JPS59182320A - Electronic balance - Google Patents

Abstract

PURPOSE:To improve the efficiency of balancing operation by performing such semianalog display that variation in the weight of a sample is rough when the weight is not close to a target balanced value and made precise more and more as the weight comes closer and closer to the balanced weight value. CONSTITUTION:The weight value of the sample 1 outputted from the balanced value output part 2 of an electronic balance is compared by an arithmetic part 3 with the target balanced value which is determined previously by a balanced weight value setting part 5 and stored in a memory 4 to calculate their difference, which is outputted as a difference weight value. This difference weight value is inputted to a comparison part 8 which judges which numerical stage the difference enters. The driving part 9 of a display device drives and turns on corresponding display elements A, B...F, and G selectively of a semianalog display part 10 constituting the display part 12 on the basis of the decision result.

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to electronic balances.

(b) Prior art In general, in electronic balances, the weight value loaded on the balance is accurately displayed digitally at the time interval of the fortress.
In particular, devices designed with "weighing" operations in mind are equipped with means for displaying the weight of the sample in a relatively rough, quasi-analog manner each time a sample is added to or removed from the balance. When there is a large difference between the target weighed weight value and the quasi-analog display position, the operator can safely add or remove the sample roughly, increasing work efficiency. .

However, in conventional devices, the resolution of the displayed value is constant regardless of the difference between the sample weight and the weighed weight, so after the sample weight approaches the measured target value and the difference becomes less than the displayed resolution. The disadvantage of this method is that the sample must be added and removed in accordance with a sensitive digital display, and the work efficiency rapidly decreases as the final stage of sample addition and removal approaches. be.

(c) Purpose The purpose of the present invention is to provide an electronic balance that is useful for increasing the efficiency of weighing operations by eliminating the above-mentioned drawbacks associated with the prior art and reducing the range that requires careful sample addition and removal during weighing operations. It is about providing.

(d) Structure In order to achieve the above object, the electronic balance according to the present invention has the following features:
Comparison of a weighed value output means for outputting a weighed value of a load, a setting means for setting a plurality of numerical values in stages, and a magnitude relationship of the weighed value with respect to a plurality of set values set by the setting means. a display element provided corresponding to an area divided by the set value, and a display element drive means for selectively driving the display element based on the output of the comparison means.

(e) Examples Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

In the figure, the calculation section 3 calculates the weight value of the sample 1 outputted from the weighed value output section 2 of the electronic balance and the weighed target value determined in advance by the weighed weight value setting section 5 and stored in the memory 4. The difference between the two is calculated and output as a difference weight value. This output is input to a comparator 8 which determines what numerical stage the differential weight value has reached.

By the way, how to divide and configure this numerical means is determined in advance in the setting section 6, and each set value is stored in the memory 7. The comparison unit 8 compares the set value and the difference weight value, and determines which stage the value is at. Based on this determination, the display drive unit 9 controls the display 1.
The corresponding display elements A, B, . The above is the main configuration of this embodiment. In addition, the first
The dotted line in the figure shows the route for converting the output of the weighing value output section 2 of the balance into a digital signal and displaying the accurate weighing value every moment on the digital display section 11 that constitutes the display 12. However, since the details are the same as those of a normal digital display type electronic balance, the explanation thereof will be omitted here.

In the above configuration, for example, the weighed weight value is selected as 123.4 g by the weighed weight value setting section 5, and the weighed weight value of 123.4 g is subtracted from the weighed value by the numerical step setting section 6. The value ΔW is classified into nine numerical stages of unfair intervals as follows.

(11ΔW ≦ -5OA Undefined (2) -50<ΔW ≦ -20B 30g (
3) -20<ΔW≦-5CI5g(41-5<
ΔW<QC, 05g (5) ΔW=OA~GO (6) 0 ΔW <50. E5g(7)5
≦ΔW<20E
15g (8120≦ΔW<50
F 30g (9) 50 ≦ΔW
G Undefined The symbols written on the right side of each ΔW width indicate each display element of the quasi-analog display section 10 that lights up corresponding to ΔW, and the numbers on the right side indicate the size of each ΔW portion. Further, the correspondence between ΔW and the lighting display elements is also shown in FIG. In FIG. 2, hatched areas indicate lighting of display elements.

After completing the above preparation operations, if you load the sample onto the balance, until ΔW reaches -50 g, that is, until the sample weight reaches 73.4 g, the display (Niremen)A on the right end will light up. It is easy to intuitively and qualitatively detect that the sample weight is sufficiently far from the measured target. As ΔW approaches zero, the position of the lighting display element gradually approaches the center, and when ΔW=O1, that is, the sample weight matches the weighed weight value of 123.4 g, all display elements light up and the weighed weight value is reached. Clearly report what has been achieved. In the above process, as can be seen from the width of each step of the ΔW width mentioned above, as ΔW approaches zero, the width of ΔW gradually decreases and the position of the lighting display element changes accordingly. The operator can adjust the degree of caution in adding and removing samples as necessary without wasting any waste.
The efficiency of measuring work is improved. The digital display unit 11 accurately displays the sample weight moment by moment throughout the entire weighing process, and at the final stage of weighing,
Achievement of ΔW=O can also be confirmed by lighting all the display elements described above. In addition, when performing weighing work from a state where the sample weight exceeds the weighed weight value, the lighting display element simply approaches the center from the left side, and the other effects are the same as above, and the explanation is as follows. Omitted.

In the above embodiment, as ΔW approaches zero, not only does the lighting display element move closer to the center, but also the area of the display expands in the vertical direction, making it easier to intuitively detect when ΔW approaches zero. However, in the present invention, as shown in FIG. 3, the display elements are arranged in the - column, and as ΔW approaches zero, the position of the lit display element approaches the center, and the display element closer to the center has a smaller ΔW. It is also possible to configure and implement the system to correspond to the following.

The present invention also provides an arithmetic unit 3 provided in the above embodiment.
, the memory 4 and the weighed weight value setting section 5 are input, the output of the weighed value output section 2 is inputted to the comparison section 8, and the output is directly compared with the set weight value set stepwise by the setting section 6. You can also.

Of course, in this case, assuming that the weighed weight value and the resolution of each display are the same as in the embodiment described based on FIGS. 1 and 2, each set value by the setting means 6 will be as shown in FIG. It goes without saying that ΔW in the formula showing the set width of each stage should be read as W, and that 123.4 should be added to both sides of each formula.

The invention can also be implemented further as follows.

i) In the above embodiment, the low-resolution display element that lights up when the weighed weight value and the weighed value are far apart flashes every predetermined amount of change in the weighed value.Embodiment ii) When the weighed weight value and the weighed value are different When a match is found, the match shall be notified by a separately provided lighting device or buzzer.

iii) Configuring and implementing the weight value setting means as an interface for receiving and receiving data signals from devices other than the electronic balance.

iv) Implementing the numerical value setting means of the present invention by means of numerical signal generation means using a keyboard.

(2) Implementing the numerical value setting means of the present invention using a weight or the like that is applied to the load weighing section of the electronic balance.

vi) In this embodiment, the setting unit 6 is eliminated and the memory 7 is
Enter it as fixed data in advance, such as by converting it to OM.

vii) To be implemented as a counting scale by inputting the number of pieces instead of inputting the weight value.

(F) Effect As can be seen from the above explanation, according to the present invention, when the sample weight is far from the target measured value, the weight change is roughly shown, and as it approaches the measured weight value, the weight change is shown more clearly. By providing highly accurate quasi-analog display, an electronic balance can be obtained that is effective in improving the efficiency of weighing operations.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the operation of display elements in the embodiment. FIG. 3 is a diagram showing the configuration of a display section in another embodiment of the present invention. 1...-Sample 2-Weighed value output section 3-Calculation section 4-Memory 5-Measured weight setting section 6-Weight value setting section 7-Memory 8--Comparison section 9-Display drive section 10- Semi-analog display section 11 - Digital display section 12 - Display section Patent applicant Shimadzu Corporation Agent Patent attorney Nishi 1) New figure 3 procedural amendment stamp button 1981 Patent application No. 56956 2, title of invention Electronic Balance 3: Relation to the amendment case Patent applicant address 3, Kawaramachi-dori Nijo-shita Roots Funato-cho, Nakagyo-ku, Kyoto City
Address 78 Name (199) Shimadzu Corporation Representative Setsuyo Yokochi 4, Agent address 15-13-5, Usagano-cho, Kita-ku, Osaka City Date of amendment order Contents of voluntary amendment (1) Scope of claims Paragraph 1 amend the description as shown in the attached sheet, and delete paragraph 3. (2) "To the balance" on page 2, line 8 of the specification is amended to read "to the balance." (3) On page 2, line 19 of the specification, the phrase ``Add and remove the sample very carefully'' should be amended to ``Add and remove the sample very carefully.'' (4) Delete "You must add or remove the sample" from page 2, line 20 of the specification box to page 3, line 1. (5) On page 3, line 4 of the specification box, ``The purpose of the present invention is'' is amended to ``The purpose of the present invention is''. (6) Correct "the above setting value" on page 3, line 15 of the statement box to "the above plurality of setting values". (7) Statement box, page 4, line 12 [stored in memory 7]. " is corrected to "stored in memory 7." (8) From line 16 to line 17 on page 4 of the specification, the phrase "elements A, B, -, F, G" is corrected to "elements A, B, -, F, G." (9) ``Illegal spacing'' on page 5, line 10 of the statement box.
I corrected it by saying ``spacer, etc.''. 00) On page 6, line 15 of the statement box, does it mean "if they match" instead of "if they match"? ili correct. ql) In the 4th line of page 8 of the specification section, change the phrase ``I worship 5'' to ``5.
O. In the 12th line of page 8 of the specification, the phrase "value plus 3.4" is corrected to "value plus 3.4." 09 Figure 2 of the drawing is corrected as shown in the attached sheet. Claims +11 Weighed value output means for outputting the weighed value of the load, setting means for setting a plurality of numerical values in stages, and the magnitude of the weighed value with respect to the plurality of setting values set by the setting means. a comparison means for comparing the relationship; a display element provided corresponding to the area divided by the U plate Ω setting value; and a display element drive means for selectively driving the display element by the output of the comparison means. 1iL on five-branched construction
An electronic balance with several dimensions. (2) The plurality of display elements are arranged in the order of the magnitude of the corresponding setting values of the plurality of display elements, and the area of the lighting surface of each display element is the largest for the central element, and starts from the center to both ends of the array. 2. The electronic balance according to claim 1, wherein the electronic balance becomes smaller toward the end. Figure 2 ABCDEFC7

Claims (3)

[Claims] (1) A weighed value output means for outputting a weighed value of a load, a setting means for setting a plurality of numerical values in stages, and a magnitude relationship of the weighed value with respect to multiple set values set by this setting means. an electronic balance, comprising a comparison means for comparing the values, a display element provided corresponding to an area divided by the set value, and a display element drive means for selectively driving the display element based on the output of the comparison means. (2) The plurality of display elements are arranged in the order of the magnitude of the corresponding setting values of the plurality of display elements, and the area of the lighting surface of each display element is the largest for the central element, and starts from the center to both ends of the array. 2. The electronic balance according to claim 1, wherein the electronic balance becomes smaller toward the end. (3) The size between the plurality of set values is set such that the size is smallest at the center and becomes larger toward both ends.
Electronic balance as described in section.