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Airborne PWM signal conversion device and method

A PWM signal, conversion device technology, applied in the direction of pulse duration/width modulation, etc., can solve the problems of data interface stability, low speed and reliability, poor flexibility, and difficult to expand, etc., to improve flight safety and improve flight safety. Versatility, the effect of increasing speed

Inactive Publication Date: 2015-01-21
丑武胜 +1
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Problems solved by technology

[0004] To sum up, the existing airborne PWM signal conversion devices have shortcomings such as serial completion of tasks, poor real-time performance, low precision of PWM sampling and generating PWM, poor flexibility, and difficult expansion, as well as low stability, rapidity and reliability of the data interface. And other issues

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  • Airborne PWM signal conversion device and method
  • Airborne PWM signal conversion device and method
  • Airborne PWM signal conversion device and method

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Embodiment Construction

[0059] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0060] Such as figure 1 As shown, an airborne PWM signal conversion device includes a crystal oscillator 1, a bus driver 1 (3), an FPGA chip 4, a bus driver 2 (5) and a microprocessor 6, and the FPGA chip 4 is used as a core component of the signal conversion device, respectively Connect with crystal oscillator 1, bus driver 1 (3), bus driver 2 (5), microprocessor 6, comprise PLL frequency multiplication unit 401, clock frequency division unit 402, PWM pulse width sampling unit 5 ( 403), remote control / self-driving signal switching enabling unit 404, remote control / self-driving signal switching unit 405, PWM period sampling unit 406, PWM pulse width sampling unit 1 (407), PWM pulse width sampling unit 2 (408), PWM pulse width Sampling unit 3 (409), PWM pulse width sampling unit 4 (410), PWM pulse width sampling unit 6 (411), PWM signal g...

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Abstract

The invention provides an airborne PWM signal conversion device and a method. The precision in sampling and generating PWM signals is improved by using a method of combining coarse counting and fine counting; and data communication is carried out by using a DPRAM with dual mailboxes, and the rapidity, the stability and the reliability of data exchange between a flight control unit and a PWM terminal are improved. The device provided by the invention is realized in an FPGA (field programmable gate array), can be applied to different models of remote controllers and different types of unmanned aerial vehicles, and realizes multi-task expansion.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicle and its flight control, in particular to an airborne PWM signal conversion device and method for an unmanned aerial vehicle autopilot. Background technique [0002] The military use of drones has changed from intelligence, surveillance and reconnaissance equipment in the past to a weapon carrying missiles to directly attack ground targets. It also plays an important role in civil and scientific research fields such as traffic monitoring, aerial surveying and mapping, disaster detection, and atmospheric monitoring. Regardless of the consideration of national defense construction or social development, the production, research and development, and equipment of unmanned aerial vehicles have become an important international development trend. In terms of drone development, the United States and Israel are at the forefront of the world. Among them, the "Global Hawk" and "Heron" servi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K7/08
Inventor 丑武胜黄海明
Owner 丑武胜
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