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Multichannel data acquisition system and method

A data acquisition system and data acquisition technology, applied in general control systems, control/adjustment systems, instruments, etc., can solve problems such as inconvenient waveform printing, poor intelligence, and small display screens

Inactive Publication Date: 2008-04-30
蔡远文 +8
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional analog recorder has simple structure and single function, and has the following disadvantages: (1) Poor reliability and high failure rate
There are prone to failures such as paper jams, poor contact, and disconnection, and a lot of daily maintenance work; (2) Few measurement channels
Generally, each traditional analog recorder can only record 6-12 channels of signals at the same time
(3) High cost
The cost of a single 12-channel recorder is more than 200,000 yuan, and the special recording paper required by the recorder is 10 yuan per meter
(4) poor intelligence
The functions of traditional recorders are fixed, which is not convenient for data analysis, processing, storage and display
Due to the limitations of its structure and function, it cannot meet the needs of intelligence, data transmission network and online data analysis and processing in the process of launch vehicle test and launch test.
[0003] Most of the new data recorders made in China exist in the form of separate instruments, which have the following disadvantages: (1) A recorder usually only has 6-8 channels, which is not suitable for recording occasions with many signals, and it is inconvenient to expand; ( 2) The display screen is small, and it is inconvenient to observe the waveform; (3) Most of them do not have the ability of remote real-time transmission and recording, and cannot remotely control the start and stop of the acquisition process; (4) It is inconvenient to print the waveform, and it is necessary to configure a special printer. Use a generic printer
[0004] In addition, although some large-scale data acquisition and recording systems can have hundreds of acquisition channels, the data processing function is single, and it is generally only used to display data. During the acquisition process, some channels cannot be started and stopped at will, and then continue to collect
The post-processing is simple, and the signals from different channels cannot be arbitrarily combined for comparison and observation, and the price is extremely expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0141] Embodiment 2 stand-alone mode

[0142] Referring to Figure 15, the stand-alone mode adopts the acquisition computer to collect, process, store, display and print the data in real time.

[0143] ①Start to initialize the program and its interface;

[0144] ② Determine whether to collect data, if not to collect data, but to read the original stored data, then call the file operation module to restore the data; if start collecting data, then call the hardware setting module and perform hardware setting module configuration;

[0145] ③ Call the data acquisition and display module for real-time acquisition and display;

[0146] ④ After the data restoration or collection is completed, call the playback operation module to display the playback of the data;

[0147] ⑤ If the user performs data processing, call the data processing module for data processing and analysis;

[0148] ⑥After the data processing and analysis, call the file storage operation module to store the data...

Embodiment 3

[0185] Embodiment 3 remote control computer mode

[0186] Referring to Fig. 16 and Fig. 17, the remote control computer mode adopts the acquisition computer and the control computer connected through the network to collect, process, store, display and print the data in real time.

[0187] 1. Acquisition computer:

[0188] ①Start, initialize the program and its interface and network initialization;

[0189] ②Wait for the control computer to send the acquisition parameters and start instructions, and then collect the data after the control computer instructs the acquisition computer to start and send the parameters;

[0190] ③Real-time processing and display of collected data;

[0191] ④ Save the collected data in real time;

[0192] ⑤Remote transmission of collected data;

[0193] ⑥ If new acquisition parameters or instructions are received from the control computer during the acquisition process, the corresponding parameters are changed or new instructions are executed;

...

Embodiment 4

[0214] Embodiment 4 Remote control computer-echo computer mode

[0215] Referring to Fig. 16, Fig. 17 and Fig. 18, the remote control computer-echo computer mode uses the acquisition computer, control computer and echo computer connected through the network to collect, process, store, display and print data in real time.

[0216] 1. Acquisition computer:

[0217] ①Start, initialize the program and its interface and network initialization;

[0218] ②Waiting for the control computer to send acquisition parameters and start instructions, after the control computer instructions start and send parameters, the acquisition computer performs data acquisition;

[0219] ③Real-time processing and display of collected data;

[0220] ④ Save the collected data in real time;

[0221] ⑤Remote transmission of collected data;

[0222] ⑥ If new acquisition parameters or instructions are received from the control computer during the acquisition process, the corresponding parameters are changed ...

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Abstract

The multi-channel data acquisition system provided by the present invention includes an acquisition computer, an acquisition display and an acquisition end printer, the acquisition computer is equipped with a plurality of A / D acquisition cards and a buffer, and each A / D acquisition card input terminal is provided with a voltage Isolation conditioner, the acquisition computer is connected to the control computer and the echo computer through the back end of the Ethernet, the control computer is installed with a dual-screen display card, and connected to the master and slave monitors and the control terminal printer respectively, and the echo computer is connected to the echo display and the echo printer. The invention also provides a method for multi-channel data acquisition. The invention has the advantages of being able to measure multiple channels, suitable for multi-signal recording occasions, convenient display and printing of data and waveforms, high degree of automation and accuracy, and conducive to intelligent acquisition, especially suitable for rocket launching and weapon testing , petrochemical and other dangerous and heavily polluted on-site signal detection and recording occasions.

Description

technical field [0001] The invention relates to a control device, in particular to a multi-channel data acquisition system and its method. Background technique [0002] At present, the traditional analog recorder has simple structure and single function, and has the following disadvantages: (1) Poor reliability and high failure rate. There are prone to failures such as paper jams, poor contact, and disconnection, and a lot of daily maintenance work; (2) There are few measurement channels. Generally, each traditional analog recorder can only record 6-12 signals at the same time. (3) The cost is high. The cost of a single 12-channel recorder is more than 200,000 yuan, and the special recording paper required by the recorder is 10 yuan per meter. (4) poor intelligence. When the test data is abnormal, it must be interpreted by experienced technicians, and the requirements for testers are high. The functions of traditional recorders are fixed, which is not convenient for dat...

Claims

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Application Information

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IPC IPC(8): G05B19/048
Inventor 蔡远文张迎新陈胜姚静波迟明华王华马昕晖程龙杨健
Owner 蔡远文
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