CN112572489A - Vehicle body acceleration monitoring device and system and 25t axle load aluminum alloy coal hopper car - Google Patents

Vehicle body acceleration monitoring device and system and 25t axle load aluminum alloy coal hopper car Download PDF

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Publication number
CN112572489A
CN112572489A CN202011481956.XA CN202011481956A CN112572489A CN 112572489 A CN112572489 A CN 112572489A CN 202011481956 A CN202011481956 A CN 202011481956A CN 112572489 A CN112572489 A CN 112572489A
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CN
China
Prior art keywords
vehicle body
acceleration sensor
mems
acceleration
control device
Prior art date
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Pending
Application number
CN202011481956.XA
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Chinese (zh)
Inventor
孙亚新
李文波
刘德朋
李玉丹
张宁
席东旭
赵峥
王立加
王洪昆
王文刚
王蒙
边志宏
丁颖
王萌
焦杨
马瑞峰
张俊林
赵天军
邵文东
于维
汪明栋
段仕会
韩俊峰
何健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Competition Industry Dassault Technology Co ltd
CRRC Qiqihar Rolling Stock Co Ltd
Shenhua Railway Equipment Co Ltd
Original Assignee
Beijing Competition Industry Dassault Technology Co ltd
CRRC Qiqihar Rolling Stock Co Ltd
Shenhua Railway Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Beijing Competition Industry Dassault Technology Co ltd, CRRC Qiqihar Rolling Stock Co Ltd, Shenhua Railway Equipment Co Ltd filed Critical Beijing Competition Industry Dassault Technology Co ltd
Priority to CN202011481956.XA priority Critical patent/CN112572489A/en
Publication of CN112572489A publication Critical patent/CN112572489A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D7/00—Hopper cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L15/00—Indicators provided on the vehicle or train for signalling purposes
    • B61L15/0018—Communication with or on the vehicle or train
    • B61L15/0027—Radio-based, e.g. using GSM-R
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P2015/0862—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with particular means being integrated into a MEMS accelerometer structure for providing particular additional functionalities to those of a spring mass system

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The application provides a vehicle body acceleration monitoring device, a vehicle body acceleration monitoring system and a 25t axle load aluminum alloy coal hopper car. The vehicle body acceleration monitoring device comprises a first MEMS acceleration sensor, a second MEMS acceleration sensor and a control device. The first MEMS acceleration sensor, the second MEMS acceleration sensor and the control device are arranged on one side, close to the bogie, of the vehicle body. The first MEMS acceleration sensor is used for detecting a first acceleration value of the vibration of the vehicle body in the first direction and determining whether to output a trigger signal according to the first acceleration value. The projection area of the bogie on the vehicle body covers the projection area of the first MEMS acceleration sensor and the second MEMS acceleration sensor on the vehicle body. The control device is electrically connected with the first MEMS acceleration sensor and the second MEMS acceleration sensor respectively. When the control device receives the trigger signal, the control device acquires a second acceleration value of the vehicle body vibrating in the first direction through the second MEMS acceleration sensor and outputs the second acceleration value.

Description

Vehicle body acceleration monitoring device and system and 25t axle load aluminum alloy coal hopper car
Technical Field
The application relates to the technical field of railway wagons, in particular to a wagon acceleration monitoring device, a wagon acceleration monitoring system and a 25t axle load aluminum alloy coal hopper wagon.
Background
The railway transportation has the characteristics of high efficiency and environmental protection, and the advantages of the railway transportation can be reflected more and more along with the development of the world economy. With the rapid development of world economy, the transportation of bulk goods such as abundant minerals, grains, chemical raw materials and the like creates a solid and stable material foundation for the long-term and efficient operation of world railway freight.
During the operation of the railway freight vehicle, the vibration condition of the railway freight vehicle needs to be checked. Currently, the detection of vibration conditions for railway freight vehicles is by checking the partial state of the vehicle by a human or 5T system (ground-to-vehicle safety monitoring system). However, only partial states of the vehicle can be checked through manual work or a 5T system, the actual vibration state of the vehicle body cannot be detected in real time in the running process of the railway freight vehicle, and potential safety hazards exist.
Disclosure of Invention
On the basis, the vehicle body acceleration monitoring device and system and the 25T axle load aluminum alloy coal hopper car are needed to be provided aiming at the problems that only partial states of the vehicle can be checked through manual work or a 5T system during the running of the existing railway freight vehicle, the actual vibration state of the vehicle body cannot be detected in real time, and potential safety hazards exist.
The utility model provides a car body acceleration monitoring devices, is applied to 25t gross rail load on axle aluminum alloy coal hopper car, 25t gross rail load on axle aluminum alloy coal hopper car includes bogie and automobile body, monitoring devices includes:
the first MEMS acceleration sensor is arranged on one side, close to the bogie, of the vehicle body and used for detecting a first acceleration value of the vehicle body vibrating in a first direction and determining whether to output a trigger signal according to the first acceleration value;
the second MEMS acceleration sensor is arranged on one side, close to the bogie, of the vehicle body, and the projection area of the bogie on the vehicle body covers the projection areas of the first MEMS acceleration sensor and the second MEMS acceleration sensor on the vehicle body; and
the control device is arranged on one side, close to the bogie, of the vehicle body and is respectively electrically connected with the first MEMS acceleration sensor and the second MEMS acceleration sensor, and when the control device receives the trigger signal, the control device collects a second acceleration value of the vehicle body vibrating in the first direction through the second MEMS acceleration sensor and outputs the second acceleration value.
In one embodiment, when the first acceleration value is greater than or equal to a vibration threshold, the first MEMS acceleration sensor outputs the trigger signal to the control device;
when the first acceleration value is smaller than a vibration threshold value, the first MEMS acceleration sensor does not output the trigger signal.
In one embodiment, when the control device receives the trigger signal, the control device is switched from a sleep state to a working state, and collects a second acceleration value of the vehicle body vibrating in the first direction in a preset period through the second MEMS acceleration sensor, and outputs the second acceleration value.
In one embodiment, after the control device outputs the second acceleration value, the control device automatically switches from the working state to the sleep state.
In one embodiment, the vehicle body comprises a compartment and a bottom plate fixedly connected with the compartment, the first MEMS acceleration sensor and the second MEMS acceleration sensor are disposed on one side of the bottom plate away from the compartment, and a projected area of the bogie on the bottom plate covers a projected area of the first MEMS acceleration sensor and the second MEMS acceleration sensor on the bottom plate.
In one embodiment, the vehicle body acceleration monitoring device further includes:
the LoRa communication device, with the control device communication is connected, the LoRa communication device be used for with set up in the on-vehicle gateway communication connection of 25t axle load aluminum alloy coal hopper car.
In one embodiment, the vehicle body acceleration monitoring device further includes:
and the power supply device is electrically connected with the first MEMS acceleration sensor, the second MEMS acceleration sensor, the control device and the LoRa communication device respectively.
A vehicle body acceleration monitoring system comprising:
the vehicle body acceleration monitoring device of any one of the above embodiments, wherein the vehicle body acceleration monitoring device is arranged on the 25t axle load aluminum alloy coal hopper car; and
and the vehicle-mounted gateway is arranged on the 25t axle weight aluminum alloy coal hopper car and is in communication connection with the control device.
In one embodiment, the vehicle body acceleration monitoring system further includes:
and the upper computer is in communication connection with the vehicle-mounted gateway and is used for determining whether the vibration of the vehicle body in the first direction is normal or not according to the second acceleration value.
In one embodiment, when the upper computer determines that the vibration of the vehicle body in the first direction is abnormal, the upper computer gives an alarm through an indicator light or a warning window.
A25 t axle load aluminum alloy coal hopper wagon comprises a plurality of wagon body acceleration monitoring devices in any one of the embodiments.
Compared with the prior art, the vehicle body acceleration monitoring device and system and the 25t axle load aluminum alloy coal hopper car have the advantages that the first MEMS acceleration sensor, the second MEMS acceleration sensor and the control device are arranged on one side, close to the bogie, of the vehicle body. The projected area of the bogie on the vehicle body covers the projected areas of the first MEMS acceleration sensor and the second MEMS acceleration sensor on the vehicle body. And detecting a first acceleration value of the vehicle body vibrating in the first direction through the first MEMS acceleration sensor, and determining whether to output a trigger signal according to the first acceleration value. When the control device receives the trigger signal, the control device acquires a second acceleration value of the vibration of the vehicle body in the first direction through the second MEMS acceleration sensor and outputs the second acceleration value. Therefore, when the 25t axle load aluminum alloy coal hopper car runs, the real-time detection on the actual vibration condition of the car body can be realized, so that the problems of loosening of car body parts, wave grinding rail damage and the like caused by overlarge vibration are avoided, and the running safety of the hopper car is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a circuit block diagram of a vehicle body acceleration monitoring device according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of an application of a vehicle body acceleration monitoring device according to an embodiment of the present disclosure;
FIG. 3 is a schematic block diagram of a circuit of a vehicle body acceleration monitoring device according to an embodiment of the present disclosure;
FIG. 4 is a block diagram of a vehicle body acceleration monitoring system according to an embodiment of the present disclosure;
FIG. 5 is a block circuit diagram of a 25t axle weight aluminum alloy coal hopper car according to an embodiment of the present application.
Description of reference numerals:
10. a vehicle body acceleration monitoring device; 100. a first MEMS acceleration sensor; 20. 25t of axle weight aluminum alloy coal hopper car; 200. a second MEMS acceleration sensor; 210. a bogie; 220. a vehicle body; 221. a carriage; 222. a base plate; 30. a vehicle body acceleration monitoring system; 300. a control device; 400. a LoRa communication device; 310. a vehicle-mounted gateway; 500. a power supply device; 600. and (4) an upper computer.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.
The numbering of the components as such, e.g., "first", "second", etc., is used herein for the purpose of describing the objects only, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, an embodiment of the present application provides a vehicle body acceleration monitoring device 10, which is applied to a 25t axle load aluminum alloy coal hopper car 20. The 25t axle weight aluminum alloy coal hopper car 20 comprises a bogie 210 and a car body 220. The vehicle body acceleration monitoring device 10 includes: a first MEMS acceleration sensor 100, a second MEMS acceleration sensor 200 and a control device 300. The first MEMS acceleration sensor 100 is disposed on a side of the vehicle body 220 close to the bogie 210. The first MEMS acceleration sensor 100 is configured to detect a first acceleration value of the vehicle body 220 vibrating in the first direction, and determine whether to output a trigger signal according to the first acceleration value.
The second MEMS acceleration sensor 200 is disposed on a side of the vehicle body 220 close to the bogie 210, and a projected area of the bogie 210 on the vehicle body 220 covers projected areas of the first MEMS acceleration sensor 100 and the second MEMS acceleration sensor 200 on the vehicle body 220. The control device 300 is disposed on a side of the vehicle body 220 close to the bogie 210. The control device 300 is electrically connected to the first MEMS acceleration sensor 100 and the second MEMS acceleration sensor 200, respectively. When the control device 300 receives the trigger signal, the control device 300 acquires a second acceleration value of the vehicle body 220 vibrating in the first direction through the second MEMS acceleration sensor 200, and outputs the second acceleration value.
It is understood that the manner of disposing the first MEMS acceleration sensor 100 on the side of the vehicle body 220 close to the bogie 210 is not limited, as long as the first MEMS acceleration sensor 100 and the vehicle body 220 are fixed to each other. In one embodiment, the first MEMS acceleration sensor 100 may be fixed to the vehicle body 220 by a snap. The first MEMS acceleration sensor 100 may also be fixed to the vehicle body 220 by screws. Further, when the first MEMS acceleration sensor 100 is fixed to the vehicle body 220, the first MEMS acceleration sensor 100 may be attached to one side of the vehicle body 220 close to the bogie 210. This arrangement makes the first MEMS acceleration sensor 100 more accurate in detecting the first acceleration value of the vibration of the vehicle body 220 in the first direction.
In one embodiment, a projected area of the bogie 210 on the vehicle body 220 covers a projected area of the first MEMS acceleration sensor 100 on the vehicle body 220. That is, the first MEMS acceleration sensor 100 is disposed right above the bogie 210. Due to the arrangement, the first MEMS acceleration sensor 100 can be closer to the bogie 210, so that in the running process of the 25t axle load aluminum alloy coal hopper car 20, the vibration acceleration of the car body 220 can be accurately detected, and the detection effect is improved.
In one embodiment, the first direction may be a vertical direction. When the 25t axle weight aluminum alloy coal hopper car 20 is in operation, a first acceleration value of vibration of the car body 220 in a first direction can be detected through the first MEMS acceleration sensor 100, and whether a trigger signal is output to the control device 300 is determined according to the first acceleration value. Specifically, when the first acceleration value is greater than or equal to the vibration threshold, the first MEMS acceleration sensor 100 outputs the trigger signal to the control device 300. That is, the vehicle body 220 is in the first acceleration value of first direction vibration is too big, and this moment control device 300 is awaken up, and passes through second MEMS acceleration sensor 200 gathers the vehicle body 220 is in the second acceleration value of first direction vibration, simultaneously output the second acceleration value is to the host computer for the host computer is according to the second acceleration value is confirmed whether to report to the police to the vibration of vehicle body 220, thereby avoids vibrating too big and causes the emergence of the not hard up, ripples track damage scheduling problem of vehicle body spare part.
Conversely, when the first acceleration value is smaller than the vibration threshold, the first MEMS acceleration sensor 100 does not output the trigger signal. I.e. the first acceleration value of the vibration of the vehicle body 220 in the first direction is within the normal range, at which time the control device 300 does not need to be woken up. Thus, the control device 300 can be determined whether to wake up through the above logic. In one embodiment, the specific value of the vibration threshold may be set by edge calculation and referring to an acceleration value that causes a high-frequency and low-frequency vibration of the vehicle body, and is not limited to the specific value.
In one embodiment, the first MEMS acceleration sensor 100 may compare the first detected acceleration value to the vibration threshold value. The comparison between the first acceleration value and the vibration threshold is not limited, for example, the first MEMS acceleration sensor 100 may compare the first acceleration value and the vibration threshold by a difference value. If the first acceleration value is greater than or equal to the vibration threshold, the first MEMS acceleration sensor 100 outputs the trigger signal to the control device 300. On the contrary, if the first acceleration value is smaller than the vibration threshold, the first MEMS acceleration sensor 100 does not output the trigger signal to the control device 300. Thus, the first MEMS acceleration sensor 100 can determine whether to wake up the control device 300 according to the first acceleration value through the above logic.
It is understood that the manner of disposing the second MEMS acceleration sensor 200 on the side of the vehicle body 220 close to the bogie 210 is not limited, as long as the second MEMS acceleration sensor 200 is fixed to the vehicle body 220. In one embodiment, the second MEMS acceleration sensor 200 may be fixed to the vehicle body 220 by a snap. The second MEMS acceleration sensor 200 may also be fixed to the vehicle body 220 by screws. Further, when the second MEMS acceleration sensor 200 is fixed to the vehicle body 220, the second MEMS acceleration sensor 200 may be attached to a side of the vehicle body 220 close to the bogie 210. The arrangement is such that the second MEMS acceleration sensor 200 can detect the second acceleration value of the vibration of the vehicle body 220 in the first direction more accurately.
In one embodiment, a projected area of the bogie 210 on the vehicle body 220 covers a projected area of the second MEMS acceleration sensor 200 on the vehicle body 220. That is, the second MEMS acceleration sensor 200 is disposed right above the bogie 210. Due to the arrangement, the second MEMS acceleration sensor 200 can be closer to the bogie 210, so that in the running process of the 25t axle load aluminum alloy coal hopper car 20, the vibration acceleration of the car body 220 can be accurately detected, and the detection effect is improved.
It is to be understood that the manner in which the control device 300 is disposed on the side of the vehicle body 220 close to the bogie 210 is not limited as long as the control device 300 is secured to the vehicle body 220. In one embodiment, the control device 300 may be secured to the body 220 by a snap fit. The control device 300 may be fixed to the vehicle body 220 by screws.
It is to be understood that the specific structure of the control device 300 is not limited as long as it has a function of acquiring a second acceleration value of the vibration of the vehicle body 220 in the first direction by the second MEMS acceleration sensor 200 and outputting the second acceleration value. In one embodiment, the control device 300 may be an MCU (micro control unit). The control device 300 may also be an integrated control chip.
It is to be understood that the manner of electrically connecting the control device 300 with the first MEMS acceleration sensor 100 and the second MEMS acceleration sensor 200 respectively is not limited as long as it is ensured that the first MEMS acceleration sensor 100 can output the trigger signal to the control device 300 and the second MEMS acceleration sensor 200 can transmit the detected second acceleration value to the control device 300. In one embodiment, the control device 300 may be electrically connected to the first MEMS acceleration sensor 100 and the second MEMS acceleration sensor 200 by wires, respectively. Specifically, the material of the conductive wire is not limited, and for example, the material of the conductive wire may be copper or aluminum. In one embodiment, the control device 300 may also be directly electrically connected to the first MEMS acceleration sensor 100 and the second MEMS acceleration sensor 200.
In one embodiment, the control device 300 wakes up when the control device 300 is receiving the trigger signal. I.e. the control device 300 enters the active state from the sleep state. At this time, the control device 300 may collect a second acceleration value of the vehicle body 220 vibrating in the first direction in a preset period through the second MEMS acceleration sensor 200, and output the second acceleration value.
In an embodiment, the specific time of the preset period may be set according to an actual requirement, and is not limited to a specific value here. For example, the preset period may be 10 s. Thus, during a preset period, the control device 300 may acquire a second acceleration value of the vehicle body 220 vibrating in the first direction through the second MEMS acceleration sensor 200. Specifically, the control device 300 reads the second acceleration value acquired by the second MEMS acceleration sensor 200 once per second, and acquires ten second acceleration values ten times in a preset period. Meanwhile, the control device 300 outputs the ten collected second acceleration values to the upper computer, so that the upper computer determines whether to give an alarm to the vibration of the vehicle body 220 according to the ten second acceleration values, and the problems of loosening of vehicle body parts, wave grinding rail damage and the like caused by overlarge vibration are avoided.
In one embodiment, the control device 300 automatically switches from the working state to the sleep state after the control device 300 outputs the second acceleration value. This reduces the power consumption of the entire vehicle body acceleration monitoring device 10.
In this embodiment, the first MEMS acceleration sensor 100, the second MEMS acceleration sensor 200, and the control device 300 are disposed on a side of the vehicle body 220 close to the bogie 210. A first acceleration value of the vehicle body 220 vibrating in the first direction is detected by the first MEMS acceleration sensor 100, and it is determined whether to output a trigger signal according to the first acceleration value. When the control device 300 receives the trigger signal, the control device 300 acquires a second acceleration value of the vehicle body 220 vibrating in the first direction through the second MEMS acceleration sensor 200, and outputs the second acceleration value. Therefore, when the 25t axle load aluminum alloy coal hopper car 20 runs, the real-time detection of the actual vibration condition of the car body 220 can be realized, so that the problems of car body part looseness, wave grinding track damage and the like caused by overlarge vibration are avoided, and the running safety of the hopper car is improved.
Referring to fig. 2, in one embodiment, the vehicle body 220 includes a compartment 221 and a floor 222 fixedly connected to the compartment 221. The first MEMS acceleration sensor 100 and the second MEMS acceleration sensor 200 are disposed on a side of the bottom plate 222 away from the car 221, and a projected area of the bogie 210 on the bottom plate 222 covers a projected area of the first MEMS acceleration sensor 100 and the second MEMS acceleration sensor 200 on the bottom plate 222.
In one embodiment, the fixing manner between the car 221 and the floor 222 is not limited, for example, the car 221 and the floor 222 may be welded and fixed, and the car 221 and the floor 222 may also be fixed by bolts.
In one embodiment, the projected area of the bogie 210 on the base plate 222 covers the projected areas of the first MEMS acceleration sensor 100 and the second MEMS acceleration sensor 200 on the base plate 222. Namely, the first MEMS acceleration sensor 100 and the second MEMS acceleration sensor 200 are disposed right above the bogie 210. Due to the arrangement, the first MEMS acceleration sensor 100 and the second MEMS acceleration sensor 200 can be closer to the bogie 210, so that in the running process of the 25t axle load aluminum alloy coal hopper car 20, the acceleration of the vibration of the car body 220 can be accurately detected, and the detection effect is improved.
Referring to fig. 3, in an embodiment, the vehicle body acceleration monitoring device 10 further includes: the LoRa communication device 400. The LoRa communication device 400 is communicatively coupled to the control device 300. The LoRa communication device 400 is used for being in communication connection with the vehicle-mounted gateway 310 arranged on the 25t axle weight aluminum alloy coal hopper car 20.
In one embodiment, the LoRa communication device 400 may be replaced with other types of communication devices (e.g., 4G/5G wireless communication module, WiFi/bluetooth/ANT/ZigBee wireless communication module, etc.). The control device 300 detects the second acceleration value of the vehicle body 220 vibrating in the first direction through the second MEMS acceleration sensor 200, and the second acceleration value is sent to the vehicle-mounted gateway 310 through the LoRa communication device 400, so that the vehicle-mounted gateway 310 uploads the second acceleration value to a monitoring platform (such as an upper computer). In this embodiment, the control device 300 uploads the second acceleration value to the vehicle-mounted gateway 310 through the LoRa communication device 400, and the overall power consumption can be further reduced by using the LoRa communication device 400 to implement communication in a certain transmission distance.
In one embodiment, the vehicle body acceleration monitoring device 10 further includes: the power supply device 500. The power supply device 500 is electrically connected to the first MEMS acceleration sensor 100, the second MEMS acceleration sensor 200, the control device 300, and the LoRa communication device 400, respectively. It is to be understood that the specific structure of the power supply device 500 is not limited as long as it has a function of supplying power to the first MEMS acceleration sensor 100, the second MEMS acceleration sensor 200, the control device 300, and the LoRa communication device 400. In one embodiment, the power supply device 500 may be a dry battery. The power supply device 500 may also be a battery.
Referring to fig. 4, another embodiment of the present application provides a vehicle body acceleration monitoring system 30. The vehicle body acceleration monitoring system 30 includes: the vehicle body acceleration monitoring device 10 and the vehicle-mounted gateway 310 according to any one of the above embodiments. The vehicle body acceleration monitoring device 10 is arranged on the 25t axle load aluminum alloy coal hopper car 20. The vehicle-mounted gateway 310 is arranged on the 25t axle weight aluminum alloy coal hopper car 20. The onboard gateway 310 is communicatively connected to the control device 300.
In one embodiment, the vehicle gateway 310 may be a conventional vehicle gateway with information processing function. In one embodiment, the manner of installing the vehicle-mounted gateway 310 on the 25t axle weight aluminum alloy coal hopper car 20 is not limited, as long as the vehicle-mounted gateway 310 is fixed on the 25t axle weight aluminum alloy coal hopper car 20. In one embodiment, the onboard gateway 310 may be screwed to the 25t axle weight aluminum alloy coal hopper car 20. The vehicle-mounted gateway 310 can also be fastened to the 25t axle weight aluminum alloy coal hopper car 20 by a snap. In one embodiment, the onboard gateway 310 may be communicatively coupled to the control device 300 via an LoRa communication device 400. By adopting the communication mode realized by the LoRa communication device 400, the overall power consumption of the wagon top cover monitoring system 30 can be further reduced under the condition of a certain transmission distance.
The brake cylinder monitoring system 30 described in this embodiment, through the cooperation of the vehicle-mounted gateway 310 and the brake cylinder monitoring device 10, can realize real-time detection of the actual vibration condition of the vehicle body 220 in the operation process of the 25t axle weight aluminum alloy coal hopper car 20, thereby avoiding the problems of loosening of vehicle body parts, wave grinding rail damage and the like caused by excessive vibration, and improving the safety of hopper car operation.
In one embodiment, the brake cylinder monitoring system 30 further comprises: a battery management subsystem. The battery management subsystem is used for uniformly managing the power supply of the power supply device 500 and distributing energy according to the power consumption requirements of the first MEMS acceleration sensor 100, the second MEMS acceleration sensor 200, the control device 300 and the LoRa communication device 400, so that the brake cylinder monitoring system 30 achieves the purpose of low power consumption and the service life of the system is prolonged.
In one embodiment, the vehicle body acceleration monitoring system 30 further comprises: and an upper computer 600. The upper computer 600 is in communication connection with the vehicle-mounted gateway 310. The upper computer 600 is used for determining whether the vibration of the vehicle body 220 in the first direction is normal according to the second acceleration value. In one embodiment, the communication mode between the upper computer 600 and the vehicle-mounted gateway 310 is not limited, as long as the communication between the upper computer 600 and the vehicle-mounted gateway 310 is ensured. In one embodiment, the upper computer 600 and the vehicle-mounted gateway 310 may communicate with each other in a 4G/5G communication manner. The upper computer 600 and the vehicle-mounted gateway 310 can also adopt other communication modes to realize communication, such as WiFi, Bluetooth and the like.
The upper computer 600 is used for determining whether the vibration of the vehicle body 220 in the first direction is normal according to the second acceleration value. Specifically, when the control device 300 is awakened, the control device 300 may collect a second acceleration value of the vehicle body 220 vibrating in the first direction through the second MEMS acceleration sensor 200, and output the second acceleration value to the upper computer 600. When the upper computer 600 determines that the vehicle body 220 vibrates in the first direction in an abnormal state according to the second acceleration value, the upper computer 600 gives an alarm, so that an operator is prompted that the vehicle body 220 vibrates in the first direction in an abnormal state.
In one embodiment, the manner of the alarm of the upper computer 600 is not limited, for example, the upper computer 600 may alarm through an indicator light. The upper computer 600 can also pop up a warning window through the display platform to give an alarm. In this embodiment, through host computer 600 with vehicle gateway 310's cooperation, it is right to realize automobile body 220 is in the vibration state of first direction carries out real-time detection to avoid the too big emergence that causes automobile body spare part not hard up, ripples and grinds track damage scheduling problem, improve hopper car operation's security.
Referring to FIG. 5, another embodiment of the present application provides a 25t axle weight aluminum alloy coal hopper car 20. The 25t axle weight aluminum alloy coal hopper car 20 comprises a plurality of car body acceleration monitoring devices 10 as described in any one of the above embodiments. In the 25t axle load aluminum alloy coal hopper wagon 20 of the embodiment, the actual vibration condition of the wagon body 220 is detected in real time through the wagon body acceleration monitoring device 10, so that the problems of loosening of wagon body parts, damage to a wave grinding track and the like caused by excessive vibration are avoided, and the running safety of the hopper wagon is improved.
In summary, the present application sets the first MEMS acceleration sensor 100, the second MEMS acceleration sensor 200 and the control device 300 on a side of the car body 220 close to the bogie 210. A first acceleration value of the vehicle body 220 vibrating in the first direction is detected by the first MEMS acceleration sensor 100, and it is determined whether to output a trigger signal according to the first acceleration value. When the control device 300 receives the trigger signal, the control device 300 acquires a second acceleration value of the vehicle body 220 vibrating in the first direction through the second MEMS acceleration sensor 200, and outputs the second acceleration value. Therefore, when the 25t axle load aluminum alloy coal hopper car 20 runs, the real-time detection of the actual vibration condition of the car body 220 can be realized, so that the problems of car body part looseness, wave grinding track damage and the like caused by overlarge vibration are avoided, and the running safety of the hopper car is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (11)

1. A vehicle body acceleration monitoring device, which is applied to a 25t axle weight aluminum alloy coal hopper car (20), wherein the 25t axle weight aluminum alloy coal hopper car (20) comprises a bogie (210) and a vehicle body (220), and the monitoring device comprises:
the first MEMS acceleration sensor (100) is arranged on one side, close to the bogie (210), of the vehicle body (220), and the first MEMS acceleration sensor (100) is used for detecting a first acceleration value of vibration of the vehicle body (220) in a first direction and determining whether to output a trigger signal according to the first acceleration value;
the second MEMS acceleration sensor (200) is arranged on one side, close to the bogie (210), of the vehicle body (220), and the projection area of the bogie (210) on the vehicle body (220) covers the projection areas of the first MEMS acceleration sensor (100) and the second MEMS acceleration sensor (200) on the vehicle body (220); and
the control device (300) is arranged on one side, close to the bogie (210), of the vehicle body (220) and is respectively electrically connected with the first MEMS acceleration sensor (100) and the second MEMS acceleration sensor (200), when the control device (300) receives the trigger signal, the control device (300) collects a second acceleration value of the vehicle body (220) vibrating in the first direction through the second MEMS acceleration sensor (200) and outputs the second acceleration value.
2. The vehicle body acceleration monitoring device according to claim 1, characterized in that the first MEMS acceleration sensor (100) outputs the trigger signal to the control device (300) when the first acceleration value is greater than or equal to a vibration threshold value;
the first MEMS acceleration sensor (100) does not output the trigger signal when the first acceleration value is less than a vibration threshold.
3. The vehicle body acceleration monitoring device according to claim 1, characterized in that when the control device (300) receives the trigger signal, the control device (300) switches from a sleep state to an operating state, and collects a second acceleration value of the vehicle body (220) vibrating in the first direction for a preset period through the second MEMS acceleration sensor (200), and outputs the second acceleration value.
4. The vehicle body acceleration monitoring device according to claim 3, characterized in that the control means (300) automatically switches from an operating state to a sleep state after the control means (300) outputs the second acceleration value.
5. The vehicle body acceleration monitoring device according to claim 1, characterized in that the vehicle body (220) comprises a compartment (221) and a floor (222) fixedly connected to the compartment (221), the first MEMS acceleration sensor (100) and the second MEMS acceleration sensor (200) are disposed on a side of the floor (222) away from the compartment (221), and a projected area of the bogie (210) on the floor (222) covers a projected area of the first MEMS acceleration sensor (100) and the second MEMS acceleration sensor (200) on the floor (222).
6. The vehicle body acceleration monitoring device according to claim 1, characterized by further comprising:
the LoRa communication device (400) is in communication connection with the control device (300), and the LoRa communication device (400) is used for being in communication connection with the vehicle-mounted gateway (310) arranged on the 25t axle load aluminum alloy coal hopper car (20).
7. The vehicle body acceleration monitoring device according to claim 6, characterized by further comprising:
a power supply device (500) electrically connected to the first MEMS acceleration sensor (100), the second MEMS acceleration sensor (200), the control device (300), and the LoRa communication device (400), respectively.
8. A vehicle body acceleration monitoring system, comprising:
the vehicle body acceleration monitoring device of any one of claims 1 to 7, disposed on the 25t axle weight aluminum alloy coal hopper car (20); and
and the vehicle-mounted gateway (310) is arranged on the 25t axle weight aluminum alloy coal hopper car (20) and is in communication connection with the control device (300).
9. The vehicle body acceleration monitoring system of claim 8, characterized by further comprising:
and the upper computer (600) is in communication connection with the vehicle-mounted gateway (310) and is used for determining whether the vibration of the vehicle body (220) in the first direction is normal or not according to the second acceleration value.
10. The vehicle body acceleration monitoring system of claim 9, characterized in that when the upper computer (600) determines that the vibration of the vehicle body (220) in the first direction is abnormal, the upper computer (600) gives an alarm through an indicator light or a warning window.
11. A 25t axle load aluminum alloy coal hopper car (20) comprising a plurality of car body acceleration monitoring devices according to any one of claims 1-7.
CN202011481956.XA 2020-12-15 2020-12-15 Vehicle body acceleration monitoring device and system and 25t axle load aluminum alloy coal hopper car Pending CN112572489A (en)

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