JPS6332665B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention detects when a train has reached a braking point set in the middle of a block section by a signal sent from a transmitter to a track circuit in the block section. The invention also relates to an automatic train control (ATC) device that controls the train.

If a train enters the control section of a block signal when the stop signal is displayed, high-density operation cannot be achieved by immediately applying the train's brakes. Trains are allowed to proceed to a point a certain distance from the start of the front block section that governs the area, and the train is forced to stop when it reaches that point.
ATC method may be adopted. The certain distance is the distance from when the train's brakes are applied until the train stops (brake distance),
The point is a braking start point (brake point) so that the train can stop without entering the front block section. Therefore, when implementing this ATC method, it is necessary to detect that a train has reached a braking point, and to control the brakes by sending a signal to the train based on the detection.

[Prior Art] Conventionally, in order to perform the above-mentioned train detection and brake control, as shown in _FIG . 2 receiver R ₂ and transmitter S ₀ are connected to the end A of block section 2T, and transmit data from point A to the track circuit at all times, so that the train tr is connected to block section 2T.
If there is no train, the first receiver R ₁ receives the signal and operates relay TR ₁ , which detects the absence of a train, and when the train tr enters inward from point C, the axle tracks the train. 1st receiver R ₁ due to short circuit
is no longer received and relay TR ₁ falls, so
The presence of a train is detected, and during that time, the train moves forward while receiving the signal from the transmitter _S0 on the train and making the determination. Then, when the train passes point B, the second receiver R ₂ receives the signal, and its relay TR ₂ falls, thereby detecting the train passing point B, and the relay
An absolute stop indication signal RR is sent out from point A by the transmitter S ₀ via the contact of TR ₂ . Therefore, the train receives the absolute stop indication signal RR from the train, and applies the brakes based on this signal. Until the contacts of the relay TR ₂ fall, the transmitter S ₀ receives a progress indication signal (i.e., it is possible to proceed) depending on the condition HR of the forward signal, that is, depending on whether there is no train in the forward block section or not. A signal indicating a stop signal) G or a stop signal R is being transmitted.

In the above-mentioned conventional ATC device, the second receiver _R2 detects the passing of the train at point B by installing a voltage receiver or a current receiver R within the track at point B.
As the signal from point A no longer reaches point B due to a track short circuit caused by a train passing point B, receiver R no longer receives power, causing relay TR ₂ to fall. .

[Problems to be solved by the invention] However, when using the current power reception method,
The detection accuracy is relatively high compared to the voltage power receiving method, but the drawback is that the power receiving coil must be installed between the rails, which makes track maintenance work, etc. inconvenient. Furthermore, since a receiving device different from the first receiver _R1 is required, there is a drawback that equipment and maintenance are complicated.

In addition, when using the voltage power reception method, even if the train axle has not yet reached point B, the power reception level of receiver R begins to decrease as soon as it approaches a certain distance from point B, and the leakage resistance The second receiver R ₂
There is a large variation in the position of the train at the time of the fall of relay TR ₂ . In other words, the voltage power receiving system has a drawback in that the detection accuracy of a train passing through point B is poor.

Furthermore, in both the voltage power receiving method and the current power receiving method, since the receiver R ₂ relay TR ₂ is used, if the train passes point B accurately, the voltage input to the receiver R ₂ Even if the current disappears, it takes time until the train actually receives the absolute stop indication signal RR because of the operation delay of the receiver _R2 and the time delay of the relay _TR2 . The time from detection of a train on the ground to reception of a stop signal on the train is a function of train speed, and the higher the speed of the train, the later the braking starts.

This invention changes the transmission point of the transmitter to the track circuit to the brake point, which is the end or the middle point of the track circuit in the block section, according to the conditions of the forward signal, and also changes the no-current state of the track circuit on the train. It is an object of this invention to eliminate the above-mentioned drawbacks by detecting passage of a brake point and applying a brake when detected.

[Means for Solving the Problems] In order to achieve the above object, the present invention transmits a progress signal to the end of the track of a block section according to the progress display condition of the front signal, and the stop signal is set according to the stop display condition of the front signal. The first feature is that a transmitter is provided which sends a stop indication signal to an intermediate point serving as a brake point of the track in the block section.

In addition, the on-board device includes a brake control section that applies the brakes when the receiving section that receives and sorts signals from the track circuit via the on-board terminal installed at the top of the vehicle detects a no-current state in the track circuit. The second feature is that it is prepared.

[Effect] Therefore, if there is no train in the front block section,
Since the progress signal is sent to the track from the end of the block section, the train can receive the progress signal and continue traveling until the end of the block section. Also, if there is a train in the front block section,
A stop signal is sent from the midpoint of the block section, so as soon as the train is running through the brake point and the track is short-circuited, it becomes a no-current state, and this is detected on the train and the brake control unit applies the brakes. is applied immediately, so the train stops.

[Embodiments of the Invention] Next, embodiments of the invention will be described based on the drawings from FIG. 2 onwards.

For ease of understanding, FIG. 2 only shows the transmission state when there is a train in the front block section 1T.

As is clear from the figure, the front block section 1T
If there is a train at the block section 2T, connect the first receiver R ₁ to point C (starting end) and the second receiver R ₂ to point A (terminus), and connect the intermediate point B point (brake A transmitter S is coupled to the point).

When there is a train in the front block section, the transmitter S sends a signal R corresponding to the conventional stop indication signal R.
from point B to orbit.

On the other hand, if there is no train in the forward block section 1T, the first train will be placed at point C in the block section 2T, as in the past.
A receiver R ₁ is coupled to a point B, a second receiver R ₂ is coupled to a point A, and a transmitter S is coupled to a point A, so that a progress indication signal G is transmitted from the transmitter S to the orbit.

In other words, conventionally, data was always transmitted from a fixed point A,
In contrast to the case where signals were received at points B and C, in this invention, if there is a train in the block section ahead, the stop signal is transmitted from the midpoint of the block section, and if there is no train in the block section ahead, the stop signal is sent. As in the past, the stop indication signal is transmitted from the end of the block section.

As described above, in the present invention, the transmission point and the transmission content are changed depending on the presence or absence of a train in the front block section.An example of this will be explained based on FIG. 3.

A switching circuit operated by the progress indicating relay of the forward signal 1 is provided, one HR ₁ on the input side of the transmitter _So , and two switching circuits HR ₂ on the output sides of the transmitter So and the second receiver R _{2 .} , HR ₃ are provided, and the transmitter and the second receiver are connected to both switching circuits HR ₂ and HR ₃ , and one switching circuit HR ₂ is connected to point A, and the other switching circuit is connected to point A.
HR ₃ is connected to point B.

As a result, when the forward signal 1 indicates a stop signal, the stop signal R is input to the transmitter S _o due to the drop of the progress signal relay, and the signal output from the transmitter S _o is thereby changed to the switching circuit. The signal is sent into orbit from point B via HR ₃ , and the second receiver _R2 can receive the signal from point A via switching circuit _HR2 . On the other hand, when the forward signal 1 is indicating progress, the progress indicating relay is lifted, so
The progress signal G is sent to the transmitter via the switching circuit HR ₁ .
Entered into S _o . As a result, the signal output from the transmitter S _o is sent to the orbit from point A via the switching circuit HR ₂ .

Further, in the present invention, the receiving section constituting the on-board device receives and checks signals from the track circuit, and when receiving the stop indication signal R, sends a stop command signal to the brake control section of the on-board device. When no signal is received from the track circuit, an absolute stop command signal is output to the brake control section. The brake control section normally applies the brakes when the stop command signal is input, but does not apply the brakes when the driver switches to confirmation driving. This point is the same as the conventional one. On the other hand, when the brake control section receives an absolute stop command signal from the reception section, the brake is applied unconditionally.

With the above configuration, if there is a train in the forward block section 1T, the continuing train tr will be in the block section 2T.
When the train enters the area, the receiving section of the onboard device receives a stop signal from the track, but if the train is switched to confirmation operation at this time, the train will continue to advance without being stopped.

When the train that has entered block section 2T reaches point B, the leading axle of the train passes the connection point between the rail at point B and the transmitter S, and at the same time
The track between them will be in a state of no current, and the train will no longer receive any signals. Therefore, when the receiving section detects a no-current state on the track, it inputs an absolute stop command signal to the brake control section, so that the brake control section applies the brakes and stops the train.

In this way, in this invention, transmitting from point B,
Passing point B is detected by detecting no current on the train, so passing point B is detected at the same time as the train's leading axle passes point B.
Detection accuracy is extremely high. Furthermore, since the brakes on the train are applied immediately upon detection of no current, there is no delay time in the receivers and relays of the ground equipment, unlike in the conventional system.

There are also the following advantages in making the train's onboard coil non-current when the train enters between AB. That is, when the on-site course is not open in the vicinity of the premises, a signaled stop indication signal is transmitted to the on-site course outward track. A train that receives this will be temporarily stopped, but can proceed at low speed by switching to confirmation operation. Therefore, if a certain section outside the train station is turned off when the train track is not open, the check operation can be canceled and the train can be reliably stopped outside the train station. Furthermore, since the train is stopped even in the event of a failure in the transmitter S system, it can be constructed in a fail-safe manner.

In addition, if there is no train in the forward block section 1T, the progress indication signal is sent from the end of the track as in the past, so even if the train passes point B, there will be no current state. The brakes do not work and you can continue moving forward.

Finally, to explain the configuration of the train detection means for rear block section 3T control, the front block section 1
When there is a train at T, as shown _in the lower right of Fig. ₂ , the relays TR ₁ ,
By connecting the contact point of TR ₂ and another relay TR in series, a train detection means for block section 2T when there is a train in front block section 1T is provided.
TD is configured.

With this configuration, when there is a train in the forward block section 1T, if the continuing train tr now enters inward from point C of the block section 2T,
Since the first receiver _R1 no longer receives the signal R and the relay _TR1 falls, the relay TR of the train detection means TD also falls, and the train entering the block section 2T is detected. When the tail of the train passes point B, the first receiver _R1 will receive the signal _R1 from point B, but the relay contact TR of the second receiver _R2 is connected to the train detection means TD. ₂ has been inserted, so
As long as that part of the train exists between AB, the second receiver R ₂ does not receive any signal, and since the relay TR ₂ has fallen, the relay TR also falls, and the presence of the train is detected. Therefore, even when transmitting from point B, as long as there is even a part of the train between AC, the presence of a train is detected and the purpose of the track circuit is fulfilled.

Then, if there is no train in the forward block section 1T, the train detecting means uses the first receiver as in the past.
Needless to say, it is constructed from a series circuit of the relay contact _R1 and another relay.

[Effects of the Invention] As described above, according to the present invention, a stop indication signal is transmitted to the track from a brake point located at the midpoint of the block section according to the stop indication condition of the front signal, and no current is generated on the train. Since passing the brake point of the train is detected by detecting the passing of the brake point, the passage of the brake point is detected at the same time as the train's leading axle passes the brake point, so the detection accuracy is very high and the influence of track environmental conditions is minimized. It is not affected by train speed. Since the brakes on the train are applied based on the detection of no current, the train can be reliably stopped within a predetermined range.

[Brief explanation of the drawing]

FIG. 1 is an electrical wiring diagram of the conventional device, FIG. 2 is an electrical wiring diagram of the device of the present invention with some parts omitted, and FIG. 3 is an electrical wiring diagram with the omitted parts added. 1T, 2T, 3T...Block section, C...Start of block section, B...Brake point, A...End of block section, S, S _o ...Transmitter, _R1 , _R2 ...Receiver , HR ₁ to _{HR 3} ...Relays that operate when the forward signal indicates progress.

Claims (1)

[Scope of Claims] 1 (a) A track circuit comprising: a first receiver coupled to the starting end of the track of the block section; and an intermediate receiver that becomes a braking point of the track of the block section according to the progress indication condition of the forward signal. a second receiver connected to the end of the track of the block section according to the stop indication condition of the forward signal, and transmits the progress indication signal to the track circuit of the block section according to the progress indication condition of the forward signal and a transmitter that transmits a stop indication signal to an intermediate point serving as a braking point of the track circuit of the block section according to the stop indication condition of the forward signal; The train detection means is a series circuit of a relay contact of the first receiver and a detection relay when there is no train in the forward block section, and a series circuit of the first receiver's relay contact and a detection relay when there is a train in the forward block section. (c) A signal is transmitted from the track circuit to the on-board device via an on-board terminal provided at the front of the train. An automatic train control device comprising: a brake control unit that applies a brake when a receiving unit that performs reception detection detects a no-current state in the track circuit.