| 摘要 |
FIELD: strain measurement equipment, applicable in balances for measurement of packaged free-flowing materials. ^ SUBSTANCE: the device has a strain gauge whose output is connected to the input of an analog-to-digital converter, main averager and a weight indicator with a signal input. The device has also an averaging buffer, selector switch with control and signal inputs and a signal output, at least one additional averager, OR element, on-line storage, expectation meter, dispersion meter, derivative computer, null detector and a multi-threshold comparator whose number of thresholds equals the number of additional averagers, each threshold of the multi-threshold comparator is made for adjustment of the level of operation, the weight indicator is additionally provided with an authorized input, the output of the analog-to-digital converter is connected to the input of the averaging buffer, whose output is connected to the selector switch signal input installed in the device circuit for connection of the device signal output to the input of one of the averagers, whose outputs are connected to the inputs of the OR element, whose output is connected to the input of the on-line storage, the inputs of the expectation meter and the dispersion meter are combined and connected to the output of the on-line storage, the output of the dispersion meter is connected to the input of the multi-threshold comparator, whose output is connected to the control input of the selector switch, the output of the expectation meter is connected to the input of the derivative computer and the signal input of the weight indicator, the output of the derivative computer is connected to the null detector, whose output is connected to the authorizing input of the weight indicator. ^ EFFECT: provided effective suppression of sinusoidal and asymmetric vibrations and interference within a wide spectrum of frequencies. ^ 1 dwg |
