RU71840U1 - DEVICE FOR MONITORING RADIO STATIONS IN MOBILE OBJECTS - Google Patents

Abstract

The utility model relates to radio engineering and can be used in radio communication systems for remote monitoring of the technical parameters of radio stations, in particular, for operational pre-trip monitoring of the technical condition of locomotive radio stations.

The technical result consists in increasing the reliability of monitoring radio stations in the conditions of high load of radio communication channels, as well as in the territories of the station and depot having zones of lack of radio communication.

A device for monitoring radio stations on moving objects contains a computing unit, a measuring unit, a measuring receiver, a tunable generator that can be made on the basis of a frequency synthesizer and has means for implementing a modulation mode, a unit for controlled attenuators, a memory unit, a unit for measuring loads, an indicator unit and a keyboard , the measuring load unit is connected to the measuring unit and the measuring receiver, the second input of which is connected to the output of the tunable generator, the outputs of the meter unit and the measuring receiver are connected respectively to the first and second inputs of the computing unit, the third input of which is connected to the memory unit, the first output of the computing unit is connected to the control input of the tunable generator, the output of which is connected through the unit of controlled attenuators to the measuring load unit, the second output of the computing unit connected to the indicator, the control input of the block of controlled attenuators is connected to the third output of the computing unit.

Description

The utility model relates to radio engineering and can be used in radio communication systems for remote monitoring of the technical parameters of radio stations, in particular, for operational pre-trip monitoring of the technical condition of locomotive radio stations.

A device is known for monitoring a radio station on moving objects (RU 2142203 C1, H04B 17/00, 27.1199). The device comprises, at a stationary station, a radio transmitting device, a radio receiving device, two controlled attenuators, two control signal conditioners, a delay element, a control signal conditioner, a control unit, a command receiver, a threshold unit, a station number signal receiver, a registration unit, a station number signal generating unit, and at a mobile station — an antenna, a radio receiving device, a radio transmitting device, a control signal receiver, a threshold unit, AND and OR elements, a signal number generator ntsii, shaper start command, the power level meter signal receiver station number, the identification section, the frequency meter. The known device provides a relatively high quality control. However, with a high load of radio channels, the device does not allow to provide the required reliability of monitoring radio stations, especially at large stations and nodes. If there are no radio communication zones in the territories of the station and the depot, then it is impossible to monitor in such conditions.

As a prototype, the STOR-1M device for monitoring locomotive radio stations (RV-1, RV-1M, RV-1.1M) was adopted, which contains a meter-range transceiver and a hectometer-range transceiver, the control inputs of the transceiver parameters are connected to the corresponding outputs of the control unit, to to which a non-volatile memory block is connected, attenuators with control inputs are installed in the signal transmission and reception paths of the transceivers

connected to the corresponding outputs of the control unit. STOR-1M operation modes are set using the control unit. Information on the established STOR-1M operating modes (operating frequency numbers, service information, thresholds of acceptable values for the frequency deviation of the checked radio station, parameters for evaluating the sensitivity of the receiver of the checked radio station) is stored in the memory unit (STOR-1M control device, TU 174.464424.007 -08 TU, 2000). Control is carried out by exchanging interaction signals over the radio channel between STOR-1M and the controlled radio station.

The disadvantages of the known device include the relatively low reliability of monitoring radio stations with a high load of radio channels, especially at large stations and nodes, as well as the impossibility of monitoring on the territory of the station and depot having no radio communication zones. In addition, when conducting pre-trip control at the locations of a small number of mobile objects, high capital costs are required.

The technical result consists in increasing the reliability of monitoring radio stations in the conditions of high load of radio communication channels, as well as in the territories of the station and depot having zones of lack of radio communication.

The technical result is achieved by the fact that in the device for monitoring radio stations on moving objects containing a block of controlled attenuators, a memory block and an indicator, a computing block, a tunable generator, a measuring block, a measuring receiver and a block of measuring loads are introduced, while the measuring load block is connected to the measuring block and a measuring receiver, the second input of which is connected to the output of the tunable generator, the outputs of the measuring unit and the measuring receiver are connected to responsibly to the first and second inputs of the computing unit, the third input of which is connected to the memory unit, the first output of the computing unit is connected to the control input of the tunable generator, the output of which is connected through the controlled attenuators to the measuring load unit, the second output of the computing unit is connected to the indicator, and to third exit

the computing unit is connected to the control input of the unit of controlled attenuators.

The computing unit has an additional output for connecting a computer.

A device with the above set of features allows to obtain high reliability of monitoring radio stations with minimal capital costs for the implementation of such control, and also allows to reduce the labor costs of maintenance, by eliminating the installation and dismantling of radio stations in order to conduct scheduled inspections.

The drawing (Fig. 1) shows a diagram of a device for monitoring radio stations on moving objects.

A device for monitoring radio stations on moving objects contains a computing unit 1, a measuring unit 2, a measuring receiver 3, a tunable generator 4, which can be made on the basis of a frequency synthesizer and has means for implementing the modulation mode, block 5 controlled attenuators, memory block 6, block 7 measuring loads, indicator 8 and keyboard 9, the measuring load unit 7 is connected to the measuring unit 2 and the measuring receiver 3, the second input of which is connected to the output of the tunable generator 4, the output The measuring unit 2 and the measuring receiver 3 are connected respectively to the first and second inputs of the computing unit 1, the third input of which is connected to the memory unit 6, the first output of the computing unit 1 is connected to the control input of the tunable generator 4, the output of which is connected through the block 5 of controlled attenuators to unit 7 measuring loads, the second output of the computing unit 1 is connected to the indicator 8, to the third output of the computing unit 1 is connected to the control input of the unit 5 of the controlled attenuators The keyboard 9 is connected to the computing unit 1 and is designed to enter information. Structurally, the memory unit 6 can be implemented as part of the computing unit 1, and the unit 7 of the measuring loads can be performed as part of the measuring unit 2. Implementation of an additional output in the computing unit allows connecting to a computer device for transmission and further processing of the control results.

A device for monitoring radio stations on moving objects works as follows.

Before starting the monitoring, the controlled radio station 10 is connected to the antenna through the unit 7 of the measuring loads. With this (direct) connection of the radio station to the control device, the influence of negative factors on the reliability of control associated with the loading of radio communication channels or the presence of zones of lack of radio communication is eliminated.

Receiver sensitivity measurement mode.

From the keyboard 9 enter information about the operating frequency of the measured radio station. The computing unit 1 controls the tunable generator 4, which is tuned to the operating frequency. The high-frequency (HF) signal from the output of the tunable generator 4 is fed to the block 5 of controlled attenuators, the output of which the most attenuated signal is fed to the block 7 of the measuring loads, from where it is fed to the input of the measured radio station. The level of the RF signal modulated by the calling frequency of 1000 Hz is displayed on indicator 8. The attenuator attenuation decreases step by step through 1 dB until the tonal call receiver on the measured radio station trips. The level of the RF signal applied to the input of the measured receiver corresponds to its sensitivity level. Its value is stored in block 6 of the memory.

Measurement mode of transmitter output power, SWR antenna and deviation.

The monitored radio station is set to “Transmission” mode with a modulating frequency of 1000 Hz, the RF signal of the transmitter enters the antenna through block 7 of the measurement loads. The measuring unit 2 measures the level of the RF signal and the SWR antenna. The measurement results are received in the computing unit 1, which records them in the memory unit 6. Measuring receiver 7, to the input of which a high-frequency signal attenuated by 50 dB arrives, measures the level of deviation, the result

the measurement enters the computing unit 1, and is recorded in the memory unit 6. All measurement results are displayed on indicator 8.

The mode of automatic testing of the radio station according to the "TEST 3" algorithm. Using the keyboard 9, the personal number of the tested radio station is entered. The computing unit 1 controls the tunable generator 4, which is tuned to the operating frequency of the monitored radio station and switches to modulation mode. The RF signal modulated by the interaction signals from the output of the tunable generator 4 is fed to the block 5 of controlled attenuators set to the minimum attenuation mode. From the output of block 5 of the controlled attenuators, the RF signal goes to block 7 of the measuring loads and then to the input of the radio receiver. The built-in test program of the radio station performs a self-test, after the test is completed, the radio station is switched to the “Transmission” mode and transmits the results of the self-test, which are received by the measuring receiver 3 through the measuring load unit and fed to the computing unit 1, where they are processed. The processed data is recorded in the memory unit 6 and displayed on the indicator 8.

Thus, the proposed device allows using simple means to carry out reliable monitoring of radio stations intended for use on moving objects.

Claims (2)

1. A device for monitoring radio stations on moving objects, containing a block of controlled attenuators, a memory block and an indicator, characterized in that it includes a computing unit, a tunable generator, a measuring unit, a measuring receiver and a unit for measuring loads, while the unit for measuring loads is connected to the measuring unit and the measuring receiver, the second input of which is connected to the output of the tunable generator, the outputs of the measuring unit and the measuring receiver are connected respectively to the first and second inputs of the computing unit, the third input of which is connected to the memory unit, the first output of the computing unit is connected to the control input of the tunable generator, the output of which is connected to the unit of measuring loads through the unit of controlled attenuators, the second output of the computing unit is connected to the indicator, and to the third output the computing unit is connected to the control input of the unit of controlled attenuators. 2. A device for monitoring radio stations on moving objects according to claim 1, characterized in that the computing unit has an additional output for connecting a computer.