Vehicle-mounted device parking spot detection filtering
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Solution Overview
Problem
Conventional vehicle-mounted devices register idling stop operation points as past drop-in places, leading to inappropriate advertising information selection and limited registrable information, as these points are not substantial parking locations, causing valuable parking spot information to be overwritten with unnecessary data.
Innovation Solution
A vehicle-mounted device and roadside apparatus system that detects parking spots where the device was powered off, decides if they are appropriate as past drop-in places, and registers them only if they meet criteria such as parking duration, location type, and user-excepted areas, excluding idling stop operation points and other inappropriate locations from uplink information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If all powered-off points are registered as past drop-in places, then the quantity of past drop-in place information increases, but the quality and relevance of advertising information selection deteriorates due to inclusion of idling stop operation points
Solution Approach 1:
The invention extracts and removes idling stop operation points from the set of powered-off points before registering past drop-in places. By identifying characteristics specific to idling stops (such as location at intersections, short duration, or specific temporal patterns) and excluding these from registration, the system maintains a smaller but higher-quality set of past drop-in place information that is more relevant for advertising selection.
Solution Approach 2:
The invention applies different quality standards to different types of powered-off points. Instead of treating all powered-off points uniformly, the system evaluates each point's characteristics (location, duration, time of day) to determine whether it represents a substantial parking event or an idling stop, thereby assigning different registration statuses based on local quality assessment.
2Quantity of substance
If the number of registrable past drop-in places is limited, then storage capacity is preserved, but important parking spot information may be overwritten with unnecessary idling stop information
Solution Approach 1:
The invention performs preliminary filtering of powered-off points before they are registered in the limited storage capacity for past drop-in places. By pre-identifying and excluding idling stop operation points based on their characteristics (such as location at intersections, brief duration, or specific temporal patterns), the system ensures that only substantial parking events occupy the limited storage space, preventing overwriting of important information with unnecessary data.
3Ease of operation
If conventional vehicle-mounted devices register all powered-off points, then simplicity of operation is maintained, but accuracy of parking spot detection deteriorates due to inclusion of non-parking locations
Solution Approach 1:
The invention enables the vehicle-mounted device to automatically distinguish between substantial parking events and idling stop operation points using built-in sensors and algorithms. The system monitors characteristics such as duration, location, and temporal patterns to self-identify and exclude idling stops from past drop-in place registration, maintaining operational simplicity while improving detection accuracy without requiring manual user input.
Data Source
AI summary
An ITS vehicle-mounted device (17) sends/receives data in multi-content form. As a vehicle enters the communication area of a roadside apparatus (11), past drop-in place information is sent to the device (17) so that the driver can receive beneficial advertisement information. Places where the power of the ITS vehicle-mounted device (17) is turned off may be registered as past drop-in places contained in said past drop-in place information, and places of an idling stop may also be registered in the past drop-in place information. Highly accurate past drop-in place information can be produced by not registering when the stop time is short at a place where the power of the ITS vehicle-mounted device (17) is turned off or when a place is on the road right before an intersection as indicated by comparison with map data.