SU407359A1 - DEVICE FOR ACCOUNTING OF CEMENT - Google Patents

Description

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The invention relates to production control means and can be used in house building factories, precast concrete plants and other building industry enterprises for automated on-line accounting of cement.

Devices are known for centralized management of construction production, designed to centrally account for finished products by automated collection of data on the production of products by workshops, their issuance from warehouse to installation and for other purposes.

They contain manual dialing consoles, which are used to collect production information, a channel for transmitting this information to the control room, a specialized computing device, and other means.

Devices are known for automatically weighing trains in motion and taking account of cement consumption in a concrete mixing unit. The main disadvantage of these devices is the inability to automatically enter information with the appropriate details into the computing device, moreover, the 75 X 2TVD-4 scale does not allow hopper cars intended for cement transportation to move.

The purpose of the present invention is to increase the reliability of the device and to ensure automatic collection of information on the receipt, availability and consumption of cement, to facilitate the process of operational accounting of cement without the need to perform additional operations for its analysis, to increase the efficiency of monitoring the state of the transport and warehouse processing and

cement dosing in order to reduce the loss level of this scarce building material.

This is achieved due to the specific combination of blocks.

The drawing shows a block diagram of the proposed device.

It consists of a block of time 1, a block of information input 2, a computing block 3, track sensors 4, a command generator 5,

moving code converter 6, filter 7, receiving blocks 8, first adder 9, switch 10, analog-digital converter II, first and second shift registers 12 and 13, second adder 14, control unit 15, consumption metering unit 16 and counter 17 .

The device operates in three main relaims: in the mode of measurement and recording of information on the flow of cement into the railroad warehouse (mode A); in measurement mode

and registration of information about the presence of cement in the warehouse and its consumption in the concrete mixing unit (mode B) and in the mode of operational accounting of cement.

In mode A, the device is automatically transferred when the train moves along the access roads. When the train passes for transporting cement along the path on which the displacement-code 6 transducer is installed, sensors 4 are triggered. The signals in a certain sequence depending on the position of the wheel axles of the locomotive and carriages, from the output of the sensors 4 are fed to the input of the command generator 5. In this block, the following command is formed: ai command applied to the control unit 15 in order to prohibit mode B: the scc command odavaema switch 10 on the purpose of the filter 7 coupled to the input of analog-to-digital converter 11, while it is supplied with the calculation eliminate locomotive weight conversion into digital code independently of its position (rear or front composition); command of the power supply system, applied to the control unit 15 during the movement of the composition to the cement warehouse in order to form the sign "+; the command "4 supplied to the control unit 15 while the composition is moving from the cement warehouse to form a mark, the command as is supplied to the shift registers 12 and 13 after the automatic loading of each carriage car to read the number; A special command is sent to the control unit after weighing the composition in order to enable mode B.

When a carriage carriage hits a transducer-code b converter, the voltage proportional to the weight of the carriage is removed from its output and is fed to filter 7, where the dynamic component resulting from the movement of the train is smoothed. When the command "A" arrives at the switch 10, the filter 7 is connected to the analog-to-digital converter 11, the latter converts the applied voltage into a parallel binary code, which is entered into the main cells of the first shift register 12.

When the as command is sent to the first shift register 12, the number in the serial binary code is fed to the first input of the first adder 9, and the number from the shift register 13 is sent to its second input by the same command. The first adder 9 performs the addition of the numbers supplied to its inputs and the result in the serial binary code is written to the second shift register 13.

This procedure is repeated in a similar sequence when driving each carriage on the converter code 6.

As a result, when the last carriage of the weighed vehicle passes through, a number proportional to the total weight of the train will be accumulated in the first shift register 13.

When ai comes to the control unit 15, it excludes the possibility of the device operating in mode B.

With the arrival of a command in the same block, a command or 4 is formed in it a number of cement and signs "+ (which corresponds to the flow of cement when the compound moves to the warehouse) or" - (which corresponds to the exclusion of tare weight when the compound moves from the warehouse).

After the composition is weighed, the command "e from the command setter 5" is sent to the control unit 15.

In the information input unit 2, pulses are emitted via the cyclic polling scheme, which are transmitted via the forward channel to the control unit 15 (and in parallel to the manual information dialing panels 18 installed in other workshops). If the ab command coincides with the polling pulse of the input unit

information 2, the control unit 15 generates a readiness indicator signal to the reverse channel information input unit; then in serial binary code from the code generation scheme and the sign of the control unit 15 along

The cement channel and the symbol "+ or" - are given to the same channel (depending on the direction of movement of the composition). After issuing the cipher and character, the control unit 15 issues a series of clock pulses to interrogate the second shift register 13, as a result of which the number from the output of the second shift register in the serial binary code on the reverse channel is fed to the input of the information input unit 2. Received on the reverse channel in the block

information input 2 information is stored in the computing unit 3. Thus, in mode A, two messages are automatically generated and stored in the memory of the computing unit 3: about the weight of the loaded train and about the weight of the empty train.

A command received from the control unit 15 by the ssb command from the command generator 5 allows the device to be switched to mode B.

In mode B, the control unit 15 is controlled by time commands coming from time block 1. When the first command from the polling pulse time block from the information input block 2 arriving at the control block 15 matches, the last command sends the signal to the information input block 2 on the reverse channel readiness indicator, and then in the serial binary code from the control unit 15, the cement cipher and the "-" sign are issued on the same channel. Simultaneously with the block

control 15 to the switch 10 receives a signal that connects the output of the block of the second adder 14 to the input of the analog-digital converter 11. As a result, the output of the receiving blocks 8

the voltages proportional to the weight of each of the silos with cement are removed, summed in the block of the second adder 14, and the resulting signal is fed to the input of the analog-digital converter I. The last

converts it into a binary code, which is stored in the main cells of the second shift register.

By the time the cement cipher is issued and the sign "- by the control unit 15 to the information input unit 2 from the control unit, a series of clock pulses is output from the output of the first shift register 12 to the interrogation of the shift register 12, the output of which is proportional to the weight of the cement in silos sequential binary the code after the cipher and the sign “- on the reverse channel is fed to the input of information input block 2 and entered into the calculator block 3. If the“ -OUT command from time block 1 and polling pulse from information input block 2 coincides, and a control unit 15, the latter outputs a data input unit 2 on the reverse channel signal "readiness indicator, and then to cement code sequence described above and the sign" -. At the same time, the control unit 15 generates a command to read the number from the counter 17.

The input of the counter 17 receives pulses from the metering unit 16, the number of pulses in the series is proportional to the weight of each dose of cement passed through the dispenser. As a result, the counter 17 accumulates a number proportional to the totalized consumption of cement in the concrete mixing unit for the period between two adjacent readings.

The number from the output of the counter 17 but to the command from the control unit 15 is fed in parallel code to the input of the first shift register 12.

By the time the cement cipher is issued and the sign "- by the control unit 15 to the information input unit 2 from the control unit, a series of clock pulses is output from the control unit to poll the first shift register 12, the output of which is proportional to the cement consumption in the concrete mixing unit following the cipher cement and the sign “- through the return channel is fed to the input of the input block 2 and entered into the computing unit 3. Thus, in mode B, two messages are automatically formed and stored in the memory of block 3: about the weight cient in silos and on the weight of the cement consumed in the concrete mixing site.

In the mode of operational accounting of cement, data on its receipt, availability and consumption, entered in computing unit 3, are used to calculate cement losses that occur during transport and storage operations and dosing (the weight of the container, the presence, consumption, the result is equal to the loss of cement for

controlled time span).

A device for the operational accounting of cement provides the dispatcher with reliable information on the state of the process of transport and warehouse processing and dosing of cement. When the actual loss of cement exceeds the normative information, printed out, is used for timely taking measures in order to eliminate potential factors, their factors.

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Subject invention

A cement metering device containing track sensors, a control unit, a control command driver, adders, receiving units, a switch, a filter, an analog-to-digital converter, shift registers, a flow metering unit connected to a meter, an information input unit connected to a computing unit, a time block and a displacement-code converter, characterized in that, in order to increase the reliability of the device, in it the track sensors are connected to the input of the control command generator, the outputs of which are connected to

the inputs of the shift registers, the switch and the control unit, the other inputs of which are connected to the time block and the input block, and the outputs to the counter connected to the input of the first shift register to one of the inputs

switch to the inputs of the shift registers connected to the first adder, and one of the inputs of the first shift register is connected to the output of the analog-digital converter, whose input is connected to the output of the switch, the other inputs of which are connected to the filter connected to the converter displacement code, and the second adder connected to the receiving blocks.