Signal conversion board for EC fan control

Abstract

The utility model belongs to the technical field of EC fan control systems, and particularly relates to a signal conversion board for EC fan control. According to the signal conversion board for controlling the EC fan, the CAN communication module, the first RS485 communication module, the 0-10V control module and the 4-20mA control module are integrated on the board body, and the requirements of different control modes of various clients can be met through two dial codes, one dial code is used for adjusting a working mode, and the other dial code is used for adjusting an address, so that the burning operation of staff is reduced, and the working efficiency is improved. Subsequent testing is facilitated, the requirements of different clients can be met, and meanwhile the consistency of shipment of fan manufacturers is kept.

Description

Technical Field

[0001] This utility model belongs to the technical field of EC wind turbine control system, specifically relating to a signal conversion board for EC wind turbine control. Background Technology

[0002] EC fans refer to centrifugal fans that use digital brushless DC external rotor motors or centrifugal fans that use EC motors. Currently, there are two control methods for EC axial flow fans on the market: due to the diverse needs of customers in the market, various control methods exist, such as RS485 communication, CAN communication, 0-10V control, and 4-20mA control.

[0003] The current control method for EC wind turbines has many shortcomings:

[0004] 1. When customers use RS485 control, each machine needs to be configured with an independent address. When there are many machines and many addresses, multiple addresses need to be configured when manufacturing the fan. Different customers have different baud rates and verification methods. Fan manufacturers need to customize the baud rate, verification method and address for each customer according to their needs. The disadvantage of this method is that the programming and testing are cumbersome.

[0005] 2. Customer needs vary. Some require 0-10V control, some require RS485 control, and some require CAN control. The requirements are numerous. The different functional requirements of the fans make the wiring, programming, etc. inconsistent, which can easily lead to confusion in the manufacturing process and make subsequent management inconvenient. Utility Model Content

[0006] The purpose of this invention is to provide a signal conversion board for EC fan control to solve the above-mentioned technical problems.

[0007] To solve the above-mentioned technical problems, this utility model provides a signal conversion board for EC fan control, characterized in that it includes:

[0008] MCU module;

[0009] The CAN communication module, the first RS485 communication module, the 0-10V control module, and the 4-20mA control module are connected to the MCU module.

[0010] The first DIP switch, connected to the MCU module, is used to control the operating mode;

[0011] The second DIP switch, connected to the MCU module, is used to adjust the address; and

[0012] The second RS485 communication module, which is connected to the MCU module, is used to connect to the EC wind turbine controller.

[0013] In one embodiment of this application, the MCU module is the minimum operating circuit of the MM32SPIN06 chip.

[0014] In one embodiment of this application, the first RS485 communication module and the second RS485 communication module are RS485 circuits of the ST485BDR chip.

[0015] In one embodiment of this application, the 0-10V control module is a 0-10V circuit.

[0016] In one embodiment of this application, the 4-20mA control module is a 4-20mA circuit.

[0017] In one embodiment of this application, the first DIP switch includes six small switches.

[0018] In one embodiment of this application, the second DIP switch includes four small switches.

[0019] The beneficial effects of this utility model are that the EC wind turbine control signal conversion board integrates a CAN communication module, a first RS485 communication module, a 0-10V control module, and a 4-20mA control module on the board. Through two DIP switches, one for adjusting the working mode and the other for adjusting the address, it can meet the needs of various customers for different control methods, reduce the number of employees performing programming operations, facilitate subsequent testing, and meet the needs of different customers while maintaining the consistency of wind turbine manufacturers' shipments.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the signal conversion board for EC fan control according to this utility model;

[0024] Figure 2 This is a schematic diagram of a preferred embodiment of the EC fan control signal conversion board of this utility model;

[0025] Figure 3 and Figure 4 This is a schematic diagram of the DIP switch representation of a preferred embodiment of the EC fan control signal conversion board of this utility model. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] See Figure 1 and Figure 2 In one embodiment of this application, the EC fan control signal conversion board includes:

[0028] MCU module; CAN communication module, first RS485 communication module, 0-10V control module and 4-20mA control module connected to the MCU module; first DIP switch connected to the MCU module for controlling the working mode; second DIP switch connected to the MCU module for adjusting the address; and second RS485 communication module connected to the MCU module for connecting to the EC fan controller.

[0029] Optionally, the MCU module is the minimum operating circuit of the MM32SPIN06 chip. It can be a circuit from the prior art.

[0030] Optionally, the first RS485 communication module and the second RS485 communication module are RS485 circuits of the ST485BDR chip. These can be circuits found in the prior art.

[0031] Optionally, the 0-10V control module is a 0-10V circuit. It can be a circuit in the prior art.

[0032] Optionally, the 4-20mA control module is a 4-20mA circuit. It can be a circuit from the prior art.

[0033] Optionally, in one embodiment, the first DIP switch includes six small switches; the second DIP switch includes four small switches.

[0034] For details, please refer to the DIP switch table. Figure 3 and Figure 4 .

[0035] In one application scenario, a customer needs 10 machines, requiring RS-485 control, addresses 1-10, a baud rate of 2400, and odd parity. Traditionally, each machine's address needs to be individually configured with RS-485 mode, a baud rate of 2400, and parity of 2400, and these addresses (1-10) need to be programmed separately. By using the EC fan control signal conversion board in this embodiment, the fans can be unified, and the customer can control them according to their needs. Figure 3 and Figure 4 The provided DIP switch table allows users to select the functions and requirements they need.

[0036] In summary, the signal conversion board for EC fan control of this utility model has the following advantages:

[0037] 1. Reduce the number of control modes for the EC fan and integrate all functions onto the signal conversion board;

[0038] 2. To meet the different needs of different customers, customers can adjust the control method and address according to their own needs;

[0039] 3. It is convenient for wind turbine manufacturers to program; only a unified file needs to be programmed, without the need to program settings such as corresponding addresses or modes.

[0040] 4. Facilitates wind turbine testing. When customers use communication mode and there are many addresses, a signal conversion board is used. The wind turbine address is 1 by default, so there is no need to change the address for testing, which also facilitates subsequent maintenance and management.

[0041] It should be noted that this utility model only improves the structure and component connection relationship of the signal conversion board for EC fan control. It does not improve the control program or method. Furthermore, the CAN communication module, the first RS485 communication module, the 0-10V control module, the 4-20mA control module, the second RS485 communication module, the MCU module, the first DIP switch, the second DIP switch, and the MCU module can all be implemented using existing technologies, and the connection methods between each module and the MCU module can also be existing technologies.

[0042] All the devices (parts whose specific structures are not specified) selected in this application are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0043] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A signal conversion board for EC fan control, characterized in that, include: MCU module; The CAN communication module, the first RS485 communication module, the 0-10V control module, and the 4-20mA control module are connected to the MCU module. The first DIP switch, connected to the MCU module, is used to control the operating mode; The second DIP switch, connected to the MCU module, is used to adjust the address; and The second RS485 communication module, which is connected to the MCU module, is used to connect to the EC wind turbine controller.

2. The signal conversion board for EC fan control according to claim 1, characterized in that, The MCU module is the minimum operating circuit of the MM32SPIN06 chip.

3. The signal conversion board for EC fan control according to claim 1, characterized in that, The first RS485 communication module and the second RS485 communication module are RS485 circuits of the ST485BDR chip.

4. The signal conversion board for EC fan control according to claim 1, characterized in that, The 0-10V control module is a 0-10V circuit.

5. The signal conversion board for EC fan control according to claim 1, characterized in that, The 4-20mA control module is a 4-20mA circuit.

6. The signal conversion board for EC fan control according to claim 1, characterized in that, The first DIP switch includes 6 small switches.

7. The signal conversion board for EC fan control according to claim 1, characterized in that, The second DIP switch includes four small switches.

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