Signal current abnormality monitoring system and signal system

Abstract

The present application provides a signal current anomaly monitoring system and a signal system. The signal current anomaly monitoring system includes a lighting actuator, a lighting control processor, a current acquisition module, and a current calculation processor. The lighting actuator, the lighting control processor, the current acquisition module, and the current calculation processor are all provided on a fully electronic interlocking board. By integrating the signal current acquisition function into the fully electronic interlocking board, the fully electronic interlocking system automatically acquires and monitors the signal current in real time and issues precise alarms when an anomaly is detected. This eliminates the need for additional monitoring systems such as microcomputer monitoring equipment or alarms, thereby effectively simplifying the signal current monitoring system and significantly reducing the workload of data acquisition and wiring.

Description

Technical Field

[0001] The present application relates to the field of rail transit technology, and in particular to a signal current anomaly monitoring system and a signal system. Background Art

[0002] At present, LED signal lights are widely used in urban rail transit projects as ground light displays to direct vehicle operations.

[0003] The LED lighting current value is an important basis for judging the working status of the signal lighting unit. Currently, the signal current monitoring function is implemented by signal alarms and centralized monitoring systems, which have problems such as redundant equipment and heavy wiring and data collection workload. Summary of the Invention

[0004] In order to solve the above technical problems, the embodiments of the present application provide a signal current anomaly monitoring system and a signal system.

[0005] The embodiment of the present application provides a signal current anomaly monitoring system, comprising a lighting actuator, a lighting control processor, a current acquisition module, and a current calculation processor, wherein the lighting actuator, the lighting control processor, the current acquisition module, and the current calculation processor are all provided on a fully electronic interlocking board;

[0006] The lighting actuator is used to respond to the lighting instruction issued by the signal machine and output the lighting power to the lighting unit;

[0007] The lighting control processor is used to collect the lighting status information of the lighting unit and transmit it to the current calculation processor;

[0008] The current acquisition module is used to collect current information of the lighting circuit between the lighting actuator and the lighting unit, and transmit the current information to the current calculation processor;

[0009] The current calculation processor is used to perform calculations based on the lighting state information and the current information and output filament abnormality monitoring data.

[0010] In one embodiment, the lighting actuator, the lighting control processor, the current acquisition module and the current operation processor are arranged on the first safety acquisition module of the fully electronic interlocking board, and the signal current anomaly monitoring system also includes a second safety acquisition module arranged on the fully electronic interlocking board. The second safety acquisition module and the first safety acquisition module output the collected information through two-by-two-take-two logic; wherein the collected information includes one or more of current information, lighting status information and filament anomaly monitoring data.

[0011] In one embodiment, the lighting control processor uses a two-by-two-take-two architecture to collect and output lighting status information.

[0012] In one embodiment, the signal current abnormality monitoring system further includes a computer interlocking maintenance workstation;

[0013] The current calculation processor is further used to send the lighting state information and the current information to the computer interlocking maintenance workstation;

[0014] The computer interlocking maintenance workstation is used to perform filament abnormality detection on the lighting unit according to the lighting state information and the current information.

[0015] In one embodiment, the computer interlocking maintenance workstation is further used to:

[0016] When it is determined according to the lighting state information that the lighting unit is in the lighting state, judging according to the current information whether the lighting circuit current corresponding to the lighting unit exceeds a preset first current threshold range, and if so, outputting filament abnormality alarm information;

[0017] When the lighting unit is determined to be in the off state according to the lighting state information, whether the lighting circuit current corresponding to the lighting unit exceeds a preset second current threshold range is determined according to the current information, and if so, filament abnormality alarm information is output.

[0018] In one embodiment, the communication channel output by the current operation processor uses a standard CAN communication protocol for data transmission.

[0019] In one embodiment, the current acquisition module uses a current sensing device to collect current information through a through-core mutual inductance sampling method.

[0020] In one embodiment, the current acquisition module includes an analog-to-digital converter, which is used to convert the current analog information collected by the current sensing device into current digital information, and output the current digital information as the current information of the lighting circuit.

[0021] In one embodiment, the lighting actuator, the lighting unit, and the current sensing device are all plural, and there is a one-to-one correspondence between the lighting actuator, the lighting unit, and the current sensing device.

[0022] In one embodiment, the lighting actuator is an action relay integrated on the full electronic interlocking board.

[0023] An embodiment of the present application further provides a signal system, comprising a signal and any one of the signal current anomaly monitoring systems described above; the signal current anomaly monitoring system is used to monitor the current anomaly of the signal.

[0024] The signal machine current anomaly monitoring system provided in the embodiment of the present application integrates the signal machine current collection function into the fully electronic interlocking board. The fully electronic interlocking system automatically collects and monitors the signal machine current in real time, and accurately alarms when an anomaly is detected. There is no need to use additional monitoring systems such as microcomputer monitoring equipment or alarm instruments, thereby effectively simplifying the signal machine current monitoring system and greatly reducing the workload of collection and wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 This is one of the structural diagrams of the signal current anomaly monitoring system provided in an embodiment of the present application;

[0027] Figure 2 This is one of the schematic diagrams of the signal machine current collection and transmission principle provided in the embodiment of the present application;

[0028] Figure 3 This is the second schematic diagram of the signal current acquisition circuit principle provided by the embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of dual-system acquisition and inverted cutting provided by an embodiment of the present application;

[0030] Figure 5 This is a schematic diagram of the lighting current collection information flow (single system) provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0032] Please refer to Figure 1The embodiment of the present application provides a signal current anomaly monitoring system, comprising a lighting actuator, a lighting control processor, a current acquisition module, and a current calculation processor, wherein the lighting actuator, the lighting control processor, the current acquisition module, and the current calculation processor are all provided on a fully electronic interlocking board;

[0033] The lighting actuator is used to respond to the lighting instruction issued by the signal machine and output the lighting power to the lighting unit;

[0034] The lighting control processor is used to collect the lighting status information of the lighting unit and transmit it to the current calculation processor;

[0035] The current acquisition module is used to collect current information of the lighting circuit between the lighting actuator and the lighting unit, and transmit the current information to the current calculation processor;

[0036] The current calculation processor is used to perform calculations based on the lighting state information and the current information and output filament abnormality monitoring data.

[0037] In an embodiment of the present application, signal current collection and monitoring are implemented by a signal current anomaly monitoring system provided on a fully electronic interlocking board (also referred to as a signal board), which includes a lighting actuator, a lighting control processor, a current collection module and a current operation processor.

[0038] The lighting control processor is used to collect the lighting status information of the lighting unit and transmit it to the current calculation processor. The lighting status information can be collected by collecting the lighting switch status of the lighting actuator or by collecting the on / off status of the lighting unit. The current acquisition module can collect current information through direct or indirect acquisition methods. Direct acquisition methods use the voltage drop generated by current flowing through a resistor, such as using a multimeter or other instrument for measurement; indirect acquisition methods use the principle of mutual induction, such as using current sensing equipment for induction measurement.

[0039] After obtaining the current information and the lighting status information, the current calculation processor judges whether the current in the lighting and lighting-off states is within a preset range based on the lighting status information and the current information, so as to determine whether the filament is abnormal. If abnormal, an alarm signal is issued to realize abnormal monitoring and accurate alarm of the signal light.

[0040] This application integrates the signal machine current acquisition function into the fully electronic interlocking board, and the fully electronic interlocking system automatically collects and monitors the signal machine current in real time, and accurately alarms when an abnormality is detected. There is no need to use additional monitoring systems such as microcomputer monitoring equipment or alarm instruments, thereby effectively simplifying the signal machine current monitoring system and greatly reducing the workload of acquisition and wiring.

[0041] In one embodiment, the lighting actuator, the lighting control processor, the current acquisition module and the current operation processor are arranged on the first safety acquisition module of the full electronic interlocking board, and the signal current anomaly monitoring system also includes a second safety acquisition module arranged on the full electronic interlocking board, and the second safety acquisition module and the first safety acquisition module output the collected information through two-by-two-take-two logic; wherein, the collected information includes one or more of current information, lighting status information and filament anomaly monitoring data.

[0042] It should be noted that, to further improve the accuracy and reliability of information collection, the information collection system of the embodiment of the present application adopts a two-by-two-out-of-two architecture, namely, a two-by-two-out-of-two architecture formed by a first safety collection module and a second safety collection module. Corresponding to the first safety collection module, the second safety collection module also includes a lighting actuator, a lighting control processor, a current collection module, and a current calculation processor. Both the first and second safety collection modules have corresponding current information collection functions. To maintain the uniqueness of the collected information, the collected information is output externally by the primary system, while the backup system does not output the collected information.

[0043] The embodiment of the present application adopts a two-by-two-take-two architecture to collect and output current information, etc. Both the dual-system signal machine boards have the collection function, and the collection timing is synchronized with the main execution unit, further improving the accuracy and reliability of the signal machine current anomaly monitoring.

[0044] In one embodiment, the lighting control processor uses a two-by-two-take-two architecture to collect and output lighting status information.

[0045] Based on the above embodiments, in the safety acquisition module of the main / backup system, the lighting control processor adopts a two-by-two-take-two architecture to collect and output the lighting status information, thereby ensuring the accuracy and reliability of the lighting status information collection, and further improving the accuracy and reliability of the signal current abnormality monitoring.

[0046] In one embodiment, the signal current abnormality monitoring system further includes a computer interlocking maintenance workstation;

[0047] The current calculation processor is further used to send the lighting state information and the current information to the computer interlocking maintenance workstation;

[0048] The computer interlocking maintenance workstation is used to perform filament abnormality detection on the lighting unit according to the lighting state information and the current information.

[0049] In this embodiment of the present application, after receiving the lighting status information and current information, the current calculation processor can send them to the computer interlocking maintenance workstation, which then performs current calculations and determines if there is a filament abnormality alarm. Simultaneously, the computer interlocking maintenance workstation can also send the processed information to the maintenance support system (MSS), enabling full sharing of relevant information across the entire system.

[0050] The signal light current anomaly monitoring system provided in the embodiment of the present application performs anomaly monitoring and alarm on the collected current information and lighting status information through a computer interlocking maintenance workstation, thereby reducing the data budget pressure of the current operation processor, helping to further simplify the equipment configuration of the signal light current anomaly monitoring system, and facilitating the maintenance of the monitoring system.

[0051] In one embodiment, the computer interlocking maintenance workstation is further used to:

[0052] When it is determined according to the lighting state information that the lighting unit is in the lighting state, judging according to the current information whether the lighting circuit current corresponding to the lighting unit exceeds a preset first current threshold range, and if so, outputting filament abnormality alarm information;

[0053] When the lighting unit is determined to be in the off state according to the lighting state information, whether the lighting circuit current corresponding to the lighting unit exceeds a preset second current threshold range is determined according to the current information, and if so, filament abnormality alarm information is output.

[0054] In the embodiment of the present application, first, it is determined whether the lighting unit is in the lighting or off state based on the lighting state information, and then based on the different preset current ranges corresponding to the lighting or off state, it is determined whether the corresponding lighting circuit current exceeds the preset current range, thereby determining whether the filament is abnormal at this time. If an abnormality is detected, a filament abnormality alarm message is output.

[0055] The signal light current anomaly monitoring system provided in the embodiment of the present application performs anomaly monitoring and alarm on the collected current information and lighting status information through a computer interlocking maintenance workstation, and the computer interlocking maintenance workstation can flexibly configure the current alarm threshold value according to the signal light model to be applicable to all types of signal lights, effectively improving the compatibility and configuration flexibility of the signal light current anomaly monitoring system.

[0056] In one embodiment, the communication channel output by the current operation processor uses a standard CAN communication protocol for data transmission.

[0057] In an embodiment of the present application, the signal current anomaly monitoring system adopts a standard communication protocol to communicate data with the outside world, has the function of converting the data output by the current operation processor into data applied by the standard communication protocol, and outputs it to the outside through the CAN bus, effectively improving the data communication compatibility between the signal current anomaly monitoring system and the external system, and facilitating the realization of data sharing across the entire line and the entire system.

[0058] In one embodiment, the current acquisition module uses a current sensing device to collect current information through a through-core mutual inductance sampling method.

[0059] In the embodiments of the present application, the current acquisition module uses a current sensing device to collect current information through through-hole mutual inductance sampling. By using a current sensor to collect current changes in the signal's operating current, rather than directly collecting current, the module is completely isolated from the lighting circuit, thus preventing any impact on the normal operation of the signal. The signal current anomaly monitoring system provided in the embodiments of the present application not only monitors current anomalies but also ensures that the normal operation of the signal is not affected, thereby improving the reliability of signal operation and further enhancing the accuracy of current anomaly monitoring.

[0060] In one embodiment, the current acquisition module includes an analog-to-digital converter, which is used to convert the current analog information collected by the current sensing device into current digital information, and output the current digital information as the current information of the lighting circuit.

[0061] In an embodiment of the present application, when the current acquisition module collects the current of the lighting circuit, it can use an analog-to-digital converter to convert the current analog information into current digital information, so that the current operation processor with digital signal receiving and processing functions can be directly used to process the current information, reducing the computational requirements for the current operation processor and improving the feasibility of the current anomaly monitoring system.

[0062] In one embodiment, the lighting actuator, the lighting unit, and the current sensing device are all plural, and there is a one-to-one correspondence between the lighting actuator, the lighting unit, and the current sensing device.

[0063] In the embodiment of the present application, since a traffic light usually has more than one lighting unit, for example, a three-display traffic light includes three lighting units: yellow light, green light, and red light. Therefore, a corresponding number of lighting actuators and current sensing devices need to be set up. Each lighting actuator controls the lighting action of a lighting circuit respectively, and each current sensing device collects the current information of a lighting circuit respectively.

[0064] The signal light current anomaly monitoring system provided in the embodiment of the present application can control the lighting circuit and collect current separately by setting a corresponding number of lighting actuators and current sensing devices according to the number of lighting units. The current collection is refined to the light position, thereby further improving the accuracy and reliability of current anomaly monitoring.

[0065] In one embodiment, the lighting actuator is an action relay integrated on the full electronic interlocking board.

[0066] The signal current anomaly monitoring system provided in the embodiment of the present application further simplifies the equipment configuration of the signal current anomaly monitoring system by adopting a small relay integrated in the board as the lighting actuator.

[0067] Please combine Figures 2 to 5 Based on the above solution, in order to better understand the signal current abnormality monitoring system provided by the embodiment of the present application, the following examples are given:

[0068] 1. Signal machine current monitoring and transmission process Figure 2 As shown, this embodiment is described by taking a three-display signal light (yellow U, green L, and red H) as an example.

[0069] The signal machine power lines U, UH, L, LH, H, and HH are wired to the OC (safety system) cabinet through the trackside terminal box (HZ-12) and the distribution cabinet. The signal machine current is collected by the full electronic interlocking board (i.e., signal machine board) in the OC cabinet.

[0070] The signal board transmits current information via the standard CAN communication protocol to the CI (Computer Interlocking) maintenance workstation, which performs current calculations and determines filament breakage alarms. The CI maintenance workstation also sends the processed information to the Maintenance Support System (MSS) via the maintenance network, enabling full sharing of relevant information across the entire line.

[0071] 2. Selection of signal machine current monitoring and collection circuit and collection point, such as Figure 3 As shown (in order to reflect the acquisition principle, the signal lighting circuit is simplified in the figure):

[0072] 1) Signal machine current collection function:

[0073] Based on the principle of the three-display signal lighting circuit, the outgoing and return currents of the lighting unit are the same, and the data acquisition unit can monitor the return current. Sampling points are set at UH, LH, and HH, respectively, to collect the currents IU, IL, and IH of the yellow, green, and red lights, and the current collection can be refined to the light position.

[0074] 2) Alarm analysis function:

[0075] The interlocking device automatically determines the status of the signal lights. Based on the signal lighting current collected by function 1), it combines this with the status of the signal lights to determine whether an alarm should be issued. Alarms can be broken down to the light position.

[0076] 3. Double-system collection and inverted cutting, such as Figure 4 As shown;

[0077] OC is a safety system that uses a two-by-two architecture. Both its A and B systems are equipped with signal current collection capabilities. To maintain the uniqueness of the collected information, the active system outputs this information externally, while the standby system does not.

[0078] 4. Collection principles and equipment, such as Figure 5 As shown;

[0079] Current collection is implemented by the signal machine board. The components related to current collection in this board include the following parts (the collection principle of the dual-system board is the same, and the following embodiment only describes the single-system):

[0080] 1) Execution unit:

[0081] a. Lighting actuator, i.e. action relay (K1, K2, K3):

[0082] This type of relay is a small relay integrated into the board. K1 is used to turn on the power supply for U lamps, K2 is used to turn on the power supply for L lamps, and K3 is used to turn on the power supply for H lamps.

[0083] b. Lighting control processor (CPU);

[0084] This function determines the timing and status of signal lights. It uses a 2-out-of-2 architecture, involving CPU1 and CPU2. The two CPUs collect and compare information, then output it to CPU3 via a safety AND gate. This information includes the signal's On status, Off status, and the system's active / standby status (Pr / St).

[0085] 2) Collection unit

[0086] a. Current acquisition module

[0087] This module implements current acquisition in the lighting circuit. This module uses a current sensing device with a through-hole mutual inductance sampling method. Connecting it to the yellow light loop UH in the lighting circuit, it can acquire the output yellow light current IU. Simultaneously connecting it to the green light loop LH in the lighting circuit, it can acquire the output green light current IL. Simultaneously connecting it to the red light loop HH in the lighting circuit, it can acquire the output red light current IH.

[0088] The sampled current is an analog quantity and is sent to the ADC after processing.

[0089] b. Analog-to-digital converter (ADC)

[0090] The current analog information output by the current acquisition module is converted into digital information and sent to CPU3 after processing.

[0091] 3) Current computing processor (CPU)

[0092] CPU3 obtains the signal light status information of CPU1 and CPU2, combines it with the current information and processes it to generate current and alarm data. At the same time, it determines whether to output the collected data based on the main / backup information of the board.

[0093] As an example, the current calculation method is as follows:

[0094] According to the above current acquisition circuit, CPU3 uses the SPI bus to read the ADC. This reads the instantaneous voltage value sent by the current sensing device in the signal circuit to the ADC input via the op amp circuit. This instantaneous voltage is then converted into instantaneous current based on the circuit principle and the amplification factor. Current data is collected every 1ms and stored in a memory segment capable of storing 60 data points, ensuring that this memory segment always stores the instantaneous current data for the last 60ms (three power frequency cycles). Finally, when needed, the RMS value of the 60 instantaneous currents is calculated using the formula for effective value (RMS) (first sum of squares, then mean, and finally root-sum), yielding the effective value for the last 60ms. This algorithm yields the effective value of the signal circuit current.

[0095] According to the characteristics of the signal lighting unit, when the signal is on, the current value should be in the range of 80-150mA. If the collected current is lower than 80mA or higher than 150mA, it is considered that the filament is abnormal and the system alarms. When the signal is off, the current value should be in the range of 0-60mA. If the collected current is higher than 60mA, it is considered that the filament is abnormal and the system alarms.

[0096] The current collection and alarm data are sent to the communication output port via CPU3.

[0097] Different types of signal lights have different lighting currents. Different alarm thresholds can be set on the CI maintenance workstation based on the parameters of different lighting units to achieve accurate alarms. Furthermore, these thresholds can be adjusted in real time based on the operating conditions of the signal lights.

[0098] 4) Communication output port

[0099] It has the function of converting the data output by the current calculation CPU into data applied by standard communication protocol and outputting it to the outside through the CAN bus.

[0100] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0101] 1. The signal machine current is collected by the fully electronic interlocking system, which monitors in real time and gives accurate alarms. No microcomputer monitoring equipment or alarms are required.

[0102] 2. The current alarm threshold value can be flexibly configured according to the signal machine model and is applicable to all types of signal machines.

[0103] 3. Both signal machine boards have data collection function, and the collection timing is synchronized with the main execution unit.

[0104] 4. The collected information can be shared across the entire line and system through standard communication protocols.

[0105] On the other hand, an embodiment of the present application further provides a signal system, comprising a signal and any one of the signal current anomaly monitoring systems described above; the signal current anomaly monitoring system is used to monitor the current anomaly of the signal.

[0106] The signal system provided in the embodiment of the present application utilizes a signal current anomaly monitoring system provided on a fully electronic interlocking board. By integrating the signal current acquisition function into the fully electronic interlocking board, the fully electronic interlocking system automatically acquires and monitors the signal current in real time, and accurately alarms when an anomaly is detected. There is no need to use additional monitoring systems such as microcomputer monitoring equipment or alarm instruments, thereby effectively simplifying the signal current monitoring system and greatly reducing the workload of acquisition and wiring.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A signal current abnormality monitoring system, characterized in that: It includes a lighting actuator, a lighting control processor, a current acquisition module and a current calculation processor, wherein the lighting actuator, the lighting control processor, the current acquisition module and the current calculation processor are all arranged on a fully electronic interlocking board; The lighting actuator is used to respond to the lighting instruction issued by the signal machine and output the lighting power to the lighting unit; The lighting control processor is used to collect the lighting status information of the lighting unit and transmit it to the current calculation processor; The current acquisition module is used to collect current information of the lighting circuit between the lighting actuator and the lighting unit, and transmit the current information to the current calculation processor; The current calculation processor is used to perform calculations based on the lighting state information and the current information and output filament abnormality monitoring data; The lighting actuator, the lighting control processor, the current acquisition module, and the current calculation processor are provided on a first safety acquisition module of the fully electronic interlocking board, and the signal current anomaly monitoring system further includes a second safety acquisition module provided on the fully electronic interlocking board. The second safety acquisition module and the first safety acquisition module output collected information through a two-by-two-take-two logic; wherein the collected information includes one or more of current information, lighting status information, and filament anomaly monitoring data; The lighting control processor uses a two-by-two-take-two architecture to collect and output lighting status information.

2. The signal current abnormality monitoring system according to claim 1, characterized in that: Also included is a computer interlock maintenance workstation; The current calculation processor is further used to send the lighting state information and the current information to the computer interlocking maintenance workstation; The computer interlocking maintenance workstation is used to perform filament abnormality detection on the lighting unit according to the lighting state information and the current information.

3. The signal current abnormality monitoring system according to claim 2, characterized in that: The computer interlocking maintenance workstation is further used for: When it is determined according to the lighting state information that the lighting unit is in the lighting state, judging according to the current information whether the lighting circuit current corresponding to the lighting unit exceeds a preset first current threshold range, and if so, outputting filament abnormality alarm information; When it is determined that the lighting unit is in the off state according to the lighting state information, it is determined according to the current information whether the lighting circuit current corresponding to the lighting unit exceeds a preset second current threshold range, and if so, a filament abnormality alarm message is output.

4. The signal current abnormality monitoring system according to claim 2, characterized in that: The communication channel output by the current operation processor adopts the standard CAN communication protocol for data transmission.

5. The signal current abnormality monitoring system according to claim 1, characterized in that: The current acquisition module uses a current sensing device to collect current information through a through-core mutual inductance sampling method.

6. The signal current abnormality monitoring system according to claim 5, characterized in that: The current acquisition module includes an analog-to-digital converter, which is used to convert the current analog information collected by the current sensing device into current digital information, and output the current digital information as the current information of the lighting circuit.

7. The signal current abnormality monitoring system according to claim 5, characterized in that: There are multiple lighting actuators, lighting units, and current sensing devices, and there is a one-to-one correspondence between the lighting actuators, lighting units, and current sensing devices.

8. A signal system, characterized in that: It comprises a signal and a signal current anomaly monitoring system according to any one of claims 1 to 7; the signal current anomaly monitoring system is used to monitor the current anomaly of the signal.

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