SU706705A2 - Weighing apparatus for determining the quantity of objects of equal mass - Google Patents

Description

(54) WEIGHT DEVICE FOR DETERMINING THE NUMBER OF ITEMS OF EQUAL MASS

The invention relates to the field of weighing technology.

According to the main auth. No. 558175, a weighing device is known for determining the quantity of preyyut 6 in 1 agvyoy mass, which contains a loading platform, a weight converter of a batch of objects into a number of pulses, a control circuit, a weight counter of a batch of objects, a cyclic counter, a setting device, an encoder, indicators, a coincidence circuit; delays and a count of the number of items in the party 1

This device has the disadvantage that it has a greater duration of measurement time.

The purpose of the invention is improving the speed of the device.

To do this, a frequency divider, a switch, and a mode switch are entered into the device, the first output of the mode switch is connected to the shift inputs of a comma of mass indicators of the batch of objects and the number of objects, its second output is connected to the first input of the switch, the second input of which is connected to the output the frequency divider, and the third input of the switch and the input of the frequency divider are connected to the output of the control circuit, and the output of the switch is connected to the second input of the mass converter.

The drawing shows a block diagram of the device.

The device contains a weighing platform 1, the mass converter 2

O batch of items in the number of pulses, control circuit 3, counter 4 of the mass of the batch of items, indicator 5 of the mass

f lots of objects, cyclic counter b, unit 7 masses of one object, encoder 8, mass indicator 9

5 of one item, coincidence circuit 10, counter 11 of the number of items in a batch, indicator 12 of the number of items in a batch, delay circuit 13, frequency healer 14, switch

0 15 modes of operation Coarse and switch 16.

Converter 2 is kinematically connected to platform 1 and connected to

5 by the input of the control circuit 3, the output of which is connected to the counter 4 of the mass of a batch of objects and to the loop counter 6.

The output of cyclic counter bits 6 is connected to the first inputs.

the bits of the coincidence circuit 10, with the second inputs of the bits of which are soy, the zena outputs of the encoder 8 connected to the setpoint generator 7, the output of the matching circuit 10 are connected to the counter 11 and the delay circuit 13, the output of which is connected to the second input of the cyclic counter b.

The device works as follows.

Switch 15 set one of the modes of rude or exact.

The Coarse mode is set if it is necessary to quickly determine the number of objects in the paty without increasing the requirements for measurement accuracy. The force generated by the mass of the objects is transmitted to the converter 2, which converts this force into a proportional one. That is the number of pulses fed to the control circuit 3 / with which the pulses go to the counter 4 of the mass of the batch of objects and to the cyclic counter b.

The mass of one object is determined by the setter 7. The numbers from the cyclic counter of the setpoint bis bis 7 through the encoder 8 are fed to the coincidental 10 scheme. If the numbers supplied to the matching scheme 10 coincide; The latter produces a pulse, which is fed to the counter 11 of the number of objects and at the same time this same pulse, delayed by the circuit 13, sets the counter 6 to the zero state. As the pulses from converter 2 arrive, the cycle repeats

At the end of the booster batch of items, the control circuit 3 through. the switch 16 sends a signal to the converter 2 and stops the access of pulses to the counters 4, 6. Indication of the values of the mass of a batch of objects, the mass of one object and the number of objects in a batch is carried out with the corresponding indicators 5, 9 and 12,

Consider the operation of the proposed device in the exact mode. The switch 15 is set to. The position Exactly when you need to make a measurement with a given accuracy. In this case, the switch 16 does not transmit to converter 2; the signal from control circuit 3 prevents pulses from entering counters 4 and 6. On converter 2, such

the signal comes through; The commutator 16 is divided by the frequency divider 14 by 10 after 14 ten pulses from the control circuit 3 arrive at the divider, i.e. a summation of ten measurements taken with a coarse determination of the number of items in a batch is obtained.

An increase in the accuracy of determining the number of objects in a batch is due to the fact that when summing up the ten measurements, the residuals in the cyclic counter b are also added, which were not taken into account during the Coarse measurement mode.

2 In order for the measurement result not to be displayed at this magnification 10 times, a comma has been shifted in Indicators 5 and 12 by changing the position of the switch 15.

Improving the speed of the device provides him with benefits. when dosing the number of items in the party. In this case, predosing is done quickly in the Coarse mode, since the measurement cycle is 10 times smaller than the measurement cycle in the Precise mode.

Dosing in the regime is accurately carried out only at the final stage of dosing.

0,. .

Claims (1)

1. USSR author's certificate 5 No. 558175, cl. O01, G 19/413, 1976 (prototype).