Voltage Detection Device High-Frequency Signal Recovery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional voltage detection devices struggle to accurately measure high-frequency components generated during accidents due to the formation of a high-pass filter characteristic, which cuts off transitional high-frequency signals in the signal processing circuit.
Innovation Solution
A voltage detection device with an integration circuit, a first gain adjusting unit, a second gain adjusting unit, and an adder is implemented, where the integration circuit integrates the voltage divider output, and the gain adjusting units amplify or attenuate the signal to specified amplitudes, ensuring accurate detection of high-frequency components over a wide band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a voltage dividing resistor is connected in parallel with the earth capacitance to drop the voltage value to a level suitable for signal processing circuit input, then the voltage value of the intermediate electrode is reduced to a safe level, but a high-pass filter characteristic is formed that cuts off high-frequency components during accidents
Solution Approach 1:
The signal processing path is segmented into two parallel channels: one channel processes the voltage divider output through integration to recover low-frequency components, while the other channel directly processes the voltage divider output to preserve high-frequency components. The adder combines both channels to reconstruct the complete voltage waveform spectrum.
Solution Approach 2:
The integration circuit acts as an intermediary that processes the voltage divider output to recover low-frequency components that were attenuated by the high-pass filter characteristic, while the direct path preserves high-frequency components. Both intermediary paths are combined to reconstruct the full spectrum.
2Ease of operation
If a high-pass filter characteristic is formed by the voltage divider configuration, then the voltage value is reduced to a level suitable for signal processing circuit input, but high-frequency components generated during accidents are cut off
Solution Approach 1:
The signal processing is segmented into two parallel paths: one path integrates the voltage divider output to recover low-frequency components, while the other path directly processes the voltage divider output to preserve high-frequency components. The adder combines both paths to reconstruct the complete voltage waveform.
Solution Approach 2:
The system changes the processing parameter (integration vs. direct processing) for different frequency components. By applying integration to one channel and direct processing to another channel, then combining them, the system achieves wide-band response while maintaining compatibility with the voltage divider configuration.
3Measurement precision
If monotonous integration process is applied in the signal processing circuit, then the voltage signal is processed, but high-frequency components are cut off due to low-pass filter characteristic
Solution Approach 1:
The signal processing is segmented into two parallel paths: one path applies integration to recover low-frequency components, while the other path directly processes the signal to preserve high-frequency components. The adder combines both paths to reconstruct the complete voltage waveform without losing high-frequency information.
Solution Approach 2:
The integration output and the direct voltage divider output are merged in the adder. This combining operation reconstructs the complete voltage waveform by summing the low-frequency recovered components with the high-frequency preserved components, eliminating the information loss caused by monotonous integration alone.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for accurate detection of high-frequency components over a wide band, preventing signal saturation and maintaining high-fidelity voltage waveform reproduction.
Implementation Method 1
an intermediate electrode is provided between a central conductor and a tank to constitute a voltage divider... a stray capacitance is formed between the central conductor and the intermediate electrode and an earth capacitance is formed between the central conductor and the tank
Implementation Method 2
an integration circuit to which a voltage of the voltage divider is input
Implementation Method 3
a first gain adjusting unit that amplifies an output voltage of the integration circuit to a specified amplitude; a second gain adjusting unit to which a voltage of the voltage divider is input and that amplifies or attenuates the voltage of the voltage divider to the specified amplitude
Data Source
AI summary
A voltage detection device is such that an intermediate electrode is provided between a central conductor to which a voltage is applied and a grounded tank to constitute a voltage divider and detects a voltage of the central conductor on the basis of a voltage of the voltage divider. The voltage detection device includes an integration circuit to which a voltage of the voltage divider, which is an output of the voltage divider, is input, an analog circuit that amplifies an output voltage of the integration circuit to a specified amplitude, an amplifier/attenuator to which a voltage of the voltage divider, which is an output of the voltage divider, is input and that amplifies or attenuates the voltage of the voltage divider to the specified amplitude, and an adder that adds an output voltage of the analog circuit and an output voltage of the amplifier/attenuator.