QR Code Sensor Reporting Without Pairing or Wired Links
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Solution Overview
Problem
Existing sensing devices face challenges in efficiently and securely communicating measurement results without the limitations of wired connections and the complexities of wireless connectivity, particularly in environments with no external power or unreliable Wi-Fi coverage.
Innovation Solution
Utilizing dynamic QR codes displayed on the sensing device screen to encode measurement data, allowing users to scan the QR code with a mobile device to access a web page that displays the results, eliminating the need for pairing or installing additional applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired connections are used to communicate measurement results, then data transfer reliability is improved, but device portability and ease of operation deteriorate
Solution Approach 1:
The patent replaces wired mechanical connections with optical QR code display and mobile device scanning. The sensing device displays measurement results as QR codes on its screen, and a mobile device captures the QR code image to retrieve data, eliminating the need for physical cables while maintaining reliable data transfer.
2Adaptability or versatility
If wireless connectivity (Wi-Fi) is implemented for data communication, then device versatility is improved, but device complexity and ease of operation worsen due to pairing requirements and application installation
Solution Approach 1:
The patent extracts the data communication function from complex wireless connectivity protocols and implements it through simple QR code display and mobile device scanning. This removes the need for Wi-Fi pairing, authentication, and application installation while maintaining data communication capability.
Solution Approach 2:
The patent introduces QR codes as an intermediary medium between the sensing device and mobile device. Instead of direct wireless communication requiring pairing and protocols, the QR code serves as a universal intermediary that any mobile device can scan and interpret, simplifying the connection process.
3Ease of operation
If measurement data is displayed directly on the sensing device screen, then ease of operation is improved, but data security and loss of information worsen
Solution Approach 1:
The patent creates a copy of the measurement data in QR code format displayed on the sensing device screen. The actual sensitive data remains secure in the device's memory, while the QR code provides a secure, transferable copy that can be captured by mobile devices without exposing the original data storage.
Data Source
AI summary
A sensing device comprising a battery, sensing devices, programmable controller, memory and user interface capable of displaying a QR code. Code running in the programmable device for recording sensor values and encoding them into a device data string and converting the string into a web site address for requesting a report. A web site with code for decoding the query string, appending user supplied data and time information, and generating a report web page presenting the recorded sensor values.