JP2014102222A - Weighting controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weighting controller capable of preventing the operation of a weighting apparatus from being performed on the basis of the inappropriate setting values of operation conditions.SOLUTION: A weighting controller 2 installed in a weighting apparatus which weights an object to be weighted for controlling the operation of the weighting apparatus on the basis of the respective setting values of a plurality of operation conditions includes: a setting value storage region 6a in which the setting values of the respective operation conditions are stored; a reference value storage region 6b in which a reference value as the measure of the propriety determination of the setting values is stored about the respective operation conditions; setting value changing means for changing the setting values of the operation conditions stored in the setting value storage region; determination means for determining whether or not the setting values stored in the setting value storage region about the respective operation conditions are equal to the reference value stored in the reference value storage region; and a display part 8 for visually displaying the operation conditions whose setting values are not equal to the reference value on the screen on the basis of the determination result of the determination means.

Description

  The present invention relates to a weighing controller used in a weighing device that measures the weight of an object to be weighed.

  Conventionally, there are, for example, a hopper scale, a packer scale, a conveyor scale, and the like as a weighing device that measures the weight of an object to be weighed using a load cell (see, for example, Patent Documents 1 to 3).

  In such a weighing device, values (set values) for operating conditions including adjustment items such as a zero point and a span coefficient are set in order to perform the operation. With respect to such operating conditions, the user can change the set value so that a better operation or a desired operation can be performed. In addition, the number of set values of operation conditions has increased with the enhancement of the functionality of weighing instruments.

JP 2004-271350 A JP 2004-085282 A JP 2011-051704 A

  When a conventional weighing device as described above is delivered to a user and installed, an adjustment member of the weighing device dispatched from the manufacturer performs adjustment by changing the set value of the operating condition. At that time, the coordinator prepares a table of setting values for each operating condition determined based on the specifications of the weighing device, and after adjustment, see the table of setting values above and set each setting value to an appropriate value. Whether or not it is (a reasonable value) is checked. However, since the number of setting values for the operating conditions is large, the confirmation work is difficult, and there may be a case where confirmation is omitted. In that case, if there is a setting value of an inappropriate operating condition, a problem such as erroneous weighing may occur due to the operation of the weighing device based on the set value.

  In addition, during inspections such as periodic inspections, a measuring instrument coordinator dispatched by a manufacturer may perform inspections by changing the set values of operating conditions. At that time, the coordinator records the setting value of the operating condition before the change on, for example, a recording sheet, and then performs an inspection by changing the setting value of the operating condition. It returns to the set value of the condition. This is because an appropriate operating condition set value is set by the user before the inspection. However, since the number of operating condition setting values is large, after the inspection, the adjuster forgets to return the operating condition setting value to the operating condition setting value before the change, and sets all operating condition setting values. There are cases where it is not possible to reliably restore the value before the change. In that case, problems such as incorrect weighing may occur after the inspection because the weighing device is operated based on the set value of the inappropriate operating condition.

  In addition, such a weighing device is often incorporated in a production line, and the operation is performed based on a setting value of an inappropriate operating condition, so that the entire production line is stopped, which may cause a larger problem. .

  The present invention has been made to solve the above-described problems, and provides a weighing controller that can prevent the operation of a weighing device based on a setting value of an inappropriate operating condition. It is aimed.

  In order to achieve the above object, a weighing controller according to an aspect of the present invention is provided in a weighing device for weighing the object to be weighed, and the operation of the weighing device is performed for each of a plurality of operating conditions. A weighing controller that controls based on set values, a set value storage area in which set values for each of the operating conditions are stored, and a reference value that serves as a guide for determining the quality of the set values for each of the operating conditions Is stored in the set value storage area, the set value changing means for changing the set value of the operation condition stored in the set value storage area, and the set value storage area for each operation condition. Determination means for determining whether or not the set value being equal to the reference value stored in the reference value storage area, and the set value and the reference value based on a determination result by the determination means Before is not equal And a display means for displaying on the screen so as to be seen the operating conditions.

  According to this configuration, for each operating condition, a reference value that serves as a standard for determining whether the set value is acceptable is stored in the reference value storage area, and the determining means sets the set value and the reference value for each of all the operating conditions. Are determined to be equal to each other, and based on the determination result, the display means displays on the screen so that an operating condition where the set value and the reference value are not equal can be visually recognized. For this reason, for example, after an adjustment member of a weighing device dispatched from a manufacturer changes the setting value of the operating condition and adjusts or inspects the weighing device, the adjustment member operates the display unit by operating the determination unit. By looking at the screen, you can know all the operating conditions where the set value and reference value are not equal (different), check whether the set value is an appropriate value (a reasonable value), and If not, it can be changed to an appropriate value. Accordingly, it is possible to prevent the weighing device from being operated based on the set value of the inappropriate operating condition after the adjustment or inspection of the weighing device.

  Further, it may further comprise a first operating means for inputting a comparison command signal to the determination means, and the determination means may be configured to make the determination in response to the input of the comparison command signal.

  According to this configuration, the determination unit can be operated by operating the first operation unit, and can be displayed on the screen of the display unit so that an operating condition where the set value and the reference value are not equal can be visually recognized.

  Further, each operating condition value determined based on the specifications of the weighing device may be configured to be stored in advance in the reference value storage area as the first reference value.

  According to this configuration, since the value of each operating condition determined based on the specifications of the weighing device is stored in the reference value storage area in advance as the first reference value, the weighing device is shipped to the user. At the time of installation, for example, the adjustment device of the weighing device dispatched from the manufacturer changes or sets the setting value of the operating condition and adjusts the measurement device. You can see all the operating conditions where the set value and reference value are not equal by checking the screen of, check whether the set value is an appropriate value, and if it is not an appropriate value, Can be changed.

  A copy means for storing all the set values of the operating conditions stored in the set value storage area as the reference values in the reference value storage area in response to an input of a copy command signal; And a second operating means for inputting a command signal to the copying means.

  According to this configuration, when performing an inspection such as a periodic inspection, for example, when an adjustment staff dispatched from a manufacturer changes the setting value of the operating condition and performs an inspection, first, before changing the setting value, By operating the second operating means to cause the copying means to function and to store the set values of all operating conditions as reference values in the reference value storage area, it is set as appropriate operating conditions by the user before inspection, for example. All set values can be stored, and recording on a recording sheet is not required as in the prior art. Then, after performing the inspection, by operating the determination means, the adjuster can see all the operating conditions where the set value and the reference value are not equal by looking at the screen of the display means. Whether or not it is an appropriate value can be confirmed. If it is not an appropriate value, it can be changed to an appropriate value (for example, the same value as the reference value).

  Further, the display means displays on the screen at least the set value of the set value and the reference value for an operating condition where the set value and the reference value are not equal based on a determination result by the determining means. The setting value and the reference value may not be displayed for an operating condition in which the setting value and the reference value are equal.

  According to this configuration, since the set value and the reference value that are equal in value are not displayed, it is possible to easily recognize the operating condition in which the set value and the reference value are different.

  Further, the display means is configured to display both the set value and the reference value on a screen based on a determination result by the determination means for an operating condition where the set value and the reference value are not equal. May be.

  According to this configuration, by displaying both the set value and the reference value having different values, it is obvious at a glance how much the set value and the reference value are different.

  The present invention has the above-described configuration, and has an effect that it is possible to provide a weighing controller that can prevent the operation of the weighing device based on a set value of an inappropriate operating condition. .

It is a block diagram which shows an example of schematic structure of the weighing | measuring equipment provided with the measurement controller of embodiment of this invention. (A), (b) is a figure which shows an example of the display screen of the display part of the operation indicator at the time of setting mode, respectively.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiment.

(Embodiment)
FIG. 1 is a block diagram illustrating an example of a schematic configuration of a weighing device including a weighing controller according to an embodiment of the present invention.

  This weighing device includes a device main body 1 and a weighing controller 2 that controls the operation of the device main body 1. This weighing device is a weighing device using a weight sensor (load cell) such as a hopper scale, a packer scale, or a conveyor scale. In the circle 100 in FIG. 1, an example of the device main body 1 in the case where the weighing device is a hopper scale, for example, is schematically shown.

  The weighing controller 2 includes a control unit 3 and an operation indicator 4, and also functions as the set value changing means, determination means, display means, first and second operation means, copying means, and the like described above. The control unit 3 is configured by, for example, a microcontroller, and includes an arithmetic control unit 5 including a CPU and a storage unit 6 including a RAM and a ROM. The arithmetic control unit 5 controls the operation display 4 in addition to performing overall operation control of the device main body 1 by executing an execution program of the CPU stored in the ROM of the storage unit 6 by the CPU. The arithmetic control unit 5 can be connected to the USB memory 9 via a connection interface (not shown).

  The storage unit 6 stores a set value storage area 6a for storing each set value of all the operating conditions, and a reference value storage area for storing a reference value serving as a standard for determining whether the set values are good or bad for each of all the operating conditions. 6b and an initial value storage area 6c for storing initial values of the respective operating conditions for all the operating conditions.

  Here, the initial value of the operating condition is a predetermined value determined in advance for each operating condition, and is determined in advance as a standard value in all measuring devices that can use the weighing controller 2. Value.

  In the metering controller 2, the initial value storage area 6c stores the aforementioned initial values for all the operating conditions in advance, and these initial values cannot be changed (rewritten). In the set value storage area 6a, the same values as the initial values for all the operating conditions are stored in advance as the first set values.

  Further, in the reference value storage area 6b, the values (design values) of the respective operating conditions determined based on the specifications of the weighing instrument that is actually used by the weighing controller 2 are stored in advance as the first reference values. Has been. The first reference value is created by, for example, a personal computer (not shown), stored in the USB memory 9 from the personal computer, and copied from the USB memory 9 to the reference value storage area 6b and stored. Instead of the USB memory 9, another storage medium (for example, an SD memory card) may be used. Further, it may be copied from the personal computer (not shown) to the reference value storage area 6b via a USB cable or the like.

  The operation indicator 4 is composed of, for example, a touch screen display, and has an input unit 7 for performing an operation of inputting a set value of an operation condition of the weighing device, and a display for displaying a measured value or the like on a screen (display screen). Part 8. Here, the input unit 7 and the display unit 8 are integrally configured as the operation indicator 4 (touch screen type display), but may be provided separately.

  Further, the arithmetic control unit 5 of the control unit 3 inputs a signal from the input unit 7 of the operation indicator 4 and outputs a signal such as data to be displayed on the display unit 8 of the operation indicator 4.

  In the weighing controller 2, the control unit 3 controls the operation of the entire weighing device including the device main body 1 based on the set values of a plurality of operating conditions stored in the set value storage area 6a. That is, the operation of the weighing device is defined based on the set value of the operating condition stored in the set value storage area 6a.

  When the weighing device is a hopper scale, for example, the device body 1 can hold the object to be weighed supplied from above as shown in a circle 100 and discharge it by opening the discharge gate 12. A hopper 10 and a plurality (for example, 3 to 4) of load cells 11 for loading and supporting the hopper 10. Further, an object storage (not shown) for supplying an object to be weighed to the hopper 10 is provided above the hopper 10. The output signal of each load cell 11 is input to the calculation control unit 5 of the control unit 3, and the calculation control unit 5 calculates the weight of the object to be weighed in the hopper 10 based on the output signal of each load cell 11. Then, in the control unit 3, for example, the lower gate of the reservoir is opened to supply the object to be weighed to the hopper 10, and the lower gate of the reservoir is opened when the object to be weighed in the hopper 10 reaches a predetermined weight. After closing and calculating the final weight of the object to be weighed in the hopper 10, the discharge gate 12 of the hopper 10 is opened at a predetermined timing to discharge the object to be weighed, and the discharge gate 12 is controlled to be closed (usually) Behavior).

  Here, the weighing controller 2 has a weighing mode for causing the weighing device to perform a normal operation as described above, and a setting mode for setting and changing operation conditions of the weighing device. The measurement controller 2 is configured to be able to switch between the measurement mode and the setting mode by operating the operation indicator 4 and to select either one. In the weighing mode, the above-described normal operation is performed. For example, the weight value of the object to be weighed held in the hopper 10 calculated based on the output signal of the load cell 11 is displayed on the screen of the display unit 8. Is displayed.

  FIGS. 2A and 2B are diagrams each showing an example of a display screen of the display unit 8 of the operation indicator 4 in the setting mode. FIG. 2A is an example of a screen on which setting values for operating conditions are displayed on the display unit 8 of the operation display 4.

  When the setting mode is selected, for example, as shown in FIG. 2A, the setting value is displayed on the screen 80 of the display unit 8 for each of a plurality of operating conditions. There are a number of items in the operating conditions of this measuring instrument, including items related to weight measurement such as weighing capacity, scale, unit, zero point, and span coefficient. Depending on the operating conditions (items) such as units, the set value itself may not indicate the value of the operating condition. For example, for the unit, the set value “0” indicates “g (gram)”, the set value “1” indicates “kg (kilogram)”, and the set value “2” indicates “t (ton)”. It is determined in advance.

  In the screen 80 shown in FIG. 2A, three tabs 81 to 83 are displayed at the top of the screen, and when each tab 81 to 83 is touched, contents corresponding to the tab are displayed. When switched to the setting mode, the contents corresponding to the “setting” tab 81 are initially displayed. For example, when the “reference value comparison” tab 82 is touched, the contents as shown in FIG. 2B are displayed.

  In the setting screen shown in FIG. 2A, each setting value display area 88 displays the setting value of each operating condition stored in the setting value storage area 6a. The set value can be changed by touching. For example, when an arbitrary set value display area 88 is touched, a small window on which a numeric keypad or the like for inputting the changed set value is displayed is opened, and the set value is changed by performing a predetermined operation in the small window. can do.

  When a “copy to reference value” key 87 (second operating means) is touched, a copy command signal is input from the input unit 7 to the arithmetic control unit 5 of the control unit 3. In response to this, the arithmetic control unit 5 functions as a copying unit, and sets the setting values of all the operating conditions stored in the setting value storage area 6a as the reference values of all the operating conditions in the reference value storage area 6b. Remember. That is, each reference value of all operating conditions stored in the reference value storage area 6b is rewritten to the same value as the set value.

  When the arrow keys 85 and 86 are touched, the display content can be moved up and down (scrolled). When the “return” key 84 is touched, the screen returns to the previous screen, for example, a mode selection screen (not shown).

  At the time of shipment of the weighing instrument, the same value as the initial value of each operation condition in the initial value storage area 6c is stored in the set value storage area 6a of the weighing controller 2 as the set value, and the reference value storage area 6b. The design value of each operating condition determined based on the specifications of the weighing device is stored as a reference value. Then, when the weighing device is delivered to the user and installed, the adjustment device of the weighing device dispatched from the manufacturer touches the setting value display area 88 to change the setting value of the operating condition and perform the adjustment.

  After the adjustment, the adjuster touches the “reference value comparison” tab 82 (first operation means). Then, a reference value comparison command signal is input from the input unit 7 to the arithmetic control unit 5 of the control unit 3. In response to this, the arithmetic control unit 5 functions as a determination unit, and compares the set value stored in the set value storage area 6a with the reference value stored in the reference value storage area 6b for each operating condition. Then, it is determined whether or not both are equal. If there is an operating condition in which the set value and the reference value are not equal, the item name, the set value, and the reference value of the operating condition are displayed on the screen 80 of the display unit 8. For example, in the screen 80 shown in FIG. 2B, since the set value of the span coefficient is not equal to the reference value, these values are displayed together with the item name (span coefficient). FIG. 2B shows the case where there is only one operating condition (span coefficient) where the set value and the reference value are not equal, and there are a plurality of operating conditions where the set value and the reference value are not equal. Displays the item name, setting value, and reference value for each of these operating conditions.

  The adjuster can see, for example, the screen 80 shown in FIG. 2B that the set value of the span coefficient is not equal to (different from) the reference value, and the set value is an appropriate value (a reasonable value). ), If it is not an appropriate value, it can be changed to an appropriate value. Here, the reference value can be used as a standard (reference) for the adjuster to determine whether the set value is good or bad (whether the set value is an appropriate value).

  Therefore, it is possible to easily and reliably check the quality of the set values for all operating conditions during installation of the weighing instrument, and after the installation, the weighing instrument operates based on the set values of inappropriate operating conditions. Can be prevented.

  In addition, when performing inspections such as periodic inspections, if the coordinator dispatched by the manufacturer changes the operating condition set values and conducts inspections, before changing the set values, By touching the “copy” key 87, the set values of all the operation conditions stored in the set value storage area 6a are stored in the reference value storage area 6b as the reference values of all the operation conditions. As a result, all set values set as appropriate operating conditions by the user before inspection can be stored, and recording on recording paper becomes unnecessary as in the prior art. Thereafter, as described above, the set value display area 88 can be touched to change the set value.

  Then, after completion of the inspection, the “reference value comparison” tab 82 is touched. Then, a reference value comparison command signal is input from the input unit 7 to the control unit 3. In response to this, the control unit 3 compares the set value stored in the set value storage area 6a with the reference value stored in the reference value storage area 6b for each operating condition and determines whether or not they are equal. Determine whether. If there is an operating condition in which the set value and the reference value are not equal, the item name, the set value, and the reference value are displayed on the screen 80 of the display unit 8 for the operating condition. For example, in the screen 80 shown in FIG. 2B, since the set value of the span coefficient is not equal to the reference value, these values are displayed together with the item name (span coefficient).

  The adjuster can see, for example, the screen 80 shown in FIG. 2B that the set value of the span coefficient is not equal to (different from) the reference value, and the set value is an appropriate value (a reasonable value). If it is not an appropriate value, it can be changed to an appropriate value (for example, the same value as the reference value). Again, the reference value can be used as a guideline for the adjuster to determine whether the set value is good or bad (whether it is an appropriate value).

  Therefore, when changing the set value of the operating condition of the weighing instrument during periodic inspection, etc., it is possible to prevent forgetting to return to the value before the change. Based on this, it is possible to prevent the weighing device from being operated.

  As described above, the set value of the operating condition can be changed by touching the set value display area 88 on the screen shown in FIG. 2A. In the present embodiment, however, FIG. In the screen 80 shown in FIG. 2B, as in the case of the setting value display area 88 of the screen shown in FIG. 2A, the setting value display area 89 where the setting value is displayed is touched to change the setting value. It is possible. Further, in the small window that opens when the set value display area 89 is touched, for example, a “reference value” key is displayed in addition to a numeric keypad for inputting the set value after the change. When the “value” key is touched, the set value may be changed to a value equal to the reference value.

  In the present embodiment, how much or how different the set value and the reference value are displayed by displaying both the set value and the reference value having different values on the screen shown in FIG. 2B. Is obvious. However, only one of the set value and the reference value, for example, the set value may be displayed. Even in this case, for example, it can be known that the set value of the span coefficient is not equal (different) to the reference value, and it can be confirmed whether or not the set value is an appropriate value (a reasonable value).

  Further, in the present embodiment, as shown in FIG. 2B, for an operation condition in which the set value and the reference value are equal, the set value and the reference value including the item name of the operation condition are displayed on the screen of the display unit 8. 80. However, if the setting value and the reference value are different from each other so that the setting value and the reference value can be distinguished from each other, the item names for all the operating conditions are displayed. Only the set value and the reference value or the set value may be displayed. For example, a different set value and reference value may be displayed in a different color from the same set value and reference value so that they can be easily identified by color. Further, instead of the item name, a symbol or number assigned in advance for each item may be displayed so that each item can be identified.

  In this embodiment, when the “initial value comparison” tab 83 is touched, an initial value comparison command signal is input from the input unit 7 to the control unit 3. In response to this, the control unit 3 compares the set value stored in the set value storage area 6a for each operating condition with the initial value stored in the initial value storage area 6c to determine whether they are equal. Determine whether. If there is an operation condition in which the set value and the initial value are not equal, the item name, the set value, and the initial value of the operation condition are displayed on the screen 80 of the display unit 8. This display screen is, for example, a screen on which an initial value is displayed instead of the reference value in the screen 80 shown in FIG. Thus, by displaying both the set value and the initial value having different values, it is obvious at a glance how much the set value and the initial value are different. However, only one of the set value and the initial value, for example, the set value may be displayed. Even in that case, for example, it can be known that the set value of the span coefficient is not equal to (different from) the initial value. As described above, the initial value is a standard value for all weighing devices that can use the weighing controller 2, and therefore the set value is abnormal even if the set value is different from the initial value. However, it may be a rough guide for determining whether the set value is good or bad.

  Further, here, for the operation condition where the set value and the initial value are equal, the set value and the initial value including the item name of the operation condition are not displayed on the screen 80 of the display unit 8. If the setting value and the initial value are displayed so that the setting value and the initial value can be identified as the same value, the setting value and the initial value or only the setting value are displayed together with the item names for all operating conditions You may make it do. For example, a different set value and initial value may be displayed in a different color from the same set value and initial value so that they can be easily identified by color. Further, instead of the item name, a symbol or number assigned in advance for each item may be displayed so that each item can be identified.

  INDUSTRIAL APPLICABILITY The present invention is useful as a weighing controller or the like that can prevent the weighing device from being operated based on a set value of an inappropriate operating condition.

DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Measurement controller 3 Control part 4 Operation indicator 5 Operation control part 6 Storage part 6a Setting value storage area 6b Reference value storage area 6c Initial value storage area 7 Input part 8 Display part

Claims (6)

A weighing controller that is provided in a weighing device for weighing the object to be weighed and controls the operation of the weighing device based on each set value of a plurality of operating conditions,
A set value storage area for storing set values of the respective operating conditions;
A reference value storage area for storing a reference value serving as a standard for determining the quality of the set value for each of the operating conditions;
A set value changing means for changing the set value of the operating condition stored in the set value storage area;
Determination means for determining whether or not the set value stored in the set value storage area and the reference value stored in the reference value storage area are equal for each operating condition;
A measurement controller comprising: display means for displaying on the screen so that the operating condition where the set value and the reference value are not equal can be visually recognized based on a determination result by the determination means. A first operation means for inputting a comparison command signal to the determination means;
The weighing controller according to claim 1, wherein the determination unit is configured to perform the determination in response to an input of the comparison command signal.   The weighing according to claim 1, wherein each of the operating condition values determined based on the specifications of the weighing device is stored in the reference value storage area in advance as the first reference value. Controller. In response to the input of a copy command signal, copy means for storing all the set values of the operating conditions stored in the set value storage area as the reference values in the reference value storage area;
The metering controller according to claim 1, further comprising: a second operation unit for inputting the copy command signal to the copy unit.   The display means displays on the screen at least the set value of the set value and the reference value for an operating condition where the set value and the reference value are not equal based on a determination result by the determining means, The weighing controller according to claim 1, wherein the setting value and the reference value are not displayed for an operation condition in which the set value and the reference value are equal.   The display unit is configured to display both the set value and the reference value on a screen for an operating condition where the set value and the reference value are not equal based on a determination result by the determination unit. Item 6. The weighing controller according to Item 5.

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