JP7084615B2 - Weight measuring device and manufacturing device using weight measuring device - Google Patents

Description

The present invention relates to a weight measuring device and a manufacturing device using the weight measuring device.

In Patent Document 1, for example, in order to know the flow rate of powder (transportation amount per unit time), the weight of powder stored in a hopper or the like is continuously measured, and the weight change per unit time ( A technique for calculating the amount of weight loss) to obtain the flow rate of the powder is described.

Japanese Unexamined Patent Publication No. 11-160138

The problem to be solved is to provide a weight measuring device capable of suitably measuring the weight of an object, and a manufacturing device using the weight measuring device.

The weight measuring device according to the first aspect of the present invention has a measuring unit that measures the weight of an object and outputs a measurement signal, a period setting unit that sets a first period and a second period, and the first period. , And, for each of the second period, the calculation unit that calculates the calculated value using the measurement signal output from the measurement unit, the first mode, and the second mode different from the first mode. It has a mode setting unit that can be set and a control unit that controls the calculation unit to perform calculations according to the settings of the mode setting unit, and the control unit sets the mode at the start time of the first period. When the unit is set to the first mode and the mode setting unit is set to the first mode at the end time of the first period, the output from the measurement unit at the start time of the first period. The calculation unit is controlled so as to calculate the calculated value of the first period using the measurement signal and the measurement signal output from the measurement unit at the end time of the first period, and the first period When the mode setting unit is set to the first mode at the start time of the first mode and the mode setting unit is set to the second mode at the end time of the first period, the mode setting unit is set to the second mode at the start time of the first period. The calculation unit is set so as to calculate the calculation value in the first period using the measurement signal output from the measurement unit and the measurement signal output from the measurement unit at the end time of the second mode. When the mode setting unit is set to the second mode at the start time of the first period and the mode setting unit is set to the first mode at the end time of the first period under control, the first mode is set. The calculated value of the first period is calculated using the measurement signal output from the measurement unit at the end time of the two modes and the measurement signal output from the measurement unit at the end time of the first period. The arithmetic unit is controlled so as to do so.
The weight measuring device according to the second aspect of the present invention has a measuring unit that measures the weight of an object and outputs a measurement signal, a period setting unit that sets a first period and a second period, and the first period. And, for each of the second period, the calculation unit that calculates the calculated value using the measurement signal output from the measurement unit, the first mode, and the third mode different from the first mode. It has a mode setting unit that can be set, and a control unit that controls the calculation unit to perform calculations according to the settings of the mode setting unit. The control unit has a control unit from a start time to an end time of the first period. When the mode setting unit is set to the first mode, the measurement signal output from the measurement unit at the end time of the first period and the measurement signal output from the measurement unit at the start time of the first period. The calculation unit is controlled so as to calculate the calculation value in the first period using the value corresponding to the difference from the measurement signal, and the mode setting unit performs the first at the start time of the first period. When the mode setting unit is set to the mode, then the mode setting unit is set to the third mode, and then the mode setting unit is set to the first mode until the end time of the first period, the third mode is set. A value corresponding to the difference between the measurement signal output from the measurement unit at the start time of the first period and the measurement signal output from the measurement unit at the start time of the first period, and the end time of the first period. The calculation unit is controlled so as to calculate the calculated value in the first period using the value corresponding to the measurement signal output from the measurement unit, and the mode is set at the start time of the first period. When the unit is set to the first mode and then the mode setting unit is set to the third mode until the end time of the first period, the unit is output from the measurement unit at the start time of the third mode. The calculation unit so as to calculate the calculation value in the first period using the value corresponding to the difference between the measurement signal and the measurement signal output from the measurement unit at the start time of the first period. When the mode setting unit is set to the third mode at the start time of the first period, and then the mode setting unit is set to the first mode until the end time of the first period. A weight measuring device that controls the calculation unit so as to calculate the calculated value of the first period using the value corresponding to the measurement signal output from the measurement unit at the end time of the first period.

According to the present invention, it is possible to provide a weight measuring device capable of suitably measuring the weight of an object, and a manufacturing device using the weight measuring device.

FIG. 1 is a diagram illustrating a manufacturing apparatus using the weight measuring apparatus of the first embodiment. FIG. 2 is a diagram illustrating a configuration of the weight measuring device of the first embodiment. FIG. 3 is a flowchart illustrating the operation of the weight measuring device. FIG. 4 is a timing chart illustrating the operation of the weight measuring device. FIG. 5 is another timing chart illustrating the operation of the weight measuring device. FIG. 6 is yet another timing chart illustrating the operation of the weight measuring device. FIG. 7 is a timing chart illustrating the weight measuring device of the second embodiment. FIG. 8 is a flowchart illustrating the operation of the weight measuring device of the third embodiment. FIG. 9 is a timing chart illustrating the operation of the weight measuring device. FIG. 10 is another timing chart illustrating the operation of the weight measuring device. FIG. 11 is a timing chart illustrating the operation of the weight measuring device of the fourth embodiment. FIG. 12 is a timing chart illustrating the operation of the weight measuring device according to the fifth embodiment.

(First Embodiment)

FIG. 1 is a diagram illustrating a manufacturing apparatus using the weight measuring apparatus of the first embodiment. In FIG. 1, the manufacturing device 1 includes a weight measuring device 10, a container 20, a belt conveyor 31, an arm driving unit 32, a control device 33, a discharging device 40, and a fluid 50.

The weight measuring device 10 has a function of measuring the weight of a mounted object. The control device 33 performs a predetermined calculation using a signal or the like output from the weight measuring device 10, and controls the weight measuring device 10, the belt conveyor 31, the arm drive unit 32, and the discharging device 40.

The discharge device 40 supplies the fluid 50 to the container 20 mounted on the weight measuring device 10. In the present embodiment, the measurement target is the fluid 50, but the measurement target may be a solid or the like. The fluid may be, for example, a liquid such as pure water, alcohol, blood for blood transfusion, a drip solution containing a drug, a solution of chemicals, a waste liquid of a factory, or granules such as rice grains and gravel. , Wheat flour, Kataguri flour and the like. The solid can be, for example, gravel, iron scraps, coal lumps and the like.

The arm drive unit 32 puts the container 20 filled with the fluid 50 on the belt conveyor 31 and puts the empty container 20 on the belt conveyor 31 on the weight measuring device 10. The belt conveyor 31 conveys the empty container 20 and the container 20 filled with the fluid 50 in the A1 direction.

2A and 2B are diagrams for explaining the configuration of the weight measuring device according to the first embodiment, FIG. 3 is a flowchart for explaining the operation of the weight measuring device, and FIGS. 4 to 6 are timing charts for explaining the operation of the weight measuring device. ..

In FIG. 2, the weight measuring device 10 includes a control unit 11, a measuring unit 12, a period setting unit 13, an input / output unit 14, a storage unit 15, a display unit 16, and first to fifth buttons 17a. It has 17e, a mode setting unit 18, and a calculation unit 19.

The control unit 11 includes the measurement unit 12, the period setting unit 13, the input / output unit 14, the storage unit 15, the display unit 16, the mode setting unit 18, and the control unit 11 based on the operation of the first to fifth buttons 17a to 17e by the user. The arithmetic unit 19 is controlled.

The measuring unit 12 has, for example, a strain gauge, a piezoelectric force sensor, or the like, measures the weight of an object mounted on the weight measuring device 10, and outputs a measurement signal corresponding to the weight of the mounted object.

The calculation unit 19 can calculate the integrated amount from the start of the operation of the weight measuring device 10 to the present by using the measurement signal acquired from the measurement unit 12. Further, the calculation unit 19 can calculate the first recorded value, the second recorded value, and the like, which will be described later, using the measurement signal output from the measurement unit 12.

The period setting unit 13 sets a predetermined period. In the present embodiment shown in FIG. 4, the period setting unit 13 sets the first recording period, the second recording period, the third recording period, and the like every 10 minutes from the time t0. It goes without saying that the recording period set by the period setting unit 13 is arbitrary and can be, for example, 20-minute intervals, 30-minute intervals, 60-minute intervals, or the like.

The period setting unit 13 is the elapsed time from the start of the operation of the weight measuring device 10 (for example, the elapsed time since the power of the weight measuring device is turned on, the elapsed time from the start time of the first recording period, the weight). It is also possible to calculate the elapsed time from the time when the measurement is first started after the power of the measuring device is turned on).

The input / output unit 14 supplies the signal input from the external control device 33 (see FIG. 1) or the like to the control unit 11, and outputs the signal supplied from the control unit 11 to the control device 33 or the like. The storage unit 15 stores the measurement signal output by the measurement unit 12, the first recorded value, the second recorded value, ..., the integrated amount, the elapsed time, and the like, based on the control signal supplied from the control unit 11.

The display unit 16 displays information such as a warning display described later, a first recorded value stored in the storage unit 15, a second recorded value, and the like, based on the control signal supplied from the control unit 11.

The mode setting unit 18 sets the operation mode of the weight measuring device 10. In the present embodiment, the mode setting unit 18 can switch between a normal mode, a confirmation mode, and an exchange mode. The normal mode is, for example, a mode set at the time of normal measurement or the like. The confirmation mode is, for example, a mode set when the user confirms the state of the weight measuring device 10. The exchange mode is, for example, a mode set when the fluid 50 measured by the measuring unit 12 is removed.

In the present embodiment, for example, when the first button 17a is pressed (not long pressed), the normal mode is switched to the confirmation mode. When the first button 17a is pressed (not long-pressed) and then the second button 17b is long-pressed (for example, an operation of holding down for about 1 second), the normal mode is switched to the exchange mode. When the third button 17c is pressed (not long pressed), the confirmation mode or the exchange mode is switched to the normal mode. The fourth button 17d is a power button. The fifth button 17e is a plurality of operation buttons and is used for detailed operations in the normal mode, the confirmation mode, and the exchange mode.

Next, the operation of the weight measuring device 10 will be described with reference to FIG. First, in step S1, the control unit 11 determines whether or not the first recording period, the second recording period, and the like have ended (see time t3, t4, and t7 in FIG. 4). If the recording period is over, the process proceeds to step S2, and if the recording period is not over, step S1 is repeated.

In step S2, the control unit 11 determines whether or not the mode setting unit 18 is in the confirmation mode (see times t10 to t11 in FIG. 6). If it is not the confirmation mode (if it is the normal mode), the process proceeds to step S3, and if it is the confirmation mode, the process proceeds to step S4.

In step S3, the control unit 11 acquires the measurement signal of the measurement unit 12 at the end of the first recording period, the second recording period, and the like (see time t3, t4, t7 in FIG. 4), and the calculation unit The recorded value is acquired by causing 19 to perform the calculation by the first calculation method. In step S4, the control unit 11 acquires the measurement signal of the measurement unit 12 at the end of the confirmation mode (see time t11 in FIG. 6), causes the calculation unit 19 to calculate by the second calculation method, and outputs the recorded value. get.

In step S5, the control unit 11 stores the recorded values acquired in steps S3 and S4 in the storage unit 15.

Next, with reference to FIG. 4, the operation of the weight measuring device 10 when the mode setting unit 18 cannot be switched to the confirmation mode will be described.

In FIG. 4, when the user turns on the fourth button 17d (power button) at time t0, the mode setting unit 18 is set to the normal mode, and the measurement unit 12 starts measurement.

At time t0, the empty container 20 is mounted on the weight measuring device 10. The weight of the container 20 is stored in the storage unit 15 in advance, and the measurement unit 12 outputs a value obtained by subtracting the weight of the container 20 as a measurement signal. Therefore, at time t0, the measuring unit 12 outputs, for example, a value (zero) corresponding to a weight of 0 kg (kilogram) as a measurement signal. The control unit 11 stores the acquired measurement signal in the storage unit 15.

At time t1, the control device 33 (see FIG. 1) transmits a control signal to the discharge device 40, and the discharge device 40 supplies the fluid 50 to the container 20. As a result, the value of the measurement signal output from the measurement unit 12 increases.

At time t2, the control device 33 transmits a control signal to the discharge device 40, and the supply of the fluid 50 from the discharge device 40 to the container 20 is stopped. As a result, the value of the signal output from the measuring unit 12 becomes a constant value.

At time t3, which is the end time of the first recording period, the control unit 11 determines that the first recording period has ended (see step S1 Yes in FIG. 3), and determines that the mode is not the confirmation mode (FIG. 3). See step S2 No in step S2). The control unit 11 transmits a control signal to the measurement unit 12 and acquires the measurement signal of the measurement unit 12 at time t3 (see step S3 in FIG. 3). Based on the control signal of the control unit 11, the calculation unit 19 performs a calculation by the first calculation method using the acquired measurement signal, and outputs the first recorded value. The control unit 11 stores the first recorded value in the storage unit 15 (see step S5 in FIG. 3). The first recorded value is a value corresponding to the difference between the measurement signal of the measurement unit 12 at the time t3 and the measurement signal (zero) of the measurement unit 12 at the time t0.

At time t4, which is the end time of the second recording period, the control unit 11 acquires the measurement signal of the measurement unit 12 at time t4. The calculation unit 19 performs a calculation by the first calculation method using the measurement signal of the measurement unit 12 at the time t4 and the measurement signal of the measurement unit 12 at the time t3, and outputs the second recorded value. The control unit 11 stores the second recorded value in the storage unit 15. In the period from time t3 to time t4, the second recorded value = 0 because the fluid 50 is not supplied to the container 20.

Based on the control signal of the control device 33, the fluid 50 is supplied from the discharge device 40 to the container 20 at time t5, and the supply of the fluid 50 from the discharge device 40 to the container 20 is stopped at time t6.

At time t7, the calculation unit 19 performs a calculation by the first calculation method and outputs a third recorded value. The third recorded value is a value corresponding to the difference between the measurement signal of the measurement unit 12 at the time t7 and the measurement signal of the measurement unit 12 at the time t4. The control unit 11 stores the third recorded value in the storage unit 15.

FIG. 5 is a diagram illustrating the operation of the weight measuring device when the mode setting unit 18 is switched to the confirmation mode. In the following description, the same reference numerals will be given to the same configurations as those shown in FIGS. 1 to 4, and duplicate description will be omitted.

In FIG. 5, the mode setting unit 18 is set to the normal mode at time t0 based on the control signal of the control unit 11, and the user presses the first button 17a at time t8 to switch from the normal mode to the confirmation mode. When the user presses the third button 17c at time t9, the confirmation mode is switched to the normal mode.

At times t8 to t9 when the mode setting unit 18 is set to the confirmation mode, the user can confirm the state of the weight measuring device 10 and the like. Specifically, for example, by operating the fifth button 17e used for detailed operation, the measurement signal stored in the storage unit 15, the first recorded value, the second recorded value ..., the integrated amount, Information such as the elapsed time can be displayed on the display unit 16 for confirmation, or the setting information of the device can be displayed on the display unit 16 for confirmation by operating the fifth button 17e. It is also possible to check the presence or absence of an abnormality by touching the weight measuring device 10, the container 20, the arm driving unit 32, and the like.

When the user touches the weight measuring device 10 or the like during the confirmation work, the noise component x1 may be mixed in the measurement signal output from the measuring unit 12.

Therefore, the control unit 11 controls so that the measurement signal output from the measurement unit 12 is not adopted from the time t8 to the time t9, which is the period during which the mode setting unit 18 is set to the confirmation mode. Specifically, the measurement signal output from the measurement unit 12 during the period set in the confirmation mode is not used for the calculation of the first recorded value, the second recorded value, etc., and is recorded in the storage unit 15. Control not to be performed or control not to be displayed on the display unit 16.

The time t4, which is the end time of the second recording period, is not included in the times t8 to t9 set in the confirmation mode. Therefore, the calculation unit 19 performs a calculation by the first calculation method using the measurement signal of the measurement unit 12 at the time t4 and the measurement signal of the measurement unit 12 at the time t3, and outputs the second recorded value.

In the embodiment shown in FIG. 5, since the control unit 11 controls so as not to adopt the measurement signal output from the measurement unit 12 during the period set in the confirmation mode, the influence of the noise component x1 is reduced. be able to.

FIG. 6 is another diagram illustrating the operation of the weight measuring device when the mode setting unit 18 is switched to the confirmation mode. In the following description, the same reference numerals will be given to the same configurations as those shown in FIGS. 1 to 5, and duplicate description will be omitted.

In FIG. 6, the mode setting unit 18 switches from the normal mode to the confirmation mode when the user presses the first button 17a at time t10, and switches from the confirmation mode to the normal mode when the user presses the third button 17c at time t11. Switch. During the period from time t10 to time t11 set in the confirmation mode, the measurement signal including the noise component x1 is output from the measurement unit 12.

In the embodiment shown in FIG. 6, the control unit 11 determines that the second recording period has ended at time t4, which is the end time of the second recording period (see step S1 Yes in FIG. 3), and the confirmation mode. (Refer to step S2 Yes in FIG. 3). Therefore, the control unit 11 acquires the measurement signal output from the measurement unit 12 at the time t11, which is the end time of the confirmation mode (see step S4 in FIG. 3), and causes the calculation unit 19 to use the second calculation method. The calculation is executed, and the calculated second recorded value is stored in the storage unit 15 (see step S5 in FIG. 3). The second recorded value is a value corresponding to the difference between the measurement signal of the measurement unit 12 at the time t11 and the measurement signal of the measurement unit 12 at the time t3.

At time t7, which is the end time of the third recording period, the calculation unit 19 executes the calculation by the first calculation method and outputs the third recording value. The third recorded value is a value corresponding to the difference between the measurement signal of the measurement unit 12 at the time t7 and the measurement signal of the measurement unit 12 at the time t11.

In the embodiment shown in FIG. 6, since the control unit 11 controls so as not to adopt the measurement signal output from the measurement unit 12 during the period set in the confirmation mode, the influence of the noise component x1 is reduced. be able to.

(Second Embodiment)

FIG. 7 is a timing chart illustrating the weight measuring device of the second embodiment. In the following description, the same reference numerals will be given to the same configurations as those shown in FIGS. 1 to 6, and duplicate description will be omitted.

For example, during the period from time t2 to time t5 in FIG. 4, since the fluid 50 is not supplied to the container 20, the measurement signal of the measuring unit 12 is a constant value, but in the embodiment shown in FIG. 7, the measurement signal is constant. Since the fluid 50 is constantly supplied from the discharge device 40, the measurement signal of the measurement unit 12 does not become a constant value and is constantly increasing.

In FIG. 7, the mode setting unit 18 is set to the normal mode at time t0, switches from the normal mode to the confirmation mode at time t22, and switches from the confirmation mode to the normal mode at time t24.

At time t21, which is the end time of the first recording period, the calculation unit 19 executes the calculation by the first calculation method and outputs the first recording value. The first recorded value is a value corresponding to the difference between the measurement signal of the measurement unit 12 at the time t21 and the measurement signal of the measurement unit 12 at the time t20.

The time t23, which is the end time of the second recording period, is included in the time t22 to the time t24, which is the period set in the confirmation mode. The calculation unit 19 calculates the second recorded value by the second calculation method. The second recorded value is a value corresponding to the difference between the measurement signal of the measurement unit 12 at the time t24 and the measurement signal of the measurement unit 12 at the time t21.

At time t25, which is the end time of the third recording period, the calculation unit 19 calculates the third recording value by the first calculation method. The third recorded value is a value corresponding to the difference between the measurement signal of the measurement unit 12 at the time t25 and the measurement signal of the measurement unit 12 at the time t24.

In the embodiment shown in FIG. 7, since the control unit 11 controls so that the measurement signal output from the measurement unit 12 is not adopted during the period set in the confirmation mode, the influence of the noise component x1 is reduced. be able to.

(Third Embodiment)

FIG. 8 is a flowchart for explaining the operation of the weight measuring device according to the third embodiment, and FIGS. 9 and 10 are timing charts for explaining the operation of the weight measuring device. In the present embodiment, the mode setting unit 18 can be set to an exchange mode (for example, a mode set when the fluid 50 measured by the measurement unit 12 is removed). In the following description, the same reference numerals will be given to the same configurations as those shown in FIGS. 1 to 7, and duplicate description will be omitted.

In step S11 of FIG. 8, the control unit 11 determines whether or not the first recording period, the second recording period, and the like have ended (see time t31, t34, and t35 in FIG. 9). If the recording period is over, the process proceeds to step S12, and if the recording period is not over, step S11 is repeated.

In step S12, the control unit 11 determines whether or not the mode setting unit 18 is in the exchange mode (see time t36 to t37 in FIG. 10). If it is not the exchange mode (if it is the normal mode), the process proceeds to step S13, and if it is the exchange mode, the process proceeds to step S14.

In step S13, the calculation unit 19 performs a calculation by the first calculation method using the measurement signal of the measurement unit 12 at the end of the first recording period, the second recording period, and so on, and outputs the recorded value. ..

In step S14, the calculation unit 19 performs a calculation by the third calculation method using the measurement signal of the measurement unit 12 at the start time of the exchange mode (see time t36 in FIG. 10), and outputs a recorded value.

In step S15, the control unit 11 stores the recorded values output in steps S13 and S14 in the storage unit 15.

Needless to say, the third embodiment shown in FIG. 8 can be combined with the first embodiment shown in FIG. In this case, in step S12, the control unit 11 proceeds to step S13 if the mode setting unit 18 is in the normal mode, proceeds to step S14 if it is in the exchange mode, and proceeds to step S4 in FIG. 3 if it is in the confirmation mode. ..

Next, the operation of the weight measuring device 10 when the mode setting unit 18 is switched to the exchange mode will be described with reference to FIG. 9.

In FIG. 9, the mode setting unit 18 is set to the normal mode at time t30, switches from the normal mode to the exchange mode at time t32, and switches from the exchange mode to the normal mode at time t33.

At time t31, which is the end time of the first recording period, the control unit 11 acquires the measurement signal of the measurement unit 12 (see step S13 in FIG. 8). The calculation unit 19 executes the calculation by the first calculation method and outputs the first recorded value. The first recorded value is a value corresponding to the difference between the measurement signal of the measurement unit 12 at the time t31 and the measurement signal of the measurement unit 12 at the time t30.

At time t32, the mode setting unit 18 switches to the exchange mode, so that the control unit 11 causes the calculation unit 19 to calculate the value Y1 before the start of the exchange mode. The value Y1 is a value corresponding to the difference between the measurement signal of the measurement unit 12 at the start time t32 of the exchange mode and the measurement signal of the measurement unit 12 at the time t31 which is the start time of the second recording period.

From time t32 to time t33 set in the exchange mode, the user takes down the container 20 filled with the fluid 50 from the measuring unit 12, and places an empty container 20 on the measuring unit 12 for an exchange operation. At the time of replacement work, the signal output from the measuring unit 12 may be mixed with the noise component x2.

Therefore, the control unit 11 controls the mode setting unit 18 so as not to adopt the measurement signal output from the measurement unit 12 from the time t32 to the time t33, which is the period set in the exchange mode. Specifically, the measurement signal output from the measurement unit 12 during the period set in the exchange mode is not used for the calculation of the first recorded value, the second recorded value, etc., and is recorded in the storage unit 15. Control not to be performed or control not to be displayed on the display unit 16.

At time t33, the control unit 11 controls the measurement unit 12 so that the measurement signal output from the measurement unit 12 becomes zero (a value corresponding to a weight of 0 kg). This is because the fluid 50 measured by the measuring unit 12 is removed in the exchange mode.

At time t34, the control unit 11 causes the calculation unit 19 to calculate the value Y2 after the end of the exchange mode, and causes Y1 and the value Y2 to be added. The value Y2 is a value corresponding to the difference between the measurement signal of the measurement unit 12 at the time t34, which is the end time of the second recording period, and the measurement signal of the measurement unit 12 at the end time t33 of the exchange mode. The value obtained by adding Y1 and the value Y2 is the second recorded value.

At time t35, which is the end time of the third recording period, the calculation unit 19 executes the calculation by the first calculation method and outputs the third recording value. The third recorded value is a value corresponding to the difference between the measurement signal of the measurement unit 12 at the time t35 and the measurement signal of the measurement unit 12 at the time t34.

In the embodiment shown in FIG. 9, the control unit 11 controls so as not to adopt the signal output from the measurement unit 12 during the period from time t32 to time t33, which is the period set in the exchange mode. It is possible to reduce the influence of the noise component x2 generated by the replacement work of the container 20 by the user.

Next, the operation of the weight measuring device 10 when the mode setting unit 18 is switched to the exchange mode will be described with reference to FIG.

In FIG. 10, the mode setting unit 18 is set to the normal mode at time t30, switches from the normal mode to the exchange mode at time t36, and switches from the exchange mode to the normal mode at time t37.

At the time t34, the control unit 11 determines that the time t34, which is the end time of the second recording period, is included in the time t36 to the time t37, which is the period set in the exchange mode. The second recorded value is calculated by the calculation method (see step S14 in FIG. 8).

Specifically, the arithmetic unit 19 secondly sets a value corresponding to the difference between the measurement signal of the measurement unit 12 at the start time t36 of the exchange mode and the measurement signal of the measurement unit 12 at the start time t31 of the second recording period. Output as a recorded value. The control unit 11 stores the second recorded value in the storage unit 15 (see step S15 in FIG. 8).

At the end time t37 of the exchange mode, the control unit 11 controls the measurement unit 12 so that the measurement signal output from the measurement unit 12 becomes zero.

At time t35, which is the end time of the third recording period, the calculation unit 19 executes the calculation by the first calculation method and outputs the third recording value. The third recorded value is a value corresponding to the difference between the measurement signal of the measuring unit 12 at the end time t35 of the third recording period and the measurement signal of the measuring unit 12 at the end time t37 of the exchange mode.

In the embodiment shown in FIG. 10, the control unit 11 controls so as not to adopt the signal output from the measurement unit 12 during the period from time t36 to time t37, which is the period set in the exchange mode. It is possible to reduce the influence of the noise component x2 generated by the replacement work of the container 20 by the user.

(Fourth Embodiment)

FIG. 11 is a timing chart illustrating the operation of the weight measuring device of the fourth embodiment. In the following description, the same reference numerals will be given to the same configurations as those shown in FIGS. 1 to 10, and duplicate description will be omitted.

In FIG. 11, the period setting unit 13 sets the first recording period, the second recording period, and the like every 10 minutes after the time t40, and 10 minutes from the time t40, as in the above-described embodiment. The first warning period, the second warning period, and the like are set each time.

It goes without saying that the warning period set by the period setting unit 13 is arbitrary, and can be, for example, 5 minutes, 10 minutes, 20 minutes intervals, 30 minutes intervals, 60 minutes intervals, and the like. Further, the recording period and the warning period may be periods of the same length or periods of different lengths from each other. In the present embodiment, the recording period and the warning period may start or end at the same time, but the recording period and the warning period are set independently, and the recording period and the warning period are synchronized. None (No processing has been performed to timely match the operation related to the recording period with the operation related to the warning period).

The storage unit 15 stores a large amount warning value Y100 (see FIG. 11) and a small amount warning value Y200 (see FIG. 11). The large amount warning value Y100 is a value corresponding to the maximum value of the weight of the fluid 50 supplied to the container 20 in each of the first warning period, the second warning period, and so on. The small amount warning value Y200 is a value corresponding to the minimum value of the weight of the fluid 50 supplied to the container 20 in each of the first warning period, the second warning period, and so on.

The control unit 11 monitors the measurement signal output from the measurement unit 12 for each of the first warning period, the second warning period, and so on, and supplies the measurement signal from the start of the first warning period, the second warning period, and so on. When the weight of the fluid 50 exceeds the large amount warning value Y100, the display unit 16 is made to display that the large amount warning value Y100 has been exceeded.

By appropriately setting the large amount warning value Y100 and issuing a warning when the large amount warning value Y100 is exceeded, for example, a problem that the fluid 50 is excessively supplied from the discharge device 40 (see FIG. 1) in a short time, etc. Can be detected at an early stage, and the problem that the fluid 50 overflows from the container 20 can be reduced.

Similarly, the control unit 11 of the fluid 50 supplied during the first warning period (within the period from the start time of the first warning period to the end time of the first warning period), within the second warning period, and so on. When the weight is less than the small amount warning value Y200, the display unit 16 is made to display that the small amount warning value Y200 is not reached after the end of the first warning period, the second warning period, and so on.

By appropriately setting the small amount warning value Y200 and issuing a warning when the small amount warning value Y200 is not reached, it is possible to detect at an early stage, for example, a problem that the fluid 50 is not properly supplied due to clogging of the discharge device 40. , It is possible to reduce manufacturing defects caused by manufacturing equipment.

At the time t40 shown in FIG. 11, the mode setting unit 18 is set to the normal mode. The period setting unit 13 starts the first recording period and the first warning period at time t40.

In the period from the time t40 to the time t41, the calculation unit 19 calculates the weight of the fluid 50 supplied from the start time t40 of the first warning period using the measurement signal output from the measurement unit 12. The control unit 11 determines that the weight of the fluid 50 supplied from the start time t40 of the first warning period does not exceed the large amount warning value Y100, and does not cause the display unit 16 to display the warning.

At time t41, the period setting unit 13 ends the first recording period and the first warning period, and starts the second recording period and the second warning period. The calculation unit 19 calculates the weight of the fluid 50 supplied within the period from the start time t40 of the first warning period to the end time t41 of the first warning period using the measurement signal output from the measurement unit 12.

The control unit 11 stores the first recorded value acquired in the first recording period in the storage unit 15, and determines that the weight of the fluid 50 supplied during the first warning period is a small amount warning value Y200 or more. This is done, and the display unit 16 does not display a warning.

In the period from the time t41 to the time t44, the calculation unit 19 calculates the weight of the fluid 50 supplied from the start time t41 of the second warning period. The control unit 11 determines that the large amount warning value Y100 is not exceeded, and does not cause the display unit 16 to display a warning.

At time t44, the control unit 11 determines that the weight of the fluid 50 supplied to the container 20 exceeds the large amount warning value Y100 from the start time t41 of the second warning period, and causes the display unit 16 to display a warning. ..

At time t42, the period setting unit 13 ends the second recording period and the second warning period, and starts the third recording period and the third warning period. The calculation unit 19 calculates the weight of the fluid 50 supplied within the period from the start time t41 to the end time t42 of the second warning period. The control unit 11 determines that the weight of the fluid 50 supplied within the second warning period is the small amount warning value Y200 or more, and does not cause the display unit 16 to display the warning.

At time t43, the period setting unit 13 ends the third recording period and the third warning period, and starts the fourth recording period and the fourth warning period. The calculation unit 19 calculates the weight of the fluid 50 supplied within the period from the start time t42 to the end time t43 of the third warning period. The control unit 11 determines that the weight of the fluid 50 supplied within the third warning period is less than the small amount warning value Y200, and causes the display unit 16 to display a warning.

In the embodiment shown in FIG. 11, since the control unit 11 can give a warning that the large amount warning value Y100 has been exceeded and a warning that the small amount warning value Y200 has not been reached, the fluid 50 is appropriate for the container 20. It is possible to easily confirm the defects that are not supplied to.

In the above-described embodiment, the warning display by the display unit has been described as an example, but the description is not limited to this. For example, the weight measuring device 10 may be provided with a warning light and a buzzer, and instead of the warning display by the display unit 16, a warning light emission and a warning sound may be generated.

(Fifth Embodiment)

FIG. 12 is a timing chart illustrating the operation of the weight measuring device according to the fifth embodiment. In the following description, the same reference numerals will be given to the same configurations as those shown in FIGS. 1 to 11, and duplicate description will be omitted.

In FIG. 12, the mode setting unit 18 is set to the normal mode at the time t40, switches from the normal mode to the confirmation mode at the time t45, and switches from the confirmation mode to the normal mode at the time t46.

At time t41, the period setting unit 13 ends the first recording period and the first warning period, and starts the second recording period and the second warning period. However, since the confirmation mode is set from the time t45 to the time t46, the period setting unit 13 cancels the second warning period started at the time t41 and starts the second warning period from the time t46 when the confirmation mode ends. ..

At time t44, the control unit 11 determines that the weight of the fluid 50 supplied to the container 20 exceeds the large amount warning value Y100 from the start time t46 of the second warning period, and causes the display unit 16 to display a warning. ..

At time t47, the period setting unit 13 ends the second warning period and starts the third warning period. The length of each of the first to third warning periods shown in FIG. 11 and the length of each of the first to third warning periods shown in FIG. 12 are the same.

In the embodiment shown in FIG. 12, the period setting unit 13 does not set the warning period during the confirmation mode, and starts the warning period at the time t46 when the confirmation mode ends. Therefore, it is possible to reduce the problem of giving an erroneous warning due to the influence of the noise component x1 that occurs during the period set in the confirmation mode, and even when the confirmation mode is set, the large amount of warning value Y100 can be appropriately set. It is possible to give a warning that the value exceeds Y200 and a warning that the small amount warning value Y200 is not reached.

In the above-described embodiment, when the confirmation mode is set, the warning period is started at the time when the confirmation mode ends, but the same applies to the case where the exchange mode is set. That is, for example, in FIG. 12, when the mode setting unit 18 is set to the exchange mode at the time t45 and is set to the normal mode at the time t46, the period setting unit 13 does not set the warning period during the exchange mode. , Set so that the second warning period starts at the end time t46 of the exchange mode.

(Modification example)

The storage unit 15 may store the maximum weight. The maximum weight is the weight corresponding to the maximum amount of fluid 50 that can be accommodated in the container 20. In this case, the calculation unit 19 calculates the integrated amount from the start of the operation of the weight measuring device 10 to the present. The control unit 11 can cause the display unit 16 to display a warning when the integrated amount is close to the maximum weight (for example, when the integrated amount is 95% or more of the maximum weight).

In addition, the length of the period set in the confirmation mode is longer than the recording period length, and the entire period from the start time of the recording period to the end time of the recording period is included in the period set in the confirmation mode. If so, the recorded value of the recording period included in the confirmation mode can be zero.

In addition, the length of the period set in the confirmation mode is longer than the recording period length, and the entire period from the start time of the recording period to the end time of the recording period may be included in the period set in the confirmation mode. If there is, the control unit 11 can forcibly end the confirmation mode at a predetermined timing. This is because the user may forget to cancel the confirmation mode.

Similarly, the length of the period set in the exchange mode is longer than the recording period length, and the entire period from the start time of the recording period to the end time of the recording period is included in the period set in the exchange mode. If so, the recorded value of the recording period included in the exchange mode can be zero.

Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other aspects considered within the scope of the technical idea of the present invention are also included within the scope of the present invention.

According to the present invention, it is possible to provide a weight measuring device capable of suitably measuring the weight of an object, and a manufacturing device using the weight measuring device.

10 Weight measuring device 12 Measuring unit 13 Period setting unit 19 Calculation unit 18 Mode setting unit 11 Control unit 1 Manufacturing equipment

Claims (9)

A measuring unit that measures the weight of an object and outputs a measurement signal,
A period setting unit that sets the first period and the second period,
A calculation unit that calculates an operation value using the measurement signal output from the measurement unit for each of the first period and the second period.
A mode setting unit capable of setting a first mode and a second mode different from the first mode,
It has a control unit that controls the calculation unit to perform an operation according to the setting of the mode setting unit.
The control unit
When the mode setting unit is set to the first mode at the start time of the first period and the mode setting unit is set to the first mode at the end time of the first period, the first period The calculated value of the first period is calculated using the measurement signal output from the measurement unit at the start time and the measurement signal output from the measurement unit at the end time of the first period. Control the calculation unit
When the mode setting unit is set to the first mode at the start time of the first period and the mode setting unit is set to the second mode at the end time of the first period, the first period The calculated value of the first period is calculated using the measurement signal output from the measurement unit at the start time and the measurement signal output from the measurement unit at the end time of the second mode. Control the calculation unit
When the mode setting unit is set to the second mode at the start time of the first period and the mode setting unit is set to the first mode at the end time of the first period, the second mode is set. The calculated value of the first period is calculated using the measurement signal output from the measurement unit at the end time and the measurement signal output from the measurement unit at the end time of the first period. A weight measuring device that controls the calculation unit . The weight measuring device according to claim 1 .
The second mode is a weight measuring device which is a mode set when checking the state of the device. The weight measuring device according to claim 1 or 2.
The control unit
The mode setting unit is set to the first mode at the start time of the first period, then the mode setting unit is set to the second mode, and then the mode setting unit is set to the end time of the first period. Is set to the first mode, the measurement signal output from the measurement unit at the start time of the first period and the measurement signal output from the measurement unit at the end time of the first period. A weight measuring device that controls the calculation unit so as to calculate the calculation value in the first period using and. The weight measuring device according to any one of claims 1 to 3.
The control unit
When the mode setting unit is set to the first mode at the start time of the first period and the mode setting unit is set to the first mode at the end time of the first period, the first period The calculation of the first period using a value corresponding to the difference between the measurement signal output from the measurement unit at the end time and the measurement signal output from the measurement unit at the start time of the first period. Control the calculation unit to calculate the value,
When the mode setting unit is set to the first mode at the start time of the first period and the mode setting unit is set to the second mode at the end time of the first period, the second mode is set. The calculation of the first period using a value corresponding to the difference between the measurement signal output from the measurement unit at the end time and the measurement signal output from the measurement unit at the start time of the first period. Control the calculation unit to calculate the value,
When the mode setting unit is set to the second mode at the start time of the first period and the mode setting unit is set to the first mode at the end time of the first period, the first period The calculation in the first period using a value corresponding to the difference between the measurement signal output from the measurement unit at the end time and the measurement signal output from the measurement unit at the end time of the second mode. A weight measuring device that controls the calculation unit so as to calculate a value. The weight measuring device according to claim 4.
The mode setting unit can set a third mode different from the first mode and the second mode.
The control unit
When the mode setting unit is set to the first mode from the start time to the end time of the first period, the measurement signal output from the measurement unit at the end time of the first period and the first The calculation unit is controlled so as to calculate the calculation value of the first period using the value corresponding to the difference from the measurement signal output from the measurement unit at the start time of the period.
The mode setting unit is set to the first mode at the start time of the first period, then the mode setting unit is set to the third mode, and then the mode setting unit is set to the end time of the first period. Is set to the first mode, the measurement signal output from the measurement unit at the start time of the third mode and the measurement signal output from the measurement unit at the start time of the first period. The calculation so as to calculate the calculated value in the first period using the value corresponding to the difference between the above and the value corresponding to the measurement signal output from the measuring unit at the end time of the first period. Control the part,
When the mode setting unit is set to the first mode at the start time of the first period and then the mode setting unit is set to the third mode until the end time of the first period, the third mode is set. The value corresponding to the difference between the measurement signal output from the measurement unit at the start time of the mode and the measurement signal output from the measurement unit at the start time of the first period is used for the first period. The calculation unit is controlled so as to calculate the calculation value, and the calculation unit is controlled.
When the mode setting unit is set to the third mode at the start time of the first period, and then the mode setting unit is set to the first mode until the end time of the first period, the first mode is set. A weight measuring device that controls the calculation unit so as to calculate the calculation value of the first period using the value corresponding to the measurement signal output from the measurement unit at the end time of the period . The weight measuring device according to claim 5 .
The third mode is a weight measuring device which is a mode set when the object measured by the measuring unit is removed. A measuring unit that measures the weight of an object and outputs a measurement signal,
A period setting unit that sets the first period and the second period,
A calculation unit that calculates an operation value using the measurement signal output from the measurement unit for each of the first period and the second period.
A mode setting unit that can set a first mode and a third mode different from the first mode,
It has a control unit that controls the calculation unit to perform an operation according to the setting of the mode setting unit.
The control unit
When the mode setting unit is set to the first mode from the start time to the end time of the first period, the measurement signal output from the measurement unit at the end time of the first period and the first The calculation unit is controlled so as to calculate the calculation value of the first period using the value corresponding to the difference from the measurement signal output from the measurement unit at the start time of the period.
The mode setting unit is set to the first mode at the start time of the first period, then the mode setting unit is set to the third mode, and then the mode setting unit is set to the end time of the first period. Is set to the first mode, the measurement signal output from the measurement unit at the start time of the third mode and the measurement signal output from the measurement unit at the start time of the first period. The calculation so as to calculate the calculated value in the first period using the value corresponding to the difference between the above and the value corresponding to the measurement signal output from the measuring unit at the end time of the first period. Control the part,
When the mode setting unit is set to the first mode at the start time of the first period and then the mode setting unit is set to the third mode until the end time of the first period, the third mode is set. The value corresponding to the difference between the measurement signal output from the measurement unit at the start time of the mode and the measurement signal output from the measurement unit at the start time of the first period is used for the first period. The calculation unit is controlled so as to calculate the calculation value, and the calculation unit is controlled.
When the mode setting unit is set to the third mode at the start time of the first period, and then the mode setting unit is set to the first mode until the end time of the first period, the first mode is set. A weight measuring device that controls the calculation unit so as to calculate the calculation value of the first period using the value corresponding to the measurement signal output from the measurement unit at the end time of the period . The weight measuring device according to claim 7 .
The third mode is a weight measuring device which is a mode set when the object measured by the measuring unit is removed. A manufacturing apparatus having the weight measuring device according to any one of claims 1 to 8 .

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