CN110687445A - Railway signal circuit relay state monitoring system and method - Google Patents
Railway signal circuit relay state monitoring system and method Download PDFInfo
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Abstract
The embodiment of the invention discloses a system and a method for monitoring the state of a relay of a railway signal circuit. This relay state monitoring system includes: the contact resistance data acquisition system comprises a plurality of infrared temperature measurement sensors, acquires temperature information of corresponding relay contact positions and converts the temperature information into relay contact resistance information; the station machine is used for carrying out communication protocol conversion and uploading on the relay contact resistance information; and the data processing system is used for comparing and analyzing the relay contact resistance information with the corresponding preset relay contact resistance threshold range, and performing contact resistance fault judgment, fault early warning or fault warning of the corresponding relay. The embodiment of the invention realizes the centralized monitoring of each relay in the railway signal circuit, can early warn the occurrence of contact faults of various relays, and can give an alarm in time when the contact faults of the relays occur, thereby ensuring the timely processing of the faults and avoiding the influence on normal rail traffic caused by the abnormity of the railway signal circuit.
Description
Technical Field
The embodiment of the invention relates to the technical field of rail transit, in particular to a system and a method for monitoring the state of a relay of a railway signal circuit.
Background
The relay is a general name of various relays used in railway signals. The relay comprises a switch conversion control circuit, a relay used in a signal lighting control circuit, a binary two-position relay and other relays. Railways have strict requirements on relays; the contact system must act consistently, reliably and accurately; the service life is long; the function of closing and opening the circuit is enough; the high electric insulation strength is maintained under the condition that the external temperature and humidity change greatly; has stable time characteristic and electric parameter characteristic. According to the action principle, the relay can be divided into an electromagnetic relay, an induction relay and a thermal relay; according to the working current, the relay can be divided into a direct current relay, an alternating current relay and an alternating current-direct current relay; the operation speed can be divided into a quick-operation electric appliance, a normal-operation relay and a slow-operation relay. Most signal relays belong to direct current, quick-acting and electromagnetic relays.
The working state of the relay directly reflects whether the signal equipment works normally or not, and even influences the driving safety. For example, the filament relay used in the lighting control circuit has the abnormal working state parameters which can affect the brightness of the signal lamp; the relay can be further influenced to suck up or fall down normally, the state of the signal lamp is abnormal, and the influence is brought to the safety and normal operation of the train. Moreover, the working state of the relay can cause the turnout control circuit to work abnormally, so that the turnout cannot be moved normally, and the safety and efficiency of driving are also affected.
Disclosure of Invention
The invention provides a railway signal circuit relay state monitoring system and method, which are used for carrying out on-line monitoring on a relay in a railway signal circuit, realizing the functions of early warning and alarming of faults and ensuring the railway driving safety.
In a first aspect, an embodiment of the present invention provides a system for monitoring a state of a relay of a railway signal circuit, including:
the contact resistance data acquisition system comprises a plurality of infrared temperature measurement sensors, wherein the infrared temperature measurement sensors are arranged in relays in a railway signal circuit in a one-to-one correspondence manner, and the infrared temperature measurement sensors acquire temperature information of corresponding relay contact positions and convert the temperature information into relay contact resistance information;
the station machine is electrically connected with the plurality of infrared temperature measuring sensors respectively; the station machine is used for receiving the relay contact resistance information of the infrared temperature measurement sensor and performing communication protocol conversion and uploading on the relay contact resistance information;
the data processing system is in communication connection with the station machine and receives the relay contact resistance information sent by the station machine;
and the data processing system compares the relay contact resistance information with a corresponding preset relay contact resistance threshold range, and when the relay contact resistance information exceeds the corresponding preset relay contact resistance threshold range, the data processing system performs contact resistance fault judgment, fault early warning or fault warning corresponding to the relay.
In a second aspect, an embodiment of the present invention further provides a method for monitoring a state of a relay of a railway signal circuit, including:
collecting temperature information of contact positions of relays in a railway signal circuit, and converting the temperature information into relay contact resistance information;
carrying out communication protocol conversion and uploading on the relay contact resistance information;
and comparing the relay contact resistance information with the corresponding preset relay contact resistance threshold range, and when the relay contact resistance information exceeds the corresponding preset relay contact resistance threshold range, performing contact resistance fault judgment, fault early warning or fault warning corresponding to the relay.
The system and the method for monitoring the state of the relay of the railway signal circuit provided by the embodiment of the invention have the advantages that by arranging the contact resistance data acquisition system, the station machine and the data processing system, the relay contact resistance information is collected in a non-contact way through a plurality of infrared temperature measurement sensors in the contact resistance data collection system, then utilize the station machine to give data processing system with contact resistance information transmission, then through the contrastive analysis that data processing system predetermines the threshold value according to the relay contact resistance that corresponds the predetermineeing, carry out the judgement of trouble, the warning of trouble early warning and trouble, realized the centralized monitoring to each relay in the railway signal circuit, on the one hand can early warning all kinds of relay contact trouble emergence, on the other hand can in time report an emergency and ask for help or increased vigilance when a certain relay contact trouble, guarantee timely processing and the maintenance of trouble, thereby avoid railway signal circuit unusual and influence normal track traffic.
Drawings
FIG. 1 is a schematic structural diagram of a railway signal circuit relay status monitoring system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another railway signal circuit relay status monitoring system according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for monitoring the status of a relay in a railway signal circuit according to an embodiment of the present invention;
fig. 4 is a flow chart of another method for monitoring the status of a relay of a railway signal circuit according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a relay state monitoring system of a railway signal circuit according to an embodiment of the present invention, and referring to fig. 1, the relay state monitoring system of the railway signal circuit includes: the contact resistance data acquisition system 100 comprises a plurality of infrared temperature measurement sensors 101, wherein the infrared temperature measurement sensors 101 are arranged in relays in a railway signal circuit in a one-to-one correspondence mode, and the infrared temperature measurement sensors 101 acquire temperature information of corresponding relay contact positions and convert the temperature information into relay contact resistance information; the station machine 200 is respectively and electrically connected with the plurality of infrared temperature measuring sensors 101; the station machine 200 is used for receiving the relay contact resistance information of the infrared temperature measuring sensor 101, and performing communication protocol conversion and uploading on the relay contact resistance information to form relay contact resistance information; the data processing system 300 is in communication connection with the station machine 200, and the data processing system 300 receives the relay contact resistance information sent by the station machine 200; the data processing system 300 compares the relay contact resistance information with the corresponding preset relay contact resistance threshold range, and when the relay contact resistance information exceeds the corresponding preset relay contact resistance threshold range, performs contact resistance fault judgment, fault early warning or fault warning of the corresponding relay.
Various relays in the railway signal circuit are usually arranged in mechanical rooms of stations under an electric service section and are centrally installed on a combined frame, so that monitoring and management are facilitated. The switch combination of the relay can control signal equipment, a track circuit and the like. Corresponding to each relay, an infrared temperature measuring sensor 101 can be installed on the inner wall of the shell of each relay, and the infrared temperature measuring sensor 101 is aligned to the position of a relay contact to carry out non-contact temperature measurement so as to collect temperature data of the contact. The infrared temperature sensor 101 can convert the collected temperature data of the contact into contact resistance information according to the relationship between the contact temperature and the contact resistance. Each infrared temperature measuring sensor 101 in the contact resistance data acquisition system 100 is connected to a station 200 also located in the machine room, and the station 200 is a host deployed in the machine room and has interfaces such as RS422, RS485, and RJ45 ethernet, and may be other devices having the above-mentioned interface capabilities. The station 200 and the infrared temperature sensor 101 can communicate through an RS485 interface.
The data processing system 300 is disposed in a control room of the electric service segment, and may be deployed in a physical server manner or on a cloud platform. The data processing system 300 and the plurality of infrared temperature measuring sensors 101 in the contact resistance data acquisition system 100 are located at two places, so that the communication needs to be performed by using ethernet, and the station 200 is responsible for the conversion of the communication protocol. After receiving the information of the relay contact resistance, the data processing system 300 analyzes and judges the contact state of each relay. Specifically, the corresponding threshold range may be set according to experiments or experiences to compare and determine whether the current contact resistance of each relay is normal. And when the contact resistance of the relay exceeds a preset threshold range, judging that the contact resistance is in fault, or early warning and alarming the fault. It should be noted that, the threshold ranges may be set for the fault pre-warning and the alarm respectively, and obviously, the threshold range of the fault pre-warning is smaller than the threshold range of the fault alarm.
The relay state monitoring system of the railway signal circuit provided by the embodiment of the invention has the advantages that by arranging the contact resistance data acquisition system, the station machine and the data processing system, the relay contact resistance information is collected in a non-contact way through a plurality of infrared temperature measurement sensors in the contact resistance data collection system, then utilize the station machine to give data processing system with contact resistance information transmission, then through the contrastive analysis that data processing system predetermines the threshold value according to the relay contact resistance that corresponds the predetermineeing, carry out the judgement of trouble, the warning of trouble early warning and trouble, realized the centralized monitoring to each relay in the railway signal circuit, on the one hand can early warning all kinds of relay contact trouble emergence, on the other hand can in time report an emergency and ask for help or increased vigilance when a certain relay contact trouble, guarantee timely processing and the maintenance of trouble, thereby avoid railway signal circuit unusual and influence normal track traffic.
The relays related to the railway signal circuit are various, and different railway signal control can be realized through different relay combinations. Specifically, the railway signal circuit comprises a turnout control circuit and a signal lamp control circuit; according to the relay state monitoring system, when the relay state is monitored, the relays in the turnout control circuit and the signal lamp control circuit need to be monitored, so that the turnout control circuit and the signal lamp control circuit are guaranteed to control turnout and signal lamp switching respectively. For a turnout control circuit, a contact resistance data acquisition system in the relay state monitoring system at least needs to acquire contact resistance of a turnout second starting and repeating relay, a turnout starting relay, a guiding general locking relay and a cutting relay. In the turnout control circuit, the combination of the turnout second starting and repeating relay, the turnout starting relay, the guide general locking relay and the cut-off relay controls the normal conversion of turnout conversion equipment together, and signals are represented after the turnout conversion equipment is converted to a position, so that the relay state monitoring system can ensure the normal work of the turnout control circuit by monitoring the state of each relay in the turnout control circuit, thereby ensuring the normal conversion of the turnout conversion equipment and the representation of the signals in place.
To signal lamp control circuit, it includes signal machine control circuit and the signal machine control circuit that enters the station that leaves the station, contact resistance data acquisition system among this relay state monitoring system need monitor filament relay, station track inspection relay, supplementary relay and the train that begins in the signal machine control circuit that leaves the station at least, wherein, filament relay, station track inspection relay, supplementary relay and the train that begins the combination of relay control the state of signal machine that leaves the station jointly, if the signal machine that leaves the station is open. Meanwhile, the contact resistance data acquisition system at least needs to monitor a train signal relay, a receiving locking relay, a turnout indication relay and a first locking relay of the control circuit of the station signal machine, wherein the combination of the filament relay, the station track inspection relay, the auxiliary starting relay and the train starting relay controls the state of the station signal machine together, such as whether the station signal machine is opened or not and whether the station signal machine is kept in an opened state or not after the station signal machine is opened or not.
Obviously, the relay state monitoring system monitors the contact states of the relays in the control circuit of the outbound signal machine and the control circuit of the inbound signal machine, so that the normal operation of the outbound signal machine and the inbound signal machine can be ensured, the influence of relay faults on the train entering and exiting is avoided, and the normal operation of rail transit is ensured.
Besides the turnout control circuit and the signal machine control circuit, the track circuit is also provided with a relay to indicate the occupation condition of the track. Specifically, in the relay state monitoring system provided in the above embodiment, the contact resistance data acquisition system further needs to monitor the operation direction changing relay, the approach advance notice relay, the transmission relay, the departure relay, the track power failure repeat relay, the time relay, and the like in the track circuit, and by monitoring the operation direction changing relay, the approach advance notice relay, the transmission relay, the departure relay, the track power failure repeat relay, and the time relay, accurate representation of the track occupation can be ensured, and it is avoided that the red light band does not disappear after the train passes, the red light band does not disappear after the track circuit is idle, the red light band appears in the direction of change, the white light band remains after the train passes through, and the fault caused by the track circuit relay abnormality such as the white light band does not disappear after the train passes through.
The relay of the track circuit in the above embodiment includes a binary two-position relay, which is a receiving relay of the track circuit itself, directly reflects the state of the track circuit itself, and is also a component device participating in the operation of the track circuit, in addition to a running direction changing relay, an approach advance notice relay, a transmission relay, an exit relay, a track power failure notification relay and a time relay. The accurate representation of the track occupation is directly influenced by the contact state of the binary two-position relay, the normal work of the binary two-position relay can be ensured by monitoring the contact resistance of the binary two-position relay, and the abnormal representation of the track occupation caused by the binary two-position relay is avoided.
The switches, the traffic signal control circuits, and the relays in the track circuits are various in type and complicated in operation, and are not illustrated in this embodiment. The relays that play important roles in turnout control, signal machine control, track circuit signal representation and the like need to be monitored for contact resistance, and of course, a person skilled in the art can also monitor the relays in the railway signal circuit, and the monitoring is not limited here.
In addition, except monitoring the contact resistance of the relay to avoid the contact fault of the relay, the working voltage of the relay is also an important parameter index for judging whether the relay works normally. In view of the above, the embodiment of the invention further provides a system for monitoring the state of the relay of the railway signal circuit. Fig. 2 is a schematic structural diagram of another railway signal circuit relay state monitoring system provided in an embodiment of the present invention, and referring to fig. 2, a signal centralized monitoring system 400 may also be integrated in the relay state monitoring system. The signal centralized monitoring system 400 is used for acquiring the working voltage information of the relay in the railway signal circuit; the signal centralized monitoring system 400 is electrically connected with the station 200, and the station 200 is used for receiving the working voltage information of the relay of the signal centralized monitoring system 400 and performing communication protocol conversion and uploading on the working voltage information of the relay; the data processing system 300 receives the relay working voltage information sent by the station machine 200; the data processing system 300 compares the relay working voltage information with a corresponding preset relay working voltage threshold range, and when the relay working voltage information exceeds the corresponding preset relay working voltage threshold range, performs working voltage fault judgment, fault early warning or fault warning of the corresponding relay.
It should be noted that the signal centralized monitoring system 400 is disposed in a machine room of a locomotive depot, and performs centralized data monitoring on equipment in the machine room, specifically including various modules in a power supply screen and a relay on a relay combination rack. The signal centralized monitoring system 400 collects the working voltage of the relay on the relay combined rack, and the signal centralized monitoring system 400 and the station 200 are electrically connected through the RS422 interface, so that the relay working voltage information can be acquired from the signal centralized monitoring system 400 and then transmitted to the data processing system 300 through the Ethernet. The data processing system 300 is preset with a working voltage threshold range of the corresponding relay, and when the working voltage of the relay exceeds the preset working voltage threshold range, the working fault of the relay is determined, or the alarm and early warning operation of the fault is performed. Likewise, the relay operating threshold range may be set experimentally or empirically to determine whether the relay operating voltage is in an abnormal state.
On the basis of the above embodiment, the data processing system 300 may further be configured to record relay contact resistance information and relay operating voltage information, and form a relay contact resistance time variation curve and a relay operating voltage time variation curve; the data processing system respectively calculates the slopes of the relay contact resistance time change curve and the relay working voltage time change curve, and compares the slopes with corresponding preset slope thresholds; when the slope of the time change curve of the relay contact resistance exceeds a corresponding preset slope threshold, carrying out corresponding relay contact resistance fault early warning; and when the slope of the time change curve of the working voltage of the relay exceeds a corresponding preset slope threshold, carrying out corresponding fault early warning on the working voltage of the relay.
The data processing system 300 may store a large amount of data, and may form a time variation curve of the contact resistance and operating voltage data according to the historical data of the contact resistance and operating voltage of the relay over a period of time. The slope threshold of the change curve of the relay contact resistance and the working voltage can be set by combining with expert experience so as to early warn the abnormal change state of the relay contact resistance and the working voltage, so that the contact easy to age is monitored, and early warning is timely performed when the working voltage is abnormal.
Based on the above embodiment, the data processing system 300 may further establish a relay fault cause database, and perform relay fault cause determination and fault maintenance suggestion according to the relay contact resistance information, the relay working voltage information, and the relay fault cause database.
The fault cause judgment and the fault maintenance suggestion refer to that a fault cause database can be established by combining with expert experience, and when the contact resistance and the working voltage data of the relay are in a certain state, the mapping conditions of the fault cause database are corresponded, so that the corresponding possible fault causes can be obtained, and the maintenance suggestion is given.
Further, since the relay contact resistance is likely to be deteriorated or surface-oxidized, the contact resistance gradually increases with the increase of the service time, and a contact failure is likely to occur, which causes an abnormality in the signal circuit. In order to prepare for the replacement of a relay and the timely replacement thereof in advance of the failure of the relay contact resistance, it is necessary to predict the life of the relay so as to prevent the problem of the shortage of spare parts due to the sudden failure. Based on this, in the system for monitoring the state of the relay of the railway signal circuit provided by the embodiment of the invention, the data processing system 300 can also be used for recording the resistance information of the relay contact and forming a time variation curve of the resistance of the relay contact; and predicting the service life of the corresponding relay according to the time change curve of the relay contact resistance, the current information of the relay contact resistance and a preset threshold range of the relay contact resistance.
The relay contact resistance threshold range described herein refers to a contact resistance threshold at which an abnormality or a failure occurs. When the contact resistance reaches the threshold range, the relay contact resistance is beyond the normal working range, and the relay needs to be replaced. Meanwhile, the time variation curve of the relay contact resistance reflects the trend of the relay contact resistance changing along with time, and the time required for the contact resistance to reach the threshold range of the contact resistance can be judged according to the current contact resistance value, so that the service life of the relay can be predicted. For example, a suitable fitting curve can be set according to experience on the time variation curve of the contact resistance of the relay, and the time when the contact resistance reaches a preset threshold value can be accurately predicted according to the fitting curve, so that the current service life of the relay can be predicted.
The embodiment of the present invention further provides a method for monitoring a state of a relay of a railway signal circuit, fig. 3 is a flowchart of the method for monitoring a state of a relay of a railway signal circuit provided by the embodiment of the present invention, and referring to fig. 3, the method for monitoring a state of a relay of a railway signal circuit includes:
s110, collecting temperature information of contact positions of relays in a railway signal circuit, and converting the temperature information into relay contact resistance information;
the step is essentially a non-contact data acquisition process for the contact resistance of each relay arranged on the combined frame, and can be realized by an infrared temperature measurement sensor. And indirectly acquiring the contact resistance information by using the relation curve of the contact resistance temperature and the resistance.
S120, carrying out communication protocol conversion and uploading on the relay contact resistance information;
because the resistance information of each relay contact needs to be uploaded to a control room of an electric service section, the distance is long, and the data uploading is generally carried out by adopting the Ethernet. Therefore, before uploading the contact resistance information, the data needs to be packaged and encapsulated according to a specific communication protocol, that is, conversion of the communication protocol is performed.
S130, comparing the relay contact resistance information with the corresponding preset relay contact resistance threshold range, and when the relay contact resistance information exceeds the corresponding preset relay contact resistance threshold range, performing contact resistance fault judgment, fault early warning or fault warning of the corresponding relay.
In this step, a threshold range needs to be set for the contact resistance of each relay according to experiments or experiences, and the threshold range may be a threshold range for performing an alarm or a threshold range for performing an early warning. And when the resistance of the relay contact exceeds the threshold range, judging that the corresponding relay is abnormal, and thus carrying out early warning or alarm.
According to the relay state monitoring method for the railway signal circuit, provided by the embodiment of the invention, the relay contact resistance information is subjected to non-contact acquisition, then the contact resistance information is subjected to communication protocol conversion and uploading, and then fault judgment, fault early warning and fault warning are carried out according to the comparative analysis of the preset threshold value of the corresponding preset relay contact resistance, so that the centralized monitoring of all relays in the railway signal circuit is realized, on one hand, the occurrence of various relay contact faults can be early warned, on the other hand, the timely warning can be given when one relay contact is in fault, the timely processing and maintenance of the fault are ensured, and the influence on normal rail traffic caused by the abnormity of the railway signal circuit is avoided.
Further, the abnormal operation state of the relay may be caused not only by the failure of the relay contact but also by the abnormal operation voltage of the relay. Based on this, the relay state monitoring method in the above embodiment further needs to collect the working voltage data of each relay in the railway signal circuit. Specifically, the relay state monitoring method further includes:
s140, collecting working voltage information of each relay in a railway signal circuit;
the step is executed by a signal centralized monitoring system arranged in a station mechanical room, and the signal centralized monitoring system is responsible for collecting the working voltage of each relay so as to monitor in the mechanical room. The step is to output and utilize the working voltage information of each relay collected by the signal centralized monitoring system.
S150, carrying out communication protocol conversion and uploading on the working voltage information of the relay;
the relay working voltage information provided by the signal centralized monitoring system is transmitted to the station machine arranged in the mechanical chamber, and then the station machine is transmitted to the control room of the electric service section through the Ethernet. When the station machine transmits data, the station machine needs to perform data packaging and perform encapsulation according to a specific communication protocol.
And S160, comparing the relay working voltage information with a corresponding preset relay working voltage threshold range, and judging, early warning or alarming the working voltage fault of the corresponding relay when the relay working voltage information exceeds the corresponding preset relay working voltage threshold range.
It should be noted that, in the relay state monitoring method, the sequence of steps S140 to S160 and steps S110 to S130 is not limited, and the relay state monitoring method can monitor and feed back the contact resistance and the working voltage of the relay in the railway signal circuit at the same time.
In the method for monitoring the state of the relay in the railway signal circuit according to the embodiment, the historical working state of the relay can be reflected according to the data of the contact resistance and the working voltage of the relay in a period of time, and meanwhile, the change trend of the contact resistance and the working voltage can be reflected according to the data in the period of time. Based on this, an embodiment of the present invention further provides a method for monitoring a state of a relay of a railway signal circuit, fig. 4 is a flowchart of another method for monitoring a state of a relay of a railway signal circuit provided in an embodiment of the present invention, and referring to fig. 4, the method for monitoring a state of a relay includes:
s201, collecting temperature information of contact positions of relays in a railway signal circuit, and converting the temperature information into relay contact resistance information;
s202, carrying out communication protocol conversion and uploading on the relay contact resistance information;
s203, comparing the relay contact resistance information with a corresponding preset relay contact resistance threshold range, and when the relay contact resistance information exceeds the corresponding preset relay contact resistance threshold range, performing contact resistance fault judgment, fault early warning or fault warning of a corresponding relay;
s204, collecting working voltage information of each relay in the railway signal circuit;
s205, carrying out communication protocol conversion and uploading on the working voltage information of the relay;
s206, comparing the relay working voltage information with a corresponding preset relay working voltage threshold range, and when the relay working voltage information exceeds the corresponding preset relay working voltage threshold range, performing working voltage fault judgment, fault early warning or fault warning of a corresponding relay;
s207, recording relay contact resistance information and relay working voltage information, and forming a relay contact resistance time change curve and a relay working voltage time change curve;
s208, calculating the slopes of the relay contact resistance time change curve and the relay working voltage time change curve respectively, and comparing the slopes with corresponding preset slope thresholds;
s209, when the slope of the time change curve of the relay contact resistance exceeds a corresponding preset slope threshold, carrying out corresponding relay contact resistance fault early warning; when the slope of the time change curve of the working voltage of the relay exceeds a corresponding preset slope threshold, carrying out corresponding fault early warning on the working voltage of the relay;
s210, establishing a relay fault reason database;
and S211, judging the relay fault reason and suggesting fault maintenance according to the relay contact resistance information, the relay working voltage information and the relay fault reason database. According to the embodiment, the change trend of the contact resistance and the working voltage is reflected by recording the time change curve of the relay contact resistance or the time change curve of the working voltage, and whether the contact resistance and the working voltage are abnormally changed is judged according to whether the slope of the time change curve exceeds the preset range, so that the early warning of the fault can be realized according to the change trend of the contact resistance or the working voltage, and the abnormal working of a railway signal circuit caused by the fault of the relay is avoided. Further, when the contact resistance or the working voltage of each relay has a fault, in order to facilitate finding the fault cause, in the above embodiment, by presetting a fault cause database, a plurality of abnormal phenomena corresponding to the relay contact resistance fault and the relay working voltage fault are recorded in the fault cause database, and each abnormal phenomenon corresponds to a plurality of fault causes, so that when the contact resistance is abnormal or the relay working voltage is abnormal, the corresponding fault cause can be obtained by mapping, and a worker can be helped to find out the fault point in time. Here, the abnormal phenomenon of the contact resistance or the operating voltage is generally a numerical range of the contact resistance or the operating voltage, and the numerical range is outside a preset threshold range.
It should be noted that the setting of the fault cause in the fault cause database may be set by the expert of railway track traffic based on experience, and the priority of each corresponding fault cause may be set in the mapping relationship. For example, for the fault reason judgment when the relay working voltage is abnormal, the relay working voltage information can be used for matching with each working voltage abnormal phenomenon in the database, when the relay working voltage abnormal phenomenon 1 is matched, a plurality of fault reasons corresponding to the relay working voltage abnormal phenomenon 1 can be mapped, and meanwhile, fault maintenance suggestions can be added corresponding to the fault reasons.
Further, in the railway signal circuit as described above, since the contact resistance of the relay is likely to be deteriorated or surface-oxidized, the contact resistance is gradually increased as the use time is longer, and a contact failure is likely to occur, thereby causing an abnormality in the signal circuit. Based on this, on the basis of the above relay state monitoring method, the relay state monitoring method may further include:
s212, recording relay contact resistance information and forming a relay contact resistance time change curve;
and S213, predicting the service life of the corresponding relay according to the time change curve of the relay contact resistance, the current information of the relay contact resistance and a preset threshold range of the relay contact resistance.
On one hand, the method for monitoring the state of the relay of the railway signal circuit can analyze and judge the fault in real time and early warn and alarm the fault by acquiring the contact resistance and the working voltage of each relay of the railway signal circuit; the change trend monitoring can be carried out according to the historical data of the contact resistance and the working voltage so as to predict the abnormity of the contact resistance and the abnormity of the working voltage; in addition, the fault reason can be analyzed through a preset fault reason database, and a fault maintenance suggestion is given, so that the state early warning and alarming of the relay can be realized, and the normal operation of a railway signal circuit can be guaranteed.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (13)
1. A relay condition monitoring system for a railway signaling circuit, comprising:
the contact resistance data acquisition system comprises a plurality of infrared temperature measurement sensors, wherein the infrared temperature measurement sensors are arranged in relays in a railway signal circuit in a one-to-one correspondence manner, and the infrared temperature measurement sensors acquire temperature information of corresponding relay contact positions and convert the temperature information into relay contact resistance information;
the station machine is electrically connected with the plurality of infrared temperature measuring sensors respectively; the station machine is used for receiving the relay contact resistance information of the infrared temperature measurement sensor, and performing communication protocol conversion and uploading;
the data processing system is in communication connection with the station machine and receives the relay contact resistance information sent by the station machine;
and the data processing system compares the relay contact resistance information with a corresponding preset relay contact resistance threshold range, and when the relay contact resistance information exceeds the corresponding preset relay contact resistance threshold range, the data processing system performs contact resistance fault judgment, fault early warning or fault warning corresponding to the relay.
2. The relay status monitoring system of claim 1, wherein the railway signal circuit comprises a switch control circuit and a signal light control circuit;
the turnout control circuit at least comprises a turnout second starting and repeating relay, a turnout starting relay, a guiding general locking relay and a cutting-off relay;
the signal lamp control circuit comprises an outbound signal machine control circuit and an inbound signal machine control circuit; the control circuit of the outbound signal machine at least comprises a filament relay, a station track inspection relay, an auxiliary starting relay and a train starting relay; the station signal machine control circuit at least comprises a train signal relay, a train receiving locking relay, a turnout indication relay and a first locking relay.
3. The relay condition monitoring system of claim 2, wherein the railway signal circuit further comprises a track circuit;
the track circuit at least comprises a running direction changing relay, an approach forecasting relay, a transmission relay, an leaving relay, a track power failure repeating relay and a time relay.
4. The relay status monitoring system for a railway signaling circuit of claim 3, wherein the track circuit further comprises a binary two-position relay.
5. The relay status monitoring system of claim 1, further comprising a centralized signal monitoring system for collecting operating voltage information of the relay in the railway signal circuit;
the signal centralized monitoring system is electrically connected with the station machine, and the station machine is used for receiving the working voltage information of the relay of the signal centralized monitoring system and carrying out communication protocol conversion and uploading on the working voltage information of the relay;
the data processing system receives the relay working voltage information sent by the station machine;
and the data processing system compares the relay working voltage information with a corresponding preset relay working voltage threshold range, and when the relay working voltage information exceeds the corresponding preset relay working voltage threshold range, the data processing system carries out working voltage fault judgment, fault early warning or fault warning corresponding to the relay.
6. The relay status monitoring system of claim 5, wherein the data processing system is further configured to record the relay contact resistance information and the relay operating voltage information and form a relay contact resistance time variation curve and a relay operating voltage time variation curve;
the data processing system is also used for respectively calculating the slopes of the relay contact resistance time change curve and the relay working voltage time change curve and comparing the slopes with a corresponding preset slope threshold value;
when the slope of the time change curve of the relay contact resistance exceeds a corresponding preset slope threshold, carrying out corresponding relay contact resistance fault early warning; and when the slope of the time change curve of the working voltage of the relay exceeds a corresponding preset slope threshold, carrying out corresponding fault early warning on the working voltage of the relay.
7. The system of claim 5, wherein the data processing system is further configured to create a relay fault cause database and to make relay fault cause determinations and fault repair recommendations based on the relay contact resistance information and the relay operating voltage information and the relay fault cause database.
8. The relay status monitoring system for a railway signal circuit of claim 1, wherein the data processing system is further configured to record the relay contact resistance information and form a relay contact resistance time variation curve;
and the data processing system is also used for predicting the service life of the corresponding relay according to the time change curve of the relay contact resistance, the current relay contact resistance information and a preset relay contact resistance threshold range.
9. A method for monitoring the state of a relay of a railway signal circuit is characterized by comprising the following steps:
collecting temperature information of contact positions of relays in a railway signal circuit, and converting the temperature information into relay contact resistance information;
carrying out communication protocol conversion and uploading on the relay contact resistance information;
and comparing the relay contact resistance information with the corresponding preset relay contact resistance threshold range, and when the relay contact resistance information exceeds the corresponding preset relay contact resistance threshold range, performing contact resistance fault judgment, fault early warning or fault warning corresponding to the relay.
10. The method of monitoring the status of a railway signal circuit relay of claim 9, comprising:
collecting working voltage information of each relay in a railway signal circuit;
carrying out communication protocol conversion and uploading on the working voltage information of the relay;
and comparing the relay working voltage information with a corresponding preset relay working voltage threshold range, and when the relay working voltage information exceeds the corresponding preset relay working voltage threshold range, performing working voltage fault judgment, fault early warning or fault warning corresponding to the relay.
11. The method of monitoring the state of a relay in a railway signaling circuit of claim 10, comprising:
recording the relay contact resistance information and the relay working voltage information, and forming a relay contact resistance time variation curve and a relay working voltage time variation curve;
calculating the slopes of the relay contact resistance time change curve and the relay working voltage time change curve respectively, and comparing the slopes with a corresponding preset slope threshold;
when the slope of the time change curve of the relay contact resistance exceeds a corresponding preset slope threshold, carrying out corresponding relay contact resistance fault early warning; and when the slope of the time change curve of the working voltage of the relay exceeds a corresponding preset slope threshold, carrying out corresponding fault early warning on the working voltage of the relay.
12. The method of monitoring the status of a relay in a railway signaling circuit of claim 10, further comprising:
establishing a relay fault reason database;
and judging the relay fault reason and suggesting fault maintenance according to the relay contact resistance information, the relay working voltage information and the relay fault reason database.
13. The method of monitoring the status of a relay in a railway signaling circuit of claim 9, further comprising:
recording the relay contact resistance information and forming a relay contact resistance time variation curve;
and predicting the service life of the corresponding relay according to the time change curve of the relay contact resistance, the current relay contact resistance information and a preset relay contact resistance threshold range.
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