Barcode Tape Measure with Rotation Sensor and Controller
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Solution Overview
Problem
Conventional tape measures are inaccurate and inconvenient for real-time length measurements due to reliance on visual reading and lack of digital storage, with errors arising from conductor spacing and manual recording.
Innovation Solution
A length measurement device and system that includes a tape with a barcode for length measurement, a second measurer for rotation angle sensing, and a controller for correcting and transmitting measurements to a user terminal, along with a stopper for restricting tape pull-out, enabling accurate and convenient real-time measurement and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a tape measure with visual markings is used, then the device is simple and easy to manufacture, but measurement accuracy deteriorates due to reliance on visual reading and conductor spacing errors
Solution Approach 1:
The patent combines multiple measurement methods (barcode recognition, rotation angle sensing, and distance measurement) into a single integrated system. The controller merges data from the first measurer (barcode), second measurer (rotation angle), and distance measurer to calculate final length, resolving the contradiction by integrating multiple sensing mechanisms rather than relying on a single simple tape marking system
Solution Approach 2:
The patent replaces the traditional mechanical visual reading system with electronic and optical measurement technologies. Instead of relying on visual interpretation of tape markings, the system uses barcode recognition cameras, rotation angle sensors, and distance measurement devices to automatically capture and process measurement data, significantly improving accuracy while accepting increased device complexity
2Productivity
If manual reading and recording is used, then the device structure is simple, but productivity deteriorates due to time-consuming measurement and manual recording processes
Solution Approach 1:
The measurement device performs self-service by automatically capturing measurement data through barcode recognition and rotation angle sensing, then automatically processing and storing the results. The system eliminates the need for manual reading and recording by having the controller automatically calculate lengths and save data to storage devices, thereby improving productivity while managing device complexity through automation
Solution Approach 2:
The patent implements feedback mechanisms where the controller continuously receives data from multiple sensors, processes the information, and provides real-time measurement results. The system uses feedback from the first and second measurers to verify and correct measurements, ensuring accuracy while maintaining efficient automated operation without manual intervention
3Measurement precision
If a single measurer is used, then the device complexity is low, but measurement precision deteriorates due to lack of verification and correction mechanisms
Solution Approach 1:
The patent applies partial measurement actions through multiple independent measurers (first measurer for barcode, second measurer for rotation angle, distance measurer) that each perform a specific measurement function. By having multiple measurers perform partial measurements of the same quantity, the system achieves verification and correction capabilities, improving precision while managing complexity through specialized functional division
4Loss of information
If no storage device is provided, then the device structure is simple, but loss of information occurs as measurements cannot be stored or retrieved
Solution Approach 1:
The patent implements preliminary action by providing storage devices that are ready to receive and retain measurement data as it is generated. The storage functionality is prepared in advance, allowing measurements to be immediately saved without manual recording, preventing information loss while integrating storage capability into the overall device architecture
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
Improves measurement accuracy by comparing values from multiple sensors, allows real-time verification of distance measurements, restricts tape pull-out based on set distances, and provides comprehensive data transmission to user terminals for enhanced user convenience.
Implementation Method 1
a first measurer configured to generate a first measurement value with respect to a pulled-out length of the tape by recognizing the barcode of the tape
Implementation Method 2
a second measurer configured to generate a second measurement value with respect to the pulled-out length of the tape by sensing a rotation angle of the reel
Implementation Method 3
a controller configured to mutually correct the first measurement value and the second measurement value and convert the corrected first and second measurement values into pulled-out length information of the tape
Implementation Method 4
a distance measurer provided on one side of the case and configured to generate measurement distance information by remotely measuring a distance to the object
Data Source
AI summary
A length measurement device comprises: a tape which is wound on a reel received in a case, one end of which is pulled out of the case so as to measure the length of an object, and which has a barcode formed on one surface thereof; a first measurement unit for recognizing the barcode on the tape so as to generate a first measurement value of the length along which the tape is pulled out of the case; a second measurement unit for sensing a rotation angle of the reel so as to generate a second measurement value of the length along which the tape is pulled out of the case; and a control unit for making the first measurement value and the second measurement value mutually compensate for each other so as to convert same into the pulled-out length information of the tape.