SU1251147A1 - Remote control system - Google Patents

Abstract

The invention relates to remote control and is intended to transmit remote control commands from a remote control center to a large group of monitored points that are required for low power consumption. The invention allows to increase the speed and simplify the telemechanical system. The essence of the invention consists in automatic periodic transmission, if necessary, before the start of telecontrol of such a message, which in a relatively short period allows for a long time to turn on the power at all controlled points where, in the absence of such a message, the main parts of the item are periodically powered for a short time. time limit, and in the automatic subsequent transmission of the remote control command to those controlled points whose addresses are entered at the control point. 3 il. i SO you ate 4

Description

The invention relates to telemechanics and is intended to transmit telecommand commands from a telemechanical control center to a large group of telemechanical controlled points to which low power consumption requirements are imposed.

The aim of the invention is to improve the speed and simplify the telemechanical system.

FIG. 1 shows a structural diagram of the telemechanical system; in fig. 2 - timing diagrams of the telemechanical control center (PU); in fig. 3 - time diagrams of operation of the controlled telemechanical station (KP).

Telemechanical system contains a telemechanical PU

in which

2 pulses generator, timer 3, second 4 and first 5 triggers, first 6, second 7, third 8 and fourth 9 elements AND, counter 10 pulses, element OR 11, group 12 (, ... 12 encoders, switch 13 addresses of controlled points, decoder 14, second encoder 15 (marker coder), first encoder 16 (telecontrol command encoder) transmitter 17, communication channels 18. (... 18, n controlled telemechanical points (KP) 19, each containing pulse generator 20, trigger 21, element OR 22, power source 23, receiver 24, second decoder 25 (marker decoder), first eshifrator 26 (telecommand decoder address and command), the actuator 27.

The pulse generator 2 is designed to form time-separated clock pulses. The separation of the pulses in time allows one to eliminate the phenomenon of "pulse races during the operation of the CP. Timer 3, elements AND 6-8, and element OR 11 are designed to select the code for the KP address address required for transmitting the message in the initial period of the PU operation after the start command. The trigger 4 is designed to transfer the PU from the initial to the working state and back. The trigger 5, the decoder 14 and the element 9 are for determining the end of the operating cycle of the PU, the counter 10 for limiting the number of transmissions of messages with a zero address. The trigger 21 and the element OR 22 are intended to generate a signal for a long-term switching on of the power supply source KP.

Telemechanical system works as follows.

In the initial state, the pulse generator 2 is in the zeroed (off) state. Timer 3 may be in an arbitrary state. The trigger 4 is in the single state, the trigger 5 is in the zero state, the switch 13 is in the initial state, in which its first input is connected to its output. Transmitter 17 is off. The generator 20 is in the on state. The trigger 21 may be in an arbitrary state.

Before starting work, the operator using the keyboard or any automatic device enters into the coder of the telecontrol command 16 the code of the TU command, which must be transmitted to the gearbox (). In gp address coders KP 12 ... 12, the address codes of these m KPs are entered, and in the rest

KP 12o address coders; 12t.ts-12 is the code of the zero address of the control. Encoders can be, for example, groups of memory cells. The total number of KP 12 address coders is due on

, one to exceed the maximum number n KP in the system. KP with a zero address in the system should not be. -

After setting the TU command and the KP addresses, the operator using the button or the automatic device generates a single pulse liycK Ui (Fig. 2), which sets the trigger 4 to the zero state Uj. The zero signal U from the output of trigger 4 turns on the generator of pulses 2, removes zeroing from counter 10 and a commutator

C addresses KP 13. The signal is set to zero and from trigger 5, but it remains in the zero state U}. The pulse generator Z begins to form at its four outputs shifted in time relative to each other sequences of pulses and / 1, Uj, Ug, UT with a repetition period Tj. The first sequence of pulses, and, goes to elements 6 and 7. The second inputs of these elements are And are fed to the inverse Ut and direct Ug outputs of timer 3, respectively. Timer 3 calculates the time interval T since its last zeroing. It is approximately equal to the time interval since the last transmission of the command TU KP with a zero address, differs from it by a small permanent value. If this gap is greater than some predetermined value of T ,, then a single signal Ug is at the direct output of timer 3. If this time interval is shorter, a single signal Uj is at the inverse of the output

5 timer 3. The time interval Tm is equal to the time spent by the CP in a state with permanently switched on power supply of all parts of the CP after the last reception of the marker and is selected based on the conditions of the particular application of the system.

O /

 First consider the cases when, i.e. This means that the power supply of a large part of the control units (receiver, decoders) is carried out periodically, for a relatively short time. Due to the presence of a single signal Ug at the direct output of timer 3, the pulses U, from the output of the pulse generator 2 pass through the element I t. Every impulse of Uio from the output of elements

This AND 7 increases the state of the counter 10 by one. If the number M of pulses of the SU, received at the input of the counter 10, and less than some predetermined number. (M Mlax), then at the output of the counter 10 there is a zero state Un. The number Mmac is determined by the number of transmissions of commands of the TC with a period Tj, which can be transmitted during one full cycle of finding the AC in the state of periodic power-up and power-off. If M, the output of counter 10 is a single state Uu. While the output of the counter 10 has the zero state Uu, the pulses Us from the pulse generator 2 do not pass through the element 8. At its output there is a zero voltage Uiz. Since the output element And 6 also has a zero voltage Utj, the zero voltage UH will also exist at the output of the element OR 11. This voltage does not change the states of trigger 5 and the switches of the KP address 13. To the output of the switch of the KP addresses 13 while the encoder is connected to the zero address KP 12o. From the output of the KP13 address switch, the code of the zero address goes to the transmitter 17 and to the KP decoder 14. If at the input of the decoder 14 there is a code of the KP zero address, then its output is the state Ui5. If at the input of the decoder 14 there is a code of a non-zero KP address, then at its output the zero state Uij- The single signal Ui5 permits the passage of pulses Ug from the output of the pulse generator 2 through the element 9 and the zero state Uj of the trigger 5 prohibits. At the output of the element And 9 there is at the same time a null signal (Fig. 2), not the least condition of trigger 4 and time counter 3.

The pulse Uy from the output of the pulse generator 2 includes the transmitter 17, alternately transmitting the marker code, the zero code of the control address and the command code of the specification received at the transmitter, respectively, from the jviapKepa 15 encoder, the switch of the KP 13 address, the command encoder TU 16. The marker (sync word) is necessary for synchronization of the receiving part of the telemechanical system with its transmitting part. It ensures the fixation of the temporal boundaries of the final sequence of the message. A UJT message (Figs. 2, 3) with a duration from the transmitter output 17 through the communication channel 18 is sent to the controlled telemechanical stations 19, to the input of the receivers 24. The receiver 24 at the time of arrival of the target can be either in the on or off state. The transition from one state to another is carried out as follows. The pulse generator 20 generates periodic pulses and a duration of 2 with a repetition period Tj through the element OR 22 (Fig. 3), including the power source 23, the voltage Uao from which

five

five

0 o 5

stumbles on the receiver 24, the decoder of the marker 25, the decoder of the address and the commands of the TU 26. The power supply from the power source 23 is continuously supplied to the other components of the CP. If a message arrives at receiver 24 while it is in the off state, then there is no change in the control. If a UIT message arrives while the receiver 24 is in the on state, the decoder of the marker 25 detects a marker in the received Uzi message. The pulse Uaa from the output of the decoder of the marker 25 briefly zeroes (returns to the initial state), the pulse generator 20 and sets the trigger 21 to the single state. The unit voltage Uzj from the output of the trigger 21 through the element OR 22 generates a long duplicate signal Ujj to switch on the source 23. Each marker Ujj received by the decoder of the marker 25 again briefly zeroes the pulse generator 20 and sets Uz3 as a trigger 21. Returning to the zero state of the trigger 21 and turning off the power supply 2 3 occurs after a sufficiently long period of time T with a pulse Uzi, from the second output of the pulse generator 20. The duration g of pulses Ujs from the pulse generator 20 to switching on the power supply 23 should be sufficient to receive at least one full message with a duration of 1 for the time of the Tz . This requires the fulfillment of inequalities:

La tj + Ti; Mansman

Transmission of messages with a zero address KP continues until the number M of UIQ pulses received at the input of the counter 10 through the element And 7 reaches the number M „ax (M Mmax). In this case, the output of the counter 10 is set to a single state Uii allowing the passage of pulses Us through the element AND 8 (Uu in Fig. 2) and the element OR 11 to the counting input of the switch of the KP 13 addresses and to the input of the installation to the single state of the trigger 5. This pulse Ur connects to the output of the switch of addresses KP 13 the next coder of the address of KP 12, the output of which already has a non-zero code of the address of KP. The trigger set by pulse Uj / to unit state 5 permits the passage of pulse Ue from generator 2 of pulses through element 9, but to the input of decoder 14 from the output of switch of addresses KP 13 a non-zero code is received, and zero signal Uj5 from output of decoder 14 prohibits the passage of pulses Ue through the element And 9. The zero voltage U at its output does not change the state of the trigger 4 and timer 3.

Pulses Ujr from the output of the generator 2 pulses include a transmitter 17, alternately transmitting a marker code, a non-zero KP address code and a TU command code. The message Uj7 from the output of the transmitter 17 through the communication line 18 goes to the controlled telemechanical point KP 19. Since the voltage Hugo of the power source 23 is fed to the receiver 24, the address decoder and the commands TU 26, the decoder of the marker 25, when receiving the marker the signal Uza c the output of the decoder marker 25 permits the operation of the address decoder and the command of the TU 26. The signal Uai received at the input of the address decoder and the command of TU 26 is decoded at the output of the receiver 24 in the decoder 26, and if the transmitted KP address matches the KP address that received the message, the decoded command and supplied to the actuator 27.

The transmission of w messages with nonzero KP addresses continues until the KP address of the KP 12t + address is connected to the output of the KP 13 address switch (t4-1), in which the code of the KP address does not enter before the start of operation, and in which the code is zero KP addresses. At the output of the encoder 14, a single signal Ui5i appears allowing the passage of the pulse and 6 from the pulse generator 2 through the element 8. 8. The trigger one 5 in a single state, the ultrasonic signal from its output also allows the passage of the pulses through the element 9. The output pulse of the AND 9 momentarily zeroed the time counter 3 and set the trigger 4 to one. The trigger 4 set to one struck the counter 10, the KP 13 address switch, the pulse generator 2 and the trigger 5. After that, the timer 3 start It counts the time Tj, which is the time since the last transmission of the message. The control point returns to its original state.

Let us now consider the case when T2, Tm (. A single signal Uta is at the inverse output of timer 3. I. The pulse LU from the output of pulse generator 2 passes through AND 6, OR 11, and enters the counting input of the KP 13 address switch, connects its output is a KP 12j address encoder. Transmitter 17 starts to transmit a message U with a non-zero address. The absence of transmissions of messages with zero addresses is caused by the fact that when the condition Tg TM is fulfilled, the receiver and decoders at controlled points of the KP are constantly in the on state.eshifratsii in the received message by the receiver 24 and the address command and the address TU deschifratorom komandg TU 26 on the corresponding CP 19 receives the execution command to the actuator 27 of the gearbox.

After the message has been sent to all control stations whose addresses are written in the address coders of the CP 12jL-12p, when the output of the KP addresses appears 13, the KP code of the KP zero address from the KP 12tp1-1 address encoder returns to the initial state.

The technical and economic efficiency of the proposed system in comparison with the known ones consists in reducing the total time of the telecast of the command to control several control points from the moment the input signal is received to the input device of the telemechanics device at the receiving point. All messages in the system have the same format and structure, which simplifies the design of the telemechanical system, especially when there are devices for retransmitting and regenerating the transmitted message. In addition, in this system there is no transmitter on the gearbox and a receiver on the PU.

Claims (1)

The invention of the Tele. Mechanical system containing five five 0 At the control point, the first cipher, switch, descrambler and transmitter, the output of which is connected to the communication channel, and at each controlled point - receiver, power source and connected Q is consistently the first decoder and the actuator, the first input of the receiver is connected to the communication channel, characterized in that, in order to improve speed and simplify the system, an em-pulses, a timer, triggers, a pulse counter are entered into it at the control point And elements, the second encoder and the OR element, a group of encoders, the first output of the pulse generator is connected to the first inputs of the first and second And elements, the outputs of which are connected to the first inputs of the OR element and the pulse counter, respectively, output c etchika i.mpulsov and second pulse generator output are connected to respective inputs of the third AND element whose output is connected 5 with the second input element OR, the output of which is connected to the first inputs of the first trigger and switch, the switch outputs are connected to the inputs of the decoder and to the first inputs of the transmitter, the output of the decoder, the third output of the pulse generator and the output of the first trigger are connected respectively to the first, second and third inputs the fourth element And, the output of which is connected to the first input of the second trigger and to the input of the timer, the first and second outputs of which are connected to the second inputs of the first and second elements, respectively, And, o The second trigger is connected to the second pulse counter inputs. 0 five the switch and the first trigger and with the input of the pulse generator, the fourth output of which is connected to the second input of the transmitter, the outputs of the first and second encoders are connected respectively to the third and fourth inputs of the transmitter, the outputs of the group of encoders are connected to the corresponding third inputs of the switch, the second input of the second trigger is connected to the input "Start-up, at each controlled point a pulse generator, a trigger, an OR element and a second decoder are entered, the receiver output is connected to the first inputs of the first and second decryptors, the output of the power source is connected to the second inputs of the receiver, the first and second decoders, the output of the second decoder is connected to the third input of the first decoder, the first trigger input and the input of the pulse generator, the first and second outputs of the pulse generator are connected respectively to the first input of the OR element and the second input trigger, the output of which is connected to the second input of the OR element, the output of which is connected to the input of the power source. / Management Point FIG. i Fi.Z Sostenitel V. Fedotov Editor K. Vo.yushchuk Tekhred I. VeresKorrektor L. Pilipenko Order 4415/49 Circulation 515 Subscription VNIIPI USSR State Committee for inventions and discoveries I3035, Moscow, Zh-35, Raushsk nab. 4/5 Branch PPP "Patent, Uzhgorod, st. Project, 4