Contact rail and collector shoe arcing array detection system and method

Abstract

The invention discloses a contact rail and collector shoe arcing array detection system and a contact rail and collector shoe arcing array detection method, and relates to the technical field of contact rail and collector shoe arcing detection. A plurality of optical fibers at an optical fiber array acquisition end in the composite optical fiber receiving array are arranged in a straight line, different optical fibers acquire arcing generated at different positions between a collector shoe and a contact rail and generate arcing light signals, and an arcing array detection device receives the arcing light signals, converts the arcing light signals into electric signals and then performs arcing detection. The arcing detection result and the specific position of arcing on the collector shoe sliding plate are obtained, the computer displays and stores the data of the arcing detection result, due to the arrangement of the composite optical fiber receiving array, arcing occurring at different positions between the collector shoe and the contact rail can be detected, and the detection precision is high. By adopting the optical fiber array, the occurrence position of the collector shoe sliding plate can be accurately positioned, and an accurate basis is provided for polishing and maintenance of the collector shoe sliding plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of contact rail and shoe arcing detection, and more particularly to a contact rail and shoe arcing array detection system and method. BACKGROUND

[0002] The shoe rail is a common rail transit vehicle current collection system, including a current collector shoe and a contact rail. The current collector shoe refers to the current collection device of the underground electric multiple unit in contact with the contact rail, and the contact rail transmits electric energy to the electric multiple unit through the current collector shoe for use.

[0003] Shoe rail arcing refers to the discharge phenomenon caused by unstable contact between the current collector shoe and the contact rail during dynamic operation, which is a state of mechanical separation and electrical connection. For shoe rail arcing, there are currently two methods: image analysis and characteristic spectrum.

[0004] The image analysis method uses a high-sensitivity image sensor to collect arcing images. This method has high usage costs, and the deployment position of the image sensor is severely limited. In addition, the normal operation and service life of the image sensor are affected by high voltage. This method is currently in the experimental stage.

[0005] The characteristic spectrum method analyzes the collected light samples. Light collection requires the use of a light sensor. The internal circuit board and electronic components of the light sensor are easily affected when the train and pantograph are in operation. At this time, the distance between the light sensor and the pantograph needs to be increased, but this will result in insufficient light collection.

[0006] On the basis of the characteristic spectrum method, a single optical fiber is used to guide light, and a motor-controlled optical fiber receiving head is used to align with the ultraviolet arcing point for measurement. This scheme solves the problem of internal circuit boards and electronic components being easily affected, but introduces new problems. Since arcing can occur anywhere on the pantograph slide plate and the arcing point is random, the position of the arcing point cannot be predicted in advance, which leads to the problem of not being able to control the motor to move to the arcing point, resulting in a large amount of missed detection. SUMMARY

[0007] In order to overcome the defects existing in the prior art, the application discloses a contact rail and current collector shoe arc array detection system and method, and aims to solve the problem of a large number of missed detections caused by the single optical fiber light guide of the feature spectrum method in the prior art. The application is characterized in that a composite optical fiber receiving array, an arc array detection device and a computer are arranged, the optical fiber array of the composite optical fiber receiving array is arranged in a line, different optical fibers collect arcs occurring at different positions between the current collector shoe and the contact rail and generate arc light signals, the arc array detection device receives the arc light signals, converts the arc light signals into electric signals and then detects the arcs, arc detection results and specific positions of the arcs occurring on the current collector shoe slide plate are obtained, and the computer displays and stores the arc detection result data. Since the composite optical fiber receiving array is arranged, arcs occurring at different positions between the current collector shoe and the contact rail can be detected.

[0008] In order to achieve the above object, the application adopts the following technical scheme: The application discloses a contact rail and current collector shoe arc array detection system, which comprises a composite optical fiber receiving array, an arc array detection device, a computer and a positioning module. The composite optical fiber receiving array is installed on the current collector shoe arm and is in communication connection with the arc array detection device, the composite optical fiber receiving array comprises an optical fiber array composed of a plurality of optical fibers, the optical fiber array is arranged in a line at the optical fiber array collecting end, different optical fibers collect arcs occurring at different positions between the current collector shoe and the contact rail and generate arc light signals, and the arc light signals are sent to the arc array detection device through the optical fiber bundle. The arc array detection device is connected with the computer, receives the arc light signals, converts the arc light signals into electric signals, detects the arcs, and sends arc detection result data to the computer. The positioning module is connected with the computer and is used for positioning the position of the train and sending train position data to the computer. The computer receives the arc detection result data and the train position data, displays and stores the arc detection result data and the train position data after the arc detection result data and the train position data are associated, and evaluates the current collector shoe current collection quality.

[0009] Preferably, the composite optical fiber receiving array further comprises a support and a receiving lens, the support is assembled on the current collector shoe arm, the optical fibers at the optical fiber array collecting end are arranged in a line in a proportionally close manner, and the optical fibers are assembled on the top of the support and are horizontally arranged along the length direction of the current collector shoe slide plate in a plane flush with the current collector shoe slide plate; and the receiving lens is proportionally arranged in front of the optical fiber array collecting end.

[0010] Preferably, a plurality of optical fibers in the optical fiber array are provided with different optical fiber numbers, and the optical fiber numbers of the optical fibers in the optical fiber array correspond to different positions of the collector shoe slide plate. When the arc light signal is sent, the optical fiber numbers are sent to the arc array detection device together, and the arc array detection device obtains the specific position of the arc on the collector shoe slide plate by interpreting the optical fiber numbers and obtains the intensity and duration of the arc by interpreting the intensity and duration of the arc light signal.

[0011] Preferably, the accuracy of the arc detection position of the collector shoe slide plate is adjusted by adjusting the spacing of the adjacent optical fiber collection ends.

[0012] Preferably, the bracket includes a bottom bracket, a vertical bracket, and a top bracket. The bottom bracket is in a U-shaped clamp structure and is clamped on the collector shoe arm. The upper and lower ends of the vertical bracket are connected to the top bracket and the bottom bracket, respectively. The top bracket is a T-shaped optical fiber array bracket, and the optical fiber array collection end is assembled in the top bracket.

[0013] Preferably, the optical fiber array is arranged in a single-layer, double-layer, or more than double-layer structure.

[0014] Preferably, the arc array detection device, the computer, and the positioning module are all installed on the train.

[0015] Preferably, the arc array detection device includes a photoelectric conversion diode array, a bias circuit, an amplification circuit, a low-pass filter circuit, a signal adjustment circuit, an analog-to-digital conversion circuit, and a micro-processing unit. The photoelectric conversion diode array is in communication connection with the composite optical fiber receiving array, receives the arc light signal, and converts it into an electric signal. The bias circuit is in communication connection with the photoelectric conversion diode array and is used to provide a reverse bias for the photoelectric conversion diode array. The amplification circuit is in communication connection with the photoelectric conversion diode array and is used to amplify the electric signal obtained after the reverse bias. The low-pass filter circuit is in communication connection with the amplification circuit and is used to filter high-frequency noise from the amplified electric signal. The signal adjustment circuit is in communication connection with the low-pass filter circuit and is used to perform signal adjustment on the electric signal after filtering the high-frequency noise. The analog-to-digital conversion circuit is in communication connection with the signal adjustment circuit and is used to perform analog-to-digital conversion on the electric signal after signal adjustment. The micro-processing unit is in communication connection with the analog-to-digital conversion circuit and the computer, respectively, is used to process the signal after analog-to-digital conversion to obtain the arc detection result and send the arc detection result to the computer.

[0016] Based on the above contact rail and shoe arc array detection system, the application further provides a contact rail and shoe arc array detection method, comprising the following steps: S1, during the train operation, the train position is located and the train position data is sent to the computer, and the arc is generated when the current collector shoe contacts the contact rail; S2, the optical fiber collection end on the composite optical fiber receiving array collects the arc and generates an arc light signal, and the arc light signal is sent to the arc array detection device through the optical fiber bundle; S3, the arc array detection device receives the arc light signal and converts it into an electric signal for arc detection, and sends the arc detection result data to the computer; S4, the computer receives the arc detection result data and the train position data, and displays and stores the arc detection result data and the train position data after association, and evaluates the current collector shoe current collection quality.

[0017] Preferably, the S3 step comprises the following steps: S31, the photoelectric conversion diode array receives the arc light signal and converts it into an electric signal, and the bias circuit provides a reverse bias voltage to the photoelectric conversion diode array; S32, the amplified circuit amplifies the electric signal obtained after the reverse bias voltage; S33, the low-pass filter circuit filters out high-frequency noise from the amplified electric signal; S34, the signal adjustment circuit adjusts the electric signal after filtering out high-frequency noise; S35, the analog-to-digital conversion circuit converts the signal-adjusted electric signal into an analog signal; S36, the micro-processing unit processes the analog-to-digital converted signal to obtain the arc detection result, and sends the arc detection result to the computer.

[0018] Preferably, the S36 step and the S4 step comprise: S361, the micro-processing unit converts the arc light intensity value of each channel optical fiber into an arc light intensity numerical value; S362, according to the optical fiber sorting, the arc light intensity numerical value of different channel optical fibers in each measurement is composed into an arc one-dimensional array; S363, the arc one-dimensional arrays collected at different times are composed into an arc two-dimensional array in chronological order, and the arc two-dimensional array is displayed in the form of a gray scale image to form an arc distribution time axis gray scale image; S364, the computer displays and stores the arc distribution time axis gray scale image after binding the train position, and analyzes the arc distribution time axis gray scale image to evaluate the current collector shoe current collection quality.

[0019] The application has the following advantages: 1. The contact rail and trolley shoe arc array detection system and method provided by the application, by setting a composite optical fiber receiving array, an arc array detection device and a computer, the optical fiber array collection end of the composite optical fiber receiving array is arranged in a line, different optical fibers collect arcs occurring at different positions between the trolley shoe and the contact rail and generate arc light signals, the arc array detection device receives the arc light signals and converts them into electrical signals for arc detection, obtaining arc detection results and the specific position of the arc occurring on the trolley shoe slide, and the computer displays and stores the arc detection result data, since the composite optical fiber receiving array is provided, arcs occurring at different positions between the trolley shoe and the contact rail can be detected, and the detection accuracy is high.

[0020] 2. The application uses an optical fiber array to achieve accurate positioning of the trolley shoe slide position, provides accurate basis for trolley shoe slide polishing and maintenance, and improves the current collection reliability and quality of the train. 3. The application realizes trolley shoe slide arc visualization imaging conversion through optical fiber array data collection and computer data processing. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the contact rail and trolley shoe arc array detection system of the application. Figure 2 It is a composite optical fiber receiving array structure section. Figure 3 It is an optical fiber array installation plan view. Figure 4 It is a schematic diagram of the arc array detection device of the application. Figure 5 It is a schematic diagram of the arc distribution time axis gray scale image production method of the application. REFERENCE SIGNS: 1. composite optical fiber receiving array; 11. optical fiber array; 12. support; 121. bottom support; 122. vertical support; 123. top support; 2. arc array detection device; 21. photoelectric conversion diode array; 22. bias circuit; 23. amplification circuit; 24. low-pass filter circuit; 25. signal adjustment circuit; 26. analog-to-digital conversion circuit; 27. micro-processing unit; 3. computer; 4. positioning module; 5. trolley shoe; 51. trolley shoe arm; 52. trolley shoe slide; 6. contact rail. DETAILED DESCRIPTION

[0022] The concept, specific structure and technical effects of the application will be described clearly and completely in combination with the embodiments and the drawings to fully understand the purpose, features and effects of the application.

[0023] Example 1 A contact rail and trolley shoe arc array detection system, as shown inFigure 1 As shown, it comprises a composite optical fiber receiving array 1, an arc array detection device 2, a computer 3 and a positioning module 4; The composite optical fiber receiving array 1 is installed on the current collector shoe arm 51 and is in communication connection with the arc array detection device 2. The composite optical fiber receiving array 1 comprises an optical fiber array 11 composed of a plurality of optical fibers. The collection end of the optical fiber array 11 is arranged in a line with different optical fibers collecting arcs occurring at different positions between the current collector shoe 5 and the contact rail 6 and generating arc light signals. The arc light signals are sent to the arc array detection device 2 through the optical fiber bundle. The arc array detection device 2 is connected with the computer 3. After receiving the arc light signals and converting them into electric signals, the arc array detection device 2 performs arc detection and sends the arc detection result data to the computer 3. The positioning module 4 is connected with the computer 3 and is used for positioning the train position and sending the train position data to the computer 3. The computer 3 receives the arc detection result data and the train position data, correlates the arc detection result data and the train position data, and then displays and stores them, and evaluates the current collector shoe current collection quality.

[0024] In this embodiment, the composite optical fiber receiving array 1 is used for collecting arcs occurring between the current collector shoe 5 and the contact rail 6 and generating arc light signals. The arc array detection device 2 is used for receiving the arc light signals, converting the optical signals into electric signals, and then sending them to the computer 3 after data processing by a microprocessor. The positioning module 4 is used for receiving positioning information in real time, such as through a GPS signal, a train positioning signal, train mileage information, a speed encoder, etc. The positioning information is used for judging the position of the contact rail where the arc occurs. The computer 3 is used for correlating the arc detection result data and the train position data, obtaining the specific position of the train when the arc occurs, displaying and storing the arc detection result data occurring at the specific position of the train, and evaluating the current collector shoe current collection quality by using the arc detection result data.

[0025] As shown in FIG. 1, Figure 1 The composite optical fiber receiving array 1 further comprises a bracket 12 and a receiving lens. The bracket 12 is assembled on the current collector shoe arm 51. The collection end of the optical fiber array 11 is arranged in a line with a proportional and close arrangement, and is assembled on the top of the bracket 12. The collection end of the optical fiber array 11 is flush with the plane of the current collector shoe slide plate 52 and is arranged horizontally along the length direction of the current collector shoe slide plate 52. The receiving lens is arranged proportionally in front of the collection end of the optical fiber array 11. The receiving lens is used for adjusting the light receiving angle.

[0026] As shown in FIG. 1, Figure 3As shown, several optical fibers in the optical fiber array 11 are provided with different optical fiber numbers, the optical fibers with different optical fiber numbers in the optical fiber array 11 correspond to different positions of the collector shoe slide plate 52, the optical fiber array 11 sends the optical fiber numbers to the arc array detection device 2 when sending the arc light signal, the arc array detection device 2 obtains the specific position of the arc occurring on the collector shoe slide plate 52 by interpreting the optical fiber numbers, and obtains the intensity and duration of the arc by interpreting the intensity and duration of the arc light signal. By adjusting the spacing of the adjacent optical fiber collection ends, the arc detection position accuracy of the collector shoe slide plate 52 is adjusted.

[0027] As shown in Figure 2 The bracket 12 includes a bottom bracket 121, a vertical bracket 122 and a top bracket 123, the bottom bracket 121 adopts a U-shaped clamp structure and is clamped on the collector shoe arm 51, the upper and lower ends of the vertical bracket 122 are connected to the top bracket 123 and the bottom bracket 121 respectively, and the top bracket 123 is a T-shaped optical fiber array bracket, and the collection end of the optical fiber array 11 is assembled in the top bracket 123.

[0028] The optical fiber array 11 is arranged in a single-layer, double-layer or double-layer or more arrangement structure.

[0029] The arc array detection device 2, the computer 3 and the positioning module 4 are all installed on the train.

[0030] In the embodiment, the composite optical fiber receiving array includes a mounting bracket, receiving lenses arranged in equal proportions, and optical fibers arranged in equal proportions. The bottom of the mounting bracket adopts a U-shaped clamp structure design and is fixedly connected with the collector shoe arm. The optical fiber array is flush with the plane of the contact slide plate, and the arc light occurring on the contact slide plate is conducted to the arc array detection device for collection, detection and quantification. The optical fiber array is arranged horizontally along the length direction of the slide plate, and when an arc occurs on the slide plate, the optical fiber at the arc occurrence point can conduct the light emitted at the arc point to the arc array detection device, and the specific position of the arc occurring on the collector shoe slide plate and the intensity and duration of the arc can be accurately positioned through the optical fiber number. By changing the density (spacing ratio) of the optical fiber array arrangement, the higher the density of the optical fiber array arrangement, the higher the accuracy of the arc occurrence position detection on the slide plate, and the positioning accuracy is equal to the spacing of the adjacent optical fibers. The position detection accuracy is improved to half of the spacing of the adjacent optical fibers by difference value operation of the spacing of the adjacent optical fibers, that is, the smaller the spacing of the adjacent optical fibers, the higher the position detection accuracy. The diameter of the common single-mode bare fiber is about 0.125 mm, and if the optical fibers are arranged in a tight line, the positioning accuracy of the arc occurring on the collector shoe slide plate can reach an accuracy of 0.0625 mm. In order to improve the detection and positioning accuracy, the optical fiber array structure of the present scheme can also be designed as a double-layer or multi-layer staggered arrangement.

[0031] As shown in Figure 4As shown, the arc array detection device 2 includes a photoelectric conversion diode array 21, a bias circuit 22, an amplification circuit 23, a low-pass filter circuit 24, a signal adjustment circuit 25, an analog-to-digital conversion circuit 26, and a micro-processing unit 27. The photoelectric conversion diode array 21 is communicatively connected with the composite optical fiber receiving array 1, receives the arc light signal and converts it into an electric signal; The bias circuit 22 is communicatively connected with the photoelectric conversion diode array 21, and is configured to provide a reverse bias for the photoelectric conversion diode array 21; The amplification circuit 23 is communicatively connected with the photoelectric conversion diode array 21, and is configured to amplify the electric signal obtained after the reverse bias; The low-pass filter circuit 24 is communicatively connected with the amplification circuit 23, and is configured to filter high-frequency noise from the amplified electric signal; The signal adjustment circuit 25 is communicatively connected with the low-pass filter circuit 24, and is configured to perform signal adjustment on the electric signal after the high-frequency noise is filtered out; The analog-to-digital conversion circuit 26 is communicatively connected with the signal adjustment circuit 25, and is configured to perform analog-to-digital conversion on the signal-adjusted electric signal; The micro-processing unit 27 is communicatively connected with the analog-to-digital conversion circuit 26 and the computer 3, respectively, and is configured to process the signal after the analog-to-digital conversion to obtain an arc detection result, and send the arc detection result to the computer 3.

[0032] In this embodiment, the arc array detection device mainly consists of a photoelectric conversion diode array, a bias circuit, an amplification circuit, a low-pass filter circuit, a signal adjustment circuit, an analog-to-digital conversion circuit, and a micro-processing unit. The photoelectric diode array receives the arc light signal from the optical fiber and converts it into a current signal (when light shines on the PN junction of the photoelectric diode, a photoelectron-hole pair is generated, thereby forming a photocurrent), the bias circuit provides a reverse bias for the photoelectric diode array (a reverse bias is usually required for the photoelectric diode, which can increase its response speed and improve its linear range. The reverse bias can reduce the width of the depletion region of the PN junction, making it easier for the photoelectron-hole pair to be separated, thereby generating a larger photocurrent), and the application of the reverse bias brings several benefits: a. It can reduce the dark current of the photoelectric diode (leakage current without light), thereby improving the sensitivity of the circuit.

[0033] b. It can provide a stable operating point for the photoelectric diode, which is crucial for the linear response and repeatability of the signal. Through the bias circuit, the photoelectric diode can maintain a relatively stable working state under different light conditions.

[0034] c. The relationship between the output current of the photodiode and the incident light intensity needs to be as linear as possible. Appropriate bias can improve this linearity, allowing the photodiode to provide a good linear response over a wider range of illumination.

[0035] d. By providing a stable bias to the photodiode, noise caused by bias fluctuations can be reduced, thereby improving signal quality.

[0036] Since the bias output electrical signal is weak, an amplification circuit is designed to amplify the signal. The amplified signal then passes through a low-pass filter circuit to remove high-frequency noise and prevent aliasing. A signal conditioning circuit conditions the noise-filtered signal to match the analog-to-digital converter (ADC), ensuring signal detection accuracy. A microprocessor processes and converts the data after ADC conversion. The microprocessor sends the detection results to a computer for processing, generating a grayscale image of the arc distribution timeline for display and storage. Analysis of the arc distribution grayscale image accurately assesses the current collection quality of the collector shoe.

[0037] Example 2 A method for detecting arcing arrays of contact rails and current collector shoes includes the following steps: S1. During train operation, the train position is located and the train position data is sent to computer 3. At the same time, the current collector shoe 5 contacts the contact rail 6 to generate an arc. S2. The fiber acquisition end on the composite fiber receiving array 1 collects the arc and generates the arc light signal, and sends the arc light signal to the arc array detection device 2 through the fiber bundle; S3. The arc array detection device 2 receives the arc optical signal and converts it into an electrical signal to perform arc detection, and sends the arc detection result data to the computer 3. S4, Computer 3 receives arc detection result data and train position data, and displays and stores the arc detection result data and train position data after associating them, as well as evaluating the current collection quality of the current collector shoe.

[0038] Step S3 includes the following steps: S31, the photoelectric conversion diode array 21 receives the arc light signal and converts it into an electrical signal, and the bias circuit 22 provides reverse bias to the photoelectric conversion diode array 21; S32, Amplifier circuit 23 amplifies the electrical signal obtained after reverse bias; S33 and low-pass filter circuit 24 filter out high-frequency noise from the amplified electrical signal; S34, Signal adjustment circuit 25 performs signal adjustment on the electrical signal after filtering out high-frequency noise; S35, Analog-to-digital conversion circuit 26 performs analog-to-digital conversion on the adjusted electrical signal; S36, the micro-processing unit 27 processes the analog-to-digital converted signal to obtain an arc detection result and sends the arc detection result to the computer 3.

[0039] The S36 step and the S4 step include: S361, the micro-processing unit 27 converts the arc light intensity value of each channel optical fiber into an arc light intensity numerical value; S362, according to the optical fiber sequence, the arc light intensity numerical value of each channel optical fiber in each measurement is composed into an arc one-dimensional array; S363, the arc one-dimensional arrays collected at different time points are composed into an arc two-dimensional array in chronological order, and the arc two-dimensional array is displayed in the form of a gray-scale image to form an arc distribution time axis gray-scale image; S364, the computer 3 binds the arc distribution time axis gray-scale image with the train position, displays and stores the arc distribution time axis gray-scale image, and analyzes and evaluates the current collector shoe current collection quality based on the arc distribution time axis gray-scale image.

[0040] As shown in Figure 5 the microprocessor converts the arc light intensity value of each channel optical fiber into a numerical value, and then according to the optical fiber sequence, the arc light intensity numerical value of each channel is composed into a one-dimensional array. The arc arrays collected at different time points are composed into a two-dimensional array in chronological order, and the two-dimensional array is displayed in the form of a gray-scale image to form an arc distribution time axis gray-scale image.

[0041] The above describes the embodiments of the present application, but the present application is not limited to the above-mentioned embodiments. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A contact rail and current collector shoe arc detection array system, characterized in that, It comprises a composite optical fiber receiving array (1), an arc array detection device (2), a computer (3) and a positioning module (4); The composite optical fiber receiving array (1) is installed on the current collector shoe arm (51) and is in communication connection with the arc array detection device (2), and the composite optical fiber receiving array (1) comprises an optical fiber array (11) composed of a plurality of optical fibers; the optical fiber array (11) collects arc occurring at different positions between the current collector shoe (5) and the contact rail (6) through the different optical fibers arranged in a line, and generates arc light signals, and sends the arc light signals to the arc array detection device (2) through the optical fiber bundle; The arc array detection device (2) is connected with the computer (3), receives the arc light signals, converts them into electric signals, detects the arc, and sends the arc detection result data to the computer (3); The positioning module (4) is connected with the computer (3) and is used for positioning the train position and sending the train position data to the computer (3); The computer (3) receives the arc detection result data and the train position data, correlates them, displays and stores them, and evaluates the current collection quality of the current collector shoe.

2. A contact rail and shoe arcing array detection system as defined in claim 1, wherein, The composite optical fiber receiving array (1) further comprises a support (12) and a receiving lens; the support (12) is assembled on the current collector shoe arm (51); the optical fiber array (11) is assembled on the top of the support (12) with the plurality of optical fibers arranged in a line and in proportion; the optical fiber array (11) is horizontally arranged along the length direction of the current collector shoe slide plate (52) and is flush with the plane of the current collector shoe slide plate (52); and the receiving lens is arranged in proportion in front of the optical fiber array (11).

3. A contact rail and shoe arcing array detection system as defined in claim 1, wherein, The plurality of optical fibers in the optical fiber array (11) are provided with different optical fiber numbers, the optical fibers with different optical fiber numbers in the optical fiber array (11) correspond to different positions of the current collector shoe slide plate (52), the optical fiber array (11) sends the optical fiber numbers to the arc array detection device (2) when sending the arc light signals, the arc array detection device (2) obtains the specific position of the arc occurring on the current collector shoe slide plate (52) by interpreting the optical fiber numbers, and obtains the intensity and duration of the arc by interpreting the intensity and duration of the arc light signals.

4. A contact rail and shoe arcing array detection system as defined in claim 1, wherein, The interval between the adjacent optical fiber collecting ends is adjusted to adjust the arc detection position accuracy of the current collector shoe slide plate (52).

5. A contact rail and shoe arcing array detection system as defined in claim 1 wherein, The support (12) comprises a bottom support (121), a vertical support (122) and a top support (123); the bottom support (121) is in a U-shaped clamping structure and is clamped on the current collector shoe arm (51); the upper and lower ends of the vertical support (122) are connected with the top support (123) and the bottom support (121) respectively; the top support (123) is a T-shaped optical fiber array support; and the optical fiber array (11) is assembled in the top support (123).

6. A contact rail and shoe arcing array detection system as defined in claim 1 wherein, The optical fiber array (11) is arranged in a single-layer, double-layer or double-layer-above structure; The arc array detection device (2), the computer (3) and the positioning module (4) are all installed on the train.

7. A contact rail and shoe arcing array detection system as defined in claim 1 wherein, The arc array detection device (2) comprises a photoelectric conversion diode array (21), a bias circuit (22), an amplification circuit (23), a low-pass filter circuit (24), a signal adjustment circuit (25), an analog-to-digital conversion circuit (26) and a micro processing unit (27). The photoelectric conversion diode array (21) is in communication connection with the composite optical fiber receiving array (1), receives the arc light signal and converts it into an electric signal. The bias circuit (22) is in communication connection with the photoelectric conversion diode array (21) and is used to provide a reverse bias for the photoelectric conversion diode array (21). The amplification circuit (23) is in communication connection with the photoelectric conversion diode array (21) and is used to amplify the electric signal obtained after the reverse bias. The low-pass filter circuit (24) is in communication connection with the amplification circuit (23) and is used to filter high-frequency noise from the amplified electric signal. The signal adjustment circuit (25) is in communication connection with the low-pass filter circuit (24) and is used to adjust the signal of the electric signal after the high-frequency noise is filtered. The analog-to-digital conversion circuit (26) is in communication connection with the signal adjustment circuit (25) and is used to convert the signal of the electric signal after the adjustment into an analog signal. The micro processing unit (27) is in communication connection with the analog-to-digital conversion circuit (26) and a computer (3) respectively, is used to process the signal after the analog-to-digital conversion to obtain an arc detection result, and sends the arc detection result to the computer (3).

8. A method for detecting a pantograph and shoe arc array according to the arc array detection system of any one of claims 1 to 7, characterized in that, The method comprises the following steps: During the train operation, the position of the train is located and the train position data is sent to the computer (3), and at the same time, the current collector shoe (5) is in contact with the contact rail (6) to generate an arc; The optical fiber collecting end on the composite optical fiber receiving array (1) collects the arc and generates an arc light signal, and sends the arc light signal to the arc array detection device (2) through the optical fiber bundle; The arc array detection device (2) receives the arc light signal and converts it into an electric signal, and then performs arc detection, and sends the arc detection result data to the computer (3); The computer (3) receives the arc detection result data and the train position data, correlates the arc detection result data and the train position data, and then displays and stores them, and evaluates the current collection quality of the current collector shoe.

9. A method of detecting an arcing array of a contact rail and a current collector shoe according to claim 8, characterized in that, The arc array detection device (2) receives the arc light signal and converts it into an electric signal, and then performs arc detection, and sends the arc detection result data to the computer (3), which comprises: The photoelectric conversion diode array (21) receives the arc light signal and converts it into an electric signal, and the bias circuit (22) provides a reverse bias for the photoelectric conversion diode array (21); The amplification circuit (23) amplifies the electric signal obtained after the reverse bias; The low-pass filter circuit (24) filters high-frequency noise from the amplified electric signal; The signal adjustment circuit (25) adjusts the signal of the electric signal after the high-frequency noise is filtered; The analog-to-digital conversion circuit (26) converts the signal of the electric signal after the adjustment into an analog signal; The micro processing unit (27) processes the signal after the analog-to-digital conversion to obtain an arc detection result, and sends the arc detection result to the computer (3).

10. A method of detecting an arcing array of a contact rail and a current collector shoe according to claim 9, characterized in that, The micro-processing unit (27) processes the signal after analog-digital conversion to obtain an arc detection result, and sends the arc detection result to the computer (3), including: The micro-processing unit (27) converts the arc light intensity value of each channel optical fiber into an arc light intensity numerical value; According to the optical fiber sequence, the arc light intensity numerical value of different channel optical fibers in each measurement is composed into an arc one-dimensional array; The arc one-dimensional arrays collected at different time are composed into an arc two-dimensional array in chronological order, and the arc two-dimensional array is displayed in the form of a gray-scale image to form an arc distribution time axis gray-scale image; The computer (3) displays and stores the arc distribution time axis gray-scale image after binding the train position, and analyzes and evaluates the current collector current collection quality according to the arc distribution time axis gray-scale image.

Images