METHOD FOR REDUCING DETECTION DATA OF A MONITORING DEVICE IN A VEHICLE, AND METHOD FOR MONITORING A VEHICLE DEFECT IN NEAR REAL TIME USING SAME

• US 20130268157A1
• Filed: 07/13/2011
• Published: 10/10/2013
• Est. Priority Date: 12/13/2010
• Status: Active Grant

• Current Assignee: Korea Railroad Research Institute
• Original Assignee: Korea Railroad Research Institute
• Inventors: Ok, Min Hwan, Jung, Hyun Seung
• Granted Patent: US 8,935,039 B2
• Time in Patent Office: Days
• US Class Current: 701/31.4
• CPC Class Codes: B60W 2050/021 Means for detecting failure or malfunction
• CPC Class Codes: B60W 2556/45 External transmission of data to or from the vehicle
• CPC Class Codes: B61L 15/0081 On-board diagnosis or maintenance
• CPC Class Codes: B61L 27/50 Trackside diagnosis or maintenance, e.g. software upgrades
• CPC Class Codes: G06F 17/00 Digital computing or data processing equipment or methods, specially adapted for specific functions information retrieval, database structures or file system structures therefor G06F16/00
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: H03M 7/00 Conversion of a code where information is represented by a given sequence or number of digits to a code where the same , similar or subset of information is represented by a different sequence or number of digits

Abstract

A method for reducing data of sensor devices in a vehicle includes collecting detection data periodically from the sensor devices and calculating an average value of the data collected during a cycle. The collected data may be compared with the calculated values and a deviation with previous data may be calculated by an upper and lower value difference method. A difference between the collected data and average values may also be calculated by a deviation method. The calculated value is stored. Data from a plurality of running vehicles may be periodically transmitted to a driving control center in order to monitor devices related to operations of all of the running vehicles in near real time.

Claims

1. A method for reducing data of sensor devices, comprising:

collecting detection data periodically detected from the sensor devices;

calculating an average value of the data collected during a cycle;

comparing each collected data with each calculated average value;

calculating, by an upper and lower value difference method, a deviation with previous data which is equal to or greater than an average value for a data in which a result of the comparing is equal to or greater than the average value, and a deviation with previous data which is less than the average value for a data which is less than the average value; and

storing the deviation value obtained by performing the calculating by the upper and lower value difference method.

2. A method for reducing data of sensor devices, comprising:

collecting detection data periodically detected from the sensor devices;

calculating an average value of the data collected during a cycle;

calculating, by a deviation method, a difference between each data and the average value during the cycle for each collected data; and

storing a deviation value obtained by performing the calculating by the deviation method.

3. A method for monitoring a vehicle defect in near real time, comprising:

collecting detection data periodically detected from a plurality of defect monitoring devices that are installed in a vehicle and monitor a defect associated with an operation of the vehicle;

calculating a deviation from the collected detection data;

generating a frame including the calculated deviation, a unique vehicle number set for each vehicle, a unique device number set in the corresponding vehicle, a final data which is equal to or greater than an average value during a previous cycle, a final data which is less than the average value during the previous cycle, and a bit size to express the deviation;

transmitting the generated data frame to a driving control center;

restoring the data to its original data by calculating each deviation of the previous data and of the bit size unit by distinguishing the transmitted vehicle number and device number in the driving control center; and

detecting a defect in the corresponding device of the vehicle from the restored data.

4. The method for monitoring a vehicle defect in near real time of claim 3, further comprising:

calculating a deviation of the detection data collected in the calculating by an upper and lower value difference method.

5. The method for monitoring a vehicle defect in near real time of claim 3, further comprising:

calculating the deviation of the detection data collected in the calculating by a deviation method.