CN105955187A - PLC-based low-voltage safety control apparatus - Google Patents
PLC-based low-voltage safety control apparatus Download PDFInfo
- Publication number
- CN105955187A CN105955187A CN201610455934.3A CN201610455934A CN105955187A CN 105955187 A CN105955187 A CN 105955187A CN 201610455934 A CN201610455934 A CN 201610455934A CN 105955187 A CN105955187 A CN 105955187A
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- China
- Prior art keywords
- plc
- coupled
- work equipment
- module
- control device
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
Abstract
Disclosed is a PLC-based low-voltage safety control apparatus. The apparatus is characterized in that a panel of the control apparatus is provided with a touch screen and a control panel which are coupled to a PLC controller; an AD module is connected with an input interface for converting input analog signals into digital signals and is connected with the PLC controller; an electronic voltage transformer and an electronic current transformer are coupled to a work device and are connected with the PLC controller through an active filter; a UPS is coupled to the PLC controller for providing an uninterrupted work power supply for the control apparatus; an acousto-optic alarm is coupled to the PLC controller for giving an acousto-optic alarm; and a GPRS module is coupled to the PLC controller for communication with a control chamber. According to the invention, complex logic control is completed by use of a PLC technology, secondary wiring of each switch is enabled to be simple and clear, wrong operation of work personnel is reduced, and the safety of the work device and a control system are improved.
Description
Technical field
The invention belongs to distribution automation field, particularly relate to a kind of low-voltage safety based on PLC and control device.
Background technology
The operating mode of the low-voltage power system in some Engineering operation building sites specifically includes that black state of starting operating at present, emergent operating mode, electrically operated operating mode and the operating mode of falling power transmission, according to different operating modes, system to make different response actions, it is crucial that operation timely and accurate to various switches, at present in engineering project mesolow power system, for realizing complicated the controlling and correct operation of above-mentioned various switch, the mutual locking of the secondary contact between employing substantial amounts of relay and switching, one time investment cost is big, and whole electrical secondary system wiring is intricate, make system reliability poor, wiring is complicated, installation and debugging time length and maintenance difficult.
Summary of the invention
The present invention solves the poor reliability of current low voltage control device, wiring complexity, installation and debugging time length and the technical problem of maintenance difficult, propose a kind of low-voltage safety based on PLC and control device.
The technical scheme is that a kind of low-voltage safety based on PLC controls device, it is characterised in that: on the panel of described control device, touch screen is installed and control panel is respectively coupled to PLC, for man-machine interaction；Input interface is connected for the input of signal with input equipment；A/D module is connected with described input interface and the analogue signal of input is converted into digital signal, and is connected with described PLC；Described PLC is connected with optical coupling module will output signal to work equipment by photoelectric coupling；Electronic voltage mutual induction device, electronic current transducer are respectively coupled to described work equipment for detecting running voltage and the operating current of described work equipment, and are connected with described PLC by active filter；Ups power, is coupled to described PLC for providing non-stop run power supply for described control device；Audible-visual annunciator, is coupled to described PLC for sound and light alarm；GPRS module, is coupled to described PLC for communicating with OPS.
Further, described control panel includes display lamp module and button module, and each button both corresponds to a display lamp, and when button is pressed, corresponding display lamp will be bright, is used for pointing out button to press；Described touch screen is connected with described PLC by serial ports, has operation study course and the function of parameter setting demonstrating described control device.
Further, described active filter harmonic wave in filtering appts, improves the anti-interference of described control device；Described PLC analyzes the running status of described work equipment according to the voltage and current of described electronic voltage mutual induction device, the described work equipment of electronic current transducer detection, if be detected that described work equipment operation exception then can be reported to the police by described audible-visual annunciator and by described GPRS module, fault message is sent to described OPS, simultaneously at the fault message that described touch screen display is concrete, assist staff that described work equipment is overhauled.
Further, described ups power is connected with double switch power, and described double switch power is connected with emergency generator, and described emergency generator is connected with trigger, and above-mentioned trigger is connected with described optical coupling module；Described twin-power switch automatically switches power to described emergency generator end when mains failure being detected；When described control device detects that working site has a power failure, described PLC will export enabling signal, and described trigger starts the work of described emergency generator and continues as described work equipment and described control device provides electric energy.
Further, when staff is unable to reach scene, OPS can utilize wireless network and described control device communication can be with the running parameter of remotely located described control device and the running status checking described work equipment by described GPRS module.
Benefit of the present invention: the present invention utilizes PLC technology to complete the logic control of complexity, corresponding switchgear is directly controlled with the output module of PLC device, thus realize the safe and orderly control to low-voltage electric system, and removing the chain wiring of each switch room, the secondary connection making each switch is simple and clear；Have employed active filter makes device improve capacity of resisting disturbance, with be connected the crosstalk avoiding between alternating current-direct current between controlled device by optocoupler, the operation interface of hommization decreases the maloperation of staff, improves work equipment and the safety of control system.
Accompanying drawing explanation
Fig. 1 is the theory diagram of control device of the present invention.
In figure, 1-PLC controller；2-touch screen；3-control panel；4-active filter；5-electronic voltage mutual induction device；6-electronic current transducer；7-emergency generator；8-trigger；9-UPS power supply；10-optical coupling module；11-audible-visual annunciator；12-GPRS module；13-input interface；14-AD module；15-double switch power；16-work equipment；31-display lamp module；32-button module.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining the present invention, is not intended to limit the scope of the present invention.
Needing to illustrate in advance, " coupling " includes but not limited to " physical connection ", such as, can be connected by cable, it is also possible to " connect " by the way of photoelectric coupling or electromagnetic coupled between the operation PLC 1 shown in Fig. 1 and audible-visual annunciator 11.
Embodiment: a kind of low-voltage safety based on PLC controls device, and the method provided the present invention in conjunction with accompanying drawing elaborates.
A kind of low-voltage safety based on PLC controls device, it is characterised in that: touch screen 2 is installed on the panel of described control device and control panel 3 is respectively coupled to PLC 1, for man-machine interaction；Input interface 13 is connected for the input of signal with input equipment；A/D module 14 is connected with described input interface 13 and the analogue signal of input is converted into digital signal, and is connected with described PLC 1；Described PLC 1 is connected with optical coupling module 10 will output signal to work equipment 16 by photoelectric coupling；Electronic voltage mutual induction device 5, electronic current transducer 6 are respectively coupled to described work equipment 16 for detecting running voltage and the operating current of described work equipment 16, and are connected with described PLC 1 by active filter 4；Ups power 9, is coupled to described PLC 1 for providing non-stop run power supply for described control device；Audible-visual annunciator 11, is coupled to described PLC 1 for sound and light alarm；GPRS module 12, is coupled to described PLC 1 for communicating with OPS.
Further, described control panel 3 includes display lamp module 31 and button module 32, and each button both corresponds to a display lamp, and when button is pressed, corresponding display lamp will be bright, is used for pointing out button to press；Described touch screen 2 is connected with described PLC 1 by serial ports, has operation study course and the function of parameter setting demonstrating described control device.
Further, the described active filter 4 harmonic wave in filtering appts, improves the anti-interference of described control device；Described PLC 1 analyzes the running status of described work equipment 16 according to the voltage and current of described electronic voltage mutual induction device 5, the described work equipment 16 of electronic current transducer 6 detection, if be detected that described work equipment 16 operation exception then can be reported to the police by described audible-visual annunciator 11 and by described GPRS module 12, fault message is sent to described OPS, on described touch screen 2, show concrete fault message simultaneously, assist staff that described work equipment 16 is overhauled.
Further, described ups power 9 is connected with double switch power 15, and described double switch power 15 is connected with emergency generator 7, and described emergency generator 7 is connected with trigger 8, and above-mentioned trigger 8 is connected with described optical coupling module 10；Described twin-power switch automatically switches power to described emergency generator 7 end when mains failure being detected；When described control device detects that working site has a power failure, described PLC 1 will export enabling signal, and described trigger 8 starts the work of described emergency generator 7 and continues as described work equipment 16 and described control device provides electric energy.
Further, when staff is unable to reach scene, OPS can utilize wireless network and described control device communication can be with the running parameter of remotely located described control device and the running status checking described work equipment 16 by described GPRS module 12.
The above; being only the detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.
Claims (4)
1. a low-voltage safety based on PLC controls device, it is characterised in that:
The panel of described control device is provided with touch screen (2) and control panel (3) is respectively coupled to PLC (1), for man-machine interaction；Input interface (13) is connected for the input of signal with input equipment；A/D module (14) is connected with described input interface (13) and the analogue signal of input is converted into digital signal, and is connected with described PLC (1)；Described PLC (1) is connected with optical coupling module (10) will output signal to work equipment (16) by photoelectric coupling；Electronic voltage mutual induction device (5), electronic current transducer (6) are respectively coupled to described work equipment (16) and are used for detecting running voltage and the operating current of described work equipment (16), and are connected with described PLC (1) by active filter (4)；Ups power (9), is coupled to described PLC (1) for providing non-stop run power supply for described control device；Audible-visual annunciator (11), is coupled to described PLC (1) for sound and light alarm；GPRS module (12), is coupled to described PLC (1) for communicating with OPS.
A kind of low-voltage safety based on PLC the most according to claim 1 controls device, it is characterized in that: described control panel (3) includes display lamp module (31) and button module (32), each button both corresponds to a display lamp, when button is pressed, corresponding display lamp will be bright, is used for pointing out button to press；Described touch screen (2) is connected with described PLC (1) by serial ports, has operation study course and the function of parameter setting demonstrating described control device.
A kind of low-voltage safety based on PLC the most according to claim 1 controls device, it is characterised in that: the described active filter (4) harmonic wave in filtering appts, improves the anti-interference of described control device；The voltage and current of the described work equipment (16) that described PLC (1) detects according to described electronic voltage mutual induction device (5), electronic current transducer (6) analyzes the running status of described work equipment (16), if be detected that described work equipment (16) operation exception then can be reported to the police by described audible-visual annunciator (11) and by described GPRS module (12), fault message is sent to described OPS, simultaneously at the fault message that the upper display of described touch screen (2) is concrete, assist staff that described work equipment (16) is overhauled.
A kind of low-voltage safety based on PLC the most according to claim 2 controls device, it is characterized in that: described ups power (9) is connected with double switch power (15), described double switch power (15) is connected with emergency generator (7), described emergency generator (7) is connected with trigger (8), and the above-mentioned trigger of institute (8) is connected with described optical coupling module (10)；Described twin-power switch automatically switches power to described emergency generator (7) end when mains failure being detected；When described control device detects that working site has a power failure, described PLC (1) will export enabling signal, and described trigger (8) starts described emergency generator (7) work and continues as described work equipment (16) and described control device provides electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610455934.3A CN105955187A (en) | 2016-06-22 | 2016-06-22 | PLC-based low-voltage safety control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610455934.3A CN105955187A (en) | 2016-06-22 | 2016-06-22 | PLC-based low-voltage safety control apparatus |
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| CN105955187A true CN105955187A (en) | 2016-09-21 |
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| CN201610455934.3A Pending CN105955187A (en) | 2016-06-22 | 2016-06-22 | PLC-based low-voltage safety control apparatus |
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Citations (7)
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| CN201556072U (en) * | 2009-09-02 | 2010-08-18 | 曹泽林 | Programmable controller |
| CN201749363U (en) * | 2010-08-09 | 2011-02-16 | 重庆科凯前卫风电设备有限责任公司 | Detecting equipment for control system of wind turbine |
| CN201877838U (en) * | 2010-12-14 | 2011-06-22 | 广西电网公司南宁供电局 | Dynamic reactive voltage compensation system of magnetic valve type controllable reactor |
| US20130085692A1 (en) * | 2011-09-30 | 2013-04-04 | Samsung Electro-Mechanics Co., Ltd. | Power measuring system |
| CN104135065A (en) * | 2014-08-11 | 2014-11-05 | 渤海大学 | Double-circuit power supply self-resetting control device and method for large-scale hotel with emergency power supply |
| CN204578208U (en) * | 2015-05-07 | 2015-08-19 | 张大伟 | A kind of emergency service control system |
| CN105562195A (en) * | 2015-11-30 | 2016-05-11 | 重庆金鑫智慧科技有限公司 | Intelligent assistant mine mineral processing device based on IOT (Internet of Things) |
-
2016
- 2016-06-22 CN CN201610455934.3A patent/CN105955187A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201556072U (en) * | 2009-09-02 | 2010-08-18 | 曹泽林 | Programmable controller |
| CN201749363U (en) * | 2010-08-09 | 2011-02-16 | 重庆科凯前卫风电设备有限责任公司 | Detecting equipment for control system of wind turbine |
| CN201877838U (en) * | 2010-12-14 | 2011-06-22 | 广西电网公司南宁供电局 | Dynamic reactive voltage compensation system of magnetic valve type controllable reactor |
| US20130085692A1 (en) * | 2011-09-30 | 2013-04-04 | Samsung Electro-Mechanics Co., Ltd. | Power measuring system |
| CN104135065A (en) * | 2014-08-11 | 2014-11-05 | 渤海大学 | Double-circuit power supply self-resetting control device and method for large-scale hotel with emergency power supply |
| CN204578208U (en) * | 2015-05-07 | 2015-08-19 | 张大伟 | A kind of emergency service control system |
| CN105562195A (en) * | 2015-11-30 | 2016-05-11 | 重庆金鑫智慧科技有限公司 | Intelligent assistant mine mineral processing device based on IOT (Internet of Things) |
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Application publication date: 20160921 |
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