JPH0134093Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a display device, and more particularly to a device for displaying the deviation of the weight of an article to be weighed from a reference value, the allowable upper limit deviation, and the allowable lower limit deviation in the form of a bar graph.

BACKGROUND ART Conventionally, there has been a device that displays a deviation, an upper limit deviation, and a lower limit deviation of the weight of an article to be weighed from a reference weight, each of which displays these digitally. However, with such a device, it is difficult to determine the interrelationship between the deviation, the allowable upper limit deviation, and the allowable lower limit deviation just by looking at it.

The object of this invention is to provide a display device that makes it easy to see the correlation between the deviation, the allowable upper limit deviation, and the allowable lower limit deviation.

This invention will be explained below based on one embodiment shown in the drawings. FIG. 1 is a front view of the display device according to this invention, in which 2 is a display section for displaying the upper limit deviation and excess quantity, 4 is a display section for reference weight and proper quantity, and 6 is a display section for lower limit deviation and light quantity. Switch the setting/count switch 8 to the setting side, press the upper limit key 10,
When the numerical key 12 is operated, the set value is displayed on the display section 2 via the calculation section 14 and drive section 16a shown in FIG. In this state, when the memory key 18 is pressed, the allowable upper limit deviation storage section 20
The setting value is stored in . Similarly, reference value key 2
1. By operating the lower limit key 23 and the numerical key 12, the reference weight and the allowable lower limit deviation are displayed on the display sections 4 and 6, respectively, and by operating the memory key 8, the reference value storage section is displayed. 24 and the allowable lower limit deviation storage section 22.

A load cell 26 is provided on a weighing conveyor (not shown) and sequentially generates an analog output corresponding to the weight of the article to be weighed conveyed by the weighing conveyor. This output is converted into a digital signal by the A/D converter 28 and stored in the weight storage section 30. The calculation unit 14 calculates the difference between the value stored in the weight storage unit 30 and the value stored in the reference value storage unit 24,
It is stored in the deviation value storage section 32. The stored value of one of the deviation value storage section 32, reference value storage section 24, and weight storage section 30 is displayed on the display section 36 by switching the weight/deviation/reference value changeover switch 34.

At the same time, the calculation section 14 compares the stored value of the deviation value storage section 32 with the stored value of the allowable upper limit deviation storage section 20 and the stored value of the allowable lower limit deviation storage section 22, and determines whether the article to be weighed is a suitable amount, an excessive amount, or a light weight. Determine which one,
The corresponding one of the appropriate amount lamp 38, excessive amount lamp 40, and light weight lamp 42 is turned on. This determination is made for each article to be weighed. The calculation unit 14 further counts and stores the number of appropriate quantity products, excessive quantity products, and lightweight products, and when the setting/count switch 8 is switched to the number side, the number of excess quantity products is displayed on the display unit 2, and the number of excess quantity products is displayed on the display unit 4. The number of appropriate quantity items is displayed on the display section 6, and the number of lightweight items is displayed on the display section 6.

Reference numeral 44 denotes a bar graph display section, which consists of two upper and lower display sections 46 and 48. The upper display section 46 displays the amount of deviation, and the lower display section 48 displays the allowable upper limit deviation and allowable lower limit deviation. The upper display section 46 has 101 segments A0 to A100, and the lower display section 46 also has 101 segments B0 to B100. The display parts 46 and 48 have two segments in one
g, and a scale of 0g is provided at the center of the lower side of the lower display section 48, and scales of up to ±25g are provided every 5g to the left and right of this. Therefore, as shown in FIG. 3, A0,
B0 becomes -25g, A10, B10 becomes -20g, A
20, B20 is -15g, A30, B30 is -10
g, A40, B40 to -5g, A50, B5
0 becomes 0g, A60, B60 becomes +5g, A7
0, B70 +10g, A80, B80 +15g
, A90, B90 is +20g, A100, B1
00 corresponds to +25g. Upper display section 4
6 segments A0 and A1 to A10 and segments B0 and B1 to B1 of the lower display section 48
0 and has a common grid G1. Similarly, segments A11 to A20 and B11 to B20
, A21 to A30, B21 to A30, and...
...A91 to A100 and B91 to B100 have common grids G2 to G10, respectively. Segment A0 is connected to a series circuit of drive unit 50a, gate 52a and memory 54a, and segments A1, A11...A91 are connected to drive unit 5.
0b, the gate 52b, and the memory 54b. The other segments are similarly connected to the series circuit of drive units 50c to 50k, gates 52c to 52k, and memories 54c to 54k. Similarly, segments B0 to B100 also have driving parts 56a to 56k and gates 58a to 58k.
and connected to a series circuit of memory devices 60a to 60k. Grids G1 to G10 respectively have driving parts 62a to 62j and gates 64a to 64j.
and a series circuit of the memories 66a to 66j. Drive signals S1 and S2 are supplied to gates 52a to 52k, and gates 58a to 58k are supplied with drive signals S1 and S2.
are supplied with drive signals S3 and S5, and the gate 64
Drive signals S1, S2, S3, S are provided for a to 64j.
5 is supplied. As shown in FIG. 4, the drive signal S5 is a combination of a signal S4 generated by the repetitive control unit 68 in a time-divisional manner together with the drive signals S1 to S3, and a signal generated by the pulse generator 70 at a longer period. This is the output of the AND circuit 72. Note that each memory device erases the memory immediately after storing the gate signal.

The control unit 68 controls the storage units 54a to 66 based on the stored value in the deviation value storage unit 32, the stored value in the allowable lower limit deviation storage unit 22, and the stored value in the allowable upper limit deviation storage unit 20.
Store the gate signal i in j. The gate signals supplied to the memories 54a to 66j are applied to the gates 52 connected to the memories 54a to 66j.
Open a to 58k and apply drive signals S1, S2, S
3 and S5 are supplied to each drive circuit 50a to 50k. Each segment A0 to B100 is configured to light up when it receives a signal from the drive circuit simultaneously with the grid to which it is connected. Therefore, for example, if the deviation value is -7g, the allowable lower limit deviation is -13.5g, and the allowable upper limit deviation is +11g, when the drive signal S1 is generated, the control unit 68 will control the memory devices 66a, 66b, 66c. ,54
A gate signal i is supplied to i, 54j, and 54k.
As a result, the gates 64a, 64b, 64c,
52i, 52j, 52k are opened, the drive signal S1 is transmitted to the drive units 62a, 62b, 62c, 50.
i, 50j, and 50k. As a result, the segment A8, as shown by range C1 in FIG.
A9, A10, A18, A19, A20, A2
8, A29, and A30 light up.

Next, when the drive signal S2 is generated, the control section 68 controls the memory devices 66a, 66b, 66c, 66
A gate signal i is supplied to d, 54a to 54h. Therefore, in the same manner as above, range C2 is shown in FIG.
As shown in the segments A0, A1 to A7, A
11 to A17, A21 to 27, A31 to A
36 lights up. Therefore, in the upper display section 46,
In the ranges C1 and C2 together, the segments corresponding to -25g to -7g appear to be lit.

Next, when the drive signal S3 is generated, the control section 68 controls the storage sections 66a to 66j, 60a, 60
A gate signal i is supplied to b. With this, B0, B10, B20, B30, B
40, B50, B60, B70, B80, B9
0, B100 lights up. Therefore, the lower display section 4
8 is -25g, -20g, -15g, -10g, -5g, 0
The segments corresponding to g, +5g, +10g, +15g, +20g, and +25g light up.

When the drive signal S5 is generated, the control unit 68
supplies the gate signal i to the memories 66o, 66h, 54c, and 54d. As a result, segments B23 and B72 are lit in the same manner as described above. However, since the cycle of the drive signal S5 is longer than the cycles of the other drive signals, the segments B23 and B72 corresponding to -13.5g and -11g appear to blink.

The upper display section 46 is configured such that if the stored value of the deviation value storage section 32 is less than -25 g, the upper display section 46 does not light up, and when the value is +25 g or more, all segments of the upper display section 46 light up. In addition, when the allowable upper limit and allowable lower limit deviation are not set, the segment corresponding to 0g on the lower display section 48 blinks, and if the set value corresponds to the scale, such as -5g, that segment blinks. is configured to do so.

The display device configured in this way uses a bar graph display device to display the deviation value and the allowable upper limit deviation and lower limit deviation in an analog manner.
These interrelationships are becoming easier to see.

In the above embodiment, a bar graph display device is used, but two rows of light emitting diodes may also be used. To display additional deviation values -25
Although all the segments from g to the deviation value are lit, only the segment corresponding to the deviation value may be lit.

[Brief explanation of the drawing]

FIG. 1 is a front view of the display device according to this invention, FIG. 2 is a block diagram of the same, and FIG. 3 is a diagram showing the relationship between each segment of this display device and the displayed weight.
FIG. 4 is a diagram showing the relationship between drive signals used in this display device. 20... Allowable upper limit deviation storage section, 22... Allowable lower limit deviation storage section, 32... Deviation value storage section, 46...
Upper display part (deviation value display part), 48...Lower display part (tolerance value display part), {50a to 50k and 62
a to 62j...driver, 54a to 54k and 62a to 62j...memory device} first control circuit;
{56a to 56k and 62a to 62j... drive section, 66a to 66k and 60a to 60j...
...Memory device} Second control circuit.

Claims (1)

[Scope of utility model registration request] a deviation value display section formed by consecutively arranging a plurality of display elements; a storage section that stores the deviation value of the weight of the article to be weighed from the reference weight value; a first control circuit that supplies a display signal to a display element of the deviation value display section that corresponds to the value; and a permissible deviation comprising a plurality of display elements that are successively arranged in parallel to the deviation value display section. a display section, a storage device for storing the tolerance deviation with respect to the reference weight, and a display device for supplying a display signal to a display element of the tolerance deviation display section corresponding to the stored value based on the stored value of the tolerance deviation storage device. A display device consisting of two control circuits.