Pulsed Signal Generator for Low Power Wireless Transmission
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Solution Overview
Problem
The miniaturization of mobile apparatuses for wireless information transmission leads to limited battery size, necessitating a reduction in power consumption to maintain efficient information transmission.
Innovation Solution
An information transmitter apparatus that generates an information signal with pulses changing between states, where the time period for changing from one state to another is shorter for some pulses than the time period for changing back, utilizing a signal generator and a transmitting coil to produce a magnetic field, with the signal generator including a storage and a controller to manage the signal, and a capacitor connected in series to apply voltage, implementing a magnetic secure transfer scheme.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the battery size is reduced due to miniaturization of mobile apparatus, then the device becomes more compact, but the power consumption becomes a limiting factor
Solution Approach 1:
The patent applies periodic action by using pulsed signal transmission instead of continuous transmission. The signal generator outputs information signals in the form of pulses with specific time periods, where the transmitting coil generates magnetic fields periodically. This periodic operation allows the system to achieve necessary data transmission while minimizing the duration of high-power operation, thereby reducing overall power consumption in miniaturized devices with limited battery capacity.
Solution Approach 2:
The patent employs parameter changes by varying the time period parameters of the information signals. Specifically, it changes the duration for which the transmitting coil generates magnetic fields based on the information being transmitted. By optimizing these time period parameters, the system achieves efficient data transmission with minimized energy consumption, addressing the power consumption limitation in small battery devices.
2Speed
If the information signal changes state rapidly, then the transmission speed increases, but the power consumption increases due to higher voltage changes
Solution Approach 1:
The patent uses periodic action with carefully controlled pulse durations. The signal generator produces information signals with specific time periods where the state changes are confined to discrete intervals rather than continuous changes. This allows rapid state transitions when needed for data transmission while maintaining low power consumption by keeping the system in a quiescent state between pulses, effectively balancing transmission speed and power consumption.
Solution Approach 2:
The patent applies preliminary action by pre-defining the time period parameters of the information signals before transmission. The signal generator is configured with predetermined pulse widths and intervals that optimize the balance between transmission speed and power consumption. This preliminary configuration allows the system to achieve efficient operation without requiring real-time power management during transmission, reducing overall energy usage while maintaining adequate transmission speed.
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 reduces power consumption by minimizing the integration of the square of the voltage applied to the transmitting coil over time, thereby enhancing the efficiency of information transmission in mobile devices while maintaining data integrity.
Implementation Method 1
a transmitting coil configured to receive the information signal and generate a magnetic field based on the information signal
Data Source
AI summary
There are provided an information transmitter and an apparatus including the same. The information transmitter includes a signal generator configured to output an information signal including pulses changed from a first state to a second state or a third state and subsequently changed from the second state or the third state to the first state. A time period in which some of the pulses are changed from the first state to the second state or the third state may be shorter than a time period in which some of the pulses are changed from the second state or the third state to the first state. The information transmitter also includes a transmitting coil configured to receive the information signal and generate a magnetic field based on the information signal.