Wireless Meter Nodes with Opt-Out RF Emission Control
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Solution Overview
Problem
There is a concern among utility consumers and public utility commissions about the potential health effects of prolonged exposure to low-level radio frequency (RF) emissions from wireless communication in electricity meters, leading to a desire for reduced RF communications near homes.
Innovation Solution
The implementation of wireless network communication nodes with opt-out capabilities that can operate in a limited communication mode, reducing RF emissions by restricting their role as repeaters, transmitting data less frequently, and configuring transceivers to be powered off or remain on for specific functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nodes operate in full-scale communication mode with frequent transmissions and repeater functions, then data collection reliability is improved, but RF emission exposure increases
Solution Approach 1:
The system dynamically adjusts communication mode for each node based on customer preferences. Nodes can switch between full-scale mode (frequent transmissions, repeater enabled) and limited mode (reduced transmissions, repeater disabled), allowing the network to adapt communication characteristics to minimize RF exposure while maintaining operational reliability through selective mode assignment.
Solution Approach 2:
Different communication characteristics are applied to different nodes based on local customer requirements. Each node can be independently configured with its own communication mode (full-scale or limited), allowing customers to opt-out of frequent RF transmissions in their specific locations while other nodes continue normal operations, thus addressing local concerns without compromising overall system reliability.
2Object-affected harmful factors
If nodes are restricted from serving as repeaters and transmit less frequently, then RF emissions are reduced, but communication path reliability may deteriorate
Solution Approach 1:
The system introduces a mode indicator as an intermediary element that signals a node's communication characteristics to other network participants. When a node operates in limited mode without repeater function, the mode indicator informs neighboring nodes and the central node about this restriction, allowing the network to route communications through alternative paths or adjust expectations for data collection timing, thereby maintaining reliability despite reduced RF activity.
Solution Approach 2:
The system implements feedback mechanisms where nodes report their operational mode and data collection status to the central node. This feedback allows the network to monitor and adjust to the reduced communication activity from limited-mode nodes, ensuring that data collection reliability is maintained through compensatory measures such as increased polling frequency by the central node or alternative routing decisions.
3Loss of energy
If transceivers are powered off during non-transmission periods, then energy consumption and RF emissions are minimized, but communication responsiveness decreases
Solution Approach 1:
Transceivers in limited-mode nodes operate periodically rather than continuously. The transceiver is powered on at scheduled intervals to transmit data and then powered off during non-transmission periods. This periodic operation significantly reduces energy consumption and RF emissions while maintaining acceptable communication responsiveness for meter data collection, which does not require real-time interaction.
Solution Approach 2:
The system uses preliminary scheduling where the central node plans data collection timing in advance for limited-mode nodes. By knowing when limited-mode nodes will have their transceivers powered on, the central node can schedule data collection requests to coincide with these windows, ensuring communication responsiveness is maintained without requiring the transceiver to remain continuously powered on.
Data Source
AI summary
Techniques are disclosed herein for providing wireless network communication nodes with opt-out capabilities. Such capabilities may, for example, allow particular customers to opt out of a typical full-scale communication mode such that their associated equipment operates at least temporarily in a limited communication mode. The limited communication mode may limit customer exposure to emissions resulting from RF communications near their homes or other areas, which may be attractive to customers such as those with health or other emission-related concerns.