Presence Sensor Device ID Mapping for Commissioning
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Solution Overview
Problem
The commissioning of electronic devices in building systems is complex and time-consuming, requiring numerous manual tasks to identify and map the position of each device, leading to increased costs and inefficiency.
Innovation Solution
A method involving presence sensors and ID-transmitters in electronic devices that detect a person's presence and wirelessly transmit a unique device ID, allowing for automatic mapping of device positions using a portable device, ensuring only one device transmits its ID at a time, thereby simplifying and accelerating the commissioning process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual methods are used to identify and map device positions, then device identification and positioning can be achieved, but the commissioning process becomes time-consuming and complex
Solution Approach 1:
The patent replaces manual mechanical identification processes with optical sensing systems. Presence sensors detect when a technician enters a device's presence volume, automatically triggering ID transmission and position mapping without manual device-by-device identification, thereby reducing commissioning time while maintaining positioning accuracy
Solution Approach 2:
Each electronic device autonomously transmits its own ID message when detected by a presence sensor, eliminating the need for manual identification. The device self-associates its ID with the technician's portable device position, enabling automatic position mapping without human intervention in the identification process
2Productivity
If multiple electronic devices transmit ID messages simultaneously, then commissioning speed may increase, but reliability decreases due to potential signal conflicts
Solution Approach 1:
The system uses periodic presence detection where devices transmit ID messages only when a technician is detected in their presence volume. This periodic, event-triggered transmission approach maintains commissioning speed by enabling parallel commissioning of multiple devices while ensuring reliability through sequential detection - only one device transmits at a time based on technician presence
Solution Approach 2:
The presence sensor acts as an intermediary that mediates between multiple electronic devices and the technician's portable device. It detects technician presence and selectively triggers ID transmission from the appropriate device, preventing simultaneous transmissions and ensuring reliable one-to-one association between device IDs and positions
3Reliability
If presence sensors operate continuously in active mode, then device presence detection reliability improves, but energy consumption increases
Solution Approach 1:
Presence sensors operate in a low-power state and are activated periodically or event-triggered when commissioning activities are detected. This periodic activation maintains detection reliability during commissioning while significantly reducing energy consumption compared to continuous operation
Solution Approach 2:
The presence sensor operates mode dynamically changes based on commissioning state. During active commissioning, sensors operate in high-reliability detection mode; during idle periods, they transition to low-power states. This dynamic operation adapts reliability and energy consumption to actual system needs
Data Source
AI summary
A method for determining a position of each of a plurality of electronic devices belonging to a common system of electronic devices is disclosed. The method comprising, for each of the plurality of electronic devices: detecting presence of a person in a predetermined presence volume associated with the electronic device; in response to detecting presence of a person in the predetermined presence volume, wirelessly transmitting, from the electronic device, an ID-message comprising a device-ID of the electronic device; at a portable electronic device, receiving the ID-message and extracting the device-ID of the electronic device; and mapping a current position of the portable electronic device as a position of the electronic device for which device-ID has been extracted.