CN202257569U

CN202257569U - Embedded-type man-machine interaction device based on ARM (Advanced Reduced Instruction Set Computer Machine) core

Info

Publication number: CN202257569U
Application number: CN2011203700924U
Authority: CN
Inventors: 张志峰; 黄小大; 万旭; 罗虎
Original assignee: HNAC Technology Co Ltd
Current assignee: HNAC Technology Co Ltd
Priority date: 2011-09-30
Filing date: 2011-09-30
Publication date: 2012-05-30
Anticipated expiration: 2021-09-30

Abstract

The utility model discloses an embedded-type man-machine interaction device based on ARM (Advanced Reduced Instruction Set Computer Machine) core, which comprises an ARM core processing submodule, a drive submodule, a display submodule and a keyboard operation submodule, wherein the ARM core processing submodule adopts a 200MHz high-performance CPU of an ARM920T microprocessor core, is loaded with Linux operating system, provides 2 fast Ethernet interfaces, an LCD (liquid crystal display) interface with image acceleration, an SPI (serial peripheral interface), a USB 2.0, a UART (universal asynchronous receiver/transmitter) and a CAN (controller area network) interface, and expands 64Mbit Flash and 64Mbit SDRAM (synchronous dynamic random access memory) memory units. The device disclosed by the utility model has strong data management function, can implement storage of large event information data bulk in industrial application, and performs IEC61850 and various other complex protocol conversion and foreign communication processing functions.

Description

Built-in human-machine interaction device based on the ARM kernel

Technical field

The utility model relates to a kind of power automation monitoring and protecting device, particularly a kind of built-in human-machine interaction device based on the ARM kernel.

Background technology

The present following problem of power automation monitoring and protecting device ubiquity:

(1) internal processes space, the limited storage space of protective relaying device can not be tackled fairly large and complex data is handled, like IEC61850 protocol conversion, graphic interface programming;

(2) perhaps do not have only one road Ethernet interface, can not satisfy on-the-spot communication networking requirement;

(3) man-machine interface is dull, and complicated operation is unfavorable for that the onsite user uses;

(4) debugging of internal processes module, renewal complicacy are unfavorable for the integrated exploitation of new product.

The utility model content

The utility model technical matters to be solved is; Not enough to prior art; A kind of built-in human-machine interaction device based on the ARM kernel is provided, multiple external communication interface is provided, satisfy the communication data of existing power automation monitoring and protecting device and handle and the flexible networking requirement; Improve man-machine interface, realize clear, directly perceived, easy man-machine interaction; Loading Linux operating system is made the software platform of modularization exploitation.

For solving the problems of the technologies described above; The technical scheme that the utility model adopted is: a kind of built-in human-machine interaction device based on the ARM kernel; Comprise ARM core processing module, driver module, display module and keyboard operation module; The ARM core processing module comprises CPU, built-in function expansion interface, to external signal interactive interface and built-in function signal reservations interface, the built-in function expansion interface, external signal interactive interface, built-in function signal reservations interface are connected with CPU is two-way respectively; Said the external signal interactive interface is comprised CAN communication interface, serial port, keyboard interface, display interface, 2 road Ethernet interfaces, wherein one road Ethernet interface is formed through the dedicated ethernet expansion by CPU; Said built-in function expansion interface comprises Flash storer and the SDRAM storer that system's real-time clock, CPU expand through general-purpose storage; Driver module be connected the external signal interactive interface is two-way, keyboard operation module, the display module driving interface through driver module with the external signal interactive interface is connected.

Said core processing module CPU has adopted the high-end product EP9315 in the EP93XX series of Cirrus Logic company, embedded advanced person's the ARM920T micro-processor kernel that runs on 200MHz.The CPU core WV is 1.8V, and the input voltage of said module is 5V.The inner integrated high performance 1/10/100Mbps Ethernet MAC controller (MAC) of CPU, through simply being connected with the external PHY (physical layer interface) that supports the MII interface, system can realize high-performance, hang down the Internet access function of expense.Said core processing module carries at CPU has expanded one road Ethernet interface again outside the MAC, realized the Dual-Ethernet functional interface.

Said core processing module has been expanded 64MbitFlash and 64MbitSDRAM through CPU general purpose memory interface (SDRAM, SRAM, ROM and Flash).The Flash storer is used to deposit user application, built-in Linux operating system and other user data that needs are preserved after system's power down etc.The SDRAM storer is the running space of system program, and system and user data, storehouse all are arranged in the SDRAM storer.

Core processing module carries real-time clock, adopts the BQ3285 chip, is connected with CPU through 8 bit address/data multiplex bus.

Core processing module carries three road UART interfaces, and wherein UART1 is used for the serial communication with upper PC, realizes exploitation, debugging to operating system through serial ports.Original state in system, EEPROM and Flash storer are sky, and it is that 16 bit serial start that the system start-up configuration mode need be set this moment, to write setup code among the Flash.Two-way UART interface uses as general communication or printing interface in addition.

Core processing module has been expanded 1 road CAN communication interface through the SJA1000 chip, and compatible CAN2.0B agreement can be used for the CANBus communication of industry spot, perhaps as the internal communication bus of device.

Core processing module provides a display interface that band 2D figure quickens function, supports RGB24 position pixel to show, supports sequential and the interface signal of digital LCD and TFT.

Said display module adopts TFT320 * 240 color liquid crystals, is connected with core processing module through driving interface.Through reset in the display module external interface, sheet choosing, clock, serial input signals line; Can realize the serial initialization of LCD controller; Regulate gray-scale displayed and contrast etc.; The display module man-machine interface designs based on the uGUI graphical interfaces base library of independent research, supports graphical and configuration shows.

Said driver module provides 5V core processing module working power, and modulation LED-backlit power supply drives the external interface of core processing module simultaneously and transfers.

Said keyboard operation module is 3 * 3 matrix keyboards, the dither functions of taking.

The utility model provides multiple external communication interface, can satisfy the communication data of existing power automation monitoring and protecting device and handle and the flexible networking requirement; Improve man-machine interface, realized clear, directly perceived, easy man-machine interaction; Load (SuSE) Linux OS, made the software platform of modularization exploitation.

Description of drawings

Fig. 1 is the utility model one example structure block diagram;

Fig. 2 is the nucleus module circuit theory diagrams of the utility model; (1) the ethernet interface circuit schematic diagram that carries of CPU; (2) the ethernet interface circuit schematic diagram of CPU expansion; (3) system clock and CAN communicating circuit schematic diagram; (4) EP9315 major function port circuit schematic diagram.

Embodiment

As shown in Figure 1, comprise four sub-module based on the built-in human-machine interaction device of ARM kernel: core processing module 1, driver module 2, display module 3, keyboard operation module 4.

This instance core processing module structure comprises 4 major parts: CPU, built-in function expansion interface, to external signal interactive interface, built-in function signal reservations interface.

Core processing module CPU has adopted the EP9315 chip of Cirrus Logic company, embedded advanced person's the ARM920T micro-processor kernel that runs on 200MHz.The CPU core WV is 1.8V, and input and output voltage is 3.3V.

The built-in function expansion interface of core processing module comprises resource expansion and the expansion of system clock function, makes module can satisfy the design requirement in the relay protection product.The resource expansion has been expanded 64MbitFlash and 64MbitSDRAM through general purpose memory interface.The Flash storer is used to deposit user application, built-in Linux operating system and other user data that needs are preserved after system's power down etc.The SDRAM storer is the running space of system program, and system and user data, storehouse all are arranged in the SDRAM storer.System's real-time clock (RTC) adopts the BQ3285 chip, guarantees the timing under the power-down state.

Core processing module the external signal interactive interface is comprised: 1 road CAN, 2 road Ethernets, 3 serial ports, keyboard interface, 1 LCD interface, can satisfy the requirement of various power consumers such as electrical network, factories and miness to the power automation monitoring and protecting device.Example module has been expanded 1 road CAN communication interface based on the SJA1000 chip; Example module is realized the expansion of NET1 network interface based on the integrated Ethernet MAC controller (MAC) in CPU inside, expands the NET2 network interface through the dedicated ethernet chip simultaneously; Example module is connected to driver module with 3 serial ports, keyboard matrix, the LCD signal of CPU through the electric signal driving.

Core processing module also is connected to corresponding terminal as spare interface with signals such as the touch-screen of CPU, DMA, USB except the interface that routine is used, make things convenient for the function expansion of nucleus module.

This instance driver module provides 5V core processing module working power, and modulation display module LED-backlit power supply drives the external interface of core processing module simultaneously and transfers.The AP3008 chip is adopted in the modulation of LED-backlit power supply; UART1 is the RS232 mouth, after MAX232ESE chip switching levels with the serial communication of upper PC, debug port as an example; UART2, UART3 are optional mouthful of RS232/RS485, and as external communication port, the RS485 interface chip adopts SN65HVD3082EP; CAN externally communication after photoelectricity is isolated with PCA82C250 interface chip switching levels; NET1, NET2 are interconnected through isolating transformer and external network.

This instance keyboard operation module is 3 * 3 matrix keyboards, the dither functions of taking.Button comprises: upper and lower, left and right, add, subtract, return, reset, confirm, can realize the man-machine interface operational requirements of industry spot.

This instance displaying block adopts TFT320 * 240 color liquid crystals, is connected with core processing module through the driver module interface.Through reset in the display module external interface, sheet choosing, clock, serial input signals line, can realize the serial initialization of LCD controller, regulate gray-scale displayed and contrast etc.

Claims

1. built-in human-machine interaction device based on the ARM kernel; Comprise ARM core processing module, driver module, display module and keyboard operation module; It is characterized in that; The ARM core processing module comprises CPU, built-in function expansion interface, to external signal interactive interface and built-in function signal reservations interface, the built-in function expansion interface, external signal interactive interface, built-in function signal reservations interface are connected with CPU is two-way respectively; Said the external signal interactive interface is comprised CAN communication interface, serial port, keyboard interface, display interface, two-way Ethernet interface, wherein one road Ethernet interface is formed through the dedicated ethernet expansion by CPU; Said built-in function expansion interface comprises Flash storer and the SDRAM storer that system's real-time clock, CPU expand through general-purpose storage; Driver module be connected the external signal interactive interface is two-way, keyboard operation module, the display module driving interface through driver module with the external signal interactive interface is connected.

2. the built-in human-machine interaction device based on the ARM kernel according to claim 1 is characterized in that, said CPU adopts the EP9315 chip.

3. the built-in human-machine interaction device based on the ARM kernel according to claim 1 is characterized in that, said system's real-time clock adopts the BQ3285 chip.

4. the built-in human-machine interaction device based on the ARM kernel according to claim 1 is characterized in that, said CAN communication interface is formed through the expansion of SJA1000 chip by CPU.

5. the built-in human-machine interaction device based on the ARM kernel according to claim 1 is characterized in that, said built-in function signal reservations interface comprises CPU touch screen interface, DMA interface and USB interface.

6. the built-in human-machine interaction device based on the ARM kernel according to claim 1 is characterized in that, said display module adopts TFT320 * 240 color liquid crystals.

7. the built-in human-machine interaction device based on the ARM kernel according to claim 1 is characterized in that said keyboard operation module is 3 * 3 matrix keyboards.