Transceiver Sleep Mode Power Reduction via Signal Bypass
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Solution Overview
Problem
In vehicle communication systems, transceivers operating in sleep mode continue to consume significant power due to the need to receive and process start signals, which is inefficient in terms of power management.
Innovation Solution
A transceiver design that includes mode-setting functionality to switch between normal and sleep modes, where in sleep mode, the encoding and decoding functions are halted, allowing for reduced power consumption by bypassing the encoding and decoding circuits and stopping the generation of timing signals, enabling the transmission and reception of start signals without active encoding or decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transceiver is operated continuously to receive start signals in sleep mode, then the reliability of receiving start signals is improved, but the power consumption increases significantly
Solution Approach 1:
The transceiver is divided into two independent operational paths: a sleep mode path that only handles start signal reception, and a normal mode path that handles full encoding/decoding communication. This segmentation allows the system to activate only the necessary components based on operational requirements, resolving the contradiction between maintaining start signal reception capability and reducing power consumption.
Solution Approach 2:
The transceiver dynamically switches between two operational states (sleep mode and normal mode) based on external mode setting signals. In sleep mode, only the start signal reception function is active; in normal mode, the full encoding/decoding functionality is activated. This dynamic adaptability allows the system to optimize power consumption while maintaining necessary functionality.
2Use of energy by moving object
If the encoding and decoding functions are stopped in sleep mode to reduce power consumption, then the power consumption is reduced, but the ability to transmit and receive encoded communication data is lost
Solution Approach 1:
The transceiver employs dynamic operational mode switching that adapts its functionality based on external control signals. The system can be externally configured to operate in sleep mode (with limited start signal reception) or normal mode (with full encoding/decoding capability), providing adaptability across different operational requirements while optimizing power consumption.
Solution Approach 2:
The transceiver is designed with multi-functionality, capable of operating in at least two distinct modes: sleep mode for minimal power consumption with start signal reception, and normal mode for full communication functionality. This universal design allows the same hardware to serve multiple operational purposes depending on the mode setting.
Data Source
AI summary
An encoding circuit encodes a NRZ code into a transmission line code. A decoding circuit decodes the transmission line code into a NRZ code. If an operation-mode specified by a setting signal is a normal-mode, a transmission switching circuit provides transmit-data received from an input terminal to the encoding circuit to output the encoded transmit-data as communication-data from a communication terminal. If the operation-mode is a sleep-mode, the transmission switching circuit outputs the transmit-data received from the input terminal as the communication-data from the communication terminal. If the operation-mode specified by the setting signal is a normal-mode, a reception switching circuit provides the communication-data received from the communication terminal to the decoding circuit to output the decoded communication-data as receive-data from an output terminal. If the operation-mode is a sleep-mode, the reception switching circuit outputs the communication-data received from the communication terminal as the receive-data from the output terminal.