‌Systematic Solutions for Preventing Remote Transmission Interruptions in Direct-Reading Remote-Transmission Water Meters

I. Communication Link Optimization‌

1. ‌Signal Enhancement Solutions‌

• For indoor metal meter box scenarios: Use 433MHz external antennas with shielded twisted-pair cables (e.g., RG174 coaxial cables), with signal attenuation ≤0.5dBm per meter extension‌1

• Outdoor complex environments: Deploy 5dBi gain fiberglass antennas, improving reading rates from 60% to 98% (field test data)‌1

2. ‌Network Strategy Upgrade‌

• Deploy solar-powered relay nodes every 500 meters, supporting dynamic path selection (based on signal strength/latency/packet loss scoring)‌1

• Replace single-hop transmission with Mesh networking, extending transmission distance to 800 meters in urban villages (field tests)‌1

‌II. Environmental Adaptability Enhancement‌

1. ‌IP68 Protection‌

• Pass GB4208-2008 standard tests: 24-hour immersion at 1.3m depth with no leakage, 8-hour dust chamber testing‌1

• Critical sealing points use O-rings (IP68 rated) for stable operation in manhole humid environments‌1

2. ‌EMI Mitigation‌

• Maintain ≥10cm distance from metal objects during installation (3x reduction in signal attenuation)‌1

• Use signal amplifiers with Automatic Gain Control (AGC) to prevent module damage from excessive signals‌1

‌III. Operation & Maintenance Strategies‌

1. ‌Battery & Power Management‌

• Supercapacitors (3V/1F) + pulse wake-up mechanism, with ≤50mA instantaneous communication power consumption‌1

• Optimize data transmission frequency to keep daily power consumption <0.1mAh‌1

2. ‌Preventive Maintenance‌

• Quarterly sensor cleaning to prevent contamination from affecting optical reading accuracy‌1

• Annual battery connection inspection with replacement cycles ≤8 years‌

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