Voltage Pump Battery Status Detection via Control Signal Sampling
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Solution Overview
Problem
Existing battery-powered devices face increased cost and complexity due to the need for additional components like analog-to-digital converters and coulomb counters to monitor battery status, which are often absent in these devices.
Innovation Solution
Monitoring the operation of a voltage pump, specifically during periods of heavy consistent load, by sampling a control signal to determine battery status without requiring an A to D converter or coulomb counter, using a microprocessor to analyze the voltage pump's operation over one or multiple monitoring periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional components like A to D converters or coulomb counters are used for low battery detection, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The voltage pump performs dual functions: voltage regulation and self-diagnosis. By monitoring its own operational parameters (switching frequency, duty cycle), the voltage pump automatically detects battery status without requiring external detection components,实现ing self-service functionality
Solution Approach 2:
The voltage pump is designed to perform multiple functions: voltage regulation for the load and simultaneous battery status detection. The control circuit that already exists for voltage pump operation is also used to monitor battery conditions, making the voltage pump a universal component that serves both power management and diagnostic purposes
2Measurement precision
If additional components like A to D converters or coulomb counters are used for low battery detection, then measurement precision is improved, but manufacturing cost increases
Solution Approach 1:
The voltage pump is designed to perform multiple functions: voltage regulation for the load and simultaneous battery status detection. The control circuit that already exists for voltage pump operation is also used to monitor battery conditions, making the voltage pump a universal component that serves both power management and diagnostic purposes
Solution Approach 2:
The voltage pump performs dual functions: voltage regulation and self-diagnosis. By monitoring its own operational parameters (switching frequency, duty cycle), the voltage pump automatically detects battery status without requiring external detection components,实现ing self-service functionality
3Reliability
If voltage pump operation is monitored during heavy load periods, then reliability of battery status determination is improved, but loss of time increases
Solution Approach 1:
The system performs battery status monitoring periodically during heavy load periods rather than continuously. The microcontroller samples the voltage pump's operational parameters at specific intervals when the load is heavy, which are the most indicative periods for battery status determination, thereby reducing overall monitoring time while maintaining reliability
Solution Approach 2:
The system proactively monitors battery status during heavy load periods before the battery is fully depleted. By detecting changes in voltage pump operation during these critical periods, the system can alert users in advance, allowing them to recharge or replace the battery before complete discharge occurs
Data Source
AI summary
Systems and methods for monitoring a voltage pump to determine the status of a battery connected to the voltage pump are provided. The operation of the voltage pump is monitored during at least one monitoring period which corresponds to a period of relatively heavy consistent load. The operation of the voltage pump can be monitored by sampling a control signal that corresponds to the operation of the voltage pump.