Wireless Power Receiver Timing Control for Unstable Sensor Charging
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Solution Overview
Problem
Existing wireless power supply systems face challenges in efficiently managing power consumption and ensuring stable power reception for sensors, particularly when using primary batteries, and there is a risk of missed sensing results due to variable power transmission.
Innovation Solution
A receiver system that includes a control unit with modules for voltage detection, threshold comparison, power reception state determination, and transmission timing control to optimize power usage and transmission intervals based on power reception state, allowing for stable operation and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the receiver transmits sensing results at fixed intervals, then data transmission is simple, but power consumption increases and transmission may occur during insufficient power reception
Solution Approach 1:
The patent applies dynamics by making the transmission interval variable rather than fixed. The control unit dynamically adjusts the transmission interval based on the power reception state detected from voltage measurements. When power reception is stable, transmissions occur at regular intervals; when power reception fluctuates, the interval extends automatically, preventing transmissions during insufficient power conditions and reducing overall power consumption.
Solution Approach 2:
The patent implements feedback by continuously monitoring the power reception state through voltage detection and using this information to control transmission timing. The control unit measures voltage at each intended transmission point, determines whether power reception is sufficient, and decides whether to proceed with transmission or extend the interval. This closed-loop feedback mechanism ensures transmissions only occur when power conditions are adequate.
2Use of energy by moving object
If communication interval is changed according to voltage value, then power consumption is reduced, but timing to transmit sensing result may be missed
Solution Approach 1:
The patent applies preliminary action by performing voltage detection before each intended transmission. The control unit checks the power reception state in advance by measuring voltage at the scheduled transmission point. Only if the voltage indicates sufficient power reception does the system proceed with transmission. This preliminary check prevents missed transmissions by ensuring power conditions are verified before committing to the transmission action.
Solution Approach 2:
The patent uses feedback to continuously monitor voltage levels and adjust transmission timing accordingly. When voltage indicates adequate power reception, transmission proceeds as planned. When voltage falls below thresholds, the system feedbacks this condition and extends the transmission interval, then continues monitoring. This ensures no sensing results are lost while adapting to actual power conditions.
3Ease of manufacture
If primary battery is equipped in receiver, then power supply is simple, but replacement is unavoidable and not practical for large scale deployment
Solution Approach 1:
The patent applies self-service by enabling the receiver to autonomously manage its own power consumption through intelligent transmission interval control. The control unit continuously monitors power reception state and automatically adjusts transmission timing without external intervention. This self-regulating mechanism extends operational duration by preventing transmissions during insufficient power conditions, eliminating the need for battery replacement while maintaining simple receiver configuration.
4Ease of operation
If transmission is performed at predetermined intervals, then transmission timing is simple, but transmission may occur when power reception is insufficient
Solution Approach 1:
The patent applies dynamics by transitioning from static fixed-interval transmission to dynamic adaptive-interval transmission. The control unit calculates transmission intervals based on real-time power reception state measurements. When power reception is stable, intervals remain short for frequent updates. When power reception becomes unstable, intervals automatically extend, preventing unreliable transmissions. This dynamic adjustment maintains operational simplicity while ensuring transmission reliability.
Solution Approach 2:
The patent implements feedback by measuring voltage at each intended transmission point and using this information to determine whether to proceed with transmission. The control unit receives feedback about power reception state and adjusts transmission timing accordingly. This feedback mechanism ensures transmissions only occur when power reception is sufficient, maintaining both simplicity and reliability.
Data Source
AI summary
A receiver for wirelessly receiving transmitting power includes a control unit, a charging unit charged by the transmitting power, a sensor configured to measure a physical quantity, and a transmitter configured to transmit the physical quantity. The control unit includes a voltage acquisition module to detect a charging voltage of the charging unit, a threshold comparison module to compare the voltage with a threshold, and a power receiving state determination module to determine a power receiving state based on the comparison. The control unit includes a transmission control module to determine whether transmission is permitted based on the state. A transmission timing control module causes the transmitter to transmit at a predetermined interval. If transmission is not permitted, the timing is delayed by a predetermined time. If the timing is consecutively delayed a predetermined number of times, the transmission is performed after a next predetermined transmission interval.