CN205210623U - Analog data acquisition controller based on DSP+ARM industry treater and FPGA - Google Patents

Abstract

The utility model discloses an analog data acquisition controller based on DSP+ARM industry treater and FPGA, including a DSP+ARM industry treater and a FPGA unit, the DSP+ARM industry treater OMAP -L138 of american TI company is chooseed for use to DSP+ARM industry treater, the FPGA unit adopts a XC3S500E chip, and through HPI interface connection between XC3S500E and the OMAP -L138, XC3S500E is connected with AD collection module and DA output module through SPI serial bus respectively, the utility model discloses use DSP+ARM industry treater as the master controller, the hardware design that adopts FPGA unit and AD and DA to combine together simultaneously, this kind of hardware circuit structure processing speed is fast, and the precision is high, possible data processing and data acquisition's parallel processing to improve the real -time of AD data acquisition and DA output control. Simultaneously the utility model discloses abundant peripheral hardware interface and data interactive interface have.

Description

Based on the analog data acquisition controller of DSP+ARM industrial handlers and FPGA

Technical field

The utility model belongs to analog data acquisition controller technology field, is specifically related to a kind of analog data acquisition controller based on DSP+ARM industrial handlers and FPGA.

Background technology

Data acquisition, refers to automatic collection non electrical quantity or electric quantity signal from the analog-and digital-unit under tests such as sensor and other Devices to test, delivers in host computer and carry out treatment and analysis.AD (AnalogtoDigital) analog to digital conversion is exactly to analog quantity, is generally voltage, gathers, by its digitizing.DA (DigitaltoAnalog) index mode convertion, contrary with AD process, exactly digital signal is converted to simulating signal, export as control.

The most general control system based on AD and DA of current application as shown in Figure 1.System equipment comprises: AD data collecting card, DA control card and main control system, and main control system is connected with AD and DA equipment by data bus (as pci bus, usb bus etc.).Main control system obtains data from AD data collecting card, after completing process data, exports control signal by DA control card.Therefore, set of system is often made up of multiple equipment, the defects such as (easily cause work unreliable) that has that volume is comparatively large, connecting line is more.Further, if main control system is industrial computer or PC, due to operating system, control cycle is longer; And due to this kind equipment power, the problem such as connecting line, often precision is not high, be difficult to meet some scientific research apparatus at a high speed, high-precision requirement.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of analog data acquisition controller based on DSP+ARM industrial handlers and FPGA.This analog data acquisition controller with DSP+ARM industrial handlers for primary controller, adopt the hardware design that FPGA unit combines with AD and DA simultaneously, this hardware circuit processing speed is fast, precision is high, the parallel processing of data processing and data acquisition can be accomplished, thus improve the real-time of AD data acquisition and DA output control.The utility model has abundant Peripheral Interface and data interaction interface simultaneously.

The utility model is achieved through the following technical solutions:

Based on an analog data acquisition controller of DSP+ARM industrial handlers and FPGA, comprise a DSP+ARM industrial handlers and a FPGA unit;

Described DSP+ARM industrial handlers selects the DSP+ARM industrial handlers OMAP-L138 of American TI Company;

Described FPGA unit adopts an XC3S500E chip, is connected between XC3S500E and OMAP-L138 by HPI interface, and XC3S500E is connected with AD acquisition module and DA output module respectively by SPI universal serial bus;

OMAP-L138 is connected with DDR3RAM module and NandFlash module;

OMAP-L138 connects a usb interface module and an ethernet module;

OMAP-L138 is also connected with liquid crystal display and touch-screen.

In technique scheme, described AD acquisition module comprises 4 road AD input ports; Described DA output module comprises 4 road DA output ports;

Advantage of the present utility model and beneficial effect are:

The utility model with DSP+ARM industrial handlers for primary controller, adopt the hardware design that FPGA unit combines with AD and DA simultaneously, this hardware circuit processing speed is fast, precision is high, the parallel processing of data processing and data acquisition can be accomplished, thus improve the real-time of AD data acquisition and DA output control.The utility model has abundant Peripheral Interface and data interaction interface simultaneously.

Accompanying drawing explanation

Fig. 1 is the Control system architecture of traditional AD and DA.

Fig. 2 is structural representation of the present utility model.

Embodiment

The technical solution of the utility model is further illustrated below in conjunction with specific embodiment.

The analog data acquisition controller based on DSP+ARM industrial handlers and FPGA involved by the utility model, comprises a DSP+ARM industrial handlers and a FPGA unit;

Described DSP+ARM industrial handlers is as the main control chip of this analog data acquisition controller, it selects the DSP+ARM industrial handlers OMAP-L138 of American TI Company, and this chip comprises the DSP kernel that the ARM9 kernel of an ARM926EJ-S and can carry out the TMS320C674x of floating-point operation.Wherein, ARM9 kernel runs built-in Linux operating system, for carrying out network data communication with upper PC control end, runs application, resolution data etc.; DSP kernel runs control algolithm, processes the AD data gathered, and by the algorithm preset, control DA exports;

Described FPGA unit adopts an XC3S500E chip, is connected between XC3S500E and OMAP-L138 by HPI interface, and XC3S500E is connected with AD acquisition module and DA output module respectively by SPI universal serial bus; Combined with AD and DA by FPGA unit, the parallel processing of data processing and data acquisition can be accomplished, thus improve the real-time of AD data acquisition and DA output control.Described AD acquisition module comprises the AD input port that 4 tunnel 18 bit resolution sampling rates are 400K; Described DA output module comprises the DA output port that 4 tunnel 18 bit resolutions are 1 microsecond Time Created;

OMAP-L138 is also connected with the DDR3RAM module of 512MB and the NandFlash module of 256MB, and it is respectively used to data and stores and program operation;

OMAP-L138 is also connected with multiple data interaction interface, comprises a usb interface module, an ethernet module;

OMAP-L138 is also connected with man-machine interaction unit, comprises liquid crystal display and touch-screen.

Above exemplary description is done to the utility model; should be noted that; when not departing from core of the present utility model, any simple distortion, amendment or other those skilled in the art can not spend the equivalent replacement of creative work all to fall into protection domain of the present utility model.

Claims (2)

1., based on an analog data acquisition controller of DSP+ARM industrial handlers and FPGA, it is characterized in that: comprise a DSP+ARM industrial handlers and a FPGA unit;

Described DSP+ARM industrial handlers selects the DSP+ARM industrial handlers OMAP-L138 of American TI Company;

Described FPGA unit adopts an XC3S500E chip, is connected between XC3S500E and OMAP-L138 by HPI interface, and XC3S500E is connected with AD acquisition module and DA output module respectively by SPI universal serial bus;

OMAP-L138 is connected with DDR3RAM module and NandFlash module;

OMAP-L138 connects a usb interface module and an ethernet module;

OMAP-L138 is also connected with liquid crystal display and touch-screen.

2. the analog data acquisition controller based on DSP+ARM industrial handlers and FPGA according to claim 1, is characterized in that: described AD acquisition module comprises 4 road AD input ports; Described DA output module comprises 4 road DA output ports.