Time Detection Circuit With Linear-Region Signal Amplification
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Solution Overview
Problem
Conventional time detection circuits experience accuracy reduction due to signal distortion when operating in non-linear regions, leading to unreliable time length detection.
Innovation Solution
A time detection circuit that includes an input signal processor and a time signal amplifier, where the input signal processor adjusts the time difference value by comparing it with a set reference value, ensuring the adjusted value falls within the linear operation region of the amplifier, thereby maintaining accurate time detection results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the time signal amplifier operates in non-linear operation regions to handle large time difference values, then the amplifier can process a wider range of input signals, but the amplification time difference value exhibits distortion which reduces the accuracy of time length detection
Solution Approach 1:
The input signal processing range is segmented into multiple regions: a linear operation region for small time difference values and non-linear operation regions for large time difference values. The system automatically selects the appropriate operation region by adjusting the reference value, thereby maintaining high detection accuracy while handling a wide range of input signals.
Solution Approach 2:
The reference value used for comparison is made dynamic rather than fixed. The system adjusts the reference value based on the input signal characteristics to shift the operating point between linear and non-linear regions, enabling the amplifier to adaptively maintain optimal performance across different signal conditions.
2Measurement precision
If the time signal amplifier operates in linear operation regions to maintain accurate time detection, then the detection accuracy is improved, but the amplifier can only handle a limited range of time difference values
Solution Approach 1:
The reference value is dynamically adjusted to shift the linear operation region's position relative to the input signal range. This allows the system to maintain operation within the linear region for accurate detection while adapting to different time difference value ranges by changing the comparison threshold.
Solution Approach 2:
The system performs preliminary adjustment of the reference value before the amplification process based on the input signal characteristics. This preliminary action ensures that the subsequent amplification operation occurs within the linear region, guaranteeing detection accuracy before the signal is processed.
3Device complexity
If a fixed reference value is used for comparison, then the circuit operation is simplified, but the system cannot adapt to different input signal conditions which reduces detection flexibility
Solution Approach 1:
The reference value transitions from a fixed parameter to a dynamic parameter that automatically adjusts based on input signal conditions. This dynamic adjustment mechanism maintains relatively simple circuit operation while significantly improving the system's adaptability to different detection scenarios.
Data Source
AI summary
A time detection circuit and a time detection method are provided. The time detection circuit includes an input signal processor and a time signal amplifier. The input signal processor receives a first input signal and a second input signal, calculates a time difference value between the first input signal and the second input signal, adjusts the time difference value by comparing the time difference value with a set reference value, and provides the adjusted time difference value. The time signal amplifier receives the adjusted time difference value, and amplifies the adjusted time difference value to generate an amplified time signal. The time signal amplifier operates in a linear operation region between a first time value and a second time value, and the set reference value is set according to the first time value and the second time value.