JPS59168326A - Electronic counting scale - Google Patents

Abstract

PURPOSE:To prevent the display of a unit weight, which is different from the unit weight under computation and which is the result of erroneous ten-key operation, by releasing the ten-key input when there is no setting-key operation during the operating period of a timer after the ten keys in a key input part are operated. CONSTITUTION:When ten keys 11 in a key input part 1 are operated, a timer in a control means 4 is operated, and the input value to the timer is displayed on a unit weight display device (a) in a display device 3. When the unit weight, a number, a tare weight, and the like are not set through setting keys 12 within the period of the timer, the inputs from the keys 11 are released. The unit weight display on the display device 3 becomes the past memorized unit weight based on the inputs from the keys 11 accompanied by the input from the key 12 again. Even though the ten keys are erroneously operated, the unit weight, which is different from the unit weight under computation, is not made to remain, and troubles such as erroneous recognition of the unit weight can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electronic counting scale that can automatically cancel a numeric display based on an erroneous operation using a numeric keypad.

<Prior art> Conventionally, electronic counting scales use a numeric keypad, decimal point key, clear key, etc. to set the number of samples of an article, tare, etc., and set the number by pressing the keys, and then press the various setting keys to set the number of items. Weight (hereinafter referred to as unit weight), number of samples,
The tare shape, etc. are displayed numerically.

This numeric keypad is used to display various numbers as well as a unit weight display. In other words, when the unit weight display that normally displays unit weight is entered using the numeric keypad, all numbers other than unit weight -1 will be displayed on this unit weight display, and the setting key is turned on. Up to this point, the numeric value continues to be displayed, and further input that may be added using the numeric keypad is accepted.

<Problems with the prior art> However, with such conventional electronic counting scales, if you accidentally touch the numeric keypad during counting and turn it on, the manual value of that key will not match the correctly placed unit weight on the unit weight display. As a result, the actual unit weight of the item being counted differs from the value displayed on the unit weight display. This causes a problem of misunderstanding the unit weight. It should be noted that such an erroneous operation using the numeric keypad will only change the display and will not affect calculations such as the number of pieces based on the set unit weight unless manual input is subsequently performed using the setting keys.

(Purpose of the Invention) The present invention has been made to solve such problems, and if a predetermined time elapses after the numerical value is displayed manually using the numeric keypad, but the setting keys are not pressed all the time, the numerical value will not be displayed. An object of the present invention is to provide an electronic counting scale that cancels the display and displays the normal display contents of the display.

<Summary of the Invention> FIG. 1 is an overall configuration diagram clearly showing the configuration of the present invention.

The electronic counting scale of the present invention includes a key manual section 1 having a numeric keypad 11, a setting key 12, etc., a weight detecting section 2 having a weight sensor 21, an analog/digital converter 22, etc., and usually includes a number of pieces, a weight, a unit weight, etc. Display I7, numeric keypad 11
If there is an input, the display means 3 that displays the input data as a numeric value and the timer are activated after the input using the numeric keypad 11. If there is no input from the setting key 12 within the timer activation set time, only the input from the numeric keypad 11 is activated. The control means 4 is provided with a control means 4 for canceling the setting value and causing the display means 6 to re-display the value stored by the input of the numeric keypad 11 accompanied by the previous input of the setting key 120 as the set value.

<Embodiment> FIG. 2 is a block diagram showing an embodiment of the present invention.

In the same figure, the key input unit 1 has setting keys 12 such as a numeric keypad (including a decimal point key, clear key C, etc.) 11, a single throw key 121, a side key 122, a wind key 123, etc. The numeric keypad 11 is used for setting the number of pieces, taring, etc., and the numeric keypad manually inputs a number signal to the pass line 45 via the input port 46 of the control means 4. Setting signals such as weight are also given to the pass line 45.

The weight detection section 2 includes a quantity sensor 21, an analog/digital converter 22, and the like.

The weight 1-I=/su 21 is, for example, a load cell, which is attached with a weighing pan (not shown) on which the article is placed, detects the weight of the article, and converts the analog weight signal into an analog-to-digital converter (A/D converter). )221C is given. The A/D converter 22 converts the analog value into a digital value and supplies it to the pass line 45 via the input port 46 of the control means 4.

The display means 3 includes, for example, a T-piece type number display 31, weight display 32, unit weight display 33, etc. Each display is driven by a display driver 311, 321, 331, etc., and displays the number and weight value. , unit weight, etc.

The control means 4 is, for example, a central processing unit (cPU)'40,
Read-only memory IJ (ROM) 41, read/write memory 'J (RAM) 42, input/output board 43.44. It is composed of a microcomputer, etc., including a pass line 45, an input port 46, and the like.

The ROM 41 stores the control program 1 of the CPU 4o, which includes a processing program for automatically canceling the number of entries caused by erroneous operation of the numeric keypad 11. The RAM 42 stores input data such as unit weight, number of samples, tare weight, etc. from the key human power section 1, the weight of the weight sensor 21, and calculation results of the CPU 40. The input/output boats 45 and 44 are connected to a display means 6, a printer 5, etc., respectively. The input port 46 is connected to the A/D converter 22, and the path line 45 connected to the key power unit 1 includes an address bus line, a data bus line, a control path line, etc. for connecting these.

The printer 5 prints one volume of goods on labels, receipts, etc., and the print driver 51
, a printing mechanism 52, and the like.

Using the electronic counting scale based on the above configuration, the numeric keypad 11
Sample settings, tare subtraction, etc. will be explained using the numeric display by inputting , and the setting display by manual input of the setting key 12.

Sample setting methods include the unit weight setting force method, which is used when the unit weight of the article is known in advance, and the number setting force method, which is used when the unit weight of the article is unknown. In other words, in the unit weight setting force formula, first press the numeric keys 0 to 9 (and decimal point key).
Enter the unit weight value, and display the set number blinking on the unit weight display 36. Next, press the unit weight key 121 and press the unit weight display 33.
Fixed display of 0 setting value. In the number setting force method, first, a fixed number of samples are placed on a weighing pan, and the total weight of the samples is displayed on the weight display 32. Next, the number of samples is entered using the numeric keys 0 to 9, and the set number is displayed blinking on the unit weight display 63. Next, the thin film key 122 is pressed to display the average weight per piece on the unit weight display 3B and the number of samples on the number display 61.

There are two methods of tare subtraction: set-based tare subtraction, which is performed when the weight of the tare is known in advance, and actual tare subtraction, which is performed when the weight of the tare is unknown. That is, in tare subtraction by a set amount, first, the weight of the tare is entered using the numeric keys 0 to 9 (and the decimal point key), and the entered value is displayed blinking on the unit weight display 36. Next, the wind setting key 12
When 6 is pressed, the set value is shifted to the weight display 52 and displayed on the display 32 along with a minus sign. To tare the actual moon, place the tare on the weighing pan and press the tare key ([7
), no operation of the numeric keypad 11 is required.

FIG. 6 is an overall processing flowchart for the operation of this embodiment, and FIG. 4 is a detailed flowchart for the key manual processing. In addition, P□～PIO in the figure
and steps P81 to P48 are executed.

First, at P□ in FIG. 6, each article is inputted from the A/D converter 22.

At P2, determine whether the key is ON or not, and if YES, go to P8.
The key is to go to manual processing.

The details of this key manual processing are as follows at <P8□ in FIG. 4, where it is determined whether or not the numeric keypad 11 is being pressed. If YES, the process goes to P82. P, the value corresponding to ON of the numeric keypad 11 is stored in the display memory of the RAM 42. PH1
Then, a predetermined value (for example, a value corresponding to 5 seconds) is set in the timer counter provided in the RAM 42, and this value is set as the timer operation setting time. At Pl4, the display memory value is displayed on the unit weight display 35.

If NO at P8□, press clear key C or single throw key 121.
, the setting keys 12 such as the membrane key 122 and the wind setting key 123.
It sequentially determines whether or not the button, etc., have been pressed, and performs predetermined processing.

At P, it is determined whether the clear key C is ON or not. If YES, the process goes to P86, where the display memory is cleared to zero, and at P14, the unit weight display 33 displays zero.

At P87, it is determined whether the single throw key 121 is ON or not, and YE
If S, go to pis. The display memory value is stored in the unit weight memory in the RAM 42 at PH1, and the unit weight is subsequently displayed on the unit weight display 33 at PH4.

At PH9, determine whether the thin membrane key 122 is ON or not, and select YE.
In the case of S, the unit weight is calculated using the formula unit weight 2 in/display memory value in P2O, the unit weight is stored in the unit weight memory and display memory in P4□, and the unit weight is displayed in P14. displayed on the display 63.

At P4!2, the wind installation key 126 determines whether it is ON or not,
If YES, then P4O sets the display memory value to 0.
If YES (=zero), return the tare subtraction to its original state Bl! (Cancel tare subtraction). That is, in P44, the tare memory in the RAM 42 is cleared to zero, and in P45, the tare weight setting lamp (not shown) is turned off. Next, at Pl4, the unit weight display 35 continues to display zero. If the display memory value is not 0 but NO at P4O, it is necessary to perform pIA and bag removal processing, so the display memory value is stored in the tare memory, and the display memory is cleared to zero at P47. At P4O, turn on the tare lamp,
At Pl4, zero is displayed on the single N display 63.

In FIG. 3, return from key manual processing at P8 to Pl,
If a negative determination is made in P2, the net weight is calculated and stored by subtracting the tare weight in P4, and the net weight is displayed on the multiphase display 32.

At P5, the number of articles is calculated and stored from the unit weight and net weight, and the number is displayed on the number display 61.

At P6, it is determined whether the timer operation setting time set at pas or P described later has elapsed, that is, whether the timer counter value has become zero, and YES is determined.
In the case of (time up) K tr, t, P7, ps
s or the unit weight memory value stored in P41 is stored in the display memory. At P8, the display memory value is displayed on the unit weight display 63.

In this way, after 11 numeric keys are pressed, 12 single-throw keys will be pressed until the timer counter reaches zero (time up).
1. If any setting key 12 of the side keys 122 is not turned on, when the timer counter value reaches zero (time-up), the number manually entered on the numeric keypad will be erased from the display memory, and before that, the single-throw key 121, By turning on the setting key 12 such as the setting key 122, the value stored in the unit weight memory becomes the display memory value and is displayed on the unit weight display 35.

At P, the predetermined value is set in the timer counter again and the process returns to P□ (this step P9 may be omitted).

At P6, if the timer counter value is not 0 but NO, it goes to pto and the timer counter counts down (-1
) and press 1 on the numeric keypad until the timer counter value reaches 0.
The number of units placed by one person is displayed on the unit weight display 63.

In addition, if there is no manual power on the setting keys within the timer activation setting time, the number set using only manual power on the numeric keys will be canceled and the value memorized using the manual power on the numeric keys along with the previous setting key manual power will be changed.
It can also be displayed again on the unit weight display 3. moreover,
The number display using the numeric keypad 11 can also be performed using the number display 61 or the like instead of the unit weight display 63.

<Effects of the Invention> Based on the above explanation, the electronic counting scale of the present invention displays the number of cylinders input using the numeric keypad using the display means, but after the numeric keypad is entered, the timer is activated and the timer is set within the timer activation time. If you don't have a large key, you will be able to cancel the settings made using only the manual input of the numeric keypad and re-display the values previously memorized using the manual input of the numeric keypad together with the manual input of the numeric keypad. Touch the numeric keypad to turn it on, and even if the incorrect input is displayed by the display means,
After a predetermined period of time has elapsed, the numerical display is canceled and the normal display contents of the display means can be displayed.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of the present invention, FIG. 2 is an embodiment diagram of the present invention, and FIG. 3 is an overall flowchart illustrating the operation of the embodiment. Figure @4 is a detailed flowchart of the key manual processing in Figure 3. 1... Key human power department, 11... Numeric keypad, 12...
Setting key, 2... Weight detection section, 21... Weight sensor, 22... A/D converter, 6... Display means, 4
...control means. Figure 17, Figure 3 Figure 4

Claims (2)

[Claims] (1) A sub-counting scale consisting of a key manual section having a numeric keypad, various setting keys, etc., a weight detection section, and a display means, which operates a timer after the numeric keypad is manually operated, and sets the timer within the set timer operation time. This electronic counting scale is equipped with a control means that cancels the number setting made only by the manual input of the numeric keypad when there is no key manual input, and causes the display unit to re-display the value stored by the previous setting key manual input and the numeric keypad manual input. (2) The above control means activates the timer after the numeric keypad is manually operated, and if there is no setting key manual power within the timer activation set time, the number setting by the numeric keypad only is canceled, and the numeric keypad that was previously set by the numeric keypad human power is canceled. The electronic counting scale according to claim 1, wherein the values of items normally displayed on the display means are re-displayed among the values stored manually.