System for data acquisition and signal treatment of testing flat wheel

A detection data and signal processing technology, applied in the direction of electrical digital data processing, input/output process of data processing, railway vehicle testing, etc., can solve problems such as unsatisfactory, low speed, low precision, etc., to improve speed and precision and efficiency, the effect of optimal design

Inactive Publication Date: 2008-06-25
HARBIN ENG UNIV
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Problems solved by technology

With the continuous improvement of railway transportation speed, the amount of front-end data has also increased significantly, and higher requirements have been placed on the data acquisition system. The low-precision, low-speed and low-speed communication methods of single-chip microcomputers and low-speed DSPs have been unable to meet the new requirements of the railway system. Require

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  • System for data acquisition and signal treatment of testing flat wheel
  • System for data acquisition and signal treatment of testing flat wheel
  • System for data acquisition and signal treatment of testing flat wheel

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Embodiment Construction

[0033] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0034] The DSP-based flat wheel detection data acquisition and signal processing system and working method of the present invention have an overall block diagram of the system as shown in Figure 1. Combined with Figure 1, the system uses high-speed floating-point DSP TMS320c67xx as the main processing chip, and uses the complex programmable logic device EPM7xxxS as the auxiliary control and processing chip to control two analog-to-digital converters ADS78xx to collect and convert 12 channels of front-end analog data in real time, and use The dual-port RAM chip IDT70Vxx is used as the interface of the monitoring system of the flat wheel detection system to realize the mutual visit between the system and the monitoring system and the real-time high-speed transmission of data. TMS320c67xx expands a piece of 8M bit FLASHam291vxxxb and two pieces of 16M*8bit SDRAM HY57...

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Abstract

The invention provides a flat wheel detection data acquisition and signal processing system, which consists of seven parts, namely a power module, an AD sampling input front end conditioning module, an AD sampling conversion module, a data program memory module, an interruption management module, a high speed communication module and a reset module. The invention applies a high speed floating point DSP chip, a high speed low consumption double 12-bit parallel A / D converter, a dual-ported RAM chip and a complicated programmable logic device to the flat wheel detection data acquisition and signal processing system, develops a data acquisition and processing system taking the high speed floating point DSP as a core processor, and improves the speed, accuracy and stability of flat wheel detection data acquisition and processing (in addition, the system control, communication and monitoring is handled by ARM-VxWORK, and communication takes a form of network card.), thereby improving the performance index of the whole flat wheel detection system.

Description

(1) Technical field [0001] The invention relates to a flat wheel detection data collection and signal processing technology used in railway systems. (2) Background technology [0002] The flat wheel detection data acquisition and signal processing system is an important part of the flat wheel detection system of the railway system, and plays an important role in the stability, efficiency, intelligence and accuracy of the flat wheel detection equipment. Its main functions are mainly reflected in the following aspects: (1) Collect the analog electrical signal output by the front end of the flat wheel detection system, and provide a reliable and effective source of accurate digital data for the detection algorithm of the flat wheel detection system. (2) Provide an efficient and stable hardware carrier for the operation of vehicle counting, axle counting, and detection algorithms. (3) Complete the real-time communication and data transmission with the detection control system i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/08G01M17/10G06F3/05
Inventor 张兴周杨志刚郜丽鹏王鹏飞韩亮张博为战永兴田金超胡文飞
Owner HARBIN ENG UNIV
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