JPH08228401A - Rail temperature sensor - Google Patents

Abstract

PURPOSE: To realize a sensor which can measure the temperature of a rail without dispatching a person for measurement to a site. CONSTITUTION: The rail temperature sensor comprises an image processor 4 which inputs infrared image information by an infrared image temperature sensor 2 placed in a train 10, inputs position information by a GPS receiver 8 and an autonomous navigation unit 9 and outputs and radio-transmits the position information synchronized with the infrared image information together with the infrared image information and alarm information, and a control console 6 which receives the output signal of the processor 4 installed in a drive command 11 and displays a rail temperature distribution in real time. Thus, the temperature distribution of a desired rail section can be continuously measured in a wide range in a short time. Dispatching of a person for measurement to the vicinity of a rail 1 is eliminated, and a danger of running over a person and killing him by a train can be avoided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail temperature detecting device applied to the operation management of railway vehicles.

[0002]

2. Description of the Related Art The conventional method for detecting the temperature of a rail is shown in FIG.
As shown in, the measurer went out to the site where the rail was installed with a temperature sensor, measured the temperature of the rail between the train traffic, and reported the measurement result to the driving command center. In addition, the operation command center, which received the report, estimated the temperature distribution and strain of the rail based on the reported temperature data and issued a warning.

[0003]

For the conventional detection of the temperature of the rail, it has been necessary to arrange a large number of measuring persons in a wide range over the entire target line. Moreover,
A large number of persons and a lot of time were required to detect the continuous rail temperature distribution by making the intervals of the measurement points sufficiently small.

Further, the temperature of the rail must be measured by a person who measures the train between train runs, which is dangerous. The present invention is intended to solve the above problems.

[0005]

A rail temperature detecting device of the present invention is a global positioning system (hereinafter referred to as GPS) mounted on a train running on a rail and receiving radio waves from a satellite.
A receiver and an autonomous navigation device, an infrared image temperature sensor mounted on the train to detect rails in a non-contact manner, and an infrared image input from the infrared image temperature sensor mounted on the train to input GP
An image processor for inputting position information from the S receiver and the autonomous navigation device, outputting each infrared image information and position information synchronized with each other together with alarm information and wirelessly transmitting the information, and the above image installed at the train operation command center It is characterized by being formed by a control console that receives the output signal of the processor and displays the temperature distribution of the rail in real time.

[0006]

In the present invention, in order to measure the temperature of the rail while the train is running, an infrared image temperature sensor capable of high-speed sampling and an image processor are mounted on the train so that the rail temperature can be maintained at regular intervals. Measure instantly. In order to locate the position where the rail temperature was measured, train
Equipped with an S receiver and an autonomous navigation device, it detects position information synchronized with temperature measurement.

The rail temperature, the temperature measurement position, and the alarm information about the temperature obtained as described above are transmitted from the train to the control console of the driving command center by using the train radio system. Therefore, the temperature distribution of all lines can be displayed by the control console, and the rail temperature can be monitored.

Although normal position information is detected by a GPS receiver, the image processing device continuously inputs the position information because the autonomous navigation device performs it when a train passes through a tunnel or the like. be able to.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A rail temperature detecting device according to an embodiment of the present invention will be described with reference to FIGS. The apparatus of this embodiment shown in FIG. 1 includes a GPS receiver 8 having a GPS antenna 3 provided on a train 10 running on a rail 1, an autonomous navigation device 9, an infrared image temperature sensor 2, an image processor 4, and a train. It is formed by a wireless device 5, a control console 6 provided at a driving command center, and a GPS satellite 7 launched into the sky.

In the above, the infrared temperature sensor 2 mounted on the running train 10 detects the rail 1, forms an infrared image of the rail 1, and transmits the infrared image to the image processor 4 at an appropriate sampling interval for image processing. The container 4 performs image processing and calculates the temperature of the rail 1.

Image processing performed by the image processor 4 will be described with reference to FIG.

The infrared image 12 shown in FIG. 2 input to the image processor 4 has a gradation according to the reference temperature 13, and the reference temperature 13 has the same step as the temperature resolution in the temperature range where the gradation is given. And the temperature is a function of gradation. The rail 1a shown in the infrared image 12 is
The gradation differs according to the reference temperature 13.

The image processor 4 performs the following processing within the sampling interval when the infrared image 12 is sent to the image processor 4. Read pixels of the image including rail 1a (1
4) The gradation of each pixel is determined (15). The pixel of the gradation showing the highest temperature is selected from the pixels showing the rail 1a, and the gradation of the selected pixel is compared with the gradation of the reference temperature 13 to detect the temperature of the rail 1a (16). The above process is performed every time the infrared image 12 is sent to the image processor 4.

Further, the image processor 4 receives the position of the rail 1a from the GPS receiver 8 and the autonomous navigation system 9 and locates the position which is located in synchronization with the rail temperature measurement together with the temperature of the rail 1a and the train radio 5. The wireless device 5 sends it to the control console 6 of the driving command center 11 by digital data transmission.

It should be noted that the image processor 4 uses the GPS satellite 7
When radio waves from the GPS reach, the GPS receiver 8 provided with the GPS antenna 3 inputs position information to perform high-accuracy position location. In a tunnel where radio waves do not reach, the autonomous navigation device 9 locates the position. I do.

The control console 6 provided in the above-mentioned driving command center 11 forms a screen as shown in FIG. 3 from temperature information, position information, alarm information, etc. of the rail 1 sent from the train 10, and the rail in real time. Monitor the temperature distribution of 1.

[0017]

INDUSTRIAL APPLICABILITY The rail temperature detecting device of the present invention is mounted on a train and receives infrared image information from an infrared image temperature sensor, receives position information from a GPS receiver and an autonomous navigation device, and synchronizes with the infrared image information. An image processor that outputs information along with infrared image information and alarm information and wirelessly transmits it, and a control console that is installed at the operating command center and receives the output signal of the image processor and displays the rail temperature distribution in real time This makes it possible to measure the temperature distribution in a desired rail section continuously over a wide range in a short time, eliminating the need for a measurer to be sent near the rail, and avoiding the risk of being hit by a train. Become.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart of image processing according to the above embodiment.

FIG. 3 is an explanatory diagram of a display by the control console according to the above embodiment.

FIG. 4 is an explanatory diagram of a conventional device.

[Explanation of symbols]

 1 Rail 1a Image-displayed rail 2 Infrared image temperature sensor 3 GPS antenna 4 Image processor 5 Train radio 6 Control console 7 GPS satellite 8 GPS receiver 9 Autonomous navigation device 10 Train 11 Driving command center

Claims (1)

[Claims] 1. A global positioning system receiver mounted on a train traveling on rails to receive radio waves from a satellite and an autonomous navigation device, an infrared image temperature sensor mounted on the train for contactlessly detecting the rail, and the train. The infrared image is input from the infrared image temperature sensor installed in the vehicle, the position information is input from the global positioning system receiver and the autonomous navigation device, and the infrared image information and the position information synchronized with each are output together with the alarm information and wirelessly transmitted. A rail temperature detecting device comprising a transmitting image processor and a control console installed at a train operation command center for receiving an output signal of the image processor and displaying a temperature distribution of the rail in real time.