CN201374003Y

CN201374003Y - Multi-device monitor

Info

Publication number: CN201374003Y
Application number: CN200920088885U
Authority: CN
Inventors: 吴晓北; 刘文敬
Original assignee: Ureika (henan) High Science & Technology Development Co Ltd
Current assignee: Ureika (henan) High Science & Technology Development Co Ltd
Priority date: 2009-03-10
Filing date: 2009-03-10
Publication date: 2009-12-30
Anticipated expiration: 2019-03-10

Abstract

The utility model relates to a man-machine interface device used on a PLC, in particular to a multi-device monitor which can connect a plurality of PLCs. The multi-device monitor comprises a liquid crystal display (LCD), wherein a touch screen is arranged in front of the LCD, the LCD and the touch screen are connected with a CPU which is connected with an internal memory, a program memory and two or more output communication interfaces, and configuration software is cured in the program memory. The multi-device monitor can realize that one monitor can monitor a plurality of on-site equipment simultaneously, thus reducing the equipment procurement costs of users, and improving the efficiency of on-site equipment management and coordination.

Description

Multi-device monitor

Technical field

The present invention relates to the human interface device on a kind of PLC of being used for, relate in particular to a kind of multi-device monitor that can connect a plurality of PLC.

Background technology

Along with the develop rapidly of industrial automation, the kind of commercial unit also becomes increasingly abundant, and the production line of the industrial different demands of various adaptations has been formed in complicated and diversified equipment collaboration work, has improved industrial automaticity greatly.But the thing followed, the equipment so many in the face of quantity, that kind is so abundant, artificial mode of inspecting obviously can not satisfy the demand of the modernization of industry, and how high-efficiency and low-cost ground monitors, manages, coordinates plurality of devices simultaneously becomes a difficult problem in the automated process.

Ways of addressing this issue is machine and the on-the-spot commercial unit communication by operation monitoring software at present, obtains field data and is shown to the user in patterned mode.The method has improved monitor visual greatly.But the method can only monitor an equipment, the field apparatus of facing One's name is legion then needs the surveillance equipment of respective numbers just can reach the comprehensive of supervision, on the one hand, the state of checking each equipment need go different surveillance equipments just can check, can not carry out integral body to adjacent or associated device simultaneously and check all sidedly so that systematically analyze, manage; On the other hand, the surveillance equipment of One's name is legion needs high cost, and maintenance cost is also higher.

Summary of the invention

The purpose of this invention is to provide a kind of multi-device monitor, it can realize that a watch-dog monitors many field apparatuss simultaneously, has reduced user's equipment purchase cost, has improved management, has coordinated the efficient of field apparatus.For solving the problems of the technologies described above, the present invention includes: LCD, touch-screen is set before the LCD, display is connected CPU with touch-screen, and CPU connects internal storage, program storage and the outputting communication interface more than 2 or 2.

The present invention adopts and a plurality of outputting communication interfaces is set on the monitor and cooperates configuration software, thereby connect many PLC, realized that a watch-dog monitors many field apparatuss simultaneously, reduced user's equipment purchase cost, improved management, coordinated the efficient of field apparatus.

Description of drawings

Fig. 1 is the hardware system block diagram of first kind of embodiment of the present invention

Fig. 2 is the program flow diagram of second kind of embodiment of the present invention

Fig. 3 is the device connection diagram of first kind of embodiment of the present invention

Embodiment

First kind of embodiment of the present invention: the present invention adopts LCD as shown in figures 1 and 3, touch-screen is set before the LCD, LCD is connected CPU with touch-screen, CPU connects sdram memory reservoir, FLASHROM program storage and outputting communication interface, and CPU adopts ARM9 series nucleus module; LCDs adopts high-resolution TFT; Touch-screen is equipped with 4 wire resistance type touch-screens; The outputting communication interface adopts RS232, RS485 or CAN interface and PLC real-time communication.The connecting circuit of CPU and internal storage and program storage is a prior art, and the outputting communication interface circuit also is a prior art.The connecting circuit of LCD and touch-screen and CPU is a prior art.

It is as follows that configuration software is solidificated in the program storage of liquid crystal display display its step:

(1) CPU judges in timeslice whether current outputting communication interface is connected with PLC, if the outputting communication interface is connected with PLC, then ask PLC with the once unbroken internal storage of passing back of the equipment chained list in the common storage area in the PLC storer, if the outputting communication interface does not connect PLC, then output is made as current outputting communication interface to the next one;

A PLC equipment chained list that (2) will import into is incorporated the equipment chain summary table into;

(3) under the control of CPU with the record of each equipment of correspondence in each equipment chained list in the equipment chain summary table, show in the same page or the more than one page by the mode of display with pel;

Repeat the above-mentioned steps of (1)-(3) every 90-100ms by CPU control;

With

(a) when the user represents the pel of particular device parameter by showing on the touch-screen liquid opaque crystal display, amended new equipment information is passed to control module by the touch-screen driver, current data item in the equipment records of control module renewal pel corresponding equipment chain summary table equipment chained list, then by the priority of CPU judgment device chained list, successively amended equipment chained list is passed through the outputting communication interface according to priority orders again, be returned to the common storage area in the corresponding PLC storer.

Equipment chained list in the PLC storer is disclosed data structure in the prior art.

Pel is for being used for picture, form, the literal expression form that representative equipment and equipment state and equipment state are adjusted on display.Pel is by setting up corresponding relation between chained list and equipment chained list, makes to set up between pel and PLC field apparatus with relation, also can realize control to equipment by the setting to primitive attribute simultaneously.The representation of pel is convenient to the state that the user gets information about the equipment of PLC control, and conveniently equipment is carried out necessary control.

The present invention can show in the same page or the more than one page and mainly comprises following pattern for being connected PLC on the different outputting communication interfaces: (a) circulation shows: each page is related with a PLC of connection, and a plurality of pages that edit show by certain loop cycle.Periodically read the content of each page and show according to display requirement with by the dynamic data that the data that communication module obtains are carried out the interface.(b) many pictures show simultaneously: each forms is related with a PLC, and the user can show a plurality of forms subregion on display screen simultaneously, is equivalent to have a plurality of small displays like this, and the user just can monitor the operation conditions of multiple devices simultaneously.System calls corresponding pagefile successively and carries out corresponding convergent-divergent according to the size of viewing area according to user's demand, intactly shows corresponding content of pages in corresponding zone.(c) make up demonstration: equipment running status global concept with a production line on a screen that a plurality of PLC that will be associated connect shows, and makes the user to whole production line a comprehensively understanding be arranged.Displaying contents in page can be associated with a plurality of equipment.Regularly upgrade the data of each equipment and carry out corresponding image demonstration according to the data that communication module obtains.(d) classification shows: similar equipment is shown in same screen to do contrast or unified management.Carry out the demonstration of corresponding manner according to the content of pagefile and the data of communication module acquisition.

Second kind of embodiment of the present invention: the hardware configuration of second kind of embodiment is identical with first kind of embodiment, just adds storage and playback module in the configuration program of first kind of embodiment, and is as follows as its step of Fig. 2:

Repeat the above-mentioned steps of (1)-(3) every 90-100ms by CPU control;

With

Also comprise storage and playback module with described configuration software, its step is as follows:

Memory module is the user to be activated this pel to the time period that the user stops activating according to the storage pel of onsite user's selection:

A. in program storage, create a storage file;

B. data link table is added the current time, add in the storage file successively;

C. the filename with storage file adds the storage chained list;

Playback module is the playback pel that the onsite user is selected, and the content of storing chained list is presented on the screen:

(I), the end time data item of the storage file of correspondence and first time data item subtracted each other determine the storage duration, and be presented on the screen by the duration pel according to the record in the selected storage chained list;

(II), will find with the immediate data link table of duration pel according to the duration pel;

(III) data link table in (II) is deposited in covering legacy data chained list in the internal storage.

The data item bag of storage chains table record: recording mechanism, filename, storage class.Storage class is: manually storage, static out-of-limit storage, dynamic out-of-limit storage, unusual storage.What present embodiment adopted is manual memory module.Manually memory module is when the user need store, and meeting of the present invention is created a new storage file automatically and data are write file and stops storage until the user.

The third embodiment of the present invention: the hardware configuration of the third embodiment is identical with first kind of embodiment, just adds storage and playback module in the configuration program of the third embodiment, and its step is as follows:

Repeat the above-mentioned steps of (1)-(3) every 90-100ms by CPU control;

With

Memory module be will according to pel set initial about, the limit parameter, when pel corresponding equipment currency exceed initial about, the scope of limit parameter, the program that the user is activated following steps until the equipment currency fall into initial about, in the scope of limit parameter:

A. in program storage, create a storage file;

C. the filename with storage file adds the storage chained list;

What present embodiment adopted is static out-of-limit memory module: the user is when the initial setting up parameter, and certain register of arranging certain equipment also is the upper and lower bound of certain variable.When in operational process, data have exceeded this scope, and it is normal until data that meeting of the present invention begins to store data automatically.

Or dynamic out-of-limit memory module: the user sets the scalar of the transverse axis and the longitudinal axis.Can set the transverse axis under the normal condition and the data value of the longitudinal axis by hand, can be standard with the normal data of dynamically recording also.Dynamically recording begins, and then native system can write down each data relationship of the transverse axis and the longitudinal axis automatically, thereby demarcates the dynamic upper and lower bound under the various situations, is an envelope diagram.When data have exceeded the upper limit or lower limit, then begin to store data until normally.

The present invention is based on embedded technology, utilize a plurality of hardware communication interfaces and technology such as real-time data base and device association to realize that a watch-dog can carry out communication to multiple devices simultaneously, make the user monitor the operation conditions of multiple devices simultaneously at a watch-dog, be convenient to multiple devices are unified to check and manage, provide cost savings, improve efficient, strengthened the comprehensive of monitoring scene; Utilize the administrative skill of pagefile to realize that a plurality of interfaces of monitor under different presence states freely switch and plurality of display modes, improved the utilization factor of a monitor; Adopt multithreading to make the multi-tasks such as data communication, picture demonstration satisfy real-time requirement; Each communication interface has been distributed priority, and the priority of first communication interface is the highest, and the priority of last communication interface is minimum, when needs and a plurality of equipment carry out communication and show, just can make response fast to important or urgent equipment.

Claims

1. multi-device monitor, comprise LCD, touch-screen is set before the LCD, display is connected CPU with touch-screen, CPU connects internal storage and program storage, it is characterized in that: described CPU connects the outputting communication interface more than 2 or 2.