Arcing detection device

Abstract

The utility model relates to an arcing detection device which is characterized in that an ultraviolet sensor is closed through forward pulse voltage output by a pulse power supply and ultraviolet rays emitted by arcing between a current collector and a power supply rail, so that a closed loop is formed among the pulse power supply, the ultraviolet sensor and a first resistor; then the voltage acquisition module acquires the voltage values at the two ends of the first resistor, and the processing module determines whether arcing occurs between the current collector and the power supply rail according to the voltage values, so that whether arcing occurs between the current collector and the power supply rail can be detected in real time in the running process of the rail transit vehicle; reliability and accuracy of detection results can be effectively guaranteed, and normal power receiving and operation of rail transit vehicles can be effectively guaranteed.

Description

Technical Field

[0001] The present application belongs to the field of rail transit technology, and in particular, relates to an arc detection device. Background Art

[0002] During the operation of the rail transit vehicle, the current collector on the rail transit vehicle contacts the power supply rail, and the electric energy of the power supply rail is transmitted to the rail transit vehicle through the current collector to supply power to the rail transit vehicle.

[0003] Since the contact between the current collector and the power supply rail is a dynamic process, there are unevenness at the joints of the power supply rail, which can easily cause the power supply rail to separate from the current collector. When the power supply rail is separated from the current collector, arcing will occur between the two. Since arcing will emit ultraviolet rays and generate high temperatures, the surface of the power supply rail will be burned, which will accelerate the wear of the power supply rail and affect the normal power supply of rail transit vehicles. Therefore, during the operation of rail transit vehicles, it is necessary to detect whether arcing occurs between the current collector and the power supply rail. Summary of the invention

[0004] The purpose of the present application is to provide an arc detection device; the arc detection device provided by the present application can perform real-time detection of whether arcing occurs between the current collector and the power supply rail during the operation of a rail transit vehicle, can effectively ensure the reliability and accuracy of the detection results, and can effectively ensure the normal power supply and operation of the rail transit vehicle.

[0005] The technical solutions provided by this application are as follows:

[0006] An arc detection device includes: a pulse power supply, an ultraviolet sensor, a first resistor, a voltage acquisition module and a processing module;

[0007] The first end of the pulse power supply is connected to the first end of the ultraviolet sensor;

[0008] The second end of the ultraviolet sensor is connected to the first end of the first resistor and the first end of the voltage acquisition module respectively;

[0009] The second end of the first resistor is connected to the second end of the voltage acquisition module and the second end of the pulse power supply respectively;

[0010] The pulse power supply is used to output positive pulse voltage and negative pulse voltage;

[0011] The ultraviolet sensor is used to close when receiving the positive pulse voltage and the ultraviolet rays emitted by the arcing between the current collector and the power supply rail, and to open when receiving the negative pulse voltage;

[0012] The voltage acquisition module is used to acquire the voltage value across the first resistor and output the acquired voltage value;

[0013] The processing module is used to receive the voltage value and determine whether arcing occurs between the current collector and the power supply rail according to the received voltage value.

[0014] Optionally, it further includes: a transformer;

[0015] The first end of the pulse power supply is connected to the first end of the primary coil of the transformer;

[0016] The second end of the pulse power supply is connected to the second end of the primary coil of the transformer;

[0017] The first end of the secondary coil of the transformer is connected to the first end of the ultraviolet sensor;

[0018] The second end of the first resistor is connected to the second end of the voltage acquisition module and the second end of the secondary coil of the transformer respectively;

[0019] The transformer is used for boosting voltage.

[0020] Optionally, it further includes: a second resistor;

[0021] The second end of the ultraviolet sensor is connected to the first end of the second resistor;

[0022] The second end of the second resistor is connected to the first end of the first resistor and the first end of the voltage acquisition module respectively.

[0023] Optionally, the processing module is specifically configured to receive the voltage value, and determine that arcing occurs between the current collector and the power supply rail when the received voltage value is greater than or equal to a preset voltage value.

[0024] Optionally, a counter is provided in the processing module;

[0025] The processing module is further used to control the counter to count each time it is determined that arcing occurs between the current collector and the power supply rail, and obtain the arcing rate of arcing between the current collector and the power supply rail according to the count value of the counter, a preset collection cycle duration and a vehicle running time, wherein the preset collection cycle duration is the collection cycle duration for the voltage collection module to collect the voltage value across the first resistor.

[0026] Optionally, it also includes: a display;

[0027] The display is connected to the processing module;

[0028] The processing module is further configured to output arcing alarm information when it is determined that arcing occurs between the current collector and the power supply rail;

[0029] The display is used to receive and display the arcing alarm information.

[0030] Optionally,

[0031] The processing module is further configured to output arc rate alarm information when an arc rate of arcing between the current collector and the power supply rail is greater than or equal to a preset arc rate;

[0032] The display is also used to receive and display the arcing rate alarm information.

[0033] Optionally, it also includes: a warning flashing light;

[0034] The warning flash light is used to provide a light alarm after receiving the arcing alarm information and / or the arcing rate alarm information.

[0035] Optionally, it also includes: an alarm buzzer;

[0036] The alarm buzzer is used to issue a sound alarm after receiving the arcing alarm information and / or the arcing rate alarm information.

[0037] Optionally, it also includes: a communication module;

[0038] The communication module is used to receive the voltage value output by the voltage acquisition module, and transmit the received voltage value to the processing module by wireless transmission.

[0039] Compared with the prior art, the present application provides an arc detection device, comprising: a pulse power supply, an ultraviolet sensor, a first resistor, a voltage acquisition module and a processing module; the first end of the pulse power supply is connected to the first end of the ultraviolet sensor; the second end of the ultraviolet sensor is respectively connected to the first end of the first resistor and the first end of the voltage acquisition module; the second end of the first resistor is respectively connected to the second end of the voltage acquisition module and the second end of the pulse power supply; the pulse power supply is used to output a positive pulse voltage and a negative pulse voltage; the ultraviolet sensor is used to close when receiving a positive pulse voltage and receiving ultraviolet rays emitted by an arc between a current collector and a power supply rail, and disconnect when receiving a negative pulse voltage; the voltage acquisition module is used to collect the voltage values ​​at both ends of the first resistor, and collect the collected voltage values. a voltage value output; a processing module for receiving the voltage value, and determining whether arcing occurs between the current receiver and the power supply rail according to the received voltage value. In the present application, the ultraviolet sensor is closed by the positive pulse voltage output by the pulse power supply and the ultraviolet light emitted by the arcing between the current receiver and the power supply rail, so that a closed loop is formed between the pulse power supply, the ultraviolet sensor and the first resistor, and then the voltage value at both ends of the first resistor is collected by the voltage collection module, and the processing module determines whether arcing occurs between the current receiver and the power supply rail according to the voltage value, so that during the operation of the rail transit vehicle, whether arcing occurs between the current receiver and the power supply rail can be detected in real time, which can effectively ensure the reliability and accuracy of the detection result, and can effectively ensure the normal power supply and operation of the rail transit vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of the structure of an arc detection device disclosed in an embodiment of the present application;

[0042] Figure 2 A schematic diagram of the structure of another arc detection device disclosed in an embodiment of the present application;

[0043] Figure 3 This is a schematic structural diagram of another arc detection device disclosed in an embodiment of the present application;

[0044] Figure numerals: 1-pulse power supply; 2-ultraviolet sensor; 3-first resistor; 4-voltage acquisition module; 5-processing module; 6-transformer; 7-second resistor; 8-display; 9-alarm flash light; 10-alarm buzzer; 11-communication module; 12-current receiver; 13-power supply rail. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. 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 creative work are within the scope of protection of this application.

[0046] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0047] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0049] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0050] like Figure 1As shown, an embodiment of the present application provides an arc detection device, including: a pulse power supply 1, an ultraviolet sensor 2, a first resistor 3, a voltage acquisition module 4 and a processing module 5; the first end of the pulse power supply 1 is connected to the first end of the ultraviolet sensor 2; the second end of the ultraviolet sensor 2 is respectively connected to the first end of the first resistor 3 and the first end of the voltage acquisition module 4; the second end of the first resistor 3 is respectively connected to the second end of the voltage acquisition module 4 and the second end of the pulse power supply 1; the pulse power supply 1 is used to output a positive pulse voltage and a negative pulse voltage; the ultraviolet sensor 2 is used to close when receiving a positive pulse voltage and receiving ultraviolet rays emitted by an arc between the current receiver 12 and the power supply rail 13, and disconnect when receiving a negative pulse voltage; the voltage acquisition module 4 is used to collect the voltage values ​​at both ends of the first resistor 3 and output the collected voltage values; the processing module 5 is used to receive the voltage value, and determine whether an arc occurs between the current receiver 12 and the power supply rail 13 based on the received voltage value.

[0051] In this embodiment, the ultraviolet sensor 2 faces the contact surface of the current receiver 12 and the power rail 13. If an arc occurs between the current receiver 12 and the power rail 13, the contact surface of the current receiver 12 and the power rail 13 emits ultraviolet rays. When the ultraviolet sensor 2 receives the positive pulse voltage output by the pulse power supply 1 and receives the ultraviolet rays emitted by the arc between the current receiver 12 and the power rail 13, the anode and the cathode in the ultraviolet sensor 2 are connected and closed, so that a closed loop is formed between the pulse power supply 1, the ultraviolet sensor 2 and the first resistor 3. The positive pulse voltage generates a voltage across the two ends of the first resistor 3. The voltage acquisition module 4 acquires the voltage value across the two ends of the first resistor 3 and outputs the acquired voltage value to the processing module 5. The processing module 5 receives the voltage value and determines whether an arc occurs between the current receiver 12 and the power rail 13 based on the received voltage value. Specifically, the received voltage can be used to determine whether an arc occurs between the current receiver 12 and the power rail 13. When the value is greater than or equal to a preset voltage value, it is determined that an arc occurs between the current receiver 12 and the power supply rail 13; since the anode and cathode in the general ultraviolet sensor 2 cannot be automatically disconnected, a negative pulse voltage is output by the pulse power supply 1, so that when the ultraviolet sensor 2 receives the negative pulse voltage output by the pulse power supply 1, the anode and cathode in the ultraviolet sensor 2 are disconnected, so that after a period of time, if an arc occurs again between the current receiver 12 and the power supply rail 13 to emit ultraviolet rays, when the ultraviolet sensor 2 receives the positive pulse voltage output by the pulse power supply 1, the anode and cathode in the ultraviolet sensor 2 are connected and closed again, and the real-time voltage value at both ends of the first resistor 3 is collected by the voltage collection module 4, and then the processing module 5 can determine that an arc occurs again between the current receiver 12 and the power supply rail 13 according to the real-time voltage value, which can effectively ensure the reliability and accuracy of the detection result.

[0052] In this embodiment, the voltage acquisition module 4 may be a multimeter or other electronic device for acquiring the voltage value across the resistor; the processing module 5 may be an electronic device such as a processor.

[0053] Compared with the prior art, the present application provides an arc detection device, comprising: a pulse power supply 1, an ultraviolet sensor 2, a first resistor 3, a voltage acquisition module 4 and a processing module 5; the first end of the pulse power supply 1 is connected to the first end of the ultraviolet sensor 2; the second end of the ultraviolet sensor 2 is respectively connected to the first end of the first resistor 3 and the first end of the voltage acquisition module 4; the second end of the first resistor 3 is respectively connected to the second end of the voltage acquisition module 4 and the second end of the pulse power supply 1; the pulse power supply 1 is used to output a positive pulse voltage and a negative pulse voltage; the ultraviolet sensor 2 is used to close when receiving a positive pulse voltage and receiving ultraviolet rays emitted by an arc between a current collector 12 and a power supply rail 13, and to disconnect when receiving a negative pulse voltage; the voltage acquisition module 4 is used to collect the voltage values ​​at both ends of the first resistor 3, and to collect the collected voltage values. The processing module 5 is used to receive the voltage value and determine whether an arc occurs between the current receiver 12 and the power supply rail 13 according to the received voltage value. In the present application, the ultraviolet sensor 2 is closed by the positive pulse voltage output by the pulse power supply 1 and the ultraviolet light emitted by the arc between the current receiver 12 and the power supply rail 13, so that a closed loop is formed between the pulse power supply 1, the ultraviolet sensor 2 and the first resistor 3. The voltage value at both ends of the first resistor 3 is then collected by the voltage collection module 4. The processing module 5 determines whether an arc occurs between the current receiver 12 and the power supply rail 13 according to the voltage value, so that during the operation of the rail transit vehicle, whether an arc occurs between the current receiver 12 and the power supply rail 13 can be detected in real time, which can effectively ensure the reliability and accuracy of the detection result and effectively ensure the normal power supply and operation of the rail transit vehicle.

[0054] like Figure 2 As shown, as an implementation mode, in the embodiment of the present application, it also includes: a transformer 6; the first end of the pulse power supply 1 is connected to the first end of the primary coil of the transformer 6; the second end of the pulse power supply 1 is connected to the second end of the primary coil of the transformer 6; the first end of the secondary coil of the transformer 6 is connected to the first end of the ultraviolet sensor 2; the second end of the first resistor 3 is respectively connected to the second end of the voltage acquisition module 4 and the second end of the secondary coil of the transformer 6; the transformer 6 is used for boosting.

[0055] In this embodiment, if the operating voltage of the ultraviolet sensor 2 used is relatively high (such as an operating voltage of 350V), the positive pulse voltage output by the pulse power supply 1 can be boosted to the operating voltage of the ultraviolet sensor 2 (such as 350V) through the transformer 6, so that when the ultraviolet sensor 2 receives the boosted positive pulse voltage and receives the ultraviolet rays emitted by the arcing between the current receiver 12 and the power supply rail 13, the anode and the cathode in the ultraviolet sensor 2 can be connected and closed.

[0056] like Figure 2 As shown, as an implementation mode, in the embodiment of the present application, it also includes: a second resistor 7; the second end of the ultraviolet sensor 2 is connected to the first end of the second resistor 7; the second end of the second resistor 7 is respectively connected to the first end of the first resistor 3 and the first end of the voltage acquisition module 4.

[0057] In this embodiment, the resistance value of the first resistor 3 can be 10KΩ, and the resistance value of the second resistor 7 can be 1MΩ. When the transformer 6 boosts the positive pulse voltage output by the pulse power supply 1 to 350V output, since the internal resistance of the ultraviolet sensor 2 is small and can be ignored, the voltage value at both ends of the second resistor 7 is approximately 346.5V, and the voltage value at both ends of the first resistor 3 is approximately 3.5V. The boosted positive pulse voltage output from the second end of the ultraviolet sensor 2 is divided by the second resistor 7, so that the voltage value at both ends of the first resistor 3 can be reduced to about 3.5V, so that even if the working voltage range of the voltage acquisition module 4 used is 0-100V, the voltage value at both ends of the first resistor 3 can be effectively collected by the voltage acquisition module 4, which can further effectively ensure the reliability and accuracy of the detection result.

[0058] like Figure 2 As shown, as an implementation mode, in the embodiment of the present application, the processing module 5 is specifically used to receive a voltage value, and when the received voltage value is greater than or equal to a preset voltage value, determine that an arc occurs between the current collector 12 and the power supply rail 13.

[0059] In this embodiment, the preset voltage value is a pre-set voltage value. Since there may be noise interference signals in the detection circuit or the detection environment, the preset voltage value can be set according to the maximum voltage value of the noise interference signal. If the maximum voltage value of the noise interference signal is generally 1V, the preset voltage value can be set to 2V. When the received voltage value is greater than or equal to the preset voltage value, the processing module 5 determines that arcing occurs between the current receiver 12 and the power supply rail 13, which can effectively reduce the influence of the noise interference signal on the detection result, and can further effectively ensure the reliability and accuracy of the detection result.

[0060] As an implementation mode, in the embodiment of the present application, a counter is provided in the processing module 5; the processing module 5 is also used to control the counter to count each time it is determined that arcing occurs between the current collector 12 and the power rail 13, and obtain the arcing rate of arcing between the current collector 12 and the power rail 13 according to the count value of the counter, the preset acquisition cycle duration and the vehicle running time, wherein the preset acquisition cycle duration is the acquisition cycle duration for the voltage acquisition module 4 to acquire the voltage value across the first resistor 3. The counter is not shown in the attached figure.

[0061] In this embodiment, the preset collection cycle duration is the preset collection cycle duration for the voltage collection module 4 to collect the voltage value across the first resistor 3. By multiplying the count value of the counter by the preset collection cycle duration, the total arcing duration of arcing between the current collector 12 and the power supply rail 13 during the vehicle's running time can be obtained. By dividing the total arcing duration by the vehicle's running time, the arcing rate of arcing between the current collector 12 and the power supply rail 13 can be obtained.

[0062] like Figure 3 As shown, as an implementation mode, the embodiment of the present application also includes: a display 8; the display 8 is connected to the processing module 5; the processing module 5 is also used to output arcing alarm information when it is determined that an arc occurs between the current collector 12 and the power supply rail 13; the display 8 is used to receive and display the arcing alarm information.

[0063] In this embodiment, the preset count value is a pre-set count value. When the processing module 5 first determines that an arc occurs between the current receiver 12 and the power supply rail 13, it can output arc alarm information to the display 8. The display 8 receives and displays the arc alarm information, so that the driver in the driver's cab of the vehicle can promptly know the arc occurrence between the current receiver 12 and the power supply rail 13 through the arc alarm information on the display 8.

[0064] like Figure 3 As shown, as an implementation mode, in the embodiment of the present application, the processing module 5 is also used to output arc rate alarm information when the arc rate of arcing between the current collector 12 and the power supply rail 13 is greater than or equal to the preset arc rate; the display 8 is also used to receive and display the arc rate alarm information.

[0065] In this embodiment, the preset arc rate is a preset arc rate. Generally, when the arc rate is greater than or equal to 5%, it indicates that the power supply rail 13 and related lines should be inspected and repaired. The preset arc rate can be preset to 5%. When the arc rate of arcing between the current receiver 12 and the power supply rail 13 is greater than or equal to the preset arc rate, the processing module 5 outputs arc rate alarm information to the display 8. The display 8 receives and displays the arc rate alarm information, so that the driver in the driver's cab of the vehicle can promptly know that the arc rate of arcing between the current receiver 12 and the power supply rail 13 is greater than or equal to the preset arc rate through the arc rate alarm information on the display 8, and then promptly inspect the power supply rail 13 and related lines.

[0066] like Figure 3 As shown, as an implementation mode, the embodiment of the present application also includes: an alarm flash light 9; the alarm flash light 9 is used to perform a light alarm after receiving arcing alarm information and / or arcing rate alarm information.

[0067] In this embodiment, the warning flash light 9 is provided to perform a light alarm after receiving arcing alarm information and / or arcing rate alarm information, so that the driver in the driver's cab of the vehicle can promptly learn through the warning flash light 9 of the abnormal situation of arcing between the current receiver 12 and the power supply rail 13 and / or the abnormal situation of the arcing rate between the current receiver 12 and the power supply rail 13 being greater than or equal to the preset arcing rate.

[0068] like Figure 3 As shown, as an implementation mode, the embodiment of the present application further includes: an alarm buzzer 10; the alarm buzzer 10 is used to issue a sound alarm after receiving arcing alarm information and / or arcing rate alarm information.

[0069] In this embodiment, the alarm buzzer 10 is set to give a sound alarm after receiving arcing alarm information and / or arcing rate alarm information, so that the driver in the driver's cab of the vehicle can promptly know through the alarm buzzer 10 the abnormal situation of arcing between the current receiver 12 and the power supply rail 13 and / or the abnormal situation of arcing between the current receiver 12 and the power supply rail 13 with an arcing rate greater than or equal to a preset arcing rate.

[0070] like Figure 3 As shown, as an implementation mode, the embodiment of the present application also includes: a communication module 11; the communication module 11 is used to receive the voltage value output by the voltage acquisition module 4, and transmit the received voltage value to the processing module 5 by wireless transmission.

[0071] In this embodiment, the voltage collection module 4 can be set at a position below the vehicle close to the current receiver 12, and the processing module 5 can be set in the driver's cab of the vehicle. The voltage value output by the voltage collection module 4 is received through the communication module 11, and the received voltage value is transmitted to the processing module 5 by wireless transmission, so that the voltage value can be effectively transmitted while saving communication cables.

[0072] It should be understood that the use of "system", "device", "unit" and / or "module" in this application is only a method for distinguishing different components, elements, parts, parts or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0073] The embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other.

[0074] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An arc detection device, characterized in that: include: Pulse power supply, ultraviolet sensor, first resistor, voltage acquisition module and processing module; The first end of the pulse power supply is connected to the first end of the ultraviolet sensor; The second end of the ultraviolet sensor is connected to the first end of the first resistor and the first end of the voltage acquisition module respectively; The second end of the first resistor is connected to the second end of the voltage acquisition module and the second end of the pulse power supply respectively; The pulse power supply is used to output positive pulse voltage and negative pulse voltage; The ultraviolet sensor is used to close when receiving the positive pulse voltage and the ultraviolet rays emitted by the arc between the current collector and the power supply rail, and to open when receiving the negative pulse voltage; The voltage acquisition module is used to acquire the voltage value across the first resistor and output the acquired voltage value; The processing module is used to receive the voltage value and determine whether arcing occurs between the current collector and the power supply rail according to the received voltage value.

2. The arc detection device according to claim 1, characterized in that: Also includes: transformer; The first end of the pulse power supply is connected to the first end of the primary coil of the transformer; The second end of the pulse power supply is connected to the second end of the primary coil of the transformer; The first end of the secondary coil of the transformer is connected to the first end of the ultraviolet sensor; The second end of the first resistor is connected to the second end of the voltage acquisition module and the second end of the secondary coil of the transformer respectively; The transformer is used for boosting voltage.

3. The arc detection device according to claim 2, characterized in that: Also includes: A second resistor; The second end of the ultraviolet sensor is connected to the first end of the second resistor; The second end of the second resistor is connected to the first end of the first resistor and the first end of the voltage acquisition module respectively.

4. The arc detection device according to any one of claims 1 to 3, characterized in that: The processing module is specifically configured to receive the voltage value, and determine that arcing occurs between the current collector and the power supply rail when the received voltage value is greater than or equal to a preset voltage value.

5. The arc detection device according to claim 4, characterized in that: A counter is provided in the processing module; The processing module is further used to control the counter to count each time it is determined that arcing occurs between the current collector and the power supply rail, and obtain the arcing rate of arcing between the current collector and the power supply rail according to the count value of the counter, a preset collection cycle duration and a vehicle running time, wherein the preset collection cycle duration is the collection cycle duration for the voltage collection module to collect the voltage value across the first resistor.

6. The arc detection device according to claim 5, characterized in that: Also includes: monitor; The display is connected to the processing module; The processing module is further configured to output arcing alarm information when it is determined that arcing occurs between the current collector and the power supply rail; The display is used to receive and display the arcing alarm information.

7. The arc detection device according to claim 6, characterized in that: The processing module is further configured to output arc rate alarm information when an arc rate of arcing between the current collector and the power supply rail is greater than or equal to a preset arc rate; The display is also used to receive and display the arcing rate alarm information.

8. The arc detection device according to claim 7, characterized in that: Also includes: Warning flashing lights; The warning flash light is used to provide a light alarm after receiving the arcing alarm information and / or the arcing rate alarm information.

9. The arc detection device according to claim 7, characterized in that: Also includes: Alarm buzzer; The alarm buzzer is used to issue a sound alarm after receiving the arcing alarm information and / or the arcing rate alarm information.

10. The arc detection device according to claim 1, characterized in that: Also includes: Communication module; The communication module is used to receive the voltage value output by the voltage acquisition module, and transmit the received voltage value to the processing module by wireless transmission.

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