Terminal voltage measurement network of split type air conditioner interconnection line

Abstract

The invention provides a terminal voltage measurement network of a split type air conditioner interconnection line, and the terminal voltage measurement network comprises an input and output line 1, an input and output line 2, an input and output line 3, an input and output line 4 and a PE line which are sequentially connected in series with an inductor L2 and an inductor L1, an input and output line node is connected in parallel with a capacitor C2 and a resistor R2, a capacitor C1 and a resistor R1, and a capacitor C3 and a resistor R3, and the input and output lines are connected with the extraction radio frequency output end Line RF and are used for extracting a disturbance voltage radio frequency signal. Through the technical scheme of the invention, a more stable power supply or signal path can be provided, and meanwhile, an interference voltage signal is extracted; interference voltage signals can be extracted according to the source direction of the interference voltage signalof the interconnection line, product research and development or rectification is more targeted, terminal disturbance voltage measurement of the air conditioner interconnection line can be conducted at the same time, the air conditioner interconnection line can be directly placed on a terminal disturbance voltage grounding reference flat plate, and grounding reliability is improved. And an external interference signal is isolated to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of electromagnetic compatibility detection of split-type air conditioners for household use and similar purposes, in particular to a terminal voltage measurement network of interconnecting wires of split-type air conditioners. Background technique [0002] Linear impedance stabilization network LISN, also called artificial power network AMN, is an important device for terminal conduction disturbance measurement. It has three main functions: one is coupling and decoupling. Prevent the radio frequency electromagnetic disturbance signal generated by the measured object from entering the power supply network, and attenuate the electromagnetic disturbance signal from the power supply network; the second is to connect the radio frequency disturbance signal to the radio frequency input port of the EMI measurement receiver through the internal coupling capacitor for quantitative analysis; The third is to provide a s...

AI Technical Summary

Problems solved by technology

However, a small number of home appliances such as common air conditioners cannot use artificial power networks due to the existence of interconnection wires or load ports. During the disturbance voltage test, there will be measurement accuracy and repeatability problems due to the placement of the voltage probe and the grounding method.

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