An electromagnetic interference isolation circuit device for unmanned aerial vehicles

Abstract

The present invention provides an electromagnetic interference isolation circuit device for drones, comprising: a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a matching first light emitter, a first The light receiver and the matching second light emitter and second light receiver. In the present invention, the first light emitter, the first light receiver, the second light emitter, and the second light receiver correspond to form two optocoupler devices, and the two optocoupler devices are used as the basis to design the optocoupler circuit, and the flight control circuit and The CDI circuit is divided into two independent circuits, which prevents the pulse signal of the CDI module from directly interfering with the flight control circuit.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicles, in particular to an electromagnetic interference isolation circuit device for unmanned aerial vehicles. Background technique [0002] The domestic UAV market has developed for nearly 30 years, gradually expanding from the initial military field to the consumer field. At present, the domestic consumer drone market is hot, and the general public's recognition and demand for drones has gradually increased. In the past two years, drone companies, financing times, number of pilots and product uses have increased significantly. UAVs are widely used, low cost, high efficiency, and have the advantages of no casualty risk, strong survivability, good maneuverability, and ease of use. Whether in the military or civilian fields, they have broad application prospects. [0003] However, most of the current oil-powered fixed-wing UAVs use CDI for ignition. When the CDI is ignited, a 30kV pulse voltage w...

AI Technical Summary

Problems solved by technology

[0003] However, most of the current oil-powered fixed-wing UAVs use CDI for ignition. CDI will generate 30kV pulse voltage during ignition, which will generate electromagnetic interference and affect the flight control system. When the relationship is an integer multiple, the flight control system will send out a disturbed signal to control the movement of the steering gear after being affected, which will directly affect the flight attitude of the UAV, and in severe cases, it will cause a crash during the flight

[0004] Therefore, the electromagnetic interference generated by the CDI of the UAV affects the working state of the flight control system, causing the UAV to fail to fly normally, which has become a technical problem to be solved urgently by those skilled in the art.

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