Summary of the invention
It is an object of the invention to, overcome deficiency of the prior art, it is provided that a kind of employing FPGA analog switch chipIntelligent ring network case become measure and control device, can quickly realize intelligent monitoring, telecommunication management, case can be realized and uprise the simulation of low-pressure sideAmount collection, non-ionizing energy loss, distant place control, communication and ring exchanger function.
The present invention adopts the following technical scheme that a kind of Intelligent ring network case using FPGA analog switch chip becomes observing and controlling dressPut, it is characterised in that include that CPU management, communication cpu, CAN, PNL liquid crystal panel, remote server, the Big Dipper/GPS is eventuallyEnd, described CPU management electrically connects with described PNL liquid crystal panel, the described Big Dipper/GPS terminal, described CAN respectively, described pipeReason CPU is connected with described communication cpu by internal Ethernet, described CPU management pass through some Ethernets and described remotelyServer is connected, described CAN is the most external open into power insert, input and output module, resistance temperature detector open intoOutput module, AC input and output plug-in unit, described communication cpu external 10 road main website RS485 series wiring terminals, 2 road optical fiber respectivelyEthernet, 2 road SFP, ZigBee module.
Preferably, communication cpu includes MPC8247 chip, XC7A35T type FPGA, MPC8247 chip and XC7A35T typeFPGA electrically connects, and ZigBee module is electrically connected by I2C or UART or SPI with XC7A35T type FPGA, 10 road main websitesRS485 series wiring terminal electrically connects with XC7A35T type FPGA, and 2 road SFP are by exchanger chip and XC7A35T type FPGA electricityConnect.
Preferably, be also arranged in series between 10 road main website RS485 series wiring terminals and XC7A35T type FPGA direct current everyFrom module MAX485.
Preferably, 2 road fiber optic Ethernets include 100M Ethernet interface, 10M Ethernet interface, and XC7A35T type FPGA passes throughRMII is sequentially connected in series DP83848 ethernet transceiver, 100M Ethernet interface external RJ45 interface, and MPC8247 chip is depended on by SNISecondary series connection DP83848 ethernet transceiver, 10M Ethernet interface external RJ45 interface.
Preferably, MPC8247 chip is sequentially connected in series outside DP83848 ethernet transceiver, 10M Ethernet interface also by SNIConnect the MMI module on bus terminal.
Preferably, MPC8247 chip by I2C respectively with DS3231 type RTC, TCN75AVUA digital temperature sensor electricityConnect.
The implication of the technical term related in the present invention:
UART, universal asynchronous receiving-transmitting transmitter (Universal Asynchronous Receiver/Transmitter),So-called UART, is a kind of asynchronous receiving-transmitting transmitter, is a part for computer hardware.Data is logical with parallel by serial communicationLetter catch cropping transmission conversion, becomes the chip of Serial output, is typically integrated in the link of other communication interfaces as parallel input.
I2C (Inter-Integrated Circuit) bus is that the twin wire serial developed by PHILIPS company is totalLine, is used for connecting microcontroller and ancillary equipment thereof.
GBIC (abbreviation of Gigabit Interface Converter), is that the kilomegabit signal of telecommunication is converted to optical signalInterface device.Can be that hot plug uses in GBIC design.GBIC is a kind of fungible product meeting international standard.UseThe kilomegabit switch of GBIC Interface design, owing to exchanging flexibly, commercially occupies the bigger market share.SFP(SmallForm-factor Pluggable) can simply be interpreted as the upgraded version of GBIC.
HMI is the abbreviation of Human Machine Interface, and " man-machine interface " is also named man machine interface.
RTD is the abbreviation of Resistance Temperature Detector, and the meaning is resistance temperature detector, is called for shortIt it is thermal resistance.Resistance temperature detector (RTD) is actually the wire that a Gent is different, and its resistance varies with temperature and changes,Generally RTD material includes copper, platinum, nickel and nickel iron alloy.RTD element can be a wire, it is also possible to is thin film, adoptsIt is coated in ceramic-like materials substrate by the method for plating or sputtering.
SNI (Serial Network Interface) serial network interface and MII interface (medium independence interface) classSeemingly.
RMII (Reduced Media Independent Interface) RMII, is IEEEIn 802.3u standard, the another kind in addition to MII interface realizes.
MMI has two kinds of meanings, and one is MMI i.e. multimedia interface；The MP3 that plugs into, VCD, DVD, game machine etc. can be extendedA kind of line.When being DTV popularization, jack connection top box and a kind of line of TV, also have other purposes.
CAN is the abbreviation (hereinafter referred to as CAN) of Controller Area Network, is the serial of ISO International standardizationCommunication protocol.
DS3231 is low cost, in high precision I2C real-time clock (RTC), has integrated temperature compensating crystal oscillator (TCXO) and crystal.
FPGA, i.e. (Field-Programmable Gate Array), i.e. field programmable gate array, than ASIC (speciallyWith integrated circuit) speed want slow.
RJ45 is 8 modular interfaces of standard.
SPI is the abbreviation of Serial Peripheral Interface (SPI) (Serial Peripheral Interface).SPI, is a kind of high speed, full duplex, the communication bus of synchronization, and on the pin of chip, only take up four lines, save the pin of chip.
The beneficial effect that the present invention is reached: the present invention uses dual processors design and plug and play technique, all of plug-in unitPlug design after employing, it is simple to modularized design, simultaneously on the basis of multifunction integrated design, have employed FPGA analog switchThe technology of chip, it is not necessary to the exchanger chip of specialty, can reduce on-the-spot photovoltaic march-past transformer measure control part furtherThe cost of conservation schemes, meet the trend of photovoltaic low cost, high reliability.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.Following example are only used for clearly illustrating the present inventionTechnical scheme, and can not limit the scope of the invention with this.
Fig. 1 is the systematic schematic diagram of the present invention.A kind of Intelligent ring network case using FPGA analog switch chip becomes observing and controllingDevice, it is characterised in that include that CPU management, communication cpu, CAN, PNL liquid crystal panel, remote server, the Big Dipper/GPS is eventuallyEnd, CPU management electrically connects with PNL liquid crystal panel, the Big Dipper/GPS terminal, CAN respectively, and CPU management is by internal EthernetBeing connected with communication cpu, CPU management is connected with remote server by some Ethernets, CAN is the most external open intoPower insert (DI+PWR), input and output module (DIO), resistance temperature detector input and output module (RID+DIO), AC open intoOutput plug-in unit (AC+DIO), communication cpu external 10 road main website RS485 series wiring terminals, 2 road fiber optic Ethernets, 2 tunnels respectivelySFP, ZigBee module.
Wherein, AC plug-in unit is responsible for gathering dual low voltage transformer low-pressure side voltage x current amount, and input and output module (DIO) is mainOffer open into and non electrical quantity tripping operation node, observing and controlling CPU mainly provide remote measurement, remote signalling, by control, distant arteries and veins function；Communication cpu is mainRealize the access of serial ports amount, stipulations conversion and ring exchanger function；Remote server includes long-range monitoring client, web browsingEnd, debugging end, be used for providing remotely monitoring, web browsing, debugging function；PNL liquid crystal panel is used for the parameter of display management CPU；The Big Dipper/GPS terminal is to CPU management input position information.
Fig. 2 is the structural principle schematic diagram of an embodiment of the communication cpu of the present invention.Communication cpu includes MPC8247 coreSheet, XC7A35T type FPGA, MPC8247 chip electrically connects with XC7A35T type FPGA, and ZigBee module passes through UART and XC7A35TType FPGA electrically connects, and 10 road main website RS485 series wiring terminals electrically connect with XC7A35T type FPGA, and 2 road SFP pass through switchChip electrically connects with XC7A35T type FPGA.
DC-isolation module also it has been arranged in series between 10 road main website RS485 series wiring terminals and XC7A35T type FPGAMAX485, is used for realizing case and uprises the non-ionizing energy loss of low-pressure side.
2 road fiber optic Ethernets include 100M Ethernet interface, 10M Ethernet interface, and XC7A35T type FPGA is gone here and there successively by RMIIConnection DP83848 ethernet transceiver, 100M Ethernet interface external RJ45 interface, MPC8247 chip is sequentially connected in series by SNIDP83848 ethernet transceiver, 10M Ethernet interface external RJ45 interface.
MPC8247 chip is sequentially connected in series DP83848 ethernet transceiver, 10M Ethernet interface external bus end also by SNIMMI module on son.MPC8247 chip is electrically connected with DS3231 type RTC, TCN75AVUA digital temperature sensor respectively by I2CConnect.
The operation principle of the present invention: the Intelligent ring network case of the present invention becomes the motherboard of measure and control device and is arranged on cabinet front portion, logicalCross AC input and output plug-in unit collection dual low voltage transformer low-pressure side voltage x current amount and be transferred to CPU management through CAN, managementCPU mono-aspect passes through the real-time display parameter data of PNL liquid crystal panel, shares data by internal Ethernet with communication cpu simultaneously,Realize the long-range monitoring of photovoltaic plant dual low voltage transformer, web browsing, debugging function by remote server, by north simultaneouslyBucket/GPS terminal monitors the positional information of different photovoltaic plant in real time；Communication cpu includes MPC8247 chip and XC7A35T typeFPGA, MPC8247 chip gathers the MMI module of bus terminal, RJ45 interface by 10M Ethernet interface, and MPC8247 chip gathersDS3231 type RTC and the temperature information of built-in TCN75AVUA digital temperature sensor, XC7A35T type FPGA gathers 10 tunnelsThe ZigBee module letter of each march-past transformator in the rs 232 serial interface signal of main website RS485 series wiring terminal and photovoltaic plantBreath, it is achieved XC7A35T type FPGA replaces the function of exchanger chip, connects with the SFP that the kilomegabit signal of telecommunication is converted to optical signalMouthpart part directly sets up mapping relations.
10 road main website RS485 series wiring terminals can access the equipment such as inverter, header box, irradiation instrument, passes throughIEC60870-5-103 or IEC60870-5-104 communication protocol accesses the Power Station Monitored Control System of current main flow.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the artFor Yuan, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and deformation, these improve and deformationAlso should be regarded as protection scope of the present invention.