Method and device for transmitting data in parallel between intelligent terminals

Abstract

The invention discloses a method and a device for transmitting data in parallel between intelligent terminals. The method comprises the following steps: (1) a main control terminal 1 is connected with branch terminals 2 to n through independent communication wires to form a star-type network to realize independent and parallel data transmission between the main control terminal and all the branch terminals, wherein n is a natural number; (2) the main control terminal and all the branch terminals perform data transmission by a serial communication mode; (3) the parameters of communication interfaces of all the branch terminals are totally same, no internal address codes exist and can be randomly interchanged; the main control terminal identifies all the branch terminals according to the own port number. According to the method and the device which are provided by the invention, the shortcomings of high mounting and maintenance difficulty, high possibility of mis-report, low collection speed and the like in the prior art are overcome, and the aims of point-and-shoot type mounting and maintenance, mis-report elimination and high-speed collection are fulfilled.

Description

technical field [0001] The present invention relates to the field of electronics and electromechanical technology, in particular to a method and device for parallel data transmission between intelligent terminals. Background technique [0002] With the popularization and development of microcomputer technology, there are more and more micro-sized and highly intelligent terminal devices, such as various human-computer interaction terminals, various digital sensors, digital actuators, etc. It is particularly important, considering the distance between the terminals, in order to simplify the physical connection, the data exchange between the terminals adopts serial communication interface (such as RS232) or serial communication bus (such as RS422 / RS485), etc. Therefore, many microcomputer chips are embedded with 1 or 2 hardware serial communication modules to solve data exchange with other terminals. [0003] For a system with one main control intelligent terminal (referred to...

AI Technical Summary

Problems solved by technology

Many systems require special equipment to encode sub-terminals or remove other sub-terminals on the bus, and only connect one sub-terminal to encode it, so it is very troublesome to replace sub-terminals

[0005] ⑵ The number of each sub-terminal cannot be judged from the physical connection, but can only be judged by manual skills under the prompt of the main control terminal, which causes great difficulties for system maintenance

If there are N digital sensors (sub-terminals) with the same appearance installed in the system, the main control terminal detects that there is a problem with the No. 2 sensor and needs to be replaced, but the maintenance personnel need certain experience and skills to find the No. 2 sensor

[0006] (3) The main control terminal can only inquire and collect the data of each sub-terminal one by one through the sub-terminal number. For a system with multiple sub-terminals, the collection cycle is too long, which affects the response speed of the system, and it is difficult to adapt to the requirements of dynamic detection.

[0007] ⑷ Since all sub-terminals are hung on the same bus, the bus is vulnerable to lightning strikes, strong electricity, etc.

If the communication interface of a certain terminal is damaged, the bus is short-circuited, and all terminals cannot communicate. The main control terminal will falsely report that all sub-terminals have errors, which will cause misleading and troublesome maintenance and troubleshooting.

[0008] In the process of realizing the present invention, the inventor found that there are at least some defects in the prior art, such as difficult installation and maintenance, easy false alarm and slow collection rate.

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