Infrared Traffic Light Communication System for Driver Visibility
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Solution Overview
Problem
Drivers face difficulties in clearly seeing traffic lights at intersections due to factors like winding roads, obstacles, bad weather, and light pollution, which can lead to unsafe driving decisions.
Innovation Solution
The system uses infrared transmitters to send coded binary signals to vehicles, which are received by infrared sensors and displayed on LED displays inside the vehicle, providing visual and audio indications of traffic light conditions, allowing drivers to maintain focus on the road while receiving essential traffic information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drivers rely on direct visual observation of traffic lights, then the system is simple and energy-efficient, but visibility is compromised by winding roads, obstacles, bad weather, and light pollution
Solution Approach 1:
The patent introduces an intermediary communication system using infrared transmitters and receivers. The transmitter sends encoded traffic light status signals through the air to a receiver in the vehicle, which then displays the information. This intermediary channel bypasses the problematic direct visual path blocked by obstacles, weather, and environmental factors, reliably delivering traffic light information without requiring the driver to directly observe the physical traffic light.
Solution Approach 2:
The patent replaces the mechanical/optical direct-observation system with an electromagnetic communication system. Instead of relying on light reflection and direct vision, the system uses infrared electromagnetic waves to transmit data. This substitution allows information to penetrate through obstacles, fog, rain, and other environmental conditions that block optical paths, thereby improving reliability under diverse operating conditions.
2Reliability
If drivers look away from the road to check traffic lights clearly, then traffic light visibility improves, but driving safety decreases
Solution Approach 1:
The patent implements preliminary action by displaying traffic light status information in advance within the vehicle before the driver reaches the intersection. The infrared receiver captures the traffic light status early, and the display shows the upcoming light condition (red, yellow, green) ahead of time, allowing the driver to prepare for the intersection without needing to look at the actual traffic light. This eliminates the need for the driver to divert attention from the road.
Solution Approach 2:
The system provides continuous feedback to the driver about the upcoming traffic light status through the display system. The display updates in real-time based on the infrared signal received from the traffic light controller, giving the driver immediate feedback about the current and upcoming light conditions. This feedback loop allows the driver to maintain focus on the road while being fully informed about traffic light status, eliminating the trade-off between looking at the light and maintaining driving safety.
3Loss of information
If traditional traffic lights are used without additional communication, then the system remains simple, but drivers lack information about traffic light conditions under adverse conditions
Solution Approach 1:
The patent makes the traffic light system universal by integrating multiple functions into a single coordinated system. The infrared transmitter not only communicates traffic light status but also can convey additional information such as time remaining until light change, intersection details, and weather conditions. The receiver and display system handle both the primary traffic light status and supplementary information, making the system multi-functional and adaptable to various information needs without requiring separate dedicated systems for each function.
Solution Approach 2:
The patent utilizes parameter changes in the infrared signal encoding to convey different types of information. By varying parameters such as pulse width, frequency, or signal duration in the infrared code, the system can represent different traffic light states and additional information. This efficient use of signal parameter variation allows rich information delivery without proportionally increasing system complexity, as the same infrared communication infrastructure handles both basic status and enhanced information.
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 solution enhances driver safety by providing clear and directed traffic information, reducing the risk of accidents caused by unclear traffic light visibility and allowing drivers to make informed decisions without taking their eyes off the road.
Implementation Method 1
at least one infrared transmitter associated with each traffic light, the infrared transmitter configured to send an infrared beam directed at the vehicular traffic facing the associated traffic light
Implementation Method 2
Each car has an infrared receiver coupled to an LED display, the infrared receiver configured to convert the binary infrared signal received from the infrared transmitter into the corresponding visual indication on the LED display
Implementation Method 3
the LED display capable of displaying audio and/or visual indications equivalent to the traffic modes (or color) of the traffic lights
Data Source
AI summary
A traffic control system consisting of sets of traffic lights each capable of energizing a red, yellow or green traffic light in accordance with the commands issued by an electric traffic controller. The traffic controller being operatively coupled to at least one infrared transmitter configured to send out coded binary infrared signals which are coordinated to match the traffic mode of the associated traffic lights. The infrared signals being beamed by the infrared transmitter to the vehicular traffic in front of the corresponding traffic light. One or more of these vehicles having an infrared receiver coupled to an LED display, the LED display capable of displaying a red, yellow or green light. The infrared receiver configured to decode the coded binary signals sent by the infrared transmitter and capable to activate a LED light in the vehicle display that will match the color of the corresponding traffic light that is energized at any given time.