SU922863A1 - Telemechanical signal transmitting method - Google Patents

Description

The invention relates to the field of telemechanics and can be applied in power systems for the remote signaling of the state of the switching equipment of distribution points.

A known method of forming telemechanical signals, in which the monitored sensors are divided into groups and the order of transmission of information of a group is determined based on the information capacity of the group, and the group address and the state of the sensors of the group are transmitted [11.

The disadvantage of this method is the complexity of the implementation and the low speed of information transfer.

The closest in technical essence to the present invention is a method of transmitting telemechanical signals, which consists in periodically polling groups of sensors and in a sequential sending to the line

2

communication signals of groups of relevant sensors [2],

The disadvantage of this method is the low speed of information transfer.

The purpose of the invention is to increase the speed of information transfer.

This goal is achieved by the fact that when periodically polling groups of sensors and sequentially sending to the communication line a group of sensor signals in the transmission cycle form one main sync pulse and intermediate sync pulses separating the signals of the sensor group,

⁵ during the formation of the sync monitor signals of the respective groups of sensors for the presence of information at the end of each intermediate sinhroimpul ca ²⁰ transmit signals corresponding group of sensors, and in the absence of information transmitted next clock pulse, during which osu3 922863

four

Control the sensor signals of the next group for the presence of information.

The drawing shows a diagram of the device that implements the proposed, 5 th method.

The device contains a control unit 1, a distributor of 2 pulses,

input switch 3, element 4,

shift register 5, input circuits

6 and exit. 7 ·

The device works as follows.

Under the action of the sync pulses of the transmitted signal, coming from 15 control unit 1 to the distributor 2 pulses, closed in a ring, the distributor moves.

Thus in the last step of the distributor 2 from the output of block 1 into controlled Lenia ₂₀ enters a control signal to the primary sync pulse shaping. Input switch 3 is controlled by pulses from the output signals of the distributor 2. The groups of input circuits 25 kontro- liruemyh sensors are supplied via the switch 3 to inputs of an AND element 4 and the shift register 5 · Continuously sync in the presence of operational information in a controlled group of sensors ₃₀ from the output of AND

4, the control unit 1 receives a control signal that puts the control unit 1 in the information transfer mode. At the same time, ₃₅ input signals are recorded in register 5. At the end of the clock pulse, register 5 is switched to the "Shift" mode and a shift operation is performed with the frequency of the informational pulse _<0 when the pulses are frozen. The coding in the information sequence is carried out by extending the duration of the pause following the impulse. The control signal for extending the pause is the voltage taken from the output η of the discharge. register

5 in the information shift mode. ⁵⁰ Thus, in the absence of operational data from the sensors in all groups syyazi line periodically transmitted

t sync, one after the other at intervals of equal length ⁵⁵ telnosti normal pause. When operational information appears in any group of sensors, an information sequence of pulses is formed after the corresponding sync pulse.

The proposed method of transmitting telemechanical signals will allow, in comparison with known technical solutions, to obtain a positive economic effect by increasing the speed of information transmission and the simplicity of the method. When transmitting information on the proposed method does not require the formation of the address of the group of sensors, which is equivalent to reducing t channels in a known method. In addition, under the conditions of operation of switching equipment of power facilities, in most cases, the lack of operational information is typical for normal operation. , while in the known method it is determined on the basis of m + n channels.

Claims (1)

Claim The method of transmitting telemechanical signals, which consists in periodically polling groups of sensors and sequentially sending to the communication line signals of groups of relevant sensors during a transmission cycle, characterized in that, in order to increase the speed of information transfer, in the transmission cycle, one main sync pulse and intermediate sync pulses are formed. signals of groups of sensors, during the formation of sync pulses, monitor the signals of the respective groups of sensors for the presence of information, at the end of each n omezhutochnogo sync transmit signals corresponding group of sensors, and in the absence of intermediate informatsii'peredayut next clock pulse, during which the control signal is performed following group of sensors on the presence information.