SU980111A1 - Machine operation monitoring device - Google Patents

Description

one

The invention relates to specialized information devices and can be used in production control and accounting systems or as a stand-alone metering device for machine operation.

A device for controlling the operation of machines using coulometers is known.

The coulometers do not allow direct, immediate monitoring and transfer information to monitoring and accounting systems without the use of special converters, which reduces the functionality of the device.

Most blunt to the proposed technical entity is a device for controlling the operation of machines, containing a sensor, the output of which is jO connected to the inputs of a quantization unit and a threshold element, the output of which is connected to the first input of the AND element, the output of which is connected to the first input of the OR element, through the counter is connected to the input of the actuator and the pulse generator G 21.

Machines, for example electric motors, operate both in stationary modes with different load magnitudes and in transient modes of start-up and self-starting. The number and duration of transient regimes have a significant effect on the amount of machine wear, although its duration is insignificant. To more accurately determine the amount of wear, transient conditions must be considered. In the device, the clock pulse signals are filled with bursts of pulses of other frequencies. The frequency of the clock generator is determined by the required accuracy of the measurement of the progress & For example, to obtain an accuracy of the order of 1O%, the period should be one tenth of the transition time, i.e. the number of pulses applied to the meter is adjusted in accordance with the number of meter actuations in the nominal mode. In this device, it is impossible to perform a specified correspondence when using a high frequency oscillator while using electromechanical counters, the execution of counters with other types of meters leads to a very large counter size .., The device has low accuracy, since in the pauses between the signals of the clock generator pulses are not counted. In addition, there is no information about the current values of the operation modes of the machine per shift, day, etc. The purpose of the invention is to improve accuracy by controlling both stationary and transient modes of operation of the machine. The goal is achieved by the fact that the device for controlling the operation of machines contains a sensor whose output is connected to the inputs of a quantization unit and a threshold element whose output is connected to the first input of the AND element, the output of which is connected to the first input of the OR element, the output of which the counter is connected to the input of the executive element, and a pulse generator, drives the first and second groups of elements I, a group of counters and a frequency divider whose input is connected to the output of the pulse generator, the outputs of the quantizing unit under Linked to the first inputs of elements of the first and second groups, the outputs of the latter are connected to the inputs of counters combined into a group, the first outputs of the frequency divider are connected to the second inputs of the AND elements of the first group, the outputs of which are connected to the second inputs of the OR element, the second output of the frequency divider is connected to the second inputs of elements AND the second group. The drawing shows a block diagram of the device. The device contains a sensor 1, a quantization unit 2, a threshold element 3,. generator 4 pulses, frequency divider 5, elements AND 6 of the first group, elements AND 7 of the second group, element OR 8, counters 9 combined into a group, counter 10, actuator 11 And element AND 12. The device works as follows. The signal from sensor 1 is fed to the input of quantization unit 2, in which it is divided into levels, and a sirnal appears at one of its outputs. In a transient mode, when the value of the input signal significantly exceeds the nominal value, threshold element 3 is triggered. Signals from the generator of 4 pulses are sent to frequency divider 5, consisting, for example, of successively connected counters or triggers with counting inputs. The outputs of the frequency divider 5 are connected to the first inputs of the elements of the first group 6, so that the output connected to the higher frequency is connected to the circuit connected to the output of the quantization unit 2 corresponding to the larger input signal. This is determined by the fact that at high loads the machines move faster. The outputs of block 2 quantization connected to the second inputs of the elements And 6 and 7, the first and second groups. The pulses of the elements And 6 of the first group are fed to the inputs of the element OR 8, and from the outputs of the elements And 7 of the second group to the counters 9, combined into a group. The number of elements And 6 and 7 of the first and second groups, counters 9, combined in a group, is equal to the required number of quantization levels. Depending on the size of the input signal, a signal appears at one of the QJ 3 outputs of quantization unit 2, and at the output of one of the AND elements of the first group there appear pulses with a corresponding frequency. These pulses are transmitted through the element OR 8 to the input of the counter 10. In the initial state corresponding to the origin, this counter is set to zero. The number of pulses arriving at the input of the counter is proportional to the equivalent machine time, referred to the nominal load. When the counter 10 is filled, an actuating element 11 is activated, which issues a signal to the control system of the machine. In the transient mode, when the threshold element 3 is triggered, the pulses per element OR 8 come from the output of the element 12. At the same time, the number of pulses is proportional to the wear during the transient process. To obtain histograms of stationary modes, one of the outputs of the frequency divider 5, depending on the required accuracy, sends a signal to the first inputs of the And 7 elements of the second group, which feed the signals to counters 9, the combined group. Thus, in comparison with the known, the proposed device has

Claims (1)

Formula invented An apparatus for monitoring operation comprising a sensor, the output of which is yen with the inputs of the quantization unit and the Gov element, the output of which is connected to the first input of the AND element, the output 20 of the latter is connected to the first input of the OR element, the output of which is through the account number