Inductive Loop Parking Detector for Cost-Effective Space Monitoring
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Solution Overview
Problem
Existing parking space detection systems are costly and complex, making them impractical for widespread use in parking garages and lots, as they require multiple sensors and complex communication systems, which are not economically viable for most facilities.
Innovation Solution
A cost-effective parking space detector system using inductive loop technology that monitors changes in magnetic fields to determine available spaces, with an optional signal boost mechanism to detect the last available space, and incorporates a training algorithm to improve accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual sensors are installed at each parking space to detect available spaces, then detection reliability is improved, but system cost and complexity increase significantly
Solution Approach 1:
The patent merges multiple individual sensor functions into a single inductive loop detector that monitors the entire parking space. Instead of using separate sensors for each parking spot, one loop detector spans multiple spaces and detects vehicle presence collectively, thereby reducing system complexity while maintaining detection reliability through integrated monitoring.
Solution Approach 2:
The inductive loop detector serves multiple functions: it detects vehicle presence, determines space availability, and can identify the number of occupied spaces within its monitoring area. This multi-functional approach eliminates the need for separate detection systems for each function, reducing overall system complexity.
2Measurement precision
If multiple sensors and communication systems are deployed to track each parking space, then measurement precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent employs inexpensive inductive loop technology that can be easily installed in the parking space flooring. The loops are simple electrical conductors embedded in the concrete, replacing expensive sensor systems. While individual loops are simple and low-cost, their collective deployment provides sufficient precision for parking space detection without the high manufacturing and installation costs of complex sensor arrays.
Solution Approach 2:
The patent replaces complex mechanical and electronic sensor systems with electromagnetic inductive loops. Instead of using physical sensors that require mounting, wiring, and calibration, the system uses electromagnetic fields embedded in the flooring, significantly simplifying installation and reducing costs while maintaining detection precision.
3Productivity
If conventional intelligent parking systems are implemented to provide exact open space location, then productivity is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies partial monitoring by using inductive loops that can detect the number of vehicles in a space without requiring precise identification of each vehicle's position or type. This partial action approach provides sufficient information for parking management (occupied vs. available) without the excessive complexity of tracking individual vehicle locations and characteristics.
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
Provides reliable and cost-effective detection of available parking spaces, enabling drivers to find empty spots efficiently while also being adaptable for various inventory control applications, such as tracking equipment in hospitals and construction yards.
Implementation Method 1
an inductive loop detector which can monitor the change in inductance of a magnetic field that is generated by the loop as cars of various sizes and weights enter the looped area
Data Source
AI summary
Disclosed is an inventory control system or parking space detector including an inductive loop technology that is either embedded in the concrete or located atop the concrete, or any other feasible method of setting an inductive loop. By monitoring the change in inductance of the magnetic field that is generated by the loop as cars of various sizes and weights enter the looped area, a determination of whether or not the inventory is controlled or the parking spaces are all full is made when the inductance value reaches a certain predetermined level. This predetermined level will be determined by calibration in the initial installation in order to determine the exact inductance values when a group of parking spaces are full.