JPS60501139A - A device that transmits an identifiable signal from a base station to a railway vehicle - 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] Transmitted from the base station to the railway vehicle How to increase the number of signals In this invention, a base station equipped with an encoder is connected to a base station equipped with a decoder and connected to the base station. increase the number of identification signals sent to railway vehicles located on sections of railway track that are a method, and at least two base stations each comprising an encoder; two located on two separate sections of railway track each connected to one of the stations The present invention relates to a method for transmitting signals to separate railway vehicles. The above railway car has it.

Each section is equipped with a decoder, and the vehicle moves on both sections of the railway track. be able to. Signals are sent from each separately, and at least a portion of both mixed in terms of

One locomotive located on a section of railway track from a base station using pulse frequency modulation. It is known to send signals inductively. For this reason, the classification of railway tracks is usually It consists of two wires that are insulated from each other. These two lines are connected to a special electric transformer. Each step is terminated at the start and end points of the block by the generator. In general, A typical device can transmit four different information items by different levels of pulse frequency modulation. Transmit. However, with the introduction of high-speed rail systems, the number of transmission of information became necessary. For this reason, we doubled the number of devices and used different information. It has already been proposed to use a second alternating current frequency for the transmission of information.

However, this type of equipment is extremely expensive.

The object of the invention is to, inter alia, add to existing equipment any implementation using alternative and simple means. Increases the number of signals transmitted from the base station to the railway vehicle without making any qualitative changes. The aim is to provide a method that can be used to

According to the invention, the pulse frequency is Transmits both a wave number□ modulated carrier wave and a pulse width modulated carrier wave at the same time This makes it possible to achieve the above objective.

In order to carry out the transmission using the technological means available today, an electrical carrier wave is required. The point is that if alternating current can be used, transmission can be done inductively. It is advantageous.

The signal is transmitted by alternating current pulses of different duration, and the number of pulses If they have half-waves and alternate with intervals between pulses of different lengths, then two sets In order to transmit information simultaneously, the frequency of pulse frequency modulation must be changed by alternating current pulses. It needs to be determined based on the time width of the current pulse and the opening time of the current pulse. The pulse width is It should be determined exclusively by the width of the alternating current pulse.

It can be generated using conventional methods without modification to existing equipment and with existing encoders. For pulse width modulation, in order to be able to process the generated signal, The width of the alternating current pulse is within the existing range of frequency modulated alternating current pulses. It is desirable that

To reliably identify the pulse length, alternating current pulses and pauses The time width of the period corresponds to an integral multiple, preferably an even multiple, of the half-wave time of the alternating current. is advantageous.

The pulse length provided by existing equipment is clearly specified in terms of pulse width. To obtain the pulse, the current pulse is turned on by turning on the alternating current source at the point where the voltage crosses zero. It is desirable to switch this alternating current source off at the point where the current crosses zero.

If the alternating current source is switched electronically, it is possible to switch exactly when it crosses the 0 axis. can be done.

Furthermore, in order to obtain pulses with high reliability, decoding can be performed electronically. desirable. Also, random pulses do not cause confusion or disruption. In order to achieve It is desirable to generate a corresponding output signal only when the

Current pulses with strictly defined durations are used, and these pulses Since the normal time-domain pulse format is replaced with a digital pulse format, the sign The device counts half-waves of current pulses that are digitally switched on and off. is desirable.

Counting is performed regardless of frequency fluctuations in the alternating current that forms the current pulse. In order to calculate the frequency of the alternating current source by a flywheel circuit, the encoder's counting device is It is desirable to be synchronized with. used because it is compatible with existing equipment The decoder reproduces all signals within the range of the conventional signal as exactly the same signal There is a need to.

Furthermore, it is known that signals can be transmitted inductively from a base station to a railway vehicle.

Introduced high-speed rail systems require more and more different signals. However However, at least in exceptional cases, existing locomotives and new types of locomotives are If it is not possible to run on track systems and existing steel conductor track systems. No. For operational reasons, converting existing systems is very expensive and From an upper-level perspective, it is almost impossible.

Another object of this invention is to be able to achieve the above compatibility and also to Both existing railway tracks and signaling systems can be used without The object of the present invention is to provide a method that makes it possible to use the existing equipment of a locomotive.

According to the invention, from at least two base stations each equipped with an encoder, this base station two separate irons on two separate sections of track each connected to one of the stations Achieving the above objectives by using a method for transmitting signals to road vehicles can be done. Each of the above railway vehicles is equipped with a coder, and both of the above railways are equipped with encoders. You can drive on this section. The signals are sent separately from each other, and at least both A portion of is mixed with respect to time. and less from at least one base station. one auxiliary signal is sent to the relevant section of the track and at least one railway vehicle gives a different decoding of the input signal to be decoded if the above auxiliary signal is present. It is characterized by being equipped with a decoder.

Most of the systems introduced here operate on the basis of pulse modulation of alternating currents. It is something that is created. Therefore, the signal passed through one section of the line is /-, I After being frequency modulated, the signal passed through the other section of the line is If it is pulse width modulated with a pulse code modulated auxiliary signal, one iron The road vehicle decoder works with pulse frequency modulation, while the other rail vehicle width is further It has the advantage of working with l'717 width demodulation or pulse code demodulation.

Hereinafter, the present invention will be explained in more detail by way of examples with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the configuration for carrying out the method according to the first aspect of the present invention. FIG.

FIG. 2 is a diagram showing a pulse train corresponding to a signal currently in use.

FIG. 3 shows that the first method according to the invention is followed instead of the single signal currently used. FIG.

FIG. 4 is a schematic diagram illustrating the second method according to the present invention.

The fifth factor is used in the second method according to this invention when pulse modulation is used. FIG. 3 is a schematic diagram representing signals;

As is clear from FIG. and 3. Line segments 2.3 are interconnected at both ends is connected to the preceding and cascaded blocks via transformer 4.5. connected to each other. A 50Hz alternating current is passed through the signal at one end of the plotter. flow is supplied. This alternating current is supplied through the feed transformer 7 connected in series. It will be done. The power supply 8 is connected to a transformer 6 via a conventional mechanical type selection device 9. in pulse mode. The current-carrying pulse J and current body of these signals As is clear from FIG. 2, the time ratio with the stop Q is 35 to 65%. Block At the other end of the circuit, a normal control system 1° has a transformer 11 and a resistor 12 connected in series. It is connected to track section 2.3 via. The control system has locomotives or locomotives within its classification. In addition to indicating whether or not other vehicles are present, the pulse train J, Q, to J4, Q 4 is turned on.

Two inductive pickups 13 and 14 are installed on the locomotive 1 near the track. There is. The gate circuit 15 receives the frequency received by the pickups 13 and 14. The number-modulated pulse train is supplied to the gate circuit 16 in an uncontaminated state. mosquito Thus, the gate circuit 16 always indicates the pulse train sent from the pulse selector 9. Become. Each of the above-mentioned elements is well known and actually used.

An AC power source 8 and a transformer 6 are used to transmit other signals required for high performance operation commands. Another pulse shaping device 17 for modulating the time width of the current pulse is provided between the It is. This pulse shaping device 17 emits pulses of extremely precise duration. The pulse width is the signal s, , S2, S3.54 (7) fluctuation of Fig. 2 and Fig. 3. The pulse width is between t1min and tlmaX.

To generate these pulses with precisely specified pulse widths, a pulse shaping device 17 is electronically switched.

When the pulse voltage of power supply 8 crosses the 0 axis, the pulse is switched on and the pulse current is Once the 0 axis is crossed, the pulse is switched off. In an actual railway system, the load Therefore, after being switched off as seen in Figure 3, the last small non-destructive Only vibration NS occurs.

The new Ihalus duration is the same as the pulse variation range t1min and T 1max, so if the existing gate circuit 16 uses the conventional signal Similarly, if the new signal of FIG. 3 is used, it will work without modification. However In addition, the gate circuit 18 is used to discriminate the pulse width, and a new pulse J process/ 1, Q-work/1, Q□/2 and J□/3, Q-work/, 3 are decoded separately and paired. Corresponding signals S/1, S/2, and S/3 can be formed.

Since the frequency of the alternating current source 8 can be slightly varied for the separate blocks, an additional gain The circuit 18 is continuously synchronized with the average value of the alternating current source 8 associated with its section. It is. This step 4 is performed by the flywheel circuit 19.

To avoid spurious signals caused by inadvertent pulse interruptions, The start circuit 18 operates in several consecutive time periods △jl, △t2,...△tn The output signal is generated only after the exact same signal has been generated repeatedly during the It is composed of

Next, the second method of the present invention will be explained in detail. Figure 5 shows two track sections 20.2. 1 is shown, the former is used for regular railway vehicles, and the latter is used for high-speed vehicles. used.

The line segment 20 is connected to a base station 23 coupled to an encoder 22, and the line segment 20 A signal signal is transmitted through the section.

Similarly, high speed line section 21 is connected to a base station 25 which is coupled to an encoder 24. , signals S2, S3, and S4 are transmitted through the lines. Base station 25 also supports The signal S5 is transmitted to the line section 21.

To the left on track section 20 and track 21, in each example an auxiliary signal S5 is provided. There is a high-speed railway vehicle 26 with a controlled decoder 27, while on the right each A vehicle 28 with a non-switched decoder 29 is located.

FIG. 5 shows electrical pulses corresponding to signals S-S5 of FIG. the above Electrical pulses are used to transmit the signal S□ during the pulse frequency modulation period. and used to transmit signals S2, S3, and S4 during pulse width modulation. .

When used in sections at the end of the track, the signal S can vary in length between tl and t2. Generate a current pulse J to obtain. Signals S2, S3, S4 are used in the high speed section , the current pulses J2, J3, and J4 whose lengths similarly lie between tl and t2 occurs. Therefore, based on FIG. 4 and FIG. J3 will have the same duration as pulse J3, so if pulse width modulation is used, There is a possibility that it cannot be distinguished from J-engineering.

A high-speed locomotive 26 on a normal track segment 20 will In addition to the transmitted signals S2, S3, S4, on high-speed segment 21 The auxiliary signal S5 is transmitted. This auxiliary signal S5 is only on the high-speed section 21, the decoder 27 receives the signals S2', 83', 84'.

If this auxiliary signal were not present, as on the normal section 20, Even if there happens to be a corresponding signal S2, S3, or S, the above-mentioned A signal S□'' corresponding to the solid standard value is generated.

Engraving (no changes to the content) Fig, I Fig, 2 Fig, 3 Fig, 4 Fig, 5 Procedural amendment (formality) April 19, 1985 1.Display of the incident PCT/CH34100o38 2. Name of the invention: Base station, transmission to railway vehicles.

How to increase the number of signals 3. Person who makes corrections Relationship to the incident: Patent applicant Address: Switzerland, Zwe Bar 6951 Creglia, Belle Bosc (no street address) Name: Jaeger, Palter 4. Agent Address: Postal code: 651 7-1-1 Kumoidori, Chuo-ku, Kobe City 5 Date of amendment order Shipping i April 9, 1985 6 Target of correction translation of the drawing 7 Contents of amendment An engraving of the translation of the drawing (no changes to the content) Attached documents One translation of the drawing (2)

Claims (1)

[Claims] (1) Pulse frequency modulated carrier wave and pulse width modulated carrier wave at the same time By transmitting both signals from the base station equipped with the encoder to the base station identification transmitted to a railway vehicle equipped with an encoder on a section of railway track connected to How to increase the number of different signals. (2) Electrical alternating current is used as a carrier wave, and transmission is performed inductively. A method for increasing the number of identification signals according to claim 1). (3) The signal is transmitted as alternating current pulses of varying duration, each similarly Contains several half-waves alternating with current body periods of varying length, pulse frequency modulation The frequency of is determined by the time width of the alternating current pulse and the time width of the current stop period. , characterized in that the pulse width is exclusively determined by the width of the alternating current pulse A method for increasing the number of identification signals according to claim (1) or (2). (4) The width of the alternating current pulse is within the existing range of frequency modulated alternating current pulses. Increasing the number of identification signals according to claims (1) to (3) characterized in that How to do it. (5) The time width of the alternating current pulse and the time width of the current stop period are half waves of the alternating current. Claims (1) to 1, characterized in that the time is an integral multiple, preferably an even multiple. (4) A method of increasing the number of identification signals according to one of the descriptions. (6) The current pulse is switched on at the O crossing of the voltage axis of the alternating current source, and the current pulse The identification according to claim (5), characterized in that it is switched off at the zero crossing of How to increase the number of signals by one. (7) Claim (1) - characterized in that the alternating current source is electronically switched. (6) The method of increasing the number of identification signals described in (6). (8) Claims (1) to (7) characterized in that decoding is performed electronically. A method of increasing the number of identification signals described. (9) When a predetermined number of equal pulse signals appear consecutively in the subsequent stage of the decoder, Claims (1) to 1, characterized in that: (8) The method for increasing the number of identification signals described in (8). (10) The decoder determines the number of half-waves of the current pulses switched on and off and the current body stop. Claims (5) to (6) characterized in that the period is counted digitally. A method of increasing the number of identification signals onboard. (11) The counter of the decoder operates around the alternating current source with the help of a flywheel circuit. The identification signal according to claim (10), characterized in that it is synchronized with the wave number. How to increase the number. (12) As a decoder, it distinguishes from all signals within the range of conventional signals. A claim characterized in that a decoder is used that reproduces exactly the same signal. A method for increasing the number of identification signals according to ranges (1) to (11). (13) from at least two base stations, each with an encoder, on separate sections of the 1. A method for transmitting signals to two separate railway vehicles located at said railway vehicle. Each vehicle is equipped with a decoder and moves on both sections of the railway track. The signals may be sent separately from each other and together at least partially with respect to time. mixed, characterized in that at least one auxiliary signal is transmitted from at least one base station. The said auxiliary signal is transmitted to the relevant section of the track and on at least one side of the railway vehicle. A decoder is provided which, if present, performs a different decoding of the input signal to be decoded. A method for increasing the number of identification signals according to claims (1) to (12). (14) The signal sent to the first section of line (1) is pulse frequency modulated. and is sent to the other section of the line (2) along with the pulse code modulated auxiliary signal. The signal received by the train is pulse width modulated, while the decoder on the railcar uses pulse frequency modulation. The other side of the railway axle is also operated by pulse width modulation or pulse code. Increasing the number of identification signals set forth in claim (13), which are operated by electric power substation. How to add.