CN102566538A - Communication device and communication method for wind generating set - Google Patents
Communication device and communication method for wind generating set Download PDFInfo
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- CN102566538A CN102566538A CN2011104494223A CN201110449422A CN102566538A CN 102566538 A CN102566538 A CN 102566538A CN 2011104494223 A CN2011104494223 A CN 2011104494223A CN 201110449422 A CN201110449422 A CN 201110449422A CN 102566538 A CN102566538 A CN 102566538A
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- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a communication device and a communication method for a wind generating set. The communication device comprises at least one digital signal processor (DSP), wherein each DSP is connected with at least one isolation converter which can be connected with a generator controller or/and a main controller or/and an inverter or/and a monitoring system or/and a man-machine interface; two DSPs communicate with each other; each DSP is connected with a controller area network (CAN) port communication driving circuit; the CAN port communication driving circuit is connected with the CAN port of each DSP; and each DSP is provided with a generator controller data storage area, a main controller data storage area, an inverter data storage area, a monitoring system data storage area and a man-machine interface data storage area. By the communication device and the communication method, an exclusive electric signal pathway can be provided for each communication terminal, and data can be quickly, stably and safely transmitted from one device to another device.
Description
Technical field
The present invention relates to data communication field, relate to a kind of communicator and communication means thereof of wind power generating set or rather.
Background technology
The control system of wind power generating set is the core component of wind power generating set, and can its final decision unit normal reliable move efficiently.Wind power generating set comprises master controller, combining inverter and engine controller.Between these devices and all need data such as a large amount of control commands of real-time exchange and operational factor between these devices and the supervisory system.
In the communications field,, be widely used in each communication between installing of wind power generating set because RS-485 bus and CAN bus have advantages such as wiring is simple, reliable and stable.Adopt the equipment of RS-485 communication to carry out data transmission through converter and the communication facilities that has the CAN mouth.Generally adopting bus mode to carry out data between the equipment that adopts RS-485 to communicate by letter transmits.Adopt bus mode to carry out data transmission equally between the equipment that adopts CAN to communicate by letter.Owing to adopt the bus communication mode, can only between two equipment, carry out data communication on any moment bus, data rate is slow, poor stability, poor stability.
Summary of the invention
The technical matters that the present invention will solve is, provide a kind of can be for each communication terminal provides the pathway for electrical signals that exclusively enjoys, making between each equipment can be fast, stable and transmit the communicator of the wind power generating set of data safely.
Technical solution of the present invention is; A kind of communicator with wind power generating set of following structure is provided; Comprise at least one digital signal processor; Each digital signal processor all be connected with at least one can be with engine controller or/and master controller or/and inverter or/and supervisory system or/and the isolating converter that man-machine interface is connected, communication connects between two digital signal processors; Each digital signal processor all is connected with CAN port communications driving circuit, and described CAN port communications driving circuit is connected with the CAN mouth of digital signal processor; Each digital signal processor is provided with engine controller region of data storage, master controller region of data storage, inverter region of data storage, supervisory system region of data storage and man-machine interface region of data storage; Each region of data storage includes Data Receiving district and data transmission interval, and each data transmission interval has all been deposited pointer; The address of variable of all digital signal processors is all identical.
After adopting above structure, the communicator of wind power generating set of the present invention compared with prior art has the following advantages:
Because the communicator of wind power generating set of the present invention is through digital signal processor, isolating converter; The Data Receiving district of each memory block of digital signal processor is used to preserve the data that corresponding device sends to digital signal processor; Some variable in the Data Receiving district of other equipment of pointed that deposit the data transmission interval the inside, the variable set of all pointed of data transmission interval then will send to the data of this equipment for digital signal processor.Data transmission interval and the Data Receiving district of digital signal processor through each equipment realizes each data transfer between devices, and between each equipment the pathway for electrical signals that exclusively enjoys is provided, and making between each equipment can be fast, stablize and transmit data safely.
As a kind of improvement of the present invention, adopt SPI communication to connect between two digital signal processors.
As another kind of improvement the of the present invention, described digital signal processor is two, and each digital signal processor all is connected with two isolating converters, and two isolating converters are connected with the SCIB mouth with the SCIA mouth of corresponding digital signal processor respectively.
Also have a kind of improvement as of the present invention, described isolating converter is the RS-485 isolating converter.
The present invention also provide a kind of can be for each communication terminal provides the pathway for electrical signals that exclusively enjoys, making between each equipment can be fast, stable and transmit the communication means of the wind power generating set of data safely.
Another kind of technical solution of the present invention is, a kind of communication means of wind power generating set is provided, and may further comprise the steps:
The Data Receiving district of each storage area is used to preserve the data that corresponding device sends to digital signal processor; Some variable in the Data Receiving district of other equipment of pointed that the data transmission interval of each storage area is deposited, the variables set of all pointed of the data transmission interval of each storage area is combined into the data that digital signal processor sends to corresponding device;
If variable SCIA_FLAG, SCIB_FLAG, CAN_FLAG are respectively applied for the success of whether communicating by letter of mark SCIA mouth, SCIB mouth, CAN mouth; SCIA_AD, SCIB_AD, CAN_AD are respectively applied for the address that mark SCIA mouth, SCIB mouth, CAN mouth receive information frame, and these addresses have represented that information frame belongs to the equipment in engine controller, master controller, inverter, supervisory system and the man-machine interface;
(1), program begins;
(2), judge whether SCIA_FLAG equals 1; Concrete determining step is following:
(1), SCIA interrupts inlet;
(2), the address in the reading of data and being kept among the SCIA_AD;
(3), receive data;
(4), judge whether receive data length equals information frame data indicating length;
(5), receive data length and equal information frame data indicating length, judge whether CRC check is passed through; Receive data length and be not equal to information frame data indicating length, EOI;
(6), CRC check passes through, with the Data Receiving district of data storing to the corresponding stored district, SCIA_FLAG equals 1 according to SCIA_AD; CRC check is not passed through, and empties all and receives data, waits for next information frame;
(7), EOI;
(3), SCIA_FLAG equals 1, the data that SCIA_AD corresponding stored district data transmission interval is pointed to send through the SCIA mouth; The data in Data Receiving district send to other digital signal processors through the SPI mouth, make the data of each digital signal processor stored identical, and the SCIA_FLAG that resets makes SCIA_FLAG=0; SCIA_FLAG is not equal to 1, jumps to the SCIB mouth;
(4), judge whether SCIB_FLAG equals 1; Concrete determining step is following:
(1), SCIB interrupts inlet;
(2), the address in the reading of data and being kept among the SCIB_AD;
(3), receive data;
(4), judge whether receive data length equals information frame data indicating length;
(5), receive data length and equal information frame data indicating length, judge whether CRC check is passed through; Receive data length and be not equal to information frame data indicating length, EOI;
(6), CRC check passes through, with the Data Receiving district of data storing to the corresponding stored district, SCIB_FLAG equals 1 according to SCIB_AD; CRC check is not passed through, and empties all and receives data, waits for next information frame;
(7), EOI;
(5), SCIB_FLAG equals 1, the data that SCIB_AD corresponding stored district data transmission interval is pointed to send through the SCIB mouth; The data in Data Receiving district send to other digital signal processors through the SPI mouth, make the data of each digital signal processor stored identical, and the SCIB_FLAG that resets makes SCIB_FLAG=0; SCIB_FLAG is not equal to 1, jumps to the CAN mouth;
(6), judge whether CAN_FLAG equals 1; Concrete determining step is following:
(1), CAN interrupts inlet;
(2), the address in the reading of data and being kept among the CAN_AD;
(3), receive data;
(4), judge whether receive data length equals information frame data indicating length;
(5), receive data length and equal information frame data indicating length, judge whether CRC check is passed through; Receive data length and be not equal to information frame data indicating length, EOI;
(6), CRC check passes through, with the Data Receiving district of data storing to the corresponding stored district, CAN_FLAG equals 1 according to CAN_AD; CRC check is not passed through, and empties all and receives data, waits for next information frame;
(7), EOI;
(7), CAN_FLAG equals 1, the data that CAN_AD corresponding stored district data transmission interval is pointed to send through the CAN mouth; The data in Data Receiving district send to other digital signal processors through the SPI mouth, make the data of each digital signal processor stored identical, and the CAN_FLAG that resets makes CAN_FLAG=0; Return step (two) then; CAN_FLAG is not equal to 1, returns step (two).
The communication means of wind power generating set of the present invention compared with prior art has the following advantages:
The data that each equipment will be uploaded are put into the data segment of information frame, send to digital signal processor according to the form of information frame through RS-485 or CAN mouth.Digital signal processor judges through interrupting information whether SCIA mouth, SCIB mouth or CAN mouth have peripheral hardware to connect and the realization data communication.In digital signal processor gets into, have no progeny, receive the address code of information frame through judgement, the type of automatic identification equipment, promptly discerning through address code is which equipment in electric machine controller, master controller, inverter, supervisory system and the man-machine interface.When the data length that receives equals the length of frame length section correspondence in the information frame, carry out CRC check.If data are through verification,, and this part data is defeated by the another one digital signal processor through the SPI oral instructions with the data storage area of the deposit data in the data segment to corresponding device.After digital signal processor is accomplished Data Receiving; Digital signal processor can read the corresponding data in Data Receiving district of other equipment through the pointer of this device data sending area; And these data are put into the data segments of information frame, send to equipment according to the form of information frame, therefore; The communication means of wind power generating set of the present invention can provide the pathway for electrical signals that exclusively enjoys for each communication terminal, and making between each equipment can be fast, stable and transmit data safely.
Description of drawings
Fig. 1 is the communicator of wind power generating set of the present invention and the circuit theory diagrams of communication means thereof.
Fig. 2 is the structural representation of digital signal processor of communicator and the communication means thereof of wind power generating set of the present invention.
Fig. 3 is the process flow diagram of the communication means of wind power generating set of the present invention.
Fig. 4 is whether the SCIA_FLAG that judges of the communication means of wind power generating set of the present invention equals 1 process flow diagram.
Fig. 5 is whether the SCIB_FLAG that judges of the communication means of wind power generating set of the present invention equals 1 process flow diagram.
Fig. 6 is whether the CAN_FLAG that judges of the communication means of wind power generating set of the present invention equals 1 process flow diagram.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further.
See also illustrated in figures 1 and 2; The communicator of wind power generating set of the present invention comprises at least one digital signal processor; Each digital signal processor all be connected with at least one can be with engine controller or/and master controller or/and inverter or/and supervisory system or/and the isolating converter that man-machine interface is connected, communication connects between two digital signal processors.Each digital signal processor all is connected with CAN port communications driving circuit, and described CAN port communications driving circuit is connected with the CAN mouth of digital signal processor.Each digital signal processor is provided with engine controller region of data storage, master controller region of data storage, inverter region of data storage, supervisory system region of data storage and man-machine interface region of data storage.Each region of data storage includes Data Receiving district and data transmission interval, and each data transmission interval has all been deposited pointer.The address of variable of all digital signal processors is all identical.Adopt SPI communication to connect between two digital signal processors.Described isolating converter is the RS-485 isolating converter.
In this specific embodiment, described digital signal processor is two, is digital signal processor I and digital signal processor II.Each digital signal processor all is connected with two isolating converters, is isolating converter I, isolating converter II, isolating converter III, isolating converter IV.Two isolating converters are connected with the SCIB mouth with the SCIA mouth of corresponding digital signal processor respectively; The SCIA mouth of isolating converter I linking number word signal processor I; The SCIB mouth of isolating converter II linking number word signal processor I; The SCIA mouth of isolating converter III linking number word signal processor II, the SCIB mouth of isolating converter IV linking number word signal processor II.Described CAN port communications drives and comprises that the CAN port communications drives I and the CAN port communications drives II, and described CAN port communications drives I and is connected with the digital signal processor I, and described CAN port communications drives II and is connected with the digital signal processor II.
See also Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, the communication means of wind power generating set may further comprise the steps:
The Data Receiving district of each storage area is used to preserve the data that corresponding device sends to digital signal processor; Some variable in the Data Receiving district of other equipment of pointed that the data transmission interval of each storage area is deposited, the variables set of all pointed of the data transmission interval of each storage area is combined into the data that digital signal processor sends to corresponding device.
If variable SCIA_FLAG, SCIB_FLAG, CAN_FLAG are respectively applied for the success of whether communicating by letter of mark SCIA mouth, SCIB mouth, CAN mouth; SCIA_AD, SCIB_AD, CAN_AD are respectively applied for the address that mark SCIA mouth, SCIB mouth, CAN mouth receive information frame, and these addresses have represented that information frame belongs to the equipment in engine controller, master controller, inverter, supervisory system and the man-machine interface.
(1), program begins;
(2), judge whether SCIA_FLAG equals 1; Concrete determining step is following:
(1), SCIA interrupts inlet;
(2), the address in the reading of data and being kept among the SCIA_AD;
(3), receive data;
(4), judge whether receive data length equals information frame data indicating length;
(5), receive data length and equal information frame data indicating length, judge whether CRC check is passed through; Receive data length and be not equal to information frame data indicating length, EOI;
(6), CRC check passes through, with the Data Receiving district of data storing to the corresponding stored district, SCIA_FLAG equals 1 according to SCIA_AD; CRC check is not passed through, and empties all and receives data, waits for next information frame;
(7), EOI;
(3), SCIA_FLAG equals 1, the data that SCIA_AD corresponding stored district data transmission interval is pointed to send through the SCIA mouth; The data in Data Receiving district send to other digital signal processors through the SPI mouth, make the data of each digital signal processor stored identical, and the SCIA_FLAG that resets makes SCIA_FLAG=0; SCIA_FLAG is not equal to 1, jumps to the SCIB mouth;
(4), judge whether SCIB_FLAG equals 1; Concrete determining step is following:
(1), SCIB interrupts inlet;
(2), the address in the reading of data and being kept among the SCIB_AD;
(3), receive data;
(4), judge whether receive data length equals information frame data indicating length;
(5), receive data length and equal information frame data indicating length, judge whether CRC check is passed through; Receive data length and be not equal to information frame data indicating length, EOI;
(6), CRC check passes through, with the Data Receiving district of data storing to the corresponding stored district, SCIB_FLAG equals 1 according to SCIB_AD; CRC check is not passed through, and empties all and receives data, waits for next information frame;
(7), EOI;
(5), SCIB_FLAG equals 1, the data that SCIB_AD corresponding stored district data transmission interval is pointed to send through the SCIB mouth; The data in Data Receiving district send to other digital signal processors through the SPI mouth, make the data of each digital signal processor stored identical, and the SCIB_FLAG that resets makes SCIB_FLAG=0; SCIB_FLAG is not equal to 1, jumps to the CAN mouth;
(6), judge whether CAN_FLAG equals 1; Concrete determining step is following:
(1), CAN interrupts inlet;
(2), the address in the reading of data and being kept among the CAN_AD;
(3), receive data;
(4), judge whether receive data length equals information frame data indicating length;
(5), receive data length and equal information frame data indicating length, judge whether CRC check is passed through; Receive data length and be not equal to information frame data indicating length, EOI;
(6), CRC check passes through, with the Data Receiving district of data storing to the corresponding stored district, CAN_FLAG equals 1 according to CAN_AD; CRC check is not passed through, and empties all and receives data, waits for next information frame;
(7), EOI;
(7), CAN_FLAG equals 1, the data that CAN_AD corresponding stored district data transmission interval is pointed to send through the CAN mouth; The data in Data Receiving district send to other digital signal processors through the SPI mouth, make the data of each digital signal processor stored identical, and the CAN_FLAG that resets makes CAN_FLAG=0, return step (two) then; CAN_FLAG is not equal to 1, returns step (two).
Claims (5)
1. the communicator of a wind power generating set; It is characterized in that: comprise at least one digital signal processor; Each digital signal processor all be connected with at least one can be with engine controller or/and master controller or/and inverter or/and supervisory system or/and the isolating converter that man-machine interface is connected, communication connects between two digital signal processors; Each digital signal processor all is connected with CAN port communications driving circuit, and described CAN port communications driving circuit is connected with the CAN mouth of digital signal processor; Each digital signal processor is provided with engine controller region of data storage, master controller region of data storage, inverter region of data storage, supervisory system region of data storage and man-machine interface region of data storage; Each region of data storage includes Data Receiving district and data transmission interval, and each data transmission interval has all been deposited pointer; The address of variable of all digital signal processors is all identical.
2. the communicator of wind power generating set according to claim 1 is characterized in that: adopt SPI communication to connect between two digital signal processors.
3. the communicator of wind power generating set according to claim 2; It is characterized in that: described digital signal processor is two; Each digital signal processor all is connected with two isolating converters, and two isolating converters are connected with the SCIB mouth with the SCIA mouth of corresponding digital signal processor respectively.
4. the communicator of wind power generating set according to claim 3, it is characterized in that: described isolating converter is the RS-485 isolating converter.
5. the communication means of a wind power generating set may further comprise the steps:
The Data Receiving district of each storage area is used to preserve the data that corresponding device sends to digital signal processor; Some variable in the Data Receiving district of other equipment of pointed that the data transmission interval of each storage area is deposited, the variables set of all pointed of the data transmission interval of each storage area is combined into the data that digital signal processor sends to corresponding device;
If variable SCIA_FLAG, SCIB_FLAG, CAN_FLAG are respectively applied for the success of whether communicating by letter of mark SCIA mouth, SCIB mouth, CAN mouth; SCIA_AD, SCIB_AD, CAN_AD are respectively applied for the address that mark SCIA mouth, SCIB mouth, CAN mouth receive information frame, and these addresses have represented that information frame belongs to the equipment in engine controller, master controller, inverter, supervisory system and the man-machine interface;
(1), program begins;
(2), judge whether SCIA_FLAG equals 1; Concrete determining step is following:
(1), SCIA interrupts inlet;
(2), the address in the reading of data and being kept among the SCIA_AD;
(3), receive data;
(4), judge whether receive data length equals information frame data indicating length;
(5), receive data length and equal information frame data indicating length, judge whether CRC check is passed through; Receive data length and be not equal to information frame data indicating length, EOI;
(6), CRC check passes through, with the Data Receiving district of data storing to the corresponding stored district, SCIA_FLAG equals 1 according to SCIA_AD; CRC check is not passed through, and empties all and receives data, waits for next information frame;
(7), EOI;
(3), SCIA_FLAG equals 1, the data that SCIA_AD corresponding stored district data transmission interval is pointed to send through the SCIA mouth; The data in Data Receiving district send to other digital signal processors through the SPI mouth, make the data of each digital signal processor stored identical, and the SCIA_FLAG that resets makes SCIA_FLAG=0; SCIA_FLAG is not equal to 1, jumps to the SCIB mouth;
(4), judge whether SCIB_FLAG equals 1; Concrete determining step is following:
(1), SCIB interrupts inlet;
(2), the address in the reading of data and being kept among the SCIB_AD;
(3), receive data;
(4), judge whether receive data length equals information frame data indicating length;
(5), receive data length and equal information frame data indicating length, judge whether CRC check is passed through; Receive data length and be not equal to information frame data indicating length, EOI;
(6), CRC check passes through, with the Data Receiving district of data storing to the corresponding stored district, SCIB_FLAG equals 1 according to SCIB_AD; CRC check is not passed through, and empties all and receives data, waits for next information frame;
(7), EOI;
(5), SCIB_FLAG equals 1, the data that SCIB_AD corresponding stored district data transmission interval is pointed to send through the SCIB mouth; The data in Data Receiving district send to other digital signal processors through the SPI mouth, make the data of each digital signal processor stored identical, and the SCIB_FLAG that resets makes SCIB_FLAG=0; SCIB_FLAG is not equal to 1, jumps to the CAN mouth;
(6), judge whether CAN_FLAG equals 1; Concrete determining step is following:
(1), CAN interrupts inlet;
(2), the address in the reading of data and being kept among the CAN_AD;
(3), receive data;
(4), judge whether receive data length equals information frame data indicating length;
(5), receive data length and equal information frame data indicating length, judge whether CRC check is passed through; Receive data length and be not equal to information frame data indicating length, EOI;
(6), CRC check passes through, with the Data Receiving district of data storing to the corresponding stored district, CAN_FLAG equals 1 according to CAN_AD; CRC check is not passed through, and empties all and receives data, waits for next information frame;
(7), EOI;
(7), CAN_FLAG equals 1, the data that CAN_AD corresponding stored district data transmission interval is pointed to send through the CAN mouth; The data in Data Receiving district send to other digital signal processors through the SPI mouth, make the identical CAN_FLAG of resetting of data of each digital signal processor stored, make CAN_FLAG=0; Return step (two) then; CAN_FLAG is not equal to 1, returns step (two).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104494223A CN102566538B (en) | 2011-12-29 | 2011-12-29 | Communication method for wind generating set |
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| CN2011104494223A CN102566538B (en) | 2011-12-29 | 2011-12-29 | Communication method for wind generating set |
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| CN2679388Y (en) * | 2003-12-29 | 2005-02-16 | 中国科学院电工研究所 | Controller of wind-driven generator |
| CN201294481Y (en) * | 2008-10-24 | 2009-08-19 | 上海输配电股份有限公司 | Converter for dual-feedback wind generating set |
| US20100264739A1 (en) * | 2009-04-15 | 2010-10-21 | Monte Errington | Modular adaptive power matrix |
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