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CN117614939B - 485 Communication address automatic allocation method for image light supplementing device - Google Patents

485 Communication address automatic allocation method for image light supplementing device Download PDF

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Publication number
CN117614939B
CN117614939B CN202410076607.1A CN202410076607A CN117614939B CN 117614939 B CN117614939 B CN 117614939B CN 202410076607 A CN202410076607 A CN 202410076607A CN 117614939 B CN117614939 B CN 117614939B
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China
Prior art keywords
light supplementing
supplementing device
communication
address allocation
strobe
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CN202410076607.1A
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CN117614939A (en
Inventor
朱广虎
陈小波
徐辉
张淳
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Hangzhou Fangqian Technology Co ltd
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Hangzhou Fangqian Technology Co ltd
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B15/00Special procedures for taking photographs; Apparatus therefor
    • G03B15/02Illuminating scene
    • G03B15/03Combinations of cameras with lighting apparatus; Flash units
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/50Address allocation
    • H04L61/5038Address allocation for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/50Address allocation
    • H04L61/5069Address allocation for group communication, multicast communication or broadcast communication
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

The invention discloses a 485 communication address automatic allocation method for an image light supplementing device, which relates to the technical field of digital information transmission and comprises the following steps: the configuration address broadcast is sent to the light supplementing device through 485 communication, and the light supplementing device is controlled to enter an address allocation state; according to the connection mode of the stroboscopic interface between the current camera and the light supplementing device, sending stroboscopic signals to the light supplementing device according to a sending time sequence corresponding to the connection mode; and sequentially receiving address allocation requests sent by the light supplementing device after receiving the strobe signals through 485 communication, and carrying out address allocation of the corresponding light supplementing device through 485 communication after receiving the address allocation requests. According to the invention, by outputting the strobe signals under different receiving and transmitting time sequences to the light supplementing device, the light supplementing device is controlled to send the address configuration request to the camera through 485 communication according to a certain sequence, so that automatic allocation of the 485 communication address of the light supplementing device is realized.

Description

485 Communication address automatic allocation method for image light supplementing device
Technical Field
The invention relates to the technical field of digital information transmission, in particular to an automatic 485 communication address allocation method for an image light supplementing device.
Background
The image monitoring light supplementing device is matched with the camera for use, and is used for receiving a control signal of the camera and controlling the on-off state of the light supplementing lamp according to the frequency and the duty ratio of the signal. The types of interfaces between the camera and the image monitoring and light supplementing device typically include a switching value signal, a level quantity signal, and an RS485 communication interface. These devices are typically mounted on outdoor masts or poles, with a single camera communicating with up to 5 light filling lamps 485 at the same time. The light filling lamp device needs to have different 485 communication addresses to receive the control command sent by the camera and send the status information.
At present, as the camera and the image monitoring light supplementing device are arranged on a higher rod piece, ascending equipment is needed for debugging, and larger workload and debugging cost are brought to technicians. Therefore, developing an automatic allocation method for the site 485 communication address is important for the image monitoring and light supplementing device.
The existing address allocation mode is usually to access the light-compensating lamps one by one during engineering construction, and set the addresses of the light-compensating devices through a camera or configuration software. This approach increases the difficulty, cost and construction period of construction. Because debugging each light filling lamp alone can lead to the missing of address to set up or repeated setting, need the rewiring to set up again after finding in later stage debugging, seriously wasted engineering time and human cost.
Another existing address allocation mode is to design a plurality of 485 communication hardware interfaces at the camera end, and each interface is separately connected with a light supplementing device to realize independent control of the light supplementing device. However, this approach requires that 485 communication from each light supplementing device must be wired individually to the camera, cannot be cascaded or connected in parallel, and increases the difficulty of construction wires and wiring. Further, when a problem occurs, it is difficult to determine whether it is a problem of the camera or a problem of the light supplementing device, while also increasing hardware cost of the camera.
Disclosure of Invention
In order to solve the above problems in the prior art when the outdoor image light filling lamp is arranged, the invention provides an automatic 485 communication address allocation method for an image light filling device, wherein single 485 communication is adopted between the light filling device and a camera, and the sending time sequence control of 485 address allocation requests is carried out according to the receiving and sending time sequences of strobe signals between the camera and the light filling device, and the method specifically comprises the following steps:
S1: the configuration address broadcast is sent to the light supplementing device through 485 communication, and the light supplementing device is controlled to enter an address allocation state;
S2: according to the connection mode of the stroboscopic interface between the current camera and the light supplementing device, sending stroboscopic signals to the light supplementing device according to a sending time sequence corresponding to the connection mode;
S3: and sequentially receiving address allocation requests sent by the light supplementing device after receiving the strobe signals through 485 communication, and carrying out address allocation of the corresponding light supplementing device through 485 communication after receiving the address allocation requests.
Further, in the step S2, the connection manner of the strobe interface includes:
The serial connection mode of the strobe interface between the camera single strobe interface and the light supplementing device;
the strobe interface parallel connection mode between the camera single strobe interface and the light supplementing device;
The strobe interface between the camera and the light supplementing device under the multi-frequency strobe interface is matched one by one.
Further, in the serial manner, the transmission timing of the strobe signal is: and according to the serial connection sequence of the camera and the strobe interface of the light supplementing device, after 485 communication address allocation of the current light supplementing device is completed, a cascade strobe signal is sent to the next light supplementing device by the current light supplementing device through a strobe signal output end.
Further, in the pairing mode, the sending time sequence of the strobe signal is as follows: and sending a strobe signal to the pairing light supplementing device through the next strobe interface after finishing the address allocation of the current strobe interface corresponding to the light supplementing device according to the sequencing of the strobe interfaces of the camera segment.
Further, in the serial connection mode and the pairing mode, address allocation of the corresponding light supplementing device is performed according to the address allocation request time sequence received through 485 communication.
Further, in the parallel manner, the transmission timing of the strobe signal is: the camera synchronously transmits strobe signals to each light supplementing device.
Further, in the parallel connection mode, address allocation of the corresponding light supplementing device is performed according to an address allocation request sent to the camera by 485 communication when the light supplementing device is delayed randomly.
Further, in the address automatic allocation process, the method further comprises the steps of:
S4: and (3) judging whether the preset termination time is reached, if so, ending the automatic address allocation, and if not, returning to the step (S3).
Further, in the automatic address allocation process, the LED lamp flashing signals with different flashing frequencies are used for displaying the address allocation state of the light supplementing device.
Compared with the prior art, the invention at least has the following beneficial effects:
(1) According to the 485 communication address automatic allocation method for the image light supplementing device, strobe signals under different receiving and transmitting time sequences are output to the light supplementing device, so that the light supplementing device is controlled to send address allocation requests to a camera through 485 communication according to a certain sequence, and automatic allocation of 485 communication addresses of the light supplementing device is realized;
(2) Because the strobe signal receiving and transmitting time sequence is adopted to carry out the sequencing of 485 communication address configuration, only a conventional 485 communication line is required to be arranged, the construction wires are reduced, and the wiring difficulty is reduced;
(3) Full-automatic address allocation reduces the possibility of missing or repeated setting, and reduces the time and labor cost of later debugging.
Drawings
FIG. 1 is a step diagram of a 485 communication address automatic allocation method for an image light supplementing device;
FIG. 2 is a schematic diagram of a serial connection of strobe interfaces;
FIG. 3 is a schematic diagram of a parallel connection of strobe interfaces;
fig. 4 is a schematic diagram of a pairing mode of strobe interfaces one by one.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Considering that the combination mode of a single host and multiple slaves is adopted between the camera and the light supplementing device, the light supplementing device does not bear the demand of instruction issuing, meanwhile, short-distance communication is adopted between the camera and the light supplementing device, and the RS485 with higher cost performance is more applied to data transmission between the camera and the light supplementing device under the condition that the short-distance communication also has excellent transmission rate. The invention combines the characteristics of cameras and image monitoring light filling devices commonly used in the market and the types of interface signals, optimizes the automatic communication address allocation method of the image monitoring light filling devices, as shown in fig. 1, and provides an automatic 485 communication address allocation method for the image light filling devices, wherein the light filling devices are in single 485 communication with the cameras, and the sending time sequence control of 485 communication address allocation requests is carried out according to the receiving and sending time sequences of strobe signals between the cameras and the light filling devices, and specifically comprises the following steps:
S1: the configuration address broadcast is sent to the light supplementing device through 485 communication, and the light supplementing device is controlled to enter an address allocation state;
S2: according to the connection mode of the stroboscopic interface between the current camera and the light supplementing device, sending stroboscopic signals to the light supplementing device according to a sending time sequence corresponding to the connection mode;
S3: sequentially receiving address allocation requests sent by the light supplementing device after receiving the strobe signals through 485 communication, and carrying out address allocation of the corresponding light supplementing device through 485 communication after receiving the address allocation requests;
S4: and (3) judging whether the preset termination time is reached, if so, ending the automatic address allocation, and if not, returning to the step (S3).
In detail, the invention realizes the address allocation under the single channel 485 communication by the linkage between the strobe signal (electric signal, one-way communication) and the single channel 485 communication (digital signal, two-way communication). After the light supplementing device receives the configuration address broadcast sent by the camera through 485 communication and enters an address allocation state, the light supplementing device flashes at the frequency of 2hz through the LED lamp on the device so as to inform debugging personnel that the current light supplementing device enters the address allocation state.
After each light filling device enters an address allocation state, the problems that if address allocation is carried out through a single 485 communication line, address missing or repeated arrangement possibly exists, and meanwhile, high construction difficulty and long working period cost are caused by connecting the light filling lamps one by one are also considered. According to the invention, through the transmission of one or more strobe signals, the light supplementing device is allowed to send an address allocation request through 485 communication only after receiving the strobe signals, so that the linkage with RS485 communication is realized, and the sequential configuration of the communication addresses of the light supplementing device 485 is further completed. Specifically, the linkage mode is related to different strobe interface connection modes between the camera and the light supplementing device, and in this embodiment, three connection modes are exemplified in total, respectively:
The serial connection mode of the strobe interface between the camera single strobe interface and the light supplementing device;
The parallel connection mode of the strobe interface between the camera single strobe interface and the light supplementing device is shown in fig. 3;
the strobe interfaces under the multi-frequency strobe interface of the camera and the light supplementing device are matched one by one, as shown in fig. 4.
As shown in fig. 2, in the serial mode, after the light compensating device enters the address allocation state, the light compensating device directly connected to the strobe interface of the camera receives the strobe signal preferentially, and requests and allocates the communication address based on 485 communication. After the light supplementing device finishes address allocation, the light supplementing device can send cascade strobe signals to the next light supplementing device through a cascade interface, and the next light supplementing device performs 485 communication address request allocation. Thus, the automatic allocation of the communication addresses of the light supplementing devices 485 can be sequentially realized according to the cascade sequence.
As shown in fig. 3, in the parallel mode, after the light compensating devices enter the address allocation state, since each light compensating device is connected to the same strobe interface of the camera, strobe signals are received simultaneously. In order to diverge the time points of the address allocation of the light supplementing devices, a delay mechanism is added in the invention, each light supplementing device carries out corresponding random delay and then sends an address request signal through 485 communication, and a camera sequentially configures 485 communication addresses for the corresponding light supplementing devices according to the sequence from short delay to long delay.
As shown in fig. 4, in the pairing mode, after the light compensating device enters the address allocation state, the camera sequentially sends the strobe signals according to the sequence of the strobe interfaces of the camera, and the different light compensating devices sequentially receive the strobe signals of the different interfaces, so that the 485 communication addresses are sequentially allocated.
In the process of address allocation, the light supplementing device for completing the address allocation can also adjust the flicker frequency of the LED lamp to 0.5hz so as to express the status information of the completion of the address allocation to debugging personnel. Through the scintillation of LED lamp and the regulation of frequency, can help the debugging personnel more audio-visual understanding each light filling device's address configuration state and configuration sequence to can judge which node light filling device or which 485 communication or which stroboscopic interface breaks down according to the connected mode of current stroboscopic interface, and then improve the maintenance accuracy, reduce the man-hour and the manpower consumption of fault location.
Meanwhile, in the process of configuring the address, the light supplementing device is also assisted to exit the address allocation state by setting a preset termination time (for example, 60 seconds).
In summary, according to the 485 communication address automatic allocation method for the image light supplementing device provided by the invention, the 485 communication address is automatically allocated by utilizing one channel of 485 communication interface of the camera and a conventional stroboscopic interface. This means that under the common construction wiring types, such as parallel connection, cascade connection, multi-way connection and the like, the automatic allocation of addresses can be realized by clicking the relevant setting buttons of the cameras. By observing the display states of the camera interface and the light supplementing device lamp, whether the addresses are successfully allocated or not can be judged, and convenience and efficiency improvement are brought to construction work in related industries.
The automatic distribution method has the advantages of simplifying the construction process and reducing the workload of operators. Meanwhile, repeated labor caused by misjudgment can be avoided, and the construction efficiency is improved. By the method and the device, the technical requirements of common engineering operators are reduced, so that more people can operate and complete related tasks. And the scheme can not increase the hardware cost of the light supplementing device and the camera end, is applicable to various wiring modes, is easy to learn and use, is stable and reliable, and is very suitable for comprehensive popularization and application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.

Claims (4)

1. The automatic 485 communication address allocation method for the image light supplementing device is characterized in that single 485 communication is adopted between the light supplementing device and a camera, and the sending time sequence of 485 communication address allocation requests is controlled according to the receiving and sending time sequences of strobe signals between the camera and the light supplementing device, and the method specifically comprises the following steps:
S1: the configuration address broadcast is sent to the light supplementing device through 485 communication, and the light supplementing device is controlled to enter an address allocation state;
S2: according to the connection mode of the stroboscopic interface between the current camera and the light supplementing device, sending stroboscopic signals to the light supplementing device according to a sending time sequence corresponding to the connection mode;
S3: sequentially receiving address allocation requests sent by the light supplementing device after receiving the strobe signals through 485 communication, and carrying out address allocation of the corresponding light supplementing device through 485 communication after receiving the address allocation requests;
the stroboscopic signal is an electric signal, and the 485 communication is a digital signal;
in the step S2, the connection mode of the strobe interface includes:
The serial connection mode of the strobe interface between the camera single strobe interface and the light supplementing device;
the strobe interface parallel connection mode between the camera single strobe interface and the light supplementing device;
a strobe interface one by one pairing mode between the camera multi-frequency strobe interface and the light supplementing device;
in the serial mode, the sending time sequence of the strobe signal is as follows: according to the serial connection sequence of the camera and the strobe interface of the light supplementing device, after 485 communication address allocation of the current light supplementing device is completed, a cascade strobe signal is sent to the next light supplementing device from the strobe signal output end of the current light supplementing device;
Under the one-by-one pairing mode, the sending time sequence of the strobe signal is as follows: according to the sequence of the strobe interfaces of the camera segment, after the address allocation of the corresponding light supplementing device of the current strobe interface is completed, a strobe signal is sent to the paired light supplementing device through the next strobe interface;
Under the serial connection mode and the one-by-one pairing mode, address allocation of the corresponding light supplementing device is carried out according to address allocation request time sequences received through 485 communication;
in the parallel mode, the sending time sequence of the strobe signal is as follows: the camera synchronously transmits strobe signals to each light supplementing device.
2. The automatic 485 communication address allocation method for image light supplementing devices according to claim 1, wherein in the parallel connection mode, address allocation of the corresponding light supplementing devices is performed according to address allocation requests sent to cameras by 485 communication when the light supplementing devices are randomly delayed.
3. The automatic 485 communication address allocation method for an image light supplementing device according to claim 1, further comprising the steps of, in the automatic address allocation process:
S4: and (3) judging whether the preset termination time is reached, if so, ending the automatic address allocation, and if not, returning to the step (S3).
4. The automatic 485 communication address allocation method for an image light supplementing device according to claim 1, wherein in the automatic address allocation process, the display of the address allocation state of the light supplementing device is performed by flashing signals of LED lamps with different flashing frequencies.
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