CN104680898A - Portable multi-feature industrial object simulation device and switching method thereof - Google Patents

Abstract

The invention discloses a portable multi-character industrial object simulation device and a switching method thereof. The industrial object simulation device includes a frame, a control module, a card slot, a PV display device, a PV signal interface, an MV display device, an MV adjustment potentiometer and a signal Line switching interface device, data power line interface, adjustable bracket, 4 pieces of simulated card paper. The card slot, the spray gun of the display and adjustment device, the bracket and the interface are arranged on the frame. Each time a card is selected and inserted into the card slot to work. The invention is suitable for the simulation and simulation demonstration of the characteristics of several common chemical process industrial objects. When working, there are common industrial object images on different cards. After the relevant cards are inserted into the card slots, the control module in the device can identify the industrial objects that need to be simulated, and call the corresponding simulation program to simulate and display the characteristics of the relevant objects. This device can not only be demonstrated by a single machine, but also can be used in conjunction with a regulator to complete related closed-loop experiments. Using the portable multi-characteristic industrial object simulation device of the present invention can intuitively and conveniently simulate complex and abstract industrial object characteristics, greatly reducing the cost and consumption of the device, while taking into account the vivid image, simple structure, small size and portability.

Description

Portable multi-feature industrial object simulation device and switching method

technical field

The invention belongs to the field of teaching instruments and equipment, and relates to a portable multi-characteristic industrial object simulation device and a switching method thereof. the

Background technique

At present, there are two types of known industrial object simulation devices. The first type is miniature physical objects, such as water tanks, pressure vessels, heaters, heat exchangers, regulating valves, pipelines, etc., which are combined into corresponding simulation objects for demonstration, Research, test properties of industrial objects. This method is vivid and intuitive, close to the actual industrial scene. However, the cost and maintenance costs are high, and the use is relatively complicated, and most of them are placed in professional laboratories. The second is the integrated circuit experiment box. Use integrated circuit components to accompany the corresponding wiring to complete the simulation of the relevant characteristics. The cost of this method is relatively low, and the features are relatively rich, but it needs to be used with an oscilloscope or similar equipment, and it is not intuitive enough. the

Contents of the invention

The object of the present invention is to provide a low-cost portable simulation device capable of intuitively and visually simulating the characteristics of various industrial objects in view of the above-mentioned deficiencies in the prior art. the

In order to achieve the above object, the technical solutions adopted by the present invention are as follows. the

A portable multi-feature industrial object simulation device, including frame, control module, card slot, PV display device, MV display device, data power line interface, PV signal line interface, MV adjustment potentiometer and signal line switching interface device, metal contactor Sheet set, adjustable stand, 4 sheets of simulated cardstock. The card slot, the display and adjustment device, the bracket and the interface are arranged on the frame. the

Further, the MV display device is connected to the I/O terminal of the control module. the

Further, the MV adjustment potentiometer and the signal line switching interface device are connected to the I/O terminal of the control module. the

Further, the PV display device is connected to the I/O terminal of the control module. the

Further, the PV signal line switching interface device is connected to the I/O terminal of the control module. the

Further, the slot is provided with a set of metal contacts connected to the I/O terminal of the control module. the

Further, the simulated cardboard has small holes corresponding to the metal contacts. the

Further, the simulated cardboard has pictures of different industrial objects. the

Further, the data power interface is connected with the control module. the

Further, the adjustable bracket is connected to the back of the frame. the

Further, the control circuit in the frame includes a single-chip microcomputer, a display and operation buttons, and the communication port of the single-chip microcomputer is connected with the operation buttons and the display device. the

The present invention also provides a method for switching objects using the above. Include the following steps:

1) Insert a piece of any simulated cardstock. the

2) Power on the device. The single-chip microcomputer system detects the small hole corresponding to the cardboard through the metal contact group, and identifies the simulated industrial object to be simulated. the

3) The single-chip microcomputer system assigns the initial PV value of the simulation object and displays it by detecting the initial state of the MV device. When the MV change is detected, according to the object determined in step 2), the system changes the PV value accordingly and displays it dynamically over time. the

4) When switching between different simulated objects, replace the corresponding card and repeat steps 1)-3). the

Further, the steps 1)-4) are all operated under the control of the single-chip microcomputer system. the

Further, in step 3), the device can switch the interface device through the signal line to realize the stand-alone simulation demonstration work and the regulator to perform closed-loop experiment demonstration. the

Due to the adoption of the above technical solution, the beneficial effect of the present invention is that when the present invention is used for object characteristic simulation, complex object characteristics can be demonstrated visually and conveniently, and it is safe, economical and reliable. the

Description of drawings

Fig. 1 is a schematic front view of a portable multi-feature industrial object simulation device of the present invention. the

Fig. 2 is a top view of the structure of the portable multi-feature industrial object simulation device of the present invention. the

Fig. 3 is a schematic diagram of a boiler drum water level characteristic simulation card of the portable multi-characteristic industrial object simulation device of the present invention. the

Fig. 4 is a schematic diagram of a single-capacity self-balancing liquid level characteristic simulation card of the portable multi-characteristic industrial object simulation device of the present invention. the

Fig. 5 is a schematic diagram of a single-capacity non-self-balancing characteristic liquid level simulation card of the portable multi-characteristic industrial object simulation device of the present invention. the

Fig. 6 is a schematic diagram of a heating furnace temperature characteristic simulation card of the portable multi-characteristic industrial object simulation device of the present invention. the

Fig. 7 is a block principle diagram of the control program of the portable multi-characteristic industrial object simulation device of the present invention. the

In the figure: 1 is the slot, 2 is the PV signal interface, 3 is the PV display device, 4 is the data power interface, 5 is the MV display device, 6 is the potentiometer, 7 is the MV signal switching and interface device, 8 is the metal contact piece. the

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. the

The portable multi-characteristic industrial object simulation device of the present invention is shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, including frame, slot 1, control module (single chip machine, not shown) PV Signal interface 2, PV display device 3, data power interface 4, MV display device 5, potentiometer 6, MV signal switching and interface device 7, metal contact set 8, and 4 pieces of simulated card paper. the

Slot 1, PV signal interface 2, PV display device 3, data power interface 4, MV display device 5, potentiometer 6, MV signal switching and interface device 7 placed on the frame, control module, metal contact piece 8, placed on the within the frame. The simulation device also includes 4 pieces of simulated cardstock. The PV display device is connected to the control module, the PV signal interface is connected to the control module; the MV display device is connected to the control module, the potentiometer is connected to the MV signal switch and the interface device, and the end of the interface is connected to the control module; the metal contact group is connected to the control module . the

Preferably, different identification holes are left on the lower left side of each card corresponding to the metal contacts. Each card has a physical picture similar to the industrial site. the

Fig. 2 is a top view of the structure of the portable multi-feature industrial object simulation device of the present invention. As shown in Fig. 2, the device is provided with slots. the

Figure 3 is a simulation card diagram of the boiler drum liquid level control device. the

Figure 4 is a simulation card diagram of a single-capacity self-balancing industrial object. the

Figure 5 is a simulation card diagram of a single-capacity non-self-balancing industrial object. the

Figure 6 is a simulation card diagram of the temperature control of the industrial heating furnace object. the

Fig. 7 is a working block diagram of the program of the control module of the portable multi-characteristic industrial object simulation device of the present invention. As shown in Figure 7, the control module first detects the inserted card paper through the metal contact piece, then calls the relevant simulation program, and then detects the change of the MV value of the system to change the PV output and display. the

When the present invention is used to demonstrate object properties, different cards can be selected and inserted into slots each time, and corresponding different industrial object properties can be simulated and demonstrated. If it is a stand-alone demonstration, you can directly adjust the potentiometer 6 to change the system MV value 5, and you can intuitively see that the system PV value 3 changes according to the corresponding law. the

When using the portable multi-characteristic industrial object simulation device of the present invention and the regulator for closed-loop experiments, the MV value 5 of the simulation device can be changed by switching the MV signal and connecting the MV control signal of the regulator with the interface device 7 . Through system simulation, it can be seen intuitively that the system PV value 3 changes according to the corresponding law. At the same time, the PV value is connected to the process variable input terminal of the regulator through the PV signal interface 2 to complete the system loop demonstration. the

The working process of the portable multi-characteristic industrial object simulation device of the present invention is controlled by the single-chip microcomputer in the control box module and realized by programming software. the

When the portable multi-characteristic industrial object simulation device of the present invention is used for experiments, complex multi-characteristic industrial objects can be simulated and demonstrated conveniently and intuitively, cost and energy consumption are greatly reduced, and the device is simple in structure, safe and reliable, and easy to carry. the

The above description is only a preferred embodiment of the present invention, and is not intended to limit the implementation scope of the present invention; if it does not depart from the spirit and scope of the present invention, any modification or equivalent replacement of the present invention shall be covered by the claims of the present invention. within the scope of protection. the

Claims (8)

1. A portable multi-feature industrial object simulation device, comprising a frame, a control module, a card slot, a PV display device, a PV signal interface, an MV display device, an MV adjustment potentiometer and a signal line switching interface device, a data power line interface, Metal contact group, adjustable bracket, 4 pieces of simulated cardboard, the card slot, display and adjustment device, metal contact group, the bracket, and the interface are arranged on the frame, which is characterized in that it also includes a control module, an analog card where, The MV display device is connected to the I/O terminal of the control module, The MV adjustment potentiometer and the signal line switching interface device are connected to the I/O terminal of the control module, The PV display device is connected to the I/O terminal of the control module, The PV signal line interface device is connected to the I/O terminal of the control module, The end of the slot is provided with a set of metal contacts connected to the I/O end of the control module, The data power interface is connected with the control module, the adjustable bracket is connected to the back of the frame, The control circuit in the frame includes a single-chip microcomputer, a display and operation buttons, and the communication port of the single-chip microcomputer is connected with the operation buttons and the display device. 2. The device according to claim 1, characterized in that, the frame has a card slot corresponding to the size of the simulated cardboard. 3. According to claim 1 or 2, it is characterized in that there are small holes corresponding to the metal contact pieces set on the simulated cardboard. 4. The portable multi-characteristic industrial object simulation device according to claim 3, wherein said card has vivid pictures similar to industrial sites. 5. The portable multi-feature industrial object simulation device according to claim 3, wherein the metal contact set is connected to the IO terminal of the control module. 6 . The portable multi-feature industrial object simulation device according to claim 4 , wherein the input end of the MV adjustment potentiometer and the signal line switching interface device is connected to the IO end of the control module. 7. A method utilizing the portable multi-characteristic industrial object simulation device according to any one of claims 1-6 to carry out different industrial object simulations and switching methods thereof, it is characterized in that, comprising the following steps: 1) Use cardstock printed with images of different industrial objects; 2) There is a small hole in the lower left corner of different cardstocks corresponding to the metal contact group in the card slot, and the position and number of holes are different for each card; 3) When the card is inserted into the card slot, the control module identifies the inserted card through the metal contact group; 4) The control module calls the corresponding simulation program to realize the simulation of the characteristic parameters of the object. 8. The industrial object simulation and switching method thereof according to claim 7, characterized in that: the simulation of different objects is carried out by identifying different pictures by the single-chip microcomputer control module.