Detection circuit for helicopter alternating current power supply system

Abstract

The invention belongs to aviation detection technologies, and relates to a detection circuit for a helicopter alternating current power supply system. The detection circuit is characterized by being composed of a first relay JA, a second relay JB, a first fixed resistor R1, a second fixed resistor R2, an ammeter A, a voltmeter V, diodes P1 and P2, a first reset button switch M1, a second reset button switch M2, a first double-pole double-throw switch K1, a second double-pole double-throw switch K2, a first single-pole single-throw switch K3 and an indicator lamp L1. According to the detection circuit for the helicopter alternating current power supply system, potential safety hazards in the measurement process are eliminated; loading measurement is achieved, and the accuracy of test results is improved; the measurement process is simplified, the measurement period is shortened, and the measurement efficiency is improved.

Description

technical field [0001] The invention belongs to aviation detection technology, and relates to a detection circuit of a helicopter AC power supply system. Background technique [0002] At present, the detection method for the helicopter AC power supply system is: connect the existing test device to the left and right static converters of the aircraft, and use the three-purpose meter to measure the output voltage of the left and right static converters by switching the switches respectively. The disadvantages of the existing testing schemes are: first, there are potential safety hazards. If you touch the AC output button on the 26V / 115V side by mistake, it will cause high and low voltages to be connected, and the logic of the line power supply will be confused. When measuring the AC output status of the left and right 115V and 26V static converters, if frequent misoperations occur, the finished product of the installed machine will be burned. Second, the output voltage measu...

AI Technical Summary

Problems solved by technology

The disadvantages of existing testing schemes are: first, there are potential safety hazards

If you accidentally touch the 26V / 115V side AC output button, it will cause the high and low voltage to be connected, and the logic of the line power supply will be confused.

When measuring the AC output status of the left and right 115V and 26V static inverters, if frequent misoperations will cause the finished product to be burned

Second, the output voltage measurement value is the unloaded state value, which cannot truly reflect the load state of the converter. The test results are not accurate enough, and it is difficult to ensure the load capacity of the static converter and the aircraft AC power distribution system to meet the design requirements.

Third, the measurement procedure is cumbersome, the measurement cycle is long, and the measurement efficiency is low

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