Exercise Track Recording MCU and Application Processor Power Management
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Solution Overview
Problem
The high power consumption and short battery endurance of mobile devices during exercise track recording processes due to frequent GPS data transmission and processing by the application processor.
Innovation Solution
Implementing a method where the MCU processes GPS data using a simplified positioning algorithm and stores it, then sends it to the application processor in batches, allowing the processor to enter a sleep state, reducing power consumption and improving battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the application processor continuously receives and processes GPS data every second, then the exercise track recording accuracy is maintained, but the power consumption increases and battery endurance decreases
Solution Approach 1:
The patent introduces an MCU (microcontroller unit) as an intermediary component between the GPS chip and the application processor. The MCU receives GPS data from the GPS chip, processes it using a positioning algorithm, and then sends the processed location information to the application processor. This intermediary role allows the application processor to remain in a low-power sleep state while still achieving accurate exercise track recording, as the MCU handles the continuous GPS data reception and processing at a lower power level.
2Speed
If the application processor remains in wake-up state to process GPS data every second, then the real-time exercise track display is achieved, but the battery endurance is reduced
Solution Approach 1:
The patent implements periodic action by having the application processor wake up at predetermined time intervals to receive batches of processed location information from the MCU, rather than continuously processing GPS data every second. The MCU continuously receives and processes GPS data in the background, and the application processor periodically synchronizes with the MCU to update the exercise track display. This periodic interaction maintains real-time display functionality while allowing the application processor to spend most time in low-power sleep state, thereby extending battery endurance.
3Measurement precision
If the GPS data is processed by the application processor every second, then the positioning accuracy is maintained, but the device complexity and power consumption increase
Solution Approach 1:
The patent applies segmentation by dividing the GPS data processing function into two separate components: the MCU and the application processor. The MCU handles the continuous reception and initial processing of GPS data using a positioning algorithm, while the application processor handles higher-level tasks such as displaying the exercise track on a map and providing user interface functions. This segmentation allows each component to perform its specific function efficiently, maintaining positioning accuracy while reducing overall system complexity and power consumption compared to having the application processor handle all processing tasks alone.
Data Source
AI summary
An exercise track recording method and a related device are provided. The exercise track recording method includes: recording, by an electronic device, an exercise track in a first mode (S102); recording the exercise track in a second mode when a first condition is met (S103); and when a second condition is met, sending stored processed GPS data of at least two location points to an application processor, and recording the exercise track in the first mode (S104). According to the method, the application processor can enter a sleep state when the exercise track is recorded in the second mode, to reduce power consumption.