CN202713477U - Current phase compensation system for camera signal lamp - Google Patents
Current phase compensation system for camera signal lamp Download PDFInfo
- Publication number
- CN202713477U CN202713477U CN201220444959.0U CN201220444959U CN202713477U CN 202713477 U CN202713477 U CN 202713477U CN 201220444959 U CN201220444959 U CN 201220444959U CN 202713477 U CN202713477 U CN 202713477U
- Authority
- CN
- China
- Prior art keywords
- synchronous
- signal
- phase compensation
- current phase
- compensation system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Studio Devices (AREA)
Abstract
The utility model discloses a current phase compensation system for a camera signal lamp. The system comprises a power supply, an AC synchronizing signal emission unit, an AC synchronizing signal control unit and AC synchronizing signal execution unit, the AC synchronizing signal emission unit is connected with the power supply, an output end of the AC synchronizing signal emission unit is connected with an input end of the AC synchronizing signal control unit, and the AC synchronizing signal control unit is connected with the AC synchronizing signal execution unit. By adopting the abovementioned technical scheme, the current phase compensation system for the camera signal lamp can realize synchronization of image signal acquisition and an AC electrical signal of a camera, can ensure brightness equalization in a video or an image, the precision of shooting is high, and the requirement of an electronic police snapshot system is well satisfied. The current phase compensation system for a camera signal lamp is simple in structure and convenient to operate, facilitating popularization and application.
Description
Technical field
The utility model relates to and is applied to protection and monitor field, particularly a kind of camera signal lamp current Phase Compensation System.
Background technology
In the high-definition electronic police capturing system, because of evidence obtaining requirement violating the regulations, in the picture that video camera is captured signal lamp must be arranged.The engaged lamp is owing to be to adopt interchange electrically driven (operated) at present, the brightness meeting is done cyclic variation because of the variation of ac power frequency, signal lamp is sometimes darker, sometimes do not work, these brightness change naked eyes and can't distinguish, but the high-definition electronic police capturing system just might be captured the situation that signal lamp is dark or do not work, thereby impact evidence obtaining violating the regulations.
The utility model content
The purpose of this utility model is, a kind of camera signal lamp current Phase Compensation System is provided.It can guarantee that signal lamp is in suitable luminance state in the picture that video camera captures.
The technical solution of the utility model: a kind of camera signal lamp current Phase Compensation System, it is characterized in that: comprise the AC power identical with the signal lamp power supply, AC synchronous signal transmitter unit, AC synchronous signaling control unit and AC synchronous signal execution unit, AC synchronous signal transmitter unit connects power supply, the output of AC synchronous signal transmitter unit connects the input of AC synchronous signaling control unit, and the AC synchronous signaling control unit connects the AC synchronous signal execution unit.
In the aforesaid camera signal lamp current Phase Compensation System, described AC synchronous signal transmitter unit comprises the AC/DC power supply adaptor for the synchronous square-wave signal of output and AC power.
In the aforesaid camera signal lamp current Phase Compensation System, described AC synchronous signaling control unit comprises light-coupled isolation transducer and FPGA, the input of light-coupled isolation transducer connects AC synchronous signal transmitter unit, the output of light-coupled isolation transducer connects FPGA, and the FPGA output connects the AC synchronous signal execution unit.
In the aforesaid camera signal lamp current Phase Compensation System, described AC synchronous signal execution unit comprises AFE, and AFE connects CCD.
In the aforesaid camera signal lamp current Phase Compensation System, described AC synchronous signal transmitter unit, AC synchronous signaling control unit and AC synchronous signal execution unit all are located at video camera inside.
Compared with prior art, the utility model links together by AC power, AC synchronous signal transmitter unit, AC synchronous signaling control unit and AC synchronous signal execution unit and has consisted of a kind of camera signal lamp current Phase Compensation System.The square-wave signal that the emission of AC synchronous signal transmitter unit is synchronous with the 220V AC power, the AC synchronous signaling control unit receives square-wave signal by inner sequential generation IMAQ triggering signal, the AC synchronous signal execution unit receives the IMAQ triggering signal, the CCD chip that drives front end gathers a two field picture analog signal, then convert digital signal to by inner A/D and output to the AC synchronous signaling control unit, finish an image frame grabber.Adopt above-mentioned technical scheme, the utility model can realize the picture signal collection of video camera and ac signal synchronously, can guarantee the luminance proportion in video or the image, it is high to take precision, has satisfied well the requirement of electric police grasp shoot system.The utility model is simple in structure, and is easy to operate, easy to utilize.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of an embodiment of the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.A kind of camera signal lamp current Phase Compensation System, consist of as shown in Figure 1 and Figure 2, comprise the AC power identical with the signal lamp power supply, AC synchronous signal transmitter unit, AC synchronous signaling control unit and AC synchronous signal execution unit, AC synchronous signal transmitter unit connects power supply, the output of AC synchronous signal transmitter unit connects the input of AC synchronous signaling control unit, and the AC synchronous signaling control unit connects the AC synchronous signal execution unit.
AC synchronous signal transmitter unit comprises the AC/DC power supply adaptor that changes synchronous square-wave signal for output and AC power.
The AC synchronous signaling control unit comprises light-coupled isolation transducer and FPGA, and the input of light-coupled isolation transducer connects AC synchronous signal transmitter unit, and the output of light-coupled isolation transducer connects FPGA, and the FPGA output connects the AC synchronous signal execution unit.
The AC synchronous signal execution unit comprises AFE, and AFE connects CCD.
AC synchronous signal transmitter unit, AC synchronous signaling control unit and AC synchronous signal execution unit all are located at video camera inside.
FPGA, i.e. field programmable gate array, by the local array that many small logical blocks form, the connection between logical block realizes that by the interconnection of the wiring channel around it logical block and wiring channel can be by user's situ configuration.Used FPGA can provide 720～5392 triggers and 6144～24576 RAM, and several speed grade such as the long-pending 50ns of 30ns, 40ns are provided, and can adapt to the signal processing speed of 18～105MHz.In addition, sequential can be controlled in FPGA inside.
AFE, i.e. AFE (analog front end), its operation principle is: according to the mode of operation of configuration, the CCD that inner timing control unit produces sequential that this mode of operation requires drives signal, the driven CCD outputting analog signal, and gather this analog signal, convert digital signal to by inner AD.
As shown in Figure 2, the AC/DC power supply adaptor of AC synchronous signal transmitter unit provides video camera DC12V power supply, the 5V square-wave signal of simultaneously output and the synchronous 50hz of AC220V AC power, the input of access video camera, the light-coupled isolation transducer through being located at video camera inside changes into the FPGA circuit that the 3.3V square-wave signal is input to video camera.
As shown in Figure 2, the FPGA of the AC synchronous signaling control unit 3.3V square-wave signal that the light-coupled isolation transducer transforms that receives to hang oneself, frame per second signal according to current video camera, the IMAQ triggering signal that FPGA internal control timing sequence generating is identical with video camera frame per second signal starts the image that AFE gathers a frame CCD.Because the frequency of the 50hz AC signal of electrical network is shaken up and down, when camera shutter was lower than 1ms, noticeable light and shade can appear in image to be changed.For this phenomenon, when FPGA triggers at every frame, all the 50hz AC signal is approached one by one, the variation of the time for exposure of frame is less before and after guaranteeing, be unlikely to cause the noticeable light and shade of image to change, because at successive adjustment, guaranteed that also the triggering collection of AFE is unlikely to lose synchronously with the AC AC signal simultaneously.
As shown in Figure 2, AFE receives the IMAQ triggering signal from FPGA, and the sequential CCD drive CCD by inside exports a frame CCD analog picture signal, converts a frame of digital signal to by inner A/D and outputs to FPGA, finishes an image frame grabber.
Operation principle of the present utility model: (signal lamp adopts the electric main of 220V to the emission of AC/DC power supply adaptor usually with AC power, the AC power here also adopts identical electric main) synchronous square-wave signal, FPGA receives square-wave signal, send the IMAQ triggering signal by inner sequential, AFE receives the IMAQ triggering signal, the CCD chip that drives front end gathers a two field picture analog signal, then convert digital signal to by inner A/D and output to FPGA, finish an image frame grabber.Adopt above-mentioned technical scheme, the utility model can realize the picture signal collection of video camera and ac signal synchronously, can guarantee the luminance proportion in video or the image, it is high to take precision, has satisfied well the requirement of electric police grasp shoot system.The utility model is simple in structure, and is easy to operate, easy to utilize.
Claims (5)
1. camera signal lamp current Phase Compensation System, it is characterized in that: comprise the AC power identical with the signal lamp power supply, AC synchronous signal transmitter unit, AC synchronous signaling control unit and AC synchronous signal execution unit, AC synchronous signal transmitter unit connects AC power, the output of AC synchronous signal transmitter unit connects the input of AC synchronous signaling control unit, and the AC synchronous signaling control unit connects the AC synchronous signal execution unit.
2. camera signal lamp current Phase Compensation System according to claim 1 is characterized in that: described AC synchronous signal transmitter unit comprises the AC/DC power supply adaptor for the synchronous square-wave signal of output and AC power.
3. camera signal lamp current Phase Compensation System according to claim 1, it is characterized in that: described AC synchronous signaling control unit comprises light-coupled isolation transducer and FPGA, the input of light-coupled isolation transducer connects AC synchronous signal transmitter unit, the output of light-coupled isolation transducer connects FPGA, and the FPGA output connects the AC synchronous signal execution unit.
4. camera signal lamp current Phase Compensation System according to claim 1, it is characterized in that: described AC synchronous signal execution unit comprises AFE, AFE connects CCD.
5. each described camera signal lamp current Phase Compensation System according to claim 1-4, it is characterized in that: described AC synchronous signal transmitter unit, AC synchronous signaling control unit and AC synchronous signal execution unit all are located at video camera inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220444959.0U CN202713477U (en) | 2012-09-03 | 2012-09-03 | Current phase compensation system for camera signal lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220444959.0U CN202713477U (en) | 2012-09-03 | 2012-09-03 | Current phase compensation system for camera signal lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202713477U true CN202713477U (en) | 2013-01-30 |
Family
ID=47593731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220444959.0U Expired - Lifetime CN202713477U (en) | 2012-09-03 | 2012-09-03 | Current phase compensation system for camera signal lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202713477U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106062850A (en) * | 2014-03-10 | 2016-10-26 | 日产自动车株式会社 | Traffic light detection device and traffic light detection method |
| CN109756650A (en) * | 2018-12-19 | 2019-05-14 | 刘咏晨 | Smart city camera frame synchornization method based on network wave triggering |
| CN111508242A (en) * | 2020-04-30 | 2020-08-07 | 云南金隆伟业电子有限公司 | Synchronous control sending method and device for radio stroboscopic signal lamp |
| CN113409602A (en) * | 2020-03-17 | 2021-09-17 | 云南金隆伟业电子有限公司 | Variable-frequency display road traffic signal lamp |
-
2012
- 2012-09-03 CN CN201220444959.0U patent/CN202713477U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106062850A (en) * | 2014-03-10 | 2016-10-26 | 日产自动车株式会社 | Traffic light detection device and traffic light detection method |
| CN106062850B (en) * | 2014-03-10 | 2018-04-06 | 日产自动车株式会社 | Signal machine detecting device and semaphore detection method |
| CN109756650A (en) * | 2018-12-19 | 2019-05-14 | 刘咏晨 | Smart city camera frame synchornization method based on network wave triggering |
| CN113409602A (en) * | 2020-03-17 | 2021-09-17 | 云南金隆伟业电子有限公司 | Variable-frequency display road traffic signal lamp |
| CN111508242A (en) * | 2020-04-30 | 2020-08-07 | 云南金隆伟业电子有限公司 | Synchronous control sending method and device for radio stroboscopic signal lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202713477U (en) | Current phase compensation system for camera signal lamp | |
| CN103442486B (en) | High-luminance LED strobe lamp | |
| CN101931755B (en) | Modulated light filtering device for face recognition and filtering method | |
| CN106131419B (en) | It is a kind of for synchronizing the method and system and virtual reality system of multiple wireless camera equipment | |
| CN203012961U (en) | Video detection night snapshot effect enhancing system and electronic police and gate system | |
| CN203608406U (en) | Energy-saving LED fill light | |
| CN101227625A (en) | Stereoscopic picture processing equipment using FPGA | |
| CN203537607U (en) | High-luminance LED strobe lamp | |
| JP2012255830A (en) | Imaging devices and imaging method | |
| CN204156935U (en) | Smart mobile phone self-timer | |
| CN101751783A (en) | Automatic recording system for vehicles running red light | |
| CN201388319Y (en) | LED light source control device capable of multiple synchronization | |
| CN102801921B (en) | Bayonet camera | |
| CN102170345B (en) | High definition camera self-adaption digitization external synchronization method | |
| CN104869344B (en) | The method and apparatus that MIPI signal COMMAND functions are realized based on FPGA | |
| CN201440690U (en) | Dual-CCD monitoring camera and monitoring system | |
| CN102201168A (en) | Power frequency synchronizer based traffic signal intellisense service system | |
| CN204334741U (en) | The light control device of image capturing mechanism | |
| CN201709003U (en) | Modulated-light filtering device based on infrared LED | |
| KR20150091578A (en) | LED lighting control device for high speed photography | |
| CN102508392A (en) | Method and equipment for synchronizing analog video camera and light-emitting diode (LED) light compensation lamp | |
| CN105072316B (en) | Realize the CCTV camera of real-time display running status function | |
| CN204761557U (en) | Camera light filling lamp control circuit | |
| CN201418125Y (en) | A 24-hou network camera | |
| CN203289537U (en) | Video synchronization type LED stroboscope lamp circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310013 North Tower, lotus flower business center, No. 333, Lianhua street, Xihu District, Hangzhou, Zhejiang, 5 Patentee after: Infinova (Hangzhou) Information System Co.,Ltd. Address before: 310013 room 601-605, A building, A building, Zhejiang University, Xixi Road, Hangzhou, Hangzhou, Zhejiang Patentee before: HANGZHOU SHARP WISDOM TECHNOLOGY CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |