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Modbus protocol conversion device and multiple on-line centralized control system

A protocol conversion, centralized control system technology, applied in air conditioning systems, mechanical equipment, household heating, etc., can solve the problems of poor flexibility and high cost of online solutions, and achieve the effect of flexible use, cost control, and easy cost

Active Publication Date: 2020-04-17
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem of high cost and poor flexibility of the online scheme caused by the use of the existing Modbus protocol converter, and proposes a Modbus protocol conversion device, which can control the number of indoor units online by using a combination of multiple Modbus protocol converters, which can be used flexibly and effectively. Modbus protocol converter resources, avoid resource waste, and easy to control cost investment

Method used

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  • Modbus protocol conversion device and multiple on-line centralized control system
  • Modbus protocol conversion device and multiple on-line centralized control system
  • Modbus protocol conversion device and multiple on-line centralized control system

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Embodiment 1

[0023] In order to centrally monitor each indoor unit in the multi-connected system more flexibly, so that it can be applied to both small-scale projects and large-scale projects, this embodiment relates to a Modbus protocol conversion device, which is used for multiple On-line, multi-online includes at least one outdoor unit and at least one indoor unit communicatively connected with each outdoor unit, the Modbus protocol conversion device includes at least one Modbus protocol converter, and the Modbus protocol converter has a device address number and a device address number The corresponding online range, where the online range corresponds to the maximum number of indoor units to be connected to each Modbus protocol converter; the Modbus protocol converter communicates with each outdoor unit and each indoor unit through the communication line to obtain the indoor unit The total number and the address of each indoor unit; according to the device address number, online range, ...

Embodiment 2

[0054] This embodiment also relates to a multi-line centralized control system, which includes a multi-line, a host computer, and a Modbus protocol conversion device. The multi-line includes at least one outdoor unit and at least one indoor unit communicatively connected to each outdoor unit. machine is used to monitor each indoor unit; the Modbus protocol conversion device is the Modbus protocol conversion device as described in Embodiment 1, and its structure and the online scheme with the indoor unit can refer to the description in Embodiment 1, and will not repeat them here . Each of the Modbus protocol converters in the Modbus protocol conversion device in this embodiment is connected to the upper computer through communication, so that the upper computer can monitor the indoor unit through the Modbus protocol converter.

[0055] In order for the upper computer to monitor each indoor unit conveniently, the upper computer needs to first find the Modbus protocol converter r...

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Abstract

The invention discloses a Modbus protocol conversion device and a multiple on-line centralized control system. The Modbus protocol conversion device is used for being connected with one or more indoorunits and comprises one or more Modbus protocol converters, and each Modbus protocol converter is provided with a device address number and an on-line range corresponding to the device address number, wherein the on-line range corresponds to the maximum number of the indoor units to be connected to each Modbus protocol converter; according to the device address numbers, the on-line ranges, the total number of the indoor units and addresses of all the indoor units, each Modbus protocol converter is sequentially connected with the corresponding indoor unit till connection of all the indoor units is completed, wherein all the indoor units are sequenced according to the addresses. Through combination of the multiple Modbus protocol converters, the number of the indoor units is controlled, using is flexible, converter resources are effectively utilized, and cost input is easy to control.

Description

technical field [0001] The invention belongs to the technical field of centralized control of air-conditioning equipment, and in particular relates to a Modbus protocol conversion device and a multi-line centralized control system. Background technique [0002] The existing multi-connection unit includes an outdoor unit and a plurality of indoor units. When connecting, each indoor unit is correspondingly connected with the outdoor unit through a communication line. With the development of the intelligent level of air conditioners, users usually need to monitor and control the operating status of the air conditioner, especially the operating status of the indoor unit. [0003] The existing host computer uses the Modbus protocol converter to monitor multiple indoor units in the multi-connected unit. Traditionally, the number of indoor units monitored by the Modbus protocol converter is fixed. If the number of indoor units is increased, the Modbus protocol with a larger capacit...

Claims

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Application Information

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IPC IPC(8): F24F1/0003F24F11/58F24F11/32F24F11/64
CPCF24F1/0003F24F11/32F24F11/58F24F11/64
Inventor 宫华耀冯凯董美雪
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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