Adjustable Document Path Height for Sensor Accuracy and Jam Reduction
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Solution Overview
Problem
Document validators face challenges in accurately validating documents due to fixed path heights, which can lead to jam events and varying sensor measurement accuracy, depending on the document type and quality.
Innovation Solution
A document validator with an adjustable document path height, controlled by a sensor, actuator, and controller, which dynamically transitions the path height based on detected jam events, document type, and measured thickness to optimize sensor accuracy and prevent jams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed path height is used in the document validator, then the device structure is simple, but jam events occur and sensor measurement accuracy varies depending on document type and quality
Solution Approach 1:
The document path height is made dynamically adjustable through an actuator mechanism that can transition between multiple height positions. The controller automatically adjusts the path height based on detected document characteristics, transforming a static structure into a dynamic one that adapts to different document types and thicknesses, thereby reducing jam events while maintaining operational reliability
Solution Approach 2:
The physical parameter of path height is changed dynamically based on document characteristics. The system measures document properties and adjusts the path height parameter accordingly, allowing the validator to optimize the measurement depth and path configuration for each specific document type, preventing jams while accommodating variations in document quality and format
2Measurement precision
If a fixed path height is used, then the device structure is simple, but sensor measurement accuracy varies depending on document type and quality
Solution Approach 1:
The system dynamically adjusts the document path height to optimize sensor measurement accuracy for different document types. By making the path height adjustable rather than fixed, the sensor can maintain optimal measurement depth regardless of document variations, significantly improving measurement precision while adding controlled complexity through the actuator and controller mechanisms
Solution Approach 2:
The path height parameter is dynamically changed based on document characteristics detected by sensors. This parameter adjustment ensures that the measurement depth remains optimal for different document types, directly improving sensor measurement accuracy while allowing the system to adapt to variations in document quality, thickness, and format
3Adaptability or versatility
If the path height is adjusted dynamically, then jam events are reduced and measurement accuracy is improved, but the device complexity increases
Solution Approach 1:
The document validator incorporates a dynamic path height adjustment mechanism that enables the system to adapt to different document types automatically. The actuator and controller work together to transform a static structure into a dynamic one that can respond to varying document characteristics, significantly enhancing adaptability while managing the added complexity through automated control
Solution Approach 2:
The system dynamically changes the path height parameter based on detected document characteristics, enabling automatic adaptation to different document types, thicknesses, and formats. This parameter adjustment capability greatly improves versatility and adaptability, allowing the validator to handle a wide range of documents while the automated control system manages the complexity of the adjustment mechanism
Data Source
AI summary
A document validator includes a sensor, a transportation unit, an actuator, and a controller. The transportation unit is adjacent the sensor and has a document path, at least a portion of which has an adjustable path height. The transportation unit is configured to transport a document from a first location past the sensor to a second location. The actuator is operable to transition the adjustable path height between a first path height and a second path height different from the first path height. The controller is configured to automatically cause the actuator to transition the adjustable path height between the first path height and the second path height. Related apparatus, systems, techniques, and articles are also described.