CN114786217B - Double-path communication method and system for controlling lamplight - Google Patents
Double-path communication method and system for controlling lamplight Download PDFInfo
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- CN114786217B CN114786217B CN202210705070.1A CN202210705070A CN114786217B CN 114786217 B CN114786217 B CN 114786217B CN 202210705070 A CN202210705070 A CN 202210705070A CN 114786217 B CN114786217 B CN 114786217B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/19—Controlling the light source by remote control via wireless transmission
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/19—Controlling the light source by remote control via wireless transmission
- H05B47/195—Controlling the light source by remote control via wireless transmission the transmission using visible or infrared light
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Abstract
The invention relates to the field of field light control, and discloses a double-path communication method and a double-path communication system for controlling light, wherein a light control console is connected with a host, and a lamp is connected with slave machines, and the double-path communication method is characterized in that the host is communicated with a plurality of slave machines, and comprises the following steps: s1: the host splits a data packet to be sent into light control information and lamp configuration information, and transmits the light control information and the lamp configuration information to the slave through two channels; s2: receiving light control information and lamp configuration information from the slave machine; s3: the slave computer configures the lamps connected with the slave computer through the lamp configuration information, and controls the lamps to work through the light control information. This scheme is used for solving current wireless light control and can not satisfy communication quality and the problem of connection quantity simultaneously.
Description
Technical Field
The invention relates to the field of field light control, in particular to a double-path communication method and a double-path communication system for controlling light.
Background
In field lighting control, the DMX512 protocol is usually used, which is a master-slave based protocol that supports one-to-many lighting control systems. Generally, simple light control does not require a lamp to respond, and a console is used as a master to communicate with a plurality of slaves in a one-to-many manner, so that a plurality of lamps are controlled simultaneously; however, in application scenes such as large stage performance sites, special movie and television sites and the like, simple lighting control cannot meet the control requirements of lighting operators, and at this time, a lamp can be in two-way interaction with a console to complete more complicated lighting control, but because the DMX512 protocol can only be transmitted in one way, two-way information interaction cannot be realized between the console and the lamp, the lamp can only passively receive control information of the console, and configuration information of the lamp cannot be fed back to the console, in the stage lighting control in the prior art, two-way interaction between the console and the lamp is realized through an extended protocol RDM protocol of the DMX512 protocol, configuration communication of lighting is completed, and configuration information of the lamp is obtained. Meanwhile, because interfaces of the control console are limited, the number of the control console connected with the slave machines is limited by traditional wired connection digital communication, and the requirement of large-scale field performance on the connection number of the lamps cannot be met.
In order to solve the problems, a common hierarchical structure establishes a multi-layer transmission connection structure between a master machine and a slave machine so as to break through the limitation of the prior art on the connection quantity of the slave machines, but in such an operation, a large amount of cost is required to construct a complex master-slave machine connection relation network, and the later maintenance and overhaul cost is high, so that the method is not suitable for large-scale popularization.
In addition, if light control is required to be performed in a large stage site, wireless communication transmission is often used for convenience, the master machine and the slave machine are required to be capable of two-way communication, in order to avoid confusion of data transmission of the master machine and the slave machine due to a complex master-slave machine system network, a step of simulating a hand raising mechanism is required to be added in the wireless transmission process for asynchronous communication, and the situation that data content cannot be identified due to the confusion of transmitted data is avoided. However, the asynchronous communication mode causes high delay of light control, and has great influence on the real-time performance of light control in a large stage scene.
In summary, there is a need for a communication system and method that can greatly simplify a complex layered connection structure between a master and a slave, enable bidirectional interaction between the master and the slave without limiting the number of communication nodes, and do not affect the low latency of on-site light control.
Disclosure of Invention
The invention aims to provide a double-path communication method for controlling light, and the scheme is used for solving the problem that the low time delay of on-site wireless instant messaging controlled by wireless light and configuration information of a lamp set synchronously coexist.
The basic scheme provided by the invention is as follows: a dual-path communication method for controlling light is characterized in that a light console is connected with a host, a lamp is connected with a slave, and the host is communicated with a plurality of slaves, and comprises the following steps:
s1: the host splits a data packet to be sent into light control information and lamp configuration information, and respectively transmits the light control information and the lamp configuration information to the slave through two channels;
s2: receiving light control information and lamp configuration information from a slave computer;
s3: the slave computer configures the lamps connected with the slave computer through the lamp configuration information, and controls the lamps to work through the light control information.
The working principle and the advantages of the invention are as follows:
the invention relates to a double-path communication method for controlling light.A host computer is communicated with a plurality of slave computers, data is firstly split into light control information and lamp configuration information before communication, the light control information and the lamp configuration information are respectively transmitted through proper channels by fully utilizing the difference of communication transmission requirements of two kinds of information, the lamp configuration information can be obtained and modified on the premise of getting rid of the limitation of the connection number of the slave computers, the transmission is mutually non-interfering and can be synchronously transmitted, the light control delay is lower, the stability is better, and the light control requirements of bidirectional communication and low delay in various scene sites can be met.
The invention abandons the traditional lamplight control information transmission network which is set based on the layered complex structure of a master machine and a slave machine, reasonably selects an adaptive channel to carry out separate transmission by splitting the lamplight control information and the lamp configuration information according to different transmission requirements of different information, overcomes the compatibility requirement of two information transmissions on the channel, and can bypass the complex layered structure network to carry out communication.
Further, the master communicates with the slaves in a broadcast manner. The scheme can realize one-to-many light control, and has no limitation on the number of communication nodes in a large stage scene, so that the efficiency of simple light control is higher.
Further, the light control information includes a channel number and light brightness of the lamp. This scheme can realize the control to light through changing passageway serial number and light luminance, realizes the basic control to different colours through the passageway that changes lamps and lanterns, then realizes the combination control of different colours through controlling luminance.
Further, the lamp configuration information includes device location, address, channel number, and configuration command; when the light control console is used as a receiving end, receiving the position, the address and the channel number of equipment; and when the light control console serves as a sending end, sending a configuration command. The light control console can know the number of connected lamps through the lamp configuration information, distinguish the lamps connected with the light control console, and is more convenient to control. Compare in prior art adoption asynchronous communication transmission, this scheme host computer can carry out on-the-spot light communication control through the broadcast mode simultaneously to and carry out lamps and lanterns information acquisition and configuration through the negotiation of shaking hands, do not influence the real-time and the coherence of light communication control.
Further, in S1, both channels use a wireless communication method. The scheme is more favorable for on-site wiring setting.
Further, the wireless communication mode is radio frequency communication and comprises Bluetooth, WIFI, 4G/5G, ZIGBEE and LORA. Compared with the infrared communication, the radio frequency communication has no directivity, is more flexible, has penetrating capability and is not easily interfered by a shielding object.
Further, the wireless communication means is optical communication, including infrared. Compared to radio frequency transmitting and receiving devices, infrared devices have lower cost transmitters and receivers and are less susceptible to electromagnetic waves.
Further, in S1, the data packet to be sent is acquired through the RDM protocol. The DMX512 protocol uses RS485 communication level hardware, the RDM protocol is an RDM protocol upgraded on the same hardware platform, and return information is inserted in a data communication hardware link through a break hand-lifting mechanism to solve the problem of data return.
Further, in S1, the data packet to be transmitted is acquired by the Art Net protocol. The Art Net protocol is an application layer protocol of a light control data frame of a component grafted on a communication protocol of a UDP (user datagram protocol) by adopting Ethernet hardware as a hardware platform, and can achieve the purpose of modernization and upgrading of a system by using more common network wiring.
A dual-path communication system for controlling lamplight applies the dual-path communication method for controlling lamplight. The scheme can solve the problem that two functions of limiting the number of connected lamps and distinguishing the lamps are incompatible, and on the basis of getting rid of the limitation of the number of connected lamps, the lamp configuration information is obtained through wireless connection, so that the number of connected slave machines is obtained and the lamps are distinguished; and the time delay of this scheme control light is lower, and the response is faster, and control is more smooth.
Drawings
Fig. 1 is a flowchart of a dual-path communication method for controlling lights according to a first embodiment of the present invention.
Detailed Description
The following is further detailed by the specific embodiments:
the first embodiment is as follows:
the embodiment is basically as shown in fig. 1, and a dual-path communication method for controlling lights, wherein a light console is connected with a master machine, a lamp is connected with slave machines, the master machine is communicated with a plurality of slave machines in a broadcasting mode, specifically in a wireless broadcasting mode, and the method comprises the following steps:
s1: the host splits a data packet to be sent into light control information and lamp configuration information, and transmits the light control information and the lamp configuration information to the slave through two channels;
s2: receiving light control information and lamp configuration information from a slave computer;
s3: the slave computer configures the lamps connected with the slave computer through the lamp configuration information, and controls the lamps to work through the light control information.
The host uses two different channels to transmit two types of data frames to the outside respectively. When the host sends a data frame of a command operation word, the data frame is transmitted to the slave through one of the channels in a one-way broadcast mode, so that the slave in the space domain can receive the instant transmission indiscriminately and respond to the operation data with low delay. When the host sends and receives the data frame of the configuration information, the master-slave operation modes such as broadcast inquiry, hand raising response, address corresponding sub machine inquiry and the like are realized to inquire, modify and otherwise operate the configuration information of the slave machines in the communication mode that one host corresponds to a plurality of slave machines.
The slave responds to the two types of data frames of the master respectively using two different channels. When the slave receives the operation command data frame broadcasted by the master through the broadcast signal, the slave responds to the signaling of the broadcast data frame of the master in real time according to the configuration of the slave. When the slave responds to the configuration data frame transmitted by the configuration channel, the slave completes the query, modification and other operations of the slave configuration information according to the command of the master through a master-slave communication mode.
The embodiment adopts the RDM protocol as the light control protocol, the light control information comprises the channel number and the light brightness of the lamp, the light control console sends the light control information in a wireless broadcast mode, the lamp changes the light brightness corresponding to the channel number according to the received light control information after receiving the light control information, the control of the light is realized, the basic control of different colors is realized by changing the channel of the lamp, and then the combined control of different colors is realized by controlling the brightness. For example: the three-color lamp comprises three channels, wherein the first channel controls a red lamp, the second channel controls a yellow lamp, the third channel controls a blue lamp, the brightness adjustment ranges are all 0-255 and correspond to the brightness range of 0% -100%, and when the three-color lamp receives a signal sent by a light console, if the channel number is 1 and the brightness value is 153, the brightness of the red lamp is actually controlled to be 60%; the channel number is 2, and the brightness is 204, the brightness of the yellow lamp is adjusted to 80%; by analogy, the mixed color mixing of the light is realized by the combined control of the brightness of the lamps with different colors, so that the light with various colors is presented.
The luminaire configuration information includes device location, address, number of channels, and configuration commands. The configuration command is sent when the light control console serves as a sending end, and after the lamp receives the configuration command sent by the light control console through wireless broadcast, the information such as the equipment position, the address, the channel number and the current brightness value of the lamp can be sent to the light control console; the device position refers to the installation position of light, the address refers to a unique corresponding identifier of each device, the channel number represents the number of controllable light groups, and the channel number and the current brightness value reflect the current state of each light group. According to the above information, the light control console can obtain the number of connected lamps and distinguish which lamps are specifically connected with the light control console, so that the lamp configuration information can be modified in a targeted manner, and the slave computer responds to the configuration command or reports the configuration information through the lamp configuration information, that is, all the lamps connected with the slave computer can be configured, or any one of the lamps connected with the slave computer can be configured independently, for example: when the slave is connected with 1000 desk lamps, the slave can be configured with all the connected lamps or one desk lamp; if the configuration information such as the equipment position, the address, the channel number and the like of the lamp needs to be acquired, the host sends a configuration command to the slave to request the slave to report the contents, and the slave loads the configuration command and reports the corresponding contents to the host according to the requirement of the configuration command; if configuration information such as addresses, power factors, control modes and the like needs to be modified, the host sends a configuration command to the slave machine according to specific modification requirements, and then the slave machine loads the configuration command and modifies the corresponding lamp according to the requirements of the configuration command.
The wireless communication mode that two channels adopted in this embodiment is radio frequency communication, specifically includes any two kinds in bluetooth, WIFI, 4G/5G, ZIGBEE and the LORA. Compared with the infrared communication, the radio frequency communication has no directivity, is more flexible, has penetration capacity, is not easily interfered by a shielding object, and has higher data transmission speed.
A dual-path communication system for controlling lamplight is provided, the dual-path communication method for controlling lamplight is applied, the problem that two functions of limiting the connection quantity of lamps and distinguishing the lamps are incompatible can be solved, and on the basis that the limitation of the connection quantity of the lamps and lanterns can be eliminated, the configuration information of the lamps and lanterns is obtained through wireless connection, so that the quantity of connected slave machines is obtained, and the lamps and lanterns are distinguished; and the time delay of this scheme control light is lower, and the response is faster, and control is more smooth.
Generally speaking, in order to avoid confusion of data transmission between a master machine and a slave machine due to a complex master-slave machine system network, a step of simulating a hand raising mechanism needs to be added in a wireless transmission process, meanwhile, one-way DMX/two-way RDM is adopted to carry out asynchronous communication, the realization of the one-way/two-way communication needs to be switched between two protocol modes, light control information is transmitted through the DMX, light change is controlled, and lamp configuration information is transmitted or modified through the RDM protocol, but the method increases the time delay of light control, greatly influences the real-time performance of the light control, and is not suitable for application environments with large scenes, multiple lamps and complex light control, such as large stage performance sites or movie shooting. When the light scene is applied in a large scale, the host and the slave are required to be capable of two-way communication in order to conveniently use wireless communication transmission for wiring and operation, and as the wireless communication using the RDM protocol does not send break information like wired connection, a large number of judgment or selection steps are required to be added in the wireless transmission process to avoid data confusion and incapability of identification, such as arbitration mechanism, but the amount of sent data is increased, the number of steps is increased, the transmission delay is still high, and the real-time control of the light scene applied in a large scale is not facilitated. According to the scheme, data are split into two data packets of light control information and lamp configuration information before communication, the data can be split when the data are acquired, then the data are transmitted through two channels respectively, the light control information is transmitted in a broadcasting mode, the number of communication nodes is not limited, the lamp configuration information is transmitted through an RDM protocol, bidirectional interaction between a host and a slave is achieved, the amount of transmitted data is less, and energy consumption is lower; meanwhile, as the two channels are transmitted respectively, the interference between the two channels during transmission is avoided, and the data confusion is avoided, so that the synchronous communication can be realized, and the time delay is lower when the light set is applied on a large scale.
The scheme looks similar to the dual-mode communication of the mobile phone, but is actually completely different. The dual-mode communication of the mobile phone is two independent operation modes, although the mobile phone can simultaneously support two network communication technologies of GSM and CDMA, the selection is actually made according to the environment or the actual operation requirement, which network technology can play a role, the mobile phone is switched to which mode to work, and only one mode exists at the same time. According to the scheme, two channels work simultaneously, and because the light control information and the lamp configuration information are two kinds of highly-associated data, the compatibility between the data is good, the data can be split and then transmitted in different modes, and then the data can be identified.
It is emphasized that this solution has sufficient advantages over the prior art. In the existing light control, a DMX512 protocol is commonly used, the control is performed according to the DMX512 protocol, and the control mode is basically determined according to the limitation of the existing transceiver. Existing DMX512 transceivers typically employ two control methods: firstly, a master machine sends a control command word by broadcasting, a slave machine responds to the corresponding control command word according to configured configuration such as address codes and the like, and the slave machine cannot return data and cannot read or modify configuration information such as slave machine addresses and the like because the slave machine only transmits data in a single direction; secondly, the master and the slaves use a binding pairing mode to communicate through a single channel, and the control command words and the configuration command words form an interactive data frame. The two modes can adapt to a plurality of previous use scenes although the two modes are used for a long time in the field of light control. However, with the development of many new scenes, such as large stage art lighting, arrangement of light response under the stage of a concert, and some special movie and television lighting requirements, the two control methods commonly used at present cannot meet the requirements of people. However, due to the limitations of communication methods and devices, the control communication method based on the DMX512 protocol used at present can not basically depart from the above two existing control methods, and the number of slaves and the bidirectional data transmission cannot be broken through.
The scheme abandons the traditional light control information transmission network based on the master-slave machine layered complex structure, reasonably selects the adaptive channel to carry out separate transmission by splitting the light control information and the lamp configuration information according to different transmission requirements of different information, overcomes the compatibility requirement of two information transmissions on the channel, and can bypass the complex layered structure network to carry out communication, and the number of slave machines connected with the master machine is not limited. For example: the light control engineer finds that the address configuration of 3 lamps on the 10 m high top does not correspond, and when the grouping of the 3 lamps is different, there is no way to operate according to a preset mode, or modify all lamps on the ground (if there are 100 lamps, it is very troublesome), or just need to open the shadow shed top, and let the worker take the aerial ladder to modify the 3 lamps which do not correspond to the configuration of the 10 m high top, and it takes 1 day to spend, and the advantage of the scheme under this scene is that: compared with the second type of the traditional method, the capacity of the scheme is larger, all lamps in a studio can use the networking, 32 lamps do not need to be networked into one group, even if the studio needs 1000 lamps to meet the complete light control requirement, the same networking can be used, and in addition, when signal transmission is configured, the time slice (the operation allowed time) of the control signal is not occupied, and the transmission response time of the control signal is not influenced. Compared with the first method of the traditional method, the operation of opening the ceiling to receive the lamp is not needed, the lamp configuration can be remotely carried out, 30% -50% of arrangement and operation time is saved compared with a general scheme, and the transmission accuracy is improved by 5% -10%.
Example two:
the second embodiment is different from the first embodiment only in that the Art net protocol is adopted in the present scheme. Compared with the RDM protocol, the Art net protocol is based on UDP, is relatively simpler to use, can be directly transmitted without handshaking, has higher response speed and lower time delay of light control, and is more suitable for light control on stage sites.
Example three:
the third embodiment is different from the second embodiment only in that one of two channels in S1 employs radio frequency communication, and the other employs optical communication. In this embodiment, two channels adopt LORA and infrared ray to transmit respectively, and LORA is used for carrying out the broadcast transmission light control information, and the infrared ray is used for transmitting light configuration information.
Radio frequency communication does not have the directionality, compares and is more suitable for transmitting with the mode of broadcasting in the infrared ray, consequently is used for transmitting light control information and is difficult to blockked by the shelter from the thing, and at large-scale performance scene, LORA's transmission's scope is far away than bluetooth and WIFI, and the signal is stronger, and does not receive the influence of a large amount of crowd's cell-phones to the 4G 5G basic station, and the stability of transmission is strong, and data is difficult for losing easily, and control effect is better. The transmission speed of the infrared ray is relatively slow, but the requirement of the lamp configuration information on the transmission speed is relatively low, the infrared ray can sufficiently meet the requirement, and the cost is low; meanwhile, the point-to-point transmission mode of infrared rays has certain identity recognition capability, so that the content of the transmitted lamp configuration information can be adjusted, such as deleting lamplight position information and the like, so that the transmitted data volume is reduced, the transmission speed is improved to a certain extent, and the energy consumption is reduced.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A dual-path communication method for controlling light, a light console is connected with a host, a lamp is connected with a slave, the dual-path communication method is characterized in that the host is communicated with a plurality of slaves, and the dual-path communication method comprises the following steps:
s1: the host splits a data packet to be sent into light control information and lamp configuration information, and transmits the light control information and the lamp configuration information to the slave through two channels;
s2: receiving light control information and lamp configuration information from a slave computer;
s3: the slave computer configures the lamps connected with the slave computer through the lamp configuration information, and controls the lamps to work through the light control information;
the host uses two different channels to respectively transmit two types of data frames outwards; when the host sends an operation command data frame, the operation command data frame is transmitted to the slave through one of the channels in a one-way broadcast mode, so that the slave in the spatial domain receives the transmission indiscriminately; when the host sends and receives the configuration data frame, the master-slave operation mode of broadcast inquiry, hand-raising response and sub-machine inquiry corresponding to the address is realized to inquire, modify and otherwise operate the configuration information of the slave machines through the communication mode that one host corresponds to a plurality of slave machines; the slave uses two different channels to respectively respond to two types of data frames of the master; when the slave receives the operation command data frame broadcasted by the host through the broadcast signal, the slave responds to the signaling of the broadcast data frame of the host immediately according to the configuration of the slave; when the slave responds to the configuration data frame transmitted by the configuration channel, the slave completes the query, modification and other operations of the slave configuration information according to the command of the host through a master-slave communication mode;
the light control information comprises a channel number and light brightness of the lamp; the light is controlled by changing the channel number and the light brightness, different colors are controlled by changing the channel of the lamp, and the combination control of different colors is realized by controlling the brightness;
the lamp configuration information comprises equipment position, address, channel number and configuration command; when the host serves as a receiving end, receiving the position, the address and the channel number of the equipment; when the light console is used as a sending end, sending a configuration command; the light control console can know the number of connected lamps through the lamp configuration information and distinguish the lamps connected with the light control console.
2. A dual path communication method of controlling lights according to claim 1, wherein the master communicates with the slave by broadcasting.
3. A dual path communication method for controlling lights according to claim 1, wherein in S1, both channels use wireless communication.
4. The dual-path communication method for controlling lights according to claim 3, wherein the wireless communication mode is radio frequency communication including Bluetooth, WIFI, 4G/5G, ZIGBEE and LORA.
5. A dual path communication method for controlling lights according to claim 3, wherein the wireless communication means is optical communication including infrared.
6. A dual path communication method for controlling lights according to claim 1, wherein in S1, the data packet to be transmitted is acquired by RDM protocol.
7. A dual path communication method for controlling lights according to claim 1, wherein in S1, the data packet to be transmitted is acquired by Art Net protocol.
8. A dual path communication system for controlling lights, wherein the dual path communication method for controlling lights according to any one of claims 1 to 7 is applied.
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