JP6641744B2 - Weighing program, weighing device, weighing method - Google Patents

Description

  The present invention relates to a program, an apparatus, and a method for measuring the contents of a container.

  2. Description of the Related Art Conventionally, a technique using a weight sensor is known as one of the techniques for measuring the contents of a container. That is, the weight of the content is grasped from the magnitude of the force or pressure detected by the weight sensor, and the remaining amount is calculated. Examples of the type of the weight sensor include a strain gauge type, a capacitance type, and a differential transformer type (see Patent Document 1). However, in this method, the weight is measured by applying a pressure corresponding to the remaining amount of the content to the weight sensor, and the position of the container and the arrangement position of the weight sensor at the time of the measurement are easily limited. For example, if the container is placed at a position off the top of the weight sensor, the contents cannot be weighed. Even if the weight sensor is attached to the container itself, the attachment location is limited to the bottom surface of the container.

  On the other hand, a method of weighing contents using a vibration sensor such as a microphone or an acceleration sensor instead of a weight sensor has also been proposed. For example, it detects a frequency of a fundamental wave component included in vibration generated when a container is hit, and estimates a remaining amount in the container corresponding to the frequency (see Patent Document 2). In this method, compared to the weighing method using a weight sensor, the position of the container at the time of weighing and the arrangement position of the sensor are less restricted, and even if the vibration sensor is attached to a place other than the bottom surface of the container, Vibration can be detected.

JP 08-161615 A JP-A-07-333037

  However, the weighing method in which a container is hit and a vibration is forcibly applied is a method suitable for a container (eg, a metal container) having such a rigidity that it is not deformed even if it is hit. ， It is difficult to apply to PET bottles. Further, when a container having a lower rigidity than a metal is to be measured, it is also difficult to distinguish between vibration of the container itself and noise vibration due to disturbance (for example, vibration of a hand grasping the container). This hinders proper extraction of the fundamental wave component contained in the vibration of the container, and as a result, the accuracy of measuring the remaining amount may be reduced.

  One of the objects of the present invention has been made in view of the above problems, and an object thereof is to provide a weighing program, a weighing device, and a weighing method with improved weighing accuracy. Further, the present invention is not limited to this object, and it is another effect of the present invention that it is an operation effect derived from each configuration shown in the “embodiment for carrying out the invention” described later, and that it has an operation effect that cannot be obtained by the conventional technology. It can be positioned as a purpose.

In the weighing program described below, information specifying the vibration of the container is obtained, and the start time of the vibration of the container and the second time at which the vibration of the container is considered to have stopped are determined. Further, the vibration state of the container is specified from the information acquired within a predetermined period from a first time after a predetermined time from the start of the vibration to a second time at which the vibration is considered to have stopped. Further, the amount corresponding to the vibration state is calculated from the relationship between the vibration state of the container and the amount of the contents of the container. These processes are executed by a computer.

  The contents of the container can be accurately measured.

It is a perspective view showing an example of a weighing device. FIG. 3 is a diagram illustrating a hardware configuration of the weighing device. It is a block diagram which shows the function of a weighing program. (A)-(C) are graphs illustrating changes in acceleration of vibration. (A)-(C) are graphs illustrating changes in acceleration of vibration. (A), (B) is a figure which illustrates the remaining amount estimation table. It is a flowchart example for demonstrating a weighing method. It is a flowchart example for demonstrating a weighing method. It is a flowchart example for setting a remaining amount estimation table.

  A weighing device, a weighing method, and a weighing program as an embodiment will be described with reference to the drawings. However, the embodiments described below are merely examples, and there is no intention to exclude various modifications and application of techniques not explicitly described in the embodiments. That is, the present embodiment can be implemented with various modifications (combinations of the embodiments and the modifications) without departing from the spirit of the present embodiment.

[1. Overview]
In the weighing device, the weighing method, and the weighing program of the present embodiment, the amount of the contents contained in the container is measured. The “container” here includes a metal container, a paper cup, a paper pack, a plastic bottle, a porcelain, a synthetic resin cup, an aluminum vacuum pack, and the like, and the shape and rigidity thereof are irrelevant. The term "contents" used herein includes not only liquids such as water, juice, chemicals, seasonings, coffee drinks, low-malt beer, but also liquid foods, sols, gels (jelly-like drinks), and the like.

  The weighing method specifies the vibration state of the container (that is, the vibration state of the entire container including the contents) based on the motion state immediately before the vibration of the container stops, and leaves the contents corresponding to the vibration state. Calculate the amount (amount). The term "immediately before" includes a period in which the vibration of the container is naturally attenuated with time. It is preferable that the state in which the container is forcibly excited is excluded from the “vibration state of the container” here.

  For example, in a state where the container is in use or in a moving state, the container or the moving person causes the container to vibrate, and a vibration component as a disturbance due to a force applied from the outside becomes dominant. That is, it is difficult to accurately specify the vibration state of the container. On the other hand, in the period from immediately after the container is placed on the desk to immediately before the vibration stops, the liquid generated by the disturbance and the vibration of the container are attenuated without disturbance. The characteristics of the vibration during this period are affected by the initial vibration state at the start of the period, the shape of the container, the liquid quality, the liquid amount, and the like. Here, the sloshing phenomenon in which the liquid in the container resonates at a specific frequency depending on the container shape, liquid quality, liquid amount, and the like, and the natural frequency of the pendulum motion with the container bottom as a fulcrum, varies with the center of gravity, which varies with the liquid amount. In consideration of the influence, even if various frequency components exist in the initial vibration state, components other than the natural frequency rapidly attenuate as the end point of the period approaches, and the shape of the container, liquid quality, liquid volume, etc. It becomes easier to observe the effect of In this way, by specifying the vibration state of the container in a relatively stable state after the influence of the disturbance is reduced, the correlation between the vibration state of the container and the amount of the contents is strengthened, and the weighing accuracy of the contents is increased. Is improved.

  The "vibration state" mentioned here includes the state of the maximum frequency component (primary natural frequency) of the vibration, the state of its higher-order frequency component (secondary, tertiary natural frequency), and the change in the amplitude of the vibration. (Maximum amplitude, reference amplitude, attenuation rate). For example, a primary natural frequency is specified from the damped vibration of the container, and the amount of contents corresponding to the natural frequency is calculated. Alternatively, the damping rate of the damped vibration is specified, and the amount of the content corresponding to the damping rate is calculated. It is assumed that the relationship between the vibration state of the container and the amount of contents is preset in the form of a table, a map, a mathematical expression, a function, or the like through tests and experiments.

The natural frequency of the sloshing (the resonance phenomenon of the contents caused by the swinging of the container) is a value corresponding to the horizontal dimension and diameter of the container and the height (water depth) of the liquid. Further, the amplitude and the decay rate (decay time) of the sloshing vibration are values according to the mass and the viscosity of the contents. Therefore, if the shape of the container and the type (density, viscosity) of the contents are known, the remaining state of the contents corresponding to the vibration state is determined by specifying the vibration state such as the natural frequency and the damping rate. It is possible to calculate.
Further, in the case of a vertically long container or the like having a high viscosity, the influence of the distance between the bottom which is the fulcrum and the center of gravity of the container containing the liquid becomes dominant according to the same principle as that of the metronome (pendulum). Therefore, by specifying the natural frequency, the center of gravity of the container containing the liquid is calculated, and the center of gravity of the liquid is calculated from the known center of gravity of the container. Further, the remaining amount of the contents can be calculated from the known container shape and the center of gravity of the liquid.

  As information for grasping the motion state of the container, information that specifies the vibration of the container, such as position information, speed information, acceleration information, angle information, angular velocity information, and acceleration information, can be used. These pieces of information can be obtained by attaching a displacement sensor, an acceleration sensor, a gyro sensor, and the like to the container. These sensors may be built in a cap of a PET bottle type container, for example, or may be built in a cover in which the container is stored. Further, the container may be fixed by sandwiching the container with a clip to which the sensor is fixed. Alternatively, the sensor may be fixed to a belt wound around the outer periphery of the container, or the sensor may be attached to the container or the container cover using a hook-and-loop fastener or an adhesive tape.

  Further, similarly to the above-described sensor, the weighing device may be incorporated in the cap or cover of the container, or the weighing device may be provided separately from the container. When the sensor and the weighing device are provided separately, it is preferable to connect them communicably by wire or wirelessly. The function as the weighing device can be realized using an arbitrary computer. Therefore, for example, some or all of the functions of the weighing device may be incorporated in a smartphone or a portable information processing device, or may be implemented in a server or a workstation on a network.

[2. hardware]
FIG. 1 is a perspective view showing a weighing device 20 as an embodiment and a container 30 containing contents 37 to be weighed. Here, a weighing system in which a sensor is built in the cap 32 of the container 30 and the function as the weighing device 20 is mounted on a smartphone is illustrated.
The weighing device 20 executes the weighing program 11 according to the embodiment, and is a target to which the weighing method according to the embodiment is applied. Each time the container 30 is vibrated, the weighing device 20 specifies the vibration state immediately before the vibration stops, and calculates the remaining amount of the contents 37 corresponding to the specified vibration state. In addition, the amount of consumption (consumption, intake) of the contents 37 is calculated by comparison with the remaining amount before the vibration occurs. These calculation results may be notified to the user each time, and the results may be recorded.

[2-1. Measuring device]
The weighing device 20 includes a control device 40 as a computer, a recording medium drive 21, a storage device 22, a display device 23, an input device 24, and a communication device 25, and a power source (not shown) such as a battery or a power supply cable. It operates with power supply from. The weighing function is realized as one of the programs executed by the smartphone (the weighing program 11), and is executed by the control device 40.
FIG. 2 is a diagram illustrating a hardware configuration of the weighing system. The control device 40 includes a processor 41 (central processing unit), a memory 42 (main memory, main storage device), an auxiliary storage device 43, an interface device 44, and the like, and is communicably connected to each other via an internal bus 45. You.

  The processor 41 is a central processing unit including a control unit (control circuit), an arithmetic unit (arithmetic circuit), a cache memory (register group), and the like. The memory 42 is a storage device that stores programs and data during work, and includes, for example, a ROM (Read Only Memory) and a RAM (Random Access Memory). On the other hand, the auxiliary storage device 43 is a memory device that stores data and firmware that are held for a longer period than the memory 42, and includes, for example, a nonvolatile memory such as a flash memory or an EEPROM (Electrically Erasable Programmable Read-Only Memory). It is included in this. The interface device 44 controls input / output (I / O) between the control device 40 and the outside. The control device 40 is connected to the recording medium drive 21, the storage device 22, the display device 23, the input device 24, the communication device 25, and the like via the interface device 44.

  The recording medium drive 21 is a reading device that reads information recorded and stored on a recording medium 26 (removable medium) such as an optical disk or a semiconductor memory. The storage device 22 is a memory device that stores data and programs stored for a long period of time, and includes, for example, a nonvolatile memory such as a flash memory or an EEPROM. The weighing program 11 executed by the control device 40 may be recorded and stored in the memory 42, for example, or may be recorded and stored in the auxiliary storage device 43 and the storage device 22. Alternatively, a program may be recorded and stored on the recording medium 26, and the weighing program 11 written on the recording medium 26 may be read into the control device 40 via the recording medium drive 21.

The display device 23 is one of devices for visually outputting the processing result of the control device 40, and is, for example, a liquid crystal display (LCD, Liquid Crystal Display) or an organic EL display (OELD, Organic Electro-Luminescence Display). is there. The display device 23 can output information on the container 30 and the contents 37 to be weighed, and can also output the weighing result of the weighing program 11.
The input device 24 is one of pointing devices for inputting a signal to the control device 40. The input device 24 shown in FIG. 1 is a touch panel mounted on the surface of the display device 23 in a superimposed state. When the weighing device 20 is provided with a physical key, the physical key may be used as the input device 24. The input device 24 can be used for selecting and resetting information on the container 30 and the contents 37 to be weighed.
The communication device 25 is a device for performing communication between the cap 32 of the container 30 and the weighing device 20, and has a function of receiving at least data (information specifying vibration of the container 30) transmitted from the cap 32 side. have.

[2-2. cap]
A cap 32 is attached to the upper end of the container 30. The cap 32 is provided with a mounting mechanism 31 in which a screw thread or a screw groove to be screwed with the spout of the container 30 is formed. Further, an acceleration sensor 33, a type storage device 35, and a cap communication device 36 are built in the upper portion of the mounting mechanism 31, and operate by receiving power supply from a power source (not shown) (for example, a button type battery or a battery).

The acceleration sensor 33 is an acceleration detection device that detects acceleration of vibration, and detects acceleration in three axes (x-axis, y-axis, and z-axis) that are coordinate axes fixed to the cap 32. The acceleration information detected here is transmitted to the weighing device 20 via the cap communication device 36 and the communication device 25 described below. The acceleration information (information for specifying the vibration of the container 30) transmitted to the weighing device 20 may be at least any one of the accelerations in three axial directions, but preferably includes a horizontal component. This is information on acceleration. For example, if the y-axis direction is a vertical up-down direction, it is preferable to transmit acceleration information in the x-axis direction or the z-axis direction to the measuring device 20, and the acceleration in the x-axis direction and the acceleration in the z-axis direction are combined. It is preferable to transmit acceleration information [for example, sqrt (x ² + y ² )] to the weighing device 20.

  The type storage device 35 is a storage device for storing various data, and is, for example, a ROM, a RAM, a nonvolatile memory, or the like. In the type storage device 35, information on the container 30 to which the cap 32 is attached (that is, the container 30 to be measured) and the contents 37 are recorded in advance. Hereinafter, such information is referred to as “metric information”. The measurement target information is transmitted to the measurement device 20 together with the above-described acceleration information, and is used when selecting a table in which the relationship between the vibration state of the container 30 and the amount of the contents 37 is specified. When the type storage device 35 is a rewritable storage device, the above-described acceleration information may be temporarily recorded and stored here.

  When the combination of the container 30 and the contents 37 does not change, the table in which the relationship between the vibration state of the container 30 and the amount of the contents 37 is not changed, so that the type storage device 35 can be omitted. it can. Also, when the user inputs the weighing target information from the input device 24, the type storage device 35 can be omitted.

  The cap communication device 36 is a device for communicating with the weighing device 20 and has a function of transmitting at least information for specifying the vibration of the container 30. The type and standard of communication are arbitrary, and may be wired communication or wireless communication. The acceleration information detected by the acceleration sensor 33 is transmitted to the weighing device 20 via the cap communication device 36 in real time. Alternatively, data recorded on the type storage device 35 is transmitted to the weighing device 20 via the cap communication device 36.

[3. software]
FIG. 3 is a block diagram for explaining the processing content of the weighing program 11 executed by the processor 41 of the control device 40. These processing contents are recorded as application programs in the storage device 22, the recording medium 26, the auxiliary storage device 43, and the like, and are developed on the memory 42 and executed. When the processing contents executed here are functionally classified, the weighing program 11 includes a data acquisition unit 1, a buffer unit 2, a determination unit 3, a vibration state identification unit 4, a database unit 7, a remaining amount calculation unit 8, A quantity estimator 9 and a monitor 10 are provided.

[3-1. Data acquisition section]
The data acquisition unit 1 (acquisition unit) acquires acceleration information transmitted from the cap 32 side. Here, at least information for specifying the vibration of the container 30 is obtained. When the measurement target information recorded in the type storage device 35 on the cap 32 side is transmitted, the data acquisition unit 1 also acquires the measurement target information. The acceleration information obtained here is transmitted to the buffer unit 2. The measurement target information is transmitted to the database unit 7, the monitor unit 10, the consumption estimation unit 9, and the like as needed.

[3-2. Buffer section]
The buffer unit 2 (buffer storage unit) is a ring buffer that temporarily stores and stores the data acquired by the data acquisition unit 1. Here, the acceleration information of ₂ minutes nearest buffer period T is stored as time-series data representing the history of vibration. The width of the buffer period T ₂ are, can be set arbitrarily at the maximum capacity the range of the ring buffer may be a preset fixed width, variable width is set according to the contents of the acceleration information There may be.

[3-3. Judgment unit]
The determination unit 3 determines the start and end of the vibration of the container 30 and the respective times based on the data stored in the buffer unit 2. Here, the vibration in the container 30 is determined to have occurred when the dynamic determination condition is satisfied, the time is regarded as the start time S ₀ of the vibration. Further, it is determined that the vibration of the container 30 has stopped when the stationary determination condition is satisfied while the motion determination condition is satisfied. At this time, considered from the time the least static determination condition is satisfied, the vibration at the time of going back by _one minute predetermined time T is determined that was stable, the predetermined time T ₁ before the time and the end time S ₂ of the vibration It is. Information on the start time and end time of the vibration determined here is transmitted to the vibration state specifying unit 4.

The motion determination condition is that one of the following conditions 1 to 3 is satisfied, for example. The “magnitude of acceleration change” in the following conditions is the absolute value of the difference between the previous value and the current value of the acceleration detected by the acceleration sensor 33, and corresponds to the absolute value of the time change gradient of the acceleration. I do.
Condition 1. 1. The magnitude of the change in acceleration in the x-axis direction is _{equal to} or greater than the threshold Th1x. Condition 2. The magnitude of the acceleration change in the y-axis direction is _{equal to} or greater than the threshold _Th1y . The magnitude of the acceleration change in the z-axis direction is _{equal to} or greater than the threshold Th _1z

Further, the stationary judgment condition, after the dynamic determination condition is satisfied, for example, a state where one is established the following conditions 4-6 is that continues for a predetermined time above T _1.
Condition 4. magnitude threshold acceleration change in the x-axis direction Th _2x (≦ Th _1x) or less is condition 5. _{5. The} magnitude of the acceleration change in the y-axis direction is equal to or smaller than a threshold _Th2y (≦ _Th1y ). The magnitude of the acceleration change in the z-axis direction is equal to or _smaller than the threshold Th _2z (≦ Th _1z )

Here, FIG. 4, illustrating the relationship between the amount of frequency and vibration convergence time and the contents 37 from the start time S ₀ using the example of FIG. 5 to the end time S _2. The graph of FIG. 4 shows the vibration convergence time P ₁ when the contents 37 are almost completely filled in the container 30, and the graph of FIG. 5 shows the case where the amount (liquid amount) of the contents 37 is almost half. This shows the vibration convergence time P ₂ of FIG. (A) to (C) are graphs in which the vertical axis represents acceleration in the x-axis direction, the y-axis direction, and the z-axis direction, and the horizontal axis represents elapsed time. Here, the y-axis direction is a vertical vertical direction.

  In a state where the liquid amount is relatively large, the height of the contents 37 in the container 30 increases, so that the vibration frequency (vibration speed) decreases and the vibration convergence time is extended. On the other hand, as the liquid amount decreases, the height dimension of the contents 37 decreases, the vibration frequency (vibration speed) increases, and the vibration convergence time is shortened. Depending on the shape of the container and the liquid quality, the characteristics of these examples may not be followed. However, it is sufficient that the liquid amount is uniquely determined if the frequency is determined. Here, in the case where the same frequency is obtained with different liquid volumes, the measurement may be performed as being impossible to measure only when the frequency occurs.

[3-4. Vibration state identification unit]
The vibration state specifying unit 4 (specific unit) specifies a vibration state immediately before the vibration of the container 30 stops. Here, as target section within a predetermined time period R from the first time S ₁ before the end vibration is considered to have stopped time S ₂ (second time) the vibration is stopped, the vibration state of the container 30 is specified You. That is, information used for specific vibration state, as shown in FIGS. 4 and 5, rather than the information obtained immediately after the start time S ₀ of the vibration, within a predetermined time period R immediately before the end time S ₂ The obtained information is used. Here, if put the time the still determination condition is satisfied and S _4, a time end time S ₂ is traced back from the time S ₄ for a predetermined time T _1, the first time S ₁ is given than the end time S ₂ This is a time that has been traced back by the period R.

With such a setting, the unstable vibration state immediately after the motion determination condition is satisfied is not referred to, and it becomes easy to grasp the vibration state in which the influence of the disturbance is suppressed. Further, by setting the end time S ₂ the still determination conditions back from the time established by the predetermined time T ₁ at the end of the predetermined period R, since the state becomes non reference vibration is hardly converged, the vibration of the container 30 It becomes easy to grasp the state. The predetermined time period R from the first time S ₁ to the end time S ₂ may be a fixed period set in advance, may be a variable period set in accordance with the content of the acceleration information. For example, among the period from the start time S ₀ to the end time S _2, the absolute value of the change in frequency calculated in a sufficiently short interval to a predetermined time period R (vibration speed) is continuously a predetermined threshold value The longest section that is shorter than the above may be determined as the predetermined period R.

  By the way, when the shape of the container 30 is asymmetrical with respect to the coordinate axis of the sensor and the container 30 is placed in a position other than a predetermined position, for example, the container 30 is placed on a desk in a horizontal position. In such a case, the correlation between the vibration state and the remaining amount of the contents 37 is not the expected relationship, and it is difficult to accurately estimate the remaining amount. Therefore, the vibration state specifying unit 4 of the present embodiment specifies the vibration state of the container 30 when the posture of the container 30 at rest is a predetermined posture. The predetermined posture in the present embodiment is an upright posture.

The upright posture means the posture when the vibration state of the container 30 set in the database described later is measured. The determination of the erect state can be performed based on the direction of the gravitational acceleration detected by the acceleration sensor 33. For example, before and after the end time S _2, the direction of action of gravitational acceleration is equal to or a (vertically downward in erecting posture of the container 30) a specific direction, the vibration state of the container 30 during the establishment of this condition Identify. At this time, the erecting stationary time S ₃ to the direction of action of gravitational acceleration becomes the specific direction as a reference, it may be a predetermined period R immediately before the above target section. Alternatively, the period from the first time S ₁ to erecting stationary time S ₃ may be as described above for target section.

[3-5. Maximum frequency component calculator]
The vibration state identification unit 4 includes a maximum frequency component calculation unit 5 and an amplitude change calculation unit 6.
The maximum frequency component calculation unit 5 extracts a frequency component (maximum frequency component, primary natural vibration component) having the maximum amplitude, and calculates the frequency (primary natural frequency F ₁ ) and amplitude. The maximum frequency component calculation unit 5 has a function of specifying a “maximum frequency component” that is one of the vibration states of the container 30. This maximum frequency component is obtained by performing frequency analysis processing (for example, FFT (Fast Fourier Transformation) processing, DFT (Discrete Fourier Transformation) processing, etc.) on the time-series data of the acceleration information, and selecting a frequency component having the maximum amplitude. Is extracted. Calculated here the primary natural frequency F ₁ and the amplitude information is transmitted to the remaining amount calculating section 8, if necessary is transmitted to the amplitude variation calculating section 6.

[3-6. Amplitude change calculator]
Amplitude variation calculating section 6 extracts an amplitude change in the vibration, and calculates the reference amplitude W and the damping factor D ₁ from the amplitude change. The amplitude change calculator 6 has a function of specifying “amplitude change” which is one of the vibration states of the container 30. This amplitude change can be specified by the time-series data of the acceleration information. For example, the reference amplitude W may be calculated as a root mean square (RMS) of a predetermined period R, or may be used by receiving the amplitude of the natural frequency F ₁ transmitted from the vibration state specifying unit 4. You may. Further, for example, attenuation rate D ₁ may then subjected to a frequency analysis process to series data, it may be calculated by the half-value width method to obtain the envelope time series data using a low-pass filter and Hilbert transform, the predetermined period R ends It may be calculated as a logarithmic decay rate.

Further, simply, the root mean square of the vibration at both ends of the predetermined period R is calculated by a time corresponding to the reciprocal (1 / F ₁ ) of the primary natural frequency F ₁ calculated by the maximum frequency component calculation unit 5, and The slope of the value may be adopted. For example, to calculate a root mean square of the vibration in the first time S ₁ (e.g., by averaging the amplitudes squared up to the time 1 / F ₁ from the first time S ₁ is passed which took square root) calculating the root mean square of vibration in the end time S ₂ (e.g., by averaging the square of the amplitude from the end time S ₂ -1 / F ₁ time to time 1 / F ₁ has elapsed that taking the square root) . Here, a material obtained by dividing the difference between the former and the latter at a predetermined period R and the attenuation factor D _1. Calculated here reference amplitude W, information decay rate D ₁ is transmitted to the remaining amount calculating unit 8.
When the frequency analysis processing is performed by both the vibration state identification unit 4 and the amplitude change calculation unit 6, the result of the processing performed by the vibration state identification unit 4 is transmitted to the amplitude change calculation unit 6, so that the amplitude is calculated. It is preferable to omit the frequency analysis processing in the change calculator 6.

[3-7. Database section]
The database unit 7 (database) is a database that stores data (tables, maps, formulas, functions, and the like) in which the relationship between the vibration state of the container 30 and the remaining amount of the contents 37 is defined. These tables, maps, formulas, functions, and the like are set through tests and experiments. Here, an example of data stored in the database is shown in FIG. 6 (A) is a primary natural frequency F ₁ and the first estimate of the frequency based relationship is defined between the remaining amount V ₁ remaining capacity estimating table corresponding thereto, FIG. 6 (B) a second estimated relationship between the remaining amount V ₂ is defined attenuation factor based remaining capacity estimating table corresponding to the attenuation factor D _1. If the relationship between the vibration state of the container 30 and the remaining amount of the contents 37 can be defined by a mathematical expression or function, the remaining amount calculating unit 8 may calculate the relationship without using this database.

In the example shown in FIG. 6 (A), the frequency-based fuel estimation table, properties such as first estimated remaining amount V ₁ higher the natural frequency F ₁ is reduced is set. However, since the remaining amount of the content 37 does not exceed the maximum capacity of the container 30, the natural frequency F ₁ is the lower limit frequency (for example, 30 [Hz]) if it is less than the first estimated remaining amount V ₁ is undefined (state in which estimation is not correct). Similarly, nor the remaining amount of the content 37 is a negative value, the natural frequency F ₁ is an upper limit frequency (for example, 71 [Hz]) first to a case where more than the estimated remaining quantity V ₁ Is undefined. Range of the natural frequency F ₁ for the first estimate value of the or each first estimated remaining amount V ₁ increments of the remaining amount V _1, the lower limit frequency, specific values of the upper limit frequency is of the container 30 and contents 37 It is set according to the type.

In the example shown in FIG. 6 (B), the attenuation factor based fuel estimation table, characteristics such as the second estimated remaining amount V ₂ decreases the higher the attenuation rate D ₁ is set. In this table, the lower limit the attenuation factor (e.g., 1000 [mG / s]) and upper damping factor (e.g., 4100 [mG / s]) is set, with respect to the attenuation factor D ₁ of the range sandwiched between the The remaining amount of the contents 37 is correlated. Range of attenuation rate D ₁ with respect to the second estimated value of the second estimated remaining amount V ₂ and increments the remaining quantity V _2, lower attenuation rate, specific values of the upper limit the attenuation factor is the type of container 30 and contents 37 It is set according to. The unit [G] here indicates the gravitational acceleration, and is approximately 1.0 [G] = 9.80665 [m / s ² ].

  The number of the remaining amount estimation tables is the same as the number of combinations of the measurement target information. That is, the remaining amount estimation table is different for each type of the container 30 and is different for each type of the contents 37. When the number of types of containers 30 is n and the number of types of contents 37 is m, the number of remaining amount estimation tables is n × m. However, if the contents of the tables are similar due to similar container shapes and liquid qualities, they can be integrated or omitted.

[3-8. Remaining amount calculation unit]
The remaining amount calculation unit 8 (calculation unit) calculates the remaining amount of the contents 37 corresponding to the vibration state of the container 30 using the database of the database unit 7. Here, based on the frequency-based fuel estimation table, the first estimated remaining amount V ₁ corresponding to the natural frequency F ₁ that is calculated at the maximum frequency component calculating unit 5 is calculated. Further, based on the attenuation factor based fuel estimation table, the second estimated remaining amount V ₂ corresponding to the attenuation factor D ₁ calculated by the amplitude change calculating unit 6 is calculated.

Further, the remaining amount calculation unit 8 determines the absolute value of the difference between the first estimated remaining quantity V ₁ and the second estimated remaining amount V ₂ is to or less than the error threshold value Th _3. If this condition is satisfied, the remaining amount calculating unit 8 calculates a final estimated remaining quantity V having a value corresponding to a first estimated remaining quantity V ₁ and the second estimated remaining amount V _2. On the other hand, if this condition is not satisfied, it is determined that either the first estimated remaining amount V ₁ or the second estimated remaining amount V ₂ has a large error, and the remaining amount estimation calculation is terminated.

Final estimated remaining amount V of the present embodiment is calculated to be the first estimated remaining amount V ₁ as an average value of the second estimated remaining amount V _2. The average value here includes an arithmetic mean value, a root mean square value, a geometric mean value, a harmonic mean value, and the like, and depends on the likelihood of the first estimated remaining amount V ₁ and the second estimated remaining amount V ₂ . Weighted arithmetic mean, weighted geometric mean, weighted harmonic mean, etc. are also included. When the addition average value as the final estimated remaining amount V may if the final estimated remaining quantity V defined by the first function of the estimated remaining quantity V ₁ and the second estimated remaining amount V _2. Information on the final estimated remaining amount V calculated here is transmitted to the consumption estimating unit 9.

However, if any of the remaining amount calculation conditions (conditions 7 to 9) exemplified below is not satisfied, the remaining amount estimation calculation is not performed, or even if the estimation calculation is performed, the result is invalidated. . That is, the remaining amount calculation unit 8 has a function of calculating the remaining amount when the remaining amount calculation condition is satisfied.
Condition 7. 7. The final estimated remaining amount V is an undefined value. Condition 8 where the reference amplitude W is smaller than the predetermined amplitude. Attenuation rate D ₁ exceeds a predetermined attenuation factor

[3-9. Consumption estimation unit]
The consumption amount estimating unit 9 (estimating unit) calculates a drinking amount D (consumption amount, intake amount) of the contents 37 by the user based on a change amount of the final estimated remaining amount V calculated by the remaining amount calculating unit 8. It is. Each time the remaining amount calculating unit 8 calculates the final estimated remaining amount V, the consumption amount estimating unit 9 sets the difference (Vb−V) between the latest final estimated remaining amount V and its previous value Vb as the drinking amount D. calculate. The time corresponding to the final estimated remaining amount V (for example, the start time S _{0 of the} vibration, the first time S ₁ , the end time S ₂ , the current time) Etc.). In addition, since the value of the previous value Vb becomes unnecessary at the time when the amount of drinking D is calculated, the latest value of the final estimated remaining amount V is substituted for the previous value Vb. However, when the difference (Vb-V) is less than a predetermined threshold Th ₄ is maintains the previous value Vb is regarded as drinking amount D was zero. The information on the calculated drinking amount D and drinking time td is displayed on the display device 23 together with the information on the final estimated remaining amount V, and is notified to the user. When the measurement target information is transmitted from the data acquisition unit 1, the container type and the liquid type may be displayed together on the display device 23. Further, information output to the display device 23 may be recorded on the recording medium 26 via the storage device 22 or a storage medium drive.

[3-10. Monitor section]
The monitor unit 10 is an element for creating a database stored in the database unit 7, and stores a table, a map, a mathematical expression, a function, and the like in which the relationship between the vibration state of the container 30 and the remaining amount of the contents 37 is defined. Used when setting. Therefore, when a database is already provided, the monitor unit 10 can be omitted. On the other hand, if the monitor unit 10 is provided, it becomes easy to modify and update the database at a later date.

The monitor unit 10 is used when the types of the container 30 and the contents 37 are known and the actual remaining amount Vr of the contents 37 is also known (measurable). Specifically, the container 30 held by the hand is placed on a desk to generate vibration in the container 30, and the data acquisition unit 1 is caused to acquire acceleration information of the vibration. Further, the container 30 is left until the vibration is naturally attenuated, and the vibration state of the container 30 is specified based on the acceleration information and the angular velocity information acquired within the predetermined period R immediately before the vibration stops. For example, the natural frequency F ₁ of the maximum frequency component causes calculated to the maximum frequency component calculating unit 5, to calculate the attenuation factor D ₁ to the amplitude variation calculating section 6. On the other hand, the monitor unit 10 corrects and updates the database according to the measurement target information so that the natural frequency F ₁ and the attenuation rate D ₁ are associated with the actual remaining amount Vr of the content 37 input from the outside. .

[4. flowchart]
[4-1. Estimation of remaining amount and drinking amount]
7 and 8 are flowcharts illustrating the procedure of the weighing program 11 executed by the weighing device 20. The control flag St used in this flow indicates whether the container 30 is in a moving state (a vibrating state) or a stationary state, and its initial value is a stationary state. Is set to St = 0. First, the data acquisition unit 1 acquires acceleration information and measurement target information transmitted from the cap 32 (step A1). Acceleration information is transmitted to the buffer unit 2, information of ₂ minutes nearest buffer period T is accumulated (step A2).

The determination unit 3 determines a motion determination condition based on the data stored in the buffer unit 2 (Step A3). For example, it is determined that the dynamic determination condition when the magnitude of the most recent acceleration change is the threshold value Th ₁ or more is satisfied, with a flag St is set to St = 1 showing a dynamic state, stored in the buffer section 2 The determination of the stillness determination condition is started based on the data (steps A4 to A6). Shown example, after the motion determination condition is satisfied, the magnitude of the acceleration changes continuously for the predetermined time T ₁ is is determined that the stationary judgment condition when a threshold value Th ₂ below is satisfied, the flag St is a stationary state St = 0 is set, and the identification of the vibration state is started (steps A7 to A8).

The vibration state identification unit 4 determines whether the posture of the container 30 at rest is the upright posture. Here, the acceleration measurement value expected in the upright posture is determined by the mounting direction of the sensor. For example, the acceleration measurement value is calculated as a reference acceleration a _r (x _r , y _r , z _r ) = (0, 1, 0) [G] and then, when the acceleration is measured a (x, y, z) and, possible magnitude of the error acceleration .DELTA.a = aa _r to determine whether erect posture by or less than a predetermined threshold value It is. The value of the reference acceleration may be treated as a constant (0, 1, 0) [G] by unifying the vertical and horizontal directions of the sensor attached to the container (for example, y is the vertical direction and x and z are the horizontal directions). Then, the actually measured value may be received as the measurement target information. Further, the magnitude of the error acceleration may be used instead of the magnitude of the acceleration change used in the example of the motion determination and the stillness determination in the determination unit 3. In the case of the upright posture, a target section from which data is extracted to specify the vibration state is set (steps A9 to A10). Target section, FIG. 4, as shown in FIG. 5, from the interval (first time S ₁ the vibration of the container 30 corresponds to the predetermined period R immediately before the end time S ₂ that are considered to have stopped to the end time S ₂ Section). Influence of the disturbance vibration is suppressed than the first time S ₁ to exclude the historical data, that to exclude the data later than the end time S _2, a high vibration state correlated with liquid volume Is easy to grasp.

In the maximum frequency component calculation unit 5, the natural frequency F ₁ is calculated in the primary is the frequency of the maximum frequency component of the vibration (step A11). Further, the amplitude variation calculating section 6, as an amplitude change in the vibration, the reference amplitude W, attenuation rate D ₁ is calculated (Step A12). Thereafter, the remaining amount calculation unit 8 determines whether the remaining amount calculation condition is satisfied (steps A13 to A15).

If the remaining amount calculation condition is satisfied, based on the frequency-based fuel estimation table, the first estimated remaining amount V ₁ corresponding to the natural frequency F ₁ is calculated (Step A16). Further, based on the attenuation factor based fuel estimation table, the second estimated remaining amount V ₂ is calculated corresponding to the attenuation factor D ₁ (step A17). First estimated remaining amount V ₁ of the these, the absolute value of the difference between the second estimated remaining amount V ₂ is equal to or less than the error threshold value Th _3, according to the first estimated remaining quantity V ₁ and the second estimated remaining amount V ₂ The final estimated remaining amount V is calculated (steps A18 to A19). On the other hand, the consumption estimating unit 9 calculates the amount D of drinking of the contents 37 by the user and the time based on the change amount of the final estimated remaining amount V calculated by the remaining amount calculating unit 8 (step A20). Then, information such as the type of the container 30 and the type of the contents 37, the final estimated remaining amount V, the amount of drink D, and the time of drink td are displayed on the display device 23 (step A21).

[4-2. Database Settings]
FIG. 9 is a flowchart illustrating a procedure of a program for performing initial setting and change of a database (for example, creation and change of a remaining amount estimation table). This flow is performed subsequent to the processing up to the symbol A in the flow shown in FIG. That is, when the state of the container 30 changes from the moving state to the stationary state, the natural frequency F ₁ and the damping rate D ₁ are calculated based on the data acquired within the predetermined period R immediately before the stationary state. . Further, the actual remaining amount Vr of the content 37 is measured by the user and is input from the input device 24 (step A31). The monitor unit 10, as can be correlated with the natural frequency F ₁ and Jitsuzanryou Vr, the contents of the frequency-based fuel estimation table corresponding to the measurement object information recorded and updated. Further, the measurement target information decay rate based fuel estimation table according to, like the attenuation rate D ₁ and Jitsuzanryou Vr is associated, the content is recorded and updated (step A32~A33).

[5. Action, effect]
(1) In the above metering program 11 weighing apparatus is executed 20, based on the end time S ₂ the vibration of the container 30 is considered to have stopped, on the basis of the data obtained within the predetermined period just before R The vibration state of the container 30 is specified. As a result, the data corresponding to the unstable vibration state in which the influence of the disturbance remains after the vibration due to the disturbance disappears can be referred to, and the influence of the disturbance is reduced and suppressed, and the influence of the liquid amount is remarkable. Can be accurately grasped. Therefore, it is possible to improve the accuracy of specifying the vibration state unique to the container 30 containing the specific liquid amount, and it is possible to accurately measure the contents 37. Further, the still determination condition of the container 30 is established, the time traced back from the only trigger times S ₄ predetermined time T ₁ included in the still determination condition is set to the end of the predetermined period R. Thereby, the data corresponding to the state in which the vibration has almost converged can be referred to, and the accuracy of specifying the vibration state of the container 30 can be improved.

  (2) In the weighing program 11, the vibration state is specified when the posture at the time of stopping the vibration is a predetermined posture (upright posture). As described above, by considering the posture when the vibration of the container 30 is stopped, the state in which the correlation between the vibration state specified by the vibration state specifying unit 4 and the remaining amount of the contents 37 is close to the expected relationship is selected. can do. Therefore, the weighing accuracy of the contents 37 can be improved.

(3) The weighing program 11 is provided with a maximum frequency component calculation unit 5 that extracts a frequency component (maximum frequency component) having the maximum amplitude. By referring to the maximum frequency component, it becomes easy to grasp the primary natural frequency corresponding to the dimension in the height direction of the content 37 (the depth dimension of the content 37), and the weighing accuracy of the content 37 can be reduced. Can be improved.
(4) The above-mentioned weighing program 11 is provided with an amplitude change calculator 6 for extracting an amplitude change of vibration. By referring to the amplitude change, it is easy to grasp the magnitude of the vibration and the vibration convergence time according to the weight and volume of the contents 37, and the measurement accuracy of the contents 37 can be improved.

(5) In the above metering program 11, when the natural frequency F ₁ is within a predetermined frequency range, estimation calculation of the remaining amount is carried out. On the other hand, if the natural frequency F ₁ is outside a predetermined frequency range, the estimated operation is the non-implementation. This makes it possible to invalidate the estimation result when the cap 32 removed from the container 30 is placed on a desk. That is, erroneous detection and erroneous determination of the vibration state of the container 30 can be suppressed, and the measurement accuracy of the contents 37 can be improved.

  (6) In the weighing program 11, when the reference amplitude W is equal to or larger than the predetermined amplitude, the remaining amount estimation calculation is performed. This makes it possible to invalidate the estimation result not only when only the cap 32 is placed on the desk, but also when the container 30 is placed on the desk slowly enough to cause almost no vibration. Therefore, erroneous detection and erroneous determination of the vibration state of the container 30 can be suppressed, and the measurement accuracy of the contents 37 can be improved.

(7) Similarly, in the metering program 11, when the attenuation rate D ₁ is less than a predetermined attenuation factor, estimation calculation of the remaining amount is carried out. This makes it possible to invalidate the estimation result not only in the case where only the cap 32 is placed on the desk, but also in a state where a vibration component highly correlated with the liquid amount is not generated due to disturbance.
For example, when the container 30 is placed on a desk straight from the vertical direction and only a small amount of vibration of the natural frequency component occurs, the calculation of estimating the remaining amount can be stopped. Therefore, erroneous detection and erroneous determination of the vibration state of the container 30 can be suppressed, and the measurement accuracy of the contents 37 can be improved.

  (8) In the weighing program 11, the consumption estimating unit 9 for estimating the drinking amount of the contents 37 from the variation of the final estimated remaining amount V is provided. In this way, by tracking the temporal change of the final estimated remaining amount V with high calculation accuracy, it is possible to accurately estimate the intake amount of the contents 37 by the user.

[6. Modification]
In the above-described embodiment, the weighing system in which the cap 32 in which the acceleration sensor 33 is incorporated and the weighing device 20 are separately provided has been illustrated, but these may be provided integrally. For example, by incorporating the control device 40 and the display device 23 in the cap 32, it is possible to realize a system having the same operation and effect as the above-described embodiment.

  In the above-described embodiment, the weighing program 11 is recorded and stored in the storage device 22, the recording medium 26, the auxiliary storage device 43, and the like of the weighing device 20, but the weighing program 11 is recorded and stored. The location can be set arbitrarily. For example, the weighing program 11 may be mounted on a server, a workstation, or the like arranged on a network to which the weighing device 20 is connected. It is also possible to divide the weighing program 11 into a plurality of components and record and store each in a different location. For example, a database (table, map, formula, function, etc.) defining the relationship between the vibration state of the container 30 and the remaining amount of the contents 37 is mounted on a server, a workstation, or the like on a network, and a plurality of databases are stored in one database. May be configured to be accessed by the weighing device 20.

  In the above-described embodiment, the cap 32 in which the acceleration sensor 33 for detecting the acceleration information is incorporated is illustrated, but the information for specifying the vibration state of the container 30 is not limited thereto. In addition, the acceleration sensor 33 may be replaced with a gyro sensor, and the vibration state of the container 30 may be specified using angular velocity information instead of the acceleration information. Alternatively, if the sensor is capable of acquiring a vibration waveform, the vibration state of the container 30 can be specified by replacing the acceleration sensor 33 with a sensor.

  In the above-described embodiment, the content 37 is measured when the posture of the container 30 at rest is the upright posture. However, the upright posture here is the vibration set in the database. The posture corresponds to the state, and does not necessarily mean that the state is perpendicular to the desk surface. When the contents 37 of the container 30 whose posture at rest is uniquely determined, such as a cup-shaped container having an open top surface, are measured, the correlation between the vibration state and the remaining amount of the contents 37 is determined. The remaining amount can be accurately estimated even if the determination of the posture is omitted, since the remaining amount is not easily reduced.

  In the above-described embodiment, the information of the final estimated remaining amount V, the drinking amount D, and the drinking time td of the contents 37 is displayed on the display device 23, but the specific application is not limited to this. For example, it is conceivable to apply the present invention to various inventory managements of foods, seasonings, medicines, and the like in business and at home. In addition, in home care and the food and beverage industry, it may be used to detect the timing of providing drinks. Alternatively, it may be used for managing water intake as part of measures against heat stroke and health management during exercise. Thus, the above-mentioned weighing program 11 can be used to weigh the contents 37 of any container 30. In particular, the contents 37 of the highly portable container 30 can be used for accurate measurement without depending on the position where the container 30 can be placed.

[7. Appendix]
Regarding the embodiment including the above-described modified examples, the following supplementary notes are further disclosed.
[7-1. Measuring device]
(Appendix 1)
An acquisition unit for acquiring information for identifying the vibration of the container,
From the information obtained within a predetermined period from a first time after a predetermined time from the start of the vibration to a second time from which the vibration is considered to be stopped, a specifying unit that specifies the vibration state of the container,
From the relationship of the amount of the contents of the container to the vibration state of the container, a calculation unit that calculates the amount corresponding to the vibration state,
A weighing device comprising:
(Appendix 2)
The weighing device according to claim 1, wherein the specifying unit specifies the vibration state when the posture when the vibration stops is a predetermined posture.
(Appendix 3)
3. The weighing device according to claim 1, wherein the specifying unit specifies a maximum frequency component of the vibration that is one of the vibration states.
(Appendix 4)
4. The weighing device according to claim 1, wherein the specifying unit specifies an amplitude change of the vibration that is one of the vibration states. 5.
(Appendix 5)
5. The weighing device according to claim 1, wherein the calculation unit calculates the amount when a frequency of a maximum frequency component of the vibration is within a predetermined frequency range. 6.
(Appendix 6)
The weighing device according to any one of supplementary notes 1 to 5, wherein the calculation unit calculates the amount when the amplitude of the vibration is equal to or greater than a predetermined amplitude.
(Appendix 7)
The weighing device according to any one of Supplementary notes 1 to 6, wherein the calculation unit calculates the amount when an attenuation rate of the vibration is equal to or less than a predetermined attenuation rate.
(Appendix 8)
8. The weighing device according to claim 1, further comprising an estimation unit configured to estimate an amount of consumption of the content from the amount of change in the amount. 9.
(Supplement)
In Supplementary Notes 1 to 8, it is preferable that the predetermined period is a period immediately before the vibration stops. Further, it is preferable that the vibration state specified from the information acquired during the predetermined period is a natural vibration state determined by the liquid quality and the liquid amount of the container and the content liquid. In addition, specific examples of the information acquired by the acquisition unit include speed information, acceleration information, angular velocity information, angular acceleration information, and the like. For example, a sensor for detecting such information may be attached to the container, and the result of detection by the sensor may be acquired by the acquisition unit by wireless communication or wired communication. In this case, the function of the present weighing device may be built in a smartphone or a portable terminal device.
Note that the “first time” described in Supplementary Note 1 is preferably a time before the vibration is started and before the vibration is stopped, in other words, a time after a predetermined time has elapsed from the start of the vibration. It is preferred that Here, if a period in which the vibration includes a disturbance is defined as a disturbance period, the first time is preferably a time after the time when the disturbance period has elapsed from the start of the vibration. That is, it is preferable that the disturbance period be excluded from the predetermined period from the first time to the second time.

[7-2. Weighing device including processor]
(Appendix 9)
In a measuring device for measuring the amount of the contents of a container,
Processor, memory,
An acquisition unit that is executed by the processor and acquires information that specifies vibration of the container,
The vibration state of the container is specified from the information executed within the predetermined period from the first time after the predetermined time from the start of the vibration to the second time when the vibration is considered to be stopped, executed by the processor. A specific part to be
A calculation unit that is executed by the processor and calculates the amount corresponding to the vibration state from the relationship between the amount of the contents of the container and the vibration state specified by the specification unit.
A weighing device comprising:

[7-3. Weighing system]
(Appendix 10)
A sensor that is built into the cap of the container and detects information that specifies the vibration of the container,
An acquisition unit configured to acquire the information detected by the sensor;
From the information obtained within a predetermined period from a first time after a predetermined time from the start of the vibration to a second time from which the vibration is considered to be stopped, a specifying unit that specifies the vibration state of the container,
From the relationship of the amount of the contents of the container to the vibration state specified by the specifying unit, a calculation unit that calculates the amount corresponding to the vibration state,
A weighing system comprising:

[7-4. Weighing method]
(Appendix 11)
An acquisition step of acquiring information for identifying vibration of the container,
From the information obtained within a predetermined period from a first time after a predetermined time after the start of the vibration to a second time when the vibration is considered to be stopped, a specifying step of specifying the vibration state of the container,
From the relationship of the amount of the contents of the container to the vibration state of the container, a calculation step of calculating the amount corresponding to the vibration state,
A weighing method comprising:
(Appendix 12)
12. The weighing method according to claim 11, wherein in the specifying step, the vibration state is specified when the posture at the time of stopping the vibration is a predetermined posture.
(Appendix 13)
13. The weighing method according to claim 11, wherein in the specifying step, a maximum frequency component of the vibration that is one of the vibration states is specified.
(Appendix 14)
The method according to any one of Supplementary Notes 11 to 13, wherein in the specifying step, a change in amplitude of the vibration that is one of the vibration states is specified (Additional Note 15).
15. The weighing method according to any one of supplementary notes 11 to 14, wherein, in the calculating step, the amount is calculated when a frequency of a maximum frequency component of the vibration is within a predetermined frequency range.
(Appendix 16)
The method according to any one of supplementary notes 11 to 15, wherein, in the calculating step, the amount is calculated when the amplitude of the vibration is equal to or greater than a predetermined amplitude.
(Appendix 17)
The method according to any one of Supplementary Notes 11 to 16, wherein the amount is calculated when the attenuation rate of the vibration is equal to or less than a predetermined attenuation rate in the calculating step.
(Appendix 18)
18. The weighing method according to any one of Supplementary Notes 11 to 17, further comprising an estimation step of estimating the consumption amount of the content from the change amount of the amount.

1 Data acquisition unit (acquisition unit)
2 Buffer unit 3 Judgment unit 4 Vibration state identification unit (identification unit)
5 Maximum frequency component calculation unit 6 Amplitude change calculation unit 7 Database unit (database)
8 Remaining amount calculation unit (calculation unit)
9 Consumption estimation unit (estimation unit)
10 monitor section 11 weighing program 20 weighing device (smartphone)
Reference Signs List 30 container 32 cap 37 contents 40 control device

Claims (10)

Obtain information specifying the vibration of the container,
The start time of the vibration of the container, and a second time when the vibration of the container is considered to have stopped is determined,
From the information obtained during a predetermined period from the first time after the predetermined time from the start of the vibration to the second time, to identify the vibration state of the container,
A weighing program for causing a computer to execute a process of calculating the amount corresponding to the vibration state from a relationship between the amount of contents of the container and the vibration state of the container. The weighing program according to claim 1, wherein when the posture at the time of stopping the vibration is a predetermined posture, the computer executes a process of specifying the vibration state. The weighing program according to claim 1, wherein the weighing program causes the computer to execute a process in which the vibration state is a maximum frequency component of the vibration. The weighing program according to any one of claims 1 to 3, wherein the weighing program causes a computer to execute a process in which the vibration state is a change in amplitude of the vibration. 5. The weighing program according to claim 1, wherein when the frequency of the maximum frequency component of the vibration is within a predetermined frequency range, the computer executes a process of calculating the amount. 6. The weighing program according to any one of claims 1 to 5, wherein when the amplitude of the vibration is equal to or greater than a predetermined amplitude, a computer executes a process of calculating the amount. The weighing program according to any one of claims 1 to 6, wherein when the attenuation rate of the vibration is equal to or less than a predetermined attenuation rate, a computer executes a process of calculating the amount. The weighing program according to any one of claims 1 to 7, wherein the weighing program causes a computer to execute a process of estimating a consumption amount of the content from a change amount of the amount. An acquisition unit for acquiring information for identifying the vibration of the container,
A start time of the vibration of the container, and a determination unit that determines a second time at which the vibration of the container is considered to have stopped,
From the information obtained within a predetermined period from the first time after the predetermined time from the start of the vibration to the second time, from the information, a specifying unit that specifies the vibration state of the container,
From the relationship of the amount of the contents of the container to the vibration state of the container, a calculation unit that calculates the amount corresponding to the vibration state,
A weighing device comprising: An acquisition step of acquiring information for identifying vibration of the container,
A start time of the vibration of the container, and a determination step of determining a second time at which the vibration of the container is considered to have stopped,
From the information obtained within a predetermined period from the first time after the predetermined time from the start of the vibration to the second time, a specifying step of specifying the vibration state of the container,
From the relationship of the amount of the contents of the container to the vibration state of the container, a calculation step of calculating the amount corresponding to the vibration state,
A weighing method comprising:

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