CN203350669U

CN203350669U - Photovoltaic inverter-used man-machine interaction hardware circuit

Info

Publication number: CN203350669U
Application number: CN 201320462521
Authority: CN
Inventors: 戴伟; 陈芳; 牟长洲; 李科
Original assignee: XINJIANG HOPE ELECTRONIC CO Ltd
Current assignee: XINJIANG HOPE ELECTRONIC CO Ltd
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2013-12-18
Anticipated expiration: 2023-07-31

Abstract

The utility model discloses a photovoltaic inverter-used man-machine interaction hardware circuit. The photovoltaic inverter-used man-machine interaction hardware circuit comprises a master controller, a slave controller which is connected with the main controller through SPI data bus ports and chip selection signal ports, and a keyboard module which is connected with the main controller through GPIP ports. With the photovoltaic inverter-used man-machine interaction hardware circuit of the utility model adopted, defects of inconvenient monitoring, low reliability and poor stability in the prior art can be eliminated. The photovoltaic inverter-used man-machine interaction hardware circuit is advantageous in convenient monitoring, high reliability and high stability.

Description

Man-machine interface hardware circuit for a kind of photovoltaic DC-to-AC converter

Technical field

The utility model relates to the photovoltaic power generation technology field, particularly, relates to man-machine interface hardware circuit for a kind of photovoltaic DC-to-AC converter.

Background technology

Photovoltaic DC-to-AC converter is that the DC current that solar panel is produced is converted into alternating current, and electric current is sent to a kind of equipment of electrical network.In the course of the work, in order to ensure the trouble free service of photovoltaic DC-to-AC converter, need to show in real time operational factor, the running status of inverter, the content of demonstration mainly comprises the systematic parameter such as current power, cell plate voltage, cell panel electric current, line voltage, power network current, mains frequency, output power and electric meter address, the machine ID, date, running status etc.Simultaneously, for ease of host computer, to monitoring of tools, also need inverter is carried out the setting of some necessity, function is set and comprises that electric meter address setting, the machine ID setting, date arrange etc.

Therefore, the human-computer interaction function of photovoltaic DC-to-AC converter is of crucial importance, can guarantee the monitoring to each inverter of the normal operation of inverter and host computer; For stability and the reliability that strengthens whole photovoltaic generating system, effectively man-machine interaction is essential.

In realizing process of the present utility model, the inventor finds in prior art at least to exist that monitoring is inconvenient, reliability is low and the defect such as poor stability.

The utility model content

The purpose of this utility model is, for the problems referred to above, proposes man-machine interface hardware circuit for a kind of photovoltaic DC-to-AC converter, to realize that monitoring is convenient, reliability is high and the advantage of good stability.

For achieving the above object, the technical solution adopted in the utility model is: man-machine interface hardware circuit for a kind of photovoltaic DC-to-AC converter, comprise master controller, by SPI data bus port, with the chip selection signal port, with described master controller, be connected from controller, and the Keysheet module be connected with described master controller by the GPIP port.

Further, described master controller, comprise dsp controller.

Further, the model of described dsp controller is F2812.

Further, described from controller, comprise the LCD MODULE, ferroelectric memory and the clock module that are connected with described master controller by SPISOMI data line, SPISIMO data line and SPICLOCK data line in spi bus respectively.

Further, the model of described LCD MODULE is FYD12864.

Further, the model of described ferroelectric memory is FM25L04.

Further, described clock module, be specially real-time timepiece chip PCF2129.

Further, the model of described Keysheet module is KTEKD80KP.

Man-machine interface hardware circuit for the photovoltaic DC-to-AC converter of each embodiment of the utility model, owing to comprising master controller, by SPI data bus port, with the chip selection signal port, with master controller, be connected from controller, and the Keysheet module be connected with described master controller by the GPIP port; Can overcome in prior art that monitoring is inconvenient, reliability is low and the defect of poor stability, to realize that monitoring is convenient, reliability is high and the advantage of good stability.

Other features and advantages of the utility model will be set forth in the following description, and, partly from instructions, become apparent, or understand by implementing the utility model.

Below by drawings and Examples, the technical solution of the utility model is described in further detail.

The accompanying drawing explanation

Accompanying drawing is used to provide further understanding of the present utility model, and forms the part of instructions, with embodiment mono-of the present utility model, is used from explanation the utility model, does not form restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the principle of work schematic diagram of the utility model photovoltaic DC-to-AC converter with man-machine interface hardware circuit.

Embodiment

Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.

According to the utility model embodiment, as shown in Figure 1, man-machine interface hardware circuit for a kind of photovoltaic DC-to-AC converter is provided, comprise master controller, by SPI data bus port, with the chip selection signal port, with master controller, be connected from controller, and the Keysheet module be connected with master controller by the GPIP port.The model of Keysheet module is KTEKD80KP.

Wherein, above-mentioned master controller, comprise dsp controller; The model of dsp controller is F2812.

Above-mentioned from controller, comprise the LCD MODULE, ferroelectric memory and the clock module that are connected with master controller by SPISOMI data line, SPISIMO data line and SPICLOCK data line in spi bus respectively.The model of LCD MODULE is FYD12864, and the model of ferroelectric memory is FM25L04, and clock module is specially real-time timepiece chip PCF2129.

Man-machine interface hardware circuit for the photovoltaic DC-to-AC converter of above-described embodiment, be connected with dsp controller (selecting the F2812 of TI company) at LCD MODULE, memory module (as ferroelectric memory), clock chip, adopts spi bus to be connected.Spi bus completes a serial communication, needs two controllers: i.e. master controller and from controller, master controller sends the SPICLOK signal and carrys out the log-on data transmission.For master controller with from controller, data are all to shift out shift register at an edge of SPICLOK signal, at another edge, are latched into shift register, have realized transmitting and receive data between two controllers simultaneously.In the demonstration of photovoltaic DC-to-AC converter and function being set, the SPI interfaces is in main mode of operation, dsp controller (as F2812 DSP) is master controller, and memory module (as FM25L04), LCD MODULE (as FYD12864), clock module (can select the real-time timepiece chip PCF2129 of NXP company) are from controller.Photovoltaic DC-to-AC converter function is set, with Keysheet module (can select the Keysheet module KTEKD80KP of Shenzhen Jian Te Electronics Co., Ltd.), three GPIO(universal input/outputs of use dsp controller) pin is connected with Keysheet module, by default, three of Keysheet module GPIO pins are all high level.

Spi bus comprises: SPICLOCK, SPISIMO and SPISOMI tri-data lines.Wherein the SPICLOK signal is clock signal, and each spi bus peripheral module all needs this clock benchmark.Photovoltaic DC-to-AC converter, when carrying out Presentation Function, needs dsp controller to pass through SPISIMO data line write command to liquid crystal chip (being LCD MODULE), and in demonstration, a part of content reads from ferroelectric memory or calendar clock by the SPISOMI data line.When photovoltaic DC-to-AC converter arranges function in execution, need to the content that will arrange, be arranged by Keysheet module, the content that will arrange after setting completes is kept in ferroelectric memory or calendar clock, now by SPISIMO and SPISOMI data line, transmits and receive data simultaneously.By the strobe pin of software control Liquid Crystal Module, ferroelectric memory, three SPI external components of calendar clock, make and only have at most at any time a spi bus external device gating.So just guaranteed that the data on the spi bus can accurately be sent on the peripheral hardware chip that will use.

In sum, man-machine interface hardware circuit for the photovoltaic DC-to-AC converter of the utility model above-described embodiment at least can reach following beneficial effect:

(1) by the spi bus of dsp controller, each external components is connected, has realized that photovoltaic DC-to-AC converter shows and arrange the hardware design of function, adopt the main control chip of ARM chip as man-machine interaction more in the past in the design, this design is simpler, economy;

(2) the power down hold function that adopts in addition ferroelectric memory FM25L04 to have, after photovoltaic DC-to-AC converter restarts, the content of system setting can not lost, and has guaranteed the monitoring to each inverter of the normal operation of inverter and host computer, has strengthened stability and the reliability of whole system;

(3) again, the demonstration of photovoltaic DC-to-AC converter and changing value refreshing frequency in function is set, the more full frame display mode refreshed of LCD MODULE, more attractive in appearance; Dsp controller/Basic Input or Output System (BIOS) (Basic Input Output System, be called for short BIOS) in, the utilization of the communication of demonstration and setting, host computer, a plurality of TSK tasks such as calculating of generated energy, make the application of DSP in the software programming design more flexibly, conveniently.BIOS, it is one group of program be cured in computing machine on mainboard on a rom chip, self-check program and system self-triggered program after the program of the most important basic input and output of its in store computing machine, system configuration information, start, its major function provides the bottom, the most direct hardware setting and control for computing machine.

Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although with reference to previous embodiment, the utility model is had been described in detail, for a person skilled in the art, its technical scheme that still can put down in writing aforementioned each embodiment is modified, or part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. a man-machine interface hardware circuit for photovoltaic DC-to-AC converter, it is characterized in that, comprise master controller, by SPI data bus port, with the chip selection signal port, with described master controller, be connected from controller, and the Keysheet module be connected with described master controller by the GPIP port.

2. man-machine interface hardware circuit for photovoltaic DC-to-AC converter according to claim 1, is characterized in that, described master controller, comprise dsp controller.

3. man-machine interface hardware circuit for photovoltaic DC-to-AC converter according to claim 2, is characterized in that, the model of described dsp controller is F2812.

4. according to man-machine interface hardware circuit for the described photovoltaic DC-to-AC converter of any one in claim 1-3, it is characterized in that, described from controller, comprise the LCD MODULE, ferroelectric memory and the clock module that are connected with described master controller by SPISOMI data line, SPISIMO data line and SPICLOCK data line in spi bus respectively.

5. man-machine interface hardware circuit for photovoltaic DC-to-AC converter according to claim 4, is characterized in that, the model of described LCD MODULE is FYD12864.

6. man-machine interface hardware circuit for photovoltaic DC-to-AC converter according to claim 4, is characterized in that, the model of described ferroelectric memory is FM25L04.

7. man-machine interface hardware circuit for photovoltaic DC-to-AC converter according to claim 4, is characterized in that described clock module is specially real-time timepiece chip PCF2129.

8. according to man-machine interface hardware circuit for the described photovoltaic DC-to-AC converter of any one in claim 1-3, it is characterized in that, the model of described Keysheet module is KTEKD80KP.