CN108594051A - A kind of electrical equipment malfunction automatic testing method and system - Google Patents
A kind of electrical equipment malfunction automatic testing method and system Download PDFInfo
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- CN108594051A CN108594051A CN201810756693.5A CN201810756693A CN108594051A CN 108594051 A CN108594051 A CN 108594051A CN 201810756693 A CN201810756693 A CN 201810756693A CN 108594051 A CN108594051 A CN 108594051A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
Abstract
The present invention discloses a kind of electrical equipment malfunction automatic testing method and system, and each fault point of electrical equipment is separately connected by each first ports I/O PLC；PLC connects electrical equipment by the second I/O port and detects driving signal output end simultaneously；Program is stored in PLC internal composition fault detects, each line state signal of each fault point is detected in the case where there is electrical equipment drive signal, and stored.Each line state signal is grouped, and is directed to every group of status signal, turn word function by position switchs to 1 output word state by every group of status signal；For final host computer according to the information in each output word state, whether each line state signal obtained in each group status signal is fault-signal, learns whether the electrical equipment malfunction point that each first I/O ports of PLC are connected breaks down.The present invention can fast and accurately detect the failure problems that electrical equipment occurs, and greatly improve the working efficiency of electrical equipment malfunction detection.
Description
Technical field
The present invention relates to electric fault service technique field, more particularly to a kind of electrical equipment malfunction automatic testing method and
System.
Background technology
It when electrical equipment breaks down at present, mainly examined, divided for phenomenon of the failure by professional
Analysis, then diagnoses fault reason.This process needs, which take a significant amount of time, searches fault point, and working efficiency is extremely low, and to skill
Art personnel's skill set requirements are higher, are not easy to ensure the accuracy of diagnostic result.
When usually debugging, used step is broadly divided into：Symptom analysis, equipment inspection determine fault point, event
Behavioral observation after barrier is excluded and excluded, because electric fault phenomenon is diversified, for example, same class failure may be different
Phenomenon of the failure, different faults may have a phenomenon of the failure of the same race, the homogeneity and diversity of this phenomenon of the failure, to searching failure
Bring complexity.
Invention content
The first object of the present invention is the shortcomings that overcoming the prior art and deficiency, and it is automatic to provide a kind of electrical equipment malfunction
Detection method, by this method can failure problems that are accurate and being quickly detected electrical equipment appearance, and can it is automatic,
Quickly and displaying in real time detects obtained failure, greatly improves the working efficiency of electrical equipment malfunction detection.
The second object of the present invention is to provide a kind of failure problems that electrical equipment that realizing the above method occurs.
The first object of the present invention is achieved through the following technical solutions：A kind of electrical equipment malfunction automatic testing method, step
It is rapid as follows：
Step S1, each fault point of electrical equipment is separately connected by each first ports I/O PLC；PLC passes through the simultaneously
Two I/O ports connect electrical equipment and detect driving signal output end；
Program is stored in PLC internal composition fault detects, PLC executes fault detect and stores program, carries out following processing：It will
The input results of each first I/O port carry out logical AND operation with the input results of the second I/O port respectively, obtain each logical AND behaviour
Result after work；Result after being operated according to each logical AND gets each line state signal；Wherein each I/O port, which corresponds to, to be obtained
To status signal all the way；
Step S2, obtain status signal total way N, N line state signals are divided into it is multigroup, wherein every group of status signal
The way of middle status signal is less than or equal to 16；
Step S3, be directed to every group of status signal, by position turn word function will wherein multichannel status signal it is corresponding multiple
Information bit state switchs to 1 output word state STATE；
Step S4, host computer reads each output word state STATE of PLC；Host computer is according in each output word state STATE
Information, whether each line state signal got in each group status signal is fault-signal, to obtain each first ends IO PLC
Whether the electrical equipment malfunction point that mouth is connected breaks down.
Preferably, PLC internal faults detection storage program include logical AND operating function, detection rising edge operation function and
Store operating function；
In the step S1：
First by logical AND operating function for the first I/O port input results and the second I/O port input results into
Row logical AND operates, and obtains logical AND operating result；
Then whether detection rising edge operation Function detection current logic occurs saltus step with operating result；If saltus step occurs,
Useful signal is then generated, and useful signal is kept to continue in certain time interval T, otherwise generates invalid signals；
Finally storage operating function then using the useful signal as status signal, and is protected when detecting useful signal
Constant, the reset signal until detecting PLC inputs is held, then will export invalid signals as status signal；
In the step S4, when status signal is useful signal, then host computer passes through the corresponding output that it is converted into
The correspondence position of word state STATE judges the status signal for fault-signal, and it is electrical to determine that PLC the first I/O ports of correspondence are connected
Equipment fault point breaks down.
Further, the T is a PLC cycle period.
Further, the PLC internal faults detection storage program further includes closing delay operating function；
In the step S1 input results of the second I/O port by close delay operation after again by with the first I/O port
Input results carry out logical AND operation；Wherein the input results of the second I/O port carry out closing the detailed process for postponing operation such as
Under：
When the input results of the second I/O port export useful signal, detection comes into force, and the input results of the second I/O port are straight
It connects and carries out logical AND operation with the input results of the first I/O port；
Become invalid signals when the input results of the second I/O port are exported from useful signal, then closes delay operating function and open
Dynamic internal time ET, when internal time ET reaches PT values, the input results for generating invalid signals and the first I/O port are patrolled
It collects and operates；
The logical AND operating function is for the result exported after the input results of the first I/O port and closing delay operation
Logical AND operation is carried out, logical AND operating result is obtained；
The PT is more than a PLC cycle period.
Further, the useful signal is high level signal, and invalid signals are low level signal；Or it is described effective
Signal is low level signal, and invalid signals are high level signal.
Preferably, further comprising the steps of, after each line state signal in every group of status signal is carried out logic or operation
A carry-out bit state F_STATE is obtained, each carry-out bit state F_STATE that every group of status signal is corresponded to carries out logic
Or operation；
Host computer read PLC in each carry-out bit state F_STATE logics or operation after as a result, according on the output control
Position machine man-machine interface pops up fault message display window.
The second object of the present invention is achieved through the following technical solutions：A kind of electrical equipment malfunction automatic checkout system, packet
PLC and host computer are included, each first ports I/O of the PLC are separately connected each fault point of electrical equipment, each for receiving
The signal that fault point is sent；PLC connects electrical equipment by the second I/O port and detects driving signal output end simultaneously, for receiving
Drive signal；
Include fault detect memory function module FDS inside the PLC, program is stored for PLC for storing fault detect
It calls, it is by storing fault detect storage program realization that the input results of each first I/O port are defeated with the second I/O port respectively
Enter result and carry out logical AND operation, obtains after each logical AND operation as a result, and being obtained according to the result after the operation of each logical AND
Get each line state signal；Wherein each I/O port correspondence gets status signal all the way；Total road for obtaining status signal
Number N, and N line state signals are divided into it is multigroup, wherein the way of status signal is less than or equal to 16 in every group of status signal；With
In being directed to every group of status signal, the corresponding multiple information bit states of multichannel status signal therein are switched into 1 output shape
State STATE；
The host computer connects PLC, each output word state STATE for reading PLC；For according to each output word state
Information in STATE, whether each line state signal got in each group status signal is fault-signal, to obtain PLC each
Whether the electrical equipment malfunction point that one I/O port is connected breaks down.
Preferably, the fault detect memory function module FDS includes：
Logical AND operating function modules A ND, the input for input results and the second I/O port for the first I/O port
As a result logical AND operation is carried out, logical AND operating result is obtained；
Rising edge operation function module R_TRIG is detected, for detecting whether current logic occurs saltus step with operating result；
If saltus step occurs, useful signal is generated, and useful signal is kept to continue in certain time interval T, otherwise generates invalid signals；
Store operating function module SR；For when detecting useful signal, then using the useful signal as status signal,
And it remains unchanged, the reset signal until detecting PLC inputs then exports invalid signals as status signal；
Status signal grouping module, total way N for obtaining status signal, and N line state signals are divided into more
Group；
Position turns word function module, for being directed to every group of status signal, multichannel status signal therein is corresponding multiple
Information bit state switchs to 1 output word state STATE.
Further, the fault detect memory function module FDS further includes：
Delay operating function module TOF is closed, carries out closing delay operation, tool for the input results to the second I/O port
Body is：When the input results of the second I/O port export useful signal, detection comes into force, and closes delay operating function module for straight
Connect output the second I/O port input results, by its second I/O port directly exported input results and the first I/O port it is defeated
Enter result and carries out logical AND operation；Become invalid signals when the input results of the second I/O port are exported from useful signal, then closes
Postpone operating function module and start internal time ET, when internal time ET reaches PT values, generates invalid signals and the first ends IO
The input results of mouth carry out logical AND operation；
The logical AND operating function modules A ND is directed to the input results of the first I/O port and closes delay operating function
Module TOF carries out logical AND operation；
The PT is more than a PLC cycle period.
Preferably, the fault detect memory function module FDS further includes：
First logic or operation module, after each line state signal in every group of status signal is carried out logic or operation
Obtain a carry-out bit state F_STATE；
Further include inside the PLC：
Second logic or operation module, for patrolling the corresponding each carry-out bit state F_STATE of every group of status signal
It collects or operates；
The host computer reads the second logic or operation module in PLC and exports as a result, according to output control host computer people
Pop up fault message display window in machine interface.
The present invention has the following advantages and effects with respect to the prior art：
(1) a kind of electrical equipment malfunction automatic testing method of the present invention and system are distinguished by each first ports I/O PLC
Connect each fault point of electrical equipment；PLC connects electrical equipment by the second I/O port and detects driving signal output end simultaneously；
Program is stored in PLC internal composition fault detects, can be examined in the case where there is electrical equipment drive signal by program PLC
Each line state signal of each fault point is measured, and is stored.Each line state signal is grouped in PLC, wherein every group
The way of status signal is less than or equal to 16 in status signal, is directed to every group of status signal, turns word function by every group of shape by position
All information bit states in state signal switch to 1 output word state STATE；Final host computer is according to each output word state
Information in STATE, whether each line state signal got in each group status signal is fault-signal, to obtain PLC each
Whether the electrical equipment malfunction point that one I/O port is connected breaks down.It can be seen from the above, PLC believes every group of state in the present invention
Each line state signal in number is packaged into an output word state and directly reads an output when host computer obtains fault message
It can be obtained every group of status signal when word state, therefore the present invention is used as slave computer by PLC and can fast and accurately be detected
To electrical equipment occur failure problems, and can it is automatic by host computer, quick and it is real-time displaying detection obtain therefore
Barrier greatly improves the working efficiency of electrical equipment malfunction detection.
(2) in electrical equipment malfunction automatic testing method of the present invention and system, each line state letter in every group of status signal
Number carry out logic or operation after obtain a carry-out bit state F_STATE, by the corresponding each carry-out bit state of every group of status signal
F_STATE carries out logic or operation；Host computer read PLC in each carry-out bit state F_STATE logics or operation after as a result, root
Host computer man-machine interface, which can be controlled, according to the result pops up fault message display window；It can be seen from the above, in the present invention, for every
Each line state signal in group status signal, by obtaining corresponding carry-out bit state F_STATE after logic or operation, host computer is logical
It crosses each carry-out bit state F_STATE logics or whether operation and control pops up fault message display window, the above-mentioned realization side of the present invention
Formula make host computer as long as have all the way status signal be fault-signal when as long as can pop up fault message display window, can play
Good warning function.
(3) in electrical equipment malfunction automatic testing method of the present invention and system, PLC internal faults detection storage program includes
Close delay operating function；In the present invention, the input results of the second I/O port are by closing after delay operation again by with the
The input results of one I/O port carry out logical AND operation；Specially：When the input results of the second I/O port export useful signal,
Detection comes into force, and the input results of the second I/O port are directly and the input results of the first I/O port carry out logical AND operation；When second
The input results of I/O port, which are exported from useful signal, becomes invalid signals, then closes delay operating function and start internal time ET,
When internal time ET reaches PT values, the input results for generating invalid signals and the first I/O port carry out logical AND operation；Wherein
PT is more than a PLC cycle period.PLC can also after the above-mentioned closing delay operating function of the present invention can ensure electrical equipment stop jumping
There is the time of PT to be in fault detection status, to ensure that fault point detection signal acquisition is complete, further ensures fault detect
As a result accuracy.
(4) include fault detect memory function module in electrical equipment malfunction automatic checkout system of the present invention, inside PLC
FDS stores fault detect by the module and stores program, facilitates the calling fault diagnosis of PLC more convenient and quickers to store program, keep away
Exempt to repeat to write when large number of equipment does fault diagnosis the fault diagnosis storage program inside FDS, reduces workload.
Description of the drawings
Fig. 1 is electrical equipment malfunction automatic checkout system structure diagram of the present invention.
Fig. 2 is that the present invention stores programme diagram in the fault detect of PLC internal compositions.
Fig. 3 a are the schematic diagrames of fault detect memory function module FDS in the present invention.
Fig. 3 b are the annotated maps of fault detect memory function module FDS in invention respectively output and input.
Fig. 4 a are that 16 tunnel fault detects store programme diagram in fault detect memory function module FDS in the present invention.
Fig. 4 b are that position turns word functional module structure schematic diagram in the present invention.
Fig. 4 c are 16 line state signals or logical operation functional schematic in the present invention.
Fig. 5 a are that the fault detect being directed in the present invention when coal mill main motor carries out fault detect in PLC internal compositions is deposited
Store up programme diagram.
Fig. 5 b are the numbers for being directed to host computer when coal mill main motor carries out fault detect in the present invention and corresponding to PLC storage insides
According to block message.
Fig. 6 a and 6b are the failure for being directed to coal mill main motor in the present invention and carrying out host computer pop-up when fault detect respectively
Messagewindow figure.
Specific implementation mode
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Embodiment
Present embodiment discloses a kind of electrical equipment malfunction automatic testing methods, and steps are as follows：
Step S1, each fault point of electrical equipment is separately connected by each first ports I/O PLC；PLC passes through the simultaneously
Two I/O ports connect electrical equipment and detect driving signal output end；Program is stored in PLC internal composition fault detects, PLC is executed
Fault detect stores program, carries out following processing：By the input with the second I/O port respectively of the input results of each first I/O port
As a result logical AND operation is carried out, the result after each logical AND operation is obtained；Result after being operated according to each logical AND is got respectively
Line state signal；Wherein each I/O port correspondence gets status signal all the way；
Step S2, obtain status signal total way N, N line state signals are divided into it is multigroup, wherein every group of status signal
The way of middle status signal is less than or equal to 16；Wherein, in the present embodiment, it is directed to the process that N line state signals are grouped
It is as follows：
First determine whether the total way N for the status signal that step S1 is got is more than 16；
If so, when N can be divided exactly by 16, then status signal is divided into N/16 groups, is otherwise divided into [N/16]+1
Group, wherein [N/16] indicates rounding after N divided by 16；
If it is not, all line state signals are then divided into one group of signal.
Step S3, be directed to every group of status signal, by position turn word function will wherein multichannel status signal it is corresponding multiple
Information bit state switchs to 1 output word state STATE；In the present embodiment, when the way of status signal in this group of status signal
When less than 16, then it will become after everybody subsequent supplement invalid signal level of the corresponding multiple information bit states of multichannel status signal
16.
Step S4, host computer reads each output word state STATE of PLC；Host computer is according in each output word state STATE
Information, whether each line state signal got in each group status signal is fault-signal, to obtain each first ends IO PLC
Whether the electrical equipment malfunction point that mouth is connected breaks down, while host computer is according to the information in each output word state STATE
Control fault message is shown in its human-computer interaction interface window.
In the present embodiment, when fault point generate normal signal be low level, when fault-signal is high level signal, then
Useful signal is high level signal, and invalid signals are low level signal.When the normal signal that fault point generates is high level, failure
When signal is low level signal, then useful signal is low level signal, and invalid signals are high level signal.Host computer is read from PLC
After getting each output word state STATE, corresponding each group status signal is learnt by every information of each output word state STATE
In each line state signal whether be fault-signal, when the level of a certain position for exporting word state STATE is high level 1, then
Status signal corresponding to this of output word state STATE is fault-signal, and host computer can be controlled in human-computer interaction circle at this time
Corresponding fault message is shown in face-port mouth.
The storage program of PLC internal faults detection in the present embodiment includes closing delay operating function, logical AND operating work
Rising edge operation function and storage operating function can, be detected, as shown in Figure 2：
The input results of second I/O port by close delay operation after again by the input results with the first I/O port into
Row logical AND operates；Wherein it is as follows to carry out the detailed process that closing delay operates for the input results of the second I/O port：
When the input results of the second I/O port export useful signal, detection comes into force, and the input results of the second I/O port are straight
It connects and carries out logical AND operation with the input results of the first I/O port；
Become invalid signals when the input results of the second I/O port are exported from useful signal, then closes delay operating function and open
Dynamic internal time ET, when internal time ET reaches PT values, the input results for generating invalid signals and the first I/O port are patrolled
It collects and operates；In the present embodiment, PT is more than a PLC cycle period.
Logical AND operating function is closed for the input results of the first I/O port and the input results of the second I/O port
The result exported after delay operation carries out logical AND operation, obtains logical AND operating result；
Whether detection rising edge operation Function detection current logic occurs the saltus step from 0 to 1 with operating result；If jumping
Become, then generate useful signal, and useful signal is kept to continue in certain time interval T, otherwise generates invalid signals；In this implementation
In example, T is a PLC cycle period.
Operating function is stored when detecting useful signal, then using the useful signal as status signal, and is kept not
Become, the reset signal until detecting PLC inputs, then will export invalid signals as status signal；
In the present embodiment step S4, when status signal is useful signal, then host computer is converted by corresponding to it
Output word state STATE judges the status signal for fault-signal, determines that PLC corresponds to the electrical equipment that the first I/O port is connected
It breaks down fault point.
In the present embodiment, by every group of status signal each line state signal carry out logic or operation after obtain one it is defeated
Go out a state F_STATE, the corresponding each carry-out bit state F_STATE of every group of status signal is subjected to logic or operation；Host computer
Result X after reading each carry-out bit state F_STATE logics in PLC or operating, host computer man-machine interface is controlled according to result X
Fault message display window is popped up, in the present embodiment, when host computer reads each carry-out bit shape in PLC by Ethernet interface
When result X after state F_STATE logics or operation is 1, fault message display window just is popped up in its human-computer interaction interface, therefore
When any line state signal breaks down, host computer can automatic spring fault message display window, it is aobvious with the fault message
Show that window shows fault message.
In the present embodiment, also disclose a kind of electrical equipment malfunction automatic checkout system, as shown in Figure 1, including PLC and
Host computer；
Each first ports I/O of PLC are separately connected each fault point of electrical equipment, are sent for receiving each fault point
Signal；PLC connects electrical equipment by the second I/O port and detects driving signal output end simultaneously, for receiving drive signal；
In the present embodiment, include fault detect memory function module FDS inside PLC：
It is called for PLC for storing fault detect storage program, storing program by storing fault detect realizes each the
The input results of one I/O port carry out logical AND operation with the input results of the second I/O port respectively, after obtaining each logical AND operation
As a result, and according to each logical AND operate after result get each line state signal；Wherein each I/O port, which corresponds to, to be obtained
To status signal all the way；
Total way N for obtaining status signal, and N line state signals are divided into it is multigroup, wherein every group of state letter
The way of status signal is less than or equal to 16 in number；For being directed to every group of status signal, multichannel status signal therein is corresponded to
Multiple information bit states switch to 1 output word state STATE；
In the present embodiment, host computer connects PLC, each output word state for reading PLC by Ethernet interface
STATE；For according to the information in each output word state STATE, each line state signal got in each group status signal is
No is fault-signal, to show whether the electrical equipment malfunction point that each first I/O ports of PLC are connected breaks down.
In the present embodiment, as shown in Figure 2, fault detect memory function module FDS includes：
Delay operating function module TOF is closed, carries out closing delay operation, tool for the input results to the second I/O port
Body is：When the input results of the second I/O port export useful signal, detection comes into force, and closes delay operating function module for straight
Connect output the second I/O port input results, by its second I/O port directly exported input results and the first I/O port it is defeated
Enter result and carries out logical AND operation；Become invalid signals when the input results of the second I/O port are exported from useful signal, then closes
Postpone operating function module and start internal time ET, when internal time ET reaches PT values, generates invalid signals and the first ends IO
The input results of mouth carry out logical AND operation；PT is more than a PLC cycle period.Wherein, as shown in Fig. 2, in the present embodiment,
It includes two inputs to close delay operating function module TOF, is electrical equipment detection i.e. the second I/O ports of drive signal DR respectively
Input results and internal time ET signals.When DR variables are " 1 ", delay operating function module TOF outputs are closed " Q "
For " 1 ", fault detect storage program comes into force；When DR variables become " 0 " from " 1 ", close inside delay operating function module TOF
Time (ET) starts, and internal time reaches the value (time value of PT must be more than a PLC circulation time) of PT, then " Q " changes
For " 0 ", it is invalid that fault detect stores program.
Logical AND operating function modules A ND, for the input results and closing delay operating function for the first I/O port
Module TOF output results carry out logical AND operation, obtain logical AND operating result；Wherein, as shown in Fig. 2, in the present embodiment,
Logical AND operating function modules A ND includes two input signals, is input results and the closing delay of the first I/O port respectively
Operating function module TOF exports result；The IN variables of logical AND operating function modules A ND are the input results of the first I/O port,
That is the signal of fault point, when fault point is broken down, IN variables become " 1 ", and defeated when closing delay operating function module TOF
It is " 1 " to go out result, i.e., the inputs IN1 of logical AND operating function modules A ND are also " 1 " (i.e. fault detect stores program and comes into force)
When, logical AND operating function modules A ND outputs OUT is " 1 ".
Rising edge operation function module R_TRIG is detected, for detecting whether current logic and operating result occur " 0 " and arrive "
1 " saltus step；If the saltus step that " 0 " arrives " 1 " occurs, useful signal is generated, and useful signal is kept to be held in certain time interval T
It is continuous, otherwise generate invalid signals；Wherein, as shown in Fig. 2, in the present embodiment, detecting rising edge operation function module R_TRIG
It is inputted including CLK signal, CLK signal comes from the output OUT of logical AND operating function modules A ND；When detection rising edge operation
When function module R_TRIG detects that the inputs CLK have the saltus step from " 0 " to " 1 ", then exporting will become " 1 ", and keep one
It is " 1 " then to export Q and return to " 0 " in a PLC circulation times.
Store operating function module SR；For when detecting useful signal, then using the useful signal as status signal,
And it remains unchanged, the reset signal until detecting PLC inputs, then will export invalid signals as status signal, wherein logical
Fault message can be removed by crossing reset signal；Wherein, as shown in Fig. 2, in the present embodiment, storage operating function module SR includes
Two input S1 and RESET, respectively detect the output Q and reset signal of rising edge operation function module R_TRIG；When depositing
When storage operating function module SR detects that its S1 inputs become " 1 ", output Q1 will become " 1 ", and corresponding F variables are " 1 "；Even if
Input S1 reverts to " 0 ", this state also remains unchanged.When input R becomes " 1 ", output Q1 is reverted to, and " 0, F variable is " 0 ".
If it is " 1 " to input S1 and R simultaneously, the preferential S1 that inputs can set " 1 " output Q1 to, and F variables are " 1 ".F variables are for depositing
The fault message of detection is stored up, F variables are in faulty state when being " 1 ", F variables are in unfaulty conditions when being " 0 ".
Status signal grouping module, total way N for obtaining status signal, and N line state signals are divided into more
Group, wherein the way of status signal is less than or equal to 16 in every group of status signal；In the present embodiment, status signal grouping module needle
The mode being grouped for N line state signals is as follows：When total way N of status signal is more than 16, then when N can be divided exactly by 16
When, then status signal is divided into N/16 groups, is otherwise divided into [N/16]+1 group, wherein [N/16] indicates rounding after N divided by 16；
When total way N of status signal is less than 16, then all line state signals are divided into one group of signal.
Position turns word function module BOOL_TO_WORD, and for being directed to every group of status signal, multichannel state therein is believed
Number corresponding multiple information bit states switch to 1 output word state STATE；
First logic or operation module, after each line state signal in every group of status signal is carried out logic or operation
Obtain a carry-out bit state F_STATE；
In the present embodiment, further include inside PLC：
Second logic or operation module, for patrolling the corresponding each carry-out bit state F_STATE of every group of status signal
It collects or operates；
Host computer reads the second logic or operation module in PLC by Ethernet interface and exports as a result, according to the result control
Host computer man-machine interface processed pops up fault message display window.
In the present embodiment, the every 16 line state signal F0 to F15 generated in PLC is divided into one group, and converted defeated
Go out word state STATE, while obtaining carry-out bit state F_STATE, it is corresponding by fault detect store function mould as shown in Figure 3a
Block FDS realizes that FDS gets 16 line state signal F0 according to the corresponding 16 road signal IN0 to IN15 in 16 fault points of input
To F15.Wherein the annotation of fault detect memory function module FDS input signals IN0 to IN15 and output signal F0 to F15 is such as
Shown in Fig. 3 b；Wherein as shown in fig. 4 a, the IN0 to IN15 in fault detect memory function module FDS is 16 of PLC respectively
One I/O port correspond to input 16 road signals, that is, correspond to 16 fault points signal, DR be in PLC the second I/O port correspond to it is defeated
The electrical equipment detection drive signal entered is input to each road signals of IN0 to IN15 of PLC respectively by closing delay operating function
Module TOF, logical AND operating function modules A ND, detection rising edge operation function module R_TRIG and storage operating function mould
Corresponding status signal F0 to F15 is obtained after block SR, that is, each road signals of IN0 to IN15 for being input to PLC prolong by closing respectively
Corresponding status signal F0 to F15 is obtained after operation late, logical AND operation, detection rising edge operation and storage operating function.
As shown in Figure 4 b, word function is turned by position totally 16 line state signals switchs to 1 output word state STATE by F0 to F15, while such as
Shown in Fig. 4 c, carry-out bit state F_STATE is obtained after F0 to F15 is carried out logic or operation.Host computer passes through Ethernet interface
It is that can detect that whether 16 road signal IN0 to IN15 of PLC inputs are failure to read one in PLC output word state STATE
Signal.
When the present embodiment above method and system are detected applied to 26 fault points of coal mill main motor 73B04,
The fault detect storage program directly invoked by programming software Unity Pro XL inside PLC is as shown in Figure 5 a, wherein adjusting
Program is stored with 2 fault detects, respectively FDS_1 and FDS_2, wherein FDS_1 input the signal of 16 fault points, FDS_1
The signal of 10 fault points is inputted, the corresponding 26 kinds of fault messages detected are as shown in Figure 5 b respectively for the signal of 26 fault points,
16 line state signals of middle FDS_1 outputs are stored in the address of PLC as % after being converted into output word state M73B04M1_STATE
In MW232,16 line state signals of FDS_2 outputs are converted into being stored in the ground of PLC after output word state M73B04M2_STATE
Location is in %MW233, and host computer reads storage address %MW232 and %MW233 in PLC by Ethernet interface and can obtain
To 26 line state signals, so as to judge whether corresponding 26 fault points of 26 line state signals break down.
M73B04MF_STATE shown in Fig. 5 a and Fig. 5 b is that 73B04 stores variables associated with failure, and it is defeated to correspond to FDS_1
Go out 16 line state signals and FDS_2 output 10 line state signals carry out logic or operation after as a result, the variable in PLC
Storage address be %M500, host computer by read the variable of the storage address determine whether to pop-up fault message display window
Mouthful.
The M73B04_RESET as shown in Fig. 5 a and Fig. 5 b is to remove 73B04 to store fault message signal variable, in PLC
In storage address be %M664.M7304_ST as illustrated in fig. 5 a is the starting-up signal variable of 73B04, when M7304_ST is
Automatically cleared failure stores information when " 1 ".
Configuration software GE iFIX are designed in host computer, increases 73B04 as shown in Figure 5 b in iFIX data management systems and deposits
The data block of fault message is stored up, wherein GE iFIX drive the number of the PLC control stations LCS73 where read-write 73B.04 by MBE
According to.As shown in Figure 6 a the fault message shown in human-computer interaction interface after word state, nothing are respectively exported by reading PLC for host computer
When failure, corresponding malfunction and the aobvious green of word；When in the event of failure, corresponding malfunction and word become red.Such as
Fig. 6 b show when 73B04 produce coal mill base bearing temperature break down when, in the failure that host computer human-computer interaction interface is popped up
Information display window.In the present embodiment Fig. 6 b correspond to window can be with automatic spring.It is former when clicking the removing in Fig. 6 a or Fig. 6 b
When hindering information button, it can make the reset signal of the storage operating function module SR in fault detect memory function module FDS
It becomes zero, the 16 line state signals stored in fault detect memory function module FDS can be removed at this time.
It should be noted that the various embodiments described above provide electrical equipment malfunction automatic checkout system in PLC only with
The division of above-mentioned each function module carries out for example, in practical applications, can as needed and by above-mentioned function distribution by
Different function module is completed, i.e., internal structure is divided into different function modules, with complete it is described above whole or
Partial function.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (10)
1. a kind of electrical equipment malfunction automatic testing method, which is characterized in that steps are as follows：
Step S1, each fault point of electrical equipment is separately connected by each first ports I/O PLC；PLC passes through the 2nd IO simultaneously
Port connects electrical equipment and detects driving signal output end；
Program is stored in PLC internal composition fault detects, PLC executes fault detect and stores program, carries out following processing：By each
The input results of one I/O port carry out logical AND operation with the input results of the second I/O port respectively, after obtaining each logical AND operation
Result；Result after being operated according to each logical AND gets each line state signal；Wherein each I/O port correspondence gets one
Line state signal；
Step S2, obtain status signal total way N, N line state signals are divided into it is multigroup, wherein shape in every group of status signal
The way of state signal is less than or equal to 16；
Step S3, it is directed to every group of status signal, turning word function by position will wherein corresponding multiple information of multichannel status signal
Position state switchs to 1 output word state STATE；
Step S4, host computer reads each output word state STATE of PLC；Host computer is according to the letter in each output word state STATE
Breath, whether each line state signal got in each group status signal is fault-signal, to obtain each first I/O port institutes of PLC
Whether the electrical equipment malfunction point of connection breaks down.
2. electrical equipment malfunction automatic testing method according to claim 1, which is characterized in that PLC internal faults detect
Storage program includes logical AND operating function, detection rising edge operation function and storage operating function；
In the step S1：
It is patrolled first for the input results of the first I/O port and the input results of the second I/O port by logical AND operating function
It collects and operates, obtain logical AND operating result；
Then whether detection rising edge operation Function detection current logic occurs saltus step with operating result；If saltus step occurs, produce
Raw useful signal, and useful signal is kept to continue in certain time interval T, otherwise generate invalid signals；
Finally storage operating function is when detecting useful signal, then using the useful signal as status signal, and keeps not
Become, the reset signal until detecting PLC inputs, then will export invalid signals as status signal；
In the step S4, when status signal is useful signal, then host computer passes through the corresponding output shape that it is converted into
The correspondence position of state STATE judges the status signal for fault-signal, determines that PLC corresponds to the electrical equipment that the first I/O port is connected
It breaks down fault point.
3. electrical equipment malfunction automatic testing method according to claim 2, which is characterized in that the T is that a PLC is followed
The ring period.
4. electrical equipment malfunction automatic testing method according to claim 2, which is characterized in that the PLC internal faults
Detection storage program further includes closing delay operating function；
The input results of the second I/O port are by closing after delay operation again by defeated with the first I/O port in the step S1
Enter result and carries out logical AND operation；Wherein it is as follows to carry out the detailed process that closing delay operates for the input results of the second I/O port：
When the input results of the second I/O port export useful signal, detection comes into force, the input results of the second I/O port directly and
The input results of first I/O port carry out logical AND operation；
Become invalid signals when the input results of the second I/O port are exported from useful signal, then closes in delay operating function startup
Portion time ET, when internal time ET reaches PT values, the input results for generating invalid signals and the first I/O port carry out logical AND
Operation；
The logical AND operating function is carried out for the result exported after the input results of the first I/O port and closing delay operation
Logical AND operates, and obtains logical AND operating result；
The PT is more than a PLC cycle period.
5. electrical equipment malfunction automatic testing method according to claim 2 or 4, which is characterized in that the useful signal
For high level signal, invalid signals are low level signal；Or the useful signal is low level signal, invalid signals are high electricity
Ordinary mail number.
6. electrical equipment malfunction automatic testing method according to claim 1, which is characterized in that it is further comprising the steps of,
A carry-out bit state F_STATE is obtained after each line state signal in every group of status signal is carried out logic or operation, it will be every
Each carry-out bit state F_STATE that group status signal corresponds to carries out logic or operation；
Host computer read PLC in each carry-out bit state F_STATE logics or operation after as a result, according to the output control host computer
Man-machine interface pops up fault message display window.
7. a kind of electrical equipment malfunction automatic checkout system, which is characterized in that including PLC and host computer, each the first of the PLC
The ports I/O are separately connected each fault point of electrical equipment, the signal sent for receiving each fault point；PLC passes through simultaneously
Second I/O port connects electrical equipment and detects driving signal output end, for receiving drive signal；
Include fault detect memory function module FDS inside the PLC, called for PLC for storing fault detect storage program,
By store fault detect store program realize by the input results of each first I/O port respectively with the input knot of the second I/O port
Fruit carries out logical AND operation, obtains after each logical AND operation as a result, and being got according to the result after the operation of each logical AND
Each line state signal；Wherein each I/O port correspondence gets status signal all the way；Total way N for obtaining status signal,
And N line state signals are divided into it is multigroup, wherein in every group of status signal status signal way be less than or equal to 16；For needle
For every group of status signal, the corresponding multiple information bit states of multichannel status signal therein are switched into 1 output word state
STATE；
The host computer connects PLC, each output word state STATE for reading PLC；For according to each output word state
Information in STATE, whether each line state signal got in each group status signal is fault-signal, to obtain PLC each
Whether the electrical equipment malfunction point that one I/O port is connected breaks down.
8. electrical equipment malfunction automatic checkout system according to claim 7, which is characterized in that the fault detect storage
Function module FDS includes：
Logical AND operating function modules A ND, the input results for input results and the second I/O port for the first I/O port
Logical AND operation is carried out, logical AND operating result is obtained；
Rising edge operation function module R_TRIG is detected, for detecting whether current logic occurs saltus step with operating result；If hair
Raw saltus step, then generate useful signal, and useful signal is kept to continue in certain time interval T, otherwise generates invalid signals；
Store operating function module SR；For when detecting useful signal, then using the useful signal as status signal, and
It remains unchanged, the reset signal until detecting PLC inputs then exports invalid signals as status signal；
Status signal grouping module, total way N for obtaining status signal, and N line state signals are divided into multigroup；
Position turns word function module, for being directed to every group of status signal, by the corresponding multiple information of multichannel status signal therein
Position state switchs to 1 output word state STATE.
9. electrical equipment malfunction automatic checkout system according to claim 8, which is characterized in that the fault detect storage
Function module FDS further includes：
Delay operating function module TOF is closed, carries out closing delay operation for the input results to the second I/O port, specifically
For：When the input results of the second I/O port export useful signal, detection comes into force, and closes delay operating function module for direct
The input results for exporting the second I/O port, by the input of the input results and the first I/O port of its second I/O port directly exported
As a result logical AND operation is carried out；Become invalid signals when the input results of the second I/O port are exported from useful signal, then closes and prolong
Slow operating function module starts internal time ET, when internal time ET reaches PT values, generates invalid signals and the first I/O port
Input results carry out logical AND operation；
The logical AND operating function modules A ND is directed to the input results of the first I/O port and closes delay operating function module
TOF carries out logical AND operation；
The PT is more than a PLC cycle period.
10. electrical equipment malfunction automatic checkout system according to claim 7, which is characterized in that the fault detect is deposited
Storing up function module FDS further includes：
First logic or operation module, for being obtained after each line state signal in every group of status signal is carried out logic or operation
One carry-out bit state F_STATE；
Further include inside the PLC：
Second logic or operation module, for by the corresponding each carry-out bit state F_STATE of every group of status signal carry out logic or
Operation；
The host computer reads the second logic or operation module in PLC and exports as a result, according to the man-machine boundary of output control host computer
Pop up fault message display window in face.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109491368A (en) * | 2018-11-30 | 2019-03-19 | 邯郸市邯钢集团信达科技有限公司 | A method of PLC system input signal failure is diagnosed using counter |
| CN110471398A (en) * | 2019-08-26 | 2019-11-19 | 中国自然资源航空物探遥感中心 | A kind of airborne geophysical prospecting airborne system fault detection method and device |
| CN116908751A (en) * | 2023-09-13 | 2023-10-20 | 合肥安迅精密技术有限公司 | Test board for detecting peripheral interfaces of industrial system, detection system and method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09128015A (en) * | 1995-11-02 | 1997-05-16 | Omron Corp | Remote i/o system for plc |
| CN101825876A (en) * | 2009-11-30 | 2010-09-08 | 浙江大学 | Portable fault diagnosis tester applied to petrochemical production device |
| US20110267070A1 (en) * | 2010-04-30 | 2011-11-03 | Schlumberger Technology Corporation | Ground Fault Detection For An Electrical Subsea Control System |
| CN102354162A (en) * | 2011-07-22 | 2012-02-15 | 江俊逢 | Motion control interface and interface controller |
| CN106508008B (en) * | 2007-12-27 | 2012-03-07 | 中国航天科技集团公司燎原无线电厂 | Multi way temperature chip interface implementation method based on FPGA |
| CN102375426A (en) * | 2010-08-09 | 2012-03-14 | 深圳市合信自动化技术有限公司 | Controlling apparatus of digital quantity output of PLC and controlling method thereof |
| CN103885431A (en) * | 2014-04-02 | 2014-06-25 | 北京石油化工学院 | Control system for manufacturing rolled finned tubes |
| CN203758543U (en) * | 2013-12-27 | 2014-08-06 | 天津海洋数码科技有限公司 | Ship machinery fault detection and alarm device |
| CN104227502A (en) * | 2014-08-12 | 2014-12-24 | 东莞市润星机械科技有限公司 | Temperature controller with intelligent three-phase power phase sequence detection and judgment function |
| CN204314679U (en) * | 2014-12-19 | 2015-05-06 | 芜湖国睿兆伏电子有限公司 | A kind of fault routing inspection circuit exported for many power sources in parallel |
| CN104863545A (en) * | 2015-05-21 | 2015-08-26 | 大庆天鸿电热器材有限公司 | Paraffin removal and viscosity reduction device for oil well |
| CN105446313A (en) * | 2015-09-16 | 2016-03-30 | 华锐风电科技(集团)股份有限公司 | Detection method of PLC and IO module |
| CN107632575A (en) * | 2017-10-25 | 2018-01-26 | 中国恩菲工程技术有限公司 | Intelligent operation post |
-
2018
- 2018-07-11 CN CN201810756693.5A patent/CN108594051B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09128015A (en) * | 1995-11-02 | 1997-05-16 | Omron Corp | Remote i/o system for plc |
| CN106508008B (en) * | 2007-12-27 | 2012-03-07 | 中国航天科技集团公司燎原无线电厂 | Multi way temperature chip interface implementation method based on FPGA |
| CN101825876A (en) * | 2009-11-30 | 2010-09-08 | 浙江大学 | Portable fault diagnosis tester applied to petrochemical production device |
| US20110267070A1 (en) * | 2010-04-30 | 2011-11-03 | Schlumberger Technology Corporation | Ground Fault Detection For An Electrical Subsea Control System |
| CN102375426A (en) * | 2010-08-09 | 2012-03-14 | 深圳市合信自动化技术有限公司 | Controlling apparatus of digital quantity output of PLC and controlling method thereof |
| CN102354162A (en) * | 2011-07-22 | 2012-02-15 | 江俊逢 | Motion control interface and interface controller |
| CN203758543U (en) * | 2013-12-27 | 2014-08-06 | 天津海洋数码科技有限公司 | Ship machinery fault detection and alarm device |
| CN103885431A (en) * | 2014-04-02 | 2014-06-25 | 北京石油化工学院 | Control system for manufacturing rolled finned tubes |
| CN104227502A (en) * | 2014-08-12 | 2014-12-24 | 东莞市润星机械科技有限公司 | Temperature controller with intelligent three-phase power phase sequence detection and judgment function |
| CN204314679U (en) * | 2014-12-19 | 2015-05-06 | 芜湖国睿兆伏电子有限公司 | A kind of fault routing inspection circuit exported for many power sources in parallel |
| CN104863545A (en) * | 2015-05-21 | 2015-08-26 | 大庆天鸿电热器材有限公司 | Paraffin removal and viscosity reduction device for oil well |
| CN105446313A (en) * | 2015-09-16 | 2016-03-30 | 华锐风电科技(集团)股份有限公司 | Detection method of PLC and IO module |
| CN107632575A (en) * | 2017-10-25 | 2018-01-26 | 中国恩菲工程技术有限公司 | Intelligent operation post |
Non-Patent Citations (1)
| Title |
|---|
| 游亚陆，孟婥，孙志军，李培兴: "《基于PLC的裤袜自动包装机实时故障检测与处理》", 《包装工程》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109491368A (en) * | 2018-11-30 | 2019-03-19 | 邯郸市邯钢集团信达科技有限公司 | A method of PLC system input signal failure is diagnosed using counter |
| CN109491368B (en) * | 2018-11-30 | 2021-09-24 | 邯郸市邯钢集团信达科技有限公司 | Method for diagnosing PLC system input signal fault by using counter |
| CN110471398A (en) * | 2019-08-26 | 2019-11-19 | 中国自然资源航空物探遥感中心 | A kind of airborne geophysical prospecting airborne system fault detection method and device |
| CN116908751A (en) * | 2023-09-13 | 2023-10-20 | 合肥安迅精密技术有限公司 | Test board for detecting peripheral interfaces of industrial system, detection system and method |
| CN116908751B (en) * | 2023-09-13 | 2024-04-19 | 合肥安迅精密技术有限公司 | Test board for detecting peripheral interfaces of industrial system, detection system and method |
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