JPS5916648B2 - counting scale - Google Patents

Description

[Detailed description of the invention] The present invention relates to a counting scale that counts the total number of items based on the total weight.

The counting method of conventional counting scales is, for example, to place n samples on a sample scale (a small scale) and measure their weight S, and then to place all the objects to be measured on a total weight (a large scale) and calculate their weight T.
The total number N is calculated by performing the following calculation from the weight value S of the sample scale, the weight value T of the total weight, and the number n of samples.

Xn-N In such a method, there is a high possibility of making a mistake because a person counts n samples.

Moreover, since this number n is directly related to the total number N, if this n is calculated incorrectly, the total number N will be completely different.

To make matters worse, it is not possible to easily determine whether such an error occurred when weighing the sample or not, so if you believe the sample weight, the total number N will be determined incorrectly. Put it away.

Furthermore, the counting accuracy is determined by how well the weight of the sample pushed up represents the population, but the measurer has no idea how accurate the measurement is.

The present invention eliminates such drawbacks and proposes a counting scale with no room for human error.The purpose of the present invention is to solve this problem by proposing a counting scale with no room for human error. The unit weight storage unit stores the unit weight value, the measured value of the sample scale output, and the stored value of the output of the unit weight storage unit are input, and the ratio is taken to calculate the number of samples of the object to be measured to be pushed up. The number of samples to be calculated is input to the sample scale output and the total weight output, and the number of samples output from the sample number calculation unit is input, and the total electrical value of the sample scale and the object to be measured is calculated. The present invention is characterized by comprising a total number calculation section that calculates the total number of objects to be measured by multiplying the ratio of the weighed value of the objects to be measured by the number of samples, one of which is described below. Examples will be described based on the drawings.

In FIG. 1, 1 is a sample scale, 2 is a total weight scale, and the outputs of each are connected to a total number calculating section 3.

Reference numeral 4 denotes a storage switch that is operated at the start of measurement, and when the switch is closed, the weighed value of the sample scale 1 is stored in the unit weight storage section 5.

Reference numeral 6 denotes a sample number calculation unit that divides the weight value of the sample scale 1 by the value stored in the unit weight storage unit 5.

The weight value currently stored in the unit weight storage unit 5 is a.

When the weight value of the sample scale 1 is S, the following calculation is performed: m=d1±Δd...Song...(1)O The following calculation is performed, and dl is output as the sample number signal.

Therefore, first, place the object to be measured on sample scale 1.
The weight value a is recorded using the memory switch 4.

When stored in the unit weight storage section 5, the output signal of the sample number calculation section 6 is a signal corresponding to "1".

After that, when an appropriate number of objects to be measured is placed on the sample scale 1 to obtain a weighed value S, the output signal of the sample number calculation section 5 is (
1) A signal d1 corresponding to the number is output from the equation.

The sample number signal d1 is connected to the total number calculating section 3 together with the respective outputs of the sample scale 1 and the total weight scale 2.

Now, all the objects to be measured are placed on the total weight scale 2, and one of them is placed on the sample scale 1 to obtain its weight value a.

is stored in the unit weight storage unit 5, and when an appropriate number of the objects to be measured on the total weight scale 2 are transferred to the sample scale 1, the weight values of the sample scale 1 and the total weight scale 2 are respectively calculated. Assuming S and T, the total number calculation section 3 performs calculations as shown in the following equation to calculate the total number N of standing objects to be measured.

T+S xd, -N±ΔN (2) The total number calculation unit 3 outputs a signal corresponding to the total number N, and the signal is displayed on the display 7.

For example, the operation will be explained using a specific example of counting 100 items of 2I.

Place all the objects to be measured on the total weight scale 2, place one of them as a sample on the sample scale 1, and turn the memory switch 4.
Close operation.

Then, the unit weight storage section 5 becomes a. Then memorize "2".

At that time, the weight value S of sample scale 1 is "2", so
The sample number calculation unit 6 outputs "1" from equation (1).

Therefore, the inputs of the total number calculating section 3 are T-200-2, S-2
, dl-1, so the total number calculation unit 3 calculates 200-2+2 2 Xl from equation (2), and the result is l
'-100J is obtained, and the display 7 displays 100 pieces.

Next, several objects to be measured on the total weight scale 2 are transferred onto the sample scale 1 by hand.

At this time, if the weighing value S of the sample scale 1 is, for example, "16", then the sample number calculating section 6 calculates "
8" is output.

The input of the total number calculation unit 3 is T-200-16,5=
16, dl -8, and from Equation (2) 2, 6 x 8 - 1oo is obtained from the total number calculation unit 3, and the display 7 displays 100 pieces.

Since this display is the same as the previous display, the total number from this time is used.

However, in reality, each unit weight has a slight difference, and since the above calculation involves one sample, it can be said that the counting error is generally larger than the value obtained by calculating the total number of pieces using a sufficiently large number of samples.

However, this value is first informed to the measurer as an approximate value close to the total number of pieces, and from then on, the measurer can manually measure several to several tens of objects on the total weight scale 2 without counting them. This is important in the sense that it can serve as a major basis for allowing measurers to estimate the degree of accuracy improvement in the process of improving counting accuracy when moving to a new system.

Generally, each unit weight has a slight difference, so in the second and subsequent calculations in the sample number calculating section 6, a fraction of ±Δd is generated as shown in equation (1).

Then, the sample number calculating section 6 prepares a new unit weight a1 as shown in the following equation by dividing the sample scale weight value S at that time by the number d at that time.

1 = 8□ ... River (3) 1 This output a1 is the weight value that occurs at the next counting time, for example, when the object to be measured on the total weight scale 2 is transferred by hand to the sample scale 1. The old stored value a is fed back to the unit weight storage section 5 by detecting a change in the value a.

is updated to the new memory value a1.

Since the new unit weight a1 calculated by equation (3) is the average value of a plurality of samples, it can be said that it is more representative of the population than the previous unit weight.

Therefore, improvement in counting accuracy can be expected. The measurer compares the total number N of the previous time with the previous total number N, and if it is very close, the measurer uses the current total number N, assuming that the measurement is accurate.

If the values are not very close or if you want to obtain a more accurate count value, the same operation will be repeated.

That is, the measurer again transfers several to several tens of objects to be measured onto the sample scale 1 without counting them on the total weight 2.

Then, the weight value S of the sample scale 1 is calculated by the sample number calculation unit 6.
is input to the unit weight value a1 in the newly determined unit weight storage unit 5, and by calculation of equations (1) and (3), a new number of samples d1 is input to the total number calculation unit 6, and a new unit weight value a is input.
Prepare 1.

Then, the total number calculation unit 3 calculates a new total number N from the new number d1 of samples and the weight values S and T of the current sample scale 1 and total weight 2.

Then, it is decided whether to adopt or not by comparing it with the previous total number N.

Repeat the same process below.

In addition, in the calculation of formula (1), if the condition ct<o, 5 is not satisfied, (at the time of weighing aJ for the first time, that one weight deviated by a wide range from the average value of the population) ,(b)
It is possible that too many samples were transferred onto the sample scale 1 by hand.

In these cases, the alarm device 8 is activated to issue an alarm to notify the measurer of this and make him or her start over from the beginning.

FIG. 2 shows another embodiment in which the sample scale 11 has a total weight of 1
It is incorporated on 2.

Therefore, the measured value of the total weight 12 directly becomes the total weight T' of the object to be measured, and based on this, the total number calculating section 3 calculates -Xd1-N±ΔN (4). It would be a good thing if you could.

As described above, according to the present invention, at first, only one sample is placed on the sample push-up, and from the next time on, it is only necessary to place it on the sample push-up by hand without counting the number of samples, and there is room for human error by the measurer during this time. There were no errors at all, and we were able to count the total number with high accuracy.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is an explanatory diagram showing main parts of another embodiment. 1.11...Sample scale, 2,12...
・Total weight, total...Total number calculation section, 5...
Unit weight storage unit, 6...Sample number calculation unit.

Claims (1)

[Claims] 1. In a counting scale that calculates the total number of objects to be measured using a sample scale and the total weight, the weight value when one of the objects to be measured is placed on a sample pusher is stored. By operating a switch, the unit weight storage unit stores the unit weight value, the weighed value of the sample scale output, and the stored value of the unit weight storage unit output are input, and the ratio is taken and the sample is pushed up. A sample number calculation unit calculates the number of samples, and the weighed values of the sample scale output and total weight output, and the number of samples output from the sample number calculation unit are input, and the sample number calculation unit calculates the total number of objects to be measured on the sample scale and the total weight. 1. A counting scale comprising: a total number calculation unit that calculates the total number of objects to be measured by multiplying the ratio of the electric value and the weighed value of the object to be measured by the number of samples. 2. The counting scale according to claim 1, characterized in that a sample scale and a total weight are provided separately. 3. The counting scale according to claim 1, characterized in that the sample scale is incorporated into a general pusher.