Camera remote control system
A technology of remote control system and remote control center, which is applied in the field of remote control and can solve problems such as the inability to guarantee the movement accuracy of the camera and the inconsistent number of steps
Active Publication Date: 2020-04-17
深圳市众安威视技术有限公司
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Problems solved by technology
[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a camera remote control system, which has the characteristics of ingenious design and humanized design, and effectively solves the problem of the actual number of steps of the stepping motor and the theoretically required The number of steps is inconsistent, and the camera movement accuracy cannot be guaranteed
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[0013] Regarding the aforementioned and other technical contents, features and effects of the present invention, refer to the appended Figure 1 to Figure 2 It will be apparent from the detailed description of the embodiments. The structural contents mentioned in the following embodiments are all based on the accompanying drawings of the description.
[0014] The camera remote control system includes a camera control device and a remote control center. The remote control center transmits the camera control instructions to the camera control device via the Internet, converts them into control instructions after demodulation, and transmits them to the camera control device through the internal controller of the camera control device. Output the control pulse to the stepping motor to remotely control the movement of the camera, and a pulse receiving circuit, a pulse resonance circuit, an adjustment signal calculation circuit, and a pulse adjustment output circuit are arranged bet...
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In a camera remote control system provided by the invention, a pulse receiving circuit receives the control pulse output by a controller through a photocoupler, and the control pulse is output to a pulse resonant circuit after buffering; a tunable resonant circuit performs resonance to generate a pulse frequency signal; a conditioning signal calculation circuit receives a desired stepping motor displacement signal and a measurement stepping motor displacement signal, the composite circuit composed of a triode Q4 and a triode Q5 outputs a displacement difference signal that is feedback amplified by an operational amplifier AR2, a triode Q6 and a triode Q7, and then output after LC filtering, thereby improving the precision of the difference signal; the pulse conditioning output circuit generates a modulation pulse by an oscillation circuit of the variable oscillation frequency, wherein the modulation pulse changes the modulation pulse frequency by changing the capacitance value of the varactor diode DC2 based on the magnitude of the displacement difference signal such that the displacement of the stepping motor actually generated by the control pulse is consistent with the displacement that should be generated, thereby improving the accuracy of the movement of the camera.
Description
technical field [0001] The invention relates to the technical field of remote control, in particular to a camera remote control system. Background technique [0002] Most of the traditional surveillance cameras are fixed in position, the monitoring range is limited, and it is easy to have dead spots in monitoring. With the development of technology, a pan-tilt camera monitoring system has appeared. At present, the camera remote control system usually sets a camera control device at the camera (pan-tilt control equipment), the control office is equipped with a remote control center, and the monitoring personnel of the remote control center transmit the camera control instructions to the camera control equipment through the Internet, and convert them into control instructions after demodulation, and output control pulses through the controller set inside the camera control equipment To the stepper motor to remotely control the rotation of the gimbal, and then control the movem...
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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 刘国强刘伊杰谢银玉周日师程玉添林金飞余银钟雪梅许世荣
Owner 深圳市众安威视技术有限公司