SU1374266A1 - Remote control system slave post apparatus - Google Patents

Abstract

The invention relates to telemechanics systems and can be used in the dispatching of public utility objects. The aim of the invention is to expand the field of application of the device. The use of an address signaling system allows control of several controlled points on a single communication channel. To achieve this goal, switches, a counter, a comparator, a multiplexer, a demultiplexer, a decoder, an analog-to-digital converter, an address setter, command selectors, information signals, a sign of transmitting and calling telemetry, triggers, and OR, I. elements are introduced into the device. Q

Description

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ABOUT)

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The invention relates to telemechanics systems and may find application in the dispatching of public utility objects,

The purpose of the invention is to increase the information content of the device.

Figure 1 shows a diagram of the device; figure 2 - timing charts of the device.

The device diagram (Fig. 1) contains a linear unit 1, a clock selector 2, a selector 3, commands, information signal selector 4, a speakerphone selector 5, a transmission feature selector 6, telemetry signals, a telemetry call selector 7, an electroplating element 8 separation of signals, switch 9, amplifier 10, blocks 11-1 ... 11-loudspeaker communication, audio communication unit 12, relay 13, sensor 14 of television signals, sensors 15 of equipment condition, block 16 of formation of television signals, switch 17 , trigger 18, element OR 19, element AND 20, generator 21, split divider 22, counter 23, element OR 24, elements AND 25 and 26, switch 27, trigger 28, switch 29, command receiver 30, decipher 31, multiplexer 32, demultiplexer 33, element 34, trigger 35 comparator 36 , master of 37 addresses, relays 38 and 39, sensor of 40 telemetry, analog-digital converter 41, switches 42 and 43, trigger 44, element OR 45.

The device controlled item works as follows.

The output signals of block 1 are fed to selectors 2-7. The latter include the discriminators of the duration of the signals from block 1 and the output triggers. A necessary condition for the appearance of

Signal 1 at the output of the selector 2 is the arrival of a signal from block 1 with a duration of at least one transmission cycle (FIG. 2).

As can be seen from FIG. 2, the duration

transmitted from the control point of the synchronizing pulse is one and a half cycles. The difference in the durations of the signals transmitted and fixed by the selector 2 creates sufficient margin to ensure stable operation of the device with possible distortions of the duration of the received signals.

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The selectors 3-7 form a signal 1 at the output, if (under the additional conditions discussed below) the duration of the received signals exceeds 0.3 - 0.4 times the duration of the transmission cycle. The setting of the selectors is made for signals with a duration of 0.7 - 0.8 of the duration of the information signals transmitted from the control point; which, as can be seen from FIG. 2, are equal to 0.5 of the duration of the transmission cycle. The setting of selectors 2–7 for the required signal duration can, for example, be provided with a duration discriminator on a counter that receives signals from the output (not shown) of the clock generator, which is followed by a period of transmission cycles, and is associated with the decoder a certain number of signals from the specified generator output when signal 1 is received from line 1,

When installing, for example, a six to eight-bit counter provides (when using signals from a generator whose frequency is sixteen times the frequency of the transmission cycles) sufficient accuracy (5-10%) of setting the selectors and the possibility of extracting synchronization signals, information and setting the loudspeaker mode connection.

The output signal of the selector 2 adjusts the phase of the output signals of the generator 21 and is set to 1 trigger 28, which generates a signal for de-blocking the distributor 22 and the selectors 3,4,6 and 7.

Thereafter, the distributor 22 becomes sensitive to signals from the clock pulse generator 21 acting on the first distributor input.

The frequency of the generator signals must be equal (within the allowable deviation of the order of 2%). the frequency of the signals of a similar control point generator (not shown),

The first position of the distributor 22 corresponds (Fig. 2a, b) to the receipt of the control command transmitted from the control point (TU), which is fixed by the selector 3, the signal from the selector 3 sets the initial state of the trigger 18 and blocks the operation of the elements 20 and

34, which prohibits the transmission from a controlled point of television signals or telemetry in the cycle of receiving control commands. The second position of the distributor 22 corresponds (FIG. 2b) to the reception of the telemetry call (TI) command transmitted from the control point, which is registered by the selector 7. The telemetry signal is remembered by the trigger 18 until a new control command arrives, i.e. until the next signal is fixed by the selector 3. The third position of the distributor 22 corresponds to the beginning of the reception of the control command.

The signal from the third output of the distributor 22 is set to 1 at the output of the AND 25 and IZH 24 elements. The signal from the OR 24-element is kept at the installed (third) position, i.e. becomes insensitive to signals from oscillator 21. At the same time, counter 23 is received, which receives signals from oscillator 21. Code signals from counter 23 are fed to switch 29, receiver 30, decoder 31, multiplexer 32 and demultiplexer 33. Counter capacity is selected taking into account the maximum number cycles of transmission or reception of information. In this example implementation of the device displayed by the time diagrams (Figures 2a-2d), the maximum number of transmission cycles corresponds to 192 in the mode of transmission of television signals, in connection with which in this device implementation the binary counter 23 is selected as eight-bit. In the mode of receiving control commands,. As can be seen from Figs. 2a and 25, the first eight clock cycles after installing the distributor 22 to the third position correspond to receiving the address of one of the eight controlled points connected to the same communication line using the demultiplexer 33 f 1x the position code of the address of the controlled point is selected.

Signals from outputs 2 ° - 2 of counter 23 are sent to the address inputs of the demultiplexer 33, and signals from the selector 4 are fed to the information inputs, which record the current data coming from the linear unit 1. At the first, the eighth outputs of the demultiplexer 33 (on the first eight clock cycles

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operation of counter 23) signals 1 are generated, if with the corresponding code combination (from zero to seventh) of signals from counter 23 a signal 1 is received from selector 4. One of eight addresses is assigned to the monitored item using address setting 37. Signals from setting 37 and de-multiplexer 33 at times, the bottom is compared by the comparator 36. If the received from the communication line and the address received from the master 37 match, the command is considered to be directed to this controlled item. In this case, the signal from comparator 36 is set to 1 flip-flop 35, allowing input from the selector 4 of the next sixteen bits of the command code (for the given implementation of the device) to the receiver 30. The signal from the counter 23 determines the moment of completion of entering commands and issuing them to the receiver outputs thirty.

Receiver 30 controls three relay groups. The contacts of the first group of relays 38 are used to turn on and off actuators (not shown), such as pumps, elevators, lighting of building entrances, and the like. The contacts of the relay 39 of the second group are used to connect the selected sensor 40 telemetry to the analog-digital converter 41 through the fifth switch 42. The contacts of the relay 13 of the third group are used to switch the unit; 12 audio links of the selected device 11-1 ... 11-П hands-free communication.

The end of the command receiving cycle is determined by the switch 29.

The address inputs of the switch 29 are supplied with signals from the counter 23, and the control inputs are signals determining the set operating mode,

In this mode, signal 1 to switch 29 comes from element 25. 25. Switch 29 can be implemented as a set of decoders, each of which fixes the installation of a code combination of signals at the outputs of counter 23 equal to the number of transmit or receive cycles for each mode, and keys that allow the output of signals from the corresponding decoders. So, in the considered mode of receiving a control command by a signal from an element 25 at the output of the switch 29

a signal must be formed when a code combination is set corresponding to entering twenty-four pulses from generator 21 into counter 23. Signals from switch 29 return to O flip-flops 28 and 35, which leads to return and holding at zero position of distributor 22, transferring to initial state the selection of 3.4, 6 and 7 selectors and the prohibition of entering data into the receiver 30. This completes the mode of receiving control commands and calling telemetry.

TV signals by some other monitored item connected to the same communication line, as well as a cyclic signal — the requirement to transmit TV signals in the absence of a telemetry call.

The signal from the element OR 19 passes to the output of the element AND 20, if in this cycle there is no indication of the receipt of the control command, i, e. there is no signal 1 from the selector 3, thanks to this, the transmission of television signals and the telemeasurement are flexibly adjusted

Consider the operation of the device KOHT-J. TV signals are transmitted in one

a rotated item in the mode of transmission of television signals. Signals from sensors 15 that determine the state of monitored objects, for example, the on or off state of pumps, burglar alarms, access lighting, elevators, and so on, together with the dispatcher's call signals from sensors 14 that are part of devices 11 -1 ,,, 11-p loudspeaker communication, are fed to the block 16 control the formation and transmission of television signals. Block 16 detects a change in the state of the monitored sensors and provides a data ready signal on the second output. Data from block 16 is output by a serial code on the enable signal from switch 43 synchronously with signals from generator 21 received at the other (clocking) input of block 16,

Signal - a request for a sporadic transmission of television signals is formed by the element OR 19 on a sporadic signal - ready for transmission from block 16 or when receiving the indication of transmission of television signals from any other controlled point connected to the same communication line. The indicated attribute is fixed by the selector 6, if when the distributor 22 is installed in the third position, the signal 1 is received from the linear block 1, the signal-to-be signal for cyclical transmission of television signals is formed if trigger 18 does not fix the call to the telemeasurer s.

Thus, at the output of the element OR 19, a sporadic signal is generated. The signal is a requirement to transmit television signals when a change in the state of the sensors is detected by the block 16 or when a transmission sign arrives

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cycle with separation in time from all controlled points connected to the same communication line. To separate the television signals in time, each monitored item is allocated a window in which a signal is formed that allows the data to be output by the block 16, the Window is formed by the switch 43 receiving signals from the decoder 31, the latter in general is a combination of decoders of the beginning and end of the transmission, controlling window triggering drivers. The signal from the output of the decoder passes to the input (resolution of data) unit 16 through the switch 43, if in this cycle the signal 1 is fixed at the output of the element And 20,

In the mode of transmission of television signals, the distributor 22 is blocked and held, in that position, by signal 1 from the AND 26 element, which receives signals 1 from the distributor and from the OR element 45,

The OR 45 element in this mode relays the output of signal 1 from the AND 20 element. As in the mode of receiving commands, when the distributor is locked, the counter 23 is simultaneously released by the signal from the OR element 24, Code signals 2 ,,, 2 ° (for this device implementation example) are perceived by one of the decoders of the switch 29, which determines the end of the transmission cycle of television signals. The signal from the specified decoder passes to the output of the switch 29 when signal 1 comes to its input from AND 20,

As can be seen from FIG. 2b, the transmission of television signals is preceded by the transmission of the TC attribute, which is formed by the switch 27 when the distributor 22 is installed in the third position. Switch 27 includes a key that transmits a signal 1 from the distributor, if the switch 1 receives a signal 1 from element and 20.

The serial code from block 16 and the signal from switch 27 arrive at switch 17, which converts input signals into pulses that coincide in time with the first half of the transmission cycles, i.e. with signals 1 from generator 21, Formed pulses pass to the output of switch 17, if the linear unit 1 does not receive signals from the control point at these times. The blocking of the issuance of signals from the monitored point at the receipt of signals (in particular, the synchronizing signal) from the control point allows to interrupt the started transmission cycle of television signals, if it is necessary to urgently transmit a control command. The signals from the switch 17 through the linear unit 1 are sent to the communication line.

Consider the transmission mode telemetry. The output signal of one of the sensors 40 telemetry parameters through the contacts of the switched on relay 39 of the second group is fed to commutator, p 42, which retransmits the signal from sensor 40 to the input of analog-digital converter 41, if trigger 18 detects reception of a call sign telemetry A parallel, for example, eight-bit, code from converter 41 is converted into serial multiplexer 32. Signals from outputs 2, ..., 2 of counter 23 are sent to address inputs of multiplexer 32, and the signal from the second output of switch 43 from the transmitter of the telemetry transmission window is sent to the enable inputs. As can be seen from Fig. 2b, telemetry is transmitted in one cycle with time separation from all monitored points, with a window for each monitored item, the width of which corresponds to the size of the telemetry code (in the design example under consideration, an eight-digit telemetry code is used) The structure of the part of the switch 43 intended to form a telemetry transmission window is identical to that considered above for a television signal.

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fishing The signal from the second about the output of the switch, which comes to the input of the multiplexer 32, allows the output of the telemetry k-ode. The output code of the multiplexer 32 passes through the switch 17 to the input of the linear unit 1, which generates a signal transmitted to the communication line.

The switch 27, in the same way as described for the mode of transmission of television signals, forms the signal-indication of the telemetry transmission when the distributor 22 is installed in the fourth position, and the switch 29 - the signal of the end of the telemetry transmission cycle.

Consider the mode of transmission and reception of audio signals.

To set this mode, a constant current is transmitted from the control point, with the duration of the current supply exceeding the duration of the clock pulse. The mode setting signal is sensed by the selector 5, the signal from which sets to 1 quarter the trigger 44. The signal from trigger 44 to the linear unit 1 connects an electroplating element 8 containing a separation transformer, through which sound signals are transmitted or received from the communication line. The element 8 is connected via the first communication switch 9 to the input and output of the audio amplifier 10.

The current operation mode of the loudspeaker channel is determined by the presence or absence of direct current in the communication line. If, for example, direct current is transmitted from the control point, this means that sound signals are transmitted from the control point, in the absence of direct current sound signals are transmitted from the control point and are sensed at the control point. If the direct current is received, the signal from the selector 5 through the switch 9 connects the output of the isolation transformer of the element 8 to the input of the amplifier 10, and the output of the amplifier to the loudspeaker of the audio communication unit 12 included in the device 11-1 ... 11-P and connected by the contact of the relay 13 of the third group. As can be seen, the installation of the hands-free mode should be preceded by a control command reception cycle, 6 of which

sets the address of the device 11-1 ,,. 11-п, from which a signal from the sensor 14 received a request for communication. If signal 1 at the output of the selector 5 is missing, switch 9 connects the input of amplifier 10 to the microphone of unit 12 that is connected to the pins the relay 13 of the devices 11-1 ... 11-P and the output of the amplifier 10 to the isolation transformer of the element 8. In this case, the audio signals are sent along the communication line to the control point.

Unit 12 may be replaced by a telephone if necessary.

The established mode of transmission and reception of audio signals is preserved until the next clock pulse from the control point, i.e. the mode is automatically canceled with the start of any cycle of transmitting control commands, television signals, or a telemetry call.

Thus, in the proposed device, as in the known, the possibility of using one communication line for receiving control commands, transmitting television signals and telemetry measurements, as well as for loud-speaking communication, i.e. the conditions are fulfilled for the performance of all functions of monitoring the work of public utility facilities and engineering equipment of residential and office buildings.

SRI.

Claims (1)

Invention Formula The device of the controlled point of the telemechanic system, which contains a linear unit whose input is an input of the device, the first output of the linear unit is connected to the first input of the galvanic separation element, the output of which is connected to the first input of the first switch, the second input and the first output of which are connected respectively to the output and input of the amplifier, the second output of the linear unit is connected to the inputs of the clock selector switch and the speaker selector switch, the output of which is connected to the third input dy first switch command selector output coupled to a first input command receiver, whose output is connected to the first relay, the second output of the first the switch is connected to the first inputs of the loudspeaker units, the outputs of which are connected to the first input of the television signal generation unit, the second input of which is connected to the sensor of the television signals, the second output of the command receiver is connected to the second inputs of the loudspeaker communication units, and the distributor that, in order to increase the information content of the device, a clock pulse generator, a signal converter, second, third, fourth, fifth and sixth switches, first and second demultiplexers, sensor control signals, AND elements, OR elements, triggers, a counter, a decoder, an address sensor, a comparator, an information signal selector, a television signal transmission selector and a telemetry call selector, a clock selector output is connected to the first distributor inputs and the second block input the formation of television signals, with the first input of the second switch and with the first input of the counter, the second output of the linear unit is connected to the first inputs of the selector of information signals, the selector coma d, the selector of the transmission of television signals, the selector of the telemetry call and with the second input of the second switch, the output of the telemetry call selector is connected to the first input of the first trigger, the output of the clock selector is connected to the first input of the second trigger, the output of which is connected to the second input of the distributor and the second inputs of the information signal selector command selector, television transmission selector and telemetry call selector, the first output of the distributor is connected to the third input of the information selector with signal, the second output of the distributor is connected to the second input of the telemetry call selector, the third output, the distributor is connected to the first input of the first element AND, the third input of the selector for transmission of television signals and the first input of the third switch, the second input of which is connected to the fourth output of the distributor, the fifth output of the distributor connected to the first input of the second element And the outputs of the first and the second element AND are connected to the inputs of the first OR element, the output of which is connected to the third input of the distributor and the second input of the counter, the output of the counter is connected to the first input of the fourth switch and the first input of the first demultiplexer, the second input of which is connected to the output of the command selector and the output the second switch, the output of the first demultiplexer is connected to the first input of the comparator, the second input of which is connected to the output of the address setter, the output of the comparator is connected to the first input of the third trigger, the output to that is connected to the second input of the command receiver, the output of the fourth switch is connected to the second inputs of the second and third flip-flops, the output of the counter is connected to the third input of the command receiver, to the first input of the multiplexer, to the second input of the first dec-t multiplexer and through the decoder to the first input of the sixth the switch, the first output of which is connected to the fourth input of the television signal forming unit, the output of the information signal selector is connected to the second input of the first element And the second input of the first trigger and the first inputs of the third and fourth elements AND, the output of the second element OR is connected to the second inputs of the third and fourth elements AND, the output of the first trigger is connected to the first input of the fifth switch and the first input of the second OR element, the second input of which 0 5 o Q five connected to the output of the TV signal generation unit, the output of the TV signal transfer selector is connected to the third input of the second element OR, the output of the third element AND is connected to the third input of the fourth switch, to the third input of the third switch, to the first input of the second demultiplexer and the second input of the sixth switch, output of the fourth element And connected to the third input of the sixth switch, the second input of the second demultiplexer, the fourth input of the third switch and the fourth input of the fourth switch, output the multiplexer is combined with the output of the third switch and connected to the fifth input of the TV signal conditioning unit and the third input of the second switch; the output of the second demultiplexer is connected to the second input of the second And element, the third output of the command receiver is connected to the second through the second relay the input of the fifth switch, the output of which is connected via a signal converter to the second input of the multiplexer, to the third input of which a second output of the sixth com is connected utatora, the output of the first AND element is connected to a fourth input of the fourth switch, a first trigger output connected to a third input of the fourth AND element and a second OR gate, the output clock of the selector is connected to the second input of the fourth flip-flop. b “: §Fe "NW is one h