SU794356A1 - Apparatus for sampling linear dimension minimum value - Google Patents

Description

The device works as follows. Before starting sampling, microprogram block 8 sets all nodes to their initial state. The first received linear dimension value from meter 9 after the next conversion is recorded by the commands of block 5 to counter 7 and through-block 2 rewriting into block 3 of RAM. A prerequisite for recording the first value is the triggering of a limiter of 4 minimum values with a fixed boundary, which ensures the noise immunity of this operation.

Subsequent linear dimension values are analyzed for validity using a minimum value limiter of 7 with a moving boundary. The boundary of the limiter is separated from the current minimum size and the fixed value of the limiting spread over the part, which is determined by the statistical method. At this stage, the minimum value limiter 7 with a movable boundary, made, for example, in the form of a counter, is filled with a fixed number of pulses equal to the limit spread of the linear size and compared with the value recorded in the memory block 4 in previous measurements.

If, in the process of incrementing, block 6 equality fixation is triggered, then the linear dimension value at the command of microprogram block 8 is copied from counter 1 to memory block 3. This means that the received value is reliable and less than the previous one. If the received value is greater than. Fixed in block 8, operative to us, then block 6 of fixing equality of codes

does not work, and the measured value in block 3 of the RAM will not be recorded. The grading comparator 5 is used in the device to provide a signal for parts grading.

F o rmu l invention

Minimum linear size sampling device containing a serially connected counter, rewriting unit, main memory unit connected to the second counter output minimum limiter with fixed boundary and decompression comparator, equality equality fixation unit connected to the output of main memory unit, unit microprograms, connected by outputs to a counter, rewriting unit, random-access memory unit, second input of equality fixation block, and inputs to a limiter. minimum values with a fixed boundary and to the equality block fixation codes, the meter connected to the microprogram block, characterized in that, in order to improve the accuracy and reliability of measurements, it is equipped with a minimum value limiter with a movable boundary connected to the microprogram block input and output to the third input of the block fixing equality of codes.

Sources of information taken into account in the examination:

1. USSR Author's Certificate No. 519596, cl. G 01 B 7/02, 1974.

2. Collector VIMI “Riport, № 6, 1974 (prototype).

Claims (1)

Claim A device for sampling the minimum value of linear size, containing a counter connected in series, a rewriting unit, a RAM block connected to the second output of the counter, a limiter of minimum values with a fixed boundary and a sorting comparator, a code equality fixation block connected to the RAM block output, a microprogram unit, connected by outputs to the counter, rewriting unit, RAM unit, the second input of the code equality fixing unit, and the inputs to the limiter. minimum values with a fixed boundary and to the unit for fixing the equality of codes, a meter connected to the microprogram unit, characterized in that, in order to increase the accuracy and reliability of measurements, it is equipped with a minimum value limiter with a movable boundary connected to the input to the microprogram unit, and the output to the third input of the code equality fixing block.