JPS5937425A - Multimode electronic balance - Google Patents

Abstract

PURPOSE:To deal with the weighing functions of multiple modes with one unit of balance body, by exchanging the ROMs stored therein with control programs for each of the modes of the balance according to modes, and exchanging the ''key'' in a display part and key input part as well. CONSTITUTION:A central processing unit (CPU) 3 controls a weight detection part 1, a display part 10, a key input part 20 and a printer 5 according to the programs stored in an ROM 30, and processes information. The functions thereof can be roughly classified to key processing and weight data processing. More specifically, the weight data are processed according to the kinds of balances by the instruction from the part 20 in the CPU 3, and the results thereof are displayed on the part 10. It is also possible to print the results with the printer 5 if necessary. When the mode of the balance is changed by exchanging the ROM 30, the contents of designation and the functions in the respective display columns in the part 10 and the respective keys in the part 20 of a display input device 2 vary with the mode as well and therefor the ''key'' is changed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multimode electronic scale that can be used as an electronic scale in a plurality of modes with one scale body.

There are various types of electronic scales, such as weight scales, weight percent error scales, and counting scales, each of which uses weighing as its basic operation, and although most of the parts can be shared, the functions of the keys in the human power section and the information displayed on the display are different. The method of processing the ≦ term and detected superimposed data is slightly different, and each scale is controlled by a ROM and CPU with a dedicated program, and each has its own display and input. Since the product was designed and manufactured separately, it had the disadvantage of high product cost.

This invention was proposed in view of the above-mentioned conventional circumstances, and an object of the present invention is to obtain a multi-mode electronic scale that can be easily rearranged into many types of scale modes in one unit, thereby eliminating the drawbacks of the conventional scale. It is.

This invention enables the ROM storing the control program for each mode of the scale to be exchanged depending on the mode of the scale, and also allows the "headings" of the display section and the key input section to be exchanged, so that a single scale body can be used. The main feature is that it can support multiple mode weighing functions, and will be explained in more detail below.

FIG. 1(a) shows an overall perspective view of a general electronic scale, in which a display input device 2 is disposed at the upper end of a column erected from the front end of a weight detection unit l, and the display input Device 2
The display section 10 and the key manual section 20 are shown in Fig. 1(b).
′.

The display section 10 is provided with, for example, three display columns 11, 12, and 13, and the display content varies depending on the mode of the scale described below, but basically one of the three (in this case, the middle column ) displays the weight data from the weight detection unit 1, and the other one (in this case, the bottom column) displays the key manual data from the numeric keypad of the input unit 20. However, the simple weight scale described later has only one display column, and the display of weight data from the weight detection section 1 and the display of data from the key manual section 2o can be changed at any time by key operation. .

The key manual section 20 includes a numeric keypad and function keys K.
18 is arranged at O-, and the functions of the function keys differ depending on the mode as described below.

FIG. 2 shows the electrical functions of such an electronic scale as a block diagram, and FIG. 3 shows the basic operation as a flow chart. Second
In FIG. 3, a central processing unit (CPU) 3 controls the weight detection unit 1, display unit 1O, key power unit 20, printer 5 according to a program stored in a ROM (read-only memory 30), and also controls information Its functions are key processing F1 and weight data processing F2 as shown in Figure 3.
It can be broadly classified into. In other words, the weight data is CP
At U3, processing is performed according to the type of scale according to instructions from the key human power section 20, and the results are displayed on the display section 1o, and can also be printed out using the printer 5 if necessary. The fragile (random access memory) 4 stores data necessary for processing the weight data.

In the above basic configuration, programs can be stored in the ROM 30 according to the purpose. Therefore, by preparing various ROMs 30 corresponding to each mode of the scale illustrated below, it is possible to store programs according to the user's requests. The manufacturer can select an appropriate ROM.

Examples of the above-mentioned modes of Pp include the following.

■ Weight scale: Subtracts a preset tare weight from the gross weight to calculate and display the net Mtffi.

(3) ・■ Weight % error car Two items can be set in advance with an allowable range of one view, and if the range is above or below that range, it can be displayed (
A warning is issued by means such as flashing the threshold display.

■ Two sets of price scales! The net weight is determined by subtracting the tare weight from the melon, and the price of the item is determined from the unit price registered in advance.

■ Piece counting scale: Divide the weight by the unit weight to calculate the number of items on the scale.

■ Simple weighing scale 2 Functionally, it is almost the same as ■, but
A battery is used as the driving power source for the display section, and as will be described later, the only display field is the mold temperature display field.

When the mode of the scale is changed by replacing the ROM as shown in this I, each display field 11 of the display section lO of the display input device 2,
12.13 and key Since the notation and function of each key of the human power unit 20 will differ depending on the mode, each display @11.
It is necessary to change the notation of 12.13 and each key KO to IC1g, that is, the "heading". Therefore, a heading sheet 31 made of synthetic resin or the like is printed with a "heading" at the position corresponding to 1B in each display field 11, 12, 13 of the display section 10 of the display input device 2 and each key KO~ of the key manual section 2°. RO for each mode
It is designed to be reattached to fit the M30.

FIG. 4(a) shows the heading sheet 31 regarding the price scale, and the positions corresponding to each display 111, 12, and 13 are surrounded by colored bands, and some of them are made thicker to indicate ``price'' and ``price''. Headings such as weight, unit price, etc. are printed. In addition, the index sheet was left transparent only for the numerical display part so that the numerical display could be seen visually. Also each key KONK1
At the position corresponding to g, the shape of the key and its "heading" are printed, for example, numbers 0 to 9 are printed on a numeric keypad, and characters such as "tare", "wind set", and "zero" are printed on a function key. There is. Further, FIG. 4(b) shows a heading sheet for a simple weight scale, and only the heading of the weight column, ie, "weight" is printed on the display section 10.

Table 1 shows examples of the "headings" of the display contents of each display column 11, 12, 13 of the display section 10 for each mode and scale, and Table 2 shows examples of the "headings" of the display contents of each display column 11, 12, 13 of the display section 10 for each mode. This is a table showing an example of the "heading" of the function 18), and the heading sheet 31 as described above is prepared for each mode of each scale, following the examples shown in Tables 1 and 2. In addition, each time the ROM is replaced, the heading sheet 31 is also replaced.

Note that an X mark in Table 2 means that the key is not used. Therefore, for example, as shown by the dashed lines in Fig. 4(a) and (b), those parts of the heading sheet are colored opaque without printing headings, and the keys that are not used are covered. The same applies to the headings on the display section in FIG. 4(b).

FIG. 4(c) shows a state in which the sheet shown in FIG. 4(b) is attached to the front surface of the display input device 2 shown in FIG. 1(b). The keys (K2, K
5, K8, KIO1, K16, and K17), and of course the position of each key and the "heading" of the key drawn on the heading sheet 31 are made to match. However, part B on the right end of the figure is the unused key (key 1 (lo)).
), and this part B is a "heading".
is covered by the unprinted heading sheet) 31. Then, even if an unused key is turned on, it is programmed to be ignored, so that no problem will occur even if the unused key is turned on by mistake.

Table 3 summarizes the functions of each key of the multi-mode electronic scale configured in this way, and Figure 5 shows the key processing Fl in Figure 3 in more detail by corresponding it to Table 3. It is expressed. ■■...Φ in Table 3 and <, SS diagrams correspond to the types of VP mentioned above.

The case where the display+'flE10 and the key human power section 20 are incorporated on the same board has been explained above, but in a general commercial case, the display section 10 and the key human power section 20 are separated. In this case, the above objective can also be achieved by creating a heading sheet for each.

The above delivery applies not only to general scales but also to combination scales. A combination scale is a device that combines multiple weighed weights (or counted numbers) to obtain a fixed weight (or number of items), and takes out a hopper equipped with a weight detection unit in which the items are dispersed and placed in small quantities. Multiple pieces are installed above the mouth, and the CPU determines which of them, when combined, produces a weight (number) within the set upper and lower limits and equal to the set target weight (number), or This is a device that can open the hopper and take out items of the desired weight j1 (number of items) according to a calculated combination that yields the closest weight (number of items). FIG. 6 shows the basic configuration of the combination weighing device, in which the outputs of the plurality of weight detection units 1a...in are sequentially stored in the RAM 4 via the multiplexer 6 and the interface 7, and are stored in the CPU 3'.
The appropriate combination is calculated using the ROM 30, and it is possible to select whether to operate as a combination weighing scale or a combination counting scale by replacing the ROM 30.

FIG. 7 shows an example of the display input device 2 of a combination weighing device, and when used as any weighing device, the display field in the center of the display section 10 is set as the target value display field 12.
An upper limit display field 11' and a lower limit display field 13 are provided above and below. Key 14 is a key necessary for setting the upper limit value of weight or number of pieces, and key 15 is a key necessary for setting the lower limit value of weight or number of pieces. The keys 21 and 22 are used to switch between a state in which upper limit values, lower limit values, and target values for weight or number of pieces can be set, and a state in which actual weighing calculations are performed. In addition, the key 19 is necessary to set the target value for weight or number of pieces, and when used as a combination counting scale, a unit weight display field 14' is provided, and the key 20 is used to set the unit weight. There is.

(Dotted line in Figure 7) Furthermore, the "Heading" of the display section 10' and the key input section 20'
This is done using the heading sheet 31, and examples of headings for each key are shown in Table 4. For example, in the case of a combination counting scale, the "headings" on the display section 10' are "upper limit number,""targetnumber,""lower limit number," and "unit weight," from the top.

Table 6 summarizes the above descriptions.

(,・Artificial T group <1) Table 1 Table 3 Heading Function KO123m Numerical value is displayed in the bottom column or middle column (0 digit display column ■ Lower limit 456 display 11 ■ Unit price display 1 ■ Unit weight display column 0 Weight display
789 column) and flash it. However, 100・■ has no flushing.

Store the weight in the weight display column as the tare weight, and
Wind Displayed in the tare display column (for ■, weight is displayed)
ig rear).

K12 Zero zero point correction.
Fla bottom column or middle column (Ko~KIG brackets Kts Clear and leave blank) -F14 Display weight after 1 hour.

■ Enter the contents of the upper and lower limits (unit weight) display column into the upper limit (number of pieces) table.
4 Display it in this column and store it as the upper limit (number) weight FIIS■Fly, and clear the lower limit (single 'IL) display column and leave it blank. However, if the lower limit (unit weight) has already been set and stored, it will be recalled and displayed.
Stop flushing in this column and lower limit (unit weight)
Store it as K16.

The value displayed in the lower column (see parentheses for KO-KIO) is stored as the tare weight, and the tare weight is set in the upper column (■
(only) displayed as tare weight. Reset the bottom column to F17 and leave it blank. However, if the lower limit (unit weight) has already been set and stored, it will be recalled and displayed.

Combining Table 4 and Table 5 [F] As explained above, this invention is achieved by exchanging the ROM storing the control program and the "heading" of the display input device according to the mode of the scale. , it is possible to realize a scale with multiple modes with a single scale body, and there are no manufacturing changes associated with changing the scale mode, which makes standardization easier and has the advantage of lowering manufacturing costs. .

[Brief explanation of the drawing]

FIG. 1(a) is an overall perspective view of the electronic scale, FIG. 1(b) is an enlarged view of the display input device, FIG. 2 is a block diagram of the electronic scale, and FIG.
The figure is a flowchart of the electronic scale, Figure 4 (a) and (b)
4(C) is an example of a heading sheet, and FIG. 4(C) is an example of a heading sheet.
)), FIG. 5 is a more detailed flowchart of key processing, FIG. 6 is a basic circuit of the combination weigher, and FIG. 7 is a display input device of the combination weigher. In the figure, 80.80'...ROM, 81...Heading sheet. 143- Procedural amendment (spontaneous) December 1987 Patent Application No. 148742 2 Title of invention Multi-mode electronic scale 3 Relationship to the person making the amendment Case Applicant address Sakyo-ku, Kyoto City Goin Sanno-cho 44E, (4i9 Co., Ltd. Ishida Kouki Seisakusho Representative Ishi 1) Takashi - 4゛ Agent 〒540 8, Contents of amendment

Claims (1)

[Claims] (1) A ROM in which the control program for the scale is stored is prepared for each mode of the scale, and the ROM can be replaced according to the mode of the scale. A multi-mode electronic scale that is characterized by the ability to exchange