JPH11227607A - Train position detecting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the cost and to improve the accuracy by detecting the train position by a means which detects the travelling distance on the basis of the rotational frequency of axle and the wheel diameter, and the absolute position between the routes on the ground. SOLUTION: The rotational frequency of an axle is measured by an axle rotation sensor (TG) 2 of a travelling train 1 to output the same to a tranvelling distance detecting part 3, and the travelling distance of the train 1 is calculated to be output to a train position detecting part 4. A mounted camera 8 continuously takes the pictures of the kilometer indicators 7 at a constant period to output the same to an image recognition processing part 9 for reading the absolute position to output the same to a train position detecting part 4. The absolute position is output to a train information transmitting part 5 as the train position to be used as the reference when calculating the train position, and the deviation of the train position caused by the error of the wheel-diameter and the skidding in the braking is corrected by resetting (R) the travelling distance of the travelling distance detecting part 3. The car information transmitting part 5 addes the information uniformly indicating the train 1 to the train position from the train position detecting part 4, to transmit the same to a ground device through an antenna 6 for transmitting the car information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train position detecting system for detecting a running train position.

[0002]

2. Description of the Related Art FIGS. 8 and 9 show a conventional train position detecting system shown in, for example, "Electrical Overview for Railway Engineers, Signal Series 9, Track Circuit" issued by Japan Railway Technical Association. FIG. 8 is a diagram showing a case where there is no train, and FIG. 9 is a diagram showing a case where a train is present. In each figure, 30 is a rail, 31
Is a track relay, 32 is a power supply, 33 is a current limiting resistance, 34 is a current when the train is not on track, 35 is a wheel, 36 is an axle,
Reference numeral 37 denotes a current when the train is on the train. Here, rail 30, track relay 31, power supply 32 and current limiting resistor 33
Loop constitutes a closed circuit track circuit for detecting a train position.

Next, the operation will be described. When the train is not on the train, the current 34 from the power supply 32 flows as shown in FIG. 8, and the track relay 31 is activated. The state of the track relay 31 is sent to a monitoring device (not shown) of all trains.
On the other hand, when the train is on-rail, the rails 30 are short-circuited by the wheels 35 and the axles 36, the current 37 from the power supply 32 flows as shown in FIG. 9, and the track relay 31 falls, that is, becomes inactive. . Therefore, by monitoring the state of the track relay 31 for all the rails with the monitoring device, it is possible to detect on which rail the train is located.

[0004]

However, since the conventional train position detecting system is configured as described above, the absolute position accuracy substantially depends on the length of the track circuit. It is necessary to shorten the track circuit length, and to install many track circuits over the entire rail.
As a result, there are problems that the installation cost is high and the detection accuracy is low. The present invention has been made to solve the above-mentioned conventional problems, and has as its object to obtain a train position detection system with high absolute position accuracy at low cost.

[0005]

According to a first aspect of the present invention, there is provided a train position detecting system for detecting a position of a train in a line based on a traveling distance of the train from information related to a wheel of the train, and arbitrarily detecting a position on the ground. In the train position detection system for notifying the train position to the train, first detecting means for detecting the running distance of the train from the number of revolutions of the axle of the train and the wheel diameter, and second detecting for detecting the absolute position between ground lines And information transmitting means for detecting and selectively transmitting the train position based on the traveling distance from the first detecting means and the absolute position from the second detecting means.

According to a second aspect of the present invention, in the train position detecting system according to the first aspect of the present invention, the second detecting means is installed at a side of a track on the ground and includes a kilometer sign indicating an absolute position between the lines. And an image recognition processing unit that reads an absolute position from an image captured by the vehicle-mounted camera.

According to a third aspect of the present invention, in the train position detecting system according to the first aspect of the present invention, the second detecting means is provided beside the track on the ground and emits a laser indicating an absolute position between the lines. It comprises a transmitter, a laser receiver for receiving a laser from the laser transmitter, and a laser information processing unit for reading an absolute position from information received by the laser receiver.

According to a fourth aspect of the present invention, in the train position detecting system according to the first aspect of the present invention, the second detecting means is installed beside a track on the ground and emits a radio wave indicating an absolute position between the lines. It comprises a transmitter, a receiver for receiving a radio wave from the radio transmitter, and a reception information processing unit for reading an absolute position from information received by the receiver.

According to a fifth aspect of the present invention, in the train position detecting system according to any one of the first to fourth aspects, the information transmitting means includes: Train position detection for detecting and outputting the train position from the traveling distance from the first detecting means and, when there is an absolute position input from the second detecting means, outputting the input absolute position as the train position. And an on-board information transmitting unit for transmitting information for identifying the train position and the train to the ground apparatus based on the output from the train position detecting unit.

According to a sixth aspect of the present invention, in the train position detecting system according to the fifth aspect of the present invention, the train position detecting section resets the mileage by using the absolute position as a reference for calculating the train position from the mileage. Then, it corrects the error of the wheel diameter and the deviation of the train position due to the sliding at the time of braking.

A train position detecting system according to a seventh aspect of the present invention detects the position of a train in a line based on the travel distance of the train from information related to the wheels of the train, and notifies the train position on the ground as needed. In the train position detecting system, first detecting means for detecting the running distance of the train from the rotation speed of the axle of the train and the wheel diameter, and second detecting means for detecting the passing of the train and detecting the absolute position of the train from the passing position. And information transmitting means for detecting and selectively transmitting the train position based on the traveling distance from the first detecting means and the absolute position from the second detecting means. .

In a train position detecting system according to an eighth aspect of the present invention, in the invention of the seventh aspect, the second detecting means includes: a ground camera for photographing column number information indicating a train number; An image recognition processing unit that reads a train number from a captured image and detects an absolute position of the train based on the train number, and a transmission / reception unit that transmits absolute position information from the image recognition processing unit to the information transmission unit. Have

A train position detecting system according to a ninth aspect of the present invention is the train position detecting system according to the seventh aspect, wherein the second detecting means is mounted on the train and emits a laser including train number information; Laser information processing means for receiving and processing laser light from the laser transmitter; and transmission / reception means for transmitting processing information from the laser information processing means to the information transmission means as train absolute position information. .

According to a tenth aspect of the present invention, in the train position detecting system according to the seventh aspect of the present invention, the second detecting means includes a radio transmitter mounted on the train for transmitting train number information; Radio information processing means for receiving and processing radio waves from the equipment, and transmission / reception means for transmitting processing information from the radio information processing means to the information transmission means as absolute position information of the train.

According to an eleventh aspect of the present invention, in the train position detecting system according to any one of the seventh to tenth aspects, the information transmitting means includes: Train position detection for detecting and outputting the train position from the traveling distance from the first detecting means and, when there is an absolute position input from the second detecting means, outputting the input absolute position as the train position. And an on-board information transmitting unit for transmitting information for identifying the train position and the train to the ground apparatus based on the output from the train position detecting unit.

In a twelfth aspect of the present invention, in the train position detecting system according to the eleventh aspect, the train position detecting section resets the mileage by using the absolute position as a reference for calculating the train position from the mileage. Then, it corrects the error of the wheel diameter and the deviation of the train position due to the sliding at the time of braking.

A train position detecting system according to a thirteenth aspect of the present invention detects the position of a train in a line based on the travel distance of the train from information related to the wheels of the train, and notifies the position of the train on the ground as needed. In the train position detecting system, first detecting means for detecting the running distance of the train from the number of revolutions of the axle of the train and the wheel diameter, and provided on the ground, detecting the passing of the train and detecting the absolute position of the train from the passing position. Second to detect
And information processing means for detecting and selectively transmitting the train position based on the traveling distance from the first detecting means and the absolute position from the second detecting means. .

According to a fourteenth aspect of the present invention, in the train position detecting system according to the thirteenth aspect, the second detecting means includes: a ground camera for photographing column number information indicating a train number; An image recognition processing unit that reads a train number from a captured image and detects an absolute position of the train based on the train number.

According to a fifteenth aspect of the present invention, in the train position detecting system according to the thirteenth aspect, the information processing means receives and stores travel distance information from the first detecting means, If there is no absolute position input from the image recognition processing unit, the train position is calculated and output based on the traveling distance information from the storage unit.If there is an absolute position input from the image recognition processing unit, the train position is input. And a train position calculation unit for outputting the absolute position as a train position.

In a train position detecting system according to a sixteenth aspect of the present invention, in the invention according to the fifteenth aspect, the train position calculating section performs the second detection when an absolute position is input from the image recognition processing section. The absolute position from the means is used as a reference for calculating the train position from the running distance, and the error of the wheel diameter and the deviation of the train position due to the sliding at the time of braking are corrected.

A train position detecting system according to a seventeenth aspect of the present invention is the train position detecting system according to any one of the first to sixteenth aspects, wherein the first detecting means comprises: an axle rotational speed sensor for detecting an axle rotational speed of the train; The running distance detecting unit detects the running distance of the train from the axle speed detected by the axle speed and the wheel diameter.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a block diagram showing a main configuration of the first embodiment of the present invention. In the figure, reference numeral 1 denotes a train whose position is to be detected, 2 denotes an axle rotation speed sensor (hereinafter referred to as TG) for detecting the axle rotation speed of the train, 3
A traveling distance detection unit detects the traveling distance of the train from the axle rotation speed and the wheel diameter by TG2. Reference numeral 4 denotes a train position detecting section for detecting a train position from the running distance detected by the running distance detecting section 3, and 5 is an on-vehicle for transmitting information for identifying the train position and the train to a ground device (not shown). Information transmission unit,
Reference numeral 6 denotes an on-vehicle information transmitting antenna for performing transmission.

Reference numeral 7 denotes a kilometer-marked road which is installed beside the track on the ground and describes an absolute position between the lines, 8 denotes a vehicle-mounted camera for photographing the kilometer-sign 7, and 9 denotes an image taken by the vehicle-mounted camera 8. An image recognition processing unit for reading the absolute position. When there is no absolute position input from the image recognition processing unit 9, the train position detection unit 4 outputs the train position based on the traveling distance from the traveling distance detection unit 3 to the onboard information transmission unit 5, and performs image recognition. When an absolute position is input from the processing unit 9, the input absolute position is output to the on-board information transmitting unit 5 as a train position. Here, TG2
The traveling distance detector 3 constitutes a first detector, the vehicle-mounted camera 8 and the image recognition processor 9 constitute a second detector, and the train position detector 4, the on-board information transmitter 5, and the transmitter The on-vehicle information transmitting antenna 6 for performing the information constitutes an information transmitting means.

Next, the operation will be described. In the traveling train 1, the rotation speed of the axle is measured by the TG 2 and output to the traveling distance detection unit 3. The travel distance detection unit 3 calculates the travel distance of the train 1 from the axle rotation speed from the TG 2 and the wheel diameter, and outputs the calculated travel distance to the train position detection unit 4. On the other hand, the on-vehicle camera 8 continues to photograph the kilometer sign 7 at regular intervals while the train 1 is running.
The captured image is output to the image recognition processing unit 9. The image recognition processing unit 9 recognizes the image captured by the onboard camera 8, reads out the absolute position described on the kilometer mark 7, and outputs it to the train position detection unit 4.

Therefore, when there is no absolute position input from the image recognition processing section 9, the train position detecting section 4 adds the traveling distance from the traveling distance detecting section 3 to calculate the train position and transmit the on-board information. When the absolute position is input from the image recognition processing unit 9, the absolute position is output to the on-board information transmitting unit 5 as the train position, and the absolute position is output to the train from the mileage. By resetting (R) the travel distance of the travel distance detection unit 3 as a reference for calculating the position, the train position error due to wheel diameter error and sliding during braking is corrected. The onboard information transmission unit 5 attaches information uniquely indicating the train 1 to the train position from the train position detection unit 4,
The information is transmitted to the ground equipment via the on-vehicle information transmitting antenna 6.

As described above, according to the present embodiment, while the train is running, the kilometer sign is caught by the onboard camera.
Outputs the train position detected based on the travel distance obtained from the axle rotation speed and the wheel diameter.On the other hand, when the kilometer sign is captured by the on-board camera, the absolute position obtained from the captured image is output as the train position. Therefore, the train position can be detected at an arbitrary point in time and with a small number of facilities without depending on the length of the rail, so that the cost of the apparatus can be reduced. In addition, the running distance used for train position detection is reset with the absolute position obtained from the captured image, and the train position deviation due to wheel diameter errors and sliding during braking is corrected, so the train position can be accurately determined. Can be detected.

Embodiment 2 FIG. FIG. 2 is a block diagram showing a main configuration of the second embodiment of the present invention. In FIG. 2, portions corresponding to those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted. In the figure, reference numeral 10 denotes a laser transmitter (hereinafter, referred to as a laser marker) which is installed beside a track on the ground and transmits a laser indicating an absolute position between the routes, 11 denotes a laser receiver for receiving a laser from the laser marker 10, Reference numeral 12 denotes a laser information processing unit for reading an absolute position from information received by the laser receiver 11.

In this case, when there is no absolute position input from the laser information processing unit 12, the train position detection unit 4 outputs the train position based on the traveling distance from the traveling distance detection unit 3 to the onboard information transmission unit 5. When an absolute position is input from the laser information processing unit 12, the input absolute position is output to the on-board information transmitting unit 5 as a train position. Here, the laser marker 10, the laser receiver 11, and the laser information processing unit 12 constitute a second detection unit.

Next, the operation will be described. In the traveling train 1, the rotation speed of the axle is measured by the TG 2 and output to the traveling distance detection unit 3. The travel distance detection unit 3 calculates the travel distance of the train 1 from the axle rotation speed from the TG 2 and the wheel diameter, and outputs the calculated travel distance to the train position detection unit 4. The laser receiver 11 receives the laser from the laser marker 10 and outputs received information to the laser information processing unit 12. The laser information processing unit 12 processes the information from the laser receiver 11, reads out the absolute position, and outputs the absolute position to the train position detecting unit 4.

The train position detecting section 4 includes the laser information processing section 1
If there is no absolute position input from the traveling distance detection unit 3
The train position is calculated by adding the mileage from the vehicle, and the train position is calculated and output to the on-board information transmitting unit 5. If an absolute position is input from the laser information processing unit 12, the input absolute position is regarded as the train position and the on-board information is calculated. By outputting to the transmitting unit 5, the absolute position is used as a reference for calculating the train position from the running distance, and the running distance of the running distance detection unit 3 is reset, so that the train position due to the wheel diameter error or the sliding at the time of braking is reset. Correct the deviation. The onboard information transmission unit 5 attaches information uniquely indicating the train 1 to the train position from the train position detection unit 4 and transmits the information to the ground device via the onboard information transmission antenna 6.

As described above, in the present embodiment, the train position detected based on the running distance obtained from the axle rotation speed and the wheel diameter is output until the laser from the laser marker is received while the train is running. On the other hand, when the laser from the laser marker is received, the absolute position obtained from the reception information included in the laser is output as the train position. The position of the train can be detected by the equipment, thereby making it possible to reduce the cost of the device. In addition, the running distance used for train position detection is reset with the absolute position obtained from the received information, and errors in wheel diameters and deviations in the train position due to sliding during braking are corrected, so the train position can be accurately determined. Can be detected.

Embodiment 3 FIG. FIG. 3 is a block diagram showing a main configuration of the third embodiment of the present invention. 2, parts corresponding to those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted. In the figure, reference numeral 13 denotes a strongly directional radio transmitter (hereinafter, referred to as a radio marker) which is installed beside the track on the ground and transmits radio waves indicating the absolute position between the routes, and 14 receives a radio wave from the radio marker 13. For the receiver, 15
Is a reception information processing unit for reading an absolute position from information received by the receiver 14.

In this case, if there is no absolute position input from the reception information processing unit 15, the train position detection unit 4 outputs the train position based on the traveling distance from the traveling distance detection unit 3 to the on-board information transmission unit 5. When an absolute position is input from the reception information processing unit 15, the input absolute position is output to the on-board information transmitting unit 5 as a train position.
Here, the radio wave transmitter 13, the receiver, and the reception information processing unit constitute a second detection unit.

Next, the operation will be described. In the traveling train 1, the rotation speed of the axle is measured by the TG 2 and output to the traveling distance detection unit 3. The travel distance detection unit 3 calculates the travel distance of the train 1 from the axle rotation speed from the TG 2 and the wheel diameter, and outputs the calculated travel distance to the train position detection unit 4. The receiver 14 receives radio waves from the radio wave marker 13 and receives the received information from the reception information processing unit 1.
5 is output. The reception information processing unit 15 processes the information from the receiver 14, reads out the absolute position, and reads the train position detection unit 4
Output to

The train position detecting section 4 includes a reception information processing section 15
If there is no absolute position input from the vehicle, the travel distance from the travel distance detection unit 3 is added to calculate the train position and output to the on-board information transmission unit 5. In this case, the input absolute position is output as a train position to the on-board information transmitting unit 5, and the absolute position is used as a reference for calculating the train position from the mileage, and the mileage of the mileage detecting unit 3 is reset. By doing so, the deviation of the train position due to the wheel diameter error and the sliding during braking is corrected. The onboard information transmission unit 5 attaches information uniquely indicating the train 1 to the train position from the train position detection unit 4 and transmits the information to the ground device via the onboard information transmission antenna 6.

As described above, according to the present embodiment, the train position detected based on the running distance obtained from the axle rotation speed and the wheel diameter until the radio wave from the radio wave marker is received during the running of the train. On the other hand, when the radio wave from the radio wave marker is received, the absolute position obtained from the reception information included in the radio wave is output as the train position, so at any time without depending on the length of the rail Moreover, the position of the train can be detected with a small number of facilities, so that the cost of the apparatus can be reduced. In addition, the running distance used for train position detection is reset with the absolute position obtained from the received information, and errors in wheel diameters and deviations in the train position due to sliding during braking are corrected, so the train position can be accurately determined. Can be detected.

Embodiment 4 FIG. FIG. 4 is a block diagram showing a main configuration of the fourth embodiment of the present invention. 4, parts corresponding to those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted. In the figure, 16 is a column number display section for displaying train numbers, and 17 is a train passage information receiving antenna 1.
A train passing information receiving unit for receiving train passing information from 8 and reading an absolute position from the train passing information.
Ground camera for capturing the column number information displayed in
Reference numeral 0 denotes an image recognition processing unit for reading a train number from an image captured by the ground camera 19. That is, the image recognition processing unit 20 performs image processing on the image of the ground camera 19 to detect the passage of the train, thereby substantially detecting the absolute position of the train from the passage position. Reference numeral 21 denotes a train passage information transmitting unit that transmits information uniquely indicating the passing train number and the absolute position information from the image recognition processing unit 20 to the train 1 via the passage information transmitting antenna 22.

In this case, when there is no absolute position input from the train passage information receiving unit 17, the train position detecting unit 4 sends the train position based on the running distance from the running distance detecting unit 3 to the on-board information transmitting unit 5. When an absolute position is input from the train passing information receiving unit 17, the input absolute position is output to the on-board information transmitting unit 5 as a train position. Here, the ground camera 19, the image recognition processing unit 2
0, the train passing information transmitting unit 21, the passing information transmitting antenna 22, the train passing information receiving antenna 18, and the train passing information receiving unit 17 constitute a second detecting unit. Credit antenna 22, train passing information receiving antenna 18, and train passing information receiving unit 17
Constitute transmission / reception means.

Next, the operation will be described. In the traveling train 1, the rotation speed of the axle is measured by the TG 2 and output to the traveling distance detection unit 3. The travel distance detection unit 3 calculates the travel distance of the train 1 from the axle rotation speed from the TG 2 and the wheel diameter, and outputs the calculated travel distance to the train position detection unit 4. When the train 1 approaches, the ground camera 19 starts capturing column number information displayed on the column number display unit 16 and outputs a captured image to the image recognition processing unit 20. The image recognition processing unit 20 performs recognition processing of the captured image from the ground camera 19, reads out the column number described in the column number display unit 16, and outputs it to the train passage information transmitting unit 21. The train passing information transmitting unit 21 transmits information uniquely indicating the passing train number and absolute position information via the passing information transmitting antenna 22,
Send to train 1. The absolute position information transmitted to the train 1 is received by the train passing information receiving antenna 18 and supplied to the train passing information receiving unit 17, where the absolute position is read from the information.

If there is no absolute position input from the train passage information receiving unit 17, the train position detecting unit 4 calculates the train position by adding the running distance from the running distance detecting unit 3 and calculates the train position. When the absolute position is input from the train passing information receiving unit 17, the input absolute position is output as the train position to the on-board information transmitting unit 5, and the absolute position is calculated from the mileage. By resetting the running distance of the running distance detection unit 3 as a reference for the correction of the train position, the deviation of the train position due to the wheel diameter error and the sliding at the time of braking is corrected. The onboard information transmission unit 5 attaches information uniquely indicating the train 1 to the train position from the train position detection unit 4 and transmits the information to the ground device via the onboard information transmission antenna 6.

As described above, in this embodiment, while the train is running, until the train number information is obtained by the ground camera,
The train position detected based on the travel distance obtained from the axle rotation speed and the wheel diameter is output.On the other hand, when the train column number information is obtained by the ground camera, the absolute position obtained from the column number information is output to the train. Since the position is output, the position of the train can be detected at an arbitrary time and with a small number of facilities without depending on the length of the rail, so that the cost of the apparatus can be reduced. In addition, the running distance used for detecting the train position is reset with the absolute position obtained from the column number information, and errors in the wheel diameter and deviations in the train position caused by sliding during braking are corrected. The position can be detected.

Embodiment 5 FIG. FIG. 5 is a block diagram showing a main configuration of the fifth embodiment of the present invention. 5, parts corresponding to those in FIGS. 1 and 4 are denoted by the same reference numerals, and detailed description thereof will be omitted. In the figure, reference numeral 23 denotes a train position detector on the ground.
Is the train position calculating unit 23a, the train information receiving antenna 2
3b and a memory 23c for storing a value from the traveling distance detecting unit 3 when the train passes in front of the ground camera 19, that is, a traveling distance.

The train position detector 23 is an example provided at a monitoring center or the like on the ground. Therefore,
Particularly, in this case, the antenna and the like are not shown, and thus are not shown. Here, the ground camera 19 and the image recognition processing unit 20 constitute a second detection unit, and the train position calculation unit 2
The 3a and the memory 23c constitute information processing means.

Next, the operation will be described. In the traveling train 1, the rotation speed of the axle is measured by the TG 2 and output to the traveling distance detection unit 3. The travel distance detection unit 3 calculates the travel distance of the train 1 from the axle rotation speed from the TG 2 and the wheel diameter, and sends the calculated travel distance to the on-board information transmission unit 5. The on-board information transmitting unit 5 transmits the traveling distance together with the information uniquely indicating the train number to the train position detector 23 via the on-board information transmitting antenna 6.

When the train 1 approaches, the ground camera 19 starts photographing the column number information displayed on the column number display section 16 and outputs the photographed image to the image recognition processing section 20. Image recognition processing unit 2
In the case of 0, the image captured from the ground camera 19 is recognized and the column number described in the column number display section 16 is read out and output to the train position detection section 23a. At the same time, the train position detecting unit 2
3a stores the traveling distance of each train 1 received by the train information receiving antenna 23b from the on-board information transmitting unit 5 via the transmitting antenna 6 at that time in the memory 23c.

When there is no input of a train number from the image recognition processing unit 20, the train position detecting unit 23a subtracts a value obtained by subtracting the value stored in the memory 23c from the running distance from the running distance detecting unit 3 to obtain the value of the train. The train position is calculated by adding to the distance from the starting point to the ground camera 19. On the other hand, the train position detector 2
3a, when the train number is input from the image recognition processing unit 20, the absolute position corresponding to the ground camera 19 is set as the train position, and the error of the wheel diameter and the shift of the train position due to the sliding at the time of braking are corrected.

As described above, in the present embodiment, during the running of the train, until the train number information is obtained by the ground camera,
The train position detected based on the travel distance obtained from the axle rotation speed and the wheel diameter is output.On the other hand, when the train column number information is obtained by the ground camera, the absolute position obtained from the column number information is output to the train. Since the position is output, the position of the train can be detected at an arbitrary time and with a small number of facilities without depending on the length of the rail, so that the cost of the apparatus can be reduced. In addition, the travel distance used for detecting the train position is corrected with the absolute position obtained from the column number information, and errors in the wheel diameter and deviations in the train position caused by sliding during braking are corrected. The position can be detected.

Embodiment 6 FIG. FIG. 6 is a block diagram showing a main configuration of the sixth embodiment of the present invention. 6, parts corresponding to those in FIGS. 1 and 4 are denoted by the same reference numerals, and detailed description thereof will be omitted. In the figure, reference numeral 24 denotes a laser marker attached to the train 1 and emits a laser carrying a modulated wave indicating train number information, reference numeral 25 denotes a laser receiver provided on the ground to receive a laser beam from the laser marker 24, and reference numeral 26 denotes a ground. And a laser information processing unit that processes the laser light from the laser receiver 25. Here, the laser marker 24, the laser receiver 25, and the laser information processing unit 26 constitute a second detection unit, and the laser receiver 25 and the laser information processing unit 26 constitute a laser information processing unit.

Next, the operation will be described. In the traveling train 1, the rotation speed of the axle is measured by the TG 2 and output to the traveling distance detection unit 3. The travel distance detection unit 3 calculates the travel distance of the train 1 from the axle rotation speed from the TG 2 and the wheel diameter, and outputs the calculated travel distance to the train position detection unit 4. Laser marker 24
Transmits a laser with a modulated wave indicating train number information. When receiving the laser beam from the laser transmitter 24, the laser receiver 25 sends the laser beam to the laser information processing unit 26. The laser information processing section 26 demodulates the laser light, reads out the column number, and outputs it to the train passage information transmitting section 21. The train passage information transmitting unit 21 transmits information uniquely indicating a passing train number and absolute position information to the train 1 via the passing information transmitting antenna 22. The absolute position information transmitted to the train 1 is received by the train passing information receiving antenna 18 and supplied to the train passing information receiving unit 17, where the absolute position is read from the information.

If there is no absolute position input from the train passage information receiving unit 17, the train position detecting unit 4 calculates the train position by adding the running distance from the running distance detecting unit 3 and calculates the train position. When the absolute position is input from the train passing information receiving unit 17, the input absolute position is output as the train position to the on-board information transmitting unit 5, and the absolute position is used as the train position from the mileage. The basis for calculation,
By resetting the running distance of the running distance detection unit 3, the deviation of the train position due to the wheel diameter error and the sliding at the time of braking is corrected. The onboard information transmission unit 5 attaches information uniquely indicating the train 1 to the train position from the train position detection unit 4 and transmits the information to the ground device via the onboard information transmission antenna 6.

As described above, in the present embodiment, the running distance obtained from the axle rotation speed and the wheel diameter until the train number information from the laser transmitter to the laser receiver is obtained during running of the train. The train position detected on the basis of is output, on the other hand, when the column number information of the train from the laser transmitter to the laser receiver is obtained, the absolute position obtained from the column number information is output as the train position, The train position can be detected at an arbitrary point in time and with a small number of facilities without depending on the length of the rail, so that the cost of the apparatus can be reduced. In addition, the running distance used for detecting the train position is reset with the absolute position obtained from the column number information, and errors in the wheel diameter and deviations in the train position caused by sliding during braking are corrected. The position can be detected.

Embodiment 7 FIG. FIG. 7 is a block diagram showing a main configuration of Embodiment 7 of the present invention. 7, parts corresponding to those in FIGS. 1 and 4 are denoted by the same reference numerals, and detailed description thereof will be omitted. In the figure, 27 is a radio transmitter (radio wave marker) having strong directivity for transmitting train number information attached to the train 1, 28 is a terrestrial radio wave receiving unit for receiving radio waves from the radio wave marker 27, and 29 is A radio wave information processing unit provided on the ground for analyzing radio waves from the terrestrial radio wave receiving unit 28 and reading out a column number. Here, the radio wave marker 27, the terrestrial radio wave reception unit 28, and the radio wave information processing unit 29 constitute a second detection unit.
The radio wave information processing section 29 constitutes a radio wave information processing means.

Next, the operation will be described. In the traveling train 1, the rotation speed of the axle is measured by the TG 2 and output to the traveling distance detection unit 3. The travel distance detection unit 3 calculates the travel distance of the train 1 from the axle rotation speed from the TG 2 and the wheel diameter, and outputs the calculated travel distance to the train position detection unit 4. The radio wave marker 27
Transmits radio waves with different wavelengths and waveforms for each train. When receiving the radio wave, the terrestrial radio wave receiving unit 28
Send to The radio wave information processing unit 29 analyzes the received radio wave, reads out the column number, and outputs it to the train passage information transmitting unit 21. The train passage information transmitting unit 21 transmits information uniquely indicating a passing train number and absolute position information to the passage information transmitting antenna 2.
2 to the train 1. The absolute position information transmitted to the train 1 is received by the train passing information receiving antenna 18 and supplied to the train passing information receiving unit 17, where the absolute position is read from the information.

When there is no absolute position input from the train passage information receiving unit 17, the train position detecting unit 4 calculates the train position by adding the running distance from the running distance detecting unit 3 and calculates the train position. When the absolute position is input from the train passing information receiving unit 17, the input absolute position is output as the train position to the on-board information transmitting unit 5, and the absolute position is used as the train position from the mileage. The basis for calculation,
By resetting the running distance of the running distance detection unit 3, the deviation of the train position due to the wheel diameter error and the sliding at the time of braking is corrected. The onboard information transmission unit 5 attaches information uniquely indicating the train 1 to the train position from the train position detection unit 4 and transmits the information to the ground device via the onboard information transmission antenna 6.

As described above, in this embodiment, during the running of the train, the train number is obtained from the axle rotation speed and the wheel diameter until the train number information contained in the radio wave from the radio wave marker to the ground radio wave receiving unit is obtained. The train position detected based on the distance traveled is output. On the other hand, when the column number information of the train included in the radio wave to the ground radio wave receiving unit is obtained from the radio wave marker, the absolute position obtained from the column number information is obtained. Is output as the train position,
The train position can be detected at an arbitrary point in time and with a small number of facilities without depending on the length of the rail, so that the cost of the apparatus can be reduced. In addition, the running distance used for detecting the train position is reset with the absolute position obtained from the column number information, and errors in the wheel diameter and deviations in the train position caused by sliding during braking are corrected. The position can be detected.

[0056]

As described above, according to the first aspect of the present invention, the position of the train in the line is detected based on the travel distance of the train from the information related to the wheels of the train, and the train position is constantly determined on the ground. In the train position detection system, the first detection means for detecting the running distance of the train from the number of revolutions of the axle of the train and the wheel diameter, the second detection means for detecting the absolute position between the ground lines, The travel distance from the first detection means and the second
And information transmitting means for detecting and selectively transmitting the train position based on the absolute position from the detecting means, so that a train position detecting system with high detection accuracy can be obtained at low cost.

According to the second aspect of the present invention, the second detecting means is mounted on the side of the track on the ground and shoots a kilometer sign indicating the absolute position between the lines, and the camera detects the sign. Since the image recognition processing unit reads the absolute position from the obtained image, it is possible to contribute to a reduction in the cost of the apparatus and to improve the detection accuracy.

According to the third aspect of the present invention, the second detecting means includes a laser transmitter which is installed beside the track on the ground and transmits a laser indicating an absolute position between the tracks, and a laser from the laser transmitter. Since it is composed of a laser receiver for receiving and a laser information processing section for reading an absolute position from information received by the laser receiver, it is possible to contribute to a reduction in the cost of the apparatus and to improve the detection accuracy.

According to the fourth aspect of the present invention, the second detecting means includes a radio wave transmitter which is installed beside the track on the ground and transmits a radio wave indicating an absolute position between the lines, and transmits a radio wave from the radio wave transmitter. Since the receiver includes a receiver for receiving and a reception information processing unit that reads an absolute position from information received by the receiver, it is possible to contribute to a reduction in the cost of the apparatus and to improve the detection accuracy.

According to the fifth aspect of the invention, when there is no absolute position input from the second detecting means, the information transmitting means detects and outputs the train position from the traveling distance from the first detecting means. When an absolute position is input from the second detecting means, a train position detecting unit that outputs the input absolute position as a train position, and a train position and a train position based on the output from the train position detecting unit. Has an on-board information transmitting unit for transmitting information for identifying the information to the ground device, so that it is possible to contribute to the cost reduction of the device and to improve the detection accuracy.

According to the sixth aspect of the invention, the train position detecting unit uses the absolute position as a reference for calculating the train position from the running distance, resets the running distance, and corrects the wheel diameter error or the slippage during braking. Since the deviation of the train position is corrected, there is an effect that the train position can be detected with high accuracy.

According to the invention of claim 7, a train position detecting system for detecting the position of the train in the line based on the running distance of the train from the information related to the wheels of the train and notifying the train position on the ground as needed. A first detecting means for detecting the running distance of the train from the rotation speed of the axle of the train and the wheel diameter; a second detecting means for detecting the passing of the train and detecting the absolute position of the train from the passing position; And information transmitting means for detecting and selectively transmitting the train position based on the traveling distance from the first detecting means and the absolute position from the second detecting means, so that the train position detection with high detection accuracy is provided. There is an effect that the system can be obtained at low cost.

According to the eighth aspect of the present invention, the second detecting means reads the train number from the image taken by the ground camera and the ground camera for taking the column number information indicating the train number, and reads the train number. Since it has an image recognition processing unit that detects the absolute position of the train based on the, and a transmitting and receiving unit that transmits the absolute position information from the image recognition processing unit to the information sending unit,
There is an effect that the cost can be reduced and the detection accuracy can be improved.

According to the ninth aspect of the present invention, the second detecting means is a laser transmitter mounted on the train for transmitting a laser including train number information, and receives and processes laser light from the laser transmitter. Laser information processing means, and transmission / reception means for transmitting processing information from the laser information processing means to the information transmission means as absolute train position information, thereby contributing to a reduction in the cost of the apparatus and improving detection accuracy. There is an effect that can be.

According to the tenth aspect of the present invention, the second detecting means is a radio wave transmitter attached to the train for transmitting train number information, and a radio wave information processing device for receiving and processing radio waves from the radio wave transmitter. Means, and transmitting and receiving means for transmitting the processing information from the radio wave information processing means to the information transmitting means as the absolute position information of the train, which can contribute to a reduction in the cost of the apparatus,
Moreover, there is an effect that the detection accuracy can be improved.

According to the eleventh aspect of the present invention, when there is no absolute position input from the second detecting means, the information transmitting means
A train position detecting unit that detects and outputs a train position from a traveling distance from the first detecting unit and, when there is an absolute position input from the second detecting unit, outputs the input absolute position as a train position. And an on-board information transmitting unit for transmitting information for identifying the train position and the train to the ground device based on the output from the train position detecting unit, thereby contributing to a reduction in the cost of the device and the detection accuracy. There is an effect that can be improved.

According to the twelfth aspect of the present invention, the train position detector uses the absolute position as a reference for calculating the train position from the traveling distance, resets the traveling distance, and corrects the wheel diameter error or the slippage during braking. Since the deviation of the train position is corrected, there is an effect that the train position can be detected with high accuracy.

According to the thirteenth aspect of the present invention, the train position detecting system detects the position of the train in the line based on the running distance of the train from the information related to the wheels of the train, and notifies the train position on the ground at any time. In the first, a first detecting means for detecting the running distance of the train from the number of revolutions of the axle of the train and the wheel diameter,
A second detecting means provided on the ground for detecting the passing of the train and detecting the absolute position of the train from the passing position; and a travel distance from the first detecting means and an absolute distance from the second detecting means. Since the information processing means for detecting the train position based on the position and selectively transmitting the train position is provided, there is an effect that a train position detection system with high detection accuracy can be obtained at low cost.

According to the fourteenth aspect of the invention, the second detecting means reads the train number from the image taken by the ground camera and the ground camera for taking the column number information indicating the train number, and And an image recognition processing unit for detecting the absolute position of the train based on the image data. Therefore, it is possible to contribute to the cost reduction of the apparatus and to improve the detection accuracy.

According to the fifteenth aspect of the present invention, the information processing means includes a storage means for receiving and storing the traveling distance information from the first detecting means, and an information processing means, when there is no absolute position input from the image recognition processing section. A train position is calculated and output based on the travel distance information from the storage means, and when there is an absolute position input from the image recognition processing unit, a train position calculation unit that outputs the input absolute position as a train position is provided. Therefore, there is an effect that it is possible to contribute to the cost reduction of the apparatus and to improve the detection accuracy.

According to the sixteenth aspect of the present invention, when an absolute position is input from the image recognition processing unit, the train position calculating unit calculates the train position from the traveling distance based on the absolute position from the second detecting means. As a criterion, the error of the wheel diameter and the deviation of the train position due to the sliding at the time of braking are corrected, so that there is an effect that the train position can be detected with high accuracy.

According to the seventeenth aspect of the present invention, the first detecting means includes an axle rotation speed sensor for detecting the axle rotation speed of the train, and an axle rotation speed and a wheel diameter detected from the axle rotation speed. Since it is composed of the traveling distance detecting section for detecting the traveling distance, it is possible to contribute to a reduction in the cost of the device and to improve the detection accuracy.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

FIG. 3 is a block diagram showing a third embodiment of the present invention.

FIG. 4 is a block diagram showing a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing a sixth embodiment of the present invention.

FIG. 7 is a block diagram showing a seventh embodiment of the present invention.

FIG. 8 is an example of a conventional train position detection system, showing a case where a train does not exist on a train.

FIG. 9 is an example of a conventional train position detection system, showing a case where a train is on a train.

[Explanation of symbols]

1 train, 2 axle rotation speed sensor (TG), 3 mileage detector, 4 train position detector, 5 on-board information transmitter, 6
On-vehicle information transmitting antenna, 7 km sign, 8 on-board camera, 9 image recognition processing unit, 10 laser transmitter (laser marker), 11 laser receiver, 12 laser information processing unit, 13 radio transmitter (radio marker), 14 receiver, 15 reception information processing section, 16 column number display section, 17
Train passing information receiving unit, 18 Train passing information receiving antenna, 19 Ground camera, 20 Image recognition processing unit, 21
Train passing information transmitting unit, 22 Train passing information receiving antenna, 23 Train position detecting device, 23a Train position detecting unit, 23b Onboard information receiving unit, 23c memory, 24
Laser transmitter (laser marker), 25 laser receiver 26 laser information processor, 27 radio transmitter (radio marker), 28 terrestrial radio receiver, 29 radio information processor.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04B 10/22 H04B 9/00 A 10/00

Claims (17)

[Claims] 1. A train position detection system for detecting the position of a train in a line based on the travel distance of the train from information related to the wheels of the train and notifying the train position on the ground as needed. First detecting means for detecting the running distance of the train from the number and the wheel diameter; second detecting means for detecting the absolute position between ground lines; and the running distance from the first detecting means and the second detecting means. And information transmitting means for selectively detecting and transmitting the train position based on the absolute position from the detecting means. 2. The on-vehicle camera which is installed beside a railway track on the ground and captures a kilometer sign indicating an absolute position between tracks, and detects the absolute position from an image captured by the on-vehicle camera. 2. The train position detection system according to claim 1, further comprising an image recognition processing unit for reading. 3. A laser transmitter installed at a side of a track on the ground and transmitting a laser indicating an absolute position between tracks, and a laser receiver receiving a laser from the laser transmitter. 2. The train position detection system according to claim 1, further comprising a laser information processing unit for reading an absolute position from information received by said laser receiver. 4. The radio communication device according to claim 1, wherein the second detection means includes a radio wave transmitter installed on the side of the ground track for transmitting a radio wave indicating an absolute position between the lines, a receiver for receiving a radio wave from the radio wave transmitter,
2. The train position detection system according to claim 1, further comprising a reception information processing unit for reading an absolute position from information received by said receiver. 5. The information transmitting means detects and outputs a train position from a traveling distance from the first detecting means when there is no absolute position input from the second detecting means, and outputs the train position.
If there is an absolute position input from the detecting means, a train position detecting unit that outputs the input absolute position as a train position, and information identifying the train position and the train based on the output from the train position detecting unit The train position detecting system according to any one of claims 1 to 4, further comprising: an on-board information transmitting unit that transmits the information to the ground device. 6. The train position detecting section uses the absolute position as a reference for calculating a train position from a running distance, resets the running distance, and corrects a train position error due to a wheel diameter error or a sliding during braking. The train position detection system according to claim 5, wherein 7. A train position detection system for detecting the position of a train in a line based on the travel distance of the train from information related to the wheels of the train and notifying the train position on the ground as needed. First detecting means for detecting the running distance of the train from the number and the wheel diameter; second detecting means for detecting the passage of the train and detecting the absolute position of the train from the passing position; A train position detecting system, comprising: information transmitting means for detecting and selectively transmitting a train position based on a traveling distance from the vehicle and an absolute position from the second detecting means. 8. The second detecting means includes: a ground camera for capturing column number information representing a train number; a train number from an image captured by the ground camera; and a train absolute number based on the train number. 8. The train position detecting system according to claim 7, further comprising: an image recognition processing unit that detects a position; and a transmitting / receiving unit that transmits absolute position information from the image recognition processing unit to the information sending unit. 9. A laser transmitter mounted on a train for transmitting a laser including train number information, a laser information processor for receiving and processing laser light from the laser transmitter. 8. The train position detecting system according to claim 7, further comprising a transmitting / receiving means for transmitting processing information from said laser information processing means as said train absolute position information to said information transmitting means. 10. The radio wave transmitter attached to a train for transmitting train number information, a radio wave information processing means for receiving and processing radio waves from the radio wave transmitter, 8. The train position detecting system according to claim 7, further comprising transmitting / receiving means for transmitting processing information from the processing means to the information transmitting means as train absolute position information. 11. The information transmitting means detects and outputs a train position from a travel distance from the first detecting means when there is no absolute position input from the second detecting means, and outputs the train position. When there is an absolute position input from the detecting means, a train position detecting unit that outputs the input absolute position as a train position, and information for identifying a train position and a train based on the output from the train position detecting unit. An on-vehicle information transmitting unit for transmitting to a ground device is provided.
0. The train position detection system according to any one of 0. 12. The train position detecting unit uses the absolute position as a reference for calculating a train position from a running distance, resets the running distance, and corrects a train position error due to a wheel diameter error or a sliding during braking. 12. The method according to claim 11, wherein
The train position detection system described. 13. A train position detection system for detecting the position of a train in a line based on the travel distance of the train from information related to the wheels of the train and notifying the train position on the ground as needed. A first detecting means for detecting the running distance of the train from the number and the wheel diameter; a second detecting means provided on the ground for detecting the passing of the train and detecting the absolute position of the train from the passing position; A train position detecting system comprising: a train position detecting unit which detects a train position based on a travel distance from the first detecting unit and an absolute position from the second detecting unit and selectively transmits the train position. . 14. The second detecting means includes: a ground camera for capturing column number information indicating a train number; a train number read from an image captured by the ground camera; and a train absolute number based on the train number. 14. The train position detection system according to claim 13, further comprising an image recognition processing unit that detects a position. 15. The information processing means includes: storage means for receiving and storing travel distance information from the first detection means;
If there is no absolute position input from the image recognition processing unit,
A train position calculating unit that calculates and outputs a train position based on the traveling distance information from the storage unit and, when an absolute position is input from the image recognition processing unit, outputs the input absolute position as a train position. The train position detection system according to claim 13, comprising: 16. The train position calculating section, when an absolute position is input from the image recognition processing section, uses the absolute position from the second detecting means as a reference for calculating a train position from a traveling distance. 16. The method according to claim 15, wherein a deviation of a train position due to an error in a wheel diameter or a slide during braking is corrected.
The train position detection system described. 17. The first detecting means includes: an axle rotation speed sensor for detecting an axle rotation speed of a train; and a travel for detecting a travel distance of the train from the axle rotation speed and the wheel diameter detected from the axle rotation speed. The train position detection system according to any one of claims 1 to 16, comprising a distance detection unit.