CN201374136Y - multifunctional teaching equipment - Google Patents

Abstract

The utility model provides a multifunctional teaching device, which comprises a body and an operational panel, wherein a PC, an automatic control principle experimental system, a variable frequency speed regulation system, a temperature-pressure closed loop control system and a servo motor control system are arranged inside the body, wherein the element of anyone of the PC, the automatic control principle experimental system, the variable frequency speed regulation system, the temperature-pressure closed loop control system and the servo motor control system is independently fixed onto a module, and a control signal wire of each module is guided to the operation panel to form a fast connection port. The multifunctional teaching device is easy to be used for skill training of multiple automatic control and transducer technology.

Description

multifunctional teaching equipment

technical field

The invention relates to a teaching device, in particular to a multifunctional teaching device used for teaching automatic control principles and sensor technology.

Background technique

At present, skills training and teaching often require training on automatic control and sensor technology knowledge, and in the training process, a large number of experimental simulation operations are required to deepen the trainees' perception of knowledge and strengthen the trainees' experience and mastery of knowledge . However, at present, the training and teaching equipment configuration of most training institutions is uneven, which affects the quality of training. Among them, the main body of the experimental simulation operation of most training institutions is a single automation equipment and sensor devices that use principle-based teaching aids as training equipment, which makes the training and actual application disconnected, and also makes the form of the automation system composed of such equipment single, and the transmission signal It is time-consuming and labor-intensive to connect the wires with screws, and the teaching efficiency is low.

Utility model content

The purpose of this utility model is to provide a unique and novel multifunctional teaching equipment with a modular structure design, which is easy to carry out a number of automatic control and sensor technology skills training, so that the training content can be changed from simple to complex, from simple to simple. In-depth, so that students can master various skills in the combination of automatic control equipment and sensors in a short period of time.

In order to achieve the above purpose, the utility model provides a multifunctional teaching device, which includes a main body and an operation panel. The main body is equipped with a PC, an automatic control principle experiment system, a frequency conversion speed regulation system, a temperature-pressure closed-loop control system, and a servo motor control system. The components of PC, automatic control principle experiment system, frequency conversion speed regulation system, temperature-pressure closed-loop control system and servo motor control system are independently fixed on a module, and the control signal lines of each module are led to the operation panel to form a quick wiring port.

Preferably, the frequency conversion speed regulation system includes a frequency converter, a closed-loop control card, an AC asynchronous motor, a rotary encoder, a load and a tachometer, and the control signal lines of all the above components are led to the operation panel to form a quick wiring port.

Preferably, the servo motor control experiment system includes a servo motor, a servo amplifier, a connecting cable and a computer, and the control signal lines of the above components are all led to the operation panel to form a quick wiring port.

Preferably, the temperature-pressure closed-loop control system includes a temperature sensor, a pressure sensor, an intelligent control electric regulating valve, an intelligent light column digital display controller, a multimeter, a heater, and a power line, and the control signal lines of all the above components are led to The operation panel forms a quick wiring port.

Preferably, the automatic control principle experiment system is mainly composed of a computer, an AD/DA acquisition card, and an automatic control principle experiment box, and the control signal lines of all the above components are led to the operation panel to form a quick wiring port.

Compared with the prior art, the technical solution provided by the utility model has the following points:

Each component of this multi-functional teaching equipment is independently fixed on a module, and the control signal line is led to the operation panel to form a quick connection port, and then each device can be used to form an experimental system with the quick connection line to complete the training of automatic control and sensor application skills. The subject can carry out a number of skills training for automatic detection and control systems. The unique and novel modular structure design can make the training content from simple to complex, from shallow to deep, and trainees can master the various methods of combining automatic control equipment and sensors in a short period of time, and improve the application level of professional technology .

Description of drawings

Fig. 1 is a functional block diagram of the multifunctional teaching equipment of the present invention.

Fig. 2 is the experimental principle diagram of the frequency conversion speed regulation system of the utility model multifunctional teaching equipment.

Fig. 3 is a block diagram of the experimental principle of the servo motor control system of the multifunctional teaching equipment of the present invention.

Fig. 4 is a schematic diagram of the application wiring of the temperature sensor and the electric regulating valve in the flow control of the multifunctional teaching equipment of the present invention.

Fig. 5 is a schematic diagram of the application wiring of the pressure sensor and the electric regulating valve in the flow control of the multifunctional teaching equipment of the present invention.

Fig. 6 is a block diagram of the automatic control principle experiment system of the multifunctional teaching equipment of the present invention.

Detailed ways

The structure and principle of the multifunctional teaching equipment provided by the preferred embodiment of the present invention will be described in detail below with reference to the drawings.

The multifunctional teaching equipment of the utility model may include a main body and an operation panel. The main body is equipped with a PC, an automatic control principle experiment system, a frequency conversion speed regulation system, a temperature-pressure closed-loop control system, and a servo motor control system, and its functional block diagram is shown in Figure 1. The PC is connected with the automatic control principle experiment system, frequency conversion speed regulation system, temperature-pressure closed-loop control system or servo motor control system. Each component of the PC, automatic control principle experiment system, frequency conversion speed regulation system, temperature-pressure closed-loop control system or servo motor control system is independently fixed on a module, and the control signal lines of each module are led to the operation panel to form a quick connection mouth. When in use, according to the purpose and content of the experiment, the quick connection line can be used to connect the quick connection port to form a specific experimental system to complete the required automatic control and sensor application skills training items. Among them, the shell of the main body can be made of a combination of steel and wood structures to enhance its design novelty, aesthetics and practicability; and the automatic control equipment and sensor devices can be equipped with industrial components to facilitate preparation.

Specifically in this embodiment, the variable frequency speed regulation system can be composed of a frequency converter, a closed-loop control card, an AC asynchronous motor, a rotary encoder, a load, and a tachometer, as shown in Figure 2, and the control signal lines of these components are all connected to the operating panel to form a quick wiring port. Through the wiring of this frequency conversion system, the closed-loop system experiment of frequency conversion and speed regulation can be completed. Among them, the inverter can be a Mitsubishi FR-A540-0.7K-CH inverter, the closed-loop control card can be a Mitsubishi FR-A5AP closed-loop control card, and the AC asynchronous motor can be a S5-L4 180W AC asynchronous motor. The rotary encoder may be an E6B-CWZ1X type rotary encoder.

The servo motor control system can be composed of a servo motor, a servo amplifier, a connecting cable, a control module, and a computer connected to the quick connection port of the operation panel through the experimental connecting line, as shown in Figure 3. Wherein, the servo motor can be a Mitsubishi HC-MFS13 servo motor, the servo amplifier can be a Mitsubishi MR-J2S-10A servo amplifier, and the control module can be MRZJW3-SETUP121E software. When using the servo motor control system, the servo motor control system can be debugged first. Commissioning is used to confirm the operation of the system, not the operation of the machine. Among them, there are two methods of debugging, one is to use the servo setting software for trial operation, and the other is to use the amplifier operation panel for trial operation.

The temperature-pressure closed-loop control system can be composed of temperature sensors, pressure sensors, intelligent control electric control valves, intelligent light column digital display controllers, multimeters, heaters, power cords, etc. When the connection line shown in Figure 4 is used to connect the corresponding quick connection port of the operation panel, a constant temperature control system consisting of a temperature sensor and an electric valve can be formed to complete the temperature and electric valve constant temperature control experiment. When the connection line shown in Figure 5 is used to connect the corresponding quick connection port of the operation panel, it can be used to complete the application experiment of the pressure sensor and the electric regulating valve in the flow control.

The automatic control principle experiment system mainly consists of a computer, AD/DA acquisition card, automatic control principle experiment box, and printer, as shown in Figure 6. Among them, the computer plays the role of signal generation, measurement, display, system control and data processing according to different experiments, the printer mainly records various experimental data and results, and the experimental box mainly constructs the simulated object to be controlled. During the experiment, you can use the quick connection wire to connect the analog circuit on the experiment box; then turn on the power, start the computer, run the self-control principle experiment software, test the serial port communication status, read the output signal of the analog circuit, set and debug parameters; finally analyze the results.

The above multi-functional teaching equipment combines different experimental systems and fixes each component independently on a module; when in use, the corresponding experimental system can be formed by connecting the quick connection port with a quick connection line according to the purpose and content of the experiment. As a result, the above-mentioned multi-functional teaching equipment can carry out a number of skills training of automatic detection and control systems. For example, the experimental courses that can be completed are as follows:

1. Typical link and its step response; 2. Second-order system step response;

3. Control system stability analysis; 4. System frequency characteristic measurement;

5. Digital PID control; 6. Sampling control experiment;

7. Furnace temperature control experiment; 8. Servo motor and drive operation;

9. Computer A/D and D/A card function experiment; 10. Application of regulating valve in flow control;

11. Performance test of temperature and pressure sensor; 12. Closed-loop system experiment of frequency conversion speed regulation.

Therefore, the above-mentioned multi-functional teaching equipment is easy to make the training content from simple to complex, from shallow to deep, so that students can master various usage methods of combining automatic control equipment and sensors in a short period of time, and improve the application level of professional technology .

Although detailed descriptions and introductions have been made above, and there are corresponding detailed schematic diagrams and specific embodiments for auxiliary descriptions, it is obvious to those skilled in the art that various improvements can be made within the scope of the claims, which does not mean Deviating from the spirit and scope of the present invention, therefore, the above corresponding descriptions and corresponding embodiments are not meant to limit the present invention.

Claims (6)

1. A kind of multifunctional teaching equipment, comprises main body and operation panel, is provided with PC machine, self-control principle experiment system, frequency conversion speed regulation system, temperature-pressure closed-loop control system, servo motor control system in the main body, wherein said PC machine, The components of the automatic control principle experiment system, frequency conversion speed regulation system, temperature-pressure closed-loop control system and servo motor control system are all independently set on one module, and the control signal lines of each module are led to the operation panel to form a quick wiring port. 2. The multifunctional teaching equipment according to claim 1, characterized in that, the variable frequency speed regulation system includes a frequency converter, a closed-loop control card, an AC asynchronous motor, a rotary encoder, a load and a tachometer, and the control of all the above-mentioned components The signal lines are all led to the operation panel to form a quick wiring port. 3. multifunctional teaching equipment according to claim 1, is characterized in that, described servomotor control experiment system comprises servomotor, servo amplifier, connecting cable and computer, and the control signal lines of above-mentioned parts all lead to operation panel to form Quick wiring port. 4. multifunctional teaching equipment according to claim 3, is characterized in that, described servomotor control experiment system also comprises the control module of control servomotor and servo amplifier, is set by the operating parameter of this servomotor by this control module . 5. The multifunctional teaching equipment according to claim 1, wherein the temperature-pressure closed-loop control system includes a temperature sensor, a pressure sensor, an intelligent control electric regulating valve, an intelligent light column digital display controller, a multimeter, and a heater And the power line, and the control signal lines of all the above components are led to the operation panel to form a quick wiring port. 6. multifunctional teaching equipment according to claim 1, is characterized in that, described automatic control principle experiment system mainly is made up of computer, AD/DA acquisition card, automatic control principle experiment box, and the control signal lines of all above-mentioned parts are all Lead to the operation panel to form a quick wiring port.

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