RU85433U1 - LOCOMOTIVE CONTROL DEVICE WITH ALS SIGNAL RECEIVING MODULE - Google Patents

Abstract

A locomotive control monitoring device with an ALS signal receiving module, containing a safety control circuit, two central processing modules, two motion parameter measuring modules connected to the CAN interface, the inputs of which are connected to a path and speed sensor, an ALS signal receiving unit connected to receiving coils a locomotive, a route module with a satellite navigation receiver connected to an antenna of the satellite navigation system, and a radio channel module connected via a radio modem to a radio antenna, wherein safety control through the amplifier is connected to the control input of the electro-pneumatic valve, characterized in that a digital interface is inserted into the ALS signal receiving unit, connected between the receiving module and the ALSN signal decryption module, and a floating threshold computer for distinguishing pulses and intervals between them, the output of which is connected to the input of the shaper of the binary sequence of samples of the signal, and the determinant of code cycles is introduced into the decryption module, I realize s cluster method for isolating individual code signal ALSN cycles and their decoding, the output of which is connected to the input of the traffic condition of the locomotive.

Description

The utility model relates to the field of railway automation, telemechanics and communications and can be used on locomotives, motor carriages in order to increase the safety of train traffic.

It is known "Train device for automatic locomotive signaling with speed control" (see patent RU No. 2120393 class B61L 25/06 from 1998.10.20), containing a speed reference unit, a signal receiving unit, blocking and bandpass filters, a braking control unit, an installation trigger, multiplexer, actual speed counter, dynamic signal converter, pulse generators, initial setup circuit, frequency dividers, OR element, JK- and D-triggers time delay circuit, decoder counters, galvanic matching circuits tion isolation, decoder signal indications of the automatic speed control, transformer unit, decoder signal indication includes converters dynamic signals, blocks the optronic decoupling decoders signals buffer register, pulse generator, pulse shaper sequence, D-flip-flops and the blocks forming the output signals.

The disadvantages of this device are the lack of signal indications for prompt decision-making by the driver, the lack of proper flexibility in choosing the optimal speed mode, outdated elemental base.

Closest to the claimed technical solution is the "Control device for controlling the locomotive and the vigilance of the driver" (patent RU 2262459, B61L 25/04 from 2003.11.03).

The essence of the invention consists in determining the maximum permissible speed mode of a locomotive and monitoring its observance, in determining the coordinates of the train without the participation of station devices, in determining the number of free block sections along the train, and in the possibility of processing data from probable additional sources of information. The device modules interact with each other through the CAN system interface, using digital radio communication and satellite navigation. The invention improves the reliability of the control of interval regulation and the safety of train traffic on highways.

The disadvantage of this device is the lack of stability of the reception of information signals ALS.

The technical result of the proposed utility model is to eliminate this drawback, namely, to increase the stability of reception of ALS signals on a locomotive through the use of fundamentally new algorithms for receiving and decoding ALSN signals.

The technical result is achieved in that in a control device for controlling a locomotive with an ALS signal receiving module containing a safety control circuit, two central processing modules, two motion parameter measurement modules connected to the CAN interface, the inputs of which are connected to the path and speed sensor, a reception unit ALS signals connected to the receiving coils of the locomotive, a route module with a satellite navigation receiver, connected to the antenna of the satellite navigation system, and a radio channel module connected to without a radio modem with a radio antenna, while the safety control circuit is connected via an amplifier to the control input of the electro-pneumatic valve, according to the proposal, a digital interface is inserted into the ALS signal receiving unit, which is connected between the receiving module and the ALSN signal decryption module, and a calculator is included in the ALSN signal receiving module floating threshold for distinguishing pulses and intervals between them, the output of which is connected to the input of the shaper of the binary sequence of samples of the signal, and to the decryption module in a code cycle determinant has been introduced that implements the cluster method for isolating individual code cycles of the ALSN signal and deciphering it, the output of which is connected to the input of the conditioner of the locomotive traffic light.

The transmitter for the floating threshold for distinguishing between pulses and the intervals between them, which is part of the receiving module, determines the values of this threshold for each signal sample individually based on the average power of the signal pulses not distorted by noise in the vicinity of this sample for a time interval of 1.9 sec. The binary sequence generator delimits the pulses and intervals of the ALSN signal using the calculated value of the floating threshold. The code cycle determinant included in the decryption module implements the cluster method for extracting individual code cycles of the ALSN signal and their decryption. The cluster method is based on the calculation of the similarity (distance) of a signal received over a fixed (up to 1.9 sec) time interval with a set of patterns of ALSN signal code cycles, after which, if the nearest pattern is at a distance not exceeding a fixed limit value, decryption is considered successful, otherwise the signal is recognized as irreparable or absent. The conditioner of the locomotive traffic light, to the input of which the signals of decryption of the ALSN code cycles are received, determines the state of the locomotive traffic light by their current sequence. The practical application of the described ALSN signal reception and decryption scheme provides a higher level of quality control of the locomotive traffic light indications in the driver's cab, thereby increasing the level of train safety.

Structurally, the device is made in the form of a common unit and consists of the following components:

- two modules of the central information processing center, which determine the configuration of the device by comparing information from two IPD modules and draw conclusions about the reliability of this information, based on data from other modules determine the optimal speed mode, monitor the vigilance of the driver, according to the results of vigilance control and non-compliance high-speed mode decide on emergency braking. The ICC modules exchange information with each other and issue it to a secure control circuit of the security control module, which, when the data are mismatched across the two processing channels, restarts the device;

- two modules for measuring the motion parameters of the IPD, which determine the actual speed of the train according to the data from wheel sensors of the track and speed of the traffic police and from the satellite receiver of the joint venture and have the ability to connect other measuring sensors to them in the future;

- the MP-ALS signal receiving unit, which receives and decodes signals from the receiving coils of the ALSN and ALS-EN devices from the rail circuit and determines the permissible speed of the train, monitors the following boundaries of the block sections, forms the target and permissible speeds;

- MM route module with a satellite navigation receiver SP, which determines the coordinate of the train according to the data from the satellite receiver, generates motion parameters according to data from the electronic map recorded in the flash memory of the MM route module;

- RK radio channel module, which transmits train data and motion parameters to the station, receives speed limit commands from the station, decodes the received information and ensures its storage until the next communication session, as well as organizes the exchange of information in the interval regulation mode, in the alert mode of working on the tracks, in the mode when the railway stations are equipped with electrical centralization;

- a safe control circuit of the safety control module and an electro-pneumatic valve amplifier.

External products for this device are:

- a radio antenna with a radio modem;

- satellite navigation antenna;

- receiving coils ALSN and ALS-EN;

- DPS path and speed sensors;

- EPA electro-pneumatic braking valve.

All components are designed using modern components. The software of the modules is written in assembly language and high-level hardware-oriented language C for microcontrollers of the AT-91 family, ADSP-2186 Analog Devices. For broadcasting program files written in Cu for a continuous channel signal decoder implemented on the AT89C51 CC03 microcontroller, ATMEL company using the PDS51 integrated environment.

Fig. 1 shows a diagram of a control device for controlling a locomotive with an ALS signal receiving module, comprising: an EPA electro-pneumatic valve amplifier (1), the output of which is connected to the input of the electro-pneumatic valve (11), and the input - to the output of the safe control circuit of the safety control module (2) , the inputs of which are connected to the outputs of the central information processing modules of the MTC (3) and MTC (4), which are interconnected, two modules for measuring the motion parameters of the IPD (5) and IPD (6), the inputs of which are connected to the path and speed sensor of the traffic police ( 17), the signal receiving unit MP-ALS (7), the input of which is connected to the receiving coils ALSN and ALS-EN (18), the route module MM (15) with the satellite navigation receiver SP (14), the input of which is connected to the satellite navigation antenna SNA (19), RK radio channel module (16), one of the inputs of which is connected to the radio modem (21), which is connected to the radio antenna (20).

The device operates as follows

The device starts working immediately after turning on the power. Before each trip of the locomotive, the train motion parameters necessary for the operation of the device must be entered in the flash memory of the route module MM (15). The signals ALSN and ALS-EN from the rail circuit through the receiving coils ALSN and ALS-EN (18) are sent to the signal receiving unit MP-ALS (7), where in the case of receiving signals ALSN in the receiving module PR (8), the calculation of the floating threshold distinguishing pulses and intervals in the runway (10), transferring it further to the PDP (11) and extracting on its basis a binary sequence of pulses and intervals of the input signal (in PDP), which is transmitted further to the DS decryption module (9), then to the DS (9) ) is performed: in OCC (12), the cluster code is allocated in the sequence obtained by the cluster method ALSN cycles and their decryption is performed, the driver of the locomotive traffic light FS (13) determines the indication of the locomotive traffic light corresponding to the decryption signals transmitted by the OCC (12), and also determines the number of free block sections ahead of the train, the target speed (speed, with which the locomotive must follow the border of the current block section), the maximum permissible speed of the train in this block section.

From the MP-ALS block (7), the data is transmitted to the central information processing modules of the MTC (3 and 4) to make a final decision on the permissible speed in this block section.

The signals from the wheel sensors of the path and speed of the traffic police (12) enter the modules for measuring the parameters of the movement of the IPD (5 and 6), where they form the values of the actual speed of the train and the distance traveled. These data are transmitted to the central processing units of the ICC information (3 and 4) for comparison with the permissible speed and deciding on emergency braking.

The signals from the satellite navigation receiver SP (14) through the MM route module (15) go to the IPD motion parameters measurement modules (5 and 6), where based on these signals and data from the electronic map located in the MM route module (15), ( not shown in Fig. 1) the location of the train and the distance to the obstacle are determined. These data are transmitted to the central processing units of the ICC information (3 and 4) for calculating the speed mode.

The signals from the radio antenna (20) through the radio modem (21) enter the module of the radio channel of the Republic of Kazakhstan (16), where they form data on traffic restrictions on the current section of the path, which are transmitted to the central information processing modules of the MTC (3 and 4) for making a final decision about the permissible speed in this block area.

To increase the reliability of the device and in accordance with the safety requirements, the device uses hardware redundancy, namely: the central processing units of the central information processing center (3 and 4), the modules for measuring the motion parameters of the IPD (5 and 6) are made as two-channel. Each of the two-channel modules for measuring the motion parameters of the IPD (5 and 6) and the signal receiving unit MP-ALS (7) process the data independently from each other and transmit them to the central information processing modules of the MSC (3 and 4). Each of the channels of the central information processing modules of the MSC (3 and 4) independently of the other channel processes the data and decides on the high-speed mode. Then, the central processing units of the ICC information (3 and 4) exchange the results with each other via the inter-module interface and each module outputs the result to a secure control circuit of the security control module (2).

When the data received on two channels from the central processing units of the MSC information (3 and 4) is inconsistent, the secure control circuit of the security control module (2) initiates a general restart of the device. The safe control circuit of the safety control module (2) through the amplifier of the EPA electro-pneumatic valve (1) supplies voltage to the EPA electro-pneumatic valve (11), if emergency braking is necessary, the power is automatically removed from the EPA electro-pneumatic valve (11).

The power supply of the device is carried out according to the following principle: the power supply from the on-board network is supplied to secondary power sources, which convert the voltage level of the on-board network to the voltage level required by each module.

Claims (1)

A locomotive control monitoring device with an ALS signal receiving module, containing a safety control circuit, two central processing modules, two motion parameter measuring modules connected to the CAN interface, the inputs of which are connected to a path and speed sensor, an ALS signal receiving unit connected to receiving coils locomotive, a route module with a satellite navigation receiver connected to an antenna of the satellite navigation system, and a radio channel module connected via a radio modem to a radio antenna, wherein safety control through the amplifier is connected to the control input of the electro-pneumatic valve, characterized in that a digital interface is inserted into the ALS signal receiving unit, connected between the receiving module and the ALSN signal decryption module, and a floating threshold computer for distinguishing pulses and intervals between them, the output of which is connected to the input of the shaper of the binary sequence of samples of the signal, and the determinant of code cycles is introduced into the decryption module, I realize s cluster method for isolating individual code signal ALSN cycles and their decoding, the output of which is connected to the input of the traffic condition of the locomotive.