General & Business

Noise pollution is a long-term problem for urban residents. Recent studies have estimated that nine out of ten people in large cities are exposed to an environment where noise levels exceed international standards. The negative effects of noise on health include sleep disturbances, hearing loss, cognitive impairment, and high blood pressure. Recently, Jinan City has set up a low-cost acoustic sensor network to continuously monitor noise in urban environments. They use LoRa technology, which uses a massive LoRa module and a small number of gateways and repeaters to build a system to implement optical inspection at a very low cost.
K2 Network Setting Commands
Reasons of gibberish are as below: 1.The setting of baud rate, data bits, check bit are not matched between serial device any our converter. 2. Hardware Serial TTL RS232 RS485, they are different level types, cannot be connected directly. Need to be converted via 232 or 485 chip. It is wrong to link TTL to PC
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