Vehicle Map Display Range Calculation with Equipment Energy
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Solution Overview
Problem
Existing map display devices for mobile units, such as vehicles, do not account for the dynamic energy consumption of equipment like air conditioners, wipers, and headlights, leading to an inability to accurately inform users of the varying travel range based on these factors.
Innovation Solution
A map display device that includes a position information acquiring unit, a map data storage unit, a remaining energy acquiring unit, a range calculating unit, and an output control unit, which computes and displays the reachable range of a mobile unit by considering the energy consumption rates of both the vehicle and mounted equipment, dynamically updating the display based on user interactions and energy usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the map display device only considers remaining battery life or fuel for calculating reachable range, then the calculation is simple, but it cannot accurately reflect the dynamic energy consumption of equipment like air conditioners, wipers, and headlights
Solution Approach 1:
The patent segments the total energy consumption into multiple components: base energy consumption of the mobile unit and additional energy consumption from each piece of equipment (air conditioner, wipers, headlights, etc.). By dividing the energy consumption calculation into separate measurable components, the system achieves higher precision in reachable range calculation while managing complexity through modular measurement of individual equipment energy usage.
2Loss of information
If the map display device dynamically updates the reachable range based on equipment energy consumption, then the information accuracy improves, but the calculation and update frequency requirements increase
Solution Approach 1:
The patent implements periodic updates of the reachable range information on the map display, triggered by changes in equipment status or at regular intervals. This periodic action ensures that energy consumption information remains complete and accurate while allowing the calculation system to operate at manageable frequencies rather than requiring continuous real-time computation.
3Use of energy by moving object
If the map display device calculates reachable range considering all equipment energy consumption, then the energy utilization efficiency improves, but the device complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where the map display device continuously monitors the actual energy consumption of equipment and compares it with the calculated reachable range. This feedback loop allows the system to optimize energy utilization by providing users with accurate information about their energy status and reachable destinations, enabling them to make informed decisions about equipment usage and routing while managing system complexity through established monitoring and control protocols.
Data Source
AI summary
A map display device includes a position information acquiring unit for acquiring the present position of a vehicle; a map data storage unit for storing map data; a remaining energy acquiring unit for acquiring a residual quantity of energy for driving the vehicle and equipment mounted on the vehicle; a range calculating unit for computing a range the vehicle can travel with the remaining energy, using a moving energy consumption rate which is energy consumption per unit time required for moving the vehicle and a driving energy consumption rate Eci which is energy consumption per unit time required for driving the equipment mounted on the vehicle; and an output control unit for displaying the range on a map using the map data.