CN104349042A - Control system and control method of video camera - Google Patents
Control system and control method of video camera Download PDFInfo
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- CN104349042A CN104349042A CN201310334846.4A CN201310334846A CN104349042A CN 104349042 A CN104349042 A CN 104349042A CN 201310334846 A CN201310334846 A CN 201310334846A CN 104349042 A CN104349042 A CN 104349042A
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Abstract
The invention provides a control system and control method of a video camera. The control system of the video camera includes a remote control terminal and a video camera, which are in communication connection. The remote control terminal includes a main controller, and a key board, a first power supply module and a universal asynchronous receiver transmitter, which are connected electrically respectively with the main controller. The first power supply module is also electrically connected with the universal asynchronous receiver transmitter. The video camera includes a microprocessor, and a secondary controller, a secondary power supply module, a lens module and an OSD module, which are electrically connected with the microprocessor respectively. The second power supply module is also electrically connected with the secondary controller and the lens module respectively. The secondary controller is in communication connection with the universal asynchronous receiver transmitter. In the control system and control method of the video camera, the remote control terminal is in connection and communication with the video camera through an RS485 connection method and an RS485 protocol; and the communication distance is long, the compatibility is great and the realization cost is low.
Description
Technical field
The present invention relates to camera control field, particularly relate to a kind of control system and control method of video camera.
Background technology
Now general middle-and-high-ranking video camera product all can have OSD(screen menu type regulative mode, On Screen Display) function, and also later most of product all can have this trend.So-called OSD module is exactly on image display and video and graph compound shows word or picture, and can select to regulate these words or picture by the function button on video camera, and these words or picture some function corresponding, regulated by simple button like this, display mode just can control video camera and reaches required function intuitively.
But above-mentioned OSD module is just controlling locally through built-in button, but the installation site of general video camera is all distant from obtaining with monitor master-control room, and the number ratio of video camera is more, if it is very inconvenient that the installation site rethinking video camera controls video camera, some is also unrealistic, because a lot of dome-type camera is built-in button, shell is opened in the installation site must arriving video camera, ability regulating parameter and lens focus, and video camera is generally arranged on higher position, general user does not possess work high above the ground ability, certain danger is there is when later stage adjustment parameter.
Based on above reason, have special automatic focus on the market and be integrated with the video camera of Long-distance Control, control line based on the connection mode of RS485, the protocol realization communication of being arranged by both sides.But the price of these video cameras all costly, not having integrated protocol for some and have again the video camera of OSD module cannot Long-distance Control.
Summary of the invention
The object of the present invention is to provide a kind of control system of video camera, achieve the control of the module such as OSD module, camera lens module of video camera, easy to operate, realize cost low, compatible good.
Another object of the present invention is to the control method that a kind of video camera is provided, OSD module or the camera lens module of video camera is controlled by external remote control terminal, the method is easy to operate, realize cost low, compatible good, simultaneously also by C programmer to the Long-distance Control not having the video camera of integrated communication agreement to realize the modules such as its OSD module, camera lens module.
For achieving the above object, the invention provides a kind of control system of video camera, comprise: the remote control terminal of communication connection and video camera, described remote control terminal comprises: master controller, the keyboard is electrically connected with described master controller, and the first power module of being electrically connected of described master controller and the UART Universal Asynchronous Receiver Transmitter that is electrically connected with described master controller, and described first power module is also electrically connected with UART Universal Asynchronous Receiver Transmitter; Described video camera comprises: microprocessor, secondary controller is electrically connected with described microprocessor, and described microprocessor be electrically connected second source module, and the camera lens module that is electrically connected of described microprocessor and the OSD module that is electrically connected with described microprocessor, described second source module is also electrically connected with secondary controller and camera lens module respectively, and described time controller is connected with described UART Universal Asynchronous Receiver Transmitter electrical communication.
Described keyboard comprises several button; The operating system of described microprocessor is based on C language; Described camera lens module comprises camera lens and two stepping motors, the rotation of these two stepping motors of described Microprocessor S3C44B0X, thus the zoom or the zoom that realize camera lens.
Described remote control terminal and described video camera are communicated to connect by RS485 connection mode.
The present invention also provides a kind of control method of video camera, comprises the following steps:
Step 1, provide remote control terminal and video camera, described remote control terminal comprises: master controller, the keyboard be electrically connected with described master controller and the UART Universal Asynchronous Receiver Transmitter be electrically connected with described master controller, described video camera comprises: microprocessor, secondary controller is electrically connected with described microprocessor, the camera lens module is electrically connected with described microprocessor and the OSD module be electrically connected with described microprocessor, and UART Universal Asynchronous Receiver Transmitter and secondary controller communicate to connect by employing cable;
Step 2, on the keyboard of remote control terminal, trigger corresponding instruction, by the master controller of this remote control terminal by corresponding for this instruction morphing one-tenth transmission signal order, then by the UART Universal Asynchronous Receiver Transmitter of this remote control terminal, this transmission signal order is converted to RS485 signal;
This RS485 signal is sent to the secondary controller of video camera by the UART Universal Asynchronous Receiver Transmitter of step 3, remote control terminal, and the secondary controller of described video camera receives this RS485 signal;
This RS485 signal is converted to RS232 signal by the secondary controller of step 4, described video camera, then by the microprocessor of this video camera, this RS232 signal is converted to general CMOS low and high level signal;
The microprocessor of step 5, described video camera is according to the OSD module of this CMOS low and high level signal controlling video camera or control camera lens module.
Described remote control terminal also comprises one first power module, and described first power module is electrically connected with master controller and UART Universal Asynchronous Receiver Transmitter respectively, and then provides working power.
Described keyboard comprises several button, the instruction needed for being selected by button in described step 1.
Described video camera also comprises a second source module, and described second source module is electrically connected with microprocessor, secondary controller and camera lens module respectively, and then provides working power.
The operating system of described microprocessor is based on C language.
Described camera lens module comprises camera lens and two stepping motors, the rotation of these two stepping motors of described Microprocessor S3C44B0X, thus the zoom or the zoom that realize camera lens.
The communication cable mode of the UART Universal Asynchronous Receiver Transmitter of described remote control terminal and the secondary controller of video camera is RS485 connection mode.
Beneficial effect of the present invention: in the control system of video camera of the present invention and control method, external remote control terminal is by RS485 connection mode and video camera line, both adopt RS485 agreement at communication, communication distance is far away, while can Long-distance Control being realized, compatible good, make video camera can compatibility general or special agreement on the market, the method is easy to operate, realize cost low, control precision is high, stepping motor is adopted to control camera lens, the problem using direct current machine to cause control precision inadequate on the market can be solved well, also realize its OSD module by C programmer to there is no integrated communication agreement video camera simultaneously, the Long-distance Control of the modules such as camera lens module.
In order to further understand feature of the present invention and technology contents, refer to following detailed description for the present invention and accompanying drawing, but accompanying drawing only provides reference and explanation use, is not used for being limited the present invention.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention describe in detail, will make technical scheme of the present invention and other beneficial effect apparent.
In accompanying drawing,
Fig. 1 is the hardware module lab diagram of the control system of video camera of the present invention;
Fig. 2 is the flow chart of the control method of video camera of the present invention;
Fig. 3 is the change schematic diagram of signal transduction process in the control method of video camera of the present invention.
Embodiment
For further setting forth the technological means and effect thereof that the present invention takes, be described in detail below in conjunction with the preferred embodiments of the present invention and accompanying drawing thereof.
Refer to Fig. 1, the invention provides a kind of control system of video camera, comprise: the remote control terminal 20 of communication connection and video camera 40, described remote control terminal 20 comprises: master controller 22, the keyboard 24 is electrically connected with described master controller 22, and the first power module 28 of being electrically connected of described master controller 22 and the UART Universal Asynchronous Receiver Transmitter 26 that is electrically connected with described master controller 22, described first power module 28 is also electrically connected with UART Universal Asynchronous Receiver Transmitter 26, and then provides power supply to master controller 22 and UART Universal Asynchronous Receiver Transmitter 26, described video camera 40 comprises: microprocessor 42, the secondary controller 44 be electrically connected with described microprocessor 42, the second source module 48 be electrically connected with described microprocessor 42, the camera lens module 47 be electrically connected with described microprocessor 42, and the OSD module 46 to be electrically connected with described microprocessor 42, described second source module 48 is also electrically connected with secondary controller 44 and camera lens module 47 respectively, and then give time controller 44, camera lens module 47 and microprocessor 42 provide working power, and power to OSD module 46 by microprocessor 42, described time controller 44 communicates to connect with UART Universal Asynchronous Receiver Transmitter 26, read the RS485 signal that UART Universal Asynchronous Receiver Transmitter 26 sends over.Described microprocessor 42 is the microprocessor of a high speed, processing speed is fast, and its operating system is preferably based on C language, thus can more compatible there is no the video camera of integrated communication agreement, and then realize the Long-distance Control of each module of video camera 40, as OSD module 46, camera lens module 47 etc.
Described keyboard 24 comprises several button (not shown).Described remote control terminal 20 is RS485 mode with the communication cable mode of video camera 40, and communication distance is far away, can reach 2000 meters.When adopting this communication cable mode to connect multiple cameras 40, every platform video camera 40 can select different address codes to realize communication, and address code reaches 255, can realize the control of multiple cameras 40; Meanwhile, the agreements such as PELCO-D, PELCO-P that video camera 40 compatibility is general on the market can be made, simultaneously the also distinctive agreement of compatible individual businesses, regulate the focal length of osd function and camera lens quickly and easily.Described camera lens module 47 comprises camera lens and two stepping motors, and described microprocessor 42 controls the rotation of these two stepping motors, thus realizes zoom or the zoom of camera lens; Described camera lens module 47 adopts two stepping motors (not shown) to control, and can solve the problem using direct current machine to cause control precision inadequate on the market well.
Refer to Fig. 3, corresponding instruction is triggered by button, described master controller 22 is by corresponding for this instruction morphing one-tenth transmission signal order and send to UART Universal Asynchronous Receiver Transmitter 26, this transmission signal order is converted to RS485 signal and sends to secondary control device 44 by described UART Universal Asynchronous Receiver Transmitter 26, described time controller 44 receives this RS485 signal and is converted to RS232 signal, described time this RS232 signal is sent to microprocessor 42 by controller 44, this RS232 signal is converted to general CMOS low and high level signal by described microprocessor 42, and according to the various functions of this CMOS low and high level signal controlling video camera 40, as OSD module 46, the function of the modules such as camera lens module 47.
Refer to Fig. 2 to Fig. 3, the present invention also provides a kind of control method of video camera, comprises the following steps:
Step 1, provide remote control terminal 20 and video camera 40, described remote control terminal 20 comprises: master controller 22, the keyboard 24 be electrically connected with described master controller 22 and the UART Universal Asynchronous Receiver Transmitter 26 be electrically connected with described master controller 22, described video camera 40 comprises: microprocessor 42, secondary controller 44 is electrically connected with described microprocessor 42, the camera lens module 47 is electrically connected with described microprocessor 42 and the OSD module 46 be electrically connected with described microprocessor 42, UART Universal Asynchronous Receiver Transmitter 26 and secondary controller 44 communicate to connect by employing cable.
Described remote control terminal 20 also comprises one first power module 28, and described first power module 28 is electrically connected with master controller 22 and UART Universal Asynchronous Receiver Transmitter 26 respectively, and then provides working power to master controller 22 and UART Universal Asynchronous Receiver Transmitter 26.Described keyboard 24 comprises several button (not shown), can select required service by this several button.
Described video camera 40 also comprises a second source module 48, described second source module 48 is electrically connected with microprocessor 42, secondary controller 44 and camera lens module 47 respectively, and then provide working power to microprocessor 42, secondary controller 44, camera lens module 47 and microprocessor 42, and power to OSD module 46 by microprocessor 42, described controller 44, for communicating to connect with UART Universal Asynchronous Receiver Transmitter 26, reads the RS485 signal that UART Universal Asynchronous Receiver Transmitter 26 sends over.Described microprocessor 42 is the microprocessor of a high speed, processing speed is fast, and its operating system is preferably based on C language, thus can more compatible there is no the video camera of integrated communication agreement, and then realize the Long-distance Control of each module of video camera 40, as OSD module 46, camera lens module 47 etc.Described camera lens module 47 comprises camera lens and two stepping motors, and described microprocessor 42 controls the rotation of these two stepping motors, thus realizes zoom or the zoom of camera lens; Described camera lens module 47 adopts two stepping motors (not shown) to control, and can solve the problem using direct current machine to cause control precision inadequate on the market well.
Described remote control terminal 20 is RS485 mode with the communication cable mode of video camera 40, and communication distance is far away, can reach 2000 meters.When adopting this communication cable mode to connect multiple cameras 40, every platform video camera 40 can select different address codes to realize communication, and address code reaches 255, can realize the control of multiple cameras 40; Meanwhile, the agreements such as PELCO-D, PELCO-P that video camera 40 compatibility is general on the market can be made, simultaneously the also distinctive agreement of compatible individual businesses, regulate video camera various functions quickly and easily, as the focal length etc. of osd function, camera lens.
Step 2, on the keyboard 24 of remote control terminal 20, trigger corresponding instruction, by the master controller 22 of this remote control terminal 20 by corresponding for this instruction morphing one-tenth transmission signal order, then by the UART Universal Asynchronous Receiver Transmitter 26 of this remote control terminal 20, this transmission signal order is converted to RS485 signal.
This RS485 signal is converted to RS232 signal by the secondary controller 44 of step 3, described video camera 40, then by the microprocessor 42 of this video camera, this RS232 signal is converted to general CMOS low and high level signal.
The RS485 signal received is converted to the RS232 signal that microprocessor 42 can identify by described controller 44, and this RS232 signal is sent to microprocessor 42, described microprocessor 42 is decoded to this RS232 signal, is converted to general CMOS low and high level signal.
The microprocessor 42 of step 4, described video camera 40 is according to the OSD module 46 of this CMOS low and high level signal controlling video camera 40 or control camera lens module 47.
Described microprocessor 42 is according to the various functions of this CMOS low and high level signal controlling video camera 40.Concrete, described microprocessor 42 is according to the OSD module 46 of the CMOS low and high level signal controlling video camera 40 obtained of decoding or control camera lens module 47, completes corresponding control.
In sum, in the control system of video camera of the present invention and control method, external remote control terminal is by RS485 connection mode and video camera line, both adopt RS485 agreement at communication, communication distance is far away, while can Long-distance Control being realized, compatible good, make video camera can compatibility general or special agreement on the market, the method is easy to operate, realize cost low, control precision is high, stepping motor is adopted to control camera lens, the problem using direct current machine to cause control precision inadequate on the market can be solved well, also realize its OSD module by C programmer to there is no integrated communication agreement video camera simultaneously, the Long-distance Control of the modules such as camera lens module.
The above, for the person of ordinary skill of the art, can make other various corresponding change and distortion according to technical scheme of the present invention and technical conceive, and all these change and be out of shape the protection range that all should belong to the claims in the present invention.
Claims (10)
1. the control system of a video camera, it is characterized in that, comprise: the remote control terminal of communication connection and video camera, described remote control terminal comprises: master controller, the keyboard is electrically connected with described master controller, and the first power module of being electrically connected of described master controller and the UART Universal Asynchronous Receiver Transmitter that is electrically connected with described master controller, and described first power module is also electrically connected with UART Universal Asynchronous Receiver Transmitter; Described video camera comprises: microprocessor, secondary controller is electrically connected with described microprocessor, and described microprocessor be electrically connected second source module, and the camera lens module that is electrically connected of described microprocessor and the OSD module that is electrically connected with described microprocessor, described second source module is also electrically connected with secondary controller and camera lens module respectively, and described time controller is connected with described UART Universal Asynchronous Receiver Transmitter electrical communication.
2. the control system of video camera as claimed in claim 1, it is characterized in that, described keyboard comprises several button; The operating system of described microprocessor is based on C language; Described camera lens module comprises camera lens and two stepping motors, the rotation of these two stepping motors of described Microprocessor S3C44B0X, thus the zoom or the zoom that realize camera lens.
3. the control system of video camera as claimed in claim 1, it is characterized in that, described remote control terminal and described video camera are communicated to connect by RS485 connection mode.
4. a control method for video camera, is characterized in that, comprises the following steps:
Step 1, provide remote control terminal and video camera, described remote control terminal comprises: master controller, the keyboard be electrically connected with described master controller and the UART Universal Asynchronous Receiver Transmitter be electrically connected with described master controller, described video camera comprises: microprocessor, secondary controller is electrically connected with described microprocessor, the camera lens module is electrically connected with described microprocessor and the OSD module be electrically connected with described microprocessor, and UART Universal Asynchronous Receiver Transmitter and secondary controller communicate to connect by employing cable;
Step 2, on the keyboard of remote control terminal, trigger corresponding instruction, by the master controller of this remote control terminal by corresponding for this instruction morphing one-tenth transmission signal order, then by the UART Universal Asynchronous Receiver Transmitter of this remote control terminal, this transmission signal order is converted to RS485 signal;
This RS485 signal is sent to the secondary controller of video camera by the UART Universal Asynchronous Receiver Transmitter of step 3, remote control terminal, and the secondary controller of described video camera receives this RS485 signal;
This RS485 signal is converted to RS232 signal by the secondary controller of step 4, described video camera, then by the microprocessor of this video camera, this RS232 signal is converted to general CMOS low and high level signal;
The microprocessor of step 5, described video camera is according to the OSD module of this CMOS low and high level signal controlling video camera or control camera lens module.
5. the control method of video camera as claimed in claim 4, it is characterized in that, described remote control terminal also comprises one first power module, and described first power module is electrically connected with master controller and UART Universal Asynchronous Receiver Transmitter respectively, and then provides working power.
6. the control method of video camera as claimed in claim 4, it is characterized in that, described keyboard comprises several button, the instruction needed for being selected by button in described step 1.
7. the control method of video camera as claimed in claim 4, it is characterized in that, described video camera also comprises a second source module, and described second source module is electrically connected with microprocessor, secondary controller and camera lens module respectively, and then provides working power.
8. the control method of video camera as claimed in claim 4, it is characterized in that, the operating system of described microprocessor is based on C language.
9. the control method of video camera as claimed in claim 4, it is characterized in that, described camera lens module comprises camera lens and two stepping motors, the rotation of these two stepping motors of described Microprocessor S3C44B0X, thus the zoom or the zoom that realize camera lens.
10. the control method of video camera as claimed in claim 4, it is characterized in that, the communication cable mode of the UART Universal Asynchronous Receiver Transmitter of described remote control terminal and the secondary controller of video camera is RS485 connection mode.
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| CN201310334846.4A CN104349042A (en) | 2013-08-02 | 2013-08-02 | Control system and control method of video camera |
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| CN201310334846.4A CN104349042A (en) | 2013-08-02 | 2013-08-02 | Control system and control method of video camera |
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| CN104349042A true CN104349042A (en) | 2015-02-11 |
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| CN201310334846.4A Pending CN104349042A (en) | 2013-08-02 | 2013-08-02 | Control system and control method of video camera |
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| CN107835358A (en) * | 2017-10-20 | 2018-03-23 | 狼天科技（深圳）有限公司 | The wireless control method and system of a kind of camera |
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