Device Control System Using Position Detection for Energy Savings
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Solution Overview
Problem
Conventional device control systems activate devices based on reservation start times, leading to unnecessary energy consumption and safety concerns due to potential user absence.
Innovation Solution
A device control system that uses location and user position information to determine if a user is present before activating connected devices, incorporating a reservation unit, determination unit, control information generation unit, and device control unit to synchronize device operation with user arrival.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If device control is performed based on reservation start time, then device operation is synchronized with scheduled meetings, but energy consumption increases and safety deteriorates when users do not arrive
Solution Approach 1:
The system performs preliminary actions by determining user position and predicting arrival time before the reservation start time. The determination unit checks whether the user is within a predetermined distance from the conference room at a predetermined time before the reservation, and predicts arrival time based on current position and moving speed. This allows the system to activate devices only when the user is actually approaching, rather than at the scheduled reservation time, thus preventing unnecessary energy consumption while maintaining safety through user presence verification.
2Ease of operation
If device control is performed in advance according to reservation time, then user convenience is improved by having devices ready, but unnecessary energy consumption occurs when user arrival is delayed
Solution Approach 1:
The system dynamically adjusts device activation timing based on real-time user position and movement data. Instead of using a fixed reservation start time, the control unit activates devices when the determination unit confirms the user is within the predetermined distance and the predicted arrival time matches the reservation time. This dynamic approach ensures devices are activated at the optimal moment for user convenience while avoiding premature activation that would waste energy.
Solution Approach 2:
The system continuously monitors user position information and moving speed, then uses this feedback to adjust the predicted arrival time and determine whether to activate devices. The determination unit receives real-time position data, calculates arrival time based on current speed and distance, and compares this with the reservation time. This feedback loop allows the system to make informed decisions about device activation, ensuring energy efficiency while maintaining user convenience.
3Loss of energy
If device activation is delayed until user arrival is confirmed, then energy consumption is reduced, but device readiness and user convenience may be compromised
Solution Approach 1:
The system performs preliminary calculations of predicted arrival time based on current user position and moving speed before the reservation time. By determining whether the user is within the predetermined distance at the predetermined time before the reservation, the system can proactively prepare for device activation without waiting until the user is immediately at the door. This preliminary action ensures devices are activated at the right moment, maintaining readiness while avoiding premature activation that would waste energy.
Data Source
AI summary
A device control system provided herein includes: a reservation unit that receives inputs of location identification information, a use date/time, and user identification information and makes a reservation so that a user can use a location and a device disposed at the location at the use date/time; a determination unit that acquires user position information and location position information and determines whether or not a predetermined relationship is established between the position of the user and position of the location within a first time period before start of the use date/time; a control information generation unit that acquires device information including at least device identification information for identifying the device on a network and uses the acquired device information to generate control information for controlling operation of the device; and a device control unit that controls operation of the device using the control information when the predetermined relationship is established.