Speed collecting circuit of piston engine of drone

Abstract

The invention provides a speed collecting circuit of a piston engine of a drone, wherein a power reference circuit is responsible for supplying power; a speed input shaping circuit inputs the originalspeed signal to a frequency dividing circuit after shaping, the frequency dividing circuit divides and then sends the speed signal to the speed collecting circuit, the output end of the speed collecting circuit is connected to the data line of a processor circuit, the address line of the processor circuit is connected to a signal decoding circuit, and the output end of the signal decoding circuitis connected to the enabling end of the speed collecting circuit. When the address signal output by the processor circuit is consistent with the function of the signal decoding circuit, the signal decoding circuit outputs a high level, otherwise the signal decoding circuit outputs a low level, and he output end of the speed collecting circuit outputs a speed signal if the signal decoding circuitoutputs a high level. The speed collecting circuit provided by the invention has the advantages of simple implementation, high reliability, high precision of speed collection, flexible time zone adjustment due to flexible combination of software and hardware, and wide application, and can be popularized in different piston engines of drones.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicles, in particular to a rotational speed acquisition circuit of an unmanned aerial vehicle. Background technique [0002] The engine is the core component of the UAV, and it is the core that restricts the overall performance of the UAV. Its reliability directly determines the safety and survivability of the entire UAV system. During the ground test and flight process, the engine needs to be controlled. The parameters are collected in real time to analyze the state of the engine, and the engine speed is an important parameter of the engine and the data that most directly reflects the working state of the engine. [0003] Existing UAV rotational speed collection usually adopts special equipment on the UAV to collect parameters such as the rotational speed of the engine. This method significantly increases the system scale of the UAV, and the cost of the system is relatively high. Contents of th...

AI Technical Summary

Problems solved by technology

[0003] Existing UAV rotation speed collection usually uses special equipment on the UAV to collect parameters such as engine speed. This method significantly increases the system size of the UAV, and the cost of the system is relatively high

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