SU1000774A1 - Vibration parameter checking device - Google Patents

Description

(54) DEVICE TO CONTROL VIBRATION PARAMETERS

The invention relates to a measurement technique and is intended to monitor vibration parameters during vibration processing.

A device is known for monitoring vibration parameters that hold a vibration transducer in series, a matching and a poro block, as well as a time-selection block connected in series, a key and a vibration drive, and the time-selection block input is connected to the output of threshold block L1.

A disadvantage of the known device is the impossibility of detecting undesirable and dangerous changes in the nature of vibration in the event that the value of the vibration parameter does not exceed a selected threshold level (for example, a breakthrough of the bottom of the container), which leads to damage to the vibration equipment.

The purpose of the invention. - expanding the functionality of the device, by providing control of limit modes.

This goal is achieved by the fact that a device for controlling vibration parameters, containing a series-connected vibration transducer, matching and threshold units, as well as sequentially connected; The temporary selection unit, the key and the vibrodrive, are provided with a blocking unit whose output is connected to the key input control and connected to the output of the matching unit by a series of average values,

10 by a voltage divider, a two-threshold comparator, the second input of which is connected to the average value allocation circuit, and the third - to the output of the matching unit, and the OR element, the second input of which. connected to the threshold unit, and the output - with the input of the time settlement unit.

20

The drawing shows a block diagram of a device for monitoring vibration parameters.

A device for monitoring vibration parameters contains a vibration transducer 1 connected in series, mounted on the moving part of machine 2, matching 3 and threshold 4 blocks, as well as in series connected block 5 time

Claims (1)

30 selection, a key 6 and a vibration drive 7. The device is equipped with a blocking block 8 at start-up, the output of which is connected to the control input of the key 6 and connected to the output of the matching unit in series with the separation circuit 9, divider 10 voltage, two-threshold comparator 11 the second input of which is connected to the average value extraction circuit 9, and the third to the output of the matching unit 3 and the element 12 OR whose second input is connected to the threshold unit 4, and the output to the input of the time selection unit 5. The device works as follows. The vibration converter 1 perceives the oscillations of the machine 2 in two directions. In matching block 3, the root-mean-square values of the signals are extracted and their vector summation occurs. From the output of matching block 3, a signal equal to the square of the vector sum of the vibration components arrives at the threshold block 4, and if the threshold is exceeded, a high logic level signal appears at its output. At the output of comparator 11, a high logic level signal is generated both when the signal exceeds the upper threshold and when it decreases below the lower threshold. At the output of element 12 OR, a high level signal appears both when the comparator 11 is triggered and when the threshold block 4 is triggered and enters block 5 of temporary selection, which is harmful to the false alarms of the key 6 under the action of impulse noise and controls the vibration actuator 7 In order to prevent key 6 from tripping when starting the vibrodrive 7, the blocking block 8 is used at start-up. Using the invention allows to expand the functionality of the device and avoids accidents associated with an increased level of vibration. and to a value that prevents their normal processing, and allows you to prevent damage to the vibration equipment and the workpiece, as well as to avoid accidents of the vibrating drive. Apparatus of the Invention A device for monitoring vibration parameters, comprising a series-connected vibration transducer, matching and threshold units, as well as series-connected time selection unit, a key and a vibration drive, characterized in that, in order to extend the functionality by providing control of limit modes, it is equipped with a unit blocking, the output of which is connected to the control input of the key, and connected to the output of the matching unit by series-connected selection circuit a mean value, a voltage divider, a two-threshold comparator, the second input of which is connected to the average value allocation circuit, and the third with the output of the matching unit, and the OR element, the second input of which is connected to the threshold unit, and the output to the input of the time selection block. Sources of information taken into account in examination Handbook ed. V.V. Klyuev. M., Ma. tire industry, 1978, t. 2, p. 77 (prototype).