SU1377601A1 - Weigher - Google Patents

Abstract

Invention m. used to account for the total weight of objects as they arrive. The purpose of the invention is to increase accuracy. The device ensures the accuracy of accounting for the total weight of objects entering the vehicle. Signals of excess weight of objects from the output of the element And 17, as well as signals that take into account the number of paired objects from the output of the element 34, are recorded and accumulated in the accounting unit 8. When the counter 6 reaches the total weight equal to the specified loading weight in the setting unit 4, the signal from the output of the comparison element 9 through the driver 10 enters the accounting unit 8, recording the end of the vehicle load. 2 Il. (;

Description

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The invention relates to weighing technology and can be used, for example, to account for the total weight of objects as they arrive.

The purpose of the invention is to increase accuracy.

FIG. a block diagram of the device is shown; FIG. 2 shows timing diagrams explaining his work.

The device contains a load-receiving platform 1, an object position sensor 2, a weight measuring unit 3, a loading weight sensor 4, a weight counter 5 of the nth weight, a total weight counter 6, display units 7 and accounting 8, txeMy 9 comparison, the imaging unit 10 of the object loading end pulse , multiplexer 11, scheme 1 2 offset of the weight of the object, consisting of decoders I3 and 14 upper and lower weight limits, their respective triggers 15 and 16, and elements 17 and 18, counter 19 of the weight of the n-1st object, block 20 Generators made up of low 2 and high generators 22 frequencies, counter 23 impulses of a co-and trigger 24 control of a high-frequency generator, a controller 25 consisting of a decoder 26 and a trigger 27 of the weight of paired objects, triggers 28 and 29 overflow of counters of weight of p and n-1 objects, five elements AND 30 - 34 and three elements OR 35 - 37.

The device works as follows

Using the setting device 4, the installation at the first input of the circuit 9 compares the loading weight of the vehicle, as well as resetting the total weight of the counter 6 into O. If there is no object on the load platform 1, position sensor 2 maintains counters 5 and 23, triggers 15, 27 and 28 in state O, trigger 16 in state 1, and multiplexer 11 in position that provides the connection of total weight counter 6

block 7 display. With the passage of an object in the zone of sensor 2, the weighing unit 3 forms a sequence of pulses, the number of which (P) corresponds to the weight of the object (FIG. 2, out.C). This sequence through the OR element 35 is fed to the input of counter 5 of the weight of the nth object Simultaneously the front edge of the output

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A second signal of the position sensor 2 starts the generator 21, the period of the output signals of which corresponds to the time the object is in the form of a position sensor 2 (FIG. 2, out 21) and also switches the multiplexer} 1 to transfer information from the output of the counter 5 to the display unit 7. Thus, the display unit during the passage of the object through the loading platform displays the weight of the object, and during its absence on the platform - the total total weight.

If in the process of filling the counter 5 its output value reaches the lower maximum permissible value of the object weight, the output signal of the decoder 14 sets the trigger 16 to the state O, otherwise the trigger 16 remains in state 1, fixing the underweight of the object. When the upper limit value of the object weight is exceeded, the output signal of the decoder 13 sets to state 1 the trigger 15, which fixes the excess weight of the object. The recording of single states of the flip-flops 15 and 16 into the metering unit 8 is carried out by a pulse of the generator 21 arriving at the gate inputs of the elements 17 and 18 (Fig. 2, out 17 and 18).

An 11 pulse generator 21 also sets a state I control trigger 24, which starts a high frequency generator 22 with a reference pulse sequence f (FIG. 2, output 22) equal to the capacity of the weight counters of n and n-1 objects (5 and 19), as well as counter 23, which sets the overflow signal to trigger 24. In the state O, blocking generator 22. This sequence through the elements AND 30 and OR 35 is fed to the input of the counter of the 5th object. Counter 5 overflows when the number of pulses f-P arrives at it. The overflow signal of counter 5 sets into state O counter 19 and state 1 trigger 28, which blocks further passage of pulses of sequence f through element I 30 and unlock-hands) 1st element And 31, the number of pulses equal to P from which the output through element OR 36 enters the counter 6 total weight, as well as through the element OR 37 - at the counter 19 weight

n-1st object. Thus, in meter-19, there will be the weight value of the object of the previous measurement.

If in the process of loading objects into a vehicle on a conveyor line, a nonstandard situation arises (pairing objects), then as they pass through the cargo: platform, the weight detected by the decoder 26 and trigger 27. The latter blocks the passage of the f series through the E 30 element and ensures that this the series through the element AND 32, as well as the element OR 37 at the input of the counter of 19 n-1 object. When counter 1 overflows through a counting input, a trigger 29 is set to state 1, which allows pulses to pass through AND 33 and OR 36 to the input of counter 6 of total weight. In this case, the pulses f, continuing to arrive at the input of the counter 19, ensure its regeneration. During the passage in the sensor 2 position of the position of several paired objects, the generator 21 produces a number of pulses equal to the number of paired objects passing through the cargo platform (Fig. 2, v. 21). In accordance with this number of pulses, the generator 22 forms the reference series of pulses f that carried out the census of information from the counter of 19 n – 1 object to the counter 6 of the total weight (figure 2, outg. 22). This ensures the accuracy of accounting for the gross weight of objects entering the vehicle. Signals of excess weight of objects from the output of the element And 17, as well as signals that take into account the number of paired objects from the output of the element And 34 (Fig. 2, out 17 and 34), are recorded and accumulated in the accounting unit 8. When the counter 6 reaches the total weight equal to the specified loading weight in the setting unit 4, the signal from the output of the comparison element 9 through the driver 10 enters the accounting unit 8, recording the end, of the vehicle loading.

Accounting for the total weight of objects entering the vehicle from the conveyor belt allows obtaining with sufficient accuracy information about the net weight of the loaded vehicle,

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means, the number of irregularities in the delivery of objects to the transport (pairing of objects) and the deviation of the object’s weight from the norm.

Pho. The scope of the invention A weighing device comprising a load receiving platform, an object position sensor, a weight measuring unit, a loading weight setter, a weight counter of an nth object, a total weight counter, a display unit and a metering unit, the comparison circuit whose information inputs are connected to the loading weight setpoint meter and the total meter the weight, and the output through the pulse shaper is sent to the metering unit, characterized in that, in order to improve the accuracy, into it a multiplexer, an account of the deviation of the weight of the object, consisting of the upper and lower weight limiters, two triggers and two elements And, a weight counter (nl) -ro object, a master oscillator block consisting of a low-frequency and high-frequency oscillators, a pulse counter and a high-frequency generator control trigger, and a controller consisting from the decoder and the weight trigger of the paired objects, the overflow triggers of the weight counters (nl) and the nth objects, five AND elements and three OR elements, and the object position sensor is connected to the same inputs of two triggering circuits the weight of the object, the R-inputs of the overflow trigger of the weight counter of the nth object and the weight trigger of the paired objects of the controller, the R-inputs of the pulse counter of the master oscillator unit and the weight counter of the nth object, the control input of the multiplexer and the low-frequency generator whose output is connected with the E-input of the overflow trigger of the weight counter (n-th object, control inputs of the elements AND of the circuit for accounting for the deviations of weight and the fifth element of the controller AND the S-input of the high-frequency generator control trigger, the output of which is connected ene to the input of this generator is connected to the output of the first inputs of the first, second and third elements and a controller, the input counter unit oscillators pulses vkod

well, the number of loaded transport, which is connected to the counting input

the control trigger of the high-frequency generator, the control output of the loading weight master is connected to the K input of the total weight counter, the information output of which is connected to the first input of the multiplexer, the output of KOTOpoi o is connected to the indication and metering units, the output of the weighing unit is connected to the first input of the first element OR, the output of which is connected to the input of the counter of the nth object, the information output of which is connected to the second input of the multiplexer, the inputs of the decoders of the weight variation metering scheme and the decoder ve The controller's paired objects, the output of which is connected to the S-input of the trigger of the paired objects5, whose zero output is connected to the second input of the first element I, and the single output from the second input of the third and fifth elements I, the output of the fifth element I is connected to the unit accounting, the outputs of the decryptors of the scheme of accounting for deviations of the weight of the object are connected to

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other inputs of the flip-flops of this scheme, whose outputs through the elements AND are connected to the metering unit, the control output of the weight counter of the nth object is connected to the R input of the counter (nl) of the object and the count input of the overflow trigger, the weight counter of the nth object, the outputs of which are connected to the third and second inputs of the first and second elements AND, the output of the first element AND connected to the second input of the first element OR, and the second element AND to the first inputs of the second and third elements OR, the outputs of which are connected respectively. to the inputs of the total weight counters and the weight counter (nl) -ro of the object and the first input of the fourth element AND, the output of which is connected to the second input of the second element OR, the output of the weight counter (nl) -ro of the object is connected to the counting input of its overflow trigger, output which is connected to the second input of the fourth element I.

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Claims (1)

Fo. claims of the invention A weighing device comprising a loading platform, an object position sensor, a weight measuring unit, a loading weight adjuster, a weight counter of the ηth object, a total weight counter, an indication unit and a metering unit, a comparison circuit whose information inputs are connected to the loading weight adjuster and a counter total weight, and the output through the pulse shaper - to the metering unit, characterized in that, in order to increase accuracy, a multiplexer is introduced into it, an object weight deviation accounting scheme consisting of and decoders of the upper and lower values of the weight limits, two triggers and two AND elements, a weight counter (nl) -ro of the object, a block of master oscillators consisting of low-frequency and high-frequency generators, a pulse counter and a trigger for controlling the high-frequency generator, and a controller consisting of a decoder and weight triggers for paired objects, overflow triggers for weight meters (η-l) and n-th objects, five AND elements and three OR elements, moreover, the position sensor of the object is connected to one input of two triggers of the deviation meter the weight of the object, the R inputs of the overflow trigger for the counter of the weight of the ηth object and the trigger for the weight of the paired objects of the controller, the R inputs of the pulse counter of the master oscillator unit and the weight counter of the ηth object, which controls the input of the multiplexer and low-frequency generator, the output of which is connected to The R-input of the overflow trigger for the weight counter (nl) -ro of the object, the control inputs of the elements AND the circuit for taking into account the deviations of the weight and the fifth element AND of the controller and the S-input of the trigger for controlling the high-frequency generator, the output of which is connected to the input this generator is connected to the output of the first inputs of the first, second and third elements and a controller, the input counter unit pulse oscillators, the output of which is connected to the counting input 5 1377601 6 triggers for controlling the high-frequency generator, the control output of the loading weight adjuster is connected to the R-input of the total weight counter, the information output of which is connected to the first input of the multiplexer, the output of which is connected to the indication and metering units, the output of the weighing unit is connected to the first input of the first element OR, the output of which is connected to the counter input of the η-th object, the information output of which is connected to the second input of the multiplexer, the inputs of the decoders of the weight deviation and decryption the weight coupler of the controller’s paired objects, the output of which is connected to the S-input of the coupled object trigger, the zero output of which is connected to the second input of the first AND element, and the single output is connected to the second input of the third and fifth AND elements, the output of the fifth AND element is connected to to the accounting unit., the outputs of the decoders of the accounting system for deviations of 25 weight of the object are connected to other inputs of the triggers of this circuit, the outputs of which are connected via the And elements to the accounting unit, the control output of the weight counter of the ηth object is connected to the R-input of the counter (p-1 ) th volume the one and the count input overflow latch weight counter n-th object, the outputs of which are connected to the third and second inputs of first and second AND gates, the output of the first AND gate is connected to the second ¹ input of a first OR gate, a second AND - the first inputs of the second and the third OR element, the outputs of which are connected respectively. to the inputs of the total weight counters and the weight counter of the (n-1) th object and the first input of the fourth AND element, the output of which is connected to the second input of the second OR element, the output of the weight counter (nl) -ro of the object is connected to the counting input of its overflow trigger whose output is connected to the second input of the fourth element I.