[go: up one dir, main page]

WO2023026337A1 - Dispositif de pesage et procédé de pesage utilisant un capteur d'accélération à trois axes - Google Patents

Dispositif de pesage et procédé de pesage utilisant un capteur d'accélération à trois axes Download PDF

Info

Publication number
WO2023026337A1
WO2023026337A1 PCT/JP2021/030859 JP2021030859W WO2023026337A1 WO 2023026337 A1 WO2023026337 A1 WO 2023026337A1 JP 2021030859 W JP2021030859 W JP 2021030859W WO 2023026337 A1 WO2023026337 A1 WO 2023026337A1
Authority
WO
WIPO (PCT)
Prior art keywords
value
weighing
sensor
acceleration
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/030859
Other languages
English (en)
Japanese (ja)
Inventor
健 井原
剛 松田
吉一 長根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A&D Holon Holdings Co Ltd
Original Assignee
A&D Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A&D Co Ltd filed Critical A&D Co Ltd
Priority to DE112021008136.5T priority Critical patent/DE112021008136T5/de
Priority to PCT/JP2021/030859 priority patent/WO2023026337A1/fr
Priority to JP2023543501A priority patent/JP7685779B2/ja
Publication of WO2023026337A1 publication Critical patent/WO2023026337A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G23/00—Auxiliary devices for weighing apparatus
    • G01G23/01—Testing or calibrating of weighing apparatus

Definitions

  • the present invention relates to a weighing device and weighing method using a triaxial acceleration sensor.
  • a balance which is a weighing device, uses a weight sensor to measure the component Wv of a load perpendicular to the weighing pan, and uses the gravitational acceleration g at the location where the balance is installed to determine the mass m of the object placed on the weighing pan as follows: It is obtained from the formula (1).
  • the mass measured by the balance that is, the measured value m can be said to be a true value.
  • FIG. 10(B) when the direction in which the gravitational acceleration g acts does not match the direction perpendicular to the weighing pan, a component Wh that cannot be detected by the balance is generated, and the weight value m is lighter than the true value.
  • the weighed value contains an error when the following two occur.
  • a typical balance is equipped with a level (bubble bubble) to detect the tilt of the balance.
  • Japanese Laid-Open Patent Publication No. 2002-100000 discloses a technique for more accurately controlling the level of a balance by detecting air bubbles in a level with an optical sensor.
  • the present invention has been made based on the above-mentioned conventional problems and the above-mentioned knowledge of the inventors. It is an object of the present invention to provide a weighing device and a weighing method that automatically solves
  • a weighing device includes a weighing pan, a weight sensor connected to the weighing pan, x and y on a plane parallel to the horizontal of the weight sensor, and the weight sensor.
  • a three-axis acceleration sensor for detecting acceleration changes in the three axes of x, y, and z by setting z in a direction perpendicular to the horizontal of the weight sensor;
  • a storage unit for storing three-axis reference outputs, and an arithmetic processing unit, wherein the arithmetic processing unit compares the three-axis current outputs of the three-axis acceleration sensor with the reference outputs to determine x and/or Alternatively, if the output of y has changed, it detects that there is a tilt, and if the output of z has changed, it detects that there is a change in the installation location and notifies the user.
  • the arithmetic processing unit uses equation (14) to calculate the measured value m detected by the weight sensor as It is also preferable to correct to the corrected metric value m'.
  • the arithmetic processing unit changes the value of gravitational acceleration used for calculating the weight value m detected by the weight sensor to the three-axis acceleration sensor. It is also preferable to change the local gravitational acceleration value glocal obtained using the z-axis output of the axial acceleration sensor to obtain the corrected metric value m'.
  • the arithmetic processing unit changes the value of the gravitational acceleration used in the equation (14) to the three-axis acceleration sensor. It is also preferable to correct the measured value m detected by the weight sensor to a corrected measured value m' by changing the local gravitational acceleration glocal obtained using the three-axis outputs of the acceleration sensor.
  • the arithmetic processing unit when the corrected weight value m' of the object to be weighed exceeds the range of the allowable threshold for the reference mass of the object to be weighed, the arithmetic processing unit warns the user that the error cannot be eliminated by correction. is also preferred.
  • a weighing method includes a weighing pan, a weight sensor connected to the weighing pan, x and y on a plane parallel to the horizontal plane of the weight sensor, and (A) using a weighing device equipped with a three-axis acceleration sensor that detects acceleration changes in the three-axis directions of x, y, and z by setting z in the direction perpendicular to the horizontal direction of the weight sensor; (B) comparing said current output with said three-axis reference output when the weight sensor is horizontal; (C) said (B) ) if the output of x and/or y has changed in step (D) if the output of z has changed in step (B) is characterized by notifying the user that there is a change in the installation location.
  • step (E) if the output of x and/or y has changed in step (B), the weight value m detected by the weight sensor is corrected using equation (14). and (F) if only the output of z has changed in step (B), the gravitational acceleration value used to calculate the weighing value m detected by the weight sensor is changed. , changing the local gravitational acceleration value glocal obtained using the z-axis output of the three-axis acceleration sensor to obtain a corrected metric value m'; and x and/or y outputs have changed, the value of the gravitational acceleration used in the above equation (14) is replaced by the local gravitational acceleration glocal and correcting the measured value m detected by the weight sensor to a corrected measured value m'.
  • FIG. 10 is a diagram showing results of correction using a triaxial acceleration sensor
  • 1 is a configuration block diagram of a weighing device according to a first embodiment of the present invention
  • FIG. It is a schematic perspective view of the same weighing device. It is a flowchart of the weighing method using the same weighing device.
  • FIG. 4 is a configuration block diagram of a weighing device according to a second embodiment of the present invention; It is a flowchart of the weighing method using the same weighing device.
  • FIG. 4 is a diagram showing a preferred mounting form of an acceleration sensor in the embodiments;
  • FIG. 4 is a diagram showing a preferred mounting form of an acceleration sensor in the embodiments; It is a figure showing consideration about the weighing value of a balance.
  • a balance generally includes a weighing pan and a weight sensor connected to the weighing pan to measure the load component Wv perpendicular to the weighing pan, Using the gravitational acceleration g at the place where the balance is installed, the mass m (weighing value) of the object to be weighed is obtained from equation (1).
  • the weight value m measured by the balance contains an error.
  • the balance tilts and the load component Wv perpendicular to the weighing pan decreases
  • the gravitational acceleration g changes
  • the inventors have proposed that the tilt and gravitational acceleration of the balance can be detected by mounting a triaxial acceleration sensor on the balance. ii) both were considered to be auto-detectable by the balance. Secondly, the inventors have found that by using the value of the triaxial acceleration sensor, the balance can detect the change in the weight value resulting from the decrease in the load component Wv perpendicular to the weighing pan and the change in the gravitational acceleration g. I thought that it would be possible to automatically correct it after identifying it.
  • FIG. 1 is a diagram showing the relationship between the tilt angle and each component of gravitational acceleration when a triaxial acceleration sensor is mounted on a certain virtual plane vp.
  • This three-axis acceleration sensor (hereinafter referred to as an acceleration sensor) detects acceleration of the virtual plane vp in orthogonal three-axis directions.
  • the x and y of the acceleration sensor are on the virtual plane vp, and the z is in the direction perpendicular to the virtual plane vp.
  • Each component of gravitational acceleration g for this three-axis acceleration sensor is expressed as "gx, gy, gz".
  • the gx and gy components are on the virtual plane vp, and the gz component is in the direction perpendicular to the virtual plane vp.
  • the tilt angle ⁇ is the angle between the direction of the gravitational acceleration g and the direction of the gz component.
  • each component output by the acceleration sensor at the tilt angle ⁇ be "Xout( ⁇ ), Yout( ⁇ ), and Zout( ⁇ )".
  • the equations (2), (3) and (4) can be expressed.
  • the balance calculates the weight value m (mass m( ⁇ )) measured by the balance based on the equations (13) and (5) by the following equation: (14) is performed to calculate a corrected measured value m'.
  • FIG. 2 is a diagram showing the results of verification of correction using a triaxial acceleration sensor.
  • a balance with a weighing capacity of 10 kg and a minimum display of 0.01 g was used, and the weighing object placed on the weighing pan was 10000 g.
  • the tilt angle from the installation surface (horizontal) of the balance is changed from 0° to 0.5°.
  • a corrected metric value m' was obtained.
  • a corrected weight value m' of 10000 g was obtained at any tilt angle.
  • the balance When the acceleration sensor detects a change in the gravitational acceleration g, the balance replaces the value of the gravitational acceleration g used to calculate the weighing value m detected by the weight sensor in Equation (1) with the acceleration obtained in Equation (15).
  • the measured value is obtained by changing the value of the local gravitational acceleration glocal obtained using the output of the sensor.
  • the divided value is taken as the corrected metric value m' (equation (16)).
  • the local gravitational acceleration glocal is stored in (1) the numerical value of the gravitational acceleration at the representative point in the storage unit of the balance (for example, Ibaraki 9.79952 [m/s2], Sapporo 9.80478 [ m/s2], Osaka 9.79703 [m/s2], etc.), select the point closest to the place where the balance is installed (on-site), or (2) adjust using a weight at the place where the balance is installed (on-site). Therefore, it was sought after.
  • the numerical value of the gravitational acceleration at the representative point in the storage unit of the balance for example, Ibaraki 9.79952 [m/s2], Sapporo 9.80478 [ m/s2], Osaka 9.79703 [m/s2], etc.
  • the local gravitational acceleration glocal of the balance using the output value of the acceleration sensor can be reflected, so the weighing accuracy is improved more than the conventional technique, and This has the advantage of eliminating the need for on-site adjustments using weights each time the balance is installed in a different location.
  • the sine term of equation (17) is obtained from equation (5) including gx( ⁇ ) and gy( ⁇ ) detected by the acceleration sensor. Therefore, the local gravitational acceleration glocal can be obtained from equation (17) by substituting the output values of x, y, and z of the acceleration sensor. In other words, the balance uses the local gravitational acceleration glocal ( ⁇ 0) to replace the weight value m (mass m( ⁇ )) measured by the balance when both tilting of the balance and changes in gravitational acceleration occur. Then, the corrected measurement value m' is calculated by the following equation (18).
  • the balance can automatically detect changes in the tilt of the balance and changes in the installation location, and reduce weighing error caused by changes. can be automatically corrected.
  • Pattern (1) z only changes
  • Pattern (2) x and/or y changes (i.e. x and y change, x change, or y change)
  • Pattern (3) z and x and/or y change (i.e. x, y, z all change, x and z change, or y and z change)
  • pattern (1) the balance detects that the installation location has changed and notifies the user. Then, the weight value is corrected by the equation (16).
  • the gravitational acceleration g uses the local gravitational acceleration glocal. If pattern (2) occurs: the balance detects that a tilt has occurred and notifies the user. Then, the weight value is corrected using equation (14). For the gravitational acceleration g, the value used last time is used as it is. If pattern (3) occurs: the balance detects changes in both tilt and gravitational acceleration and notifies the user. Then, the weight value is corrected by the equation (18).
  • the gravitational acceleration g uses the local gravitational acceleration glocal.
  • FIG. 3 is a configuration block diagram of the weighing apparatus according to the first embodiment of the present invention
  • FIG. 4 is a schematic perspective view of the weighing apparatus.
  • the weighing device is an electronic scale (hereinafter referred to as balance 1).
  • the balance 1 has a main body case 10 , a weighing pan 11 , a weight sensor 12 , an arithmetic processing section 13 , a storage section 14 , an operation section 15 , a display section 16 and a triaxial acceleration sensor 20 .
  • the body case 10 houses a Roberval mechanism 12' that connects the weighing pan 11 and the weight sensor 12.
  • the Roberval mechanism 12' is a structure for transmitting the load received by the weighing pan 11 to the weight sensor 12, and is formed of a rectangular metal block. It is a well-known one comprising a fixed portion to be fixed, upper and lower secondary rods connecting the floating portion and the fixed portion, and a load transmission portion for transmitting the load acting on the floating portion to the weight sensor 12 .
  • the weighing pan 11 is supported by a Roberval mechanism 12 ′ and placed on the body case 10 .
  • the weighing pan 11 has a horizontal surface 11' on which an object to be weighed is placed.
  • an electromagnetic balance type, strain gauge type, capacitance type, or the like is used for the weight sensor 12.
  • the load detected by the weight sensor 12 is A/D converted and input to the arithmetic processing unit 13, where it is converted into a weight value.
  • a balance generally measures the load component Wv perpendicular to the weighing pan, and uses the gravitational acceleration g at the location where the balance is installed to calculate the weight of the weighing object from equation (1).
  • the weight sensor 12 is placed on a horizontally leveled table while the main body case 10 is being held while using, for example, a level. 12 is mounted so as to keep horizontal (for example, it is mounted so that the plane provided by Roberval mechanism 12' keeps horizontal).
  • the weighing pan 11 is supported downward in a direction perpendicular to the horizontal plane of the weight sensor 12 by a pan boss (not shown) protruding from the Roberval mechanism 12', and the horizontal plane 11' of the weighing pan 11 coincides with the horizontal plane of the weight sensor. installed to do so.
  • the three-axis acceleration sensor 20 (hereinafter referred to as the acceleration sensor 20) is an IC module equipped with a sensor that integrates a spring and a weight and an element that detects displacement when acceleration is applied to the sensor.
  • the acceleration sensor 20 is arranged on a virtual plane vp parallel to the horizontal of the weight sensor 12, and the x and y of the acceleration sensor 20 are arranged in the virtual plane vp, and the z is arranged in a direction perpendicular to the virtual plane vp.
  • x and y are set parallel to the horizontal of the weight sensor 12
  • z is set in the direction perpendicular to the horizontal of the weight sensor 12
  • orthogonal three-axis directions (x, y, Detect the acceleration of z).
  • the acceleration sensor 20 is attached so that the horizontal plane of the acceleration sensor 20 and the horizontal plane of the weight sensor 12 are aligned.
  • the purpose of this embodiment is to detect and correct the change due to the inclination of the load received by the weight sensor 12, by attaching the acceleration sensor 20 and the weight sensor 12 so that they are horizontally aligned, both can be corrected.
  • the origin of the tilt angle is the same, and the error can be reduced.
  • the virtual plane vp on which the acceleration sensor 20 is arranged may be set at any position within the main body case 10 as long as it does not interfere with the weight sensor 12 .
  • a suitable setting of the virtual plane vp on which the acceleration sensor 20 is mounted, that is, the mounting position of the acceleration sensor 20 will be described later. Note that the x-axis and y-axis settings in FIG. 4 may be reversed.
  • the reference output "Xout ( 0), Yout(0), and Zout(0)'' are measured and stored in the storage unit 14, which will be described later.
  • the operation unit 15 and the display unit 16 are provided on the front side surface of the body case 10 of the balance 1. From the operation unit 15, a weighing operation, which will be described later, can be performed.
  • the display unit 16 displays a screen associated with weighing, which will be described later.
  • the arithmetic processing unit 13 is a microcontroller in which, for example, a CPU, ROM, RAM, etc. are mounted on an integrated circuit.
  • the arithmetic processing unit 13 has an acceleration change detection unit 131 and a change notification unit 132 for detecting changes in acceleration using the acceleration sensor 20 . Further, the arithmetic processing unit 13 has a tilt correcting unit 133 and a gravity correcting unit 134 in order to perform correction accompanying changes in acceleration.
  • the functions of the functional units 131, 132, 133, and 134 are implemented by, for example, reading and executing programs stored in the storage unit 14 by the CPU. The details of the function of each functional unit will be described later in "2-2. Weighing Method".
  • the storage unit 14 is a semiconductor memory device such as RAM, flash memory, or a storage medium such as a memory card.
  • the storage unit 14 stores various programs for calculation of the calculation processing unit 13 . Further, the storage unit 14 stores reference outputs “Xout(0), Yout(0), Zout(0)” of the acceleration sensor 20 for detecting changes using the acceleration sensor 20 .
  • the above is the configuration of the balance 1 using the acceleration sensor 20 according to the first embodiment. Next, a weighing method using the balance 1 will be described.
  • FIG. 5 is a flowchart of a weighing method using the weighing device according to the first embodiment. This flow is automatically started before the balance 1 shifts to weighing mode, such as when the power of the balance 1 is turned on or when the balance 1 has not been used for a certain period of time.
  • step S101 the acceleration change detection unit 131 functions to acquire the current outputs "Xout(1), Yout(1), Zout(1)" of the acceleration sensor 20.
  • step S102 the acceleration change detection unit 131 reads out the reference outputs "Xout(0), Yout(0), Zout(0)" and the current outputs "Xout(1), Yout(1)”. ), Zout(1)".
  • step S103 the acceleration change detection unit 131 determines which change in the next pattern corresponds.
  • step S104 the change notification unit 132 functions to notify the user that there is no change in acceleration.
  • the change notification unit 132 displays, on the display unit 16, for example, a message that there is no change in acceleration, or in other words, a message that there is no abnormality in the tilt of the balance or gravitational acceleration.
  • the balance 1 shifts to the weighing mode.
  • step S103 the flow moves to steps S105 and S106.
  • step S106 the change notification unit 132 notifies the user that pattern (1) has changed.
  • the change notification unit 132 displays, on the display unit 16, for example, a message indicating that there is a change in the acceleration in the z direction, or in other words, that a change in the installation location will affect the measured value.
  • the gravity correction unit 134 applies the current outputs "Xout(1), Yout(1), and Zout(1) of the acceleration sensor 20 to Equation (15) to determine the local gravitational acceleration glocal, and in Equation (16) , to determine the weight value.
  • the balance 1 shifts to the weighing mode.At this time, the gravity correction unit 134 detects changes in the installation location (acceleration in the z direction It is also preferable to notify the user that the correction corresponding to the change) has been set.In subsequent weighings, the balance 1 uses the correction weighing value m' obtained by equation (16) as the true value for correction.
  • the measured value m' is displayed on the display unit 16 and recorded in the storage unit 14 or a designated storage device.
  • step S109 the change notification unit 132 notifies the user that pattern (2) has changed.
  • the change notification unit 132 displays a message on the display unit 16, for example, that there is a change in the acceleration in the x and y directions, or in other words that the tilt of the balance affects the weighing value.
  • the inclination correction unit 133 makes settings so as to correct the measurement value by Equation (14).
  • the balance 1 shifts to the weighing mode.
  • the tilt correction unit 133 preferably notifies the user that correction corresponding to the tilt of the balance (change in acceleration in the x and y directions) has been set.
  • the balance 1 displays the corrected weighed value m′ on the display unit 16 as the corrected weighed value m′ corrected by the equation (14) as the true value, and displays it on the storage unit 14 or the specified Record to an external storage device.
  • step S112 the change notification unit 132 notifies the user that pattern (3) has changed.
  • the change notification unit 132 displays, for example, a message on the display unit 16 that there is a change in the acceleration in the x, y and z directions, or in other words, that the tilt of the balance and the change in the installation location will affect the weighing value. indicate.
  • the flow moves to step S113, and both the gravity correction section 134 and the tilt correction section 133 function.
  • the gravity correction unit 134 functions to obtain the local gravitational acceleration glocal from the current outputs "Xout(1), Yout(1), and Zout(1) of the acceleration sensor 20 by Equation (17).
  • the tilt correction unit 133 functions to set the weighing value to be obtained by the formula (18), which is obtained by applying the local gravitational acceleration glocal to the formula (14).When this setting is completed, the balance 1 enters the weighing mode.
  • the tilt correction unit 133 and the gravity correction unit 134 notify the user that corrections corresponding to both the tilt of the balance and changes in the installation location (changes in acceleration in the x, y, and z directions) have been set.
  • the balance 1 obtains the corrected weighing value m' using the formula (18), displays it on the display unit 16, and stores it in the storage unit 14 or a designated external storage device. Record.
  • Second Embodiment In the second embodiment, the weighing method in the first embodiment is combined with daily inspection.
  • the same reference numerals are used for the elements described in the first embodiment, and the description is omitted.
  • FIG. 6 is a configuration block diagram of a weighing apparatus according to a second embodiment of the present invention.
  • the balance 1 includes a main body case 10, a weighing pan 11, a weight sensor 12, an arithmetic processing unit 13, a storage unit 14, an operation unit 15, a display unit 16, a triaxial acceleration sensor 20, a built-in weight 17, a weight adjustment unit 18, It has a level 19 .
  • the built-in weight 17 and the weight addition/removal unit 18 are known in balances with an automatic calibration function. Before the balance 1 is shipped from the factory, the built-in weight 17 is weighed in advance by setting the balance 1 on a horizontally secured stand, and the reference mass "mw0" is stored.
  • the weight addition/removal unit 18 has a motor and a cam controlled by the arithmetic processing unit 13, and loads and unloads the built-in weight 17 multiple times with respect to the weight receiving portion 17'.
  • the weight receiving portion 17 ′ is linked to the aforementioned beam, and the load of the built-in weight 17 is transmitted to the weight sensor 12 .
  • a pump type may be employed for the weight addition/removal unit 18 .
  • the level 19 is a well-known one that allows the user to visually check whether the air bubble is positioned in the center of the reference line.
  • the level 19 is provided on the front side surface of the main body case 10 .
  • the arithmetic processing unit 13 has a daily inspection unit 135 that executes a daily inspection application.
  • the storage unit 14 stores a program for executing the daily inspection application, the reference mass "mw0" of the built-in weight 17, and the allowable threshold for the reference mass "mw0".
  • FIG. 7 is a flowchart of a weighing method using the weighing device according to the second embodiment.
  • the balance 1 has a "daily check" button on the operation unit 15, and a display unit 16 displays a screen for guiding the check of items (1) to (5) related to daily check by the daily check application. Since the daily inspection application is publicly known, the details are omitted.
  • the weighing method of this embodiment combines part of this daily inspection with the weighing method of the first embodiment.
  • step S200 Confirmation of horizontal state, the user is instructed to confirm whether the bubble in the level 19 is within the reference line.
  • a screen prompting you to The user adjusts the adjuster (not shown) connected to the main body case 10 to adjust the position of the bubble.
  • the adjuster not shown
  • step S201 the acceleration change detection unit 131 acquires the current outputs "Xout(1), Yout(1), Zout(1)" of the acceleration sensor 20, as in step S101.
  • step S202 to S213 are the same as S102 to S113 of the first embodiment.
  • the flow proceeds to step S214.
  • step S214 the daily inspection unit 135 weighs the built-in weight 17 as item (4): confirmation of reproducibility.
  • the built-in weight 17 is measured with the corrected weighing value m' according to the settings in steps S207, S210, and S213.
  • step S215 the daily inspection unit 135 compares the measured value m' of the built-in weight 17 with the reference mass mw0 to determine whether there is any problem. If the error between the weighed value m′ and the reference mass mw0 is within the allowable threshold, the daily inspection unit 135 determines that there is no problem (YES), and considers the balance 1 to have cleared item (1) and item (4). , After confirming the remaining items, shift to weighing mode.
  • step S215 the daily inspection unit 135 determines that there is a problem (NO), and proceeds to step S216.
  • step S216 the daily inspection unit 135 determines that software correction cannot eliminate the error in the resolution of the balance 1, and issues a warning to the user.
  • the daily check unit 135 displays, for example, a warning message on the display unit 16 to retry the sensitivity adjustment using an external weight.
  • the built-in weight 17 is used as the object to be weighed. This embodiment can be implemented because it is only necessary to perform item (4).
  • the virtual plane vp on which the acceleration sensor 20 is arranged may be set at any position within the main body case 10 as long as it does not interfere with the weight sensor 12 (Roberval mechanism 12'). is preferred.
  • FIG. 8 is a diagram showing a suitable attachment form of the acceleration sensor 20 in the first and second embodiments, and is an example in which the acceleration sensor 20 is attached to the "lower case".
  • FIG. 8 is a longitudinal end view of the balance 1.
  • the body case 10 has a divided structure of an upper case 10u and a lower case 10d, and the upper case 10u and the lower case 10d are fitted together with a sealing material such as silicone rubber interposed therebetween.
  • the acceleration sensor 20 is placed on a sensor mounting plate 21 and is fixed to the inner surface of the lower case 10d with screws, preferably via three or more mounting bosses 22 in order to prevent the sensor from wobbling.
  • the sensor installation plate 21 has a flush plane, and the sensor installation plate 21 serves as a virtual plane vp. Note that the IC substrate of the acceleration sensor 20 may be used as it is for the sensor mounting plate 21 .
  • the acceleration sensor 20 is fixed to the lower case 10d after the sensor mounting plate 21 is confirmed to be horizontal by using a level, for example, on a level table. be.
  • the weight sensor 12 (Roberval mechanism 12') is placed on a horizontally secured table via the support member 10c, for example, using a level or the like to confirm that it is kept horizontal. and fixed to the body case 10 . Therefore, if the acceleration sensor 20 is also attached horizontally to the main body case 10, it can be attached so that the horizontality of the acceleration sensor 20 and the horizontality of the weight sensor 12 match.
  • FIG. 9 is a diagram showing a suitable attachment form of the acceleration sensor 20 in the first and second embodiments, and is an example in which the acceleration sensor 20 is attached to the "upper case".
  • the acceleration sensor 20 is similarly mounted on a sensor installation plate 21 and screw-fixed to the case inner surface of the upper case 10u via three or more mounting bosses 22 .
  • the acceleration sensor 20 is placed on a horizontally secured stand and, for example, using a level, it is confirmed that the sensor installation plate 21 is kept horizontal. , so that the acceleration sensor 20 and the weight sensor 12 are mounted horizontally.
  • the weight sensor 12 is fixed to the upper case 10u in FIGS. 8 and 9, it is not limited to this, and may be fixed to the lower case 10d.
  • the fixed position of the acceleration sensor 20 is preferably matched with the case on the side where the weight sensor 12 is fixed.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

L'invention a pour objet un dispositif de pesage et un procédé de pesage qui permettent une solution automatique d'un problème provoqué par des changements dans les directions de trois axes à l'aide d'un capteur d'accélération à trois axes. La solution de l'invention porte sur un dispositif de pesage (1) qui comprend : un plateau de pesage (11) ; un capteur de poids (12) relié au plateau de pesage ; un capteur d'accélération à trois axes (20) qui définit x et y sur un plan parallèle à l'horizontale du capteur de poids et z dans une direction perpendiculaire à l'horizontale du capteur de poids, et détecte des changements d'accélération dans les trois axes de x, y et z ; une unité de stockage (14) qui stocke des sorties de référence du capteur d'accélération à trois axes le long des trois axes lorsque le capteur de poids est situé horizontalement ; et une unité d'opération arithmétique (13). L'unité d'opération arithmétique compare aux sorties de référence les sorties actuellement obtenues du capteur d'accélération à trois axes le long des trois axes, détecte l'existence d'inclinaison lorsqu'une sortie le long de x et/ou y a été modifiée et l'existence d'un changement de lieu d'installation lorsqu'une sortie le long de z a été modifiée, et notifie le changement à un utilisateur.
PCT/JP2021/030859 2021-08-23 2021-08-23 Dispositif de pesage et procédé de pesage utilisant un capteur d'accélération à trois axes Ceased WO2023026337A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE112021008136.5T DE112021008136T5 (de) 2021-08-23 2021-08-23 Wiegevorrichtung und Wiegeverfahren unter Verwendung eines triaxialen Beschleunigungsmessers
PCT/JP2021/030859 WO2023026337A1 (fr) 2021-08-23 2021-08-23 Dispositif de pesage et procédé de pesage utilisant un capteur d'accélération à trois axes
JP2023543501A JP7685779B2 (ja) 2021-08-23 2021-08-23 三軸加速度センサを利用した計量装置および計量方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/030859 WO2023026337A1 (fr) 2021-08-23 2021-08-23 Dispositif de pesage et procédé de pesage utilisant un capteur d'accélération à trois axes

Publications (1)

Publication Number Publication Date
WO2023026337A1 true WO2023026337A1 (fr) 2023-03-02

Family

ID=85321618

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/030859 Ceased WO2023026337A1 (fr) 2021-08-23 2021-08-23 Dispositif de pesage et procédé de pesage utilisant un capteur d'accélération à trois axes

Country Status (3)

Country Link
JP (1) JP7685779B2 (fr)
DE (1) DE112021008136T5 (fr)
WO (1) WO2023026337A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2025012842A (ja) * 2023-07-14 2025-01-24 株式会社エー・アンド・デイ 計量装置及びその計量方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008268147A (ja) * 2007-04-25 2008-11-06 Tanita Corp 重量計
US20090306924A1 (en) * 2008-06-10 2009-12-10 Datalogic Scanning, Inc. Automatic calibration system for scanner-scale or other scale system
JP2011158404A (ja) * 2010-02-02 2011-08-18 Kochi Univ Of Technology 移動型床反力計測装置
CN102778287A (zh) * 2012-07-27 2012-11-14 中山佳维电子有限公司 一种可倾斜称重电子秤的控制系统和控制方法
JP2014163856A (ja) * 2013-02-27 2014-09-08 Hirose Denshi System Kk 電子計量器

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105333862B (zh) 2014-08-08 2018-05-25 梅特勒-托利多仪器（上海）有限公司 测量水准泡气泡位置的设备和方法及包含该设备的水准泡

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008268147A (ja) * 2007-04-25 2008-11-06 Tanita Corp 重量計
US20090306924A1 (en) * 2008-06-10 2009-12-10 Datalogic Scanning, Inc. Automatic calibration system for scanner-scale or other scale system
JP2011158404A (ja) * 2010-02-02 2011-08-18 Kochi Univ Of Technology 移動型床反力計測装置
CN102778287A (zh) * 2012-07-27 2012-11-14 中山佳维电子有限公司 一种可倾斜称重电子秤的控制系统和控制方法
JP2014163856A (ja) * 2013-02-27 2014-09-08 Hirose Denshi System Kk 電子計量器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2025012842A (ja) * 2023-07-14 2025-01-24 株式会社エー・アンド・デイ 計量装置及びその計量方法

Also Published As

Publication number Publication date
JPWO2023026337A1 (fr) 2023-03-02
JP7685779B2 (ja) 2025-05-30
DE112021008136T5 (de) 2024-07-11

Similar Documents

Publication Publication Date Title
US7906737B2 (en) Electronic scale comprising an inclinometer and corresponding signal evaluation method
EP2856090B1 (fr) Bascule pour système de relevage de patient, système de commande pour la bascule et procédé permettant de peser un patient se trouvant sur la bascule
US7964806B2 (en) Electronic scale comprising a bubble level
JP2008268147A (ja) 重量計
US12332109B2 (en) Method for configuring a calibration mechanism and force sensor thereof
EP3862731B1 (fr) Appareil et procédé de pesée
CN100595530C (zh) 称重装置，特别是多轨迹称重装置
EP3714240A1 (fr) Procédé de pesage et support d'informations correspondant
JP5084326B2 (ja) ロードセルユニットおよび計量装置
CN101782449A (zh) 一种微型压力传感器标定台
WO2023026337A1 (fr) Dispositif de pesage et procédé de pesage utilisant un capteur d'accélération à trois axes
JP2005121405A (ja) 車両用自重計
JP6990486B1 (ja) 傾斜検知方法およびそのための装置
JP4845793B2 (ja) 計量装置の補正方法
JP2000121423A (ja) 校正適否の判断機構を有する電子秤
JPS58115327A (ja) 水平誤差補正機構付き電子秤
JP3163448U (ja) 電子秤
JP7688334B2 (ja) 三軸加速度センサを搭載した計量装置およびその点検方法
KR100449780B1 (ko) 로드셀을 이용하여 경사를 측정하는 장치 및 방법과, 그장치를 이용하여 경사에 의한 측정오차를 보상하는전자저울 및 보상된 하중측정방법
JP2006138714A (ja) 校正装置を内蔵したはかり
KR102538936B1 (ko) 개선된 정밀도를 갖는 전자 저울
JPS6361919A (ja) 車両用燃料残量計
JPH0415407B2 (fr)
KR20230156990A (ko) 로드셀 이용한 경사 측정장치 및 방법
JPS6144326A (ja) ロ−ドセル式電子秤の荷重検出装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21954954

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023543501

Country of ref document: JP

122 Ep: pct application non-entry in european phase

Ref document number: 21954954

Country of ref document: EP

Kind code of ref document: A1