CN202929418U

CN202929418U - PLC (Programmable Logic controller) based control circuit realizing point inspection for monitors

Info

Publication number: CN202929418U
Application number: CN 201220508983
Authority: CN
Inventors: 陈应华
Original assignee: YUNNAN QUJING SHUANGYOU STEEL CO Ltd
Current assignee: YUNNAN QUJING SHUANGYOU STEEL CO Ltd
Priority date: 2012-10-07
Filing date: 2012-10-07
Publication date: 2013-05-08
Anticipated expiration: 2022-10-07

Abstract

The utility model relates to a PLC based control circuit realizing point inspection for monitors. Each device requiring tour inspection is equipped with a tour inspection button SB with a lamp, the button SB is connected with a PLC system (1) via a cable (5), and the PLC system (1) is connected with a switch board (3) and then connected with a computer (4) via Ethernet cables (2). The control circuit can be used for tour inspection of multiple points in one workshop or multiple running devices in multiple workshops, wherein one or more PLC systems can be connected to one or more computers via Ethernet or optical fibers, so as to provide convenience for unified management and save investment and running cost for managers.

Description

Realize the control circuit of PLC monitoring employee spot check

Technical field

The utility model belongs to a kind of control circuit of the PLC of realization monitoring employee spot check.

Background technology

Enterprise patrols and examines in each work position and continues to use a traditional way of patrol of cover always, and the route of patrol, time, frequency, density are all unreasonable, and the patrol personnel are hard to tell primary and secondary, can not find emphasis, just rule of thumb go on patrol, personnel's repetition and waste is often got half the result with twice the effort; Part patrol personnel lack a sense of responsibility in addition, can not on request route and time go patrol; Particularly the leader of enterprise comes off duty not when plant area, some employee is patroling for arrived in position on time, causes patrol work band to bear the character of much blindness and passivity, affects production operation, equipment safety operation, drop into a large amount of human and material resources, but do not reached due working effect.

Summary of the invention

The purpose of this utility model is exactly the control circuit that discloses a kind of PLC of realization monitoring employee spot check; To solve the problem that occurs in the enterprises inspection management.

Take following scheme to realize:

Realize the control circuit of PLC monitoring employee spot check, that carries out mounting strap lamp on each equipment of walkaround inspection at need patrols and examines button SB, with cable, button SB is connected with the PLC system, with ethernet line, the PLC system is connected with switch, then connects and composes with computer.Compile a code for each button; In computer, the code of each button and device name are input in computer, also set simultaneously numbering and the device name of button in the PLC system.Make numbering and the title of button in button numbering and title in the button, computer of inspection point provided, PLC system, the three is corresponding one by one.In the software of computer the Time alignment of each point out, and the PLC programmed.Can use.

The technical program can be used for a plurality of points in a workshop and a plurality of operational outfits in a plurality of workshops are patrolled and examined, available one or more PLC system, by Ethernet or optical fiber be connected on one or more computer, give supvr's unified management, reduce investment outlay, operating cost provides convenience.

Description of drawings

Fig. 1 is the control circuit schematic diagram of realizing PLC monitoring employee spot check.

Fig. 2 is the spot check example record sheet that a workshop utilizes the technical program.

Embodiment

Below in conjunction with accompanying drawing, as embodiment, the realization of technical scheme and the application in spot check work are explained.

With reference to Fig. 1, the control circuit of PLC monitoring employee spot check, the equipment that carries out walkaround inspection at need are installed button with lamp and (when being to allow the employee patrol and examine with " patrolling and examining button " with lamp, are confirmed that the some signal of oneself patrolling and examining has been delivered in PLC; If signal is not delivered in PLC and gone, the lamp of " patrolling and examining button " can be not bright), and compile what a address code to button, in PLC system (1) and in computer (4), that the address code of button is corresponding one by one simultaneously, and the processing of classifying.When the personnel of patrolling and examining patrol and examine, press the button (the rear button spring backspace of letting go) to patrolling and examining the button place, patrol and examine button and by the good line of cloth, signal is conveyed into PLC, PLC and computing machine are verified signal, count monitoring time (time cannot revise) each time, and can graphically show the each point situation on computers, clear and intuitive.

The PLC automatic programming, process control software adopts Siemens STEP7 5.4 (or other kind); Host computer develops software and adopts simatic WINCC 6.0 (or other kind).Specific practice is as follows:

1. install the button with lamp in each place that need carry out walkaround inspection, and be numbered with code.As: a button SB is installed on " recirculated water return water temperature " side.

With cable with button SB with meet PLC system 1 and couple together.

3. with ethernet line 2, PLC system 1 is connected with switch 3; Ethernet line 2 is connected computer 4 use with switch 3.

4. in computer 4, the numbering of button and name are weighed in computer, also set simultaneously numbering and the title of button in PLC system 1.Make numbering and the title three of button in button numbering and title in the button, computer of inspection point provided, PLC system 1 all corresponding one by one.

5. in the WINCC6.0 of computer software the Time alignment of each point out.And the PLC programmed.

If 5.1 demonstrate the time writing time (stipulated time be generally after time on schedule 20 minutes within, also can come the stipulated time according to different production requirements) in the monitoring time of regulation.

5.2 exceed schedule time, the lower time of computer record also highlights the time with different colours.With reference to Fig. 2, for example 12, water-cooling tower liquid level/3:00, represent that this point patrols and examines at 3:21, exceeded schedule time 1 minute, so highlight the time with black surround line (actual in computer with grey black or other color of easily distinguishing) in table.

6. computer 4 can store the spot check table of every day, and convenient later event is reviewed.

Can record exactly the personnel's of patrolling and examining monitoring time, number of times and circuit, have and use characteristic flexible, simple to operate and with strong points, have high use value for supervision, standard and the raising work of patrolling and examining.Make to patrol and examine with management work and become simply, become intuitively, become easily by heavy by blindness by complexity.

Claims

1. realize the control circuit of PLC monitoring employee spot check, it is characterized in that patrolling and examining button SB what need carried out mounting strap lamp on each equipment of walkaround inspection, with cable (5), button SB is connected with PLC system (1), with ethernet line (2), PLC system (1) is connected with switch (3), then connects and composes with computer (4).