Serial communication device and system

Abstract

The invention discloses a serial communication device and system for multipoint communication. The serial communication device comprises a receiving circuit, a transmitting circuit and a controller. When the receiving circuit receives a first serial data frame, the processing steps of the controller comprise: reading a first data bit sequence from a data sequence contained in the first serial dataframe, and then recording a part of the first data bit sequence as a second data bit sequence; and selecting one sending circuit to send a second serial data frame, wherein the forefront part of thedata bit sequence contained in the second serial data frame contains the second data bit sequence. The plurality of serial communication devices are connected through the receiving circuit and the transmitting circuit to form a serial communication system. According to the serial communication system, a serial bus and a master-slave structure are avoided, the requirement for the processing capacity of nodes participating in communication is lowered, the assembling and maintaining process of the system is simplified, the power consumption of the system is reduced, and meanwhile the feasibilityof peer-to-peer communication between a large number of nodes is achieved.

Description

technical field [0001] The present application relates to a serial communication device and system, in particular to a serial communication device and system for communication between multiple points. Background technique [0002] The serial communication scheme between multiple points generally adopts a serial bus and a master-slave structure, that is, a master device connects multiple slave devices through a serial bus and communicates with it. In order to avoid communication conflicts on the serial bus, no matter the master device or the slave device, it is necessary to follow the bus protocol and assign an address to each slave device; any communication that occurs on the serial bus requires all slave devices to be listening State, to judge whether this communication is related to itself, and decide whether to participate; and the communication can only occur between the master device and the slave device. [0003] In some emerging technology fields such as the Internet...

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Problems solved by technology

[0004] 1. Controllers, sensors, and actuators must have sufficient processing power to cope with the bus protocol, which is too demanding and even far exceeds the processing power required to complete their own functions;

[0005] 2. Each node participating in the communication needs to be assigned an address. Even if the functions are the same, there will be differences in the addresses and cannot be replaced with each other. When there are many nodes, the system assembly and maintenance become extremely complicated;

[0006] 3. Devices that have nothing to do with the communication that occurs on the serial bus must also be in the monitoring state at any time, which wastes system power consumption;

[0007] 4. The limitations of the master-slave structure limit the feasibility of peer-to-peer communication between a large number of nodes

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