CN112017514A - Weir flow demonstration experiment platform based on shared education concept - Google Patents
Weir flow demonstration experiment platform based on shared education concept Download PDFInfo
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Abstract
The invention discloses a weir flow demonstration experiment platform based on a shared education concept. The method comprises the following steps: the system comprises a computer-controlled weir flow demonstration experimental device, a service manager and a user terminal; the computer-controlled weir flow demonstration experiment platform is connected with the service manager through the internet; the service manager is connected with the user terminal through the Internet. Computer-controlled weir flow demonstration experimental device includes: organic glass experiment basin, steady water orifice plate, automatic water level measuring probe, experiment weir, triangle weir measuring flume, triangle weir water level automatic needle cylinder, survey special automatic calibrator of triangle weir crest elevation, porous tail gate, automatic tail gate lifting wheel, support, bypass pipe automatic fine setting valve, bypass pipe, delivery pipe, water supply flow automatic regulating valve, water pump, water storage box, camera, touch-sensitive screen computer and PLC control system. The invention solves the relevant problems of demonstrating weir flow experiments in colleges and universities, and achieves the teaching purpose by sharing remote experiments.
Description
Technical Field
The invention relates to the technical field of education and teaching and industrial control, in particular to a weir flow demonstration experiment platform based on shared education ideas.
Background
At present, the scientific water supply and drainage and engineering major of colleges and universities in China generally need to set up related professional experiments, wherein the related professional experiments comprise weir flow experiment demonstration and the like. The current stage experimental equipment generally comprises a high-level water tank, a low-level water tank, a pressure gauge, a pressure measuring pipe, a sliding ruler, a water pump, a pressure gauge water tank and the like. In the running process of the hydraulics experiment, experimental result data are obtained through a computer-controlled electromagnetic valve, an automatic water level measuring needle, a special automatic calibrator for measuring the elevation of the weir crest of the triangular weir and the like which are arranged on the equipment.
At present, the domestic weir flow experiment demonstration platforms can be divided into two types: firstly, the students manually carry out experimental operation. Because the actual operation must be operated according to the experimental instruction, the influence of various factors is eliminated, and system errors inevitably exist in the experiment, multiple experiments are needed to obtain accurate experimental results, but in the actual operation, the multiple experiments are difficult to obtain the accurate experimental results; in actual operation, data is unstable due to the influence of various factors, and effective data can be obtained after the data is stable. The colleges and universities who purchase experimental equipment can only provide experimental opportunities for local students, experimental resources cannot be fully utilized, and the experimental process of the local students has the defects of inconvenience, difficulty in obtaining accurate experimental data and the like, and relevant experiments cannot be carried out in areas lacking experimental conditions, students lack actual operation opportunities, cannot master experimental operation capacity, and cannot obtain practical and visual experimental data.
And secondly, an internet-based remote experiment scheme is mainly used for performing online simulation or virtual experiment by adopting a software simulation experiment platform, the experiment phenomenon and data of the scheme are obtained by software calculation under an ideal condition, the experiment environment is completely virtualized by software, the due authenticity in the experiment process is not available, the experiment process is solidified, various interference factors and errors existing in the actual condition cannot be simulated, the experiment process is convenient to know, the experiment effect is difficult to be compared with the real experiment, and the cultivation of the innovation capability and problem discovery consciousness of students is unfavorable.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a sharing system combining weir flow demonstration experiment platforms by means of related equipment such as a computer-controlled weir flow demonstration experiment device, the internet, a user terminal and the like, so that users can develop weir flow demonstration experiments in real experiment environments and conditions.
A weir flow demonstration experiment platform based on sharing education theory comprises: 1 or more computer-controlled weir flow experimenting devices, a service manager, and 1 or more user terminals.
The computer-controlled weir flow experimental device is connected with the service manager through the Internet (wired or wireless); the service manager is connected with the user terminal through the internet (wired or wireless).
The computer-controllable weir flow experimental apparatus comprises: organic glass experiment basin, steady water orifice plate, automatic water level measuring needle, experiment weir, triangle weir measuring flume, triangle weir water level automatic needle cylinder, survey special automatic calibrator of triangle weir crest elevation, porous tail gate, automatic tail gate lifting wheel, support, bypass pipe automatic fine setting valve, bypass pipe, delivery pipe, water supply flow automatic regulating valve, water pump, water storage box, camera, touch screen computer and PLC control system.
The water supply pipeline and the bypass pipeline are respectively provided with an electromagnetic valve, and the water pump is connected with the water supply pipeline to convey water to the organic glass experiment water tank; a porous tail gate is arranged on the organic glass experimental water channel and is connected with an automatic tail gate lifting wheel; the organic glass experiment water tank is connected with the triangular weir water measuring tank, a triangular weir water level automatic measuring needle cylinder and a special automatic calibrator for measuring the elevation of the top of the triangular weir are arranged on the triangular weir water measuring tank, and finally water flows into the water storage tank in a circulating mode.
The equipment is self-circulation water supply, and the return water is stored in a water storage tank. During the experiment, water is supplied to the organic glass experiment water tank by the water pump, and water flows back to the water storage tank through the triangular weir measuring water tank. The head of the organic glass experimental water tank is provided with a water stabilizing and wave absorbing device, and the tail end is provided with a porous tail gate and a tail gate lifting mechanism. Various weir and gate models can be replaced in the organic glass experimental water tank. The water levels of the weir gate upstream and downstream and the triangular weir measuring flume are respectively measured by a measuring pin and a triangular weir water level measuring pin cylinder; a special calibrator is provided for measuring the elevation of the top of the triangular weir; the demonstration result is collected and transmitted to a PLC control system, and the data is reflected on a computer touch screen
Further, the weir flow demonstration experiment platform based on the sharing education concept comprises a management platform, the management platform comprises a login interface of the computer-controlled weir flow experiment device and an interface for a user to login and select a certain computer-controlled weir flow experiment device to carry out related experiments, and the service manager is connected with the computer-controlled weir flow experiment device through the internet (wired or wireless); the service manager is connected with the user terminal (including a computer and a mobile phone) through the internet (wired or wireless).
Further, as described above, the weir flow demonstration experiment platform based on the shared education concept, the user terminal includes a computer or a mobile phone; the mobile phone or the computer is connected with an operation platform of the service manager through the internet (wired or wireless), and the selected computer-controlled weir flow experiment device is remotely controlled to complete weir flow experiment demonstration.
Further, the experimental apparatus for demonstrating weir flow controllable by computer as described above can demonstrate various weir flow phenomena introduced in the hydraulics course and downstream water surface connection forms thereof by changing different weirs, including side contraction non-weir and other various common phenomena such as wide top weir flow, bottom flow, flip flow, surface flow and scoop flow.
During the experiment, the water pump supplies water to the experiment water tank, the electromagnetic valve which can be controlled by a computer is arranged in the pipeline, and the water flows through the triangular weir measuring water tank and flows back to the water storage tank. The head of the water tank is provided with a water stabilizing and wave eliminating device, and the tail end is provided with a porous tail gate and a tail gate lifting mechanism. The tank can be replaced with various weir and gate models. Measuring the water level of the weir gate upstream and downstream and the triangular weir measuring water tank by using an automatic water level measuring needle and an automatic triangular weir water level measuring needle cylinder respectively; a special automatic calibrator is arranged for measuring the top elevation of the triangular weir; and the demonstration result is transmitted to a PLC control system through collection, and the data is reflected on a computer touch screen.
Has the advantages that:
the invention solves the relevant problems of the prior colleges and universities in establishing weir flow experiment demonstration to a certain extent, reasonably utilizes resources, serves students of water supply and drainage science and engineering major of the colleges and universities lacking the experimental conditions in China, achieves the teaching purpose by sharing remote experiments, and realizes the sharing education concept.
Drawings
Fig. 1 is a schematic diagram of a weir flow demonstration experiment platform based on a shared education concept.
Fig. 2 is a schematic structural view of a computer-controlled weir flow experimental device according to the present invention.
The labels in the figure are: 1-organic glass experimental water tank; 2-water stabilizing pore plate; 3-automatic water level measuring needle; 4, an experimental weir; 5-a triangular weir measuring flume; 6-automatic measuring cylinder for water level of triangular weir; 7-special automatic calibrator for measuring the elevation of the crest of the triangular weir; 8-a porous tail gate; 9-automatic tail gate lifting wheel; 10-a support; 11-bypass pipe automatic fine tuning electromagnetic valve; 12-a by-pass pipe; 13-a water supply pipe; 14-automatic water supply flow regulating solenoid valve; 15-a water pump; 16-a water reservoir; 17-a camera; 18-touch screen computer; 19-PLC control system.
Fig. 3 is a schematic diagram of the computer-controlled weir flow experimental device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below clearly and completely, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making an invasive task, are within the scope of the present invention.
Example (b):
FIG. 1 is a schematic diagram of a weir flow demonstration experiment platform based on a shared education concept; the weir flow demonstration experiment platform based on the shared education concept comprises the following steps: 3 computer-controlled weir flow experimental devices, a service manager and 30 user terminals.
The computer-controlled weir flow experimental device is connected with the service manager through the Internet (wired or wireless); the service manager is connected with the user terminal through the internet (wired or wireless).
The weir flow experimental device capable of being controlled by the computer provided by the invention has the advantages that the user terminal is in the form of a computer client or a mobile terminal and the like, and the management server can be connected with at least one user terminal.
The weir flow demonstration experiment platform based on the shared education concept provided by the invention utilizes the keyboard or the touch screen arranged on the user terminal to enter the operation platform in the management server, further controls the selected weir flow experiment device which can be controlled by the computer, completes remote experiment operation, obtains real-time experiment images and data, and transmits the real-time experiment images and data to the user terminal through the management server to complete weir flow experiment demonstration.
The weir flow demonstration experiment platform based on the shared education concept can simultaneously develop teaching experiments of the weir flow experiment device which can be controlled by a computer. In practical application, the remote experiment system can be provided with a plurality of computer-controlled weir flow experiment devices which are uniformly managed by the management server.
FIG. 2 is a schematic structural view of a computer-controlled weir flow experimental facility according to the present invention; as shown in fig. 2, the computer-controlled weir flow experimental apparatus includes: organic glass experiment basin 1, water stabilization hole board 2, automatic water level measuring needle 3, experiment weir 4, triangle weir water measuring tank 5, triangle weir water level automatic needle measuring cylinder 6, special automatic calibrator 7 for measuring triangle weir crest elevation, porous tail gate 8, automatic tail gate lifting wheel 9, support 10, bypass pipe automatic fine adjustment solenoid valve 11, bypass pipe 12, delivery pipe 13, water supply flow automatic regulating solenoid valve 14, water pump 15, water storage tank 16, camera 17, touch-sensitive screen computer 18 and PLC control system 19.
The equipment is self-circulation water supply, and return water is stored in the water storage tank 16. During the experiment, a water pump 15 supplies water to the organic glass experiment water tank 1, a bypass pipe automatic fine adjustment electromagnetic valve 11 and a water supply flow automatic adjustment electromagnetic valve 14 are installed in a pipeline, and water flows through the triangular weir measuring water tank and flows back to the water storage tank 16. The head of the organic glass experimental water tank 1 is provided with a water stabilizing and wave absorbing device, and the tail end is provided with a porous tail gate 8 and an automatic tail gate lifting wheel 9. Various weir and gate models can be replaced in the organic glass experimental water tank 1. The water levels of the weir gate upstream and downstream and the triangular weir water measuring groove 5 are respectively measured by an automatic water level measuring needle 3 and a triangular weir water level automatic needle measuring cylinder 6; a special automatic calibrator 7 for measuring the elevation of the top of the triangular weir is provided for measuring the elevation of the top of the triangular weir; the demonstration result is transmitted to the PLC control system 19 through collection, and the data is reflected on the computer touch screen 18.
The weir flow demonstration experiment platform based on the shared education concept relies on the internet technology, combines a plurality of computer-controlled weir flow demonstration experiment devices into a sharing system, conducts weir flow experiment demonstration under real experiment environment and conditions, displays measurement parameters such as upstream and downstream, height of water level of a water tank, water level of a triangular weir, weir crest elevation and the like on a user side in real time, and watches experiment phenomena through the camera 17. On the premise of ensuring the authenticity and operability of the experiment, the results can be output, the curves can be drawn and the like, each sensor and the camera 17 thereof can display the experimental process and data on the user end in real time, and the user can input relevant data before the experiment on the mobile portable equipment through remote control, observe the experimental process and the data in real time and derive the relevant experimental data.
The remote experiment system can simultaneously accommodate a plurality of user terminals to access the management server through the network, the user terminals independently exist, and different students can perform experiments on different user terminals. The user terminal can 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 of the water inlet pipeline, the water inlet pipeline is provided with: the device comprises a bypass pipe automatic fine-tuning electromagnetic valve 11, a water supply flow automatic adjusting electromagnetic valve 14, a triangular weir water level automatic measuring needle cylinder 6, an automatic water level measuring needle 3 and a special automatic calibrator 7 for measuring the elevation of the top of a triangular weir.
The automatic water level measuring probe 3 is arranged on the organic glass experimental water tank 1, the triangular weir water level automatic measuring probe cylinder 6 is arranged in the triangular weir water measuring tank 5, and the water supply flow automatic regulating electromagnetic valve 14 arranged on the water inlet pipe is used for changing the opening degree of the water inlet valve; the bypass pipe automatic fine-tuning electromagnetic valve 11 arranged on the bypass pipeline is used for water filling and balancing the front and back water pressure of the water inlet valve.
The weir flow demonstration experiment platform based on the shared education concept comprises an organic glass experiment water tank 1, a water storage tank 16 and a triangular weir measuring water tank 5 which are placed on an experiment platform frame; the triangular weir water measuring tank 5 is internally provided with a triangular weir water level automatic measuring cylinder 6 and a special automatic calibrator 7 for measuring the elevation of the top of the triangular weir, an automatic water level measuring needle is arranged on a measuring point on a weir flow pipeline from the organic glass experimental water tank 1 to the water storage tank 16, and a water supply flow automatic regulating electromagnetic valve 14 is arranged on a water inlet pipe and a bypass pipeline, so that the weir flow phenomenon can be visually observed.
Fig. 3 is a schematic diagram of the computer-controlled weir flow experimental device of the present invention.
The service manager includes: the system comprises an industrial personal computer, image acquisition equipment, a processing module and a storage module; the service manager comprises a management platform, the management platform comprises a login interface of the computer-controlled weir flow experimental device and an interface for a user to login and select a certain computer-controlled weir flow experimental device to carry out related experiments, and the service manager is connected with the computer-controlled weir flow experimental device through the internet (wired or wireless); the service manager is connected to the user terminal via the internet (wired or wireless).
The data acquisition device is connected with the industrial personal computer in a wireless manner; the image acquisition equipment is connected with an industrial personal computer through a data bus; the industrial personal computer transmits the information obtained by the data acquisition device and the image acquisition equipment to the processing module in a wireless mode.
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 comprises a display screen and an operation device.
The display screen and the operation equipment 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 machine in a wired communication mode.
The data acquisition equipment comprises upstream and downstream water levels and a triangular weir water level: measured by an automatic water level measuring needle 3 on the pipeline; elevation of a three-top weir: measured by a special automatic calibrator 7 for measuring the elevation of the top of the triangular weir at a measuring point on the pipeline.
The image acquisition equipment comprises but is not limited to a camera 17, the camera 17 is fixed on an operation platform support of the weir flow experiment device which can be controlled by a computer, is connected with a PLC control system 19 and further connected with a touch screen computer 18, and is displayed and controlled (long-range view or close-range view) on the touch screen computer 18. As the students are far away from the experimental device and cannot go to the field to observe the operation of the equipment, the remote students can observe the operation condition of the equipment and relevant experimental phenomena or experimental results through the camera 17.
The method adopts a mode of 'hardware equipment entity-real experiment scene-remote operation panel', remotely controls the computer-controlled weir flow demonstration experiment device according to the experiment control information input by students at the user terminal, and develops the required related professional experiments. The students can carry out experiments at any time and any place through the network, and do not need to specially carry out experiments in a fixed laboratory, thereby realizing the teaching at different places through the network and playing a great role in promoting the improvement of the innovation capability and the comprehensive capability of the students. Meanwhile, the experimental data generated in the experiment is real data generated by the remote experimental device, and is not software simulation data, so that convenience is provided for students, and the enthusiasm of the students in doing the experiment can be promoted. In addition, because the experimental hardware is arranged on the remote experimental equipment, the requirement on the hardware of the user terminal is not high, and students can complete experiments on common computers or even mobile terminals. The invention realizes social sharing of experimental resources, makes up the shortage 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 examples are only used to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. The utility model provides a weir flow demonstration experiment platform based on sharing education theory, its characterized in that weir flow demonstration experiment platform based on sharing education theory includes: 1 or more computer-controllable weir flow experimental devices, a service manager and 1 or more user terminals;
the computer-controlled weir flow demonstration experimental device comprises: the device comprises an organic glass experimental water tank (1), a water stabilizing hole plate (2), an automatic water level measuring needle (3), an experimental weir (4), a triangular weir measuring water tank (5), a triangular weir water level automatic needle measuring cylinder (6), a special automatic calibrator (7) for measuring the elevation of the weir crest of the triangular weir, a porous tail gate (8), an automatic tail gate lifting wheel (9), a bracket (10), a bypass pipe automatic fine adjustment electromagnetic valve (11), a bypass pipe (12), a water supply pipe (13), a water supply flow automatic adjustment electromagnetic valve (14), a water pump (15), a water storage tank (16), a camera (17), a touch screen computer (18) and a PLC control system (19);
install on the water inlet pipe: a bypass pipe automatic fine adjustment electromagnetic valve (11), a water supply flow automatic adjustment electromagnetic valve (14), a triangular weir water level automatic needle measuring cylinder (6), an automatic water level measuring needle (3) and a special automatic calibrator (7) for measuring the elevation of the top of the triangular weir;
the automatic water level measuring probe 3 is arranged on the organic glass experimental water tank (1), the triangular weir water level automatic needle measuring cylinder (6) is arranged in the triangular weir water measuring tank (5), and the water supply flow automatic regulating electromagnetic valve (14) arranged on the water inlet pipe is used for changing the opening degree of the water inlet valve; the bypass pipe automatic fine-tuning electromagnetic valve (11) arranged on the bypass pipeline is used for filling water to balance the front and rear water pressures of the water inlet valve;
an organic glass experimental water tank (1) and a water storage tank (16) are arranged on an experimental platform frame, and a triangular weir measuring water tank (5); the triangular weir water level automatic needle measuring cylinder (6) and the special automatic calibrator (7) for measuring the elevation of the weir top of the triangular weir are arranged in the triangular weir water measuring tank (5), an automatic water level measuring needle (3) is arranged on a measuring point on a weir flow pipeline from the organic glass experimental water tank (1) to the water storage tank (16), and a water supply flow automatic regulating electromagnetic valve (14) is arranged on a water inlet pipeline and a bypass pipeline, so that the weir flow phenomenon can be visually observed;
the equipment is self-circulation water supply, and return water is stored in a water storage tank (16); during experiments, water is supplied to the organic glass experimental water tank (1) by a water pump (15), a bypass pipe automatic fine adjustment electromagnetic valve (11) and a water supply flow automatic adjustment electromagnetic valve (14) are installed in a pipeline, and water flows through the triangular weir measuring water tank and flows back to the water storage tank (16); the head part of the organic glass experimental water tank (1) is provided with a water stabilizing and wave absorbing device, and the tail end is provided with a porous tail gate (8) and an automatic tail gate lifting wheel (9); various weir and gate models can be replaced and installed in the organic glass experimental water tank (1); the water levels of the weir gate upstream and downstream and the triangular weir water measuring groove (5) are respectively measured by an automatic water level measuring needle (3) and a triangular weir water level automatic measuring needle cylinder (6); a special automatic calibrator (7) for measuring the elevation of the top of the triangular weir is arranged for measuring the elevation of the top of the triangular weir; the demonstration result is transmitted to a PLC control system (19) through collection, and the data is reflected on a computer touch screen (18).
2. A weir flow demonstration experiment platform based on a shared education concept according to claim 1, wherein the service manager comprises a management platform, the management platform comprises a login interface of the weir flow demonstration experiment platform which can be operated by a computer and an interface for a user to login and select a certain weir flow demonstration experiment device which can be operated by the computer to carry out related experiments, and the service manager is connected with the weir flow demonstration experiment platform which can be operated by the computer through internet in a wired or wireless way; the service manager is connected with the user terminal through the internet in a wired or wireless mode.
3. The weir flow demonstration experiment platform based on the shared education concept 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 weir flow demonstration experiment device is remotely controlled to complete weir flow demonstration experiments.
4. A weir flow demonstration experimental platform based on shared education concept according to claim 1, wherein the device can demonstrate various weir flow phenomena introduced in the hydraulics course and downstream water surface connection forms thereof by changing different weirs, including side contraction non-weir and other various common phenomena such as wide top weir flow, bottom flow, flip flow, surface flow and scoop flow; in addition, the lower outflow and thin-wall weir flow of the flat gate can be demonstrated; the demonstration result is transmitted to a PLC control system (19) through collection, and the data is reflected on a touch screen of a touch screen computer (18).
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| CN202010633013.8A CN112017514A (en) | 2020-07-02 | 2020-07-02 | Weir flow demonstration experiment platform based on shared education concept |
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