Magnetic Stripe Reader Power Saving Circuitry
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Solution Overview
Problem
Magnetic stripe reader devices face inefficiencies in power management, leading to unnecessary power consumption when not in use, which affects battery life and operational readiness.
Innovation Solution
Incorporation of power saving circuitry that puts the F2F decoder and microprocessor into a sleep mode when not in use and wakes them up in response to card swipe activity, utilizing a power saving module comprising a capacitor, resistor, micro power amplifier, comparator, and voltage divider to manage power flow effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the F2F decoder and microprocessor remain continuously powered on, then operational readiness is maintained, but power consumption increases reducing battery life
Solution Approach 1:
The system performs preliminary actions by entering sleep mode in advance during idle periods, and the power saving circuitry is pre-configured to automatically wake up the F2F decoder and microprocessor when card swipe activity is detected, eliminating the need to remain continuously powered on while maintaining operational readiness
Solution Approach 2:
The system implements periodic action by alternating between sleep mode during idle periods and active mode during card reading operations. The power saving circuitry enables periodic waking from sleep mode based on detected card swipe activity, creating a rhythm of power consumption that significantly extends battery life while maintaining operational readiness
2Use of energy by moving object
If the F2F decoder and microprocessor are put into sleep mode, then power consumption is reduced, but operational readiness deteriorates
Solution Approach 1:
The power saving circuitry implements feedback by continuously monitoring the input from the magnetic reader head for card swipe activity. When activity is detected, the circuitry provides feedback signals to wake up the F2F decoder and microprocessor, ensuring operational readiness is automatically restored without manual intervention while maintaining power savings during idle periods
Solution Approach 2:
The system implements self-service by enabling the power saving circuitry to automatically detect card swipe activity and wake up the sleeping components without external intervention. The circuitry serves itself by using its own monitoring capability to trigger the awakening process, eliminating the need for continuous powering while maintaining readiness
3Duration of action of moving object
If power saving circuitry is added to control power flow, then battery life is extended, but device complexity increases
Solution Approach 1:
The power saving circuitry acts as an intermediary component between the magnetic reader head and the F2F decoder/microprocessor. It mediates the power flow by conditionally enabling or disabling power supply based on detected card swipe activity, extending battery life while adding only the necessary intermediate control logic without significantly complicating the overall device architecture
Data Source
AI summary
A magnetic stripe reader including a magnetic reader head providing at least one data output, an F2F decoder receiving the at least one data output and providing a decoded data output, a microprocessor receiving and processing the decoded data output and power saving circuitry operative to control the operation of the F2F decoder and the microprocessor thereby to maintain the F2F decoder and the microprocessor in a power-saving sleep mode other than during magnetic stripe reading by the magnetic reader head and a selected time duration thereafter.