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A multi-channel signal acquisition system and acquisition method

A signal acquisition system and signal acquisition technology, applied to the program control and electrical program control of the sequence/logic controller, etc., can solve the problem that the number of channels cannot be easily expanded and cut.

Active Publication Date: 2018-12-11
合肥欣奕华智能机器股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a multi-channel signal acquisition system and acquisition method, which can solve the problem that the number of channels cannot be easily expanded and cut in the prior art

Method used

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  • A multi-channel signal acquisition system and acquisition method
  • A multi-channel signal acquisition system and acquisition method
  • A multi-channel signal acquisition system and acquisition method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0022] This embodiment provides a multi-channel signal acquisition system, such as figure 1 As shown, the multi-channel signal acquisition system specifically includes a main controller 1 , at least one shift register 2 , several signal switches 3 , several devices under test 4 and a signal acquisition circuit 5 .

[0023] Specifically, the main controller 1 includes a first output terminal (represented by IO1 in the figure) for outputting a clock signal and a second output terminal (represented by IO2 in the figure) for outputting an initial signal.

[0024] The shift register 2 includes a first input terminal (represented by CLK in the figure), a second input terminal (represented by DAT in the figure), and N output terminals (represented by QP1˜QPn in the figure), where N≥2. When the multi-channel signal acquisition system only includes a shift register 2, the first input end of the shift register 2 is connected to the first output end of the main controller 1, and the seco...

Embodiment 2

[0042] This embodiment provides a multi-channel signal acquisition method, and the multi-channel signal acquisition method is applied to the multi-channel signal acquisition system as described in the first embodiment.

[0043] like image 3 As shown, the multi-channel signal acquisition method specifically includes:

[0044] Step S1: The device under test outputs a detection signal.

[0045] Step S2: the main controller outputs the clock signal and the initial signal, drives the output end of the shift register to perform shift output, and the first output end of the shift register outputs a switch control signal.

[0046] Step S3: The switch control signal controls the signal switch connected to the first output terminal to be turned on, and the detection signal output by the corresponding device under test is transmitted to the signal acquisition circuit.

[0047] Step S4: the signal acquisition circuit collects the transmitted detection signal, and processes the collecte...

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Abstract

The invention provides a multi-channel signal acquisition system and a multi-channel signal acquisition method, relating to the technical field of automatic control and can realize channel quantity expansion and reduction. The acquisition system comprises a main controller, at least one shifting register, a plurality of signal switches, a plurality of detected equipment and a signal acquisition circuit; the main controller can output a clock signal and an initial signal; the shifting register comprises a first input end, a second input end and N output ends; when the plurality of shifting registers are arranged, the plurality of shifting registers are cascaded; each signal switch is connected with an output end of the shifting register and the signal switches are connected with the different output ends; the detected equipment is correspondingly connected with the signal switches one to one; the signal acquisition circuit is connected with the signal switches and the main controller and is used for acquiring a detection signal output by the detected equipment; and the main controller is used for selectively reading the detection signal acquired by the signal acquisition circuit according to actual requirements. The system is used for acquiring a multi-channel signal.

Description

technical field [0001] The invention relates to the technical field of automatic detection and control, in particular to a multi-channel signal acquisition system and acquisition method. Background technique [0002] In the field of automation control, it is often necessary to collect multi-channel signals. There are two traditional multi-channel signal acquisition methods: the first acquisition method is to use an acquisition device with multiple channels or use multiple acquisition devices, such as an analog-to-digital conversion chip with multiple input channels, for multi-channel signal acquisition. However, the number of channels of this acquisition device is fixed, and it can only collect signals with a fixed number of channels. Compared with other chips, the price of analog-to-digital conversion chips is higher, and multi-channel analog-to-digital conversion chips are more expensive, so this method will greatly increase increase system cost; the second acquisition me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 王松柏孙亮王毅何烽光
Owner 合肥欣奕华智能机器股份有限公司