LED Lighting Circuit for Motorcycle Erroneous Lighting Prevention
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Solution Overview
Problem
Existing light emitting diode (LED) lighting circuits for saddle-ride-type vehicles, such as motorcycles, face issues with erroneous lighting due to leak currents, which also lead to heat generation in resistance components used for preventing such errors.
Innovation Solution
A light emitting diode lighting circuit that includes a control means with an input port, an input circuit part to determine the leak state of a manipulation switch, and an intermittent power source switch that cyclically turns on and off, reducing heat generation and preventing erroneous lighting by using an erroneous lighting prevention resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reference resistance is continuously connected to prevent erroneous lighting caused by leak current, then the reliability of the lighting circuit is improved, but heat is generated due to continuous electric current flow through the resistance
Solution Approach 1:
The patent applies periodic action by cyclically switching the reference resistance connection on and off. The control unit activates the reference resistance only during specific detection periods to check for leak current, rather than maintaining continuous connection. This periodic activation prevents erroneous LED lighting while significantly reducing heat generation in the resistance component.
2Measurement precision
If a resistance is used to detect leak state of the manipulation switch, then the measurement precision of switch state is improved, but energy is consumed continuously by the resistance
Solution Approach 1:
The control unit implements periodic detection by cyclically activating the reference resistance to measure voltage and determine switch leak state. This periodic measurement approach maintains detection precision while minimizing energy consumption compared to continuous monitoring.
Solution Approach 2:
The system dynamically adjusts the detection process by using the control unit to manage when the reference resistance is activated. The detection timing and duration are optimized to achieve sufficient measurement precision while consuming minimal energy, making the system adaptable to different operational conditions.
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
The solution effectively prevents erroneous LED lighting while reducing heat generation, enhancing detection accuracy and allowing for the use of non-waterproof switches, thereby simplifying control specifications and reducing the risk of mischievous activation.
Implementation Method 1
a light emitting diode lighting circuit of a saddle-ride type vehicle... turns on a lamp formed of a light emitting diode
Implementation Method 2
heat is generated in the reference resistance Rref due to an electric current which flows at the time of generation of a leak current
Data Source
AI summary
A method and apparatus for controlling lighting in a saddle-ride type vehicle includes a control unit configured to turn on a lamp comprising a light emitting diode. The apparatus also includes a manipulation switch which is turned on and off based upon manipulation by a rider. The control unit includes an input port receiving power from a power source based upon actuation of the manipulation switch, and an input circuit configured to determine a leak state of the manipulation switch based on an input voltage to the input port. A control part is configured to control lighting of the lamp based on a result of the determination. An erroneous lighting prevention resistance is connected between the manipulation switch and input circuit on one end, and ground on the other end. An intermittent power source switch is configured to be cyclically turned on or off by the control part, and is provided between the manipulation switch and the power source.