SU1601759A1 - Device for selecting fixed radio station for connection to dispatcherъs communication line - Google Patents

Abstract

The invention relates to radio systems with mobile objects. The purpose of the invention is to reduce the selection time of a stationary radio station. The device contains a stationary radio station 1, a switching unit 2, generators 3 and 4 of the signal controlling the connection to the dispatching line of communication, the control signal generator 5, time relays 6, 15, 16, 21, 40 and 43, elements 7, 8, 9, 10, 29, 32, 35, 37, and 39, blocking signal generator 11, blocking signal receiver 12, sawtooth voltage generator 13, comparator 14, call signal receivers 17 and 24, control signal receiver 18, control signal receiver 19, driver 20 impulses, keys 22, 23, 26 and 45, elements OR 25, 30, 33, 42, 44, 46, 47, 49 and 50, memory element 27, receivers 28 control signal ki 28 and 31, inverters 34 and 38, trigger 36, control signal generator 41 and signal receiver 48. When sending a call signal by a mobile radio station, it can be received by several fixed stations. The control station is connected to @ that radio station 1, which has a higher signal intensity at the input in the case of a different signal zone, and in the case of an equal-signal zone, that radio station 1 that is assigned the longest blocking signal duration. 2 Il.

Description

The invention relates to radio communication systems with mobile objects and can be used in simplex train radio systems.

The aim of the invention is to reduce the selection time of a stationary radio station.

FIG. 1 shows a block diagram of the device; Fig. 2 shows voltage plots explaining the operation of the device.

The device contains a stationary radio station 1, switching unit 2, the first 3 and second 4 signal generators of the connection control to the dispatching communication line, the control signal generator 5, the first time relay 6, the first 7, second 8, third 9 and fourth 10 elements AND, - lock signal generator 11, lock signal receiver 12, sawtooth voltage generator 13, comparator 14, second 15 and third 16 time relays, first call signal receiver 17, control signal receiver 18, control signal receiver 19, pulse driver 20, four time relay 21, first 22 and second 23 keys, second call signal receiver 24, first element OR 25, third key 26, memory element 27, first connection control signal receiver 28, fifth element AND 29, second element OR 30, the second receiver 31 of the connection control signal, the sixth element AND 32, the third element OR 33, the first inventory 34, the seventh element AND 35, the trigger 36, the eighth element AND 37, the second inventory 38, the ninth element 39 And, the fifth time relay 40, control signal generator 41, fourth element OR 42, sixth time relay 43, fifth element OR 44, fourth key 45, sixth 46 and seventh 47 OR elements, 48 signal receiver 48, eighth 49 and ninth 50 OR elements.

The device works in the following way.

When making a call from a mobile radio station, a ringing signal can be simultaneously received by several stationary radio stations 1. However, only that stationary radio station 1 out of the number of incoming call stations that has a higher signal intensity at the input in the case of a different signal should be connected to the dispatching communication line the zone or zone to which the duration of the blocking signal is assigned, in the case of an equisignal zone.

When sending out from a signal zone

5 call from a mobile radio station (Fig.2A), the signal from the low-frequency output of the stationary radio station 1 is fed to the signal inputs of the first 17 and second 24 receivers of call signals. Nal.chie two

0 call signal receivers due to the fact that two different dispatchers can be connected to the dispatching communication line, each of which is caused by its assigned call signal. When the SRI of the first call signal receiver 17 is triggered by a signal from its output through the first element OR 25, a sawtooth voltage generator 13 is started (Fig. 2b), the output of which is fed to the first input

0 of the comparator 14. A control signal of a direct current of the stationary radio station 1 proportional to the level of the input signal is fed to its second input. This signal is supplied from the output of the amplifier of the intermediate frequency of the stationary radio station 1, through the third key 26 and the memory element 27 connected in series. When the first call signal receiver 17 is triggered, the third key 26 is closed, but

40, the memory element 27 stores the voltage prior to the call point. This is necessary to eliminate the effect of interference on the process and the possibility of analyzing a single signal with a short call signal. When the output voltage of the generator 13 reaches the sawtooth voltage level at the output of the memory element 27 (Fig. 26), the comparator 14 is activated and starts the second time relay 15. The relationship between the voltage level at the output of the memory element 27 and the duration of the formed time interval until the operation of the comparator 14 is inversely proportional, and a higher voltage level corresponds to a smaller time interval and vice versa. The signal from the output of the comparator 14 starts the second relay 15 time, which fulfills 1 time delay set for this stationary radio station (figv). The signal from the output of the second time relay 15 through the fourth element I 10, to the first input of which the resolving potential is fed in the absence of a control cycle, starts the signal generator 11 5, gi (fig 2g) and blocks the receiver 2 smnna: interlocking from actuation in the ar; and;; the work of the personal re-irator 11 phucca signals. The signal from the output of the second time relay 15 starts the third relay 16 times {fig.2d). On the falling edge of the third time relay 1c, through the seventh elective I 35 and 35, the first input of which is resolved, -: the second potential of the interlock signal in the dispatching communication line, the trigger ig-36 is started (Fig. 2e). Thus, the trigger 36 will occur only in the case, if other stationary radio stations 1 have not received blocking signals before the completion of the ana; i; - GE of this stationary radio station 1 URSEH, valuable signal or at least 6bi during the time interval formed third time relay 16. The signal from the output of Grmgger 36 is missed, the ninth element and the ES at the first input of which is a power supply ;; uidium potential in the absence of a control cycle, starts the fifth relay 40, which turns on the control signal generator 41, the output signal which arrives at the low-frequency input of the station of the longitudinal radio station 1, and p broadcasts (fmg. 2a) are emitted and the mobile radio station is received. sent the call. The signal from the output, C1 of the ninth element AND 39 nocTyotiGT is the first control input of the switching unit 2 and that connects the low-frequency input and output of the fixed radio station: and, and 1 to the dispatcher communication line. Thus, when receiving from X different zones of the input, the input of only one station radio station 1 turns out to be a greater voltage than the input signal of the other, therefore this stationary radio station 1 is connected to the control room. The signal from the output of the ninth element And 39 goes to the first input of the third element And 9, on the second input of which the signal comes from the output. Yes, the first receiver of the call signal, and then through the third element OR 33, the second generator of 4 connection control signals starts, the signal from the output of which is sent to the dispatch communication line (Fig. 2d). The blocking signal generator 11 sends to the control room a blocking signal (Fig. 2d), which is detected by the receivers 12 of the blocking signals of other stationary radio stations 1, which send a call but are not connected to the control room. At each of these stationary radio stations 1, the signal from the output of receiver 12, the blocking signals through the first inverter 34, forms a suppressive potential at the first input of the seventh element 35 and prevents triggering of the trigger 36 and the connection of other stationary radio 5 stations 1 to the dispatch communication line.

A control signal for connection a) sent to the dispatching communication line (Fig. 2d): - 1 is controlled by the control station, which is also connected to the control room.

0 lines of communication. The voice information from the mobile radio station through the fixed radio station 1 and the switching unit 2 enters the dispatching communication line and is monitored by the dispatcher. At the end of the research institute for receiving information from a mobile radio station, the dispatcher sends to the dispatch communication line a transmission control-mode signal (FIG. 2d), which is fixed by the receiver 18 of the control signals, the output from which is received as a control of the stationary radio station 1 and transfers it to the transmission mode, as well as to the second control input of the switching unit 2, which is transferred to the transmission mode of information from the dispatching communication line to the low-frequency input of the fixed radio station 1. Speech information from the dispatch Cher through the connecting unit 2 is supplied to the low frequency

0 stationary radio station input 1. Upon completion of voice data transmission, the dispatcher will pick up: the reception mode control signal (FIG. 2d) barks into the dispatching communications line, which is fixed by the receiver

5 18 control signals, as a result of which the switching unit 2 of the stationary radio station 1 is transferred to the initial transmission mode of information from the low-frequency output of the stationary radio station 1 to the control room. About communication.

At the end of the negotiations, the dispatcher sends to the dispatch communication line a pick-up signal (Fig. 2d), which is recorded by the pick-up receiver 48, the signal from the output of which through the sixth 46 and eighth 49 OR elements reset the device.

When sending from a equal signal call zone from a mobile radio station, the input signals of the stationary radio stations 1 are the same or close in level. To avoid simultaneous connection of several stationary radio stations 1 to the dispatching communication line, the second relay 15 has three different stationary radio stations with different duration of sending the blocking signal. At the end of the signal at the output of the second time relay 15, the lock signal generator 11 is turned on and the lock is released from the lock signal receiver 12. Since the connection of the stationary radio station 1 to the dispatching line of communication occurs when there is an authorization signal at the first input of the seventh element I., only that stationary radio station 1, which received the call, which has the longest sending time of blocking signals, is connected. Thus, when receiving from equi-signal zones, only one stationary radio station 1 is connected to the dispatch line. After the end of negotiations on the dispatch line, a release signal is sent, which is detected by the receiver 48, the output signal of which brings all the device units to their original state. the Bringing all the units of the device to the initial state can also be carried out at the most stationary radio station 1 by manually starting the pulse shaper 20.

If it is necessary to prevent the device from being triggered when receiving a call, the first key 22 closes and the signal from the power supply bus through the seventh element OR 47 connects to the input of the call signal receivers 17 and 24, prohibiting their activation.

To prevent the stationary radio station 1 from being permanently connected to the dispatching communication line when the toll signal does not pass or a malfunction occurs, when trigger 36 is triggered, the first time relay 6 is started, which after a certain time after the last control signal passes through the sixth 46 and eighth 49 elements OR at drives a device

the state of the original state. To avoid limiting the connection time of the stationary radio station 1 to the control room, the fourth key is opened.

45 and the signal circuit is disconnected from the output of the first time relay 6. The fourth time relay 21 is intended to prevent other stationary radio stations 1 from being connected to the control room.

0 upon receipt of a second ring signal before the end of the selection process. For this, the fourth time relay 21 is triggered by a signal from the output of the receiver of the blocking signals and blocks the repeated

5 triggering receivers 17 and 24 signal

call

Remote monitoring of the operation of the device is provided as follows. From the control station 0, the control signal and the connection signal are sent sequentially in time to the control room. The signals from the outputs of the first 28 or second 31 receivers of the connection signals are fed to the inputs of the fourth element OR 42. The signal from the output of the last triggers the sixth time relay 43, which forms the time interval for dividing the connection and control signals. At the end of the time interval, the signal from the output of the sixth time relay 43 through the fifth element IL AND 44 is fed to the second inputs of the fifth 29 and sixth 32 elements I, the first input of one of which 35 is given a signal from the output of the activated receiver 28 or 31 connection signals. The signal from the output of 29 or the sixth 32 elements And through the second 30 or third 33 elements OR starts the first 3 or second 4 generators of the connection control signal, the signal from the output of which is sent to the dispatching communication line (Fig. 2d). The signal from the output of the fourth element OR 42 is fed to the first input of the eighth element I 37, the second input of which receives the signal from the output of the receiver 19 of the control signals. The signal from the output of the eighth element And 37 through the first element OR 25 starts the generator 13 of a sawdust 50 different voltage (Fig 2b), the signal from the output of which is fed to the first output of the comparator 14. A signal from the output of the former 5 of the control signal is fed to its second input through the public key 55 23. Next, the device works in the same way as described, except that the signal from the output of the second relay 15 does not pass through the fourth element 10, the first input of which is the inhibitory potential, and the generator 11 of the blocking signals is not apustits. The signal from the trigger output 36 through the first element AND 7, to the first input of which the resolving potential is applied, is fed to the second input of the fifth element OR 44. The signal from the output of the fourth element OR 42 through the fifth element OR 44 is fed to the second inputs of the fifth 29 and the sixth 32 elements And, the first input of one of which is fed from the output of the activated receiver 28 or 31 connection signals. The signal from the output of an additional 29 or sixth 32 elements And through the second 30 or third 33 elements OR starts the first 3 or second 4 connection control signal generators, the signal from the output of which is re-sent to the dispatcher communication line (Fig. 2d), indicating a health condition devices.

If the device malfunctions, the trigger 36 does not work and the connection control signal will not arrive in the dispatching line.

Claims (1)

The invention The stationary radio station selection device for connecting to a dispatching communication line, comprising a fixed radio station, a low-frequency output of which is connected to a dispatching communication line through a switching unit, and a low-frequency input connected to an output of a switching unit, first, second, third and fourth elements And, the receiver of the blocking signal, whose input is connected to the dispatching communication line, the blocking signal generator, the output of which is connected to the dispatching communication line, and the synchronous input is connected to the control input of the interlock signal receiver and connected to the output of the fourth element AND, the pilot signal generator, the first and second control signal generators are connected to the dispatching communication line and the sequentially connected sawtooth generator, the comparator, the first and second relays time, different from the fact that, in order to reduce the selection time of a stationary radio station, a control signal generator, first and second control signal receivers connected to the dispatching communication line, reception to the control signal, the receiver of the clear signal, the receiver of the control signal, the first and second receivers of the call signal, the first, second, third, fourth, fifth, sixth, seventh, eighth and ninth elements OR, fifth, sixth, seventh, eighth and the ninth elements And, the first and second inverters, the third, fourth, fifth and sixth time relays, the first, second, third and fourth keys, trigger, analog memory element and pulse generator, the output of which is connected to the first inputs of the sixth and eighth elements OR, the input of the control signal receiver, the input of the receiver of the output signal, the inputs of the first and second receivers of the connection control signal to the control line, the input of the receiver the control signal is connected to the dispatch line, the output of the receiver of the signal is connected to the second input of the sixth and second input of the eighth element OR, the third input of the sixth element OR is connected to the output of the fourth the key whose input is connected to the output of the third time relay and the third input of the eighth element OR, the output of which is connected to the control input of the control signal receiver and the input of the ninth element OR whose output is connected to the auxiliary input of the first time relay, the inputs of the first element OR are connected respectively, the first with the output of the first call signal receiver, the second with the output of the second call signal receiver and the third with the output of the eighth element And, the low-frequency output of the stationary radio station is connected to the signal The main inputs of the first and second call signal receivers, the control inputs of which are connected to the output of the fourth time relay, the additional inputs of which are connected to the output of the seventh OR element, the outputs of the first and second connection control signal generators to the control room, are connected to the control line, and their inputs are connected respectively to the output of the second and the output of the third element OR. the output of the control signal receiver is connected to the input of a stationary radio station, the switching unit and the third time relay, the output of the stationary radio station is connected to the input of a third key, the control input of which is connected to the output of the first OR element and the input of the sawtooth generator, the outputs of the second and third keys are combined and connected to the input of the analog memory element, the output of which is connected to the signal input of the comparator, the inputs of the first element I are connected respectively to the trigger output and the output of the eighth About element And, the output of the eighth element And is connected to the control input of the second key and the input of the second inverter, the inputs of the second element And are connected respectively to the output of the second call signal receiver and to the output of the ninth element I. The inputs of the third element And are connected respectively to; the output of the first receiver of the call signal and with the output of the ninth zteteig L, the inputs of the fourth element I are connected respectively to the output of the second time relay and the output of the second inverter, the INPUTS of the first element I are connected respectively to the output of the first receiver of the control signal to the dispatcher -; the Cherk line and the output of the first OR element, the inputs of the sixth element AND {are connected respectively to the output of the second receiver of the control signal of the connection to the control line t to the output of the fifth element OR, the inputs JMoro of the AND element are connected respectively to the output of the first inverter and the output of the third time relay, the first input of the eighth AND element is connected to the output of the receiver {Control signal, and the second to the output of the fourth | OR element and the sixth input (time relay, the inputs of the ninth element AND {are connected respectively to the output of the tri-irepa and to the output of the second inverter, the inputs | of the second element OR are connected respectively to the output of the second and the output of the fifth elements AND, the inputs of the third element; OR are connected respectively to the output of the third and in The sixth element AND,: inputs of the fourth element OR are connected with the OS /) ve; tstags ns: to the output of the first and output EtsrogS) of the control signal of the connection of the dispatch-arsk communication line, h.; one: g: tsgo.,: .. l-RE OR connected sss7ietstyjnns with ı1lodom sixth relay Bp3Me; -ii i and zghodo: pepper And, the first input of the seventh element OR- connected to the output / first key, and the second input connected to element AND, the entrance to the lu. g; the time relay, the input of the Kok -... gutail-i /: i / unit, the control input of the first relay B.;., the third input is connected to the output. signal lock receiver, input l i L; -pEoro inverter, the second inrush / house of that OR block, the input is quadruple and the relay is jpeh- eHfi, the fourth input is connected to aKiAajK i .; LJSO ,. ; ore of the OR element, control unit; .1y zkhodarlm of the first and second receivers to the / /:: connections are connected to the i v --- iA: / i connection; -, descent:.: tr; :: - - ra are connected respectively with the output of the seventh element I and it with the course of the sixth element OR, and the input of the form control of the control C1 / -gnal is connected to the signal the input of the second key, the output of the nth time relay, is connected via a control signal generator to the low-frequency input of a static radio. .... „„, .- i ".J. ™.," : П Г Г °° 1 fT jg Of JV I Ы Ы т -, с.п ..,. 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