Sensor Control Device for Planimetric Feature Data Reduction
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Solution Overview
Problem
Existing sensor systems on moving objects face challenges in managing large data sizes when continuously measuring planimetric features, often requiring reduced sensing accuracy and frequency to minimize data, which can result in incomplete information acquisition.
Innovation Solution
A sensor control device that adjusts sensor sensitivity based on the position of planimetric features relative to the sensor's recognizable range, operating in high sensitivity when features are within range and low sensitivity or turning off sensors when features are outside the range, thereby optimizing data acquisition and reducing overall data size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the sensor continuously measures planimetric features during traveling, then the current information of planimetric features can be acquired, but the data size becomes enormous
Solution Approach 1:
The patent applies local quality by differentiating measurement strategies based on spatial location. Sensors perform high-precision measurements only when planimetric features are within a predetermined distance (local region), and reduce or stop measurements when features are outside this region. This spatially differentiated approach ensures current information is captured when relevant while avoiding excessive data generation during distant travel.
Solution Approach 2:
The patent implements dynamics by making measurement activity adaptive rather than static. The control device dynamically adjusts sensor operation based on real-time conditions: calculating distances between moving objects and planimetric features, and switching between measurement modes (high-precision, low-precision, or stopped) according to whether the feature is within the predetermined distance threshold. This dynamic adjustment resolves the contradiction between continuous information acquisition and data volume management.
2Quantity of substance
If the sensing accuracy and measurement frequency are reduced, then the data size can be reduced, but necessary information about the planimetric feature cannot be obtained
Solution Approach 1:
The patent applies local quality by implementing different measurement precision levels in different spatial zones. When planimetric features are within the predetermined distance (local region of interest), the sensor operates at high precision to capture necessary information. When features are outside this region, measurement precision is reduced or measurements are stopped entirely. This ensures measurement accuracy is maintained where needed while reducing overall data generation.
Solution Approach 2:
The patent changes operational parameters dynamically based on spatial conditions. The measurement frequency, precision, and activity state of sensors are adjusted as parameters according to the distance parameter between the moving object and planimetric features. This parameter change strategy allows the system to maintain high measurement accuracy when features are close (ensuring necessary information is obtained) while reducing accuracy and frequency when distant (reducing data size).
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 allows for efficient acquisition of detailed current information of planimetric features while minimizing data size, considering human safety and sensor performance, and enables frequent updates to map data for improved accuracy.
Implementation Method 1
one having a plurality of laser radars as sensors has been proposed (refer to, for example, Patent Literature 1). The moving object described in Patent Literature 1 measures on-road planimetric features by scanning a laser beam.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
Provided is a sensor control device capable of reducing the total data size of information acquired by a sensor while acquiring detailed current information of a planimetric feature by the sensor. A control unit 4 of the sensor control device 1 controls sensors 20A to 20D based on the planimetric feature information related to the planimetric features and the sensor information related to the sensors 20A to 20D. Thereby, while the sensors 20A to 20D are appropriately operated as necessary, and the detailed current information of the planimetric feature is acquired by the sensors 20A to 20D, the total data size of the information acquired by the sensors 20A to 20D can be reduced.