阅读说明：本技术 车钩缓冲装置的状态监测方法及系统 (State monitoring method and system for coupler buffer device ) 是由 杜锦涛 刘佺 郝玉福 陆青松 姜仕军 尹国瑞 田广阔 刘展文 宋波 张俊杰 王帅 于 2021-02-08 设计创作，主要内容包括：本发明涉及车钩缓冲装置的状态监测方法及系统,其中,方法包括：处理器从传感器获取检测信息；传感器包括：实时检测车钩连挂面的间距数据的距离传感器、实时检测吸能装置的位移数据的位移传感器、实时检测吸能装置受到的冲击力数据的力传感器、实时检测车钩缓冲装置的摆角数据的角度传感器、安装于车钩的主轴位置的限位开关中的至少一种；处理器对检测信息进行边缘计算处理,得到车钩缓冲装置状态；处理器根据检测信息和/或车钩缓冲装置状态生成数据包,并将数据包按照预设机制发送给列车接收终端和/或存储模块和/或数据中心。(The invention relates to a method and a system for monitoring the state of a coupler buffer device, wherein the method comprises the following steps: the processor acquires detection information from the sensor; the sensor includes: the system comprises at least one of a distance sensor for detecting distance data of coupler connection fine dried noodles in real time, a displacement sensor for detecting displacement data of an energy absorption device in real time, a force sensor for detecting impact force data received by the energy absorption device in real time, an angle sensor for detecting swing angle data of a coupler buffer device in real time and a limit switch arranged at the position of a main shaft of the coupler; the processor carries out edge calculation processing on the detection information to obtain the state of the coupler buffer device; and the processor generates a data packet according to the detection information and/or the state of the coupler buffer device, and sends the data packet to a train receiving terminal and/or a storage module and/or a data center according to a preset mechanism.)

1. A state monitoring method for a coupler buffer device is characterized by comprising the following steps:

the processor acquires detection information from the sensor; the sensor includes: the system comprises at least one of a distance sensor for detecting distance data of coupler connection fine dried noodles in real time, a displacement sensor for detecting displacement data of an energy absorption device in real time, a force sensor for detecting impact force data received by the energy absorption device in real time, an angle sensor for detecting swing angle data of a coupler buffer device in real time and a limit switch arranged at the position of a main shaft of the coupler;

the processor carries out edge calculation processing on the detection information to obtain the state of the coupler buffer device;

and the processor generates a data packet according to the detection information and/or the state of the coupler buffer device, and sends the data packet to a train receiving terminal and/or a storage module and/or a data center according to a preset mechanism.

2. The method for monitoring the state of the coupler buffer device according to claim 1, wherein the detection information includes pitch data and/or displacement data and/or impact force data and/or pivot angle data and/or switch state, and the processing the detection information by the processor through edge calculation to obtain the state of the coupler buffer device specifically includes:

the processor determines the state of the coupler according to the state of the switch; or the processor carries out average calculation processing according to the distance data of the two matched couplers to obtain the coupler distance data; the processor determines the coupler state according to the switch state and the coupler spacing data; and/or

The processor determines the state of the energy absorption device according to the displacement data and/or the impact force data; and/or

The processor determines the state of a centering device or the state of an angle sensor according to the swing angle data and the state of the coupler;

and the processor determines the state of the coupler buffer device according to the state of the coupler and/or the state of the energy absorption device and/or the state of the centering device and/or the state of the angle sensor.

3. The method for monitoring the state of the coupler draft gear according to claim 2, wherein said switching state comprises a contact state and an open state; the processor determining the coupler state according to the switch state and the coupler spacing data specifically comprises:

the processor judges whether the switch state is a contact state;

when the switch state is a contact state, the processor judges whether the coupler spacing data exceeds a preset threshold value; when the coupler spacing data does not exceed a preset threshold value, determining that the state of the coupler is a coupling state; when the distance data of the car coupler exceeds a preset threshold value, determining that the state of the car coupler is a state to be hung;

and when the switch state is the disconnection state, the processor determines that the coupler state is the non-coupling state.

The processor detects whether an unhooking instruction is received in real time; and when the state of the coupler is determined to be the coupling state and the uncoupling instruction is not received, the state of the coupler is changed into the non-coupling state, and the state of the coupler is determined to be the uncoupling state.

4. The method for monitoring the state of the coupler draft gear according to claim 2, wherein said displacement data comprises time data; the processor determining the state of the energy absorption device according to the displacement data and the impact force data specifically comprises the following steps:

obtaining the relationship between the displacement data and the time data according to the formula 1:

x ═ f (t) (equation 1)

Wherein t is time data, and x is displacement data at the moment of t;

obtaining v by derivation of the formula 1, wherein v is the displacement data variable quantity of the energy absorption device in unit time;

theoretical impact force data were obtained according to equation 2:

f (x, v) (equation 2)

Wherein F is theoretical impact force data, and x is displacement data of the energy absorption device;

determining a theoretical impact force threshold according to the theoretical impact force data and a preset coefficient, performing comparison processing according to the theoretical impact force threshold and the impact force data, and determining the state of the energy absorption device according to a comparison result;

the preset coefficients comprise a first coefficient, a second coefficient and a third coefficient; the first coefficient is less than the second coefficient, which is less than the third coefficient; the determining a theoretical impact force threshold value according to the theoretical impact force data and a preset coefficient, performing comparison processing according to the theoretical impact force threshold value and the impact force data, and determining the state of the energy absorption device according to a comparison result specifically comprises the following steps:

determining a first theoretical impact force threshold according to the theoretical impact force data and a first coefficient; determining a second theoretical impact force threshold according to the theoretical impact force data and a second coefficient; determining a third theoretical impact force threshold according to the theoretical impact force data and a third coefficient;

judging whether the impact force data is larger than a first theoretical impact force threshold value;

when the impact force data is less than or equal to a first theoretical impact force threshold value, determining that the state of the energy absorption device is a second fault state;

when the impact force data is larger than a first theoretical impact force threshold, judging whether the impact force data is larger than or equal to a second theoretical impact force threshold; when the impact force data is smaller than a second theoretical impact force threshold value, determining that the energy absorption device is in a fault state, namely a third fault state;

when the impact force data is larger than a second theoretical impact force threshold, judging whether the impact force data is larger than a third theoretical impact force threshold; when the impact force data is less than or equal to a third theoretical impact force threshold value, determining that the energy absorption device is in a normal state;

and when the impact force data is larger than a third theoretical impact force threshold value, determining that the state of the energy absorption device is a second fault state.

5. The method for monitoring the state of the coupler draft gear according to claim 2, wherein the step of determining the state of the centering device or the state of the angle sensor by the processor according to the swing angle data and the state of the coupler specifically comprises the steps of:

when the coupler state is a to-be-coupled state, judging whether the swing angle data exceeds a first preset swing angle range; when the swing angle data does not exceed a first preset swing angle range, determining that the state of the centering device is a normal state;

when the swing angle data exceeds a first preset swing angle range, determining that the state of the centering device is a second fault state;

when the coupler state is a coupling state, judging whether the swing angle data exceeds a second preset swing angle range; when the swing angle data does not exceed a second preset swing angle range, determining that the state of the centering device is a normal state;

and when the swing angle data exceeds a second preset swing angle range, determining that the state of the angle sensor is a third fault state.

6. The method for monitoring the state of the coupler draft gear according to claim 2, wherein the step of determining the state of the coupler draft gear according to the state of the coupler and/or the state of the energy absorbing device and/or the state of the centering device and/or the state of the angle sensor by the processor comprises the following steps:

when the coupler state is a coupling state or a waiting state, the processor determines that the working state of the coupler is a normal state; when the coupler state is in the uncoupling state, the processor determines that the coupler working state is a first fault state;

the processor determines the state of the coupler buffer device according to state information with the highest priority in the working state of the coupler and/or the state of the energy absorption device and/or the state of the centering device and/or the state of the angle sensor;

wherein the state information comprises a normal state, a first fault state, a second fault state and a third fault state; the first fault state has a higher priority than the second fault state, the second fault state has a higher priority than the third fault state, and the third fault state has a higher priority than the normal state.

7. The method for monitoring the state of the coupler buffer device according to claim 1, wherein the step of sending the data packet to the train receiving terminal and/or the storage module and/or the data center by the processor according to a preset mechanism specifically comprises:

the processor sends the data packet to a train receiving terminal through a local area communication module; and/or

The processor acquires the communication state of the wide area communication module in real time; the communication state comprises normal communication and abnormal communication;

when the communication state is communication abnormity, the first processor stores the data packet into the storage module;

when the communication state is normal communication, the first processor detects whether a cached data packet exists in the storage module; when the cached data packet does not exist in the storage module, the first processor sends the current data packet to a data center through the wide area communication module;

when the cached data packet exists in the storage module, the first processor compares the current data packet with the priority of the state of the coupler buffer device corresponding to the cached data packet in the storage module; when the priority corresponding to the current data packet is high, the first processor sends the current data packet to a data center through the wide area communication module;

when the priority corresponding to the cached data packet in the storage module is high, the first processor sends the cached data packet to a data center through the wide area communication module;

when the priorities corresponding to the current data packet and the cached data packet are the same, the first processor judges whether the current data packet corresponds to a normal state or not; when the current data packet is not in a normal state, the first processor sends the current data packet to a data center through the wide area communication module;

when the state of a coupler buffer device corresponding to the current data packet is a normal state, the first processor acquires the running state of the train in real time; the running state comprises a running state and a stopping state; when the running state of the train is a running state, the first processor sends a current data packet to a data center through the wide area communication module;

and when the running state of the train is a stop state, the first processor sends the cached data packet to a data center through the wide area communication module.

8. The method for monitoring the state of the coupler buffer device according to claim 1, wherein after the processor generates a packet according to the detection information and/or the state of the coupler buffer device, the method further comprises:

the processor sends the data packet to a first processor through a local area communication module;

and the first processor sends the data packet to a train receiving terminal and/or a storage module and/or a data center according to a preset mechanism.

9. A condition monitoring system for a draft gear of a car coupler, said condition monitoring system comprising:

the distance sensor is used for detecting the distance data of the hook-connected fine dried noodles in real time;

the displacement sensor is used for detecting the displacement data of the energy absorption device in real time;

the force sensor is used for detecting impact force data received by the energy absorption device in real time;

the angle sensor is used for detecting swing angle data of the coupler buffer device in real time;

the limit switch is used for outputting a switch state;

the processor is used for carrying out edge calculation processing on the detection information to obtain the state of the coupler buffer device; generating a data packet according to the detection information and/or the state of the coupler buffer device, and sending the data packet to a train receiving terminal and/or a storage module and/or a data center according to a preset mechanism;

and the storage module is used for storing the data packet.

10. The condition monitoring system of a coupler draft gear according to claim 9, further comprising:

and the first processor is used for receiving the data packet sent by the processor and sending the data packet to a train receiving terminal and/or a storage module and/or a data center according to a preset mechanism.

A wide area communication module for communication between the processor or the first processor and the data center;

and the local area communication module is used for communication among the processor, the first processor and the train receiving terminal.

Technical Field

The invention relates to the technical field of car couplers, in particular to a state monitoring method and system of a car coupler buffer device.

Background

The coupler buffer device is a vehicle component used for coupling a vehicle and a vehicle, a locomotive or a bullet train with each other, transmitting traction force, braking force and mitigating longitudinal impact force. The car coupler, the energy absorption device, the mounting base and the like form a whole and are mounted in a traction beam at the end of a car bottom framework. The coupler is a vehicle part used for realizing coupling between a locomotive and a vehicle or between the vehicle and the vehicle, transmitting traction force and impact force and keeping a certain distance between the vehicles.

The traditional coupler system has the functions of connection, transmission and buffering, is mostly in the form of mechanical products, is difficult to obtain the states of parts through other methods except for observing the appearance, and due to the lack of a reliable monitoring means, not only is hidden danger brought to the safe operation of a train, but also the operation and maintenance efficiency of the coupler is reduced.

Disclosure of Invention

The invention aims to provide a method and a system for monitoring the state of a coupler buffer device, aiming at the defects of the prior art, the method and the system utilize a plurality of sensors to detect various data of the coupler buffer device in real time, analyze the state of the coupler buffer device according to the various data, and preferentially send the data of the emergent state of the coupler buffer device to a data center, thereby facilitating the working personnel to rapidly know the state of the coupler buffer device, improving the maintenance efficiency of the coupler buffer device and ensuring the safety of a train.

In order to achieve the above object, in a first aspect, the present invention provides a method for monitoring a state of a coupler draft gear, where the method for monitoring the state of the coupler draft gear includes:

the processor acquires detection information from the sensor; the sensor includes: the system comprises at least one of a distance sensor for detecting distance data of coupler connection fine dried noodles in real time, a displacement sensor for detecting displacement data of an energy absorption device in real time, a force sensor for detecting impact force data received by the energy absorption device in real time, an angle sensor for detecting swing angle data of a coupler buffer device in real time and a limit switch arranged at the position of a main shaft of the coupler;

the processor carries out edge calculation processing on the detection information to obtain the state of the coupler buffer device;

and the processor generates a data packet according to the detection information and/or the state of the coupler buffer device, and sends the data packet to a train receiving terminal and/or a storage module and/or a data center according to a preset mechanism.

Preferably, the detection information includes distance data and/or displacement data and/or impact force data and/or pivot angle data and/or switch state, and the processor performs edge calculation processing on the detection information to obtain the state of the coupler buffer device specifically includes:

the processor determines the state of the coupler according to the state of the switch; or the processor carries out average calculation processing according to the distance data of the two matched couplers to obtain the coupler distance data; the processor determines the coupler state according to the switch state and the coupler spacing data; and/or

The processor determines the state of the energy absorption device according to the displacement data and/or the impact force data; and/or

The processor determines the state of a centering device or the state of an angle sensor according to the swing angle data and the state of the coupler;

and the processor determines the state of the coupler buffer device according to the state of the coupler and/or the state of the energy absorption device and/or the state of the centering device and/or the state of the angle sensor.

Further preferably, the switch state includes a contact state and an open state; the processor determining the coupler state according to the switch state and the coupler spacing data specifically comprises:

the processor judges whether the switch state is a contact state;

when the switch state is a contact state, the processor judges whether the coupler spacing data exceeds a preset threshold value; when the coupler spacing data does not exceed a preset threshold value, determining that the state of the coupler is a coupling state; when the distance data of the car coupler exceeds a preset threshold value, determining that the state of the car coupler is a state to be hung;

and when the switch state is the disconnection state, the processor determines that the coupler state is the non-coupling state.

The processor detects whether an unhooking instruction is received in real time; and when the state of the coupler is determined to be the coupling state and the uncoupling instruction is not received, the state of the coupler is changed into the non-coupling state, and the state of the coupler is determined to be the uncoupling state.

Further preferably, the displacement data has time data; the processor determining the state of the energy absorption device according to the displacement data and the impact force data specifically comprises the following steps:

obtaining the relationship between the displacement data and the time data according to the formula 1:

x ═ f (t) (equation 1)

Wherein t is time data, and x is displacement data at the moment of t;

obtaining v by derivation of the formula 1, wherein v is the displacement data variable quantity of the energy absorption device in unit time;

theoretical impact force data were obtained according to equation 2:

f (x, v) (equation 2)

Wherein F is theoretical impact force data, and x is displacement data of the energy absorption device;

determining a theoretical impact force threshold according to the theoretical impact force data and a preset coefficient, performing comparison processing according to the theoretical impact force threshold and the impact force data, and determining the state of the energy absorption device according to a comparison result;

the preset coefficients comprise a first coefficient, a second coefficient and a third coefficient; the first coefficient is less than the second coefficient, which is less than the third coefficient; the determining a theoretical impact force threshold value according to the theoretical impact force data and a preset coefficient, performing comparison processing according to the theoretical impact force threshold value and the impact force data, and determining the state of the energy absorption device according to a comparison result specifically comprises the following steps:

determining a first theoretical impact force threshold according to the theoretical impact force data and a first coefficient; determining a second theoretical impact force threshold according to the theoretical impact force data and a second coefficient; determining a third theoretical impact force threshold according to the theoretical impact force data and a third coefficient;

judging whether the impact force data is larger than a first theoretical impact force threshold value;

when the impact force data is less than or equal to a first theoretical impact force threshold value, determining that the state of the energy absorption device is a second fault state;

when the impact force data is larger than a first theoretical impact force threshold, judging whether the impact force data is larger than or equal to a second theoretical impact force threshold; when the impact force data is smaller than a second theoretical impact force threshold value, determining that the energy absorption device is in a fault state, namely a third fault state;

when the impact force data is larger than a second theoretical impact force threshold, judging whether the impact force data is larger than a third theoretical impact force threshold; when the impact force data is less than or equal to a third theoretical impact force threshold value, determining that the energy absorption device is in a normal state;

and when the impact force data is larger than a third theoretical impact force threshold value, determining that the state of the energy absorption device is a second fault state.

Further preferably, the determining, by the processor, the centering device state or the angle sensor state according to the swing angle data and the coupler state specifically includes:

when the coupler state is a to-be-coupled state, judging whether the swing angle data exceeds a first preset swing angle range; when the swing angle data does not exceed a first preset swing angle range, determining that the state of the centering device is a normal state;

when the swing angle data exceeds a first preset swing angle range, determining that the state of the centering device is a second fault state;

when the coupler state is a coupling state, judging whether the swing angle data exceeds a second preset swing angle range; when the swing angle data does not exceed a second preset swing angle range, determining that the state of the centering device is a normal state;

and when the swing angle data exceeds a second preset swing angle range, determining that the state of the angle sensor is a third fault state.

Further preferably, the determining, by the processor, the state of the coupler buffer device according to the state of the coupler and/or the state of the energy absorbing device and/or the state of the centering device and/or the state of the angle sensor specifically includes:

when the coupler state is a coupling state or a waiting state, the processor determines that the working state of the coupler is a normal state; when the coupler state is in the uncoupling state, the processor determines that the coupler working state is a first fault state;

the processor determines the state of the coupler buffer device according to state information with the highest priority in the working state of the coupler and/or the state of the energy absorption device and/or the state of the centering device and/or the state of the angle sensor;

wherein the state information comprises a normal state, a first fault state, a second fault state and a third fault state; the first fault state has a higher priority than the second fault state, the second fault state has a higher priority than the third fault state, and the third fault state has a higher priority than the normal state.

Preferably, the sending, by the processor, the data packet to the train receiving terminal and/or the storage module and/or the data center according to a preset mechanism specifically includes:

the processor sends the data packet to a train receiving terminal through a local area communication module; and/or

The processor acquires the communication state of the wide area communication module in real time; the communication state comprises normal communication and abnormal communication;

when the communication state is communication abnormity, the first processor stores the data packet into the storage module;

when the communication state is normal communication, the first processor detects whether a cached data packet exists in the storage module; when the cached data packet does not exist in the storage module, the first processor sends the current data packet to a data center through the wide area communication module;

when the cached data packet exists in the storage module, the first processor compares the current data packet with the priority of the state of the coupler buffer device corresponding to the cached data packet in the storage module; when the priority corresponding to the current data packet is high, the first processor sends the current data packet to a data center through the wide area communication module;

when the priority corresponding to the cached data packet in the storage module is high, the first processor sends the cached data packet to a data center through the wide area communication module;

when the priorities corresponding to the current data packet and the cached data packet are the same, the first processor judges whether the current data packet corresponds to a normal state or not; when the current data packet is not in a normal state, the first processor sends the current data packet to a data center through the wide area communication module;

when the state of a coupler buffer device corresponding to the current data packet is a normal state, the first processor acquires the running state of the train in real time; the running state comprises a running state and a stopping state; when the running state of the train is a running state, the first processor sends a current data packet to a data center through the wide area communication module;

and when the running state of the train is a stop state, the first processor sends the cached data packet to a data center through the wide area communication module.

Preferably, after the processor generates a packet according to the detection information and/or the coupler buffer status, the status monitoring method further includes:

the processor sends the data packet to a first processor through a local area communication module;

and the first processor sends the data packet to a train receiving terminal and/or a storage module and/or a data center according to a preset mechanism.

In a second aspect, a state monitoring system of a coupler buffer device is provided based on the above method for monitoring the state of the coupler buffer device, and the state monitoring system includes:

the distance sensor is used for detecting the distance data of the hook-connected fine dried noodles in real time;

the displacement sensor is used for detecting the displacement data of the energy absorption device in real time;

the force sensor is used for detecting impact force data received by the energy absorption device in real time;

the angle sensor is used for detecting swing angle data of the coupler buffer device in real time;

the limit switch is used for outputting a switch state;

the processor is used for carrying out edge calculation processing on the detection information to obtain the state of the coupler buffer device; generating a data packet according to the detection information and/or the state of the coupler buffer device, and sending the data packet to a train receiving terminal and/or a storage module and/or a data center according to a preset mechanism;

and the storage module is used for storing the data packet.

Preferably, the condition monitoring system further comprises:

and the first processor is used for receiving the data packet sent by the processor and sending the data packet to a train receiving terminal and/or a storage module and/or a data center according to a preset mechanism.

A wide area communication module for communication between the processor or the first processor and the data center;

and the local area communication module is used for communication among the processor, the first processor and the train receiving terminal.

According to the method and the system for monitoring the state of the coupler buffering device, provided by the embodiment of the invention, the plurality of sensors are used for detecting all data of the coupler buffering device in real time, analyzing the state of the coupler buffering device according to all data, and preferentially sending the data in the urgent state of the coupler buffering device to the data center, so that a worker can know the state of the coupler buffering device quickly, the maintenance efficiency of the coupler buffering device is improved, and the safety of a train is guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of a state monitoring system of a coupler draft gear according to an embodiment of the present invention;

fig. 2 is a flowchart of a method for monitoring a state of a coupler draft gear according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

According to the method and the system for monitoring the state of the coupler buffering device, provided by the invention, various data of the coupler buffering device are detected in real time by using the plurality of sensors, the state of the coupler buffering device is analyzed according to the various data, and urgent data of the state of the coupler buffering device are preferentially sent to the data center, so that workers can quickly know the state of the coupler buffering device, the maintenance efficiency of the coupler buffering device is improved, and the safety of a train is guaranteed.

To facilitate understanding of the technical solution of the present invention, a coupler draft gear will be described below. The head car of the train is generally a full-automatic or semi-automatic car coupler buffer device and comprises a car coupler, an energy absorption device, a mounting seat and a centering device. The middle part of the train is generally a semi-permanent coupler buffer device and only comprises an energy absorption device and a mounting seat.

The car coupler buffer devices are generally arranged at two ends of a train, and every two car coupler buffer devices are in a group to realize the coupling between the train and a train carriage. The centering device is connected with the mounting seat, the energy absorption device is mounted on the mounting seat, and the energy absorption device is connected with the car coupler. When the coupler buffering device is in a waiting state, the centering device can enable the coupler buffering device to be kept at a middle position. An angle sensor is arranged in the mounting seat. The distance sensors of the two mutually matched couplers are respectively arranged on two diagonal lines of the coupling surface of the coupler. And a displacement sensor and a force sensor are arranged in the energy absorption device.

Fig. 1 is a schematic structural diagram of a state monitoring system of a coupler draft gear according to an embodiment of the present invention, and as shown in fig. 1, the state monitoring system of the coupler draft gear includes:

and the distance sensor 1 is used for detecting the distance data of the hook-connected fine dried noodles in real time.

And the limit switch 2 is used for outputting a switch state which can represent the position of the coupler spindle.

And the displacement sensor 3 is used for detecting the displacement data of the energy absorption device in real time.

And the force sensor 4 is used for detecting impact force data received by the energy absorption device in real time.

And the angle sensor 5 is used for detecting the swing angle data of the coupler buffer device in real time.

And the processor 6 is used for carrying out edge calculation processing on the detection information to obtain the state of the coupler buffer device. And generating a data packet according to the detection information and/or the state of the coupler buffer device, and sending the data packet to the train receiving terminal and/or the storage module 10 and/or the data center according to a preset mechanism.

And the local area communication module 7 is used for communication among the processor 6, the first processor 8 and the train receiving terminal. In the embodiment of the present invention, the local area communication module 7 may be a Long Range Radio (LORA) module, a bluetooth module, a Zigbee module, a communication cable module, or the like.

And the first processor 8 is used for receiving the data packet sent by the processor and sending the data packet to the train receiving terminal and/or the storage module and/or the data center according to a preset mechanism.

And the wide area communication module 9 is used for communication between the processor or the first processor and the data center. The wide area communication module 9 may be a 4G module, a 5G module, a narrowband Internet of Things (NB-IoT) module, etc.

And the storage module 10 is used for storing the data packet.

In a preferred scheme, the state monitoring system of the coupler buffer device further comprises a train network module. The train Network module may be a Multifunction Vehicle Bus (MVB) module, a Controller Area Network (CAN) module, an ethernet module, or the like.

In a further preferred scheme, the state monitoring system of the coupler buffer device further comprises a sensor detection module, which is used for detecting whether each sensor works abnormally. And when the abnormal work of the sensor is detected, the detection data of the sensor which works abnormally is removed, so that the subsequent judgment and processing of the state of the coupler buffer device based on the detection data are not influenced. And meanwhile, warning information can be generated and sent to the processor.

Fig. 2 is a flowchart of a method for monitoring a state of a coupler draft gear according to an embodiment of the present invention, and details of a technical solution of the present invention are described with reference to fig. 2.

Step 110, the processor acquires detection information from the sensor;

specifically, the sensor includes: the distance sensor is used for detecting distance data of the coupler connecting fine dried noodles in real time, the displacement sensor is used for detecting displacement data of the energy absorption device in real time, the force sensor is used for detecting impact force data received by the energy absorption device in real time, the angle sensor is used for detecting swing angle data of the coupler buffer device in real time, and at least one of the limit switches is arranged on the position of a main shaft of the coupler.

The detection information comprises distance data and/or displacement data and/or impact force data and/or swing angle data and/or switch states. The switch states include a contact state and an open state. The displacement data are time data, and the displacement data of the energy absorption device at each moment are different. The impact force data has time data.

Step 120, the processor performs edge calculation processing on the detection information to obtain the state of the coupler buffer device;

specifically, the processor determines the coupler state according to the switch state. Or the processor carries out average calculation processing according to the distance data of the two matched couplers to obtain the coupler distance data. And the processor determines the coupler state according to the switch state and the coupler spacing data. And/or the processor determines a state of the energy absorbing device based on the displacement data and/or the impact force data. And/or the processor determines the state of the centering device or the state of the angle sensor according to the swing angle data and the state of the coupler. The processor determines the state of the coupler buffering device according to the state of the coupler and/or the state of the energy absorption device and/or the state of the centering device and/or the state of the angle sensor.

Wherein, the processor determines the coupler state according to the switch state specifically comprises: the processor judges whether the switch state is a contact state. And when the switch state is the disconnection state, the processor determines that the coupler state is the non-coupling state.

The processor determining the coupler state according to the switch state and the coupler spacing data specifically comprises: the processor judges whether the switch state is a contact state. And when the switch state is a contact state, the processor judges whether the distance data of the car coupler exceeds a preset threshold value. And when the distance data of the car coupler does not exceed the preset threshold value, determining that the state of the car coupler is a coupling state. And when the distance data of the car coupler exceeds a preset threshold value, determining that the state of the car coupler is a state to be hung. And when the switch state is the disconnection state, the processor determines that the coupler state is the non-coupling state.

That is, when the switch state of the limit switch is the off state, the coupler is in the non-connection state. When the switch state of the limit switch is a trigger state, the distance between the coupling surfaces of the two couplers does not exceed the preset distance, and the couplers are in a coupling state. The distance between the coupling surfaces of the two car couplers exceeds a preset distance, and the car couplers are in a state to be coupled.

And the processor detects whether an unhooking instruction is received in real time. And when the state of the coupler is determined to be the coupling state and the uncoupling instruction is not received, the state of the coupler is changed into the non-coupling state, and the state of the coupler is determined to be the uncoupling state.

It should be noted that, since there is a gap between the coupling surfaces after the couplers are coupled, but it cannot be guaranteed that the coupling surfaces of the two couplers are always parallel, in the embodiment of the present invention, the distance sensor actually detects the gap between the two ends of the coupling surfaces of the two couplers. The processor carries out average calculation processing on the distance data obtained by detecting the distance sensors at two diagonal angles of the two couplers so as to obtain accurate coupling surface clearance, namely coupler distance data.

In the preferred scheme, the problems of longitudinal train impulse and the like are easily caused due to overlarge coupler spacing data. The distance data of the car coupler can only detect the coupling gap of the car coupler through a professional calibration gauge during daily overhaul, and the problem of untimely detection exists in the monitoring mode. Therefore, in the embodiment of the invention, the processor monitors coupler spacing data in real time. And when the car coupler spacing data exceeds the preset car coupler spacing data, generating prompt information for prompting workers to replace relevant parts of the car coupler.

Wherein, the energy absorption device comprises a buffer, a crushing pipe and the like. The processor determining the state of the energy absorption device according to the displacement data specifically comprises: and the processor determines the state of the energy absorption device according to whether the displacement data is larger than the preset displacement data or not.

The processor determining the state of the energy absorption device according to the impact force data specifically comprises the following steps: and the processor determines the state of the energy absorption device according to whether the impact force data is greater than the preset impact force data.

The processor determines the state of the energy absorption device according to the displacement data and the impact force data, and specifically comprises the following steps:

obtaining the relationship between the displacement data and the time data according to the formula 1:

x ═ f (t) (equation 1)

Wherein t is time data, and x is displacement data at the time of t.

And (5) obtaining v by derivation of the formula 1, wherein v is the displacement data variable quantity of the energy absorption device in unit time.

Obtaining a theoretical impact force data formula according to formula 2:

f (x, v) (equation 2)

F is theoretical impact force data, and x is displacement data of the energy absorption device. And determining a theoretical impact force threshold value according to the theoretical impact force data and a preset coefficient, comparing the theoretical impact force threshold value and the impact force data, and determining the state of the energy absorption device according to a comparison result. The preset coefficients comprise a first coefficient, a second coefficient and a third coefficient; the first coefficient is smaller than the second coefficient, which is smaller than the third coefficient.

Determining a theoretical impact force threshold value according to the theoretical impact force data and a preset coefficient, performing comparison processing according to the theoretical impact force threshold value and the impact force data, and determining the state of the energy absorption device according to a comparison result specifically comprises the following steps: a first theoretical impact force threshold is determined based on the theoretical impact force data and the first coefficient. And determining a second theoretical impact force threshold according to the theoretical impact force data and the second coefficient. And determining a third theoretical impact force threshold according to the theoretical impact force data and the third coefficient. And judging whether the impact force data is larger than a first theoretical impact force threshold value. And when the impact force data is less than or equal to the first theoretical impact force threshold value, determining that the state of the energy absorption device is a second fault state. And when the impact force data is greater than the first theoretical impact force threshold, judging whether the impact force data is greater than or equal to a second theoretical impact force threshold. And when the impact force data is smaller than the second theoretical impact force threshold value, determining that the state of the energy absorption device is a fault state and a third fault state. And when the impact force data is greater than the second theoretical impact force threshold, judging whether the impact force data is greater than a third theoretical impact force threshold. And when the impact force data is less than or equal to the third theoretical impact force threshold value, determining that the energy absorption device is in a normal state. And when the impact force data is larger than a third theoretical impact force threshold value, determining that the state of the energy absorption device is a second fault state.

That is, the energy absorbing device is in a normal state only when the impact force data is less than or equal to the second theoretical impact force threshold and greater than or equal to the second theoretical impact force threshold. Otherwise, all are in a fault state.

The processor determines the state of the centering device or the state of the angle sensor according to the swing angle data and the state of the coupler specifically comprises the following steps: and when the car coupler state is a state to be hung, judging whether the swing angle data exceeds a first preset swing angle range. And when the swing angle data does not exceed the first preset swing angle range, determining that the state of the centering device is a normal state. And when the swing angle data exceeds the first preset swing angle range, determining that the state of the centering device is a second fault state. And when the coupler state is a coupling state, judging whether the swing angle data exceeds a second preset swing angle range. And when the swing angle data does not exceed the second preset swing angle range, determining that the state of the centering device is a normal state. And when the swing angle data exceeds a second preset swing angle range, determining that the state of the angle sensor is a third fault state. The first preset swing angle range is smaller than the second preset swing angle range. The first preset pivot angle range is typically [ -5 °, -5 ° ], and the second preset pivot angle range is typically [ -15 °,15 ° ].

The processor determines the state of the coupler buffer device according to the state of the coupler and/or the state of the energy absorption device and/or the state of the centering device and/or the state of the angle sensor, and the method specifically comprises the following steps: and when the coupler state is a coupling state or a waiting state, the processor determines that the working state of the coupler is a normal state. And when the coupler state is the uncoupling state, the processor determines that the coupler working state is a first fault state. And the processor determines the state of the coupler buffer device according to the state information with the highest priority in the working state of the coupler and/or the state of the energy absorption device and/or the state of the centering device and/or the state of the angle sensor. The status information includes a normal status, a first fault status, a second fault status, and a third fault status. The first fault condition has a higher priority than the second fault condition, the second fault condition has a higher priority than the third fault condition, and the third fault condition has a higher priority than the normal condition.

And step 130, the processor generates a data packet according to the detection information and/or the state of the coupler buffer device, and sends the data packet to the train receiving terminal and/or the storage module and/or the data center according to a preset mechanism.

Specifically, the processor sends the data packet to the train receiving terminal through the local area communication module; and/or the processor acquires the communication state of the wide area communication module in real time. The communication state includes normal communication and abnormal communication. When the communication state is communication abnormity, the first processor stores the data packet into the storage module. When the communication state is normal communication, the first processor detects whether the cached data packet exists in the storage module. And when the cached data packet does not exist in the storage module, the first processor sends the current data packet to the data center through the wide area communication module. When the cached data packet exists in the storage module, the first processor compares the current data packet with the priority of the state of the coupler buffer device corresponding to the cached data packet in the storage module. And when the priority corresponding to the current data packet is high, the first processor sends the current data packet to the data center through the wide area communication module. When the priority corresponding to the cached data packet in the storage module is high, the first processor sends the cached data packet to the data center through the wide area communication module. And when the priorities corresponding to the current data packet and the cached data packet are the same, the first processor judges whether the current data packet corresponds to a normal state or not. When the current data packet is not in a normal state, the first processor sends the current data packet to the data center through the wide area communication module. And when the state of the coupler buffer device corresponding to the current data packet is a normal state, the first processor acquires the running state of the train in real time. The running state includes a running state and a stopped state. And when the running state of the train is the running state, the first processor sends the current data packet to the data center through the wide area communication module. And when the running state of the train is a stop state, the first processor sends the cached data packet to the data center through the wide area communication module.

In the embodiment of the invention, when the train is in a stop state and the communication state of the wide area communication module is abnormal, the data packet is cached in the storage module. When the communication state of the wide area communication module is recovered to be normal, the priority of the cached data packet and the priority of the current data packet are compared, and the data packet with high priority is sent preferentially. And when the priority of the cached data packet is the same as that of the current data packet and the corresponding states are fault states, preferentially sending the current data packet. And when the priority of the cached data packet is the same as that of the currently newly generated data packet and the corresponding states are normal states, preferentially sending the cached data packet.

When the train is in a running state and the communication state of the wide area communication module is abnormal, the data packet is cached in the storage module. When the communication state of the wide area communication module is recovered to normal communication, the priority of the cached data packet is compared with the priority of the current data packet, and the data packet with high priority is sent preferentially. And when the priority of the cached data packet is the same as that of the data packet which is newly generated currently, the current data packet is preferentially sent.

In an optimal scheme, the processor sends data to a data center, and sends a data packet of which the corresponding coupler buffer device state is the first fault state, the second fault state or the third fault state to a preset storage module for storage.

In the preferred scheme, the communication signal strength is poor because the train buffer device is in a complex environment at the middle of the train relative to the environment at the head of the train. Therefore, in the embodiment of the present invention, data transmission inside the train adopts a star topology structure, and after the processor generates a data packet according to the detection information and/or the state of the coupler buffer, the processor sends the data packet to a designated processor, i.e., the first processor, at the head of the train through the local area communication module. And the first processor sends the data packet to a train receiving terminal and/or a storage module and/or a data center according to a preset mechanism. The data center can be understood as an external train state monitoring platform.

According to the state monitoring method and system of the coupler buffering device, the sensors are used for detecting all data of the coupler buffering device in real time, analyzing the state of the coupler buffering device according to all data, and preferentially sending the data in the emergent state of the coupler buffering device to the data center, so that workers can know the state of the coupler buffering device quickly, the maintenance efficiency of the coupler buffering device is improved, and the safety of a train is guaranteed.

Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.