SU648953A1 - Parameter monitoring arrangement - Google Patents

Description

- The invention can be used for 1grol processes in information processing,

An iodine device intended for a distant circulating control containing sensors connected through a switch to a measuring unit. And a control unit connected to a switch, a measuring unit and a GG display unit. The disadvantage of the device is its complexity.

The closest in technical essence to the invention is a device containing a control unit, the input of which is connected to the output of the measuring unit, and the first output - to the input of the indicator, to sensors whose outputs are connected to the closing contacts of the first relay G2 | .

However, this device is of low reliability.

The aim of the invention is to increase the reliability of the device.

This is achieved by entering keys into the device, a NOT element, a two-pole threshold element, a second relay and a driver, an input; which is connected to the second output of the control unit, and the output to the first input of the first key, the second input of which is connected to the third output of the control unit and through the NOT element to the first input of the second key, the inputs of the measuring unit are connected to the outputs of the second key, the second input of which is connected with the first output of the first key, the inputs of the third keys and the sensor inputs, the third input of the second key is connected to the second output of the first key, the input of the two-pole threshold element and through the opening contact of the second relay to the short contacts of the first relays, the outputs of the third are connected through the windings of the first relays to the output of a two-pole threshold

element and one pole of the second turnip, the other pole of which is connected to the entrance of the lags.

The drawing is a block diagram of the device,.

The device contains at the command point the measuring unit 1, the control unit 2, the indicator 3, the driver 4 signals, the first 5 and the second 6 keys NOT 7 element, and on the monitored object the first relays 8 with closing contacts 9, the third kpyuchk 10, sensors 11, a dzhupol threshold element 12; and a second relay 13 with a closing contact 14.

The device works as follows.

From block 2 to the input of the imager 4, a signal is generated to form a certain control signal H, the generated signal LG:} in the flow. time t, set by block 2, through key 5 opens only one key 10 on the controlled object, tuned to the ° V signal. Thus, the signal Vj is connected through open {shyuchi 1O 0 element 12 12) to pens 6 1 for time tj Relay 8 and relay 13 work. At the same time, the contact kmauls vj does not pass to the sensor 11 through the contact 9. After the end of the LH pulse action, the contact 14 of the relay 13 returns to the initial state, and the contact 9 is held in the closed STATE for a certain time t due to the stored energy received by the relay 8 during the action and impulse of the control pulse for a time tj, and the parameters rshe with a release delay are chosen such that

tj atwaM

Thus, during the time it; A specific sensor is connected via pins 9 to 14 and to the measuring line. this eliminates some kind of shunting of the measuring line from the burning of elements 1O and 12 n of relay 8 and 13, since the two-threshold threshold element 12 is closed. At the command post during the time D i th $ m with you “of the course of block 9, a signal is sent to the indicator 3 about the number of the sensor under monitoring.

If, after the effects of the pulse V i, the time ij has not occurred

Connecting the sensor to the measuring unit for KaKitM-for reasons (for example, keaspravno relay 8, key switch 10 and Po), then from block 1 a signal is sent that switches a 1in sensor to the input of block 2, in which another signal is generated arriving at the input of the imaging device 4 for generating the next control voltage pulse V i 1. At the same time, from the output of block 2 to input 3, a signal is received that the difference between the f of the 1st circuit of the commutation of the sensor 11 is faulty. This information is recorded in the display unit and is displayed separately.

Element 7 and key b are intended to prevent the impulse V from entering;

ti j. Block

2 allows to selectively exclude monitored sensors from the monitoring process, using this, only the pulses Vj of the remaining sensors are formed. The remaining sensors are not fired, which reduces the total cycle time for monitoring.

The use of the invention in the control of complex systems will increase the reliability of control results.

Claims (2)

1. USSR author's certificate No. 349981, cl. Q-05 B 23 / O2, 1971. 2. USSR author's certificate № 3737ОЗ, cl. I-05 B 23 / O2, 1971.