Wireless transmission module for railway wagon loading state monitoring system

Abstract

The utility model relates to a wireless transmission module for a railway wagon loading state monitoring system, which comprises a support and a monitoring device arranged on the support, the monitoring device comprises a camera and a plurality of distance measuring sensors, the support comprises a cross beam and supporting legs, the supporting legs are respectively arranged on two sides of a rail, the cross beam is fixedly arranged at the top ends of the two supporting legs, and the cross beam is of a linear structure. A camera and a plurality of distance measuring sensors are arranged on the bottom surface of the cross beam, the output ends of the distance measuring sensors are connected with a conversion circuit, the conversion circuit is connected with a main control module, and the main control module is in communication connection with the camera; the master control module is provided with a wireless communication module and is connected with an upper computer through the wireless communication module. According to the utility model, the conversion circuit is arranged to collect detection signals of the plurality of distance measuring sensors, the main control module is arranged to provide a hardware basis for processing a plurality of groups of detection data, the main control module is in communication connection with the camera, and the main control module is provided with the wireless communication module to complete wireless transmission of the detection data.

Description

Technical Field

[0001] The utility model relates to the technical field of railway transportation monitoring, in particular to a wireless transmission module for a railway freight car loading status monitoring system. Background Art

[0002] After loading, freight trains need to check their loading status to avoid overloading and causing transportation accidents. Inspection items include over-width inspection and over-height inspection. Previous inspections required manual measurement with tools such as tape measures and bamboo poles. Due to the low efficiency of manual inspection, with the development of automated equipment, the existing inspection method is to set up multiple sets of distance measuring sensors on the gantry to detect the type of freight train, or to set up pan-tilt equipment next to the track for inspection. Due to the large number of freight trains and the fact that multiple freight trains will run at the same time, there are many sensors used for inspection. The sensor's detection parameters ultimately need to be uploaded to the host computer, and many communication cables need to be set up on site, causing inconvenience in maintenance and handling.

[0003] Therefore, it is urgent to design a wireless communication device to upload the detection parameters of multiple detection sensors through wireless transmission technology. Summary of the invention

[0004] In order to solve the problem of inconvenience in cable installation and maintenance when the existing over-limit sensor is transmitted through cables, the utility model proposes a wireless transmission module for a railway freight car loading status monitoring system, a conversion circuit is set to collect detection signals of multiple ranging sensors, a main control module is set to provide a hardware basis for processing multiple groups of detection data, the main control module is connected to the camera for communication, and the main control module is provided with a wireless communication module to complete the wireless transmission of the detection data.

[0005] In order to achieve the above-mentioned purpose, a wireless transmission module for a railway freight car loading status monitoring system includes a bracket and a monitoring device arranged on the bracket, the monitoring device includes a camera and a plurality of distance measuring sensors, the bracket includes a crossbeam and legs, the legs are arranged on both sides of the rail, the tops of the two legs are fixedly provided with a crossbeam, the crossbeam is a straight-line structure, the bottom surface of the crossbeam is provided with a camera and a plurality of distance measuring sensors, the output ends of the plurality of distance measuring sensors are connected to a conversion circuit, the conversion circuit is connected to a main control module, and the main control module is connected to the camera for communication;

[0006] The main control module is provided with a wireless communication module, and the main control module is connected to a host computer via the wireless communication module.

[0007] The embedded system has a simple circuit structure, low cost and easy configuration. It realizes the centralized collection of detection signals of multiple ranging sensors and provides a hardware foundation for the wireless transmission of detection parameters.

[0008] Furthermore, the main control module includes an MCU chip, the conversion circuit includes a filter circuit and an AD conversion chip, the input end of the filter circuit is connected to the output end of the ranging sensor, and the output end of the filter circuit is connected to the AD conversion chip;

[0009] The AD conversion chip is connected to the MCU chip via UART serial port communication;

[0010] The output end of the MCU chip is connected to the control end of the distance measuring sensor.

[0011] A filtering circuit is set up to reduce transmission interference, and signal conversion is realized through an AD conversion chip to complete the reception and processing of detection signals of multiple ranging sensors.

[0012] Furthermore, the distance measuring sensor includes one or more combinations of ultrasonic distance measuring sensors, laser distance measuring sensors, and inductive distance measuring sensors.

[0013] Furthermore, the main control module also includes a storage module, the MCU chip is communicatively connected to the storage module, the camera and the MCU chip are both provided with an RS232 interface module, and the MCU chip is communicatively connected to the camera via an RS232 data line.

[0014] Realizing the transfer of camera data provides the hardware basis for uploading video information.

[0015] Furthermore, the wireless communication module includes one or more combinations of a WIFI module, a Bluetooth module, a Zigbee module and a LoRa module.

[0016] Furthermore, the camera and the ranging sensor are both provided with a shell, the shell is a cylindrical structure with an open lower end and a hollow interior, the open position of the shell is detachably connected with a bottom cover made of a transparent material, and the camera and the ranging sensor are limitedly arranged inside the shell through the bottom cover;

[0017] Two side panels are arranged outside the shell, both of which are square panels. The side panels are tangent to the circumference of the shell, and the side panels and the shell are an integrated structure. The two side panels are arranged in parallel, and bolt holes are opened correspondingly in the two side panels. The side panels are fixed to the crossbeam by bolts.

[0018] The shell is provided to facilitate fixation with the crossbeam and to protect the camera and the distance measuring sensor.

[0019] Through the above technical solution, the beneficial effects of the utility model are:

[0020] The utility model realizes the wireless transmission of ultra-wide detection parameters and ultra-high detection parameters. A main control module is set. On the one hand, the main control module is connected to multiple distance measuring sensors through a conversion circuit to realize the reception of detection signals of multiple distance measuring sensors. On the other hand, it is connected to the camera for communication to receive the video information shot by the camera, thereby improving the current situation of directly connecting to the host computer through a long-distance cable connection to complete data transmission. The main control module is provided with a wireless communication module, and the main control module is connected to the wireless communication module for communication to realize long-distance wireless communication between the main control module and the host computer. An embedded system is adopted, and the circuit structure is simple, the cost is low, and it is easy to configure. The centralized collection of detection signals of multiple distance measuring sensors is realized, and the hardware foundation is provided for the wireless transmission of detection parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the structural schematic diagrams of a wireless transmission module for a railway freight car loading status monitoring system of the utility model;

[0022] Figure 2 This is the second structural schematic diagram of a wireless transmission module for a railway freight car loading status monitoring system of the utility model;

[0023] Figure 3 The utility model discloses an electrical principle diagram of a wireless transmission module for a railway freight car loading status monitoring system.

[0024] Figure numbers: 1 is a camera, 2 is a distance sensor, 3 is a beam, 4 is a leg, 5 is a main control module, 6 is a wireless communication module, 7 is a conversion circuit, 8 is a storage module, 9 is a housing, 10 is a bottom cover, and 11 is a side panel. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0026] Example 1

[0027] like Figures 1 to 3 As shown, a wireless transmission module for a railway freight car loading status monitoring system comprises a bracket and a monitoring device arranged on the bracket, the monitoring device comprises a camera 1 and a plurality of distance measuring sensors 2, the bracket comprises a crossbeam 3 and legs 4, the legs 4 are arranged on both sides of the rail, the tops of the two legs 4 are fixedly provided with crossbeams 3, the crossbeam 3 is a straight-line structure, the bottom surface of the crossbeam 3 is provided with a camera 1 and a plurality of distance measuring sensors 2, the output ends of the plurality of distance measuring sensors 2 are connected with a conversion circuit 7, the conversion circuit 7 is connected with a main control module 5, and the main control module 5 is connected to the camera 1 for communication;

[0028] The main control module 5 is provided with a wireless communication module 6 .

[0029] The main control module 5 includes an MCU chip, and the conversion circuit 7 includes a filter circuit and an AD conversion chip. The input end of the filter circuit is connected to the output end of the distance measuring sensor 2, and the output end of the filter circuit is connected to the AD conversion chip;

[0030] The AD conversion chip is connected to the MCU chip via UART serial port communication;

[0031] The output end of the MCU chip is connected to the control end of the distance measuring sensor 2 .

[0032] The MCU chip uses the STM32 microcontroller. The AD conversion chip uses the ADC0808 chip.

[0033] The distance measuring sensor 2 includes one or more combinations of ultrasonic distance measuring sensors, laser distance measuring sensors, and inductive distance measuring sensors.

[0034] In this embodiment, the distance measuring sensor 2 is a laser distance measuring sensor.

[0035] The main control module 5 also includes a storage module 8, the MCU chip is in communication with the storage module 8, the camera 1 and the MCU chip are both provided with an RS232 interface module, and the MCU chip is in communication with the camera 1 via an RS232 data line. The storage module 8 is specifically an EMI502NL16VM chip, and the FSMC pin of the MCU chip is in communication with the EMI502NL16VM chip.

[0036] The wireless communication module 6 includes one or more combinations of a WIFI module, a Bluetooth module, a Zigbee module and a LoRa module.

[0037] In this embodiment, the wireless communication module 6 uses a LoRa module, specifically an E28-2G4M12S chip, and the E28-2G4M12S chip communicates with the MCU chip through the SPI serial port.

[0038] The camera 1 and the distance sensor 2 are both provided with a housing 9, and the housing 9 is a cylindrical structure with an open lower end and a hollow interior. The open position of the housing 9 is detachably connected with a bottom cover 10 made of a transparent material, and the camera 1 and the distance sensor 2 are limitedly arranged inside the housing 9 through the bottom cover 10;

[0039] Two side panels 11 are arranged outside the shell 9, and both of the side panels 11 are square panels. The side panels 11 are tangent to the circumference of the shell 9, and the side panels 11 and the shell 9 are an integrated structure. The two side panels 11 are arranged in parallel, and bolt holes are opened correspondingly in the two side panels 11. The side panels 11 are fixed to the crossbeam by bolts.

[0040] In this embodiment, six ranging sensors 2, one camera 1 and seven housings 9 are arranged, and the seven housings 9 are arranged equidistantly and fixed to the crossbeam 3 by bolts arranged on the side plate 11. The detection parameters of the two ranging sensors 2 near the legs 4 are used to determine whether the width of the freight train exceeds the standard. The principle is: if the width of the freight train is qualified, the detection parameters of the two ranging sensors 2 are the distance from the rail surface to the detection point. If the width of the freight train exceeds the standard, the two ranging sensors 2 directly detect the distance from the top surface of the freight train to the detection point, so it is judged that the width of the freight train exceeds the standard.

[0041] The remaining four distance measuring sensors 2 are arranged on both sides of the camera 1 , and the detection parameters of the four distance measuring sensors 2 are used to determine whether the height of the freight train exceeds the standard.

[0042] The camera 1 is arranged in the middle of the crossbeam 3 .

[0043] When a freight train passes by the bracket, multiple distance sensors 2 work, and multiple detection parameters are transmitted from the AD conversion chip to the MCU chip through the filter circuit. The MCU chip transmits the processed data to the host computer wirelessly through the LoRa module.

[0044] At the same time, camera 1 captures video data of a freight train passing by, and the camera transmits the video data to the MCU chip, which then wirelessly transmits the video data to the host computer via the LoRa module.

[0045] Staff can remotely monitor the inspection parameters of freight trains on multiple tracks on the host computer, which facilitates data collation and improves the efficiency of over-limit inspection operations.

[0046] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A wireless transmission module for a railway freight car loading status monitoring system, comprising a bracket and a monitoring device arranged on the bracket, the monitoring device comprising a camera (1) and a plurality of distance measuring sensors (2), the bracket comprising a crossbeam (3) and legs (4), the legs (4) being arranged on both sides of a rail, the tops of the two legs (4) being fixedly provided with crossbeams (3), the crossbeam (3) being a straight-line structure, the bottom surface of the crossbeam (3) being provided with a camera (1) and a plurality of distance measuring sensors (2), characterized in that: The output ends of the plurality of distance measuring sensors (2) are connected to a conversion circuit (7), the conversion circuit (7) is connected to a main control module (5), and the main control module (5) is communicatively connected to the camera (1); The main control module (5) is provided with a wireless communication module (6).

2. A wireless transmission module for a railway freight car loading status monitoring system according to claim 1, characterized in that: The main control module (5) comprises an MCU chip, the conversion circuit (7) comprises a filter circuit and an AD conversion chip, the input end of the filter circuit is connected to the output end of the distance measuring sensor (2), and the output end of the filter circuit is connected to the AD conversion chip; The AD conversion chip is connected to the MCU chip via UART serial port communication; The output end of the MCU chip is connected to the control end of the distance measuring sensor (2).

3. The wireless transmission module for a railway freight car loading status monitoring system according to claim 1, characterized in that: The distance measuring sensor (2) comprises one or more combinations of an ultrasonic distance measuring sensor, a laser distance measuring sensor, and an inductive distance measuring sensor.

4. The wireless transmission module for a railway freight car loading status monitoring system according to claim 2, characterized in that: The main control module (5) further comprises a storage module (8), the MCU chip is communicatively connected to the storage module (8), the camera (1) and the MCU chip are both provided with an RS232 interface module, and the MCU chip is communicatively connected to the camera (1) via an RS232 data line.

5. The wireless transmission module for a railway freight car loading status monitoring system according to claim 1, characterized in that: The wireless communication module (6) comprises one or more combinations of a WIFI module, a Bluetooth module, a Zigbee module and a LoRa module.

6. The wireless transmission module for a railway freight car loading status monitoring system according to claim 1, characterized in that: The camera (1) and the distance measuring sensor (2) are both provided with a housing (9), the housing (9) being a cylindrical structure with an open lower end and a hollow interior, the open position of the housing (9) being detachably connected to a bottom cover (10) made of a transparent material, the camera (1) and the distance measuring sensor (2) being limitedly arranged inside the housing (9) by the bottom cover (10); Two side plates (11) are arranged outside the shell (9), and both of the side plates (11) are square plates. The side plates (11) are tangent to the circumference of the shell (9), and the side plates (11) and the shell (9) are an integrated structure. The two side plates (11) are arranged in parallel, and bolt holes are correspondingly opened on the two side plates (11). The side plates (11) are fixed to the crossbeam (3) by bolts.

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