Contactless Reader Housing Touch Detection for Reading Errors
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Solution Overview
Problem
Existing reading devices experience prolonged downtime and complex error analysis due to reading failures caused by touches on the housing, which affect reading quality and increase costs.
Innovation Solution
A reading device equipped with a touch detection unit that senses electrostatic discharges on a conductive housing, allowing detection of even gentle touches, and a data processing unit to log and analyze touch patterns, correlating them with reading errors for faster troubleshooting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If touch detection is added to the reading device, then reading quality and error analysis are improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical touch detection mechanisms with electrostatic field sensing. The touch detection unit detects touches through changes in electrostatic field capacity caused by human proximity or contact, eliminating the need for mechanical switches, buttons, or pressure sensors. This substitution maintains high reliability in detecting operator interactions while significantly reducing mechanical complexity and improving durability.
Solution Approach 2:
The patent introduces an electrostatic field as an intermediary between the operator and the reading device. Instead of direct mechanical contact, the operator's body acts as a capacitor that modifies the electrostatic field, which is then detected by the touch detection unit. This intermediary approach allows for non-contact or light-contact detection, reducing wear and mechanical complexity while maintaining accurate touch detection capability.
2Manufacturing precision
If the reading device is stationary for optimal reading, then reading quality is improved, but adaptability to different operating conditions deteriorates
Solution Approach 1:
The patent applies dynamics by making the reading device adaptable to different operational states. The system can operate in stationary mode for optimal reading quality when objects are conveyed past it, but the touch detection unit enables the device to detect and respond to operator interactions that may require orientation changes or positional adjustments. This dynamic capability allows the device to transition between fixed reading positions and adjusted orientations based on operational needs.
Solution Approach 2:
The patent utilizes parameter changes by detecting touches through electrostatic field variations. When a touch is detected, the system can change operational parameters such as reading angle, focus distance, or activation of different scanning modes. This allows the device to maintain optimal reading quality for stationary scanning while adapting to different operating conditions triggered by operator interaction, such as adjusting for different object types or reading distances.
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
Reduces downtime by enabling rapid identification and correction of reading errors, simplifying error analysis, and improving reading quality through touch detection and pattern recognition.
Implementation Method 1
the touch detection unit is designed to detect electrostatic discharges on the housing due to touches
Data Source
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AI summary
A reading device for non-contact reading of information from objects that can be moved past the reading device, wherein the reading device comprises a data processing unit, a scanner unit, a communication unit, a touch detection unit, and a housing. The touch detection unit is configured to detect touches to the housing of the reading device.