CN204479657U - Subway shield door insulated monitoring system - Google Patents
Subway shield door insulated monitoring system Download PDFInfo
- Publication number
- CN204479657U CN204479657U CN201520095009.5U CN201520095009U CN204479657U CN 204479657 U CN204479657 U CN 204479657U CN 201520095009 U CN201520095009 U CN 201520095009U CN 204479657 U CN204479657 U CN 204479657U
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- Prior art keywords
- shield door
- warning
- monitoring system
- rail
- subway
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- Expired - Fee Related
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
- 238000009413 insulation Methods 0.000 claims abstract description 19
- 238000012360 testing method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a kind of subway shield door insulated monitoring system, this system comprises: a pick-up unit, and this pick-up unit one end is connected on subway shield door, other end ground connection, for detecting shield door relative to the resistance value between ground; One control processor (PLC), detecting instruction and control switch on and off equipotential line between shield door and rail for sending, comparing with early warning and alarm threshold value for receiving shield door that described pick-up unit detects relative to the resistance value between ground; One on-off controller, break-make connector is connected on the equipotential line between shield door and rail, controls the equipotential line switched on and off between shield door and rail; One warning device, receives instruction early warning or the warning of control processor (PLC).The utility model can in real time, directly detect shield door and utterly between insulation resistance value, give warning in advance, effectively avoid the potential safety hazard that failure of insulation brings, there is good safety and reliability.
Description
Technical field
The utility model relates to a kind of insulated monitoring system, a kind of subway shield door insulation of specific design real-time monitoring system.
Background technology
In subway, urban light rail etc. are built, need to make subway shield door and the process of track equipotential, thus avoid passenger to contact shield door when getting off having electrical sensation.Because subway and track exist potential difference (PD) to ground, therefore require that subway shield door should be accomplished to insulate with ground, in construction criteria and bidding document, have this requirement, the numerical value of specific requirement be shield door entirety over the ground resistance be not less than 0.5 megaohm.
After shield door and rail connect, the insulation on shield door and ground is extremely important, the other problem that the failure of insulation caused in order to avoid unexpected factor causes, and needs to make monitoring to the insulation status of shield door.
CN202049213U discloses a kind of shield door Intelligent insulating monitoring device, and it comprises two current sensors, change-over circuit and control processors, and wherein two current sensors are connected with change-over circuit, and change-over circuit is connected with control processor.This pick-up unit is oppositely located on subway shield door and track equipotential line by two current sensors, and when current sensor detects electric current, namely the insulation of subway shield door was lost efficacy, and reported to the police immediately.But, the shortcoming of this insulation monitor is: when electric current being detected, insulation was lost efficacy, voltage difference on track is applied with great electric current by the cable that integrates with to whole shield door, cause a body separation structure to occur sparking, the even more serious train that affects normally runs, brings great risk to passenger's personal safety.
Summary of the invention
The purpose of this utility model is that solving existing insulation monitor can not shift to an earlier date anticipation failure of insulation thus the technical matters causing security low.
The technical solution of the utility model is: a kind of subway shield door insulated monitoring system, and it is characterized in that, it comprises:
One pick-up unit, this pick-up unit one end is connected on subway shield door, other end ground connection, for detecting shield door relative to the resistance value between utterly;
One control processor (PLC), detect instruction and control switch on and off equipotential line between shield door and rail for sending, comparing with threshold value for receiving shield door that described pick-up unit detects relative to the resistance value between utterly, when reaching threshold value of warning R1, sending early warning signal; Send alerting signal when reaching failure threshold R2, send control signal to on-off controller, disconnect the equipotential line between shield door and rail;
One on-off controller, on-off controller is connected on the equipotential line between shield door and rail, and the instruction for receiving control processor (PLC) switches on and off the equipotential line between shield door and rail;
One warning device, receives instruction early warning or the warning of control processor (PLC).
As optimal way, subway shield door insulated monitoring system described in the utility model further comprises a display terminal, for showing testing result.
As optimal way, subway shield door insulated monitoring system described in the utility model, wherein said pick-up unit comprises at least 10 resistor detecting devices, an A/D modular converter and an output module; One end of described several resistor detecting device is connected to shield door respectively by L4 uniform intervals, this several resistor detecting device other end by L7 be connected utterly, for measuring shield door resistance over the ground; Modular converter converts digital signal to the resistance value detected; Output module utilizes 485 bus modes to send PLC control processor to digital signal.
As optimal way, subway shield door insulated monitoring system described in the utility model, wherein said threshold value of warning R1, is down to this value when resistance value and carries out early warning; Described failure threshold R2, when resistance value is down to this value, failure of insulation is reported to the police, and cuts off the equipotential line between shield door and rail.
As optimal way, wherein said threshold value of warning R1 is 3M Ω, and described failure threshold R2 is 0.5M Ω.
As optimal way, subway shield door insulated monitoring system described in the utility model, wherein said pick-up unit one end is connected on the column of subway shield door.
The utility model is owing to adopting technique scheme, detection instruction can be regularly sent by control processor, resistor detecting device directly, in real time detect shield door and utterly between insulation resistance value, thus the situation of change monitoring this resistance in real time can be realized, when resistance drops to threshold value of warning, carry out early warning, thus warning staff overhauls; Report to the police immediately when resistance is reduced to inefficacy resistance, and keep the equipotential line between shield door and rail to disconnect.Compared with prior art, the present invention can realize Real-Time Monitoring, gives warning in advance, and has good safety and reliability.
Accompanying drawing explanation
Fig. 1 is subway shield door insulated monitoring system schematic of the present utility model.
Fig. 2 is the process flow diagram of the utility model subway shield door insulated monitoring method.
Embodiment
See illustrating subway shield door insulated monitoring system described in the utility model in Fig. 1, figure, it comprises: pick-up unit 1, PLC control processor 2, on-off controller 3, warning device 4;
This pick-up unit 1 one end is connected on subway shield door 100, and another termination utterly 300, for detecting shield door 100 relative to the resistance value between ground; Pick-up unit 1 comprises at least 10 resistor detecting devices 11, A/D modular converter 12 and an output module 13; The present embodiment resistor detecting device is 15; 15 resistor detecting devices 11 are connected to 15 check points A1, A2 of shield door 100 respectively by L4 uniform intervals ... A15, can by check point A1, A2 ... A15 is located on the column of shield door 100; These 15 resistor detecting device 11 other ends by L7 with 300 to be connected, for measuring shield door 100 insulation resistance value over the ground utterly; A/D modular converter 12 converts digital signal to the resistance value detected; Output module 13 utilizes 485 bus modes to send PLC control processor to digital signal.
This PLC control processor 2, for sending detection instruction to pick-up unit, and control the equipotential line switched on and off between shield door 100 and rail 200, compare with threshold value for receiving shield door 100 that described pick-up unit 1 detects relative to the resistance value between utterly, resistance is down to threshold value of warning R1 and is sent early warning signal; Resistance sends alerting signal when being down to failure threshold R2, disconnects the line between shield door 100 and rail 200;
This break-make connector 3 is connected on equipotential line L1, the L2 between shield door 100 and rail 200, for controlling the break-make of the equipotential line between rail 200 and shield door 100; The instruction that break-make connector 3 receives PLC control processor 2 switches on and off the equipotential line between shield door and rail.
This warning device 4 is for receiving instruction early warning or the warning of PLC control processor 2.
Wherein, the quantity of resistor detecting device 11 is arranged according to the length of shield door and resistance, make resistor detecting device shield door and utterly between the voltage that applies be less than 36V safe voltage for equaling.
Further, this supervisory system also comprises a display terminal 5, for showing testing result.
In the present embodiment, described threshold value of warning R1 resistance is 3 × 106 Ω, is down to this value carries out early warning when resistance value; Described failure threshold R2 is 0.5 × 106 Ω, is down to this value and reports to the police, failure of insulation when resistance value, cuts off equipotential line.
See Fig. 2, subway shield door insulated monitoring method described in the utility model is:
Control processor 1 such as, at interval of T time section, 3-5 minute, or interval is longer or shorter time sends and starts to detect instruction, sends control signal, the equipotential line between instantaneous disconnection shield door 100 and rail 200 to on-off controller 4 simultaneously;
15 resistor detecting devices in pick-up unit, respectively to check point A1, A2 that shield door 100 is evenly arranged ... A15 and 300 apply load rated safety voltages utterly, thus this check point detecting shield door 100 with utterly 300 insulation resistance value;
Compare recording resistance value with the threshold value set in control processor 2, when reaching threshold value of warning R1 resistance, the present embodiment is 3 × 106 Ω, sends early warning signal, then connects the equipotential line between shield door 100 and rail 200, waits for that next time detects instruction; When detected resistance reaches failure threshold R2 resistance, R2 is 0.5 × 106 Ω, sends alerting signal, keeps the equipotential line off-state between shield door 100 and rail 200;
When detected resistance is greater than threshold value of warning R1, during 3 × 106 Ω resistance, connect the equipotential line between shield door 100 and rail 200, wait for that next time detects instruction.
Detection method of the present utility model, mainly by the equipotential line between instantaneous disconnection shield door and rail, instantaneous detection shield door and utterly between insulation resistance value, when being greater than threshold value of warning, equipotential line between demand working shield door and rail, waits for that next time detects instruction; If be less than or equal to threshold value of warning to carry out early warning, remind staff's maintenance, the equipotential line simultaneously between demand working shield door and rail, wait for that next time detects instruction; Report to the police when resistance is reduced to failure threshold, keep the equipotential line off-state between shield door and rail, thus real-time monitoring can be realized, give warning in advance; After effectively avoiding failure of insulation, shield door applies great electric current by the cable that integrates with to shield door body with the voltage difference in equipotential utterly and rail; It has good safety and reliability.
Above embodiment is only be described the utility model; but not the summary of being restricted property; under the guidance that those of ordinary skill in the art conceive at the utility model; the amendment on a lot of conventional structure and replacement can also be made; such as change the quantity of resistor detecting device; change the quantity of threshold value of warning, these amendments also should be considered to belong among protection scope of the present invention with replacement.
Claims (8)
1. a subway shield door insulated monitoring system, is characterized in that, it comprises:
One pick-up unit, this pick-up unit one end is connected on subway shield door, other end ground connection, for detecting shield door relative to the resistance value between utterly;
One PLC control processor, detect instruction and control switch on and off equipotential line between shield door and rail for sending, comparing with threshold value for receiving shield door that described pick-up unit detects relative to the resistance value between utterly, when reaching threshold value of warning R1, sending early warning signal; Send alerting signal when reaching failure threshold R2, send control signal to on-off controller, disconnect the equipotential line between shield door and rail;
One on-off controller, on-off controller is connected on the equipotential line between shield door and rail, and the instruction for receiving PLC control processor switches on and off the equipotential line between shield door and rail;
One warning device, receives instruction early warning or the warning of PLC control processor.
2. subway shield door insulated monitoring system according to claim 1, is characterized in that: described supervisory system also comprises a display terminal, for showing testing result.
3. subway shield door insulated monitoring system according to claim 1, is characterized in that: described pick-up unit comprises at least 10 resistor detecting devices, an A/D modular converter and an output module; One end of described several resistor detecting device is connected to shield door respectively by L4 uniform intervals, this several resistor detecting device other end by L7 be connected utterly, for measuring shield door resistance over the ground; Modular converter converts digital signal to the resistance value detected; Output module sends PLC control processor to digital signal.
4., according to the subway shield door insulated monitoring system of claim 1-3 according to any one of it, it is characterized in that: described threshold value of warning R1, be down to this value when resistance value and carry out early warning; Described failure threshold R2, when resistance value is down to this value, failure of insulation is reported to the police, and cuts off the equipotential line between shield door and rail.
5. subway shield door insulated monitoring system according to claim 4, it is characterized in that: described threshold value of warning R1 is 3M Ω, described failure threshold R2 is 0.5M Ω.
6., according to the subway shield door insulated monitoring system of claim 1-3 according to any one of it, it is characterized in that, described pick-up unit one end is connected on the column of subway shield door.
7. subway shield door insulated monitoring system according to claim 4, is characterized in that, described pick-up unit one end is connected on the column of subway shield door.
8. subway shield door insulated monitoring system according to claim 5, is characterized in that, described pick-up unit one end is connected on the column of subway shield door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095009.5U CN204479657U (en) | 2015-02-10 | 2015-02-10 | Subway shield door insulated monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095009.5U CN204479657U (en) | 2015-02-10 | 2015-02-10 | Subway shield door insulated monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN204479657U true CN204479657U (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520095009.5U Expired - Fee Related CN204479657U (en) | 2015-02-10 | 2015-02-10 | Subway shield door insulated monitoring system |
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| Country | Link |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742915A (en) * | 2015-04-15 | 2015-07-01 | 西南交通大学 | Selective opening and closing type equipotential connecting device of subway shield door and control method of device |
| CN105372561A (en) * | 2015-10-08 | 2016-03-02 | 宁波南车电气设备有限公司 | A novel shield door insulation monitoring and early warning system |
| CN105988039A (en) * | 2015-02-10 | 2016-10-05 | 刘春梅 | Subway shield door insulation monitoring system and method |
| CN108110677A (en) * | 2018-02-05 | 2018-06-01 | 刘春梅 | A kind of intelligent inspection system for high voltage cable |
| CN111599071A (en) * | 2020-04-30 | 2020-08-28 | 杭州拓深科技有限公司 | Insulation detection protection device and insulation detection protection method for high-voltage power distribution room |
| CN114609990A (en) * | 2022-01-19 | 2022-06-10 | 宁波邑畅交通设备科技有限公司 | Platform door intelligent operation maintenance system and maintenance management method thereof |
-
2015
- 2015-02-10 CN CN201520095009.5U patent/CN204479657U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105988039A (en) * | 2015-02-10 | 2016-10-05 | 刘春梅 | Subway shield door insulation monitoring system and method |
| CN104742915A (en) * | 2015-04-15 | 2015-07-01 | 西南交通大学 | Selective opening and closing type equipotential connecting device of subway shield door and control method of device |
| CN105372561A (en) * | 2015-10-08 | 2016-03-02 | 宁波南车电气设备有限公司 | A novel shield door insulation monitoring and early warning system |
| CN108110677A (en) * | 2018-02-05 | 2018-06-01 | 刘春梅 | A kind of intelligent inspection system for high voltage cable |
| CN108110677B (en) * | 2018-02-05 | 2024-02-27 | 西藏谦诚信息科技有限公司 | Intelligent inspection system for high-voltage cable |
| CN111599071A (en) * | 2020-04-30 | 2020-08-28 | 杭州拓深科技有限公司 | Insulation detection protection device and insulation detection protection method for high-voltage power distribution room |
| CN114609990A (en) * | 2022-01-19 | 2022-06-10 | 宁波邑畅交通设备科技有限公司 | Platform door intelligent operation maintenance system and maintenance management method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 |
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| CF01 | Termination of patent right due to non-payment of annual fee |