CN219145524U

CN219145524U - Analog quantity acquisition module with Ethernet interface and 485 interface

Info

Publication number: CN219145524U
Application number: CN202221932915.2U
Authority: CN
Inventors: 刘路
Original assignee: Shijiazhuang Kunhang Electric Automation Technology Co ltd
Current assignee: Shijiazhuang Kunhang Electric Automation Technology Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2023-06-06
Anticipated expiration: 2032-07-26

Abstract

The utility model discloses an analog quantity acquisition module with an Ethernet interface and a 485 interface, which comprises an analog quantity signal acquisition circuit and an MCU circuit, wherein the analog quantity signal acquisition circuit consists of a high-precision analog quantity acquisition chip and a peripheral circuit thereof, and is provided with thirty-two signal acquisition ports, and relates to the technical field of analog quantity acquisition of industrial sites. According to the utility model, the high-precision analog quantity acquisition chip is utilized to acquire instrument data, and then the STM32F103R8T6 chip is communicated with the analog quantity acquisition chip, and after analog quantity data conversion and calculation, the industrial-level chips W5500 and ADM2483 are output, and when the industrial-level chips W5500 and ADM2483 are connected with a computer, required data can be displayed in the computer, so that real-time data of a field instrument are monitored and recorded, and the labor and material cost are greatly reduced while the working efficiency is improved. The real reliability of the real-time data is guaranteed, and the recorded data is convenient for workers to analyze and check.

Description

Analog quantity acquisition module with Ethernet interface and 485 interface

Technical Field

The utility model relates to the technical field of analog quantity acquisition of industrial sites, in particular to the field of measurement of engineering quantities such as temperature, flow, pressure and the like, and in particular relates to an analog quantity acquisition module with an Ethernet interface and a 485 interface.

Background

Often in the field of industrial measurement, it is involved that tens of engineering quantity data such as temperature, pressure, liquid level, flow rate, etc. need to be collected.

The traditional measurement is only to install the digital meter at the switch board and is used for watching engineering quantity data, and is complicated to the workman, if there are tens or even hundreds of meters on the scene to need to monitor simultaneously, the workman uses the pen to copy one by one, and is too complicated, and the work load is big, difficult maintenance.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an analog quantity acquisition module with an Ethernet interface and a 485 interface, which solves the problems of complex operation, large workload and difficult maintenance of traditional engineering quantity data acquisition.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides an analog quantity acquisition module with ethernet interface and 485 interface, includes analog quantity signal acquisition circuit and MCU circuit, analog quantity signal acquisition circuit comprises high accuracy analog quantity acquisition chip and peripheral circuit thereof, and analog quantity signal acquisition circuit is provided with thirty-two way signal acquisition ports, analog quantity signal acquisition circuit passes through I2C bus and interfaces with MCU circuit, MCU circuit respectively with ethernet communication circuit and RS485 communication circuit interface, MCU circuit and power supply circuit electric connection, and power supply circuit respectively with analog quantity signal acquisition circuit, ethernet communication circuit and RS485 communication circuit electric connection.

Preferably, thirty-two paths of signal acquisition ports of the analog signal acquisition circuit are all provided with capacitors in series.

Preferably, the Ethernet communication circuit is composed of an industrial-grade chip W5500 and an HR911105A network cable RJ45 interface.

Preferably, the RS485 communication circuit is composed of an industrial chip ADM2483 and peripheral circuits thereof.

Preferably, the power supply circuit consists of an MC34063 chip and a 1117-3.3 chip.

Preferably, the MCU circuit is composed of an STM32F103R8T6 chip and peripheral circuits thereof.

Advantageous effects

The utility model provides an analog quantity acquisition module with an Ethernet interface and a 485 interface. Compared with the prior art, the method has the following beneficial effects:

(1) The analog quantity acquisition module with the Ethernet interface and the 485 interface is characterized in that an integrated module mainly comprising an analog quantity signal acquisition circuit is constructed, analog quantity data of an instrument are acquired by utilizing a high-precision analog quantity acquisition chip, the STM32F103R8T6 chip is communicated with the high-precision analog quantity acquisition chip, analog quantity data conversion and calculation are realized, required data can be displayed in a computer when the analog quantity acquisition module is connected with the computer through the industrial chip W5500 and the industrial chip ADM2483, the data of the instrument on the industrial site are monitored and recorded, a large amount of labor cost and material cost are reduced, the working efficiency is improved, the real reliability of real-time data is guaranteed, and workers can conveniently analyze and check the recorded data.

(2) The analog quantity acquisition module with the Ethernet interface and the 485 interface is connected with a computer through the matching setting of the Ethernet communication circuit and the RS485 communication circuit, software running on the computer is communicated with the Ethernet communication circuit and the RS485 communication circuit through a standard Modbus protocol, analog quantity data acquired by the analog quantity signal acquisition circuit are displayed and stored in a database of computer software, and workers can call and fetch at any time, so that inquiry and printing are convenient, labor is saved greatly, and efficiency is improved.

Drawings

FIG. 1 is a schematic block diagram of a system of the present utility model;

FIG. 2 is a schematic circuit diagram of an analog signal acquisition circuit according to the present utility model;

FIG. 3 is a schematic circuit diagram of the MCU circuit of the present utility model;

FIG. 4 is a schematic diagram of an Ethernet communication circuit according to the utility model;

FIG. 5 is a schematic diagram of an RS485 communication circuit according to the utility model;

fig. 6 is a circuit schematic of the power supply circuit of the present utility model.

In the figure: 1. analog quantity signal acquisition circuit; 2. an MCU circuit; 3. an Ethernet communication circuit; 4. an RS485 communication circuit; 5. a power supply circuit.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, the present utility model provides a technical solution: an analog quantity acquisition module with Ethernet interfaces and 485 interfaces is shown in figure 1, and comprises an analog quantity signal acquisition circuit 1, an MCU circuit 2, an Ethernet communication circuit 3, an RS485 communication circuit 4 and a power supply circuit 5, wherein the Ethernet interfaces and the RS485 communication interfaces are reserved after the analog quantity signal acquisition circuit 1, the MCU circuit 2, the Ethernet communication circuit 3, the RS485 communication circuit 4 and the power supply circuit 5 are integrated.

As a detailed description, the analog signal acquisition circuit 1 is composed of an MCP3421 high-precision analog acquisition chip and peripheral circuits thereof, in order to realize multi-station synchronous detection, the analog signal acquisition circuit 1 is provided with thirty-two signal acquisition ports, and it is to be noted that thirty-two signal acquisition ports of the analog signal acquisition circuit 1 are all provided with capacitors in series for playing roles of filtering and anti-interference.

Further, the analog signal acquisition circuit 1 is in butt joint with the MCU circuit 2 through an I2C bus, the MCU circuit 2 is in butt joint with the Ethernet communication circuit 3 and the RS485 communication circuit 4 respectively, wherein the Ethernet communication circuit 3 is composed of industrial-grade chips W5500 and HR911105A network cable RJ45 interfaces, stable and reliable communication effects are achieved in operation, the RS485 communication circuit 4 is composed of industrial-grade chips ADM2483 and peripheral circuits thereof, and the chips are in magnetic coupling isolation design, have reliable anti-interference capability, and further guarantee stable use in industrial occasions.

As a detailed description, the MCU circuit 2 is composed of an STM32F103R8T6 chip and its peripheral circuits, where the STM32F103R8T6 chip performs data processing, data calculation, and communication functions in the circuit.

Further, the MCU circuit 2 is electrically connected to the power supply circuit 5, and the power supply circuit 5 is electrically connected to the analog signal acquisition circuit 1, the ethernet communication circuit 3 and the RS485 communication circuit 4, respectively.

The power circuit 5 is composed of an MC34063 chip and an 1117-3.3 chip, and as a detailed description, the MC34063 chip converts direct current of 8-30V into direct current of 5V in a buck mode, and the 1117-3.3 chip converts direct current of 5V into 3.3V, so that direct current of 5V and 3.3V is respectively supplied to the analog quantity signal acquisition circuit 1, the MCU circuit 2, the Ethernet communication circuit 3 and the RS485 communication circuit 4 for use.

And all that is not described in detail in this specification is well known to those skilled in the art.

When the analog quantity signal acquisition circuit is used, thirty-two paths of signal acquisition ports of the analog quantity signal acquisition circuit 1 are respectively connected with ports required for acquiring engineering quantity data, after analog quantity data of an instrument are acquired by a high-precision analog quantity acquisition chip in the analog quantity signal acquisition circuit 1, the analog quantity data are amplified and calculated through communication between an I2C bus and an STM32F103R8T6 chip in the MCU circuit 2, meanwhile, the analog quantity data are connected with a computer through an Ethernet communication circuit 3 and an RS485 communication circuit 4 in a protocol manner, and the amplified and calculated analog quantity data are transmitted to computer software through the Ethernet communication circuit 3 and the RS485 communication circuit 4 for storage and display.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an analog quantity collection module with ethernet interface and 485 interface, includes analog quantity signal acquisition circuit (1) and MCU circuit (2), its characterized in that: the analog signal acquisition circuit (1) is composed of a high-precision analog acquisition chip and peripheral circuits thereof, the analog signal acquisition circuit (1) is provided with thirty-two paths of signal acquisition ports, the analog signal acquisition circuit (1) is in butt joint with the MCU circuit (2) through an I2C bus, the MCU circuit (2) is in butt joint with the Ethernet communication circuit (3) and the RS485 communication circuit (4) respectively, the MCU circuit (2) is electrically connected with the power supply circuit (5), and the power supply circuit (5) is electrically connected with the analog signal acquisition circuit (1), the Ethernet communication circuit (3) and the RS485 communication circuit (4) respectively.

2. An analog acquisition module with ethernet and 485 interfaces as claimed in claim 1, wherein: thirty-two paths of signal acquisition ports of the analog signal acquisition circuit (1) are all connected in series with capacitors.

3. An analog acquisition module with ethernet and 485 interfaces as claimed in claim 1, wherein: the Ethernet communication circuit (3) is composed of an industrial-grade chip W5500 and an HR911105A network cable RJ45 interface.

4. An analog acquisition module with ethernet and 485 interfaces as claimed in claim 1, wherein: the RS485 communication circuit (4) is composed of an industrial-grade chip ADM2483 and peripheral circuits thereof.

5. An analog acquisition module with ethernet and 485 interfaces as claimed in claim 1, wherein: the power supply circuit (5) consists of an MC34063 chip and a 1117-3.3 chip.

6. An analog acquisition module with ethernet and 485 interfaces as claimed in claim 1, wherein: the MCU circuit (2) is composed of an STM32F103R8T6 chip and peripheral circuits thereof.