PWM signal self-adaptive Nex-7 camera shutter release
A PWM signal and camera shutter technology, applied in the field of drones, can solve the problems of increased weight, unsupported, difficult to guarantee accuracy, etc., and achieve the effect of light weight
Inactive Publication Date: 2014-04-23
天津全华时代航天科技发展有限公司
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AI Technical Summary
Problems solved by technology
At present, aerial photography usually uses the transmission servo to press the shutter button, because the UAV needs to increase the camera mount of the servo, resulting in an increase in weight
[0003] Adopting the fixed seat method of transmission is not only not conducive to the mass production of drones, but also because the rocker stroke of the steering gear is inconsistent, the installation of each product needs to re-adjust the mechanical structure, the adjustment time is long, and the accuracy is difficult to guarantee.
In addition, although some drones use the Nex-7 camera shutter cable, they have high requirements for the power supply voltage, the voltage cannot exceed 6V, and the voltage of 7.2-8.4V is not supported, otherwise the chip will be burned, and it cannot support self-adaptation The PWM signal output by the autopilot makes it unusable on some autopilots
Method used
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[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.
[0015] An adaptive PWM signal Nex-7 camera shutter line, which is composed of a voltage stabilizing circuit, a single-chip microcomputer, and an infrared LED. Connect the infrared LED.
[0016] After the circuit passes through the voltage regulator circuit, it provides a voltage of no more than 5.5V to the single-chip microcomputer. The single-chip microcomputer reads the pulse length of the PWM signal through AD sampling, and outputs a pulse signal in accordance with the Nex-7 remote control protocol after calculation, and controls the camera to take pictures through the infrared LED.
[0017] The single-chip microcomputer chooses PIC12F675 that supports AD sampling. The voltage of the PWM signal su...
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The invention relates to a PWM signal self-adaptive Nex-7 camera shutter release which is formed by a voltage regulator circuit, a one-chip microcomputer and an infrared LED. The one-chip microcomputer collects a PWM signal; the one-chip microcomputer is connected with the positive pole and the earth pole of a power supply through the voltage regulator circuit; and the one-chip microcomputer is also connected with the infrared LED through an interface. The shutter release is capable of realizing carrying out aerial photographing work on a Nex-7 camera used in a 26CC-275CC level unmanned plane, and supporting 4.8V-8.4V wide voltages, so that the shutter release is suitable for most of unmanned plane self-driving instruments and is adaptive to batch production of the unmanned plane products.
Description
technical field [0001] The invention belongs to aerial photography in the field of unmanned aerial vehicles, and relates to a shutter cable of an aerial camera, in particular to a Nex-7 camera shutter cable adaptive to PWM signals. Background technique [0002] At present, the Nex-7 camera used by 26CC-275CC drone aerial photography needs a shutter controller whose input signal is PWM. The controller needs to detect the PWM signal output by the drone autopilot and output infrared Signal to control Nex-7 camera aerial photography. At present, aerial photography usually uses the transmission servo to press the shutter button. Since the UAV needs to increase the camera mount of the servo, it will increase the weight. [0003] Adopting the fixed seat method of transmission is not only not conducive to the mass production of drones, but also because the rocker arm stroke of the steering gear is inconsistent, the installation of each product needs to re-adjust the mechanical stru...
Claims
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Login to View More IPC IPC(8): H04N5/232G03B9/08G05B19/042G08C23/04G03B30/00
Inventor 田凯
Owner 天津全华时代航天科技发展有限公司