JP7406925B2 - Equipment monitoring device - Google Patents

Description

The present invention relates to a monitoring device that can be used as a monitoring device for various types of equipment including railway equipment.

Various causes can be considered for the occurrence of malfunctions in various equipment in railways, etc., and in order to deal with this, for example, as exemplified in Patent Document 1, a maintenance system for railway signal equipment with track circuits has been developed. It is known that maintenance is performed according to the cause by categorizing the state of decline in track circuit signals and making correspondences for each type.

However, since the causes of failures include, for example, interactions among the parts that make up the equipment, the technology exemplified in Patent Document 1 alone cannot identify failure points in various equipment or detect signs of malfunctions. It is not always possible to make appropriate decisions.

In addition, considering that the interaction of each component has an effect on the occurrence of failures, for example, it is possible to monitor changes in the voltage and current values measured for each component individually and check whether there is a large change. Even if it is detected, it does not necessarily mean that there is an abnormality in the area. In other words, even if there is a large change, it does not necessarily mean that there is a failure or malfunction at that location, so it is not possible to identify the location of the abnormality in the equipment just by measuring various numerical values.

Japanese Patent Application Publication No. 2011-143779

The present invention has been made in view of the above-mentioned points, and is capable of detecting failure locations or locations with signs of failure in equipment with a simple configuration, especially in cases where detection is impossible by data measurement alone. The objective is to provide a monitoring device for equipment that

The equipment monitoring device to achieve the above purpose includes a calculation unit that calculates the electrical characteristic constants of the equipment based on measurement data about the equipment that makes up the equipment, and and a determination unit that determines the status of each component.

In the equipment monitoring device described above, the arithmetic unit calculates the electrical characteristic constants of the equipment based on measurement data about the equipment, and the judgment unit determines the status of each part of the equipment based on the calculated results. As a result, for example, the status of each part, such as the presence or absence of a failure or malfunction, which cannot be grasped by simply measuring various data such as voltage values and current values in each part of the equipment and capturing changes in the measured data, can be obtained. It becomes possible to make decisions based on the interactions between the devices that make up the equipment, and it also becomes possible to identify the location where a malfunction occurs in the equipment and to detect signs of the occurrence of a malfunction.

In a specific aspect of the present invention, the determination unit identifies at least one of a failure location in the equipment and detects a sign of a malfunction for each part constituting the equipment, based on the calculation result of the calculation unit. In this case, it is possible to appropriately identify the location of failure in the equipment and detect signs of failure.

In another aspect of the present invention, the electrical characteristic constant calculated in the calculation unit includes at least one of resistance value, capacitance, and impedance. In this case, criteria can be created depending on the monitoring target.

In yet another aspect of the present invention, the device includes a four-terminal network equivalent circuit, and the arithmetic unit calculates electrical characteristic constants by performing inverse calculations from voltage and current values as measurement data regarding the four-terminal equivalent circuit. In this case, electrical characteristic constants can be calculated based on actually measured values by inverse calculations from the voltage and current values, making it possible to accurately judge the situation.

In yet another aspect of the present invention, the determination unit compares the electrical characteristic constant calculated by the calculation unit with a threshold value determined depending on the installation environment of the equipment, and determines the status of each part constituting the equipment. In this case, the determination can be made based on comparison with an appropriate threshold value depending on the situation.

In yet another aspect of the invention, the equipment includes components of a track circuit. In this case, regarding the track circuit, it becomes possible to identify the location where a malfunction or the like occurs and to detect a sign of the occurrence of a malfunction.

In yet another aspect of the invention, the device includes an impedance bond component. In this case, it becomes possible to specify the location where a malfunction or the like occurs and to detect a sign of the occurrence of a malfunction with respect to the impedance bond.

In yet another aspect of the invention, the equipment includes a component of a railroad crossing or switch. In this case, it becomes possible to identify the location where a malfunction has occurred and to detect a sign of a malfunction at a level crossing or a switch.

Still another aspect of the present invention includes a communication unit that transmits measurement data or electrical characteristic constants to a central device that performs overall management of the equipment. In this case, the central device can centrally manage the occurrence of equipment malfunctions and their signs.

FIG. 1 is a conceptual diagram for explaining an example of an equipment monitoring system including an equipment monitoring device according to an embodiment. FIG. 2 is a block diagram showing a configuration example of a monitoring device related to a track circuit. FIG. 3 is a functional block diagram for explaining an example of processing operations in the monitoring device. (A) is a conceptual diagram showing a configuration example of a monitoring device related to a railroad crossing, and (B) is a block diagram. (A) is a conceptual diagram showing a configuration example of a monitoring device related to a switch, and (B) is a block diagram.

Hereinafter, with reference to FIG. 1 and the like, an equipment monitoring system including a monitoring device for monitoring equipment such as a switch, a track circuit, and a level crossing device according to an embodiment will be described.

As illustrated in FIG. 1, an equipment monitoring system 500 including a monitoring device MO for various equipment according to the present embodiment includes a switch TM, a track circuit TC, and a level crossing device (level crossing) provided along a track RL in a railway. This is a system for determining, for example, the presence or absence of an abnormality in each equipment, the possibility of an abnormality occurring, etc. by monitoring various equipment EQ such as RC using a monitoring device MO. In the illustrated example, the train TT is running on the track RL in the direction of arrow A1. Each equipment EQ operates according to the running of the train TT, and a monitoring device MO provided corresponding to each equipment EQ performs monitoring according to the characteristics of the equipment EQ.

In order to cope with the above, the equipment monitoring system 500 is installed in association with each equipment EQ installed at the site, and is used to determine the status of each equipment (component) that constitutes the equipment EQ. It includes a monitoring device MO that performs various processes such as acquisition of measurement data and calculations based on the data, and a command unit 100 that manages and controls various data, calculation results, etc. acquired by each monitoring device MO placed at the site. The command unit 100 includes a central unit 110 that includes a display unit and performs overall management of the equipment, and receives various data from the monitoring device MO through wireless communication or wired communication using a direct line, network line, etc. Performs comprehensive management (management control) for all sections of the route monitored by the monitoring system 500.

In addition, in this embodiment, the equipment EQ such as the switch TM, track circuit TC, and level crossing device RC that are monitored in the equipment monitoring system 500 may be referred to as equipment EQ including the monitoring device MO, but the monitoring Only the parts other than the equipment MO may be referred to as equipment EQ.

Furthermore, in the present embodiment, each monitoring device MO not only simply acquires measurement data for each device constituting the installed equipment EQ, but also measures the equipment based on the acquired measurement data. Electrical characteristic constants are calculated, and based on the calculated electric characteristic constants, judgments are made regarding the status of each part of the equipment. This makes it possible to make decisions based on the interactions among the devices that make up the equipment EQ, which in turn makes it possible to identify the location of malfunctions in equipment and detect signs of malfunctions occurring. .

Hereinafter, with reference to the block diagram of FIG. 2, an example of the configuration of the monitoring device MO and an example of the monitoring operation for the equipment EQ will be described. FIG. 2 shows, as an example of the equipment EQ, a monitoring device MO that monitors the track circuit TC and the impedance bond IB provided around the track circuit TC.

As described above, the monitoring device MO acquires data regarding various operations in order to monitor the presence or absence of abnormalities in each equipment EQ. In the following description, such data will be referred to as measurement data MD. That is, the monitoring device MO is a device that acquires the measurement data MD and further performs various calculation processes regarding the measurement data MD. Among the plurality of monitoring devices MO shown in FIG. 2, for example, if the monitoring device MOt is for monitoring the transmitter Tx that constitutes the track circuit TC as the equipment EQ, the transmitter Tx that is the main body of the equipment EQ is configured. The voltage and current values of each transformer TR and resistor RE are measured for each device, and the electrical characteristic constants of the device are calculated based on the measured data (measurement data) MD. Furthermore, the monitoring device MOt is based on the electrical characteristic constants calculated for each device such as the transformer TR as described above, that is, based on the actual measured values in the current operation, not the electrical characteristic constants in the standard (specifications). The status of each part making up the transmitting part Tx is determined by taking into account the obtained electrical characteristic constants of each part, the operational interaction of the devices making up the transmitting part Tx, and the external environment.

Similarly, among the plurality of monitoring devices MO, a monitoring device MOr for monitoring the receiving section Rx constituting the track circuit TC is also installed for each transformer TR and resistor RE that are devices (components) constituting the receiving section Rx. The voltage applied to these and the voltage value and current value of the flowing current are acquired as measurement data MD, and various calculations and judgments are performed.

In addition to the track circuit TC, for example, as shown in the figure, the monitoring device MOb monitors the impedance bond IB as the equipment EQ to be monitored.

An example of the internal configuration of the monitoring device MO will be described below. Note that in the illustrated example, details are shown for the monitoring device MOb, but since the other monitoring devices MO are the same, illustration and explanation are omitted.

As illustrated, the monitoring device MO (MOb) includes a data reception section 11, a storage section 12, a communication section 13, a sensor 14, and a main control section MC that centrally controls these.

The data reception unit 11 is an interface (IF) provided in the monitoring device MO to receive input of data regarding various operations related to the equipment EQ. For example, in the case of the track circuit TC, which is an example of equipment EQ, each part that constitutes it, or impedance bond IB, the current flowing and the voltage applied to the equipment that constitutes these, such as transformers, coils, or capacitors, etc. The results of measuring various data are accepted as measurement data MD.

The storage unit 12 is composed of a storage device, etc., and stores measurement data MD acquired through the data reception unit 11 as described above, as well as various data required in the calculation processing described later, under the management of the main control unit MC. Store it below. For example, in the case of data regarding impedance bond IB, values necessary for calculating electrical characteristic constants such as the number of turns (ratio of the number of turns) of a transformer are stored. Moreover, if the data is related to the track circuit TC, the length of the rail RL in the target track OB, etc. are stored. Further, the storage unit 12 stores various programs for arithmetic processing, and can be read as appropriate by the main control unit MC.

The communication unit 13 includes a device for communicating with the command unit 100. In the illustrated example, the communication unit 13 is configured to communicate with the command unit 100 by wireless communication, but the communication unit 13 is not limited to this, and transmission can be performed in various ways. The monitoring device MO notifies the command unit 100 via the communication unit 13 of various data acquired by the monitoring device MO, as well as results calculated by the monitoring device MO, judgment results based on the calculation results, and the like.

The sensor 14 is capable of acquiring various data regarding the installation environment of the monitoring device MO and the equipment EQ to be monitored. The sensor 14 is an external environment acquisition sensor that includes, for example, a thermometer, a hygrometer, a sunlight meter, etc., and is capable of acquiring environmental data RD as data regarding various external environments such as weather, temperature, and humidity. The monitoring device MO performs various judgments based on the calculated value of the measurement data MD obtained from the data reception unit 11 and the environmental data RD obtained from the sensor 14.

The main control unit MC is composed of a CPU, etc., and controls the operation of the entire monitoring device MO including the above-mentioned units, as well as performs various calculation processes. In particular, here, the main control unit MC includes a calculation unit CL that calculates electrical characteristic constants of equipment (components) constituting the equipment EQ based on measurement data MD of the equipment, and an electric power calculated by the calculation unit CL. It has a judgment unit JD that judges the status of each part constituting the equipment EQ based on characteristic constants. In other words, the main control unit MC reads appropriate programs and data stored in the storage unit 12 as necessary, and in some cases calculates electrical characteristic constants of the corresponding equipment based on the measurement data MD. In other cases, it functions as a judgment section JD that makes various judgments based on the calculation results of electrical characteristic constants and environmental data RD.

となる。つまり、
Ｖ_３＝２０×Ｖ_１…（１ａ）
Ｉ_３＝Ｖ_１／（２０×Ｚ）＋Ｉ_１／２０…（１ｂ）
であり、実効値としての電気特性定数である励磁インピーダンスＺは、上式（１）あるいは（１ａ）及び（１ｂ）から、

となる。このような実測値に基づく電気特性定数を、各機器において算出する。言い換えると、この場合、演算部ＣＬは、４端子等価回路に関する測定データＭＤとしての電圧値及び電流値から逆演算して電気特性定数を求めている。なお、電気特性定数については、対象となる構成部品により種々異なり、上記のようなインピーダンスのほか、例えば抵抗値やコンデンサ容量、リアクタンス等が、算出すべき電気特性定数となる。 Hereinafter, an example of calculation of electrical characteristic constants of equipment constituting equipment EQ and judgment based on the calculation results will be described with reference to a conceptual diagram surrounded by a broken line X1 in FIG. 2. Here, as various circuits included in the equipment EQ, those expressed as a 4-terminal network equivalent circuit (i.e., a 4-terminal network or a 2-terminal pair network) are exemplified for the transmitting coil as a device constituting the impedance bond IB. are doing. In this case, the current value I ₁ and voltage value V ₁ on the output side and the current value I ₃ and voltage value V ₃ on the input side are measured (actually measured). Also, if the ratio of the number of turns of the coil is 1:20, and the excitation impedance as an electrical characteristic constant as an effective value to be determined is Z, then from the basic equation,

becomes. In other words,
V ₃ =20×V ₁ ...(1a)
I ₃ =V ₁ /(20×Z)+I ₁ /20...(1b)
From the above formula (1) or (1a) and (1b), the excitation impedance Z, which is an electrical characteristic constant as an effective value, is

becomes. Electrical characteristic constants based on such actually measured values are calculated for each device. In other words, in this case, the calculation unit CL calculates the electrical characteristic constants by performing inverse calculations from the voltage and current values as the measurement data MD regarding the four-terminal equivalent circuit. Note that the electrical characteristic constants vary depending on the target component, and in addition to the above-mentioned impedance, the electrical characteristic constants to be calculated include, for example, resistance, capacitance, reactance, and the like.

Next, the main control unit MC as the determination unit JD determines the status of each part from each electrical characteristic constant calculated for each device. For this reason, the main control unit MC determines the threshold value regarding each electrical characteristic constant based on the environmental data RD etc. acquired by the sensor 14. For example, even if the electrical characteristic constants are the same, the allowable numerical range etc. differs depending on the temperature, humidity, season, etc. Furthermore, it varies depending on the length of the target track in the track circuit, the characteristics of the materials used for the equipment, deterioration over time, etc. Therefore, in the present embodiment, the threshold value for determination is determined by taking into consideration the characteristics related to the attributes of the equipment stored in advance in the storage unit 12 and the equipment constituting the equipment, and the external environment.

As described above, the main control unit MC as the judgment unit JD converts each electrical characteristic constant regarding the component parts calculated by the above calculation processing in the calculation unit CL to a threshold value determined according to the installation environment of the equipment EQ, etc. The situation of each part that makes up the equipment EQ is judged by comparing it with the equipment EQ. That is, the determination unit JD identifies a failure location in the equipment EQ and detects a sign of a malfunction for each part that constitutes the equipment EQ, based on the calculation result of the calculation unit CL.

In this case, by considering the threshold values for each electrical characteristic constant regarding each component, it becomes possible to make a determination that takes into account various influences, interactions between devices, and the like. For example, if the electrical characteristic constant of one component shows an abnormal value that exceeds the threshold range, the component itself that has the abnormal value will fail due to the relationship with the electrical characteristic constants of other components. This makes it possible to make judgments based on mutual relationships, such as whether there is an abnormality (or there is a sign of it), or whether abnormal values have occurred in that component due to the influence of an abnormality in another component. This makes it possible to identify abnormal locations.

Hereinafter, a series of processing operations related to determination in the above-mentioned monitoring device MO will be described with reference to the functional block diagram of FIG. 3.

First, as a prerequisite for monitoring, create a unique 4-terminal network equivalent circuit for each equipment used for equipment EQ, and determine the method of calculating each electrical characteristic constant by inverse calculation as described above ( Step S101).

Next, the main control unit MC, as the calculation unit CL, receives input of measurement data MD obtained through actual measurements during monitoring (step S201), performs inverse calculation processing of the basic equation based on the measurement data MD (step S102), Electrical characteristic constants for each device are calculated by the inverse calculation (step S103).

Thereafter, the main control unit MC, as a judgment unit JD, receives input of environmental data RD from the sensor 14 (step S301), reads out various necessary data from the storage unit 12, and determines the threshold value for each electrical characteristic constant. Based on the comparison between each electrical characteristic constant and the threshold value, various determination processes are performed (step S104). That is, the determination unit JD compares the electrical characteristic constant calculated by the calculation unit CL with a threshold value determined according to the installation environment of the equipment EQ, and determines the status of each part constituting the equipment EQ.

As described above, the equipment EQ monitoring device MO according to the present embodiment includes the calculation unit CL that calculates the electrical characteristic constant of the equipment based on the measurement data MD about the equipment (component parts) constituting the equipment EQ, and the and a judgment section JD that judges the status of each section constituting the equipment EQ based on the electrical characteristic constants calculated by the section CL. That is, in the equipment monitoring device MO, the calculation unit CL calculates the electrical characteristic constants of the equipment based on the measurement data MD about the equipment, and based on the calculated results, the judgment unit JD determines the status of each part constituting the equipment EQ. I am making a judgment about As a result, for example, the status of each part, such as the presence or absence of a failure or malfunction, which cannot be grasped by simply measuring various data such as voltage values and current values in each part of the equipment EQ and capturing changes in the measured data, can be obtained. It becomes possible to make judgments based on the interactions among the devices that make up the equipment EQ, which in turn makes it possible to identify the location where a malfunction or the like occurs in the equipment and to detect signs of the occurrence of a malfunction.

Hereinafter, a configuration example of a monitoring device for other equipment will be described with reference to FIGS. 4 and 5. In addition, FIG. 4(A) is a conceptual diagram showing a configuration example of a monitoring device MO regarding a level crossing device (level crossing) RC as an example of other equipment EQ, and FIG. FIG. 2 is a block diagram of an example of FIG.

Further, FIG. 5(A) is a conceptual diagram showing a configuration example of a monitoring device MO regarding a switch TM as another example of other equipment EQ, and FIG. 5(B) is an example of the configuration of FIG. 5(A). FIG.

Note that the configuration of the monitoring device MO in FIGS. 4(B) and 5(B) is the same as that described above, so a detailed explanation will be omitted, but the measurement data MD to be acquired and the environment The data RD or the content of the calculation process varies depending on the characteristics of the equipment EQ to be monitored, such as the level crossing device RC and the switch TM, as well as the equipment (components) that make up these devices.

Hereinafter, the involvement of the monitoring device MO regarding the level crossing device RC as an example of the equipment EQ shown in FIGS. 4(A) and 4(B) will be described. As shown in the figure, the monitoring device MO is connected to a pair of gates GA1 and GA2 that constitute the level crossing device RC to be monitored, and measures the components of the level crossing device RC, that is, the devices that make up the switch TM. Data MD can be obtained.

In this case, for example, monitoring by the monitoring device MO in the level crossing device RC, which is an example of the equipment EQ, may involve monitoring the lifting and lowering operations of a pair of barrier gates GA1 and GA2 that constitute the level crossing device RC. In this example, in FIG. 4(B), measurement data MD is acquired from drive circuits MD1 and MD2 for driving circuit breaker motors MA1 and MA2, which are devices configuring each circuit breaker GA1 and GA2. It shows how it is done. In addition to the above, various data may be input to the monitoring device MO, for example, in order to record data during the operation of a warning device or a lighting display of an arrow indicating the direction of travel of a running train (for example, see train TT in Figure 1). The electrical characteristic constants of these devices may also be calculated by calculation.

Hereinafter, the involvement of the monitoring device MO regarding the switch TM as an example of the equipment EQ shown in FIGS. 5(A) and 5(B) will be described. As shown in the figure, the monitoring device MO is connected to the switch TM to be monitored, and is capable of acquiring measurement data MD regarding the components of the switch TM, that is, the devices constituting the switch TM.

In this case, for example, monitoring by the monitoring device MO in the switch TM as an example of the equipment EQ may include monitoring the moving operation of the rail RL (see FIG. 1). The switch TM is, for example, an electric switch, and is a member that switches the course of a train at the turnout by moving the tongue rail among the basic rails and tongue rails on the sleepers that constitute the turnout. Although detailed illustration of the switching operation described above is omitted, in order to perform the switching operation, the switch TM operates the switching motor CM as a power source illustrated in FIG. 5(B). The illustrated example shows how the measurement data MD is acquired from the drive circuit CD for driving the switching motor CM constituting the switch TM. In addition to the above, for example, the switch TM is equipped with an operating pipe extending from the main body, a connecting part connected to the operating pipe and connected to the tongue rail, or a locking pipe for fixing the position after the switching operation, etc. In order to record data during operation of each part constituting the switch TM, various data may be input to the monitoring device MO, and electrical characteristic constants may be calculated for these as well by calculation. .

As described above, according to the monitoring device MO according to the present embodiment, it is possible to accurately judge failures, etc. not only in the track circuit TC but also in the level crossing device (level crossing) RC and the switch TM with a simple configuration. Can be done.

〔others〕
This invention is not limited to the embodiments described above, and can be implemented in various ways without departing from the spirit thereof.

First, in the above description, the equipment EQ installed along the railway line for which operation records are to be acquired is a switch, a track circuit, and a level crossing device, but the equipment EQ is not limited to this, and various types of equipment can be monitored.

Furthermore, the monitoring device having the configuration according to the present application can be applied to various types of equipment, not only those related to railways, to be monitored. It is particularly applicable to equipment installed outdoors that is greatly affected by the external environment, equipment that operates for long periods of time such as 24-hour operation, or equipment that requires a quick response to the occurrence or sign of failure.

Furthermore, in the above, each monitoring device MO performs everything from measurement to calculation and judgment, and the obtained results are communicated between the command unit 100 (or central device 110) and each monitoring device MO. However, the configuration may be such that the monitoring is completed by each monitoring device MO and does not include a communication section. Conversely, the central device 110 may be responsible for part of the functions of the monitoring device MO installed at the site. For example, the measurement data MD acquired at the site may be transmitted to the central device 110 by the communication unit 13, and various calculation processes etc. may be performed centrally in the central device 110. In this case, the on-site device and the central device 110 work together to function as a monitoring device. Alternatively, integrated monitoring may be achieved through cooperation between a plurality of monitoring devices MO installed at the site and the central device 110. For example, regarding the track circuit TC in FIG. 2, a monitoring device MO is provided for each of the transmitter Tx and the receiver Rx that constitute the track circuit TC. In the track circuit TC, one track OB may be very long (for example, about 1 km) depending on the case, and the transmitter Tx and the receiver Rx may be separated from each other by a large distance. In such a case, as illustrated in FIG. 2, it is conceivable to provide a monitoring device MO, each of which sends data to the central device 110. In this case, each monitoring device MO may make a judgment based on the calculation results, but instead of this, or in addition to this, the central device 110 uses information on the transmitter Tx side and information on the receiver Rx side. The situation of the entire track circuit TC may be grasped based on the above.

Further, all processes in each device, including communication between the monitoring device MO and the central device 110, may be automated for monitoring.

Further, for example, with respect to threshold settings, by providing a criterion for determining failure occurrence and a criterion for determining failure signs, it is possible to create a configuration in which not only failure occurrence but also prior prediction before failure occurrence can be made.

Furthermore, in the above, various settings can be made regarding the range of measurement data MD targeted by the monitoring device MO. As for the range of measurement data MD, as a typical example, it is conceivable that all data related to measurable four-terminal equivalent circuits are targeted. For example, in FIG. 2, two transformers TR and one resistor RE are shown as devices constituting the transmitter Tx constituting the track circuit TC, and the corresponding monitoring device MOt is capable of monitoring all of these devices. Conceivable. In this case, it is possible to more reliably determine the status of the equipment constituting the equipment EQ (track circuit TC or transmitter Tx) to be monitored. On the other hand, it may be empirically known that some devices rarely experience failures or have almost no interaction with other devices. Therefore, for example, these items may be excluded in advance from the monitoring targets by the monitoring device MO. That is, the devices to be monitored and the locations to be monitored may be limited. For example, in FIG. 2, if the transformer TR that constitutes the transmitting section Tx and the receiving section Rx is of a type that rarely causes failures, it is not monitored from the beginning, and the transmitting section Tx is solely monitored by monitoring other devices. It is also possible to check for problems in the receiving unit Rx or the like.

DESCRIPTION OF SYMBOLS 11...Data reception part, 12...Storage part, 13...Communication part, 14...Sensor, 100...Command part, 110...Central device, 500...Equipment monitoring system, A1...Arrow, CD...Drive circuit, CL...Calculation part, CM...conversion motor, EQ...equipment, GA1, GA2...breaker, I1, I3...current value, IB...impedance bond, JD...judgment unit, MA1, MA2...breaker motor, MC...main control unit, MD ...Measurement data, MD1, MD2...Drive circuit, MO, MOb, MOr, MOt...Monitoring device, OB...Track, RC...Level crossing device, RD...Environmental data, RE...Resistance, RL...Railway, RL...Rail, Rx... Receiving section, TC...Track circuit, TM...Switch, TR...Transformer, TT...Train, Tx...Transmitting section, V1, V3...Voltage value, X1...Dotted line, Z...Excitation impedance

Claims (8)

a calculation unit that calculates electrical characteristic constants of the equipment based on measurement data about the equipment that constitutes the equipment;
a determination unit that determines the status of each part constituting the equipment based on the electrical characteristic constant calculated by the calculation unit,
The calculation unit calculates the electrical characteristic constant by performing inverse calculations from the voltage value and current value on the input side as the measurement data regarding the four-terminal equivalent circuit included in the device , and the voltage value and current value on the output side. ,
Equipment monitoring device. 2. The equipment according to claim 1, wherein the determination unit performs at least one of identifying a failure point in the equipment and detecting a sign of a malfunction for each part constituting the equipment, based on the calculation result of the calculation unit. Monitoring equipment. 3. The equipment monitoring device according to claim 1, wherein the electrical characteristic constant calculated by the calculation unit includes at least one of a resistance value, a capacitor capacity, and an impedance. Any one of claims 1 to 3, wherein the determination unit compares the electrical characteristic constant calculated by the calculation unit with a threshold value determined according to the installation environment of the equipment to determine the status of each part constituting the equipment. A monitoring device for the equipment described in item (1). The equipment monitoring device according to any one of claims 1 to 4, wherein the equipment includes a component of a track circuit. The equipment monitoring device according to any one of claims 1 to 4, wherein the equipment includes an impedance bond component. The equipment monitoring device according to any one of claims 1 to 4, wherein the equipment includes a component of a railroad crossing or a switch. The equipment monitoring device according to any one of claims 1 to 7, further comprising a communication unit that transmits the measurement data or the electrical characteristic constant to a central device that performs overall management of the equipment.

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