Communication Device Dynamic Transmission Mode Switching
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Solution Overview
Problem
In power management systems, communication congestion occurs when the number of power loads increases, leading to errors in transmitting power consumption data, potentially causing power consumption to exceed contracted levels due to unreliable data transmission.
Innovation Solution
A communication device that switches transmission modes based on acquired electrical quantity data, increasing frequency and power when necessary for reliable transmission, and adjusting to lower frequencies and powers after congestion is alleviated, using modes like broadcast, multicast, or unicast to ensure data reaches the master unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the data communication frequency is increased to stochastically secure reliable data transmission when communication quality declines, then transmission reliability is improved, but communication load of the overall HEMS increases and congestion occurs at higher frequency
Solution Approach 1:
The patent dynamically changes communication parameters (transmission power, packet interval) based on detected communication quality. When communication quality is good, normal transmission parameters are used. When quality deteriorates, the system increases transmission power and adjusts packet intervals to maintain reliability without causing excessive congestion, thus adaptively resolving the contradiction between reliability and communication load.
Solution Approach 2:
The patent changes physical parameters of communication (transmission power, packet transmission interval) based on communication quality conditions. By adjusting these parameters dynamically, the system achieves reliable transmission when needed while avoiding constant high-load transmission, thus resolving the contradiction between transmission reliability and overall communication load.
2Reliability
If a transmission mode with high error resistance (such as BPSK) is used, then error resistance is improved, but transmission efficiency decreases
Solution Approach 1:
The patent changes transmission parameters (power, interval) based on communication quality rather than using fixed high-error-resistance modes. This allows the system to achieve sufficient reliability through parameter adjustment while maintaining better transmission efficiency compared to always using robust but inefficient modes like BPSK.
3Adaptability or versatility
If the number of power loads to be controlled increases, then system functionality is improved, but communication congestion occurs and power consumption data may not reach the master unit
Solution Approach 1:
The patent implements dynamic adjustment of communication parameters based on detected quality. As more power loads are added to the system, the communication quality deteriorates, triggering automatic parameter adjustments (increased power, modified intervals) that maintain data transmission reliability despite the increased number of devices, thus resolving the contradiction between system scalability and transmission reliability.
Data Source
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AI summary
Provided is a communication device including an acquisition unit configured to acquire the electrical quantity of a power load, a communication unit configured to wirelessly transmit a packet including the electrical quantity acquired to a master unit that wirelessly transmits a control signal that controls the electrical quantity of a plurality of loads, and a controller configured to switch operation of the communication unit to a second mode in which the packet is wirelessly transmitted without specifying a destination when the electrical quantity equal to or greater than a first reference value is acquired during operation of the communication unit in a first mode in which the packet is wirelessly transmitted to the base station by specifying a destination.