EV Charging Space Detection Using Sensor Fusion
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Solution Overview
Problem
In complex parking lots, it is difficult to find available electric vehicle charging spaces, and existing solutions do not effectively address the issue of determining whether a charger is in use or if a vehicle is present in the space, leading to incorrect reporting and inefficient charging processes.
Innovation Solution
A method and system that uses an application server to receive parking lot data, check charger usage and vehicle presence through sensors and CCTV, select the nearest available space, and guide users to it, while also managing payment and charging status through OBD2 integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If users navigate to charging spaces based on charger operation status, then they can find charging spaces, but vehicles remain parked in charging spaces after charging completion causing incorrect reporting
Solution Approach 1:
The patent introduces a parking space detection module that uses sensors (ultrasonic, infrared, magnetic) as intermediaries to detect whether a vehicle is actually present in the charging space. This mediator system bridges the gap between charger status and actual space availability, providing accurate real-time information to prevent users from being directed to occupied spaces.
Solution Approach 2:
The patent replaces manual space monitoring and mechanical presence detection with electronic sensor-based detection systems. The ultrasonic, infrared, and magnetic sensors automatically detect vehicle presence and transmit data to the server, eliminating the need for manual checking and providing continuous automated monitoring of charging space status.
2Measurement precision
If multiple sensors are deployed to detect vehicle presence, then detection accuracy improves, but system complexity increases
Solution Approach 1:
The patent divides the detection system into multiple independent sensor modules (ultrasonic sensor, infrared sensor, magnetic sensor), each responsible for a specific detection function. This segmentation allows the system to achieve high detection accuracy through multiple independent verification channels while maintaining modular architecture that simplifies installation and maintenance.
Solution Approach 2:
The patent combines multiple types of sensors (ultrasonic, infrared, magnetic) into a unified detection system that works together to detect vehicle presence. By merging different sensing technologies, the system achieves comprehensive detection coverage and high accuracy while sharing common processing and communication infrastructure, thereby reducing overall system complexity.
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 real-time identification of available charging spaces, prevents incorrect reporting, and streamlines the charging process by ensuring accurate space selection and payment management, enhancing user experience and operational efficiency.
Implementation Method 1
checking whether the vehicle is present in the charging spaces having the available charger based on information received from an ultrasonic sensor
Implementation Method 2
checking whether the vehicle is present in the charging spaces having the available charger based on information received from an ultrasonic sensor, a geomagnetic sensor, or a CCTV installed in the parking lot
Data Source
AI summary
The present invention relates to a method for reporting an electric car charging space in a parking lot, the method comprising: identifying whether a charger of each of charging spaces in a parking lot is being used; identifying whether a car exists in each of the charging spaces; and selecting a chargeable space and reporting the selected chargeable space.