EA043333B1 - METHOD AND SYSTEM FOR AUTOMATIC CONTROL OF ELECTRIC TRANSPORT CONTACT WIRE - Google Patents

Description

Field of technology to which the invention relates

The invention relates to the field of radio engineering and remote monitoring of contact connections of live parts and can be used for remote monitoring of railway infrastructure when monitoring compensating devices and providing remote monitoring of breaks, sagging and accelerated wear of the contact wire of the gearbox and pantographs.

State of the art

High-speed train traffic places stringent requirements on railway transport infrastructure facilities and devices, in particular on the contact network, the mechanical strength, geometric parameters and technical condition of the elements of which determine the safety and uninterrupted operation of trains.

A widely used approach today for the maintenance and repair of the contact network of railway tracks is to identify the condition of the elements of the contact network through periodic inspections and direct measurements. Manual measurements and periodic inspections of the contact network are not cost-effective, are not fast enough, and often require re-checking.

A system for monitoring the parameters of the railway contact network is known from the state of the art (see [1] RF patent for utility model No. 68977, MPK V60M1/12, publ. 12/10/2007), containing a contact wire suspension height sensor, a contact wire position sensor in plan , ambient temperature sensor, power source, signal collection and transmission unit, control panel, device for determining the position of the contact wire in plan with n contact wire position sensors placed in it, n sensors for the presence of interference in the current collection process and a block for collecting and transmitting information, block input of speech comments, the output of which is connected to one of the inputs of the signal processing unit, and the output of the contact wire suspension height sensor is connected to one of the inputs of the information collection and transmission unit of the device for determining the position of the contact wire in plan, and the power supply of the control system is made with a built-in optical channel and contains an AC-to-DC voltage converter, a DC-voltage converter of the on-board network of the railcar to high-frequency AC voltage, a transformer with a magnetic core made of a set of toroidal cores and two turns of high-voltage wire, the terminals of one turn of the high-voltage wire, which is the primary winding of the transformer, are connected to the inputs converter of direct voltage of the on-board network of the railcar into alternating voltage of high frequency, and the conclusions of the second turn of the high-voltage wire, which is the secondary winding of the transformer, are connected to the inputs of the converter of high-frequency alternating voltage into direct voltage, the output of which is connected by an optical feedback circuit to the input of the DC converter of the on-board network of the railcar to high frequency alternating voltage, and the output of the high frequency alternating voltage to direct voltage converter is connected to the input of the device to determine the position of the contact wire.

The disadvantages of the system include the presence of power supplies for sensitive elements and the lack of resistance to external climatic influences of the system components. The reliability of the system here depends on the transformer, the device of which is vulnerable to damage in harsh climatic operating conditions.

A device for measuring and recording the wear of a contact wire is known (see [2] RF patent No. 2120866, MPK V60M1/12, V60M1/13, B60L3/12, publ. 10/27/1998), containing a linear light source with a length exceeding the maximum possible distance between the extreme positions of the contact wire zigzag and a reflector placed on the roof of the laboratory car, while the light source through the contact wire is optically connected to an optoelectronic head containing a lens and an integrated multi-element photodetector array. The output of the optoelectronic head is connected to the input of the electronic unit for primary information processing, the output of which is connected to the computer. The device measures wear, suspension height and zigzag of the contact wire and makes it possible to increase accuracy, speed, simplify the design and increase reliability in operation and configuration.

The disadvantages of the system include the presence of a high probability of obtaining unreliable information by receiving data from cameras in conditions of poor visibility and harsh climatic operating conditions. Also, the disadvantages of the known systems for monitoring the state of the contact network using laboratory cars is that these measurements are periodic in nature, and it does not provide the ability to monitor the stress-strain state of the elements of the contact network.

To detect changes in the state of the contact network at an early stage, constant continuous monitoring of its elements is necessary. A modern system for the current maintenance of a contact network requires the use of measuring systems that make it possible to automatically monitor the condition of contact network elements without a lot of time and with minimal involvement of personnel.

A device is known for monitoring wear and zigzag of the contact wire of the electrical network of railway transport (see [3] RF patent No. 2155678, IPC B60M1/12, B61K9/08, publ.

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09/10/2000) containing a sensor, a photodetector connected to the sensor by a flexible fiber optic cable, a memory unit, and a recorder. The sensor contains a high-frequency generator, a meter based on inductance coils, a signal processing unit for the meter, an analog-to-digital converter and an LED.

The disadvantages of the device include the presence of a connection between the sensor and the photodetector via a fiber optic cable. The presence of a high-frequency generator at the sensor indicates the need to use power supplies. The use of optical fiber to transmit information from the sensor to the photodetector significantly increases the complexity of using such a device in railway transport.

A system for monitoring railway infrastructure objects is known (see [4] RF patent No. 2584756, IPC B61K9/08, published on May 20, 2016), containing at least one station for collecting and primary data processing and measuring instruments connected to it and to each other via radio communication modules located in critical places of controlled railway infrastructure objects, a central data collection unit associated with a data collection and primary processing station, each measuring module includes an autonomous power supply, touch sensors, a transceiver and a microcontroller, each data collection and primary processing station includes an autonomous power source, a controller and a transceiver connected via a radio channel to the transceivers of the measuring modules, and the central data collection unit includes a computing unit, a database, a control unit and a transceiver connected via a radio channel to the transceivers of the data collection and primary processing stations, with the measuring modules in In one of the embodiments, they are made with the ability to measure the tension of the contact network, and each such module is configured to be installed in a movable roller of the compensating suspension of the contact or support wire, mounted on a controlled support, and additionally includes a sensor for measuring the rotation angles of the movable roller and an ambient temperature sensor environment.

The disadvantages of the known solution include the need to use power supplies, high labor intensity during installation and configuration in railway transport, and lack of temperature control of the contact wire.

A known system for diagnostics and remote monitoring (SDUM) of the railway contact network (see [5] RF patent No. 2631891, MPK V60M1/12, published 09/28/2017), including contact wires, cables and load-compensating devices mounted on anchor supports, containing measuring devices located along the contact network along its entire length, connected to information collection and transmission units stationary located along the contact network, which are connected via wired and/or wireless communication with an intermediate information concentrator SDUM located at the hub station, connected via wired and/or wireless communication with a single hub of information about the state of the elements of the railway contact network, while the measuring devices are made in the form of sensors for measuring the tension force of cables and wires of the contact network, located on sections of the supporting cable and contact wire directly behind the rollers of the load-compensating device blocks and/or above the garlands loads of load-compensating devices and/or on middle anchorage cables, each measuring device is connected via a wire connection to a nearby information collection and transmission unit, each of which contains an autonomous power source, a microprocessor device for primary analog-digital processing of information from the sensor for measuring the tension force of the cables and contact network wires, and a radio communication device between the unit and the intermediate information concentrator SDUM.

The disadvantages of the system are the presence of power supplies, lack of temperature control of the contact wire, and high labor intensity during installation.

The closest analogue is a method and system for diagnostics and remote monitoring of the railway contact network (see [6] RF patent No. 2444449, IPC V60M1/12, published 03/10/2012) collecting information about the state of the elements of the contact network, transferring the collected information and subsequent assessment of the technical condition of the elements of the contact network, and the collection and transmission of information about the state of the elements of the contact network is carried out using SDUM information collection and transmission units, permanently placed along the contact network along its entire length, while acoustic and vibration characteristics are continuously recorded using sensors located in the blocks, the characteristics of changes in the magnetic field, the temperature of the elements of the contact network, the measured values are transmitted via a radio communication channel to intermediate information concentrators located at node stations along the entire length of the contact network, which ensure the collection and analysis of information from the block sensors with subsequent transmission of data to a single concentrator of information about the state of the elements railway contact network. The system for diagnostics and remote monitoring of the railway contact network includes consoles placed on the anchor supports of the contact network, a support cable, strings, contact wire, load compensating devices for the support cable and contact wire and contains sensors for parameters of the technical condition of the elements of the contact network, and in sections of the support cable and contact wire wires located directly behind the rollers of the blocks of load-compensating devices and/or above the garlands of loads of load-compensating devices, which are placed on the anchor supports of the contact network, information collection and transmission blocks are permanently fixed along the entire length of the contact network, with each collection and transmission block information contains a set of sensors for parameters of the technical condition of the elements of the contact network, including sensors for vibroacoustics and vibration diagnostics of elements of the contact network, a magnetic field sensor and a temperature sensor, as well as an autonomous power supply, a microprocessor device for primary analog-digital processing of information from the sensors of the unit, a radio communication device between the unit and an intermediate information concentrator SDUM located at the hub station, which is connected via wired and/or wireless communication with a single concentrator of information about the state of elements of the railway contact network.

The disadvantages of the method and system include the presence of power supplies that require maintenance (replacement), limited resistance to external influences (negative operating temperatures), the complexity of the information collection and transmission unit and its high cost, the high labor intensity of use in railway transport, the lack of control the tension of the contact wire. At the same time, the known technical solution does not allow one to quickly evaluate the tension force of the wires and cables of the contact network.

The essence of the invention

The objective of the invention is to provide operational, autonomous, wireless control of the contact wire of the contact network of railway transport to prevent and timely prevent breaks, sagging and accelerated wear of the contact wire of the gearbox and contact connections in a wide range of influencing factors. The problem is solved by interrogating the temperature sensors and the tension force of the contact wire by the reading device via a radio channel. Information from passive sensors allows you to quickly analyze the dynamics of changes in the state of the contact wire. The received information is transferred to mobile diagnostic systems or automated user control systems.

The technical result is the prevention of emergency situations due to the ability to predict the achievement of specified control values for the condition of wires and cables in order to issue appropriate commands to take the necessary measures.

The stated problem is solved, and the technical result is achieved through a method for automatically monitoring the contact wire of electric transport, including the formation and sending of a polling signal, collecting and processing information about the state of the elements of the contact network using devices for reading information about the temperature and tension force of the contact wire from the received polling signal , from force and temperature sensors, while the device for reading temperature information generates and sends a polling signal to the interrogated temperature sensor, while the incoming polling signal is sent to the antenna of the interdigitated transducer of the temperature sensor, which converts the electromagnetic polling signal into a surface acoustic wave, propagating along the surface of the piezoelectric substrate of the temperature sensor, is partially reflected from the starting, intermediate and final reflecting structure, and returns to the interdigital transducer, where it is converted back into an electromagnetic signal in the form of time-delayed reflected pulses returning to the device for reading temperature information from using a transceiver antenna; a device for reading information about the tension force of the contact wire generates and sends a polling signal to the interrogated force sensor, which is a force-measuring washer, while the incoming polling signal is sent to the transceiver antenna of the interdigitated force transducer, which converts the electromagnetic polling signal into a surface acoustic wave, propagating along the surface of the piezoelectric plate of the force sensor resonator, passes through the electrodes, encountering inhomogeneity, and returns to the interdigital transducer, where it is converted back into an electromagnetic signal in the form of reflected pulses delayed in time, returning to the device for reading information about the tension force of the contact wire with using a transceiver antenna; moreover, simultaneously with the generation of the interrogation signal, the device for reading temperature information additionally generates an interrogation ultrasonic signal sent by the ultrasonic emitter to the suspended compensator unit, which returns to the ultrasonic receiver; Based on the received data, devices for reading information about the temperature and tension of the contact wire process the received information and transmit it to external consumers.

The technical result is also achieved due to an automatic control system for the contact wire of electric transport, placed on a reinforced concrete support, to which a supporting cable is attached, a compensator block suspended on the cable using rollers, a contact wire, due to temperature and tension sensors of the contact wire, and a reading device information about the temperature and tension force of the contact wire from sensors, an ultrasonic receiver with an antenna and an emitter with an antenna, while the temperature sensors are made in the form of wireless radio frequency passive temperature sensors with an external slot antenna installed on the contact wire, and the tension force sensors of the contact wire are made in in the form of wireless radio frequency passives

- 3 043333 force sensors installed using fastening mechanisms into the cable gap in the places between the anchor bracket with the rod and the suspension insulators, as well as into the cable gap of the compensator block. Wireless radio frequency passive temperature sensors are acoustoelectronic passive radio frequency sensors on surface acoustic waves, containing a sensitive element in the form of a piezoelectric substrate, on the surface of which there is an interdigital transducer connected to an antenna, and at least three reflective structures sequentially located along the surface of the piezoelectric substrate , and the antenna of the interdigital converter is connected to an external slot antenna. Wireless radio frequency passive force sensors are made in the form of a force-measuring washer, clamped by a fastening mechanism when the cable is tensioned between metal washers made of stainless steel, while the force-measuring washer contains a keyway in which two resonators on surface acoustic waves are installed, connected by high-frequency cables to the transceiver antennas . Each surface acoustic wave resonator is a piezoelectric plate on which an interdigitated transducer with an antenna is located, containing a set of electrodes, as well as reflectors, while the antenna of the interdigitated transducer is connected to the transmit-receive antenna using a high-frequency wire. Two metal washers made of stainless steel, embedded in a washer with a collar, are pressed to the force-measuring washer. The reflective structures are made in the form of a starting, intermediate and final reflecting structure.

Brief description of drawings

Fig. 1 - automatic control system for the contact wire of electric transport (general view with temperature sensor).

Fig. 2 - view A in Fig. 1.

Fig. 3 - automatic control system for the contact wire of electric vehicles (general view with a force sensor).

Fig. 4 - view B in FIG. 3.

Fig. 5 - design of a wireless radio frequency passive temperature sensor.

Fig. 6 - conventional topology of a wireless radio frequency passive temperature sensor.

Fig. 7 - force-measuring washer with a fastening mechanism.

Fig. 8 - design of the force sensor.

Fig. 9 - resonator diagram.

Fig. 10 - block diagram of a temperature sensor reading device.

Fig. 11 is a block diagram of a force sensor reading device.

The figures indicate the following positions:

pos. 1 - device for reading temperature information from temperature sensors;

pos. 2 - contact wire;

pos. 3 - wireless radio frequency passive temperature sensor;

pos. 4 - reinforced concrete support;

pos. 5 - device for reading information about the tension force of the contact wire;

pos. 6 - suspension insulator;

pos. 7 - anchor bracket;

pos. 8 - support cable;

pos. 9 - compensator block;

pos. 10 - compensator block cable;

pos. 11 - force sensor;

pos. 12 - fastening mechanism;

pos. 13 - ultrasonic receiver with antenna;

pos. 14 - ultrasonic emitter with antenna;

pos. 15 - mounting bolts with nuts;

pos. 16 - sensitive element on surface acoustic waves;

pos. 17 - contacts of the sensitive element;

pos. 18 - slot antenna;

pos. 19 - fastening gasket;

pos. 20 - base;

pos. 21 - antenna;

pos. 22 - interdigital converter;

pos. 23 - starting reflective structure;

pos. 24 - intermediate reflective structure;

pos. 25 - final reflective structure;

pos. 26 - piezoelectric substrate of the temperature sensor;

pos. 27 - plate;

pos. 28 - fastening to the cable;

pos. 29 - metal washer made of stainless steel;

- 4 043333 pos. 30 - fastening mechanism for clamping the force-measuring washer;

pos. 31 - force-measuring washer;

pos. 32 - surfactant resonators;

pos. 33 - transceiver antennas;

pos. 34 - piezoelectric resonator plate;

pos. 35 - reflectors;

pos. 36 - electrodes of the interdigital converter;

pos. 37 - interdigital converter;

pos. 38 - antenna;

pos. 39 - washer with collar;

pos. 40 - keyway groove;

pos. 41 - high-frequency cable;

pos. 42 - chirp generator;

pos. 43 - block for separating reception and transmission;

pos. 44 - transceiver antenna;

pos. 45 - mixer;

pos. 46 - filter;

pos. 47 - ADC;

pos. 48 - signal processor;

pos. 49 - interface converter block;

pos. 50 - generator;

pos. 51 - amplifier;

pos. 52 - chirp generator;

pos. 53 - block for separating reception and transmission;

pos. 54 - transceiver antenna;

pos. 55 - mixer;

pos. 56 - filter;

pos. 57 - ADC;

pos. 58 - signal processor;

pos. 59 - interface converter block.

In the context of increasing requirements for the reliability of railway transport operation, the problem of serious damage (breaks) in electric traction networks (ETN) is relevant. Breaks can be caused, among other things, by the formation of ice, falling supports, and a decrease in the quality of current collection. The contact wire condition monitoring system must evaluate the dynamics of the process of changing the condition of the contact wire based on information from contact wire temperature sensors and tension force sensors of cables and contact wires, which makes it possible for the user to predict the achievement of control values for the condition of wires and cables in order to issue appropriate possible commands to accept the necessary measures (preventive heating of the contact wire or melting of deposits).

The claimed solution is used to monitor the temperature and tension of the contact wire.

In fig. 1 and 3 show a diagram of the installation of system components, which makes it possible to implement automatic wireless monitoring of the contact network and predict the condition of the contact wire. A wireless radio frequency passive temperature sensor (3) is attached to the contact wire (2). A device for reading temperature information from a temperature sensor (1) is installed on a reinforced concrete support (4) together with an ultrasonic receiver (13) and an ultrasonic emitter (14). Also mounted on the reinforced concrete support (4) is a device for reading information about the tension force of the contact wire (2) from the passive force sensor (11). Passive force sensors (11), using a fastening mechanism (12), are installed in the gap in the supporting cable (8) between the suspension insulator (6) and the anchor bracket (7), as well as in the gap in the cable (10) of the compensator block (9).

In fig. Figure 5 shows the design of a passive temperature sensor. The sensitive element (16) on surface acoustic waves contains inside a piezoelectric substrate (26), on which an interdigital transducer (22) is located, connected to an antenna (21), as well as sequentially located: a starting reflective structure (23), an intermediate reflective structure structure (24), final reflective structure (25) (Fig. 6). The antenna (21) inside the sensitive element (16) is connected to its output contacts (17), which in turn are connected to the slot antenna (18). The slot antenna (18), sensing element (16), base (20), spacer (19), plate (27) are connected as shown in FIG. 5, using bolts and nuts (15) so that the contact wire (2) is clamped.

In fig. 7-9 show the design of a wireless radio frequency passive force sensor (11), which is a force measuring washer (31) clamped by a fastening mechanism (30). Two stainless steel metal washers (29) are pressed against the force-measuring washer (31), placed in a washer with a collar (39). The fastening mechanism (30) is installed in the cable gap (8), behind

- 5 043333 secured using fasteners (28). In the keyway groove (40) of the force-measuring washer (31) there are two resonators on surface acoustic waves (SAW) (32) with high-frequency cables (41) attached to the transceiver antennas (33). Each resonator (32) is a piezoelectric plate (34), on which an interdigitated transducer (37) with an antenna (38) containing a set of electrodes (36), as well as reflectors (35) are located. The antenna (38), in turn, is connected to the transmit-receive antenna (33) using a high-frequency cable (41).

In fig. 10 shows a block diagram of a device used for reading temperature sensors. The reader contains a transceiver antenna (44) connected to a reception and transmission separation unit (43), which, in turn, is connected to a linear frequency modulated (chirp) signal generator (42). The chirp generator (42) is connected to the mixer (45), the mixer (45) is connected to the filter (46), and the filter is connected to the analog-to-digital converter (ADC) (47), connected to the signal processor (48), connected to the converter block interfaces (49), which has connectors for connecting an external information consumer. The temperature sensor reading device additionally contains an ultrasonic emitter with an antenna (14) connected to a generator (50) that controls the enabling signal from the signal processor (48), and an ultrasonic receiver with an antenna (13) connected to an amplifier (51), the signal from which enters the signal processor and is further transmitted to users (operators) through the interface converter block (49).

In fig. 11 shows a force sensor reading device containing a transceiver antenna (54) connected to a reception and transmission separation unit (53), which in turn is connected to a linear frequency modulated (chirp) signal generator (52). The chirp generator (52) is connected to the mixer (55), the mixer (55) is connected to the filter (56), and the filter is connected to the analog-to-digital converter (ADC) (57), connected to the signal processor (58), connected to the converter block interfaces (59), which has a connector for connecting an external information consumer (operator).

The described system works as follows.

The device for reading temperature information from temperature sensors (1) generates a polling signal transmitted over a radio channel using a transceiver antenna (44), which comes to the polled temperature sensor (3), installed on the contact wire (2). The incoming interrogation signal arrives at the slot antenna (18) and then to the antenna (21) of the interdigital transducer (IDT) (22), which converts the electromagnetic interrogation signal into a surface acoustic wave propagating along the surface of the piezoelectric substrate of the temperature sensor (26), on which the reflective structures (23)-(25) are located. The acoustic wave is partially reflected from each structure (23)-(25) and returns to the IDT (22), where it is converted back into an electromagnetic signal in the form of time-delayed reflected pulses returning to the temperature sensor reader (1) using a transceiver antenna ( 44). A change in the temperature of the contact wire leads to a change in the delay time between the pulses reflected from the structures, which is proportional to the change in the temperature of the contact wire. The received reflected pulses arrive at the transceiver antenna (44). The received signal is supplied to the reception and transmission separation block (43), switched to the reception mode, and then the signal enters the mixer block (45), to which a chirp generator (42) is also connected. Using a mixer block of the received and transmitted signal, a signal is obtained at a resonant frequency, which passes through a filter (46) to an analog-to-digital converter (ADC) (47), where it is digitized and sent to a signal processor (48), which processes the received signal and calculates temperature value. At the same time, in the temperature sensor reading device, a generator (50), controlled by a signal processor (48) and connected to an ultrasonic emitter (14), continuously generates an interrogation ultrasonic signal sent to the compensator suspension unit (9). The reflected signal is sent to an ultrasonic receiver with an antenna (13) and then through an amplifier to a signal processor, in which the distance from the reading device to the compensator block is calculated.

A change in the distance from the ultrasonic emitter to the compensator suspension unit indicates a change in the tension of the cable (10), and therefore a change in the tension of the contact wire (2). The information received from the temperature sensor (3) and about the change in the distance from the ultrasonic emitter to the compensator pendant block also makes it possible to predict a cable break and warn the operator by transmitting information through the interface converter block (49) to all external information consumers (operators).

The device for reading information about the tension force of the contact wire (5) generates a polling signal transmitted over a radio channel using a transceiver antenna (54), which arrives at the polled force sensor (11), which is a force measuring washer (31) containing two resonators (32 ) in the keyway groove (40), each of the resonators is a piezoelectric plate (34), on the surface of which there is an IDT (37) with an antenna (38) containing electrodes (36). The frequency of SAW resonators is determined by the distance between the electrodes

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Claims (1)

(36). When the force-measuring washer is deformed, the resonators change their resonant frequencies, and since there is an integral-differential relationship between frequency and phase, any changes in frequency lead to a change in phase. Therefore, it is advisable to use phase shifts associated with changes in the compression force of the force-measuring washer (31). The interrogation signal from the device for reading information about the tension force of the contact wire arrives through the transceiver antenna (33) connected via a high-frequency cable (41) to the resonators to the antenna (38) of the resonator (32) connected to the IDT (37). Using an IDT, the interrogation signal is converted from electromagnetic to an acoustic surface wave propagating along the piezoelectric plate (34). Encountering an inhomogeneity along its path in the form of electrodes (36), the wave is reflected back into the IDT with the antenna. The resonant frequency is determined by the distance between the IDT electrodes (37). Deformation of the washer (31) leads to deformation of the piezoelectric resonator plate (34) and to a change in the distance between the electrodes of the interdigital transducer (36), which, in turn, changes the resonant frequency. This change is proportional to the deformation forces applied to the washer (31) and is recorded in the force sensor reader (5). The tension of the cable (8) leads to compression of the fastening mechanism (30), which indicates tension. The received reflected pulses arrive at the transceiver antenna (54). The received signal is supplied to the reception and transmission separation block (53), switched to the reception mode, and then the signal enters the mixer block (55), to which a chirp generator (52) is also connected. Using a mixer block of the received and transmitted signal, a signal is obtained at a resonant frequency, which passes through a filter (56) to an analog-to-digital converter (ADC) (57), where it is digitized and sent to a signal processor (58), which processes the received signal and calculates the strength value tension of the contact wire. The obtained values are transmitted through the interface converter block (59) to all external information consumers (operators). The reading device (5) transmits information about the critical values of the cable tension and predicts a cable break (8). A force sensor installed in the tension areas of the compensator block cable (10) and the cable between the anchor bracket (7) and the suspension insulator (6) measures the tension force of the cable. The cable itself is tensioned or loosened by the tension or loosening of the contact cable (2). CLAIM A method for automatically monitoring the contact wire of an electric vehicle, including generating and sending a survey signal, collecting and processing information about the state of the elements of the contact network using devices for reading information about the temperature and tension force of the contact wire from the received survey signal, from force and temperature sensors, characterized in that that the device for reading temperature information generates and sends a polling signal to the interrogated temperature sensor, while the incoming polling signal is sent to the antenna of the interdigitated temperature sensor transducer, which converts the electromagnetic interrogating signal into a surface acoustic wave propagating along the surface of the piezoelectric substrate of the temperature sensor, partially reflected from the starting, intermediate and final reflecting structure and returned to the interdigital converter, where it is converted back into an electromagnetic signal in the form of time-delayed reflected pulses, returning to the device for reading temperature information using a transceiver antenna; a device for reading information about the tension force of the contact wire generates and sends a polling signal to the interrogated force sensor, which is a force-measuring washer, while the incoming polling signal is sent to the transceiver antenna of the interdigitated force transducer, which converts the electromagnetic polling signal into a surface acoustic wave propagating along surface of the piezoelectric plate of the force sensor resonator, passes through the electrodes, the distance between which depends on the deformation of the piezoelectric plate, affecting the resonant frequency, where, encountering inhomogeneity, the acoustic wave returns to the interdigital transducer and is converted back into an electromagnetic signal with a phase shift proportional to the force deformation, returning to the device for reading information about the tension force of the contact wire through the transceiver antenna; moreover, simultaneously with the generation of the interrogation signal, the device for reading temperature information additionally generates an interrogation ultrasonic signal sent by the ultrasonic emitter to the suspended compensator unit, which returns to the ultrasonic receiver; Based on the received data, devices for reading information about the temperature and tension force of the contact wire process the received information and transmit it to the operator. -