Description
LoRa Wireless Meter Reader Wireless Lora Module for Water Meter Gas Meter Wireless Data Acquisition LoRa Sx1278 STM8L
Product Description
The wireless communication part of the main board of the watch is based on Semtech's Sx1278LoRa spread-spectrum modulation technology. It has ultra-high receiving sensitivity and strong anti-interference ability. At the same transmit power, it has a longer communication distance than other wireless solutions and shows lower power consumption. In open environment, the average communication distance is 3km.
The main board of the meter adopts STM8L single-chip microcomputer, which is enough to support the complex wireless meter reading business, and also has low power consumption. It has built-in data acquisition and wireless transceiver procedures. The user does not need secondary development, and only needs to complete the meter according to the communication protocol. Wireless data collection.
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Parameter
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Wireless solution: Semtech Sx1278;
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Modulation technology: LoRa spread spectrum;
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Carrier frequency: 433 / 490MHz open frequency band, frequency points can be set;
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Transmit power: ≤100mW (20dBm), 7 levels adjustable;
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Receiving sensitivity: -148dBm;
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Main working voltage: 4v-6v (suitable for 4 dry batteries);
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Working voltage: 2.1-3.6V (suitable for disposable lithium battery);
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Current power consumption: transmit ≤120mA, receive ≤18mA, sleep ≤4.9uA, standby average ≤20uA;
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Sleep time: can be set: 25, 45, 65, 8S, 105;
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Breathing time: can be set: 2ms, 4ms, 8ms, 16ms, 32ms, 64ms;
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Table-side address: 4 bytes (00000000 ~ FFFFFFFF);
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Working environment: -40 ~ + 80 ℃; 10% ~ 90% relative humidity, non-condensing;
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Feature
1.Efficient forward error correction coding technology, strong anti-interference ability and low bit error rate; 2, CAD detects LoRa signal to prevent false wake-up; √ Meter-side module wakes up intermittently, standby power consumption is extremely low; 3. Built-in watchdog ensures long-term reliable and stable operation; 4, with wireless data encryption function; 5, support short-range wireless update module program and set module parameters; 6, can directly set the carrier frequency to effectively avoid interference sources; 7, transmit power can be set to prevent too much power from wasting power; 8, 4-byte table-side address can be arbitrarily set, large capacity; 9, can set the network ID, multiple meters in the vicinity of simultaneous meter reading without conflict; can be set up photoelectric collection, single / double reed pipe collection and other methods; 10. The collection accuracy can be set in the reed tube collection mode, accurate to 0.001 cubic meters; 11, sleep time and breathing time can be set to adapt to different data collection cycles and power consumption; 12, can detect the valve status, can set the valve opening time and valve closing time to adapt to different meters; 13, Supports air wireless forced valve opening and closing, and has valve control status detection function; supports automatic detection of status in the table for valve opening and closing; 14, Support for various meter reading commands such as monthly usage collection and total usage collection 15, Support power collection and low battery alarm; 16, The bottom of the table can be set to facilitate the synchronous counting of mechanical and electronic acquisition modules; 17, support for total pulse data acquisition and LCD screen display; 18. Support reading of SQL database records and version numbers;
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