SU1256058A1 - Device for counting items transferred by conveyer - Google Patents

Abstract

The invention relates to the automation of production equipment and may find application in various fields of industry. . The device ensures the storage of information on the number of items recorded during a short power outage of the equipment. In the process of loading and unloading, the corresponding sensors 1 and 2 are triggered, the pulses from which through the formers 3 and 4 of the pulses arrive at the reversing counter 6. In the case of simultaneous activation of the sensors 1 and 2, the change in the state of the counter 6 does not occur due to the fact that the element IS NOT 5 gives impulse to prohibit counting. Information from the reversible counter is indicated by indicator 8 and then goes to block 7 of the permanent reprogrammable memory. When the power is turned off, the information is saved in block 7. When the power is restored, the power voltage sensor 10 is triggered, which starts the software-temporary block 9. This block generates control signals to overwrite the information from block 7 to counter 6. 1 slug. S SL to SP o C SL 00

Description

The invention relates to the automation of walk-through furnaces and can be used to account for moving products in various sizes.

The aim of the invention is to increase the reliability of the device during power supply passes in the network and to preserve information about the presence of products in the furnace91, which makes it possible to reduce the number of defective products.

The drawing shows the block diagram of the device.

The device contains load sensor 1, load sensor 2, the first driver 3 IM pulses, the input of which is connected to sensor I, the second driver 4 pulses, the input of which is connected to sensor 2, element 20 AND-HE 5, the inputs of which are connected with the outputs of the formers 3 and 4, the output of which is connected to one of the enable inputs of the reversing counter 6, the inputs of the dates of the sequential 25 counts of the pulses are connected to the formers 3 and 4, block 7 of the permanent memory memory (for example, with the magnetic memory) in- The indicator 1 is connected to the outputs of the revisive counter 6, and the outputs are connected to the inputs for parallel recording of the information of the counter 6, indicator 8, software time block 9, the input of which is connected to voltage sensor 10j, voltage connectors, two outputs the reversible counter 6, and the third output is connected to the enable of the memory 7 of the memory block 7.

The device works as follows 40 times.

When the process line is turned on, all elements of the device are in the initial (zero) position.

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At the time of receipt of the product on

The loading section of the sensor 1 through its driver 3 sends a signal to sum up the input of the reversible counter 6 for registering this product. A reversible counter summarizes all the signals supplied by sensor I. At the time the product arrives at the discharge site, sensor 2, via its driver 4, sends a signal to the subtract input of the reversible counter 6 dd of registration of this product.

The presence of the first signal produced by sensor 2 means that

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0 5 0 j

0

five

0

the product left the furnace and in the future the number of products in the furnace will be equal to the difference between the number of products entered and those left.

The element AND-NOT 5 prohibits the supply of signals to the reversible counter while simultaneously activating the sensors 1 and 2, since in this mode of counting there is no need to work out the simultaneous signals by the reversible counter.

When loading of products is stopped, the reversible counter works only from the sensor 2 of the unloading for subtraction. After the last product leaves the furnace, the counter returns to the initial (zero) state. , At the same time, indicator 8 returns to the zero state.

The signals from the counter, 6 to the indicator 8, are simultaneously received at the inputs of the memory block 7 and are recorded there in the presence of an enable signal from the block 9.

Thus, at any given time, the information, which is formed by a reversible counter, is recorded in a non-destructive memory.

Thus, the mode of operation of the device is maintained until unexpectedly when the supply voltage is disconnected. At that, the code stored in the memory on the triggers will be lost but retained in non-destructive (for example, magnetic memory.) After the power supply voltage is restored, unit 9 generates two briefly existing signals, one of which (o, 5 s) wrapped the reversing counter 6, another (1.5 s) allowed the rewriting of information from the memory block 7 to the reversing counter 6, and the third signal, which appeared after 2 s and allowing the recording of signals to block 7, came 1X from the reversing counter 6 .

Claims (1)

Invention Formula A device for counting objects transported by a conveyor, containing a load sensor, an unloading sensor, an NAND element whose output is connected to the first control input of a reversible counter, whose outputs are connected to the indicator inputs that are increase the functional reliability of the device by insensitivity to disconnecting the supply voltage; pulse shapers, a voltage supply sensor, a program-time block and a fixed reprogrammable memory block, the outputs of the sensor narrow and discharging sensor are connected respectively to the inputs of the first and second pulse shaping, the first outputs are connected to inputs of AND-NO element, and second inputs connected to reverse .informatsionnymi schetRedaktor A.Vorovich Compiled by G. Usachev Tehred M. Khodanych Order 4826/50 Circulation 671 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 The sensor, whose outputs through the block of permanent reprogrammable memory are connected to the installation inputs of the reversible counter, the output of the power supply voltage sensor is connected to the input of the software-time unit, the first and second outputs of which are connected respectively to the second and third control inputs of the reversible counter, the third output the program-time block is connected to the control input of the block of permanent reprogrammable memory. Proofreader L. Latay