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Endat signal acquisition card based on three-connection mode

A signal acquisition and three-way technology, which is applied in the field of acquisition cards, achieves the effects of easy use, high sampling accuracy, and improved sampling accuracy

Inactive Publication Date: 2015-05-27
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the currently reported literature, there is no acquisition card or device that acquires Endat signals through the three-way method, so the development of this type of acquisition card will have important scientific research value and engineering significance

Method used

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  • Endat signal acquisition card based on three-connection mode
  • Endat signal acquisition card based on three-connection mode
  • Endat signal acquisition card based on three-connection mode

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Experimental program
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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] see figure 1 , the present invention adopts the built-in sensor signal sampling principle, obtains the feedback signal between the industrial equipment and the control system through the three-way method, and introduces the separated signal to the acquisition under the premise that the industrial control system will not be affected. In the system, to achieve the purpose of acquiring signals, the acquisition system includes a computer and an acquisition card.

[0030] see figure 2 The acquisition card of the present invention is an Endat signal acquisition card based on a three-way mode, and has two signal input interfaces. The main functional units of the acquisition card include: a differential signal processing unit, a programmable logic device (FPGA), a single-chip microcomputer (MCU), Expansion interface circuit (extension interface unit), data cache unit...

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Abstract

The invention discloses an Endat signal acquisition card based on a three-connection mode. The Endat signal acquisition card comprises a differential signal processing unit, a programmable logic device, a single chip microcomputer, an expansion interface circuit, a data-caching unit, a communication interface circuit and a power switching and voltage stabilizing circuit. The acquisition card is in data communication with a computer through a USB 2.0 interface. The Endat signal acquisition card achieves the purpose of Endat signal acquisition in the three-connection mode, provides a independent signal input interface with two channels and can be used in the field of industrial measurement and control. The Endat signal acquisition card has the advantages of being high in sampling accuracy, high in data accuracy, wide in sampling frequency range, continuous and adjustable, convenient to install, easy to use and the like.

Description

technical field [0001] The invention relates to the field of industrial measurement and control, in particular to an acquisition card for acquiring Endat signals in a three-way manner in the field of industrial measurement and control. Background technique [0002] With the development of numerical control technology, absolute photoelectric encoders and gratings are more and more used in numerical control systems to monitor the movement of machine tools due to their advantages such as convenient information acquisition, long transmission distance, and low working noise. Faced with this development trend, many companies in the same industry at home and abroad have developed interface protocols for absolute measuring components. Among them, the Endat interface launched by German Heidenhain has been recognized by major CNC manufacturers around the world because of its high quality and low cost. It is widely used in the field of high-precision and high-performance numerical cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
Inventor 陶涛范胜乾梅雪松赵飞姜歌东
Owner XI AN JIAOTONG UNIV