Contactless Data Carrier Clock Frequency Adjustment
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Solution Overview
Problem
Contactless data carriers face performance fluctuations and power consumption issues due to fixed or randomly varying clock frequencies, leading to errors and potential failure, especially when the field strength decreases with distance from the reader, causing inefficient energy use and complex circuitry.
Innovation Solution
Implementing a method where the contactless data carrier performs a restart and a second setting of its internal clock frequency, delaying performance adjustment until it is closer to the reader, thereby increasing field strength and allowing for higher clock frequencies, thus optimizing performance without additional complex regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the clock frequency is increased to improve processing speed, then productivity is improved, but power consumption increases beyond available energy from the electromagnetic field
Solution Approach 1:
The clock frequency is made dynamically adjustable based on the detected field strength. The system continuously monitors the electromagnetic field strength and adapts the clock frequency accordingly, allowing the contactless data carrier to operate at higher frequencies when energy is abundant and lower frequencies when energy is scarce, thus optimizing processing speed within available power constraints
Solution Approach 2:
The system changes the operational parameters (clock frequency) based on the detected field strength conditions. By monitoring field strength and adjusting the clock frequency parameter dynamically, the system optimizes the balance between processing speed and power consumption without requiring complex additional circuitry
2Adaptability or versatility
If the clock frequency is constantly adjusted to adapt to field strength changes, then adaptability is improved, but device complexity and susceptibility to interference increase
Solution Approach 1:
The contactless data carrier performs self-adjustment of its clock frequency by autonomously detecting the field strength and internally modifying its operational parameters. This self-service mechanism eliminates the need for external control circuits or complex regulation systems, reducing device complexity while maintaining adaptability to varying field conditions
3Stability of the object's composition
If the contactless data carrier is introduced slowly into the electromagnetic field, then stability is improved, but the field strength remains low causing lower clock frequency and performance
Solution Approach 1:
The system dynamically adjusts the clock frequency based on real-time field strength detection rather than relying on a fixed introduction speed. This allows the contactless data carrier to achieve optimal performance regardless of whether it is introduced slowly or quickly into the electromagnetic field, as the clock frequency automatically adapts to the current field conditions
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
This approach enables higher and optimized performance of the contactless data carrier with reduced power consumption and maintenance, ensuring stable operation and faster query processing without complex circuitry, while maintaining uninterrupted energy supply.
Implementation Method 1
To operate a chip on the contactless data carrier, it draws energy from the electromagnetic field
Implementation Method 2
an internal clock frequency, which depends on the field strength of an electromagnetic field, is set
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a method for optimizing card performance in a contactless data carrier (1) and a contactless card (1). The contactless data carrier (1) performs a first adjustment (30) of an internal clock frequency. The internal clock frequency depends on the field strength of an electromagnetic field (3). The contactless data carrier (1) then restarts (60). Subsequently, the contactless data carrier (1) performs a second adjustment (30) of the internal clock frequency. The contactless data carrier (1) receives (40, 140) a query and generates (65) a response to the query.