Photoelectric Sensing Module Matrix for High-Precision Ranging
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Solution Overview
Problem
Conventional photoelectric sensing systems for distance measurement suffer from low accuracy, high technical complexity, high cost, and high power consumption, making them unsuitable for precise ranging applications, especially for both short and long distances.
Innovation Solution
A photoelectric sensing acquisition module and method that utilizes a matrix of photoelectric sensing units, a signal accumulation module, and a time digital conversion module to convert received optical signals into digital pulse signals, accumulate, and sample them to determine the distance of a target object, achieving high precision through a combination of digital accumulation and time interval measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional photoelectric sensing systems are used for distance measurement, then the system can perform ranging function, but the measurement accuracy is low and the system complexity is high
Solution Approach 1:
The photoelectric receiving module is divided into multiple photoelectric sensing units arranged in a matrix, where each unit independently converts received optical signals into digital pulse signals. This segmentation allows parallel processing of multiple signals, improving measurement accuracy while maintaining manageable system complexity through modular architecture
Solution Approach 2:
A signal accumulation module is introduced as an intermediary component that accumulates digital pulse signals from multiple photoelectric sensing units and performs sampling to generate accumulation signals. This intermediary layer enables effective integration of multiple low-precision measurements into high-precision distance measurement results
2Measurement precision
If conventional photoelectric sensing systems are used for distance measurement, then the system can perform ranging function, but the cost is high
Solution Approach 1:
Each photoelectric sensing unit is designed to independently and completely process the signal conversion from optical signals to digital pulse signals, making the system self-sufficient at the unit level. This self-service capability eliminates the need for complex external processing equipment, reducing overall system cost while achieving high measurement precision through accumulated data from multiple units
Solution Approach 2:
The patent uses multiple identical photoelectric sensing units arranged in a matrix, where each unit is a simplified copy of the others. This copying approach allows the system to achieve high measurement accuracy through statistical accumulation of multiple measurements while keeping individual unit complexity and cost low
3Measurement precision
If conventional photoelectric sensing systems are used for distance measurement, then the system can perform ranging function, but the power consumption is high
Solution Approach 1:
The signal accumulation module performs periodic sampling of digital pulse signals from photoelectric sensing units, converting optical signals to electrical signals in discrete time intervals. This periodic action allows the system to achieve accurate distance measurement over time while reducing instantaneous power consumption compared to continuous high-power operation
Solution Approach 2:
The patent replaces complex analog signal processing mechanisms with digital pulse signal processing. Each photoelectric sensing unit directly converts optical signals into digital pulse signals, eliminating the need for complex analog-to-digital conversion circuits and reducing overall system power consumption while maintaining high measurement precision
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
The solution provides high accuracy and reliability in distance measurement for both short and long ranges, reducing technical complexity and power consumption while improving measurement precision.
Implementation Method 1
a photoelectric receiving module including a plurality of photoelectric sensing units arranged in a matrix, the photoelectric sensing units being configured to convert a received optical signal into a digital pulse signal
Implementation Method 2
a signal accumulation module electrically connected to the photoelectric receiving module, the signal accumulation module being configured to accumulate the digital pulse signal to obtain an accumulation signal
Implementation Method 3
a time digital conversion module electrically connected to the signal accumulation module, the time digital conversion module being configured to measure a time interval between a light signal emitted by the signal transmitting module and the light signal received by the photoelectric receiving module
Data Source
AI summary
One general aspect of the invention includes an apparatus for range determination. The apparatus includes a signal transmitter configured to emit an optical signal a first time. The apparatus also includes a first light transmitting unit configured to direct the optical signal to a target. The apparatus also includes a second light transmitting unit configured to receive a reflected optical signal at a second time, the reflected optical signal being associated with the optical signal and the target. The apparatus also includes a first photoelectric receiver configured to convert a first portion of the reflected optical signal to a first electrical signal. The apparatus also includes a first pulse converter configured to generate a first pulse using the first electrical signal. The apparatus also includes a first time to digital converter (TDC) configured to generate a first TDC output using at least the first electrical signal.