CN116086522A - Straddle type single-track shoe rail monitoring system and control method thereof - Google Patents

Abstract

The invention discloses a seat type monorail boot track monitoring system which comprises vehicle bottom equipment, vehicle interior equipment and a ground monitoring terminal, wherein the vehicle bottom equipment is provided with a monitoring mechanism which is arranged at the vehicle bottom and used for monitoring a monorail boot track, the monitoring mechanism is connected with and outputs a monitoring signal to the vehicle interior equipment, and the vehicle interior equipment transmits the acquired monitoring signal to the ground monitoring terminal through a wireless network. According to the shoe rail on-line monitoring device of the straddle type monorail system, through daily on-line real-time monitoring, fault information is mastered at the first time, fault reasons are analyzed, fault points are located timely, necessary measures are taken, the current-collecting quality of the shoe rail is improved, the operation cost is saved, and the operation safety of a vehicle is guaranteed.

Description

A straddle type monorail shoe rail monitoring system and its control method

technical field

The invention relates to an on-line monitoring system for shoe rail current intake, in particular to a monitoring technology applied to the state of a straddle-type monorail shoe rail.

Background technique

The shoe rail current receiving system is composed of contact rail, current collector and power supply system. The contact rail is also called the third rail, and the installation methods mainly include upper contact, lower contact and side contact. The current collector is installed on the bogie of the vehicle, and the sliding plate of the current collector makes the side of the sliding plate contact with the contact rail through springs, cylinders and other elastic elements to realize the current receiving.

Straddle monorail is a new type of urban rail transit system. It is adopted by more and more cities because of its strong climbing ability, small turning radius, low noise, short construction period and low construction cost. Its current receiving method adopts the side contact current receiving system of the shoe rail current receiving system. In the daily operation process, the receiver often faces faults such as shoe collision caused by poor shoe-rail fit, skateboard defects, abnormal wear of the skateboard, off-line arcing, temperature rise, unstable contact pressure, abnormal power supply rails, etc., resulting in The replacement cycle of the collector is short, and the operating cost is high. If there is no online monitoring method after the contact rail and current receiver fail, it is impossible to locate and analyze the cause of the failure, which increases the workload of daily maintenance and increases the cost of operation and maintenance.

At present, shoe rail flow collection is mainly used in urban rail transit fields such as subways and light rails. Check two ways. Manual patrol inspection requires a lot of manpower and time, and the operation efficiency is low; although the inspection vehicle inspection efficiency has been significantly improved, it can only be tested after the vehicle is out of service, and possible safety hazards cannot be discovered in time. There is a certain difference in the design of the vehicle and the operating vehicle, so it cannot truly and accurately reflect the shoe-rail relationship in the process of vehicle operation.

Therefore, a reliable online monitoring method is needed to monitor the working status and operation status of the shoe-rail, so as to predict the abnormal matching relationship of the shoe-rail and take corresponding measures.

Contents of the invention

The technical problem to be solved by the present invention is to realize a straddle type monorail system shoe rail online monitoring device, which can perform real-time online monitoring when the vehicle is running.

In order to achieve the above object, the technical solution adopted by the present invention is: a seat type monorail boot rail monitoring system, the system includes vehicle bottom equipment, in-vehicle equipment, and a ground monitoring terminal. The monitoring mechanism of the shoe rail, the monitoring mechanism is connected and outputs monitoring signals to the in-vehicle equipment, and the in-vehicle equipment transmits the obtained monitoring signals to the ground monitoring terminal through the wireless network.

The vehicle underbody equipment includes contact rail geometric parameter detection, vehicle body vibration compensation module, shoe-rail relationship video monitoring, current detection, shoe-rail arc monitoring, shoe-rail hard point monitoring, and shoe-rail contact pressure monitoring.

The geometric parameter detection of the contact rail is a 2D laser displacement sensor, and the contour information of the current receiving surface of the power supply rail is obtained through a visual imaging model;

The vehicle body vibration compensation module is fixed on the geometric parameter detection of the contact rail, and transmits the collected vibration signal to the geometric parameter detection of the contact rail;

The video monitoring of the shoe-rail relationship is a high-definition camera for real-time shooting of the running conditions of the shoe-rail;

The current detection is an open current sensor for collecting vehicle traction current;

The shoe rail arc monitoring is an ultraviolet photoelectric sensor equipped with an ultraviolet lens and an ultraviolet filter

The hard point monitoring of the shoe rail is a module fixed on the support rod of the current collector, and the module is provided with an acceleration sensor for collecting hard point acceleration, an acquisition circuit board connected to the acceleration sensor, and a power supply unit for power supply;

The shoe-rail contact pressure monitoring is a load cell installed between the springs of the current collector, or a strain gauge attached to a metal plate connected with a carbon slide, or a pressure sensor installed on a collector shoe.

The 2D laser displacement sensor is installed on the skirt board column through the 2D sensor mounting bracket;

The video high-definition camera is installed on the skirt board column through the video monitoring installation bracket;

The ultraviolet photoelectric sensor is installed on the apron column through the ultraviolet photoelectric sensor mounting bracket to accurately capture the arc;

The current sensor is installed on the high-voltage bus of the current collector to perform current sampling;

The acceleration sensor is installed on the connecting arm of the current collector for detecting impact acceleration;

The pressure sensor is installed between the current collector slide plate and the metal bracket to collect the pressure between the shoe rails.

The high-definition camera is connected to the storage device of the vehicle, and the shooting information is stored on the storage device, and the storage device is preset with a download interface;

The shoe-rail arc monitoring is equipped with a sensor that collects the current signal between the contact rail and the receiving shoe. The sensor is connected to the shoe-rail arc monitoring and sends the induction signal to the shoe-rail arc monitoring as a trigger signal to trigger the camera to work. ;

The in-vehicle equipment includes an analysis server and an optical fiber analyzer. The geometric parameter detection of the contact rail, the video monitoring of the relationship between the shoe rail, the current detection, and the monitoring of the arcing of the shoe rail are connected to the analysis server through a network cable. The rail contact pressure monitoring is connected to an optical fiber analyzer through a network cable, and the optical fiber analyzer is connected and outputs an analysis signal to an analysis server.

The ground monitoring terminal includes a server, a display, and a cabinet.

When the system is working, the 2D laser displacement sensor obtains the contour information of the receiving surface of the contact rail through the visual imaging model;

The high-definition camera takes real-time pictures of the operation of the boot rail. When an abnormality is detected on the contact rail, the captured pictures are analyzed, and combined with the image scanned by the laser, an alarm is issued for the abnormality of the contact rail.

The 2D laser displacement sensor obtains the vibration signal of the vehicle body vibration compensation module, and uses the vibration signal as a compensation value for correcting the error of the vehicle's running attitude.

3. The boot rail online monitoring device of the straddle-type monorail system of the present invention, through daily online real-time monitoring, grasps the fault information at the first time, analyzes the cause of the fault, locates the fault point in time and takes necessary measures to improve the flow quality of the boot rail and save operation cost and ensure vehicle safety.

Description of drawings

The following is a brief description of the content expressed in each accompanying drawing in the description of the present invention and the marks in the figure:

Figure 1-3 is a schematic structural diagram of a straddle monorail shoe rail monitoring system;

Fig. 4 is a schematic block diagram of the straddle type monorail shoe rail monitoring system;

The marks in the above figures are: 1. 2D laser displacement sensor, 2. HD camera, 3. Current sensor, 4. Ultraviolet photoelectric sensor, 5. Acceleration sensor, 6. Pressure sensor, 7. 2D sensor mounting bracket, 8. Ultraviolet light sensor installation bracket, 9. Video surveillance installation bracket, 10. Current receiver, 11. Power supply rail, 12. Apron column.

Detailed ways

Referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention include the shape, structure, mutual position and connection relationship of each part, the function and working principle of each part, and the manufacturing process of the various components involved. And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

As shown in Figure 1, the boot rail online monitoring device of straddle-type monorail system consists of three parts: under-vehicle equipment, in-vehicle equipment, and ground monitoring terminal.

The underbody equipment is mainly composed of contact rail geometric parameter detection, vehicle body vibration compensation module, shoe-rail relationship video monitoring, current detection, shoe-rail arc monitoring, shoe-rail hard point monitoring, and shoe-rail contact pressure monitoring.

The in-vehicle equipment is mainly composed of an in-vehicle analysis server and an optical fiber analyzer.

The ground monitoring terminal is mainly composed of servers, monitors, and cabinets.

For the detection of the geometric parameters of the contact rail, the 2D laser displacement sensor 1 is used to obtain the contour information of the contact rail flow receiving surface through the visual imaging model. The principle is that the sensor emits a laser beam and irradiates another observation object, and the laser beam is reflected to the receiving port of the sensor, and the distance between the two objects can be calculated through the optical path angle and the laser propagation time. In order to improve the detection accuracy of the geometric parameters of the contact rail, cooperate with the vehicle body vibration compensation module to correct the error caused by the vehicle's running attitude, making it closer to the static real value, thereby improving the detection accuracy.

The video monitoring of boot-rail relationship uses high-definition cameras 2 to take real-time shots of the operation of the boot-rail, and stores the video on the storage device of the vehicle. The system reserves a video download interface to facilitate downloading of images and videos. When an abnormality of the contact rail is detected, the video of the contact rail of this segment is transmitted to the system interface. The system automatically analyzes the captured pictures and combines the images scanned by the laser to give an alarm for the abnormality of the contact rail.

The current monitoring module is used to collect the traction current of the vehicle. The traction current adopts the open current sensor 3 and uses the Hall effect principle to detect and record the traction current value in real time.

Shoe rail arcing monitoring, using a 200HZ high-speed ultraviolet camera to achieve high-precision detection of rail shoe arcing, which can not only complete the detection of arc light, but also avoid the interference of sunlight. At the same time, the signal from the sensor is used to trigger the monitoring camera to accurately capture the arc. The arcing wavelength range between the contact rail and the receiving shoe is 323-329nm or 220-225nm. According to the requirements of the European standard EN50317, only the arcing with a duration of more than 5ms is considered for detection. In addition, with the current monitoring module installed on the main line of the receiving shoe, the current of the receiving shoe can be obtained when arcing occurs, and the time when the train current value exceeds 30% of the nominal value can be counted, and the arcing rate and single The time duration of the secondary arc.

Hard point monitoring of the shoe rail, the hard point of the shoe rail will cause the current collector 10 to collide, resulting in arcing and increased local mechanical wear of the shoe rail, accelerating the electrochemical corrosion of the current receiving surface of the contact rail, and affecting the quality of current intake. The shoe rail hard point monitoring module is composed of a hard point acquisition acceleration sensor 5, a pressure hard point acquisition circuit board, a power supply unit, and a connecting cable, and is installed on the current receiver 10 support rod for measuring impact acceleration. At the same time, a photoelectric conversion module is added to convert the electrical signal collected by the accelerometer into an optical signal, and transmit the signal to the data processing end through optical fiber.

Shoe-rail contact pressure monitoring. The shoe-rail contact force is a key factor affecting the shoe-rail fit. The present invention proposes the following three measurement schemes:

1. By adding a pressure measuring element between the springs of the current receiver 10, measuring the spring tension, establishing a database corresponding to the spring tension and the shoe rail pressure, and reflecting the shoe rail pressure in real time;

2. Paste strain gauges on the metal plate connected to the carbon slide, and reflect the shoe rail pressure by collecting strain data;

3. To monitor the contact force through the pressure sensor 6 installed on the collector shoe, the skateboard bracket needs to be modified, and the same force sensors are installed on both sides of the skateboard through the additional tooling.

Through the photoelectric conversion module, the high-voltage side acquisition end and the low-voltage side receiving end use optical fiber for isolated transmission, convert the electrical signal received by the sensor into an optical signal, and transmit the signal to the data processing end through optical fiber.

The in-vehicle analysis server realizes the storage, comparison, analysis and judgment of the collected shoe rail information. When abnormal data occurs, it can automatically analyze the fault degree and fault level, and realize the monitoring of the geometric parameters of the contact rail, high-definition video monitoring, current monitoring, and shoe rail monitoring. Rail arcing detection, shoe rail pressure monitoring, system positioning function, train-to-ground wireless transmission, offline detection function, fault alarm function, fault upload function, fault analysis, data statistical analysis and other system management functions. It also integrates the power supply of the equipment in this system, and has the function of connecting with PIS and TCMS systems.

The ground monitoring terminal consists of a high-performance server and a display, which is used to store, analyze and calculate the historical data of the in-vehicle analysis server, and has a self-learning function. The system mainly outputs the monitoring results of the in-vehicle analysis server to the ground server through the PIS system, and the ground expert system conducts statistical analysis of multiple driving measurement data, and forms an analysis report, including waveform and data comparison, to achieve the security of historical monitoring data Storage, analysis and calculation for early prevention and protection.

The installation structure of the straddle-mounted monorail shoe-rail monitoring system is shown in Figure 1-3, in which the 2D laser displacement sensor 1 is installed on the apron column 12 through the 2D sensor installation bracket 7, and the power supply rail 11 receives the current through the visual imaging model surface profile information; the ultraviolet photoelectric sensor 4 is installed on the apron column 12 through the ultraviolet photoelectric sensor 4 mounting bracket to accurately capture the arc; the video monitoring module is installed on the apron column 12 through the video monitoring mounting bracket 9; the current sensor 3 is installed Current sampling is carried out on the high-voltage bus of the current collector 10; the accelerometer is installed on the connecting arm of the current collector 10 to detect the impact acceleration; the pressure sensor 6 is installed between the slide plate and the metal bracket of the current collector 10 to collect the pressure between the shoe rails .

The shoe-rail online monitoring realizes real-time monitoring of contact rail geometric parameters, shoe-rail relationship video, current, shoe-rail arcing, shoe-rail hard point, shoe-rail contact pressure, fault alarm, and location can be found without returning to the warehouse for inspection Failure, good timeliness. It makes up for the cycle problem of manual inspection, saves time and effort, and has high accuracy. Using the system's data statistical analysis function, targeted maintenance and low maintenance costs. Deal with various problems detected during operation in a timely manner to avoid larger failures. Checking the shoe rail after outage cannot fully reflect the real state of the operation, but online monitoring can grasp the real state of the shoe rail during operation. The long-term failures can be predicted through the accumulated sample data.

The present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods, as long as various insubstantial improvements are adopted in the method concept and technical solutions of the present invention, or there is no improvement Directly applying the conception and technical solutions of the present invention to other occasions falls within the protection scope of the present invention.

Claims (10)

1. A straddle-type monorail boot rail monitoring system, characterized in that: the system includes equipment at the bottom of the vehicle, equipment in the vehicle, and a ground monitoring terminal, and the equipment at the bottom of the vehicle is provided with a monitoring system installed at the bottom of the vehicle for monitoring the monorail shoe rail. The monitoring mechanism connects and outputs monitoring signals to the in-vehicle equipment, and the in-vehicle equipment transmits the obtained monitoring signals to the ground monitoring terminal through the wireless network. 2. The straddle-type monorail boot-rail monitoring system according to claim 1, characterized in that: the vehicle bottom equipment includes contact rail geometric parameter detection, vehicle body vibration compensation module, shoe-rail relationship video monitoring, current detection, shoe Rail arc monitoring, shoe rail hard point monitoring, shoe rail contact pressure monitoring. 3. The straddle type monorail shoe rail monitoring system according to claim 1, characterized in that: The geometric parameter detection of the contact rail is a 2D laser displacement sensor; The vehicle body vibration compensation module is fixed on the geometric parameter detection of the contact rail, and transmits the collected vibration signal to the geometric parameter detection of the contact rail; The video monitoring of the shoe-rail relationship is a high-definition camera for real-time shooting of the running conditions of the shoe-rail; The current detection is an open current sensor for collecting vehicle traction current; The shoe rail arc monitoring is an ultraviolet photoelectric sensor equipped with an ultraviolet lens and an ultraviolet filter; The hard point monitoring of the shoe rail is a module fixed on the support rod of the current collector, and the module is provided with an acceleration sensor for collecting hard point acceleration, an acquisition circuit board connected to the acceleration sensor, and a power supply unit for power supply; The shoe-rail contact pressure monitoring is a load cell installed between the springs of the current collector, or a strain gauge attached to a metal plate connected with a carbon slide, or a pressure sensor installed on a collector shoe. 4. The straddle type monorail shoe rail monitoring system according to claim 3, characterized in that: The 2D laser displacement sensor is installed on the skirt board column through the 2D sensor mounting bracket; The video high-definition camera is installed on the skirt board column through the video monitoring installation bracket; The ultraviolet photoelectric sensor is installed on the apron column through the ultraviolet photoelectric sensor mounting bracket to accurately capture the arc; The current sensor is installed on the high-voltage bus of the current collector to perform current sampling; The acceleration sensor is installed on the connecting arm of the current collector for detecting impact acceleration; The pressure sensor is installed between the current collector slide plate and the metal bracket to collect the pressure between the shoe rails. 5. The straddle-type monorail shoe track monitoring system according to claim 3 or 4, characterized in that: the high-definition camera is connected to a storage device of the vehicle, and the shooting information is stored on the storage device, and the storage device presets There is a download interface. 6. The straddle-type monorail shoe-rail monitoring system according to claim 5, characterized in that: the shoe-rail arc monitoring is equipped with a sensor for collecting current signals between the contact rail and the receiving shoe, and the sensor is connected to the shoe Rail arcing monitoring and the induction signal is sent to the shoe rail arcing monitoring as a trigger signal to trigger the camera work. 7. The straddle-type monorail boot-rail monitoring system according to claim 6, characterized in that: said in-vehicle equipment includes an analysis server and an optical fiber analyzer, said contact rail geometric parameter detection, shoe-rail relationship video monitoring, current The detection and shoe rail arcing monitoring are connected to the analysis server through a network cable, and the shoe rail hard point monitoring and shoe rail contact pressure monitoring are connected to an optical fiber analyzer through a network cable, and the optical fiber analyzer is connected and outputs an analysis signal to the analysis server. 8. The straddle-type monorail shoe-rail monitoring system according to claim 7, wherein the ground monitoring terminal includes a server, a display, and a cabinet. 9. The control method based on any one of claims 1-8, wherein the straddle type monorail shoe rail monitoring system is characterized in that: when the system is working, the 2D laser displacement sensor obtains the contact rail flow receiving surface profile information through the visual imaging model; The high-definition camera takes real-time pictures of the operation of the boot rail. When an abnormality is detected on the contact rail, the captured pictures are analyzed, and combined with the image scanned by the laser, an alarm is issued for the abnormality of the contact rail. 10. The control method according to claim 9, wherein the 2D laser displacement sensor obtains the vibration signal of the vehicle body vibration compensation module, and uses the vibration signal as a compensation value for correcting the error of the vehicle's running posture.

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