CN2614347Y - On-line monitoring device for stray current of subway - Google Patents

On-line monitoring device for stray current of subway Download PDF

Info

Publication number
CN2614347Y
CN2614347Y CN 03221117 CN03221117U CN2614347Y CN 2614347 Y CN2614347 Y CN 2614347Y CN 03221117 CN03221117 CN 03221117 CN 03221117 U CN03221117 U CN 03221117U CN 2614347 Y CN2614347 Y CN 2614347Y
Authority
CN
China
Prior art keywords
exit
stray current
current
chip
links
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 03221117
Other languages
Chinese (zh)
Inventor
李威
严旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT filed Critical China University of Mining and Technology CUMT
Priority to CN 03221117 priority Critical patent/CN2614347Y/en
Application granted granted Critical
Publication of CN2614347Y publication Critical patent/CN2614347Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

A subway stray current corrosion on-line monitoring device substantially comprises a construction steel measuring terminal, a current drainage net measuring terminal, a Cu/CuSO4 reference electrode, an 89C52 single-chip, an ICL7135 A/D converter, a 75LBC184 series interface chip and a reset circuit with watchdog X2504 which are electrically connected, can remotely transmit the data detected to a central control room through the standard RS485 interface and reacts the metal corrosion situation caused by the stray current timely, the utility model is convenient to take measures for lightening and reducing the leakage of the stray current timely, has great effect and broad practicability.

Description

Metro stray current corrosion on-Line Monitor Device
One, technical field
The utility model relates to a kind of metro stray current corrosion on-Line Monitor Device, is particularly suitable for the on-line monitoring of stray current corrosion in subway or the light rail systems.
Two, background technology
Direct current supply is adopted in the power supply of subway or light rail systems usually, utilize rail as the line of return, be very easy to produce stray current, near failing to be convened for lack of a quorum and cause, stray electrical buries the ground structure thing, as the corrosion of running water pipe, gas pipe, cable and reinforced concrete structures, cause serious consequence, so reduce stray current corrosion as far as possible, the metal erosion situation that the monitoring stray current causes is the problem that must consider in the subway construction.Metro stray current corrosion situation is to obtain by monitoring metal construction or the polarized potential of pipeline, the track current potential analysis-by-synthesis of rail.Usually the monitoring of subway stray current corrosion, the measuring method of instrument, field wiring is carried in many employings temporarily.This method mainly contains following drawback:
1, stray current mainly is the result that the electrochemical reaction long term produces to the corrosion of tunnel agent structure steel and metal pipe line.And on-the-spot haywire wiring is measured, and can not reflect the subway stray current situation of whole working times, and measurement result has certain randomness, and confidence level is not high;
2, owing to be local measurement, measurement result can not reflect whole subway line stray current distribution situation;
3, the condition of work of in-site measurement and tunnel space restriction is made troubles and danger to measurement.
Three, technology contents
1. goal of the invention
The purpose of this utility model is to provide a kind of metro stray current corrosion on-Line Monitor Device, a kind of can real time on-line monitoring subway metal construction, along the situation of change of the track current potential of the polarized potential of road pipeline and rail, and the information remote of all monitorings is sent in the microcomputer management system of central control room, for providing, subway operation maintenance personnel safeguard foundation.
2. technical scheme
The utility model metro stray current corrosion on-Line Monitor Device, form by a single chip circuit and 6 electrodes, single chip circuit is made up of single-chip microcomputer, A/D converter, serial interface chip and reset strap watchdog circuit, and electrode is to be embedded in underground contrast electrode and structural steel measurement terminal, current drainage net measurement terminal, track and the earth electrical connection composition.Single chip circuit is made up of single-chip microcomputer, A/D converter, reset strap watchdog circuit, standard RS485 serial line interface.Measure the polarizing voltage of wall construction steel, enter by differential amplifier by the measurement terminal exit DV2 of exit that is embedded near the contrast electrode 1 the structural steel and structural steel and to carry out signal transformation, its output links to each other with multicircuit switch, the measurement terminal exit that is embedded near the exit of the contrast electrode 2 the current drainage net and current drainage net enters another differential amplifier and carries out signal transformation, its output links to each other with multicircuit switch, by track exit and the earth exit process electric resistance partial pressure, its output links to each other with multicircuit switch.This data collector can detect structural steel polarized potential, solid concrete roabed current drainage net polarized potential and the rail potential of measurement point.The polarized potential of structural steel is to draw measurement terminal and the voltage that is embedded in advance between near the structural steel the contrast electrode obtains by the measurement structure steel, solid concrete roabed current drainage net polarized potential be by measure the current drainage net draw measurement terminal with near the contrast electrode that is embedded in advance the current drainage net between voltage obtain, rail potential is directly to obtain by the voltage between measurement rail and the earth.Generally speaking, certain measurement point of stray current corrosion need detect above 3 parameters in the subway system, and whole subway has several measurement points along the line, so data collector is furnished with the RS485 interface of standard, can be sent to measurement data in the central control room microcomputer management system by the RS485 bus network and goes.Data collector carries out a data acquisition at regular intervals, gather 3 signals respectively, Single-chip Controlling multicircuit switch in the gatherer process, timesharing is gathered each signal, 3 corresponding signals is converted to digital quantity through AD converter sends into specified memory and store.Stray current corrosion is the result of long-term accumulative total, so real corrosion index is whether to surpass set quota by the forward mean value of judging polarized potential in a period of time.The instantaneous value sum that the forward mean value of polarized potential is gathered in equaling during this period of time in a period of time deducts the natural ontology current potential divided by the number of times of being gathered.The natural ontology current potential is each polarized potential of being surveyed when not having stray current to influence behind the withdrawal of train at midnight.Bus is connected with microcomputer management system because each data collector all passes through standard RS485, so microsystem is every preestablish the time can be from the corrective command of each data collector issue body potential of trend, each data collector carries out body potential automatically and proofreaies and correct.Simultaneously, the maximal value of data acquisition system (DAS) track current potential that each section period is gathered is also sent into specified memory.The valid data of the relevant stray current corrosion of data collector collection calculating are that structural steel is in the forward mean value of a period of time polarized potential, the forward mean value and the maximal value of track current potential a period of time of current drainage net a period of time polarized potential like this.The master-slave mode communication structure is adopted in the communication of microcomputer management system and each data collector, and each data collector all has the substation address of oneself, and its address is stored in the EEPROM of serial.Every period of microcomputer management system is wanted above three data to each data collector, forms database and inquires about for operating personnel, and the numerical value of surveying when certain measurement point surpasses prescribed limit values, sends alerting signal.
3. technique effect
The utility model metro stray current corrosion on-Line Monitor Device can real-time online measuring subway tunnel inner structure reinforcing bar, the corrosion situation that causes of the current drainage net stray current in the solid concrete roabed.Can constitute standard RS485 bus structure by comprehensive wiring, form whole subway line stray current comprehensive monitor system, the data collector of each monitoring point is the forward mean value, the forward mean value and the maximal value of track current potential a period of time of current drainage net a period of time polarized potential of measurement structure steel a period of time polarized potential simultaneously, and remote transmission is in the microcomputer management system of central control room, for reducing the stray current corrosion of subway, guarantee the safe operation of subway system, reliable data are provided, have practicality widely.
Four, description of drawings
Accompanying drawing is the utility model data collector circuit theory diagrams.
Five, embodiment
Below in conjunction with accompanying drawing an enforcement of the present utility model is described further:
The utility model metro stray current corrosion on-Line Monitor Device, whole device is a monolithic processor controlled data collector, and IC1 is a single-chip microcomputer, adopts 89C52, it is the control core of whole device, and AD converter is selected dual integration AD (IC2:ICL7135) for use; Measure the polarizing voltage of wall construction steel, by the measurement terminal exit (DV2) of exit (DV1) that is embedded near (Cu/CuSO4) contrast electrode 1 the structural steel and structural steel enter by resistance (R8, R9, R10) and (R11) and the differential amplifier that constitutes of operational amplifier (IC4:OP07) carry out signal transformation, it is output as (AI0), links to each other with (X0) of multicircuit switch (IC3:4052); Measure the polarizing voltage of solid concrete roabed current drainage net, by the measurement terminal exit (DV4) of exit (DV3) that is embedded near (Cu/CuSO4) contrast electrode 2 the current drainage net and current drainage net enter by resistance (R12, R13, R14) and (R15) and the differential amplifier that constitutes of operational amplifier (IC5:OP07) carry out signal transformation, it is output as (AI1), links to each other with (X1) of multicircuit switch (IC3:4052).Measure rail potential, pass through resistance (R16) and (R17) dividing potential drop by track exit (DV5) and the earth exit (DV6), it is output as (AI2), links to each other with (X2) of multicircuit switch (IC3:4052).(P1.4, the P1.5) of single-chip microcomputer (IC1:89C52) links to each other with (A, the B) of multicircuit switch (IC3:4052) respectively, and control input AI0, AI1 and AI2 and output (IC3:4052) (X) conducting are used for program acquisition time 3 road input signals.The output (X) of multicircuit switch (IC3:4052) links to each other with (INH) of AD converter (IC2:ICL7135), is used for the simulating signal of input is entered the analog input end of AD converter.(P0) of single-chip microcomputer (IC1:89C52) mouthful links to each other with control line with the data line of AD converter (IC2:ICL7135) respectively with (IC1:P20, P21, P22, P23), be used to read the digital quantity that AD converter is changed, (P1.6) of single-chip microcomputer (IC1:89C52) links to each other with (R/H) end of AD converter (IC2:ICL7135), is used for control and starts the AD conversion.(IC6:X25045) for resetting, house dog and serial EEPROM trinity chip, (P1.0) of single-chip microcomputer (IC1:89C52) links to each other with (CS) of (IC6:X25045) end, be used for regularly sending out pulse and to the chip select line of serial EEPROM read and write data to watchdog circuit, (P1.1) end of single-chip microcomputer (IC1:89C52) links to each other with (SI) end of (IC6:X25045), be used for to the serial EEPROM write data, (P1.2) end of single-chip microcomputer (IC1:89C52) links to each other with (SCK) end of (IC6:X25045), send out synchronizing pulse when being used for reading and writing data with serial EEPROM, (P1.3) end of single-chip microcomputer (IC1:89C52) links to each other with (SO) end of (IC6:X25045), be used for from the serial EEPROM read data, (RESET) end of single-chip microcomputer (IC1:89C52) links to each other with (RST) end of (IC6:X25045), when system powers on or button (SW1) when pressing, produce the high level reset signal, being used for single-chip microcomputer resets, the auxiliary resistance of resistance (R1) for resetting, electric capacity (C1) strobes to reset signal.The whole data collection device is furnished with standard RS485 interface, be to realize by serial communication conversion chip (IC11:75LBC184), for guaranteeing the reliability of system communication, host CPU part is partly carried out photoelectricity by photoelectrical coupler with the RS485 change-over circuit and is isolated in the system, so the working power of system has two cover power supplys, be respectively VCC and+5V, it also has two with reference to ground, GND and GND1, two power supplys all are independently with ground, do not have direct electrical link.(3) pin of (P1.7) the end Sheffer stroke gate (IC7B:74HC04) of single-chip microcomputer (IC1:89C52) links to each other, not gate plays driving action, (4) pin of not gate (IC7B:74HC04) links to each other with (1) pin of photoelectrical coupler (IC10:TLP521-1), power supply VCC links to each other with (2) pin of photoelectrical coupler (IC10:TLP521-1) by resistance (R6), (3) pin of photoelectrical coupler (IC10:TLP521-1) links to each other with GND1, + 5V links to each other with (4) pin of (IC10:TLP521-1) by resistance R 7, (the RE of this pin of while and serial communication conversion chip (IC11:75LBC184), DE) link to each other, (P1.7) pin of single-chip microcomputer (IC1:89C52) is through photoelectrical coupler (IC10:TLP521-1) opto-electronic conversion, (the RE of control (IC11:75LBC184), DE) end is finished the transmission of serial communication and is received conversion.(TXD) of single-chip microcomputer (IC1:89C52) carries out opto-electronic conversion through photoelectrical coupler (IC9:TLP521-1) after by the driving of not gate (IC7:74HC04), links to each other with (D) end of (IC11:75LBC184), finishes the transmission of standard 485 serial communications.(IC11:75LBC184) (R) end carries out opto-electronic conversion through photoelectrical coupler (IC8:TLP521-1), links to each other with (RXD) of single-chip microcomputer (IC1:89C52), finishes standard 485 serial communications and receives.(IC11:75LBC184) (A B) is standard RS485 communication bus terminals, its extension line be (S1, S2).Whole subway stray current corrosion on-line monitoring system is by (S1, S2) wiring networking links to each other with the microcomputer management system of central control room, finishes the monitoring of subway stray current corrosion completely.

Claims (3)

1. metro stray current corrodes on-Line Monitor Device, it is characterized in that: it is made up of a single chip circuit and 6 electrodes, single chip circuit is electrically connected by single-chip microcomputer, A/D converter, serial interface chip and reset strap watchdog circuit to be formed, and electrode is to be embedded in underground Cu/CuSO4 contrast electrode and structural steel measurement terminal, current drainage net measurement terminal, track and the earth composition.
2. metro stray current corrosion on-Line Monitor Device according to claim 1, it is characterized in that: described single-chip microcomputer model is 89C52, and the A/D converter model is ICL7135, and expanding has standard RS485 serial interface chip, and model is 75LBC184.
According to claim 1 and 2 described subway trains to level detecting apparatus, it is characterized in that: the polarizing voltage of measuring the wall construction steel, enter by resistance R 8 by the exit DV1 that is embedded near the Cu/CuSO4 contrast electrode 1 the structural steel and the measurement terminal exit DV2 of structural steel, R9, the differential amplifier that R10 and R11 and operational amplifier IC4:OP07 constitute carries out signal transformation, it is output as AI0, link to each other with the X0 of multicircuit switch IC3:4052, being embedded near the exit DV3 of the Cu/CuSO4 contrast electrode 2 of current drainage net and the measurement terminal exit DV4 of current drainage net enters by resistance R 12, R13, the differential amplifier that R14 and R15 and operational amplifier IC5:OP07 constitute carries out signal transformation, it is output as AI1 and links to each other with the X1 of multicircuit switch IC3:4052, by track exit DV5 and the earth exit DV6 process resistance R 16 and R17 dividing potential drop, it is output as AI2, links to each other with the X2 of multicircuit switch IC3:4052.
CN 03221117 2003-04-11 2003-04-11 On-line monitoring device for stray current of subway Expired - Fee Related CN2614347Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03221117 CN2614347Y (en) 2003-04-11 2003-04-11 On-line monitoring device for stray current of subway

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03221117 CN2614347Y (en) 2003-04-11 2003-04-11 On-line monitoring device for stray current of subway

Publications (1)

Publication Number Publication Date
CN2614347Y true CN2614347Y (en) 2004-05-05

Family

ID=34244503

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03221117 Expired - Fee Related CN2614347Y (en) 2003-04-11 2003-04-11 On-line monitoring device for stray current of subway

Country Status (1)

Country Link
CN (1) CN2614347Y (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101226682B (en) * 2007-01-19 2010-08-18 同济大学 Device for monitoring stray current of novel subway
CN102175597A (en) * 2011-01-21 2011-09-07 中国矿业大学 On-line monitoring method of metro stray current corrosion on-line monitoring system
CN102590600A (en) * 2012-01-06 2012-07-18 徐州润泽电气有限公司 Stray current sensor of subway reflux system
CN103792418A (en) * 2014-01-06 2014-05-14 沈阳化工大学 Intelligent stray current testing instrument
CN105954183A (en) * 2016-06-07 2016-09-21 宁波工程学院 Terminal device for detecting or monitoring reinforced concrete structure durability experiment parameters
CN106569017A (en) * 2016-11-15 2017-04-19 深圳市科安达轨道交通技术有限公司 Rail transit stray current detection method and detection system
CN108717139A (en) * 2018-07-18 2018-10-30 浙江浙能天然气运行有限公司 A kind of steel oil-gas pipeline monitoring of stray current device
WO2019150784A1 (en) * 2018-02-05 2019-08-08 株式会社日立製作所 Metallic structure corrosion evaluating system
CN110672679A (en) * 2018-07-02 2020-01-10 天津职业技术师范大学 Soil potential gradient measuring instrument
CN113030658A (en) * 2021-03-03 2021-06-25 珠海南自电气系统工程有限公司 Stray current integrated monitoring system
CN114154414A (en) * 2021-11-30 2022-03-08 徐州中矿传动轨道科技有限公司 Cloud computing-based subway stray current leakage high-risk interval identification method and system and storage medium

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101226682B (en) * 2007-01-19 2010-08-18 同济大学 Device for monitoring stray current of novel subway
CN102175597A (en) * 2011-01-21 2011-09-07 中国矿业大学 On-line monitoring method of metro stray current corrosion on-line monitoring system
CN102590600A (en) * 2012-01-06 2012-07-18 徐州润泽电气有限公司 Stray current sensor of subway reflux system
CN103792418A (en) * 2014-01-06 2014-05-14 沈阳化工大学 Intelligent stray current testing instrument
CN105954183B (en) * 2016-06-07 2019-05-10 宁波工程学院 A kind of terminal installation for detecting or monitoring for reinforced concrete structure durability experiment parameter
CN105954183A (en) * 2016-06-07 2016-09-21 宁波工程学院 Terminal device for detecting or monitoring reinforced concrete structure durability experiment parameters
CN106569017A (en) * 2016-11-15 2017-04-19 深圳市科安达轨道交通技术有限公司 Rail transit stray current detection method and detection system
CN106569017B (en) * 2016-11-15 2019-03-05 深圳市科安达轨道交通技术有限公司 A kind of rail traffic stray electrical current detection method and detection system
WO2019150784A1 (en) * 2018-02-05 2019-08-08 株式会社日立製作所 Metallic structure corrosion evaluating system
CN110672679A (en) * 2018-07-02 2020-01-10 天津职业技术师范大学 Soil potential gradient measuring instrument
CN108717139A (en) * 2018-07-18 2018-10-30 浙江浙能天然气运行有限公司 A kind of steel oil-gas pipeline monitoring of stray current device
CN113030658A (en) * 2021-03-03 2021-06-25 珠海南自电气系统工程有限公司 Stray current integrated monitoring system
CN113030658B (en) * 2021-03-03 2023-09-15 珠海南自电气系统工程有限公司 Stray current comprehensive monitoring system
CN114154414A (en) * 2021-11-30 2022-03-08 徐州中矿传动轨道科技有限公司 Cloud computing-based subway stray current leakage high-risk interval identification method and system and storage medium
CN114154414B (en) * 2021-11-30 2024-04-16 徐州中矿传动轨道科技有限公司 Subway stray current leakage high-risk interval identification method, system and storage medium based on cloud computing

Similar Documents

Publication Publication Date Title
CN2614347Y (en) On-line monitoring device for stray current of subway
CN101226682B (en) Device for monitoring stray current of novel subway
CN201277062Y (en) Mine water trouble monitoring and intelligent early-warning system
CN102175597A (en) On-line monitoring method of metro stray current corrosion on-line monitoring system
CN105634138A (en) Multifunctional three-phase electric power monitoring apparatus
CN105203158A (en) Automatic horizontal displacement and sedimentation monitoring system based on GPRS
CN103309325A (en) Three-dimension-visualization dynamic monitoring system and monitoring method for prestressed steel structures
CN111562283B (en) Instrument for automatically measuring frost heaving deformation of full section of channel and measuring and mounting method
CN201152171Y (en) Drilling mud integral parameter measuring equipment
CN201522555U (en) Remote atmosphere parameter continuous real-time monitoring device
CN102590600A (en) Stray current sensor of subway reflux system
CN2581950Y (en) Intelligent apparatus for measuring and displaying water information, and metering used water quantity
CN219016814U (en) Safety monitoring device for high formwork system
CN103439562A (en) Portable stray current tester
CN102705012A (en) Monitoring system of coal roadway roof separation based on M-BUS
CN205317245U (en) Monitoring system is mixed to long distance water delivery tunnel safety
CN201731903U (en) Thermometric remote transmission centralized meter reading control system
CN205691633U (en) A kind of Intelligent reading list processing equipment reducing electric-power metering line loss
CN209471362U (en) A kind of urban drainage pipe network water level monitoring Intelligent Data Collection System Terminal
CN202659282U (en) Coal roadway roof abscission layer monitoring system based on M-BUS
CN212342034U (en) Subway construction safety monitoring system based on wireless sensor network
CN217276304U (en) Thermotechnical universal meter
CN213803993U (en) Real-time acquisition system for metal pipeline cathode protection
CN2719867Y (en) Underground pipeline in-situ parameter collecting system
CN111458062B (en) Instrument for automatically measuring three-dimensional frost heaving force of channel and measuring and mounting method thereof

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee