CN216185157U

CN216185157U - Rail vehicle running state recognition system

Info

Publication number: CN216185157U
Application number: CN202122602489.8U
Authority: CN
Inventors: 段亮; 宋春元; 崔利通; 李晓峰
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-05
Anticipated expiration: 2031-10-28

Abstract

A rail vehicle running state recognition system relates to the field of rail transit vehicles, and can efficiently utilize the existing vehicle-mounted equipment to recognize the running state, thereby improving the running safety of the vehicle and the comfort of passengers; the system comprises an acceleration sensing system arranged on a vehicle body and a state identification unit connected with the acceleration sensing system; the acceleration sensing system is used for acquiring transverse and vertical vibration acceleration at the front end and the rear end of the vehicle body; and the state identification unit is used for receiving the vehicle body vibration data acquired by the acceleration sensing system, processing and analyzing the vehicle body vibration data, and identifying the running state of the vehicle body. The utility model transmits the recognition result to the cab monitoring center and the remote monitoring center through the network communication module, thereby ensuring the vehicle operation safety and improving the passenger comfort.

Description

Rail vehicle running state recognition system

Technical Field

The utility model relates to the field of rail transit vehicles, in particular to a method and a system for identifying the running state of a rail vehicle.

Background

In the running process of the rail vehicle, real-time monitoring of the running state of the vehicle is an important technical means for ensuring the running safety of the vehicle and improving the riding comfort of passengers. When the domestic high-speed motor train unit runs at a high speed, factors influencing the running safety of the motor train unit and the comfort of passengers mainly come from the contact relation of wheel rails and the performance of suspension parts. When the equivalent taper matched with the wheel track is too low, the snaking motion of the bogie can excite the suspension mode of the train body, and the train body of the motor train unit shows obvious low-frequency shaking; when the equivalent taper matched with the wheel track is too high, the snaking motion of the bogie can excite the low-order elastic mode of the train body, and the train body of the motor train unit shows obvious shake; when the anti-snaking shock absorber fails, particularly after the wheel or the steel rail is worn, the snaking instability of the bogie is easy to occur; when other suspension parts of the vehicle have faults, the running stability index of the vehicle body is obviously increased. Once the vehicle is in any of the above states, the safety of the vehicle operation and the comfort of passengers cannot be guaranteed. Therefore, how to identify the running state of the rail vehicle is very urgent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rail vehicle running state recognition system, which can effectively utilize the existing vehicle-mounted equipment to recognize the running state and improve the running safety of the vehicle and the comfort of passengers.

A rail vehicle running state recognition system comprises an acceleration sensing system arranged on a vehicle body and a state recognition processing unit connected with the acceleration sensing system;

the acceleration sensing system is used for acquiring transverse and vertical vibration acceleration data at the front end and the rear end of the vehicle body;

the state recognition processing unit comprises a central computing module for analyzing and calculating the vibration data of the vehicle body, a storage module for storing the vibration data and a network communication module for realizing data transmission; the central computing module is respectively connected with the network communication module and the storage module; and the central computing module is in data transmission with an external upper computer through the network communication module.

Furthermore, the acceleration sensing system comprises a front acceleration sensor and a rear acceleration sensor, wherein the front acceleration sensor and the rear acceleration sensor are respectively and diagonally arranged on the floor in the vehicle, which is 1000mm away from the vehicle body side, of the center of the front bogie and the center of the rear bogie.

Further, the central computing module is a programmable logic controller; the storage module is at least used for storing analysis operation results corresponding to the rail vehicle operation data.

Further, the external upper computer comprises a cab monitoring center and a remote monitoring center, the driver checks the running state of the vehicle through the cab monitoring center, and the remote technician checks the running state of the vehicle through the remote monitoring center.

The utility model has the beneficial effects that: the rail vehicle running state recognition system collects vehicle body vibration data in real time through the acceleration sensing system, the vehicle running state is processed in real time through the state recognition processing unit, and a recognition result is transmitted to the cab monitoring center and the remote monitoring center through the network communication module, so that the vehicle running safety is further ensured, and the passenger comfort is improved.

Drawings

Fig. 1 is a schematic structural diagram of a rail vehicle operation state recognition system according to the present invention.

Fig. 2 is a schematic block diagram of a rail vehicle operating state recognition system according to the present invention.

Detailed Description

First embodiment, the first embodiment is described with reference to fig. 1 and 2, and the rail vehicle operation state identification system includes: the acceleration sensing system is arranged on the vehicle body 1 and comprises a front acceleration sensor 3 and a rear acceleration sensor 4, wherein the front acceleration sensor 3 and the rear acceleration sensor 4 are respectively arranged on the vehicle interior floor of which the center of the front bogie and the center of the rear bogie are deviated to one side of the vehicle body 1 by 1000mm in an opposite angle mode and are used for collecting transverse and vertical vibration acceleration at the front end and the rear end of the vehicle body 1;

the state recognition processing unit 2 is connected with the acceleration sensing system and used for receiving the vehicle body vibration data acquired by the acceleration sensing system and carrying out processing analysis according to a vehicle running state recognition method; the state recognition processing unit 2 comprises a central computing module for analyzing and calculating the vibration data of the vehicle body, a storage module for storing related data and a network communication module for realizing data transmission; the central computing module is respectively connected with the network communication module and the storage module; the central computing module transmits data with an external upper computer through the network communication module, the central computing module, the storage module and the network communication module are all arranged on the circuit board, the storage module can store results processed by the central computing module, and the network communication module can convert information processed by the central computing module into content conforming to a transmission protocol format for transmission.

In this embodiment, the central computing module is a programmable logic controller, and the central computing module is connected with the network communication module in a serial communication manner; the network communication module is provided with a network connection port and a WiFi port; the storage module is at least used for storing the running data of the rail vehicle and the corresponding analysis and operation results.

The external upper computer comprises a driver cab monitoring center and a remote monitoring center, namely, a driver can check the running state of the vehicle through the driver cab monitoring center, and a remote technician can check the running state of the vehicle through the remote monitoring center.

The specific process of identifying by adopting the rail vehicle running state identification system in the embodiment is as follows:

step 1, acquiring transverse and vertical vibration acceleration a at the front end and the rear end of a vehicle body through an acceleration sensing system_FZ(t)、a_FY(t)、a_RZ(t)、a_RY(t), F and R respectively represent the positions of measuring points at the front end and the rear end of the vehicle body, Z and Y respectively represent the vertical direction and the transverse direction, t represents the real-time sampling time, and the sampling frequency is required to be more than 100 Hz;

step 2, preprocessing the real-time data obtained in the step 1;

(1) the real-time data preprocessing comprises the following steps:

(2) performing data processing 1 time every 1 second, processing acceleration data with the length of 5 seconds between t-5 time and t time, namely the size of a data processing window is 5 seconds, the slippage of the window is 1 second, and defining the acceleration data as a_{FZ_5s}、a_{FY_5s}、a_{RZ_5s}、a_{RY_5s}；

(3) Acceleration data a are subjected to a 0.5-2.5 Hz band-pass filter 1_{FZ_5s}、a_{FY_5s}、a_{RZ_5s}、 a_{RY_5s}Filtering to obtain filtered acceleration data a_{FZ_5s_bp1}、a_{FY_5s_bp1}、a_{RZ_5s_bp1}、 a_{RY_5s_bp1}；

(4) Acceleration data a are subjected to a 2-pair acceleration data a by using a 2.5-6 Hz band-pass filter_{FZ_5s}、a_{FY_5s}、a_{RZ_5s}、a_{RY_5s}Filtering to obtain filtered acceleration data a_{FZ_5s_bp2}、a_{FY_5s_bp2}、a_{RZ_5s_bp2}、 a_{RY_5s_bp2}；

(5) Acceleration data a are subjected to a 6-10 Hz band-pass filter 3_{FZ_5s}、a_{FY_5s}、a_{RZ_5s}、a_{RY_5s}Filtering to obtain filtered acceleration data a_{FZ_5s_bp3}、a_{FY_5s_bp3}、a_{RZ_5s_bp3}、 a_{RY_5s_bp3}；

(6) With a_{FZ_5s_bp1}、a_{FY_5s_bp1}、a_{RZ_5s_bp1}、a_{RY_5s_bp1}For the analysis object, the root mean square of the acceleration, defined as rms, is calculated separately_{FZ_bp1}、rms_{FY_bp1}、rms_{RZ_bp1}、rms_{RY_bp1}；

(7) With a_{FZ_5s_bp2}、a_{FY_5s_bp2}、a_{RZ_5s_bp2}、a_{RY_5s_bp2}For the analysis object, the root mean square of the acceleration, defined as rms, is calculated separately_{FZ_bp2}、rms_{FY_bp2}、rms_{RZ_bp2}、rms_{RY_bp2}；

(8) With a_{FZ_5s_bp3}、a_{FY_5s_bp3}、a_{RZ_5s_bp3}、a_{RY_5s_bp3}For the analysis object, respectively calculateRoot mean square acceleration, defined as rms_{FZ_bp3}、rms_{FY_bp3}、rms_{RZ_bp3}、rms_{RY_bp3}；

(9) Acceleration data a is calculated according to a stationarity index calculation method specified in GB5599-2019_{FZ_5s}、 a_{FY_5s}、a_{RZ_5s}、a_{RY_5s}Analyzing to obtain the stationarity indexes of the front end and the rear end of the vehicle body, and defining the stationarity indexes as W_FZ、W_FY、 W_RZ、W_RY；

Step 3, identifying the running state of the vehicle according to preset judgment logic based on the preprocessing result obtained in the step 2, and dividing the running state of the vehicle into five types, namely vehicle shaking, vehicle anti-snaking shock absorber fault, vehicle other suspension component fault, vehicle normal and the like;

(10) according to the result obtained by the calculation in the step 2, if rms_{FY_bp1}、rms_{RY_bp1}Continuously adding 10 times to more than 0.03g (g is 9.81 m/s)₂) While W is_FY、W_RYThe vehicle shaking state is identified when the time exceeds 3.0 continuously for 10 times;

(11) according to the result obtained by the calculation in the step 2, if rms_{FZ_bp3}、rms_{FY_bp3}、rms_{RZ_bp3}、 rms_{RY_bp3}10 times each over 0.02g, with W_FY、W_RYThe vehicle shaking state is identified when the vehicle shaking state exceeds 2.75 times continuously;

(12) according to the result obtained by the calculation in the step 2, if rms_{FZ_bp2}、rms_{FY_bp2}、rms_{RZ_bp2}、 rms_{RY_bp2}10 times each over 0.02g, with W_FZ、W_FY、W_RZ、W_RYIf any part exceeds 2.5 times continuously, identifying the fault state of the vehicle anti-snake movement shock absorber;

(13) according to the result obtained by the calculation in the step 2, if rms_{FZ_bp1}、rms_{FY_bp1}、rms_{RZ_bp1}、 rms_{RY_bp1}Are all continued for 10 times, with rms of 0.03g or less_{FZ_bp2}、rmsFY_{_bp2}、rms_{RZ_bp2}、 rms_{RY_bp2}Are all continued for 10 times, with rms of 0.02g or less_{FZ_bp3}、rmsFY_{_bp3}、rms_{RZ_bp3}、 rms_{RY_bp3}Are all continuously 10 times and not more than 0.02g, and W_FZ、W_FY、W_RZ、W_RYExceeding 3.0 continuously for 10 times, and identifying as the fault state of other suspension components of the vehicle;

(14) and (3) according to the result obtained by the calculation in the step (2), if the judgment of the states of the vehicle shaking, the vehicle anti-snaking shock absorber fault, the vehicle other suspension component fault and the like is not met, the vehicle is identified as a normal state.

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 invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A rail vehicle running state recognition system is characterized in that: the identification system comprises an acceleration sensing system arranged on a vehicle body (1) and a state identification processing unit (2) connected with the acceleration sensing system;

the acceleration sensing system is used for acquiring transverse and vertical vibration acceleration data at the front end and the rear end of the vehicle body (1);

the state recognition processing unit (2) comprises a central computing module for analyzing and calculating the vibration data of the vehicle body, a storage module for storing the vibration data and a network communication module for realizing data transmission; the central computing module is respectively connected with the network communication module and the storage module; and the central computing module is in data transmission with an external upper computer through the network communication module.

2. A rail vehicle operating condition recognition system as claimed in claim 1, wherein: the acceleration sensing system comprises a front acceleration sensor (3) and a rear acceleration sensor (4), wherein the front acceleration sensor (3) and the rear acceleration sensor (4) are respectively and diagonally arranged on the floor in the car, and the center of the front bogie and the center of the rear bogie deviate from one side of the car body (1).

3. A rail vehicle operating condition recognition system as claimed in claim 2, wherein: the front acceleration sensor (3) and the rear acceleration sensor (4) are respectively and diagonally arranged on the floor in the car, which is 1000mm away from one side of the car body (1), of the center of the front bogie and the center of the rear bogie.

4. A rail vehicle operating condition recognition system as claimed in claim 1, wherein: the central computing module is a programmable logic controller; the storage module is at least used for storing analysis operation results corresponding to the rail vehicle operation data.

5. A rail vehicle operating condition recognition system as claimed in claim 1, wherein: the external upper computer comprises a driver cab monitoring center and a remote monitoring center, a driver checks the running state of the vehicle through the driver cab monitoring center, and a remote technician checks the running state of the vehicle through the remote monitoring center.