CN201926905U - LED display screen power source management system based on CAN bus - Google Patents
LED display screen power source management system based on CAN bus Download PDFInfo
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- CN201926905U CN201926905U CN201020633479XU CN201020633479U CN201926905U CN 201926905 U CN201926905 U CN 201926905U CN 201020633479X U CN201020633479X U CN 201020633479XU CN 201020633479 U CN201020633479 U CN 201020633479U CN 201926905 U CN201926905 U CN 201926905U
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model provides an LED display screen power source management system based on a CAN (Controller Area Network) bus. The system comprises a controller used for sending power source management control signals to an LED display screen, a first CAN node connected with the controller at a controller end, and a second CAN node close to an LED display screen end, wherein, the first CAN node is connected with the second CAN node through the CAN bus; and the second CAN node sends corresponding control signals to a power distribution cabinet of the LED display screen, which is connected with second CAN node, according to received data. The LED display screen power source management system provided by the utility model has the advantages that parameters transmitted from the controller end to the LED display screen end are reliable and have high error correcting ability, and remote operation of the LED display screen is achieved.
Description
Technical field
The utility model relates to electronic technology field, relates in particular to a kind of LED display power-supply management system based on the CAN bus.
Background technology
At present, the user requires very high to the automaticity of LED display, not only require the LED display image effect good, and requires the electric power system of LED display can straighforward operation.
But during LED display work, its current transformation is bigger, therefore the magnetic field around the LED display is very strong, if think the electric power system of straighforward operation LED display, must guarantee that the controller end is very reliable to the mode that the LED display end passes a parameter, and will have stronger error correcting capability.
The utility model content
For this reason, technical problem to be solved in the utility model is: a kind of LED display power-supply management system based on the CAN bus is provided, makes the controller end not only reliable to the mode that the LED display end passes a parameter, and have stronger error correcting capability.
So, the utility model provides a kind of LED display power-supply management system based on the CAN bus, be used for the power distribution cabinet of LED display is carried out power management, this system comprises: be used for to LED display send the controller of power management control signal, the CAN node that is connected with controller at the controller end and the 2nd CAN node of close LED display end, a described CAN node is connected with the 2nd CAN node by the CAN bus, and the 2nd CAN node sends control signal corresponding according to the data that receive and gives connected LED display power distribution cabinet.
Described the 2nd CAN node comprises: be used to receive on the CAN bus mutually should node data go forward side by side CAN bus driver that line level transforms, is connected with the CAN bus driver and is used for that the data that receive are carried out frame and judges and export the CAN bus controller of correct data and be used to and receive the data that the CAN bus controller is exported, and the power distribution cabinet of its connection is sent the microcontroller of control signal.
The 2nd CAN node also comprises: be used to be cascaded to the output interface of next CAN node, described microcontroller can send it back control signal on the CAN bus by described output interface by CAN bus controller, CAN bus driver successively.
Described controller is connected with a CAN node by serial ports or USB interface.
Because it is reliable that the CAN bus all has the transmission data, and the characteristics that antijamming capability is strong, so LED display power-supply management system based on the CAN bus described in the utility model, by the mode that adopts the CAN bus instruction of controller end is sent on LED display end the 2nd CAN node, by the 2nd CAN node the data that receive are carried out the power distribution cabinet that LED display is judged and correct control signal is sent to again to frame again, make the controller end not only reliable to the parameter that the LED display end transmits, and have stronger error correcting capability, realized straighforward operation to LED display.
Description of drawings
Fig. 1 is the described power-supply management system block diagram of the utility model embodiment;
Fig. 2 is the 2nd a CAN node composition function block diagram shown in Figure 1.
Embodiment
Below, in conjunction with the accompanying drawings the utility model is described in detail.
As shown in Figure 1, it is a kind of based on CAN(Controller Area Networ, controller local area network that present embodiment provides) the LED display power-supply management system of bus, be used for the power distribution cabinet of LED display is carried out power management.
This system comprises: be used for to the 2nd CAN node 14 that LED display sends the controller 11 of power management control signal, the CAN node 12 that is connected with controller at the controller end and close LED display end are connected with the LED display power distribution cabinet, a described CAN node 12 passes through the CAN bus and is connected with the 2nd CAN node 14.The 2nd CAN node 14 sends control signal corresponding according to the data that receive and gives connected LED display power distribution cabinet (not indicating among the figure).
Because CAN bus transfer signal, it exports distance, and transmission stability is strong.Therefore, the described LED display power-supply management system of present embodiment sends to the CAN node by the mode that adopts the CAN bus with the instruction of controller end, by the CAN node data that receive are carried out the power distribution cabinet that LED display is judged and correct control signal is sent to again to frame again, make the controller end not only reliable, and have stronger error correcting capability to the parameter that the LED display end transmits.
For example, controller 11 sends the power requirement to the LED display power distribution cabinet, promptly require the whole energized of power distribution cabinet, perhaps require the whole deenergizations of power distribution cabinet, perhaps require power distribution cabinet middle part subchannel is carried out power management, so, after a CAN node 12 receives the control command of controller 11, this order is handled, and control command is sent to the 2nd CAN node 14 of close LED display end by the CAN bus.The one CAN node 12 is near controllers 11, and it is indoor generally to be placed on Long-distance Control, and therefore communicating by letter between a CAN node 12 and the controller 11 can be adopted the mode of serial ports or USB.Controller 11 generally is exactly a controlling computer.
After the data that the 2nd CAN node 14 to the one CAN nodes 12 are sent, send control signal corresponding according to these data and give connected LED display power distribution cabinet, power distribution cabinet respective branch power supply is controlled.
As shown in Figure 2, the 2nd CAN node 14 comprises: be used to receive on the CAN bus mutually should node data go forward side by side CAN bus driver 141 that line level transforms, is connected with CAN bus driver 141 and is used for that the data that receive are carried out frame and judges and export the CAN bus controller 142 of correct data and be used to receive the data that CAN bus controller 142 is exported, and the power distribution cabinet of its connection is sent the microcontroller 143 of control signal.Wherein, CAN bus driver 141 by accessing port 145 receive on the CAN buses mutually should node data.
Further, CAN node 14 also comprises: be used to be cascaded to the output interface of next CAN node, described microcontroller can send it back control signal on the CAN bus by described output interface by CAN bus controller, CAN bus driver successively.
For example, after CAN bus driver 141 receives the data that controller 11 sends by accessing port 145, these data are carried out the level conversion processing, and the data after will handling send to CAN bus controller 142, after 142 pairs of data that receive of CAN bus controller are carried out the frame judgement, correct data are sent to microcontroller 143 again, and microcontroller 143 sends the control signal to the LED display power distribution cabinet according to the data that receive.It can be controlled each road power supply of power distribution cabinet, thereby has realized the straighforward operation to LED display.
In order to expand number of nodes, can increase the quantity of LED display power distribution cabinet.
As seen, the described LED display power-supply management system of present embodiment based on the CAN bus, realized true-time operation to the LED display power distribution cabinet, when emergency situations occurring, for example certain part of LED display is short-circuited, the LED display image is made mistakes, in the time of need in time handling, just can handle timely emergency situations by operation control 11.Use the described LED display power-supply management system of present embodiment, also can realize control to the LED display power distribution cabinet working time, for example opening the LED display power distribution cabinet in the morning the time starts working LED display, turn-off the LED display power distribution cabinet when temperature is high at noon, stop the work of LED display etc.
In sum, because it is reliable that the CAN bus all has the transmission data, and the characteristics that antijamming capability is strong, so described LED display power-supply management system of present embodiment based on the CAN bus, by the mode that adopts the CAN bus instruction of controller end is sent on LED display end the 2nd CAN node, by the 2nd CAN node the data that receive are carried out the power distribution cabinet that LED display is judged and correct control signal is sent to again to frame again, make the controller end not only reliable to the parameter that the LED display end transmits, and have stronger error correcting capability, realized straighforward operation to LED display.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. LED display power-supply management system based on the CAN bus, be used for the power distribution cabinet of LED display is carried out power management, it is characterized in that, comprise: be used for to LED display send the controller of power management control signal, the CAN node that is connected with controller at the controller end and the 2nd CAN node of close LED display end, a described CAN node is connected with the 2nd CAN node by the CAN bus, and the 2nd CAN node sends control signal corresponding according to the data that receive and gives connected LED display power distribution cabinet.
2. LED display power-supply management system according to claim 1, it is characterized in that, described the 2nd CAN node comprises: be used to receive on the CAN bus mutually should node data go forward side by side CAN bus driver that line level transforms, is connected with the CAN bus driver and is used for that the data that receive are carried out frame and judges and export the CAN bus controller of correct data and be used to and receive the data that the CAN bus controller is exported, and the power distribution cabinet of its connection is sent the microcontroller of control signal.
3. LED display power-supply management system according to claim 2, it is characterized in that, the 2nd CAN node also comprises: be used to be cascaded to the output interface of next CAN node, described microcontroller can send it back control signal on the CAN bus by described output interface by CAN bus controller, CAN bus driver successively.
4. LED display power-supply management system according to claim 1 is characterized in that, described controller is connected with a CAN node by serial ports or USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020633479XU CN201926905U (en) | 2010-11-30 | 2010-11-30 | LED display screen power source management system based on CAN bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020633479XU CN201926905U (en) | 2010-11-30 | 2010-11-30 | LED display screen power source management system based on CAN bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201926905U true CN201926905U (en) | 2011-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020633479XU Expired - Fee Related CN201926905U (en) | 2010-11-30 | 2010-11-30 | LED display screen power source management system based on CAN bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201926905U (en) |
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2010
- 2010-11-30 CN CN201020633479XU patent/CN201926905U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20161130 |