CN117148028A - Data acquisition instrument with automatic calibration function and calibration method thereof - Google Patents
Data acquisition instrument with automatic calibration function and calibration method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004891 communication Methods 0.000 claims abstract description 48
- 238000002955 isolation Methods 0.000 claims abstract description 26
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- 238000012545 processing Methods 0.000 claims description 20
- 230000004672 jump response Effects 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 2
- 230000006870 function Effects 0.000 description 18
- 230000004927 fusion Effects 0.000 description 4
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
Abstract
The application provides a data acquisition instrument with an automatic calibration function and a calibration method thereof, wherein the data acquisition instrument comprises: the system comprises an acquisition module, a signal modulation module and an isolation module; the acquisition module is electrically connected with the communication module, and is configured to select a matched acquisition channel to acquire data and perform acquisition and transmission of high-speed serial data through the communication module; the signal modulation module is configured to receive the acquisition signal of the acquisition module and modulate the acquisition signal; the isolation module is electrically connected with the power supply module, and is configured to acquire a power supply signal generated by the power supply module, perform pulse modulation on the power supply signal to generate an alternating electric field, generate an isolated power supply after rectification and signal conditioning of the filtering, and generate a corresponding voltage signal according to the isolated power supply; through the modulation to the acquisition signal, make the comparatively accurate data acquisition that carries on of acquisition signal, limit the interval of acquisition data through isolating voltage signal, reduce the redundancy of acquisition data.
Description
Technical Field
The application relates to the field of data acquisition and calibration, in particular to a data acquisition instrument with an automatic calibration function and a calibration method thereof.
Background
The portable and lightweight data collector/graph recorder can measure the temperature/humidity and analog voltage of 10 channels at the same time. With a wide color screen, it is easier to see captured data and easily set parameters to observe waveforms and data at test time. Captured data can be more easily reproduced by the function and can be saved to instrument memory or external USB memory; for most manufacturing enterprises, automatic data acquisition of a measuring instrument is always a trouble, even if the instrument is provided with interfaces such as RS232/485 and the like, the instrument is still used for measurement while being manually recorded on paper, and finally the data is input into a PC for processing, so that the method is heavy in work, meanwhile, the accuracy of the data cannot be ensured, often, the data obtained by a manager is delayed by two days, and for poor product information and related yield data on site, how to realize high-efficiency, simple and real-time data acquisition is a great problem, the error calibration of the acquired data cannot be carried out in the data acquisition process of the existing data acquisition instrument, so that the error of the acquired data is large, the deviation of a data analysis result is large, and aiming at the problems, the technical scheme to be effective is needed at present.
Disclosure of Invention
An object of an embodiment of the present application is to provide a data acquisition instrument with an automatic calibration function and a calibration method thereof,
the embodiment of the application also provides a data acquisition instrument with an automatic calibration function, which comprises: the system comprises an acquisition module, a signal modulation module and an isolation module;
the acquisition module is electrically connected with the communication module, and is configured to select a matched acquisition channel to acquire data and perform acquisition and transmission of high-speed serial data through the communication module;
the signal modulation module is configured to receive the acquisition signal of the acquisition module and modulate the acquisition signal;
the isolation module is electrically connected with the power module, and is configured to acquire a power signal generated by the power module, pulse-modulate the power signal to generate an alternating electric field, generate an isolated power after rectifying and filtering signal conditioning, and generate a corresponding voltage signal according to the isolated power.
Optionally, in the data acquisition instrument with an automatic calibration function according to the embodiment of the present application, the isolation module is electrically connected to an IO interface module, and the IO interface module performs remote acquisition on data according to the isolated voltage signal and generates corresponding acquisition parameters.
Optionally, in the data acquisition instrument with an automatic calibration function according to the embodiment of the present application, the acquisition parameters include an acquisition rate, an upper limit value of an acquisition signal, a lower limit value of an acquisition signal, an upper limit value of an isolation voltage, a lower limit value of an isolation voltage, and power of an isolation power supply.
Optionally, in the data acquisition instrument with an automatic calibration function according to the embodiment of the present application, the acquisition module is electrically connected with a plurality of acquisition channel modules, the plurality of acquisition channel modules are grouped, the acquisition channel modules are configured to perform uninterrupted acquisition according to a set acquisition frequency, acquisition parameters of different acquisition channel modules are different, an acquisition protocol is set between the plurality of acquisition channel modules, and the plurality of acquisition channel modules are grouped and collected in a linkage manner according to the acquisition protocol.
Optionally, in the data acquisition instrument with an automatic calibration function according to the embodiment of the present application, a communication module is disposed between the acquisition module and the power module, and the communication module is configured to configure the acquisition parameters of the acquisition module according to a matched communication protocol, and the acquisition module performs data acquisition according to the acquisition parameters, and performs self-inspection on the acquisition channel module according to the communication protocol.
Optionally, in the data acquisition instrument with an automatic calibration function according to the embodiment of the present application, the data acquisition instrument further includes a central processing unit and a Flash module, the Flash module is electrically connected with the central processing unit, the central processing unit is electrically connected with the acquisition module, the Flash module is used for storing data acquired by the acquisition module and generating Flash data, and the central processing unit is configured to store the Flash data in the Flash module and call and read-write configuration the Flash data in the Flash module.
Optionally, in the data acquisition instrument with an automatic calibration function according to the embodiment of the present application, the data acquisition instrument further includes a storage module, the storage module is electrically connected to the central processor, the storage module stores the data acquired by the acquisition module, and acquires the storage remaining space in real time, the storage module generates a storage serial number, and the storage module orders and stores the acquired data according to the acquisition time according to the storage serial number.
In a second aspect, an embodiment of the present application provides a data calibration method, which is applied to a data acquisition instrument with an automatic calibration function, including the following steps:
acquiring an acquisition environment, and setting corresponding acquisition parameters according to the acquisition environment;
the data acquisition instrument acquires signals according to the set acquisition parameters, and modulates the acquired signals to obtain modulated signals;
setting acquisition interval time, and acquiring multiple time nodes according to the modulation signals and the acquisition interval time to obtain acquisition data under a plurality of time nodes;
analyzing the data jump degree of the collected data of different time nodes to obtain a jump response curve;
calculating an error value of the acquired data by analyzing the jump response curve, and correcting the acquired parameters according to the error value.
Optionally, in the data calibration method according to the embodiment of the present application, the data acquisition instrument performs acquisition signals according to set acquisition parameters, performs modulation processing on the acquisition signals, and further includes:
acquiring an acquisition signal, extracting signal characteristics, and calculating the frequency of the acquisition signal;
calculating frequency difference information according to the frequency of the acquired signal;
generating modulation parameters according to the frequency difference information, adjusting the acquisition signals according to the modulation parameters, and generating a modulation result;
judging whether the modulation result meets the requirement;
if the requirements are met, synchronously outputting and storing the modulation result;
if the requirements are not met, generating feedback information, calculating a weight coefficient of the feedback information according to the feedback information and a modulation result, and multiplying the weight coefficient by a modulation parameter to obtain a corrected modulation parameter;
and carrying out secondary modulation on the acquired signals according to the corrected modulation parameters.
Optionally, in the data calibration method according to the embodiment of the present application, data jump degree analysis is performed on collected data of different time nodes to obtain a jump response curve, which specifically includes:
acquiring acquisition data of different time nodes, and extracting characteristics of the acquisition data;
performing difference calculation on the acquired data characteristics of the adjacent time nodes, and calculating the variation rate of the acquired data characteristics of the adjacent time nodes according to the difference;
generating data jump information according to the characteristic change rate of the acquired data;
comparing the data jump information with a preset jump grade range, and calculating the data jump degree;
generating data response information according to the data jump information of the nodes with different acquisition times, and drawing a jump response curve.
As can be seen from the above, the data acquisition instrument with the automatic calibration function and the calibration method thereof provided by the embodiment of the application comprise an acquisition module, a signal modulation module and an isolation module; the acquisition module is electrically connected with the communication module, and is configured to select a matched acquisition channel to acquire data and perform acquisition and transmission of high-speed serial data through the communication module; the signal modulation module is configured to receive the acquisition signal of the acquisition module and modulate the acquisition signal; the isolation module is electrically connected with the power supply module, and is configured to acquire a power supply signal generated by the power supply module, pulse-modulate the power supply signal to generate an alternating electric field, generate an isolated power supply after rectifying and filtering signal conditioning, and generate a corresponding voltage signal according to the isolated power supply; through the modulation to the acquisition signal, make the acquisition signal can be comparatively accurate carry out data acquisition, limit the interval of acquisition data through isolating voltage signal simultaneously, reduce the redundancy of acquisition data.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, the claims, and the drawings, as well as the objects and advantages of the application may be realized and obtained by means of the instrumentalities particularly pointed out in the written description, claims, and drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a data acquisition instrument with an automatic calibration function according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an acquisition module according to an embodiment of the present application;
FIG. 3 is a flowchart of a data calibration method according to an embodiment of the present application;
fig. 4 is a flowchart of a method for modulating an acquisition signal in a data calibration method according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1-2, the present application discloses a data acquisition instrument with an automatic calibration function, comprising: the system comprises an acquisition module, a signal modulation module and an isolation module;
the acquisition module is electrically connected with the communication module, and is configured to select a matched acquisition channel to acquire data and perform acquisition and transmission of high-speed serial data through the communication module;
the signal modulation module is configured to receive the acquisition signal of the acquisition module and modulate the acquisition signal;
the isolation module is electrically connected with the power module, and is configured to acquire a power signal generated by the power module, pulse-modulate the power signal to generate an alternating electric field, generate an isolated power after rectifying and filtering signal conditioning, and generate a corresponding voltage signal according to the isolated power.
It should be noted that, the acquisition module includes a plurality of different types of sensors, acquires the data of different latitudes through different types of sensors to improve the breadth of data acquisition through multisensor fusion, make the characteristic that the data that gathers can all-round reaction data, in addition in the data acquisition process, through carrying out the modulation to the acquisition signal, the original signal of telecommunication in the communication system transmitting end usually has the spectral component that the frequency is very low, generally unsuitable direct transmission in the channel. Thus, it is often desirable to transform an original signal into a high frequency signal in a frequency band suitable for channel transmission, with signal modulation being a process or treatment that causes certain characteristics of one waveform to change from one waveform or signal to another. In radio communication, electromagnetic waves are used as a carrier of information, and the original signal can be subjected to spectrum shifting by modulation, and the modulated signal is called a modulated signal, which carries information and is suitable for transmission in a channel (communication link).
According to the embodiment of the application, the isolation module is electrically connected with the IO interface module, and the IO interface module performs remote acquisition on the data according to the isolated voltage signal and generates corresponding acquisition parameters.
It should be noted that, the IO interface module is electrically connected with a plurality of IO interfaces, where the IO interfaces are ties for information exchange between the host and the controlled object, and the host exchanges data with the external device through the IO interfaces.
According to the embodiment of the application, the acquisition parameters comprise an acquisition rate, an upper limit value of an acquisition signal, a lower limit value of an acquisition signal, an upper limit value of an isolation voltage, a lower limit value of the isolation voltage and power of an isolation power supply.
According to the embodiment of the application, the acquisition modules are electrically connected with a plurality of acquisition channel modules, the acquisition channel modules are grouped, the acquisition channel modules are configured to perform uninterrupted acquisition according to a set acquisition frequency, the acquisition parameters of different acquisition channel modules are different, an acquisition protocol is arranged among the acquisition channel modules, and the acquisition channel modules are grouped and linked according to the acquisition protocol.
It should be noted that, in the data transmission process, the sensors of different types perform data transmission through different acquisition channels, and intelligently determine whether the acquired data can be all transmitted through one acquisition channel by determining the transmission capability of the acquisition channel, if one acquisition channel cannot perform data transmission, two or more acquisition channels are linked to establish a communication protocol for transmission, so as to improve the upper transmission limit of the acquisition channels.
According to the embodiment of the application, the communication module is arranged between the acquisition module and the power supply module, the communication module is configured to configure the acquisition parameters of the acquisition module according to the matched communication protocol, the acquisition module acquires data according to the acquisition parameters, and the acquisition channel module is subjected to self-inspection according to the communication protocol.
It should be noted that, the communication protocol may perform self-checking on the acquisition channel module, and determine whether a great amount of data redundancy occurs in signal transmission between two or more acquisition channels for establishing communication, so as to reduce the repeated data transmission rate and improve the data transmission efficiency.
According to the embodiment of the application, the Flash memory comprises a Flash module, a central processing unit and a Flash module, wherein the Flash module is electrically connected with the central processing unit, the central processing unit is electrically connected with the acquisition module, the Flash module is used for storing data acquired by the acquisition module and generating Flash data, and the central processing unit is configured to store the Flash data in the Flash module and call and read-write the Flash data in the Flash module.
It should be noted that, the Flash module is used for realizing the caching of the collected data, when the collected data needs to be called, the central processing unit is used for intelligent calling, the error data in the collected data is erased, and the accuracy of the collected data is improved.
According to the embodiment of the application, the device further comprises a storage module, wherein the storage module is electrically connected with the central processing unit, the storage module stores the data acquired by the acquisition module, acquires the storage residual space in real time, generates a storage serial number, and sequences and stores the acquired data according to the acquisition time according to the storage serial number.
It should be noted that, the storage module is internally provided with a plurality of storage spaces, the collected data generates a storage serial number according to the collected time, the storage serial number matches the corresponding storage space, in the process of data storage, whether the current collected data volume can be stored in the storage residual space can be judged in advance by judging the storage residual space of the storage module in real time, and when the collected data volume is larger than the storage residual space, the storage space is expanded.
Referring to fig. 3-4, in a second aspect, the present application provides a data calibration method applied to a data acquisition device with an automatic calibration function, comprising the following steps:
s301, acquiring an acquisition environment, and setting corresponding acquisition parameters according to the acquisition environment;
s302, a data acquisition instrument acquires signals according to set acquisition parameters, and modulates the acquired signals to obtain modulated signals;
s303, setting acquisition interval time, and carrying out multi-time node acquisition according to the acquisition interval time according to the modulation signal to obtain acquisition data under a plurality of time nodes;
s304, analyzing the data jump degree of the collected data of different time nodes to obtain a jump response curve;
s305, calculating an error value of the acquired data by analyzing the jump response curve, and correcting the acquired parameters according to the error value.
It should be noted that, the collection environment is the environment that the data acquisition instrument placed, the collection environment includes the meteorological environment of collection region and the barrier and the signal interference state of collection environment, different collection environment needs to dispose different collection parameters, if under the stronger environment of signal interference, need dispose the jam-proof signal and keep apart the interference signal, prevent that the interference signal produces error influence to the collection data, in addition, carry out the data jumping judgement through analyzing the change of collection data under the different time nodes and carry out the analysis data mutation condition, thereby obtain the collection data jumping degree, and calculate the collection error according to jump response region, adjust the collection parameter according to the collection error, can obtain the most accurate data under the assurance current collection parameter.
According to the embodiment of the application, the data acquisition instrument acquires signals according to set acquisition parameters, modulates the acquired signals to obtain modulated signals, and further comprises:
s401, acquiring acquisition signals, extracting signal characteristics, and calculating acquisition signal frequency;
s402, calculating frequency difference information according to the frequency of the acquired signals, generating modulation parameters according to the frequency difference information, adjusting the acquired signals according to the modulation parameters, and generating a modulation result;
s403, judging whether the modulation result meets the requirement;
s404, if the requirements are met, synchronously outputting and storing the modulation result;
and S405, if the requirements are not met, generating feedback information, calculating a weight coefficient of the feedback information according to the feedback information and the modulation result, multiplying the weight coefficient by the modulation parameter to obtain a corrected modulation parameter, and performing secondary modulation on the acquisition signal according to the corrected modulation parameter.
The accuracy of the modulated collected data is judged by analyzing the modulation result, and the synchronous correction adjustment parameters are carried out, so that the collected signal is modulated secondarily, and the error of the modulated collected data is ensured to be smaller.
According to the embodiment of the application, the acquired data of different time nodes are subjected to data jump degree analysis to obtain a jump response curve, which is specifically as follows:
acquiring acquisition data of different time nodes, and extracting acquisition data characteristics;
performing difference calculation on the acquired data characteristics of the adjacent time nodes, and calculating the variation rate of the acquired data characteristics of the adjacent time nodes according to the difference;
generating data jump information according to the characteristic change rate of the acquired data;
comparing the data jump information with a preset jump grade range, and calculating the data jump degree;
generating data response information according to the data jump information of the nodes with different acquisition times, and drawing a jump response curve.
It should be noted that, by performing difference calculation on the collected data of the adjacent time nodes, determining the jump degree of the collected data, determining whether the jump degree exceeds the preset jump level, and drawing a jump response curve according to the data response information, the time node with abrupt change of the data can be observed visually.
According to an embodiment of the present application, further comprising:
acquiring acquisition signals, generating acquisition parameters according to the acquisition signals, and analyzing and acquiring corresponding acquisition data upper limit values according to the acquisition parameters;
matching communication parameters according to the upper limit value of the acquired data, and generating a communication protocol according to the communication parameters;
the communication module transmits the acquired data in real time according to a communication protocol;
calculating the occupancy rate of a communication link according to a communication protocol and acquired data;
if the occupancy rate of the communication link is greater than a preset occupancy threshold value, generating communication link combination information, and carrying out joint transmission on two or more communication links according to the communication link combination information;
if the occupancy rate of the communication link is smaller than the preset occupancy threshold value, judging whether the occupancy rate of the communication link is smaller than the occupancy rate lower limit value, and if so, replacing the communication link.
In order to ensure that the communication link can meet the transmission of the acquired data, the communication link is adjusted in real time by judging the occupancy rate of the communication link or a plurality of communication links are matched for transmission, so that the data transmission efficiency is improved.
According to an embodiment of the present application, further comprising:
acquiring an acquisition voltage value, calculating an acquisition signal under the current acquisition voltage value, and carrying out normalization processing on the acquisition signal to generate an acquisition interval;
calculating an upper limit value and a lower limit value of the acquisition interval, and generating a voltage signal corresponding to the upper limit value of the acquisition interval and a voltage signal corresponding to the lower limit value of the acquisition interval;
comparing the voltage signal corresponding to the upper limit value of the acquisition interval with the voltage signal corresponding to the lower limit value of the acquisition interval with a set voltage signal interval respectively;
judging whether the voltage signals corresponding to the upper limit value of the acquisition interval and the lower limit value of the acquisition interval are in a set voltage signal interval or not;
if the data are all in the same state, data acquisition is carried out according to the acquisition signals;
if the voltage signal corresponding to the upper limit value of the acquisition interval is in the set interval and the voltage signal corresponding to the lower limit value of the acquisition interval is not in the set interval, generating first voltage adjustment information, and adjusting the upper limit voltage of the isolation voltage interval according to the first voltage adjustment information;
and if the voltage signal corresponding to the lower limit value of the acquisition interval is in the set interval and the voltage signal corresponding to the upper limit value of the acquisition interval is not in the set interval, generating second voltage adjustment information, and adjusting the lower limit voltage of the isolation voltage interval according to the second voltage adjustment information.
It should be noted that most of interference signals can be filtered at the acquisition end by setting an optimal acquisition interval, so that acquired signals can be directly used for acquiring needed data, the efficiency of data acquisition is improved, in addition, when the voltage signal of the acquisition interval is deviated or abnormal, the set upper limit voltage and lower limit voltage of the acquisition interval are intelligently adjusted, useful data are prevented from being filtered, and the acquired data keep integral.
According to an embodiment of the present application, further comprising:
acquiring acquisition data of different sources through different types of sensors, extracting characteristics of the acquisition data of different sources, and calculating characteristic similarity;
judging whether the feature similarity is larger than or equal to a preset feature similarity threshold value;
if the data is greater than or equal to the data, classifying the corresponding acquired data into the same type;
if the data is smaller than the preset value, dividing the acquired data into different classes;
and carrying out fusion processing on the collected data of different types to obtain fusion data.
It should be noted that the sensor data fusion by the multi-sensor fusion technique is a data processing procedure, and it is desirable to combine incomplete, defective, mutually complementary sensor information in a suitable manner to obtain a better understanding of the underlying real phenomenon. In a multi-sensor (or multi-source) system, information provided by each information source may have different characteristics, and the characterization accuracy of the acquired data is improved by fusing the different characteristics.
The application discloses a data acquisition instrument with an automatic calibration function and a calibration method thereof, wherein the data acquisition instrument comprises an acquisition module, a signal modulation module and an isolation module; the acquisition module is electrically connected with the communication module, and is configured to select a matched acquisition channel to acquire data and perform acquisition and transmission of high-speed serial data through the communication module; the signal modulation module is configured to receive the acquisition signal of the acquisition module and modulate the acquisition signal; the isolation module is electrically connected with the power supply module, and is configured to acquire a power supply signal generated by the power supply module, pulse-modulate the power supply signal to generate an alternating electric field, generate an isolated power supply after rectifying and filtering signal conditioning, and generate a corresponding voltage signal according to the isolated power supply; through the modulation to the acquisition signal, make the acquisition signal can be comparatively accurate carry out data acquisition, limit the interval of acquisition data through isolating voltage signal simultaneously, reduce the redundancy of acquisition data.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of units is only one logical function division, and there may be other divisions in actual implementation, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the above-described integrated units of the present application may be stored in a readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the embodiments of the present application may be embodied in essence or a part contributing to the prior art in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a removable storage device, ROM, RAM, magnetic or optical disk, or other medium capable of storing program code.
Claims (9)
1. The data calibration method of the data acquisition instrument with the automatic calibration function is characterized by comprising the following steps of:
acquiring an acquisition environment, and setting corresponding acquisition parameters according to the acquisition environment;
the data acquisition instrument acquires signals according to the set acquisition parameters, and modulates the acquired signals to obtain modulated signals;
setting acquisition interval time, and acquiring multiple time nodes according to the modulation signals and the acquisition interval time to obtain acquisition data under a plurality of time nodes;
analyzing the data jump degree of the collected data of different time nodes to obtain a jump response curve;
calculating an error value of the acquired data by analyzing the jump response curve, and correcting the acquired parameters according to the error value;
the data acquisition instrument acquires signals according to set acquisition parameters, modulates the acquisition signals to obtain modulated signals, and further comprises:
acquiring an acquisition signal, extracting signal characteristics, and calculating the frequency of the acquisition signal;
calculating frequency difference information according to the frequency of the acquired signal;
generating modulation parameters according to the frequency difference information, adjusting the acquisition signals according to the modulation parameters, and generating a modulation result;
judging whether the modulation result meets the requirement;
if the requirements are met, synchronously outputting and storing the modulation result;
if the requirements are not met, generating feedback information, calculating a weight coefficient of the feedback information according to the feedback information and a modulation result, and multiplying the weight coefficient by a modulation parameter to obtain a corrected modulation parameter;
and carrying out secondary modulation on the acquired signals according to the corrected modulation parameters.
2. The data calibration method of a data acquisition instrument with an automatic calibration function according to claim 1, wherein the data jump degree analysis is performed on the acquired data of different time nodes to obtain a jump response curve, specifically:
acquiring acquisition data of different time nodes, and extracting characteristics of the acquisition data;
performing difference calculation on the acquired data characteristics of the adjacent time nodes, and calculating the variation rate of the acquired data characteristics of the adjacent time nodes according to the difference;
generating data jump information according to the characteristic change rate of the acquired data;
comparing the data jump information with a preset jump grade range, and calculating the data jump degree;
generating data response information according to the data jump information of the nodes with different acquisition times, and drawing a jump response curve.
3. A data acquisition instrument with an automatic calibration function, using the data calibration method of the data acquisition instrument with an automatic calibration function according to claim 1 or 2, the data acquisition instrument comprising: the system comprises an acquisition module, a signal modulation module and an isolation module; it is characterized in that the method comprises the steps of,
the acquisition module is electrically connected with the communication module, and is configured to select a matched acquisition channel to acquire data and perform acquisition and transmission of high-speed serial data through the communication module;
the signal modulation module is configured to receive the acquisition signal of the acquisition module and modulate the acquisition signal;
the isolation module is electrically connected with the power module, and is configured to acquire a power signal generated by the power module, pulse-modulate the power signal to generate an alternating electric field, generate an isolated power after rectifying and filtering signal conditioning, and generate a corresponding voltage signal according to the isolated power.
4. The data acquisition instrument with the automatic calibration function according to claim 3, wherein the isolation module is electrically connected with an IO interface module, and the IO interface module performs remote acquisition on data according to the isolated voltage signal and generates corresponding acquisition parameters.
5. The data acquisition instrument with automatic calibration function according to claim 4, wherein the acquisition parameters include an acquisition rate, an upper limit value of an acquisition signal, a lower limit value of an acquisition signal, an upper limit value of an isolation voltage, a lower limit value of an isolation voltage, and power of an isolation power supply.
6. The data acquisition instrument with the automatic calibration function according to claim 5, wherein the acquisition modules are electrically connected with a plurality of acquisition channel modules, the plurality of acquisition channel modules are grouped, the acquisition channel modules are configured to perform uninterrupted acquisition according to a set acquisition frequency, acquisition parameters of different acquisition channel modules are different, an acquisition protocol is arranged among the plurality of acquisition channel modules, and the plurality of acquisition channel modules are grouped and linked according to the acquisition protocol.
7. The data acquisition instrument with the automatic calibration function according to claim 6, wherein a communication module is arranged between the acquisition module and the power module, the communication module is configured to configure acquisition parameters of the acquisition module according to a matched communication protocol, the acquisition module acquires data according to the acquisition parameters, and self-test the acquisition channel module according to the communication protocol.
8. The data acquisition instrument with the automatic calibration function according to claim 7, further comprising a central processing unit and a Flash module, wherein the Flash module is electrically connected with the central processing unit, the central processing unit is electrically connected with the acquisition module, the Flash module is used for storing data acquired by the acquisition module and generating Flash data, and the central processing unit is configured to store the Flash data in the Flash module and call and read-write configuration the Flash data in the Flash module.
9. The data acquisition instrument with the automatic calibration function according to claim 8, further comprising a storage module, wherein the storage module is electrically connected with the central processing unit, the storage module stores data acquired by the acquisition module, acquires a storage residual space in real time, and generates a storage serial number, and the storage module sorts and stores the acquired data according to the acquisition time according to the storage serial number.
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