CN114338737A - Method and system for processing gateway data of Internet of things - Google Patents
Method and system for processing gateway data of Internet of things Download PDFInfo
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- CN114338737A CN114338737A CN202111484009.0A CN202111484009A CN114338737A CN 114338737 A CN114338737 A CN 114338737A CN 202111484009 A CN202111484009 A CN 202111484009A CN 114338737 A CN114338737 A CN 114338737A
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Abstract
The invention discloses a method and a system for processing gateway data of the Internet of things, wherein the method comprises the steps that the gateway of the Internet of things with a register is connected with a plurality of sensors in a polling way, and data acquired by the sensors are mapped to the register of the gateway of the Internet of things; the gateway of the Internet of things generates a data frame from the data in the register according to a Modbus _ TCP protocol and pushes the data frame to an upper computer server; the upper computer server receives and processes the Modbus _ TCP data frame, and simultaneously sends a response frame to a register of the Internet of things gateway; the polling gateway sends a query frame, receives and analyzes a response frame, and sends effective data to the upper computer server in real time; the server receives the data frames transmitted by the gateway of the Internet of things and sends the effective data to the server of the upper computer in real time. The method has the advantages that each physical sensing device does not need to be traversed and accessed, and the pressure of an upper computer is greatly reduced.
Description
Technical Field
The invention relates to data acquisition of Internet of things equipment, in particular to a method and a system for processing gateway data of the Internet of things.
Background
In the field of the internet of things, a plurality of modes can connect the physical sensing equipment to an upper computer and push the data frames to the upper computer, and the upper computer can analyze the data frames according to the protocol format of the Modbus. However, some methods (such as a direct serial port connection method) require that the device is directly connected to an upper computer, which greatly limits the detection range of the physical sensing device; some methods (such as a serial server connection method) can solve the problem of detection range, but traverse access is required to each physical sensing device, so that the pressure of an upper computer is greatly increased.
Therefore, a method and a system for sharing the pressure of a server without limiting the detection range of the physical sensing device are needed to solve the problem that the physical sensing device uploads the detection data in real time in the internet of things.
Therefore, it is necessary to provide a method and a system for processing gateway data of the internet of things to solve the above problems.
Disclosure of Invention
In view of the above-mentioned problems, an object of the present invention is to provide a method and a system for processing gateway data of an internet of things, so as to solve the pressure of an upper computer when the gateway data of the internet of things is processed.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for processing gateway data of the Internet of things comprises the following steps: the method comprises the following steps that an Internet of things gateway with a register is connected with a plurality of sensors in a polling mode, and data acquired by the sensors are mapped to the register of the Internet of things gateway; the gateway of the Internet of things generates a data frame from the data in the register according to a Modbus _ TCP protocol and pushes the data frame to an upper computer server; the upper computer server receives and processes the Modbus _ TCP data frame, and simultaneously sends a response frame to a register of the Internet of things gateway; the polling gateway sends a query frame, receives and analyzes a response frame, and sends effective data to the upper computer server in real time; the server receives the data frames transmitted by the gateway of the Internet of things and sends the effective data to the server of the upper computer in real time.
And after receiving the query frame, the gateway of the Internet of things analyzes the query frame according to the Modbus _ TCP protocol, packages the data to be queried in the query frame into a response frame according to the Modbus _ TCP protocol, and sends the response frame to the upper computer server.
The upper computer server loads all data of the internet of things gateway information according to the internet of things gateway information complete file, receives a data frame sent by one gateway, analyzes an IP address in the data frame, determines which internet of things gateway sends the data frame, finds corresponding internet of things gateway information and analyzes data frame data.
After receiving the query frame, the gateway of the Internet of things analyzes the query frame according to a Modbus _ TCP protocol, packages data to be queried in the query frame into a response frame according to the Modbus _ TCP protocol, and sends the response frame to the upper computer server;
and the upper computer server analyzes the response frame according to the information document of the Internet of things gateway after obtaining the response frame sent back by the Internet of things gateway, and meanwhile, pushes the analyzed data into the upper computer server.
In order to achieve the purpose, the invention also adopts the following technical scheme: a system for processing internet of things gateway data, comprising: the Internet of things gateway is provided with a register, is used for polling all the sensors connected with the RS485 physical interface, and is used for mapping the acquired data to the register of the Internet of things gateway; and the upper computer server is used for polling and sending a query frame to the gateway, receiving and analyzing a response frame and storing the effective data in real time.
Compared with the prior art, the method and the system for processing the gateway data of the Internet of things have the advantages that the response frame is analyzed according to the Modbus communication protocol format, traversal access to each physical sensing device is not needed, and the pressure of an upper computer is greatly reduced.
Drawings
Fig. 1 is a schematic flow chart of a method for processing gateway data of the internet of things according to the invention;
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below through the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The gateway of the Internet of things is provided with 2 paths of RS485 buses and can be connected with a plurality of (for example, 10) physical sensing devices, the data of the physical sensing devices connected with and supporting RS485 communication interfaces are acquired to a register corresponding to the gateway of the Internet of things, the gateway of the Internet of things adopts a standard Modbus _ RTU communication protocol and has a master-slave protocol function, namely, the gateway of the Internet of things can only access a slave machine actively, and the gateway of the Internet of things initiates data exchange actively.
The gateway of the Internet of things has the function of the Ethernet, and the communication protocol is Modbus _ Tcp. Namely, the gateway can send the data collected by the gateway to the upper computer in real time. The gateway of the Internet of things has an I/O point and can define a logic function by self. The gateway of the Internet of things also has a power-off self-storage data function, and can automatically operate after the network is disconnected, namely automatically operate according to a preset function.
The invention relates to a system for processing gateway data of the Internet of things, which comprises:
the Internet of things gateway is provided with a register and is used for polling all sensors connected with the RS485 physical interface, and the sensors map the acquired data to the register of the Internet of things gateway;
and the upper computer server is used for polling and sending a query frame to the gateway, receiving and analyzing a response frame and storing the effective data in real time.
The upper computer server starts service, receives the data frame transmitted by the gateway and sends the effective data to a storage server (such as an MQTT server) in real time.
Referring to fig. 1, a schematic flow chart of the method for processing gateway data of the internet of things according to the present invention is shown.
The invention relates to a method for processing gateway data of an Internet of things, which comprises the following steps:
step 1: the internet of things gateway with the register is connected with the sensors in a polling mode, and data acquired by the sensors are mapped to the register of the internet of things gateway.
The upper computer server starts a timing task, the timing task polls and accesses all the Internet of things gateways according to set time, and after the timing task reads the information of the Internet of things gateways, the Internet of things gateways send query frames to all the sensors to obtain data.
And polling the Internet of things gateway (the polling acquisition time is 100ms) to acquire data of a sensor connected on the RS485 bus, putting the acquired data into a corresponding register of the Internet of things gateway, and then taking out the data by using a Modbus _ TCP protocol mode by using the server. The sensors may be analog or on-off or any of the other categories. The gateway maps all physical interfaces (RS485) and the data collected by the analog quantity sensor in real time to a register of the gateway.
Step 2: the gateway of the Internet of things generates a data frame from the data in the register according to a Modbus _ TCP protocol and pushes the data frame to an upper computer server; and the upper computer server receives and processes the Modbus _ TCP data frame and simultaneously sends a response frame to a register of the Internet of things gateway.
Specifically, the upper computer server loads all data of the internet of things gateway information according to the internet of things gateway information complete file, receives a data frame sent by one gateway, analyzes an IP address in the data frame, determines which internet of things gateway sends the data frame, finds corresponding internet of things gateway information, and analyzes data frame data.
The upper computer server sends a Modbus _ TCP query frame to the Internet of things gateway, the Internet of things gateway generates a data frame from the data in the register according to a Modbus _ TCP protocol and pushes the data frame to the upper computer server, and the upper computer server analyzes the data frame according to the Modbus _ TCP protocol.
The method comprises the following specific steps:
step 21: after receiving the query frame, the gateway of the Internet of things analyzes the query frame according to a Modbus _ TCP protocol, packages data to be queried in the query frame into a response frame according to the Modbus _ TCP protocol, and sends the response frame to the upper computer server;
because the information of the upper computer server and the sensors is built in all the internet of things gateways, all the data in the register are packaged into data frames at regular time by the internet of things gateways according to the Modbus _ TCP protocol and are pushed to the port service monitored by the upper computer server.
Step 22: and the upper computer server analyzes the response frame according to the information document of the Internet of things gateway after obtaining the response frame sent back by the Internet of things gateway, and simultaneously pushes the analyzed data to an upper computer server (MQTT server).
And step 3: the polling gateway sends a query frame, receives and analyzes a response frame, and sends effective data to the upper computer server in real time; the server receives the data frames transmitted by the gateway of the Internet of things and sends the effective data to the server of the upper computer in real time.
And after the upper computer server analyzes the data frame, assigning values to all sensor detection parameters in the gateway of the Internet of things, and simultaneously pushing the detected parameter values to the MQTT server by the upper computer server according to the sensor as a unit.
The two modes are used for completing the interaction of the data receiving service of the gateway of the Internet of things and the upper computer.
The gateway of the Internet of things can collect the measurement data of the lower computer in real time and upload the data to the upper computer server. Meanwhile, the inquiry frame sent by the upper computer is analyzed, the real-time data is sent to the upper computer in a Modbus communication protocol format, the response frame is analyzed according to the Modbus communication protocol format, traversing access to each physical sensing device is not needed, and the pressure of the upper computer is greatly reduced.
Claims (5)
1. A method for processing gateway data of the Internet of things is characterized by comprising the following steps:
step 1, an Internet of things gateway with a register is connected with a plurality of sensors in a polling mode, and data acquired by the sensors are mapped to the register of the Internet of things gateway;
step 2, the gateway of the Internet of things generates a data frame from the data in the register according to a Modbus _ TCP protocol, and pushes the data frame to an upper computer server; the upper computer server receives and processes the Modbus _ TCP data frame, and simultaneously sends a response frame to a register of the Internet of things gateway;
step 3, the polling gateway sends a query frame, receives and analyzes a response frame, and sends effective data to an upper computer server in real time; the server receives the data frames transmitted by the gateway of the Internet of things and sends the effective data to the server of the upper computer in real time.
2. The method for processing gateway data of internet of things according to claim 1, wherein in the step 1; and after receiving the query frame, the gateway of the Internet of things analyzes the query frame according to the Modbus _ TCP protocol, packages the data to be queried in the query frame into a response frame according to the Modbus _ TCP protocol, and sends the response frame to the upper computer server.
3. The method for processing gateway data of the internet of things according to claim 2, wherein the step 2 specifically comprises: the upper computer server loads all data of the internet of things gateway information according to the internet of things gateway information complete file, receives a data frame sent by one gateway, analyzes an IP address in the data frame, determines which internet of things gateway sends the data frame, finds corresponding internet of things gateway information and analyzes data frame data.
4. The method for processing gateway data of internet of things according to claim 2, wherein the step 2 comprises:
step 21, after receiving the query frame, the gateway of the internet of things analyzes the query frame according to the Modbus _ TCP protocol, packages data to be queried in the query frame into a response frame according to the Modbus _ TCP protocol, and sends the response frame to the upper computer server;
and step 22, the upper computer server analyzes the response frame according to the information document of the internet of things gateway after obtaining the response frame sent back by the internet of things gateway, and meanwhile, pushes the analyzed data to the upper computer server.
5. A system for processing gateway data of the Internet of things, comprising:
the gateway of the Internet of things is provided with a register and is used for polling all the sensors connected with the RS485 physical interface,
the analog quantity sensor is used for mapping the acquired data to a register of the gateway of the Internet of things;
and the upper computer server is used for polling and sending a query frame to the gateway, receiving and analyzing a response frame and storing the effective data in real time.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114786074A (en) * | 2022-06-20 | 2022-07-22 | 中国空气动力研究与发展中心低速空气动力研究所 | Transmission method and transmission system for wind tunnel pressure measurement data |
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