CN112911776A - Flash lamp control method and system - Google Patents
Flash lamp control method and system Download PDFInfo
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- CN112911776A CN112911776A CN202110087248.6A CN202110087248A CN112911776A CN 112911776 A CN112911776 A CN 112911776A CN 202110087248 A CN202110087248 A CN 202110087248A CN 112911776 A CN112911776 A CN 112911776A
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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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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
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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
-
- 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
- H05B47/16—Controlling the light source by timing means
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Stroboscope Apparatuses (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a flash lamp control method and system. The flash lamp control method comprises the following steps: a first radio module of the main control equipment sends a flash instruction and a flash time synchronization signal to each controlled flash equipment; a second radio module of the controlled flash lamp device receives the flash instruction and the flash time synchronization signal and synchronously flashes according to the flash synchronization time; after waiting for the flash processing time, the first radio module broadcasts a flash result request instruction; the second radio module receives the command of requesting the flash result, the controlled flash lamp device judges whether information needs to be reported or not, if the information needs to be reported, the second radio module of the controlled flash lamp device carries out carrier wave interception, and if the channel is idle, the second radio module sends the flash result; the first radio module receives the flash results returned by the second radio module, and the master control device obtains the flash results of all the controlled flash lamp devices, calculates the flash results and gives out light distribution suggestions. The invention can sense the state of the off-line flash lamp and further give out a light distribution suggestion.
Description
Technical Field
The invention belongs to the technical field of photographic equipment, relates to a flash lamp control method and a flash lamp control system, and particularly relates to a flash lamp control method and a flash lamp control system capable of giving light distribution suggestions.
Background
In the photographic industry, flashlights are commonly used to increase brightness, freeze motion, create special effects. The camera is provided with a flash lamp on the top, which is not required due to brightness, angle and the like, so that in many scenes, a photographer arranges one or more off-line flash lamps outside the camera, and controls the off-line flash lamps to flash synchronously through the flash lamps or triggers arranged on the hot shoe of the camera so as to achieve better effect. The flash or trigger mounted on the camera hot shoe is called the master device, and the off-board flash becomes the controlled flash device. The master flash lamp/trigger and the controlled flash lamp form a wireless flash system. The photographer typically sets the controlled flash to one or more groups, e.g., a/B/C, and then adjusts the flash parameters for each group on the master device, which will control the controlled flash to flash according to the set parameters when the camera shutter is pressed. Due to the high synchronization speed requirements of cameras, wireless flash systems typically have relatively high real-time synchronization requirements, e.g., 1 ms at the fastest.
At present, the main control equipment and the controlled flash lamp in the market have two communication modes, namely optical signal transmission and radio transmission. The instability of optical signal transmission caused by the susceptibility to obstacles or external light interference is gradually eliminated, and radio transmission is the mainstream. The plurality of controlled flashes can be divided into one or more groups, and the master flash controls the flash parameters of the controlled flashes through the groups. For example, referring to fig. 1, 4 controlled flashes are set as a/B/C group, i.e., there are 2 controlled flashes in group a and one controlled flash in each of group B and group C.
Most main control equipment in the market at present adopts a one-way broadcast communication mode, and the main control equipment does not actually know that a plurality of controlled off-board flash lamps exist or the working states of the controlled off-board flash lamps. A small portion of the flash control system, which uses two-way communication, only provides the photographer with information as to whether each group of flashes has been returned.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide a flash control method and system, which can sense an off-board flash status and then give a light distribution suggestion.
According to a first aspect of the present invention, there is provided a flash control method comprising the steps of:
s11, the first radio module of the main control device sends out a flash instruction and a flash time synchronization signal to each controlled flash device;
s12, the second radio module of the controlled flash lamp device receives the flash instruction and the flash time synchronization signal, and the controlled flash lamp device synchronously flashes according to the flash instruction and the flash time synchronization signal and according to the flash synchronization time;
s13, after the main control device waits for the flash processing time, the first radio module broadcasts a flash result request instruction to each controlled flash device;
s14, the second radio module of the controlled flash device receives the flash result request instruction, and the controlled flash device determines whether information needs to be reported, if so, the second radio module of the controlled flash device performs carrier sensing, and if the channel is idle, sends a flash result;
and S15, the first radio module receives the flash result returned by the second radio module, and the master control device obtains the flash results of all the controlled flash lamp devices, calculates the flash results and gives a light distribution suggestion.
Preferably, in the step S13, the command requesting flash result includes an address of a controlled flash device that needs to report information and an available time T1.
More preferably, in step S14, if reporting is needed, the controlled flash devices wait for time T2 and T2 in sequence to be equal to time T1 multiplied by the address sequence of the corresponding controlled flash devices, and then perform carrier sensing, if the channel is busy, wait for time T3 and T3 is equal to time T1 multiplied by the number of the controlled flash devices that need to be reported.
Further, in the step S15, after the time T4 elapses, T4 is equal to T1 multiplied by the number of the controlled flash devices that need to be reported, and the master device obtains the flash results of all the controlled flash devices.
Preferably, the lighting advice includes: adding or reducing the controlled flash devices in a certain controlled flash device group; or, one or more controlled flash devices in one group are adjusted to another group.
Preferably, the flash control method further includes, before the step S11, a step S101 of: after the master control equipment is started, the first radio module carries out carrier detection on a set channel at intervals, waits for idle if the channel is busy, and broadcasts the summary information of the current members if the channel is idle.
Preferably, the flash control method further includes, before the step S11, a step S102 of: when a controlled flash lamp device is started, the second radio module monitors a set channel, after the broadcast of the master control device is monitored, the second radio module waits for a period of time according to a set rule, the second radio module carries out carrier wave monitoring, if the channel is idle, the second radio module initiates a joining request to the master control device, the master control device distributes a network address to the controlled flash lamp device, and the controlled flash lamp device successfully joins after replying confirmation.
More preferably, the step S102 is repeated until the controlled flash devices join successfully.
According to a second aspect of the present invention, there is provided a flash control system, comprising a master control device and a plurality of controlled flash devices,
the master control device includes:
a first radio module for radio communication with each of the controlled flash light-off devices;
the first user input equipment is used for a user to input a communication channel, flash parameter setting and the like;
the first flash signal input device is used for receiving flash synchronization signals sent by the camera; and
the first processor is used for controlling the first radio module to send out a flash instruction and a flash time synchronizing signal according to a communication channel and a flash parameter set by a user and the received flash synchronizing signal; the first radio module is also used for controlling the first radio module to send a flash result request instruction after the flash is finished;
each of the controlled flash devices includes:
a second flash module for flashing;
a second radio module for receiving the flash instruction, the flash time synchronization signal and the flash result request instruction sent by the first radio module; and
the second processor is used for receiving the instruction and the signal received by the second radio module, controlling the second flash module to flash according to the flash synchronization time after receiving the flash instruction and the flash time synchronization signal, judging whether information needs to be reported or not after receiving the instruction for requesting the flash result, controlling the second radio module to carry out carrier sense if the information needs to be reported, and sending the flash result if the channel is idle;
the first radio module is also used for receiving the flash results returned by the second radio modules; the first processor is also used for receiving the flash result, calculating the flash result and giving out a light distribution suggestion.
Preferably, the main control device further includes a display screen for displaying the lighting advice, and the lighting advice includes: adding or reducing the controlled flash devices in a certain controlled flash device group; or, one or more controlled flash devices in one group are adjusted to another group.
Preferably, after waiting for the flash processing time, the first processor controls the first radio module to broadcast the flash result request instruction, where the flash result request instruction includes an address of a controlled flash device that needs to report information and an available time T1; each second radio module is configured to receive the flash request result instruction and send the flash request result instruction to the second processor, where the second processor is configured to determine whether information needs to be reported after receiving the flash request result instruction, wait for a waiting time T2 according to a sequence if the information needs to be reported, where T2 is equal to T1 multiplied by an address sequence of a corresponding controlled flash device, and then perform carrier sensing, wait for a time T3 if a channel is busy, where T3 is equal to T1 multiplied by the number of the controlled flash devices that need to be reported, and control the second radio module to send a flash result to the master control device if the channel is idle.
Preferably, the first user input device is further configured to allow a user to input a first power-on instruction, the first processing is configured to receive the first power-on instruction and, after receiving the first power-on instruction, periodically instruct the first radio module to perform carrier detection on a set channel, wait until the channel is idle if the channel is busy, and control the first radio module to broadcast the current member summary information in sequence if the channel is idle.
Preferably, each of the controlled flash devices further includes a second user input device, where the second user input device is configured to allow a user to input a second power-on instruction, the second processor is configured to receive the second power-on instruction, control the second radio module to monitor in a set channel after receiving the second power-on instruction, the communication channel setting, and the flash parameter setting, after monitoring the broadcast of the master device, wait for a period of time according to a set rule, control the second radio module to perform carrier sensing, initiate an addition request to the master device when the channel is idle, the master device allocates a network address to the controlled flash device, and the controlled flash device succeeds in addition after replying confirmation.
Compared with the prior art, the invention has the following advantages by adopting the scheme:
according to the flash lamp control method and system, the off-line flash lamp state can be sensed, and an adjustment suggestion is given according to the flash result, on one hand, the main control equipment can sense the information such as the number, grouping, charging and discharging states or maximum brightness of the off-line flash lamps; on the other hand, the master control device sends out a flash instruction and simultaneously sends out a flash time synchronization signal to control each controlled flash lamp device to synchronously flash, after the controlled off-machine flash lamp flashes, the master control device obtains the actual flash brightness of the controlled flash lamp, and an adjustment suggestion can be given for a photographer to refer through calculation.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic view of a flashlight arrangement;
FIG. 2 is a schematic diagram of an application of a flash control system according to an embodiment of the present invention;
FIG. 3 is a block diagram of a flash control system according to an embodiment of the present invention;
fig. 4 is a timing diagram of a flash control method according to an embodiment of the invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the invention may be more readily understood by those skilled in the art. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.
Referring to fig. 2, a flash control system of the present embodiment includes a master control device 100 and a plurality of controlled flash devices 200. In the present embodiment, the main control device 100 is mounted on a camera hot shoe, and a plurality of controlled flash devices 200 are located around a photographic subject. The master control device 100 and each controlled flash device 200 perform two-way radio communication to control a plurality of controlled flash devices 200 to flash synchronously, and acquire flash information fed back by each controlled flash device to give a light arrangement suggestion for reference of a photographer.
Referring to fig. 3, the main control device 100 includes a first processor 11, a first display 12, a first storage device 13, a first user input device 14, a first radio module 15, and a first flash synchronization input device 17. In this embodiment, the main control device 100 also includes the first flash module 16. Each controlled flash device 200 includes a second processor 21, a second display 22, a second memory device 23, a second user input device 24, a second radio module 25, and a second flash module 26, respectively.
The first radio module 15 of the main control device 100 is used for radio communication with the second radio module 25 of each controlled flashing off lamp. The first user input device 14 is used for a user to input various instructions, such as communication channel setting, flash parameter setting, power on/off instructions, and the like. The first flash synchronization input device is used for receiving a flash synchronization signal sent by the camera. The first processor 11 is electrically connected to other modules of the main control device 100, and is configured to receive an instruction from a user and a signal from a camera, and accordingly issue a control instruction; for example, for receiving the flash synchronization signal and controlling the first radio module 15 to send out a flash instruction and a flash time synchronization signal after receiving the flash synchronization signal; and also for controlling the first radio module 15 to issue a flash result request instruction after the flash is finished. The first radio module 15 is further configured to receive a flash result returned by each second radio module 25; the first processor 11 is further configured to receive the flash result and perform calculation to give a lighting recommendation, where the lighting recommendation includes: adding or reducing the controlled flash devices in a certain controlled flash device group; or, the controlled flash devices 200 in one group are adjusted to another group. The first display 12 is used to display lighting advice. The first flash module 16 is used for flashing. The first memory device 13 is used for storing data such as flash results fed back by each controlled flash, and lighting advice and the like.
The second flash module 26 of each controlled flash device 200 is used to flash. The second radio module 25 is configured to receive the flash command, the flash time synchronization signal and the flash result request command from the first radio module 15. The second processor 21 is electrically connected to other modules of the controlled flash device 200, and is configured to receive an instruction from the main control device 100 or a user, and accordingly issue a control instruction, and the like; for example, the flash memory is configured to receive an instruction and a signal received by the second radio module 25, control the flash lamp to flash according to the flash synchronization time after receiving the flash instruction and the flash time synchronization signal, and determine whether information needs to be reported after receiving the instruction requesting the flash result, if so, control the second radio module 25 to perform carrier sensing, and if the channel is idle, send the flash result. The second display screen 22 is used to display a flash communication channel, flash status. The second flash module 26 is for flashing. The second memory device 23 is used to store the flash communication channel and other settings. The second user input device 24 is used for inputting user instructions, such as power-on and power-off instructions.
After waiting for the flash processing time, the first processor 11 controls the first radio module 15 to broadcast a flash result request instruction, where the flash result request instruction includes an address of the controlled flash device 200 whose information needs to be reported and available time T1; each second radio module 25 is configured to receive a flash result request instruction and send the flash result request instruction to the second processor 21, where the second processor 21 is configured to determine whether information needs to be reported after receiving the flash result request instruction, wait for a waiting time T2 according to a sequence if the information needs to be reported, where T2 is equal to T1 multiplied by an address sequence of the corresponding controlled flash device 200, and then perform carrier sensing, wait for a time T3 if a channel is busy, where T3 is equal to T1 multiplied by the number of the controlled flash devices 200 that need to be reported, and control the second radio module to send a flash result to the master control device 100 if the channel is idle.
The first user input device 14 is configured to allow a user to input a first power-on instruction, and the first process is configured to receive the first power-on instruction and, after receiving the first power-on instruction, periodically instruct the first radio module 15 to perform carrier detection on a set channel, wait until the channel is idle when the channel is busy, and control the first radio module 15 to broadcast current member summary information in sequence if the channel is idle.
The second user input device 24 is configured to allow a user to input a second power-on instruction, the second processor 21 is configured to receive the second power-on instruction, control the second radio module 25 to monitor a set channel after receiving the second power-on instruction, control the second radio module 25 to perform carrier sensing after monitoring the broadcast of the master control device 100 and waiting for a period of time according to a set rule, initiate a join request to the master control device 100 when the channel is idle, the master control device 100 allocates a network address to the controlled flash light device 200, and the controlled flash light device 200 replies a confirmation that the join is successful.
Referring to fig. 4, a flash control method according to the present embodiment includes the steps of:
s11, the first radio module 15 of the main control device 100 sends a flash instruction and a flash time synchronization signal to each controlled flash device;
s12, the second radio module 25 of the controlled flash device 200 receives the flash instruction and the flash time synchronization signal, and the controlled flash device 200 makes the corresponding flash synchronously flash according to the flash instruction and the flash time synchronization signal;
s13, after the main control device 100 waits for the flash processing time, the first radio module 15 broadcasts a flash result request instruction to each controlled flash device 200;
s14, the second radio module 25 of the controlled flash device 200 receives the flash result request instruction, and the controlled flash device 200 determines whether information needs to be reported, if so, the second radio module 25 of the controlled flash device 200 performs carrier sensing, and if the channel is idle, sends a flash result;
s15, the first radio module 15 receives the flash result returned by the second radio module 25, and the main control device 100 obtains the flash results of all the controlled flash devices 200 and performs calculation to give a light distribution suggestion.
In step S13, the command requesting the flash result includes the address of the controlled flash device 200 that needs to report information and the available time T1.
In step S14, if reporting is needed, the controlled flash device 200 waits for time T2 in sequence, where T2 is equal to T1 multiplied by the address sequence of the corresponding controlled flash device 200, and then performs carrier sensing, and if the channel is busy, waits for time T3, and T3 is equal to T1 multiplied by the number of the controlled flash devices 200 that need to be reported.
In step S15, after the time T4 elapses, T4 is equal to T1 multiplied by the number of controlled flash devices 200 that need to be reported, and the master control device 100 obtains flash results of all the controlled flash devices 200.
The flash control method further includes step S101, which precedes step S11: after the main control device 100 is powered on, the first radio module 15 performs carrier detection on a set channel at intervals, waits for idle if the channel is busy, and broadcasts the summary information of the current member if the channel is idle.
The flash control method further includes step S102, which is located before step S11: when a controlled flash device 200 is turned on, the second radio module 25 monitors a set channel, after monitoring the broadcast of the master control device 100, waits for a period of time according to a set rule, the second radio module 25 performs carrier sensing, if the channel is idle, initiates a join request to the master control device 100, the master control device 100 allocates a network address to the controlled flash device 200, and the controlled flash device 200 replies a confirmation and then joins successfully. Step S102 is repeated until the joining of the plurality of controlled flash devices 200 is successful.
The working process of the embodiment is as follows:
after the main control device 100 is powered on, at an interval t1, the first processor 11 instructs the first radio module 15 to perform carrier detection on a set channel, and waits for idle if the channel is busy, or broadcasts the summary information of the current members once through the first radio module 15 if the channel is idle;
after the controlled flash lamp device 200 is powered on, the second processor 21 controls the second radio module 25 to monitor on a set channel, after monitoring that the main control device 100 broadcasts, the second processor 21 waits for a period of time t2 (to avoid a network storm caused by the simultaneous initiation of a plurality of controlled flash lamp devices) according to a set rule and then controls the second radio module 25 to perform carrier sensing, when the second processor is idle, the second processor initiates a join request to the main control device 100, the main control device 100 replies and allocates a network address to the controlled flash lamp device 200, and the controlled flash lamp device 200 replies an acknowledgement and then successfully joins;
repeating the above steps to join the network of the master control device 100 by the plurality of controlled flash devices 200, until the master control device 100 can sense the information of the number, grouping setting, maximum brightness and the like of the controlled flash devices 200;
when the flash control is needed, the first processor 11 of the main control device 100 controls the first radio module 15 to send a flash command C1 and a flash time synchronization signal C2; the second radio module 25 of the controlled flash device 200 receives C1, C2 and sends them to the second processor 21, and the second processor 21 controls the flash unit 26 to flash; after waiting for the processing time t3 of C2, the first processor 11 of the main control device 100 controls the first radio module 15 to broadcast a flash request result command C3, where C3 includes the address of 200 pieces of information to be reported and the available time t4 of each device; after receiving C3, the second radio module 25 of the controlled flash device 200 sends the information to the second processor 21, and the processor determines whether information needs to be reported according to C3, if so, waits for time t4 multiplied by an address sequence according to the sequence of C3, then controls the wireless module 25 to perform carrier sensing, if the channel is busy, waits for time t4 multiplied by the number of 200 devices that need to be reported, and if the channel is idle, controls the wireless module 25 to send information such as a flash result to the main control device 100; after a plurality of time periods (t4, the number of the devices 200 that need to be reported), the main control device 100 obtains the flash results of all the controlled flash devices, and the first processor 11 gives a light distribution suggestion through the display 13 after calculation. For example, in the scenario shown in Table 1 (i.e., the display content of the first display 12), group A uses only 60% of the maximum brightness, group C uses 100% of the maximum brightness but still fails to meet the requirements, and devices are added to group C or one of the controlled flash devices 200 in group A is adjusted to group C.
TABLE 1
The embodiment has the following advantages:
the main control equipment can sense the number, grouping, power-back state, maximum brightness and flash output of the off-line flash lamps, and a photographer can know the working states of all the off-line flash lamps through a screen of the main control equipment. Based on the results returned by the off-flash for each flash, the master device may provide a light distribution prompt for the photographer to refer to, for example, the off-flash a is underexposed and the off-flash B, C has a margin to adjust the off-flash C to the position of a.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are preferred embodiments, which are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A flash lamp control method is characterized by comprising the following steps:
s11, the first radio module of the main control device sends out a flash instruction and a flash time synchronization signal to each controlled flash device;
s12, the second radio module of the controlled flash lamp device receives the flash instruction and the flash time synchronization signal, and the controlled flash lamp device synchronously flashes according to the flash instruction and the flash time synchronization signal and according to the flash synchronization time;
s13, after the main control device waits for the flash processing time, the first radio module broadcasts a flash result request instruction to each controlled flash device;
s14, the second radio module of the controlled flash device receives the flash result request instruction, and the controlled flash device determines whether information needs to be reported, if so, the second radio module of the controlled flash device performs carrier sensing, and if the channel is idle, sends a flash result;
and S15, the first radio module receives the flash result returned by the second radio module, and the master control device obtains the flash results of all the controlled flash lamp devices, calculates the flash results and gives a light distribution suggestion.
2. The method according to claim 1, wherein in step S13, the command requesting the flash result includes an address of a controlled flash device that needs to report information and an available time T1.
3. The method as claimed in claim 2, wherein in step S14, if reporting is required, the controlled flash devices wait for time T2 in order, where T2 is equal to T1 multiplied by the address order of the corresponding controlled flash devices, and then perform carrier sensing, and if the channel is busy, wait for time T3, where T3 is equal to T1 multiplied by the number of controlled flash devices required to report.
4. The method according to claim 3, wherein in step S15, after a time T4 elapses, T4 equals T1 times the number of controlled flash devices that need to be reported, and the master device obtains flash results of all the controlled flash devices.
5. The flash control method of claim 1, wherein the lighting recommendation comprises: adding or reducing the controlled flash devices in a certain controlled flash device group; or, one or more controlled flash devices in one group are adjusted to another group.
6. The flash control method according to claim 1, further comprising, before the step S11, a step S101 of: after the master control equipment is started, the first radio module carries out carrier detection on a set channel at intervals, waits for idle if the channel is busy, and broadcasts the summary information of the current members if the channel is idle.
7. The flash control method according to claim 1 or 6, further comprising, before the step S11, a step S102 of: when a controlled flash lamp device is started, the second radio module monitors a set channel, after the broadcast of the master control device is monitored, the second radio module waits for a period of time according to a set rule, the second radio module carries out carrier wave monitoring, if the channel is idle, the second radio module initiates a joining request to the master control device, the master control device distributes a network address to the controlled flash lamp device, and the controlled flash lamp device successfully joins after replying confirmation.
8. The method according to claim 7, wherein the step S102 is repeated until a plurality of controlled flash devices join successfully.
9. A flash control system comprising a master control device and a plurality of controlled flash devices, wherein the master control device comprises:
a first radio module for radio communication with each of the controlled flash light-off devices;
the first user input equipment is used for a user to input a communication channel and flash parameter setting;
the first flash signal input device is used for receiving flash synchronization signals sent by the camera; and
the first processor is used for controlling the first radio module to send out a flash instruction and a flash time synchronizing signal according to a communication channel and a flash parameter set by a user and the received flash synchronizing signal; the first radio module is also used for controlling the first radio module to send a flash result request instruction after the flash is finished;
each of the controlled flash devices includes:
a second flash module for flashing;
a second radio module for receiving the flash instruction, the flash time synchronization signal and the flash result request instruction sent by the first radio module; and
the second processor is used for receiving the instruction and the signal received by the second radio module, controlling the second flash module to flash according to the flash synchronization time after receiving the flash instruction and the flash time synchronization signal, judging whether information needs to be reported or not after receiving the instruction for requesting the flash result, controlling the second radio module to carry out carrier sense if the information needs to be reported, and sending the flash result if the channel is idle;
the first radio module is also used for receiving the flash results returned by the second radio modules; the first processor is also used for receiving the flash result, calculating the flash result and giving out a light distribution suggestion.
10. The flash control system of claim 9, wherein the master device further comprises a display screen for displaying the lighting advice, the lighting advice comprising: adding or reducing the controlled flash devices in a certain controlled flash device group; or, adjusting one or more controlled flash devices in a certain group into another group;
and/or after waiting for the flash processing time, the first processor controls the first radio module to broadcast the flash result request instruction, wherein the flash result request instruction comprises the address of the controlled flash device needing to report information and the available time T1; each second radio module is configured to receive the flash request result instruction and send the flash request result instruction to the second processor, where the second processor is configured to determine whether information needs to be reported after receiving the flash request result instruction, wait for a waiting time T2 according to a sequence if the information needs to be reported, where T2 is equal to T1 multiplied by an address sequence of a corresponding controlled flash device, and then perform carrier sensing, wait for a time T3 if a channel is busy, where T3 is equal to T1 multiplied by the number of the controlled flash devices that need to be reported, and control the second radio module to send a flash result to the master control device if the channel is idle.
Priority Applications (1)
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