CN115406660A - Distributed data acquisition device and speed cloud picture data processing system - Google Patents
Distributed data acquisition device and speed cloud picture data processing system Download PDFInfo
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
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- G01L13/021—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using deformable tubes
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- G—PHYSICS
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/04—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges in the form of flexible, deformable tubes, e.g. Bourdon gauges
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- G01P5/08—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring variation of an electric variable directly affected by the flow, e.g. by using dynamo-electric effect
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Abstract
The application relates to a distributed data acquisition device and a speed cloud picture data processing system, the application firstly acquires test data such as wind speed, pressure and pressure difference on each test section through the distributed data acquisition device, and then adopts an on-line speed cloud picture drawing module, the speed cloud picture of each test section is displayed according to the position of an anemometer in the test process, the flow field distribution condition of each test section is conveniently known in real time, and preliminary judgment is made on the uniformity of a flow field. In addition, the portable collection box is adopted to replace an independent data collection and gas path collection cabinet, and the layout of the field test system is optimized through the distributed data collection device based on network transmission, so that the flow field test is completed efficiently.
Description
Technical Field
The present disclosure relates to the field of data acquisition technologies, and in particular, to a distributed data acquisition apparatus, a velocity cloud chart data processing system, and a data processing system.
Background
The test bed pneumatic additional resistance test is an important means for reasonably and effectively evaluating the flow field quality of the test bed, and provides a reliable test data source for the engine thrust additional resistance correction method. In an engine intake flow field test, the speed parameters of all the sections are focused, and at present, the speed parameters of all the sections need to be analyzed by using special drawing software after the test is finished, and a speed cloud chart is drawn. Therefore, the conditions of each speed position point cannot be known in real time in the test process, and the test state can be accurately judged.
In addition, the existing field test system is an independent data acquisition and gas path acquisition cabinet, and each parameter required by the test adopts a centralized acquisition method to intensively introduce the anemometer signal wire and the pressure gas pipe into the acquisition cabinet at a fixed position.
Disclosure of Invention
In order to solve the above problems, the application provides a distributed data acquisition device, a speed cloud chart data processing system and a data processing system, which are used for solving the problems that in an additional resistance test of a pneumatic flow field, the condition of a speed cloud chart with a section of 0 cannot be known in real time, a large number of signal lines and pressure gas pipes need to be arranged by adopting a centralized acquisition method, and the field workload and the operation difficulty are increased.
In one aspect of the present application, a distributed data acquisition device is provided, including:
the measuring frame is arranged on a testing section preset in the test workshop;
the data acquisition device is arranged on the measuring frame and used for acquiring at least one signal data of wind speed, pressure or differential pressure;
the system router is arranged in the test room and used for uploading data;
the data acquisition device is connected to the system router in a communication mode and uploads acquired signal data through the system router.
As an optional embodiment of the present application, optionally, the data acquisition device includes a wind speed acquisition module for acquiring a temperature and a wind speed signal of the anemometer; the wind speed acquisition module comprises:
the anemometer is used as equipment for measuring wind speed change and converts the wind speed change into an analog signal;
the signal wire is used for transmitting the analog signal to the wind speed collection box;
and the wind speed acquisition box is used for converting the current signals, transmitting the converted signal data to the system router and finally transmitting the converted signal data to the upper computer.
As an optional embodiment of the present application, optionally, the wind speed collecting module further includes:
the signal conditioning module is arranged in the wind speed collection box and used for converting a current signal into a voltage signal;
the first voltage acquisition board card is arranged in the wind speed acquisition box and used for acquiring the voltage signal and transmitting the voltage signal to the system router through a network cable.
As an optional embodiment of the present application, optionally, the data acquisition device includes a pressure acquisition module for acquiring a pressure signal; the pressure acquisition module comprises:
the pitot tube is used for measuring and acquiring a variation pressure signal of total airflow pressure and static pressure in the test workshop;
the air pipe is used for transmitting the variable pressure signals of the total pressure and the static pressure of the air flow to the pressure acquisition box;
and the pressure acquisition box is used for acquiring pressure signals of each channel through the configured pressure scanning valve, transmitting the signals to the system router through a network cable and finally transmitting the signals to the upper computer.
As an optional embodiment of the present application, optionally, the data acquisition device comprises a differential pressure acquisition module for acquiring a pressure difference; the differential pressure acquisition module comprises:
the pitot tube is used for contact sensing pressure signals at different positions;
the air pipe is used for respectively introducing pressure signals induced by the pitot tubes at different positions into a high-pressure end and a low-pressure end of the differential pressure collecting box;
and the differential pressure acquisition box is used for converting the pressure signal, transmitting the converted signal data to the system router and finally transmitting the converted signal data to the upper computer.
As an optional embodiment of the present application, optionally, the differential pressure acquisition module further comprises:
the differential pressure sensor is arranged in the differential pressure acquisition box and used for converting a pressure signal into an analog signal and sending the analog signal to the signal conditioning module;
the signal conditioning module is arranged in the differential pressure acquisition box and used for converting the current signal into a voltage signal and transmitting the voltage signal to the second voltage acquisition board card;
and the second voltage acquisition board card is arranged in the differential pressure acquisition box and used for acquiring the voltage signal and transmitting the voltage signal to a system router through a network cable.
In another aspect of the present application, a speed cloud image data processing system based on the distributed data acquisition apparatus is provided, including:
the sensor calibration module is used for importing the signal data uploaded by the distributed data acquisition device in batches according to a preset format to obtain calibrated test data;
the data acquisition module is used for acquiring wind speed, pressure and/or differential pressure signal data and displaying the acquired signal data in a preset graphic form;
and the speed cloud picture drawing module is used for displaying the speed cloud pictures of the test sections in real time according to the position of each anemometer, representing the speed distribution condition of the test sections in real time, visually monitoring the state of the anemometer and effectively judging the flow field distribution condition and the speed uniformity of the test sections.
As an optional embodiment of the present application, optionally, the method further includes:
the data playback module is used for storing the test data through a configured data channel, so that the data can be analyzed conveniently after the test is finished;
the data playback module comprises an online mode and an offline mode, wherein the online mode is that data of a corresponding channel is displayed in real time by selecting a data channel to be played back in the test process, so that the state of each channel can be conveniently known; and the off-line mode is to display the data of the corresponding channel in real time by configuring the channel to be played back after the test is finished.
As an optional embodiment of the present application, optionally, the method further includes:
and the report generation module is used for receiving the test data output by the speed cloud picture data processing system and generating a test report according to the test data.
The invention has the technical effects that:
according to the method, firstly, the test data such as wind speed, pressure and pressure difference on each test section are collected through the distributed data acquisition device, then the speed cloud picture module is drawn on line, the speed cloud pictures of each test section are displayed according to the position of the anemometer in the test process, the flow field distribution condition of each test section is conveniently known in real time, and preliminary judgment is made on the uniformity of the flow field. In addition, the portable collection box is adopted to replace an independent data collection and gas path collection cabinet, and the layout of the field test system is optimized through the distributed data collection device based on network transmission, so that the flow field test is completed efficiently.
Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram showing the layout of a distributed data acquisition apparatus according to the present invention;
FIG. 2 is a schematic diagram illustrating an application of the distributed data acquisition apparatus of the present invention;
fig. 3 shows a velocity cloud obtained for the present invention.
Detailed Description
Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.
According to the method, firstly, the test data such as wind speed, pressure and pressure difference on each test section are collected through the distributed data acquisition device, then the speed cloud picture module is drawn on line, the speed cloud pictures of each test section are displayed according to the position of the anemometer in the test process, the flow field distribution condition of each test section is conveniently known in real time, and preliminary judgment is made on the uniformity of the flow field. In addition, the portable collection box is adopted to replace an independent data collection and gas path collection cabinet, and the layout of a field test system is optimized through a distributed data collection device based on network transmission, so that the field test system is beneficial to efficiently completing a flow field test.
Therefore, firstly, a distributed data acquisition device is provided for acquiring test data.
Example 1
The present embodiment provides a hardware system. The distributed data acquisition device adopts a modular design scheme in the whole layout, and portable acquisition boxes aiming at different acquisition parameters are designed on different test sections according to different acquisition tasks of each acquisition module. The system comprises three types of acquisition modules of wind speed, pressure and differential pressure.
As shown in fig. 1, in one aspect of the present application, a distributed data acquisition apparatus is provided, which includes:
the measuring frame is arranged on a testing section preset in the test workshop;
the data acquisition device is arranged on the measuring frame and is used for acquiring at least one signal data of wind speed, pressure or differential pressure;
the system router 4 is arranged in the test room and used for uploading data;
the data acquisition device is connected to the system router 4 in a communication mode, and the acquired signal data are uploaded through the system router 4.
Around the engine in the test shop, it is first necessary to determine a test cross section according to a test plan planned by the tester. As shown in fig. 1, the present embodiment sets "section 0" and "section 1".
And after the test section is determined, arranging a hardware system according to the section position.
The portable collection box is adopted to replace an independent data collection and gas path collection cabinet, a measurement frame is arranged at each test section position, different data collection boxes are configured on the measurement frame and are connected to a system router through network signals, so that each measurement frame, a sensor and a data collection box can form a small independent test network, each independent test network is connected through a network cable, and finally, a distributed collection system of a pneumatic flow field is formed. Different data signals are transmitted to the system router 4 through a set of independent test system, and finally uploaded to an upper computer such as a data processing terminal through the system router. The data processing method provides collected data for the data processing terminal, and facilitates speed cloud picture drawing and analysis of other test data.
The data collection module employed in the present embodiment will be described in detail below.
As an optional embodiment of the present application, optionally, the data collecting device includes a wind speed collecting module for collecting a temperature and a wind speed signal of the anemometer; the wind speed acquisition module comprises:
the anemometer is used as equipment for measuring the wind speed change and converts the wind speed change into an analog signal;
the signal wire is used for transmitting the analog signal to the wind speed collection box;
and the wind speed acquisition box 1 is used for converting the current signals, transmitting the converted signal data to the system router 4 and finally transmitting the converted signal data to an upper computer.
As an optional embodiment of the present application, optionally, the wind speed collecting module further includes:
the signal conditioning module is arranged in the wind speed collection box 1 and used for converting a current signal into a voltage signal;
the first voltage acquisition board card is arranged in the wind speed acquisition box 1 and used for acquiring the voltage signal and transmitting the voltage signal to the system router 4 through a network cable.
The wind speed acquisition module mainly has the function of acquiring temperature and wind speed signals of the anemometer and mainly comprises the anemometer, a wind speed acquisition box and a signal wire. An anemometer is used as equipment for measuring wind speed change, the wind speed change is converted into an analog signal (4 to 20) mA, then the analog signal is transmitted to a wind speed collection box through a signal wire, a signal conditioning module in the wind speed collection box converts a current signal into a voltage signal, then the voltage signal is collected by a voltage collection board card and transmitted to a system router through a network cable, and finally the voltage signal is transmitted to an upper computer.
As an optional embodiment of the present application, optionally, the data acquisition device includes a pressure acquisition module for acquiring a pressure signal; the pressure acquisition module comprises:
the pitot tube is used for measuring and acquiring a variation pressure signal of total airflow pressure and static pressure in the test workshop;
the air pipe is used for transmitting the variable pressure signals of the total pressure and the static pressure of the air flow to the pressure acquisition box;
and the pressure acquisition box 2 is used for acquiring pressure signals of each channel through the configured pressure scanning valve, transmitting the signals to the system router 4 through a network cable and finally transmitting the signals to an upper computer.
The pressure acquisition module mainly has the function of acquiring pressure signals and mainly comprises a pitot tube, a pressure acquisition box and an air pipe. The pitot tube is used as equipment for measuring total pressure and static pressure of air flow in a test workshop, changes of the total pressure and the static pressure are transmitted to the pressure acquisition box through the air pipe, pressure signals of all channels are acquired by the pressure scanning valve in the pressure acquisition box, the signals are transmitted to the system router through the network cable, and finally the signals are transmitted to the upper computer.
As an optional embodiment of the present application, optionally, the data acquisition device comprises a differential pressure acquisition module for acquiring a pressure difference; the differential pressure acquisition module comprises:
the pitot tube is used for contact sensing pressure signals at different positions;
the air pipe is used for respectively introducing pressure signals induced by the pitot tube at different positions into a high-pressure end and a low-pressure end of the differential pressure collecting box;
and the differential pressure acquisition box 3 is used for converting the pressure signal, transmitting the converted signal data to the system router 4 and finally transmitting the converted signal data to the upper computer.
As an optional implementation of the present application, optionally, the differential pressure collection module further includes:
the differential pressure sensor is arranged in the differential pressure acquisition box 3 and used for converting a pressure signal into an analog signal and sending the analog signal to the signal conditioning module;
the signal conditioning module is arranged in the differential pressure acquisition box 3 and used for converting a current signal into a voltage signal and sending the voltage signal to the second voltage acquisition board card;
and the second voltage acquisition board card is arranged in the differential pressure acquisition box 3 and used for acquiring the voltage signal and transmitting the voltage signal to the system router 4 through a network cable.
The main function of the differential pressure acquisition module is to acquire pressure difference, and the differential pressure acquisition module mainly comprises a pitot tube, a differential pressure acquisition box and an air pipe. The pressure of the pitot tube at the corresponding position is respectively introduced into a high-pressure end and a low-pressure end of a differential pressure collecting box through an air pipe, a differential pressure sensor in the differential pressure collecting box converts a pressure signal into an analog signal (4 to 20) mA, a signal conditioning module converts a current signal into a voltage signal, the voltage signal is collected by a voltage collecting board card and is transmitted to a system router through a network cable, and finally the voltage signal is transmitted to an upper computer.
As shown in fig. 1, in order to reduce the workload of arranging the electrical pipelines, different collection modules place different collection boxes on different test sections according to the collection tasks. As shown in figure 1, a wind speed collection box 1 is respectively placed under a test section 0 and a test section 1 measurement frame, a pressure collection box 2 is respectively placed on two sides of the test section 0 measurement frame, and a differential pressure collection box 3 is placed on two sides of the test section 1 measurement frame. Different collection boxes are transmitted to the system router 4 through network signals, so that each collection module forms a small independent test network, and each independent test network is connected through a network cable to finally form the distributed collection system of the pneumatic flow field.
The hardware system is used for collecting signal data such as wind speed, differential pressure and pressure in a test workshop, and particularly provides data support for a speed cloud chart data processing system and data processing software arranged on an upper computer.
It should be noted that, although the above description has been made by taking three types of signal acquisition objects of wind speed, pressure and differential pressure as examples, it will be understood by those skilled in the art that the present disclosure should not be limited thereto. In fact, the user can flexibly set the signal acquisition object according to the actual application scene, as long as the technical function of the application can be realized according to the technical method.
Example 2
In this embodiment, a software system is provided. The speed cloud picture data processing system comprises a sensor calibration module, a data acquisition module, a speed cloud picture drawing module, a data playback module and a report generation module. The speed cloud chart drawing module automatically generates a speed cloud chart according to the wind speed signal and the corresponding installation position in the test process, so that the distribution state of a flow field in a test workshop can be checked in real time, and testers can conveniently and timely make judgment on test conditions.
The speed cloud chart data processing system has the main functions of collecting data of the sensors, processing and analyzing the data and issuing test reports. The distributed data acquisition device comprises a sensor calibration module, a data acquisition module, a speed cloud chart drawing module, a data playback module and a report generation module.
As shown in fig. 2, based on the implementation principle of embodiment 1, another aspect of the present application provides a speed cloud data processing system based on the distributed data acquisition apparatus, including:
the sensor calibration module is used for importing the signal data uploaded by the distributed data acquisition device in batches according to a preset format to obtain calibrated test data;
the data acquisition module is used for acquiring wind speed, pressure and/or differential pressure signal data and displaying the acquired signal data in a preset graphic form;
and the speed cloud picture drawing module is used for displaying the speed cloud pictures of the test sections in real time according to the position of each anemometer, representing the speed distribution condition of the test sections in real time, visually monitoring the state of the anemometer and effectively judging the flow field distribution condition and the speed uniformity of the test sections.
As an optional embodiment of the present application, optionally, the method further includes:
the data playback module is used for storing the test data through a configured data channel, so that the data can be conveniently analyzed after the test is finished;
the data playback module comprises an online mode and an offline mode, wherein the online mode is that data of a corresponding channel is displayed in real time by selecting a data channel to be played back in the test process, so that the state of each channel can be conveniently known; and the off-line mode is used for displaying data of a corresponding channel in real time by configuring the channel to be played back after the test is finished.
As an optional embodiment of the present application, optionally, the method further includes:
and the report generation module is used for receiving the test data output by the speed cloud picture data processing system and generating a test report according to the test data.
And the sensor calibration module calibrates the acquired data according to a standard format to obtain calibrated test data and stores the calibrated test data. The calibrated test data is transmitted to the data acquisition module and displayed on the display.
The sensor calibration module is used for importing calibration data of each sensor in batches according to a preset format before a test, so that test data after the sensors are calibrated during the test are obtained.
The data acquisition module is used for acquiring signals of wind speed, pressure and differential pressure and displaying the acquired signals in software in the forms of oscillograms, tables and the like.
The speed cloud picture drawing module imports test data and can be used for drawing a speed cloud picture. The speed cloud picture drawing module divides a measuring test section into a plurality of rectangles according to the arrangement condition of the measuring points, each rectangle is used as a wind speed measuring point, and the corresponding display frame is placed at the center of the rectangle. Taking the test section of 0 as an example, the test section is divided into 25 squares according to 5 × 5, and each test point is located at the center of the square. During the test, the speed cloud is displayed in real time according to the position of each anemometer, as shown in fig. 3. The speed cloud chart can represent the speed distribution condition of each test section in real time, is used for visually monitoring the state of the anemometer and effectively judging the flow field distribution condition and the speed uniformity of each test section. The application software for creating the speed cloud chart is not limited in this embodiment.
The data playback module is divided into an online mode and an offline mode, wherein the online mode is that in the test process, the channel needing to be played back is selected, the data of the corresponding channel is displayed in real time, and the state of each channel is convenient to know. The off-line mode is that after the test is finished, a channel needing to be played back is configured and displayed in software, so that the data can be analyzed conveniently after the test is finished. The data playback function can be realized by the self-carried function of the system, or set according to the requirement of a tester.
The above test data and the test result output according to the test requirement can be report generated by a report generation module, such as report generation and output of a velocity cloud chart, specifically set according to a preset report output requirement.
It should be apparent to those skilled in the art that all or part of the processes for implementing the modules in the system according to the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer-readable storage medium, and when executed, may include the processes according to the embodiments of the control methods described above. The modules or steps of the invention described above can be implemented by a general purpose computing device, they can be centralized on a single computing device or distributed over a network of multiple computing devices, and they can alternatively be implemented by program code executable by a computing device, so that they can be stored in a storage device and executed by a computing device, or they can be separately fabricated into various integrated circuit modules, or multiple modules or steps thereof can be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by a computer program, which may be stored in a computer readable storage medium and executed to implement the processes of the embodiments of the control methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-only memory (ROM), a Random Access Memory (RAM), a flash memory (FlashMemory), a hard disk (hard disk drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
Example 3
Still further, in another aspect of the present application, a data processing system is provided, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to execute the executable instructions to implement the steps of the distributed data acquisition apparatus.
Specifically, when the executable instruction is executed, the following steps of executing the distributed data acquisition device are implemented, including:
sensor calibration: importing the signal data uploaded by the distributed data acquisition device in batches according to a preset format to obtain calibrated test data;
a data acquisition module: collecting wind speed, pressure and/or differential pressure signal data, and displaying the collected signal data in a preset graphic form;
a speed cloud chart drawing module: and displaying a speed cloud chart of each test section in real time according to the position of each anemometer, representing the speed distribution condition of each test section in real time, and being used for visually monitoring the state of the anemometer and effectively judging the flow field distribution condition and the speed uniformity of each test section.
As an optional embodiment of the present application, optionally, the executing step of the distributed data acquiring apparatus further includes:
a data playback module: the test data is stored through a configured data channel, so that the data can be conveniently analyzed after the test is finished; the data playback module comprises an online mode and an offline mode, wherein the online mode is that data of a corresponding channel is displayed in real time by selecting a data channel to be played back in the test process, so that the state of each channel can be conveniently known; and the off-line mode is to display the data of the corresponding channel in real time by configuring the channel to be played back after the test is finished.
As an optional embodiment of the present application, optionally, the executing step of the distributed data acquiring apparatus further includes:
a report generation module: and receiving test data output by the speed cloud chart data processing system, and generating a test report according to the test data.
Embodiments of the present disclosure provide a data processing system including a processor and a memory for storing processor-executable instructions. Wherein the processor is configured to implement a distributed data acquisition apparatus as described in any one of the preceding paragraphs when executing the executable instructions.
Here, it should be noted that the number of processors may be one or more. Meanwhile, in the data processing system of the embodiment of the present disclosure, an input device and an output device may be further included. The processor, the memory, the input device, and the output device may be connected by a bus, or may be connected by other means, and are not limited specifically herein.
The memory, which is a computer-readable storage medium, may be used to store software programs, computer-executable programs, and various modules, such as: the distributed data acquisition device of the embodiment of the present disclosure corresponds to a program or a module. The processor executes various functional applications and data processing of the data processing system by running software programs or modules stored in the memory.
The input device may be used to receive an input number or signal. Wherein the signal may be a key signal generated in connection with user settings and function control of the device/terminal/server. The output means may comprise a display device such as a display screen.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. The utility model provides a distributed data acquisition device for the experimental data acquisition of test bed flow field test, its characterized in that includes:
the measuring frame is arranged on a testing section preset in the test workshop;
the data acquisition device is arranged on the measuring frame and used for acquiring at least one signal data of wind speed, pressure or differential pressure;
the system router is arranged in the test shop and used for uploading data;
the data acquisition device is connected to the system router in a communication mode and uploads acquired signal data through the system router.
2. The distributed data acquisition device according to claim 1, wherein the data acquisition device comprises a wind speed acquisition module for acquiring a temperature and wind speed signal of an anemometer; the wind speed acquisition module comprises:
the anemometer is used as equipment for measuring wind speed change and converts the wind speed change into an analog signal;
the signal wire is used for transmitting the analog signal to the wind speed collection box;
and the wind speed acquisition box is used for converting the current signals, transmitting the converted signal data to the system router and finally transmitting the converted signal data to the upper computer.
3. The distributed data collection apparatus of claim 2, wherein the wind speed collection module further comprises:
the signal conditioning module is arranged in the wind speed collecting box and used for converting a current signal into a voltage signal;
the first voltage acquisition board card is arranged in the wind speed acquisition box and used for acquiring the voltage signal and transmitting the voltage signal to the system router through a network cable.
4. The distributed data acquisition device of claim 1, wherein the data acquisition device comprises a pressure acquisition module for acquiring a pressure signal; the pressure acquisition module comprises:
the pitot tube is used for measuring and acquiring a variation pressure signal of total airflow pressure and static pressure in the test workshop;
the air pipe is used for transmitting the variable pressure signals of the total pressure and the static pressure of the air flow to the pressure acquisition box;
and the pressure acquisition box is used for acquiring pressure signals of all channels through the configured pressure scanning valves, transmitting the signals to the system router through a network cable and finally transmitting the signals to the upper computer.
5. The distributed data collection apparatus of claim 1, comprising a differential pressure collection module for collecting a pressure differential; the differential pressure acquisition module comprises:
the pitot tube is used for contact sensing pressure signals at different positions;
the air pipe is used for respectively introducing pressure signals induced by the pitot tubes at different positions into a high-pressure end and a low-pressure end of the differential pressure collecting box;
and the differential pressure acquisition box is used for converting the pressure signals, transmitting the converted signal data to the system router and finally transmitting the signal data to the upper computer.
6. The distributed data collection apparatus of claim 5, wherein said differential pressure collection module further comprises:
the differential pressure sensor is arranged in the differential pressure acquisition box and used for converting a pressure signal into an analog signal and sending the analog signal to the signal conditioning module;
the signal conditioning module is arranged in the differential pressure acquisition box and used for converting a current signal into a voltage signal and sending the voltage signal to the second voltage acquisition board card;
and the second voltage acquisition board card is arranged in the differential pressure acquisition box and used for acquiring the voltage signal and transmitting the voltage signal to a system router through a network cable.
7. A velocity cloud data processing system based on the distributed data acquisition apparatus of any one of claims 1 to 6, comprising:
the sensor calibration module is used for importing the signal data uploaded by the distributed data acquisition device in batches according to a preset format to obtain calibrated test data;
the data acquisition module is used for acquiring wind speed, pressure and/or differential pressure signal data and displaying the acquired signal data in a preset graphic form;
and the speed cloud picture drawing module is used for displaying the speed cloud pictures of the test sections in real time according to the position of each anemometer, representing the speed distribution condition of the test sections in real time, visually monitoring the state of the anemometer and effectively judging the flow field distribution condition and the speed uniformity of the test sections.
8. The velocity cloud data processing system of claim 7, further comprising:
the data playback module is used for storing the test data through a configured data channel, so that the data can be conveniently analyzed after the test is finished;
the data playback module comprises an online mode and an offline mode, wherein the online mode is that data of a corresponding channel is displayed in real time by selecting a data channel to be played back in the test process, so that the state of each channel can be conveniently known; and the off-line mode is to display the data of the corresponding channel in real time by configuring the channel to be played back after the test is finished.
9. The velocity cloud data processing system of claim 7, further comprising:
and the report generation module is used for receiving the test data output by the speed cloud picture data processing system and generating a test report according to the test data.
10. A data processing system, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to carry out the executable instructions to carry out the steps of carrying out the distributed data acquisition apparatus of any one of claims 7 to 9.
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