Universal Sensor Test Medium for Banknote Verification
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Solution Overview
Problem
Existing sensor testing apparatuses for documents of value, such as bank notes, are limited in their ability to use test media across different sensors and apparatuses due to the need for specific information storage and updates in each device, making it difficult to implement a universal testing solution.
Innovation Solution
A test medium with an electronic data memory and data interface allows for the transmission of testing data to a test device, enabling the same medium to be used for various sensors and apparatuses, eliminating the need for separate storage and updates in each device, and ensuring a consistent association of the test procedure with the medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If test media are designed with machine-readable identification and stored sensor testing information in each apparatus, then sensor testing can be performed with specific test media, but the test media cannot be readily used in other apparatuses and require separate information storage and updates in each device
Solution Approach 1:
The test medium is designed with a standardized data interface that can be universally read by any sensor testing apparatus equipped with the corresponding interface. The electronic data memory contains sensor testing information that can be transferred to multiple different apparatuses, allowing the same test medium to be used across different bank note checking apparatuses without requiring separate storage or updates in each device.
Solution Approach 2:
The patent introduces a standardized data interface as an intermediary between the test medium and various sensor testing apparatuses. This interface acts as a mediator that enables communication and data transfer between the test medium's electronic data memory and the apparatuses' processing units, allowing seamless compatibility without requiring each apparatus to have dedicated storage for test medium information.
2Measurement precision
If each apparatus stores information about test media identification and sensor properties, then sensor testing can be performed with specific properties, but extensive storage and updates are required in each device
Solution Approach 1:
The patent extracts the sensor testing information from the apparatuses and stores it in the test medium's electronic data memory. The test medium carries the necessary testing algorithms, reference values, and sensor property information externally, so the apparatuses do not need to maintain separate storage and update mechanisms for this information.
Solution Approach 2:
The test medium contains copied versions of the sensor testing information that can be transferred to multiple apparatuses. Instead of each apparatus maintaining its own copy and synchronization of test information, the apparatuses receive and use copies from the test medium's electronic data memory through the standardized data interface.
3Measurement precision
If a reference device with optical reference surface is used for calibrating optical sensors, then calibration can be performed with different areas of the reference surface, but the reference device is an integral part of the checking device and cannot be used for other checking devices
Solution Approach 1:
The patent transforms the integral reference device into a universal test medium that can be used across multiple checking devices. By implementing the reference surface and calibration information in a portable electronic data memory format with a standardized interface, the same calibration medium can serve multiple optical sensors in different apparatuses without being tied to a single device.
Data Source
AI summary
An apparatus and a method for testing of sensors for documents of value and a pertinent test medium. A test medium (1) having an electronic data memory (7) for data is provided, the data being used for testing the sensor (11). The data are transmitted from the test medium to a test device (12), which tests the sensor in dependence on the transmitted data.