Seat Unit Wireless Communication Power Management
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Solution Overview
Problem
Existing communication systems for vehicles with slide seats quickly deplete battery power due to unnecessary communication between the slide seat and the vehicle, even when communication is not required.
Innovation Solution
A communication system that includes a seat unit with a control section, a switch input circuit, and a first power switch that switches from a standby state with constant power off to a normal state with intermittent power on, allowing the seat unit to transmit on-off signals only when necessary, thereby reducing continuous power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the seat unit continuously communicates with the vehicle unit, then communication availability is improved, but battery life deteriorates
Solution Approach 1:
The seat unit transitions between a standby state (low power consumption) and a normal state (communication active) based on periodic or event-driven triggers. The control section monitors for communication requests from the vehicle unit and only activates the switch input circuit and light detecting device when communication is actually needed, thereby extending battery life while maintaining communication availability when required.
2Speed
If the switch input circuit and light detecting device remain powered on, then response time to communication requests is improved, but power consumption increases
Solution Approach 1:
The seat unit maintains a standby state where the control section is prepared to quickly activate communication functions when needed. The control section continuously monitors for communication requests and can immediately transition to the normal state, ensuring rapid response time without requiring continuous powering of the switch input circuit and light detecting device.
3Ease of operation
If the first power switch remains constantly on, then the switch input circuit is always ready to receive signals, but battery exhaustion occurs quickly
Solution Approach 1:
The first power switch dynamically transitions between on and off states based on communication needs. During the standby state, the first power switch is off to conserve battery power. When the vehicle unit sends a communication request, the control section activates the first power switch to the on state, allowing the switch input circuit to receive and process signals. This dynamic switching resolves the contradiction between maintaining readiness and preventing battery exhaustion.
Data Source
AI summary
A communication system includes a seat unit, and a vehicle unit configured to wirelessly communicate with the seat unit. The seat unit includes a control section, a switch input circuit configured to output an on-off signal corresponding to an on-off state of a switch mounted on the seat, and a first power switch configured to turn power supply to the switch input circuit on and off. The vehicle unit is configured to transmit a start command. The control section is configured to switch, upon receipt of the start command during a standby state in which the first power switch is constantly turned off, to a normal state in which the first power switch is intermittently turned on, and to receive, after switching to the normal state, the on-off signal in response to turning on of the first power switch and to transmit the on-off signal to the vehicle unit.