BMC Signal Receiving Circuit for Stable Pulse Width Detection
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Solution Overview
Problem
Conventional biphase mark coding (BMC) receivers often incorrectly identify analog voltage signals due to variations in pulse width after waveform shaping, leading to incorrect signal detection.
Innovation Solution
A signal receiving circuit with an input voltage regulating circuit for waveform pre-regulation and a comparing circuit to output a comparison voltage signal with a pulse width that satisfies a predetermined condition, ensuring correct signal identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If waveform shaping is performed using a digital circuit, then the BMC data signal can be detected, but the pulse width variations cause incorrect signal identification
Solution Approach 1:
The patent applies preliminary action by performing waveform pre-regulation before the main signal detection process. The input voltage regulating circuit pre-processes the BMC data signal to standardize its waveform characteristics and stabilize pulse width before the signal reaches the digital detecting circuit, thereby preventing pulse width variations from causing incorrect signal identification.
Solution Approach 2:
The patent introduces an intermediary component - the input voltage regulating circuit - that acts as a mediator between the received BMC data signal and the digital detecting circuit. This regulating circuit conditions the signal by stabilizing its pulse width and waveform characteristics, ensuring that the digital detector receives a standardized signal for accurate detection without being affected by pulse width variations.
2Ease of operation
If conventional BMC receiver is used, then signal reception is possible, but process deviations and temperature variations affect detection accuracy
Solution Approach 1:
The patent implements feedback by using the output signal from the comparing circuit to adjust and regulate the input voltage signal. The regulating circuit continuously monitors the waveform characteristics and uses feedback control to maintain stable pulse width and waveform shape, compensating for process deviations and temperature variations to ensure accurate signal detection.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the voltage and waveform parameters of the BMC data signal through the input voltage regulating circuit. The circuit modifies key parameters such as pulse width, voltage level, and waveform shape to maintain them within optimal detection ranges, thereby compensating for environmental variations and ensuring consistent detection accuracy.
Data Source
AI summary
This document discusses, among other things, a signal receiving circuit, configured to receive an input voltage signal. The signal receiving circuit can comprise an input voltage regulating circuit and a comparing circuit. The input voltage regulating circuit can carry out a waveform pre-regulation for the input voltage signal to obtain a first voltage signal, and the comparing circuit can compare the first voltage signal with a second voltage signal, and output a comparison voltage signal having a pulse width that satisfies a first predetermined condition indicative that the input voltage signal is correctly identifiable. The present document further discusses a signal detecting circuit and a signal receiving method.