KR100369560B1 - Balance monitor system of railroad and Balance method thereof - Google Patents
Balance monitor system of railroad and Balance method thereof Download PDFInfo
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- KR100369560B1 KR100369560B1 KR10-2000-0032682A KR20000032682A KR100369560B1 KR 100369560 B1 KR100369560 B1 KR 100369560B1 KR 20000032682 A KR20000032682 A KR 20000032682A KR 100369560 B1 KR100369560 B1 KR 100369560B1
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- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 50
- 238000004891 communication Methods 0.000 claims abstract description 17
- 238000013500 data storage Methods 0.000 claims abstract description 10
- 238000007689 inspection Methods 0.000 claims abstract description 10
- 230000002159 abnormal effect Effects 0.000 claims description 11
- 230000005856 abnormality Effects 0.000 claims description 9
- 230000001133 acceleration Effects 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 claims 2
- 238000005096 rolling process Methods 0.000 claims 1
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- 238000010586 diagram Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
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- 238000005336 cracking Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
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Classifications
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- 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
- B61L15/0081—On-board diagnosis or maintenance
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- 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
- B61L15/0036—Conductor-based, e.g. using CAN-Bus, train-line or optical fibres
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- 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
- B61L15/0045—Destination indicators, identification panels or distinguishing signs on the vehicles
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- 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
- B61L15/0072—On-board train data handling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/04—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/04—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault
- B61K9/06—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault by detecting or indicating heat radiation from overheated axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/12—Measuring or surveying wheel-rims
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L2205/00—Communication or navigation systems for railway traffic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
본 발명은 철도의 대차 감시시스템 및 그 감시방법에 관한 것으로서, 차축온도, 대차의 균열상태, 바퀴마모, 바퀴 편마모의 대차상태를 감시하기 위해 부착한 대차상태감시 센서부, 상기 대차상태감시 센서부로부터 출력된 신호들을 수집 및 분석하여 경보를 출력하거나 데이터베이스화하여 데이터 저장장치에 기록하는 주제어반부를 구비한 대차감시시스템부, 상기 대차감시 시스템부로부터 통신선을 통해 시리얼 통신으로 대차의 현상태와 기록된 데이터를 전송받아 대차의 검수를 지원하는 철도차량 모니터링 시스템부로 구성함으로써, 열차의 자체를 지탱하는 대차의 상태를 사람의 감각으로 확인하지 않고 대차와 바퀴에 센서를 부착하여 이를 수집, 분석 및 저장하여 차축온도, 바퀴의 마모, 바퀴편마모 및 대차의 피로균열과 같은 대차의 상태를 자동으로 점검하여 그 상태를 승무원이 수시로 확인할 수 있음으로써, 운전업무와 검수업무에 효율을 증대시킬 수 있으며, 이상발생시 경보를 발생시켜 안전 사고를 미연에 방지할 수 있는 효과를 갖는다.The present invention relates to a trolley bogie monitoring system and a monitoring method thereof, the bogie state monitoring sensor unit attached to monitor the bogie state of the axle temperature, the crack state of the bogie, wheel wear, wheel wear, the bogie state monitoring sensor unit Balance monitoring system unit having a main control unit for collecting and analyzing the signals output from the output and outputting an alarm or database to record in the data storage device, the status of the balance and recorded in the serial communication through the communication line from the balance monitoring system It consists of a railroad vehicle monitoring system that supports the inspection of trucks by receiving data, and collects, analyzes and stores them by attaching sensors to the trucks and wheels without checking the status of the trucks supporting the train itself with the human sense. Bogie condition such as axle temperature, wheel wear, wheel wear and bogie fatigue crack Automatically checked as you can check the status crews often, which can increase efficiency in business operation and inspection tasks, has the effect that can be caused by a fault occurs alert to prevent safety accidents.
Description
본 발명은 철도 차량의 대차감시 시스템 및 그 방법에 관한 것으로, 특히 열차의 차체를 지탱하는 대차의 상태를 사람의 감각으로 확인하지 않고 대차와 바퀴에 센서를 부착하여 이를 수집, 분석 및 저장하여 대차의 상태를 자동으로 점검한 후 그 상태를 승무원이 수시로 확인하며 운전업무와 검수업무에 효율을 증대시켜 이상 발생시 경보를 발생시켜 안전 사고를 미연에 방지하기 위한 것이다.The present invention relates to a trolley monitoring system and a method thereof, and in particular, the sensor is attached to the trolley and the wheels without collecting a human sense of the state of the trolley supporting the body of the train and collects, analyzes and stores them. The crew checks the status automatically after checking the status of the system and increases the efficiency in the driving and inspection tasks and raises an alarm when an abnormality occurs to prevent safety accidents.
기존에는 차축온도만을 측정하여 이상발생시 경보 램프를 점등하는 정도이며, 대차의 피로 균열이나 바퀴의 마모, 바퀴의 편마모 등은 정비사의 유관 또는 청각을 이용하여 측정하여야 함으로써 운전 중에는 이를 측정할 수 없고, 사람의 감각에 의존함으로 인해 신뢰성에도 문제가 있었다.In the past, only the axle temperature is measured and the alarm lamp is turned on when an abnormality occurs. The fatigue crack, wheel wear, wheel wear, etc. of the truck should be measured by the mechanic's pipe or hearing. There was a problem with credibility because of dependence on human senses.
상기 문제를 해결하기 위해 본 발명은, 차축온도, 바퀴의 마모, 바퀴편마모, 대차의 피로균열과 같은 철도차량 대차의 상태를 운전중에도 지속적으로 감시하기위해 대차에 센서를 설치하여 연결된 주 제어반부에서 상기 센서로부터 감지된 신호를 수집, 분석하고 대차의 상태를 승무원에게 제공하여 안전사고를 미연에 방지하고 신속, 정확한 조치 및 수집 데이터를 데이터베이스화하여 저장하였다가 검수 시 이에 대한 원인 규명을 지원할 수 있도록 대차 감시시스템 및 그 방법을 제공하는 것을 목적으로 한다.In order to solve the above problems, the present invention, in the main control panel connected by installing a sensor in the trolley to continuously monitor the condition of the railroad car bogies such as axle temperature, wheel wear, wheel wear, fatigue cracking of the bogie during operation Collect and analyze the signals detected from the sensor and provide the crew with the status of the truck to prevent accidents and to store the database of prompt, accurate measures and collection data and to help identify the cause of the inspection. It is an object of the present invention to provide a balance monitoring system and a method thereof.
상기 목적을 달성하기 위해 본 발명은, 차축온도, 대차의 균열상태, 바퀴마모, 바퀴 편마모의 대차상태를 감시하기 위해 부착한 대차상태감시 센서부, 상기 대차상태감시 센서부로부터 출력된 신호들을 수집 및 분석하여 경보를 출력하거나 데이터베이스화하여 데이터 저장장치에 기록하는 주제어반부를 구비한 대차감시시스템부, 상기 대차감시 시스템부로부터 통신선을 통해 시리얼 통신으로 대차의 현상태와 기록된 데이터를 전송받아 대차의 검수를 지원하는 철도차량 모니터링 시스템부를 포함하는 것을 특징으로 한다.In order to achieve the above object, the present invention, the bogie condition monitoring sensor unit attached to monitor the bogie condition of the axle temperature, the crack state of the bogie, wheel wear, wheel wear, collecting the signals output from the bogie state monitoring sensor unit And a balance monitoring system unit having a main control unit for analyzing and outputting an alarm or making a database and recording the data in a data storage device, and receiving the status of the balance and recorded data through serial communication through a communication line from the balance monitoring system unit. It characterized in that it comprises a railroad vehicle monitoring system to support the inspection.
또한 상기 목적을 달성하기 위해 본 발명은, 주 제어반부는 전원이 켜지면 시스템의 입·출력 및 모든 시스템을 초기화한 후 차축 온도센서로부터의 입력을 받아 검사하여 비정상이면 경보를 출력하는 제 1 단계와, 상기 차축온도 이상유무 판단 후 정상이면 바퀴회전수 입력 개시 명령을 받아 바퀴회전수 감시센서로부터 바퀴회전수 입력을 개시하는 제 2 단계와, 상기 바퀴회전수 입력 개시 후 주행거리가 입력되면 바퀴마모 계산을 판단하여 비정상이면 비상경보를 출력하고, 정상인 경우는 단선게이지 센서와 초음파센서로부터 센서입력을 받아 그 데이터를 연계분석하여 대차의 균열유무를 판단하는 제 3 단계와, 상기 대차의 균열유무 판단후 비정상이면 경보를 출력하고, 정상인 경우에는 가속도센서와 마이크로폰센서로부터 센서입력을 받아 입력된 데이터를 데이터베이스와 연계분석하여 대차의 바퀴편마모 유무를 판단하는 제 4 단계와, 상기 대차의 바퀴편마모 유무 판단 후 비정상이면 경보를 출력하고, 정상인 경우에는 수집된 정보를 분석하여 데이터 저장부에 저장하고 수집된 정보에 대한 모니터링 시스템의 타 장치로부터의 요구여부를 판단하는 제 5 단계 및 상기 타장치로부터의 요구여부 판단 후 타 장치가 상기 수집된 정보를 요구하는 경우 수집, 저장된 데이터 정보를 요구한 장치에 통신모듈을 통해 전송하는 제 6 단계를 포함하는 것을 또 다른 특징으로 한다.In order to achieve the above object, the present invention, the main control panel is a first step of outputting an alarm if the abnormality is detected by receiving input from the axle temperature sensor after initializing the input and output of the system and all the system when the power is turned on; And a second step of starting wheel speed input from a wheel speed monitoring sensor when the wheel speed input is input after determining whether the axle temperature is abnormal or not, and when the driving distance is input after the wheel speed input is started, wheel wear The third step of judging the calculation, if the abnormality outputs an emergency alarm, and if normal, receives the sensor input from the disconnection gauge sensor and the ultrasonic sensor and analyzes the data in a linked manner to determine whether the balance is cracked or not; If it is abnormal, it outputs an alarm. If it is normal, it receives sensor input from acceleration sensor and microphone sensor. The fourth step of judging whether there is wheel wear on the balance by analyzing the collected data with a database; and if an abnormality is detected after judging whether there is wheel wear on the balance, an alarm is output, and when collected, the collected information is analyzed and stored in the data storage. And a fifth step of determining whether the monitoring system requests the collected information from another device, and when the other device requests the collected information after determining whether the other device requests the collected information, requesting the collected and stored data information. Another feature is a sixth step of transmitting to a device via a communication module.
본 발명의 대차 감시시스템은 시리얼 통신으로 철도차량 모니터링 시스템과 연결하여 수집된 데이터 및 각종 정보를 공유하며 동작할 수 있다.The balance monitoring system of the present invention can operate by sharing the collected data and various information by connecting to the railway vehicle monitoring system through serial communication.
도 1 은 본 발명이 적용되는 철도차량 대차 감시시스템의 전체 시스템 구성 도,1 is an overall system configuration diagram of a railway vehicle balance monitoring system to which the present invention is applied;
도 2 는 본 발명의 철도차량 대차 상태 감시 센서 위치 구조도,2 is a position diagram of the position of the railroad car bogie condition monitoring sensor of the present invention,
도 3 은 본 발명의 철도차량 대차 감시시스템의 주 제어반부 구성도,3 is a block diagram of the main control panel of the railway vehicle balance monitoring system of the present invention,
도 4 는 본 발명의 철도차량 대치 감시시스템의 주 제어반부 감시흐름도.4 is a monitoring flow chart of the main control panel of the railway vehicle replacement monitoring system of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
100 : 대차감시 시스템부 110 : 주 제어반부100: balance monitoring system 110: main control panel
111 : 필터부 112 : 신호 증폭부111 filter unit 112 signal amplification unit
113 : 신호 변환부 114 : 데이터베이스부113: signal conversion unit 114: database unit
115 : 중앙 제어부 116 : 통신 모듈부115: central control unit 116: communication module unit
117 : 데이터 저장부 118 : 표시부117: data storage unit 118: display unit
120 : 대차 상태 감시 센서부 121 : 온도감지 센서부120: balance state monitoring sensor unit 121: temperature detection sensor unit
122 : 바퀴회전수 감시 센서부 123 : 가속도센서부122: wheel rotation speed monitoring sensor unit 123: acceleration sensor unit
124 : 마이크로폰 센서부 125 : 대차부124: microphone sensor unit 125: balance unit
126 : 차축부 117 : 바퀴부126: axle portion 117: wheel portion
128 : 단선게이지 센서부 129 : 초음파 센서부128: disconnection gauge sensor unit 129: ultrasonic sensor unit
150 : 통신선 200 : 철도차량 모니터링 시스템150: communication line 200: railway vehicle monitoring system
이하 첨부된 도면을 참조하여 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 1 은 본 발명이 적용되는 철도차량 대차 감시시스템의 전체 시스템 구성도로서, 차축온도, 대차의 균열상태, 바퀴마모, 바퀴 편마모 등을 측정하기 위해 부착한 대차상태감시 센서부(120)와 상기 센서부로부터 출력된 신호들을 수집 및 분석하여 경보를 출력하거나 데이터베이스화하여 데이터 저장장치에 기록하는 주 제어반부를 구비한 대차 감시시스템부(100) 및 상기 대차감시 시스템부로부터 통신선(150)을 통해 시리얼 통신으로 대차의 현상태와 기록된 데이터를 전송받아 대차의 검수를 지원하는 철도차량 모니터링 시스템부(200)로 이루어져 있다.1 is a diagram showing the overall system configuration of a railway vehicle balance monitoring system to which the present invention is applied, and a bogie state monitoring sensor unit 120 and the attached state for measuring axle temperature, crack state of a truck, wheel wear, wheel wear, and the like. Collects and analyzes the signals output from the sensor unit to output an alarm or make a database and record the data in the data storage device. The balance monitoring system unit 100 having a main control panel unit and the serial communication line 150 from the balance monitoring system unit. It consists of a railroad vehicle monitoring system 200 for supporting the inspection of the balance by receiving the status of the balance and the recorded data by communication.
도 2 는 본 발명의 철도차량 대차 상태 감시 센서 위치 구조도로서, 각 차축에 부착된 바퀴의 베어링 부위에 설치되어 온도를 전기적 신호로 변환하여 주 제어반부(110)로 전달하는 온도감지 센서부(121), 바퀴와 근접한 xxxx에 설치하여 바퀴의 회전운동을 전기적 신호로 변환하여 상기 주 제어반부(110)로 전달하는 바퀴회전수 감지 센서부(122), 바퀴와 근접한 xxxx에 설치하여 기차의 주행시 바퀴에서 발생되는 진동을 감지하여 이를 전기적 신호로 변환하여 상기 주 제어반부(110)로 전달하는 가속도 센서부(123), 바퀴와 근접한 xxxx에 설치하여 기차의 주행시 바퀴에서 발생되는 진동을 감지하여 이를 전기적 신호로 변환한 후 주 제어반부(110)로 전달하는 마이크로폰센서부(124), 대차의 상부에 설치하여 임피던스를 전기적 신호로 변환하여 이를 상기 주 제어반부(110)로 전달하는 단선게이지 센서부(128) 및 대차 상부에 설치하여 지속적인 초음파를 방출하고 이에 반사되는 음파를 전기적 신호로 변환하여 상기 주 제어반부(110)로 전달하는 초음파 센서부(129)로 이루어져 있다.FIG. 2 is a structural diagram illustrating the position of a railroad car bogie condition monitoring sensor according to an embodiment of the present invention, which is installed at a bearing portion of a wheel attached to each axle and converts a temperature into an electrical signal and transmits the temperature to the main control panel 110. ), Installed in the xxxx close to the wheel to convert the rotational movement of the wheel into an electrical signal to the wheel rotation speed sensor unit 122 to transmit to the main control panel 110, installed in the xxxx close to the wheel wheels when running the train To detect the vibration generated from the acceleration sensor unit 123 to transmit to the main control panel 110, the xxxx in close proximity to the wheel to detect the vibration generated from the wheel during the driving of the train The microphone sensor unit 124 to convert the signal to the main control panel 110, and installed in the upper portion of the trolley, converts the impedance into an electrical signal and converts it into an electrical signal. The disconnection gauge sensor unit 128 to be transmitted to the unit 110 and the ultrasonic sensor unit 129 which is installed on the upper portion of the trolley emits continuous ultrasonic waves and converts the sound waves reflected therefrom into electrical signals and transmits them to the main control panel 110. )
도 3 은 본 발명의 철도차량 대차 감시시스템의 주 제어반부 구성도이다.3 is a block diagram of the main control panel of the railroad vehicle monitoring system of the present invention.
그 구성을 보면, 상기 각 센서로부터 상기 주 제어반부(110)로 전달된 아날로그 전기적신호를 필터링하는 필터부(111), 상기 필터링된 신호를 증폭하는 신호 증폭부(112), 증폭된 신호를 디지털 전기적 신호로 변환하여 전달하는 신호 변환부(113), 변환된 신호를 전달받아 각 센서로부터의 신호를 분석하여 표시하고 경보를 발생시키는 표시부(117)와 외부의 다른 장치가 분석정보 및 경보 상태 등의 정보 요구시 분석된 데이터와 경보 상태를 전송하는 통신모듈(116)과 분석된 데이터를 데이터베이스화하는 데이터베이스부(114) 및 데이터베이스화된 경보 상태를 저장하여 저장된 데이터를 대차의 검수 등 각종 분석에 이용되도록 하는 데이터 저장부(118) 각각으로 신호를 전달하는 중앙제어부(115)로 이루어져 있다.In the configuration, the filter unit 111 for filtering the analog electrical signal transmitted from each sensor to the main control panel unit 110, the signal amplification unit 112 for amplifying the filtered signal, the amplified signal The signal converting unit 113 converts and transmits the electrical signal, and the display unit 117 which receives the converted signal to analyze and display the signal from each sensor and generates an alarm and the analysis information and the alarm state. Communication module 116 for transmitting the analyzed data and alarm status upon request of information, database 114 for databaseing the analyzed data, and databased alarm state are stored for various analysis such as inspection of the balance. It consists of a central control unit 115 for transmitting a signal to each of the data storage unit 118 to be used.
도 4 는 본 발명의 철도차량 대치 감시시스템의 주 제어반부 감시흐름도로서, 주 제어반부(110)는 전원이 켜지면(S1) 먼저 시스템의 입·출력 및 모든 시스템을 초기화(S2)한 후 차축 온도센서부(121)로부터 차축 온도센서로부터의 입력을 받아 검사하고(S3) 차축온도의 이상유무를 판단한(S4) 후 비정상이면 경보를 출력한다(S15).Figure 4 is a monitoring flow chart of the main control panel of the railway vehicle replacement monitoring system of the present invention, the main control panel 110, the power is turned on (S1) first the input and output of the system and all the system (S2) and then the axle After receiving the input from the axle temperature sensor from the temperature sensor unit 121 and inspecting it (S3) and determining whether there is an abnormality of the axle temperature (S4), if it is abnormal, an alarm is output (S15).
상기 차축온도의 이상유무 판단(S4) 후 정상이면 바퀴회전수 입력 개시 명령을 받아 바퀴회전수 감지센서부(122)로부터 바퀴회전수 입력을 개시(S5)한 후 주행거리가 입력되면(S6) 일련의 공식에 따라 바퀴마모 계산을 판단하여(S7) 비정상이면 경보를 출력한다(S15). 이때, 철도 차량에 사용되는 바퀴는 통상적으로 사용 가능한 범위의 직경이 정해져 있으므로, 먼저 상기 주행거리를 회전수로 나누어 바퀴의 원주길이를 계산한 후, 구해진 원주길이를 바퀴직경을 구하는 공지의 수식, 즉 "바퀴의 직경=원주길이/2π"에 대입하여 바퀴직경을 계산한 다음, 구해진 바퀴직경을 소정의 기준치와 비교하여 바퀴의 마모정도의 비정상 여부를 판단한다.만약, 정상이면 단선게이지 센서부(128)와 초음파센서부(129)로부터 센서입력을 받아(S8) 그 데이터를 데이터베이스부(114)와 연계분석하여 대차의 균열유무를 판단한다(S9). 이때, 대차의 균열여부는 기본적으로 대차의 표면에 내부를 향하여 초음파펄스를 보내고 흠, 결함 등에서의 반사파를 받아 전기신호로 바꾸어 대차 내부의 결함을 찾아내는 공지의 "초음파 탐상법"을 이용하며, 본 발명에서는 0.5∼10MHz 정도의 초음파 임펄스를 대차의 표면에 투입하여 그것이 결함에 부딪쳐서 반사되어 오는 강도 및 시간으로써 결함의 크기, 위치를 탐지한다.만약, 비정상이면 경보를 출력하고(S15), 정상이면 가속도센서부(123)와 마이크로폰센서부(124)로부터 센서입력(S10)을 받아 그 데이터를 데이터베이스부(114)와 연계분석하여 대차의 바퀴편마모 유무를 판단한(S11) 후 비정상의 경우에는 경보를 출력한다(S15). 이때, 상기 가속도센서부(123)는 공지의 압전형 가속도계로서 압전소자(Piezoelectric materials)의 역학적 성질을 전기적 성질로 변환시키는 효과를 이용하며, 실제로 압전소자의 극성방향에 대해 힘을 가하면 양쪽 면에 발생하는 전하에 의해 전위차가 생기게 되고, 이 전위차는 가한 힘의 크기에 비례하므로 정확한 진동량을 측정할 수 있게 된다. 또한, 상기 마이크로폰센서부(124)는 공지된 바와 같이 일정 주파수대에서 발생하는 소음의 정도를 측정하므로, 이 두가지 센서부를 이용하여 바퀴의 편마모에 의해 발생하는 진동량의 변화와 소음의 변화를 측정하여 바퀴의 편마모 유무를 판별한다.If it is normal after determining whether the axle temperature is abnormal (S4), and receives a wheel speed input start command, the wheel speed input is started from the wheel speed detection sensor unit 122 (S5), and then a driving distance is input (S6). The wheel wear calculation is judged according to a series of formulas (S7) and if it is abnormal, an alarm is output (S15). In this case, since the wheels used in the railroad vehicle have a diameter in a range generally available, a known formula for calculating the circumferential length of the wheel after dividing the traveling distance by the number of revolutions, and then obtaining the wheel diameter from the obtained circumferential length, In other words, the wheel diameter is calculated by substituting the wheel diameter = circumferential length / 2π and then the obtained wheel diameter is compared with a predetermined reference value to determine whether the wheel wear is abnormal. The sensor input is received from the 128 and the ultrasonic sensor unit 129 (S8) and the data is analyzed in conjunction with the database unit 114 to determine whether there is a crack of the truck (S9). At this time, whether the crack of the trolley is basically a known "ultrasound flaw detection method" that sends an ultrasonic pulse toward the inside of the trolley and receives the reflected wave from the flaw, defect, etc. and converts it into an electrical signal to find the internal defect of the trolley. In the present invention, an ultrasonic impulse of about 0.5 to 10 MHz is put on the surface of the trolley, and the magnitude and position of the defect are detected by the intensity and time when it hits the defect and is reflected. If abnormal, an alarm is output (S15). After receiving the sensor input S10 from the acceleration sensor unit 123 and the microphone sensor unit 124 and analyzing the data in association with the database unit 114 to determine the presence of wheel wear of the truck (S11), in case of abnormality, an alarm is issued. Output (S15). In this case, the acceleration sensor unit 123 is a known piezoelectric accelerometer, which utilizes the effect of converting the mechanical properties of piezoelectric materials into electrical properties. An electric potential difference is generated by the generated electric charges, and the electric potential difference is proportional to the magnitude of the applied force, so that an accurate amount of vibration can be measured. In addition, since the microphone sensor unit 124 measures the degree of noise generated in a predetermined frequency band as is known, by using the two sensor unit to measure the change in the vibration amount and the noise generated by the uneven wear of the wheel Determine if the wheel is worn out.
상기 바퀴편마모 유무 판단(S11) 후 정상이면 수집된 정보를 분석하여 데이터 저장부(118)에 저장하고(S12), 수집된 정보를 모니터링 시스템 등 타 장치가 요구하는지를 판단하여(S13) 타 장치가 상기 수집된 정보를 요구할 경우 수집, 저장된 데이터 정보를 요구한 장치에 통신 모듈부(116)를 통해서 전송한다(S14).After determining whether the wheel piece wear is normal (S11), the collected information is analyzed and stored in the data storage unit 118 (S12), and it is determined whether other devices such as a monitoring system require the collected information (S13). When the collected information is requested, the collected and stored data information is transmitted through the communication module unit 116 (S14).
상술한 바와 같이 본 발명은, 열차의 자체를 지탱하는 대차의 상태를 사람의 감각으로 확인하지 않고 대차와 바퀴에 센서를 부착하여 이를 수집, 분석 및 저장하여 차축온도, 바퀴의 마모, 바퀴편마모 및 대차의 피로균열과 같은 대차의 상태를 자동으로 점검하여 그 상태를 승무원이 수시로 확인할 수 있음으로써, 운전업무와 검수업무에 효율을 증대시킬 수 있으며, 이상발생시 경보를 발생시켜 안전 사고를 미연에 방지할 수 있는 효과를 갖는다.As described above, the present invention, without checking the state of the bogie supporting the train itself with a human sense, attaching sensors to the bogie and the wheels, collecting, analyzing and storing them, the axle temperature, wheel wear, wheel wear and The crew can check the condition of the truck automatically, such as fatigue cracking of the truck, and can check the status from time to time, which can increase the efficiency in driving and inspection tasks. It has an effect that can be done.
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| KR101990676B1 (en) | 2017-03-30 | 2019-06-19 | 한국철도공사 | A Method for Producing a Diagnosing Database of a Train Bearing with a Plural of Detecting Modules |
| KR102094105B1 (en) | 2019-07-12 | 2020-03-26 | 한국철도공사 | A System for Diagnosing a Rail Train Based on a Plural of Parameters and a Method for Diagnosing the Same |
| KR102082078B1 (en) | 2019-07-12 | 2020-02-26 | 한국철도공사 | A System for Investigating a Train Bearing with a Structure of Processing a Detected Information by a Collector |
| US20220153324A1 (en) * | 2020-11-13 | 2022-05-19 | The Board Of Regents Of The University Of Texas System | Wireless onboard railroad bearing condition monitoring system |
| CN112590860A (en) * | 2020-12-10 | 2021-04-02 | 长春理工大学 | Intelligent optical fiber sensor monitoring system for rail transit |
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