CN204089854U - A kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C - Google Patents

Abstract

The utility model relates to electronic information technical field, discloses a kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C.Comprise fpga chip, VPC3+C chip, isolation protective circuit and RS485 bus driver, VPC3+C chip is connected with simulation address bus by analog data bus with fpga chip; VPC3+C chip is connected with isolation protective circuit and RS485 bus driver successively; Power supply is powered to pitch-controlled system controller, fpga chip, dual port RAM, VPC3+C chip, isolation protective circuit and RS485 bus driver; Dual port RAM connects fpga chip and VPC3+C chip; Pitch-controlled system is connected with fan master control system by PROFIBUS-DP bus.The utility model adopts fpga chip to control the switching signal of pitch-controlled system, and complete data communication, make pitch-controlled system compact conformation, resource is fully used.Hardware resource in use FPGA establishes the information transfer channel between fpga chip and VPC3+C chip, and avoid bamboo product data interaction interface, sampled data directly can be write FPGA specified memory by pitch-controlled system controller.

Description

A kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C

Technical field

The utility model relates to electronic information technical field, a kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C that pitch-controlled system resource can be made specifically to be fully used.

Background technology

Wind generating technology is with fastest developing speed in current new energy development application, maximum new energy use technology of making a profit.Electric variable propeller system is part important in wind turbine generator, which control Wind energy extraction and the generating efficiency of blower fan, therefore ensures with the reliability communicated between fan master control system, accuracy to be the most important thing that pitch-controlled system communicates with real-time.At present, usually ethernet communication mode is adopted in blower fan, due to Ethernet employing is the Carrier Sense Multiple Access agreement of CSMA/CD(with conflict), the requirement of real-time of transfer of data cannot be ensured, and it is abundant not to the utilization of system resource, there will be the situation of network paralysis when data volume is large, even cause the potential safety hazard of blower fan.

Utility model content

The purpose of this utility model is to provide a kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C, to solve the requirement of real-time that CSMA/CD communication mode cannot ensure transfer of data, to the utilization problem not fully of system resource.

For achieving the above object, the utility model adopts following technical scheme:

A kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C, comprise fpga chip, VPC3+C chip, isolation protective circuit and RS485 bus driver, VPC3+C chip is connected with simulation address bus by analog data bus with fpga chip; VPC3+C chip is connected with isolation protective circuit and RS485 bus driver successively; Power supply is powered to pitch-controlled system controller, fpga chip, dual port RAM, VPC3+C chip, isolation protective circuit and RS485 bus driver; Dual port RAM connects fpga chip and VPC3+C chip; Pitch-controlled system is connected with fan master control system by PROFIBUS-DP bus.

As further improvement of the utility model, described fpga chip is connected pitch-controlled system controller by read-write control signal, data/address bus with address bus, and sampled data is write direct FPGA specified memory by pitch-controlled system controller.

Further improve as of the present utility model, described VPC3+C chip is controlled by FPGA.

Further improve as of the present utility model, described power module can produce 1.9V and 3.3V voltage, is made up of TPS76801Q chip and TPS75733 chip.Its input voltage range is 4-5.5V.

Further improve as of the present utility model, what isolation protective circuit adopted is ADuM1201 binary channels isolator.

Further improve as of the present utility model, described fpga chip model is: EP2C5F256I8.

Further improve as of the present utility model, the transceiver model that RS485 bus driver adopts is ADM2486.

The utility model adopts FPGA technology, and on the one hand, fpga chip controls the switching signal of pitch-controlled system, on the other hand, completes data communication, and make pitch-controlled system compact conformation, resource is fully used.The mode that fpga chip and pitch-controlled system controller adopt data/address bus, address bus and control signal to be connected, avoids bamboo product data interaction interface, and sampled data directly can be write FPGA specified memory by pitch-controlled system controller.Fpga chip adopts analog data bus, simulation address bus is connected VPC3+C chip with control signal, and the hardware resource in use FPGA establishes the information transfer channel between fpga chip and VPC3+C chip.

The utility model, as the communication interface of pitch-controlled system and fan master control system, can be connected with the perfection of blower fan main control PLC, well solve the requirement of pitch-controlled system and blower fan Master Communications real-time, accuracy and reliability.

Accompanying drawing explanation

Fig. 1 is the utility model pitch-controlled system PROBIFUS-DP interface hardware schematic diagram;

Fig. 2 is FPGA main program flow chart;

Fig. 3 is FPGA interrupt processing flow chart.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

A kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C as shown in Figure 1, comprises FPGA (model EP2C5F256I8) chip, VPC3+C chip, isolation protective circuit, RS485 bus driver, dual port RAM (model C Y7C006AV) and power supply.Wherein fpga chip realizes being connected with address bus with the data/address bus of VPC3+C chip by simulation.

The fpga chip of EP2C5F256I8 model is the Cyclone Series FPGA that ALTERA company of the U.S. releases, and have 256 pins, temperature resistant range, between-40 DEG C to 85 DEG C, meets the demand of pitch-controlled system operational environment.EP2C5F256I8 control PROFIBUS-DP communicate and pitch-controlled system in switching value, for pitch-controlled system has saved cost.

VPC3+C chip is Siemens Company is the production of PROFIBUS communication protocol specially, and it can complete PROFIBUS-DP protocol conversion automatically, and ram space size is 4KB, can configure its mode of operation by external pin XCS, adds the flexibility of operation.

FPGA is connected with pitch-controlled system controller with address bus by data/address bus.Pitch-controlled system controller is in the specified memory write data of FPGA, and FPGA reads the input-buffer of data write VPC3+C from internal memory, and the data in input-buffer are sent to fan master control system by VPC3+C automatically, complete uploading of data.

Use ADuM1201 binary channels isolating chip to be isolated by signal between VPC3+C chip and RS485 bus driver interface, improve the antijamming capability of system.ADuM1201 is the two-channel digital isolator of the iCoupler magnetic coupling isolation technology based on ADI (Analog device, inc) company.Have employed the transformer technology of high-speed cmos technique and chip-scale, in the advantage that the everyways such as performance, power consumption, volume have photoelectric isolating device incomparable.

Fpga chip provides RS232 serial ports, for debugging or communicating with host computer.

As shown in Figure 2, after system electrification, first to carry out resource distribution to FPGA, to be read and write VPC3+C chip by simulation address bus and data/address bus.Reset VPC3+C, cleaning VPC3+C internal memory, the initial work that VPC3+C register and initialization VPC3+C buffer memory are all VPC3+C is set.After starting VPC3+C, FPGA arranges VPC3+C parameter, checks whether VPC3+C configuration is correct.After more than having operated, VPC3+C enters exchanges data state, waits for the request of data message of fan master control system.

As shown in Figure 3, when receiving the message that main website sends, VPC3+C produces corresponding interruption according to different messages.FPGA judges interrupt type by the interrupt flag register reading VPC3+C, and response is interrupted.FPGA interruption to be processed comprises: enter or exit exchanges data state interrupt, baud rate detection interruption, the interruption of house dog spilling, the interruption of reception overall control message, tributary address change interruption, the interruption of receiving parameter message, the interruption of reception configuration message, diagnostic message interruption and the interruption of reception data.

Above content is the detailed description done preferred embodiment of the present utility model; can not assert that embodiment of the present utility model is only limitted to this; for the utility model person of an ordinary skill in the technical field; the any amendment, replacement, deduction, improvement etc. made under prerequisite of the present utility model, all should be included within protection range of the present utility model.

Claims (7)

1. the electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C, it is characterized in that, comprise fpga chip, VPC3+C chip, isolation protective circuit and RS485 bus driver, VPC3+C chip is connected with simulation address bus by analog data bus with fpga chip; VPC3+C chip is connected with isolation protective circuit and RS485 bus driver successively; Power supply is powered to pitch-controlled system controller, fpga chip, dual port RAM, VPC3+C chip, isolation protective circuit and RS485 bus driver; Dual port RAM connects fpga chip and VPC3+C chip; Pitch-controlled system is connected with fan master control system by PROFIBUS bus.

2. a kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C according to claim 1, is characterized in that: described fpga chip is connected with pitch-controlled system controller with control signal by data/address bus, address bus.

3. a kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C according to claim 1, is characterized in that: described VPC3+C chip is controlled by FPGA.

4. a kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C according to claim 1, it is characterized in that: described power supply can produce 1.9V and 3.3V voltage, be made up of TPS76801Q chip and TPS75733 chip, its input voltage range is 4-5.5V.

5. a kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C according to claim 1, is characterized in that: what described isolation protective circuit adopted is ADuM1201 binary channels isolator.

6. a kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C according to claim 1, is characterized in that: described fpga chip model is: EP2C5F256I8.

7. a kind of electric variable propeller system PROFIBUS-DP communication interface based on FPGA and VPC3+C according to claim 1, is characterized in that: the transceiver model that described RS485 bus driver adopts is ADM2486.