Wireless Transit Sign Control With Secure Device Pairing
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Solution Overview
Problem
Existing hardwired systems for controlling electronic signs on transit vehicles are costly, add weight, and are difficult to maintain due to the need for physical wiring, increasing fuel consumption and operational costs.
Innovation Solution
A wireless communication system using a master controller and peripheral devices with unique identification, allowing for wireless protocol configuration and restricted communication, enabling wireless command execution without physical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hardwired systems are used to control electronic signs, then reliable communication is achieved, but weight and installation complexity increase
Solution Approach 1:
The patent replaces the mechanical wiring system with a wireless communication system. The master controller and peripheral devices communicate via wireless signals (RF, infrared, or other electromagnetic waves) instead of physical wires, eliminating the weight of wiring while maintaining communication reliability through protocol-level error handling and acknowledgment mechanisms.
Solution Approach 2:
The patent introduces wireless communication protocols and signal processing mechanisms as intermediaries between the master controller and peripheral devices. These intermediaries enable reliable data transmission without direct physical connections, using techniques like error detection, retransmission, and signal validation to ensure communication integrity.
2Reliability
If hardwired systems are used to control electronic signs, then stable communication is achieved, but installation and maintenance difficulty increase
Solution Approach 1:
The patent eliminates the mechanical wiring infrastructure that complicates installation and maintenance. By using wireless communication, technicians can configure and troubleshoot systems without physically accessing or manipulating wires, significantly improving ease of repair and system maintenance while maintaining communication stability through software-based error handling.
Solution Approach 2:
The wireless communication system provides multiple functions through a single communication channel, including data transmission, device identification, configuration updates, and diagnostic capabilities. This multi-functionality simplifies maintenance operations compared to dedicated hardwired connections for each function.
3Ease of operation
If hardwired systems are used to control electronic signs, then direct control is achieved, but fuel consumption increases
Solution Approach 1:
The patent replaces the physical wiring system with wireless communication, eliminating the weight of wires and associated hardware. This weight reduction directly decreases the energy required to transport the transit vehicle, thereby reducing fuel consumption while maintaining direct control capabilities through low-latency wireless communication protocols.
4Weight of moving object
If wireless communication is used to control peripheral devices, then weight and installation cost are reduced, but communication security may be compromised
Solution Approach 1:
The patent implements wireless communication protocols with built-in security intermediaries, including unique device identification, authentication mechanisms, and encrypted communication channels. These intermediary layers verify the legitimacy of communicating devices and protect against unauthorized access, maintaining communication security without requiring physical wiring.
Solution Approach 2:
The patent assigns unique identification and configuration characteristics to each peripheral device and master controller. This local quality differentiation enables selective communication and authentication, ensuring that only authorized devices can join the wireless network and receive commands, thereby securing communication while maintaining the weight advantages of wireless operation.
Data Source
AI summary
A system includes a master controller disposed on a transit vehicle, a peripheral device disposed on the transit vehicle, a first wireless subsystem communicably coupled to the master controller, and a second wireless subsystem communicably coupled to the peripheral device. The master controller is operable to send a signal to the peripheral device via the first wireless subsystem, the signal comprising a command related to operation of the peripheral device. The peripheral device is operable to receive the signal via the second wireless subsystem and execute the command. The system utilizes a wireless protocol that specifies a unique identification for the system. The master controller and the peripheral device are each configured via the wireless protocol. The configuration includes storage of the unique identification and operability to restrict wireless communication to wireless communication with other devices so configured.