JP3227251B2 - Train control 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 train control apparatus for controlling the speed by power output from an AC power supply of variable voltage / variable frequency inverter control, and more particularly to prevention of erroneous detection of signal information in an ATC signal section. is there.

[0002]

2. Description of the Related Art In an electric vehicle having an AC power supply of variable voltage / variable frequency inverter control (hereinafter referred to as VVVF control) on a vehicle, the voltage and frequency of AC power supplied to an induction motor can be freely adjusted by VVVF control. Then control the speed of the train. The train speed by the VVVF control is proportional to the frequency supplied to the induction motor. For example, when the frequency supplied to the induction motor is 100 Hz, the train speed is 1 unit.
00 km / h. That is, the frequency supplied to the induction motor is changed from zero to a predetermined value, for example, 300H.
z, train speed from 0 km / h to 300 km
km / h. In addition, in order to control the tractive force, the current flowing through the induction motor is adjusted simultaneously with the frequency control.

On the other hand, an ATC signal sent from the ground to control a train uses a carrier wave that avoids the harmonics of the commercial frequency, so that the train is controlled so as not to be affected by the harmonics of the commercial frequency. For example, in order to avoid the influence of harmonics of the commercial frequency of 60 Hz, as shown in FIG.
z, 29Hz, 36Hz plus carrier frequency 900Hz, A
The TC signal frequency is nth order of commercial frequency 60Hz and (n + 1)
It is arranged in the gap of the next harmonic.

[0004]

As described above, VVVF
The frequency of the electric power sent from the control AC power supply changes according to the speed and is not a fixed frequency called the commercial frequency, and VV
The VF control AC power supply is used for driving a train, and is a high-power device. Therefore, harmonics induced from the VVVF controlled AC power supply are large. This VVV
When the F-controlled train runs in the ATC signal section, the ATC signal is disturbed by harmonics induced from the VVVF-controlled AC power supply. For example, A with an instruction speed of 220 km / h
TC signal frequency of 910Hz is V corresponding to speed 91km / h.
10th harmonic of frequency 91Hz of VVF control and speed 182k
This is coincident with the fifth harmonic of the frequency 182 Hz of the VVVF control corresponding to m / h.

In a code transmission system for transmitting ATC information in a digital code, for example, in frequency shift keying (FSK) of (930 ± 20) Hz, a harmonic of a frequency of VVVF control enters a band, and code transmission is performed. An error occurs.

[0006] For this reason, interference with the ATC signal cannot be avoided only by considering the harmonics of the fixed frequency of the commercial frequency as in the prior art, and it is difficult to select the carrier of the ATC signal. Therefore, at present, the ATC signal uses a carrier wave that avoids the harmonics of the commercial frequency.
Harmonics generated from an F-controlled AC power supply are suppressed as much as possible, and a frame having a noise component that does not become a proper signal in the code transmission system is removed by the agreement between the transmission side and the reception side.

However, when the starting current of the motor increases, the harmonics of the train current generated from the VVVF controlled AC power supply become larger, and the interference with the ATC signal increases, and the AT
C signals may not be transmitted from the ground to the vehicle. For this reason, even if the ATC signal corresponding to the predetermined speed is transmitted from the ground, the ATC signal is determined to be no signal on the vehicle, and the train is stopped, so that the train cannot be operated normally. .

Further, the code transmission method has a disadvantage that even if a one-bit error occurs, the entire frame is discarded by the error detection, resulting in a large time loss.

SUMMARY OF THE INVENTION The present invention has been made to solve such a disadvantage, and an object of the present invention is to provide a train control device in which an ATC signal is prevented from being interrupted by a train driving current.

[0010]

SUMMARY OF THE INVENTION A train control device according to the present invention has two sets of ATC transmitters as ground devices, and controls the speed with power output from an AC power supply of variable voltage / variable frequency inverter control. The on-board device of the train to be controlled has two sets of ATC receivers and an orgate. The two sets of ATC transmitters transmit the same signal information on carrier waves of different frequencies f ₁ and f ₂ , and each frequency f _1, f ₂ is made from the highest frequency fmax a prime number greater than that generated by the AC power supply on the car, frequency f
Differences, including the bandwidth of ₂ and a frequency f ₁ in the range not exceeding the minimum frequency fmin generated by the AC power source on the vehicle, and,
Arranged so as not to overlap the bandwidth Δf of the carrier, one of the ATC receiver of the two sets of the ATC receiver receives a carrier wave of frequency f ₁ to be sent from the ground, the other ATC receiver is sent from the ground It receives a carrier wave of frequency f _2, Oage - TMG and outputs the signal information by a logical sum of the signal information obtained from the two sets of the ATC receiver.

[0011]

According to the present invention, the same signal information is transmitted to the train from two sets of ATC transmitters installed on the ground using carrier waves having different frequencies f ₁ and f ₂ . The signal information based on the carrier waves having the frequencies f ₁ and f ₂ is converted into two sets of ATC
Each signal is received by a receiver, sent to an OR gate, and signal information is output by the logical sum of the signal information.

The frequencies f ₁ and f ₂ of each carrier transmitting this signal information are determined by the maximum frequency fmax generated by the AC power supply on the vehicle.
And the lowest frequency fmin are selected in a fixed relationship. When signal information transmitted on a carrier of _one frequency f1 is disturbed by harmonics generated from an AC power supply on the vehicle, the other frequency fmin is selected. _The signal information transmitted on the carrier ₂ is not affected by harmonics generated from the AC power supply.

[0013]

FIG. 1 is a block diagram showing an embodiment of the present invention. As shown in the figure, the train control device has a ground device 1 and an on-board device 3 mounted on the train 2. Ground equipment 1
Sends an ATC signal current to the rail 4 and has an ATC condition input unit 5 and two sets of ATC transmitters 6 and 7. The ATC condition input unit 5 continuously transmits information on the frequency indicating the permissible operating speed of the train, as shown in FIG.
Send to The ATC transmitter 6 has a carrier wave generator of a frequency f ₁ , modulates a signal wave sent from the ATC condition input unit 5 with a carrier wave f ₁ , amplifies the signal wave, and sends out the signal wave to a track circuit via a transmission line for transmission. . The ATC transmitter 7 has a carrier wave generator of the frequency f ₂ , modulates the signal wave sent from the ATC condition input unit 5 with the carrier wave f ₂ , amplifies the signal wave, and sends out the signal wave to the track circuit via the transmission line for transmission. .

The on-board device 3 is an ATC transmitted from the ground.
At the same time as receiving the signal and presenting the in-vehicle signal, it outputs a brake command if necessary, and includes two sets of ATC receivers 9 and 10, an orgate 11, and an in-vehicle signal device 12. ATC receiver 9 receives an ATC signal of the carrier f ₁ from the received current from the power receiving device 13 on the car. ATC receiver 10 receives the ATC signal of the carrier f ₂ from the received current. The OR gate 11 sends signal information obtained by the logical sum of the output signals from the two sets of ATC receivers 9 and 10 to the in-vehicle signal device 12. The train 2 equipped with the on-board device 3 controls the speed by freely adjusting the voltage and frequency supplied to the induction motor 14, and has a VVVF control device 15 for variable voltage / variable frequency inverter control. .

The carriers f ₁ , 2 of the two ATC transmitters 6, 7
f ₂ is made from the highest frequency fmax prime number greater than that generated by the VVVF controller 15 of the vehicle, the difference including the bandwidth of the frequency _{f 2} and the frequency _{f 1} is beyond the minimum frequency fmin generated in VVVF controller 15 It is selected so as not to overlap and the carrier bandwidth Δf does not overlap.

In the train control device configured as described above, a signal wave corresponding to the track circuit condition ahead is transmitted from the ATC condition input unit 5 of the ground device 1 to the ATC transmitters 6 and 7. The ATC transmitter 6 converts the transmitted signal wave into a carrier f _1.
And the ATC transmitter 7 converts the transmitted signal wave into a carrier f
Modulate by ₂ and send out to track circuit. When the train 2 enters the track circuit, a signal current flowing through the rail 4 is detected by the power receiver 13 on the car, and the ATC receiver 9 and the ATC receiver 1 are detected.
Send to 0. When this train 2 is running, V
The VVF controller 15 sets the generated frequency to the lowest frequency fmi.
Induction motor 14 while varying from n to the maximum frequency fmax
To control the speed of the train 2. Therefore, VV
The frequency f corresponding to the speed v of the train 2 from the VF controller 15
(Where n is an integer) is generated and flows to the rail 4 or reaches the power receiver 13 directly. The ATC signal flowing through the rail 4 may be disturbed by the harmonics nf.

[0017] However Le - person carrier f _1, f ₂ of the ATC signal flowing in Le 4 you have selected a greater than the maximum frequency fmax generated in VVVF controller 15, and is a prime number value, carrier f _1, it is possible to prevent the f ₂ matches the harmonic nf.

Further, n of the frequency f corresponding to an arbitrary speed v
If the next harmonic nf is within the bandwidth Δf of the carrier f ₁ as shown in equation (1) becomes as shown in (n + 1) order harmonic (n + 1) f the formula (2).

[0019]

(Equation 1)

On the other hand, the carrier f _{2 of the} ATC signal and the carrier f
_The difference including the bandwidth from ₁ is selected so as not to exceed the minimum frequency fmin generated by the VVVF controller 15 and not to overlap the bandwidth Δf of the carrier, and the frequency f is set to the minimum frequency fmin. Larger than f ₂ + Δf /
2 has the relationship of equation (3).

[0021]

(Equation 2)

Therefore, the frequency f corresponding to an arbitrary speed v
Is within the bandwidth Δf of the carrier f ₁ , the (n + 1) -order harmonic (n +
1) f is deviated from the bandwidth Δf of the carrier f _2.

Further, m of frequency f corresponding to an arbitrary speed v
If the next harmonic mf is within the bandwidth Δf of the carrier f ₂ as shown in Equation (4), shown in (m-1) order harmonics (m-1) f the formula (5) And f ₁ −Δf
/ 2 has the relationship shown in equation (6).

[0024]

(Equation 3)

The harmonics of this case frequency f harmonic mf frequency f also falls within the bandwidth Δf of the carrier f ₂ (m-
1) f can be prevented from entering the bandwidth Δf of the carrier f _1.

For example, if the minimum frequency fmin = 30 Hz and the maximum frequency 600 Hz generated by the VVVF controller 15 are the carrier f ₁ = 673 Hz, the bandwidth Δf = 10 Hz, and the difference between the carrier f ₂ and the carrier f ₁ is the VVVF controller 15. If the carrier f ₂ = 693 Hz and the bandwidth Δf = 10 Hz are selected within the range not exceeding the minimum frequency f min = 30 Hz generated in
The frequency f = 32 Hz generated by the VVVF controller 15 is 21
The next harmonic is a band of carrier f ₁ = 673 Hz (673 ± 5) H
Although falling within z, the 22nd harmonic having a frequency f = 32 Hz is out of the band (693 ± 5) Hz of the carrier f ₂ = 693 Hz. The 23rd harmonic of the lowest frequency fmin = 30 Hz falls within the band (693 ± 5) Hz of the carrier f ₂ = 693 Hz, while the 22nd harmonic of the lowest frequency fmin = 30 Hz has the carrier f ₁ = 673 Hz. It deviates from the band (673 ± 5) Hz. Therefore, it is possible to prevent harmonics generated by the VVVF control device 15 from simultaneously entering both bands of the carrier waves f ₁ and f ₂ .

Therefore, the ATC signals of the carrier waves f ₁ and f ₂ are
C receivers 9 and 10, respectively, and ATC receivers 9 and
The output of 10 is logically ORed by an OR gate 11 and sent to an in-vehicle signal device 12. Even if the ATC signal input to one ATC receiver 9 is disturbed by the harmonics generated by VVVF controller 15 in this way, the ATC signal input to the other ATC receiver 10 is not affected by the harmonics. Therefore, a normal ATC signal can always be input to the in-vehicle signal device 12.

[0028]

As described above, according to the present invention, when transmitting signal information from the ground to a train, the same signal information is transmitted on carrier waves having different frequencies f ₁ and f ₂ , and this signal information is transmitted. The frequencies f ₁ and f ₂ of each carrier are selected in a fixed relationship with respect to the highest frequency fmax and the lowest frequency fmin generated by the AC power supply on the vehicle, and the signal information transmitted on the carrier of _one frequency f ₁ is determined by the vehicle. when receiving the interference harmonics generated from the AC power supply of the above, since the other signal information transmitted on a carrier of a frequency f ₂ are prevented from being affected by the harmonics generated from the AC power supply, on the car Always normal ATC
A signal can be received, and it is possible to prevent a signal from being lost due to a harmonic interference wave.

In a code transmission system for transmitting ATC information in a digital code, occurrence of bit errors can be reduced, and the transmission time of ATC information can be reduced.

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram showing a speed stage and an operating frequency of an ATC signal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ground device 2 Train 3 On-board device 4 Rail 6,7 ATC transmitter 9,10 ATC receiver 11 Orgate 15 VVVF controller

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yasuhiro Tsunoda 2-29, Heian-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture 1 Inside Keiyo Seisakusho Co., Ltd. (56) References JP-A-52-20506 (JP, A) JP-A-60-113602 (JP, A) JP-A-5-3605 (JP, A) JP-A-62-244202 (JP, A) JP-A-4-52972 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) B60L 1/00-3/12 B60L ⁷ /00-13/00 B60L 15/00-15/42

Claims (1)

(57) [Claims] 1. Two sets of ATC transmitters having two sets of ATC transmitters as ground equipment, and two sets of ATC transmitters as train on-board equipment for controlling the speed with the power output from an AC power supply controlled by a variable voltage / variable frequency inverter. Transmitter and an OR gate, two sets of ATC transmitters transmit the same signal information at different frequencies f
_1, transmitted on a carrier of a f _2, the frequencies f _1, f ₂ are made from the highest frequency fmax prime number greater than that generated by the AC power source on the vehicle, the difference including the bandwidth of the frequency f ₂ and the frequency f ₁ Are arranged so as not to exceed the minimum frequency fmin generated by the AC power supply on the car and to prevent the bandwidth Δf of the carrier from overlapping. One of the two ATC receivers is transmitted from the ground. It receives a carrier wave of frequency _{f 1} to be the other ATC
The receiver receives a carrier wave of frequency f ₂ to be sent from the ground, Oage - DOO train control device and outputs the signal information takes a logical sum of the signal information obtained from the two sets of the ATC receiver.