JPS5815879Y2 - Counting device in electronic digital display scales - Google Patents

Description

[Detailed description of the invention] This invention automatically calculates the number of objects by dividing the weight of the object by the unit weight by setting the unit weight on the scale.
The present invention relates to a counting device for an electronic digital display rod which has a function as a counting scale and is capable of adding up the number of objects to be measured and displaying the total number.

Recently, electronic scales have been widely used in place of mechanical frames, and these electronic scales convert the amount of mechanical displacement corresponding to the weight of the object to be weighed into an electrical signal using an A-D converter. In this type of converter, a large number of slits are formed on a slit chart at regular intervals along the mechanical displacement direction, and the slit chart and the light emitting element are moved relative to each other in accordance with the weight of the object to be weighed. and output a pulse signal each time the light emitted from the light emitting element passes through each slit, output a predetermined number of pulse signals corresponding to the weight from the converter, and count these pulse signals with a reversible counter. The weight is displayed digitally.

In addition, when using this type of scale to weigh many items of the same unit weight, if you set the unit weight of the items to be weighed on the scale in advance, the weight will be automatically set when you place the items on the scale. Some scales have the function of a counting scale that calculates and displays the number of objects placed on the scale by dividing the weight and the unit weight.

However, with conventional counting scales of this type, when the total weight of the objects to be weighed exceeds the maximum weight of the scale and it is necessary to weigh them in several batches, the number of pieces determined in the middle is memorized and the number of pieces at each weighing is accumulated. Since it does not have an adding function, it was not possible to calculate and display the total number of objects to be weighed.

Also, when weighing many types of objects with different unit weights, it is also not possible to automatically calculate and display the total number of objects to be weighed, since it is not possible to add up the number of objects for each weighing. could not.

This invention was made to eliminate the above-mentioned drawbacks, and its purpose is to provide a storage device that stores the total number of pieces obtained as a result of cumulatively adding up the number of pieces calculated for each weighing, and to calculate the number of pieces for each weighing. The total weight of the objects to be weighed can be calculated by adding the number of objects to be weighed and the contents of the storage device each time using an adding device to further calculate the total number, storing it in the storage device again, and displaying it on the display device. When calculating the total number by weighing very large items or many types of items with different unit weights, you can weigh them separately even if you are bankrupt, and the total number will be automatically displayed each time you weigh them. The present invention provides a counting device in an electronic digital display line.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In the figure, reference numeral 1 denotes a dividing device.The dividing device 1 has an A-D converter using a slit chart as described above that calculates the weight of the object when it is placed on the weighing pan of the scale. Weight pulse signal W (hereinafter referred to as weight pulse) outputted by
When weighing many items of the same weight as mentioned above at once, use the number key (for example, the number key for setting the unit price of an electronic scale) to set the weight per piece (unit weight) on the scale in advance. Also serves as

) is input.

The dividing device 1 divides the weight signal W of the object to be weighed by the unit weight signal U to calculate the number of weighed objects and sends it to the AND gate 6.

When the memory recall switch 12 is open, the AND gate 6 is opened via the inverter 10, and the quantity is sent to the number storage device 2 composed of a register or the like to be stored therein, and further sent to the display device 3 for display. It is made to be.

The contents (number) of the number storage device 2 are sent to the AND gate 8, and when the addition switch 11 is closed, the AND gate 8 is opened and the number is sent to the addition device 4 and stored.

The adding device 4 adds the above-mentioned number for each measurement to the contents (total number) of the total number storage device 5 that stores the total number of previous measurements, and stores the new total number in the total number storage device 5 again. , the contents (total number) of the total number storage device 5 are stored in the inverter 1 when the memory recall switch 12 is open.
Adder 4 via AND gate 9 opened via 0
is sent to and stored.

Therefore, as mentioned above, the adding device 4 adds the current number of weighing results inputted from the AND gate 8 and the total number of weighing results inputted up to that point from the AND gate 9, and obtains a new total number as a result. is sent again to the total number storage device 5 and its contents (total number) are held until the next time the memory recall switch 12 is closed.

Further, when it is desired to recall the contents of the total number storage device 5 and display the previous total number on the display device 3, when the memory recall switch 12 is closed, the AND gate I is opened, and the contents of the total number storage device 5 are transferred to the AND gate 1. The data is sent to the number storage device 2 via the storage device 2 and displayed on the display device 3, and the contents of the total number storage device 5 are erased.

The operation of the electronic digital display row counting device according to the present invention having the above-described structure will now be described.

When the electronic scale is completely electrically stable, such as when the display device 3 shows a complete zero after the power is turned on, the same unit weight that is to be weighed from a large number of times before the first weighing. Unit weight of the object to be measured (weight of one object to be measured) U
The unit price setting key (not shown) is operated to input the unit price into the division device 1 and store it.

Next, when a plurality of objects having the same unit weight are placed on the tray of an electronic scale, a weight signal W proportional to the weight is output from the A-D converter to the dividing device 1.

The dividing device 1 converts the weight W of the object to be measured at this time into a unit weight U.
Divide by to calculate the number of pieces, 81.

At this time, since the memory recall switch 12 is open, the AND gate 6 is open and the AND gate I is closed.

Therefore, the number 81 is sent to the number storage device 2 and stored therein, and is also sent to the display device 3 to be displayed.

Next, when the addition switch is operated to close the circuit, the AND gate 8 is opened and the number of pieces stored in the number storage device 2 is 8.
0 is sent to the adder 4 and stored.

By the way, at this time, since the content of the total number storage device 5 is, of course, zero, zero is sent to the addition device 4 via the AND gate 9.

Therefore, the adding device 4 adds the number 81 obtained from the first measurement and zero, and sends the result S1 to the total number storage device 5 to be stored therein.

Next, when weighing another item of the same type as the first weighing item, since the unit weight U is already set in the dividing device 1, the second item to be weighed is placed on the pan of the electronic scale. Then, the weight signal W is input to the division circuit 1 in exactly the same way, and the division circuit 1 calculates the number 82 by performing division.

The second number 82 is stored in the number storage device 2 and the AND gate 6.
The data is sent and stored via the display device 3, and is also displayed on the display device 3.

Next, when the addition switch 11 is operated to close the circuit, the AND gate 8 is opened and the number 82 is sent to the addition device 4.
The contents S1 of the total storage device 5 are added, and the result S1
+82 is sent again to the total number storage device 5 to be stored therein.

At this time, if you want to check the total number 81+82, operate the memory recall switch 12 to close the circuit, and the AND gate 7 will open and the AND gate 9 will close.
The data is sent to and stored, and is also displayed on the display device 3.

Further, since the AND gate 9 is closed, the contents (total number) S1+82 of the total number storage device 5 are erased.

When it is desired to repeat the same measurement and obtain a new total number, the addition switch is operated to open the AND gate 8 and the contents S1+S2 of the number storage device 2 are sent to the addition device 4.

Then, the adding device 4 adds the content zero of the total number storage device 5, whose content was previously erased, and the content S1+S2 of the number storage device 2, and the total number storage device 5 again has a total of 81+8.
2 is retained in memory.

After that, by repeating the necessary weighing operations in exactly the same way as the weighing described above, even if the total weight of the objects exceeds the maximum weighing capacity of the electronic scale, the total number of objects to be weighed can be calculated by dividing and weighing. .

Furthermore, when weighing many types of objects with different unit weights and finding the total number of them, it is of course possible to change the unit weights before weighing and then perform the same operation.

However, in addition to the above embodiments, if the number of objects to be weighed is known in advance, the unit weight can be set and the weight can be measured using an electronic scale and then divided using a number key etc. If the number can be added directly to the total number storage device, other embodiments may be considered which would be more convenient.In short, various modifications can be made without departing from the spirit of the present invention.

As described in detail above, when weighing a large number of objects with the same unit weight at once and automatically calculating and displaying the number, the present invention allows you to set the unit weight on the electronic scale and then calculate the weight of the object. The number of pieces is measured and divided by the unit weight, and the resulting number is stored in the total number storage device and displayed. Moreover, when continuing weighing, the contents of the storage device and the number obtained by newly weighing are stored. The new total number is stored again in the total number storage device and displayed on the display device, so even if the total weight of the weighed items exceeds the maximum weighing capacity of the electronic scale, the new total number can be stored several times. The total number can be displayed on the display device by adding up the number of objects calculated each time, or when weighing many types of objects with different unit weights and calculating the total number. However, if you set the unit weight according to the object to be weighed before weighing, you can easily repeat the measurement and the total number can be displayed at all times.

Furthermore, as mentioned above, by weighing 11 units of weight in several batches, there are various advantages, such as improving the precision of even an electronic scale, which has a constant precision.

[Brief explanation of the drawing]

The drawing is a block diagram showing the overall configuration of an embodiment of the present invention. 1... Division device, 3... Display device, 4
... Addition device, 5 ... Total number storage device.

Claims (1)

[Scope of utility model registration request] It has a dividing device that calculates the number of the objects to be weighed by dividing the weight of the unknown number of objects to be weighed by the set unit weight of the objects to be weighed, and the calculated number A counting device in an electronic digital display rod in which the number is displayed digitally includes a storage device, the contents of this storage device and the output of the dividing device are added together, and the addition result is sent back to the storage device. an adding device for storing and thereby accumulating in the storage device the number of objects to be weighed calculated by the dividing device each time the object to be weighed is weighed; and a display device for displaying the contents of the storage device. A counting device for an electronic digital display rod, characterized by: