CN214586473U - Spliced input/output module circuit - Google Patents

Abstract

The utility model discloses a formula I/O module circuit CAN splice, including the main control board, the DI board, the DO board, the AI board, the AO board, through SPI communication between each board, adopt row's needle female mode concatenation between board and the board, the main control board includes 32 MCU, the CAN interface, 2 way analog input and 2 way analog output, the DI board has MCU and 24 way digital input parts, 24 way digital input parts adopt the opto-coupler to keep apart, the DO board has MCU and 24 way digital output parts, the AI board has MCU and 6 way analog input parts, the AO board has MCU and 6 way analog output parts. Independent PCBs are made to each part, then the mode of splicing is adopted according to specific requirements, each part is spliced and assembled together, then the PCB module frame is packed into, this kind of concatenation formula input/output module can be nimble carry out IO module configuration according to customer's demand, reduce repeated research and development, reduce cost.

Description

Spliced input/output module circuit

Technical Field

The utility model relates to an input/output module circuit specifically is a formula input/output module circuit can splice.

Background

In a motion control system, a traditional input/output module generally adopts a single CPU and single PCB mode. The design mode has poor expandability and universality. When the user demand changes, the flexible configuration cannot be realized, and extra research and development cost is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a but concatenation formula input/output module circuit adopts many CPU's concatenation formula design, can cut out and add the concatenation module according to customer's demand is nimble, reduces the manufacturing cost of enterprise, reduces repeated research and development work.

The utility model provides a following technical scheme:

can splice formula input/output module circuit, including the main control board, the DI board, the DO board, the AI board, the AO board, through SPI communication between each board, adopt row's needle to arrange female mode concatenation between board and the board, the main control board includes 32 MCU, the CAN interface, 2 way analog input and 2 way analog output, the DI board has MCU and 24 way digital input part, 24 way digital input part adopts the opto-coupler to keep apart, the DO board has MCU and 24 way digital output part, the AI board has MCU and 6 way analog input parts, the AO board has MCU and 6 way analog output parts.

Further, the 24-path digital output part adopts 3 ULN2803A chips.

Further, the 6-path analog input part adopts 2 MC4558CN chips.

Further, the 6-path analog output part adopts 2 DAC7311IDCKR chips and 2 operational amplifiers MC4558 CN.

Further, the MCU employs STM32F030C8T 6.

Compared with the prior art, the beneficial effects of the utility model are that: the splicing type input and output module circuit comprises a main control board, a DI board, a DO board, an AI board and an AO board, wherein SPI communication is performed between each board, each part is made into an independent PCB, then each part is spliced and assembled together according to a splicing mode adopted by specific requirements, and then a PCB module frame is filled in.

Drawings

Fig. 1 is a schematic block diagram of the present invention.

Fig. 2 is a schematic diagram of the MCU of the main control board of the present invention.

Fig. 3 is the address diagram of the substation of the present invention.

Fig. 4 is a diagram of 2-way analog input and 2-way analog output.

Fig. 5 is a circuit diagram of the 24-way digital input portion of the present invention.

Fig. 6 is a diagram of the free switching between the 24V input detection and the 0V input detection.

Fig. 7 is a schematic diagram of the DO board of the present invention.

Fig. 8 is a schematic diagram of the AI board of the present invention.

Fig. 9 is a schematic diagram of the AO plate chip of the present invention.

Fig. 10 is a schematic diagram of the AO-board operational amplifier of the present invention.

Fig. 11 is a structural view of the present invention.

In the figure: 1. a main control board; 2. a DI sheet; 3. a DO plate; 4. an AI board; 5. an AO plate; 6. splicing edges; 7. an input/output terminal; 8. and a CAN interface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the spliceable input/output module circuit includes a main control board 1, a DI board 2, a DO board 3, an AI board 4, and an AO board 5, and the boards are communicated with each other through an SPI, and are spliced by a pin header and a bus header. The main control board 1 comprises a 32-bit MCU, a CAN interface 8, 2 analog inputs and 2 analog outputs, the DI board 2 is provided with an MCU and 24 digital input parts, the 24 digital input parts adopt optical coupling isolation, the DO board 3 is provided with an MCU and 24 digital output parts, the AI board 4 is provided with an MCU and 6 analog input parts, and the AO board 5 is provided with an MCU and 6 analog output parts.

In order to reduce the volume of the whole module, the power supply part (the main control board) adopts an upper-lower double-layer structure. Each part comprises a 32-bit MCU packaged as LQFP48 as a controller, and all the MCUs are mounted on an SPI bus to realize internal data exchange. Wherein, the MCU of the power supply part is used as a host computer of SPI communication, and the MCU of the rest part is used as a slave computer. The principle diagram of the main control part is shown in figure 2.

In addition, the MCU of the power supply part is also provided with CAN controller on-chip peripherals which are connected with the system in a CAN bus mode to realize data exchange with the system. As shown in fig. 3, the address of a substation can be selected by a 4-bit dial switch, and theoretically 16 sets of basic modules can be expanded.

As shown in fig. 4, the power supply portion also includes 2 analog inputs and 2 analog outputs, so as to meet the user requirement of low requirement on the number of analog inputs and outputs. The analog input is divided into analog current input and analog voltage input, and the module is designed in a cap-jumping mode, so that a current signal is converted into a voltage signal, and the purpose of detecting both input current and voltage is achieved.

An analog input circuit: 0-10V. If 0-20ma is input, the jump cap is inserted from 2-3 to 2-1 feet.

The DI board 2 has 24 digital input parts as shown in fig. 5, the 24 digital input parts adopt optical coupling isolation, and as shown in fig. 6, X0.0-X0.7 can be freely switched between 24V input detection and 0V input detection by means of a jump cap.

As shown in fig. 7, the DO board 3 has an MCU and a 24-way digital output section, and employs an MCU (STM32F030C8T6) and 3 ULN2803A chips.

As shown in fig. 8, the AI board 4 has an MCU and 6-way analog input section, and employs an MCU (STM32F030C8T6) and 2 MC4558CN chips.

As shown in fig. 9 and 10, the AO board 5 has an MCU and 6 analog output units, and employs an MCU (STM32F030C8T6), 2 DAC7311IDCKR chips, and 2 operational amplifiers MC4558 CN.

As shown in fig. 11, in the circuit composed of the main control board 1, the DI board 2, and the DO board 3, a splicing edge 6 is provided between adjacent boards, and the DI board and the DO board are provided with input/output terminals 7.

Independent PCBs are made to each part, then the mode of splicing is adopted according to specific requirements, each part is spliced and assembled together, then the PCB module frame is packed into, this kind of concatenation formula input/output module can be nimble carry out IO module configuration according to customer's demand, reduce repeated research and development, reduce cost. The flexible adding and cutting mode can effectively reduce the module size according to the customer requirements.

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

Claims (5)

1. Can splice formula input/output module circuit, its characterized in that: including main control panel (1), DI board (2), DO board (3), AI board (4), AO board (5), through SPI communication between each board, adopt row's needle to arrange female mode concatenation between board and the board, main control panel (1) includes 32 MCU, CAN interface, 2 way analog input and 2 way analog output, DI board (2) have MCU and 24 way digital input parts, and 24 way digital input parts adopt the opto-coupler to keep apart, DO board (3) have MCU and 24 way digital output parts, AI board (4) have MCU and 6 way analog input parts, AO board (5) have MCU and 6 way analog output parts.

2. The spliceable input-output module circuit of claim 1, wherein: the 24-path digital output part adopts 3 ULN2803A chips.

3. The spliceable input-output module circuit of claim 1, wherein: the 6-path analog input part adopts 2 MC4558CN chips.

4. The spliceable input-output module circuit of claim 1, wherein: the 6-path analog output part adopts 2 DAC7311IDCKR chips and 2 operational amplifiers MC4558 CN.

5. The spliceable input-output module circuit of claim 1, wherein: the MCU employed STM32F030C8T 6.

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