RFID Shot Tracking Circuit Power Management
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Solution Overview
Problem
Existing methods for measuring the motion of a golf club while conserving battery power are inadequate, as they fail to efficiently transmit RFID signals without draining the battery.
Innovation Solution
A method and circuit that charge a capacitor using a battery, with a load switch controlling power flow to a radiofrequency component, limiting peak current to 2 milliamps and deactivating the device after a threshold number of signals are transmitted without confirmation, thereby conserving battery power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RFID signals are transmitted frequently for accurate shot tracking, then measurement precision is improved, but battery power is depleted faster
Solution Approach 1:
The system transmits RFID signals periodically only during relevant golf swing events rather than continuously, achieving accurate shot tracking when needed while conserving battery power during non-active periods. The microprocessor controls the radiofrequency component to transmit signals at specific intervals triggered by swing detection.
Solution Approach 2:
The system dynamically adjusts transmission parameters including peak current limiting to 2 milliamps and operating at 2.4 GHz frequency, modifying signal characteristics to achieve reliable tracking with minimal power consumption. The capacitor charges at a controlled rate to provide necessary power bursts while preserving overall battery life.
2Duration of action of stationary object
If peak current is limited to conserve power, then battery life is extended, but signal transmission reliability may be reduced
Solution Approach 1:
The capacitor is charged in advance during low-power periods to store energy, enabling the system to deliver sufficient current bursts for reliable signal transmission when needed without requiring continuous high current draw that would deplete the battery.
Solution Approach 2:
The system receives confirmation signals to verify successful transmission, creating a feedback loop that ensures reliability. The microprocessor monitors transmission status and can adjust timing or retry transmissions to ensure reliable communication while maintaining power constraints.
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 allows for efficient transmission of RFID signals while significantly reducing power consumption, enabling prolonged device operation and accurate tracking of golf club motion without frequent recharging.
Implementation Method 1
charging a capacitor using a battery. The battery is in electrical communication with a resistor and the resistor is in electrical communication with a capacitor and a load switch
Implementation Method 2
A signal is transmitted from the radiofrequency component, wherein a peak current of transmission of the signal is limited to 2 milliamps. A confirmation signal is received at the radiofrequency component, wherein the radiofrequency component operates at 2.4 giga-Hertz
Data Source
AI summary
The present invention is a method for transmitting a RFID signal while conserving battery power of a circuit. The method comprises charging a capacitor using a battery. The battery is in electrical communication with a resistor and the resistor is in electrical communication with a capacitor and a load switch. The load switch is in electrical communication with an enabler and a microprocessor. The microprocessor is in electrical communication with a radiofrequency component. The load switch is closed, allowing power drawn from the capacitor to flow to the radiofrequency component.