Power Supply Voltage Sampling Across Active Timeslots
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Solution Overview
Problem
Current methods for accurately detecting the power supply voltage in communication devices, particularly NBIOT devices, result in low accuracy and large errors due to fluctuations in voltage during different operational states, leading to potential device malfunction and maintenance issues.
Innovation Solution
A communication device with voltage conversion circuits and a controller that collects and averages voltages across multiple timeslots to determine a stable real voltage, using a voltage sampling circuit to improve detection accuracy and trigger maintenance alerts when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If voltage is detected during idle timeslot, then power consumption is minimized, but voltage detection accuracy deteriorates due to virtual voltage not reflecting real status
Solution Approach 1:
The system performs voltage detection in advance during sending or receiving timeslots when the power supply is under load, obtaining a voltage value that reflects the real status before the idle timeslot occurs. This preliminary detection during active timeslots ensures accurate voltage measurement while still allowing the system to enter low-power idle state subsequently.
2Measurement precision
If voltage detection is performed during active timeslots, then real voltage status is reflected, but power consumption increases
Solution Approach 1:
The system performs voltage detection during sending or receiving timeslots, which are partial active periods within the communication cycle, rather than continuously during all active states. This partial action during specific timeslots provides sufficient real voltage status information while limiting the total detection time and associated power consumption.
3Speed
If single timeslot voltage detection is used, then detection speed is fast, but detection accuracy deteriorates due to voltage fluctuations
Solution Approach 1:
The system performs voltage detection across multiple periodic timeslots (either multiple sending timeslots or multiple receiving timeslots) and calculates an average value. This periodic action over multiple cycles filters out transient voltage fluctuations while maintaining efficient detection timing, achieving both speed and accuracy.
Solution Approach 2:
The system collects voltage values from multiple timeslots, processes them through averaging calculation, and uses the resulting stable voltage value for power supply status assessment. This feedback mechanism through multi-sample averaging eliminates the impact of single-timeslot voltage fluctuations and provides reliable detection results.
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
Enhances power supply voltage detection accuracy, reduces errors, and facilitates timely maintenance by accurately reflecting the real voltage status, preventing device rebooting and ensuring reliable operation.
Implementation Method 1
A voltage sampling circuit is coupled to the power supply, and/or the voltage sampling circuit is coupled to an output end of at least one of the one or more voltage conversion circuits
Data Source
AI summary
A communication device includes: one or more voltage conversion circuits. The one or more voltage conversion circuits are separately coupled to a power supply of the communication device. A voltage sampling circuit is coupled to the power supply, and/or the voltage sampling circuit is coupled to an output end of at least one of the one or more voltage conversion circuits. A controller is configured to: control the voltage sampling circuit to collect voltages output by the power supply or voltages output by a first voltage conversion circuit in a plurality of sending timeslots or a plurality of receiving timeslots of the communication device; and determine a real voltage of the power supply based on the voltages output by the power supply or the voltages output by the first voltage conversion circuit in the plurality of sending timeslots or the plurality of receiving timeslots of the communication device.