Radio station serviceability check device

FIELD: radio communications engineering.

SUBSTANCE: proposed device has information signal source, threshold unit, pulse shaper, AND gate, differentiating unit, radio station transmitter and receiver.

EFFECT: enhanced checkup precision.

1 cl, 2 dwg

 

The invention relates to techniques for radio communication and can be used to control radio communication for mobile objects by a method of testing the functional control in the pauses of information signals when using the radios for immediate appointment.

A device control station containing blocks of switches, RF switches, the coupling element (as the USSR №1401628, CL H 04 B 17/00, 1986).

The disadvantage of this device is the low reliability of control due to the fact that there is no analysis of the parameters characterizing the health and proper functioning for the purpose of the station.

The closest in technical essence to the claimed invention relates to the monitoring device health stations, consisting of control unit, the first and second receiver tone call, time relay, generator control and calling frequencies, as well as containing elements controlled radio station: power transmission, antenna, receiver, transmitter, amplifier, speaker, microphone and acoustic channel. (A.S. USSR №1467771, CL N 04 17/00, 1987). This device is taken as a prototype.

The disadvantage of the above devices is the lack of precision control. That is because there is no analysis p the parameters, characterizing the health and proper functioning for the purpose of radio stations.

The main task, which directed the claimed device is to improve the accuracy of control. To achieve these objectives, the proposed device added: simulator signal, the output of which is connected with the second information input of the first switch unit, connected in series, the first threshold unit, the input connected to the output of the source information signal, the first pulse shaper element “And”, a differentiating unit and the item "NOT", the output of the differentiating unit is connected with the first control inputs of the first and second switch blocks, the first and second high-frequency switches, the second control inputs of which are connected with the output element IS connected in series: a deciding unit, the inlet of which is connected with the second output the second switching unit, a key and an indicator connected in series selector pulses, an input connected with the output element And the second delay element, the output of which is connected with the second input key, series-connected second threshold unit, the input connected to the output of the filter, a second pulse shaper, the output of which is connected with the second input element is a And", the first delay element, the input connected to the output of the pre-amplifier, and the output to the second input of the decision making unit, a frequency Converter, an input connected to the output of the attenuator, and the output from the information input of the second high-frequency switch, the generator of the shift, the output of which is connected to another input of the frequency Converter.

Figure 1 presents the structural electrical diagram of the device, figure 2 is a timing diagram explaining the principle of operation of the device.

Device health monitoring stations consists of series-connected source of the information signal 1, the first threshold unit 2, the first pulse shaper 3, item "And" 4, differential unit 5, the first switching unit 6, the transmitter station, consisting of series-connected pre-amplifier 7, the modulator 8, the power amplifier of the first high-frequency switch 10, the second output of which is connected to the transmitting portion of antenna-feeder devices (AFD) (figure 1 not shown), the coupling element 11, the attenuator 12, the frequency Converter 13, the second high-frequency switch 14, the second information input of which connected to the receiving antenna-feeder device (not shown in figure 1), a radio station, consisting the th of serially connected RF amplifier 15, demodulator 16, a filter 17, the second switching unit 18, a casting unit 19, the key 20, the indicator 21, simulator signal 22, the output of which is connected to a second information output of the second switching unit 6, an information receiver 23, an input connected with the second information output of the second switching unit 18, the element “NOT” 24, an input connected to the output of the differentiating unit 5, and the output from the second control inputs of the blocks 6, 18 and RF switches 10, 14, the first delay element 29, the output of which is connected with the second input key 20, the generator shift 30, the output of which is connected to a second input of the inverter 13, connected in series to the second threshold unit 26, an input connected to the output of the filter 17 and the second imaging unit 27, the output of which is connected with the second input element "And" 4.

The device operates as follows. The device incorporates the principle of testing-functional control stations based on the analysis of the parameters characterizing the performance and correct operation of radio stations on purpose, controlled by the following options radio:

1) the actual sensitivity of the receiver.

2) the distortion introduced by the paths of radio stations.

Transmitted signal (figa) from the output of the source 1 is supplied to the first information input of the first block Perek is uceni 6, to the second input of which receives the signal from the output of the simulator 22 and to the input of the first threshold unit 2 is equal to the minimum possible level of the speech signal. When there is a pause in the transmitted information signal at the output of the threshold unit 2, a signal is generated that triggers the first pulse shaper 3. The pulse duration t from the output of the shaper 3 is equal to the time duration tpin the transmitted speech signal (figb). This pulse is fed to the first input of "element "And" 4. The received radio signal from the output of filter 17 is supplied to the input of the second threshold unit 26. When there is a pause in the received information signal at the output of the second shaper 27 is formed a pulse duration of tpthat is supplied to the second input element And 4, the output of which produces a signal (figd). The output signal from element "And" 4 to the input of the differentiation block 5, the output of which have peaked pulses (figs). The pulses of positive polarity are received at the first inputs of the first and second switching blocks 6, 18 of the first and second high-frequency switches 10, 14, thereby connecting the output of the simulator signal 22 to the input of the RF amplifier 15, the output of the filter 17 to the input of the decision making unit 19. The signal simulator, enhanced pre-amplifier 7, is fed to the input of the mo is ulator 8. High-frequency signal output from the modulator 8, amplified in the amplifier 9 passes through the high frequency switch 10, to the input of the coupling element 11 and then the PA input attenuator 12. The attenuator 12 is designed to set the level of the signal is equal to the real sensitivity of the radio receiver. The output signal from the attenuator 12 is fed to the input of the frequency Converter 13, intended for formation control of a high frequency signal on the receive frequency of the receiver, controlled by a generator of offset of 30 radio stations. The control signal is amplified, converted and demodulated in tracts receiving and flows through the switching unit 18 to the first input of the decision making unit 19, to the second input of which a delay element 25, the delay time is equal to the travel time of the signal paths controlled radio station, receives the reference control signal from pre-amp output.

In the final unit 19 compares the reference and distorted in the paths of the radio signal. If the distortion does not exceed the established norms, the output signal appears "Normal"is displayed by the indicator 21. Otherwise, if there are distortions in the paths of radio stations in excess, at the output of the decision making unit 19 produces a signal "Accident". A pulse signal is output element "And" 4 (figd) to the input of the selector pulses 28. If the pulse duration of the output element And 4 shorter than the duration of tuset the selector 28, at its output, a signal is generated that covers the key 20, prohibiting the display of the Executive estimates "Accident". "Norm indicator 21. Interval equal to the minimum interval of measurement of parameters of radio stations and selected based on the requirements for precision control.

The introduction of the selector pulses 28 will increase the accuracy and reliability of monitoring stations. At the end of the pulse from the output element "And" 4, sharp pulse of negative polarity is fed to the input element "NOT" 24 and further to the second control inputs of the blocks 6 and 18, as well as RF switches 10 and 14, connecting the output of a source of information signals 1 to the input of pre-amplifier 9 to the input of the transmitting antenna-feeder device, the input of the RF amplifier 15 to the receiving antenna-feeder device, the output of the filter 17 to the input of the receiver 23.

Thus, the proposed device will improve the control accuracy through analysis of the parameters characterizing the performance of the radio stations. The use of the proposed device for testing funkcionalnogo control communication SPST decameter radio range will increase the ratio of working on istia 5-7%, due to reduction of 1.2-1.4 times the time spent in a working state.

Device health monitoring stations including the receiver-controlled radio stations, consisting of series-connected amplifiers, radio frequency, demodulator, filter, and a transmitter controlled radio stations, consisting of series-connected pre-amplifier, modulator, power amplifier, containing the source and receiver information signal, connected in series, the first high-frequency switch, the input of which is connected to a power amplifier of the transmitter, the coupling element and the attenuator, the second RF switch, the output of which is connected to the input of the amplifier of the radio receiver controlled radio station, first information input and output of the first switching unit is connected to the output of the information source and the input of the pre-amplifier, respectively, the second the switching unit, the first information input and the output of which is connected to the output of the filter and to the input of the receiver, respectively, characterized in that the added signal simulator, the output of which is connected with the second information input of the first switching unit, connected in series, the first threshold unit, an input connected to the output is the home of the source of the information signal, the first pulse shaper element “And”, a differentiating unit and the item “NOT”, the output of the differentiating unit is connected with the first control inputs of the first and second switch blocks, the first and second RF switches, the second control inputs of which are connected with the output element IS connected in series casting unit, an input connected to the second output of the second switching unit, a key indicator, connected in series selector pulses, an input connected with the output element And the second delay element, the output of which is connected with the second input key, serial connected second threshold unit, an input connected to the output of the filter, a second pulse shaper, the output of which is connected with the second input element And the first delay element, the input connected to the output of the pre-amplifier of a radio transmitter, and the output to the second input of the decision making unit, a frequency Converter, an input connected to the output of the attenuator, and the output from the information input of the second RF switch, the generator of the shift, the output of which is connected to another input of the frequency Converter.



 

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