JP6089368B2 - measuring device - Google Patents

Description

  The present invention relates to a measuring apparatus such as an electronic balance, and more particularly to a measuring apparatus having a counting processing function called counting.

Conventionally, a counting device using an electronic balance has been known. The counting device is a set of small articles to be measured based on, for example, the total weight of a set of a large number of small articles or a single unit weight of the small articles (weight per small article; hereinafter abbreviated as “single weight”). The number of the small articles included in is calculated. Various techniques for improving the accuracy of counting processing by such a counting device have been proposed.
For example, in the technique disclosed in Patent Document 1, the counting device divides the measured value of the object to be measured by the average reference weight (weight corresponding to a single weight) to obtain the number represented by a numerical value including a decimal value. The calculation is performed and presented to the user, and the user repeats the work of additionally placing the object to be measured while performing an operation of converting the presented number into an integer according to his / her own judgment. In the technique disclosed in Patent Document 1, the accuracy of the measurement processing of the object to be measured is increased by such processing.

JP 2003-254817 A

Incidentally, the accuracy of the counting process by the counting device largely depends on the initial setting. In the initial setting, it is usually necessary for the user to place a predetermined number of objects to be measured on the placement unit of the counting device while counting the number of objects to be measured.
When this initial setting is performed with a small number of objects to be measured, a measurement error in the counting process increases. Therefore, initial setting with a certain number of objects to be measured is preferable. However, when the number of objects to be measured used for the initial setting is increased, naturally, the possibility of erroneous counting of the objects to be measured by the user increases, and the time required for the initial setting also increases. Therefore, there is a need for a counting device that can perform initial setting using a large number of objects to be measured with simple operations without complicated operations by the user.

Note that Patent Document 1 does not disclose any simplification of work in the initial setting. In addition, in the technique disclosed in Patent Document 1, there is a process that the user has to judge by himself / herself in addition to the work of additionally placing the object to be measured, and the user is required to work more than a simple work. Yes. Therefore, even if the accuracy of the counting process is improved, it is difficult to say that the operation is simple for the user.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a measuring apparatus that can perform highly accurate counting processing with a simple initial setting operation.

In order to solve the above-described problem, the measuring apparatus according to the first aspect of the present invention detects a weight of the measurement object placed on the placement part on which the measurement object is placed and the placement part. A weight detection unit, a placement target number setting unit for setting a placement target number that is the number of the objects to be measured to be placed on the placement unit, and the measurement that the user placed on the placement unit A placement number measuring unit for measuring a placement number that is the number of objects, a placement number measured by the placement number measurement unit, and the weight detection when placing the measurement object of the placement number. A unit weight calculation unit that calculates the unit weight of the object to be measured based on the weight detected by the unit, a repetition error related to the measurement apparatus, and the number of placements measured by the placement number measurement unit , Based on the unit weight calculated by the unit weight calculation unit, The maximum number calculation unit for calculating a maximum number of measurable said measured object without error occurs in several processing, the measurement error the the largest error that can occur when counting process the DUT, the A measurement error calculation unit that is calculated based on a weighing amount of the measuring device, the unit weight, the number of previous placements, and the repetition error, and the placement target number set by the previous placement target number setting unit. A first notifying unit for notifying the user, a second notifying unit for notifying the user of the previously described placement number measured by the placed number measuring unit, and a third notifying unit for notifying the user of the measurement error. The setting target number setting unit described above sets a predetermined initial value as an initial setting target number and, after a predetermined operation by the user, newly sets the maximum number calculated by the maximum number calculating unit. Placement target number Set to.

The “placement target number” is a value that is updated each time a predetermined operation by the user (placement number increase / decrease operation for increasing / decreasing the number of objects to be measured on the placement unit) is performed. That is, the target placement number is set to a predetermined initial value, and then updated (reset) to the maximum number value calculated by the maximum number calculation unit after a predetermined operation by the user. The process relating to the resetting is “a process of performing initial setting of the counting process using more objects to be measured”. Therefore, every time this resetting process is performed, errors occurring in the counting process to be executed thereafter are reduced.
The “single weight w” is the number of objects to be measured (set quantity Ns) that is the number of objects to be measured placed on the placing part by the user, and the weight detection unit when the Ns to be measured is set. Is calculated based on the weight detected by.

With this configuration, the user is prompted to increase or decrease the number of mounted objects based on the maximum number of objects to be measured that can be measured without causing an error in the object counting process. The user refers to the notification by the first notification unit and the second notification unit and places the measurement object on the placement unit so that the number of the measurement objects on the placement unit approaches the placement target number. The initial setting for the counting process can be performed with high accuracy by simply performing simple operations.
That is, according to the measuring apparatus according to the first aspect of the present invention, the user is required to perform a complicated operation in which the user places the object to be measured on the mounting portion while counting the number of objects to be measured as in the conventional measuring apparatus. In addition, it is possible to make an initial setting for performing a highly accurate counting process. Therefore, according to the measuring apparatus according to the first aspect of the present invention, highly accurate initial setting can be performed with a simple operation in a short time without applying stress to the user. Further, in the measurement apparatus according to the first aspect of the present invention, since the initial setting is performed taking into consideration the “repetitive error” that is an error peculiar to each measurement apparatus, the measurement apparatus does not perform such initial setting. In comparison, the accuracy of the counting process is further improved.
In addition, the user can easily know the maximum error that can actually occur in the subsequent counting process when the initial setting is completed at the present time. Therefore, measurement within an error range that can be allowed by the user is easily realized.

A measuring device according to a third aspect of the present invention includes an operation unit for allowing a user to select whether or not the measurement error notified by the third notification unit is acceptable in the measuring device according to the second aspect. It is characterized by. With this configuration, the user himself / herself can determine whether or not the measurement error is allowed, and the counting process within the range of the measurement error desired by the user can be easily realized.
The measuring apparatus according to the fourth aspect of the present invention is the measuring apparatus according to the second or third aspect, wherein the maximum counting number setting is set for setting the maximum counting number, which is the maximum number of the measurement objects to be counted by the measuring apparatus. The counting maximum number setting unit sets the maximum counting number based on the weighing and the unit weight. With this configuration, the maximum number of counts is automatically set, so that it is not necessary for the user to perform an operation for setting the maximum number of counts, and the user's labor can be further saved.
The measuring apparatus according to the fifth aspect of the present invention is the measuring apparatus according to the second or third aspect, wherein the maximum counting number setting is set for setting the maximum counting number that is the maximum number of the objects to be measured to be counted by the measuring apparatus. The maximum counting number setting unit sets the maximum counting number based on an input by a user operation.
With this configuration, the user can set the maximum number of counts to a desired number. Therefore, the user can perform the above-described resetting process while confirming an error that may occur with respect to a desired quantity.

The measurement apparatus according to a sixth aspect of the present invention is the measurement apparatus according to any one of the first to fifth aspects, wherein the unit weight calculation unit is a device described in the previous section measured by the unit number measurement unit. When there is a change in the number, a new unit weight is calculated on the basis of the previous number after the change and the weight after the change.
With this configuration, each time the value of the set number is updated, the unit weight value is recalculated (updated), thereby improving the accuracy of the unit weight value. In other words, the unit weight value calculated using the updated number of placements is closer to the true value than the previously calculated unit weight value. That is, errors that may occur in the counting process that is executed thereafter are further reduced, and the accuracy of the counting process is improved.

A measuring device according to a seventh aspect of the present invention is the measuring device according to any one of the first to sixth aspects, wherein the number of the objects to be measured placed on the placing portion is the maximum number. And a process for prompting the user to reduce the number of the objects to be measured placed on the placement section when the judgment result by the judgment section is affirmative. And a controller for performing the operation.
By configuring in this way, it is possible to prevent the initial setting from being performed by the number of objects to be measured exceeding the maximum number of objects to be measured without causing an error in the counting process of the objects to be measured. . Therefore, it is possible to suppress deterioration in accuracy of the counting process.

The measurement apparatus according to an eighth aspect of the present invention is the measurement apparatus according to any one of the first to seventh aspects, wherein an acquisition unit that acquires a determination reference value related to the measurement error, and the measurement error is And a control unit that performs processing for prompting the user to perform the above-described number increase / decrease operation until the value becomes equal to or less than the determination reference value.
With such a configuration, the measurement apparatus determines whether to allow a measurement error at the current time and determines whether to execute the resetting process. Thereby, the burden on the user in the initial setting for the counting process can be further reduced.

A measuring apparatus according to a ninth aspect of the present invention includes a mounting unit on which an object to be measured is mounted, a weight detection unit that detects the weight of the object to be measured mounted on the mounting unit, and a user A placement number measuring unit that measures the placement number that is the number of the objects to be measured placed on the placement unit, a placement number that is measured by the placement number measurement unit, and Based on the weight detected by the weight detection unit at the time of placing the object to be measured, a unit weight calculation unit that calculates the unit weight of the object to be measured, and the measurement object to be counted by the measurement device The maximum counting number setting unit for setting the maximum counting number, which is the maximum number, and the measurement error, which is the maximum error that may occur when the object to be measured is counted, are set to the maximum counting number set by the maximum counting number setting unit. The number and the unit weight calculated by the unit weight calculation unit And 置個 number placement measured by the front according 置個 number measuring unit, characterized in that it comprises a repetitive errors relating to the measuring device, and a measuring error calculator for calculating, based on the.
With this configuration, the user can efficiently perform the initial setting for the counting process with reference to the measurement error calculated by the measurement error calculation unit.

The measuring device according to a tenth aspect of the present invention is the measuring device according to the ninth aspect, wherein the maximum counting number setting unit sets the maximum counting number based on the weighing and the unit weight of the measuring device. It is characterized by.
With this configuration, the maximum number of counts is automatically set, so that it is not necessary for the user to perform an operation for setting the maximum number of counts, and the user's labor can be further saved.

The measuring apparatus according to an eleventh aspect of the present invention is the measuring apparatus according to the ninth aspect, wherein the maximum counting number setting unit sets the maximum counting number based on an input by a user operation. .
With this configuration, the user can set the maximum number of counts to a desired number. Therefore, the user can perform the above-described resetting process while confirming an error that may occur with respect to a desired quantity.

1 is an external perspective view of a measuring apparatus according to a first embodiment of the present invention. It is a block diagram which shows the system configuration example of the measuring apparatus which concerns on 1st Embodiment of this invention. It is a figure which shows the 1st part of the flowchart of the initialization process performed when the measuring apparatus which concerns on 1st Embodiment of this invention performs a counting process. It is a figure which shows the 2nd part of the flowchart of the initialization process performed when the measuring apparatus which concerns on 1st Embodiment of this invention performs a counting process. It is a figure which shows the 3rd part of the flowchart of the initial setting process performed when the measuring apparatus which concerns on 1st Embodiment of this invention performs a counting process. It is a figure which shows an example of the transition of the display of a display part when performing the process of the flowchart shown to FIG. 3 thru | or FIG. It is a figure which shows the 1st part of the flowchart of the initialization process performed when the measuring apparatus which concerns on 2nd Embodiment of this invention performs a counting process. It is a figure which shows the 2nd part of the flowchart of the initial setting process performed when the measuring apparatus which concerns on 2nd Embodiment of this invention performs a counting process. It is a figure which shows the 3rd part of the flowchart of the initialization process performed when the measuring apparatus which concerns on 2nd Embodiment of this invention performs a counting process. It is a figure which shows the 4th part of the flowchart of the initialization process performed when the measuring apparatus which concerns on 2nd Embodiment of this invention performs a counting process. It is a figure which shows an example of the transition of the display of a display part when performing the process of the flowchart shown to FIG. It is a figure which shows the flowchart which concerns on the process (step S212) peculiar to the measuring apparatus which concerns on 3rd Embodiment of this invention. It is a figure which shows the flowchart which concerns on the process (step S213) peculiar to the measuring apparatus which concerns on 3rd Embodiment of this invention.

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. However, in each figure, the size and scale of each part are appropriately changed from the actual ones. Further, since the embodiments described below are preferable specific examples of the present invention, various technically preferable limitations are attached thereto. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these forms.
Hereinafter, a measuring apparatus according to an embodiment of the present invention will be described with reference to the drawings.

[First Embodiment]
The measuring device according to the first embodiment of the present invention is, for example, a counting device that measures the weight of a set of articles and calculates the number of articles included in the set based on the measurement result.
FIG. 1 is an external perspective view of the measuring apparatus according to the first embodiment of the present invention. As shown in the figure, on the upper surface side of the main body case 100 of the measuring apparatus 1, a mounting portion 103 is provided that is a table on which an article to be measured (hereinafter referred to as an object to be measured) is mounted. In addition, a display unit 105 such as an LCD (Liquid Crystal Display) and an input unit 107 for an input operation by a user are provided on the front side of the main body case 100 of the measuring apparatus 1.

In the main body case 100, a weight detection unit (see FIG. 2) not shown in FIG. 1 is accommodated. The placement unit 103 is configured such that the weight of the placed measurement object is applied to the weight detection unit as a load.
The display unit 105 displays various information by display control by the control unit 11.
The input unit 107 receives a user input operation, generates a signal corresponding to the input operation, and outputs the signal to the control unit 11. Here, the input unit 107 includes a first switch 107a, a second switch 107b, a third switch 107c, a fourth switch 107d, and a fifth switch 107e. Hereinafter, “switch” is abbreviated as “SW”.
The first SW 107 a is an operation switch used for “turning on the power”, “execution of various processes”, and the like of the measurement apparatus 1. The first SW 107b is an operation switch used for “power-off” of the measuring apparatus 1 or the like. The third SW 107c is a switch for performing a setting operation / decision operation. The fourth SW 107d and the fifth SW 107e are switches for selecting a mode.

FIG. 2 is a block diagram showing a system configuration example of the measuring apparatus 1 according to the first embodiment of the present invention. As shown in the figure, the measuring apparatus 1 includes a control unit 11, a calculation unit 13, a weight detection unit 15, a ROM 17, a RAM 19, a placement unit 103, a display unit 105, an input unit 107, Have
The control unit 11 is a CPU that executes various processes and controls each unit in an integrated manner. Each unit is connected to the control unit 11 via a system bus 200.

The calculation unit 13 calculates values such as a maximum measurable quantity Nm, a maximum error E, a set quantity Ns, and a reset number Nr, which will be described later, according to control by the control unit 11. These calculation methods will be described in detail later.
The weight detection unit 15 is a scale unit that outputs an electrical signal corresponding to the weight of the object to be measured placed on the placement unit 103.
The ROM 17 is a storage medium that stores an operation program of the measurement apparatus 1. The control unit 11 controls each unit according to the operation program stored in the ROM 17. The RAM 19 is a storage medium that stores various data related to measurement by the measurement device 1.

  FIG. 3 is a diagram showing a first part of a flowchart of an initial setting process executed when the measuring apparatus 1 according to the first embodiment of the present invention performs a counting process. FIG. 4 is a diagram showing a second part of the flowchart of the initial setting process executed when the measuring apparatus 1 according to the first embodiment of the present invention performs the counting process. FIG. 5 is a diagram showing a third part of a flowchart of an initial setting process executed when the measuring apparatus 1 according to the first embodiment of the present invention performs a counting process. FIG. 6 is a diagram illustrating an example of display transition of the display unit 105 when the processing of the flowcharts illustrated in FIGS. 3 to 5 is being performed.

  First, the control unit 11 determines whether or not the first SW 107a has been pressed (step S1). When the first SW 107a is pushed down while the power of the measurement apparatus 1 is turned off, the control unit 11 activates each part of the measurement apparatus 1. When step S1 is branched to NO, the process returns to step S1. In other words, in a state where the power of the measurement apparatus 1 is turned off, the control unit 11 does not execute any processing until the first SW 107a is pushed down.

On the other hand, when step S1 is branched to YES, the control unit 11 causes the display unit 105 to display a predetermined “standby display screen (for example, an initial screen at start-up)” (step S2), and the measurement device 1 Then, a mode for performing normal measurement (in this example, the measurement mode) is set (step S3). In the mode in which normal measurement is performed, the control unit 11 executes processing related to normal measurement.
Subsequently, the control unit 11 determines whether or not the fourth SW 107d has been pressed (step S4). In this example, when the fourth SW 107d is pressed down, the control unit 11 displays an initial setting screen (hereinafter referred to as “counting initial setting screen”) related to the “counting measurement mode” that is a mode for performing the counting process. It is displayed on the display unit 105.
When step S4 is branched to NO, the process proceeds to step S3. That is, the process in step S4 is a process of waiting until the fourth SW 107d is pushed down by the user. This step S4 provides the user with an opportunity to select the counting measurement mode.

  When step S4 is branched to YES (when the fourth SW 107d is pushed down), the control unit 11 causes the display unit 105 to display a counting initial setting screen (step S5). Through the processing in step S5, for example, a screen labeled D1 in FIG. 6 (in this example, a screen with “PC-10”) is displayed on the display unit 105. The counting initial setting screen D1 is a screen that prompts the user to place a predetermined number (hereinafter referred to as initial placement number; “10” in this example) of the measurement object on the placement unit 103. .

In accordance with the counting initial setting screen displayed on the display unit 105 by the process in step S5, the user places the object to be measured on the placement unit 103 by the initial placement number (step S6).
On the other hand, after finishing the process in step S5, the controller 11 determines whether or not the third SW 107c has been pushed down (step S7). When the third SW 107c is pushed down in a state where the counting initial setting screen is displayed on the display unit 105, the calculation unit 13 assumes that the object to be measured is placed by the initial placement number, and the maximum measurable quantity. (A value indicating how many objects to be measured can be counted at the maximum by the measuring apparatus 1) is calculated (step S8). Specifically, when the maximum measurable quantity is Nm, the weighing of the measuring device is W, and the unit weight of the object to be measured is w, the calculation unit 13
Nm = W / w (Formula 1)
The maximum measurable quantity Nm is calculated. That is, the calculation unit 13 functions as a maximum counting number setting unit that sets a maximum counting number (maximum measurable quantity Nm) that is the maximum number of the objects to be measured to be counted by the measuring apparatus 1. In other words, the maximum counting number setting unit sets the maximum counting number based on the weight of the measuring device 1 and the unit weight.

  The “single weight w” is calculated by dividing the weight detected by the weight detection unit 15 at the time of calculation by a set quantity Ns (described later). The value of the unit weight w calculated here is stored in the RAM 19 and used for subsequent calculations. Although details will be described later, since the value of the unit weight w is recalculated and updated as appropriate, the RAM 19 always stores the latest unit weight w value (the stored value of the unit weight w is updated). ) That is, the calculation unit 13 places the number of objects to be measured (set quantity Ns), which is the number of objects to be measured placed on the placement unit 103 by the user, and the number of objects to be measured (set quantity Ns). It functions as a unit weight calculation unit that calculates the unit weight of the object to be measured based on the weight detected by the weight detection unit 15 during placement.

The “set quantity Ns” is a value that is updated each time the processes of steps S14 to S18 are performed. The set quantity Ns is updated by the processing of steps S14 to S18 described later, with the above-mentioned “initial placement number (10 in this example)” as an initial value. In other words, the processing from step S14 to step S18 is processing to reset the value of the set quantity Ns (hereinafter, the processing from step S14 to step S18 is referred to as “resetting processing”).
This resetting process is “a process for performing an initial setting of the counting process by using more objects to be measured”. Accordingly, every time this resetting process is performed, errors generated in the counting process performed thereafter decrease (the value of the maximum error E decreases). Further, the unit weight value calculated using the reset set quantity Ns is more accurate than the previously calculated unit weight value (a value closer to the true value).

  In the first embodiment of the present invention, every time the value of the set quantity Ns is updated through the resetting process of steps S14 to S18, the value of the unit weight w is also updated by the process of subsequent step S8. In other words, by repeatedly executing the resetting process, the unit weight value can be calculated as a value closer to the true value, so that an error (maximum error E) that can occur in the subsequent counting process is reduced. (The accuracy of the counting process is improved).

  That is, as described above, the unit weight w is calculated by dividing the “weight” detected by the weight detection unit 15 by the “set quantity Ns”. In other words, if the value of the set quantity Ns changes, the value of the unit weight w also changes. Accordingly, every time the control unit 11 updates the value of the set quantity Ns (executes the process of step S18 described later), the control unit 11 proceeds to step S8 and re-establishes the value of the maximum measurable quantity Nm and the value of the unit weight w. Calculate (update). In this way, each time the resetting process is performed, the set quantity Ns and the unit weight w are updated, thereby improving the accuracy of the unit weight w and the maximum measurable quantity Nm.

By the way, as a specific calculation example according to (Equation 1), for example, when the weight of the measuring device 1 is 4000 g and the unit weight of the object to be measured is 1 g, the maximum measurable quantity Nm = 4000 [pieces].
When the process in step S8 described above is completed, the calculation unit 13 calculates the maximum error E (step S9). In detail, when the “repetition error” peculiar to the measurement apparatus 1 is e and the set quantity is Ns, the calculation unit 13
E = (e · W) / (Ns · w) (Formula 2)
As a result, the value of the maximum error E is calculated. The maximum error E is the maximum error that can occur when the measuring device 1 with the repetition error e measures the maximum measurable quantity Nm. That is, the value of the maximum error E is a value indicating the maximum error that can occur in the measurement by the measurement device 1. That is, the calculation unit 13 sets the measurement error (maximum error E), which is the maximum error that can occur when the object to be measured is counted, to the weighing W of the measuring device 1, the unit weight w, and the placement. It functions as a measurement error calculator that calculates based on the number (set quantity Ns) and the repetition error e.
Here, the calculation unit 13 calculates the maximum error E as the maximum measurable quantity Nm calculated by (Equation 1), the number of placement (set quantity Ns), and the repetition error e.
E = (e · Nm) / Ns (Formula 2.1)
It may be calculated by substituting for.

Here, the repetition error e is a value indicating the degree of coincidence between measurement results obtained by repeated measurement of the same measurement amount performed under the same conditions. Specifically, for example, it is a value indicating a difference between the maximum value and the minimum value of the measurement result when the same measurement amount is repeatedly measured under the same conditions. This repetition error e is an error peculiar to each measuring apparatus.
By the way, as a specific calculation example by (Equation 2), if the weighing of the measuring device 1 is 4000 g, the unit weight w is 1 g, the repetition error is 0.2 g, and the set quantity Ns is 10, the maximum error E = 80 [g].
When the process in step S9 is completed, the control unit 11 calculates the reset number Nr (step S10). The resetting number Nr is the maximum number of objects to be measured that can be measured without causing an error in the calculation of the number of objects to be measured, and is used in the resetting process. That is, the control unit 11 and the calculation unit 13 serve as a placement target number setting unit that sets a resetting number Nr that is a “placement target number” that indicates the number of objects to be placed on the placement unit 103. Function. Specifically, the calculation unit 13
Nr <(Ns · w) / (2 · e) (Formula 3)
The reset number Nr is calculated as follows. Here, the calculation unit 13 sets the maximum integer not exceeding the value calculated by the right side of (Expression 3) as the reset number Nr. That is, the calculation unit 13 calculates the repetition error e related to the measurement apparatus 1, the placement number (set quantity Ns) indicating the number of objects to be measured placed on the placement unit 103 by the user, and the unit weight w. Based on this, it functions as a maximum number calculating section for calculating the maximum number of objects to be measured (reset number Nr) that can be measured without causing an error in the counting process of the objects to be measured. Then, the control unit 11 sets a predetermined initial value (initial placement number) as an initial placement target number, and newly sets the maximum number (reset number Nr) calculated after a predetermined operation by the user. It functions as a placement target number setting unit for setting the placement target number.

By the way, (Expression 3) is an expression derived from the following proportional expression ((Expression 4)).
Ns · w: e <Nr · w: (w / 2) (Formula 4)
The left side shows the ratio between the weight [g] of the measured object per set quantity Ns and the repetition error e [g]. The right side is the weight [g] of the measured object per reset number Nr and the minimum weight counted by the measuring apparatus 1 as one measured object (w / 2) [g]. The ratio is shown.
In the counting process by the measuring apparatus 1, the number of objects to be measured is calculated by dividing the weight detected by the weight detector 15 by the unit weight w of the object to be measured. When a “remainder” occurs in this division, the calculation unit 13 compares the “remainder” value with the value of (w / 2), and rounds down / rounds up the “remainder” based on the comparison result. Process. That is, when the remainder value is smaller than (w / 2), the remainder is rounded down, and when the remainder value is (w / 2) or more, the remainder is rounded up (recorded as one object to be measured). ). That is, (Expression 4) is an expression for calculating the number of objects to be measured that actually include an error in the count processing result due to the repetition error e of the measurement apparatus 1.

  As a specific calculation example according to (Expression 3), assuming that the unit weight w is 1 g, the repetition error e is 0.2 g, and the set quantity Ns is 10, Nr <25. Therefore, the reset number Nr is Nr = 24 [pieces] which is the maximum integer smaller than 25.

By the way, when the calculation of the maximum measurable quantity Nm, the maximum error E, and the resetting number Nr is completed through the processing in steps S8 to S10 described above, the control unit 11 calculates the maximum measurable quantity Nm and the maximum error E, It is displayed on the display unit 105 (step S11). That is, the control unit 11 and the display unit 105 function as a third notification unit that notifies the user of the measurement error (maximum error E).
Specifically, when 4000 is calculated as the value of the maximum measurable quantity Nm as in the above-described example, “Max 4000” is displayed on the display unit 105 as in the screen D2 illustrated in FIG. . Further, when 80 is calculated as the value of the maximum error E as in the above-described example, “Err 80” is displayed on the display unit 105 as the screen D2 shown in FIG. Hereinafter, the screen displayed on the display unit 105 in the process in step S11 is referred to as a “maximum error display screen”.

Here, the control unit 11 determines whether or not the first SW 107a has been pressed (step S12). When the first SW 107a is pushed down at this time, the user visually recognizes the display screen of the display unit 105 (for example, the maximum error display screen D2 shown in FIG. 6), and the value of the maximum error E displayed on the screen. Is determined to be acceptable, and at this time, the mode is actually shifted to the counting measurement mode. That is, the first SW 107a functions as an operation unit for allowing the user to select whether or not the measurement error (maximum error E) notified by the third notification unit can be allowed.
Therefore, when step S12 is branched to YES, the control unit 11 proceeds to the counting process (actually starts the counting process). That is, the control unit 11 performs a normal counting process to calculate the number of objects to be measured, and causes the display unit 105 to display the calculation result. Specifically, the control unit 11 displays the calculation result on the display unit 105 as, for example, “xxx pcs” as the number of objects to be measured, as in a screen D3 shown in FIG.

On the other hand, when step S12 is branched to NO, the control unit 11 determines whether or not the third SW 107c is pressed (step S13). When the third SW 107c is pushed down at this time, the user visually recognizes the maximum error display screen (for example, the screen D2 shown in FIG. 6) of the display unit 105 and reduces the maximum error E displayed on the display screen. This is a case where it is determined that the resetting process is to be executed. When step S13 is branched to NO, the process proceeds to step S11.
When step S13 is branched to YES, the control unit 11 determines the reset number Nr calculated in step S10 and the number of objects to be measured currently placed on the placement unit 103 (hereinafter, “current placement number”). The value of Nn is displayed on the display unit 105 (step S14).
Here, the current placement number Nn is obtained by dividing the weight Wn detected by the weight detection unit 15 at the time point by the latest value of the unit weight w stored in the RAM 19. That is, the calculation unit 13 functions as a placement number measurement unit that measures the number of objects to be measured (current placement number) placed on the placement unit 103 by the user. Specifically, the calculation unit 13
Nn = Wn / w (Formula 5)
As shown in FIG.
Therefore, the value of the current placement number Nn displayed on the display unit 105 is increased or decreased when the number of objects to be measured on the placement unit 103 is increased or decreased by the user (step S15).

Specifically, for example, as shown in a screen D4 in FIG. 6, the display screen is divided into two upper and lower stages, and the set quantity Ns (in this example, “24” pcs calculated in step S10) is displayed on the upper stage, and the lower stage is displayed. The current placement number Nn (in this example, “10” pcs which is also the initial placement number notified in step S5) may be displayed. In other words, the control unit 11 and the display unit 105 function as a first notification unit that notifies the user of the reset number Nr as the placement target number. Moreover, the control part 11 and the calculation part 13 function as a 2nd alerting | reporting part which alert | reports the present mounting number Nn to a user. The control unit 11 and the display unit 105 as the first notification unit notify the user of the new placement target number, and the control unit 11 and the display unit 105 as the second notification unit include By notifying the user of the number of placements described above, a notification is made to prompt the user to perform a number-of-placement increase / decrease operation for increasing / decreasing the number of objects to be measured placed on the placement unit 103. Hereinafter, the screen displayed on the display unit 105 in the process in step S14 is referred to as a “resetting screen”.
If the two-stage display is not possible due to the specifications of the display unit 105, the user performs some switch operation on the value of the reset number Nr and the value of the current placement number Nn. Alternatively, it may be configured so that it can be switched and displayed as appropriate.

Based on the reset number Nr and the current placement number Nn displayed on the display unit 105 in the process in step S14, the user sets an appropriate quantity of the object to be measured (the value of the current placement number Nn is the reset number). The number is placed on the placement portion 103 (a quantity considered to be necessary for obtaining the value of Nr) (step S15).
That is, in this step S15, the user simply looks at the reset number Nr notified by the display unit 105 and the current placement number Nn, and the value of the current placement number Nn becomes the value of the reset number Nr. It is only necessary to perform a simple operation of placing the object to be measured on the placement unit 103 so as to approach and the value of the current placement number Nn does not exceed the reset number Nr.
That is, unlike the prior art, there is no need for the user to bother the number of objects to be measured and place them on the placement unit. Therefore, according to the measuring apparatus according to the first embodiment of the present invention, it is possible to perform a highly accurate setting that does not cause miscounting by the user in a simple operation in a short time without stressing the user.

By the way, after the reset screen is displayed on the display unit 105 in step S14, the control unit 11 determines whether or not the third SW 107c is pressed down (step S16). When the third SW 107c is pressed down at this time, the user visually recognizes the display screen of the display unit 105 (for example, the screen D5 shown in FIG. 6), and the current placement number Nn displayed on the display screen is again displayed. This is a case where it is determined that the value is sufficiently close to the set number Nr.
When step S16 is branched to NO, the control unit 11 proceeds to the process of step S14. That is, the control unit 11 continues to display the reset screen on the display unit 105 until the third SW 107c is pressed down by the user.

On the other hand, when step S16 is branched to YES (when the third SW 107c is pushed down), the control unit 11 determines whether or not the current placement number Nn at the time is equal to or less than the reset number Nr ( Step S17). When step S17 is branched to NO, the control unit 11 proceeds to the process of step S14. That is, the control unit 11 determines whether or not the number of the objects to be measured (currently placed number Nn) placed on the placing unit 103 exceeds the maximum number (reset number Nr). Function as. When the determination result is affirmative, the control unit 11 prompts the user to reduce the number of the objects to be measured placed on the placement unit 103.
When step S17 is branched to YES, the control unit 11 resets the value of the current placement number Nn at the time (“23” in the example shown in FIG. 6) as the value of the new set quantity Ns. (Step S18) The process proceeds to step S18. That is, the process in step S18 is a process for updating (resetting) the value of the set quantity Ns. The process described above is the process related to the initial setting executed when the measurement apparatus 1 according to the first embodiment of the present invention performs the counting process.

Hereinafter, as a reference example, a specific example in which the above-described process is executed again using the set quantity Ns updated (reset) by the process in step S18 will be described with reference to FIG.
First, in the process of step S9 (calculation of the maximum error E) and the process of step S10 (calculation of the reset number Nr), the control unit 11 sets the value of the set quantity Ns updated (reset) in step S18. The calculation unit 13 is controlled so that the above calculation is performed again.
That is, in the case of this example, the control unit 11 controls the calculation unit 13 to recalculate the maximum error E with the set quantity Ns = 23 in the process of step S9. In this case, the maximum error E is calculated as “34.78...” By the calculation unit 13, and the maximum error E is obtained as “35” by rounding up the numerical value after the decimal point to “1”. In subsequent step S10, the control unit 11 controls the calculation unit 13 to recalculate the reset number Nr using the updated set number Ns = 23 (in this example, Nr = 57 is obtained).
In step S11, the maximum error display screen D6 shown in FIG. If the user who has visually recognized this determines that the maximum error E = 35 [pieces] is within the allowable range and presses down the first SW 107a, the measurement apparatus 1 shifts to the counting measurement mode (actually counts). Start processing). In this case, the display on the display unit 105 is a display such as a screen D3 shown in FIG.

On the other hand, when the user determines that the maximum error E = 35 [pieces] displayed on the display unit 105 is not within the allowable range, the first SW 107a is not pushed down, and the control unit 11 performs step as described above. The processes from S14 to S18 are executed again. In the case of this example, the initial reset screen is like a screen D7 shown in FIG. 6 (reset number Nr = 57, current placement number Nn = 23). Here, the user places the object to be measured on the placement unit 103 so that the value of the current placement number Nn does not become 57 or more.
Then, as shown in the screen D8 shown in FIG. 6, when the value of the current placement number Nn becomes 55, the user pushes down the third SW 107c, and the current placement number Nn becomes the reset number Nr ( When the control unit 11 determines that the value is “57” in the present example (step S16 is branched to YES and step S17 is branched to YES), the control unit 11 determines that the current placement number Nn at that time. (“55” in this example) is reset as the value of the set quantity Ns.

Thereafter, the control unit 11 re-calculates the maximum measurable quantity Nm, the maximum error E, and the resetting number Nr by executing the above-described processing of Step S8 to Step S10 again. In this example, the maximum measurable quantity Nm = 4000, the maximum error E = 15, and the reset number Nr = 137 are obtained.
In step S11, the maximum error display screen D9 shown in FIG. If the user who has visually recognized this determines that the maximum error E = 15 [pieces] is within the allowable range and presses down the first SW 107a, the measurement apparatus 1 shifts to the counting measurement mode (actually counts). Start processing). In this case, the display on the display unit 105 is a display such as a screen D3 shown in FIG.
On the other hand, when it is determined that the maximum error E = 15 [pieces] displayed on the display unit 105 is not within the allowable range and the third SW 107c is pressed, the control unit 11 performs step S14 as described above. The resetting process in step S18 is executed again. In the case of this example, the initial reset screen is like a screen D10 shown in FIG. 6 (reset number Nr = 137, current placement number Nn = 55). Here, the user places the object to be measured on the placement unit 103 so that the current placement number Nn does not become 137 or more. Thereafter, the control unit 11 performs processing similar to the processing described above.

As described above, according to the first embodiment of the present invention, it is possible to provide a measuring apparatus capable of performing high-accuracy counting with a simple initial setting operation.
In the conventional technique, “a process for performing initial setting of the counting process using more objects to be measured” requires a complicated operation from the user. Furthermore, the work induces mistakes by the user due to its complexity.
On the other hand, the operation required by the measurement apparatus according to the first embodiment of the present invention from the user is mainly a very simple and simple operation in steps S15 and S16. Further, according to the measuring apparatus according to the first embodiment of the present invention, the user repeatedly performs the resetting process on the measuring apparatus 1 until the value of the maximum error E becomes an acceptable value, thereby improving the measurement accuracy. be able to.
In addition, 1st Embodiment of this invention is not limited to the above-mentioned example, A various deformation | transformation and application are possible within the range of the summary of 1st Embodiment of this invention.
<< First Modification >>
For example, in step S11, instead of displaying the maximum error display screen on the display unit 105 and notifying the user of the maximum error E “quantitatively”, the maximum error E satisfies a predetermined condition (for example, the maximum error E When the value becomes equal to or less than a preset threshold value), for example, a voice or light may be emitted to notify the user to that effect. In the case of such a configuration, the measurement apparatus 1 may be provided with sound generation means such as a speaker and illumination means such as an LED (Light Emitting Diode) as the notification unit. With this configuration, information necessary for the user can be provided to the user without using the display unit 105.

<< Second Modification >>
For example, in step S14, instead of displaying a reset screen on the display unit 105 and notifying the user of the reset number Nr and the current placement number Nn “quantitatively”, the current placement number Nn satisfies a predetermined condition. When it is satisfied (for example, when the current placement number Nn exceeds the reset number Nr), for example, a voice or light may be emitted to notify the user to that effect. In the case of such a configuration, the measurement apparatus 1 may be provided with sound generation means such as a speaker and illumination means such as an LED (Light Emitting Diode) as the notification unit. With this configuration, information necessary for the user can be provided to the user without using the display unit 105.

[Second Embodiment]
Hereinafter, a measuring apparatus according to a second embodiment of the present invention will be described. In order to avoid duplication of explanation, differences from the measurement apparatus according to the first embodiment will be described.
In the measuring apparatus 1 according to the first embodiment, the maximum measurable quantity Nm is calculated by dividing the weight W of the measuring apparatus 1 by the unit weight w of the object to be measured. On the other hand, in the measuring apparatus 1 according to the second embodiment, the value of the maximum measurable quantity Nm is set by the user. That is, in the measuring apparatus 1 according to the second embodiment, the calculation unit 13 functions as a maximum counting number setting unit that sets a maximum counting number (maximum measurable quantity Nm) based on an input by a user operation. In other words, in the measurement apparatus according to the second embodiment, the user determines the maximum number to be counted. Therefore, in the measuring apparatus 1 according to the second embodiment, the value of the maximum error E is a value indicating an error that may occur when measuring the maximum measurable quantity Nm set by the user.

  Hereinafter, an initial setting process executed when the measurement apparatus according to the second embodiment of the present invention performs the counting process will be described. FIG. 7 is a diagram showing a first part of a flowchart of an initial setting process executed when the measuring apparatus according to the second embodiment of the present invention performs a counting process. FIG. 8 is a diagram showing a second part of the flowchart of the initial setting process executed when the measuring apparatus according to the second embodiment of the present invention performs the counting process. FIG. 9 is a diagram showing a third part of the flowchart of the initial setting process executed when the measuring apparatus according to the second embodiment of the present invention performs the counting process. FIG. 10 is a diagram showing a fourth part of the flowchart of the initial setting process executed when the measuring apparatus according to the second embodiment of the present invention performs the counting process. FIG. 11 is a diagram illustrating an example of the transition of display on the display unit when the processing of the flowcharts illustrated in FIGS. 7 to 10 is being performed.

  First, the control unit 11 determines whether or not the first SW 107a has been pressed (step S101). When step S101 is branched to NO, the process returns to step S101. On the other hand, when step S101 is branched to YES, the control unit 11 causes the display unit 105 to display a predetermined “standby display screen (for example, an initial screen at startup)” (step S102), and the measurement apparatus 1 Then, a mode for performing a normal measurement (in this example, a measurement mode) is set (step S103). In the mode in which normal measurement is performed, the control unit 11 executes processing related to normal measurement.

Subsequently, the control unit 11 determines whether or not the fifth SW 107e has been pressed (step S104). When this step S104 is branched to NO, the process returns to step S103.
On the other hand, when step S104 is branched to YES, the control unit 11 causes the display unit 105 to display a maximum measurable quantity setting screen (step S105). Here, the control unit 11 determines whether or not an increment switch (not shown) for incrementing the value of the maximum measurable quantity Nm has been pressed (step S106). When step S106 is branched to YES, the control unit 11 increases the value of the maximum measurable quantity Nm displayed on the display unit 105 by a predetermined number (step S109), and returns to step S105.

If step S106 is branched to NO, it is determined whether or not a decrement switch (not shown) for decrementing the maximum measurable quantity Nm has been pressed (step S107). When this step S107 is branched to YES, the control unit 11 decreases the maximum measurable quantity Nm displayed on the display unit 105 by a predetermined number (step S110), and returns to step S105.
The increment / decrement operation may be performed using the fourth SW 107d / fifth SW 107e, which are switches for mode selection. In other words, the fourth SW 107d and the fifth SW 107e may be switches that are used for both the mode selection operation and the increment / decrement operation. With this configuration, it is not necessary to separately provide an increment switch (not shown) and a decrement switch (not shown).
When step S107 is branched to NO, the control unit 11 determines whether or not the third SW 107c has been pushed down (step S108). When step S108 is branched to NO, the process returns to step S105.

When step S108 is branched to YES, the control unit 11 stores the value of the maximum measurable quantity Nm currently displayed on the display unit 105 in the RAM 19 (step S111), and the value of the maximum measurable quantity Nm. Is displayed on the display unit 105 (step S112), and the display is fixedly displayed (continuous display) for a predetermined time (for example, about 2 seconds) (step S113).
Subsequently, the control unit 11 displays a counting initial setting screen on the display unit 105 (step S114). By the processing in step S114, for example, a screen labeled D1 in FIG. 6 (a screen with “PC-10” in this example) is displayed on the display unit 105. In accordance with the counting initial setting screen, the user places the object to be measured on the placement unit 103 by the initial placement number (10 in this example) (step S115).

After finishing the process in step S114, the controller 11 determines whether or not the third SW 107c has been pushed down (step S116). When step S116 is branched to NO, the process returns to step S114. On the other hand, when step S116 is branched to YES, the calculation unit 13 calculates the maximum error E using (Equation 2) described above (step S117). In calculating the maximum error E, it is necessary to also calculate the value of the unit weight w of the object to be measured. Therefore, the value of the unit weight w is recalculated every time the processing in step S117 is performed (in the RAM 19). The value of the unit weight w is updated).
In step S117, the calculation unit 13 determines the maximum measurable quantity Nm set in steps S104 to S108, the placement quantity (set quantity Ns), and the repetition error e as described above (formula 2.1). ) May be substituted to calculate the maximum error E.

  When the processing in step S117 is completed, the calculation unit 13 calculates the reset number Nr using (Equation 3) described above (step S118). And the control part 11 displays the value of the largest measurable quantity Nm and the largest error E on the display part 105 (step S119). Specifically, for example, when 500 is set as the value of the maximum measurable quantity Nm and 10 is calculated as the value of the maximum error, as shown in the maximum error display screen D11 shown in FIG. , Err 10 ″ is displayed on the display unit 105.

  Here, the control unit 11 determines whether or not the first SW 107a has been pushed down (step S120). When the first SW 107a is pushed down at this time, the user visually recognizes the display screen of the display unit 105 (for example, the maximum error display screen D11 shown in FIG. 11), and the value of the maximum error E displayed on the screen. Is determined to be acceptable, and at this time, the mode is actually shifted to the counting measurement mode. Therefore, when step S120 is branched to YES, the control unit 11 proceeds to the counting process (actually starts the counting process). That is, the control unit 11 performs a normal counting process to calculate the number of objects to be measured, and causes the display unit 105 to display the calculation result. Specifically, the control unit 11 displays the calculation result on the display unit 105 as, for example, “xxx pcs” as the number of objects to be measured as in a screen D12 illustrated in FIG.

On the other hand, when step S120 is branched to NO, the control unit 11 determines whether or not the third SW 107c is pressed down (step S121). When the third SW 107c is pushed down at this time, the user visually recognizes the maximum error display screen (for example, the screen D11 shown in FIG. 11) of the display unit 105 and decreases the maximum error E displayed on the display screen. This is a case where it is determined that the resetting process is to be executed. When step S121 is branched to NO, the process proceeds to step S119.
When step S121 is branched to YES, the control unit 11 causes the display unit 105 to display the reset number Nr calculated in step S118 and the current placement number Nn (step S122). The value of the current placement number Nn is calculated by the calculation unit 13 using (Equation 5) described above.

Based on the reset number Nr and the current placement number Nn displayed on the display unit 105 in the process in step S122, the user sets an appropriate quantity of the object to be measured (the value of the current placement number Nn is the reset number). The number is placed on the placement portion 103 (a quantity that is considered necessary for the value of Nr) (step S123).
Specifically, for example, as shown in the resetting screen D13 shown in FIG. 11, the display screen is divided into two upper and lower stages, and the resetting number (“24” pcs in the example shown in FIG. 11) is displayed on the lower stage. The currently loaded number Nn (“10” pcs in the example shown in FIG. 11) may be displayed.

By the way, after the reset screen is displayed on the display unit 105 in step S122, the control unit 11 determines whether or not the third SW 107c is pressed (step S124). When the third SW 107c is pushed down at this time, the user visually recognizes the display screen of the display unit 105 (for example, the screen D14 shown in FIG. 11), and the current placement number Nn displayed on the display screen is again displayed. This is a case where it is determined that the value is sufficiently close to the set number Nr.
When step S124 is branched to NO, the control unit 11 proceeds to the process of step S122. That is, the control unit 11 continues to display the reset screen on the display unit 105 until the third SW 107c is pressed down by the user.

On the other hand, when step S124 is branched to YES (when the third SW 107c is pushed down), the control unit 11 determines whether or not the current placement number Nn at the time is equal to or less than the reset number Nr ( Step S125). When step S125 is branched to NO, the control unit 11 proceeds to the process of step S122.
When step S125 is branched to YES, the control unit 11 resets the value of the current placement number Nn at the time (“23” in the example shown in FIG. 11) as the value of the new set quantity Ns. (Step S126) Then, the process proceeds to step S117. That is, the process in step S126 is a process for updating (resetting) the value of the set quantity Ns.
The process described above is the process related to the initial setting executed when the measuring apparatus 1 according to the second embodiment of the present invention performs the counting process.

Hereinafter, as a reference example, a specific example in which the above-described process is executed again using the set quantity Ns updated (reset) by the process in step S126 will be described with reference to FIG.
First, in the process of step S117 (calculation of the maximum error E) and the process of step S118 (calculation of the reset number Nr), the control unit 11 sets the value of the set quantity Ns updated (reset) in step S126. The calculation unit 13 is controlled so that the above calculation is performed again.
That is, in the case of this example, the control unit 11 controls the calculation unit 13 so as to recalculate the maximum error E with the set quantity Ns = 23 in the process of step S117. In this case, the calculation unit 13 determines the maximum error E as “5”. In subsequent step S118, the control unit 11 controls the calculation unit 13 to recalculate the reset number Nr using the updated set number Ns = 23 (in this example, Nr = 57 is obtained).

  In step S119, the maximum error display screen D15 shown in FIG. If the user who has visually recognized this determines that the maximum error E = 5 [pieces] is within the allowable range and presses down the first SW 107a, the measurement apparatus 1 shifts to the counting measurement mode (actually counts). Start processing). In this case, the display on the display unit 105 is a display such as a screen D12 shown in FIG.

On the other hand, when the user determines that the maximum error E = 5 [pieces] displayed on the display unit 105 is not within the allowable range, the first SW 107a is not pushed down, and the control unit 11 performs step as described above. The resetting process from S122 to S126 is executed again. In the case of this example, the initial reset screen is like a screen D16 shown in FIG. 11 (the reset number Nr = 57, the current placement number Nn = 23). Here, the user places the object to be measured on the placement unit 103 so that the value of the current placement number Nn does not become 57 or more.
Then, as shown in the screen D17 shown in FIG. 11, when the value of the current placement number Nn becomes 55, the user pushes down the third SW 107c, and the current placement number Nn becomes the reset number Nr ( When the control unit 11 determines that the value is “57” in the present example (step S16 is branched to YES and step S17 is branched to YES), the control unit 11 determines that the current placement number Nn at that time. (“55” in this example) is set as the value of the set quantity Ns.

Thereafter, the control unit 11 re-calculates the maximum error E and the reset number Nr by executing the above-described processing of step S117 and step S118 again. In this example, the maximum error E = 2 and the reset number Nr = 137 are obtained.
In step S119, the maximum error display screen D18 shown in FIG. If the user who has visually recognized this determines that the maximum error E = 2 [pieces] is within the allowable range and presses down the first SW 107a, the measurement apparatus 1 shifts to the counting measurement mode (actually counts). Start processing). In this case, the display on the display unit 105 is a display such as a screen D12 shown in FIG.

  On the other hand, when the user determines that the maximum error E = 2 [pieces] displayed on the display unit 105 is not within the allowable range, the control unit 11 performs the resetting process in steps S122 to S126 as described above. Try again. In the case of this example, the initial reset screen is like a screen D19 shown in FIG. 11 (the reset number Nr = 137, the current placement number Nn = 55). Here, the user places the object to be measured on the placement unit 103 so that the current placement number Nn does not become 137 or more. Thereafter, the control unit 11 performs processing similar to the processing described above.

  As described above, according to the second embodiment of the present invention, while having the same effect as the measurement apparatus according to the first embodiment, while confirming an error that the user can generate for a desired quantity, A measuring apparatus capable of performing the above-described resetting process can be provided.

[Third Embodiment]
Hereinafter, a measuring apparatus according to a third embodiment of the present invention will be described. In order to avoid duplication of explanation, differences from the measurement apparatus according to the first embodiment will be described. The measurement apparatus according to the third embodiment is different from the measurement apparatus according to the first embodiment mainly in the following points. That is, the measuring device according to the third embodiment executes step S212 (see FIG. 12) instead of step S12 (see FIG. 4) executed by the measuring device according to the first embodiment. In addition, the measuring apparatus according to the third embodiment executes step S213 (see FIG. 13) instead of step S13 (see FIG. 5) executed by the measuring apparatus according to the first embodiment.

FIG. 12 is a diagram illustrating a flowchart relating to processing (step S212) unique to the measurement apparatus according to the third embodiment of the present invention. FIG. 13 is a diagram illustrating a flowchart relating to processing (step S213) unique to the measurement apparatus according to the third embodiment of the present invention.
In the measurement apparatus 1 according to the first embodiment, the determination performed by the user in steps S12 and S13 (determination as to whether or not to allow the maximum error E at that time, and determination as to whether or not to perform the resetting process) Is performed by the control unit 11 in the measuring apparatus according to the third embodiment (steps S212 and 213).
That is, in the measuring apparatus 1 according to the third embodiment, the determination reference value (threshold value) related to the determination performed in step S212 is stored in the ROM 17 or the RAM 19 in advance. The control unit 11 compares the determination reference value stored in the ROM 17 or the RAM 19 with the value of the maximum error E at the time of execution of the process of step S212, and the value of the maximum error E is a value equal to or less than the determination reference value. It is determined whether or not (step S212).

When step S212 is branched to YES, in other words, when the value of the maximum error E is equal to or less than the determination reference value, the control unit 11 shifts the measurement apparatus 1 to the counting measurement mode and actually performs the counting process. To start. On the other hand, when step S212 is branched to NO, in other words, when the value of the maximum error E exceeds the determination reference value, the control unit 11 indicates that the value of the maximum error E exceeds the determination reference value. Is displayed on the display unit 105 (step S213). That is, step S213 is a step of notifying the user that the value of the maximum error E exceeds the determination reference value.
That is, the control unit 11 functions as an acquisition unit that acquires the determination reference value related to the measurement error (maximum error E) from the ROM 17 or the RAM 19. In addition, the control unit 11 and the display unit 105 perform notification that prompts the user to perform the above-described number increase / decrease operation until the measurement error (maximum error E) becomes a value equal to or less than the determination reference value. The subsequent processing from step S14 is the same processing as the processing given the same step number in the first embodiment.

As described above, according to the third embodiment of the present invention, it is possible to provide the measuring apparatus 1 that has the following effects in addition to the same effects as the measuring apparatus according to the first embodiment. That is, according to the measurement apparatus 1 according to the third embodiment, the determination performed by the user in the measurement apparatus 1 according to the first embodiment (determination performed in steps S12 and S13; is the maximum error E at that time allowed? Determination of whether or not and determination of whether or not to execute the resetting process) is performed on the measuring device 1 side (performed by the control unit 11), so that the burden on the user in the initial setting for the counting process is further reduced. Can do.
<< Third Modification >>
In the measurement apparatus 1 according to the third embodiment described above, the measurement apparatus 1 may be configured so that the “determination reference value” can be set to an arbitrary value by the user. In the case of such a configuration, for example, in the step of displaying the maximum measurable quantity Nm and the maximum error E on the display unit 105 (step S11 shown in FIG. 4), a process for the user to set the determination reference value is executed. In other words, for example, when the screen D2 illustrated in FIG. 6 is displayed on the display unit 105, the user may be given an opportunity to set the determination reference value.
Note that the timing for performing the processing related to the setting of the determination reference value is not limited to the above example, and may be any time at least before the execution of step S212.
According to the third modification, the burden on the user in the initial setting for the counting process is further reduced, and the counting process with the accuracy desired by the user is realized with a simple operation.

The present invention has been described above based on the embodiments. However, the present invention is not limited to the above-described examples, and it goes without saying that modifications and applications are possible within the scope of the present invention.
For example, two or more functions among the functions respectively assigned to the first SW 107a to the fifth SW 107e may be assigned to one or a plurality of switches.
Further, the above-described embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effect described in the column of the effect of the invention can be achieved. In the case of being obtained, a configuration from which this configuration requirement is deleted can also be extracted as an invention.

    DESCRIPTION OF SYMBOLS 1 ... Measuring apparatus, 100 ... Main body case, 103 ... Mounting part, 105 ... Display part, 107 ... Input part, 107a ... First switch, 107b ... Second switch, 107c ... Third switch, 107d ... Fourth switch, 107e ... 5th switch, 11 ... Control part, 13 ... Calculation part, 15 ... Weight detection part, 200 ... System bus.

Claims (10)

A placement section on which the object to be measured is placed;
A weight detection unit for detecting the weight of the object to be measured placed on the placement unit;
A placement target number setting unit for setting a placement target number that is the number of the objects to be measured to be placed on the placement unit;
A placement number measuring unit for measuring the placement number, which is the number of the objects to be measured, placed on the placement unit by the user;
The unit weight of the object to be measured based on the object number measured by the object number measuring unit and the weight detected by the weight detection unit when the object to be measured is placed. A unit weight calculation unit for calculating
In the counting process of the object to be measured, based on the repetition error related to the measurement apparatus, the number of placements measured by the placement number measurement unit, and the unit weight calculated by the unit weight calculation unit. A maximum number calculating unit for calculating the maximum number of the measured objects that can be measured without causing an error; and
Measurement that calculates the measurement error, which is the maximum error that can occur when the object to be measured is counted, based on the weighing of the measurement device, the unit weight, the number of pieces described above, and the repetition error. An error calculator,
A first notifying unit for notifying a user of the previously set placement target number set by the previously set placed target number setting unit;
A second notifying unit for notifying the user of the previously described set number measured by the set number measuring unit;
A third notification unit that notifies the user of the measurement error ,
The placement target number setting unit sets a predetermined initial value as an initial placement target number and, after a predetermined operation by the user, sets the maximum number calculated by the maximum number calculation unit as a new placement. A measuring device characterized in that it is set to a target number. The measurement apparatus according to claim 1 , further comprising an operation unit that allows a user to select whether or not the measurement error notified by the third notification unit is acceptable. A maximum counting number setting unit for setting a maximum counting number that is the maximum number of the objects to be measured to be counted by the measuring apparatus;
The counting maximum number setting unit, the weighing and the based on the unit weight measuring apparatus according to claim 1 or 2, characterized in that for setting the count maximum number. A maximum counting number setting unit for setting a maximum counting number that is the maximum number of the objects to be measured to be counted by the measuring apparatus;
The counting maximum number setting unit, based on the input by operation of the user, the measuring device according to claim 1 or 2, characterized in that for setting the count maximum number. The unit weight calculation unit calculates a new unit weight based on the post-change number and the changed weight when there is a change in the pre-position number measured by the pre-position number measurement unit. measurement apparatus according to any one of claims 1 to 4, characterized in that calculated. A determination unit for determining whether or not the number of the objects to be measured placed on the placement unit exceeds the maximum number;
When the determination result by the determination unit is affirmative, a control unit that performs processing for prompting the user to reduce the number of the objects to be measured placed on the placement unit;
Measurement apparatus according to any of claims 1 to 5, characterized in that it comprises a. An acquisition unit for acquiring a determination reference value related to the measurement error;
A control unit that performs processing for prompting the user to perform the increase / decrease operation of the number of placements until the measurement error is equal to or less than the determination reference value;
Measurement device according to any one of claims 1 to 6, characterized in that it comprises a. A placement section on which the object to be measured is placed;
A weight detection unit for detecting the weight of the object to be measured placed on the placement unit;
A placement number measuring unit for measuring the placement number, which is the number of the objects to be measured, placed on the placement unit by the user;
The unit weight of the object to be measured based on the object number measured by the object number measuring unit and the weight detected by the weight detection unit when the object to be measured is placed. A unit weight calculation unit for calculating
The maximum counting number setting unit that sets the maximum counting number that is the maximum number of the measurement objects to be counted by the measurement device, and the measurement error that is the maximum error that can occur when the measurement object is counted, The maximum counting number set by the counting maximum number setting unit, the unit weight calculated by the unit weight calculation unit, the number of placements measured by the placement number measurement unit, and the measurement apparatus A measurement error calculation unit for calculating based on the repetition error,
A measuring apparatus comprising: 9. The measuring apparatus according to claim 8 , wherein the maximum counting number setting unit sets the maximum counting number based on a weight of the measuring apparatus and the unit weight. The measuring apparatus according to claim 8 , wherein the maximum counting number setting unit sets the maximum counting number based on an input by a user operation.

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