CN213072874U - Synchronization system for high-speed camera and high-speed camera acquisition system - Google Patents
Synchronization system for high-speed camera and high-speed camera acquisition system Download PDFInfo
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- CN213072874U CN213072874U CN202022032570.2U CN202022032570U CN213072874U CN 213072874 U CN213072874 U CN 213072874U CN 202022032570 U CN202022032570 U CN 202022032570U CN 213072874 U CN213072874 U CN 213072874U
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Abstract
The utility model discloses a synchronizing system and high-speed camera collection system for high-speed camera, this synchronizing system includes: the decoding module receives information input by an external time service source and decodes the information to obtain time service information; the processing module is connected with the decoding module and used for receiving the time service information output by the decoding module and analyzing the time service information to obtain effective time; the B code coding module is connected with the effective time output by the processing module to carry out IRIG-B coding to obtain a time service signal; the frequency division module is connected with the processing module, receives the effective time obtained by the processing module and performs frequency division processing to obtain a synchronous signal. By implementing the present invention, a timing signal and a synchronization signal output can be obtained. Therefore, the synchronization system can provide time service signals and synchronization signals for high-speed camera image acquisition, and meets the high-precision triggering requirement of high-speed camera acquisition shooting.
Description
Technical Field
The utility model relates to a high-speed camera technical field, concretely relates to a synchronization system and high-speed camera collection system for high-speed camera.
Background
The high-speed camera, as an industrial camera, has high image stability, high transmission capability and high interference resistance. High-speed digital camera image acquisition has been widely used in various fields such as scientific research, military industry, discrete manufacturing industry, intelligent transportation and the like. Phenomena and scenes which cannot be observed by a conventional camera can be acquired, and higher requirements are put on the trigger precision and the time precision of a high-speed camera. Especially, the requirement on the accuracy that scenes shot by a plurality of cameras at the same time need to be synchronized is higher.
When the high-speed camera shoots, the highest acquisition speed of thousands of frames per second can be achieved, so the precision requirement on time reaches microsecond level, and general time equipment cannot be directly applied to the field of high-speed cameras, namely, the precision cannot meet the requirement, and the high-speed camera lacks necessary functions.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a synchronization system and high-speed camera collection system for high-speed camera to solve many high-speed cameras and shoot the technical problem that synchronous precision can't reach the requirement simultaneously among the prior art.
The embodiment of the utility model provides a first aspect provides a synchronization system for high-speed camera, and this synchronization system includes: the decoding module receives information input by an external time service source and decodes the information to obtain time service information; the processing module is connected with the decoding module and used for receiving the time service information output by the decoding module and analyzing the time service information to obtain effective time; the B code coding module is connected with the effective time output by the processing module to carry out IRIG-B coding to obtain a time service signal; the frequency division module is connected with the processing module and receives the effective time obtained by the processing module to carry out frequency division processing to obtain a synchronous signal.
Optionally, the decoding module comprises: NTP decoder, radio frequency communication module and IRIG-B code receiving module.
Optionally, the synchronization system for a high-speed camera further comprises: and the clock module is connected with the processing module and is used for providing time information for the processing module.
Optionally, the synchronization system for a high-speed camera further comprises: and the signal amplification module is connected with the B code coding module and the frequency division module and is used for receiving the time service signal and the synchronous signal, amplifying and then outputting the time service signal and the synchronous signal.
Optionally, the synchronization system for a high-speed camera further comprises: and the time target display module is connected with the B code coding module and is used for receiving the time service signal output by the B code coding module and displaying time.
Optionally, the time target display module comprises: the LED dot matrix control unit receives the time service signal, analyzes the time service signal to obtain time information, and displays the time information on the LED dot matrix.
Optionally, the time target display module comprises: the nixie tube driving unit receives the time service signal, analyzes the time service signal to obtain time information, and displays the time information on the nixie tube.
The embodiment of the utility model provides a second aspect provides a high-speed camera collection system, and two at least high-speed cameras of this system reach the utility model provides a first aspect and first aspect arbitrary synchronous system for high-speed camera, the high-speed camera is connected synchronous system is used for receiving the time service signal and the synchronizing signal of synchronous system output.
Optionally, the high-speed camera acquisition system further comprises: and the high-speed storage chip is connected with the high-speed camera and is used for storing the image acquired by the high-speed camera.
The utility model discloses technical scheme has following advantage:
the embodiment of the utility model provides a synchronous system for high-speed camera, information decoding through setting up the decoding module and receiving outside time service source obtains the time service information, it obtains the active time to set up the analytic time service information of processing module, set up B code encoding module and frequency division module simultaneously and obtain time service signal and synchronizing signal output according to the active time, from this, this synchronous system can provide time service signal and synchronizing signal at high-speed camera image acquisition, satisfy the high accuracy trigger requirement that the high-speed camera gathered the shooting.
The embodiment of the utility model provides a synchronizing system for high-speed camera, time service time sources such as joinable satellite, network, IRIG-B external source to self can produce virtual time service signal, applicable in multiple application scene. Meanwhile, high-precision time service information is generated through the synchronous system, a PPS signal in the time service information is extracted by the processing module, and after frequency division processing, the high-speed camera can be triggered more accurately, and errors are smaller when multiple cameras shoot simultaneously.
The embodiment of the utility model provides a synchronous system for high-speed camera, unified be the IRIG-B sign indicating number back with the time service information and carry out the time service to the camera again through frequency division processing, can break through the restriction of general time service, provide the time service information of higher precision such as microsecond level. Meanwhile, a synchronization signal is generated based on PPS information in IRIG-B code information, and after frequency division and other processing, the precision is greatly improved, and the requirement of synchronous triggering of a high-speed camera is met.
The embodiment of the utility model provides a synchronous system for high-speed camera, synchronizing signal can be generated after handling by outside time service information, and is different with traditional triggering mode by inside clock, carries out synchronous triggering based on time service signal, can realize accurate "while" synchronous triggering, is applicable to the synchronous acquisition application scene of a plurality of cameras of wider. When no external time service source exists, virtual time information can be generated through a clock module in the system and is coded into IRIG-B codes to time service the camera, so that the requirement of subsequent synchronous signals on PPS information is met, and relative time can be provided for the system.
The embodiment of the utility model provides a high-speed camera collection system provides time service signal and synchronizing signal through setting up synchronous system for the collection of many high-speed cameras, has solved the synchronization and the time service problem that the high-speed camera gathered the shooting, is the innovation towards high-speed camera application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of a synchronization system for a high-speed camera according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a synchronization system for a high-speed camera according to an embodiment of the present invention;
fig. 3 is a flowchart of the synchronization system for high-speed camera according to the embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
An embodiment of the utility model provides a synchronization system for high-speed camera, as shown in fig. 1, this synchronization system includes: the device comprises a decoding module 1, a processing module 2, a B code encoding module 3 and a frequency division module 4, wherein the decoding module 1 receives information input by an external time service source and decodes the information to obtain time service information; the processing module 2 is connected with the decoding module 1, receives the time service information output by the decoding module 1 and analyzes the time service information to obtain effective time; the B code coding module 3 is connected with the effective time output by the processing module 2 to carry out IRIG-B coding to obtain a time service signal; the frequency division module 4 is connected with the processing module 2, and receives the effective time obtained by the processing module 2 to perform frequency division processing to obtain a synchronous signal. Optionally, as shown in fig. 2, the synchronization system may further include an output interface unit for outputting the synchronization signal and the timing signal.
The embodiment of the utility model provides a synchronous system for high-speed camera, information decoding through setting up the decoding module and receiving outside time service source obtains the time service information, it obtains the active time to set up the analytic time service information of processing module, set up B code encoding module and frequency division module simultaneously and obtain time service signal and synchronizing signal output according to the active time, from this, this synchronous system can provide time service signal and synchronizing signal at high-speed camera image acquisition, satisfy the high accuracy trigger requirement that the high-speed camera gathered the shooting.
In an embodiment, the processing module may select an FPGA, and the FPGA may analyze the time service information according to its internal circuit design to obtain the valid time, and may specifically be implemented by any one of the existing manners. The B code encoding module can receive the effective time code and convert the effective time code into a format required by the IRIG-B time code, and generates an IRIG-B time service signal. The frequency division module can select a CD4060 fourteen-bit serial counter to realize the frequency division function, but because the CD4060 can only realize 14-level frequency division, 1-level frequency division must be added, and the frequency division can be realized by a CD4013 double-D trigger, so that the pulse per second signal generator is formed. The PPS bit information in the effective time can be subjected to frequency division by adopting the frequency division module to generate a low-frequency pulse signal suitable for timing, namely a pulse per second signal or a synchronous signal, then the pulse per second signal can be used for camera shooting triggering according to the rising edge of the pulse per second signal, the signal is limited in the period after PPS frequency division, and the image quality of each frame is guaranteed to be good under the condition of high-speed image acquisition.
In an embodiment, as shown in fig. 2, the external time service signal may include any one or more of an NTP time service source, a compass/GPS antenna, and an external B code signal, where the NTP network time service source does not have pulse-per-second information required for analyzing the synchronization signal, and needs to communicate with the decoding module after the pulse-per-second information is added to the external time service source to analyze the synchronization signal. Thus, the decoding module can be provided with an NTP decoder, a radio frequency communication module and an IRIG-B code receiving module. The NTP decoder receives RS485 second pulses sent by the second pulse source and NTP network signals sent by the NTP time service source to decode to obtain time service information; the radio frequency communication module receives a Beidou radio frequency signal output by the Beidou/GPS antenna to generate time service information; and the IRIG-B code receiving module receives an IRIG-B code TTL signal generated by an external B code module to generate time service information. Specifically, the time service information may include a year signal, a month signal, a day signal, a minute signal, a second signal, and a PPS bit signal.
In one embodiment, the synchronization system for a high speed camera further comprises: and the clock module is connected with the processing module and used for providing time information for the processing module. Specifically, when there is no external time service source or the external time service source does not work, a clock module may be further disposed in the synchronization system, and the processing module may receive information output by the clock module to generate time service information.
In one embodiment, the synchronization system for a high speed camera further comprises: and the signal amplification module is connected with the B code coding module and the frequency division module and is used for receiving the time service signal and the synchronous signal, amplifying and outputting the time service signal and the synchronous signal. Specifically, as shown in fig. 2, a signal amplifier may be disposed after the B-code encoding module and the frequency dividing module, respectively, to form a signal amplifying module, which is used to amplify the signal, so as to ensure that no attenuation error occurs when the signal is output to multiple interfaces simultaneously,
in one embodiment, as shown in fig. 2, the synchronization system for a high-speed camera further includes: and the time target display module is connected with the B code coding module and is used for receiving the time service signal output by the B code coding module to display time. Specifically, the time target display module can display time information of a subtle level for camera testing and synchronous trigger detection.
Optionally, as shown in fig. 2, for the time target display module, an LED dot matrix control unit and an LED dot matrix may be disposed therein, and the LED dot matrix control unit receives the time service signal and analyzes the time service signal to obtain time information, and the time information is displayed on the LED dot matrix. The LED lattice control unit can be based on a CPLD lattice control unit, and can also be designed according to other modes. Optionally, the time target display module may also be provided with a nixie tube driving unit and a nixie tube, and the nixie tube driving unit receives the time service signal and analyzes the time service signal to obtain time information, and the time information is displayed on the nixie tube.
In an embodiment, as shown in fig. 3, the synchronization system for a high-speed camera may generate a synchronization signal and a time service signal according to the following processes, first power on the system, initialize the system, and set system parameters; then judging whether an external time source exists or not, if so, initializing a decoding module, and decoding information provided by the external time source to produce time service information; if no external time service source exists, a virtual time service signal is generated according to a clock module in the synchronous system, and time service information is generated. The processing module can receive the time service information, extract the PPS bit information therein, generate a synchronous trigger signal after frequency division processing; meanwhile, IRIG-B coding can be performed through a B code coding module to generate a time service signal.
The embodiment of the utility model provides a synchronizing system for high-speed camera, time service time sources such as joinable satellite, network, IRIG-B external source to self can produce virtual time service signal, applicable in multiple application scene. Meanwhile, high-precision time service information is generated through the synchronous system, a PPS signal in the time service information is extracted by the processing module, and after frequency division processing, the high-speed camera can be triggered more accurately, and errors are smaller when multiple cameras shoot simultaneously.
The embodiment of the utility model provides a synchronous system for high-speed camera, unified be the IRIG-B sign indicating number back with the time service information and carry out the time service to the camera again through frequency division processing, can break through the restriction of general time service, provide the time service information of higher precision such as microsecond level. Meanwhile, a synchronization signal is generated based on PPS information in IRIG-B code information, and after frequency division and other processing, the precision is greatly improved, and the requirement of synchronous triggering of a high-speed camera is met.
The embodiment of the utility model provides a synchronous system for high-speed camera, synchronizing signal can be generated after handling by outside time service information, and is different with traditional triggering mode by inside clock, carries out synchronous triggering based on time service signal, can realize accurate "while" synchronous triggering, is applicable to the synchronous acquisition application scene of a plurality of cameras of wider. When no external time service source exists, virtual time information can be generated through a clock module in the system and is coded into IRIG-B codes to time service the camera, so that the requirement of subsequent synchronous signals on PPS information is met, and relative time can be provided for the system.
The embodiment of the utility model provides a still provide a high-speed camera collection system, this collection system include two at least high-speed cameras and any one of the above-mentioned embodiment the synchronous system for high-speed camera, synchronous system is connected to high-speed camera for receive the time service signal and the synchronizing signal of synchronous system output, high-speed camera can carry out image acquisition work under the time service signal and the synchronizing signal of receipt.
The embodiment of the utility model provides a high-speed camera collection system provides time service signal and synchronizing signal through setting up synchronous system for the collection of many high-speed cameras, has solved the synchronization and the time service problem that the high-speed camera gathered the shooting, is the innovation towards high-speed camera application.
In one embodiment, the high speed camera acquisition system further comprises: and the high-speed storage chip is connected with the high-speed camera and is used for storing the image acquired by the high-speed camera. Particularly, a storage computer can be arranged between the high-speed storage chip and the high-speed camera and used for controlling the acquisition of the high-speed camera. Optionally, four high-speed cameras can be arranged to shoot images of the same object at different angles at the same time, a synchronization system is added, shooting time errors of the 4 cameras are guaranteed to be within 20ns, and image synchronization acquisition precision is improved. And simultaneously provides high-precision time service information for the camera, and can print precise time stamps on each frame of picture.
Although the present invention has been described in detail with respect to the exemplary embodiments and the advantages thereof, those skilled in the art will appreciate that various changes, substitutions and alterations can be made to the embodiments without departing from the spirit of the invention and the scope of the invention as defined by the appended claims. For other examples, one of ordinary skill in the art will readily appreciate that the order of the process steps may be varied while maintaining the scope of the present invention.
Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.
Claims (9)
1. A synchronization system for a high speed camera, comprising: a decoding module, a processing module, a B code coding module and a frequency division module,
the decoding module receives information input by an external time service source and decodes the information to obtain time service information;
the processing module is connected with the decoding module and used for receiving the time service information output by the decoding module and analyzing the time service information to obtain effective time;
the B code coding module is connected with the effective time output by the processing module to carry out IRIG-B coding to obtain a time service signal;
the frequency division module is connected with the processing module and receives the effective time obtained by the processing module to carry out frequency division processing to obtain a synchronous signal.
2. The synchronization system for a high-speed camera according to claim 1, wherein the decoding module comprises: NTP decoder, radio frequency communication module and IRIG-B code receiving module.
3. The synchronization system for a high-speed camera according to claim 1, further comprising: and the clock module is connected with the processing module and is used for providing time information for the processing module.
4. The synchronization system for a high-speed camera according to claim 1, further comprising: and the signal amplification module is connected with the B code coding module and the frequency division module and is used for receiving the time service signal and the synchronous signal, amplifying and then outputting the time service signal and the synchronous signal.
5. The synchronization system for a high-speed camera according to claim 1, further comprising: and the time target display module is connected with the B code coding module and is used for receiving the time service signal output by the B code coding module and displaying time.
6. The synchronization system for a high-speed camera according to claim 5, wherein the time target display module comprises: the LED dot matrix control unit receives the time service signal, analyzes the time service signal to obtain time information, and displays the time information on the LED dot matrix.
7. The synchronization system for a high-speed camera according to claim 5, wherein the time target display module comprises: the nixie tube driving unit receives the time service signal, analyzes the time service signal to obtain time information, and displays the time information on the nixie tube.
8. A high-speed camera acquisition system, characterized by comprising at least two high-speed cameras and the synchronization system for the high-speed cameras according to any one of claims 1 to 7, wherein the high-speed cameras are connected with the synchronization system and used for receiving the time service signals and the synchronization signals output by the synchronization system.
9. The high speed camera acquisition system of claim 8 further comprising: and the high-speed storage chip is connected with the high-speed camera and is used for storing the image acquired by the high-speed camera.
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| CN113938613A (en) * | 2021-11-26 | 2022-01-14 | 上海徐工智能科技有限公司 | Engineering machinery user data acquisition device and method |
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| CN113938613A (en) * | 2021-11-26 | 2022-01-14 | 上海徐工智能科技有限公司 | Engineering machinery user data acquisition device and method |
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Effective date of registration: 20221201 Address after: 1st floor, No. 217-225, Hongcao South Road, Xuhui District, Shanghai, 200030 Patentee after: SHANGHAI MICROVIEW ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 100083 Beijing City, Haidian District Zhongguancun Road No. 18 smartfortune International Building, A block 9 layer Patentee before: MICROVIEW SCIENCE AND TECHNOLOGY Co.,Ltd. |