Multiprotocol compatible multipath signal acquisition system

A multi-channel signal and acquisition system technology, applied in the field of signal processing, can solve problems such as difficult to meet the requirements of data output, and achieve the effect of convenient system update, convenient operation, and simplified control circuit

Active Publication Date: 2016-06-01
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, a single output terminal is also difficult to meet the data output requirements of different systems

Method used

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  • Multiprotocol compatible multipath signal acquisition system
  • Multiprotocol compatible multipath signal acquisition system
  • Multiprotocol compatible multipath signal acquisition system

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the principle of the present invention and working process will further illustrate the present invention.

[0021] figure 1 It is a schematic diagram of the acquisition board corresponding to the multi-channel signal acquisition system of the present invention. The upper computer is used to set the signals received by each input interface as EnDat protocol signals, BiSS protocol signals or orthogonal incremental signals; the setting information of the upper computer is read by the programmable logic device as its input to determine which decoding it uses Module decoding; the signals sent by the three protocols are all differential signals, so the differential data signal is transmitted to the data acquisition board through the interface, and the signal is transmitted to the programmable logic device after the differential to single-ended circuit;

[0022] The programmable logic device adopts a hardware programming languag...

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Abstract

The invention provides a multiprotocol compatible multipath signal acquisition system. The system comprises a signal receiving unit, a logic processing unit, a signal transmitting unit and an upper computer. Compatible signals include three types of signals of an EnDat protocol signal, a BiSS protocol signal and an orthogonal increment signal. The signal receiving unit comprises multiple RS-422 / 485 input interfaces and corresponding difference circuits. The logic processing unit is a programmable logic device. The signal transmitting unit comprises an optical fiber output interface, an RS-485 output interface and a corresponding difference circuit. The upper computer is provided with various interfaces which can receive any signals of the three types of signals. The data signals received by the input interfaces are processed by the programmable logic device and then outputted by the RS-485 interface and the optical fiber interface respectively. Acquisition of different types of signals is realized by utilizing one interface and the signals are outputted by two modes so that flexibility and practicality of the signal acquisition system can be greatly increased, and thus the signal acquisition system can meet different signal acquisition requirements.

Description

technical field [0001] The invention relates to a multi-channel signal acquisition system compatible with multi-protocols, which is mainly used in electromechanical control systems and belongs to the technical field of signal processing. Background technique [0002] In large-scale motion control systems, it is often necessary to use different displacement sensors, such as incremental grating scales, absolute grating scales, capacitive scales, photoelectric position sensors, etc., to obtain position feedback of the motion system. The interface protocols of different sensors are different. Among them, the absolute position sensors mostly use EnDat protocol or BiSS protocol coding, while the incremental sensors mostly use orthogonal incremental coding, so the system often needs to configure corresponding data acquisition for each signal. board. [0003] In the actual data acquisition process, different data acquisition boards are used to collect data on different protocol int...

Claims

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L69/18
Inventor 朱煜杨开明成荣李鑫王希远梁志敏段宏宇袁翠平李晓通廖晨翔
Owner TSINGHUA UNIV
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