on circuits and signal decoders.
本発明はかかる従来の課題を解消するもので、信号ケー
ブルの制約を受けず、かつ極性をなくすることを目的と
する。The present invention solves such conventional problems, and aims to eliminate polarity without being restricted by signal cables.
課題を解決するための手段
上記課題を解決するために本発明の信号伝送装置は、直
流電源を可変する電圧可変部と信号電流を検出する電流
検出部と、電流検出部の出力を解読する比較検出部とを
備えた親機と、前記親機と２芯の信号伝送線を介して接
続された子機を設け、子機は全波整流器を介して信号伝
送線路の電流レベルを切換える制御スイッチとパルス電
流を発生する発振部と信号伝送線電圧を検出し７て表示
器を駆動する表示器制御部を備えたものである。Means for Solving the Problems In order to solve the above problems, the signal transmission device of the present invention includes a voltage variable section that varies a DC power source, a current detection section that detects a signal current, and a comparison device that deciphers the output of the current detection section. A main unit including a detection unit and a slave unit connected to the base unit via a two-core signal transmission line, the slave unit including a control switch that switches the current level of the signal transmission line via a full-wave rectifier. The device is equipped with an oscillator that generates a pulse current, and a display controller that detects the signal transmission line voltage and drives the display.
作 用
本発明は上記した構成によって、親機から子機には電圧
レベルの信号伝送を、子機から親機には電流レベルの信
号伝送を同時にかつ相互に無極性接続によって送受信で
きる。Operation With the above-described configuration, the present invention can transmit and receive voltage-level signals from the parent device to the slave device, and current-level signal transmission from the slave device to the parent device, at the same time through mutual non-polar connection.
実施例
以下、本発明の一実施例を添付図面に基づいて説明する
。EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings.
第１図は本発明の一実施例における信号伝送装置の構成
図であシ、第２図に各部信号波形を示す。FIG. 1 is a block diagram of a signal transmission device according to an embodiment of the present invention, and FIG. 2 shows signal waveforms at various parts.
第１図において、１は直流電源、２は直流電源１を可変
する電圧可変部、２ｍは電圧設定器、３は信号伝送線路
の電流を検出する信号電流検出部、４は前記電圧可変部
と信号電流検出部３を介して設けた信号伝送端子、５は
信号電流検出部の絶対電流値を検出する第１の比較検出
部、６は絶対電流値を超えて検出する第２の比較検出部
、７は２芯ケーブルで構成した信号伝送路、８は信号伝
送路７と接続する子機側Ｙの接続端子、９は接続端子８
の両端と接続した全波整流器で、接続端子の極性をなく
する。１０は全波祭器９の直流出力ｅ端子に接続した制
御スイッチであり、制御スイッチ１ｏを介して接続され
た全波整流器９の出力電圧を検出して表示器１１を付勢
する表示器制御部１２、信号伝送路７の電流値を可変す
べく全波整流９の出力端子間に接続した抵抗１３とスイ
ッチング素子１４の直列回路で構成した電流可変部１５
、スイッチング素子１４を開閉する発振回路部１６およ
び発振周波数を設定する抵抗からなる周波数設定器１７
．１８は定電圧ダイオード１９とともに子機の回路電圧
を生成する。In FIG. 1, 1 is a DC power supply, 2 is a voltage variable part that varies the DC power supply 1, 2m is a voltage setting device, 3 is a signal current detection part that detects the current of the signal transmission line, and 4 is the voltage variable part. A signal transmission terminal provided via the signal current detection section 3, 5 a first comparison detection section that detects the absolute current value of the signal current detection section, and 6 a second comparison detection section that detects an absolute current value exceeding the absolute current value. , 7 is a signal transmission path composed of a two-core cable, 8 is a connection terminal on the slave side Y that connects to the signal transmission path 7, and 9 is a connection terminal 8
A full-wave rectifier connected to both ends of the terminal eliminates the polarity of the connecting terminal. 10 is a control switch connected to the DC output e terminal of the full-wave rectifier 9, and a display control section that detects the output voltage of the full-wave rectifier 9 connected via the control switch 1o and energizes the display 11. 12. A current variable section 15 composed of a series circuit of a resistor 13 and a switching element 14 connected between the output terminals of the full-wave rectifier 9 in order to vary the current value of the signal transmission path 7.
, an oscillation circuit unit 16 that opens and closes the switching element 14, and a frequency setter 17 that includes a resistor that sets the oscillation frequency.
．． 18 generates a circuit voltage for the slave unit together with a constant voltage diode 19.
次に第２図を用いて信号伝送の動作を説明するつ縦軸に
回路機能、横軸に時間を取り、信号電圧波形を示す。Next, the signal transmission operation will be explained using FIG. 2, where the vertical axis shows the circuit function and the horizontal axis shows the time and signal voltage waveform.
時刻１０の状態は信号伝送を行りていない状態で信号伝
送電圧はａｌのレベルにある。時刻ｔ。At time 10, no signal is being transmitted, and the signal transmission voltage is at the level of al. Time t.
は子機側の制御スイッチ１０をオンした場合で、この時
、子機側の回路には町の電圧が印加され回路電流す、が
流れる。親機側の信号電流検出部３の電流検出端子すに
はす、電流に相当する電圧が発生し第１の比較検出部は
この電圧を検出して出力Ｃを発する。時刻ｔ２は子機側
の発振回路部１６を起動して電流可変部１５を付勢した
場合で、周波数設定器１７で設定された周波数６に応じ
たパルス電流が信号伝送路７を流れる。この時は親機の
信号電流検出すはｂ 電圧からｂ２電圧によす、このｂ
とｂ２間のパルス電圧となる。1 is a case where the control switch 10 on the handset side is turned on, and at this time, the local voltage is applied to the circuit on the handset side and the circuit current S flows. A voltage corresponding to the current is generated at the current detection terminal of the signal current detection section 3 on the base unit side, and the first comparison detection section detects this voltage and generates an output C. At time t2, the oscillation circuit section 16 on the handset side is activated and the current variable section 15 is energized, and a pulse current corresponding to the frequency 6 set by the frequency setter 17 flows through the signal transmission path 7. At this time, the signal current detection of the main unit is changed from the b voltage to the b2 voltage, and this b
It becomes a pulse voltage between and b2.
第１の比較検出部５はｔ４時刻の状態を保持するが、第
２の比較検出部６は１電圧以上を検出して出力−を発す
る。第１の比較検出部５の比較基準電圧と第２の比較検
出部６０基準電圧は検出電圧す、とｂ２間で十分に差別
するよう設定しておく、次に時刻ｔ３からｔ４で親機側
の電圧可変部２の出力電圧口を電圧設定器２．で可変し
１゜レベルの電圧とした場合、子機側の表示器制御部１
２は信号伝送路７の電圧変化を検出して表示器１１を点
灯させる。The first comparison detection section 5 holds the state at time t4, but the second comparison detection section 6 detects one or more voltages and issues an output -. The comparison reference voltage of the first comparison detection unit 5 and the reference voltage of the second comparison detection unit 60 are set to sufficiently differentiate between the detection voltages S, B2, and then from time t3 to t4 on the base unit side. The output voltage port of the voltage variable section 2 is connected to the voltage setting device 2. When the voltage is varied to 1° level, the display control unit 1 on the slave unit side
2 detects a voltage change in the signal transmission path 7 and lights up the display 11.
また、この電圧レベルを１．とａ２間で繰シ返せば表示
器１１を点滅させることも可能である。Also, set this voltage level to 1. By repeating the cycle between and a2, it is also possible to make the display 11 blink.
時刻ｔ５で子機側の制御スイッチ１０をオフすると時刻
ｔ０の状態に戻シ信号伝送が終了する。When the control switch 10 on the handset side is turned off at time t5, the state returns to time t0 and signal transmission ends.
次に本発明の他の実施例を第３図を用いて説明する。第
３図において前記実施例と相違する点は、子機側の制御
スイッチ１０のオン時に点灯する表示器２０を設けた構
成にあシ、この構成によれば制御スイッチによる信号伝
送表示ができるという効果がある。Next, another embodiment of the present invention will be described with reference to FIG. The difference in FIG. 3 from the above embodiment is that the configuration includes a display 20 that lights up when the control switch 10 on the handset side is turned on; with this configuration, it is possible to display signal transmission by the control switch. effective.
また、親機側の第２比較検出部６にＦ／Ｖ変換器２１を
設けた解読器を構成することも可能である。Furthermore, it is also possible to configure a decoder in which the F/V converter 21 is provided in the second comparison detection section 6 on the parent device side.
発明の効果
以上の様に本発明の信号伝送装置によれば次の効果が得
られる。Effects of the Invention As described above, the signal transmission device of the present invention provides the following effects.
（１）親機から子機には電圧レベルの信号伝送を、子機
から親機には電流レベルの信号伝送を行う構成としたこ
とによって、同時に相互通信ができるという効果がある
。(1) By adopting a configuration in which voltage level signals are transmitted from the master unit to the slave unit, and current level signals are transmitted from the slave unit to the master unit, there is an effect that mutual communication is possible at the same time.
＠）低周波の信号伝送ができるため、信号伝送ケーブル
に制約がない。@) Since low frequency signal transmission is possible, there are no restrictions on signal transmission cables.
（３）直流電源に信号を重畳し、かつ全波整流器を介し
て信号線を接続する構成なので、直流電圧の供給と相互
の接続が無極性で行なえる。(3) Since the configuration is such that a signal is superimposed on a DC power source and the signal line is connected via a full-wave rectifier, DC voltage supply and mutual connection can be performed without polarity.
（４）比較的信号伝送容量の少ない近距離の用途には安
価で提供できる。(4) It can be provided at low cost for short distance applications with relatively low signal transmission capacity.
第１図は本発明の一実施例における信号伝送装置の回路
図、第２図は同各部信号伝送波形図、第３図は本発明の
他の実施例を示す回路図、第４図は従来の信号伝送装置
における送受信部の一部を示す回路図である。
１・・・・・・直流電源、２・・・・・・電圧可変部、
３・・・・・・信号電流検出部、４・・・・・・信号伝
送端子、５・・・・・・第１の比較検出部、６・・・・
・・第２の比較検出部、７・・・・・・信号伝送路、９
・・・・・・全波整流器、１０・・・・・・制御スイッ
チ、１１・・・・・・表示器、１２・・・・・・表示器
制御部、１５・・・・・・電流可変部、１６・・・・・
・発振回路部、１７・・・・・・周波数設定器、Ｘ・・
・・・・親機、Ｙ・・・・・・子機。
第４図FIG. 1 is a circuit diagram of a signal transmission device according to an embodiment of the present invention, FIG. 2 is a signal transmission waveform diagram of each part of the same, FIG. 3 is a circuit diagram showing another embodiment of the present invention, and FIG. 4 is a conventional circuit diagram. FIG. 2 is a circuit diagram showing a part of a transmitting/receiving section in the signal transmission device of FIG. 1...DC power supply, 2...Voltage variable section,
3...Signal current detection section, 4...Signal transmission terminal, 5...First comparison detection section, 6...
...Second comparison detection section, 7...Signal transmission path, 9
... Full wave rectifier, 10 ... Control switch, 11 ... Display, 12 ... Display controller, 15 ... Current Variable part, 16...
・Oscillation circuit section, 17... Frequency setter, X...
...Master unit, Y...Slave unit. Figure 4
Claims (1)
記直流電源に重畳された信号電流を検出する信号電流検
出部とを介して設けた信号伝送端子と、前記電流検出部
の電流値を検出する第１比較検出部と、パルス電流値を
検出する第２比較検出部とを有した親機と、前記親機の
信号伝送端子と２芯のケーブルからなる信号伝送路を介
して接続された全波整流器と、前記全波整流器の直流出
力端子間に接続された電流可変部と、前記電流可変部を
付勢する発振回路部と、前記発振回路部の発振周波数を
設定する周波数設定器と、前記全波整流器の出力電圧を
検出して表示器を付勢する表示器制御部と、前記回路部
の電源を開閉する制御スイッチとを有した子機とからな
り、前記制御スイッチの開閉によって親機の電流検出部
の第１比較検出部に信号を伝送し、前記電流可変部によ
って前記第２比較検出部にパルス電流信号を伝送すると
ともに、親機の電圧可変部によって子機の表示器制御部
に信号を伝送してなる信号伝送装置。A signal transmission terminal provided via a DC power supply, a voltage variable section that varies the DC power supply, and a signal current detection section that detects a signal current superimposed on the DC power supply, and a current value of the current detection section. A base unit having a first comparison detection unit for detecting a pulse current value and a second comparison detection unit for detecting a pulse current value, and a signal transmission terminal of the base unit and a signal transmission path consisting of a two-core cable are connected to each other. a full-wave rectifier, a current variable section connected between DC output terminals of the full-wave rectifier, an oscillation circuit section that energizes the current variable section, and a frequency setter that sets the oscillation frequency of the oscillation circuit section. , a display control unit that detects the output voltage of the full-wave rectifier and energizes the display, and a slave device that has a control switch that opens and closes the power supply to the circuit unit, and that controls the opening and closing of the control switch. transmits a signal to the first comparison detection section of the current detection section of the parent device, transmits a pulse current signal to the second comparison detection section by the current variable section, and displays the display of the slave device by the voltage variable section of the parent device. A signal transmission device that transmits signals to the device control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10304288A JPH01273439A (en) | 1988-04-26 | 1988-04-26 | Signal transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10304288A JPH01273439A (en) | 1988-04-26 | 1988-04-26 | Signal transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01273439A true JPH01273439A (en) | 1989-11-01 |
Family
ID=14343610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10304288A Pending JPH01273439A (en) | 1988-04-26 | 1988-04-26 | Signal transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01273439A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013172386A (en) * | 2012-02-22 | 2013-09-02 | Denso Corp | Communication device |
| KR101896465B1 (en) * | 2017-09-20 | 2018-09-10 | 린나이코리아 주식회사 | Non polarized communication device having communication error preventing function |
-
1988
- 1988-04-26 JP JP10304288A patent/JPH01273439A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013172386A (en) * | 2012-02-22 | 2013-09-02 | Denso Corp | Communication device |
| KR101896465B1 (en) * | 2017-09-20 | 2018-09-10 | 린나이코리아 주식회사 | Non polarized communication device having communication error preventing function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5986539A (en) | Hafe-duplex two-wire DC power-line communication system | |
| JPH05347611A (en) | Industrial communication unit | |
| RU2008138557A (en) | Bidirectional, galvanic isolated transmission channel | |
| JPH03296359A (en) | Isdn interface circuit | |
| US5691604A (en) | Method and circuit system for controlling a lighting electronics appliance | |
| US4090184A (en) | Touch controlled switch system operable by touch inputs and coded message signals transmitted over power line | |
| JPH08265308A (en) | Method and device for fully bidirectional communication and programmable controller using the same | |
| JPH01273439A (en) | Signal transmitter | |
| JPH04216297A (en) | Power line communication system | |
| JP3853041B2 (en) | Anomaly detection equipment for disaster prevention facilities | |
| JPH03118485A (en) | Wiring tester | |
| JP2538458Y2 (en) | Ultrasonic detector | |
| JP3001786B2 (en) | Telephone line interface circuit | |
| JP2635741B2 (en) | Transmission circuit | |
| CN117895966A (en) | Isolated transceiver | |
| JPH03125534A (en) | Data transmission equipment | |
| JP2003110470A (en) | Two-wire data communication apparatus | |
| JP2540553Y2 (en) | LCD filter disconnection detector | |
| JPS6141830B2 (en) | ||
| JP2520192Y2 (en) | Video intercom | |
| SU1662002A1 (en) | Bipolar pulse driver | |
| KR200248771Y1 (en) | a 3D image-Converter for TV | |
| JPH0413900Y2 (en) | ||
| JPH04365292A (en) | Two line type remote controller | |
| JPH0380399B2 (en) |