CN102122164A - Remote programmable logic controller (PLC) automatic control system for light-emitting diode (LED) display screen - Google Patents
Remote programmable logic controller (PLC) automatic control system for light-emitting diode (LED) display screen Download PDFInfo
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Abstract
The invention discloses a remote programmable logic controller (PLC) automatic control system for a light-emitting diode (LED) display screen. The remote PLC automatic control system comprises a PLC control module, a display screen control module, a power distribution cabinet, a PLC, a power supply module, a state monitoring module and an LED display screen, wherein the PLC and the power supply module are integrated in the power distribution cabinet; the PLC control module is used for sending instructions for starting and monitoring the LED display screen to the PLC; the PLC is used for controlling the power supply module to supply power to the LED display screen, controlling the state monitoring module to monitor state data of the LED display screen and transmitting the state data acquired by the state monitoring module to the PLC control module; and the display screen control module is connected with the PLC control module and is used for displaying an alarm and taking corresponding emergency measures when the state data of the LED display screen are abnormal. By the remote control system, the LED display screen can be remotely monitored and controlled conveniently without in-site control of personnel, and the display screen can be safely used.
Description
Technical field
The present invention relates to a kind of LED display field, relate in particular to a kind of LED display remote PLC automatic control system.
Background technology
Continuous development along with the LED display industry; people are more and more higher to the requirement of LED display electric power system; traditional distribution electric power system is based on manual control chopper switch; what have is equipped with simple timer to realize simple self-timing control; this control does not reach automatically control and to the urgent requirement of control automatically of display screen emergency case of modernization at all, as: the time-sharing power of display screen, ABC, the automatic power-off protection of high temperature, fire alarm monitoring and power-off protection etc.
China utility model patent CN201075249Y discloses a kind of LED display long distance control system, comprise the LED display body, video playback opertaing device and panel box, comprise a plurality of display units in the LED display body, display unit comprises receiving card, a controller is set in the panel box, corresponding ambient condition monitor card is set in LED display body and the display unit wherein, controller produces Monitoring and Controlling signal or executivecontrol function, the ambient condition monitor card is according to the ambient condition data of Monitoring and Controlling signal collection LED display body and each display unit, or the relevant operation of execution, configuration power circuit carrier communication device between panel box and the LED display body, panel box provides power supply by power circuit to LED display body and display unit wherein by the power circuit carrier communication device, simultaneously, finish information interaction between controller and the ambient condition monitor card.In this patent, utilization is provided with controller and controls the ambient condition monitor card that is built in the LED display in panel box, realizes the remote monitoring of LED display.But in this patent, do not announce the detail content of described controller and by the control environment specific implementation process of condition monitoring of controller, and in this patent, controller is arranged in the panel box, debug difficulties can not be carried out Long-distance Control to controller.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of LED display remote PLC automatic control system, is the remote auto control that core realizes LED display with PLC.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of LED display remote PLC automatic control system is provided, it is characterized in that: comprise PLC control module, display screen control module, power distribution cabinet, PLC, power module, monitoring module and LED display, wherein said PLC and described power module are integrated in the power distribution cabinet; Described PLC control module sends to described PLC and starts LED display and the order of monitoring LED display; Described PLC controls described power module and provides power supply for described LED display, controls the status data that described monitoring module is monitored described LED display, and sends the status data that described monitoring module is collected to described PLC control module; Described display screen control module is connected with described PLC control module, display alarm and take corresponding emergency measure when the LED display status data is unusual.
Wherein, described monitoring module is arranged in the described LED display, and described monitoring module comprises that supply monitor, Temperature Humidity Sensor, smoke transducer and luminance sensor collect the power supply status of described LED display, humiture, smoke intensity and brightness respectively.
Wherein, described PLC control module also comprises the power fail alarm unit, when power supply status data exception that described monitoring module is collected, and the display alarm of described power fail alarm unit.
Wherein, described display screen control module takes corresponding emergency measure to comprise when the LED display status data is unusual: when humiture is unusual, regulate the air-conditioning of LED display system and the running status of blower fan; When smoke intensity was unusual, control LED display power supply cut off the power supply automatically; When brightness is unusual, send a warning.
Wherein, described LED display comprises a plurality of display units, and each described display unit of described electric power source pair of module is powered separately.
Wherein, described PLC control module and described display screen control module are arranged in same the computing machine.
Wherein, described PLC control module is arranged in first computing machine, and described display screen control module is arranged in second computing machine, and described first computing machine is connected by network with described second computing machine.
Wherein, described power distribution cabinet quantity is a plurality of, all be provided with PLC in each power distribution cabinet, described LED display remote PLC automatic control system also comprises communication expansion board that connects described PLC and the RS422/RS232 converter that is connected described PLC control module, and described PLC control module and described a plurality of PLC adopt the cascade system of RS422 bus transfer.
Wherein, described power distribution cabinet quantity is a plurality of, all be provided with PLC in each power distribution cabinet, described LED display remote PLC automatic control system also comprises communication expansion board that connects described PLC and the RS422/RS232 converter that is connected described PLC control module, the cascade system that described PLC control module is mixed with described a plurality of PLC employing RS422 bus transfer and Optical Fiber Transmission.
Wherein, described power distribution cabinet quantity is a plurality of, all be provided with PLC in each power distribution cabinet, described LED display remote PLC automatic control system also comprises communication expansion board that connects described PLC and the RS422/RS232 converter that is connected described PLC control module, and described PLC control module and described a plurality of PLC adopt the cascade system of Optical Fiber Transmission.
The invention has the beneficial effects as follows: with PLC and PLC control module is core, the integrated PLC that is provided with in power distribution cabinet, and provide power supply for LED display by PLC control power module, realized Long-distance Control to LED display, and PLC receives the order that the PLC control module is sent, this order can be imported to the PLC control module in the special-purpose pulpit of placing the PLC control module as required by operating personnel, realized Long-distance Control again to PLC, do not need so manually to control at the scene, with regard to the startup of may command LED display or close.PLC also controls the state parameter of collecting LED display, when the LED display status data is unusual, can alarm demonstration and take corresponding emergency measure, can also remind operating personnel by this alarm, also can manually boot emergency measure, under the situation of Long-distance Control, also can realize the safe handling of LED display like this by operating personnel.
Description of drawings
Fig. 1 is the structured flowchart of LED display remote PLC automatic control system of the present invention;
Fig. 2 is the cascade graphs that LED display remote PLC automatic control system of the present invention adopts the RS422 bus transfer when having a plurality of PLC;
Fig. 3 is the cascade graphs that LED display remote PLC automatic control system of the present invention adopts Optical Fiber Transmission and RS422 bus transfer to mix when having a plurality of PLC;
Fig. 4 is the cascade graphs that LED display remote PLC automatic control system of the present invention adopts fiber-optic communications traffic when having a plurality of PLC;
Fig. 5 is the operation interface one of LED display remote PLC automatic control system of the present invention;
Fig. 6 is the operation interface two of LED display remote PLC automatic control system of the present invention;
Fig. 7 is the operation interface three of LED display remote PLC automatic control system of the present invention;
Fig. 8 is the operation interface four of LED display remote PLC automatic control system of the present invention;
Fig. 9 is the operation interface five of LED display remote PLC automatic control system of the present invention.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
PLC, Chinese: programmable logic controller (PLC), English full name: Programmable logic Controller.
See also Fig. 1, the invention provides a kind of LED display remote PLC automatic control system, comprise PLC control module 1, display screen control module 2, power distribution cabinet 3, PLC4, power module 5, monitoring module 6 and LED display 7, wherein PLC4 and power module 5 are integrated in the power distribution cabinet 3; Described PLC control module 1 sends to described PLC4 and starts LED display and the order of monitoring LED display; Described PLC4 controls described power module 5 and provides power supply for described LED display 7, control the status data of the described LED display 7 of described monitoring module 6 monitoring, and send the status data that described monitoring module 6 is collected to described PLC control module 1; Described display screen control module 2 is connected with described PLC control module 1, display alarm and take corresponding emergency measure when the LED display status data is unusual.
LED display remote PLC automatic control system of the present invention is to be core with PLC4 and PLC control module 1, described PLC control module 1 can be accepted the order of the startup LED display and the monitoring LED display of artificial input, order is sent to PLC4, described PLC4 resolves the order that PLC control module 1 is sent, if this is ordered to starting LED display, then PLC4 control power module 5 provides power supply for LED display 7, power module 5 can be to comprise a plurality of relays, by the closed of relay or disconnect the startup of control LED display 7 or close, PLC4 is connected with relay, the state of pilot relay reaches the effect that control LED display 7 starts or closes, operated by rotary motion has air-conditioning system to be used for the working environment of LED display 7 is remained on a suitable temperature humidity range in the LED display 7, when LED display 7 starts, power module 5 air-conditioning in LED display 7 simultaneously provides power supply, similarly, air-conditioning also can be realized being powered on by a plurality of relay control substeps; The order of sending to PLC4 when PLC control module 1 is when monitoring LED display, described PLC4 state of a control monitoring module 6 work, described monitoring module 6 is collected the status data of LED display 7, and this status data fed back to described PLC4, described PLC4 passes to status data PLC control module 1 again.Described PLC control module 1 also connects display screen control module 2, and when LED display 7 status datas were unusual, 2 display alarms of display screen control module were also taked corresponding emergency measure.PLC control module 1 can be arranged in the special-purpose pulpit, by operating personnel it is managed.
LED display remote PLC automatic control system provided by the invention, integrated PLC4 and the power module 5 of being provided with in power distribution cabinet 3, and provide power supply for LED display 7 by PLC4 control power module 5, realized Long-distance Control to LED display 7, and PLC4 receives the order that PLC control module 1 is sent, this order can be imported to PLC control module 1 in the special-purpose pulpit of placing PLC control module 1 as required by operating personnel, realized Long-distance Control again to PLC4, do not need so manually to control at the scene, with regard to the startup of may command LED display 7 or close.Because artificial Long-distance Control, also can be implemented in definite time to allow LED display 7 start and close.The monitoring module 6 of LED display remote PLC automatic control system of the present invention is collected the status data of LED display 7 under PLC4 control, when LED display 7 status datas are unusual, display screen control module 2 can be alarmed demonstration and take corresponding emergency measure, can also remind operating personnel by this alarm, also can manually boot emergency measure by operating personnel.Under the situation of Long-distance Control, also can realize the safe handling of LED display like this.
Preferably, described monitoring module 6 is arranged in the described LED display, described monitoring module 6 comprises supply monitor, Temperature Humidity Sensor, smoke transducer and luminance sensor, certain described monitoring module 6 is not limited to include only above-mentioned said four kinds of sensors, can also set up other sensor as required.Described supply monitor is collected the power supply status of LED display, and Temperature Humidity Sensor is collected the humiture of LED display body, and smoke transducer is collected the inside and outside smokescope of LED display, and luminance sensor is collected the brightness of LED display screen display.Each sensor all is independently, start working according to the corresponding sensor of instruction that PLC4 sends, particularly, when operating personnel need detect a certain state parameter of LED display 7, the corresponding order of input, PLC control module 1 sends to PLC4 with order, the status data that PLC4 controls corresponding working sensor and collects, be that monitoring module 6 interior supply monitor, Temperature Humidity Sensor, smoke transducer and luminance sensors may be all to work simultaneously, also may be part work, even may not work.
Preferably, described PLC control module 1 also comprises the power fail alarm unit, when power supply status data exception that described monitoring module 6 is collected, and the display alarm of described power fail alarm unit.Described power supply status data exception may comprise power delivery failure LED display fail air-conditioning system in startups, the LED display fail startup or supply voltage overrun etc., when abnormal conditions occurring, the display alarm of power fail alarm unit, for example a display interface can be set in PLC control module 1, power light is set on the display interface shows power supply real-time condition in the power distribution cabinet, when supply voltage exceeds normal range, the red prompting of pilot lamp; Or in the pulpit that is placed with the PLC control module, hummer is set, when abnormity of power supply, hummer sends the sound prompting; Certainly can also be other feasible modes.
LED display remote PLC automatic control system of the present invention, display screen control module 2 can be taked corresponding emergency measure when LED display 7 status datas are unusual, in the specific implementation, emergency measure comprises: when humiture is unusual, regulate the air-conditioning of LED display system and the running status of blower fan, like this with LED display working environment Temperature and Humidity Control a suitable scope, prolong the serviceable life of LED display, when occur abnormal high temperature can't be immediately with adjustment during to OK range, can also control LED display and cut off the power supply automatically, prevent because the high temperature LED display is damaged; When smoke intensity is unusual, the control LED display is cut off the power supply automatically, when the LED display smokescope occurs when unusual, often reason is to occur the condition of a fire, if do not controlled, except the LED display operation irregularity, also possible initiation fire, therefore when smokescope exceeded standard, display screen control module control LED display outage automatically reduced loss to prevent fortuitous event; When brightness is unusual, send a warning, luminance sensor is collected the actual data of lighting of LED display, because brightness may cause the displaying contents of LED display unclear when unusual, poor visibility, therefore display screen when brightness is unusual, send a warning remind operating personnel that screen intensity is regulated so that LED display in a suitable brightness range, the observability that makes LED display fully reaches propaganda objective in optimum range.
In a specific embodiment, described LED display comprises a plurality of display units, and each described display unit of described electric power source pair of module is powered separately.LED display needs content displayed more for a long time, generally be with a plurality of display units formation display screen that combines, power module can be provided with the relay of corresponding each display unit at power module respectively to each display unit power supply, controls the startup and the disconnection of each relay separately.Under this pattern, can control each display unit and not start simultaneously, but a startup at regular intervals can prevent disposable startup LED display because power impacts to electrical network greatly.
In a specific embodiment, PLC control module and display screen control module are arranged in same the computing machine.Computing machine connects power distribution cabinet and LED display respectively, and in computing machine, PLC control module and display screen control module have separately independently operation interface, and operation interface can switch mutually according to operating personnel's needs.This computing machine can also need content displayed to the LED display issue further.Multiple function is integrated on the computing machine, make full use of the software and hardware resources of computing machine, and the handled easily personnel controls to LED display.
In one embodiment, the PLC control module is arranged in first computing machine, and the display screen control module is arranged in second computing machine, and described first computing machine is connected by network with described second computing machine.PLC control module and display screen control module are arranged on the different computing machines, can show both operation interfaces simultaneously, the handled easily personnel overall situation is grasped the duty of LED display.
In one embodiment, has a more than power distribution cabinet, be respectively the zones of different power supply of a jumbotron LED display or power for the different LED display screen of the display screen cluster is made up of a plurality of LED display, each power distribution cabinet is provided with PLC and power module respectively.Power distribution cabinet need couple together by same PLC control module control.See also Fig. 2, LED display remote PLC automatic control system has a plurality of PLC, the PLC control module is arranged on the PC, be connected with communication expansion board RS485 on the PLC, serial ports is connected with the RS422/RS232 converter on the PC, and PC and all PLC adopt the cascade of RS422 bus transmission model together.In this cascade system, preferably, the distance between PC and connected PLC and adjacent two PLC is in 300 meters.
See also Fig. 3, in one embodiment, LED display remote PLC automatic control system with a plurality of PLC adopts optical fiber communication RS422 bus transfer cascade system, is connected with communication expansion board RS485 on the PLC, and serial ports is connected with the RS422/RS232 converter on the PC.PC and PLC adopt the fiber-optic communications traffic mode, in actual applications, be provided with the serial ports fibre optic modem at the optical fiber two ends toward contact, at the PC end, the PC serial ports is connected with the serial ports fibre optic modem, at the PLC end, the serial ports fibre optic modem is connected with PLC by communication expansion board RS485; Adopt the RS422 bus transmission model between a plurality of PLC.Certainly this is not unique embodiment, when reality is used, can adopt and use RS422 bus transfer connected mode between PC and PLC, selects Optical Fiber Transmission or RS422 bus transmission model flexibly for use between two adjacent PLC.In general, when distance is in 300 meters, preferentially select the RS422 bus transmission model for use, when distance is preferentially selected the Optical Fiber Transmission mode for use in time more than 300 meters.
See also Fig. 4, in one embodiment, the LED display remote PLC automatic control system with a plurality of PLC adopts the Optical Fiber Transmission cascade system, is connected with communication expansion board RS485 on the PLC, and serial ports is connected with the RS422/RS232 converter on the PC.Preferably, in this cascade system, the distance between PC and PLC and adjacent two PLC is all more than 300 meters.Tend to be provided with the serial ports fibre optic modem at the optical fiber two ends in the Optical Fiber Transmission cascade system, at the PC end, the PC serial ports is connected with the serial ports fibre optic modem, and at the PLC end, the serial ports fibre optic modem is connected with PLC by communication expansion board RS485.Because Optical Fiber Transmission has long transmission distance, this cascade system can be effectively couples together the PLC of apart from each other by a PC control, realizes the cluster control of LED display.
During actual the use, the communication expansion board is connected in the master unit of PLC, is used for RS485 (422) data communication, and described PLC can select Mitsubishi FX2N series Programmable logic Controller (PLC) for use, and the communication expansion board can be selected Mitsubishi FX2N-485-BD for use; In the group of planes net that is combined into by a plurality of PLC, the PLC of last website should connecting terminal resistance.
Consult Fig. 5 to Fig. 9, the practical operation of LED display remote PLC automatic control system of the present invention is to finish by the PLC control module that is installed in the host computer, during this remote PLC control system works, its operation steps: 1, [website setting] button on the single-click operation interface, website quantity is set and is numbered, as shown in Figure 5 by sending the PLC of button with each station; 2, the System self-test button on the single-click operation interface, whether the detected website of observing system (power distribution cabinet) quantity conforms to the website quantity of software setting, as shown in Figure 6; 3, finish website and be provided with after, click [sensor setting] button, the sensor warning bound threshold value of each website is set, and is selected to enable sensor, as shown in Figure 7; 4, finish sensor and be provided with after, click [sensor measurement] button, observe whether detect display result in real time consistent with actual condition value, reset as if inconsistent then returning, as shown in Figure 8; 5, additional if desired regularly the startup and closing function, then click [timed power on/off] button is provided with and selects timer to enable option, as shown in Figure 9; 6 finish necessity such as sensor, timed power on/off be provided with after, click [remote activation (the S)] button on the control panel behind click [initial station point] button, automatically power on for the display screen of initial station point power supply, as powering on also need for the display screen of other website power supplies, can continue to click [next website] button and carry out the identical setting that repeats.Can click [logging off] button after setting completed logs off.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. LED display remote PLC automatic control system, it is characterized in that: comprise PLC control module, display screen control module, power distribution cabinet, PLC, power module, monitoring module and LED display, wherein said PLC and described power module are integrated in the power distribution cabinet;
Described PLC control module sends to described PLC and starts LED display and the order of monitoring LED display;
Described PLC controls described power module and provides power supply for described LED display, controls the status data that described monitoring module is monitored described LED display, and sends the status data that described monitoring module is collected to described PLC control module;
Described display screen control module is connected with described PLC control module, display alarm and take corresponding emergency measure when the LED display status data is unusual.
2. LED display remote PLC automatic control system according to claim 1, it is characterized in that: described monitoring module is arranged in the described LED display, and described monitoring module comprises that supply monitor, Temperature Humidity Sensor, smoke transducer and luminance sensor collect the power supply status of described LED display, humiture, smoke intensity and brightness respectively.
3. LED display remote PLC automatic control system according to claim 2, it is characterized in that: described PLC control module also comprises the power fail alarm unit, when power supply status data exception that described monitoring module is collected, the display alarm of described power fail alarm unit.
4. LED display remote PLC automatic control system according to claim 2, it is characterized in that: described display screen control module takes corresponding emergency measure to comprise when the LED display status data is unusual: when humiture is unusual, regulate the air-conditioning of LED display system and the running status of blower fan; When smoke intensity was unusual, control LED display power supply cut off the power supply automatically; When brightness is unusual, send a warning.
5. according to each described LED display remote PLC automatic control system of claim 1-3, it is characterized in that: described LED display comprises a plurality of display units, and each described display unit of described electric power source pair of module is powered separately.
6. LED display remote PLC automatic control system according to claim 1 is characterized in that: described PLC control module and described display screen control module are arranged in same the computing machine.
7. LED display remote PLC automatic control system according to claim 1, it is characterized in that: described PLC control module is arranged in first computing machine, described display screen control module is arranged in second computing machine, and described first computing machine is connected by network with described second computing machine.
8. LED display remote PLC automatic control system according to claim 1, it is characterized in that: described power distribution cabinet quantity is a plurality of, all be provided with PLC in each power distribution cabinet, described LED display remote PLC automatic control system also comprises communication expansion board that connects described PLC and the RS422/RS232 converter that is connected described PLC control module, and described PLC control module and described a plurality of PLC adopt the cascade system of RS422 bus transfer.
9. LED display remote PLC automatic control system according to claim 1, it is characterized in that: described power distribution cabinet quantity is a plurality of, all be provided with PLC in each power distribution cabinet, described LED display remote PLC automatic control system also comprises communication expansion board that connects described PLC and the RS422/RS232 converter that is connected described PLC control module, the cascade system that described PLC control module is mixed with described a plurality of PLC employing RS422 bus transfer and Optical Fiber Transmission.
10. LED display remote PLC automatic control system according to claim 1, it is characterized in that: described power distribution cabinet quantity is a plurality of, all be provided with PLC in each power distribution cabinet, described LED display remote PLC automatic control system also comprises communication expansion board that connects described PLC and the RS422/RS232 converter that is connected described PLC control module, and described PLC control module and described a plurality of PLC adopt the cascade system of Optical Fiber Transmission.
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