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Analog and digital signal acquisition and interlocking control device

A digital signal and interlocking control technology, applied in the direction of electrical program control, sequence/logic controller program control, etc., can solve the problem of single function and achieve high promotion value and wide application range

Active Publication Date: 2014-08-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing analog and digital signal acquisition equipment can only complete the acquisition of one signal and has a single function, and provides an analog and digital signal acquisition and chain control device

Method used

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  • Analog and digital signal acquisition and interlocking control device
  • Analog and digital signal acquisition and interlocking control device
  • Analog and digital signal acquisition and interlocking control device

Examples

Experimental program
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specific Embodiment approach 1

[0052] Specific embodiment one: the following combinationfigure 1 This embodiment is described. The analog-digital signal acquisition and chain control device described in this embodiment is used to collect the signal output by the external device 1. The signal output by the external device 1 includes analog signals and digital signals, and it includes an analog signal acquisition circuit. 3. Digital signal acquisition circuit 4, relay unit 5 and digital signal processor 6,

[0053] The analog signal acquisition circuit 3 provides 32 channels of analog signal acquisition capability, which is used to acquire the analog signal output by the external device 1, process it and transmit it to the digital signal processor 6;

[0054] The digital signal acquisition circuit 4 provides 16 channels of digital signal acquisition capability, which is used to acquire the digital signal output by the external device 1 and process it and transmit it to the digital signal processor 6;

[0055]...

specific Embodiment approach 2

[0059] Specific embodiment two: the following combination figure 1 This embodiment is described. This embodiment further describes Embodiment 1. This embodiment also includes a USB interface 7 and a host computer 2.

[0060] The host computer 2 transmits data and command signals through the USB interface 7 and the digital signal processor 6 .

specific Embodiment approach 3

[0061] Specific embodiment three: the following combination figure 1 and figure 2 This embodiment is described. This embodiment further describes the first or second embodiment. The analog signal acquisition circuit 3 in this embodiment is composed of an analog multiplexer circuit 3-1, an operational amplifier 3-2 and an AD conversion circuit 3-3. composition,

[0062] The analog multiplex switch circuit 3-1 is used to collect the analog signal output by the external device 1 and pass one of the multiplex analog signals through the operational amplifier 3-2, then switch to the AD conversion circuit 3-3, and the AD conversion circuit 3-3 The output digital signal is sent to the digital signal processor 6 .

[0063] In this embodiment, the analog multiplexing circuit 3-1 is implemented by using a MAX307 chip, which can switch one of the 32 analog signals to the AD conversion circuit. Operational amplifier 3-2 adopts AD620 chip; AD conversion circuit 3-3 adopts AD976 chip.

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Abstract

The invention discloses an analog and digital signal acquisition and interlocking control device and belongs to the technical field of signal acquisition and control. The analog and digital signal acquisition and interlocking control device is used for solving the problems that an existing analog and digital signal acquisition device can only acquire one type of signals and is single in function. An analog and digital signal acquisition circuit of the analog and digital signal acquisition and interlocking control device provides the capacity for acquiring 32 paths of analog signals, and analog signals output by a peripheral are acquired and transmitted to a digital signal processor after being processed; a digital signal acquisition circuit provides the capacity for acquiring 16 paths of digital signals and used for acquiring digital signals output by the peripheral and transmitting the digital signals to the digital signal processor after processing the digital signals; the digital signal processor judges the current state of the external device and outputs a control signal to a relay unit, and the relay unit has on-off control over the external device through at most eight paths of relays; the digital signal processor simultaneously acquires the state signals of the relays of the relay unit. The device is used for acquiring the analog and digital signals and having interlocking control over the external device.

Description

technical field [0001] The invention relates to an analog digital signal acquisition and chain control device, belonging to the technical field of signal acquisition and control. Background technique [0002] With the development of science and technology and the improvement of market demand, there are more and more analog signal acquisition products and digital signal acquisition products, and their product quality is also constantly improving. The development of chip technology has continuously improved the accuracy and speed of analog signal acquisition, and at the same time, the capacity of digital signal acquisition has also continued to increase, and the anti-interference performance has continued to improve. However, at present, most products can only complete the acquisition of one type of signal, and cannot realize switch control of related equipment according to the signal acquisition result during the signal acquisition process. SUMMARY OF THE INVENTION [0003...

Claims

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Application Information

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IPC IPC(8): G05B19/04
Inventor 林连雷姜守达
Owner HARBIN INST OF TECH
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