CN111862738A - Remote controllable local drag loss experimental platform - Google Patents

Abstract

The invention discloses a remote controllable local resistance loss experiment platform. Including: a computer-controlled local resistance loss experimental device, a service manager and a user terminal; the computer-controlled local resistance loss experimental device and the service manager are connected through the Internet; the service manager and the user terminal are connected through the Internet; The computer-controlled local resistance loss experimental device includes: touch screen computer, PLC control system, water pump, return water pipeline, water inlet pipeline, water inlet gate valve, water inlet solenoid valve, overflow plate, water stabilization orifice, water tank, local resistance Loss of experimental pipelines, pressure gauges, pressure measuring tubes, pressure transmitters, electromagnetic flowmeters, outlet gate valves, outlet solenoid valves, test benches and cameras. The invention solves the relevant problems existing in the establishment of local resistance loss experiments in colleges and universities, and can solve the problem of lack of real experience in simulation experiments.

Description

Remote controllable local drag loss experimental platform

technical field

The invention relates to the technical fields of education, teaching and industrial control, in particular to a remote controllable local resistance loss experimental platform.

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 local resistance loss experiments. At this stage, the experimental equipment generally includes power meter, motor power socket, photoelectric tachometer, electric motor, water stabilization pressure tank, power meter switch, water pipeline, water pump, flow control valve, pressure gauge, pressure sensor, Venturi flowmeter, accumulator Water tank, water inlet valve, pressure vacuum gauge, differential pressure electric measuring instrument, electric measuring instrument voltage stabilizer, pressure gauge voltage stabilizer, water inlet pipeline, etc. During the operation of the hydraulic experiment, the experimental result data is obtained through the electromagnetic flowmeter, pressure transmitter and liquid level controller installed on the equipment.

At this stage, the domestic local resistance loss experimental platform 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 sharing system that combines the local resistance loss experimental platform into one relying on a computer-controlled local resistance loss experimental device, the Internet and related equipment such as user terminals, etc., Users conduct local resistance loss experiments under real experimental environments and conditions.

A remote controllable local resistance loss experimental platform includes: one or more computer-controlled local resistance loss experimental devices, a service manager and one or more user terminals.

The computer-controlled local resistance loss experimental device and the service manager are connected through the Internet; the service manager and the user terminal are connected through the Internet (wired or wireless).

The computer-controlled local resistance loss experimental device includes: a touch-screen computer, a PLC control system, a water pump, a water return pipeline, a water inlet pipeline, a water inlet gate valve, a water inlet solenoid valve, an overflow plate, a water stabilization orifice, a water tank, Local resistance loss experimental pipeline, pressure gauge, pressure measuring tube, pressure transmitter, electromagnetic flowmeter, outlet gate valve, outlet solenoid valve, test bench and camera.

There are two return water pipelines between the water tank and the water pump, and one water inlet pipeline. When the water pump is turned on, water is injected into the water tank from the water inlet solenoid valve, so that the water tank overflows. After the water level is reached, the water flows into the local resistance loss test pipeline. The control system controls the water flow of the water pump, so that the liquid level of the pressure measuring tube changes, and then the pressure transmitter obtains the measurement data of 6 pressure measuring tubes and transmits it to the touch screen computer. At the same time, the electromagnetic flowmeter also transmits the measurement data to the touch screen computer.

Further, in the above-mentioned remote controllable local resistance loss experimental platform, the service manager includes: an industrial computer, an image acquisition device, a processing module, and a storage module.

The data acquisition device is wirelessly connected to the industrial computer; the image acquisition device is connected to the industrial computer through a data bus.

The industrial computer transmits the information obtained by the data acquisition device and the image acquisition device to the processing module in a wireless manner.

The processing module is connected with the storage module; the storage module is used for storing the data processed by the data processing module and the data sent by the terminal.

Further, in the above-mentioned remote controllable local resistance loss experimental platform, the user terminal includes a display screen and an operating device.

The display screen and the operating device are respectively connected with the processing module through wireless communication interfaces.

Further, in the above-mentioned computer-controlled local resistance loss experimental device, the water inlet pipeline is provided with: a water inlet gate valve and a water inlet solenoid valve.

The water inlet gate valve and the water inlet solenoid valve are installed in the pipeline between the water inlet of the water pump and the water outlet at the bottom of the water tank.

Further, in the above-mentioned computer-controlled local resistance loss experimental device, the water return pipeline is provided with a water outlet gate valve and a water outlet solenoid valve.

The water outlet gate valve and the water outlet solenoid valve are installed in the pipeline between the water pump and the end of the local resistance loss experimental pipeline.

Beneficial effects:

The remote controllable local resistance loss experimental platform provided by the present invention relies on the Internet, sensors and other related experimental instruments, combines local resistance loss related experiments into a shared system, and conducts local resistance loss related experiments under real experimental environment and conditions. The required measurement parameters such as the flow rate of the pump and the head difference of the pressure measuring tube are displayed in real time on the user side. 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. Pre-relevant data, 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 setting up local resistance loss experiments in colleges and universities, and rationally utilizes 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. The purpose of teaching is to realize the concept of shared education.

Description of drawings

FIG. 1 is a schematic diagram of the remote controllable local resistance loss experimental platform of the present invention.

FIG. 2 is a schematic structural diagram of a computer-controlled local resistance loss experimental device of the present invention.

Marked in the figure: 1-touch screen computer; 2-PLC control system; 3-water pump; 4-return water pipeline; 5-water inlet pipeline; 6-water inlet gate valve; 7-water inlet solenoid valve; 8-overflow plate; 9-water stabilization orifice; 10-water tank; 11-local resistance loss experimental pipeline; 12-pressure gauge; 13-pressure measuring pipe; 14-pressure transmitter; 15-electromagnetic flowmeter; 16-outlet gate valve; 17-outlet solenoid valve; 18-experimental bench; 19-camera.

FIG. 3 is a schematic diagram of a computer-controlled local resistance loss experimental device of 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 local resistance loss experimental platform of the present invention. A remote controllable local resistance loss experimental platform provided by this embodiment includes: 3 computer controllable local resistance loss experimental platforms, a service manager, and 30 user terminals.

The computer-controlled local resistance loss experimental device and the service manager are wirelessly connected through the Internet; the service manager and the user terminal are wirelessly connected through the Internet.

In the remote controllable local resistance loss experimental platform provided by the present invention, the user terminal is in the form of a computer client or a mobile terminal, and the management server can be connected to at least one user terminal.

The remote controllable local resistance loss 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 local resistance loss experimental platform, Complete the remote experimental operation, obtain real-time experimental images and data, and transmit them to the user terminal through the management server to complete a local resistance loss experiment.

The remote controllable local resistance loss experimental platform can simultaneously carry out teaching experiments of the local resistance loss experimental platform. In practical applications, the remote experimental system can have multiple computer-controlled local resistance loss experimental platforms, which are managed uniformly by the management server.

Figure 2 is a schematic structural diagram of a computer-controlled local resistance loss experimental device of the present invention. As shown in Figure 2, the computer-controlled local resistance loss experimental device includes: a touch screen computer 1, a PLC control system 2, a water pump 3, a return pipe Road 4, water inlet pipeline 5, water inlet gate valve 6, water inlet solenoid valve 7, overflow plate 8, water stabilization orifice plate 9, water tank 10, local resistance loss experimental pipeline 11, pressure gauge 12, pressure measuring tube 13 , pressure transmitter 14 , electromagnetic flowmeter 15 , outlet gate valve 16 , outlet solenoid valve 17 , test bench 18 and camera 19 .

There are two return water pipelines 4 and one water inlet pipeline 5 between the water tank 10 and the water pump 3. When the water pump 3 is turned on, water is injected into the water tank 10 by the water inlet solenoid valve 7, so that the water tank 10 overflows. After the water level is reached, the water flows into the local area. The resistance loss experimental pipeline 11 controls the water flow rate of the water pump 3 through the PLC control system 2, so that the liquid level of the pressure measuring tube 13 changes, and then the pressure transmitter 14 obtains the measurement data of the six pressure measuring tubes 13 and transmits it to the touch screen computer 1, At the same time, the electromagnetic flowmeter 15 also transmits the measurement data to the touch screen computer 1 .

The remote controllable local resistance loss experimental platform provided by the present invention, relying on the Internet technology, combines multiple computer controllable local resistance loss experimental devices into a shared system, and conducts local resistance loss experiments under the real experimental environment and conditions, The required measurement parameters such as the flow rate of the water pump 3 and the head difference of the pressure measuring pipe 13 are displayed in real time on the user end. The experimental phenomenon is viewed through the camera 19 . On the premise of ensuring the authenticity and operability of the experiment, the results can be output, curve drawing, etc., each sensor and its camera 19 can display the experimental process and data on the user terminal in real time, and the user can remotely control the mobile portable device. Input the relevant data before the experiment, observe the experimental process and data in real time, and export the relevant experimental data.

The remote experiment system can accommodate multiple user terminals to access the management server through the network at the same time, 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 water inlet pipeline, the water inlet pipeline 5 is provided with: a water inlet gate valve 6 and a water inlet solenoid valve 7 .

The water inlet gate valve 6 and the water inlet solenoid valve 7 are installed in the pipeline between the water inlet of the water pump 3 and the water outlet at the bottom of the water tank 10 .

In order to accurately measure various parameters on the return water pipeline 4 , the return water pipeline 4 is provided with a water outlet gate valve 16 and a water outlet solenoid valve 17 .

The outlet gate valve 16 and the outlet solenoid valve 17 are installed in the pipeline between the water pump 3 and the end of the local resistance loss test pipeline 11 .

FIG. 3 is a schematic diagram of a computer-controlled local resistance loss experimental device of the present invention.

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

The data acquisition device is wirelessly connected to the industrial computer; the image acquisition device is connected to the industrial computer through a data bus.

The industrial computer transmits the information obtained by the data acquisition device and the image acquisition device to the processing module in a wireless manner.

The processing module is connected with the storage module; the storage module is used for storing the data processed by the data processing module and the data sent by the terminal.

The user terminal includes a display screen and an operating device.

The display screen and the operating device are respectively connected with the processing module through wireless communication interfaces.

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 (pumping amount): electromagnetic flowmeter 15 ; pressure measuring pipe 13 head difference: pressure transmitter 14 .

The image acquisition equipment includes but is not limited to a camera 19, the camera 19 is fixed on the operating platform bracket of the local resistance loss experimental device that can be controlled by a computer, is connected with the PLC control system 2, and then is connected with the touch screen computer 1, on the touch screen computer 1. Display and control (far or close-up) on the display. Since the students are far away from the experimental device and 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 19 .

Using the mode of "hardware entity-real experimental scene-remote operation panel", the local resistance loss experimental platform is remotely controlled according to the experimental control information input by the students in the user terminal, and relevant professional experiments are carried out. 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 (5)

1. A remotely controllable local drag loss experiment platform, the remotely controllable local drag loss experiment platform comprising: 1 or more computer-operable local resistance loss experimental devices, a service manager and 1 or more user terminals;

the computer-controlled local resistance loss experimental device comprises: the device comprises a touch screen computer (1), a PLC control system (2), a water pump (3), a water return pipeline (4), a water inlet pipeline (5), a water inlet gate valve (6), a water inlet electromagnetic valve (7), an overflow plate (8), a water stabilizing hole plate (9), a water tank (10), a pressure measuring pipe (13), a pressure measuring meter (12), a water outlet gate valve (16), a water outlet electromagnetic valve (17), a local resistance loss experiment pipeline (11), a pressure transmitter (14), an electromagnetic flow meter (15), an experiment table (18) and a camera (19);

there are two return water pipeline (4) between water tank (10) and water pump (3), a water intake pipe (5), open water pump (3), by water inlet solenoid valve (7) to water tank (10) water injection, make water tank (10) have the overflow, the water level reaches the back, rivers go into partial resistance loss experiment pipeline (11), through PLC control system (2) control water pump (3) water outlet flow, make pressure-measuring pipe (13) liquid level change, and then pressure transmitter (14) reachs 6 pressure-measuring pipe (13) measured data and transmits to touch-sensitive screen computer (1), electromagnetic flowmeter (15) also transmit measured data to touch-sensitive screen computer (1) simultaneously.

2. The remote local resistance loss experiment platform as claimed in claim 1, wherein the service manager comprises a management platform, the management platform comprises a login interface of the remote local resistance loss experiment platform and an interface for a user to login and select a remote local resistance loss experiment platform to perform related experiments, and the service manager is connected with the remote local resistance loss experiment device through 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 local drag loss experimental platform of claim 1, wherein said 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 local resistance loss experiment device which can be controlled by the computer is remotely controlled to complete the local resistance loss experiment.

4. Remote-controllable local resistance loss experiment platform according to claim 1, characterized in that the water inlet pipeline (5) is provided with: a water inlet gate valve (6) and a water inlet electromagnetic valve (7);

The water inlet gate valve (6) and the water inlet electromagnetic valve (7) are arranged on a pipeline between a water inlet of the water pump (3) and a water outlet at the bottom of the water tank (10).

5. The remote controllable local resistance loss experiment platform according to claim 1, wherein the water return pipeline (4) is provided with: a water outlet gate valve (16) and a water outlet electromagnetic valve (17);

and the water outlet gate valve (16) and the water outlet electromagnetic valve (17) are arranged on a pipeline between the water pump (3) and the tail end of the local resistance loss experiment pipeline (11).

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