CN114449144B - Snapshot linkage device and method of multi-path camera - Google Patents
Snapshot linkage device and method of multi-path camera Download PDFInfo
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- CN114449144B CN114449144B CN202210004913.5A CN202210004913A CN114449144B CN 114449144 B CN114449144 B CN 114449144B CN 202210004913 A CN202210004913 A CN 202210004913A CN 114449144 B CN114449144 B CN 114449144B
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- 238000012545 processing Methods 0.000 claims description 5
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
Abstract
The application provides a snapshot aggregate unit and method of multichannel camera, and the device includes: the system comprises a first camera, a control module and at least one second camera, wherein the control module is respectively in communication connection with the first camera and the at least one second camera; the first camera is used for obtaining a first image when detecting an object to be captured and sending a capturing signal to the control module; the control module is used for receiving the snapshot signals, determining linkage snapshot signals according to the snapshot signals and sending the linkage snapshot signals to the second camera; the second camera is used for receiving linkage snapshot signals and realizing snapshot to obtain at least one frame of second image. The scheme can realize multi-path camera snapshot linkage on the basis of not damaging the structure of the camera.
Description
Technical Field
The invention belongs to the technical field of security protection, and particularly relates to a snapshot linkage device and method of a multi-path camera.
Background
With the development of technology, traffic gate cameras are increasingly applied at present, and when the same target information is acquired, the observation of multiple characteristics is gradually increased, and the real-time performance is required to be strong. In the traffic industry, two or more cameras of different wavebands are required by staff to monitor the interior and exterior of a traveling vehicle in all directions. The synchronous linkage scheme of the two multiband cameras is mainly realized on the same video processing board shared by the two cameras, the scheme is inflexible to use, and particularly, the linkage difficulty is high for the cameras of different manufacturers or brands, and the scheme is low in expandability and high in price.
Disclosure of Invention
An object of an embodiment of the present disclosure is to provide a snapshot linkage device and a method for a multi-path camera.
In order to solve the technical problems, the embodiments of the present application are implemented in the following manner:
in a first aspect, the present application provides a snap shot linkage for a multi-way camera, the apparatus comprising: the system comprises a first camera, a control module and at least one second camera, wherein the control module is respectively in communication connection with the first camera and the at least one second camera;
the first camera is used for obtaining a first image when detecting an object to be captured and sending a capturing signal to the control module;
the control module is used for receiving the snapshot signals, determining linkage snapshot signals according to the snapshot signals and sending the linkage snapshot signals to the second camera;
the second camera is used for receiving linkage snapshot signals and realizing snapshot to obtain at least one frame of second image.
In one embodiment, the control module comprises a protocol conversion module, a power supply module and a level conversion module; the protocol conversion module is respectively connected with the power supply module and the level conversion module, and the power supply module is connected with the level conversion module;
the protocol conversion module is used for converting the protocol between the first camera and the second camera;
the level conversion module is used for level conversion between the first camera and the second camera;
the power supply module is used for supplying power to the protocol conversion module and the level conversion module.
In one embodiment, the control module employs an integrated circuit chip or a circuit with signal processing capabilities.
In one embodiment, the first camera includes a first serial communication module, and the first camera is communicatively connected to the control module through the first serial communication module.
In one embodiment, the second camera includes a second serial communication module, and the second camera is communicatively connected to the control module through the second serial communication module.
In one embodiment, the first image is adjacent to the second image.
In a second aspect, the present application provides a snapshot linkage method of a multi-path camera, using the snapshot linkage device of the multi-path camera according to the first aspect, the method comprising:
the control module receives a snapshot signal sent by a first camera;
the control module determines linkage snapshot signals according to the snapshot signals;
the control module sends linkage snapshot signals to the at least one second camera so that the at least one second camera can realize snapshot.
In one embodiment, the control module determines a linkage snapshot signal according to the snapshot signal, including:
the control module protocol analyzes the snapshot signals and performs level conversion to obtain a serial port communication protocol of the second camera;
and determining the serial communication protocol as a linkage snapshot signal.
In one embodiment, the control module determines a linkage snapshot signal according to the snapshot signal, including:
and after receiving the snapshot signal for a preset time period, the control module generates a linkage snapshot signal.
The technical scheme provided by the embodiment of the present specification can be seen from the following scheme:
the problem that the multi-camera does not support synchronous snapshot is solved through the external control module, the structure of the camera is not required to be destroyed, multi-path camera linkage can be realized, the price is low, the realization is simple, and the production is convenient.
The camera is suitable for two or more bayonet cameras of the same or different manufacturers and models.
Drawings
In order to more clearly illustrate the embodiments of the present description or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some of the embodiments described in the present description, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a snapshot linkage device of a multi-path camera provided by the application;
fig. 2 is a schematic structural diagram of a control module provided in the present application;
fig. 3 is a flow chart of a snap linkage method of a multi-path camera provided in the present application.
Detailed Description
In order to make the technical solutions in the present specification better understood by those skilled in the art, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only some embodiments of the present specification, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are intended to be within the scope of the present disclosure.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to the skilled person from the description of the present application. The specification and examples are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
The "parts" in the present application are all parts by mass unless otherwise specified.
In order to realize the monitoring of the inside and the outside of the vehicle, the traffic industry mostly adopts color images or infrared images to collect information, the color images are mostly used for observing vehicle information, such as license plates, vehicle body colors, vehicle logos and the like, and the infrared camera is mostly matched with a light supplementing lamp to be used for collecting the information of a driver in the vehicle. However, the prior art is inflexible in processing, and particularly when cameras of different manufacturers or brands are adopted to collect images, the linkage difficulty is high, and the expansibility is low.
The application provides a synchronous snapshot device of multichannel camera adopts low-cost external control module, realizes that multichannel camera is real-time to trigger the snapshot, reaches two or many camera linkage. The device can not bind any manufacturer or product model, adopts serial port communication of cameras, and expands among different cameras through a control module to realize snapshot control linkage.
The invention is described in further detail below with reference to the drawings and examples.
Referring to fig. 1, a schematic structural diagram of a snap shot linkage suitable for use in a multi-path camera provided in an embodiment of the present application is shown.
As shown in fig. 1, the snapshot linkage of the multi-path camera may include: the camera comprises a first camera 10, a control module 20 and at least one second camera 30, wherein the control module 20 is respectively in communication connection with the first camera 10 and the second camera 30;
the first camera 10 is configured to obtain a first image when detecting an object to be captured, and send a capturing signal to the control module 20;
the control module 20 is configured to receive the snapshot signal, determine a linkage snapshot signal according to the snapshot signal, and send the linkage snapshot signal to the second camera 30;
the second camera 30 is configured to receive the linkage snapshot signal and implement snapshot to obtain at least one frame of a second image.
Optionally, the first camera includes a first serial communication module, and the first camera is communicatively connected with the control module through the first serial communication module.
Optionally, the second camera includes a second serial communication module, and the second camera is communicatively connected to the control module through the second serial communication module.
In particular, the at least one second camera 30 may include one second camera and more than one second camera, without limitation. The first camera 10 and the second camera 30 are arbitrarily selected cameras, and a certain model camera is not specified. Both the first camera 10 and the second camera 30 may employ a bayonet camera.
The object to be snap shot may be a moving object or target, such as a vehicle, without limitation.
When the first camera 10 detects that the vehicle passes, a snapshot signal is output to the control module 30 through the first serial communication module, and meanwhile, the color image acquisition device of the first camera 10 acquires a first image in a state that the vehicle passes. The control module 20 acquires the snapshot signal of the first camera 10, obtains a linkage snapshot signal through protocol conversion and serial port protocol, and is used as an input signal of the second camera 30 to trigger the second camera 30 to realize snapshot, and the second camera 30 obtains at least one frame of second image. Wherein the first image and the second image are adjacent.
Note that the snapshot signals output by the first camera 10 include, but are not limited to, level and switch signals.
In one embodiment, as shown in fig. 2, the control module 20 includes a protocol conversion module 201, a power supply module 202, and a level conversion module 203; the protocol conversion module 201 is respectively connected with the power supply module 202 and the level conversion module 203, and the power supply module 202 is connected with the level conversion module 203;
a protocol conversion module 201 for converting a protocol between the first camera 10 and the second camera 30;
a level conversion module 203 for level conversion between the first camera 10 and the second camera 30;
the power module 202 is used for supplying power to the protocol conversion module 201 and the level conversion module 203.
Specifically, the protocol conversion module 201 may use a single chip microcomputer, where the protocol conversion module requires rich resources, can support multiple serial ports to communicate in parallel, and has strong serial port expansion capability.
Alternatively, the control module may employ an integrated circuit chip or a circuit having a signal processing function. Such as a general purpose processor, a digital signal processor, an FPGA or other programmable logic device, discrete gate or transistor logic devices, discrete hardware components, or the like.
The control module needs to support protocol conversion, level conversion and transmission of multiple serial ports.
The embodiment of the application provides a multi-path camera's snap action aggregate unit, through external control module, has solved the problem that the multi-phase camera does not support synchronous snap action, and need not to destroy camera own structure, can realize multi-path camera linkage, low price, realization are simple, the production of being convenient for.
The snapshot linkage device of the road camera is suitable for two or more than two bayonet cameras of the same or different manufacturers and models.
Referring to fig. 3, a flow diagram of a snap-shot linkage method applicable to a multi-path camera provided in an embodiment of the present application is shown.
As shown in fig. 3, the snap-shot linkage method of the multi-path camera may include:
s310, a control module receives a snapshot signal sent by a first camera;
s320, the control module determines linkage snapshot signals according to the snapshot signals;
s330, the control module sends linkage snapshot signals to at least one second camera so as to enable the at least one second camera to realize snapshot.
Optionally, the step S320 control module determines, according to the snapshot signal, a linkage snapshot signal, which may be:
the control module protocol analyzes the snapshot signals and performs level conversion to obtain a serial port communication protocol of the second camera;
and determining the serial communication protocol as a linkage snapshot signal.
In this embodiment, the first camera sends out a snapshot signal, after the control module receives the snapshot signal, the protocol conversion module in the control module performs protocol analysis on the snapshot signal, and meanwhile, level conversion is performed through the level conversion module in the control module to obtain a serial port communication protocol, the serial port communication protocol is used as a linkage snapshot signal, the linkage snapshot signal is sent to the second camera through the second serial port communication module, and the second camera realizes snapshot. If there is only one second camera, two paths of cameras are simultaneously snapped, and if there is more than one second camera, multiple paths of cameras are simultaneously snapped.
It can be understood that the snapshot signal sent by the first camera is a high-low level switch signal or an IO level signal, the signal does not have a protocol, and the IO level signal is generally a 0-5V level signal. The level signal is used as an input and transmitted to the control module, and after protocol conversion and level conversion by the control module, the level signal is converted into an RS serial port level or serial port communication protocol which can trigger the second camera, and the RS serial port level is generally-12V-10V.
Note that, the above-mentioned communication protocol controls the baud rate to be an adjustable band, and the maximum baud rate is 115200 baud rate.
Optionally, the step S320 control module determines a linkage snapshot signal according to the snapshot signal, and may further be:
and after receiving the snapshot signal for a preset time period, the control module generates a linkage snapshot signal.
Specifically, the preset time period may be determined by a transmission time of the first trigger signal and a preset time interval.
According to the snapshot linkage method of the multipath camera, when a vehicle passes, the vehicle can be monitored rapidly, and information in the vehicle and information outside the vehicle can be synchronously snapshot, so that the real-time problem of the same target collection is solved.
According to the snapshot linkage method of the multi-path camera, the IO terminal or the level signal terminal of the first camera is used as the signal input of the other multiple bayonet cameras, the level and protocol conversion is carried out through the control module, the control signal is converted into the RS serial communication mode, the multiple bayonet cameras are controlled, and the snapshot linkage is achieved. The serial communication method has the advantages of less used lines and low cost, and particularly avoids the defect of inconsistent characteristics of a plurality of lines during remote transmission.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
Claims (7)
1. A snap-shot linkage device of a multi-path camera is characterized in that,
the device comprises: the system comprises a first camera, a control module and at least one second camera, wherein the control module is respectively in communication connection with the first camera and the at least one second camera;
the first camera is used for obtaining a first image when detecting an object to be captured and sending a capturing signal to the control module;
the control module is used for receiving the snapshot signals, determining linkage snapshot signals according to the snapshot signals and sending the linkage snapshot signals to the second camera;
the second camera is used for receiving the linkage snapshot signal and realizing snapshot to obtain at least one frame of second image;
the control module comprises a protocol conversion module, a power supply module and a level conversion module; the protocol conversion module is respectively connected with the power supply module and the level conversion module, and the power supply module is connected with the level conversion module;
the protocol conversion module is used for converting a communication protocol between the first camera and the second camera;
the level conversion module is used for level conversion between the first camera and the second camera;
the power supply module is used for supplying power to the protocol conversion module and the level conversion module.
2. The apparatus of claim 1, wherein the control module employs an integrated circuit chip or a circuit having a signal processing function.
3. The apparatus of any of claims 1-2, wherein the first camera comprises a first serial communication module, the first camera communicatively coupled to the control module via the first serial communication module.
4. The apparatus of any of claims 1-2, wherein the second camera comprises a second serial communication module, the second camera communicatively coupled to the control module via the second serial communication module.
5. The apparatus of any of claims 1-2, wherein the first image is adjacent to the second image.
6. A method of snap-action linkage of a multi-way camera employing a snap-action linkage of a multi-way camera as claimed in any one of claims 1 to 5, the method comprising:
the control module receives a snapshot signal sent by a first camera;
the control module determines linkage snapshot signals according to the snapshot signals;
the control module sends the linkage snapshot signal to at least one second camera so as to enable the at least one second camera to realize snapshot;
the control module determines linkage snapshot signals according to the snapshot signals, and comprises:
the control module protocol analyzes the snapshot signal and performs level conversion on the snapshot signal to obtain a serial port communication protocol of the second camera;
and determining the serial communication protocol as the linkage snapshot signal.
7. The method of claim 6, wherein the control module determining a linked snapshot signal from the snapshot signal comprises:
and after receiving the snapshot signal for a preset time period, the control module generates the linkage snapshot signal.
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