JPH03249524A - Weighing device - Google Patents

Abstract

PURPOSE:To speed up a charge calculating process and to make a counting process accurate by performing the charge calculation based upon data after a rounding process and finding unit weight from data before the process by a weighing device main body which has a rounding process function at a scale part. CONSTITUTION:The scale part 5 rounds the weight of an object body to a minimum display unit and sends the weight data after the process and weight data before the process to the weighing device main body 1. When a charge calculation mode is selected with a mode selection key 2c, the main body 1 calculates the charge form the data after the process and displays the result on display units 3 and 8. When a counting mode is selected with the mode switching key 2c, the main body 1 finds the unit weight from the data before the process and calculates and displays the quantity of measured bodies on the display units 3 and 8. Consequently, the charge calculation is speeded up and the accuracy of the counting process is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a weighing device used in postage scales and the like.

[Prior Art] Conventionally, a weighing device, a so-called postage scale, that calculates postage by weighing the weight of a mail item such as a sealed letter or a parcel has been equipped with a weighing unit equipped with an electronic weight sensor such as a load cell. and a weighing device that takes in the weight data of the mail weighed by this weighing section, calculates the corresponding postage charges, and displays it on the display, and connects the two with a signal cable. (known as ρ).Also, it can be used as a weighing device, a so-called label printing machine, that measures the weight of products sold by weight and issues a label, and the weighing unit and the main body are separated and the two are connected by a signal cable. There is something connected.

In conventional weighing devices in which the weighing section and the main body are separated, the weighing section is equipped with a weight data rounding function, and only the weight data after rounding is sent from the weighing section. It was supposed to be sent to the weighing device itself.

By doing so, there is an advantage that the weighing device main body and the weighing section can be used independently.

By the way, some measuring devices are equipped with a counting function. This function calculates the unit weight of each object to be weighed by 11F.
This function calculates the number of objects to be weighed based on the weight value at that time and the above-mentioned unit weight. Therefore, in the counting process, it is necessary to calculate the unit weight using weight data before rounding.

[Problems to be Solved by the Invention] However, in conventional weighing devices in which the weighing section and the weighing device main body are provided separately, only the weight data after the fitting process is given to the main body, so the counting process is difficult. The unit weight is calculated from the weight data after rounding,
There was a drawback that the number could not be calculated accurately.

Therefore, the present invention makes it possible to transmit weight data before rounding from a weighing unit that has a rounding function and can be used alone, and calculates unit weight from the weight data before rounding during counting process. The present invention aims to provide a weighing device that can improve the accuracy of counting processing.

[Means for Solving the Problems] The present invention includes a scale unit that measures the weight of an object to be weighed, and a charge that corresponds to the weight of the object weighed by the scale unit and is displayed on a display. In a weighing device that is provided separately from the weighing device main body, the weighing section includes a rounding means for rounding the weight of the object to be measured to the minimum display (11th place) on the display, and a weight rounded by this means. The weighing device includes a mode switching means for switching between a charge calculation mode and a counting mode, and a charge calculation means using the mode switching means. When the mode is selected, the charge calculation processing means calculates the charge based on the weight data after rounding and displays it on the display, and when the counting mode is selected by the mode switching means, the weight before rounding It is equipped with a counting processing means for determining the unit weight based on the data, calculating the number of objects to be weighed, and displaying the result on a display.

[Function] With the present invention having such a configuration, when the weighing of the object to be weighed is performed in the weighing section, the weight data is rounded, and the data after rounding and the data before rounding are transferred to the cable. It is sent to the weighing device main body via. In the weighing device itself, when data is received from the weighing section via the cable, in charge calculation mode, the charge is calculated from the rounded data and displayed on the display, and in counting mode, the charge is rounded and displayed on the display. The unit weight is determined from the data before processing, and the number of objects to be weighed is calculated and displayed on the display.

[Example 1] Hereinafter, an example in which the present invention is applied to the postage scale system shown in FIG. 1 will be described with reference to the drawings.

In FIG. 1] is the main body of the weighing device, and the keyboard 2 has various keys such as a numeric keypad 2a, a certificate stamp issuing key 2b, a mode switching key 2c for switching between 14-karat gold calculation mode and counting mode on the front of the housing. A main body display 3 is attached to the upper part of the casing for displaying the weight value of the mail, postage, etc. The measuring device main body 1 can be operated by connecting the power plug 4 to a commercial power outlet and receiving power.

Reference numeral 5 denotes a glance section equipped with a load cell as an electronic weight sensor, and a liquid crystal display panel 6 for weight display is provided on the front surface. The scale section 5 and the weighing device main body 1 are connected by a cable 7 consisting of a power supply line and a data signal line.

Further, a customer display 8 and a certificate stamp issuing machine 9 having the same configuration as the main body display 3 are detachably connected to the weighing device main body 1, respectively.

The main unit display 3 and the customer display 8 both have a weight of 3.5 kg, and 0 to 20 g in 0.2 g increments, 20 to 40 g.
0g in 0.5g units, 400 to 35,000g in Log
Display each unit.

FIG. 2 is a block diagram of the weighing section 5. As shown in FIG.

As shown in the figure, the program R
A memory section 13 consisting of OM, data RAM, etc., an A/D (analog/digital) converter which converts the analog output from the load cell 15 amplified by the amplifier 14 into a digital count value] 6, and the liquid crystal display board 6. Display controller 17 that performs drive control to display weight
, a communication interface 1 that controls data transmission between the measuring device main body 1 and the data signal line 18;
9 are connected to each other.

FIG. 3 is a block diagram of the measuring device main body 1. As shown in FIG.

As shown in the figure, c p v'D constituting the main body of the control section
1 through the buffer 22, the ROM and RAM
A display controller 24 that drives and controls the main body display 3, a keyboard controller 25 to which key signals are input from the keyboard 2, and a data signal line 18 that is connected to the scale section 5. a communication interface 26 that controls data transmission, a display interface 27 to which the customer display 8 is electrically connected;
A certificate stamp issuing machine interface 28 to which the certificate stamp issuing machine 9 is electrically connected is connected to each of the certificate stamp issuing machine interfaces 28 .

Therefore, when the load cell 15 weighs the object to be weighed, the CPU II of the weighing section 5 reads the ROM of the memory section 13.
The computer is configured to execute the processing shown in FIG. 4 based on a program stored in the computer. That is, when the load cell] 5 detects that the object to be weighed has been weighed, it takes in the scale data, that is, takes in the weight count value data A output from the A/D converter 16. and,
After performing normal flicker prevention processing on this weight count value data A, rounding processing is performed. Note that one count of the count value after the flickering process corresponds to 0.02 g. That is, the weight count value data A is 1.
．． 000 counts (equivalent to 20g) or less, or 1.001
3 between counts and 20,000 counts (equivalent to 400g) or greater than 20,000 counts
Check the stage, if it is 2,000 counts or less, round it up to 0.2g units, if it is 1,001 counts to 20,000 counts, round it to 0,5g units, and if it is more than 20,000 counts, it will be rounded up to 0.2g units. If so, round it up to 10g units (rounding means). Then, the durum weight data obtained through this rounding process is displayed on the liquid crystal display board 6.
to be displayed.

In addition, the count value data obtained in the flickering process before the rounding process is incorporated together with the durum weight data after the rounding process, and is sent to the weighing device main body 1 according to the communication interface 19 (data sending means). Finish the process.

On the other hand, the CPU 21 of the weighing device main body 1 is configured to execute the process shown in FIG. That is, a key-in on the keyboard 2 is checked via the keyboard controller 25, and if a key-in has been performed, key processing corresponding to that person's key is executed. If the key-in has not been performed, the communication interface 26 checks to see if a confirmation text has been received from the weighing unit 5, and if so, the currently selected business mode is checked. Here, if the charge calculation mote is selected by key operation of the moto switching key 20, the postage is calculated based on the Durham weight data after rounding of the received text, and the postage and Durham weight data are combined. are displayed on the main body display 3 and the customer display 8, respectively (charge calculation processing means).

On the other hand, if the counting mode is selected by operating the mode switching key 20, it is checked whether the current pig is a sample of the object to be counted or not. If the data is a sample, data on the unit weight of the object to be counted is calculated based on the count value data before rounding of the received text, and is stored in the RAM of the memory section 23. On the other hand, if the data is the current data or the data of the object to be counted, the quantity is calculated from the count value data before rounding of the received text and the stored unit weight data, and this quantity is displayed on the main body display. 3 and the customer display 8 (counting processing means).

In this embodiment configured as described above, when calculating the postage of a mail item, the mode switching key 2C on the keyboard 2 of the weighing device main body 1 is operated to select the charge calculation mode. In this state, the weighing section 5 weighs the mail. Then, in the weighing section 5, the load cell 15
The weight count value data corresponding to the output of is captured,
Flickering processing and rounding processing in the minimum display unit are performed. The weight data after the rounding process and the count value data before the rounding process are combined into the same communication text and transmitted.

On the other hand, in the weighing device main body 1 which has received the communication text from the weighing section 5, since the charge calculation mode is selected, the postage is calculated from the rounded weight data in the communication text, and this postage and The weight is displayed on the main body display 3 and the customer display 8. At this time, by operating the certificate stamp issuing key 2b on the keyboard 2, the certificate stamp issuing machine 9 issues a certificate stamp for the postage.

Further, when calculating the number of objects to be counted, the counting mode is selected by operating the mote switching key 2C. In this state, first, for example, one sample of the object to be counted is taken out, and the weighing section 5 weighs this sample. In addition, the number of samples (in this case, "1") is input by operating the numeric keypad 2a on the keyboard 2 of the weighing device main body 1. Then, in the weighing section 5, the weight data after the rounding process and the count value data before the rounding process for the sample are combined into the same communication text and transmitted in the same manner as described above. On the other hand, in the weighing device main body 1, the unit weight per sample is determined from the count value data before rounding in the received communication text and is stored in the memory. Thereafter, the weighing section 5 weighs the object to be counted. By doing this, in the weighing device main body 1, the number of objects to be counted is calculated from the count value data and unit weight data at this time, and displayed on the main body display 3 and the customer display 8.

As described above, since the weighing section 5 is provided with a rounding processing function, the weighing section 5 can be used alone by providing the liquid crystal display 6 that can display the weight data after the rounding processing. Moreover, since the weighing device main body 1 calculates the postage based on the weight data rounded by the weighing section 5, the load is reduced and high-speed processing is possible.

In this embodiment, the weighing section 5 transmits the count value data before rounding together with the weight data after rounding, and in the counting mode, each sample is calculated based on the count value data before rounding. The unit weight of is calculated. Therefore, the count value after flicker processing is 1
Assuming that the count corresponds to 0.02g, the unit weight is calculated and set to a minimum value of 0.02g. Therefore, since one count is 0.02g, o, o
A counting function with a counting error of i can be performed, and counting processing can be performed with high precision.

By the way, if there is a change in the minimum display unit of the display 3.8, rounding processing is performed in the scale section 5 using the minimum display unit before the change, so the weight data after the rounding process becomes meaningless data. However, in this embodiment, the count value data before the rounding process is sent together with the weight data after the rounding process, so this can be handled by rounding the above count value data in the minimum display unit after the change in the weighing device main body 1. become able to. Generally, the weighing section 5 has one chip C.
Since the PU is used as a mask ROM, the configuration is inexpensive, and it is difficult to change the software. On the other hand, the software of the weighing device main body 1 can be easily changed to meet various demands. Therefore,
It can be said that changing the software of the weighing device main body 1 so that the count value data before the weighing unit 5 is rounded is the best solution that is simple, quick, and relatively inexpensive.

It should be noted that the present invention is not limited to a postage scale system, but can of course be applied to a weighing device in which the weighing section and the weighing device body are separate, such as a value label issuing machine. .

"Effects of the Invention" As detailed above, according to the present invention, there is provided a weighing section for measuring the weight of an object to be weighed, and a weighing section for calculating the fee corresponding to the weight of the object weighed by the weighing section. In a weighing device in which the weighing device body is provided separately from the weighing device body that is displayed on the display, the weighing section is provided with a rounding processing function so that it can be used alone.
In addition, we have made it possible to send unrounded data as well as weight data after rounding from this weighing unit to the weighing device, so when calculating charges, the data after rounding is used to calculate charges, reducing the load on the weighing device. It is possible to provide a weighing device that is easy to measure, enables high-speed processing, and improves the accuracy of counting by determining the unit weight from data before rounding during counting.

[Brief explanation of drawings]

The drawings are diagrams showing an embodiment of the present invention, in which Fig. 1 is a schematic diagram of a postage scale system, Fig. 2 is a block diagram of the weighing section, and Fig. 3 is a block diagram of the weighing device main body. FIG. 4 is a flowchart showing the operation of the weighing section according to the present invention, and FIG. 5 is a flowchart showing the operation of the weighing device main body according to the present invention. 1...Measuring device body, 2...Keyboard, 2c...
・Mode switching key 3...Main unit display, 5...Weighing section, 6...Liquid crystal display board, 8...Customer display, 9...
Certificate stamp issuing machine, 15...Load cell, 1Q, 26...
communication interface.

Claims (1)

[Scope of Claims] A weighing section that measures the weight of the object to be weighed and a weighing device main body that calculates and displays on a display a fee corresponding to the weight of the object weighed by the weighing section are separate. In the physically installed weighing device, the weighing section includes a rounding means for rounding the weight of the object to be measured to the minimum display unit of the display, and a weight data rounded by the means as well as a weight before rounding. data transmitting means for transmitting data to the metering device main body; the metering device main body includes a mode switching device for switching between a charge calculation mode and a counting mode; and a charge calculation mode is selected by the mode switching means. When a charge calculation processing means calculates a charge based on the weight data after the rounding process and displays it on the display, and when the counting mode is selected by the mode switching means, the charge calculation processing means calculates the charge based on the weight data after the rounding process, and when the counting mode is selected by the mode switching means, 1. A weighing device comprising: a counting processing means for determining the unit weight based on the weight of the object to be weighed, calculating the number of objects to be weighed, and displaying the calculated number on the display.