CN1763789A - Engine signal operation monitoring and insulating system - Google Patents
Engine signal operation monitoring and insulating system Download PDFInfo
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- CN1763789A CN1763789A CN 200410083875 CN200410083875A CN1763789A CN 1763789 A CN1763789 A CN 1763789A CN 200410083875 CN200410083875 CN 200410083875 CN 200410083875 A CN200410083875 A CN 200410083875A CN 1763789 A CN1763789 A CN 1763789A
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- signal
- locomotive
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention discloses a locomotive signal monitoring and isolation system, which comprises the following parts: locomotive signal monitoring and isolation device, hand-held equipment and administration computer, wherein the hand-held equipment conveys the collection data record of signal monitoring and isolation device to the storage and communicates with the administration computer through serial port, which leads the recorded data into the administration computer to do analytic disposal and statistics and prints report and operation curve. Part of the device is set on the locomotive to eliminate safety hidden danger in time, which protects locomotive safe operation.
Description
Technical field
The present invention relates to the cab signal monitoring technology, particularly a kind of cab signal operational monitoring and shielding system.
Background technology
Traditional locomotive operation signal system is based on ground signal, and cab signal is auxilliary.Lifting along with train running speed, the locomotive operation signal system progressively develops into based on cab signal, ground signal is the signal system of assisting, and cab signal also becomes the main signal guidance of train operation gradually, and whether cab signal the reliable and stable security of operation that will be directly connected to train.For guaranteeing safe train operation, must carry out the whole process monitoring to cab signal, existing way is to rely on experienced maintainer, judges the cab signal operation troubles origin cause of formation by rule of thumb, the maintenance of in good time removing obstacles is to guarantee the stable no mess code of cab signal.But this method is had relatively high expectations to the maintainer, and accuracy often varies with each individual, and is stable inadequately, is difficult to guarantee that the cab signal operation troubles can both in time be got rid of.
Summary of the invention
Task of the present invention is: propose a kind of cab signal operation monitoring system, this system can gather in real time, analyze and handle cab signal parameter, and common operator on duty can fix a breakdown according to form.
Therefore the present invention proposes a kind of locomotive operation signal monitoring and shielding system, and this system is made up of a cab signal monitoring and spacer assembly, a handheld device and a supervisory computer.Cab signal monitoring and spacer assembly are gathered isolation module, kilometer post read module, leakage current sensor, Single Chip Microcomputer (SCM) system etc. by power module, voltage acquisition module, induced voltage acquisition module, No. eight signal lamps and are formed.Wherein voltage acquisition module is used to monitor the variation of locomotive input voltage and the variation of cab signal supply voltage output, when this voltage overshoot scope, in private memory, all the other times are only monitored not record as a recorded and stored promptly current magnitude of voltage to be comprised current time, milimeter number together with other parameter of current monitoring; The induced voltage acquisition module is used to monitor the size of track circuit inductive voltage value.When lamp and frequent saltus step appear adjusting to white in the cab signal lamp, promptly inductive voltage value up till now together with other parameter of current monitoring, comprise current time and milimeter number etc. as a recorded and stored in private memory, all the other times are only monitored not record; No. eight signal lamp acquisition modules be used to monitor No. eight signal lamps and/the downing switch state.When lamp and frequent saltus step appear adjusting to white in No. eight signal lamps or on/when downstream state changes, soon work as headlight position and last/downstream state other parameter together with current monitoring, comprise current time and milimeter number etc. as a recorded and stored in private memory, all the other times are only monitored not record.Leakage current sensor is used to monitor the variation of locomotive input voltage to the leakage current of locomotive car body.Can calculate the insulating resistance value of locomotive input voltage by leakage current to car body, when insulation resistance during less than specialized range, promptly insulating resistance value up till now together with other parameter of current monitoring, comprise current time, milimeter number etc. as a recorded and stored in private memory, all the other times are only monitored not record.Single Chip Microcomputer (SCM) system is made of single-chip microcomputer, storer, time system and serial ports etc., carry out following program: system initialization, determine the function of each port, serial ports baud rate, A/D sampling rate, sampling interval are set, open timer and global interrupt, system enters waiting status: if the sampling time arrives, system enters the sampling timing interrupt service routine, and the sampling timing interrupt service routine is finished the collection of all parameters and processing; If this has a certain parameter to exceed standard in gathering, then all parameters with this collection recorded in the private memory together with time and kilometer post information; If there is not the parameter that exceeds standard during this is gathered, system directly returns master routine, waits for the arrival of sampling instant next time.Handheld device is made of CPU, display screen, keyboard, serial ports etc., by serial ports the record data that cab signal is monitored and spacer assembly collects are dumped in the storer of handheld device, communicate by letter with supervisory computer by serial ports then, record data are imported carry out analyzing and processing, demonstration, printing in the supervisory computer.
Cab signal of the present invention monitoring and spacer assembly are placed on the locomotive, can be to the cab signal continuous monitoring, isolate and carry out real-time analysis and processing, and common operator on duty can fix a breakdown according to form, thereby ensures locomotive operation safety.The present invention can pass through handheld device, realizes locomotive identification is carried out in every cab signal monitoring and spacer assembly, and running section, the date, bookkeepings such as clock check and correction, usable range is wide.
Description of drawings
Fig. 1 is signal monitoring and spacer assembly module relation diagram for the present invention forms structured flowchart Fig. 2
Fig. 3 is that voltage acquisition module schematic diagram Fig. 4 is an induced voltage acquisition module schematic diagram
Fig. 5 is that No. eight signal lamp acquisition module schematic diagram Fig. 6 are kilometer post read module schematic diagram
Fig. 7 is that Single Chip Microcomputer (SCM) system working routine process flow diagram Fig. 9 is a sampling timing interrupt service routine process flow diagram
Fig. 8 is a serial ports service routine process flow diagram
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Fig. 1 forms structured flowchart for the present invention, and as shown in the figure, the present invention is made up of cab signal monitoring and spacer assembly, handheld device and supervisory computer three parts.Cab signal monitoring and spacer assembly link to each other with supervisory computer by serial ports, handheld device, serial ports, by power module, voltage acquisition module, induced voltage acquisition module, No. eight signal lamp acquisition modules, kilometer post read module, leakage current sensor,, Single Chip Microcomputer (SCM) system etc. forms.Single Chip Microcomputer (SCM) system is made of single-chip microcomputer, storer, time system, serial ports etc.
Fig. 2 has described the annexation between each module and the mainboard for cab signal monitoring and spacer assembly module relation diagram, indicate among the figure "." circuit terminal all be the interface of system by aviation plug and external unit; the interface of system and external unit has adopted the form of regulation; this interface shape make system can with different cab signal system compatibles, and be convenient to install, as long as with the plug of correspondence mutually to inserting.
Locomotive 110V input voltage is through inserting cab signal monitoring and spacer assembly behind the leakage current sensor, it is received on the power module of device on the one hand, through the DC/DC of power module conversion, for device provides operating voltage; On the other hand, it is received on the voltage acquisition module as one of parameter of device monitoring, by the isolation and the linear transformation of voltage acquisition module, is input to the A/D sample port 0 of single-chip microcomputer, is sampled and is handled by single-chip microcomputer.Leakage current sensor becomes voltage output with the size conversion of leakage current, and this voltage is directly inputted to the A/D sample port 2 of single-chip microcomputer, is sampled and is handled by single-chip microcomputer.If locomotive 110V input voltage has leakage current to exist to locomotive car body, leakage current sensor will have voltage output, and the voltage of this leakage current and leakage current sensor is output into linear proportional relation, i.e. U (output voltage)=K
*I (leakage current).One of parameter that cab signal power supply 50V output voltage also need be monitored as the present invention is received on the connection terminal that cab signal is monitored and the 50V of spacer assembly imports, isolation and linear transformation by voltage acquisition module, be input to the A/D sample port 1 of single-chip microcomputer, sample and handle by single-chip microcomputer.The collection of induced voltage is that the two ends of track circuit inductive coil are received respectively on the S1 and S2 terminal of induced voltage acquisition module, this inductive coil is output as an ac small signal, behind isolation, linear amplification and the true rms value convertor of induced voltage acquisition module, become the A/D sample port 3 that the DC voltage amount is input to single-chip microcomputer, sample and handle by single-chip microcomputer.Locomotive No. eight signal lamp states (L, LU, UU, U, U2, HU, H, B) and last/downstream state (U/D) are received eight street lamp signal acquisition module by connection terminal respectively, isolate and linear transformation by No. eight signal lamp acquisition modules, be input to 9 general input of single-chip microcomputer, gather the level state of these 9 ports by single-chip microcomputer and judge cab signal lamp and last/downstream state.
Single-chip microcomputer is gathered primary information every 500ms, and regard them as a record, after finishing every record, collection to handle this record, judging whether every territory in this record exists exceeds cab signal and moves normal situation, if have, single-chip microcomputer then reads current time and milimeter number from time system and kilometer post acquisition module, and this record is saved in the private memory together with time and milimeter number, the operator on duty can pass to supervisory computer with all records by handheld device and carry out analyzing and processing.
Figure 3 shows that the voltage acquisition module schematic diagram.In order to guarantee that the cab signal system is not subjected to the influence of native system, system adopts Slc800 precision linear photo-coupler that the power supply amount of gathering is isolated to locomotive 110V voltage and cab signal power supply output 50V voltage acquisition the time.Slc800 precision linear photo-coupler is made up of an isolation feedback light diode and an output optical diode of infrared light LED irradiation divergent configuration.The feedback light diode absorbs the part of LED luminous flux and produces control signal, the linear ratio of servo luminous flux that output signal that the output optical diode produces and LED send.Slc800 is with current system work, the working current I of its luminotron LED
FBe operated in about 1-10mA, therefore use operational amplifier as importing to drive LETD, the feedback light diode produces electric current I
P1Flow through R15+R16, R15+R16 receives the inverting input of input amplifier.Photocurrent I
P1Value satisfy relational expression I
P1=V
I/ R15+R16 (V
IBe input analog voltage), this electric current is directly proportional with the LED electric current, and scale-up factor is feedback transmission gain K
1(K
1=I
P1/ I
F).The electric current I that same output optical diode produces
P2Flow through the R11 and the R13 of series connection, and two resistance in seriess receive the normal phase input end of output amplifier, the output terminal of output amplifier links to each other with inverting input, so the output voltage V after the linear isolation
OSatisfy relational expression V
O=I
P2* (R11+R13), this electric current is directly proportional with the LED electric current, and scale-up factor is forward transmitted gain K
2(K
1=I
P2/ I
F).R15+R16 ≈ R11+R13 is satisfied in the selection of resistance basically, and output relation V is arranged
O=V
IK
3(R11+R13)/(R15+R16), K3 is a transmission gain, is forward gain and the ratio of servo gain, and K3=K2/K1, and the representative value of K3 is 1.Make K3 (R11+R13)/(R15+R16)=1 in order to offset the deviation from linearity that K3 causes by adjusting potentiometer R16 and R11, compensate K3 and exceed part, make the linear relationship of input and output more satisfactory.
Fig. 4 shows induced voltage acquisition module schematic diagram.Impact in order to be unlikely to that the cab signal main frame is received the track induction information, guarantee traffic safety, between the input end of track inductive coil and AD736 chip, insert an isolated amplifier ISO124, the track induced voltage is input to the high impedance input end of AD736 after ISO124 isolates, the induced voltage of input is carried out the computing of " square → average → extract square root " and obtains the effective value of induced voltage.
Fig. 5 shows No. eight signal lamp acquisition module schematic diagrams.Eight street lamp signal acquisition module offer other subscriber equipment with No. eight signal lamp states and use after isolating, this eight street lamp signals after isolating, when maloperation such as short circuit, overcurrent, overvoltage to these signals in use appears in other user, will can No. eight signal lamp states on the locomotive not impacted.System can not influence eight street lamp signals and last/descending state on the locomotive in order to guarantee to gather, and optical coupling isolator TLP521-4 and two kinds of chips of 4N35 are selected in the collection of eight street lamp signals and last/downing switch amount for use.TLP521-4 and 4N35 are identical on usage, and TLP521-4 is four tunnel optical coupling isolator, and 4N35 is one road optical coupling isolator.When certain road signal is high level 50V, after dividing potential drop and voltage stabilizing, make the light emitting diode conducting of the input end of optocoupler, cause the output terminal phototriode saturation conduction of optical coupling isolator, correspondence is output as high level.Otherwise when certain road signal was low level 0V, the not conducting of light emitting diode of optocoupler input end caused the output terminal phototriode of optical coupling isolator to turn-off, and correspondence is output as low level.
Figure 6 shows that kilometer post read module schematic diagram.Train TAX2 case outwards sends a train information every 50ms in real time with the RS-485 form, comprising the kilometer post information of train.For the assurance system can not influence TAX2 at work, kilometer post reads the RS-485 communication data interface chip MAX1480B that chip has selected for use electrical equipment to isolate fully, and the signal of MAX1480B and power supply are by the isolation barrier transmission.Power supply is delivered to the side of isolation on restraining barrier by logic side (non-side of isolation) by centre-tapped transformer, and the signal by the restraining barrier passes to the logic side via photo-coupler.It generally has the ability of isolating several KPV (kilovolt peak value), can make the data of detecting unit interference-free, system is out of order and does not influence other unit.Kilometer post information converts the information of RS-232 form to through MAX1480B, is received by the UART mouth of single-chip microcomputer, and the 74HC86 chip is used for the transmission of control signal among the figure.
Fig. 7 is the single-chip microcomputer working routine process flow diagram of cab signal monitoring and spacer assembly, and promptly single-chip microcomputer is to the program flow diagram of data acquisition and processing (DAP).As shown in Figure 7, behind electrification reset, single-chip microcomputer at first carries out the initialization of system, determine the function of each port, and serial ports baud rate (19200bps), A/D sampling rate (8MHz/16), sampling interval (500ms) are set, and open timer and global interrupt, system enters waiting status.If the sampling time, (500ms) arrived, system enters the sampling timing interrupt service routine, shown in 9, finishes collection and processing to all parameters in the sampling timing interrupt service routine.If this has a certain parameter to exceed standard in gathering, then all parameters with this collection recorded in the storer together with time and kilometer post information.If there is not the parameter that exceeds standard during this is gathered, system directly returns master routine, waits for the arrival of sampling instant next time.
Cab signal monitoring and spacer assembly are installed on the locomotive, locomotive should carry out primary calibration before going out car, it is operating personnel obtain current time and this locomotive from supervisory computer by handheld device locomotive unit number, calibration operation by to cab signal monitoring and spacer assembly downloads to these initialization informations on this device.When the operator on duty need obtain the data of this device simultaneously, also can be sent to supervisory computer analysis, add up, print and show by the data that exceed standard that handheld device is gathered this device.These " calibration " and " peek " operations by handheld device all realize by serial communication.Cab signal monitoring and spacer assembly are after initialization finishes, except the 500ms timing sampling that carries out parameter, if any the serial communication interrupt request, then enter in the serial ports interrupt service routine, as shown in Figure 8, the serial ports interrupt service routine is at first judged " peek " or " calibration " order, in this way " peek " order the record then all are kept at storer to pass to handheld device, " calibration " order then receives current time and locomotive unit number information from handheld device in this way.This device monitoring cycle is 0.5 second, promptly every 0.5 second to influential cab signal parameter acquisition once, all collections are photoelectricity and isolate mode of operation.
Claims (5)
1, a kind of cab signal operational monitoring and shielding system, it is characterized in that: this system comprises a signal monitoring and spacer assembly, a handheld device and a supervisory computer, this signal monitoring and spacer assembly are by power module, voltage acquisition module, the induced voltage acquisition module, No. eight signal lamp acquisition modules, the kilometer post read module, leakage current sensor, compositions such as Single Chip Microcomputer (SCM) system, voltage acquisition module joins through leakage current sensor and locomotive input voltage, be used to monitor the variation of locomotive input voltage, join by connection terminal and cab signal electric power output voltage, be used to monitor the variation of locomotive electromotive voltage signal output; The induced voltage acquisition module links to each other with track circuit inductive coil two ends respectively by terminal, is used to monitor the variation of track circuit induced voltage; Eight street lamp signal acquisition module are connected with last/downstream state (U/D) with locomotive No. eight signal lamp states (L, LU, UU, U, U2, HU, H, B) by connection terminal, be used to monitor No. eight signal lamps and/downstream state; Leakage current sensor links to each other with voltage acquisition module, power module and locomotive input voltage respectively by connection terminal, be used to monitor of the variation of locomotive input voltage to the locomotive car body leakage current, and be input to the corresponding sample port of single-chip microcomputer respectively, sample and handle by single-chip microcomputer; This handheld device is made of CPU, serial ports, display screen and keyboard, can the record data of cab signal monitoring and spacer assembly collection be imported supervisory computer with the mode of communicating by letter by serial ports and carry out analyzing and processing.
2, system according to claim 1 is characterized in that: described voltage acquisition module carries out linearity by Slc800 precision linear photo-coupler to the power supply amount signal of gathering isolates.
3, system according to claim 1, it is characterized in that: described induced voltage acquisition module is input to the AD736 chip with the track induced voltage again and carries out the conversion of induced voltage effective value by insert an isolated amplifier ISO124 between the input end of track inductive coil and AD736 chip after isolating.
4, system according to claim 1 is characterized in that: No. eight signal lamp acquisition modules are isolated signal by two kinds of chips of optical coupling isolator TLP521-4,4N35.
5, system according to claim 1 is characterized in that: the kilometer post read module is by the electric RS-485 communication data interface chip MAX1480B that isolates fully, with kilometer post information by the RS-485 format conversion to the RS-232 form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100838759A CN100437644C (en) | 2004-10-21 | 2004-10-21 | Engine signal operation monitoring and insulating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100838759A CN100437644C (en) | 2004-10-21 | 2004-10-21 | Engine signal operation monitoring and insulating system |
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| Publication Number | Publication Date |
|---|---|
| CN1763789A true CN1763789A (en) | 2006-04-26 |
| CN100437644C CN100437644C (en) | 2008-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100838759A Active CN100437644C (en) | 2004-10-21 | 2004-10-21 | Engine signal operation monitoring and insulating system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837736A (en) * | 2010-04-16 | 2010-09-22 | 株洲高新技术产业开发区壹星科技有限公司 | Leakage current detection way and device of electric locomotive power supply system |
| CN105631966A (en) * | 2014-12-01 | 2016-06-01 | 中车大连电力牵引研发中心有限公司 | Rail train convertor equipment data recording device |
| CN106093544A (en) * | 2016-06-17 | 2016-11-09 | 湖南中车时代通信信号有限公司 | Collection shunting signal, locomotive digital quantity signal and electrical locomotive power three-in-one detection device |
| CN111645722A (en) * | 2020-05-25 | 2020-09-11 | 哈尔滨市科佳通用机电股份有限公司 | Locomotive signal application state on-vehicle analysis method and device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051045C (en) * | 1994-03-04 | 2000-04-05 | 黄金富 | Real-time continuous detecting method and system for train runing parameters |
| CN1208908A (en) * | 1997-08-20 | 1999-02-24 | 天一电子通信系统株式会社 | Managing method for vehicle service information |
| CN2452802Y (en) * | 2000-12-08 | 2001-10-10 | 武民利 | Carried by locomotive-type route dynamic monitoring device |
| CN1212248C (en) * | 2003-09-22 | 2005-07-27 | 北京交大思诺科技有限公司 | General signal data recorder for cocomotive |
-
2004
- 2004-10-21 CN CNB2004100838759A patent/CN100437644C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837736A (en) * | 2010-04-16 | 2010-09-22 | 株洲高新技术产业开发区壹星科技有限公司 | Leakage current detection way and device of electric locomotive power supply system |
| CN105631966A (en) * | 2014-12-01 | 2016-06-01 | 中车大连电力牵引研发中心有限公司 | Rail train convertor equipment data recording device |
| CN105631966B (en) * | 2014-12-01 | 2017-11-24 | 中车大连电力牵引研发中心有限公司 | The tape deck of track train convertor equipment data |
| CN106093544A (en) * | 2016-06-17 | 2016-11-09 | 湖南中车时代通信信号有限公司 | Collection shunting signal, locomotive digital quantity signal and electrical locomotive power three-in-one detection device |
| CN111645722A (en) * | 2020-05-25 | 2020-09-11 | 哈尔滨市科佳通用机电股份有限公司 | Locomotive signal application state on-vehicle analysis method and device |
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| Publication number | Publication date |
|---|---|
| CN100437644C (en) | 2008-11-26 |
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