JP2739428B2 - Vehicle length detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle length detecting device for a rubber tire type vehicle or a floating type vehicle, for example, and more particularly to an improvement in detection accuracy of vehicle lengths of different trains at a stop position.

[0002]

2. Description of the Related Art For example, in a rubber tire type vehicle, a vehicle detection method using a check-in / check-out method has been adopted to detect the position of the vehicle. In this check-in / check-out method, a train detection loop coil is provided as a ground device for each section to be blocked along the running path of the vehicle.
As an on-board device, a check-in signal transmitting unit is provided at the front of the vehicle, and a check-out signal transmitting unit is provided at the rear of the vehicle. When the check-in signal transmitted from the vehicle is received by the train detection loop coil for each block section, it is determined that the front of the vehicle has entered the block section, and the check-out signal is transmitted to the train detection loop coil. , It is determined that a vehicle exists in the block section.

In this traffic system, vehicles are used
In the case of a stop at a home, a method of opening and closing a door of a vehicle and a door of a home in conjunction with each other to ensure passenger safety is often adopted.
In this case, when vehicles of different formations, for example, vehicles of four-car formation and six-car formation are running, it is necessary to open and close the door of the home according to the formation of each vehicle. Therefore, it is necessary to accurately detect the vehicle length.

Conventionally, in order to detect vehicle lengths of different formations, a plurality of light emitters and light receivers are arranged along a home and an optical sensor for detecting the vehicle length based on a signal from the light receiver is used. The method was adopted.

[0005]

As described above, a vehicle length detecting apparatus using an optical sensor requires a plurality of light emitters and light receivers to be installed along a home. In addition, the distance between the vehicle and the home was very narrow, and it was not easy to install the light emitter and the light receiver.

[0006] Also, the optical sensor is greatly affected by the environment,
There was a risk of malfunction due to adhesion of dust and dirt. For this reason, maintenance has to be repeated frequently, and much time has been required for maintenance work.

Furthermore, since the detection range of the optical sensor is narrow and limited, the vehicle length cannot be accurately detected unless the stop position of the vehicle is accurate.

SUMMARY OF THE INVENTION The present invention has been made to solve such a disadvantage, and has as its object to provide a vehicle length detecting device capable of accurately detecting vehicle lengths of different formations with a simple configuration. .

[0009]

A vehicle length detecting apparatus according to the present invention receives an on-vehicle signal transmitted from a vehicle by a train detecting loop coil (7) provided along a traveling path and detects a traveling position of the vehicle. has a vehicle detection method of detecting, in a transportation system two different organization of the vehicle is traveling, Kurumajo instrumentation
Is the check-in signal transmission unit provided in the first car
(12), antenna (13) and the last vehicle
Checkout signal transmission unit (14) and antenna (1)
5), and the check-in signal transmission unit (12) is closed.
The train detection loop coil (7) provided for each section
A check-in signal is generated to inform the entry and the antenna (1
3) Transmit to the ground via the checkout signal transmission unit
(14) shows the presence of a vehicle in the train detection loop coil (7).
Generate checkout signal to inform and antenna (15)
Via the ground, and the ground equipment sends the first vehicle end detection
Loop coil (1) and second vehicle end detection loop coil
(2), a first receiver (3), a second receiver (4), and
A first vehicle end detection loop having a vehicle length determining unit (5).
The coil (1) and the second vehicle end detection loop coil (2)
The on-board signal from the vehicle is received, and the first vehicle
The end detection loop coil (1) is used to stop the vehicle at the home (6).
The train detection loop is positioned at either the rear or front reference position.
The second vehicle end detection is provided in parallel with the coil (7).
The loop coil (2) is a first vehicle detection loop coil
Train detection at a position away from (1) by the length of the long train
A first receiving unit provided in parallel with the loop coil (7);
(3) is connected to the first vehicle end detection loop coil (1).
The vehicle received by the first vehicle end detection loop coil (1)
Select a signal of a predetermined frequency from the upper signal, and select the selected signal.
Reference position indicating that the vehicle is at the stop reference position
The position signal is sent to the vehicle length determining unit (5), and the second receiving unit
(4) is connected to the second vehicle end detection loop coil (2).
And the vehicle received by the second vehicle end detection loop coil (2).
Select a signal of a predetermined frequency from the upper signal, and select the selected signal.
Sends a vehicle length detection signal to the vehicle length determination unit (5) based on the
The vehicle length determining unit (5) receives the transmitted reference position signal and the vehicle length.
The vehicle stopped along the platform (6) by the long detection signal
It is characterized by determining whether it is short or long
I do.

[0010]

According to the present invention, when the vehicle stops at the home, the first vehicle end detection loop coil and the second vehicle end detection loop coil, each having a fixed length and provided on the ground, separate from the vehicle. Receive the transmitted on-board signal. The first receiving unit sends a reference position signal indicating that the rear or front of the stopped vehicle is at the stop reference position to the vehicle length determining unit based on a signal sent from the first vehicle end detection loop coil. The second receiving unit sends a vehicle length signal of the stopped vehicle to the vehicle length determining unit based on a signal sent from the second vehicle end detection loop coil. When the reference position signal from the first receiving unit and the vehicle length detection signal from the second receiving unit are input, the vehicle length determining unit determines that the vehicle having the longer formation out of the two types of vehicle formation has stopped. ,
When only the reference position signal from the first receiving unit is received, it is determined that the vehicle of the short formation has stopped.

[0011]

FIG. 1 is a block diagram showing a ground apparatus according to an embodiment of the present invention. For example, as shown in the figure, a ground length device of a vehicle length detecting device of a traffic system for driving a rubber tire type vehicle of a four-car train and a six-car train, as shown in FIG.
And a second vehicle end detection loop coil 2, a first receiving unit 3, a second receiving unit 4, and a vehicle length determining unit 5. The first vehicle end detection loop coil 1 and the second vehicle end detection loop coil 2 receive an on-board signal from a vehicle, and the first vehicle end detection loop coil 1 is provided with a home 6. Is provided in parallel with the train detection loop coil 7 at a reference position behind the stop of the vehicle, and the second vehicle end detection loop coil 2 is separated from the first vehicle detection loop coil 1 by the length of a six-car train. At a position parallel to the train detection loop coil 7. The first receiving unit 3 is connected to the first vehicle end detection loop coil 1, and selects and selects a signal of a predetermined frequency from the on-board signals received by the first vehicle end detection loop coil 1. A reference position signal indicating that the vehicle is at the stop reference position is sent to the vehicle length determining unit 5 based on the signal. The second receiving unit 4 is connected to the second vehicle end detection loop coil 2 and
A signal of a predetermined frequency is selected from among the on-vehicle signals received by the vehicle end detection loop coil 2 and a vehicle length detection signal is sent to the vehicle length determination unit 5 based on the selected signal. Vehicle length determination unit 5
Determines whether the vehicle stopped along the home 6 is a 4-car train or a 6-car train based on the sent reference position signal and vehicle length detection signal.

As shown in the block diagram of FIG. 2, the on-board device of the above-mentioned traffic system transmits a check-in signal to the leading vehicle 11a to the train detection loop coil 7 provided for each block section to notify the entry of the vehicle. It has a check-in signal transmitting unit 12 and an antenna 13 that generate the signal. Further, the last vehicle 11n has a checkout signal transmitting section 14 for generating a checkout signal for notifying the train detection loop coil 7 of the presence of the vehicle, and an antenna 15.

The operation of the vehicle length detecting device configured as described above will be described with reference to the layout explanatory diagram of FIG.

Vehicle 16 of 4-car train or Vehicle 1 of 6-car train
When the vehicle 7 travels while transmitting a check-in signal and a check-out signal for detecting trains and stops based on the position of the rear end of the home 6, a four-car train 16 or a six-car train 17 The check-out signal transmitted from the check-out signal transmitter 14 provided in the last vehicle is received by the first vehicle-end detection loop coil 1 and sent to the first receiver 3. The first receiving unit 3 receives a four-car train 16 or a six-car train 17 based on the sent check-out signal.
The reference position signal indicating that the rearmost vehicle 11n is at the stop reference position is sent to the vehicle length determination unit 5.

At this time, if the vehicle stopped along the home is the vehicle 16 of the 4-car train, as shown in FIG.
Since the leading vehicle 11a of the vehicles 16 of both trains has not reached the position of the second vehicle end detection loop coil 2, the check-in signal transmitted from the leading vehicle 11a in the second vehicle end detection loop coil 2 Is not received and the vehicle length detection signal is not sent from the second receiving unit 4 to the vehicle length determining unit 5. The stopped vehicle is a six-car train 1
In the case of 7, since the leading vehicle 11a has reached the position of the second vehicle end detection loop coil 2, the check-in signal transmitted from the leading vehicle 11a by the second vehicle end detection loop coil 2 And sends it to the second receiving unit 4. When receiving the check-in signal, the second receiving unit 4 generates a vehicle length detection signal based on the transmitted check-in signal and sends it to the vehicle length determining unit 5. Therefore, when the vehicle length detection signal is not sent from the second receiving unit 4 when the reference position signal is sent from the first receiving unit 3, the vehicle length determining unit 5 determines that the number of stopped vehicles is four. It is determined that the vehicle 16 is a train 16 and the fact is sent to, for example, a door opening / closing control device of the home 7, and the door of the home 7 corresponding to the vehicle 16 having four trains is opened and closed. Also,
When the vehicle length detection signal is sent from the second receiving unit 4 while the reference position signal is sent from the first receiving unit 3, the vehicle length determining unit 5 determines that the stopped vehicle is a six-car train It is determined to be 17 and the fact is outputted.

In the above embodiment, the stop reference position is determined with reference to the last vehicle 11n.
The stop reference position may be determined on the basis of.

[0017]

As described above, according to the present invention, when the vehicle stops at the home, the first vehicle end detection loop coil having a fixed length and the second vehicle end detection provided on the ground. Since the on-board signal transmitted from the vehicle is received by the loop coil and the length of the stopped vehicle is detected, two vehicle end detection loop coils are provided near the traveling path or the home. It suffices to install the equipment, and it is possible to easily install equipment to be installed near the traveling path or the home and to facilitate maintenance and inspection.

Further, since the stopped vehicle length is detected by the vehicle end detection loop coil having a fixed length, the vehicle length can be reliably detected even if the stop position of the vehicle is shifted.

Further, since a conventionally used device can be used as it is as an on-board device, a vehicle length detecting device can be simply configured, and equipment costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a ground apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the on-board device of the embodiment.

FIG. 3 is an explanatory view of the arrangement showing the operation of the embodiment.

[Description of Signs] 1 First vehicle end detection loop coil 2 Second vehicle end detection loop coil 3 First reception unit 4 Second reception unit 5 Vehicle length determination unit 6 Home 7 Train detection loop -Coil 12 check-in signal transmitter 13 antenna 14 check-out signal transmitter 15 antenna

Claims (1)

(57) [Claims] 1. A vehicle detection system that receives an on-board signal transmitted from a vehicle by a train detection loop coil (7) provided along a traveling path and detects a traveling position of the vehicle.
In a traffic system in which vehicles of different types travel, the on-board equipment sends the check-in signal provided to the leading vehicle.
Shinbu (12), antenna (13) and the last vehicle
Checked-out signal transmitter (14) and antenna
(15), and the check-in signal transmission section (12)
The train detection loop coil (7) provided for each block section
Generates a check-in signal indicating both approaches and an antenna
Send to the ground via (13) and send checkout signal
Shinbu (14) has the train detection loop coil (7)
Generates a checkout signal to notify the presence of the antenna (1
5) transmitting to the ground via the first vehicle end detection loop coil (1) and the second
Vehicle end detection loop coil (2) and first receiver (3)
And a second receiving section (4) and a vehicle length determining section (5).
And a first vehicle end detection loop coil (1) and a second vehicle
End detection loop coil (2) receives on-board signal from vehicle
A first vehicle end detection loop coil (1)
Is either the rear or the front of the vehicle stop at the platform (6)
At the reference position in parallel with the train detection loop coil (7)
The second vehicle end detection loop coil (2) is provided
From the vehicle detection loop coil (1)
In parallel with the train detection loop coil (7)
The first receiving unit (3) is provided with a first vehicle end detection loop.
Connected to the first vehicle end detection loop coil
Signal of a predetermined frequency among the on-vehicle signals received in the file (1).
Signal, and the vehicle stops based on the selected signal.
The reference position signal indicating that the vehicle is at
The second receiving unit (4) sends a second vehicle end detection loop
A second vehicle end detection loop coil connected to the
Of the on-vehicle signal received in (2)
Select the vehicle length detection signal based on the selected signal.
Sent to the judgment unit (5), and the vehicle length judgment unit (5)
Along the platform (6) by the semi-position signal and the vehicle length detection signal
To determine if the stopped vehicle is short or long
A vehicle length detecting device.