CN201421670Y

CN201421670Y - Soft programmable controller

Info

Publication number: CN201421670Y
Application number: CN2009201486806U
Authority: CN
Inventors: 牛丽; 王勤宏; 李爱军
Original assignee: Suzhou Vocational University
Current assignee: Suzhou Vocational University
Priority date: 2009-04-01
Filing date: 2009-04-01
Publication date: 2010-03-10
Anticipated expiration: 2019-04-01

Abstract

The utility model discloses a soft programmable controller, which comprises an output module, a program input module, a compiling module, a virtual object module and an execution module, wherein the output module is used for displaying experimental results; the program input module is used for receiving to-be-tested source programs; the compiling module is used for compiling the to-be-tested source programs into to-be-tested target programs; the virtual object module is used for inputting virtual controlled signals and providing virtual controlled devices; the execution module is used for determining the state of the virtual controlled devices according to the inputted virtual controlled signals and calling target programs. Besides, the output module is further used for displaying the state of the virtual controlled devices, the program input module is connected with the compiling module, and the execution module is connected with the virtual object module, the compiling module and theoutput module. By employing a soft PLC to control virtual controlled objects so as to conduct simulation experiments, the soft programmable controller is capable of helping students deeply understandthe working principle and the application method of the PLC and also realizing multimedia assistant teaching and remote experiments.

Description

A kind of soft programmable controller

Technical field

The utility model relates to a kind of soft programmable controller, and (PROGRAMMABLE LOGICCONTROLLER PLC), belongs to instrument field.

Background technology

PLC has become one of major control device of contemporary industry robotization because it is powerful, easy to use, has almost all obtained using widely at industrial all spectra, has also obtained development rapidly at other fields such as civilian and home automations.

In this case, many science and engineerings institution of higher learning, vocational school and social training school, especially the specialty that robotization is relevant can be understood and grasped this system for making the student, make it have stronger manipulative ability and technical capability, in the laboratory, set up mostly or prepared and introduced and set up the PLC experimental system, even built special-purpose PLC system experimentation chamber.Yet, at present in field research, because the PLC that is sold on the market is compatible to each other relatively poor, and also be subjected to the restriction of many conditions such as volume, model, price, under funds are not very abundant situation, be difficult in and be equipped with the PLC that quantity is many, model is complete in the laboratory, simultaneously also because the outside input and output connection device of PLC can be the Industry Control object of various ways, so also being difficult to provides comparatively comprehensively controlling object for existing P LC system, this certainly will influence the experiment content of PLC experiment, the experiment effect of restriction PLC experiment.Further, the PLC product along with electronic technology to develop update rapidly also very fast, also need high expense in order to safeguard and to upgrade experiment PLC system.

In order to address the above problem, introduced emulation technology in the prior art, utilize various virtual instruments and equipment to replace the teaching that experimentizes of valuable PLC hardware device, for example the applying date is on July 4th, 2007, application number is 200720039039.X, denomination of invention discloses a kind of PLC simulated teaching device for the Chinese patent of " PLC simulated teaching device ", be used for the PLC of institution of higher education emulation experiment, wherein: the service data of PLC is imported computing machine by data interface card, and be reflected on the man-machine interface of virtual emulation software, the instruction that the learner imports on human-computer interaction interface also can pass to programmable logic controller (PLC) by data interface card, to control its method of operation.But, in above-mentioned public technology, owing to be the virtual controlled device of hardware PLC control,, must need to possess comparatively complicated hardware environment, and can not solve the problem of tele-experimentation so need more external unit connect control during experiment.

The utility model content

The technical problems to be solved in the utility model is to propose a kind of soft programmable controller, can simplify hardware device configuration and external interface configuration in the PLC experimentation.

In order to achieve the above object, the utility model proposes a kind of soft programmable controller, comprising:

Be used to show the output module of experimental result, described soft programmable controller also comprises: the program load module that is used to receive source program to be measured, be used for described source program to be measured is compiled into the collector of target program to be measured, be used to the virtual objects module importing virtual manipulated signal and virtual controlled device is provided, be used for virtual manipulated signal according to input, the invocation target program is determined the execution module of virtual controlled device state, described output module is used to show virtual controlled device state further, described program load module is connected with described collector, described execution module and described virtual objects module, described collector, described output module all connects.

In the soft programmable controller described in the utility model, described output module is the literal display.

In the soft programmable controller described in the utility model, described output module is an image display.

In the soft programmable controller described in the utility model, the source program to be measured that described program load module receives is statement list and the outside input of ladder diagram by programmable logic controller (PLC).

In the soft programmable controller described in the utility model, described collector presets corresponding coupling compile mode according to the hard programmable logic controller (PLC) model of required emulation.

In the soft programmable controller described in the utility model, described virtual objects module is the activex control group preferably.

In the soft programmable controller described in the utility model, utilize the scan round of multimedia real time clock realization in the described execution module to described collector.

In the soft programmable controller described in the utility model, described program load module by network with it is upgraded the outside preset to update the equipment and be connected.

In the soft programmable controller described in the utility model, described output module presets display device by network with the outside of its output being carried out long-range demonstration and is connected.

In the soft programmable controller described in the utility model, described virtual objects module by network with it is imported outside that virtual manipulated signal and virtual controlled device carry out long-range setting and presets commissioning device and be connected.

Compared with prior art, the utility model utilizes soft PLC to simulate needs the hard PLC model of emulation, and control virtual controlled device and carry out emulation experiment, to replace existing P LC hardware experiments device, this can not only help student's profound understanding PLC principle of work and methods for using them effectively, can also reduce the experimental cost input; On the other hand, the soft PLC that utilizes the utility model and proposed also can realize Multimedia assisted instruction, tele-experimentation easily.

Description of drawings

Fig. 1 is the structural representation of soft Programmable Logic Controller described in the utility model.

Embodiment

Those skilled in the art below in conjunction with the drawings and specific embodiments the utility model made further detailed description, so that can implement according to this after consulting this instructions.

As shown in Figure 1, a kind of soft PLC comprises: program load module 1, programming module 2, virtual controlled device module 3, execution module 4, output module 5, wherein:

Program load module 1 is used to receive the source program of importing by statement list or the trapezoidal pattern programming of PLC to be measured;

Collector 2 is used for according to the emulation PLC type of setting source program to be measured being carried out morphology, grammatical and semantic etc. analyses and checks that compiling generates target program to be measured; Described collector can be that those skilled in the art utilize prior art design, perhaps adopts existing module of the prior art to realize;

Virtual objects module 3, be used for the Virtual Space storing virtual object that makes up in advance, and according to the selected virtual controlled device of the input virtual information of outside, the foundation of described virtual controlled device is that those skilled in the art utilize multimedia of the prior art and software development technique to realize, preferably the activex control group; It can be the virtual objects and the various possible input signal of any output peripheral equipment of setting;

Execution module 4 is used for according to the touring output state that scans input, determines virtual controlled device of object code; Preferably, can utilize thread programming and high-precision multimedia real time clock technology to realize scanning process;

Output module 5 is used to export the control result of described virtual controlled device state, so that the experimenter debugs for control program; Say further, described output module is that literal shows output module, it can utilize the mode of character express to show the control result of virtual objects, perhaps described output module can show output module for image, the mode of utilizing image to export shows the control result of virtual objects, preferably, described image information can be an animated graphics information.

Described program load module is connected with described collector, and described execution module all is connected with described virtual objects module, described collector, described output module.

In order better to describe the course of work of above-mentioned soft PLC controller, be described as follows with example further:

In the process of experimentizing, determine that at first soft PLC needs the hard PLC model of emulation, corresponding programming language in definite thus outside receiver module 1 and the corresponding compilation process in the PLC programming module 2 are determined the virtual I/O device in the virtual controlled device module 3;

In program load module 1, for example with the statement list input source program; After this, PLC programming module 2 is treated the test source program according to default emulation PLC type and is carried out analysis inspections such as morphology, grammatical and semantic, compiling generates target program to be tested, be exemplified as further: the operation of statement list program is actually Boolean calculation, operand is various relay variablees, the computation process that can be whole procedure is set up the calculating storehouse and is initialized as sky, when expression formula has not also been calculated, carry out read operation always, if what read is operand, then deposit it in operand stack; If what read is operational symbol, then from operand stack, take out the action required number and calculate, result of calculation is deposited back storehouse, when expression formula read finish after, the content of operand stack is the operation result of expression formula just; Realize compilation process thus.

Execution module 4 according to dummy pilot signal scan round import the state that object program to be tested is determined virtual O device, and offer output module 5.

In the above-described embodiment, virtual controlled device can be the corresponding A ctivex control of any external units such as pilot lamp, solenoid valve as required.Because what PLC will realize is the expectant control logic, just can obtain correct output result so must carry out correct program, that is to say and whether consistently to come determining program whether correct with expecting according to the output result of last output module.

In a further embodiment, can also carry out following improvement to the foregoing description:

Described program load module can by network with its source program to be measured is upgraded the outside preset to update the equipment and be connected, the convenient thus long-range modification of program of carrying out;

Described output module can preset display device with the outside of its output being carried out long-range demonstration by network and be connected, and conveniently carries out long-range experiment effect monitoring thus;

Described virtual objects module can by network with it is imported outside that virtual manipulated signal and virtual controlled device carry out long-range setting and presets commissioning device and be connected, so that carry out the non-at-scene renewal of virtual manipulated signal and virtual controlled device, improved the adaptability of this soft PLC.

Claims

1. soft programmable controller comprises: is used to show the output module of experimental result, it is characterized in that,

Described soft programmable controller also comprises:

Be used to receive the program load module of source program to be measured,

Be used for described source program to be measured is compiled into the collector of target program to be measured,

Be used to the virtual objects module importing virtual manipulated signal and virtual controlled device is provided,

Be used for according to the virtual manipulated signal of input, the execution module that the invocation target program is determined virtual controlled device state,

Described output module is used to show virtual controlled device state further, and described program load module is connected with described collector, and described execution module all is connected with described virtual objects module, described collector, described output module.

2. soft Programmable Logic Controller as claimed in claim 1 is characterized in that, described output module is the literal display.

3. soft Programmable Logic Controller as claimed in claim 1 is characterized in that, described output module is an image display.

4. soft Programmable Logic Controller as claimed in claim 1 is characterized in that, the source program to be measured that described program load module receives is statement list and the outside input of ladder diagram by programmable logic controller (PLC).

5. soft Programmable Logic Controller as claimed in claim 1 is characterized in that, described collector presets corresponding coupling compile mode according to the hard programmable logic controller (PLC) model of required emulation.

6. soft Programmable Logic Controller as claimed in claim 1 is characterized in that, described virtual objects module is the activex control group preferably.

7. soft Programmable Logic Controller as claimed in claim 1 is characterized in that, utilizes the scan round of multimedia real time clock realization to described collector in the described execution module.

8. soft Programmable Logic Controller as claimed in claim 1 is characterized in that, described program load module by network with its source program to be measured is upgraded the outside preset to update the equipment and be connected.

9. soft Programmable Logic Controller as claimed in claim 1 is characterized in that, described output module presets display device by network with the outside of its output being carried out long-range demonstration and is connected.

10. soft Programmable Logic Controller as claimed in claim 1 is characterized in that, described virtual objects module by network with it is imported outside that virtual manipulated signal and virtual controlled device carry out long-range setting and presets commissioning device and be connected.