CN1057396C - Digital regulating device - Google Patents

Abstract

The aim of the invention is to increase the applicability of the programmable type digital controller for process control whose control arithmetic function can be adapted to respective control systems by giving the high degree of freedom to the display function and operation function of a panel part. A internal storage means is provided with a display pattern block which has plural display pattern data and when a user program is generated, display patterns corresponding to respective control arithmetic functions are specified to display necessary display patterns in the information display area and operation name display area of the dot matrix display unit of the panel part consisting of the dot matrix display unit and an operation key group where no fixed name is displayed.

Description

Digital regulating device

The present invention relates to digital regulating device, particularly improved the programmable type digital regulating device of the people-machine performance of operation display panel part.

As the first existing example of programmable type digital regulating device, have to open and disclosed in the clear 62-74101 communique the spy.This digital regulating device is the panel board assembling form.Partly be provided with the TAGNo. display part at front panel; With LED segment figure indication PV (process variable) value and the digital indicator of SV (controlled target) value with MV (control output) value; The LED display part that shows the alarm state and the method for operation with indivedual LED; The operating key portion that forms by SV setting key and manual adjustments operating key and method of operation switch key etc.; The PV/SV scaleplate.Also have, circuit part mainly is made of the digital circuit that with the microprocessor is the center, has prepared to comprise the operation blocks of PID computing in tens interior kinds in digital regulating device inside based on software processes.Input signal and output signal are to have set a plurality of signals according to simulating signal and digital signal respectively.

When above-mentioned digital regulating device was applied to specific control system, the user can select essential being made up for obtaining the necessary control calculation function of corresponding control system in the middle of ready operation blocks, be compiled into user program, and deposit user ROM.Determined the digital regulating device of function, order according to user program, in each execution cycle, repeat to obtain the operating key portion of faceplate part information and input signal, control computing after, its result is presented on the faceplate part and this a series of actions of output signal output.

Can enumerate the spy as the second existing example and open flat 2-228702 communique.What the document disclosed is the peripheral unit of Programmable Logic Controller, so constitute on the guidance panel part, be provided with a plurality of switches and with the corresponding respectively display part of coming image to show each switching function distribution of these switches.And when changing the peripheral unit function, the function that also will change each switch is distributed, and meanwhile, the displaying contents whenever at this moment corresponding display part also changes.Its advantage is according to this apparatus structure, is effectively used by the switch change to Finite Number on purposes, and the while can be carried out suitable demonstration and is imbued with operability.

In prior art, first digital regulating device is for controlling operational performance owing to can be made so have high degree of freedom by user program.Yet exist such problem, show that promptly the degree of freedom of its result's the display performance of faceplate part and operating performance is low, although the user works out freely user program but still can't obtain gratifying people-machine performance aspect display operation.In other words, the control operational performance is made of software processes, and in contrast, the display operation performance then constitutes for hardware.And LED segment figure index gauge, digital indicator, indivedual light-emitting diode display and the operating key of having determined number be configured in respectively on the predetermined fixed position, also has to determine that good title is the printing expression.

Also have, the peripheral unit of second Programmable Logic Controller effectively utilizes switch seldom, thereby and the demonstration by making the display part can display switch can improve operating performance with the function distribution of each switch.Yet, in this peripheral unit, must be provided with and the corresponding display part of a plurality of switches, the display that each display part is used must individually be provided as the dedicated display of each switch regularly for each switch.Thereby the degree of freedom of operating performance and demonstration is still not too sufficient in this peripheral unit.

Digital regulating device product in recent years just develops towards user oriented direction.The problems referred to above are present in the advertising campaign of product widely and become serious obstruction.Particularly the automatic operation key in PID (ratio-integration-differential) accommodometer is ineffective, wants to adopt people-machine of using as manual setting apparatus that all requirements such as bigger change are partly arranged, and is essential and satisfy these requirements.

The object of the present invention is to provide a kind of Presentation Function that gives faceplate part and operating function with high-freedom degree more, improved the digital regulating device of operating performance.

Digital regulated counting of the present invention achieves the above object and is constructed as follows.A kind of have control computing treating apparatus and memory storage, and can change the programmable digital accommodometer of control calculation function to be applicable to that applied control system constitutes like this.Its formation is, on faceplate part, make the adjacent setting of operating key group and matrix display, each operating key corresponding operating key title viewing area and remaining part that the part of matrix display is assigned to the operating key group are assigned to information display area, in memory storage, comprise simultaneously display graphics piece program with multiple display graphics, during the establishment user program, specify necessary display graphics corresponding to the control calculation function, in information display area and operating key title viewing area, show.

According to digital regulating device of the present invention, by control computing treating apparatus and memory storage, be adapted to applied control system, the control calculation function is realized by user program, it is to make the adjacent setting with matrix display of operating key group that the display operation portion of faceplate part constitutes as hardware, the part of matrix display is assigned as the corresponding operating key title of each operating key viewing area with the operating key group, and remaining part is assigned to information display area.Make simultaneously and in memory storage, possess display graphics piece program with multiple display graphics, and when the establishment user program, specify necessary display graphics corresponding to the control calculation function, in information display area and operating key title viewing area, carry out necessary demonstration.Therefore, when the user can obtain the user program of necessary control calculation function in the applied control system (for example temperature, flow, pressure, liquid level control etc.) in establishment, can in display graphics piece program, select necessary display graphics and be assigned to user program simultaneously, and be stored among the user ROM.Based on such user program relevant that work out out and the user program relevant with the display graphics of matrix display with the control calculation function, the execution display graphics is handled, the display operation key name claims and the information display graphics in the operating key title viewing area of matrix display and information display area respectively, shows and the same picture of existing digital accommodometer.The operator proceeds to operation after this, just carries out the transition to the common action of digital governer.

As mentioned above, constitute display part by dot matrix, do not show fixed name for operating key, by being provided with as the user program of software processes display graphics piece, the user is when forming the control calculation function, can freely form picture to select to specify equally simple gimmick with operation blocks, the same display operation function with calculation function also becomes programmable, thereby has improved the degree of freedom of Presentation Function and operating function.

Fig. 1 is the oblique view that the digital regulating device outward appearance of one embodiment of the invention is shown.

Fig. 2 is the block scheme that the circuit in the accommodometer that is built in embodiment shown in Fig. 1 is shown.

Fig. 3 is the process flow diagram that is used for circuit working shown in the key diagram 2.

Fig. 4 is the front view (FV) that first example of the display graphics that the panel of embodiment shown in Fig. 1 cuts apart is shown.

Fig. 5 is the front view (FV) that second example of the display graphics that the panel of embodiment shown in Fig. 1 cuts apart is shown.

Below with reference to the description of drawings embodiments of the invention.

Fig. 1 is the outward appearance oblique view of embodiment of the invention digital regulating device, and Fig. 2 is the block scheme that the circuit structure that is built in digital regulating device inside is shown.

The Instrument structure of digital regulating device is to be contained in the rectangular parallelepiped box 1 and to be the panel board assembling structure.The front of box 1 is exactly the panel face that shows and operate usefulness.On this panel face, matrix display 2 and operating key group 3 are adjacent and dispose.The viewing area of matrix display 2 is formed by operating key title viewing area 2a and these 2 viewing areas of information display district 2b.In a broad sense, operating key title viewing area 2a forms the part of matrix display 2, and other remaining parts become information display area 2b.In the example that illustrates, the right side part of matrix display 2 is that the side that operating key group 3 is joined is assigned as operating key title viewing area 2a, and wide part is assigned as information display area 2b in the left side.Among the operating key group 3 a plurality of operating key 3a's of a vertical row ground configuration.Each operating key 3a does not give the title that relevant function is distributed in the present embodiment.Be that each operating key 3a does not have to show.The arrangement of operating key 3a among the operating key group 3 for example also can be disposed in lower, transverse.

The inner structure of digital regulating device all is shown among Fig. 2.2, be respectively aforementioned matrix display and operating key group shown in the 3 usefulness square frames.The 4th, input terminal portion, the 5th, output terminal part has the structure that can input or output a plurality of simulating signals and digital signal respectively.6 input handling parts for being made of traffic pilot and A/D translation circuit etc., 7 is the output processing part that is made of D/A translation circuit etc.The arithmetic processing section 8 that constitutes by CPU8a and internal storage 8b and shirking of leaning on that the instrument side the adorning user ROM8c that user program memory freely uses in middle body configuration.The side of user ROM8c box 1 in Fig. 1 is shown by dashed lines.In above-mentioned internal storage 8b, stored can obtain to control calculation function adopts nearly tens kinds operation blocks 8d with can obtain the display graphics of panel face and the display graphics piece 8e that the operating key title is adopted with multiple display graphics.Also between arithmetic processing section and matrix display 2, disposed display driver portion 9.

In the said structure, be input to arithmetic processing section 8 with the input signal of operating key group 3 generations and the various signals of operation signal by input handling part 6 from input terminal portion 4 respectively.The data of input are carried out the required data of calculation process generation according to the program that is stored among the user ROM8c.The data that generate in arithmetic processing section 8 are sent to output terminal part 5 via output processing part 7 as required, as simulating signal or digital signal output.Also have in the data that in arithmetic processing section 8, generate, in the information display area 2b of matrix display 2, show necessary data, and in specifying good control, be used for being sent to matrix display 2 via display driver portion 9 from arithmetic processing section 8 respectively with in operating key group 3, allowing indication and its title of the operating key that uses the object appointment be presented at the data of using in the operating key title viewing area.

Fig. 3 illustrates the workflow diagram of the digital regulating device with said structure.Digital regulating device is at first carried out start up process 11 according to the program of internal storage 8b when energized.Then confirm to be stored in the display graphics numbering of the user program 18 among the user ROM8c, carry out the display graphics of corresponding display graphics module 8e and handle 12.Display driver portion 9 receives its results from arithmetic processing section 8, respectively in the operating key title viewing area 2a and the information display area 2b display frame of matrix display 2.The display frame one of the panel part of digital regulating device is set up, and the operator just can carry out the setting of mode and control target.In digital regulating device, proceed to obtain the key input of the information that operators are given with operating key group 3 and handle 13 from input handling part 6, and the input signal processing 14 that obtains to be input to the information of input terminal portion 4 from input handling part 6.Then the data of input information are sequentially carried out the control calculation process 15 of the operation blocks 8d that indication is reserved in the user program in user ROM8c, its result carries out data presentation to the output data that draws and handles 16 and handle 17 with output signal.Handle in 16 in data presentation, output data is delivered to display driver portion 9, video data in information display area 2b, output data outputs to output terminal part 5 by output processing part 7 in output signal processing 17.After this corresponding to the operating key of operator's operation, for example repeat above-mentioned treatment step 13-17 in cycle second at 0.1-0.2.

In above-mentioned workflow, it is application targets according to digital regulating device that display graphics handles 12, at random selects in the various display modes any one to set up the display frame of matrix display 2 by the operator.At this moment, in operating key title viewing area 2a, show the title that the function of having indicated the corresponding operating key is distributed on the adjacent position as the operating key of any number of using object in operating key group 3.Thereby be to determine operating key with the corresponding relation that operating key title viewing area 2a leans on the key name of position and demonstration to claim by operating key group 3.After this, the operator only adopts the operating key that gives the demonstration of operating key title to operate.And the operating key that claims for display operation key name not, even, can not produce operation signal to its operation yet, though be use also inoperative.

Fig. 4 illustrates the display graphics example of control picture of the digital regulating device of present embodiment, and Fig. 5 illustrates the display graphics example of manual adjustments picture of the digital regulating device of present embodiment.In user program 18, the kind of this class picture of Fig. 4 or Fig. 5 is specified by the display graphics numbering.In addition, together specify the TAGNo. (TIC-101) of instrument simultaneously, the scale calibration, unit also is fine.Also have, as mentioned above, the occasion of utilization and operation mode C does not make the such change of showing of literal C be fine yet in the operating key of Fig. 4 picture.There is not the operating key that shows among the operating key title viewing area 2a, as mentioned above, owing to lock, even mistake is by also not obtaining as the input data.

In the demonstration example of Fig. 4, TAG.No shows 68.5 ℃ by TIC-101 procedure for displaying parameter (ProcessValue) PV.Controlled target (Set Value) SV shows 68.0 ℃.Also has control output MV indication 72%.FL means failure pilot lamp (Fail Lamp), and AL means alarm lamp (Alarm Lamp).SV in the operating key title viewing area 2a and MV use when changing controlled target and control output, and F then illustrates the bug (fast key) of quick transmission usefulness.Also have, A in operating key title viewing area 2a and M illustrate automated manner (Auto) and manual mode (manual) respectively.The bright automated manner that illustrates of A in Fig. 4, the bright manual mode that then illustrates of M in Fig. 5.

Fig. 5 is because be that manual mode does not just show controlled target SV certainly.

Also have, in as this class digital regulating device of present embodiment, the operator is provided with EEPROM or battery for the various parameters that protection when having a power failure configures in inside usually.Even the display frame that was therefore once configuring outage also need not protected data, set again.Also have, because operating key group 3 and the general identical right side that is configured in display frame of digital regulating device, and in the operating key title viewing area 2a of the adjacency of matrix display 2, show its title, so can be with the image manipulation similar with existing procucts, and operability is reduced.

As mentioned above according to present embodiment, by matrix display 2 with do not show that the operating key group 3 of fixed name constitutes the operation display part of faceplate part, and by being provided with the multiple display graphics piece of user program as software processes, the user just can be to select to specify same simple means to specify display graphics with operation blocks when making the control calculation function, can freely make picture, also become programmablely with control calculation function identical display operation function, and can on Presentation Function and operating function, obtain high degree of freedom.

Can consider following these variant embodiment in the present invention.Make operating key title viewing area 2a and operating key group 3 in abutting connection with distribution like this for matrix display 2 in the above-described embodiments, but be not limited thereto.Promptly operating key title viewing area 2a can be distributed to the optional position of matrix display 2.In this occasion, owing to can not adopt corresponding relation, be necessary additional identification symbol on each operating key and obtain corresponding relation by this distinguished symbol by position adjacent relation.

Also have the operating key group 3 itself neither be by the operating key change-over switch that fixes but by display device such structure is set and also is fine.In its formation of this occasion be the demonstration that the operating key change-over switch that promptly shows is respectively distributed with function.And can constitute like this, promptly only show the necessary operating key of measure control, and do not show unwanted operating key.In this occasion,, just also can produce and to guarantee the big such advantage of information display area if make the operating key concentrated area of demonstration be presented at the part of viewing area.

By above explanation, have obviously following effect according to the present invention.

Because can be to specify display frame and operated key title in the user program, with control fortune The identical display operation function of calculation function also becomes programmable, and product is to the application of control system The property increase, thus people-machine performance can be improved.

Also because of identical reason, the user purchases the product of many one species, can allow have The product of necessary function and picture is finished, and interchangeability and maintainability will improve.

Can also to manufacturer's designated user program, allow the user with underground user ROM's Method is used. This situation, manufacturer just can make a kind of product, and makes display frame Difference is sold. Thereby can improve the output of manufacturer, profit, stock and service.

Because display frame is dot matrix, the TAGNo. of instrument, scale calibration, unit etc. can be specified and demonstration by the user.The making of the special-purpose nameplate finished by manufacturer of this class has not in the past just needed, and is shortening product delivery date, is reducing under the situation of the valency of stocking up, change style and reduce formality and expense.

Forming at the picture of faceplate part is when only being made of the operating key group of matrix display and not expression, just can make form simply, the product bid is cheap.

Claims (8)

1. digital regulating device, be to have control computing treating apparatus and memory storage, can change the control calculation function to be applicable to the programmable digital regulating device of applied control system, this accommodometer is adjacent with matrix display on faceplate part to be provided with the operating key group, it is characterized in that, a described matrix display part is assigned as the operating key title viewing area corresponding with each operating key of described operating key group, remaining part outside the above operating key title viewing area of described matrix display then is assigned as information display area, comprise display graphics piece program in the described memory storage with multiple display graphics, when the establishment user program, specify necessary display graphics corresponding to described control calculation function, show in described information display area and described operating key title viewing area.

2. digital regulating device as claimed in claim 1, it is characterized in that, described operating key is not indicated, described operating key title viewing area is distributed in the described matrix display and described operating key group position adjacent, and made described operating key and described operating key title show corresponding providing.

3. digital regulating device as claimed in claim 1 is characterized in that, adds distinguished symbol on described operating key respectively, by described distinguished symbol, each the operating key title that demonstrates in the described operating key title viewing area is shown provide with described operating key is corresponding.

4. as claim 2 or 3 described digital regulating devices, it is characterized in that, even the operating key that does not exist respective name to show in described operating key title viewing area is that use is also inoperative.

5. digital regulating device as claimed in claim 1 is characterized in that applied control system is a temperature control system.

6. digital regulating device as claimed in claim 1 is characterized in that applied control system is a flow control system.

7. digital regulating device as claimed in claim 1 is characterized in that applied control system is a control pressurer system.

8. digital regulating device as claimed in claim 1 is characterized in that, applied control system is the liquid level control system.

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