Load Chamber RFID Reading Control for Open-Door Misreads
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing reading controllers cannot distinguish between loads inside and outside a vehicle's load chamber when the door is open, leading to the reading of tags from unloaded loads.
Innovation Solution
A reading controller that determines the open or closed state of the load chamber door and adjusts the radio wave strength or sensitivity of communication elements to prevent reading of tags outside the chamber when the door is open.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the communication element reads tags with high radio wave strength when the door is open, then the reading range is extended, but tags outside the load chamber are incorrectly read
Solution Approach 1:
The patent applies dynamics by making the radio wave strength adjustable rather than fixed. The reading controller dynamically changes the radio wave emission strength based on door state detection - using high strength when the door is closed (to ensure complete reading within chamber) and low strength when the door is open (to prevent reading outside loads). This dynamic adaptation resolves the contradiction between reading range and reading accuracy.
Solution Approach 2:
The patent changes the parameter of radio wave strength based on the door state. When the door transitions from closed to open state, the system changes the radio wave emission parameter from high to low strength. This parameter change allows the system to maintain appropriate reading characteristics for different operational conditions, preventing misreading of outside tags while keeping the door open.
2Reliability
If the radio wave strength is reduced when the door is open, then outside tags are not read, but reading reliability within the chamber decreases
Solution Approach 1:
The system dynamically adjusts radio wave strength based on door state, ensuring high reading reliability when the door is closed and preventing outside tag reading when open. The door state detection triggers appropriate radio wave strength selection, maintaining reliability for legitimate reads while preventing false reads of outside tags.
Solution Approach 2:
The system uses feedback from door state detection to control radio wave emission strength. The door state sensor provides feedback about whether the door is open or closed, and the reading controller uses this feedback to automatically adjust the radio wave strength, ensuring appropriate reading conditions are maintained for the current operational state.
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
Prevents or reduces the reading of tags attached to loads outside the load chamber, improving the accuracy of identifying loaded and unloaded states within the chamber.
Implementation Method 1
a radio wave control part that controls radio wave strength of radio waves emitted by the communication element for reading the tag
Data Source
AI summary
A reading controller includes an open/closed state determination part that determines an open/closed state of a door of a load chamber of a vehicle, a tag information acquisition part that acquires tag information stored in a tag attached to a load, via a communication element that is installed in the load chamber and reads the tag, and a radio wave control part that controls a radio wave strength of radio waves emitted by the communication element for reading the tag to be a first radio wave strength when the open/closed state determination part determines that the door is in the closed state, and controls the radio wave strength to be a second radio wave strength, which is lower than the first radio wave strength, when the door is in the open state.