SU1319052A1 - Device for counting articles - Google Patents

Abstract

The invention relates to computing and information technology. The purpose of the invention is to increase the functional reliability of the device. The device contains a sensor 1, a key 2, a comparator 3, a delay element 5, a switch. 4, elements 8 and 9, OR-NOT 6, BAN 12, one-vibration 10 and 11, the discriminator 7 pulse duration and the counter 13. The discriminator 7 pulse width on one of the inputs can be implemented on the element 14 delay and the element And 15. In the device, in addition to the counting of products, it is monitored for its operability by faults of type open-circuit and by faults of type short-circuit. 2 Il. S with /) L WITH WITH Figure 1

Description

113

The invention relates to a computing and information technology and is intended for automatic counting of piece goods.

The aim of the invention is to increase functional reliability.

FIG. 1 given a block diagram of the device; in fig. 2 - an example of the implementation of the discriminator pulse duration for one of the inputs.

The device contains sensor 1, key 2, comparator 3, switch 4, delay element 5, element OR NOT 6 discriminator. the pulse duration, the first and second elements And 8 and 9, the first one-shot 10, the second one-shot 11, the element BAN 12 and the counter 13.

The discriminator pulse duration contains a delay element 14 and an element 15.

The output of sensor 1 through the key 2 is connected to the first input of the comparator 3. The output of the comparator 3 is connected to the prohibiting input of the prohibition element 12, the first input of the elements AND 8 and 9 and the element OR-NOT 6 and through the element 5 of the signal delay with the second input of the first element AND 8 and the element OR — NOT 6. The output of the delay element is connected via a switch 4 to the second input of the comparator 3. The output of the BAN 12 is connected to the input of the counter 13. The outputs of the element OR NOT 6 and the first element AND 8 are connected to the inputs of the discriminator 7 pulse duration second exit through which the first one vibrator 10 is connected with the second input of the second element I 9 | with the control input of the key 2 and through the second one vibrator 11 with the information input of the element Z.APRET 1 2 "

The single-oscillator 11 can be implemented in the form of serially connected elements of the delay of the signal, the differentiating element and the driver. Moreover, the signal delay element should ensure that the signal at the output of the second single-vibrator falls into the interval of the signal at the output of comparator 3 when its input of switch 2 is disconnected. This should reliably block the pulse from the output of the second one-oscillator when there is no return of the comparator 3 and return the comparator 3 to its original state.

052g

The discriminator 7 pulse duration can be implemented in the form of the element And 15, the inputs of which are connected to the input and output element

5 14 signal delays. The duration of the signal delay by element 14 must exceed the duration of the signals at the output of the element KPI-HE 6 and I B, arising due to the delay on switching the comparator 3, switch 4.

The device works as follows.

In the initial state, the key 2 is closed, resulting in the noise coming from the sensor 1 from the output of the sensor to the input of the comparator 3. At the output of the switch 4, the comparing setpoint voltage is low. At the high current of the comparator 3, a high level appears, which, through the signal delay element 5, enters the input of the switch 4 after a time and switches the switch 4 to a high setting of the comparator 3. The comparator 3 goes to the zero state on the output ,. At the outputs of the discriminator 7, the pulse duration corresponding to the outputs of the elements ORO NOT 6 and I 8 does not form a signal, since short signals from the outputs of these elements do not pass to the output of the discriminator 7 of the pulse duration. When a device fails to function, a break in information at the output of the comparator appears longer than the time specified by the signal delay element 5, and at the output of the OR-NOT element 6 and even at the output of the discriminator 7 the pulse duration a device failure signal is generated. If the output of the comparator 3 appears unit for a time more

5 set by the signal delay element 5, the element AND 8 is triggered and then a pulse is generated on the second input of the discriminator 7 of the pulse duration, which charges the first one-shot 10, from the output of which the switch 2 turns on, locks. Nuv the input of the comparator 3 to the zero level, ensuring that the comparator is set to the zero state, if it is operational. Moreover, if the output of the comparator 3 is one (which means the closure of the comparator 3 due to its overload at a high potential),

31h

This is triggered by the element And 9, signaling an alarm like a high-level circuit. If, when the connection is broken from sensor I to comparator 3 via key 2, comparator 2 returns to its initial state, then the BAN 12 element is triggered and forms a counting pulse, which is registered by counter 13.

Thus, in the invention, it is monitored for its operability both by open-type failures and short-circuit failures, which allows to increase the functional reliability of the device.

Formula of the invention

A device for counting products containing a sensor, a comparator, the output of which is connected to the input of the delay element, to the first input of the element ILY NOT and to the first input of the first element AND whose output is connected to the first input of the pulse width discriminator, the second input of which is connected to the output of the element

Editor G. Volkova

Compiled by N.Vaganova Tehred I.Popovich

Order 2514/44 Circulation 672 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

90524

OR-NOT, the first output of the discriminator of the pulse duration is the first code of the device, and the counter, from, characterized in that

 In order to increase the functional reliability of the device, a key, a prohibition element, a second And element, one-shot and a switch are entered into it, the sensor output is connected to the first input of the key, the output of which is connected to the first input of the comparator, the output of which is connected to the first input of the second element And and to the prohibition input of the prohibition element, the output f5 of which is connected to the counter input, the output of the delay element is connected to the second inputs of the IPN-NE element, the first And element and through a switch to the second input of the comparator, the second

2Q output of the discriminator of the pulse duration through the second one-shot is connected to the second inputs of the second element And and the key and to the input of the second one-shot, the output of which

25 is connected to the enable input of the prohibition element, the output of the second element AND is the second output of the device.

FIG. 2

Proofreader A. Obruchar

Claims (2)

Claim A product counting device comprising a sensor, a comparator, the output of which is connected to the input of the delay element, to the first input of the OR-NOT element and to the first input of the first AND element, the output of which is connected 25 to the first input of the pulse duration discriminator, the second input of which connected to the output of the element 2 4 OR NOT, the first output of the pulse duration discriminator is the first output of the device, and a counter, characterized in that, in order to increase the functional reliability of the device, a key, a prohibition element, a second AND element, one-shots and a switch are inserted into it, the sensor output is connected to the first input of the key, the output of which is connected to the first input of the comparator, the output of which is connected to the first input of the second Inc element to the inhibit input of the inhibit element, the output of which is connected to the counter input, the output of the delay element under is connected to the second inputs of the OR element, the first AND element and through the switch to the second input of the comparator, the second output of the pulse duration discriminator is connected through the second one-vibrator to the second inputs of the second AND element and the key and to the input of the second one-vibrator, the output of which is connected to the allowing input of the element prohibition, the output of the second element AND is the second output of the device. FIG. 2