Wireless Tag Reader Power Control for POS and Server
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Solution Overview
Problem
Existing wireless tag reading apparatuses require manual adjustment of reading ranges, leading to potential errors due to operator mistakes or forgotten settings, affecting accuracy in commodity registration and inventory management processes.
Innovation Solution
A wireless tag reading apparatus with a controller that identifies the connected external device and adjusts the power level of the radio wave emitted by the antenna, setting a narrow range for POS terminal connections and a wide range for management server connections, thereby reducing the likelihood of erroneous readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual adjustment of reading range is implemented, then flexibility in setting reading range is improved, but operator mistakes and forgotten settings occur leading to reading errors
Solution Approach 1:
The wireless tag reading apparatus automatically determines and sets its own reading range based on the type of external device detected (POS terminal or management server), eliminating the need for manual operator intervention. The system serves itself by autonomously configuring the appropriate reading range (narrow for POS terminals, wide for management servers), thereby preventing operator mistakes while maintaining adaptability to different usage scenarios
Solution Approach 2:
The reading range parameter is dynamically changed based on the detected external device type. When a POS terminal is detected, the reading range is set to a narrow value; when a management server is detected, the reading range is expanded to a wide value. This automatic parameter adjustment resolves the contradiction by making the system both adaptable (different ranges for different devices) and reliable (no manual setting errors)
2Ease of operation
If fixed reading range is used, then setting simplicity is improved, but the system cannot adapt to different purposes (commodity registration vs. inventory management)
Solution Approach 1:
The reading range is made dynamic rather than fixed. The system automatically adjusts the reading range based on real-time detection of the external device type. This dynamic adjustment allows the system to maintain simplicity (no manual setting required) while achieving adaptability (different ranges for POS terminals and management servers)
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
Automatically adjusts the reading range based on the connected device, enhancing accuracy and reducing the possibility of reading errors in commodity registration and inventory management processes.
Implementation Method 1
an antenna configured to emit a radio wave to read a wireless tag
Data Source
AI summary
According to one embodiment, a wireless tag reading apparatus includes a first communication interface configured to communicate with a first external device, a second communication interface configured to communicate with a second external device, an antenna configured to emit a radio wave to read a wireless tag, and a controller. The controller is configured to identify either (a) the first communication interface as being in communication with the first external device or (b) the second communication interface as being in communication with the second external device. The controller is configured to change a power level of the radio wave emitted by the antenna based on which of the first communication interface or the second communication interface is identified. The controller is configured to read the wireless tag by controlling the antenna to emit the radio wave with the changed power level.