Wireless Pump Authorization via Optical Handshake
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Solution Overview
Problem
Modern pump systems face challenges in secure control and cost due to the need for user interfaces like touch screens, which increase production and purchase costs and pose security risks by allowing unauthorized access.
Innovation Solution
A method for wirelessly authorizing handheld communication devices to interact with pump control systems, using authorization signal sequences generated by light or sound sources, allowing only authorized users to access and control the pump units, eliminating the need for expensive user interfaces on the pump units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a touch screen or display interface is provided at the pump unit, then the ease of operation is improved, but the manufacturing cost and purchase price increase
Solution Approach 1:
The user interface functions (display and input) are extracted from the pump unit and relocated to a mobile device. The pump unit retains only essential indicators (LEDs), while the mobile device handles the complex display and interaction, eliminating the need for expensive touch screens at the pump while maintaining ease of operation.
Solution Approach 2:
The mobile device serves multiple functions: it acts as the primary user interface for controlling pump parameters, displays operational status, provides authentication, and enables communication with the pump unit. This multi-functionality replaces the need for dedicated pump-mounted display and input hardware.
2Ease of operation
If a touch screen or display interface is provided at the pump unit, then the ease of operation is improved, but the security risk increases due to unauthorized access
Solution Approach 1:
The mobile device acts as an intermediary between the user and the pump control system. It establishes a secure communication channel, authenticates users, and transmits controlled commands to the pump, preventing direct unauthorized access to the pump's control system while maintaining ease of operation through the familiar mobile interface.
Solution Approach 2:
Authentication is performed in advance before allowing access to control functions. The system verifies user credentials and establishes secure session parameters before enabling pump control, ensuring that only authorized users can modify pump settings while maintaining a user-friendly interface.
3Reliability
If wireless authorization using light sources is implemented, then the security is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical or electronic authentication mechanisms with an optical communication system using light-emitting diodes. The LED-based authorization signal transmission simplifies the hardware while enhancing security through wireless, contactless authentication that is difficult to intercept or replicate.
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
This approach provides a secure and cost-effective solution by ensuring only authorized users can control the pump systems, reducing the necessity for expensive interfaces and enhancing security by preventing unauthorized access and manipulation.
Implementation Method 1
the device has a light source for emitting light, which can be used for the transmission of data to a reader device
Implementation Method 2
the handheld communication device may comprise a photo detector, such as a CMOS array, and wherein the handheld communication device detects the authorisation signal sequence via the photo detector
Data Source
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Figure 3~4
Figure 5A~5E
AI summary
A method for authorising a handheld communication device to interact with an installation control system is described. The system comprises an installation (20), which is provided with a signal generator (26), and a validation server (40). The handheld communication device (10) is provided with a detector unit (12, 13, 14) for detecting signals from the signal generator (26). The method comprises the steps of: a) the installation control system generating and sending an authorisation signal sequence (42), b) the handheld communication device (10) detecting the authorisation signal sequence (42), c) the handheld communication device (10) transmits a handshake signal (44) based on the detected authorisation signal sequence (42) to the validation server (40), which is in communicative contact with the installation (20), and d) the installation control system authorising the handheld communication device (10) to interact with the installation (20), if the handshake signal matches a handshake pattern associated with the authorisation signal sequence (42).