Compass Bird Sleep-Wake Control for Low-Power Depth Adjustment
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Solution Overview
Problem
The high power consumption and frequent battery replacement of compass birds used in marine seismic operations due to frequent adjustments in wing plate angles for maintaining depth at different depths, leading to inefficient operation.
Innovation Solution
Implementing a method and device that utilizes external interrupts to control the main control single-chip microcomputer and motor single-chip microcomputer into deep sleep modes, incorporating a peak detection circuit for communication carrier signal detection to activate data demodulation only when necessary, and a battery monitoring system to switch between primary and backup batteries based on voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the compass bird frequently adjusts wing plate angles to maintain depth at different depths, then the depth control capability is improved, but the power consumption increases and battery replacement frequency increases
Solution Approach 1:
The main control single-chip microcomputer operates in periodic cycles, alternating between deep sleep mode and working mode. It wakes up at predetermined time intervals to perform necessary control operations (such as adjusting wing plate angles for depth maintenance) and then returns to deep sleep mode. This periodic operation pattern enables the system to maintain depth control capability while significantly reducing average power consumption compared to continuous operation.
2Speed
If the main control single-chip microcomputer operates continuously to process tasks, then the response speed is improved, but the power consumption increases
Solution Approach 1:
The microcomputer uses periodic wake-up intervals to balance response speed and power consumption. By waking up at predetermined times to check for tasks and process interrupts, the system maintains adequate responsiveness while spending most time in low-power deep sleep mode, thereby reducing overall power consumption.
Solution Approach 2:
The system employs interrupt mechanisms that provide feedback when external events occur. When an interrupt signal is detected, the microcomputer wakes up from deep sleep mode to handle the task, ensuring timely response to external events while maintaining deep sleep state during idle periods to conserve energy.
3Reliability
If the data demodulation unit operates continuously to detect communication signals, then the communication reliability is improved, but the power consumption increases
Solution Approach 1:
The data demodulation unit operates periodically rather than continuously. It activates at predetermined intervals to detect communication carrier signals and then returns to idle state. This periodic operation maintains communication detection capability while significantly reducing power consumption compared to continuous operation.
Solution Approach 2:
A peak detection circuit serves as an intermediary between the communication signal and the data demodulation unit. The peak detection circuit continuously monitors for carrier signals with minimal power consumption and only activates the power-hungry data demodulation unit when a signal is actually present, thereby maintaining communication reliability while reducing overall power consumption.
Data Source
AI summary
The present application disclosure a method A method and device for controlling a compass bird. The method includes: a main control single-chip microcomputer entering a first deep sleep mode when not processing a task; the main control single-chip microcomputer switching from the first deep sleep mode to a first working mode after receiving an external interrupt signal; a peak detection circuit detecting whether there is a communication carrier signal; a data demodulation unit not starting if the peak detection circuit detects that there is no communication carrier signal; and the data demodulation unit starting to demodulate the communication carrier signal if the peak detection circuit detects that there is the communication carrier signal, and a communication demodulation module sending a demodulated signal to the main control single-chip microcomputer.