Position Detecting Device Integrating Slider Identification and Position Detection
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Solution Overview
Problem
Conventional linear conveyor devices have a complex configuration due to the need for separate mechanisms to identify and position a slider, which complicates the drive control of linear motors.
Innovation Solution
A position detecting device that includes a scale with adjacent tracks of different intervals on the slider, allowing sensors to generate positional data and identification information unique to the slider, thereby integrating slider identification and position detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate mechanisms are used for slider identification and position detection, then each function can be performed independently, but the device complexity increases
Solution Approach 1:
The patent combines slider identification and position detection into a single integrated system. The scale includes multiple tracks (first track with first interval, second track with second interval) that are detected by the same sensor, allowing both identification information and position data to be obtained through one detection mechanism rather than separate systems.
Solution Approach 2:
The scale structure serves multiple functions simultaneously. The same scale component with its multiple tracks provides both unique identification information for the slider and precise position detection data, making the detection system universal for both identification and positioning tasks.
2Measurement precision
If multiple tracks with different intervals are used on the scale, then detection accuracy is improved, but the scale complexity increases
Solution Approach 1:
The scale is segmented into multiple distinct tracks, each with different intervals. The first track has scale marks at a first interval and the second track has scale marks at a second interval, allowing the system to use different track resolutions for different measurement needs, thereby improving overall detection precision.
Solution Approach 2:
The patent adds a dimensional aspect to the scale by incorporating multiple tracks arranged in different spatial relationships. Rather than increasing complexity in a single dimension, the solution uses multiple dimensional tracks (different intervals, different positions) to enhance measurement capabilities.
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 configuration simplifies the device by allowing the position detecting device to identify both the slider and its position, eliminating the need for additional identification mechanisms and improving detection accuracy.
Implementation Method 1
a sensor that detects the scale
Implementation Method 2
the scale including a first track and a second track adjacent to each other along a direction perpendicular to the moving direction, the first track being composed of scale marks lined along the moving direction at a first interval, the second track being composed of scale marks lined along the moving direction at a second interval
Data Source
AI summary
The linear conveyor device includes a position detecting device including a scale attached to a slider, and a sensor structural body including a sensor and a driver. The driver is provided with a first and a second signal processing units, and a signal comparison processing unit. The first signal processing unit performs predetermined first interpolation processing on an output signal from a first sensor, generates and outputs first positional data. The second signal processing unit performs predetermined second interpolation processing on an output signal from a second sensor, generates second positional data, and outputs the second positional data. The signal comparison processing unit recognizes the first positional data as positional information of the slider, generates identification information unique to the slider, and outputs the identification information, where the identification information corresponds to a difference between the first positional data and the second positional data.