SU1243003A1 - Device for counting piece articles - Google Patents

Description

2 - in-counter 5

The invention relates to information and information technology, and in particular, for automatic counting of products when changing the optical conditions of the device.

The goal of the invention is to increase the functional reliability of the device.

Pa drawing shows a structural scheme of the device.

The device contains a sensor. 1, comparators 2 and 3, counters 4 and 5, e.ement I 6, prohibition element 7, digital-analog converter 8, source 9 of the reference voltage, generator 10 pulses.

The input I of the comparators 2 and 3 is informational, the input from the home of the installation, input 1 is the input of the addition, and input 2 is the input of the subtraction.

 The system works as follows.

In the initial state, the second code 5 contains the initial code corresponding to the initial setpoint of comparators 2 n 3. This setpoint can be determined, for example, by recording JEio, the second counter of the 5-maximum code, tiTo causes the comparators 2 and 3 to appear in the zero state, the generator of 10 pulses is turned on and through element 7 of the prohibition on the subtraction of the second counter 5 input, impulses are received, the code is eclipsed — E jie and the caNtbiM setting of the comparator 2. Taic will continue until the output of the digital-analog converter 8 not stnovits voltage less than the voltage but the data input from the sensor 1 to the comparator 2. This would lead to the fact that the pulses from oscillator 10 will flow through the AND gate 6 ua adding the second input of the counter 5.

In one clock of the generator 10 pulses, the output of the digital-to-analog converter 8 will produce a voltage of 1% more, then less than the voltage on the information input from the sensor 1. Moreover, this voltage transition corresponds to the previous ry discharge of counter 5 and the value order of noise in the device. Comparator 3 does not work, because its supports-. new voltage is greater by

the voltage of the source 9 of the reference voltage, than the reference voltage, specified by the digital analogue converter 8.

When a pulse from sensor 1 is generated from detonation, a comparator 3 is triggered and generates a counting signal for counter 4. Simultaneously, the reirepaTOpa 10 pulses are not allowed to operate the comparator 3 at the same time. The set of rooms 2 and 3 set by their digital-to-analogue converter 8, while persists. I.,

When, for example, the sensor illuminates, the first comparator 2 on the feedback circuit will work out this change and the output of the digital-to-analog converter 8 will set a voltage equal to the voltage at the output of the sensor 1 from external conditions j: voltage, corresponding to the smallest digital-analogue educator 8,

I

Frequency generator 10 pulses

is selected in such a way that slow

changes in the output of the sensor, and fast changes in and from it slightly changed the state of the counter 5.

Claims (1)

Invention Formula A device for counting piece goods, containing a sensor connected to the first input of the first comparator, the first counter, the second counter, the outputs of which are connected to the inputs of the digital-to-analog converter, the element I, the prohibition element, the pulse generator, which differs from in order to increase the functional reliability of the device, a second comparator and a voltage source are introduced into it, the sensor output is connected to the first input of the second comparator, the output of which is connected to the inputs of the first counter and the generator pulse The output of which is connected to the first inputs of the prohibition element and the element I, the output of which is connected to the first input of the second counter, the output of the first comparator is connected to the second inputs of the element And the prohibition element, the output of which is connected to 3.12430034 the second input of the second counter; You are a comparator and, through a source of a digital-to-analog converter voltage reference, to the second input is connected to the second input of the first comparator.