JPS6015258A - Automatic train controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] His invention relates to a manual train control device.

3.1 Conventional technology Generally, it is called automatic train control (D-to, A-to-C).

) At the installation@, ATC is connected from the transmitter to one end of the track circuit.
A signal is sent to the train, and is received by the receiver connected to the other end of the track circuit until the train enters the track circuit and short-circuits the axle of the track circuit. It drives a control relay that controls the transmission conditions.

The C1△T'C signal represents multiple types of allowable speeds by modulating the carrier wave with square wave modulation signals of different frequencies in order to perform multi-stage speed control of the train. Generally, the type is -C.

Since the type of AT'C signal sent to the track circuit is predetermined, conventionally, as shown in Figure 1,
The transmitter △ transmits the single-shell wave fc using a modulator @f with a different frequency.
ATC signal f1-fn with amplitude modulation from m1 to fmn
△1 equipped with a plurality of modulators 1M1 to IMtl that generate
-C signal generator 1 and ATC signal f from each modulator
1 to tn, and selects and outputs the A-f'C signal suitable for each track circuit based on the signal S indicating the 91 vehicle position A'1, route opening conditions, etc. , a transmitting section 3 for sending the selected ArG signal to the lower C of the track circuit.

Conventionally, in order to receive and demodulate and classify the various △C signals, a frequency conversion method using Hedero gain conversion is adopted, so as shown in 11% 1, the receiver Co , the signal fi is converted into the modulated signal F~f
A plurality of modulators 4 M 1 to 4 M perform amplitude modulation with mn, and pass a predetermined frequency to convert it into a working frequency M (fi
A plurality of band filters 41-1 to 4F extract fTlll) to (fi-f昂.). The dyne signal generator 4 is given each frequency signal to be used, and the transmitter △
Similarly to the selection section 2, the ATC signal wave f1 is
~7[]dyne wave (fi-fml) corresponding to ~fn
-(fi-fmn), and the demodulation conditions are set by a 70 dyne signal to Aij, and the modulated waves 11 to f are sent from the track circuit to Aij.
It consists of a receiving section 6 which outputs an output to operate the control relay 'TR' when it receives rl.

In the receiving section 6, as shown in FIG. The modulated wave is modulated to the modulator 6tvl'r with 7u dyne signals <fi-(ml) to (fi-fmn>) to generate a signal of (fi-fm)±fm, which is then applied to the filter in the subsequent stage. 6F2 extracts the fi acid component, and the level determiner 61-
After the level is determined by the rectifier 6R, the output is used to drive the control relay 1.

As is clear from FIG. 1 and the above explanation, conventionally, the receiver also has the same number of modulators (4M1 to /1Mn) and bandpass filters (4M1 to /1Mn) as the number of types of A'l''C signals (fl to fn).
4F1 to 4F4), the configuration becomes very complicated, and as the number of Arc signals increases, the equipment cost increases.

3.2 Purpose of the Present Invention In view of the above points, the present invention has a structure that is simplified, and moreover, it is possible to cope with the increased number of types of Δ-C signals without adding 15 components. The purpose of this invention is to provide an automatic train control device with

3.3 Function of the present invention Basically, the present invention extracts the AI-C signal sent to the track circuit from the input or output of the -C transmitter on the transmitting side, and detects the AI-C signal using a detector. The type of TC signal is detected, and the detection result is converted into AT'C signal f1. f2. ...
Instruction condition u1.corresponding to f9. Ω2. ...(In
The instruction conditions are control signals Sl, s, , , for frequency conversion of signals received by the receiver from the orbital circuit.
... Sn, and the ΔTC signal received from the orbital circuit and the control signals sl, s2 . . . . When Stt is in a corresponding relationship, the frequency-converted signal passes through a bandpass filter to operate the control relay.

3.4 Configuration and Function (Example) Next, an example of the present invention will be described based on the drawings from FIG. 3 onwards.

5- The ATC device according to the present invention, as shown in FIG.
A transmitter A that sends the TC signal to the track circuit 'TC', a detector B that detects the type of the A-f'C signal on the transmitting side and outputs an instruction signal corresponding to each type, and a A receiver C that receives an ATC signal, converts it to a frequency specified by an instruction signal from the detector, and outputs an output when the frequency is a specific frequency, and a control relay D operated by the received output. It consists of

Each of the above constituent elements will be explained in sequence below.

Transmitter Since the transmitter A is the same as that included in the conventional device, the same reference numerals are given to the same components as those shown in FIG.

Detector Detector B is connected to the rear of the transmitting section of the transmitter via a signal pickup coil 7, and as shown in FIG.
A detector 8 detects the envelope of the AT'C signal captured via the signal pickup coil 7-6, and a multiplier circuit 9 multiplies the frequency of the output signal of the detector, the output of which is manually controlled. Signal bandpass filter 1
0, a level detection circuit 11 such as a Schmitt circuit that detects the level of the output signal of this filter, a rectifier circuit 12 that rectifies the output, a multiplier circuit 9, and an output circuit 14.
The control signal s1. s2. . . . A control circuit 13 for sequentially and repeatedly outputting Sn, and an output circuit 14 for dividing the output signals of the rectifier circuit into different types of Δ]C signals and outputting them in parallel.

The multiplier circuit 9 is a random address memory (hereinafter referred to as
It uses memory circuits such as RAM (referred to as RAM) and analog erase lines to store various input AC signals with varying frequencies.
This is a circuit that multiplies the frequency of T and outputs it. For example, it converts an input signal into a digital signal and outputs it to the RAM, and also inputs the input signal to the control circuit 131 in advance to generate a control signal. St, s2,...Sni
Accordingly, the read signal is read out at the 1ζ frequency and the read signal is analyzed.
A circuit that converts the signal into a 1G signal and outputs a -C signal can be used. The control signals 81 to Sn are applied to the multiplier circuit 9 as a multiplier N1. Nz...Nn are signals indicating respective instruction speeds ff11 + m,
, 3m11, in other words, they individually correspond to the modulation signals fm1 to fmn.

C multiplier N1゜Nz−Nn in this multiplier circuit 21
is sequentially and repeatedly switched by control numbers 15 s1, s2, and srI, and when the corresponding instruction speed number is multiplied by the number, its frequency (N1-fml
) (N2 ・1m2) -(N-fmn) is selected so that the center frequency of the passband of the filter 10 is equal to -
There is C. Therefore, if the signal G is one commanded speed, for example, a signal with a frequency fml, a signal with a frequency (N1·fm, =fx) is transmitted to the filter 1 every time a control signal is output.
Since it passes through 0, a pulse signal with a frequency <N1 .fml-fx) is given to the level detection circuit 11 at regular intervals and output from the rectification circuit 12.

The control circuit 13 receives a control signal s1. of logical value "1". s2.
...There is a circuit that repeatedly outputs and overturns Sn, for example, it consists of a generator of a constant frequency ``-J'' signal and an n-bit ring counter that sequentially and repeatedly increments with this ``-1'' signal. , signals Sl, S2 . S.

The output circuit 14 includes a gate circuit 14Δ and a holding circuit 14B that holds the output thereof for a predetermined period of time.

Goo 1 to circuit 14△ are indicated speeds m,, m2...m,
n two-person gates 151 each corresponding to
, 152. . . 15n, each of the two manual input terminals 1 to 1 has the output signal of the rectifier circuit 12 commonly input to one input terminal, and the control signal Sl, 3 to the other input terminal.
2. ...Sn is input separately. In this way, goo 1
~Circuit 14 receives control signals @S1. S2. . . . By opening the gate with sn and outputting the output signal of the rectifier circuit 12, the output signal is divided into Δ1-C signals (for each designated speed) and output in a time-division manner.

9- The holding circuit 14.8 holds each Goomill output of the gate circuit 14Δ for a period slightly longer than the period of the control signals 81 to S, and outputs the output from the instruction signal Q1. ! It outputs as 12°...(ln) and consists of an elementary relay when falling.

As described above, the control signals "1, S2 +...S.

are generated repeatedly in sequence, and the multiplier of the multiplier circuit 9 is N.
1, N2, . . . Nn are repeatedly switched in sequence.

Therefore, if the signal F is, for example, a signal with a frequency fm, a signal with a frequency N1 fm passes through the filter 10, and from the output circuit 14, the signal is output from the gate circuit 14Δ.
151 and the holding circuit 14B, an instruction signal g1 is output.

Even if the signal 92 is a signal of another frequency, only the AND gate corresponding to that frequency outputs the instruction signal 92.・
...gn is output from the output circuit 14.

In this way, the type of ATC signal transmitted from the transmitter to the track circuit is detected by the detector, and the instruction signal g1.g1 corresponding to the type is detected. (12,...h10- are output and given to receiver 0.

Receiver As shown in Fig. 5, the receiver C processes the signals received from the track circuit and determines the indicated speed m12m2,...mn.
A receiving circuit 16 outputs a signal with a frequency that corresponds to the frequency of the receiving circuit 16, which multiplies the frequency of the output signal of the receiving circuit by a predetermined multiple determined as soon as possible based on the instruction signal given from the detector 13. It consists of a processing circuit 17 that performs the following steps.

The receiving circuit 16 includes a bandpass filter 18 that passes the modulated signal fm among the signals input from the track circuit, an AC 111 amplifier that amplifies the output signal, and a detector that detects the envelope of the amplified output signal. ``S20, and the frequency of the signal output from the detector is the frequency fm corresponding to one of the commanded speeds.

fm, ,... or [mn.

The processing circuit 17 includes a circuit 21 that multiplies the frequency of the output jy signal full from the receiving circuit 16, a bandpass filter 22 that passes a specific frequency among its outputs, and a level that detects the output level of the filter. The detection circuit 23, the rectifier circuit 24 for rectifying the detection output thereof, and the control signals 11-1Tl for specifying the multiple of the doubler circuit 21 by manually inputting the instruction signals 91--go from the detectors 3, etc.
The control circuit 25 is also provided with a control circuit 25 that outputs.

The multiplier circuit 21 is similar to the multiplier circuit 19 in the detector B, and is switched by the multiplier corresponding to the control signal, and when the corresponding indicated speed signal is multiplied, the frequency (N. The multiple is selected such that fm) becomes the frequency fD of the passband of the filter 22.

In this way, when the indicated speed signal d detected by the detector B is a signal with a frequency of, for example, fm, the detector B
From there, an instruction signal g1 is input to the control circuit 25 of the receiving PAC, and from the -C1 control circuit 25, a signal Q[t specifying the multiplier N1 is inputted to the multiplier circuit 21. On the other hand, when the frequency of the signal received by the receiving circuit 16 of the receiver from the orbital circuit is also fml, the frequency N - fm multiplied by the multiplier circuit 21 is set to 4, which is the frequency that can pass through the filter 22. , rectifier [S1 path 2/'l outputs. Therefore, control relay D is activated.

If there is an abnormality in the transmission system from transmitter △ to orbital circuit-[C and receiver O, the same AIC signal sent by detector B and receiver C It should be received. Therefore, the command speeds transmitted from the transmitter are ml, m2. ...mTl, the detector 13 outputs an instruction signal 11 corresponding to the indicated speed, which is given to the control circuit 25 of the receiver 191C, and the receiver outputs an instruction signal 11 corresponding to the indicated speed. Since the frequency of the received signal is multiplied by a predetermined multiple by the specified signal, it passes through the filter 22 and is output, thereby operating the control relay D.

3.5 Effects of the present invention As described above, the present invention detects the TC signal sent to the track circuit in the detector connected to the transmitting side and detects the A
In addition to outputting instruction signals 91 to (ln) according to the type of TC signal, the receiver converts the frequency (-) of the signal received from the orbital circuit to a specific frequency based on the instruction signal and converts the frequency band. By passing it through a filter, it is possible to receive and select A'+(C), and operate the control relay by which output. In the case of conversion, the optical generation section and selection section are no longer required, and the configuration can be made into a J cylinder, and the cost of the equipment can be reduced.

Furthermore, if there are many types of AIC signals6, it is difficult to deal with them using basically the same configuration.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a conventional ATC device, and FIG. 2 is a block diagram showing details of the receiving section. FIG. 3 shows 71179 with an ArC device according to the present invention.
4 is a block diagram showing a specific example of the detector shown in FIG. 3, and FIG.
An example of this is a 1-1 ivy diagram. A...Transmitter=14- 13...Detector 1 G...'N) I ifi circuit 0...Receiver 1)...Control relay S→...C times h' h 13...Control circuit 14...Output circuit 1 /1. A...Goo 1~ times ((161413...
・Holding circuit] (5... receiving iζII!l it valley) 7... processing circuit 21...-C('FIllj+) path 22... bandpass filter 25... control circuit maintenance application Person hi 1 signal stock company ne [-1 and]-

Claims (1)

[Scope of Claims] An automatic train control device characterized by having the following configuration requirements A to D. (A) A transmitter that transmits ATC signals to the orbital circuit. (B) AT transmitted to the track circuit on the transmitting side
A detector that detects C signals and outputs detection signals that individually correspond to the types of ATC signals. (C) A receiver that selectively receives the ATC signal inputted from the track circuit according to the detection signal from the detector. (D) A control relay that is operated by the received output of the receiver and controls the transmission conditions of the rear transmitter.