CN205265734U - EtherCAT slave station changes communication unit of canopen main website based on DSP - Google Patents

Abstract

The utility model provides an etherCAT slave station changes communication unit of canopen main website based on DSP has FPGA chip, DSP unit, CAN module and the power module of two net gapes, the DSP unit passes through serial port connection with FPGA chip and CAN module, and power module is FPGA chip, DSP unit and the power supply of CAN module. The utility model discloses communication unit has characteristics such as supercomputing, fast switching, and the high efficiency is accomplished the power electronic equipment who only possesses canopen communication interface and is added etherCAT control looped netowrk.

Description

A kind of EtherCAT slave station based on DSP turns the communication unit of Canopen main website

Technical field

The utility model belongs to Industry Control communication technique field, especially relates to a kind of based on DSP'sEtherCAT slave station turns the communication unit of Canopen main website.

Background technology

Along with social development, new forms of energy industry gradually obtained attention, unstable due to new forms of energyProperty, not confirmability, and the impact that brings of weather, cause generated energy fluctuation obviously, affects whole electricityThe balance of net, therefore builds on a large scale generation of electricity by new energy factory and is restricted, in this case, pointThe generating of cloth formula, intelligent micro-grid has made up above shortcoming. So-called intelligent micro-grid, by electricity generation system,Energy-storage system, minor scale power net, micro-electrical network that load forms, it has high speed and regulates the equilibrium of supply and demand, grid-connected,From features such as the quick switchings of net. Wherein electricity generation system: wind power generating set, photovoltaic generation is main. Energy storageSystem: battery, super capacitor is main. Load: household electricity gas equipment, the equipment of industrial product etc.

Because the scale of micro-electrical network is less, distribute, can reach generating in microgrid, in microgrid, electric energy disappearsConsumption, dump energy also brings the advantages such as income to electrical network, approved gradually. Because micro-electrical network is frequentBetween grid-connected and islet operation pattern, switch mutually, the control strategy of whole microgrid and response speed highlightParticularly important. Especially turn in isolated island process grid-connected, the very first time of energy storage device gets involved, and concernsThe success or failure of whole microgrid.

Along with incorporating of the new and high technology of field of power electronics, quilt gradually of EtherCAT communication protocolBe applied in intelligent micro-grid, the association areas such as intelligent distribution network. The property such as it is in real time high at a high speed, and height is synchronousCan obtain the extensive accreditation of industry. But because technology is excessively new, not tool of a lot of old brand power electronic equipment portionsStandby EtherCAT communication interface, only possesses widely used Canopen communication interface in industry, makesEtherCAT agreement is met bottleneck in the application aspect of these power electronic equipments.

So, need to design a kind of EtherCAT slave station and turn the communication unit of Canopen main website, separateThe current power electronic equipment of determining adds EtherCAT to control the specialized protocol stack problem in network, is electric powerElectronic equipment adds EtherCAT looped network to create favorable conditions.

Utility model content

In view of this, the utility model is intended to propose a kind of EtherCAT slave station based on DSP and turnsThe communication unit of Canopen main website, can high efficiency complete the electric power electricity that only possesses Canopen communication interfaceSubset adds EtherCAT to control looped network.

For achieving the above object, the technical solution of the utility model is achieved in that

EtherCAT slave station based on DSP turns a communication unit for Canopen main website, comprises and havingFpga chip, DSP unit, CAN module and the power module of two network interfaces, described DSP unit and FPGAChip is connected by serial ports with CAN module, and power module is fpga chip, DSP unit and CAN modulePower supply.

Further, described DSP unit adopts a TMS320C28X series Floating-point DSP of TI companyController TMS320F28335.

Further, described fpga chip adopts EtherCAT EPA chip ET1200.

Further, described CAN module comprises CAN controller and the CAN transceiver that signal connects.

Further, described power module comprise successively the power input interface that connects, filter circuit of pressure-stabilizing,The first transformer, voltage-stablizer, the second transformer and output.

With respect to prior art, the utlity model has following advantage:

(1) the utility model has solved the power electronic equipment that only possesses Canopen communication interface at presentAdd EtherCAT to control the specialized protocol stack in network, for power electronic equipment adds EtherCAT ringNet creates favorable conditions;

(2) circuit design is reasonable, easily realizes.

Brief description of the drawings

The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model,Schematic description and description of the present utility model is used for explaining the utility model, does not form this realityWith novel improper restriction. In the accompanying drawings:

Fig. 1 is that the EtherCAT slave station based on DSP turns Canopen master described in the utility model embodimentThe structure principle chart of the communication unit of standing;

Fig. 2 is ethercat side schematic diagram described in the utility model example;

Fig. 3 is the circuit diagram of CAN module described in the utility model example;

Fig. 4 is the circuit diagram of power module described in the utility model embodiment.

Detailed description of the invention

It should be noted that, in the situation that not conflicting, in embodiment and embodiment in the utility modelFeature can mutually combine.

Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.

EtherCAT slave station based on DSP turns a communication unit for Canopen main website, as Fig. 1 instituteShow, comprise fpga chip, DSP unit, CAN module and the power module with two network interfaces, described DSPUnit is connected by serial ports with fpga chip and CAN module, and power module is that fpga chip, DSP are mono-Unit and CAN module for power supply.

Described DSP unit adopts a TMS320C28X series Floating-point DSP controller of TI companyTMS320F28335。

Described fpga chip adopts EtherCAT EPA chip ET1200, as shown in Figure 2, and FPGAChip is connected RJ45 interface by PHY chip with network transformer.

As shown in Figure 3, described CAN module comprises CAN controller and the CAN transceiver that signal connects.

As shown in Figure 4, described power module comprises the power input interface, the voltage regulation filtering electricity that connect successivelyRoad, the first transformer, voltage-stablizer, the second transformer and output.

Power module, possesses 5V, 3.3V electric pressure, and support that can be stable, not whole communication unit suppliesElectricity; And the power filter function that tool is perfect, for the various piece of communication unit in communication cartridge provides stableClean power supply.

The communication unit that EtherCAT slave station based on DSP turns Canopen main website is at power electronic equipmentControl network with EtherCAT and carry out protocol conversion, for power electronic equipment adds EtherCAT looped network woundMake advantage.

The foregoing is only preferred embodiment of the present utility model, not new in order to limit this practicalityType, all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improveDeng, within all should being included in protection domain of the present utility model.

Claims (5)

1. the EtherCAT slave station based on DSP turns a communication unit for Canopen main website, its featureBe to comprise: there is fpga chip, DSP unit, CAN module and the power module of two network interfaces, described inDSP unit is connected by serial ports with fpga chip and CAN module, and power module is fpga chip, DSPUnit and CAN module for power supply.

2. the EtherCAT slave station based on DSP according to claim 1 turns Canopen main websiteCommunication unit, is characterized in that: described DSP unit adopts dsp controller TMS320F28335, passes throughSPI interface connects fpga chip.

3. the EtherCAT slave station based on DSP according to claim 1 turns Canopen main websiteCommunication unit, is characterized in that: described fpga chip adopts EtherCAT EPA chipET1200, fpga chip is connected RJ45 interface by PHY chip with network transformer.

4. the EtherCAT slave station based on DSP according to claim 1 turns Canopen main websiteCommunication unit, is characterized in that: described CAN module comprises that CAN controller and CAN that signal connects receiveHair device.

5. the EtherCAT slave station based on DSP according to claim 1 turns Canopen main websiteCommunication unit, is characterized in that: described power module comprises the power input interface, the voltage stabilizing that connect successivelyFilter circuit, the first transformer, voltage-stablizer, the second transformer and output.