Axle counting device

Abstract

The utility model discloses an axle counting device which comprises a sensing part, the sensing part comprises a connecting body and a reflective photoelectric sensor, the light emitting direction of the reflective photoelectric sensor points to a train wheel, and one end of the connecting body is fixedly connected with the end, away from the light emitting part, of the reflective photoelectric sensor; the fixing part is used for fixedly connecting one end, far away from the reflective photoelectric sensor, of the connecting body with the inner side surface of the track; a controller; and the data processing module is used for processing a signal received by the reflective photoelectric sensor. Whether the section is occupied by the train or not is judged by detecting the number of the wheels when the train passes through the rail section through the sensing device, and therefore accurate information is provided for train scheduling.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit technology, in particular to an axle counting device. BACKGROUND

[0002] Axle counting system is an important trackside basic equipment system in rail transit, which is used to determine whether the track section with axle counting is occupied by a train. The existing axle counting device is mainly based on electromagnetic sensor. The existing axle counting device includes the following main parts: magnetic head (track sensor): the magnetic head is installed on both sides of the track to detect the change of magnetic field generated when the axle passes. It usually includes a pair of magnetic heads, one is a transmitting magnetic head and the other is a receiving magnetic head. Electronic evaluation unit (EAK): the EAK is responsible for processing signals from the magnetic head, evaluating the number of axles passing, and sending information to indoor equipment. Azimuth counting equipment (ACE): the ACE is the core equipment for processing all information, which receives data from the EAK, calculates the occupancy state of the track section, and sends the information to the interlocking system or other control center.

[0003] However, the existing axle counting device may be sensitive to environmental changes, such as temperature changes, humidity, corrosion, etc., which may affect its long-term performance, especially in extreme weather conditions such as high temperature, low temperature, humidity, etc. The electromagnetic sensor may not be stable enough, which may cause deviation in the sensing and recognition of train wheels. In addition, once the existing axle counting device is installed, it is difficult to change the configuration or expand the function, and it is difficult to remove or adjust the position. CONTENT OF THE INVENTION

[0004] The main purpose of the present application is to provide an axle counting device, which is designed to accurately detect the number of train wheels passing through the track section by using a reflective photoelectric sensor, to determine whether the section is occupied by a train. It is convenient to show the train running information to the staff, and it is also convenient to disassemble or move, thereby adapting to different types of train wheel specifications.

[0005] To achieve the above purpose, the present application provides an axle counting device, which comprises:

[0006] A sensing part, the sensing part comprises a connecting body and a reflective photoelectric sensor, the light emission direction of the reflective photoelectric sensor points to the train wheel, one end of the connecting body is fixedly connected with one end of the reflective photoelectric sensor away from the light emission part, and the sensing part is arranged at both ends of the track section.

[0007] A fixing part is arranged to fix the end of the connecting body, which is away from the reflective photoelectric sensor, to the inner side of the rail;

[0008] A controller is arranged to control the axle counting device;

[0009] A data processing module is electrically connected to the controller and the reflective photoelectric sensor respectively, and is arranged to process the signal received by the reflective photoelectric sensor.

[0010] Optionally, the connecting body comprises a first rod, a rotating joint and a second rod, the first rod is a telescopic rod, one end of the first rod is fixed to the inner side of the rail, the other end of the first rod is connected to one end of the second rod through the rotating joint, and the other end of the second rod is fixed to the end of the reflective photoelectric sensor, which is away from the light emitting part.

[0011] Optionally, a first electric cylinder is further arranged, which is electrically connected to the controller and is arranged to drive the telescopic rod to extend or retract.

[0012] Optionally, a second electric cylinder is further arranged, which is electrically connected to the controller and is arranged to drive the rotating joint to rotate.

[0013] Optionally, the fixing part comprises a first fixing plate and a second fixing plate, one side of the first fixing plate is fixed to the end of the connecting body, which is away from the reflective photoelectric sensor, the other side of the first fixing plate is fixed to the inner side of the rail, the second fixing plate is arranged on the outer side of the rail, the position of the second fixing plate corresponds to the position of the first fixing plate, and the second fixing plate is connected to the first fixing plate through a fixing bolt.

[0014] Optionally, a data storage module is further arranged, which is electrically connected to the controller and is arranged to store the data corresponding to the signal received by the reflective photoelectric sensor.

[0015] Optionally, a data transmission module is further arranged, which is electrically connected to the controller and is arranged to upload the data corresponding to the signal received by the reflective photoelectric sensor to a cloud server.

[0016] Optionally, a prompt light is further arranged, which is arranged on the surface of the second fixing plate, is electrically connected to the controller, and is arranged to prompt when the train enters or exits the rail section.

[0017] Optionally, the display screen is arranged on the surface of the second fixed plate, the display screen is arranged on the surface of the monitor body, the display screen is electrically connected with the controller, and the display screen is used for displaying information of train entering or train leaving the track section.

[0018] Optionally, the power supply and the solar panel are further included, the power supply is electrically connected with the solar panel through the wire, and the power supply is used for supplying power to the controller, the reflective photoelectric sensor and the data processing module.

[0019] The axle counting device provided by the embodiment of the application can accurately detect the number of wheels of a train passing through a track section by using the reflective photoelectric sensor, so as to determine whether the track section is occupied by the train, facilitate the display of train running information to the staff, facilitate disassembly or movement, and further adapt to different wheel specifications of different types of trains. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a first structural schematic view of the axle counting device of the embodiment of the application;

[0021] Figure 2 FIG. 2 is a second structural schematic view of the axle counting device of the embodiment of the application;

[0022] Figure 3 FIG. 3 is a surface structure schematic view of the second fixed plate of the embodiment of the application;

[0023] Figure 4 FIG. 4 is a circuit principle block diagram of the embodiment of the application;

[0024] FIG. 1 is a first structural schematic view of the axle counting device of the embodiment of the application;

[0025] The implementation, functional features and advantages of the application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0027] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications will also change accordingly.

[0028] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In addition, if the present application embodiments involve "first", "second" and the like, the "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that ordinary skilled persons can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0030] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the present application provides a wheel counting device, comprising the following parts:

[0031] The sensing part comprises a connecting body 3 and a reflective photoelectric sensor 4, the light emission direction of the reflective photoelectric sensor 4 points to the train wheel 1, one end of the connecting body 3 is fixedly connected to one end of the reflective photoelectric sensor 4 away from the light emission part, and the sensing part is arranged at both ends of the track 2 section; The reflective photoelectric sensor 4 (Reflective Photoelectric Sensor) is characterized in that the emission part and the receiving part are integrated in the same device, when the emitted light is reflected back to the sensor after encountering an object, the receiver inside the sensor can detect the reflected signal, and the emission part, the receiving part and the working principle of the reflective photoelectric sensor 4 are as follows:

[0032] Emission section: built-in light source (usually infrared LED or other types of light source), continuous or pulsed emission of light rays;

[0033] Receiving section: photodetector (such as photodiode or phototransistor) within the same device, used to receive the reflected light rays;

[0034] Working principle: when the light rays emitted by the sensor strike the surface of an object, they are reflected back to the sensor; if the intensity of the reflected light rays is large enough to be detected by the receiver, it is considered that the object exists; if there is not enough reflected light, it is considered that there is no object in front or that the object has low reflectivity.

[0035] The current common reflective photoelectric sensor 4 includes the following types:

[0036] PT1206 light-controlled photosensitive diode: the sensor is usually used for applications that require a small volume solution, such as hand-held switches, with strong sensitivity characteristics, suitable for use in high-precision detection scenarios;

[0037] ITR20001 / T reflective photoelectric sensor 4: integrated infrared pair tube for emission / reception, suitable for applications that require compact design, usually used for close-range detection, with a sensing distance of about 1-10 mm;

[0038] PS124TL1 reflective photoelectric sensor 4: a reflective photoelectric sensor 4 produced by KODENSHI, suitable for various industrial applications;

[0039] Otto Niessl photoelectric sensor: provides various types of reflective photoelectric sensors 4, including: diffuse reflection type: suitable for scenarios that require a wide detection angle, but the detection distance is relatively short; narrow-beam reflection type (BR series): concentrated light beam, suitable for detecting objects in narrow spaces; limited-distance reflection type: detects objects within a limited distance, unaffected by the background; BGS (background suppression) reflection type: uses the principle of triangulation to set the detection range, only receives the reflected light rays from the desired area, unaffected by the background;

[0040] Nanjing Debao DOB-FS30SH-ZPKY mirror reflective photoelectric sensor 4: suitable for applications that require diffuse reflection or reflective plate detection, with a sensing distance of 0-0.3 meters / 2 meters / 5 meters, fast response time;

[0041] Laser small-spot reflective photoelectric sensor 4: this sensor has the characteristics of high-precision detection, with a detection distance of up to 300 mm and supports distance adjustment, suitable for detecting small objects and parts.

[0042] The axle counting device comprises a fixed part for fixedly connecting one end of the connecting body 3 away from the reflective photoelectric sensor 4 with the inner side surface of the track 2.

[0043] The axle counting device comprises a controller for controlling the axle counting device.

[0044] Optionally, the controller can be one of the following controllers:

[0045] Programmable Logic Controller (PLC): widely used in industrial automation, such as production line control, packaging equipment, robot control, etc., characterized by high flexibility, complex control logic can be realized through programming; small-sized PLC is particularly suitable for space-limited occasions;

[0046] Motion Controller: used for controlling servo motors, stepper motors, etc., suitable for CNC machine tools, 3D printing, precision assembly, etc., characterized by providing high-precision position control, supporting multi-axis coordinated motion, and some also having trajectory planning function.

[0047] The axle counting device comprises a data processing module electrically connected with the controller and the reflective photoelectric sensor 4 respectively, and the data processing module is used for processing the signals received by the reflective photoelectric sensor 4.

[0048] Optionally, the data processing module can be any of the following two data processing modules:

[0049] Special signal processing module:

[0050] Use: suitable for applications requiring advanced signal processing, such as noise filtering, signal enhancement, etc.;

[0051] Features: may contain a special signal processing chip to improve the quality of sensor signals;

[0052] Example: TI's MSP430 series MCU with integrated signal processing function;

[0053] Analog Front End (AFE) module:

[0054] Use: suitable for applications requiring pre-processing of sensor signals;

[0055] Features: AFE module usually includes amplifiers, filters, etc., which can optimize the signal quality of sensor output.

[0056] For example, Figure 2As shown, the connecting body 3 comprises a first rod body 5, a rotating joint 6 and a second rod body 7, the first rod body 5 is a telescopic rod, one end of the first rod body 5 is fixedly connected with the inner side surface of the track 2, the other end of the first rod body 5 is connected with one end of the second rod body 7 through the rotating joint 6, and the other end of the second rod body 7 is fixedly connected with one end of the reflective photoelectric sensor 4 away from the light emitting part.

[0057] Optionally, the axle counting device further comprises a first electric cylinder, the first electric cylinder is electrically connected with the controller, and the first electric cylinder is used to drive the telescopic rod to realize telescopic movement.

[0058] Optionally, the axle counting device further comprises a second electric cylinder, the second electric cylinder is electrically connected with the controller, and the second electric cylinder is used to drive the rotating joint 6 to realize rotation.

[0059] Optionally, the first electric cylinder and the second electric cylinder can be a micro electric cylinder of THK, or a stepper motor with a screw rod or rack gear transmission of NEMA17 or smaller size, or a small servo motor (such as Maxon, Faulhaber) driven electric cylinder.

[0060] Optionally, the fixed part comprises a first fixed plate 8 and a second fixed plate 9, one side of the first fixed plate 8 is fixedly connected with one end of the connecting body 3 away from the reflective photoelectric sensor 4, the other side of the first fixed plate 8 is fixedly connected with the inner side surface of the track 2, the second fixed plate 9 is arranged on the outer side surface of the track 2, the position of the second fixed plate 9 corresponds to the position of the first fixed plate 8, and the second fixed plate 9 is connected with the first fixed plate 8 through a fixing bolt 12.

[0061] Optionally, the axle counting device further comprises a data storage module, the data storage module is electrically connected with the controller, and the data storage module is used to store data corresponding to the signal received by the reflective photoelectric sensor 4.

[0062] Optionally, the data storage module can be any one of the following storage modules:

[0063] SD / MMC / TF card module:

[0064] Application: widely used in data recording, image storage, etc.

[0065] Features: large capacity, easy to replace and expand, supports multiple capacity cards such as SD card, Micro SD card, etc.

[0066] Example: SD card storage module, such as the one provided by DFRobot, supports SPI interface and can be easily connected to the controller;

[0067] EEPROM module:

[0068] Purpose: Suitable for applications that require non-volatile storage, such as parameter setting, data backup, etc.

[0069] Features: Data can be saved after power failure, but the number of write operations is limited;

[0070] Example: AT24C02 external storage module, providing 256 bytes of storage space, suitable for small devices such as 51 single-chip microcomputers.

[0071] Optionally, the axle counting device further comprises a data transmission module, which is electrically connected to the controller, and the data transmission module is used to upload the data corresponding to the signals received by the reflective photoelectric sensor 4 to the cloud server.

[0072] Optionally, the data transmission module can be any of the following transmission modules:

[0073] Wi-Fi module:

[0074] Purpose: Suitable for applications that require internet connection, such as Internet of Things devices, remote monitoring systems, wireless printers, etc.

[0075] Features: Supports internet connection, can realize remote data transmission;

[0076] Examples: ESP8266 module, ESP32 module, etc.

[0077] Zigbee module:

[0078] Purpose: Suitable for applications that require low power consumption and multi-node network, such as smart home, industrial automation, etc.

[0079] Features: Low power consumption, low cost, supports large-scale network;

[0080] Examples: CC2530 module, ZBEE module, etc.

[0081] LoRa module:

[0082] Purpose: Suitable for applications that require long-distance, low-power communication, such as remote monitoring, agricultural automation, etc.

[0083] Features: Long-distance transmission, low power consumption;

[0084] Examples: SX1278 module, etc.

[0085] Optionally,Figure 3 As shown in the figure, the axle counting device further comprises a prompt lamp 10 arranged on the surface of the second fixed plate 9, the prompt lamp 10 is electrically connected with the controller, and the prompt lamp 10 is used for prompting when the train enters or exits the track 2 section.

[0086] Optionally, as shown in the figure, Figure 3 As shown in the figure, the axle counting device further comprises a display screen 11 arranged on the surface of the second fixed plate 9 and arranged on the surface of the monitor body, the display screen 11 is electrically connected with the controller, and the display screen 11 is used for displaying the information of the train entering or exiting the track 2 section.

[0087] Optionally, the axle counting device further comprises a power supply and a solar panel, the power supply is electrically connected with the solar panel through a wire, and the power supply is used for supplying power to the controller, the reflective photoelectric sensor 4 and the data processing module.

[0088] The application will be further described below through a specific embodiment:

[0089] As shown in the figure, Figure 2 , Figure 3 and Figure 4 The embodiment provides an axle counting device, which comprises:

[0090] The sensing part includes a connecting body 3 and a reflective photoelectric sensor 4, which is a ROHM super-mini VCSEL reflective photoelectric sensor 4 "RPR-0720". The reflective photoelectric sensor 4 is characterized by using a self-produced VCSEL (vertical cavity surface emitting laser), which has lower power consumption and better directivity than an LED, and is suitable for applications requiring high-precision detection. The light emission direction of the reflective photoelectric sensor 4 points to the train wheel 1. One end of the connecting body 3 is fixedly connected to the end of the reflective photoelectric sensor 4 away from the light emission part. The sensing part is arranged at both ends of the track 2 section. The connecting body 3 includes a first rod body 5, a rotating joint 6, and a second rod body 7. The first rod body 5 is a telescopic rod. One end of the first rod body 5 is fixedly connected to the inner side of the track 2. The other end of the first rod body 5 is connected to one end of the second rod body 7 through the rotating joint 6. The other end of the second rod body 7 is fixedly connected to the end of the reflective photoelectric sensor 4 away from the light emission part. The axle counting device further includes a first electric cylinder. The first electric cylinder is electrically connected to the controller. The first electric cylinder is used to drive the telescopic rod to extend or retract. The axle counting device further includes a second electric cylinder. The second electric cylinder is electrically connected to the controller. The second electric cylinder is used to drive the rotating joint 6 to rotate. The first electric cylinder is a micro servo cylinder, which is suitable for telescopic rods that require precise servo control. The second electric cylinder is a micro integrated rotary actuator, which is very suitable for micro rotating joints 6. Through the above arrangement of the connecting body 3, the position or pointing angle of the reflective photoelectric sensor 4 can be adjusted according to the size or position of the wheels 1 of different types of trains, so as to better receive the reflected signals returned by the passing trains.

[0091] The fixed part is used to fixedly connect one end of the connecting body 3 away from the reflective photoelectric sensor 4 to the inner side of the track 2. The fixed part includes a first fixed plate 8 and a second fixed plate 9. One side of the first fixed plate 8 is fixedly connected to one end of the connecting body 3 away from the reflective photoelectric sensor 4. The other side of the first fixed plate 8 is fixedly connected to the inner side of the track 2. The second fixed plate 9 is arranged on the outer side of the track 2. The position of the second fixed plate 9 corresponds to the position of the first fixed plate 8. The second fixed plate 9 is connected to the first fixed plate 8 through a fixed bolt 12.

[0092] The controller is used to control the axle counting device. The controller is a programmable logic controller (PLC).

[0093] A data processing module is electrically connected with the controller and the reflective photoelectric sensor 4 respectively, and is used for processing the signal received by the reflective photoelectric sensor 4. The data processing module is an analog front end (AFE) module.

[0094] A data storage module is electrically connected with the controller, and is used for storing the data corresponding to the signal received by the reflective photoelectric sensor 4. The data storage module is an EEPROM module.

[0095] A data transmission module is electrically connected with the controller, and is used for uploading the data corresponding to the signal received by the reflective photoelectric sensor 4 to a cloud server. The data transmission module is a LoRa module, and can meet the demand for long-distance and low-power consumption communication, such as remote monitoring of train operation sections in a train dispatching room.

[0096] A prompt lamp 10 is arranged on the surface of the second fixed plate 9, and is electrically connected with the controller. The prompt lamp 10 is used for prompting when a train enters or exits a track 2 section.

[0097] A display screen 11 is arranged on the surface of the second fixed plate 9, and is arranged on the surface of the monitor body. The display screen 11 is electrically connected with the controller, and is used for displaying the information of the train entering or exiting the track 2 section.

[0098] A power supply and a solar panel are electrically connected with each other through wires. The power supply is used for supplying power to the controller, the reflective photoelectric sensor 4 and the data processing module.

[0099] The embodiment of the present application can accurately detect the number of wheels 1 of the train passing through the track 2 section through the reflective photoelectric sensor 4, so as to determine whether the section is occupied by the train. The embodiment of the present application can facilitate the display of train running information to the staff, and is convenient to disassemble or move, and thus can adapt to different types of train wheel 1 specifications.

[0100] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is based on the content of the specification and drawings of the present application, is also included in the patent protection scope of the present application.

Claims

1. An axle counter apparatus, characterized by The utility model relates to a kind of axle counting device, including: Sensing part, the sensing part includes connecting body and reflective photoelectric sensor, the light emission direction of the reflective photoelectric sensor is directed to train wheel, one end of the connecting body is fixedly connected with the end of the reflective photoelectric sensor away from light emission part, and the sensing part is arranged at the both ends of track section; Fixed part, the fixed part is used to connect the end of the connecting body away from the reflective photoelectric sensor with the inner side of track; Controller, the controller is used to control the axle counting device; Data processing module, the data processing module is electrically connected with the controller and the reflective photoelectric sensor respectively, and the data processing module is used to process the signal received by the reflective photoelectric sensor.

2. The axle counter apparatus of claim 1 wherein, The connecting body includes first rod body, rotating joint and second rod body, the first rod body is telescopic rod, one end of the first rod body is fixedly connected with the inner side of track, the other end of the first rod body is connected with one end of the second rod body through the rotating joint, and the other end of the second rod body is fixedly connected with the end of the reflective photoelectric sensor away from light emission part.

3. The axle counter apparatus of claim 2 wherein, It also includes a first electric cylinder, the first electric cylinder is electrically connected with the controller, and the first electric cylinder is used to realize driving the telescopic rod to stretch out and draw back.

4. The axle counter apparatus of claim 2 wherein, It also includes a second electric cylinder, the second electric cylinder is electrically connected with the controller, and the second electric cylinder is used to realize driving the rotating joint to rotate.

5. The axle counter apparatus of claim 1 wherein, The fixed part includes first fixed plate and second fixed plate, one side of the first fixed plate is fixedly connected with the end of the connecting body away from the reflective photoelectric sensor, the other side of the first fixed plate is fixedly connected with the inner side of track, the second fixed plate is arranged on the outer side of track, the position of the second fixed plate corresponds to the position of the first fixed plate, and the second fixed plate is connected with the first fixed plate through fixed bolt.

6. The axle counter apparatus of claim 1 wherein, It also includes a data storage module, the data storage module is electrically connected with the controller, and the data storage module is used to store the data corresponding to the signal received by the reflective photoelectric sensor.

7. The axle counter apparatus of claim 1 wherein, It also includes a data transmission module, the data transmission module is electrically connected with the controller, and the data transmission module is used to upload the data corresponding to the signal received by the reflective photoelectric sensor to cloud server.

8. The axle counter apparatus of claim 5 wherein, It also includes a prompt light, the prompt light is arranged on the surface of the second fixed plate, the prompt light is electrically connected with the controller, and the prompt light is used to prompt when train enters or train exits track section.

9. The axle counter apparatus of claim 5 wherein, It also includes a display screen, the display screen is arranged on the surface of the second fixed plate, the display screen is electrically connected with the controller, and the display screen is used to display the information of train entering or train exiting track section.

10. The axle counter apparatus of claim 1 wherein, It also includes a power supply and a solar panel, the power supply is electrically connected with the solar panel through wire, and the power supply is used to power the controller, the reflective photoelectric sensor and the data processing module.

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