Vehicle Auxiliary Lamp Lighting Control for Bank Angle
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Solution Overview
Problem
Riders experience discomfort due to abrupt lighting of auxiliary lamps when a vehicle banks, and existing solutions do not effectively illuminate regions to be turned while minimizing glare for oncoming traffic.
Innovation Solution
A vehicle with a head lamp, an auxiliary lamp, a bank state detecting section, and a lighting control section that adjusts the auxiliary lamp's luminosity and timing based on the vehicle's bank state, ensuring it is lit in a preceding state before reaching the set bank state to reduce discomfort and glare for oncoming traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the auxiliary lamp is lighted when the vehicle body is banked at a predetermined bank angle, then the region to be turned can be irradiated with light, but the rider feels discomfort due to abrupt lighting
Solution Approach 1:
The auxiliary lamp is lighted in a preceding lighting state at a predetermined preceding bank angle that occurs before the vehicle body reaches the predetermined set bank angle. This preliminary action ensures that the lamp is already illuminated when the rider needs to see the turning region, eliminating the abrupt lighting effect that causes discomfort.
Solution Approach 2:
The lighting control section dynamically adjusts the lighting state of the auxiliary lamp based on the detected bank angle. The system transitions between different lighting states (preceding lighting state at the preceding bank angle and set lighting state at the set bank angle) to adapt to the vehicle's banking motion, providing smooth and comfortable illumination for the rider.
2Illumination intensity
If the auxiliary lamp is lighted at high luminosity to illuminate the turning region, then the rider can see clearly, but oncoming traffic is bothered by glaring light
Solution Approach 1:
The auxiliary lamp provides localized illumination to the specific region that the vehicle is turning toward, rather than illuminating all directions equally. The lighting is directed precisely where needed for the rider's visibility while minimizing light projection into areas where oncoming traffic would be affected, thus reducing glare.
Solution Approach 2:
The auxiliary lamp is activated in a preceding lighting state before the vehicle reaches the full set bank angle. This timing allows the lamp to provide necessary illumination for the turning region while the vehicle is still in the process of banking, thereby reducing the intensity and duration of potential glare to oncoming traffic compared to activating at full bank angle.
3Device complexity
If the auxiliary lamp is lighted abruptly at set bank angle, then the lighting control is simple, but the brightness change causes rider discomfort
Solution Approach 1:
The system activates the auxiliary lamp in a preceding lighting state at a predetermined preceding bank angle before the set bank angle is reached. This preliminary activation creates a gradual transition in brightness rather than an abrupt change, reducing rider discomfort while maintaining relatively simple lighting control logic based on bank angle detection.
Data Source
AI summary
A vehicle comprises a head lamp which irradiates a head lamp irradiation region set in front of a vehicle body; an auxiliary lamp which irradiates an auxiliary lamp irradiation region set in front of the head lamp irradiation region; a bank state detecting section which detects a bank state of the vehicle body; and a lighting control section which lights the auxiliary lamp depending on the bank state, the lighting control section causes the auxiliary lamp to be lighted in a set lighting state when the bank state detecting section detects a predetermined set bank state, and the lighting control section causes the auxiliary lamp to be lighted in a preceding lighting state at luminosity lower than that of the set lighting state, when the bank state detecting section detects a preceding bank state which occurs before the vehicle body reaches the set bank state.