SU881809A1

SU881809A1 - Device for synchronizing telemechanics system

Info

Publication number: SU881809A1
Application number: SU802863180A
Authority: SU
Inventors: Владислав Яковлевич Овласюк; Александр Алексеевич Каретников; Владимир Алексеевич Каретников; Борис Анатольевич Аксельрод
Priority date: 1980-01-03
Filing date: 1980-01-03
Publication date: 1981-11-15

Description

Изобретение относится к устройствам для синхронизации систем .передачи дискретной информации и может быть использовано в промышленной и транспортной телемеханике.The invention relates to devices for synchronizing discrete information transmission systems and can be used in industrial and transport telemechanics.

Известно устройство для передачи дискретной информации, в котором реализован старт-стопный метод синхронизации , содержащее блок синхронизации, включающий в себя генератор так товых импульсов, регистр сдвига, формирователь запускающего импульса и логические элементы И и ИЛИ DJ.A device for transmitting discrete information is known that implements a start-stop synchronization method comprising a synchronization unit including a clock pulse generator, a shift register, a trigger pulse shaper, and AND and OR logic elements.

Однако данное устройство характеризуется недостаточно высоким уровнем помехоустойчивости системы синхронизации, которая осуществляется одиночными импульсами.However, this device is characterized by an insufficiently high level of noise immunity of the synchronization system, which is carried out by single pulses.

Наиболее близким по технической сущности к предлагаемому является устройство для синхронизации систем телемеханики, содержащее блок задания команд, первый выход которого подключен ко входу генератора синхро2 частоты, а вторые выходы соединены с блокировочными входами соответствующих модуляторов, информационные входы которых подключены к первым выходам генератора ортогональных колеба* ний, выходы модулятора через соответствующие резисторы соединены со входом токового сумматора, с которым через соответствующие резисторы соединены выходы дополнительных модуляторов синхрочастоты, выход генератора синхрочастоты соединен со входом делителя частоты, е первым входом модулятора синхрочастоты и через инвертор с объединенными первыми входами дополнительных модуляторов синхрочастоты, вторые входа дополнительных модуляторов синхрочастоты объединены и подключены к первому выходу первого триггера, второй выход которого соединен со вторым входом второго дополнительного модулятора синхрочастоты и с первым входом элемента И, второй вход которого подключен к первому выходу делителя частоты, а выход ко входу генератора ортогональных колебаний, второй и третий выходы делителя частоты соединены соответственно с первыми входами первого и второго триггеров, первый и второй выходы второго триггера подключены соответственно ко второму входу модулятора синхрочастоты и к третьим входам дополнительных модуляторов синхрочастоты.The closest in technical essence to the proposed one is a device for synchronizing telemechanics systems, containing a command set unit, the first output of which is connected to the input of the frequency synchronizer2, and the second outputs are connected to the blocking inputs of the corresponding modulators, the information inputs of which are connected to the first outputs of the orthogonal oscillator * the outputs of the modulator through the corresponding resistors are connected to the input of the current adder, with which through the corresponding resistors are connected to the outputs of the additional clock modulators, the output of the clock generator is connected to the input of the frequency divider, e the first input of the clock modulator and through an inverter with the combined first inputs of the additional clock modulators, the second inputs of the additional clock modulators are combined and connected to the first output of the first trigger, the second output of which is connected to the second the input of the second additional clock modulator and with the first input of the AND element, the second input of which is connected to the first output at the frequency divider, and the output to the input of the orthogonal oscillation generator, the second and third outputs of the frequency divider are connected respectively to the first inputs of the first and second triggers, the first and second outputs of the second trigger are connected respectively to the second input of the clock modulator and to the third inputs of additional clock modulators.

Формируемая и передаваемая перед сигналом модулированная по фазе синхропосылка обладает высокой помехозащищенностью [2^J.The phase-modulated synchro-packet generated and transmitted before the signal has a high noise immunity [2 ^ J.

Однако данное устройство не обеспечивает контроль синхронизма в конце передачи и, следовательно, достаточно высокий уровень помехоустойчивости устройства.However, this device does not provide synchronism control at the end of transmission and, therefore, a sufficiently high level of noise immunity of the device.

Целью изобретения является повышение помехоустойчивости устройства.The aim of the invention is to increase the noise immunity of the device.

Эта цель достигается тем, что в устройство для синхронизации систем телемеханики, содержащее блок задания команд, первый выход которого соединен со входом генератора синхрочастоты, вторые выходы - с блокировочными входами соответствующих модуляторов , выход генератора синхрочастоты соединен со входом делителя частоты, первым входом первого модулятора синхрочастоты и через инвергтор - с первым входом второго модулятора синхрочастоты, первый и второй выходы делителя частоты соединены с первыми входами соответственно первого и второго триггеров, первый и второй выходы первого триггера соединены со вторыми' входами соответственно первого и второго модуляторов синхрочастоты, первый выход второго триггера соединен с объединенными третьими входами первого, и второго модуляторов синхрочастоты, второй выход второго триггера соединен с первым входом элемента И, второй вход которого соединен с третьим выходом делителя частоты, выход элемента И соединен со входом генератора орто^гональных колебаний,· первые выходы которого соединены с информационными входами соответствующих модуляторов, выходы модуляторов соединены с. соответствующими первыми входами выходного блока, второй и третий входы которого соединены с выходами соответственно первого и второго модуля торов синхрочастоты, введены формирователи импульсов, третий триггер и элемент ИЛИ, второй выход генератора ортогональных колебаний через первый формирователь импульсов соединен с объединенными первыми входами третьего триггера и элемента ИЛИ, выход которого .соединен с объединенными вторыми входами первого и второго триггеров, второй выход делителя частоты соединен со вторым входом третьего триггера, выход которого через второй формирователь импульсов соединен со входом блока задания команд, третий выход которого соединен со вторым входом элемента ИЛИ.This goal is achieved by the fact that in a device for synchronizing telemechanics systems containing a command unit, the first output of which is connected to the input of the clock generator, the second outputs to the blocking inputs of the respective modulators, the output of the clock generator is connected to the input of the frequency divider, the first input of the first clock modulator and through the inverter with the first input of the second clock modulator, the first and second outputs of the frequency divider are connected to the first inputs of the first and second t, respectively of the triggers, the first and second outputs of the first trigger are connected to the second inputs of the first and second clock modulators, respectively, the first output of the second trigger is connected to the combined third inputs of the first and second clock modulators, the second output of the second trigger is connected to the first input of the I element, the second input of which connected to the third output of the frequency divider, the output of the element And connected to the input of the orthogonal oscillator, · the first outputs of which are connected to the information inputs of the corresponding x modulators, the outputs of the modulators are connected to. the corresponding first inputs of the output block, the second and third inputs of which are connected to the outputs of the first and second modules of the sync frequency torus, pulse shapers, the third trigger and the OR element are introduced, the second output of the orthogonal oscillator through the first pulse shaper is connected to the combined first inputs of the third trigger and element OR, whose output is connected to the combined second inputs of the first and second triggers, the second output of the frequency divider is connected to the second input of the third a trigger, the output of which through the second pulse former is connected to the input of the command unit, the third output of which is connected to the second input of the OR element.

На чертеже приведена блок-схема предлагаемого устройства.The drawing shows a block diagram of the proposed device.

Устройство содержит блок 1 задания команд, генератор 2 синхрочастоты, модуляторы 3, делитель 4 частоты, генератор 5 ортогональных колебаний, первый 6 и второй 7 триггеры, элемент И 8. модуляторы синхрочастоты 9 и 10, инвертор 11, выходной блок 12, формирователи 13 и 14 импульсов, элемент ИЛИ 15, третий триггер 16.The device comprises a command unit 1, a clock generator 2, modulators 3, a frequency divider 4, an orthogonal oscillator 5, a first 6 and a second 7 triggers, element 8. A clock modulators 9 and 10, an inverter 11, an output unit 12, formers 13 and 14 pulses, OR element 15, third trigger 16.

Устройство работает следующим образом.The device operates as follows.

При отсутствии передачи команд на первом и вторых выходах блока 1 задания команд присутствует нулевой потенциал. При этом генератор 2 синхрочастоты заторможен, а все модуляторы 3 заблокированы. На третьем выходе блока 1 задания команд положительный потенциал. Триггеры 6, 7 и 16 находястя в· состоянии, при котором на их первом выходе присутствует положительный потенциал, а на втором нулевой. Триггер 6 блокирует оба модулятора синхрочастоты 9 и 10.In the absence of transmission of commands at the first and second outputs of unit 1 of the command is a zero potential. In this case, the clock generator 2 is inhibited, and all modulators 3 are locked. At the third output of block 1 of the job commands a positive potential. Triggers 6, 7, and 16 are in a state in which there is a positive potential at their first output, and zero at the second. Trigger 6 blocks both clock modulators 9 and 10.

При задании команды на соответствующем втором выходе блока 1 задания команд появляется положительный потенциал и модулятор 3, связанный с этим выходом, деблокируется. Одновременно положительный потенциал появляется на первом выходе блока 1 задания команд, а на третьем его выходе кратковременно - нулевой потенциал. При этом запускается генератор 2 синхрочастоты и через элемент ИЛИ 15 переключаются триггеры 6 и 7. Синхроколебания ,с выхода генератора 2 синхрочастот через модулятор 9 и выходной блок 12 поступают на выход устройства. Модулятор 10- блокируется триггером 6.When a command is given, the positive potential appears on the corresponding second output of the command unit 1 and the modulator 3 associated with this output is released. At the same time, a positive potential appears on the first output of command unit 1, and on its third output briefly - zero potential. In this case, the clock generator 2 is started and the triggers 6 and 7 are switched through the OR element 15. Clock, from the output of the generator 2, the clock through the modulator 9 and the output unit 12 are sent to the output of the device. Modulator 10 is blocked by trigger 6.

Далее триггер 6 переключается в исходное состояние. При этом модулятор 9 блокируется, а модулятор 10 деблокируется. Синхроколебания с выхода генератора 2 синхрочастоты пос- 5 тупают на выход устройства через инвертор 11, модулятор 10 и выходной блок 12, т.е. при переключении триггера 7 происходит изменение фазы синхроколебания на 180°, которое улав- ¹⁰ливается на приемной стороне.Next, the trigger 6 is switched to its original state. In this case, the modulator 9 is blocked, and the modulator 10 is released. The clock from the output of the generator 2, the clock frequency 5 is transmitted to the output of the device through the inverter 11, the modulator 10 and the output unit 12, i.e. when the trigger switch 7 is changed sinhrokolebaniya phase by 180 °, which ulav- Lebanon ¹⁰ on the reception side.

В момент перехода делителя 4 частоты ( двоичного счетчика) из последней позиции (все триггеры в единичном состоянии) в нулевую переключает- ¹⁵ся триггер 7. При этом оба модулятора 9 и 10 синхрочастоты блокируются.At the moment of transition of the frequency divider 4 (binary counter) from the last position (all triggers in a single state) to zero, trigger ¹⁵ switches 7. At the same time, both modulators 9 and 10 of the clock frequency are blocked.

Элемент И 8 служит для того, чтобы исключить запись единицы в триггер младшего разряда генератора 5 орто- 20 тональных колебаний. Момент переключения триггера 6 в исходное положение является моментом окончания формирования синхропосылки и начала командной серии. Сигнал, соответству- 25 ющий заданной команде с выхода генератора 5 ортогональных колебаний, через разблокированный при задании команды модулятор 3 и выходной блок 12 поступает на выход устройства. ₃θElement And 8 serves to exclude the recording of a unit in the low-order trigger of the generator of 5 ortho-20 tonal oscillations. The moment of switching trigger 6 to its initial position is the moment of completion of the sync sending and the beginning of the command series. The signal corresponding to a given command from the output of the orthogonal oscillation generator 5, through the modulator 3 unlocked when the command is given, and the output unit 12 is supplied to the output of the device. ₃ θ

При переходе двоичного счетчика генератор’а 5 ортогональных колебаний из последней позиции в нулевую (момент окончания формирования командной серии переключаются через формирователь 14 импульсов Триггер 16 и че- ³⁵рез формирователь 13 импульсов и' элемент ИЛИ 15 триггеры 6 и 7. При этом формируется и передается вторая синх ропосьшка, полностью идентичная первой. В конце второй синхропосьшки импульсом со второго выхода делителя частоты переключатся триггер 7, блокируются модуляторы 9, 10 синхрочастоты и триггер 16. Триггер 16, переключившись, воздействует через формирователь 14 импульсов на блок 1 задания команд, возвращая его в исходное состояние. При этом .на первом и всех вторых выходах блока 1 нулевой потенциал, т.е. все элементы устройства находятся в исходном состоянии.When the binary counter of the generator’s transition 5 orthogonal oscillations from the last position to zero (the moment of the end of the formation of the command series are switched through the pulse shaper 14 Trigger 16 and through ³⁵ pulse shaper 13 and the element OR 15 triggers 6 and 7. In this case, and the second syncron is transmitted, which is completely identical to the first one. At the end of the second syncron, a trigger 7 will switch from the second output of the frequency divider by a trigger 7, the modulators 9, 10 of the sync frequency and trigger 16 will be blocked. Trigger 16, switching It operates through a pulse shaper 14 to a command unit 1, returning it to its initial state, while the potential on the first and all second outputs of block 1 is zero, that is, all elements of the device are in the initial state.

Таким образом, введение третьего триггера, формирователей импульсов и . элемента И позволяет повысить помехоустойчивость предложенного устрой ства по сравнению с известным.Thus, the introduction of the third trigger, pulse shapers and. element And can improve the noise immunity of the proposed device in comparison with the known.

Claims

The invention relates to devices for synchronizing discrete information transmission systems and can be used in industrial and transport telemechanics. A device for transmitting discrete information is known, in which a start-stop synchronization method is implemented, which contains a synchronization unit, which includes a generator of t-by-th pulses, a shift register, a fjanycKaromero pulse generator, and logical elements AND and OR p. However, this device is characterized by an insufficiently high noise immunity of the synchronization system, which is characterized by single pulses. The closest in technical essence to the present invention is a device for synchronization, and remote control systems, containing a command setting unit, the first output of which is connected to the input of the synchronous frequency generator, and the second outputs are connected to the interlocking inputs of the corresponding amplifiers, informational inputs of which connected to the first outputs of the generator of orthogonal oscillations, the outputs of the modulator through the corresponding resistors are connected to the input current cyi o iaTopa, with the Lotor through the corresponding resistors are connected to moves dopol1ttely 1x modulators sinhrochastoty, sinhrochastoty generator output coupled to an input of the frequency divider, the first input of the modulator via an inverter sinhrochastoty and combined with the first inputs dopolnitelyvls modulators sinhrochastoty, the second input of additional modulation sinhrochastoty tori combined and podklyuche1Ya || to the first output of the first trigger, the second output of which is connected to the second input of the second auxiliary modulator of the synchronization frequency and to the first input of the element I, the second input of which is connected to the first output of the frequency divider, and the output to the input of the orthogonal oscillation generator, the second and third outputs of the divider frequencies are connected respectively to the first inputs of the first and second flip-flops, the first and second outputs of the second flip-flop are connected respectively to the second input of the clock frequency modulator and to the third inputs are additional x modulators of synchronous frequencies. A phase-modulated synchro-skip formed and transmitted in front of the signal has a high noise immunity of 2J. However, this device does not provide synchronism control at the end of the transmission and, therefore, a sufficiently high level of noise immunity of the device. The aim of the invention is to improve the noise immunity of the device. This goal is achieved in that the device for synchronizing the telemechanic systems, containing the command setting unit, the first output of which is connected to the input of the sync frequency generator, the second outputs - with the blocking inputs of the corresponding modulators, the output of the synchronous frequency generator is connected the input of the frequency divider, the first input of the first synchronous frequency modulator and, through the inverter, with the first input of the second synchronous frequency modulator, the first and second outputs share the frequencies are connected to the first inputs of the first and second triggers, respectively, the first and second outputs of the first trigger are connected to the second inputs of the first and second synchronous clock, respectively, the first output of the second trigger is connected to the combined third inputs of the second clock, the second output of the second the trigger is connected to the first input of the element And, the second input of which is connected to the third output of the frequency divider, the output of the element And is connected to the input of the oscillator orthogonal oscillation, - the first outputs of which are connected to the information inputs of the corresponding modulators, the outputs of the modulators are connected to the corresponding first inputs of the output block, the second and third inputs of which are connected to the outputs of the first and second synchronous frequency modulators, the pulse generator, the third trigger and the element OR, and the second output generator of orthogonal oscillations through the first pulse shaper connected to the combined first inputs of the third trigger and the OR element, the output of which is connected with the combined second inputs of the first and second triggers, the second output of the frequency divider is connected to the second input of the third trigger, the output of which is connected to the input of the command setting unit, the third output of which is connected to the second input of the OR element through the second pulse generator. The drawing shows a block diagram of the proposed device. The device contains a block; to 1 command assignments, a generator 2 synchronous frequencies, modulators 3, a divider 4 frequencies, a generator 5 orthogonal oscillations, the first 6 and second 7 triggers, element 8 and 8, 10 synchronous modulators, inverter, output unit 12 shapers 13 and 14 pulses, the element ShZH 15, the third trigger 16. The device operates as follows. In the absence of the transfer of commands on the first and second outputs of the block 1 command assignment there is zero potential. At the same time, the generator 2 synchronous frequencies is inhibited, and all modulators 3 are blocked. At the third output of block 1, the teams assign a positive potential. Triggers 6, 7 and in the state in which there is a positive potential at their first output and zero at the second output. Trigger 6 blocks both sync frequency modulators 9 and 10. When a command is set, a positive potential appears on the corresponding second command setting block 1 and the modulator 3 associated with this output is unlocked. At the same time, a positive potential appears at the first output of the command setting unit 1, and at the third output of it, a short potential, for a short time. In this case, the synchronous frequency generator 2 is started and triggers 6 and 7 are switched through the OR element 15. Synchro oscillations. From the output of the synchronous frequency generator 2 through the modulator 9 and the output unit 12 arrive at the output of the device. The modulator 10 is blocked by the trigger 6. 5 Next, the trigger 6 is switched to the initial state. In this case, the module 9 is blocked and the modulator 10 is released. Sync oscillations from the output of the generator 2, the maximum frequencies come to the output of the device through the inverter II, the modulator 10 and the output unit 12, i.e. when switching the trigger 7, the phase of the sync oscillation changes by 180, which is caught at the receiving side. At the moment of transition, the divider 4 frequencies (binary counterj from the last position (all triggers in the unit state) to zero switch from trigger 7. In this case, both the modulator 9 and 10 of the sync frequency are blocked. Element I 8 serves to crush the unit in the trigger low-order generator of orthogonal oscillations. The moment of switching of the trigger 6 to the initial position is the eye moment; 1 minute of the sync piloting and the beginning of the command series. The signal corresponding to a given command from the output of the generator 5 orthogonal of the oscillations, through the unlocked by setting the command, the modulator 3 and the output unit 12 are output to the device.When the binary counter of the generator 5 orthogonal oscillations goes from the last position to zero f, the moment of the end of the formation of the command series is switched through the pulse generator 14 and the pulse generator 16 13 pulses and an element OR 15 triggers 6 and 7. In this case, a second synchro send is generated and transmitted, completely identical to the first one. At the end of the second sync pass, pulse from the second output of the frequency divider switches the trigger 7, the modulators 9, 10 of the synchronization frequency and the trigger 16 are blocked. The trigger 16, having switched, acts through the pulse shaper 14 on the command setting unit 1, returning it to its original state. In this case, the first and all second outputs of block I have a zero potential, i.e. all elements of the device are in the initial state. Thus, the introduction of the third trigger, pulse formers and the AND element makes it possible to increase the noise immunity of the proposed device in comparison with the known one. Apparatus of the Invention A device for synchronization of telemechanic systems, comprising a block for Dani commands, the first output of which is connected to the input of the sync frequency generator, the second outputs with blocking inputs of the corresponding modulators, the output of the synchronous frequency generator is connected to the input of the first synchronous frequency modulator and through the inverter with the first input of the second modulator of the clock frequency, the first and second outputs of the frequency divider are connected to the first inputs of the first and second trig, respectively The first and second outputs of the first flip-flop are connected to the second inputs of the first and second synchronous frequency modulators, the first output of the second flip-flop is connected to the combined third inputs of the first and second sync frequency modulators, the second output of the second And element, the second input of which connected to the third output of the frequency divider, the output of the element And is connected to the input of the generator of orthogonal oscillations, the first outputs of which are connected to the information inputs of the corresponding their modulators, the outputs of the modulators are connected to the corresponding first inputs of the output unit, the second and third inputs of which are connected to the outputs of the first and second synchronous frequency modulators, respectively, in order to improve the noise immunity of the device, pulse shapers are inserted into it, the third trigger and the OR element, the second output of the generator of orthogonal oscillations through the first pulse shaper connected to the combined first inputs of the third trigger and the OR element, the output of which is soy dinene with combined second inputs of the first and second triggers, the second output of the frequency divider is connected to the second input of the third trigger, the output of which through the second pulse generator connects to the input of the command setting unit, the third output of which is connected to the second input of the OR element. Sources of information taken into account in the examination 1. USSR author's certificate number 433524, cl. G 08 C 19/08, 1972.

2. USSR author's certificate №. 464008, cl. G 8 C 19/12, 1974 (prototype).