CN213517987U

CN213517987U - Digital quantity switch device with high stability

Info

Publication number: CN213517987U
Application number: CN202120048839.8U
Authority: CN
Inventors: 郑威; 郭震; 胡伟智; 滕波; 普绍华; 胡永泉; 李刚; 王宏; 齐兵
Original assignee: Yunnan Three Circles Sinochem Fertilizers Co Ltd
Current assignee: Yunnan Three Circles Sinochem Fertilizers Co Ltd
Priority date: 2021-01-09
Filing date: 2021-01-09
Publication date: 2021-06-22
Anticipated expiration: 2031-01-09

Abstract

The utility model discloses a digital quantity switching device with high stability, including switch, change over switch, circuit breaker, switching power supply, the circuit breaker is connected with switching power supply circuit, switching power supply and change over switch circuit connection still include PLC functional module, PLC functional module and change over switch circuit connection, PLC functional module is the digital quantity switching signal that is used for gathering a plurality of remote signal points and carries out comprehensive judgement through the decision logic that presets, judges when more than half digital quantity switching signal of remote signal point is unified to judge correct output or inefficacy output.

Description

Digital quantity switch device with high stability

Technical Field

The utility model belongs to the technical field of it is electric, the automatic of instrument class, a digital quantity switching device with high stability is related to.

Background

The distributed control system adopts the basic design concept of control dispersion, operation and management centralization and adopts a structural form of multilayer classification, cooperation and autonomy, so that the distributed control system is widely applied to industries such as electric power, metallurgy, petrochemical industry and the like. In the distributed control system, the running state of hardware equipment is reflected by digital quantity switch signals fed back by remote signaling points such as a reed switch, an auxiliary contact and the like, and part of the remote signaling points can participate in equipment interlocking and interlocking running, so whether the digital quantity switch signals fed back by the remote signaling points of the hardware equipment are reliable or not is an important basis for the reliability of the distributed control system, but in actual running, the outdoor remote signaling points are difficult to avoid the phenomena of oxidation, interference, mechanical failure and the like, data distortion is easy to cause, and the actual running state of the hardware equipment cannot be reliably and accurately reflected. Therefore, the development of a digital quantity switch device with high stability is of great significance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a digital quantity switch device with high stability.

Device include switch 1, change over switch 2, circuit breaker 3, switching power supply 6, circuit breaker 3 and switching power supply 6 circuit connection, switching power supply 6 and change over switch 2 circuit connection. The remote signaling point digital quantity switching device is characterized by further comprising a PLC functional module 4, the PLC functional module 4 is in circuit connection with the change-over switch 2, the PLC functional module 4 is used for collecting digital quantity switching signals of a plurality of remote signaling points 7 and comprehensively judging through preset judging logic, and when more than half of the digital quantity switching signals of the remote signaling points 7 are unified, correct output or failure output is judged. The remote control signal monitoring system is characterized by further comprising a human-computer interaction monitoring module 5, the human-computer interaction monitoring module 5 is in circuit connection with the switch power supply 6, the human-computer interaction monitoring module 5 is in telecommunication connection with the PLC functional module 4, the human-computer interaction monitoring module 5 comprises a human-computer interaction display screen 51 and an alarm 52, and the human-computer interaction display screen 51 is used for displaying the current digital quantity switch state of each remote signaling point and the current judgment logic mode of the PLC functional module 4.

The utility model has the advantages as follows:

the utility model discloses can effectively compensate the defect and not enough that prior art exists, monitor the digital quantity switch signal of a plurality of remote signalling points simultaneously, not only can solve because of the data distortion that phenomenon such as single remote signalling point oxidation, interference, mechanical failure caused to can improve accuracy and stability to hardware equipment remote signalling point digital quantity switch signal judgement greatly.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a control circuit diagram of a PLC functional module;

in the figure: the system comprises a 1-switch, a 2-change-over switch, a 3-circuit breaker, a 4-PLC, a 5-human-computer interaction monitoring module, a 51-human-computer interaction display screen, a 52-alarm, a 6-switch power supply, a 7-remote signaling point and an 8-distributed control system.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, which are not intended to limit the present invention in any way, and any modifications or improvements based on the teachings of the present invention are within the scope of the present invention.

As shown in fig. 1-2, the utility model discloses a switch 1, change over switch 2, circuit breaker 3, switching power supply 6, circuit breaker 3 and switching power supply 6 circuit connection, switching power supply 6 and change over switch 2 circuit connection still include PLC functional module 4, PLC functional module 4 and change over switch 2 circuit connection, PLC functional module 4 is the digital quantity switching signal that is used for gathering a plurality of remote signal points 7 and carries out comprehensive judgement through the decision logic that presets, judges when more than half more than the remote signal point 7 digital quantity switching signal looks are unified to judge correct output or failure output.

Furthermore, the interface of the PLC functional module 4 is open, and can be seamlessly connected with a distributed control system, so that the final state of the output switching value and the monitoring of the PLC running state are provided.

The utility model discloses still include human-computer interaction monitoring module 5, human-computer interaction monitoring module 5 and switching power supply 6 circuit connection, human-computer

interaction monitoring module

5 and 4 telecommunications connections of PLC functional module, human-computer interaction monitoring module 5 includes human-computer interaction display screen 51 and siren 52, human-computer interaction display screen 51 is used for showing current each remote credit digital quantity switch state and the current logical mode of judgement of PLC functional module 4, siren 52 is used for sending out the police dispatch newspaper when hardware equipment is in failure output.

The input end of the PLC functional module 4 is in telecommunication connection with remote signaling points 7 on hardware equipment, the output end of the PLC functional module 4 is in telecommunication connection with a distributed control system 8, the logic judgment mode of the PLC functional module 4 comprises two-out-of-three, the input end of the PLC functional module 4 is in telecommunication connection with three remote signaling points 7, and the control logic is that the digital switching values fed back by the three remote signaling points are all 1 or the digital switching values fed back by any two remote signaling points are 1, so that the accurate output is judged; and if the digital switching values fed back by the three remote signaling points are all 0 or the digital switching values fed back by any two remote signaling points are 0, determining that the digital switching values are invalid and outputting.

Further, the correct output probability of the two-out-of-three logic determination mode of the PLC function module 4 is 97.20%.

The logic judgment mode of the PLC function module 4 further comprises a fifth selection of three, the input end of the PLC function module 4 is in telecommunication connection with five remote signaling points 7, the control logic is that the digital switching values fed back by the five remote signaling points are all 1 or the digital switching values fed back by any three remote signaling points are 1, the correct output is judged, and the digital switching values fed back by the five remote signaling points are all 0 or the digital switching values fed back by any three remote signaling points are 0, the failure output is judged.

Further, the PLC function module 4 has a correct output probability of 99.144% in the three-out-of-five logic determination mode.

Further, the transfer switch is used for selecting a logic determination mode of the PLC function module 4, and may select a two-out-of-three mode or a three-out-of-five mode.

Claims

1. The utility model provides a digital quantity switchgear with high stability, includes switch (1), change over switch (2), circuit breaker (3), switching power supply (6), circuit breaker (3) and switching power supply (6) circuit connection, switching power supply (6) and change over switch (2) circuit connection, characterized by: the remote signaling point switching device is characterized by further comprising a PLC functional module (4), the PLC functional module (4) is in circuit connection with the change-over switch (2), the PLC functional module (4) is used for collecting digital quantity switching signals of a plurality of remote signaling points (7) and comprehensively judging through preset judging logic, and when more than half of the digital quantity switching signals of the remote signaling points (7) are unified, correct output or failure output is judged.

2. A digital quantity switching device with high stability according to claim 1, wherein: the remote communication point digital quantity switch system is characterized by further comprising a human-computer interaction monitoring module (5), the human-computer interaction monitoring module (5) is in circuit connection with the switch power supply (6), the human-computer interaction monitoring module (5) is in telecommunication connection with the PLC functional module (4), the human-computer interaction monitoring module (5) comprises a human-computer interaction display screen (51) and an alarm (52), and the human-computer interaction display screen (51) is used for displaying the current digital quantity switch states of all remote communication points and the current judgment logic mode of the PLC functional module (4).

3. A digital quantity switching device having high stability according to claim 1 or claim 2, wherein: the input end of the PLC functional module (4) is in telecommunication connection with remote signaling points (7) on hardware equipment, the output end of the PLC functional module is in telecommunication connection with a distributed control system (8), the logic judgment mode of the PLC functional module (4) comprises two-out-of-three, the input end of the PLC functional module (4) is in telecommunication connection with three remote signaling points (7), and the control logic is that the digital switching values fed back by the three remote signaling points are all 1 or the digital switching values fed back by any two remote signaling points are 1, so that the correct output is judged; and if the digital switching values fed back by the three remote signaling points are all 0 or the digital switching values fed back by any two remote signaling points are 0, determining that the digital switching values are invalid and outputting.

4. A digital quantity switching device with high stability according to claim 3, wherein: the logic judgment mode of the PLC function module (4) further comprises three-out-of-five, the input end of the PLC function module (4) is in telecommunication connection with five remote signaling points (7), the control logic is that the digital switching values fed back by the five remote signaling points are all 1 or the digital switching values fed back by any three remote signaling points are 1, the correct output is judged, and the digital switching values fed back by the five remote signaling points are all 0 or the digital switching values fed back by any three remote signaling points are 0, the failure output is judged.