System and method for remotely triggering shutter of photographic apparatus based on pulse-width modulation signal

A technology of pulse width modulation signal and camera equipment, which is applied in signal transmission system, TV system components, image communication, etc. It can solve the problem that it is impossible to realize the shutter triggering beyond the visual distance of 5000 meters, and achieve light weight, Compact and cost-effective

Active Publication Date: 2012-12-12
天津全华时代航天科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the remote control shutters of all photographic equipment on the market mostly use wired remote control mode or infrared remote control mode. Wired or infrared remote control is more practical for short-distance

Method used

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  • System and method for remotely triggering shutter of photographic apparatus based on pulse-width modulation signal
  • System and method for remotely triggering shutter of photographic apparatus based on pulse-width modulation signal
  • System and method for remotely triggering shutter of photographic apparatus based on pulse-width modulation signal

Examples

Experimental program
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Effect test

example 1

[0034] Such as figure 2 As shown, the pulse width modulation signal generator and the wireless transmitting module are aircraft model remote controllers, and the Japanese Futaba 10C remote controller can be used specifically. The remote controller can generate a period of 20ms, and the high level duration is 0.5 milliseconds to 2.5 milliseconds. The pulse width signal of milliseconds; the pulse width signal is sent out as a wireless signal after modulation, and the receiver uses the R6208SB receiver matched with the Japanese Futaba 10C remote control. The pulse width modulation signal sent by the remote control is received by the R6208SB receiver, and the R6208SB receiver The output end is connected with the I / O port of the single-chip microcomputer, and this pulse width modulation signal is transmitted to the central processing unit of the single-chip microcomputer. Pulse width range, and real-time detection of the high-level pulse width of the input pulse width signal throu...

example 2

[0036] Such as image 3As shown, in this example, a pulse width modulation signal trigger is added, which is a ground station computer installed with control operation software. The pulse width modulation signal generator is an unmanned aerial vehicle autopilot. radio station. The ground station computer sends a trigger signal to the camera equipment, and the signal is modulated and then sent wirelessly through the data transmission station connected to the computer RS232 serial port; the wireless receiving module is another data transmission station, and the data transmission station receives this signal. The wireless signal is demodulated, and then the signal is transmitted to the UAV autopilot through the RS232 interface. The autopilot receives this signal and generates a period of 20ms, and the high level lasts from 0.5ms to 2.5ms. The output of the autopilot is connected to the The I / O of the single-chip microcomputer is connected, and the pulse width signal is transmitt...

example 3

[0038] In this example, there is no need for the pulse width modulation signal trigger, wireless transmitting module, and wireless receiving module described in Example 2. It is only necessary to connect the pulse width signal outlet of the UAV autopilot to the I / O interface of the single-chip microcomputer, through Program the UAV autopilot in advance, so that the autopilot automatically generates a pulse width modulation signal at a specific time or at a specific distance, and transmits this pulse width signal to the central processing unit of the microcontroller through the input I / O of the microcontroller Perform processing and identification; after the identification is confirmed, the microcontroller generates a high-level signal from another I / O port, and transmits the high-level signal to the optocoupler. After the optocoupler receives the high-level signal, the optocoupler's The output controls the shutter state of the camera device. This kind of scheme is automatic op...

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Abstract

The invention relates to a system and method for remotely triggering a shutter of a photographic apparatus based on a pulse-width modulation signal. The system comprises a pulse-width modulation signal generator, a wireless transmitting module, a wireless receiving module, a single chip microcomputer, an optical coupler and a photographic apparatus; the pulse-width modulation signal generator is connected with the wireless transmitting module; wireless communication between the wireless transmitting module and the wireless receiving module is performed to transmit the pulse-width modulation signal; the wireless receiving module receives the pulse-width modulation signal and transmits the pulse-width modulation signal to the single chip microcomputer to identify and judge; the single chip microcomputer is connected with the optical coupler; and the optical coupler is connected with a shutter control line of the photographic apparatus so as to trigger the shutter of the photographic apparatus to act. The system and the method are less affected by barriers and the property of a control signal in resisting interference is high, so that the purpose of remotely triggering the photographic apparatus is fulfilled; the product provided by the invention is compact in structure, small in size, light in weight and very beneficial to the carrying of a light unmanned aerial vehicle, thereby providing a guarantee to the remote control of an aerial photo of the light unmanned aerial vehicle.

Description

technical field [0001] The invention belongs to the technical field of remote control of unmanned aerial vehicle camera equipment, and in particular relates to a system and method for remotely triggering the shutter of camera equipment based on a pulse width modulation signal. Background technique [0002] At present, the remote control shutters of all photographic equipment on the market mostly use wired remote control mode or infrared remote control mode. Wired or infrared remote control is more practical for short-distance shutter triggering, but it is impossible to trigger the shutter of photographic equipment at a distance of more than 1000 meters. It is even more impossible to achieve a shutter trigger beyond the visual distance of 5,000 meters. [0003] Through the retrieval of domestic published patent documents, only a kind of radio remote control starting camera shutter device whose publication number is CN85200948 is retrieved, which includes a radio signal transm...

Claims

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Application Information

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IPC IPC(8): H04N5/232G08C17/00
Inventor 刘旭沈庆续
Owner 天津全华时代航天科技发展有限公司
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