CN109991883A - A kind of equipment safety pin intelligent monitor system and method - Google Patents
A kind of equipment safety pin intelligent monitor system and method Download PDFInfo
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- CN109991883A CN109991883A CN201910256450.XA CN201910256450A CN109991883A CN 109991883 A CN109991883 A CN 109991883A CN 201910256450 A CN201910256450 A CN 201910256450A CN 109991883 A CN109991883 A CN 109991883A
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- targeted security
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- proximity switch
- inductive proximity
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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
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Abstract
The invention discloses a kind of equipment safety pin intelligent monitor system and methods, are related to plant maintenance technical field, including controller, close switch and control device；Wherein, described to include normally opened inductive proximity switch and normally closed inductive proximity switch close to switch, for acquiring the detection signal of targeted security pin working condition in real time；The controller is electrically connected with the normally opened inductive proximity switch and normally closed inductive proximity switch, for being judged according to the detection signal and obtaining the targeted security pin work state information；The control device is electrically connected with the controller, for showing the targeted security pin working condition according to the targeted security pin work state information；It solves the technical issues of safety pin plug situation checks low efficiency in the prior art, while improving inspection efficiency, also improves safety when overhaul of the equipments.
Description
Technical field
The present invention relates to plant maintenance technical fields, and in particular to a kind of equipment safety pin intelligent monitor system and method.
Background technique
It is being related to the industrial and mining enterprises of large scale industry automatic sets, safety management is the first management of Business survival, operation
Field management unit of the area as most base, safety management are the bases of entire enterprise.Operation area how safety first this
Item work reaches standardization and fining, and accomplishing " four do not injure " conscientiously, (i.e. I does not injure oneself, I does not injure others, I am not
It is injured by others, other people is protected to preserve from).
It to prevent built-in unit from malfunctioning when unit maintenance, also need to plug safety pin after closing power source, prevent from setting
Malfunction is influenced by gravity or other factors, injury is generated to personnel.Existing safety pin quantity is more, to be such as confirmed whether
Plug in place, needs to check confirmation one by one, time-consuming and laborious, heavy workload and inefficient, and there are extremely individually before maintenance
The problem of safety pin is not plugged and the problem of do not extract there are pole individual secure pin before manufacture.
Summary of the invention
The embodiment of the present application solves in the related technology by providing a kind of equipment safety pin intelligent monitor system and method
Safety pin plug situation checks the problem of low efficiency.
The application is provided the following technical solutions by the embodiment of the application:
A kind of equipment safety pin intelligent monitor system, including controller, close to switch block and control device；Wherein, described
It include normally opened inductive proximity switch and normally closed inductive proximity switch close to switch block, for acquiring targeted security pin in real time
The detection signal of working condition；The controller is electrically connected with the normally opened inductive proximity switch and normally closed inductive proximity switch
It connects, for being judged according to the detection signal and obtaining the targeted security pin work state information；The control device with it is described
Controller electrical connection, for showing the targeted security pin working condition according to the targeted security pin work state information.
Optionally, the control device includes:
Alarm lamp, for the instruction displaying target safety pin abnormal operation according to the controller；
Work light, for the instruction displaying target safety pin normal operating conditions according to the controller.
Optionally, the control device further include:
Buzzer is used to carry out buzzing prompt when the targeted security pin abnormal operation；
Function button, for resetting the buzzer.
Optionally, the system also includes:
HMI man-machine interface, for showing the targeted security pin work state information according to the instruction of the controller.
On the other hand, the application passes through the embodiment of the application, provides the following technical solutions:
A kind of equipment safety pin intelligent control method, comprising the following steps:
It is adopted in real time using the normally opened inductive proximity switch close in switch block and normally closed inductive proximity switch
Collect the detection signal of targeted security pin working condition；
Judged using controller according to the detection signal and obtains the targeted security pin work state information；
Using control device according to the targeted security pin work state information, the targeted security pin working condition is shown；
Wherein, described that the targeted security pin work state information is obtained according to detection signal judgement using controller
Method specifically include:
It is opposite with the detection signal that the normally closed inductive proximity switch detects in the normally opened inductive proximity switch
When, using the controller according to the normally opened inductive proximity switch and the respective detection of normally closed inductive proximity switch
Signal is compared with preset state signal, judges and obtains the targeted security pin work state information.
Optionally, the targeted security pin work is shown according to the targeted security pin work state information using control device
Make state, specifically include:
The targeted security pin abnormal operation is indicated using alarm lamp；
The targeted security pin normal operating conditions is indicated using work light.
Optionally, described to utilize control device according to the targeted security pin work state information, show the targeted security
Working condition is sold, specifically further include: buzzing prompt is carried out in the targeted security pin abnormal operation, and in the target
Safety pin resets the buzzer after restoring normal operating conditions.
Optionally, described to be judged according to the detection signal using controller and obtain the targeted security pin working condition
After information, the method is specific further include:
The targeted security pin work state information is shown in HMI man-machine interface.
Optionally, the case where targeted security pin abnormal operation, includes:
When target device is in operating status, the targeted security pin is in operating position；
When target device is in maintenance down state, the targeted security pin is not in operating position；
The case where targeted security pin normal operating conditions includes:
When target device is in operating status, the targeted security pin is not in operating position；
When target device is in maintenance down state, the targeted security pin is in operating position.
Optionally, normally opened inductive proximity switch and normally closed inductive proximity switch are being acquired in real time simultaneously to targeted security
After the detection signal for selling working condition, the method also includes:
The signal of the normally opened inductive proximity switch and normally closed inductive proximity switch is judged according to the detection signal
Detect whether exception.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The present invention acquires targeted security using normally opened inductive proximity switch and normally closed inductive proximity switch simultaneously in real time
The detection signal of working condition is sold, and is electrically connected using controller and normally opened inductive proximity switch and normally closed inductive proximity switch
It connects, judges and obtain targeted security pin work state information according to detection signal, be finally electrically connected with the controller using control device,
According to targeted security pin work state information, displaying target safety pin working condition；User can be according to the mesh shown on control device
Mark safety pin working condition intuitively judges whether safety pin working condition is normal, without installing manual confirmation to each safety pin
Whether safety pin plugs in place, and acquires mesh in real time using normally opened inductive proximity switch and normally closed inductive proximity switch simultaneously
The detection signal for marking safety pin working condition, since normally opened inductive proximity switch and normally closed inductive proximity switch pacify target
The detection signal that the same working condition sold entirely is showed be it is opposite, when any one occur it is abnormal or two simultaneously out
It is now abnormal, can carry out whether comprehensive descision detection signal is abnormal according to detection signal, avoid the exception because of detection signal
Cause the signal of mistake to feed back, and mislead operator, so that the efficiency of detection be made to greatly improve.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is the equipment of the embodiment of the present invention safety pin intelligent monitor system figure；
In figure, 1. function buttons, 2. alarm lamps, 3. work lights, 4. buzzers, 5. normally closed induction types are close to be opened
It closes, 6. normally opened inductive proximity switches, 7. installation pedestals, 8. targeted security pins；
Fig. 2 is the equipment of the embodiment of the present invention safety pin intelligent control method flow chart.
Specific embodiment
The embodiment of the present application solves in the prior art by providing a kind of equipment safety pin intelligent monitor system and method
Safety pin plug situation checks the technical issues of low efficiency, improves while check efficiency, when also improving overhaul of the equipments
Safety.
The technical solution of the embodiment of the present application is in order to solve the above technical problems, general thought is as follows:
A kind of equipment safety pin intelligent monitor system, including controller, close to switch block and control device；Wherein, described
It include normally opened inductive proximity switch and normally closed inductive proximity switch close to switch block, for acquiring targeted security pin in real time
The detection signal of working condition；The controller is electrically connected with the normally opened inductive proximity switch and normally closed inductive proximity switch
It connects, for being judged according to the detection signal and obtaining the targeted security pin work state information；The control device with it is described
Controller electrical connection, for showing the targeted security pin working condition according to the targeted security pin work state information.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
Illustrate first, herein presented term "and/or", only a kind of incidence relation for describing affiliated partner, table
Show there may be three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, individualism B this three
Kind situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Embodiment 1
The present embodiment provides a kind of equipment safety pin intelligent monitor system, Fig. 1 be the present embodiment system connection relationship and
Scheme of installation.It specifically includes:
A kind of equipment safety pin intelligent monitor system, including controller, close to switch block and control device；Wherein, described
It include normally opened inductive proximity switch 6 and normally closed inductive proximity switch 5 close to switch block, for acquiring targeted security in real time
The detection signal of 8 working condition of pin；The controller and the normally opened inductive proximity switch 6 and normally closed inductive proximity switch
5 electrical connections, for being judged according to the detection signal and obtaining 8 work state information of targeted security pin；The control device
It is electrically connected with the controller, for showing 8 work of targeted security pin according to 8 work state information of targeted security pin
Make state.
In the present embodiment, as shown in figure 1, a normally opened inductive proximity switch 6 and a normally closed induction type can be used
Close to switch 5, a pair of switches is formed, is symmetrically installed on the two sides installation pedestal 7 of the plug of targeted security pin 8 position, while into
Row signal detection, naturally it is also possible to multipair above-mentioned switch be set and carry out signal detection, here and with no restrictions；Controller is to normally opened
After the signal that inductive proximity switch 6 and normally closed inductive proximity switch 5 acquire is identified, corresponding finger is sent to control device
It is fixed, show that 8 working condition of targeted security pin, the display mode of working condition can be different colours there are many multiplicity
Lamp can be screen Digital and show, belong to the scope of protection of the present invention as long as it can intuitively be presented to operator, here simultaneously
With no restrictions.Controller can be PLC, can plant program, controls system.
Further, the shape detected in the normally opened inductive proximity switch 6 with the normally closed inductive proximity switch 5
When state signal is opposite, controller can be respective according to the normally opened inductive proximity switch 6 and the normally closed inductive proximity switch 5
Status signal be compared with preset state signal, judge and obtain 8 work state information of targeted security pin.
As a kind of optional scheme, as shown in Figure 1, the control device includes:
Alarm lamp 2, for 8 abnormal operation of instruction displaying target safety pin according to the controller；
Work light 3, for 8 normal operating conditions of instruction displaying target safety pin according to the controller.
Specifically, in order to meet general prompt warning habit, alarm lamp 2 can be red lamp, can also set
It is set to the red light of flashing, naturally it is also possible to be other colors or form, as long as having suggesting effect all is protection of the invention
Range.
Work light 3 illustrates the normal operating conditions of targeted security pin 8, therefore, can use the indicator light of green, certainly
Other colors can also be used.
As a kind of optional scheme, the control device further include:
Buzzer 4 is used to carry out buzzing prompt when 8 abnormal operation of targeted security pin；
Function button 1, for resetting the buzzer 4.
Specifically, having better suggesting effect in order on the warning indicators for playing the role of alarm lamp 2, bee is set
Ring device 4 is connect with controller, and on the basis of alarm lamp 2 carries out visual alarm prompt, buzzer 4 carries out acoustic control report simultaneously
Alert prompt.It is understood that as needed, buzzer 4 can carry out lasting voice-control alarm, it can also be with discontinuous, only
Play the role of auditory cues.
After 8 abnormal operation of targeted security pin restores normal, function button connected to the controller can be passed through
1, it is resetted, naturally it is also possible to be set as automatically reseting.
As a kind of optional scheme, the system also includes:
HMI man-machine interface, for showing 8 work state information of targeted security pin according to the instruction of the controller.
Specifically, being arranged connected to the controller to more intuitively be presented on 8 work state information of targeted security pin
HMI man-machine interface, HMI man-machine interface can be set needs and carry out from anywhere in intuitively showing, such as Central Control Room, operation scene
Etc..
Technical solution in above-mentioned the embodiment of the present application, at least have the following technical effects or advantages:
The present invention simultaneously using normally opened inductive proximity switch 6 and normally closed inductive proximity switch 5, pacify in real time by acquisition target
The detection signal of 8 working condition of full pin, and utilize controller and normally opened inductive proximity switch 6 and normally closed inductive proximity switch
5 electrical connections judge according to detection signal and obtain 8 work state information of targeted security pin, finally utilize control device and controller
Electrical connection, according to 8 work state information of targeted security pin, 8 working condition of displaying target safety pin；User can be according on control device
8 working condition of targeted security pin of display intuitively judges whether safety pin working condition is normal, without pacifying to each safety pin
Whether dress manual confirmation safety pin plugs in place, and opens simultaneously using normally opened inductive proximity switch 6 and normally closed induction type are close
The 5 detection signals for acquiring 8 working condition of targeted security pin in real time are closed, due to normally opened inductive proximity switch 6 and normally closed induction type
The detection signal that is showed of same working condition close to 5 pairs of targeted security pins 8 of switch be it is opposite, when any one occurs
Whether abnormal or two exception occur simultaneously, it is abnormal to carry out comprehensive descision detection signal according to detection signal, avoids
Because the exception of detection signal causes the signal of mistake to feed back, and misleads operator, so that the efficiency of detection be made to greatly improve.
Based on the same inventive concept, another embodiment of the application provides one kind described in a kind of implementation the embodiment of the present application and sets
Standby safety pin intelligent control method.
Embodiment two
The present embodiment provides a kind of equipment safety pin intelligent control method, Fig. 2 is the method flow diagram of the present embodiment.Specifically
The following steps are included:
S101, the normally opened inductive proximity switch 6 and normally closed inductive proximity switch 5 close in switch block is utilized
The detection signal of acquisition 8 working condition of targeted security pin in real time；
S102, judged using controller according to the detection signal and obtain 8 work state information of targeted security pin；
S103, using control device according to 8 work state information of targeted security pin, show 8 work of targeted security pin
Make state；
Wherein, the method for obtaining 8 work state information of targeted security pin according to the detection signal judgement has
Body includes:
In the detection signal phase that the normally opened inductive proximity switch 6 is detected with the normally closed inductive proximity switch 5
It is inverse time, respective according to the normally opened inductive proximity switch 6 and the normally closed inductive proximity switch 5 using the controller
Detection signal is compared with preset state signal, judges and obtains 8 work state information of targeted security pin.
Specifically, since normally opened inductive proximity switch 6 and normally closed inductive proximity switch 5 believe the detection of same state
Number on the contrary, can logic presupposition to controller it is as shown in table 1 below.
Table 1
As shown in table 1, for example, when safety pin is in operating position, the signal that normally opened inductive proximity switch 6 is fed back is
1, the signal that normally closed inductive proximity switch 5 is fed back is 0；When safety pin is not or not operating position, normally opened inductive proximity switch 6
The signal of feedback is 0, and the signal that normally closed inductive proximity switch 5 is fed back is 1.
It is described to utilize control device according to 8 work state information of targeted security pin, display as a kind of optional scheme
The method of 8 working condition of targeted security pin specifically includes:
8 abnormal operation of targeted security pin is indicated using alarm lamp 2；
8 normal operating conditions of targeted security pin is indicated using work light 3.
Specifically, in order to meet general prompt warning habit, alarm lamp 2 can be red lamp, can also set
It is set to the red light of flashing, naturally it is also possible to be other colors or form, as long as having suggesting effect all is protection of the invention
Range.
Work light 3 illustrates the normal operating conditions of targeted security pin 8, therefore, can use the indicator light of green, certainly
Other colors can also be used.
It is described to utilize control device according to 8 work state information of targeted security pin, display as a kind of optional scheme
The method of 8 working condition of targeted security pin also specifically includes: carrying out bee in 8 abnormal operation of targeted security pin
Ring prompt, and the buzzer 4 is resetted after the targeted security pin 8 restores normal operating conditions.
Specifically, having better suggesting effect in order on the warning indicators for playing the role of alarm lamp 2, bee is set
Ring device 4 is connect with controller, and on the basis of alarm lamp 2 carries out visual alarm prompt, buzzer 4 carries out acoustic control report simultaneously
Alert prompt.It is understood that as needed, buzzer 4 can carry out lasting voice-control alarm, it can also be with discontinuous, only
Play the role of auditory cues.
After 8 abnormal operation of targeted security pin restores normal, function button connected to the controller can be passed through
1, it is resetted, naturally it is also possible to be set as automatically reseting.
As a kind of optional scheme, is judged using controller according to the detection signal and obtain the targeted security pin
After work state information, this method is specific further include:
8 work state information of targeted security pin is shown in HMI man-machine interface.
Specifically, being arranged connected to the controller to more intuitively be presented on 8 work state information of targeted security pin
HMI man-machine interface, HMI man-machine interface can be set needs and carry out from anywhere in intuitively showing, such as Central Control Room, operation scene
Etc..
As a kind of optional scheme, the case where 8 abnormal operation of targeted security pin, includes:
When target device is in operating status, the targeted security pin 8 is in operating position；
When target device is in maintenance down state, the targeted security pin 8 is not in operating position；
The case where 8 normal operating conditions of targeted security pin includes:
When target device is in operating status, the targeted security pin 8 is not in operating position；
When target device is in maintenance down state, the targeted security pin 8 is in operating position.
Specifically, system is online with target device in the present embodiment, operation and the shutdown status of target device can pass through
Controller carries out identification judgement, and carries out whether 8 working condition of targeted security pin carries out extremely according to the state of targeted security pin 8
Judgement.
As a kind of optional scheme, normally opened inductive proximity switch is being acquired in real time and normally closed inductive proximity switch is same
When to the detection signal of targeted security pin working condition after, the method also includes:
Judge that the normally opened inductive proximity switch 6 and normally closed induction type are close according to the detection signal using controller
Whether the signal detection of switch 5 is abnormal.
Specifically, when the shape that the normally opened inductive proximity switch 6 is detected with the normally closed inductive proximity switch 5
When state signal is identical, the signal detection of the normally opened inductive proximity switch 6 and/or the normally closed inductive proximity switch 5 is different
Often.
Specifically, as shown in table 1, under normal circumstances, normally opened inductive proximity switch 6 and normally closed inductive proximity switch 5
To the detection signal of same state on the contrary, for distance, when safety pin is in operating position, normally opened inductive proximity switch 6 is fed back
Signal be 1, the signal that normally closed inductive proximity switch 5 is fed back is 0；When safety pin is not or not operating position, normally opened induction type
The signal fed back close to switch 6 is 0, and the signal that normally closed inductive proximity switch 5 is fed back is 1.
And when normally opened inductive proximity switch 6 and 5 signal of normally closed inductive proximity switch are all 1 or are all 0, it indicates
There is a switch exception, another switch is normal, and at this moment, what it is by target device is to shut down or run, then which can determine whether
A switch is abnormal, which switch is normal.For example, when normally opened inductive proximity switch 6 and normally closed inductive proximity switch 5
Signal is all 1, and target device is in shutdown status, and at this moment safety pin is in operating position, and under normal circumstances, normally opened induction type connects
The signal that nearly switch 6 is fed back is 1, and the signal that normally closed inductive proximity switch 5 is fed back is 0, it was demonstrated that normally closed inductive proximity switch 5
It is abnormal；Conversely, then proving that normally opened inductive proximity switch 6 is abnormal.
It should be noted that in practical situations, general normally opened inductive proximity switch 6 and normally closed inductive proximity switch
5 can all show that signal is 0 when occurring abnormal, that is to say, that regardless of normally opened inductive proximity switch 6 or normally closed induction type are close
Switch 5 is all fed back to no signal when occurring abnormal, i.e. signal is 0, such as connecting line is disconnected etc..
Therefore, compared with prior art, the technical solution in above-mentioned the embodiment of the present application is at least imitated with following technology
Fruit or advantage:
8 work of targeted security pin is acquired in real time using normally opened inductive proximity switch 6 and normally closed inductive proximity switch 5 simultaneously
The detection signal for making state, due to normally opened inductive proximity switch 6 with normally closed inductive proximity switch 5 to targeted security pin 8
The detection signal that same working condition is showed be it is opposite, when any one occur it is abnormal or two occur simultaneously it is different
Often, it is whether abnormal that comprehensive descision detection signal can be carried out according to detection signal, to checked in time close to the different of switch
Often, on-call maintenance, multiple contacts can reduce monitors failure risk close to switch, guarantee the duration of monitoring, further increase
Safety pin plug situation checks efficiency.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of equipment safety pin intelligent monitor system, which is characterized in that including controller, close to switch block and control device；
Wherein,
It is described close to switch block include normally opened inductive proximity switch and normally closed inductive proximity switch, for acquiring mesh in real time
Mark the detection signal of safety pin working condition；
The controller is electrically connected with the normally opened inductive proximity switch and normally closed inductive proximity switch, for according to
Detection signal judges and obtains the targeted security pin work state information；
The control device is electrically connected with the controller, for according to the targeted security pin work state information, described in display
Targeted security pin working condition.
2. system according to claim 1, which is characterized in that the control device includes:
Alarm lamp, for the instruction displaying target safety pin abnormal operation according to the controller；
Work light, for the instruction displaying target safety pin normal operating conditions according to the controller.
3. system according to claim 2, which is characterized in that the control device further include:
Buzzer is used to carry out buzzing prompt when the targeted security pin abnormal operation；
Function button, for resetting the buzzer.
4. system according to claim 1, which is characterized in that the system also includes:
HMI man-machine interface, for showing the targeted security pin work state information according to the instruction of the controller.
5. a kind of equipment safety pin intelligent control method, which comprises the following steps:
Mesh is acquired in real time using the normally opened inductive proximity switch close in switch block and normally closed inductive proximity switch
Mark the detection signal of safety pin working condition；
Judged using controller according to the detection signal and obtains the targeted security pin work state information；
Using control device according to the targeted security pin work state information, the targeted security pin working condition is shown；
Wherein, the side for obtaining the targeted security pin work state information according to the detection signal judgement using controller
Method specifically includes:
When the normally opened inductive proximity switch is opposite with the detection signal that the normally closed inductive proximity switch detects, benefit
With the controller according to the normally opened inductive proximity switch and the respective detection signal of the normally closed inductive proximity switch
It is compared with preset state signal, judges and obtains the targeted security pin work state information.
6. according to the method described in claim 5, it is characterized in that, described worked using control device according to the targeted security pin
Status information shows the targeted security pin working condition, specifically includes:
The targeted security pin abnormal operation is indicated using alarm lamp；
The targeted security pin normal operating conditions is indicated using work light.
7. according to the method described in claim 6, it is characterized in that, described worked using control device according to the targeted security pin
Status information shows that the targeted security pin working condition, the method are specific further include: in the targeted security pin exception work
Make to carry out buzzing prompt when state, and resets the buzzer after the targeted security pin restores normal operating conditions.
8. according to the method described in claim 5, it is characterized in that, described judged simultaneously using controller according to the detection signal
After obtaining the targeted security pin work state information, the method is specific further include:
The targeted security pin work state information is shown in HMI man-machine interface.
9. according to described in any item methods of claim 6-8, which is characterized in that the targeted security pin abnormal operation
The case where include:
When target device is in operating status, the targeted security pin is in operating position；
When target device is in maintenance down state, the targeted security pin is not in operating position；
The case where targeted security pin normal operating conditions includes:
When target device is in operating status, the targeted security pin is not in operating position；
When target device is in maintenance down state, the targeted security pin is in operating position.
10. according to the method described in claim 5, it is characterized in that, acquiring normally opened inductive proximity switch and normally closed in real time
Inductive proximity switch simultaneously to the detection signal of targeted security pin working condition after, the method also includes:
The normally opened inductive proximity switch and normally closed inductive proximity switch are judged according to the detection signal using controller
Signal detection it is whether abnormal.
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| CN201910256450.XA CN109991883A (en) | 2019-03-29 | 2019-03-29 | A kind of equipment safety pin intelligent monitor system and method |
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| CN111413903A (en) * | 2020-04-01 | 2020-07-14 | 镇江颀珑工程技术服务有限公司 | Nonlinear time-delay remote monitoring system for industrial production |
| CN112456337A (en) * | 2020-12-02 | 2021-03-09 | 太原重工股份有限公司 | Telescopic boom plug pin mechanism control device and crane |
| CN112817246A (en) * | 2019-11-15 | 2021-05-18 | Wago管理有限责任公司 | Module with display device for displaying physical state of sensor connected to module |
| CN114887270A (en) * | 2022-05-22 | 2022-08-12 | 安徽世纪凯旋消防科技有限公司 | Warning device and monitoring method for gas fire extinguishing system not entering working state |
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| CN112456337A (en) * | 2020-12-02 | 2021-03-09 | 太原重工股份有限公司 | Telescopic boom plug pin mechanism control device and crane |
| CN114887270A (en) * | 2022-05-22 | 2022-08-12 | 安徽世纪凯旋消防科技有限公司 | Warning device and monitoring method for gas fire extinguishing system not entering working state |
| CN114887270B (en) * | 2022-05-22 | 2023-11-21 | 安徽世纪凯旋消防科技有限公司 | Warning device and monitoring method for non-entering working state of gas fire extinguishing system |
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Application publication date: 20190709 |