CN108169569A - A kind of rail monitors system and its control method to drainage net transition resistance - Google Patents
A kind of rail monitors system and its control method to drainage net transition resistance Download PDFInfo
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- CN108169569A CN108169569A CN201810125942.0A CN201810125942A CN108169569A CN 108169569 A CN108169569 A CN 108169569A CN 201810125942 A CN201810125942 A CN 201810125942A CN 108169569 A CN108169569 A CN 108169569A
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- intelligent control
- control module
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- rail
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
System and its control method are monitored to drainage net transition resistance the invention discloses a kind of rail, wherein, monitoring system is：Intelligent control module is connect with microcomputer management system by Ethernet interface, receives the instruction of microcomputer management system, and upload error message and monitoring result to microcomputer management system；Intelligent control module is connect with side rail wear by the communications cable, receives the running state information of side rail wear；Intelligent control module is connect with drainage branch switch in current drainage cabinet by the communications cable, and in monitoring, control drainage branch is held off；Intelligent control module is connect with power supply module by the communications cable, receives current data, controls power supply module break-make；Intelligent control module is connect with high-acruracy survey module by the communications cable, receiving voltage data, and is calculated according to electric current, voltage, display, uploaded and preserve rail to drainage net transition resistance.Present invention monitoring is accurate, easy to operate, and reliability is high, easy to maintain.
Description
Technical field
The present invention relates to field of track traffic, particularly a kind of rail monitors system and its control to drainage net transition resistance
Method.
Background technology
The earth-free DC power-supply system of power supply generally use suspension of urban track traffic, using rail as train electric current
Current return circuit.Since rail is in itself there are longitudinal electrical resistance, while rail is installed on the ground by fastener, exist over the ground certain
Transition resistance, when the current flows, voltage-to-ground, i.e. rail current potential will be generated on rail.Rail current potential is excessively high personnel to be threatened to pacify
Entirely, and due to presence of the rail to drainage net transition resistance, flow through rail electric current some leak to underground, become miscellaneous
Dissipate electric current.Stray electrical current has the metal structure around rail the corrosion effect of electrolysis form, and calamity may be caused when serious
Consequence.
The rail of circuit is inspected periodically to drainage net transition resistance, safeguard procedures is taken when transition resistance is too low, is limit
The effective scheme of rail potential processed and stray electrical current.Mostly at present is to drainage net transition electricity by manual method sampling Detection rail
Resistance, there are following defects：There are randomnesss for sampling；There are large errors for artificial wiring and reading；Manpower consumption is big, detection week
Phase is long.
Invention content
The technical problems to be solved by the invention are to provide a kind of rail and monitor system and its control to drainage net transition resistance
Method processed realizes automatic monitoring of the rail to drainage net transition resistance, has monitoring accurately, and easy to operate, reliability is high, is easy to
The features such as safeguarding, being integrated to existing scramble current monitoring system and current drainage cabinet ensures the safe operation of subway system.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of rail monitors system to drainage net transition resistance, is surveyed including intelligent control module, power supply module and high-precision
Measure module；
Intelligent control module is connect with microcomputer management system by Ethernet interface, receives the instruction of microcomputer management system,
And upload error message and monitoring result to microcomputer management system；Intelligent control module is logical with side rail wear (OVPD)
Communications cable connection is crossed, receives the running state information of side rail wear；Intelligent control module and drainage in current drainage cabinet
Branch switch is connected by the communications cable, and in monitoring, control drainage branch is held off；Intelligent control module and power supply module
It is connected by the communications cable, receives current data, control power supply module break-make；Intelligent control module leads to high-acruracy survey module
Cross communications cable connection, receiving voltage data；Intelligent control module is calculated according to electric current, voltage, display, is uploaded and is preserved rail
To drainage net transition resistance；
With the track section at midpoint carried out by traction formed one monitoring section, monitoring section length between 1km to 4km it
Between；The medium position and left and right both ends for monitoring section are mounted on high-acruracy survey module；High-acruracy survey module is mounted on steel
Trackside has 6 road Measurement channels, and for channel 1~2 for measuring rail to drainage net pressure drop, channel 3~6 is longitudinal for measuring rail
10m pressure drops；Voltage data is uploaded to intelligent control module by high-acruracy survey module by the communications cable.
Further, power supply module is integrated in current drainage cabinet, and anode is connect with drawing institute's direct current negative busbar, cathode and row
Flow the drainage net terminal connection in cabinet；Power supply module has constant current function, while is integrated with high precision closed loop Hall current sensing
Device, for monitoring output current.
A kind of rail includes the following steps the control method of drainage net transition resistance monitoring system：
Step 1：Intelligent control module carries out address coding, record to each high-acruracy survey module in monitoring section in advance
The channel and location information of high-acruracy survey module, the length for monitoring section, establish database, to store various information and monitoring
Data；Monitoring instruction is assigned to intelligent control module by microcomputer management system or is opened by the monitoring on intelligent control module
It assigns pass；Monitoring carries out after withdrawal of train；
Step 2：After receiving Monitoring instruction, intelligent control module first receives monitoring section interior rail potential limiting device
Operating status, if there is side rail wear closure, intelligent control module stops monitoring, and relevant information is included in screen
On, and upload microcomputer management system；If being closed without side rail wear, intelligent control module is on microcomputer management system
" monitoring " signal is passed, after microcomputer management system receives this signal, is latched the intelligent control module of other track sections, no
Respond Monitoring instruction；
Step 3：Before power supply module output current is controlled, power supply module measures current noise, high-acruracy survey module
Voltage noise is measured, is uploaded to intelligent control module；Intelligent control module according to the amplitude of variation of current noise, voltage noise,
Monitoring section is judged with the presence or absence of failure or electrical Interference, if in the presence of intelligent control module stops monitoring, and relevant information is shown
Show and upload；
Step 4：If there is no failure and electrical Interference, after noise testing, intelligent control module control power supply module
Constant current is exported between rail and drainage net, power supply module measures electric current, and high-acruracy survey module measures voltage, is uploaded to
Intelligent control module；Intelligent control module using real-time current, voltage calculate rail to drainage net transition resistance, and by electric current,
Voltage and real-time result of calculation show, preserve and upload；
Intelligent control module calculates rail to drainage net transition resistance using real-time current, voltage, and circular is：
Single steel rail longitudinal direction 10m resistance Rl_10m, unit m Ω
In formula, UkFor the rail longitudinal direction 10m pressure drops in the middle part of monitoring section, UkoffIt makes an uproar for corresponding rail longitudinal direction 10m pressure drops
Sound, k=1~4 represent 4 paths of the high-acruracy survey module measurement rail longitudinal direction 10m pressure drops of a line, and k=5~8 represent another
The high-acruracy survey module of a line measures 4 paths of rail longitudinal direction 10m pressure drops, and I is that power supply module is injected into monitoring section
Total current is measured by power supply module；
Section rail is monitored to drainage net transition resistance Rg, unit Ω
In formula, UPiBe monitoring section in the middle part of rail to drainage net pressure drop, UPioffIt is corresponding rail to drainage net pressure
Noise reducing；UAPiRail for monitoring section one end is to drainage net pressure drop, UAPioffIt is corresponding rail to drainage net pressure drop noise；
UBPiTo monitor the rail of the section other end to drainage net pressure drop, UBPioffIt is corresponding rail to drainage net pressure drop noise；I=1
~2 high-acruracy survey modules for representing a line measure rail to 2 paths of drainage net pressure drop, and i=3~4 represent another row
High-acruracy survey module measures 2 paths of the rail to drainage net pressure drop；UAjRail longitudinal direction 10m pressures for monitoring section one end
Drop, UAjoffFor corresponding rail longitudinal direction 10m pressure drop noises；UBjTo monitor the rail longitudinal direction 10m pressure drops of the section other end, UBjoff
For corresponding rail longitudinal direction 10m pressure drop noises；The high-acruracy survey module that j=1~2 represent a line measures rail longitudinal direction 10m pressures
2 paths of drop, j=3~4 represent 2 paths of the high-acruracy survey module measurement rail longitudinal direction 10m pressure drops of another row；
1km rail is to drainage net transition resistance Rg_1km, unit Ω/km
Rg_1km=Rg×L
In formula, L is the length for monitoring section, measures good and is stored in intelligent control module in advance；
Step 5：After electric current, voltage measurement, " monitoring terminates " is believed in intelligent control module control power supply module shutdown
Microcomputer management system number is uploaded to, after microcomputer management system receives signal, makes other intelligent control module unlockings.
Compared with prior art, the beneficial effects of the invention are as follows：Power supply module is integrated in existing current drainage cabinet, does not increase cabinet
Body, newly-increased wiring is few, has saved space and cost；High-acruracy survey module In situ Measurement electric current, voltage data, then pass through communication
Data are uploaded intelligent control module by cable, ensure that the accuracy of electric current, voltage data；By receiving on-off signal, it is ensured that
It is off-state to monitor OVPD in section, by measuring current noise, voltage noise, it is ensured that monitoring section there is no failure and
Electrical Interference ensure that the reliability of monitoring result；Microcomputer management system and each intelligent control module are connected by Ethernet
It connects, realizes all fronts rail to the sectional of drainage net transition resistance, all standing, long-range monitoring.
Description of the drawings
Fig. 1 is topology diagram of the present invention.
Fig. 2 is communication scheme of the present invention.
Fig. 3 is power supply module scheme of installation of the present invention.
Fig. 4 is high-acruracy survey module data instrumentation plan of the present invention.
Fig. 5 is monitoring data schematic diagram of the present invention.
Fig. 6 is control flow chart of the present invention.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, a kind of rail monitors system to drainage net transition resistance, surveyed including intelligent control module, high-precision
Measure module and power supply module；Intelligent control module is connected with microcomputer management system by Ethernet interface；Intelligent control module with
Power supply module, current drainage cabinet drainage branch connected by the communications cable, control the break-make of power supply module and drainage branch；Intelligence control
Molding block is connected with high-acruracy survey module, OVPD by the communications cable；Intelligent control module is in advance to high-acruracy survey module
Address coding, record installation site, monitoring section length information are carried out with OVPD, the length of record monitoring section establishes number
According to library, to store and manage various information and monitoring data.
As shown in Fig. 2, being formed a monitoring section with the track section at midpoint carried out by traction, the length for monitoring section is not small
In 1km, no more than 4km；Power supply module is mounted in current drainage cabinet, and constant current is provided, while be integrated with high-precision for monitoring section
Closed-loop Hall current sensor is spent, measure power supply module output current and uploads intelligent control module；Monitor section middle part and two
By the uplink and downlink rail at end, high-acruracy survey module is installed, for measuring the voltage data of uplink and downlink rail；Monitor section
Interior power supply module, high-acruracy survey module and OVPD is connected to intelligent control module by the communications cable, with intelligent control
Module is into row data communication；Intelligent control module manages system by Ethernet connected with computer, receives microcomputer management system and assigns
Instruction or upload error message and monitoring result to microcomputer management system.
Monitoring instruction can be assigned from microcomputer management system to intelligent control module or by the monitoring on intelligent control module
Switch is assigned；Intelligent control module sends " monitoring " information after Monitoring instruction is connected to, to microcomputer management system；Microcomputer pipe
After reason system receives information, it can be latched other intelligent control modules, be not responding to Monitoring instruction；Can by microcomputer management system or
Monitoring switch on intelligent control module terminates to monitor, also predeterminable monitoring time, automatically begins to and terminates monitoring.
After Monitoring instruction is connected to, intelligent control module receives traction institute and each station in monitoring section by the communications cable
The status information that OVPD is sent, if the situation that monitoring section memory is closed in OVPD, intelligent control module is without any monitoring
Operation, shows error message and is sent to microcomputer management system on the screen；In monitoring, intelligent control module control drainage branch
Road is held off, until monitoring terminates.
As shown in figure 3, power supply module is integrated in traction institute current drainage cabinet, anode is connect with drawing institute's direct current negative busbar,
Cathode is connect with drainage net terminal in current drainage cabinet；Power supply module has constant current function, can provide constant current for monitoring section section；
High precision closed loop Hall current sensor is installed, for monitoring the total of power supply module injection on the positive outside wire of power supply module
Electric current；The switching signal of power supply module is K1, the switching signal of drainage branch is K2, 0 represents shutdown, and 1 represents conducting；K1、K2It is logical
It crosses the communications cable and is connected to intelligent control module.
As shown in figure 4, high-acruracy survey module is mounted on by rail, there are 6 road Measurement channels；The error of channel 1~2 is little
In 0.1V, for monitoring uplink and downlink rail to drainage net pressure drop；The error of channel 3~6 is not more than 0.1mV, for monitoring,
The 10m pressure drops of downlink rail longitudinal direction；Mounted on traction near high-acruracy survey module, channel 3~4 and channel 5~6 are arranged respectively
Cloth is in return wire both sides；High-acruracy survey module mounted on monitoring section both ends, disconnect and 3~4 or disconnect 5~
6。
As shown in figure 5, measure the rail longitudinal direction 10m pressure drops U of monitoring section one endA1~UA4(mV) and rail is to drainage net
Pressure drop UPA1~UPA4(V)；Measure the rail longitudinal direction 10m pressure drops U of the monitoring section other endB1~UB4(mV) and rail is to drainage net
Pressure drop UPB1~UPB4(V)；Measure the rail longitudinal direction 10m pressure drops U in the middle part of monitoring section1~U8(mV), rail is to drainage net pressure drop
UP1~UP4(V)；Measure the total current I that power supply module is injected into monitoring section；The length for monitoring section is L (km).
As shown in fig. 6, after intelligent control module receives Monitoring instruction, closed if monitoring section OVPD and drainage branch are in
Disconnected state first measures the rail longitudinal direction 10m pressure drop noises U of monitoring section one end in the case of being not powered onA1off~UA4off(mV),
With rail to drainage net pressure drop noise UPA1off~UPA4off(V), the rail longitudinal direction 10m pressure drop noises U of the section other end is monitoredB1off
~UB4off(mV) and rail is to drainage net pressure drop noise UPB1off~UPB4off(V), the rail longitudinal direction 10m pressures in the middle part of section are monitored
Noise reducing U1off~U8off(mV), rail is to drainage net pressure drop noise UP1off~UP4off(V) and current noise Ioff, and store
Into database.In measurement process, intelligent control module is big by noise fluctuations amplitude (difference of maxima and minima)
It is small, judge that monitoring section whether there is failure or electrical Interference；If meet the following conditions：Current noise fluctuating range is more than
0.2A, the fluctuating range of one or more rail longitudinal direction 10m pressure drop noises are more than 0.1mV, and one or more rail are to drainage net
The fluctuating range of pressure drop noise is more than 0.1V, then shows to monitor section there are failure or electrical Interference, at this time intelligent control module
Error message is shown on the screen and is sent to microcomputer management system, while stop monitoring operation；The time of measuring of noise can root
It is set according to on-site actual situations；If monitoring section, there is no electrical Interferences, after noise testing and record is completed, intelligent control mould
Block calculates the average value of each noise in entire time of measuring respectively, the noise as each monitoring variable.
After success obtains noise, intelligent control module controls power supply module to inject constant DC current to monitoring section,
After certain time, electric current is waited for stablize, high-acruracy survey module measures monitoring data, and intelligent control module receives monitoring data,
And rail is calculated in real time to drainage net transition resistance, computational methods are：
Single steel rail longitudinal direction 10m resistance
Section rail is monitored to drainage net transition resistance
1km rail is to drainage net transition resistance
Rg_1km=Rg×L(Ω/km)。
Intelligent control module stores monitoring data and real-time result of calculation in the database, is displayed on the screen, and on
Reach microcomputer management system；After monitoring, intelligent control module control power supply module shutdown, to rail to drainage net transition electricity
Real-time monitoring result averaged is hindered, preserves, show and uploads, while on microcomputer management system as final monitoring result
" monitoring terminates " information is passed, microcomputer management system makes other intelligent control module unlockings.
Claims (3)
1. a kind of rail to drainage net transition resistance monitor system, which is characterized in that including intelligent control module, power supply module and
High-acruracy survey module；
Intelligent control module is connect with microcomputer management system by Ethernet interface, receives the instruction of microcomputer management system, and to
Microcomputer management system uploads error message and monitoring result；Intelligent control module passes through the communications cable with side rail wear
Connection receives the running state information of side rail wear；Intelligent control module leads to drainage branch switch in current drainage cabinet
Communications cable connection is crossed, control drainage branch is held off in monitoring；Intelligent control module passes through communication line with power supply module
Cable connects, and receives current data, controls power supply module break-make；Intelligent control module passes through the communications cable with high-acruracy survey module
Connection, receiving voltage data；Intelligent control module is calculated according to electric current, voltage, display, is uploaded and is preserved rail to drainage net mistake
Cross resistance；
One monitoring section is formed with the track section at midpoint carried out by traction, monitoring section length is between 1km between 4km；Prison
The medium position and left and right both ends for surveying section are mounted on high-acruracy survey module；High-acruracy survey module is mounted on by rail,
There are 6 road Measurement channels, channel 1~2 for measuring rail to drainage net pressure drop, for measuring rail longitudinal direction 10m press by channel 3~6
Drop；Voltage data is uploaded to intelligent control module by high-acruracy survey module by the communications cable.
2. a kind of rail as described in claim 1 monitors system to drainage net transition resistance, which is characterized in that power supply module collection
Into in current drainage cabinet, anode is connect with drawing institute's direct current negative busbar, and cathode is connect with the drainage net terminal in current drainage cabinet；Power supply
Module has constant current function, while is integrated with high precision closed loop Hall current sensor, for monitoring output current.
3. the control method of monitoring system as described in claim 1, which is characterized in that include the following steps：
Step 1：Intelligent control module carries out address coding to each high-acruracy survey module in monitoring section in advance, records high-precision
The channel of measurement module and location information, the length for monitoring section are spent, establishes database, to store various information and monitoring number
According to；Monitoring instruction is assigned to intelligent control module by microcomputer management system or by the monitoring switch on intelligent control module
It assigns；Monitoring carries out after withdrawal of train；
Step 2：After receiving Monitoring instruction, intelligent control module first receives the operation of monitoring section interior rail potential limiting device
State, if there is side rail wear closure, intelligent control module stops monitoring, and relevant information is displayed on the screen, and
Upload microcomputer management system；If being closed without side rail wear, intelligent control module uploads " just to microcomputer management system
Monitoring " signal, after microcomputer management system receives this signal, the intelligent control module of other track sections is latched, is not responding to
Monitoring instruction；
Step 3：Before power supply module output current is controlled, power supply module measures current noise, and high-acruracy survey module measures
Voltage noise is uploaded to intelligent control module；Intelligent control module judges according to the amplitude of variation of current noise, voltage noise
Section is monitored with the presence or absence of failure or electrical Interference, if stop monitoring in the presence of, intelligent control module, and by relevant information show with
It uploads；
Step 4：If there is no failure and electrical Interference, after noise testing, intelligent control module controls power supply module to steel
Constant current is exported between rail and drainage net, power supply module measures electric current, and high-acruracy survey module measures voltage, is uploaded to intelligence
Control module；Intelligent control module calculates rail to drainage net transition resistance using real-time current, voltage, and by electric current, voltage
It shows, preserve and uploads with real-time result of calculation；
Step 5：After monitoring, " monitoring terminates " signal is uploaded to microcomputer by intelligent control module control power supply module shutdown
Management system after microcomputer management system receives signal, makes other intelligent control module unlockings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810125942.0A CN108169569B (en) | 2018-02-08 | 2018-02-08 | Rail-to-drain network transition resistance monitoring system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810125942.0A CN108169569B (en) | 2018-02-08 | 2018-02-08 | Rail-to-drain network transition resistance monitoring system and control method thereof |
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| CN108169569A true CN108169569A (en) | 2018-06-15 |
| CN108169569B CN108169569B (en) | 2023-06-27 |
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| CN114966216A (en) * | 2022-08-01 | 2022-08-30 | 中铁电气化勘测设计研究院有限公司 | Steel rail longitudinal resistance and transition resistance measuring system |
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| CN115840086A (en) * | 2023-02-16 | 2023-03-24 | 中铁电气化勘测设计研究院有限公司 | Urban rail transit steel rail insulation performance monitoring system |
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| CN108169569B (en) | 2023-06-27 |
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