RU116438U1 - MONITORING SYSTEM OF TEMPERATURE MODES OF BEARING UNITS OF CARS OF PASSENGER TRAINS - Google Patents

Abstract

1. A system for monitoring the temperature conditions of the bearing assemblies of passenger train cars, characterized in that it contains a monitoring and control unit located in the service compartment of the conductor of a passenger carriage, at least one radio temperature sensor, which is a housing made with the possibility of placing at a control point temperature of the bearing unit of the passenger train carriage, while the housing contains a transceiver for transmitting service messages, as well as radio messages of the sensor state for displaying the monitoring and control unit, a maintenance-free battery with a charge level control circuit, at least one signal repeater made with the possibility of exchanging signals from registered temperature radio sensors, their preliminary processing and information delivery to the monitoring and control unit via a two-wire line. ! 2. The system according to claim 1, characterized in that the monitoring and control unit comprises a touchscreen liquid crystal display. ! 3. The system according to claim 1, characterized in that it contains the number of temperature radio sensors equal to the number of bearing assemblies of the passenger train carriage. ! 4. The system according to claim 1, characterized in that all signal repeaters used in the system are connected to each other and the line monitoring and control unit. ! 5. The system according to claim 1, characterized in that the monitoring and control unit and signal repeaters are connected to the electric power supply system of the passenger carriage. ! 6. The system according to claim 1, characterized in that the monitoring and control unit additionally contains an interface for connecting to the monitoring system �

Description

The technical solution relates to the field of rail transport, namely, the rolling stock of rail transport, and can be used to monitor the status of the rolling stock of rail transport, and namely, the temperature conditions of the axle boxes.

The temperature monitoring system of bearing units of passenger train cars is designed for:

- wireless remote control of current temperatures of axleboxes of wheelsets of a passenger car;

- wireless remote control of the current temperature of the generator gear;

- output information about the current temperature of the axleboxes and gearbox to the control and management unit;

- transmission of an alarm signal to the security control system and communications of the passenger train in case of exceeding the critical temperature;

- processing, storage and display of archival information on the temperature of axlebox bearings and gearboxes.

It is known (SU, copyright certificate 527328) a device for monitoring the temperature of an axle box of a car, comprising a contact temperature sensor, an opening contact of which is connected between one of the terminals of the return winding of the remote switch and the positive pole of the power source, an accident indicator connected to the power source through the closing contact of the remote switch, semiconductor triodes of direct conductivity, resistors and capacitors. The NC contact of the remote switch is connected between one of the terminals of the signal winding and the remote switch and the positive pole of the power source. The emitter-collector junctions of the triodes are connected between the terminals of the corresponding windings of the remote switch and the negative pole of the power source. The base of one of the triodes is connected to the connection point of the signal winding of the remote switch and through the parallel connected one of the resistors and the capacitor to the negative pole of the power source, and the base of the other triode is connected to the connection point of the return winding of the remote switch with the NC contact of the temperature sensor and through another resistor - to the negative pole of the power source.

A disadvantage of the known device should be recognized as unsuitable for operational control of the temperature of the axle box, i.e. impossibility of predicting an accident.

It is also known (SU, copyright certificate 929484) a device for automatic control of overheating of axleboxes. The known device contains temperature sensors installed in wheel axles and connected to a power source through resistors and to a threshold element, an output transistor, in the collector circuit of which are included alarm elements, and isolation diodes. It is also equipped with additional threshold elements, an OR element, and a memory element connected to the collector of the output transistor through an isolation diode. The outputs of the first additional and threshold elements are connected through the OR element to the base of the output transistor, one input of the first additional threshold element is connected to temperature sensors, and the other to a reference voltage source and to the input of the second additional threshold element, the output of which is connected to the control input of the memory element.

A disadvantage of the known device should also be recognized as unsuitable for operational control of the temperature of the axle box, i.e. impossibility of predicting an accident.

The closest analogue of the proposed device can be recognized (RU, patent 2220866) a device for remote monitoring of the temperature state of axle boxes of vehicles. The known device contains an electronic tag made with the possibility of remotely transmitting information to outdoor devices placed along the vehicles, the electronic tag is placed inside a bowl-shaped element fixed by one of the bolts designed to attach the cover to the axle box, and using two electrically conductive documents, which are connected to the circuit for setting the code of the signal transmitted by the electronic tag is connected to a temperature sensor, which is located in the internal axial cavity the same bolt. The temperature sensor includes a housing made in the form of a thin-walled tubular element, the outer side surface of which is closely adjacent to the side surface of the inner cavity of the said bolt. Inside the body of the temperature sensor there is a sleeve made of an insulating material, in which there are made through channels for placing electrically conductive elements from the electronic tag, a fusible link made of an electrically conductive material with a set melting point, a paraffin layer, and a fusible link is placed between the ends of the electrically conductive elements exposed from insulation and directly in contact with them and with a layer of paraffin.

A disadvantage of the known technical solution should be recognized as the unreliability of the information received due to the dependence of the signal generated by the device on the ambient temperature, which introduces an error in the measurement of the temperature of the axle box. In addition, the known device is not suitable for determining the initial stage of heating the axle box, at which a warning of an emergency is still possible.

The technical problem solved by the proposed design is to enable operational monitoring of the condition of the axle box.

The technical result obtained by the implementation of the proposed device is to prevent accidents of the rolling stock of rail vehicles due to malfunctioning of the bearing assemblies of the passenger train carriage.

To achieve the specified technical result, it is proposed to use the developed system for monitoring the temperature conditions of the bearing assemblies of passenger train cars. The developed system for monitoring the temperature conditions of the bearing assemblies of passenger carriages of passenger trains contains a monitoring and control unit located in the service compartment of the passenger carriage conductor, at least one temperature sensor, which is a housing made with the possibility of placing the passenger unit of the carriage of a passenger train at a temperature control point, at the same time, in the case of which the transceiver is located for transmitting service messages, as well as radio messages of the sensor status for output and on the display of the control and management unit, a maintenance-free battery with a charge level control circuit, at least one signal repeater configured to exchange signals from the temperature sensors registered in it, their preliminary processing and the issuance of information to the control and management unit via a two-wire lines.

The used wireless temperature sensor is a completely sealed electronic radio device designed to measure the current temperature at the point of installation. It should be located in a compact housing with an M16 × 1.5 external thread at the bottom. The temperature measurement range should be from -50 ° C to + 100 ° C with an accuracy of ± 1 ° C at temperatures above + 60 ° C. The service life of the built-in power supply of the temperature sensor must be at least 8 years.

The signal repeater should be a device designed to exchange signals from the temperature sensors registered in it, their preliminary processing and the issuance of information to the monitoring and control unit via a two-wire line. All repeaters of the car signal must be interconnected with the control unit and control two-wire line. The power of the signal repeaters is carried out from the control and control unit along the same line with a voltage of 12 V DC. Information is transmitted from the signal repeater to the control and control unit upon request from the control and control unit according to a special protocol.

The control and management unit is a wall-mounted electronic device. The power supply of the control and control unit is produced from the on-board network of the passenger car in the range from 48 V to 140 V DC. The control and management unit includes a touch-sensitive liquid crystal display for tuning and control. The control and management unit must receive operational information from all the car’s temperature sensors on the temperature of the monitored units. Also, the control and management unit must receive data on the state of the batteries of the temperature sensors. All information received must be analyzed and processed by the microprocessor of the device in accordance with the control program and the current settings, and then displayed on the built-in liquid crystal display. During the operation of the monitoring system, the following information should be displayed on the display of the control and management unit:

- system menu;

- name of the current mode;

- mnemonic diagram of the location of the RDT on the car;

- value of current temperatures at the point of installation of the RTD;

- the state of the batteries of the RTD;

- color indication of the degree of heating of the bearing units;

- current time (MSC);

- reports of inoperability of the RTD.

In a preferred embodiment, the system comprises a number of temperature sensors equal to the number of bearing assemblies of a passenger train carriage. This increases the safety of train movement due to the completeness of monitoring the condition of the bearing assembly of each axle box of each car. In addition, in a preferred embodiment of the system, all signal repeaters used in the system are connected to each other and to the control and control unit of the two wire lines. It also improves train safety. In some embodiments of the system, the monitoring and control unit, as well as signal repeaters are connected to the electric power supply system of the passenger car. Although it is possible to use an autonomous source of electrical power for the control unit, as well as signal repeaters.

In the case of using a security and communication control system in a passenger train, it is desirable that the control and management unit additionally contains an interface for connecting to the security and communication control system of the passenger train for transmitting alarm messages about the possible overheating of bearing assemblies. Since the temperature sensors installed in the bearing assemblies can fail, it is desirable that the system additionally contains a recording device designed to register the temperature sensors in the system.

The registration device should be a wearable device designed to register temperature sensors in the system. The registration device should be part of a group spare parts system for monitoring the temperature conditions of the bearing assemblies of passenger train cars. The power of the registration device should be carried out using replaceable elements.

The following display and control elements should be on the registration device:

- numeric keypad;

- a means of displaying information.

During the operation of the registration device, the output of the following information should be provided: the successful completion of the operation; inability to complete the operation; readiness for work Registration devices.

The temperature monitoring system of the bearing units of passenger train wagons is designed for continuous round-the-clock operation. The operating mode is continuous, round-the-clock.

In the initial preparation for operation, the temperature monitoring system of the bearing assemblies of passenger train carriages should provide the following functions:

- registration of temperature sensors mounted in car units;

- identification of the position numbers of registered temperature sensors on the mnemonic diagram of the control and management unit.

When operating during movement (operating mode), the temperature monitoring system of the bearing assemblies of passenger train carriages should provide the following functions:

- real-time monitoring of temperature values of the bearing units of the car, on which the temperature sensors are installed with the output of current information to the display of the control and management unit;

- turning on the light and sound alarms and issuing an alarm to the control equipment of the train (closing the contact of the built-in relay) when the temperature value of at least one monitored unit of the car leaves the specified allowable range;

- the ability to send a message about the accident to the security system and communications of the passenger train;

- the termination of the alarm and the removal of the signal to the control equipment after the return of the temperature of the car unit to the allowable range of values. At the same time, an alarm cancellation message should be sent to the passenger train safety and communication control system;

- the possibility of registering new temperature sensors in the system if it is necessary to replace the sensor.

The use of the developed system for monitoring the temperature conditions of the bearing units of passenger train cars ensures the prevention of accidents in the rolling stock of rail vehicles due to malfunction of the bearing assemblies of the passenger train car, since the driver, having received information about the overheating of the bearing assembly, manages to reduce the speed of the train until it stops.

Claims (7)

1. A system for monitoring the temperature conditions of the bearing assemblies of passenger carriages of passenger trains, characterized in that it comprises a control and control unit located in the service compartment of the passenger carriage conductor, at least one temperature sensor, which is a housing configured to be placed at a control point the temperature of the bearing assembly of the passenger train carriage, while the transceiver for transmitting service messages, as well as radio messages of the sensor status for output to the display of the control and management unit, a maintenance-free battery with a charge level control circuit, at least one signal repeater configured to exchange signals from the temperature sensors registered in it, preprocess them and provide information to the control and control unit via a two-wire lines. 2. The system according to claim 1, characterized in that the control unit comprises a touch-sensitive liquid crystal display. 3. The system according to claim 1, characterized in that it contains a number of temperature sensors equal to the number of bearing assemblies of a passenger train car. 4. The system according to claim 1, characterized in that all the signal repeaters used in the system are interconnected with the line monitoring and control unit. 5. The system according to claim 1, characterized in that the control unit, as well as signal repeaters are connected to the electric power supply system of the passenger car. 6. The system according to claim 1, characterized in that the control and management unit further comprises an interface for connecting to a passenger train safety and communication control system for transmitting emergency messages. 7. The system according to claim 1, characterized in that it further comprises a recording device for registering temperature sensors in the system.