Dual Magnetic Sensor Area Recognition for Robot Travel Transitions
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Solution Overview
Problem
Existing area recognition systems for driverless vehicles require complex control logic to determine the order of detection of magnetic poles between different travel areas, complicating the movement recognition process.
Innovation Solution
An area recognition system using two magnetic members with opposite polarities disposed between travel areas, equipped with first and second magnetic sensors positioned differently along the robot's travel direction, simplifies the control logic by allowing simultaneous detection and recognition of travel area transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two magnetic members with different polarities are provided between travel areas to determine the travel area, then the area recognition function is achieved, but the control logic becomes complicated due to the need to determine detection order of the two magnetic poles
Solution Approach 1:
The patent divides the area recognition function into two independent detection channels by providing two separate magnetic sensors at different positions. Each sensor independently detects one magnetic member, and the control unit recognizes area transitions based on the combination of detection results without needing to determine temporal detection order, thus segmenting the complex recognition task into simpler parallel operations
Solution Approach 2:
Instead of using a single magnetic sensor that detects both magnetic members in sequence (requiring order determination), the patent inverts the approach by using two magnetic sensors that simultaneously detect each magnetic member independently. This reverses the detection paradigm from sequential single-sensor detection to parallel multi-sensor detection, eliminating the need for complex order-based logic
2Reliability
If extensive magnetic member coverage is provided between travel areas to ensure reliable detection, then the area recognition reliability is improved, but the system cost increases
Solution Approach 1:
The patent extracts the detection function from a single sensor and distributes it to two sensors positioned at different locations. Each sensor only needs to detect one magnetic member, reducing the detection burden on each individual sensor and allowing for more targeted, minimal magnetic member placement rather than extensive coverage
Solution Approach 2:
The patent applies local quality by positioning magnetic sensors at specific locations where they can optimally detect specific magnetic members. The magnetic members are strategically placed between travel areas at positions that correspond to the sensor locations, ensuring reliable detection with minimal magnetic material rather than uniform extensive coverage
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
Simplifies the control logic for recognizing travel area transitions, reduces the need for extensive magnetic member coverage, and lowers costs by enabling efficient area recognition without retaining detection results.
Implementation Method 1
a first magnetic sensor; a second magnetic sensor provided at a position different from a position where the first magnetic sensor is provided along a traveling direction of the robot; and a recognition unit configured to recognize a movement of the robot between the different travel areas by the first magnetic sensor detecting one of the two magnetic members and the second magnetic sensor detecting another of the two magnetic members
Data Source
AI summary
An area recognition system, an area recognition method, and a program that simplify a control logic for recognizing a movement between travel areas are provided. An area recognition system recognizes a travel area of a robot. A magnetic member having a first magnetic pole and a magnetic member having a second magnetic pole different from the first pole are disposed between different travel areas. The robot includes a first magnetic sensor, a second magnetic sensor provided at a position different from a position where the first magnetic sensor is provided along a traveling direction of the robot, and a recognition unit configured to recognize a movement of the robot between the different travel areas by the first magnetic sensor detecting the first magnetic pole and the second magnetic sensor detecting the second magnetic pole.