JPS5819206B2 - Processing method and device for processing measurement data into display data in a weighing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for processing weighing data into display data in a weighing device.

Conventionally, in a weighing device, the weighing data obtained from the weighing section is output as display data to the display section without any processing.

For this reason, changes in measurement data due to mechanical vibrations of the device are directly displayed as changes in display data, resulting in a problem of severe flickering.

Recently, weighing devices equipped with label printing devices have been developed, but these devices have built-in devices that cause mechanical vibrations, such as printers and motors, so they have the problem of particularly severe display flickering. Ta.

For this reason, for example, a method may be considered in which the display is fixed once the metric has stabilized, but with this method, even if the metric has stabilized once, there is a problem that it will not be possible to follow the display if it changes significantly thereafter.

This invention was devised to solve such problems, and the display data does not change much even when there is mechanical vibration, so that stable display operation can be performed without much flickering. It is an object of the present invention to provide a method and a processing device for processing metric data into display data in a measuring device, which can perform the following, and which is free from the risk of deterioration in followability with respect to changes in metric values.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the circuit configuration of the entire apparatus, and numeral 1 indicates a weighing section for weighing articles.

This weighing section 1 outputs analog weighing data,
The measurement data is digitized by an A/D converter 2 and counted by an up/down counter 3.

4 is a first memory such as a register forming an input memory, and 5 is a second memory such as a register forming an output memory.

The measurement data counted by the counter 3 is sequentially loaded into the first memory 4.

Further, the second memory 5 stores reference measurement data.

6 is the measurement data d1 of the first storage device 4 and the second
Memory unit 50 reference measurement data d.

When the difference d1-do=X is IXI≧2, the first signal S1 is output from terminal A, when X is +1, the second signal S2 is output from terminal B, and This is a comparator that outputs the third signal S3 from the terminal C when the signal is -1.

The reference measurement data stored in the second memory 5 is supplied as display data to a display register 7 and displayed on a display device 8.

Reference numeral 9 denotes a first signal input to which the second signal S2 is inputted from the comparator 6.
The shift register 10 is a second shift register to which the third signal S3 from the comparator 6 is input.

Each of these shift registers 9 and 10 consists of three digits, and the digits are shifted at the timing when the weighing data is taken in from the counter 3 to the first memory 4.

Each digit output of the first shift register 9 is input to the first AND gate 11 for three-man power, and each digit output of the second shift register 10 is input to the second AND gate 1 for three-man power.
I am trying to enter it in 2.

Then, the first signal S1 of the comparator 6 is transferred to the third signal S1 for two-man power.
The output of the first and second ant game NL 12 is inputted to one of the fourth AND gate 15 for two-man power operation via the first OR gate 14. .

The measurement data is inputted from the first memory device 4 to the other of the third and fourth anime games N 3 and 15.

The outputs of the third and fourth analog games N3 and 15 are supplied to the second memory 5 via the second OR gate 16.

Note that the output of the first OR gate 14 is also used as the clear signal CL for both the shift registers 9 and 10.

Next, the operation of the apparatus of this embodiment constructed as described above will be described with reference to FIG.

Note that each signal SI, S2 . S3
will be explained as n 1 n when it is output, and O'' when it is not output.

For example, from the measuring section 1 side to the A/D converter 2 and counter 3
The measurement data is taken into the first storage device 4 via the time t.

Assume that there is a change as shown in a in FIG. 2 with a predetermined timing time of ~tta.

First t. In this case, the scale of the weighing data is "100'"
Since the two scales have changed from "to 102'", the first signal S1 of the comparator 6 becomes "1", and the third AND gate 13
is opened and the weighing data is loaded into the first storage device 4.”1
02'' is also taken into the second memory 5 via the third AND gate 13 and the second OR gate 16, and becomes display data.

As shown in FIG. 2B, the display data supplied to the display device 8 also reaches the time t.

, it changes from "100" to °'102".

At time t1, the scale changes from "102" to "104".
”, so in this case as well, the 3rd scale changes to ”.
The AND gate 13 opens and the display data is “102”
to '104'.

At time t2, the scale of the weighing data has changed by three scales from "104" to "101", so in this case as well, the third AND gate 13 opens and the display data is "
104'' to '101''.

Subsequently, at time t3, the measurement data changes from "101".
When the scale increases to 102'', the second signal S of the comparator 6
2 becomes 1'' and is input to the first shift register 9.

However, in the current state, each digit of the first shift register 9 is 1
, '0', 'O', the output of the first AND gate 11 will never become '1''.

Therefore, in this state, the reference measurement data in the second memory 6 is not changed.

Therefore, the display data also remains unchanged.

When the measurement data changes from 102'' to 103'' at the next time t4, the difference between the measurement data and the reference measurement data becomes 2 scales, so the measurement data in the first memory 4 changes as before. The reference measurement data supplied to the second memory 5 through the third AND gate 13 and the second OR gate 16 changes from '101' to '103', and the display data becomes b in FIG. As shown “101
It changes from '103'.

After that, the measurement data is changed to ' at time t5jt6jt7.
Even if it changes from 104'' to 103'' to 102'', the reference measurement data is 103'' and the change in difference is +1.
0, -1, so the display data does not change as shown in FIG. 2b.

However, at time t8, the metric data further increases to 101.
``At this time, the difference from the standard measurement data is 2 scales, so the standard measurement data changes from 103'' to 101''.
The display data changes.

Then, when the measurement data changes from "101" to "103" at time tto, there is a difference of 2 scales at this time, so the reference measurement data also changes from "101" to "103".
”.

After that, even if the measurement data changes to 104'', 103'', and 103' at time t11 t j1□ and t13, the reference measurement data is "103" and the change in difference is +1.
0 and O, so the display data does not change as shown in FIG. 2b.

Then, at time t14, the measurement data changes from 103'' to 1.
04''', the difference from the reference measurement data is +1, so the second signal S2 becomes II II II, and the contents of the first shift register 9 become 91111, e!
011,0''.

However, in this state, the gate of the first AND gate 11 does not open, so the measurement data in the first memory 4 is supplied to the second memory 5 via the fourth AND gate 15 and the second OR gate 16. It will not be done.

In other words, the reference measurement data does not change.

Subsequently, at time t15, when the measurement data "104" is input to the first memory 4, the contents of the first shift register 9 become 1", ", 0'".

However, this situation Also in the case where the gate of the first AND gate 11 is

Since it is not opened, the reference measurement data in the second memory 5 does not change.

Furthermore, at time tt6, when the measurement data '104'' is input to the first memory 4, the contents of the first shift register 9 become 1', '1'', N 1 t+.

Then, the gate of the first AND gate 11 opens, so that the output "1" from the first AND gate 11 is inputted to the fourth AND gate 15 via the first OR gate 14.

Therefore, the weighing data input into the first memory device 4"
104'' is supplied to the second memory 5 via the fourth AND gate 15 and the second OR gate 16.

In this way, the standard weighing data changes from °'103" to 104".
The display data changes to "1" as shown in Figure 2b.
It changes from 03" to 104".

Note that depending on the output of the first AND gate 11, the first and second
The storage contents of the shift registers 9 and 10 are cleared.

In this way, even if the metric data input to the first memory 4 changes drastically as shown in FIG. 2A, the display data does not change so drastically as shown in FIG. 2B.

Therefore, even if the measurement data changes drastically due to mechanical vibrations, the flickering of the display is not so severe and stable display can be performed.

In addition, the conditions for the display data to change are when the newly imported weight data changes by two or more scales when compared with the standard weighing data stored in the second memory 5, and when the data changes three times in a row. Since it is assumed that there is a change of 1 scale, even if the weight data is stable by 1, if there is a change in measurement after that, the display data will be able to sufficiently follow the change in measurement, and there is a risk that the reliability of the display data will be lost. There is no such thing.

The above description has been made of a system in which the processing of measurement data into display data is configured using a memory, a comparator, a shift register, a gate, etc., but the invention is not necessarily limited to these; for example, it can be configured using a microcomputer. You can also do that.

An example in which a microcomputer is used will be described below.

Fig. 3 shows the configuration of the basic circuit, 21 is a central processing unit (CPU), 22 is a decoder, 23 is a RAM (random access memory), 24 is a ROM (read only memory), and 25 is a decoder. Input/output port for measuring section, etc.
26 is a keyboard/display controller, 2T is a keyboard, 28 is a display unit, 29 is a printer controller, 3
0 is the printer.

The RAM 23 has a first memory 4 as shown in FIG.
The first memory (Wl) 23 and the second memory 5 corresponding to
A second memory (W2) 23b corresponding to the first shift register 9, a third memory (W3) 23c corresponding to the first shift register 9,
A fourth memory (W
4) 23d, display memo') 23e, etc. are provided.

The third memo 'J (W3) 23C has W2-
1'' is written only when Wl, 0''' is written otherwise, and the fourth memo! J (W4) 23d has W
Only when 2-W1=-1, "1" is written, and otherwise O" is written.

The central processing unit (CPU) 21 is IW2-WI +≧
2, or the third and fourth memories 23c and 23d
When nlu is written three times in succession, the weighing data in the first memory (Wl) 23a is transferred to the second memory (W2).
At the same time as writing to 23b, the display memo 23e is rewritten based on the contents of the second memory 23'b.

Further, the central processing unit (CPU) 21 includes third and fourth memories 23c.

When it is detected that "1" is written three times in succession to 23d, the data is transferred from the first memory 23a to the second memory 23.
The contents of the third and fourth memories 23 c and 23 d are cleared at the same time as the measurement data is sent to the memory 23 c and 23 d.

A flowchart showing the control when this microcomputer is used is shown in FIG.

When the weighing data is taken into the first memory 23a, the second
The difference from the memory 23b, W2-Wl, is checked.

If W2-Wl=1, the third memory 23cK″1″
If W 2 - W 1 ==1, Pa1'' is written to the fourth memory, and if 1W2 - Wll≧2, the contents of the first memory 23a are immediately written to the second memo! J
23 b.

Note that in cases other than the above, that is, when W2-W1=0, even if the contents of the first memory are imported into the second memory, they are not imported as shown in the flowchart.

When W2-W1=1, the contents of the third memory 23c are checked, and if 1'' has been written to the memory 23c three times in a row, the contents of the first memory 23a are transferred to the second memory 23b. and the third and fourth memories 23c.

Clear 23d.

Also, when W2-W1=-1, the fourth memo 'J 23
The contents of d are checked and the memo') 23 to 3
When 1'' is written continuously, the memory 23
The contents of a are transferred to the second memory 23b, and the contents of the third and fourth
Clear the memories 23c and 23d.

By using a microcomputer in this way, it is possible to achieve the same functions and obtain the same effects as in the embodiments described above.

As detailed above, according to the present invention, even if the measurement data changes drastically due to mechanical vibrations, etc., the reference measurement data, which is the data for display, does not change that much, and the difference with the measurement data can be increased. A method for processing weighing data into display data in a weighing device that can perform stable display operations with little flickering and no loss of reliability (because it can be controlled) and processing equipment.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the present invention, and Fig. 2 shows the state of change in data in the same embodiment. 3 is a block diagram showing another embodiment of the present invention, FIG. 4 is a diagram showing a part of the RAM in the same embodiment, and FIG. 5 is a flowchart showing the control process of the same embodiment. . 1... Measuring section, 4... First storage device,
5...Second memory device, 6...Comparator,
9,10...Shift register.

Claims (1)

[Claims] 1. In a weighing device that weighs and displays articles, the weighing data is digitized and captured, and the captured weighing data is compared with reference weighing data serving as display data, and the difference is two or more scales. In some cases, the currently captured measurement data is immediately set as the reference measurement data, and when the difference between the three newest measurement data is +1 or -1 consecutively, the currently captured measurement data is set as the reference measurement data. , A method for processing metric data into display data in a weighing device, characterized in that the reference metric data is not changed other than that. 2. A weighing section for weighing articles, a means for digitizing analog weighing data from this weighing section, an input storage section for storing weighing data from this means, and a storage section for storing reference weighing data to be displayed data. Compare the reference measurement data in the output storage section to the output storage section and the measurement data in the input storage section, and determine if the difference X with the reference measurement data is IXI.
a comparator that outputs a first signal when ≧2, a second signal when the difference X is X-+1, and a third signal when the difference X is X--1; means for inputting the weighing data stored in the input storage section into the output storage section by receiving a first signal from the comparator;
and means for inputting the weighing data stored in the input storage section into the output storage section by inputting a second signal or a third signal from the comparator three times in succession. 1. A processing device for processing measurement data into display data in a measurement device, characterized in that: