JP2710284B2 - Train presence / absence determination device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a count value of an axle counter provided at both ends of a block section of a track, that is, a unit section (hereinafter referred to as a truck) that determines whether or not a train can travel. The present invention relates to an apparatus for determining the presence or absence of a train on a track based on whether or not a predetermined relationship exists.

The determination result of the train presence / absence determination device is given to an automatic closing device that controls the signal display of the traffic signal for the truck and performs closing or opening.

[Prior Art] An axle counter sends a magnetic flux from a transmitting coil provided on one side of a rail to a receiving coil on the opposite side over a rail tread, and receives the signal by interrupting the magnetic flux when the train axle passes between the transmitting and receiving coils. In the case of detecting and counting the axle by detecting a decrease in the reception level of the coil, the magnetic flux is interrupted by a metal falling object or a work metal object between the transmission and reception coils,
It is quite possible to make a false detection.

If an erroneous detection is made while the train is not on the track, the train is determined to be on the train even though the train is not on the train and the section is closed forever, which hinders train operation.

Conventionally, no measures have been known to solve such a problem.

[Technical Problem to be Solved] The present invention relates to a train presence / absence determination device using an axle counter that detects and counts an axle by interrupting magnetic flux between a transmitting and receiving coil. In this case, the purpose is to take measures so as not to hinder the train operation.

[Means for Solving the Problems] In order to solve the above problems, a train presence / absence determination device according to the present invention counts the axles of a train traveling on a rail on which the train travels at predetermined intervals along the rail. Axle counters (D1, D2, D3 ...) are provided, and one track (T1, T2, T3 ...) is formed between successive axle counters (D1, D2, D2, D3 ...) A train presence / absence determination device in each truck when three axle counters (D1, D2, D3, D2, D3,
D4 ...) to form one virtual track (IT1, IT2 ...) and one virtual track (IT1)
Even if the axle counters (D2) in the vehicle start counting axles, none of the axle counters (D1, D3) on either side of the virtual truck (IT1) are counting axles. ,
Two tracks (T1, T2) in the virtual track (IT1)
If the axle counter (D2) on the train advancing side of the track (T1) counts incorrectly while one truck (T1) detects the presence of a train, the axle counter When the axle counter (D3) on the train exit side of the virtual truck (IT1) that includes (D2) in the middle counts the number of trains,
A judgment means for judging that there is no train is provided on the tracks (T1, T2) in the virtual track (IT1).

[Operation] In the above configuration, even when the axle counter (D2) in one virtual truck (IT1) starts counting the axles, the determination means determines the axle counts on both sides of the virtual truck (IT1). When none of the units (D1, D3) are counting axles, it is determined that there are no trains in two tracks (T1, T2) in the virtual track (IT1), and one truck (T
1) If the axle counter (D2) on the train exit side of the truck (T1) detects an incorrect count while detecting the presence of a train,
A virtual truck (IT) that includes the axle counter (D2) in the middle
When the axle counter (D3) on the train advancing side of 1) counts the number of advancing trains, it is determined that there is no train on the tracks (T1, T2) in the virtual truck (IT1).

Next, an embodiment of the present invention will be described with reference to the drawings.

Embodiment I FIG. 1 shows that axle counters are provided at both ends of a truck, and both counters are reset in the absence of a train. When the count values of both counters do not match, it is determined that there is a train, to train existence determination apparatus according to the known determination method determines that no train (passing) with ever, in the embodiment of when the invention is applied to show only the configuration corresponding to tracks T ₁ through T _3.

That is, the train presence / absence determination device in this case is provided with axle detectors D _{1 to} D ₆ at both ends of each section T _{1 to} T ₃ that divides the track R into arbitrary ranges, and detects the detection output of each axle detector. counted by the axle counter C ₁ -C _6, and sends to the central apparatus CEN its count via the transmission path. In the central unit, a determination unit E ₁ to E ₃ corresponding to each track, and a control unit F ₁ to F _3.

Then, each determination unit is provided with the count values (for example, a, b) of the axle counters at both ends of each truck, and determines whether any of the count values is constant (for example, a ≠ b, a = b). by either satisfied, it determines the presence of a train on the track, and is configured to output a train there determination signal s ₁ or train without determination signal s ₀ in accordance with the determination result. The determination unit may output a determination signal that changes to a high level and a low level in response to the determination of the presence or absence of the train.

The determination output signals of the determination units E _{1 to} E ₃ , that is, the train presence determination signal s ₁ and the train absence determination signal s ₀ are provided to a route control unit (not shown) of the automatic route control device. The route control unit controls the signal indication of the traffic light installed for each truck to block or open the truck.

Also, the train no decision signal s ₀ of each judgment unit E _1, E _2, E ₃ are given to the control unit _{F 1, F 2, F 3} . This allows each control unit to detect the axle at both ends of the corresponding truck.
The clear control signal cs is sent to the axle counters C ₁ , C ₂ , C ₃ , C ₄ , C ₅ , C ₆ for counting the detection outputs from D ₁ , D ₂ , D ₃ , D ₄ , D ₅ , D _6. To clear the count value. That is, based on the passing of the train, the count value is set to 0, and the detection of the axle of the next train is awaited.

The above is the same as the configuration of the conventional train presence / absence determination device.

In the device according to the present invention, in addition to the first determination units E ₁ , E ₂ , E ₃ ... Corresponding to the respective tracks, a plurality of adjacent tracks T ₁ , T ₂ , T ₂ , T ₃ are provided in the central device CEN. ,... As virtual tracks IT ₁ , IT ₂ ,.
Determination unit G _1, G _2, ... and the control unit H _1, H _2, and a ....

Further, the axle detectors D ₁ , D ₂ , D ₃ ,... Are provided with linked counters C ₁ ′, C ₂ ′, C ₃ ′.

The second determination units G ₁ , G ₂ ,... Are respectively virtual tracks IT ₁ , IT
_2, axle counter C ₁ against ... across the _{'C 4', C 3 '} , C 6',
... (for example, a, b) are given, and the presence or absence of a train for the virtual track is determined based on which one of the predetermined values (for example, a ≠ b, a = b) is satisfied. It is stable and outputs a signal according to the determination result.

The control units H ₁ , H ₂ ,... Are respectively second judgment units G ₁ , G ₂ ,.
Entering by entering the train without determination signal s _0, respectively controller F ₁ subordinate to the first determination of the tracks included in the virtual _{track, F 2, F 2, F} 3, a control signal cs' ... from As a result, the clear control signal cs is output, and the count value of the both-end axle counter of the truck included in the virtual truck is cleared. Further, this control signal cs' is also input to the axle counter for the virtual truck, and clears the count values of the axle counters at both ends of the virtual truck.

Train no decision signal s ₀ of the second determination unit also gates OR _1, OR ₂ of the first determination unit of the virtual track, ... via the given automatic blocking device.

Further, the gates AN are provided to the virtual track control units H ₁ , H ₂ ,.
The clear cs ₁ , c from the control units F ₁ , F ₂ , F ₃ ,... Of the track determination unit included in the virtual track via D ₁ , AND ₂ ,.
When s ₂ , cs ₂ , cs ₃ ,... are simultaneously input, the control units H ₁ , H ₂ ,... output clear signals cs ₁ ′, cs ₂ ′. Thereby, the axle counter corresponding to the virtual truck is cleared.

That is, when any of the determination units of the tracks included in the virtual track determines that there is no train, the determination unit of the virtual track is also set to the determination state of no train.

Embodiment II FIG. 2 shows a ring counter type axle counter which increments by +1 or -1 depending on the traveling direction (upward or downward) of a wheel at the boundary of a track every time one wheel of a train is detected. A register for storing the count values of the axle counters corresponding to both ends of the truck, and for each truck, the count values of the axle counters at both ends of the track are set in the register in a state where there is no train, and thereafter, For each truck, the difference between the current count value of the axle counters at both ends and the value stored in the register, that is, the number of axles entering and exiting the truck, is calculated. An embodiment in the case where the present invention is applied to a new train presence / absence determination device that determines the presence / absence of a train for the track based on whether or not the present case is described. Figure 2 also shows only a configuration corresponding to the track T ₁ through T _3.

The first determination unit E ₁ corresponding to one track T _1, the logic unit
L ₁ , register RE ₁ , and setting means S ₁ . The first determination units E ₂ ,... Of the other tracks T ₂ ,.

Registers RE ₁ , RE ₂ ,... Output detection outputs of axle detectors D ₁ , D ₂ , D ₂ , D ₃ , D ₃ , D ₄ at both ends of each track T ₁ , T ₂ , T ₃ ,. An axle counter C _1- composed of a ring counter for counting
Count c ₁ of _{C 4, c 2, c 2} , c 3, c 3, c 4 may be set and stored. The count values to be stored are the respective logic parts L ₁ , L
Used for ₂ ,….

Each of the setting means S ₁ , S ₂ ,... Is provided with a count value of an axle counter corresponding to both ends of each truck, and when a set signal is input from the outside, the count value is stored in a corresponding register RE ₁ , Set to RE ₂ , ...

At the time of starting the apparatus, since neither of the registers RE ₁ and RE ₂ is in the non-set state, the logic unit does not perform the train presence / absence determination (with the section closed). After the clerk confirms that there is no train on the truck, the clearing button (not shown) connected to the setting means performs the on-line clearing treatment, and the setting means S ₁ , S ₂
… Are stored in each storage area of the registers RE ₁ , RE ₂ … and the axle counters C ₁ ,
C _2, C ₃ ... set _{c 1, c 2, c 2} , c 3 ... the content of, the determination unit E
_1, E ₂ ... logic unit L _1, L ₂ of, ... it becomes possible train existence determination by.

The count values of the axle counters corresponding to both ends of each truck are
The logic units L ₁ , L ₂ ,... Of each determination unit are always given.
Then, each logic unit uses the current count value from the axle counter and the stored value of the register to calculate according to a predetermined formula to obtain the number of approaching axes and the number of advancing axes to each truck. The presence / absence of a train is determined for one corresponding track based on whether the sum is 0 or not.

The decision logic, for ease of understanding, for the case of one track T ₁ on the basis of FIG. 2 will be described.

Determination of the train presence, the logic unit L ₁ is, the current count of the axle counter _{C 1, C 2 (c 1} , c 2), register RE ₁ storage value _{(c 1 ', c 2'} ) As described below, the process is performed through a process of counting the number of approaching / entering axes and a process of determining no train.

(A) Counting the number of entering and exiting axes The axle counters C ₁ and C ₂ enter and exit the truck T ₁ at both ends p ₁ and p ₂ of the truck T ₁ based on the output from the axle counter. Find the number of axes. Now, assuming that the numbers of approach axes detected at the ends p ₁ and p ₂ are △ c ₁ and △ c ₂ , respectively, these values are obtained by the following equations.

Δc ₁ = c ₁ ′ −c ₁ Δc ₂ = c′−c ₂ is the number of approach axes from p ₁ , and is the number of approach axes from p ₂ . The p ₁ and p _2, since the entering direction with respect to the track T ₁ is located in the opposite direction of the subtraction is the opposite.

The above operation is performed using a 10-bit register, ignoring carry and borrow. By way of example, (1) -4 = 500-504 ( 3FC H) (1F4 H) (1F8 H) (2) 4 = 2 -1022 (004 H) (002 H) (3FE H) (3) - 4 = 1022- 2 becomes ^{(3FC H) (3FE H)} (002 H).

The 3FC ^H is four in two's complement. Therefore, when the difference value is positive, it indicates the number of approach axes, and when the difference value is negative, it indicates the number of advance axes. In the above example, (1) means 4-axis advance, (2) means 4-axis advance, and (3) means 4-axis advance. The number of ingress / egress axes at each end is also stored in a 10-bit register.

(A) Train absence determination The logic unit L further calculates the sum of the differences obtained by the above-described predetermined formula operation, and determines whether or not the sum satisfies the following formula: Δc ₁ + Δc ₂ = 0 And when this condition is met,
That is, ingress-advance the number of axes of the sum of the track T ₁ is "0"
In the case of, it is determined that no train for this track T _1. Also in the case of the sum of the differences, the calculation is performed using a 10-bit register, and the carry and the carry are ignored.

For example determines the above formula, when it is ^{-4 + 4 = 0 (3FC H} ) (004 H) (000 H) is a train without the track T _1.

Logic unit L ₁ is when it is determined that no rows difference, and outputs the signal s _0. This output signal s ₀ is, as described above, the setting means S ₁
Is given to a block control unit (not shown). Set means S ₁ to the register RE ₁ with respect to the track T ₁ based on the signal input, sets the value of the axle counter C _1, C ₂ corresponding to the opposite ends of the track at that time. Further, clogging control unit causes the opening of the track T _1.

G ₁ and G 2 in FIG. ₂ are second determination units added based on the present invention in the case of a train presence / absence determination device using a ring counter type axle counter. Like the second determination units E _{1 to} E ₃ , the second determination unit also includes logic units 2L ₁ , 2L _2, ..., Registers 2RE ₁ , 2R
E ₂ ..., and set means 2S _1, 2S ₂ ... are composed of.

The registers 2RE ₁ , 2RE _2, ... Include a plurality of adjacent tracks, such as T ₁ + T ₂ , T ₂ + T ₃ ,.
Axle counters C ₁ , C corresponding to both ends of IT ₁ , IT ₂ ,…
₃ , the count values c ₁ , c ₃ , c ₂ , c ₄ ,... Of C ₂ , C ₄ ,. The logic units 2L ₁ and 2L ₂ use the current count value from the corresponding axle counter and the stored value of the register, and perform an operation according to a predetermined formula, similarly to the logic unit in the first determination unit. The presence or absence of a train is determined for the virtual track, and a train presence determination signal s ₁ and a train absence determination signal s ₀ are output according to the determination result.

In the second determination units G ₁ , G _2, ..., The no-train determination signal s ₀ is given to the setting means 2S ₁ , 2S ₂ ,.
For IT ₁ For T ₁ and T _2, IT ₂ corresponds to T ₂ and T _3, are input to the first set means S ₁ of the determination _{unit, S 2, S 2, S} 3 ..., the first
The registers RE ₁ , RE _2, ... Of the determination section are set.

Therefore, in the first determination unit, the determination condition of no train is set by setting the register.

Each of the second determination units has AND gates AND ₁₁ , AND ₁₂ ,... That inputs an output signal when the first determination unit of the track included in the virtual track determines that there is no train, and the first determination unit Are determined to have no train, the setting means 2S ₁ , 2S ₂ ... Perform a setting operation on the register by the output of the gate.

Referring to the second determination unit G ₁ of the single, logical unit
When 2L ₁ provides a set signal to the setting means S ₁ , S ₂ , the first determination unit determines that there is no train, and when both the first determination units E ₁ , E ₂ determine that there is no train, the gate AND ₁₁ determining, by the set means 2S ₁ is set operation through the OR _21, therefore, the determination unit also trains without the virtual track.

The above-mentioned truck is a section defined between adjacent axle counters on the track as shown in FIGS. 1 and 2, and the virtual truck is a combination of two or more continuous trucks. . In principle, this virtual truck is configured in a range that can be backed up by the determination control as described above, even if one axle detector erroneously detects it.

FIG. 3 shows a specific configuration example when a virtual track is composed of two adjacent tracks. Each axle detectors D ₁ ~
Against D _8, as indicated by a dotted line in the drawing, the virtual track IT
_{1 to} IT ₆ can be configured.

In Figure 4, the track T ₁ of the case where the train TR travels from left to right, ... change of determination output level of the first determination section corresponding respectively to T _3, when the axle detecting no false positives, As shown in FIG.

Next, in the train presence / absence determining device having the above configuration, the compensation operation when the axle counter miscounts based on the erroneous detection of the axle detector will be described with reference to the axle detector shown in FIG.
A case in which D ₂ and D ₃ are erroneously detected at different times will be described as an example based on the second embodiment.

(A) First, as shown in FIG. 6, when the axle detectors D ₂ and false positives, A. While the train on the track T _1, T in ₂ is not rail, if the axle detector D ₂ is erroneously detected by a metal falling objects, it is erroneously counted axle counter C _2. As a result, the first determination units E ₁ and E ₂ corresponding to the trucks T ₁ and T ₂ using the axle counter C ₂ respectively.
And the second determination unit G ₂ corresponding to the virtual track IT ₂ is judged that there is a train, and outputs a train there determination signal s _1, respectively.

I. However, since the track axle counter for starting end of T ₁ C ₁ and the axle counter C ₃ of the terminal portion of the track T ₂ are not erroneously counted, corresponding to the virtual track IT ₁ including a track T _1, T ₂ second logic portions 2L ₁ of the determination unit G ₁ is determined that there is no sequence difference of the first train without determination signal s ₀ is the second determination unit sets means 2S ₁ and each track T ₁ of the G _1, T ₂ for given to the determination section E _1, set means S _1, S ₂ of E _2, the new count value is set in each register _{2RE 1, RE 1, RE 2} .

That is, the track T contained in the virtual track IT ₁
The first determination units E ₁ and E ₂ corresponding to ₁ and T ₂ are set with conditions for determining the absence of a train, and output a train absence determination signal s ₀ .

C. Thus, when the first determination unit E ₂ of the track T ₂ to determine the absence of trains, trucks T ₂ constituting the virtual track IT _2,
Since both the first determination units E ₂ and E ₃ corresponding to T ₃ are returned to the determination state of no train, the gate AND _{12 of} the second determination unit G ₂ satisfies the logical product condition and is set in the setting means 2S ₂ for providing a signal, a second determination unit G ₂ corresponding to the virtual track IT ₂ also transferred back to decision state train no.

(B) Next, as shown in FIG. 7, when the axle detectors D ₃ were false positives, A. When the axle detector D ₃ false positives to, the first determination unit E ₂ corresponding to the track T _2, T ₃ using counter C ₃ connected thereto,
The second determination unit G ₁ corresponding to E ₃ and the virtual track IT ₁ determines that there is a train.

I. However, from the virtual track IT ₂ is composed of an axle detector D _2, D _4, second determination unit G corresponding to the virtual track IT _2
2 judges that there is no train. Accordingly, this causes the setting means of the first determination units E ₂ , E ₃ corresponding to the tracks T ₂ , T ₃ to supply a set signal to the register, and the logic units L ₂ , L ₃
Is set as the condition for no-train determination, so the first determination unit
E ₂ and E ₃ are returned to the determination state of no train.

C. The tracks T ₁ , T ₂ constituting the virtual track IT ₁ are returned by the first determination unit E ₂ corresponding to the track T ₂ , by the return of the no-train determination.
Since the first determination unit E _1, E ₂ corresponding are both no train determination condition, the set signal is applied to the set means 2S ₁ of the virtual track IT ₁ via the gate the AND _11, new meter to register 2RE ₁ since the number is set, the second determination unit G ₁ also returns to trains without determination state.

(C) Finally, if the axle detector D ₂ is erroneously detected during train passage, A. When axle detectors axle counter C ₂ by an erroneous detection of D ₂ is erroneously counted, as shown in FIG. 8, even if the train passes through the axle detector D _2, determination unit E ₁ of the track T ₁ train The presence determination signal remains output.

I. The determination unit G ₁ of the virtual track T ₁ because not affected by the erroneous counting axle counter C _2, when the train leaves the axle detector D _3, determines that there is no train, and outputs the signal s ₀ . Thus, the gate by OR _11, OR ₁₂ outputs a train without judging signal, so further sets a set means S _1, S ₂ which set signal is outputted by the gate the AND _21, tracks T _1, T ₂ of the determination unit E ₁ and E ₂ return to the determination state of no train.

C. Virtual Track IT ₂ also affected by the erroneous counting axle counter C ₂ but, by simultaneous trains without determination signal of the determination unit E _2, E ₃ of the track T _2, T _3, set via the gate the AND ₁₂ means 2S _{for 2} to set in the register 2RE _2, returns to the decision state without trains.

[Effects of the present invention] As described above, according to the train presence / absence determining apparatus of the present invention, three axle counters (D1, D2, D3, D2, D3, D4 ...) to form one virtual track (IT1, IT2 ...), and an axle counter (D) in one virtual track (IT1).
Even if 2) starts counting the axle, if none of the axle counters (D1, D3) on either side of the virtual truck (IT1) counts the axle, the virtual truck (IT1) ) Determines that there is no train in the two tracks (T1, T2), and while one track (T1) detects that there is a train, the axle counter (D2) on the train exit side of that track (T1) is incorrect. When the counting occurs, the axle counter (D1) on the train exit side of the virtual truck (IT1) including the axle counter (D2) in the middle
3) When the number of trains is counted, since the track (T1, T2) in the virtual track (IT1) has a determination means for determining that there is no train, the axle is detected by interrupting magnetic flux between the transmitting and receiving coils. In a train presence / absence determination device that uses an axle counter that counts, when a false detection is made due to a falling metal object or a working metal object, the truck is prevented from being permanently closed and hindering train operation. You.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of one embodiment of the present invention, FIG. 2 is a block diagram showing a basic configuration of another embodiment,
Third is a conceptual diagram showing a specific example of the configuration of a virtual track.
The figure is a conceptual diagram showing the relationship between the arrangement of the axle detector on a single line and the truck and the virtual truck, used for the explanation of the operation,
FIG. 5 is a time chart showing a waveform of a train presence / absence determination signal corresponding to each track and a virtual track when none of the axle detectors in FIG. 4 makes an erroneous detection. FIG. FIG. 7 is a time chart for explaining an operation when another axle detector detects an error, and FIG. 8 is a time chart for explaining an operation when an error is detected while passing through a train. It is a time chart. T ₁ , T ₂ , T ₃ …… Truck (blocking section) IT ₁ , IT ₂ … Virtual truck, D ₁ , D ₂ , ～ D ₆ …… Axle detector, C ₁ , C ₂ , ～ C ₆ … ... axle _{counter, E 1, E 2, E} 3 ...... first determination unit, G _1, G ₂ ...... second determination unit.

Claims (1)

(57) [Claims] 1. A plurality of axle counters (D1, D2, D3...) For counting the axles of a train running on a rail running on the rail at predetermined intervals along the rail on which the train runs are provided. The train presence / absence determination device in each block section when one axle counter (D1, D2, D2, D3 ...) is formed into one block section (T1, T2, T3 ...). Virtual block section setting means for forming one virtual block section (IT1, IT2,...) With three axle counters (D1, D2, D3, D2, D3, D4...) So as to sandwich the axle counter; Even when the axle counter (D2) in the block section (IT1) starts counting axles, both axle counters (D1, D3) on both sides of the virtual block section (IT1) identify the axle. When counting is not performed, the virtual block section (IT
1) It is determined that there are no trains in the two block sections (T1, T2), and while one block section (T1) detects the presence of a train, the axle counter on the train exit side of the block section (T1) ( When D2) generates an erroneous count, the axle counter (D) on the train exit side of the virtual block section (IT1) including the axle counter (D2) in the middle
3) A train detection device characterized by comprising: a judgment means for judging that there is no train in a block section (T1, T2) within the virtual block section (IT1) when the number of advance of a train is counted.