Laser Distance Measuring Apparatus Dynamic Time Resolution
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Solution Overview
Problem
Conventional laser distance measuring apparatuses face limitations in increasing measurement frequency per unit time due to processing and data transfer constraints, which compromise distance measurement accuracy and resolution, especially when measuring long distances.
Innovation Solution
The apparatus dynamically adjusts the time resolution of the time measuring device based on detection information, allowing for flexible adjustment of distance measurement precision and measurable distance without increasing data volume, thereby enhancing measurement frequency without improving processing capability or data transfer rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the time resolution is increased to improve distance measurement accuracy, then the measurement precision is improved, but the data amount increases and processing load increases
Solution Approach 1:
The time resolution is dynamically adjusted based on detection information (measured distance and relative velocity). When the object is far away or moving slowly, a coarser time resolution is used. When the object is close or moving fast, a finer time resolution is applied. This dynamic adjustment maintains measurement accuracy when needed while reducing data volume and processing load in other conditions, thereby increasing measurement frequency.
Solution Approach 2:
The system changes the time resolution parameter adaptively according to the measurement conditions (distance and velocity). By modifying this key parameter based on real-time detection information, the system optimizes the balance between measurement precision and processing efficiency, allowing higher measurement frequencies without sacrificing accuracy when required.
2Productivity
If the light emitting frequency is increased to improve measurement frequency, then the productivity is improved, but the processing time becomes insufficient and measurement accuracy deteriorates
Solution Approach 1:
The time resolution is dynamically adjusted based on detection information (measured distance and relative velocity). When the object is far away or moving slowly, a coarser time resolution is used. When the object is close or moving fast, a finer time resolution is applied. This dynamic adjustment maintains measurement accuracy when needed while reducing data volume and processing load in other conditions, thereby increasing measurement frequency.
Solution Approach 2:
The system changes the time resolution parameter adaptively according to the measurement conditions (distance and velocity). By modifying this key parameter based on real-time detection information, the system optimizes the balance between measurement precision and processing efficiency, allowing higher measurement frequencies without sacrificing accuracy when required.
3Productivity
If the data amount is reduced to improve processing speed, then the productivity is improved, but the time resolution becomes coarse and measurement accuracy deteriorates
Solution Approach 1:
The time resolution is dynamically adjusted based on detection information (measured distance and relative velocity). When the object is far away or moving slowly, a coarser time resolution is used. When the object is close or moving fast, a finer time resolution is applied. This dynamic adjustment maintains measurement accuracy when needed while reducing data volume and processing load in other conditions, thereby increasing measurement frequency.
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 enables a higher measurement frequency per unit time with improved angular resolution and update rate, while maintaining accuracy, by optimizing time resolution according to detection information, thus overcoming the limitations of conventional systems.
Implementation Method 1
a laser beam generating unit that emits a laser beam
Implementation Method 2
a light receiving unit that receives a reflected light of the laser beam reflected by an object, and outputs a light receiving signal
Implementation Method 3
a time measuring device that measures, with a time resolution, a light receiving time which is a time from a time point when the laser beam generating unit emits the laser beam to a time point when the light receiving unit outputs the light receiving signal
Data Source
AI summary
To provide a laser distance measuring apparatus which can increase the measurement frequency per unit time by suppressing the increase in the data amount expressing the measurement time, while ensuring the distance measurement precision and the measurable distance. A laser distance measuring apparatus measures, with a time resolution, a light receiving time which is a time from a time point when the laser beam generating unit emits the laser beam to a time point when the light receiving unit outputs the light receiving signal; calculates an object distance which is a distance to the object, based on the measurement result of the light receiving time by the time measuring device; and changes the time resolution of the time measuring device used for calculation of the object distance, based on detection information.