Multi-channel real-time data acquisition system

A real-time data acquisition, multi-channel technology, applied in general control systems, control/regulation systems, instruments, etc., can solve the problems of low data transmission rate, single signal channel number, and inability to collect multi-channel signals in parallel, so as to save switches Effects of conversion time and delay, cost reduction, board area saving and hardware resource saving

Inactive Publication Date: 2017-11-21
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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Problems solved by technology

However, the shortcomings of this type of test equipment are: the number of signal channels collected is single, multi-channel signals cannot be collected in parallel, and the data transmission rate is low, which cannot meet the needs of high-speed, real-time, multi-channel parallel detection of the working status of the multi-axis linkage control system

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Embodiment

[0020] see Figure 1 to Figure 4 , the present invention provides a kind of technical scheme: a kind of multi-channel real-time data acquisition system, comprises FPGA controller 1 and data transmission module 2, and described FPGA controller 1 adopts the FPGA of Spartan-3 series as PCI data transmission control FPG, uses To realize PCI9054 interface control, SDRAM read and write operation control and LVDS interface control, the bidirectional port of the FPGA controller 1 is electrically connected to three A / D converters 3 through control lines, wherein the two A / D converters 3. Receive the control signal processed by the signal conditioning circuit 4, and another A / D converter receives the switch signal processed by the signal conditioning circuit. The A / D converter selects the Max1308 chip as the core chip of the signal acquisition circuit, and supports multiple Simultaneous sampling of up to 8 channels adopts high precision, and the input end of the signal conditioning circ...

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Abstract

The invention discloses a multi-channel real-time data acquisition system. The system comprises an FPGA controller and a data transmission module. A bidirectional port of the FPGA controller is electrically connected with three A / D converters through control lines. Two of the A / D converters receive control signals processed through a signal conditioning circuit, and the other A / D converter receives a switch signal processed by the signal conditioning circuit. Control signals of the channels are directly subjected to signal conditioning and then parallelly acquired at the high speed by other two A / D conversion circuits. Multiple paths of control signals of other channels are selected through multiple paths of switches, so board area is reduced and hardware resources are saved. The output end of the FPGA controller is connected with a data transmission FPGA control circuit through an LVDS high speed serial communication circuit. Data interaction is achieved for feedback data directly through an RS-422 communication and multi-shaft moving control system. The feedback data is then transmitted to a main control computer at the high speed through a PCI bus, so high-speed large-capacity data detection is achieved and data processing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of data acquisition systems, in particular to a multi-channel real-time data acquisition system. Background technique [0002] Modern motion control has become a comprehensive discipline that intersects many disciplines such as electrical machinery, power electronics technology, microelectronics technology, computer control technology, control theory, signal detection and processing technology. Multi-axis motion control technology integrates many key technologies in the field of modern motion control, and is the core of manufacturing digitization, industrial modernization and production process automation. The multi-axis linkage control system adopts advanced multi-axis motion control technology, and is widely used in multi-axis linkage CNC machine tools, multi-axis linkage CNC machining centers, multi-degree-of-freedom industrial robots, complex industrial automation production lines and aerospace fields. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 强俊汪军窦易文章平刘涛
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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