Micro-Power Wireless Access for IoT Power Grid Sensors
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Solution Overview
Problem
Existing IoT sensing devices for power transmission and transformation face issues of non-interoperability due to private protocols, spectrum resource chaos, and inadequate power consumption and transmission distance in complex environments, limiting their service life and maintenance requirements.
Innovation Solution
A micro-power wireless access method and apparatus with a time synchronization process, traffic channel access, control channel configuration information access, and control channel burst information access, utilizing LORA, BLE, and ZigBee communication protocols, and supporting asynchronous communication and retransmission mechanisms to optimize power consumption and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If general wireless sensor network technology (BLE, LORA, ZigBee) is used, then wireless transmission capability is achieved, but power consumption is too high and transmission distance is insufficient in complex power transmission and transformation environments
Solution Approach 1:
The patent implements periodic wake-up and sleep cycles for the sensing terminal. The terminal wakes up at predetermined intervals to transmit data packets and then enters sleep mode, significantly reducing average power consumption while maintaining reliable communication over extended periods (6+ years)
Solution Approach 2:
The patent dynamically adjusts transmission parameters including power level, packet size, and transmission interval based on battery status, signal quality, and data priority. This adaptive parameter adjustment optimizes the balance between power consumption and transmission reliability
2Reliability
If private protocols are used for wireless communication, then device functionality is achieved, but interoperability between different devices is lost
Solution Approach 1:
The patent adopts a standardized communication protocol that enables different sensing terminals and aggregation nodes from various manufacturers to interoperate seamlessly. The protocol supports multiple data types, transmission modes, and device configurations within a single unified framework, achieving universal compatibility
3Ease of manufacture
If wireless spectrum resources are chaotically applied, then device deployment is simplified, but mutual interference increases
Solution Approach 1:
The patent implements preliminary spectrum allocation and channel assignment during network initialization. Aggregation nodes pre-negotiate and assign specific frequency channels and time slots to sensing terminals, preventing interference before it occurs while maintaining simple device deployment
Solution Approach 2:
The patent incorporates feedback mechanisms where aggregation nodes monitor spectrum usage and interference levels, then dynamically adjust channel assignments and transmission parameters to optimize spectrum utilization and minimize mutual interference
Data Source
AI summary
A micro-power wireless access method and apparatus for the Internet of things for power transmission and transformation equipment involves a time synchronization process, a traffic channel access process, a control channel configuration information access process, and a control channel burst information access process. In the time synchronization process, an aggregation node determines a delay parameter and other parameters based on a timeslot in which traffic information randomly transmitted by a sensing terminal is located, and the sensing terminal adjusts transmission time of a corresponding frame based on the parameters. The traffic channel access process adopts a mode in which one-way reporting is mainly used, to minimize working time of a sensor. The present disclosure realizes limited two-way communication on a control channel, supports configuration of a sensor cycle, a threshold, and other parameters, and supports a retransmission mechanism on the control channel for important alarm information.