WO2018094615A1 - 主从工控设备远程启动控制电路 - Google Patents

主从工控设备远程启动控制电路 Download PDF

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WO2018094615A1
WO2018094615A1 PCT/CN2016/106968 CN2016106968W WO2018094615A1 WO 2018094615 A1 WO2018094615 A1 WO 2018094615A1 CN 2016106968 W CN2016106968 W CN 2016106968W WO 2018094615 A1 WO2018094615 A1 WO 2018094615A1
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Prior art keywords
double
slave
throw relay
circuit
main
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PCT/CN2016/106968
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English (en)
French (fr)
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陈文康
赵光俊
王汝英
李欣荣
王传宝
张宾
李宽荣
白春涛
孙亮
张振宇
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天津市普迅电力信息技术有限公司
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Priority to PCT/CN2016/106968 priority Critical patent/WO2018094615A1/zh
Publication of WO2018094615A1 publication Critical patent/WO2018094615A1/zh

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/048Monitoring; Safety
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof

Definitions

  • the invention belongs to the field of remote control technology of the master-slave industrial control equipment in the field engineering, in particular to a remote start control circuit of the master-slave industrial control equipment.
  • the main detonator controls the detonator. Because of the certain danger from the position of the detonator, the main detonator needs to pass through.
  • the communication cable is remotely controlled from the detonator.
  • the master device controls the slave device by connecting the master and slave devices through the cable. After the slave device is powered on, and then the remote device is operated to control the slave device, the master device cannot remotely control the power of the slave device. shut down. After the slave device power is turned on, the slave device can be remotely controlled, and the operator needs a certain time from the slave device to the master device.
  • the master device is remotely controlled at this time, and the personnel at the slave device have certain risks.
  • the operator is required to manually close the slave device from the device after the operation.
  • the main device can be operated to remotely control the power on and off of the slave device, not only can the operation efficiency be improved, but also the operation safety can be improved.
  • the object of the present invention is to overcome the deficiencies of the prior art and provide a remote start control circuit for a master-slave industrial control device.
  • a master-slave industrial control device remotely starts a control circuit, the circuit includes a main device circuit portion and a plurality of slave device circuit portions having the same structure, and the main device circuit portion passes through a relay switch of its own and a plurality of slave device circuit portions of the relay switch Stranded connection
  • the main equipment circuit part further comprises a main equipment power supply, a double pole double throw relay K1 and a double pole single throw relay K2, the main equipment power supply is a 10 volt DC power supply, a main CPU and a main non-polar communication circuit, and a 10 volt DC power supply.
  • the output is connected to the double pole double throw relay K1 through the electronic switch S1, the output of the double pole double throw relay K1 is connected with the input of the double pole single throw relay K2, and the output of the double pole single throw relay K2 is connected between the circuit parts of the master and slave devices
  • the main CPU is respectively connected with the control end of the electronic switch S1, the double pole double throw relay K1 and the double pole single throw relay K2, and the control electronic switch S1, the double pole double throw relay K1 and the double pole single throw relay K2
  • the data port of the main CPU is connected with the data port of the main non-polar communication circuit to realize data transmission between the two, and the output of the main non-polar communication circuit and the normally open contact of the double-pole double-throw relay K1 Point connection, when the double pole double throw relay K1 is controlled by the main CPU to be a normally open contact, the main non-polar communication circuit realizes communication with the slave circuit part;
  • the slave circuit part further comprises a slave device power supply, a slave CPU, a whole machine power supply, a non-polar communication circuit and a double pole double throw relay K3, and the main contact of the double pole double throw relay K3 passes through the twisted pair and the main device.
  • the double-pole single-throw relay K2 of the circuit part is connected, the normally closed contact of the double-pole double-throwing relay K3 is connected with the input of the rectifier bridge, and the output of the rectifier bridge is connected with the input end of the optocoupler through the current limiting resistor R2, the output of the optocoupler Connected between the gate of the MOS transistor Q1 and the ground, and controls the on or off state of the MOS transistor Q1, thereby realizing the connection between the power supply of the slave device connected to the input end of the MOS transistor Q1 and the power supply of the whole device connected to the output end of the MOS transistor Q1.
  • the control end of the double-pole double-throw relay K3 is connected to the slave CPU, and the switch state is controlled by the slave CPU.
  • the normally open contact of the double-pole double-throw relay K3 is connected to the input terminal from the non-polar communication circuit.
  • the data terminal of the non-polar communication circuit is connected with the data interface of the slave CPU to realize data communication between the two, and at the same time, the level control port of the slave CPU and the MOS transistor Q2 connected between the output terminal of the slave device and the ground.
  • Gate connection Controlling MOS transistor Q2 is turned on or off, open or closed to control the device from a power source between a power supply and the machine.
  • the master-slave non-polar communication circuit specifically adopts a non-polar 485 communication module
  • the non-polar 485 communication module specifically adopts the RS-485 serial bus standard communication protocol method of adaptive bus polarity for data communication
  • the model of the master-slave CPU is STM32F103.
  • the main device of the invention remotely controls the powering on and off of the slave device to ensure the operational safety of the slave device.
  • the invention connects the master and slave devices through the twisted pair without distinguishing the polarity, thereby ensuring the convenience of the connection.
  • the invention saves operating time and improves operating efficiency.
  • FIG. 1 is a circuit schematic diagram of an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a connection of a master device connecting multiple slave devices according to an embodiment of the present invention.
  • a master-slave industrial control device remote start control circuit as shown in FIG. 1 or 2, the circuit includes a main device circuit portion and a plurality of slave device circuit portions having the same structure, and the main device circuit portion passes its own relay switch and multiple slave circuits.
  • the relay switch of the circuit part of the device is connected by a twisted pair;
  • the main equipment circuit part further comprises a main equipment power supply, a double pole double throw relay K1 and a double pole single throw relay K2, the main equipment power supply is a 10 volt DC power supply, a main CPU and a main non-polar communication circuit, and a 10 volt DC power supply.
  • the output is connected to the double pole double throw relay K1 through the electronic switch S1, and the output of the double pole double throw relay K1 is connected to the input of the double pole single throw relay K2.
  • the output of the double-pole single-throw relay K2 is connected to one end of the twisted pair between the circuit parts of the master and slave devices, and the main CPU is respectively connected with the control ends of the electronic switch S1, the double-pole double-throw relay K1 and the double-pole single-throw relay K2, and the control electronics
  • the working state of the switch S1, the double-pole double-throwing relay K1 and the double-pole single-throwing relay K2, and the data port of the main CPU is connected with the data port of the main non-polar communication circuit to realize data communication between the two, the main non-polarity
  • the output end of the communication circuit is connected to the normally open contact of the double pole double throw relay K1.
  • the main non-polar communication circuit realizes the circuit part of the slave device.
  • the slave circuit part further comprises a slave device power supply, a slave CPU, a whole machine power supply, a non-polar communication circuit and a double pole double throw relay K3, and the main contact of the double pole double throw relay K3 passes through the twisted pair and the main device.
  • the double-pole single-throw relay K2 of the circuit part is connected, the normally closed contact of the double-pole double-throwing relay K3 is connected with the input of the rectifier bridge, and the output of the rectifier bridge is connected with the input end of the optocoupler through the current limiting resistor R2, the output of the optocoupler
  • the connection is connected to the gate of the MOS transistor Q1 to control the conduction or the off state of the MOS transistor Q1, thereby realizing the conduction between the slave device power supply connected to the input end of the MOS transistor Q1 and the power supply source connected to the output end of the MOS transistor Q1.
  • the control end of the double-pole double-throw relay K3 is connected to the slave CPU, and the switch state is controlled by the slave CPU.
  • the normally open contact of the double-pole double-throw relay K3 is connected with the input terminal from the non-polar communication circuit, and the polarity is non-polar.
  • the data end of the communication circuit is connected with the data interface of the slave CPU to realize data communication between the two, and at the same time, the level control port of the slave CPU and the gate of the MOS transistor Q2 connected between the output terminal of the slave device and the ground connection, MOS transistor Q2 is made open or closed, open or closed to control the device from a power source between a power supply and the machine.
  • the master-slave non-polar communication circuit specifically adopts a non-polarity 485 communication module
  • the RS-485 serial bus standard communication protocol adopts an adaptive bus polarity between the non-polar 485 communication modules. The way to communicate data.
  • a diode D1 and a diode D2 are respectively connected between two normally open contacts of the double pole double throw relay K3 and two lines connected from the non-polar communication circuit to the ground, It is used to ensure normal communication between the master and slave non-polar communication circuits.
  • the model of the master-slave CPU is a CPU of the STM32F103;
  • the finite current resistor R1 is connected in series between the electronic switch S1 and the double pole double throw relay K1.
  • the master device remotely starts the slave device: the operator manually turns on the power of the master device, and the master device is powered on.
  • the 10V power output circuit After the main device is started, the 10V power output circuit generates 10V DC output, the main CPU controls the electronic switch S1 to close, the DC 10V output to the double-pole double-throw relay K1 normally closed contact, and the DC 10V passes the double-pole double-throw relay K1 to the double-knife Single-throw relay K2, the main CPU controls the double-pole single-throw relay K2 to close, the DC 10V is output to the twisted pair through the double-pole single-throw relay K2, and the main contact of the double-pole double-throw relay K3 is input from the device through the twisted pair.
  • the main contact of the double pole double throw relay K3 is connected with the normally closed contact.
  • the double pole double throw relay K3 normally closed contact is connected with the rectifier bridge, the DC 10V input rectifier bridge, and the rectifier bridge can rectify the input current.
  • the input DC power does not distinguish the direction and polarity of the access.
  • the DC power input to the rectifier bridge is loaded to the optocoupler input terminal through the resistor current limit.
  • the internal input diode of the optocoupler causes the output transistor to be turned on.
  • the gate is connected, and the optocoupler output transistor is turned on to lower the gate level of the MOS transistor Q1 to the ground potential MOS transistor Q1.
  • the power from the device is loaded to the power supply of the whole machine through Q1, and the slave device starts up from the device power supply.
  • the CPU controls the MOS transistor Q2 to conduct, and the MOS transistor Q2 pulls down the gate level of the MOS transistor Q1. Keep the Q1 conduction power supply to the ground continuously.
  • the double-pole double-throw relay K3 is controlled from the CPU, the K3 main contact is connected with the normally open contact, the K3 normally open contact is connected with the relay input terminal, and the double-pole double-throwing relay K3 main contact and the slaveless step are connected.
  • the sexual communication circuit is directly connected. At this time, the non-polar communication circuit is connected to the main device through the twisted pair cable, and waits for the main device to transmit the communication signal.
  • the master device communicates with the slave device: the master device double-pole double-throw relay K1 normally open contact and the main non-polar
  • the communication circuit is connected.
  • the main CPU controls the main device double-pole double-throw relay K1.
  • the double-pole double-throw relay K1 main contact is connected to the normally open contact, and the main non-polar communication circuit passes K1. It is connected with the double-pole single-throw relay K2, and is connected to the twisted pair through the double-pole single-throw relay K2 to communicate with the double-pole double-throw relay K3 of the slave device.
  • the master device waits to receive an instruction sent from the non-polar communication circuit through the twisted pair.
  • the master device If the master device receives the command within a certain time, it can detect that the slave device starts normally, and if no instruction is sent from the device within a certain time, Then, it can be judged that the slave device does not start normally, and then the startup cycle is repeated.
  • the master device remotely shuts down the slave device: after the master device and the slave device communicate normally, the master device sends a shutdown command to the slave device, and after receiving the command from the non-polarity communication circuit, sends the shutdown command to the slave CPU, and the slave CPU controls the MOS transistor Q2 to be turned off according to the instruction request.
  • the MOS transistor Q2 When the MOS transistor Q2 is turned off, the gate of the MOS transistor Q1 is pulled high, the gate level is pulled high, the MOS transistor Q1 is turned off, the power supply input of the whole machine is disconnected, the slave device is turned off, and the slave device double-double-throwing relay K3 is normally open.
  • the contact is open, the normally closed contact is connected to the main contact, and the slave rectifier bridge is connected to the outside.
  • the master device After the device is powered off, the master device sends a command to the slave device.
  • the slave device does not reply the command due to the shutdown.
  • the master device determines that the slave device is normally shut down. If the slave device replies with the command, the master device can determine that the slave device is not powered off, and then repeatedly shut down the slave device. .
  • the operator manually turns off the power of the master device, the power of the master device is turned off, the electronic switch S1 is disconnected, the main contact of the double-pole double-throw relay K1 is connected with the normally closed contact, and the double-pole single-throw relay K2 is broken. open.
  • the main device of the invention remotely controls the powering on and off of the slave device to ensure the operation safety of the slave device; the invention connects the master and slave devices through the twisted pair without distinguishing the polarity, thereby ensuring the convenience of the connection; the invention saves the operation Time to improve operational efficiency.

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Abstract

一种主从工控设备远程启动控制电路,包括主设备电路部分和多个结构相同的从设备电路部分,主设备电路部分通过本身的继电器开关与多个从设备电路部分的继电器开关由双绞线连接,同时,主设备电路部分的主CPU通过主无极性通信电路与从设备电路部分的从无极性通信电路连通后实现与从设备电路部分的从CPU进行数据交换,从而实现从设备电路部分中从设备电源对整机供电电源的控制。

Description

主从工控设备远程启动控制电路 技术领域
本发明属于野外工程中主从工控设备的远程控制技术领域,尤其是一种主从工控设备远程启动控制电路。
背景技术
在野外工程中对于主从工控设备之间的控制,特别是在火工领域,主起爆器对从起爆器的控制,由于从起爆器所处位置具有一定的危险性,需要主起爆器通过长距离通讯连接线远程控制从起爆器。目前,主设备对从设备的控制,都是通过连接线连接主从设备后,打开从设备电源开机后,再到远处操作主设备控制从设备,主设备不能远程控制从设备的电源打开和关闭。在从设备电源打开后,从设备就能够被远程控制,操作人员从从设备处到主设备处需要一定的时间,如主设备此时被远程控制操作,从设备处人员有一定的危险性,特别是操作完毕后需要操作员到从设备处手动关闭从设备。目前,如果能操作主设备远程控制从设备的电源启动与关闭,不仅能提高操作的效率还能提高操作的安全性。
发明内容
本发明的目的在于克服现有技术的不足,提供一种主从工控设备远程启动控制电路。
本发明解决其技术问题是采取以下技术方案实现的:
一种主从工控设备远程启动控制电路,该电路包括主设备电路部分和多个结构相同的从设备电路部分,主设备电路部分通过本身的继电器开关与多个从设备电路部分的继电器开关由双绞线连接;
其中,主设备电路部分进一步包括主设备电源、双刀双掷继电器K1和双刀单掷继电器K2,主设备电源分别为10伏直流电源、主CPU及主无极性通信电路供电,10伏直流电源的输出通过电子开关S1与双刀双掷继电器K1连接,双刀双掷继电器K1的输出与双刀单掷继电器K2的输入连接,双刀单掷继电器K2的输出连接主从设备电路部分之间的双绞线一端,主CPU分别与电子开关S1、双刀双掷继电器K1及双刀单掷继电器K2的控制端连接,控制电子开关S1、双刀双掷继电器K1及双刀单掷继电器K2的工作状态,同时,主CPU的数据端口与主无极性通信电路的数据端口连接,实现两者之间的数据传输,主无极性通信电路的输出端与双刀双掷继电器K1的常开触点连接,当双刀双掷继电器K1由主CPU控制为常开触点连通时,主无极性通信电路实现与从设备电路部分的通信;
其中,从设备电路部分进一步包括从设备电源、从CPU、整机供电电源、从无极性通信电路及双刀双掷继电器K3,双刀双掷继电器K3的主触点通过双绞线与主设备电路部分的双刀单掷继电器K2连接,双刀双掷继电器K3的常闭触点与整流桥的输入连接,整流桥的输出通过限流电阻R2与光耦的输入端连接,光耦的输出连接在MOS管Q1的栅极与地之间,控制MOS管Q1的导通或关闭状态,从而实现MOS管Q1输入端连接的从设备电源与MOS管Q1输出端连接的整机供电电源之间的导通或关闭,双刀双掷继电器K3的控制端与从CPU连接,由从CPU控制其开关状态,双刀双掷继电器K3的常开触点与从无极性通信电路的输入端连接,从无极性通信电路的数据端与从CPU的数据接口连接,实现两者之间的数据通信,同时,从CPU的电平控制端口与连接在从设备电源输出端与地之间的MOS管Q2的栅极连接,控制MOS管Q2的导通或关闭,从而控制从设备电源与整机供电电源之间的导通或关闭。
而且,所述主从无极性通信电路均具体采用无极性485通信模块,该 无极性485通信模块之间具体采用自适应总线极性的RS-485串行总线标准通信协议方式进行数据通;
而且,在双刀双掷继电器K3的两个常开触点与从无极性通信电路连接的两根线;
而且,所述主从CPU的型号均为STM32F103。
本发明的优点和积极效果是:
1、该发明主设备远程控制从设备的电源启动与关闭,可保证从设备的操作安全性。
2、该发明通过双绞线不区分极性连接主从设备,保证了连接的方便性。
3、该发明节约了操作时间,提高操作效率。
附图说明
图1是本发明实施例的电路原理图;
图2是本发明实施例主设备连接多个从设备的连接示意图。
具体实施方式
以下结合附图对本发明实施例做进一步详述,需要强调的是,本发明所述的实施例是说明性的,而不是限定性的,不能以此作为对本发明保护的范围的限定。
一种主从工控设备远程启动控制电路,如图1或2所示,该电路包括主设备电路部分和多个结构相同的从设备电路部分,主设备电路部分通过本身的继电器开关与多个从设备电路部分的继电器开关由双绞线连接;
其中,主设备电路部分进一步包括主设备电源、双刀双掷继电器K1和双刀单掷继电器K2,主设备电源分别为10伏直流电源、主CPU及主无极性通信电路供电,10伏直流电源的输出通过电子开关S1与双刀双掷继电器K1连接,双刀双掷继电器K1的输出与双刀单掷继电器K2的输入连接, 双刀单掷继电器K2的输出连接主从设备电路部分之间的双绞线一端,主CPU分别与电子开关S1、双刀双掷继电器K1及双刀单掷继电器K2的控制端连接,控制电子开关S1、双刀双掷继电器K1及双刀单掷继电器K2的工作状态,同时,主CPU的数据端口与主无极性通信电路的数据端口连接,实现两者之间的数据通信,主无极性通信电路的输出端与双刀双掷继电器K1的常开触点连接,当双刀双掷继电器K1由主CPU控制为常开触点连通时,主无极性通信电路实现与从设备电路部分的通信;
其中,从设备电路部分进一步包括从设备电源、从CPU、整机供电电源、从无极性通信电路及双刀双掷继电器K3,双刀双掷继电器K3的主触点通过双绞线与主设备电路部分的双刀单掷继电器K2连接,双刀双掷继电器K3的常闭触点与整流桥的输入连接,整流桥的输出通过限流电阻R2与光耦的输入端连接,光耦的输出连接在MOS管Q1的栅极相连,控制MOS管Q1的导通或关闭状态,从而实现MOS管Q1输入端连接的从设备电源与MOS管Q1输出端连接的整机供电电源之间的导通或关闭,双刀双掷继电器K3的控制端与从CPU连接,由从CPU控制其开关状态,双刀双掷继电器K3的常开触点与从无极性通信电路的输入端连接,从无极性通信电路的数据端与从CPU的数据接口连接,实现两者之间的数据通信,同时,从CPU的电平控制端口与连接在从设备电源输出端与地之间的MOS管Q2的栅极连接,控制MOS管Q2的导通或关闭,从而控制从设备电源与整机供电电源之间的导通或关闭。
在本发明的具体实施中,所述主从无极性通信电路均具体采用无极性485通信模块,该无极性485通信模块之间具体采用自适应总线极性的RS-485串行总线标准通信协议方式进行数据通信。
在本发明的具体实施中,在双刀双掷继电器K3的两个常开触点与从无极性通信电路连接的两根线路与地之间分别连接二极管D1和二极管D2, 用以保障主从无极性通信电路之间的正常通信。
在本发明的具体实施中,所述主从CPU的型号均为STM32F103的CPU即可;
在本发明的具体实施中,在电子开关S1与双刀双掷继电器K1之间串接有限流电阻R1。
本发明的工作原理
主设备远程启动从设备:操作员手动打开主设备电源,主设备开机。主设备启动后,10V电源输出电路产生10V直流输出,主CPU控制电子开关S1闭合,直流10V输出至双刀双掷继电器K1常闭触点,直流10V通过双刀双掷继电器K1输出至双刀单掷继电器K2,主CPU控制双刀单掷继电器K2闭合,直流10V通过双刀单掷继电器K2输出至双绞线,通过双绞线输入从设备双刀双掷继电器K3的主触点,从设备双刀双掷继电器K3的主触点与常闭触点连通,双刀双掷继电器K3常闭触点与整流桥连接,直流10V输入整流桥,整流桥对输入的电流进行整流可以做到输入直流电不区分接入的方向和极性,整流桥输入的直流电经过电阻限流加载至光耦输入端,光耦内部输入二极管发光导致输出晶体管导通,光耦输出晶体管输出端与MOS管Q1栅极相连,光耦输出晶体管导通将MOS管Q1栅极电平拉低至地电位MOS管Q1导通。从设备电源通过Q1加载至整机供电电源,从设备电源启动从设备开机,从设备启动后从CPU开始工作,从CPU控制MOS管Q2导通,MOS管Q2拉低MOS管Q1栅极电平至地保持Q1导通电源持续供电。从设备启动后,从CPU控制双刀双掷继电器K3动作,K3主触点与常开触点连通,K3常开触点与继电器输入端连通,双刀双掷继电器K3主触点与从无极性通信电路是直连的,此时从无极性通信电路通过双绞线与主设备连通,等待主设备发送通信信号。
主设备与从设备通信:主设备双刀双掷继电器K1常开触点与主无极性 通信电路是连通的,主设备输出直流10V一定时刻后,主CPU控制主设备双刀双掷继电器K1动作,双刀双掷继电器K1主触点连接常开触点,主无极性通信电路通过K1与双刀单掷继电器K2连通,通过双刀单掷继电器K2输出到双绞线与从设备的双刀双掷继电器K3连通。主设备等待接收从无极性通信电路通过双绞线发送的指令,如主设备在一定时刻内接收到指令则可探知到从设备正常启动,如在一定时刻内没有收到从设备发送的指令,则可判断从设备未正常启动,则重复进行一次启动循环。
主设备远程关闭从设备:主设备与从设备正常通信后,主设备向从设备发送关机指令,从无极性通信电路接收到指令后发送给从CPU,从CPU根据指令要求控制MOS管Q2关断,MOS管Q2关断则MOS管Q1栅极拉高,栅极电平拉高MOS管Q1关断,整机供电电源输入被断开,从设备关机,从设备双刀双掷继电器K3常开触点断开,常闭触点与主触点接通,从设备整流桥与外部连通。从设备关机后,主设备向从设备发送指令从设备因关机不会回复指令,主设备判断从设备正常关机,如从设备回复指令则主设备可判断从设备没有关机,则重复远程关闭从设备。探测到从设备正常关机后,操作员手动关闭主设备电源,主设备电源关闭,电子开关S1断开,双刀双掷继电器K1主触点与常闭触点连通,双刀单掷继电器K2断开。
工业实用性
本发明主设备远程控制从设备的电源启动与关闭,可保证从设备的操作安全性;本发明通过双绞线不区分极性连接主从设备,保证了连接的方便性;本发明节约了操作时间,提高操作效率。

Claims (4)

  1. 一种主从工控设备远程启动控制电路,该电路包括主设备电路部分和多个结构相同的从设备电路部分,主设备电路部分通过本身的继电器开关与多个从设备电路部分的继电器开关由双绞线连接;
    其中,主设备电路部分进一步包括主设备电源、双刀双掷继电器K1和双刀单掷继电器K2,主设备电源分别为10伏直流电源、主CPU及主无极性通信电路供电,10伏直流电源的输出通过电子开关S1与双刀双掷继电器K1连接,双刀双掷继电器K1的输出与双刀单掷继电器K2的输入连接,双刀单掷继电器K2的输出连接主从设备电路部分之间的双绞线一端,主CPU分别与电子开关S1、双刀双掷继电器K1及双刀单掷继电器K2的控制端连接,控制电子开关S1、双刀双掷继电器K1及双刀单掷继电器K2的工作状态,同时,主CPU的数据端口与主无极性通信电路的数据端口连接,实现两者之间的数据传输,主无极性通信电路的输出端与双刀双掷继电器K1的常开触点连接,当双刀双掷继电器K1由主CPU控制为常开触点连通时,主无极性通信电路实现与从设备电路部分的通信;
    其中,从设备电路部分进一步包括从设备电源、从CPU、整机供电电源、从无极性通信电路及双刀双掷继电器K3,双刀双掷继电器K3的主触点通过双绞线与主设备电路部分的双刀单掷继电器K2连接,双刀双掷继电器K3的常闭触点与整流桥的输入连接,整流桥的输出通过限流电阻R2与光耦的输入端连接,光耦的输出连接在MOS管Q1的栅极与地之间,控制MOS管Q1的导通或关闭状态,从而实现MOS管Q1输入端连接的从设备电源与MOS管Q1输出端连接的整机供电电源之间的导通或关闭,双刀双掷继电器K3的控制端与从CPU连接,由从CPU控制其开关状态,双刀双掷继电器K3的常开触点与从无极性通信电路的输入端 连接,从无极性通信电路的数据端与从CPU的数据接口连接,实现两者之间的数据通信,同时,从CPU的电平控制端口与连接在从设备电源输出端与地之间的MOS管Q2的栅极连接,控制MOS管Q2的导通或关闭,从而控制从设备电源与整机供电电源之间的导通或关闭。
  2. 根据权利要求1所述的主从工控设备远程启动控制电路,其中,所述主无极性通信电路和从无极性通信电路均具体采用无极性485通信模块,该无极性485通信模块之间具体采用自适应总线极性的RS-485串行总线标准通信协议方式进行数据通信。
  3. 根据权利要求1所述的主从工控设备远程启动控制电路,其中,在双刀双掷继电器K3的两个常开触点与从无极性通信电路连接的两根线路与地之间分别连接二极管D1和二极管D2。
  4. 根据权利要求1所述的主从工控设备远程启动控制电路,其中,所述主CPU和从CPU的型号均为STM32F103。
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