Time-of-Flight Detector Array Statistics With Sequential Data Selection
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Solution Overview
Problem
Time-of-flight measurement systems using array detectors require significant hardware resource overhead and storage capacity due to the need for numerous statistics channels to process flight time data from multiple detection units.
Innovation Solution
A time-of-flight measurement system with a detector array comprising detection modules and a statistics module that includes selection and statistics components, which sequentially select and output flight time data in a time-sharing manner, reducing the need for one-to-one corresponding statistics components for each detection module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a plurality of detection units in an array detector perform time-of-flight measurement, then measurement coverage and detection capability are improved, but the number of statistics channels increases, resulting in increased hardware resource overhead
Solution Approach 1:
The patent implements periodic action by using a selection component to sequentially select flight time data sets from different detection modules in a time-sharing manner. The selection component cycles through multiple detection modules, outputting their data to a single statistics component group for processing. This periodic selection approach allows one set of statistics components to handle data from multiple detection modules over time, reducing the total number of statistics channels needed while maintaining full detection coverage across all modules.
2Measurement precision
If one-to-one corresponding statistics components are allocated to each detection module, then data processing accuracy is maintained, but storage space and hardware resources are significantly increased
Solution Approach 1:
The patent applies universality by designing a single set of statistics components that can process data from multiple detection modules through time-sharing. The selection component acts as a universal interface that routes data from any detection module to the shared statistics components. This multi-functional approach allows the same statistics components to serve multiple detection modules sequentially, reducing storage space and hardware resources while maintaining data processing accuracy through proper time-division multiplexing.
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 approach reduces the number of statistics channels and hardware resource overhead by allowing a single set of statistics components to process data from multiple detection modules, thereby optimizing resource usage.
Implementation Method 1
a detector, such as a single photon avalanche diode (SPAD), receives the echo signal, performs photoelectric conversion and avalanche effect to generate a pulse electrical signal
Implementation Method 2
a detector, such as a single photon avalanche diode (SPAD), receives the echo signal, performs photoelectric conversion and avalanche effect to generate a pulse electrical signal
Data Source
AI summary
A time-of-flight measurement system and a laser ranging device is provided. The time-of-flight measurement system includes a detector array and a statistics module. The detector array includes a first detection module group including t detection modules arranged in sequence. The statistics module includes a first selection module group and a first statistics module group. The first selection module group includes a first group of first selection components used to select, in sequence, the flight time data set corresponding to each of the t detection modules, so as to output, in a time-sharing manner, the flight time data set corresponding to each of the t detection modules. The first statistics module group includes a first group of first statistics components used to count the flight time data set corresponding to the detection module selected by the first group of first selection components.