Wireless sensor network node controller, core bottom plate and wireless network access method for sensor

Abstract

The invention discloses a wireless sensor network node controller, which comprises a core bottom plate and a plurality of interface conversion sub-modules. The core bottom plate comprises a plurality of universal communication interfaces, a plurality of universal asynchronous receiver / transmitter (UART) / serial peripheral interface (SPI) multiplexing selector switches and a protocol resolution processing module, wherein the protocol resolution processing module is used for processing data received by each universal communication interface of the core bottom plate or the data transmitted to each universal communication interface by the core bottom plate according to a UART protocol, an SPI protocol or an inter-integrated circuit (I2C) communication protocol; and each interface conversion sub-module comprises a sub-module universal communication interface adapted to the universal communication interface of the core bottom plate and a sensor interface, and is used for converting all types of data of the sensor interface into UART, SPI or I2C data respectively, and outputting the data to a corresponding pin of the sub-module universal communication interface. The invention also discloses the core bottom plate and a wireless network access method for a sensor. The compatibility of the wireless sensor network node controller can be enhanced, and the wireless sensor network node controller can be conveniently miniaturized.

Description

technical field [0001] The invention relates to information collection and wireless communication technology, in particular to a wireless sensor network node controller, a core base board and a sensor wireless network access method. Background technique [0002] With the development of wireless communication technology and integrated circuit technology, data collection in many fields (such as environmental monitoring, fire escape guidance, industrial equipment monitoring equipment) has gradually deviated from the original wired centralized monitoring mode and evolved into distributed wireless sensing Network node - gateway convergence node - host computer system. At present, the sensor network node controller in this system is a fixed combination sensor network node controller, that is, a wireless transceiver-node micro-processing system-signal conditioning circuit, and then connected to a 4-20mA sensor , this kind of sensor network node controller has only one sensor inter...

AI Technical Summary

Problems solved by technology

At present, the sensor network node controller in this system is a fixed combination sensor network node controller, that is, a wireless transceiver-node micro-processing system-signal conditioning circuit, and then connected to a 4-20mA sensor , this kind of sensor network node controller has only one sensor interface, which has a high degree of integration, but it is not suitable for sensors with multiple interfaces and multiple data formats to enter the network; the other is a sensor network node controller with strong compatibility This kind of sensor network node controller has a variety of external sensor interfaces, such as UART (Universal Asynchronous Receiver / Transmitter, Universal Asynchronous Receiver Transmitter), SPI (serial peripheral interface, serial peripheral interface), I2C (Inter- Integrated Circuit, I2C bus), RS485, RS232, RS422, CAN (Controller Area Network, controller area network), USB (Universal Serial BUS, Universal Serial Bus), TCP / IP (Transmission Control Protocol / Internet Protocol, medium transmission Control Protocol / Internet Interconnection Protocol) or GPS (Global Positioning System, Global Positioning System) and other interfaces, but this kind of sensor network node controller is not conducive to miniaturization and portability due to too many external sensor interfaces

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