Smart meter device as field bus intelligent slave station

Abstract

The invention belongs to the field of intelligent meter display monitoring and control, and discloses a smart meter device as a field bus intelligent slave station. An acquisition module and a slave station module are connected to each other and communicate with each other through a SPI. The acquisition module acquires an analog quantity to be displayed and transmits it to the slave station moduleas required. The slave station module and a display module are connected with each other and achieve information interaction through an RS232 protocol. The slave station module performs data processing on the analog quantity from the acquisition module, obtains a data frame format recognizable by the display module, and transmits the data frame format to the display module. The display module accepts and displays the data frame. Further, the display module is provided with a human-machine interaction window. After receiving an external instruction, the display module transmits the external instruction to the slave station module, and the slave station module performs data processing on the instruction in order to convert the instruction into an instruction data frame. The display module executes the instruction according to the instruction data frame. The smart meter device has high data processing precision, high reliability, good real-time display and low cost.

Description

technical field [0001] The invention belongs to the field of intelligent instrument display monitoring control, and more specifically relates to an intelligent instrument device as a field bus intelligent slave station. Background technique [0002] A smart instrument refers to an instrument with a single-chip microcomputer or an embedded system as the core. The difference from the traditional instrument is that the function is no longer realized by the functional unit of the circuit, but a large number of data processing and control tasks are completed by software. With the development of computer technology and embedded technology, smart meters have replaced traditional meters and are applied. Smart meters are increasingly needed in industrial sites with harsh environments and places with high functional requirements. [0003] In the industry, real-time industrial Ethernet has begun to be applied. Real-time industrial Ethernet such as Powerlink, NCUC, and EtherCAT all have...

AI Technical Summary

Problems solved by technology

[0005] For the above defects or improvement needs of the prior art, the invention provides a smart meter device as a fieldbus smart slave station, by using the slave station module, its purpose is to transfer the data that is carried out in the master station module in the prior art The processing is transferred to the slave station module, which reduces the requirement for the acquisition module to have data processing capabilities, and reduces the process of data transmission to the master station module, thereby solving the technical problems of high equipment cost and low accuracy

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