CN111833703A - A remote controllable experimental platform for the constant flow of incompressible fluids - Google Patents

Abstract

The invention discloses a constant flow law experiment platform for an incompressible fluid, which can be remotely controlled. The system comprises a computer-controlled incompressible fluid constant flow law experimental device, a service manager and a user terminal, wherein the service manager is respectively connected with the computer-controlled incompressible fluid constant flow law experimental device and the user terminal through the internet; the PLC control system can control the opening and closing of the valve or adjust the opening, and the pressure transmitter combined with the PLC control system automatically monitors related data with the electromagnetic flowmeter; the camera is used for real-time monitoring of real running conditions of experiments in a computer and in a remote mode and real-time data of the piezometric tube. The user inputs experiment related data in the mobile portable equipment or the computer through remote control, and observes the experiment process and the data in real time. The invention can solve the problem that the simulation experiment lacks real experience, and the like, achieves the teaching purpose by sharing the remote experiment, and realizes the sharing education concept.

Description

A remote controllable experimental platform for the constant flow of incompressible fluids

technical field

The invention relates to the technical fields of education, teaching and industrial control, in particular to a remote controllable experimental platform for the law of constant flow of incompressible fluids.

Background technique

At present, water supply and drainage science and engineering majors in domestic colleges and universities generally need to set up relevant professional experiments, including experiments on the law of constant flow of incompressible fluids. The experimental equipment at this stage generally includes a water pump, a self-circulating water supply device, a test bench, a thyristor stepless governor, a water level control valve, a constant pressure water tank, a nozzle, a water collecting tank, a pressure measuring tube with a piston, a piston and a wing. The impact plate of the sheet, the upper return water pipe. During the operation of the hydraulic experiment, the experimental result data is obtained through the camera, solenoid valve, pressure transmitter and electromagnetic flowmeter installed on the equipment.

At this stage, the domestic incompressible fluid constant flow law experimental devices can be classified into two types: one is the hands-on experimental operation by students. Since the actual operation must be carried out according to the experimental instructions, the influence of various factors must be excluded, and there are inevitable systematic errors in the experiment. In order to obtain accurate experimental results, multiple experiments are required, but in actual operation, it is difficult to carry out Multiple experiments are required to obtain accurate experimental results; and in actual operation, before recording each data, it is necessary to manually observe the value of the instrument, and the valid data can be obtained after it is stable. As a result of the above, colleges and universities that have purchased experimental equipment can only provide experimental opportunities for local students, the experimental resources are not fully utilized, and the experimental process of local students has shortcomings such as inconvenience and difficulty in obtaining accurate experimental data. Relevant experiments cannot be carried out in the region, and students lack practical opportunities to master the experimental operation ability and obtain practical and intuitive experimental data.

The second is the Internet-based remote experiment scheme, which mainly uses a software simulation experiment platform to conduct online simulation or virtual experiments. The experimental phenomena and data of this scheme are ideally calculated by software, and the experiment is completely virtualized by software. The environment does not have the authenticity that the experimental process should have. The experimental process is solidified and cannot simulate various interference factors and errors existing in the actual situation. Although the experiment is easy to understand the experimental process, the experimental effect is difficult to compare with the real experiment, which has a great impact on students' innovative ability. It is not conducive to the cultivation of awareness of problem detection.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the above-mentioned defects in the prior art, and to provide a computer-controlled experimental device for the constant flow of incompressible fluids, the Internet and user terminals and other related equipment, which can be used to test the constant flow of incompressible fluids. The devices are combined into an integrated shared system, allowing users to conduct experiments on the constant flow of incompressible fluids under real experimental environments and conditions.

The remote controllable incompressible fluid constant flow volume law experimental platform involved in the present invention includes one or more computer-controlled incompressible fluid constant flow volume law experimental devices, a service manager and one or more user terminals.

The computer-controlled incompressible fluid constant flow quantity law experimental device and the service manager are connected through the Internet (wired or wireless); the service manager and the user terminal are connected through the Internet (wired or wireless).

The computer-controlled incompressible fluid constant flow quantity law experimental device includes: electromagnetic flowmeter, pressure transmitter, camera, check valve, electromagnetic valve, pressure measuring pipe with piston, self-circulating water supply device, lower return water pipe, SCR stepless governor, constant pressure water tank, water pump, nozzle, test bench, water level control valve, shock plate with piston and vanes, upper return water pipe, water collection tank, touch screen computer and PLC (programmable logic controller) to control the system.

The water collecting tank, the water level control valve and the constant pressure water tank are all connected with the upper return water pipe, the lower return water pipe and the water pump. When the water pump is turned on, the solenoid valve will inject water into the constant pressure water tank. water level height. The electromagnetic flowmeter and pressure transmitter transmit signals to the PLC control system to record the relevant flow and pressure. Calculate the relevant parameters of the experiment and prove the momentum theorem. The test is over.

The PLC control system controls the signal input and output of the touch screen computer, the opening and closing of the water pump and the camera; the PLC control system collects the opening of the solenoid valve; collects the online monitoring of the pressure transmitter, electromagnetic flowmeter, camera, etc. through the signal line The touch screen computer is used to receive the online monitoring data transmitted by the PLC control system and display the operation interface, so as to realize the touch screen control operation device; the camera is used for the computer to observe the experimental phenomenon, and the focal length of the lens can be adjusted through software control to observe some inconveniences Get close to the observed experimental phenomenon while recording some real-time data. The electromagnetic flowmeter monitors the flow on-line and feeds back the data to the PLC control system, which is convenient for error analysis with the data obtained from the experimental observation.

The service manager includes: an industrial computer, an image acquisition device, a processing module, and a storage module;

Further, the above-mentioned remote controllable incompressible fluid constant flow volume law experimental platform, the service manager includes a management platform, and the management platform includes a computer-controlled incompressible fluid constant flow volume law experimental device login interface and The user logs in and selects a computer-controlled incompressible fluid constant flow quantity law experimental device to carry out related experiments. ) connection; the service manager is connected with the user terminal through the Internet (wired or wireless).

The user terminal includes a computer or a mobile phone; the mobile phone or computer is connected to the operation platform of the service manager through the Internet (wired or wireless), and the selected computer-controlled incompressible fluid constant flow quantity law experimental device is remotely controlled to complete Incompressible fluid constant flow volume law experiment. The execution equipment, the data acquisition equipment and the image acquisition equipment are respectively connected with the central control computer through wired communication.

Beneficial effects:

The remote controllable experimental platform for the law of constant flow of incompressible fluids provided by the present invention relies on the Internet and related experimental instruments such as sensors to combine experiments related to the law of constant flow of incompressible fluids into a shared system. Experiments related to the law of constant flow of incompressible fluids are carried out under the system, and the required measurement parameters such as flow, pressure, and flow rate of each measuring point are displayed on the user end in real time. On the premise of ensuring the authenticity and operability of the experiment, the results can be output. Each sensor and its camera can display the experimental process and data on the user terminal in real time. The user can input the experiment on a mobile portable device or computer through remote control. Relevant data, and observe the experimental process and data in real time, and export relevant experimental data.

To a certain extent, the invention solves the relevant problems existing in colleges and universities to set up experiments on the law of constant flow of incompressible fluids, and makes reasonable use of resources to serve the students majoring in water supply and drainage science and engineering in colleges and universities that lack the experimental conditions in China. Remote experiment to achieve teaching purpose and realize shared education concept.

For example, in the face of the sudden 2020 new coronavirus, which has a huge impact on the education industry, some theoretical course teachers can teach students through online platforms, but experiments related to practical aspects cannot be realized. It can solve the problem of lack of real experience in simulation experiments, etc. Through sharing remote experiments, it can achieve teaching purposes and realize the concept of shared education.

Description of drawings

FIG. 1 is a schematic diagram of the remote controllable incompressible fluid constant flow quantity law experimental platform of the present invention.

FIG. 2 is a schematic structural diagram of an experimental device for the constant flow of incompressible fluids that can be controlled by a computer according to the present invention.

Marked in the figure: 1-electromagnetic flowmeter; 2-pressure transmitter; 3-camera; 4-check valve; 5-solenoid valve; 6-pressure measuring pipe with piston; 7-self-circulating water supply device; 8-down Return pipe; 9-SCR stepless governor; 10-constant pressure water tank; 11-water pump; 12-nozzle; 13-test bench; 14-water level regulating valve; 15-impact with piston and vane Flat panel; 16-upper return pipe; 17-water collection tank; 18-touch screen computer; 19-PLC control system.

3 is a schematic diagram of the computer-controlled experimental device for the constant flow of incompressible fluids in accordance with the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention are described clearly and completely below. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example:

FIG. 1 is a schematic diagram of the remote controllable incompressible fluid constant flow quantity law experimental platform of the present invention. In this embodiment, a remote controllable incompressible fluid constant flow volume law experimental platform includes: 3 remote controllable incompressible fluid constant flow volume law experimental platforms, a service manager, and 30 user terminals.

The remote controllable incompressible fluid constant flow quantity law experimental device and the service manager are connected through the Internet (wired or wireless); the service manager and the user terminal are connected through the Internet (wired or wireless).

The computer-controlled experimental platform for the constant flow of incompressible fluids provided by the present invention is in the form of a computer client or a mobile terminal.

The computer-controlled incompressible fluid constant flow law experimental platform provided by the present invention uses the keyboard or touch screen provided on the user terminal to enter the operation platform in the management server, and then controls the selected computer-controlled incompressible fluid. The fluid constant flow volume law experimental device completes the remote experimental operation, obtains real-time experimental images and data, and transmits it to the user terminal through the management server to complete an incompressible fluid constant flow volume law experiment.

The remotely controllable incompressible fluid constant flow quantity law experimental platform can simultaneously carry out teaching experiments on the incompressible fluid constant flow quantity law experimental platform. In practical applications, the remote experimental system can have multiple computer-controlled experimental platforms for the constant flow of incompressible fluids, which are managed uniformly by the management server.

Figure 2 is a schematic structural diagram of the computer-controlled incompressible fluid constant flow law experimental device of the present invention; as shown in Figure 2, the computer-controlled incompressible fluid constant flow law experimental device includes: an electromagnetic flowmeter 1, a pressure Conveyor 2, camera 3, check valve 4, solenoid valve 5, pressure measuring pipe with piston 6, self-circulating water supply 7, lower return water pipe 8, thyristor stepless governor 9, constant pressure water tank 10, Water pump 11 , nozzle 12 , test bench 13 , water level regulating valve 14 , impact plate 15 with piston and fins, upper return water pipe 16 , water collecting tank 17 , touch screen computer 18 and PLC control system 19 .

The water collecting tank 17, the water level control valve 14 and the constant pressure water tank 10 are all connected with the upper return water pipe 16, the lower return water pipe 8 and the water pump 11. When the water pump 11 is turned on, the solenoid valve 5 injects water into the constant pressure water tank 10, and after the water pressure is stabilized. , record the water level of the pressure measuring tube 6 with the piston through the camera 3. The electromagnetic flowmeter 1 and the pressure transmitter 2 transmit signals to the PLC control system 19 to record the relevant flow and pressure. Calculate the relevant parameters of the experiment and prove the momentum theorem. The test is over.

In the computer-controlled experimental device for the constant flow of incompressible fluids, the water inlet pipeline is provided with: a water inlet solenoid valve 5; Flowmeter 1, pressure transmitter 2.

The PLC control system 19 controls the signal input and output of the touch screen computer 18, the opening and closing of the water pump 11 and the camera 3; the PLC control system 19 collects the opening degree of the solenoid valve 5; collects the pressure transmitter 2, the electromagnetic flow rate through the signal line The online monitoring data of meter 1, camera 3, etc.; the touch screen computer 18 is used to receive the online monitoring data transmitted by the PLC control system 19 and display the operation interface to realize the touch screen control operation device; the camera 3 is used for the computer to observe the experimental phenomenon , the focal length of the lens can be adjusted through software control to observe some experimental phenomena that are inconvenient for close observation, and some real-time data can be recorded at the same time. The electromagnetic flowmeter 1 monitors the flow rate online and feeds back the data to the PLC control system 19, so as to facilitate error analysis with the experimentally observed data.

The remote controllable incompressible fluid constant flow quantity law experimental platform provided by the present invention, relying on Internet technology, combines multiple computer-controlled incompressible fluid constant flow quantity law experimental devices into a shared system, which can be used in a real experimental environment and Under the condition of constant flow quantity law experiment of incompressible fluid, the measurement parameters such as the flow rate and pressure of the pump are displayed in real time on the user terminal, and the experimental phenomenon and related data are viewed through the camera. Under the premise of ensuring the authenticity and operability of the experiment, the results can be output and curves can be drawn. Each sensor and its camera can display the experimental process and data on the user terminal in real time, and the user can input the input on the mobile portable device through remote control. Relevant data before the experiment, and observe the experimental process and data in real time, and export the relevant experimental data to verify the accuracy of the data and related laws.

The remote controllable incompressible fluid constant flow quantity law experimental platform can simultaneously accommodate multiple user terminals to access the management server through the network, each user terminal exists independently, and different students conduct experiments on different user terminals. The user terminal may be a computer client or a mobile terminal such as a mobile phone, and the specific form is not limited.

In order to accurately measure various parameters on the upper return pipe 16 , the upper return pipe 16 is provided with: a pressure transmitter 2 , a solenoid valve 5 , and an electromagnetic flowmeter 1 .

The pressure transmitter 2 is installed on the upper return pipe 16, and the solenoid valve 5 is installed at the water outlet of the water pump 11 to realize remote control of the water flow; the electromagnetic flowmeter 1 is installed on the upper return pipe 16, and is collected through the signal line. related data;

The remote controllable incompressible fluid constant flow quantity law experimental platform includes a constant pressure water tank 10 and a water collection tank 17 placed on the test bench 13; the camera 3 is installed on the upper return pipe 16 to intuitively see the equilibrium state. jet phenomenon.

3 is a schematic diagram of the computer-controlled experimental device for the constant flow of incompressible fluids in accordance with the present invention.

The service manager includes: an industrial computer, an image acquisition device, a processing module, and a storage module.

Further, the above-mentioned remote controllable incompressible fluid constant flow volume law experimental platform, the service manager includes a management platform, and the management platform includes a computer-controlled incompressible fluid constant flow volume law experimental device login interface and The user logs in and selects a computer-controlled incompressible fluid constant flow quantity law experimental device to carry out related experiments. ) connection; the service manager is connected with the user terminal through the Internet (wired or wireless).

Further, in the above-mentioned experimental platform for the law of constant flow of incompressible fluids that can be remotely controlled, the user terminal includes a computer or a mobile phone; the mobile phone or computer is connected to the operating platform of the service manager through the Internet (wired or wireless), Remotely control the selected computer-controlled incompressible fluid constant flow law experiment device to complete the incompressible fluid constant flow law experiment. The execution equipment, the data acquisition equipment and the image acquisition equipment are respectively connected with the central control computer through wired communication.

The data acquisition equipment includes flow: measured by the electromagnetic flowmeter 1 on the upper return water pipeline 16 ; pressure: measured by the pressure transmitter 2 on the upper return water pipeline 16 .

The image acquisition device includes, but is not limited to, a camera. The camera 3 is fixed on a computer-controlled incompressible fluid constant flow law experimental platform operating platform bracket, connected with the PLC control system 19, and then connected with the touch screen computer 18, Display and control (far or close) on the touch screen computer 18 . Since the students are far away from the experimental device, they cannot go to the scene to observe the operation of the equipment. The remote students can observe the operation of the equipment and related experimental phenomena or experimental results through the camera 3.

Using the mode of "hardware equipment entity-real experimental scene-remote operation panel", according to the experimental control information input by students in the user terminal, the computer-controlled incompressible fluid constant flow law experimental device can be remotely controlled to carry out relevant professional experiments. Students can conduct experiments anytime and anywhere through the network, and do not need to go to a fixed laboratory to conduct experiments, which realizes network teaching in different places, and can greatly promote the improvement of students' innovative ability and comprehensive ability. At the same time, the experimental data generated in the experiment is the real data generated by the remote experimental device, not the software simulation data, which provides convenience for the students and can also mobilize the enthusiasm of the students to do the experiment. In addition, because the experimental hardware is set on the remote experimental equipment, the hardware requirements of the user terminal are not high, and the students can complete the experiment on the ordinary computer or even the mobile terminal. The invention realizes the social sharing of experimental resources, makes up for the deficiency of the practice link of shared education, and fully highlights the new development of shared education in the current Internet environment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (4)

1. A remotely manipulable incompressible fluid constant flow law experiment platform, the remotely manipulable incompressible fluid constant flow law experiment platform comprising: the system comprises 1 or more computer-controllable incompressible fluid constant flow law experimental devices, a service manager and 1 or more user terminals;

the computer-controllable incompressible fluid constant flow law experimental device comprises: the device comprises an electromagnetic flowmeter (1), a pressure transmitter (2), a camera (3), a check valve (4), an electromagnetic valve (5), a pressure measuring pipe (6) with a piston, a self-circulation water feeder (7), a lower water return pipe (8), a controllable silicon stepless speed regulator (9), a constant-pressure water tank (10), a water pump (11), a nozzle (12), a test bed (13), a water level regulating valve (14), an anti-impact flat plate (15) with a piston and a fin, an upper water return pipe (16), a water collecting tank (17), a touch screen computer (18) and a PLC control system (19);

in the computer-controllable incompressible fluid constant flow law experimental device: the water collecting tank (17), the water level control valve (14) and the constant-pressure water tank (10) are all connected with the upper water return pipe (16), the lower water return pipe (8) and the water pump (11), the water pump (11) is started to fill water into the constant-pressure water tank (10) through the electromagnetic valve (5), and after the water pressure is stable, the water level height of the pressure measuring pipe (6) with the piston is recorded through the camera (3); signals are transmitted to a PLC control system (19) by an electromagnetic flowmeter (1) and a pressure transmitter (2), relevant flow and pressure are recorded, relevant parameters of an experiment are calculated, the momentum theorem is proved, and the experiment is finished;

a water inlet electromagnetic valve (5) is arranged on the water inlet pipeline; the experimental incompressible fluid pipe section is provided with: the pressure measuring tube (6) with a piston, the electromagnetic flowmeter (1) and the pressure transmitter (2);

the PLC control system (19) controls the signal input and output of the touch screen computer (18) and the opening and closing of the water pump (11) and the camera (3); the PLC control system (19) acquires the opening degree of the electromagnetic valve (5); the online monitoring data of the pressure transmitter (2), the electromagnetic flowmeter (1), the camera (3) and the like are collected through a signal line;

the touch screen computer (18) is used for receiving online monitoring data transmitted by the PLC control system (19) and displaying an operation interface, so that a touch screen control operation device is realized;

the camera (3) is used for observing experimental phenomena through a computer, observing some experimental phenomena which are inconvenient to be observed by adjusting the focal length of the lens through software control, and simultaneously recording some real-time data;

the electromagnetic flowmeter (1) monitors flow on line and feeds data back to the PLC control system (19), so that error analysis can be conveniently carried out on the data obtained by experimental observation.

2. The remotely controllable incompressible fluid constant flow law experiment platform according to claim 1, wherein the service manager comprises a management platform, the management platform comprises a login interface of the incompressible fluid constant flow law experiment device controllable by a computer and an interface for a user to login and select a certain incompressible fluid constant flow law experiment device controllable by a computer to perform related experiments, and the service manager is connected with the incompressible fluid constant flow law experiment device controllable by a computer through the internet in a wired or wireless manner; the service manager is connected with the user terminal through the internet in a wired or wireless mode.

3. The remotely controllable incompressible fluid constant flow law experimental platform according to claim 1, wherein the user terminal comprises a computer or a mobile phone; the mobile phone or the computer is connected with an operation platform of the service manager in a wired or wireless mode through the internet, and the selected computer-controlled experiment device for the incompressible fluid constant flow law is remotely controlled to complete the experiment of the incompressible fluid constant flow law.

4. The experimental platform for the law of constant flow of incompressible fluid capable of being remotely controlled according to claim 1, characterized in that the piezometric tube (6) with piston is required to record the depth of the centroid of the piston, where the camera (3) is installed; an electromagnetic flowmeter (1) is arranged at the upper loop pipe (16), the measured data are transmitted to a PLC control system (19) through collection, the data are reflected on a touch screen computer (18), and then the constant flow theorem is verified through the data.

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