WO2020082370A1 - Circuit de conversion, carte d'adaptateur et système de commande - Google Patents

Circuit de conversion, carte d'adaptateur et système de commande Download PDF

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Publication number
WO2020082370A1
WO2020082370A1 PCT/CN2018/112213 CN2018112213W WO2020082370A1 WO 2020082370 A1 WO2020082370 A1 WO 2020082370A1 CN 2018112213 W CN2018112213 W CN 2018112213W WO 2020082370 A1 WO2020082370 A1 WO 2020082370A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
circuit
resistor
control system
switch
Prior art date
Application number
PCT/CN2018/112213
Other languages
English (en)
Chinese (zh)
Inventor
尹朋
侯晓东
兰启庆
Original Assignee
深圳配天智能技术研究院有限公司
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 深圳配天智能技术研究院有限公司 filed Critical 深圳配天智能技术研究院有限公司
Priority to PCT/CN2018/112213 priority Critical patent/WO2020082370A1/fr
Priority to CN201880087308.0A priority patent/CN111630780B/zh
Publication of WO2020082370A1 publication Critical patent/WO2020082370A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/0175—Coupling arrangements; Interface arrangements

Definitions

  • the application relates to the technical field of industrial control, and relates to a conversion circuit, an adapter board and a control system.
  • the control system needs to receive multiple feedback signals from the load, and the level of the feedback signal is 24V, the level allowed by the control system is less than 24V, so the control system needs to receive the feedback signal through the adapter board, the feedback signal can include the NPN type Signal and PNP type signal.
  • the inventor of the present application discovered during the long-term research and development process that the prior art adaptor board uses a single-ended optocoupler, for example, the adaptor board supports input of NPN type signals; when replacing input PNP type signals, it is necessary to solder electronic components, It is not convenient for on-site maintenance and debugging.
  • the present application provides a conversion circuit, an adapter plate and a control system.
  • the embodiments of the present application provide a conversion circuit, which is applied to a control system, and the conversion circuit includes at least:
  • a forward circuit an input terminal of the forward circuit is used to receive a first signal
  • a reverse circuit the input terminal of the reverse circuit is used for receiving a second signal
  • An isolation circuit coupled to the forward circuit and the reverse circuit, is used to convert the first signal or the second signal to a third signal, and the output end of the isolation circuit and the control system Coupling, the control system receives the third signal from the isolation circuit.
  • the present invention also provides a control system, which includes a conversion circuit.
  • the control system obtains the first signal or the second signal from the load through the conversion circuit.
  • the conversion circuit includes at least:
  • a forward circuit an input terminal of the forward circuit is used to receive the first signal
  • a reverse circuit the input terminal of the reverse circuit is used to receive the second signal
  • An isolation circuit coupled to the forward circuit and the reverse circuit, is used to convert the first signal or the second signal to a third signal, and the output end of the isolation circuit and the control system Coupling, the control system receives the third signal from the isolation circuit.
  • the present invention also provides an adapter board provided with the above conversion circuit.
  • the conversion circuit of the present application includes a forward circuit, the input terminal of the forward circuit is used to receive the first signal; a reverse circuit, the input terminal of the reverse circuit is used to receive the second signal; an isolation circuit, Coupling with the forward circuit and the reverse circuit to convert the first signal or the second signal to a third signal, the output of the isolation circuit is coupled to the control system, the control system receives the third signal from the isolation circuit; the conversion The circuit can receive the first signal and the second signal through the reverse circuit and the forward circuit, and convert the first signal or the second signal into a third signal, without additional soldering of electronic components, and easy on-site maintenance and debugging.
  • 1 is a schematic diagram of the principle of the conversion circuit of the first embodiment of the present application.
  • FIG. 2 is a schematic diagram of the framework of the conversion circuit in FIG. 1 applied to the control system;
  • FIG. 3 is a circuit schematic diagram of the conversion circuit in FIG. 1;
  • FIG. 4 is a circuit schematic diagram of a conversion circuit according to a second embodiment of this application.
  • FIG. 5 is a circuit schematic diagram of a conversion circuit according to a third embodiment of this application.
  • Figure 6 is a schematic diagram of the conversion board of the first embodiment of the present application.
  • FIG. 7 is a schematic diagram of the control system of the first embodiment of the present application.
  • orientation or positional relationship indicated by the terms “inner” and “outer” in the description and claims of the present application and the above drawings is based on the orientation or positional relationship shown in the drawings, or is habitually placed when the product of the application is used
  • the orientation or positional relationship is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limit.
  • FIG. 1 is a schematic diagram of the principle of the conversion circuit of the first embodiment of the present application
  • FIG. 2 is a schematic diagram of the framework of the conversion circuit in FIG. 1 applied to the control system.
  • the conversion circuit 10 disclosed in this embodiment is applied to a control system 20 for industrial control.
  • the control system 20 receives a feedback signal from the load 21 through the conversion circuit 10.
  • control system 20 may include a PLC (Programmable Logic Controller, Programmable Logic Controller) or CNC (computer numerical control technology, omputerized Numerical Control).
  • PLC Programmable Logic Controller, Programmable Logic Controller
  • CNC computer numerical control technology, omputerized Numerical Control
  • PLC is an electronic device used in industrial production for a digital operation. It controls machinery through digital or analog input or output. The CNC automatically processes the parts to be processed according to the processing program set by the user in advance.
  • the conversion circuit 10 includes a forward circuit 11, a reverse circuit 12, and an isolation circuit 13; the input terminal of the forward circuit 11 is used to receive a first signal, the input terminal of the reverse circuit 12 is used to receive a second signal, and the feedback signal can be Including the first signal and the second signal.
  • the isolation circuit 13 is coupled to the forward circuit 11 and the reverse circuit 12 respectively, and obtains a first signal from the forward circuit 11 or a second signal from the reverse circuit 12 for converting the first signal or the second signal into the first Three signals, so that the level of the third signal received by the control system 20 meets the requirements of the control system 20.
  • the level of the first signal and the level of the second signal are both 24V, and the level of the third signal is less than 24V.
  • the conversion circuit 10 of this embodiment receives the first signal through the forward circuit 11 or the second signal through the reverse circuit 12, and converts the first signal or the second signal into a third signal, so that the control system 20 receives
  • the level of the third signal meets the requirements of the control system 20, no additional soldering of electronic components is required, and it is easy to maintain and debug on site.
  • FIG. 3 is a circuit schematic diagram of the conversion circuit in FIG.
  • the input terminal of the forward circuit 11 may be an NPN type input terminal
  • the input terminal of the reverse circuit 12 may be a PNP type input terminal.
  • the first signal is low level; when the input of the NPN type input terminal is invalid, the first signal is high level.
  • the second signal is high; when the input of the PNP input is invalid, the second signal is low.
  • the forward circuit 11 includes at least a first resistor R1.
  • One end of the first resistor R1 is used to receive the first signal. That is, one end of the first resistor R1 is an input end of the forward circuit 11; the other end of the first resistor R1 is The isolation circuit 13 is connected.
  • the reverse circuit 12 includes at least a second resistor R2, a third resistor R3, and a switch Q.
  • One end of the second resistor R2 is used to receive the second signal, that is, one end of the second resistor R2 is the input terminal of the reverse circuit 12 .
  • the other end of the second resistor R2 is connected to the first end of the switch Q, the one end of the third resistor R3 is connected to the first end of the switch Q, and the other end of the third resistor R3 is grounded.
  • the second end of the switch Q is connected to one end of the first resistor R1, that is, the second end of the switch Q is connected to the input of the forward circuit 11; the third end of the switch Q is connected to the other end of the third resistor R3 .
  • the isolation circuit 13 includes an optocoupler isolator 131 and a fourth resistor R4, the first input terminal of the optocoupler isolator 131 inputs a first reference voltage V1, and the second end of the optocoupler isolator 131 is connected to the other end of the first resistor R1 ,
  • the third end of the optocoupler isolator 131 is connected to one end of the fourth resistor R4, the other end of the fourth resistor R4 inputs the second reference voltage V2, the fourth end of the optocoupler isolator 131 is grounded, and the The third terminal is the output terminal of the isolation circuit 13.
  • the optocoupler isolator 131 includes a light emitter D1 and a light receiver D2.
  • the positive electrode of the light emitter D1 inputs the first reference voltage V1
  • the negative electrode of the light emitter D1 is connected to the first resistor R1
  • one end of the light receiver D2 is connected to the fourth resistor R4.
  • the other end of the light receiver D2 is grounded.
  • the first reference voltage V1 may be 24V, and the second reference voltage V2 may be 3.3V.
  • the optocoupler isolator 131 When the first signal received by the input terminal of the forward circuit 11 is low, that is, the input of the NPN type input terminal is valid, the current of the light emitter D1 is greater than the rated current of the light emitter D1, the light emitter D1 emits light, and the light receiver D2 conduct At this time, the optocoupler isolator 131 is turned on, the output terminal of the isolation circuit 13 outputs a low level, and the third signal is a low level.
  • the input signal of the forward circuit 11 receives the first signal as a high level, that is, when the input of the NPN type input terminal is invalid, the current of the light emitter D1 is less than the rated current of the light emitter D1, the light emitter D1 does not emit light, and the light receiver D2 Cut off; at this time, the optocoupler isolator 131 is cut off, the level of the output of the isolation circuit 13 is the same as the level of the second reference voltage V2, that is, the output of the isolation circuit 13 outputs a high level, and the third signal is a high level.
  • the switch Q When the input terminal of the reverse circuit 12 receives the second signal as a high level, that is, when the input of the PNP type input terminal is valid, the switch Q is turned on, the current of the light emitter D1 is greater than the rated current of the light emitter D1, the light emitter D1 Light is emitted, and the light receiver D2 is turned on; at this time, the photocoupler isolator 131 is turned on, the output end of the isolation circuit 13 outputs a low level, and the third signal is a low level.
  • the switch Q When the input of the reverse circuit 12 receives the second signal as a low level, that is, the input of the PNP type input is invalid, the switch Q is turned off, the light emitter D1 does not emit light, and the light receiver D2 is turned off; at this time, the photocoupler isolator 131 is turned off
  • the level of the output terminal of the isolation circuit 13 is the same as the level of the second reference voltage V2, that is, the output terminal of the isolation circuit 13 outputs a high level, and the third signal is a high level.
  • the conversion circuit 10 of this embodiment can be used either as an NPN type input terminal or as a PNP type input terminal.
  • the input type can be changed without additional soldering of electronic components. It is easy to maintain and debug on site, reduce the complexity of the circuit, and improve efficiency .
  • the present application provides a conversion circuit of a second embodiment.
  • the conversion circuit disclosed in this embodiment is described on the basis of the conversion circuit 10 disclosed in the first embodiment:
  • the switch Q is an NPN transistor,
  • the first end of the switch Q is the base of the NPN transistor,
  • the second end of the switch Q is the collector of the NPN transistor, and
  • the third end of the switch Q is the emitter of the NPN transistor.
  • the input terminal of the reverse circuit 12 When the input terminal of the reverse circuit 12 receives the second signal as a high level, the level of the base of the NPN transistor is high, the NPN transistor enters the saturation region, and the collector and emitter of the NPN transistor are turned on.
  • the input terminal of the reverse circuit 12 When the input terminal of the reverse circuit 12 receives the second signal as a low level, the level of the base of the NPN transistor is low, the NPN transistor enters the cut-off region, and the collector and emitter of the NPN transistor are cut off.
  • the switching tube Q of the conversion circuit disclosed in this embodiment is an NPN transistor, which avoids the use of mechanical selection switches and improves the reliability of the conversion circuit.
  • the present application provides a conversion circuit of a third embodiment.
  • the conversion circuit disclosed in this embodiment is described based on the conversion circuit 10 disclosed in the first embodiment: the switch Q is an N-type MOS
  • the first end of the switching tube Q is the gate of the N-type MOS tube
  • the second end of the switching tube Q is the drain of the N-type MOS tube
  • the third end of the switching tube Q is the source of the N-type MOS tube .
  • the level of the gate of the N-type MOS tube is a high level, and the N-type MOS tube is turned on.
  • the level of the gate of the N-type MOS tube is a low level, and the N-type MOS tube is turned off.
  • the switching tube Q of the conversion circuit disclosed in this embodiment is an N-type MOS tube, which avoids the use of mechanical selection switches and improves the reliability of the conversion circuit.
  • the present application further provides the adapter board of the first embodiment.
  • the adapter board 60 is provided with a conversion circuit 61.
  • the conversion circuit 61 is the conversion circuit disclosed in the foregoing embodiment, which will not be repeated here.
  • the present application further provides the control system of the first embodiment.
  • the control system 70 includes a conversion circuit 71.
  • the control system 70 obtains the first signal or the second signal from the load 72 through the conversion circuit 71.
  • the conversion circuit 71 The conversion circuit disclosed in the above embodiment will not be repeated here.
  • the conversion circuit of this application can be used either as an NPN input terminal or as a PNP input terminal. It can change the input type without additional soldering of electronic components, which is easy to maintain and debug on site, reducing the complexity of the circuit.
  • the switch Q is an NPN transistor or N-type MOS tube, avoiding the use of mechanical selection switches, and improving the reliability of the conversion circuit.

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Programmable Controllers (AREA)
  • Mounting Of Printed Circuit Boards And The Like (AREA)
  • Safety Devices In Control Systems (AREA)
  • Electronic Switches (AREA)

Abstract

Un circuit de conversion, une carte d'adaptateur et un système de commande sont décrits. Le circuit de conversion (10) comprend : un circuit forward (11), une extrémité d'entrée du circuit forward (11) étant utilisée pour recevoir un premier signal ; un circuit inverse (12), une extrémité d'entrée du circuit inverse (12) étant utilisée pour recevoir un second signal ; un circuit d'isolation (13), qui est couplé au circuit forward (11) et au circuit inverse (12) et qui est utilisé pour convertir le premier signal ou le deuxième signal en un troisième signal, une extrémité de sortie du circuit d'isolation (13) est couplée au système de commande (20), et le système de commande (20) reçoit le troisième signal provenant du circuit d'isolation (13). Au moyen du procédé décrit ci-dessus, il n'est pas nécessaire de souder des composants électroniques supplémentaires, ce qui facilite la maintenance et le débogage sur site.
PCT/CN2018/112213 2018-10-26 2018-10-26 Circuit de conversion, carte d'adaptateur et système de commande WO2020082370A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2018/112213 WO2020082370A1 (fr) 2018-10-26 2018-10-26 Circuit de conversion, carte d'adaptateur et système de commande
CN201880087308.0A CN111630780B (zh) 2018-10-26 2018-10-26 转换电路、转接板以及控制系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/112213 WO2020082370A1 (fr) 2018-10-26 2018-10-26 Circuit de conversion, carte d'adaptateur et système de commande

Publications (1)

Publication Number Publication Date
WO2020082370A1 true WO2020082370A1 (fr) 2020-04-30

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PCT/CN2018/112213 WO2020082370A1 (fr) 2018-10-26 2018-10-26 Circuit de conversion, carte d'adaptateur et système de commande

Country Status (2)

Country Link
CN (1) CN111630780B (fr)
WO (1) WO2020082370A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110768659A (zh) * 2019-10-29 2020-02-07 湖南国科微电子股份有限公司 高压驱动电路

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JPH01318970A (ja) * 1988-06-20 1989-12-25 Atsugi Unisia Corp ピーク値検出回路
CN202978877U (zh) * 2012-11-07 2013-06-05 广西玉柴机器股份有限公司 Pnp型接近开关与npn型接近开关自动转换装置
CN203734652U (zh) * 2013-10-24 2014-07-23 秦皇岛博硕光电设备股份有限公司 Npn/pnp开关量信号转换装置
CN204065778U (zh) * 2014-09-02 2014-12-31 浙江亚龙教育装备股份有限公司 开关量信号的转换电路和处理电路
CN204669330U (zh) * 2015-06-02 2015-09-23 中国航天科工集团第三研究院第八三五七研究所 通用型开关量输入信号的采集电路
CN206523760U (zh) * 2017-02-24 2017-09-26 无锡气动技术研究所有限公司 数字量输入信号通用检测电路
CN107888183A (zh) * 2017-12-16 2018-04-06 苏州元谋智能机器人系统有限公司 低压系统中npn/pnp传感器接入器

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FR2779250B1 (fr) * 1998-06-02 2001-09-07 Abb Control Sa Circuit d'interface bistandard pour liaison serie
CN101895289A (zh) * 2010-07-05 2010-11-24 艾默生网络能源有限公司 一种信号接口电路
CN103929169B (zh) * 2013-01-16 2017-09-29 大族激光科技产业集团股份有限公司 传感器输出电平隔离转换电路、电平隔离转换电路及设备

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01318970A (ja) * 1988-06-20 1989-12-25 Atsugi Unisia Corp ピーク値検出回路
CN202978877U (zh) * 2012-11-07 2013-06-05 广西玉柴机器股份有限公司 Pnp型接近开关与npn型接近开关自动转换装置
CN203734652U (zh) * 2013-10-24 2014-07-23 秦皇岛博硕光电设备股份有限公司 Npn/pnp开关量信号转换装置
CN204065778U (zh) * 2014-09-02 2014-12-31 浙江亚龙教育装备股份有限公司 开关量信号的转换电路和处理电路
CN204669330U (zh) * 2015-06-02 2015-09-23 中国航天科工集团第三研究院第八三五七研究所 通用型开关量输入信号的采集电路
CN206523760U (zh) * 2017-02-24 2017-09-26 无锡气动技术研究所有限公司 数字量输入信号通用检测电路
CN107888183A (zh) * 2017-12-16 2018-04-06 苏州元谋智能机器人系统有限公司 低压系统中npn/pnp传感器接入器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110768659A (zh) * 2019-10-29 2020-02-07 湖南国科微电子股份有限公司 高压驱动电路
CN110768659B (zh) * 2019-10-29 2023-10-31 湖南国科微电子股份有限公司 高压驱动电路

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CN111630780A (zh) 2020-09-04
CN111630780B (zh) 2022-08-16

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