CN110099124B - Universal building automation assembly type network communication system and method - Google Patents
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Abstract
A universal building automation assembly type network communication system and a method belong to the technical field of intelligent control of the Internet of things. The technical scheme is as follows: the method comprises the following steps: the system comprises a DT0 protocol module, a DT1 protocol module, a DT2 protocol module and a logic event processor module, wherein the DT0 protocol module is used for realizing the abstraction of the physical layer of the IO port equipment in the control system in the programming angle; the DT1 protocol module is used for realizing the interface unification of the communication technology among all nodes in the control system; the DT2 protocol module is used for realizing the interaction of information among all nodes in the control system; and the logic event processor module is used for processing and controlling the state of the IO port in the control system. The universal building automation assembly type network communication system and the universal building automation assembly type network communication method have the advantages that the system and the method are high in cost performance, low in power consumption, capable of being highly customized and capable of conducting modular control, and the problems that efficient customization is impossible and modular assembly is impossible are solved at low cost.
Description
Technical Field
The invention belongs to the technical field of intelligent control of the Internet of things, and particularly relates to a universal building automation assembly type network communication system and method.
Background
With the development of wireless internet of things technology and the development of PLC technology, people have greater and greater requirements on intelligent equipment. Various technologies of intelligent devices are also numerous, and for example, chinese patent publication No. 201410557640.2 discloses an intelligent control method, an intelligent controller and an intelligent control system, which can implement a wireless control method with low power consumption.
The existing communication protocol technologies are numerous, but a unified standard is not provided, so that the compatibility of the existing communication protocol technologies is poor, and the existing communication protocol technologies are normalized and generalized by the standard; although the communication technologies represented by can bus, 485 and zigbee are low in cost, the communication technologies cannot be compatible, have poor programmability and have single functions of network equipment; the technologies represented by PLC have no problem of poor programmability, but have disadvantages of high cost, high power consumption, low integration level and difficult wiring, which also causes the cost of mass-production PLC at present to be very high.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a universal building automation assembly type network communication system and a universal building automation assembly type network communication method, which are high in cost performance, low in power consumption, highly customizable and capable of performing modular control.
The technical scheme is as follows:
a universal building automation assembly network communication system, comprising: the system comprises a DT0 protocol module, a DT1 protocol module, a DT2 protocol module and a logic event processor module, wherein the DT0 protocol module is used for realizing the abstraction of the physical layer of the IO port equipment in the control system in the programming angle; the DT1 protocol module is used for realizing the interface unification of the communication technology among all nodes in the control system; the DT2 protocol module is used for realizing the interaction of information among all nodes in the control system; and the logic event processor module is used for processing and controlling the state of the IO port in the control system.
Further, the logic event handler module comprises an event handling module and a logic control mapping module, wherein the event handling module runs on a host device of the control system and is used for handling and controlling the state of an IO port in the control system; and the logic control mapping module is used for contacting each IO port in the control system.
The invention also comprises a general building automation assembly type network communication method, which uses the network communication system to execute the following steps:
s1, automatically networking the host and any slave power-on equipment, and connecting any slave to a PC (personal computer) by using a usb cable;
s2, opening the PC upper computer, selecting the corresponding serial port number and opening the serial port;
s3, the slave machine and the host machine obtain the equipment ID in the network, the IO port ID of each equipment and the logic control mapping module data in the host machine through the communication of the DT2 protocol module;
s4, selecting DI0 under the slave 1 through an editing interface of the logic control mapping module;
s5, converting the items under the editing interface of the logic control mapping module into logic control mapping data and downloading the data to the host computer through the slave computer;
s6, disconnecting the slave and the PC, setting DI0 of the slave 1 as 1, and sending an IO change event to the host through a DT2 protocol module after an IO check program of the slave 1 monitors the IO state change;
s7, the host receives the event and processes the event through the logic event processor module, and issues a command that the output of the slave 2DO0 is high;
s8, outputting DO0 as high according to the command after the slave 2 receives the command;
s9, when the user cancels the high level of the slave 1DI0, the slave 1 sends an IO state change event to the host;
and S10, the master receives the event and processes the event through the logic event processor module, and issues a command that the output of the slave 2DO0 is low.
Further, the protocol transmission flow of the DT0 protocol module, the DT1 protocol module and the DT2 protocol module includes the following steps: comparing input data according to a protocol format in a bit-by-bit manner during data preprocessing, and recording data when the data formats are in accordance; entering a data analysis stage when the receiving is finished, and processing the received data according to a protocol format; if the protocol specifies that data needs to be returned, entering a protocol data sending stage, filling the sent data according to a protocol format and calculating a CRC check code of the sent data.
Further, the logic control mapping module transmission process includes the following steps: processing the input event according to the data of the logic control mapping module; after receiving the event information, calling an event processing module, checking whether a linked list of a logic control mapping module is empty, if not, performing traversal operation on the linked list of the logic control mapping module, simultaneously comparing id and port number of the event device, and whether the id and port number are consistent with a source device number port number in an entry of the logic control mapping module, if so, comparing an event value and a source value according to a logic word in the entry of the logic control mapping module, and writing corresponding output into an output linked list; after the logic control mapping module completes traversal, if the output linked list is not empty, the device traverses and sends the output linked list to the corresponding address.
The invention has the beneficial effects that:
the system and the method have high cost performance, low power consumption, high customization, modular control and establishment of a special DT series protocol, and the DT0 subprotocol is a protocol for transmitting data between a main control chip and an extension module, so that the controllable external equipment of the system is greatly increased, and the aim of improving the expansibility is fulfilled; the DT1 subprotocol is a transmission protocol for transmitting data information and commands of the main control chip to the transmitting end, and is a communication protocol between the core control board and the zigbee module, so that real-time communication between the core control board and the zigbee module is realized; the DT2 subprotocol is a master-slave communication protocol based on the zigbee protocol, and an extension method of other communication technologies is reserved; the problems that the customization cannot be efficiently carried out and the modular assembly cannot be carried out are solved at lower cost; the functions of the PLC technology are achieved with low cost, but only the power consumption of the wireless communication technology is consumed; the defect that various communication technologies have no reference is overcome, and a quick installation mode is provided for the modular assembly facility.
Drawings
FIG. 1 is a block diagram of a system of a complete set of equipment according to an experimental example of the present invention;
FIG. 2 is a general flow chart of user operation of the present invention;
FIG. 3 is a flow chart of an automatic networking of devices;
FIG. 4 is a schematic diagram of a serial port initialization process;
FIG. 5 is a schematic diagram illustrating a process of a host acquiring device IO port and LCM data streams;
FIG. 6 is a flow chart of the process of LCM data conversion and download;
FIG. 7 is a flow chart of master-slave data transfer;
FIG. 8 is a diagram illustrating a DT protocol parsing process;
FIG. 9 is a detailed flow diagram of DT protocol transmission;
FIG. 10 is a schematic diagram of an LCM protocol analysis;
fig. 11 is a detailed flowchart of LCM protocol transmission.
Detailed Description
The general building automation fabricated network communication system and method will be further described with reference to fig. 1-11.
In the following, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the present invention is not limited to the following cases, and the cases are provided for illustrative purposes only. The present invention is not intended to exclude the reverse invention in which other elements are added, modified, deleted, etc.
Scheme overview:
through the system block diagram of fig. 1, the control system adopts the idea of modular construction, the communication mode is modularized to realize the diversity of the communication mode of the control system, and a complex real-time control model (for example, a PID is abstracted into analog input and output) is abstracted to be added into the control system. The control of each IO port in the system is realized by adopting the control idea of PLC and a host, and the main control chip adopts STM32F 4.
The control system is characterized in that a master multi-slave mode is matched with an upper computer in the general aspect, and a host is used for realizing all control functions of the control system and a human-computer interaction interface of the system. A plurality of slaves may be present in the control system, which serve to abstract the physical layer and communicate with the master via a communication network. And the upper computer develops the programming for realizing the logical control mapping of the host by adopting C #.
The control system is a star network in communication, and the network can realize two communication modes of unicast and broadcast.
The control system mainly realizes that 3 DT protocols are divided into a DT0 protocol, a DT1 protocol, a DT2 protocol and a logic event processor in terms of software. The DT0 protocol is used for implementation, and abstracts physical layers such as IO ports and the like in a control system from a programming angle. The DT1 protocol is used to implement a uniform interface to the communication technology between the individual nodes in the control system. The DT2 protocol is used for realizing and controlling information interaction among various nodes in the system. A logical event handler, which is an event handling mechanism and a logical control map (logical control Mapping) hereinafter abbreviated LCM. The event processing mechanism is a core of the system work, runs on the host equipment of the control system and is used for processing and controlling the state of the IO port in the control system. The LCM is used for linking the IO ports in the control system, and the event processor controls the IO ports according to the LCM.
The details are shown in figure 1.
The program flow comprises the following steps:
the system is outlined from the user's point of view. Taking DI0 of slave 1 to control DO0 of slave 2 as an example, when DI0 of slave 1 is 1, DO0 of slave 2 is 1 (hereinafter, the slave is abbreviated as Dec).
1. The master and any slave powered devices will be automatically networked (wired devices need to connect communication cables in advance) and any slave connected to the PC using usb cable. Fig. 3 is a flow chart of automatic networking of devices, which shows a specific networking process.
2. And opening the PC upper computer, selecting the corresponding serial port number and opening the serial port.
3. And clicking an upload key, and the slave machine and the host machine acquire the IO port ID of each device of the device ID in the network and the LCM data in the host machine through DT2 protocol communication.
4. DI0 under Dec1 was selected via LCM editing interface.
5. And when the user clicks an uploading button, the program converts the items in the LCM editing interface into LCM data and downloads the LCM data to the host computer through the slave computer.
6. Programming of the LCM has been completed so far, disconnecting the slave from the PC. The user sets DI0 of Dec1 to 1. And after monitoring the IO state change, the IO checking program of the slave 1 sends an IO change event to the host through the DT2 protocol.
7. The host receives the event and processes the event through the logic event processor, and issues a command with the output of Dec 2DO0 as high.
8. Slave 2, upon receiving the command, outputs DO0 high as instructed.
9. When the user cancels the high level of dec1_ DI0, slave 1 sends an IO Change State event to the master
10. The host receives the event and processes the event through the logic event processor, and issues a command that the output of the Dec 2DO0 is low.
The control system has the main technical characteristics that:
DT protocol and parser therefor
The DT protocols can be classified into three types, namely DT0, DT1 and DT2, and the three types of protocols have no great difference in data structure, so that a parser can be adopted for data parsing.
Fig. 8 is a schematic diagram of the DT protocol parsing process, and the whole diagram is a 16-system number.
As shown in fig. 8, bits [0,1] in the protocol are turned off according to the DT protocol for the frame header, bit 2 is a function word for protocol function differentiation, and bit 3 is a data length bit for indicating the data length. The bit [4,3+ LEN ] bits are data bits. Bit LEN +3 is a CRC check bit.
As shown in fig. 9, the parser comprises three parts of receiving preprocessing of data, data parsing and sending of protocol data.
And comparing the input data bit by bit according to a protocol format during preprocessing the data, and recording the data when the data formats are in accordance. And entering a data analysis stage when the receiving is finished, and processing the received data according to the protocol format. If the protocol specifies that data needs to be returned, entering a protocol data sending stage, filling the sent data according to a protocol format and calculating a CRC check code of the sent data.
LCM protocol and logic event handler therefor
FIG. 10 is a schematic diagram of an LCM protocol analysis, and the whole diagram is a 16-ary number.
As shown in fig. 10, the LCM protocol data is of fixed length. Bits [0,1] in the protocol are frame header, which represents a LCM data start, and LCM is frame header and end symbol, bits [2,16] are data bits, and bits 17 are CRC check bits.
The LCM protocol is used to represent logical relationships between ports.
As shown in fig. 11, the logic event handler processes the input event (port state change) according to the LCM data. The logic event handler is based on the linked list, and the program calls the event handler after receiving the event information. The method comprises the steps of checking whether an LCM linked list is empty or not, if not, performing traversal operation on the LCM linked list, simultaneously comparing whether an id and a port number of an event device are consistent with a source device number port number in an LCM entry or not, if so, comparing an event value and a source value according to a logic word in the LCM entry, and writing corresponding output into an output linked list. And after the LCM traversal is completed, if the output linked list is not empty. The device will traverse and send the output linked list to the corresponding address.
The DT protocol core code is as follows:
the LCM protocol core code is as follows:
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (4)
1. A general type building automation assembly type network communication system is characterized by comprising: the system comprises a DT0 protocol module, a DT1 protocol module, a DT2 protocol module and a logic event processor module, wherein the DT0 protocol module is used for realizing the abstraction of the physical layer of the IO port equipment in the control system in the programming angle; the DT1 protocol module is used for realizing the interface unification of the communication technology among all nodes in the control system; the DT2 protocol module is used for realizing the interaction of information among all nodes in the control system; the logic event processor module is used for processing and controlling the state of an IO port in the control system;
the following steps are carried out:
s1, automatically networking the host and any slave power-on equipment, and connecting any slave to a PC (personal computer) by using a usb cable;
s2, opening the PC upper computer, selecting the corresponding serial port number and opening the serial port;
s3, any slave computer and the host computer obtain the equipment ID in the network, the IO port ID of each equipment and the logic control mapping module data in the host computer through the communication of the DT2 protocol module;
s4, selecting DI0 under the slave 1 through an editing interface of the logic control mapping module;
s5, converting the items under the editing interface of the logic control mapping module into logic control mapping data and downloading the data to the host computer through any slave computer;
s6, disconnecting the slave and the PC, setting DI0 of the slave 1 as 1, and sending an IO change event to the host through a DT2 protocol module after an IO check program of the slave 1 monitors the IO state change;
s7, the host receives the event and processes the event through the logic event processor module, and issues a command that the output of the slave 2DO0 is high;
s8, outputting DO0 as high according to the command after the slave 2 receives the command;
s9, when the user cancels the high level of the slave 1DI0, the slave 1 sends an IO state change event to the host;
and S10, the master receives the event and processes the event through the logic event processor module, and issues a command that the output of the slave 2DO0 is low.
2. The universal building automation assembled network communication system as claimed in claim 1 wherein the logic event handler module includes an event handling module and a logic control mapping module, the event handling module is run on a host device of the control system for handling and controlling the status of the IO port in the control system; and the logic control mapping module is used for contacting each IO port in the control system.
3. The universal building automation assembled network communication system as claimed in any one of claims 1-2, wherein the protocol transmission flow of the DT0 protocol module, the DT1 protocol module and the DT2 protocol module includes the following steps: comparing input data according to a protocol format in a bit-by-bit manner during data preprocessing, and recording data when the data formats are in accordance; entering a data analysis stage when the receiving is finished, and processing the received data according to a protocol format; if the protocol specifies that data needs to be returned, entering a protocol data sending stage, filling the sent data according to a protocol format and calculating a CRC check code of the sent data.
4. The universal building automation assembly network communication system as claimed in claim 1 or 2, wherein the logic control mapping module transmission flow comprises the steps of: processing the input event according to the data of the logic control mapping module; after receiving the event information, calling an event processing module, checking whether a linked list of a logic control mapping module is empty, if not, performing traversal operation on the linked list of the logic control mapping module, simultaneously comparing id and port number of the event device, and whether the id and port number are consistent with a source device number port number in an entry of the logic control mapping module, if so, comparing an event value and a source value according to a logic word in the entry of the logic control mapping module, and writing corresponding output into an output linked list; after the logic control mapping module completes traversal, if the output linked list is not empty, the device traverses and sends the output linked list to the corresponding address.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710883A (en) * | 2009-12-03 | 2010-05-19 | 上海建坤信息技术有限责任公司 | Multi-protocol data acquisition gateway for intelligent building and data acquisition method thereof |
| CN201589978U (en) * | 2010-01-29 | 2010-09-22 | 许勇 | Computer room centralized monitoring equipment based on BAC net field bus |
| CN102571795A (en) * | 2012-01-12 | 2012-07-11 | 浙江大学 | Building automatic control system based on building automatic control network (BACnet) and European installation bus (EIB) protocol |
| CN103365286A (en) * | 2013-07-30 | 2013-10-23 | 国家电网公司 | Integrated communication control system for intelligent building |
| CN104375484A (en) * | 2014-11-13 | 2015-02-25 | 深圳市汇川控制技术有限公司 | Distributed control system based on CAN open protocol |
| CN104793507A (en) * | 2015-04-15 | 2015-07-22 | 安徽中程智能科技有限公司 | Building intelligent auto-control system DDC (direct digital control) and auto-control method |
| CN106059833A (en) * | 2016-07-28 | 2016-10-26 | 武汉虹信技术服务有限责任公司 | Multi-protocol adaptation method and system applied to intelligent building platform |
| CN206523765U (en) * | 2017-03-08 | 2017-09-26 | 信阳师范学院 | LAN automatic control system based on PIC single chip microcomputer |
| CN107295108A (en) * | 2017-08-14 | 2017-10-24 | 安徽简道科技有限公司 | The network communication method of automatic building control system |
| CN108268019A (en) * | 2018-02-11 | 2018-07-10 | 合肥图久智能科技有限公司 | Building automatic control system based on P-BUS buses |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136000B (en) * | 2006-09-01 | 2011-01-05 | 飞思卡尔半导体公司 | Application processor circuit for realizing SD host slave equipment and electronic equipments thererof |
| KR101995862B1 (en) * | 2013-06-13 | 2019-10-01 | 삼성전자주식회사 | Communication apparatus and method for controlling the same |
-
2019
- 2019-05-08 CN CN201910381223.XA patent/CN110099124B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710883A (en) * | 2009-12-03 | 2010-05-19 | 上海建坤信息技术有限责任公司 | Multi-protocol data acquisition gateway for intelligent building and data acquisition method thereof |
| CN201589978U (en) * | 2010-01-29 | 2010-09-22 | 许勇 | Computer room centralized monitoring equipment based on BAC net field bus |
| CN102571795A (en) * | 2012-01-12 | 2012-07-11 | 浙江大学 | Building automatic control system based on building automatic control network (BACnet) and European installation bus (EIB) protocol |
| CN103365286A (en) * | 2013-07-30 | 2013-10-23 | 国家电网公司 | Integrated communication control system for intelligent building |
| CN104375484A (en) * | 2014-11-13 | 2015-02-25 | 深圳市汇川控制技术有限公司 | Distributed control system based on CAN open protocol |
| CN104793507A (en) * | 2015-04-15 | 2015-07-22 | 安徽中程智能科技有限公司 | Building intelligent auto-control system DDC (direct digital control) and auto-control method |
| CN106059833A (en) * | 2016-07-28 | 2016-10-26 | 武汉虹信技术服务有限责任公司 | Multi-protocol adaptation method and system applied to intelligent building platform |
| CN206523765U (en) * | 2017-03-08 | 2017-09-26 | 信阳师范学院 | LAN automatic control system based on PIC single chip microcomputer |
| CN107295108A (en) * | 2017-08-14 | 2017-10-24 | 安徽简道科技有限公司 | The network communication method of automatic building control system |
| CN108268019A (en) * | 2018-02-11 | 2018-07-10 | 合肥图久智能科技有限公司 | Building automatic control system based on P-BUS buses |
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