SU788402A1

SU788402A1 - Device for connecting radio stations to master station

Info

Publication number: SU788402A1
Application number: SU792709824A
Authority: SU
Inventors: Александр Эйженович Вежис; Вячеслав Илларионович Панасенко; Юрий Иванович Царионов
Original assignee: Рижский Ордена Ленина Государственный Электротехнический Завод Вэф Им. В.И.Ленина
Priority date: 1979-01-09
Filing date: 1979-01-09
Publication date: 1980-12-15

Description

1one

Изобретение относитс к электросв зи и может использоватьс в радиотелефонной св зи с подвижными объектами.The invention relates to telecommunications and can be used in radiotelephone communications with mobile objects.

Известно устройство дл подключени радиостанций к диспетчерскому пункту св зи , содержащее селектор уровн и блок коммутации, соединенный с блоком управлени 1.A device for connecting radio stations to a communication control center is known, which comprises a level selector and a switching unit connected to the control unit 1.

Однако такое устройство имеет невысокую помехоустойчивость.However, such a device has a low noise immunity.

Цель изобретени - повышение помехоустойчивости .The purpose of the invention is to improve noise immunity.

Дл достижени этой цели в устройство дл подключени радиостанций к диспетчерскому пункту .св зи, содержащее селектор уровн и блок коммутации, соединенный с блоком управлени , введены N блоков определени речевого сигнала (где N - количество радиостанций), N цепей, кажда из которых содержит блок определени адреса , блок пам ти и узел блокировки, при этом выходы радиостанций подключены ко входам соответствующих блоков определени речевого сигнала, первые выходы которых подключены ко входам селектора уровн и ко входам блока коммутации, другие выходы которого подключены к управл ющим входам соответствующих радиостанций, второй выход каждого блока определени речевого сигнала подключен к первому входу соответствующего блока определени адреса, второй вход которого соединен с соответствующим выходом селектора уровн , выход блока определени адреса каждой цепи подключен к первому входу блока пам ти, второй вход которого соединен с выходом узла блокировки данной цепи, при этом другой выход блока управлени подключен кTo achieve this goal, N devices for determining the voice signal (where N is the number of radio stations), N circuits, each of which contains a block, are entered into the device for connecting the radio stations to the control room. The communications containing the level selector and the switching unit connected to the control unit are address, block of memory and blocking node, while the outputs of radio stations are connected to the inputs of the corresponding blocks of speech signal determination, the first outputs of which are connected to the inputs of the level selector and to the inputs of the switching unit The other outputs of which are connected to the control inputs of the respective radio stations, the second output of each speech signal determining unit is connected to the first input of the corresponding address determination unit, the second input of which is connected to the corresponding output of the level selector, the output of the address determination unit of each circuit is connected to the first memory input the second input of which is connected to the output of the blocking node of this circuit, while the other output of the control unit is connected to

10 третьим входам блоков пам ти, выход каждого из которых подключен ко входам узлов блокировки других цепей и к соответствующему другому входу блока управлени , при этом блок определени речевого сигнала содержит последовательно соединенные адаптер и ключ, при этом другой вход ключа и вход адаптера объединены и вл ютс входом блока определени речевого сигнала, выход ключа вл етс первым выходом блока определени речевого сигнала, а другой10 to the third inputs of the memory blocks, the output of each of which is connected to the inputs of the interlocking nodes of other circuits and to the corresponding other input of the control unit; the speech signal determining unit contains an adapter and a key connected in series, while the other key input and the adapter input are combined and The input of the speech signal detection unit, the key output is the first output of the speech signal detection unit, and the other

20 выход адаптера вл етс вторым выходом блока определени речевого сигнала.20, the adapter output is the second output of the speech signal detection unit.

Claims

The drawing shows the structural electrical circuit of the proposed device. The device comprises a level selector 1, switching unit 2, control unit 3, speech signal determining units 4, address determining units 5, memory blocks 6, blocking nodes 7, radio stations 8; The speech signal determining unit 4 comprises an adapter 9, a key 10. The device operates as follows. In a call from a mobile object, the call signal is received by several radio stations 8, in the radio visibility zone of which there is a mobile object; then the signals from the output of radio stations 8 are fed to the inputs of blocks 3. In adapters 9, the input signals are analyzed, and in the case of a decision about the presence of speech, control signals are generated to the keys 10 and blocks 5. Speech signals from the outputs of radio stations 8 when activated keys 10 are received in block 2 and on selector 1. Selector 1 selects radio stations 8, the low-frequency output of which contains the largest signal. The signal from the output of the selector 1 enters block 5. When signals from selector 1 and adapter 9 simultaneously appear at the inputs of block 5, an address signal is generated at the output of block 5, which is stored in block 6 for the entire communication time. Simultaneously, from the output of block 6, the signal determining the number of the radio station 8 enters block 3 and the nodes 7 of other channels. At nodes 7, a blocking signal is generated, prohibiting the connection of other radio stations 8 for the duration of the communication. When the address signal arrives, block 3 controls in block 2 the information path to the desired dispatch communication console, through which block 3 sends the address signal of the selected radio station to the console to indicate the call by the illuminated button of the radio station 8. At the same time, the talk path from the selected radio station 8, which provides for listening to the message. When you press the answer button, the response message is transmitted through block 2 to the modulating input of the radio station 8. After the connection is completed and the dispatcher presses the button, the reset from the remote control through block 2 to block 3 transmits a release signal, which block 3 translates into block 6 condition. The device allows, without degrading the sensitivity of the receiver, to increase the reliability of call detection while improving the quality of communication, since the key 10 transmits only the speech signal and closes during speech pauses. The device provides increased noise immunity and reliability of communication due to the formation of a stable communication kaial when connecting the radio station 8 to the switching dispatch communication system, ensures operation with radio stations 8 of any type using various modulation types and having a low-frequency output without changing the sensitivity of the receivers, does not require modification, existing radio stations and that is economically feasible. Claim 1. Device for connecting radio stations to a communication control center, comprising a level selector and a switching unit connected to a control unit, characterized in that, to improve noise immunity, speech signal determination units (where N is the number of radio stations), N are entered circuits, each of which contains an address determining block, a memory block and a blocking node, while the outputs of the radio stations are connected to the inputs of the corresponding speech signal determining blocks, the first outputs of which are connected to the inputs of the level selector and to the inputs of the switching unit, the other outputs of which are connected to the control: inputs of the respective radio stations, the second output of each speech signal determining block is connected to the first input of the corresponding address determining block, the second input of which is connected to the corresponding output of the level selector, output address determination unit. each circuit is connected to the first input of the memory unit, the second input of which is connected to the output of the blocking node of this circuit, while the other output of the control unit is connected to the third inputs of the memory blocks, the output of each of which is connected to the inputs of the blocking nodes of other circuits and to the corresponding another input of the control unit.

2. The device according to claim 1, wherein the speech signal determining unit comprises an adapter and a key connected in series, the other key input and the adapter input are combined and are the input of the voice signal determining unit, the key output is the first output of the speech determining unit signal and the other output of the adapter is the second output of the speech signal detection unit. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 372743, cl. H 04 Q 7/04, 1974 (prototype).