SU1259309A1 - Device for counting the moving items - Google Patents

Abstract

The invention relates to the field of information and computing technology and can be used for automatic counting of products in automated control systems for the discrete manufacturing process. In this device, in order to improve the accuracy of counting, the additional decoder 7, the shift register B, exec. body element 9, four delay elements 10, 11, 12 and 13, one-oscillator 20, subtractor 18, comparator 19, trigger 14, element 15 and prohibition element 17. The output of prohibition element 17 is connected to the gate input of the decoder 7 and through the third delay element 12 to the input of the record of the shift register 8, the clocking input of which is connected to the second output of the generator 3 pulses. Junior information inputs of the shift register 8 through desh4h ator 7 are connected to the outputs of the first counter 4, the counting input of which is connected to the first prohibitory input of the inhibit element 17. The installation input of the first counter 4 is connected via the one-shot 20 to the first input element And 15 and the first delay element 10 - with the first input of the trigger 14. The second input of the trigger 14 is connected to the output And // i (L SP F 00 o f

Description

the comparator 19 and to the information input of the prohibition element 17. The input of the gating of the comparator 19 is connected via a second delay element 11 e to the first prohibiting input of the prohibition element 17, the second prohibiting input of the prohibition element 17 is connected in three times: a quarter delay element 13 with the second output of the trigger 14. First output trigger 14 is connected to the second

one

The invention relates to information and computing technology and can be used for automatic counting of products in automated control systems of a discrete production process.

The purpose of the invention is to improve the accuracy of the account,

The drawing shows a block diagram of the device.

The device contains a sensor 1, a threshold element 2, a pulse generator 3, the first counter 4, a memory block 5, a digital-to-analog converter 6, a decoder 7, a shift register 8, a performance element 9, delay elements 10-13, trigger 14, elelent I 15, the second counter 16, the element 17 prohibition, the subtractor 18 comparator 19 and odnovybrator 20.

In the initial state, counters 4 and 16, trigger 14, and shift register 8 are reset. When the product appears in front of the sensor 1, a signal is generated at its output, from which the threshold element 2 is triggered and the generator of 3 pulses is triggered. The counting pulses arrive at the leading edge of the pulse from the threshold element 2, cf. The outputs of counter 4 control the addresses of memory block 5, in which the codes obtained by quantizing the information signal from the part to be registered are entered. These codes are placed in block 5 in order of increasing inputs of block 5. The linearly changing counter code is

the input element And 15, the output of which is connected to the input of the second counter 16. The input of the comparator 19 is connected to the output of the subtractor 28, the inputs of which are connected to the outputs of the digital-to-analog converter 6 and the sensor 1, the output of the shift register 8 is connected to the input of the actuating element 9. 1 or .

queue connects the corresponding memory element of block 5 to its output. Thus, at the output of block 5, codes appear successively in time, which at the output of converter 6 are converted into a step signal that coincides with the shape of the signal from the sensor. The error signal does not appear at the output of the subtractor 18 (a differential amplifier can be selected as the subtractor), the comparator 19 does not work. The falling edge of the signal of the threshold element 2, separated by the one-shot 20, passes through the first delay element 10 and the trigger 14 to the input of the element I, and from the last to the counting input of the second counter 16 and will register the displaced

conveyor product

In case the conveyor has the following: a product, the waveform of which is not embedded in the memory block 5,. then the signal is distributed

misalignment by the subtractor 18, which is fed to the input of the comparator 19, the second input of which receives a signal from the generator 3, the Comparator 19 is activated, the signal from it

enters the input of the prohibition element 17, the output of which forms in the interval between two pulses from the generator 3, the signal to the gate input of the decoder 7 and, through the third delay element 12, to the input of the 8 shift register,

The operation of the comparator 19 also leads to the fact that the code in the first counter 4 through the decoder 7 is entered

sets in register 8 shift. The decoder 7 converts the binary code of the counter 4 to the position code of the shift register 8. Thus, in the shift register 8, the unit moved to the moment the product began to appear in the working area of sensor 1. After the trigger 14 has triggered, the passage of the gates of the decoder 7 through the prohibition element 17 is blocked through the fourth delay element 13.

Thus, the fii of the proposed device when the device is opened (this product, the signal from which does not match the codes stored in the memory, in the device precisely indicates this product, which must be removed from the conveyor by the actuating element 9.

Claims (1)

Invention Formula A device for counting moving objects containing a sensor whose output through a threshold element is connected to the installation input of the first counter, the counting input of which is connected to the first output of the pulse generator, the first outputs of the first counter through a memory unit connected to the inputs of a digital-to-analog converter, the output of which is connected to the first input the subtractor, the second input of which is connected to the output of the sensor, and the second counter, which is intended so that, in order to increase the counting accuracy, into it Editor N. Yatsola Order 5125/49 Compiled by N. Vaganova Tehred M. Khodanich Proofreader A. Zimokosov Circulation 671 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 o S 0 five 0 Introduced delay elements, one-shot, element I, prohibition element, shift register, decoder, trigger, comparator and actuator, the output of the threshold element is connected to the input of the one-vibrator, the output of which is connected to the first input of the element AND and the input of the first delay element The output of which is connected to the first trigger input, the first output of the pulse generator is connected to the first input of the inhibit element and through the second delay element to the first input of the comparator, the second input of which is connected to the output of the subtractor, the output the omparator is connected to the second input of the prohibition element, the output of which is connected to the gate input of the decoder and the input of the third delay element whose output is connected to the input of the shift register, the comparator output is connected to the second input of the trigger, the first and second outputs of which are connected respectively to the second input of the And element and the input of the fourth delay element, the output of which is connected to the third input of the prohibition element, the second inputs of the first counter are connected to the information inputs of the decoder, the outputs of which of data inputs connected to shift register clock input of which is connected to the second output of the pulse generator, vrsod AND gate connected to the input of the second counter, shift register output connected to the input of the actuator.