Single-tube infrared four-wire TTL serial port transceiving device and transceiving method in contaminated environment
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- WEIHAI PLOUMETER
- Publication Date
- 2020-06-26
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Abstract
Description
technical field
[0001] The invention relates to the technical field of infrared data communication, in particular to a single-tube infrared four-wire TTL serial port transceiver and a transceiver method in a polluted environment. Background technique
[0002] Intelligent water meters, heat meters and other fully electronic instruments with communication remote transmission function are generally divided into two parts: the base meter module and the communication module. Both have their own MCU and battery, and they work independently. The two are connected through the TTL serial port. Direct connection realizes data intercommunication. But this connection has the following problems:
[0003] 1. TTL serial communication cannot achieve electromagnetic isolation. A certain module will cause voltage fluctuations in the high-current working mode, which will affect the stability of the other module. For example, in the wireless data connection of the NB-IoT communication module,...