Emergency Light Bar Manual Override Control
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Solution Overview
Problem
Conventional light bars lack the ability to manually set lighting patterns while simultaneously interpreting electrical system signals, and there is no harmonization of conflicting instructions from operators and automatic systems.
Innovation Solution
A light bar system with a circuit board and control box that includes a microprocessor to override automatic illumination, allowing manual override of lighting patterns via a wireless remote, and synchronizing with vehicle electrical systems for automatic operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the light bar automatically interprets signals from the vehicle electrical system, then the lighting operation is automated and convenient, but the operator cannot manually set specific lighting patterns
Solution Approach 1:
The light bar system dynamically switches between automatic and manual control modes. The microprocessor monitors vehicle electrical signals for automatic operation, but can be overridden by manual inputs from switches or remote controls to execute specific lighting patterns like emergency flashers or sequential running lights, allowing the system to adapt to different operational needs
2Ease of operation
If the light bar allows manual setting of lighting patterns, then the operator has control over lighting patterns, but the system cannot simultaneously interpret vehicle electrical system signals
Solution Approach 1:
The control system dynamically responds to different input types. When manual switches or remote controls are activated, the microprocessor executes the corresponding lighting pattern immediately. When no manual input is detected, the system automatically monitors and interprets vehicle electrical signals such as brake lights, turn signals, and reverse lights to control the light bar illumination
3Adaptability or versatility
If the light bar responds to both manual instructions and automatic signals simultaneously, then both control methods are available, but conflicts arise when both provide conflicting instructions
Solution Approach 1:
The microprocessor continuously monitors both manual switch positions and vehicle electrical signals, providing feedback control. When a manual input is detected, the system executes the manual lighting pattern and temporarily suspends automatic signal interpretation. When manual inputs are not present, the system automatically interprets vehicle signals. This feedback mechanism ensures that only one control mode is active at a time, preventing conflicting lighting patterns and ensuring reliable operation
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
Enables safe, customizable, and harmonized lighting on vehicles, improving safety and visibility with programmable LED patterns and automatic synchronization with vehicle signals.
Implementation Method 1
a plurality of light emitting diodes (LEDs) configured to transmit light from an outward facing surface of the circuit board
Data Source
AI summary
A light bar has a circuit board positioned within a housing and having a plurality of light emitting diodes (LEDs) configured to transmit light from an outward facing surface of the circuit board. The housing has wiring electrically connected to a controller. The controller is configured to receive signals from the electrical system of the vehicle, interpret the signals received from the electrical system of the vehicle, and in response automatically control illumination of independently controllable segments of the vehicle light bar. An override mechanism within the controller allows an operator to manually override the automatic response to control illumination of the independently controllable segments with a selected strobing pattern. The override mechanism may be tied into the electrical system of the vehicle such that both the LEDs on the vehicle light bar and the external lights of the vehicle are synced.