CN110556073B - Multi-path LED display system capable of dynamically increasing and decreasing number and control method - Google Patents
Multi-path LED display system capable of dynamically increasing and decreasing number and control method Download PDFInfo
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- CN110556073B CN110556073B CN201910864283.7A CN201910864283A CN110556073B CN 110556073 B CN110556073 B CN 110556073B CN 201910864283 A CN201910864283 A CN 201910864283A CN 110556073 B CN110556073 B CN 110556073B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
The utility model provides a multichannel LED display system that can dynamic increase and decrease quantity, includes control host computer and a plurality of LED equipment of electric connection in proper order, and wherein first LED equipment and control host computer electric connection, LED equipment include the director, and the director is used for controlling the data packet to flow to the LED equipment at self place, flow to adjacent other LED equipment or be abandoned. The invention provides a multi-path LED display system and a multi-path LED display method capable of dynamically increasing and decreasing the number, which can dynamically increase and decrease the number of LED devices under the condition of no shutdown.
Description
Technical Field
The invention relates to the technical field of LED display, in particular to a multi-path LED display system capable of dynamically increasing and decreasing the number and a display method.
Background
In the field of LED display technology, it is generally required to control a plurality of LED devices simultaneously for displaying, which is referred to as a multi-LED display. Generally, after a display system is deployed, all LED devices and control programs are set, and cannot be flexibly adjusted, especially, the number of the LED devices cannot be increased or decreased at will, and if the number of the LED devices needs to be adjusted, the display system must be stopped, which causes display interruption.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a multi-path LED display system and a multi-path LED display method capable of dynamically increasing and decreasing the number, wherein the number of LED devices can be dynamically increased and decreased under the condition of no shutdown.
In order to achieve the purpose, the invention adopts the specific scheme that: the utility model provides a multichannel LED display system that can dynamic increase and decrease quantity, includes control host computer and a plurality of LED equipment of electric connection in proper order, and wherein first LED equipment and control host computer electric connection, LED equipment include the director, and the director is used for controlling the data packet to flow to the LED equipment at self place, flow to adjacent other LED equipment or be abandoned.
A display method of a multi-path LED display system capable of dynamically increasing and decreasing the number comprises the following steps:
s1, initializing the display system;
s2, the control host sends a light control message to the first LED device, wherein the light control message comprises at least one light control data packet;
s3, the first LED equipment receives the light control data packet or forwards the light control data packet to the second LED equipment, and the like;
s4, after the sending of the light control message is finished, the control host sends a frame synchronization data packet to the first LED equipment;
s5, the first LED device forwards the frame synchronization data packet to the second LED device, and so on;
and S6, all the LED devices receive the frame synchronization data packet and then synchronously display the frame synchronization data packet.
As a preferable embodiment, the specific method of S1 includes:
s1.1, the control host acquires equipment information of the LED equipment by sending a request information data packet to the LED equipment;
s1.2, the control host sets the equipment ID for the LED equipment by sending an equipment address setting data packet to the LED equipment.
As a preferred scheme, the specific method of S1.1 is:
s1.11, the LED equipment sends an equipment information data packet to the previous LED equipment after receiving the solicited information data packet, and sends the solicited information data packet to the next LED equipment, wherein the first LED equipment sends the equipment information data packet to the control host;
s1.12, after the control host receives an equipment information data packet, the control host sends a reminding forwarding message to the LED equipment to enable the LED equipment to forward the received equipment information data packet to the previous LED equipment.
As a preferred scheme, the specific method of S1.2 is:
s1.21, the control host sends an equipment address setting data packet to the LED equipment for the first time;
s1.22, after the LED equipment receives the equipment address setting data packet for the first time, clearing the equipment ID of the LED equipment, and forwarding the equipment address setting data packet to the next LED equipment;
s1.23, the control host sends an equipment address setting data packet to the LED equipment again;
s1.24, after receiving the equipment address setting data packet again, the LED equipment resets the equipment ID of the LED equipment according to the equipment address setting data packet, and the LED equipment which has set the equipment ID forwards the equipment address setting data packet to the next LED equipment.
As a preferred solution, the method further comprises the steps of:
and S7, the control host sends a light brightness data packet to the LED equipment, and the LED equipment changes the light brightness according to the received light brightness data packet.
As a preferred solution, the method further comprises the steps of:
and S8, the control host sends a claim device information data packet to the LED device, and the LED device returns a device information data packet and/or a device sensor data packet to the control host according to the received claim device information data packet.
As a preferred solution, the method further comprises the steps of:
and S9, the control host periodically acquires the device information of the LED device by sending a request information data packet to the LED device.
As a preferred solution, the method further comprises the steps of:
and S10, sending an equipment alarm data packet to the control host when the LED equipment fails.
Has the advantages that: according to the multi-path LED display system, the guider is arranged in the LED equipment to realize the forwarding of the data packet between the LED equipment, so that all the other equipment except the first LED equipment cannot be directly connected with the control host, and the increase and decrease of the quantity of the LED equipment can be found by utilizing the forwarding process of the data packet between the LED equipment under the condition of not shutting down the control host, so that the dynamic increase and decrease of the quantity of the LED equipment are realized.
Drawings
FIG. 1 is a schematic view showing the overall structure of a display system;
FIG. 2 is a schematic view of a guide;
FIG. 3 is a schematic diagram of the composition of a light control packet;
FIG. 4 is a schematic diagram of a frame synchronization packet composition;
FIG. 5 is a schematic diagram of the composition of a light intensity packet;
fig. 6 is a schematic diagram showing the composition of a device address setting packet;
FIG. 7 is a schematic diagram of the composition of a solicited message packet;
FIG. 8 is a schematic diagram of the composition of a device information packet;
FIG. 9 is a schematic diagram of the composition of a device sensor data packet;
FIG. 10 is a schematic diagram of the composition of a device alarm packet;
fig. 11 is a schematic diagram of the composition of the device ID.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 11, a multi-channel LED display system capable of dynamically increasing or decreasing the number of LED devices includes a control host and a plurality of LED devices electrically connected in sequence, wherein a first LED device is electrically connected to the control host, and the LED device includes a director for controlling a data packet to flow to the LED device where the data packet is located, to flow to other adjacent LED devices, or to be discarded.
According to the multi-path LED display system, the guider is arranged in the LED equipment to realize the forwarding of the data packet between the LED equipment, so that all the other equipment except the first LED equipment cannot be directly connected with the control host, and the increase and decrease of the quantity of the LED equipment can be found by utilizing the forwarding process of the data packet between the LED equipment under the condition of not shutting down the control host, so that the dynamic increase and decrease of the quantity of the LED equipment are realized.
Based on the above system, the present invention further provides a display method of a multi-channel LED display system capable of dynamically increasing or decreasing the number, which includes S1 to S6.
And S1, initializing the display system. The initialization procedure is used to let the control host discover all available LED devices and configure all LED devices.
And S2, the control host sends a light control message to the first LED device, wherein the light control message comprises at least one light control data packet. In practical application, the control host does not need to control all the LED devices every time, and only a part of the LED devices may be controlled in one control process, so that the light control message includes at least one light control data packet, and the LED devices to be controlled are called target devices, and the data packet is sent to the target devices, and the rest of the LED devices are not controlled by the data packet.
And S3, the first LED device receives the light control data packet or forwards the light control data packet to the second LED device, and so on. If the first LED equipment is the target equipment of the light control data packet, the first LED equipment directly receives the light control data packet, the sending process is stopped, if the first LED equipment is not the target equipment of the light control data packet, the light control data packet is sent to the second LED equipment, and through the process, the light control data packet can be sent to the target equipment.
And S4, after the light control message is sent, the control host sends a frame synchronization data packet to the first LED device.
S5, the first LED device forwards the frame synchronization packet to the second LED device, and so on.
And S6, all the LED devices receive the frame synchronization data packet and then synchronously display the frame synchronization data packet. Because the LED equipment can not directly display according to the light control data packet after receiving the light control data packet, otherwise, the display picture is torn, and therefore after the light control message is sent, all the LED equipment is controlled to synchronously display through the frame synchronization data packet, and the display picture is continuous and natural.
Further, specific methods of S1 include S1.1 to S1.2.
S1.1, the control host acquires the equipment information of the LED equipment by sending a request information data packet to the LED equipment. Since the number and information of LED devices directly determines the packet generation process of the controlling host, all available LED devices need to be discovered first.
S1.2, the control host sets the equipment ID for the LED equipment by sending an equipment address setting data packet to the LED equipment. Because the light control data packet needs to directly control the LED devices and also needs to be directly transmitted to the target device, a device ID needs to be set for each LED device, and whether the LED device is the target device is determined by the device ID.
Further, specific methods of S1.1 are S1.11 to S1.12.
S1.11, the LED equipment sends an equipment information data packet to the previous LED equipment after receiving the solicited information data packet, and sends the solicited information data packet to the next LED equipment, wherein the first LED equipment sends the equipment information data packet to the control host.
S1.12, after receiving an equipment information data packet, the control host sends a reminding forwarding message to the LED equipment so that the LED equipment forwards the received equipment information data packet to the previous LED equipment.
The purpose of the solicited information data packet is to discover all the LED devices, and the solicited information data packet is sent before the device ID is set, so the solicited information data packet does not have a destination device, and is forwarded among all the LED devices, and each LED device receives the solicited information data packet, so that all the LED devices can return the device information data packet to the control host according to the solicited information data packet.
And because all the data packet sending processes are realized by depending on the forwarding of the LED equipment, in order to improve the efficiency and avoid delay caused by centralized sending of the data packets, the control host needs to send a reminding forwarding message to control the forwarding process of the equipment information data packet, and the first LED equipment is directly connected with the control host, so that the equipment information data packet sent by the first LED equipment can be directly sent to the control host, and the process of sending the reminding forwarding message by the control host is triggered. The prompting forwarding message has the same property with the solicited information data packet, and no clear target device exists, so that the LED devices can receive and forward the prompting forwarding message, and all the LED devices can smoothly complete the forwarding process. With this mechanism, the process of sending LED devices by the control host is gradual, and LED devices from the first to the last are gradually discovered, thereby avoiding confusion or omission.
Further, specific methods of S1.2 are S1.21 to S1.24.
S1.21, the control host sends an equipment address setting data packet to the LED equipment for the first time.
S1.22, the LED equipment clears the equipment ID of the LED equipment after receiving the equipment address setting data packet for the first time, and forwards the equipment address setting data packet to the next LED equipment.
S1.21 to S1.22 serve to empty the LED devices of their device IDs so that the system can be reset and operated again if necessary to avoid errors.
And S1.23, the control host sends the equipment address setting data packet to the LED equipment again.
S1.24, after receiving the equipment address setting data packet again, the LED equipment resets the equipment ID of the LED equipment according to the equipment address setting data packet, and the LED equipment which has set the equipment ID forwards the equipment address setting data packet to the next LED equipment.
S1.23 to S1.24 are used to reset the device ID of each LED device to ensure that the data packet is subsequently transmitted accurately to the target device at the time of transmission.
Further, the method further includes S7.
And S7, the control host sends the light brightness data packet to the LED equipment, and the LED equipment changes the light brightness according to the received light brightness data packet. Since the device ID is already set, the light intensity packet can identify the target device by the device ID.
Further, the method further includes S8.
And S8, the control host sends a request device information data packet to the LED device, and the LED device returns a device information data packet and/or a device sensor data packet to the control host according to the received request device information data packet. The device information data packet is used for transmitting information such as port number, port brightness percentage setting or port baud rate of the LED device, and the device sensor data packet is used for transmitting information of a sensor of the LED device. S8 is for the control host to grasp the operation state of each LED device, and is not necessary in actual use and is executed only when necessary.
Further, the method further includes S9.
And S9, the control host periodically acquires the device information of the LED device by sending a request information data packet to the LED device. The specific process of S9 is the same as S1.1, and through S9, the control host can actively acquire device information of all currently available LED devices, and when the number of LED devices increases or decreases, the control host can find the LED devices without stopping the device, thereby ensuring that the operating LED devices do not need to stop and ensuring normal display of the screen. It should be noted that if the control host finds the newly added LED device through S9, the device ID may be set for the newly added LED device using S1.23 to S1.24.
Further, the method further includes S10.
And S10, sending an equipment alarm data packet to the control host when the LED equipment fails.
The format of all packets is as follows.
The light control packet includes a 9-byte protocol name field, a 2-byte version number field, a 1-byte reserved field, a 1-byte network field, a 2-byte device field, a 1-byte port field, a 1-byte message type field, a 1-byte data length field, an nbyte data field, and a 2-byte check field. Where n is the assignment of the data length field; the protocol name field, the version number field, the reserved field, the network field, the equipment field, the port field and the check field are all universal for all data packets, and repeated description is not repeated in the following; the protocol name field is used for representing a currently executed light control protocol, the version number field is used for representing a version number of the light control protocol, the reserved field is used when a new function needs to be added subsequently, the network field is used for representing currently used network information, the equipment field is used for representing basic information of the LED equipment, such as models and the like, and the port field is used for representing connection ports adopted between the control host and the LED equipment and between the LED equipment.
The frame synchronization packet includes a 1-byte message type field, and two 1-byte reserved fields.
The light brightness data packet includes a 1-byte message type field, a 1-byte R-channel brightness field, a 1-byte G-channel brightness field, a 1-byte B-channel brightness field, and a 1-byte W-channel brightness field.
The device address setting packet includes a message type field of 1byte, a new network ID field of 1byte, a new device ID field of 1byte, and a reserved field of 1 byte.
The solicitation information data packet comprises a message type field of 1byte, a solicitation information type field of mbyte and reserved fields of two 1 bytes. The size of m is variable and is determined according to the type of the requested information.
The device information data packet comprises a 1byte message type field, a 1byte device type field, a 1byte port channel number field, a 2byte hardware manufacturer number field, a 1byte hardware version number field, a 2byte software manufacturer number field, a 1byte software version number field, q channel brightness units, q baud rate fields, and two 1byte reserved fields. One of the channel luminance units includes a 1-byte R-channel luminance unit, a 1-byte G-channel luminance unit, a 1-byte B-channel luminance unit, and a 1-byte W-channel luminance unit.
The device sensor information packet includes a 1byte message type field, a 1byte sensor number field, a pbbyte sensor type field, a 4 pbbyte sensor data field, and two 1byte reserved fields. Wherein the value of p is set by the number of sensors field, the 1byte sensor type field and the 4byte sensor data field form a unit, which together form p units.
The device alarm packet includes a 1-byte message type field, a 4-byte alarm reason field, and two 1-byte reserved fields.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A multi-path LED display method capable of dynamically increasing and decreasing the number is characterized in that: based on a multichannel LED display system that can increase and decrease quantity dynamically, display system includes main control system and a plurality of LED equipment of electric connection in proper order, and wherein first LED equipment and main control system electric connection, LED equipment include the director, and the director is used for controlling the data packet to flow to the LED equipment that self belongs to, flow to adjacent other LED equipment or be abandoned, the method includes the following step:
s1, initializing the display system;
s1.1, the control host acquires equipment information of the LED equipment by sending a request information data packet to the LED equipment;
s1.11, the LED equipment sends an equipment information data packet to the previous LED equipment after receiving the solicited information data packet, and sends the solicited information data packet to the next LED equipment, wherein the first LED equipment sends the equipment information data packet to the control host;
s1.12, after receiving an equipment information data packet, the control host sends a reminding forwarding message to the LED equipment so that the LED equipment forwards the received equipment information data packet to the previous LED equipment;
s1.2, the control host sets an equipment ID for the LED equipment by sending an equipment address setting data packet to the LED equipment;
s2, the control host sends a light control message to the first LED device, wherein the light control message comprises at least one light control data packet;
s3, the first LED equipment receives the light control data packet or forwards the light control data packet to the second LED equipment, and the like;
s4, after the sending of the light control message is finished, the control host sends a frame synchronization data packet to the first LED equipment;
s5, the first LED device forwards the frame synchronization data packet to the second LED device, and so on;
s6, all the LED devices receive the frame synchronization data packet and then synchronously display the frame synchronization data packet;
the method further comprises the step that the control host periodically acquires the equipment information of the LED equipment by sending a solicited information data packet to the LED equipment.
2. The method of claim 1, wherein: the specific method of S1.2 is as follows:
s1.21, the control host sends an equipment address setting data packet to the LED equipment for the first time;
s1.22, after the LED equipment receives the equipment address setting data packet for the first time, clearing the equipment ID of the LED equipment, and forwarding the equipment address setting data packet to the next LED equipment;
s1.23, the control host sends an equipment address setting data packet to the LED equipment again;
s1.24, after receiving the equipment address setting data packet again, the LED equipment resets the equipment ID of the LED equipment according to the equipment address setting data packet, and the LED equipment which has set the equipment ID forwards the equipment address setting data packet to the next LED equipment.
3. The method of claim 1, wherein: the method further comprises the steps of:
and S7, the control host sends a light brightness data packet to the LED equipment, and the LED equipment changes the light brightness according to the received light brightness data packet.
4. The method of claim 3, wherein: the method further comprises the steps of:
and S8, the control host sends a claim device information data packet to the LED device, and the LED device returns a device information data packet and/or a device sensor data packet to the control host according to the received claim device information data packet.
5. The method of claim 4, wherein: the method further comprises the steps of:
and S10, sending an equipment alarm data packet to the control host when the LED equipment fails.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910864283.7A CN110556073B (en) | 2019-09-12 | 2019-09-12 | Multi-path LED display system capable of dynamically increasing and decreasing number and control method |
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| CN201910864283.7A CN110556073B (en) | 2019-09-12 | 2019-09-12 | Multi-path LED display system capable of dynamically increasing and decreasing number and control method |
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| GB0812770D0 (en) * | 2008-07-11 | 2008-08-20 | Zbd Displays Ltd | A display system |
| CN101699923B (en) * | 2009-11-11 | 2013-05-01 | 广州中大中鸣科技有限公司 | Lighting control system based on DMX512 protocol and method thereof |
| CN102281664B (en) * | 2010-06-13 | 2014-05-07 | 上海广茂达光艺科技股份有限公司 | Method for realizing light fitting control by using interactive light control bus |
| US10593256B2 (en) * | 2018-03-22 | 2020-03-17 | Sct Ltd. | LED display device and method for operating the same |
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