CN2777637Y

CN2777637Y - PC 104 embedded computer based on ARM microprocessor

Info

Publication number: CN2777637Y
Application number: CNU2005200501270U
Authority: CN
Inventors: 谭向杰
Original assignee: KERUIJIE ELECTROMECHANIC TECH Co Ltd
Current assignee: KERUIJIE ELECTROMECHANIC TECH Co Ltd
Priority date: 2005-01-21
Filing date: 2005-01-21
Publication date: 2006-05-03
Anticipated expiration: 2015-01-21

Abstract

The utility model relates to a PC104 embedded computer based on an ARM microprocessor, which is provided with a low power consumption ARM microprocessor 1 and a PC104 time schedule controller 20, wherein the ARM microprocessor 1 is connected with a power management device 2, a clock management and reset logic device 3, an SDRAM and FLASH memorizer 4, an LCD and CRT display control device 5, a standard serial port 6, an Ethernet interface 7, an infrared interface 8, a USB interface 9 and a CAN interface 10; the PC104 time schedule controller 20 is connected with a parallel interface expansion device 21, a PS2 keyboard and a mouse 22, and a PC104 expansion bus 23. The computer adds a PC104 bus extension device of the ARM microprocessor and does not use a cooling fin and a fan; the flexibility and the compatibility of an application system design can be enhanced, and the utility model with programmable characteristic can satisfy the requirements of various changes in the application process. The utility model has the advantages of power optimization, high reliability, high performance, low power consumption, low cost, small size, etc.

Description

A kind of PC104 embedded computer based on the ARM microprocessor

Technical field

The utility model relates to a kind of embedded computer, is meant that specifically a kind of low-power consumption ARM microprocessor that utilizes carries out the embedded computer that central calculation process and international standard PC104 bus are expanded.

Background technology

At present, the embedded computer of main flow all is based on the single board computer system of X 86 processor in the world, is mainly used in Industry Control, communication, security protection, consumer electronics etc. have close demand to high-performance treatments field.This embedded computer based on X 86 processor has two significantly deficiencies: one is that the X 86 processor power consumption is higher, generally speaking when processor speed surpasses 100MHZ, the central processing unit of embedded computer must finned or system is installed additional fan, certainly will cause whole embedded computer equipment on power consumption and volume, to increase like this, can not satisfy much the demand that volume and power consumption is had the application scenario of strict restriction; The 2nd, the cost of X 86 processor is higher, and under same performance condition, the cost performance of X 86 processor obviously is inferior to the ARM microprocessor.

Along with the appearance of low-power consumption ARM microprocessor and perfect, the ARM microprocessor is by a large amount of being applied in the embedded device, but because the ARM microprocessor can not direct compatible PC104 bus, up to the present also ARM microprocessor and the expansion of PC104 bus are not carried out successfully integrated application system appearance, make and lost the advantage that the PC104 bus is easy to expand based on the embedded system of ARM microprocessor at present, thereby make the range of application of this embedded system be subjected to bigger restriction.

The utility model content

The technical problems to be solved in the utility model is, deficiency at the prior art existence, a kind of PC104 embedded computer based on the ARM microprocessor is provided, it is in conjunction with ARM microprocessor high-performance, advantage of low power consumption, and PC104 international standard bus is easy to expand, compatible good advantage, optimize the performance of this class embedded computer, greatly expand the range of application of embedded computer.

Technical solution of the present utility model is that a kind of PC104 embedded computer based on the ARM microprocessor referring to Fig. 1, includes low-power consumption ARM microprocessor 1 and PC104 time schedule controller 20.Described low-power consumption ARM microprocessor 1 electricity respectively is connected to power management module 2, Clock management and reseting logic 3, SDRAM and FLASH storer 4, LCD and CRT demonstration control 5, standard serial port 6, Ethernet interface 7, infrared interface 8, USB interface 9 and CAN interface 10; Described PC104 time schedule controller 20 electricity respectively is connected to parallel interface expansion 21, PS2 keyboard and mouse 22 and PC104 expansion bus 23.Above-mentioned low-power consumption ARM microprocessor 1 and PC104 time schedule controller 20 electricity mutually connect.

Above-mentioned PC104 time schedule controller 20 is realized the PC104 sequential control by the programmable logic device (PLD) design, and the ARM microprocessor can be linked to each other with the PC104 bus and it be controlled.

Principle of work of the present utility model is, in view of above-mentioned power management module 2 has the low-power consumption feature, but the state of automatic monitoring system, when ARM microprocessor during for idle state, power management module enters the stand-by energy-saving pattern automatically.Above-mentioned SDRAM and FLASH storer 4 adopt the non-linear FLASH chip of Nand, and the non-volatile memory capacity of this device can be reached more than the 128M byte.Above-mentioned PC104 time schedule controller 20 has programmable functions, can redesign programmed logic.So can make the utility model utilize ARM microprocessor and PC104 bus advantage separately, realize the embedded computer system that constitutes by ARM microprocessor system and PC104 interface control two large divisions.Total system is a core with low-power consumption ARM microprocessor, and power management module, Clock management and reseting logic provide normal power supply, clock and reset signal for the ARM microprocessor; Storer provides program and data space for the ARM microprocessor; The demonstration control, ethernet controller, USB controller, serial ports controller and the CAN bus controller that are embedded in the ARM microprocessor processes minimum system provide embedded computer necessary Peripheral Interface; The PC104 time schedule controller provides unique PC104 international standard bus expansion for the embedded computer based on the ARM microprocessor.

Be embodied on the PC104 time schedule controller and further optimize, also not having in the world at present can be directly and universal PC 104 time schedule controllers of ARM Microprocessor Interface, this also is also not have at present the ARM microprocessor of success and PC104 bus in conjunction with the main cause of using, realize the PC104 sequential control by the programmable logic device (PLD) design, make the ARM microprocessor to link to each other with the PC104 bus and it is controlled.Referring to Fig. 2, PC104 bus control timing has been utilized the read-write NOE of ARM microprocessor processes and NEW, No. 24 address wire A24, internal memory chip selection signal nMemCS16, IO chip selection signal nIOCS16 and clock and reset signal CLOCK﹠amp; RST under the management of FPGA (Field Programmable Gate Array) inner function circuit, produces correct bus waiting signal PWAIT, enable signal AEN and ALE and the required signal of other PC104 control timing, thereby finishes the visit to the PC104 external expansion module.

The said apparatus of optimizing also comprises the power management module function, the power management module circuit of this device can monitoring system state, when ARM microprocessor during for idle state, power management module will enter the node mode of holding state, when task need be handled, the ARM microprocessor can be waken and enters up duty, this pattern has further been optimized the low-power consumption feature of ARM microprocessor.

Also include SDRAM and FLASH storer, adopt the non-linear FLASH chip of Nand, make the non-volatile memory capacity of this device can reach more than the 128M byte;

In addition, it also includes FPGA (Field Programmable Gate Array), and FPGA (Field Programmable Gate Array) is a kind of at the programmable device of system hardware, when application demand changes, by the redesign of FPGA (Field Programmable Gate Array) being satisfied the demand of practical application to hardware.

As known from the above, the utility model is a kind of PC104 embedded computer based on the ARM microprocessor, and it has following advantage compared to existing technology:

1, adopts low-power consumption ARM microprocessor, eliminated the demand of embedded computer, reduce system power dissipation and volume, reduced cost heat radiator and fan.

2, the design of PC104 time schedule controller has increased the PC104 bus expansion of ARM microprocessor, has greatly improved the dirigibility and the compatibility of application system design.

3, adopt programmable logic device (PLD), make this device have, adapted to the demand of when application requirements changes hardware being done corresponding modify at the system hardware programmable features.

4, intelligent electric power management template pattern makes device power consumption further be optimized.

5, above-mentioned advantage makes this device have high reliability, high-effect, low-power consumption, low cost, feature that volume is little.

Description of drawings:

Fig. 1 is the structured flowchart of the utility model based on the PC104 embedded computer of ARM microprocessor.

Fig. 2 is the PC104 time schedule controller circuit diagram that utilizes programmable logic device (PLD) to realize.

In Fig. 1～2,1. low-power consumption ARM microprocessor, 2. power management module,

3. Clock management and reseting logic, 4.SDRAM and FLASH storer,

5.LCD and CRT shows control, 6. standard serial port,

7. Ethernet interface, 8. infrared interface,

9.USB interface, the 10.CAN interface,

20.PC104 time schedule controller, the expansion of 21. parallel interfaces,

22.PS2 keyboard and mouse, the 23.PC104 expansion bus.

Embodiment

Below in conjunction with PC104 embedded computer embodiment the utility model is elaborated based on the ARM microprocessor.

Embodiment: this example based on the PC104 embedded computer structure of ARM microprocessor as shown in Figure 1, it is the ARM microprocessor of S3C2410A (200MHZ) that low-power consumption ARM microprocessor 1 is selected model for use, electricity is connected to power management module 2, Clock management and reseting logic 3, SDRAM and FLASH storer 4, LCD and CRT demonstration control 5, standard serial port 6, Ethernet interface 7, infrared interface 8, USB interface 9 and CAN interface 10 respectively, and wherein SDRAM and FLASH storer 4 are taken 32M SDRAM and 64M Flash storer; PC104 time schedule controller 20 electricity respectively is connected to parallel interface expansion 21, PS2 keyboard and mouse 22 and PC104 expansion bus 23, realizes that the model of the programmable logic chip of PC104 time schedule controller is: XC95144XL-10TQ144.Above-mentioned low-power consumption ARM microprocessor 1 again with PC104 time schedule controller 20 mutually electricity connect.

Peripheral computer that adopts among all embodiment and application module can adopt existing computing machine or application module.

Use the utility model can carry out the industrial data collection, handle and transmission.When coming into operation, industrial data collection, processing and transmission site of deployment generally have application demands such as data acquisition, data processing, data transmission and field control, and generally speaking, data acquisition and field control all adopt the PC104 expansion module to realize.

In actual applications, utilize PC104 data acquisition expansion card collection site data and information, information is delivered to the ARM microprocessor by PC104 bus timing controller, the ARM microprocessor with metadata cache in its external memory storage, and these data are analyzed and handle, the ARM microprocessor is stored in data processed result among the local nonvolatile memory FLASH, and pass through standard serial port, Ethernet interface, USB interface, and CAN bus or infrared interface, send the Local or Remote host computer to, host computer is done further to analyze and handle to the information of obtaining, form and carry out decision-making, decision information passes to the ARM microprocessor by above-mentioned communication interface once more, the ARM microprocessor sends to the PC104 These field control modules with command information by the isa bus time schedule controller after the order that receives is analyzed again, and the PC104 These field control modules is explained the host computer instruction, and carry out the control corresponding action, thereby realize the function of embedded computer in Industry Control Application.

Use the utility model also can carry out industrial data monitoring and man-machine interactive system running.When coming into operation, the industrial data monitoring is that typical people is at the loop industrial control system with man-machine interactive system, as the parameter monitoring of electric locomotive display control unit, workshop and control device or the like, the typical application demand of this system is to obtain monitoring parameter and by LCD display parameter and system running state, monitor and form control decision by artificial participant status by peripheral sensor and expansion module.

In actual applications, spot sensor generally passes through RS485/232, modes such as CAN bus send Monitoring Data to the ARM microprocessor, the parameter of part more complicated then needs to carry out data acquisition and send parameter to the ARM microprocessor by the PC104 bus by PC104 expansion AD module, after the ARM microprocessor is analyzed and is handled parameter, the parameter and the chart of tested device are shown by LCD display intuitively, the field personnel analyzes parameter and chart that LCD shows, auto levelizer running status and by input equipments such as touch-screen and keyboards device is control effectively.

Claims

1, a kind of PC104 embedded computer based on the ARM microprocessor, it is characterized in that including low-power consumption ARM microprocessor (1) and PC104 time schedule controller (20), described low-power consumption ARM microprocessor (1) electricity respectively is connected to power management module (2), Clock management and reseting logic (3), SDRAM and FLASH storer (4), LCD and CRT show control (5), standard serial port (6), Ethernet interface (7), infrared interface (8), USB interface (9) and CAN interface (10), described PC104 time schedule controller (20) electricity respectively is connected to parallel interface expansion (21), PS2 keyboard and mouse (22) and PC104 expansion bus (23), above-mentioned low-power consumption ARM microprocessor (1) and PC104 time schedule controller (20) electricity mutually connect.

2, the PC104 embedded computer based on the ARM microprocessor according to claim 1, it is characterized in that described PC104 time schedule controller (20) realizes the PC104 sequential control by programmable logic device (PLD) design, the ARM microprocessor is linked to each other with the PC104 bus and it is controlled.