JP2011069737A - Scale - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scale suitable for carrying. <P>SOLUTION: The scale 100 includes a first measuring part 110 which is shaped like a flat plate and has a plurality of conductive rubbers arranged, a second measuring part 120 which is a separate body from the first measuring part 110 and which has external shape dimensions about equal to those of the first measuring part 110 and has the conductive rubbers in a plurality arranged, and connecting members 134 and 135 which connect the first measuring part 110 and the second measuring part 120 so that they may form the same plane. The scale includes a means for acquiring a latitude value of a place where the body weight is measured by using the scale 100, a means for acquiring weight data on condition that connection is made by the connecting members 134 and 135 and that the latitude value is obtained, a means for compensating the obtained individual weight data, using the latitude value, and a means for calculating the weight data on an examinee by adding the compensated individual weight data. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a scale.

  In recent years, with an increase in health orientation, an increasing number of people actively manage their daily weight. For this reason, in the field of weight scales, weight scales equipped with various functions for managing and analyzing measured weight data have been proposed (for example, see Patent Documents 1 and 2 below).

  On the other hand, in order to strictly manage the weight, it is important to measure the weight using the same scale at the same time without missing every day. However, when it is absent for a long time on a business trip or a trip, it is rare to carry out weight management by bringing a weight scale to a business trip destination or a travel destination, and the weight measurement tends to be interrupted. In such a case, if there is a portable weight scale, it is expected that weight measurement can be continuously performed regardless of whether or not a business trip or a trip is present.

  On the other hand, in the medical field, there are patients whose daily weight management is indispensable. Specifically, patients whose dialysis does not function normally (dialysis patients) and the like can be mentioned.

  In the case of a dialysis patient, waste products cannot be discharged out of the body by urine, and the waste products gradually accumulate in the body. For this reason, it is necessary to remove waste from the body by regularly performing hemodialysis (HD) or peritoneal dialysis (PD) (in the case of peritoneal dialysis, dialysis is performed at least twice a day). Need to do).

  For such dialysis patients (especially peritoneal dialysis patients), an ideal weight is set for each dialysis patient by a doctor. This is because, in the case of a dialysis patient, the amount of water present in the body gradually increases as the waste is not discharged by urine, and the weight increases with the passage of time.

  And, if the overweight obtained by subtracting the ideal weight from the actual weight that is the actual weight becomes more than a certain value, symptoms such as a decrease in blood pressure will occur, so for dialysis patients, Before such symptoms appear, artificial dialysis is performed in advance to remove the water and waste products accumulated in the body.

  That is, the timing for performing artificial dialysis on a dialysis patient is determined based on the result of weight measurement. For this reason, in the case of a dialysis patient, it is necessary to regularly measure the body weight and always check whether the overweight is equal to or greater than a certain value.

  However, weight management for dialysis patients can usually be performed using a scale at home or in a hospital, etc., but when conducting social activities outside the home or hospital, the weight that can be used immediately Since the total is not familiar, it may happen that weight management cannot be performed. On the other hand, even in such a case, it is expected that a dialysis patient can participate in social activities without inconvenience if there is a portable weight scale.

JP 2009-8613 A Japanese Utility Model Publication No. 63-99234

  However, there has been a fixed idea that weight scales have a certain size and weight. Conventionally, in the field of weight scales, convenience (weight reduction, size reduction, etc.) has been pursued on the premise of carrying. There were few things.

  The present invention has been made in view of the above problems, and an object thereof is to provide a weight scale suitable for carrying.

In order to achieve the above object, the weight scale according to the present invention has the following configuration. That is,
A first measuring unit having a flat plate shape and a plurality of conductive rubbers for detecting an external force acting in a direction substantially perpendicular to the plane;
Separate from the first measurement unit, which has a plurality of conductive rubbers having an external dimension substantially equal to the first measurement unit and detecting an external force acting in a direction substantially orthogonal to the plane. A second measuring unit;
A connecting member that connects the side surface of the first measurement unit and the side surface of the second measurement unit so that the same plane is formed by the first measurement unit and the second measurement unit; A weight scale comprising:
Latitude value acquisition means for acquiring a latitude value of a place where weight measurement is performed using the scale,
When the subject is placed across the first measurement unit and the second measurement unit, the external force detected in each of the conductive rubbers arranged in the first and second measurement units is detected. The acquisition means that acquires the condition that the side surface of the first measurement unit and the side surface of the second measurement unit are connected by the connecting member and the latitude value is acquired by the latitude value acquisition unit. When,
Correction means for calculating weight data for each conductive rubber by correcting each external force acquired by the acquisition means using the acquired latitude value;
Weight data calculation means for calculating weight data of the subject by adding weight data for each conductive rubber calculated by the correction means.

  According to the present invention, it is possible to provide a weight scale suitable for carrying.

It is a figure which shows the external appearance structure of the weight scale 100 which concerns on the 1st Embodiment of this invention. It is a figure which shows the structure of the measurement surface of the weight scale. It is a figure which shows the mode transition of the scale 100. FIG. It is a figure which shows the function structure of the weight scale. It is a figure which shows the function structure of the control part. It is a figure which shows an example of the calibration data used in the weight data correction | amendment part 504. FIG. It is a flowchart which shows the flow of the weight measurement process in the weight scale 100. FIG. 6 is a diagram showing a display example on the display unit 123. FIG. It is a figure which shows the screen which inputs the data regarding a measurement place in the display part. 3 is a diagram illustrating a functional configuration of a control unit 1001. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings as necessary.

[First Embodiment]
<1. Appearance structure of weight scale>
FIG. 1 is a diagram showing an external configuration of a weight scale 100 according to the first embodiment of the present invention. As shown in FIG. 1 (A), the weight scale 100 includes first and second measuring units 110 and 120 having substantially the same external dimensions and each having a vertically long flat plate shape.

  The first measurement unit 110 and the second measurement unit 120 are connected to each other on one long side so as to be rotatable. Specifically, the side surface 111 of the first measurement unit 110 and the side surface 121 of the second measurement unit 120 having substantially the same outer dimensions as the first measurement unit 110 are connected via the hinge mechanisms 131 to 133. Accordingly, the second measuring unit 120 can be opened and closed (foldable) in the direction of the arrow 130 with respect to the first measuring unit 110.

  The second measuring unit 120 is configured to open up to a maximum of 180 degrees with respect to the first measuring unit 110. In the state where the second measuring unit 120 is opened to the maximum angle, the first measuring unit 110 and the second measuring unit 120 are The same plane is formed (see FIG. 1B).

  Of the hinge mechanisms 131 to 133, the hinge mechanism 131 is assumed to be inserted with wiring for electrically connecting the first measurement unit 110 and the second measurement unit 120. Thereby, transmission / reception of signals between the first measurement unit 110 and the second measurement unit 120 is possible.

  Further, the side surface 111 of the first measurement unit 110 and the side surface 121 of the second measurement unit 120 are configured to be opposed to each other in a state of being opened up to the maximum angle (180 degrees). In addition, rectangular connection portions 134 and 135 are arranged.

  Each of the connecting portions 134 and 135 is configured by a member such as a magnet, and is configured such that the opposing surfaces are attracted to each other when the connecting portions 134 and 135 are opened to the maximum angle. Thereby, the 2nd measurement part 120 can maintain stably the state opened to the maximum angle with respect to the 1st measurement part 110. FIG.

  Further, the connecting portions 134 and 135 are configured to be electrically connected to each other in a state where the second measuring unit 120 is opened to the maximum angle with respect to the first measuring unit 110, and up to the maximum angle. It also functions as a contact to detect that it is open.

  FIG. 1B shows a state in which the second measuring unit 120 is opened to the maximum angle with respect to the first measuring unit 110.

  In FIG. 1B, a measurement surface 112 of the first measurement unit 110 is a surface on which the right foot is placed when the subject measures the weight. On the other hand, the measurement surface 122 of the second measurement unit 120 is a surface on which the left foot is placed when the subject measures the weight. For this reason, the measurement surfaces 112 and 122 have such a size that each foot of the subject can be placed. In the present embodiment, for example, l = 300 mm and w = 100 mm.

  The measurement surfaces 112 and 122 are provided with conductive rubbers 141 to 148 inside (details will be described later with reference to FIG. 2), and an external force applied downward is detected by placing a foot on each surface ( In the present embodiment, it is assumed that each of the measurement surfaces 112 and 122 corresponds to a load of 20 to 50 kg). Thus, the thickness h of the measurement surfaces 112 and 122 can be reduced by adopting a configuration in which the conductive rubbers 141 to 148 are arranged as sensors for detecting weight (weight according to the present embodiment). In the case of a total of 100, h = about 5 to 30 mm).

  In addition, various buttons for inputting various instructions to the weight scale 100 are arranged on the operation unit 113. In the operation unit 113, a measurement mode button 114 is a button for measuring body weight. When the measurement mode button 114 is pressed, the scale 100 shifts to the measurement mode.

  The display mode button 115 is a button for displaying data such as history of weight data in the past weight measurement and data of the center of gravity at the time of weight measurement. The weight scale 100 is displayed when the display mode button 115 is pressed. Enter mode.

  The data transmission mode button 116 is a button for transmitting data that can be displayed in the display mode to an external device (such as a personal computer or a mobile phone (not shown)). When the data transmission mode button 116 is pressed, the weight scale 100 shifts to the data transmission mode.

  The zero point adjustment button 117 is a button for adjusting the zero point of the scale 100, and the weight adjustment is performed when the zero point adjustment button 117 is pressed while nothing is placed on the measurement surfaces 112 and 122. The total 100 is automatically adjusted so that the weight indication value becomes zero.

  The arrow keys and the determination key 118 are keys for moving the cursor displayed on the display unit 123 up and down, left and right, and selecting the display content displayed at the cursor position.

  The display unit 123 displays the measured weight data in the measurement mode, and displays the history of the weight data in the past weight measurement, the position of the center of gravity at the time of the weight measurement, and the like in the display mode.

  The power switch 151 is used to turn on / off the power of the scale 100. The connector 152 is connected to a cable for transmitting various data to an external device (such as a personal computer or a mobile phone not shown).

<2. Structure of measuring surface of weight scale and detection principle of sensor>
Next, the configuration of the measurement surfaces 112 and 122 of the scale 100 and the principle of detection of external force in the conductive rubbers 141 to 148 arranged as sensors for detecting the weight in the measurement surfaces 112 and 122 will be described.

  FIG. 2 is a diagram for explaining the configuration of the measurement surface 122 of the weight scale 100 and the principle of detection of external force in the conductive rubber 148.

  As shown in FIG. 2, conductive rubbers 145 to 148 are provided on the measurement surface 122 between a rectangular flat plate 201 made of a predetermined material (for example, an acrylic plate having a thickness of 3 mm) and the rectangular flat plate 202. It is arranged near each vertex of 122. Each conductive rubber 145 to 148 is formed of a rectangular flat plate having a side of about 10 mm.

  Here, the conductive rubber is constituted by dispersing conductive particles in an insulating elastic polymer (rubber), and in a state where there is no external force, the conductive particles are not in contact with each other. Does not flow, but when an external force is applied, particles are brought into contact with each other, so that a current flows.

  Since the current value changes in proportion to the magnitude of the external force, the magnitude of the external force can be obtained by measuring the change in the resistance value when the applied force is constant and the external force is applied.

  In addition, as a measuring method for measuring the change of the resistance value, two electrodes are arranged on the same plane of the conductive rubber, and one electrode is arranged on each of the front and back surfaces of the conductive rubber. Although there is a method, the weight scale 100 according to the present embodiment employs a method in which one electrode is disposed on each of the front and back surfaces of the conductive rubber.

  The partial enlarged display 210 schematically shows a configuration for measuring a change in resistance value when an external force is applied to the conductive rubber 148. One electrode 211, 212 is arranged on each of the front and back surfaces of the conductive rubber 148. The power source 213 is configured to supply a constant voltage.

  Under such a configuration, when an external force acts in the direction of the arrow 214 (direction approximately perpendicular to the plane of the conductive rubber 148), current flows in the direction of the arrow 215 between the electrode 211 and the electrode 212. In the weight scale 100 according to the present embodiment, the amount of change in the resistance value when a known external force is applied to the conductive rubber 148 is measured in advance and stored as table data. To do. The weight scale 100 obtains the external force acting on the conductive rubber 148 by referring to the table data at the time of weight measurement.

  Although only the conductive rubber 148 has been described here, the other conductive rubbers 141 to 147 have the same configuration. Although the measurement surface 122 has been described with reference to FIG. 2, the measurement surface 112 has the same configuration.

  Therefore, the amount of change in resistance value of each of the conductive rubbers 141 to 144 disposed on the measurement surface 112 and the amount of change in resistance value of each of the conductive rubbers 145 to 148 disposed on the measurement surface 122 are added. Thus, the total of external forces acting on the measurement surfaces 112 and 122 (namely, subject weight data) can be calculated.

<3. Mode transition on scales>
Next, the mode transition in the weight scale 100 will be described with reference to FIG. As described above, the weight scale 100 according to the present embodiment has “measurement mode”, “display mode”, and “data transmission mode”, and immediately after the power switch 151 is pressed, the measurement mode is set. Configured to start.

  As shown in FIG. 3, when the display mode button 115 is pressed during the measurement mode, the display mode is entered. On the other hand, when the measurement mode button 114 is pressed in the state of transition to the display mode, the measurement mode is restored.

  Further, when the data transmission mode button 116 is pressed during the measurement mode, the mode shifts to the data transmission mode. Even when the data transmission mode button 116 is not pressed, a cable for transmitting to an external device (such as a personal computer or a mobile phone) is inserted into the connector 152, and between the scale 100 and the external device. When the communication connection is established, the mode automatically shifts to the data transmission mode. In addition, when the measurement mode button 114 is pressed in the state of shifting to the data transmission mode, the measurement mode is restored.

  Furthermore, when the data transmission mode button 116 is pressed during the display mode, the mode shifts to the data transmission mode. Even when the data transmission mode button 116 is not pressed, a cable for transmitting to an external device (such as a personal computer or a mobile phone) is inserted into the connector 152, and between the scale 100 and the external device. When the communication connection is established, the mode automatically shifts to the data transmission mode. In addition, when the display mode button 115 is pressed in the state of shifting to the data transmission mode, the display mode is restored.

<4. Functional configuration of scales>
Next, the functional configuration of the weight scale 100 will be described. FIG. 4 is a diagram showing a functional configuration of the weight scale 100. In addition, about the structure already demonstrated using FIG. 1, suppose that the same reference number is attached | subjected and description is abbreviate | omitted here.

  In FIG. 4, the amplifying unit 401 amplifies the current values output from the conductive rubbers 141 to 144, performs A / D conversion, and inputs them to the control unit 405 as weight data. Similarly, the amplifying unit 402 amplifies the current values output from the conductive rubbers 145 to 148, performs A / D conversion, and inputs the current values to the control unit 405 as weight data.

  The GPS sensor (latitude value acquisition means) 403 specifies a measurement location when performing weight measurement using the weight scale 100 and inputs it to the control unit 405 as a latitude value.

  The power supply unit 404 is controlled to be turned on / off by the power switch 151, and when turned on by the operation of the power switch 151, supplies power to each unit via the control unit 405.

  The control unit 405 controls each unit constituting the weight scale 100. Details of various functions realized by the control unit 405 will be described later.

  The memory unit 406 stores the weight data of the subject calculated by the control unit 405 and the like. The interface unit 407 includes a connector 152. The interface unit 407 transmits weight data stored in the memory unit 406 to an external device connected via the connector 152, and receives a predetermined instruction from the external device.

<5. Functions of control unit in measurement mode>
Next, various functions realized by the control unit 405 in the measurement mode will be described with reference to FIG. In FIG. 5, the overall supervision unit 501 controls the operation of each unit (502 to 512) executed when weight measurement is performed in the measurement mode.

  The connection status confirmation unit 502 confirms whether or not the connection units 134 and 135 are connected based on an instruction from the overall administration unit 501 and transmits the confirmation result to the overall administration unit 501.

  The weight data input unit 503 acquires each weight data output from the amplification units 401 and 402 based on an instruction from the overall control unit 501. The GPS data input unit 511 acquires the latitude value output from the GPS sensor 403 based on an instruction from the overall control unit 501.

  The weight data correction unit 504 uses each weight data acquired by the weight data input unit 503 (weight data of each of the conductive rubbers 141 to 148) using the latitude value acquired by the GPS data input unit 511. To correct.

  Here, the latitude correction of the weight data will be described with reference to FIG. FIG. 6 is a diagram showing the relationship between each weight data output when a calibration block having a known weight as a reference is individually placed on each of the conductive rubbers 141 to 148, and the latitude. . As shown in FIG. 6, the outputs from the conductive rubbers 141 to 148 change depending on the latitude value due to the influence of the rotation of the earth (see calibration data). For this reason, in order to improve the accuracy of weight measurement, it is necessary to correct the weight data in accordance with the latitude of the measurement location.

  Therefore, in the weight scale 100 according to the present embodiment, the weight data input unit 503 determines the difference (change rate) between the reference value (the prescribed weight of the calibration block) and the value of the calibration data at the current latitude. Latitude correction is performed on each acquired weight data.

  Returning to FIG. The weight calculation unit 505 calculates the weight data of the subject by adding each weight data (weight data of each of the conductive rubbers 141 to 148) corrected by the latitude in the weight data correction unit 504. Further, by adding the weight data of each of the conductive rubbers 141 to 144, weight data (right foot side weight data) applied to the subject's right foot at the time of weight measurement is calculated. Further, by adding the weight data of each of the conductive rubbers 145 to 148, weight data (left foot side weight data) applied to the subject's left foot during weight measurement is calculated.

  The center-of-gravity A calculation unit 506 is based on the weight data of the conductive rubbers 141 to 144 arranged on the measurement surface 112 and the position coordinates indicating the positions of the conductive rubbers 141 to 144 in the measurement surface 112. The center-of-gravity position data of the right foot placed on the measurement surface 112 is calculated.

  The center-of-gravity B calculation unit 507 is based on the weight data of the conductive rubbers 145 to 148 disposed on the measurement surface 122 and the position coordinates indicating the positions of the conductive rubbers 145 to 148 in the measurement surface 122. The gravity center position data of the left foot placed on the measurement surface 122 is calculated.

  The center-of-gravity AB calculation unit 508 is configured to measure the weight at the time of weight measurement based on the weight data of the conductive rubbers 141 to 148 disposed on the measurement surfaces 112 and 122 and the relative positional relationship of the conductive rubbers 141 to 148. The center of gravity position data of the person is calculated.

  The measurement data control unit 509 includes the body weight data of the subject, the right foot side weight data of the subject, the left foot side weight data of the subject, The center of gravity position data of the examiner's right foot, the center of gravity of the subject's left foot, and the center of gravity of the subject are written in the memory unit 406, the subject's weight data, and the subject's right foot side weight. The data and the left foot side weight data of the subject are displayed on the display unit 123, respectively.

<6. Flow of weight measurement process on the scale>
Next, the flow of the weight measurement process in the weight scale 100 that is controlled in the overall administration unit 501 will be described. FIG. 7 is a flowchart showing a flow of weight measurement processing in the weight scale 100.

  When the power switch 151 is turned on or the measurement mode button 114 is pressed, the weight measurement process shown in FIG. 7 is started.

  In step S701, the overall administration unit 501 inquires of the connection state confirmation unit 502 whether or not the connection units 134 and 135 are connected. If the connection status confirmation unit 502 sends a confirmation result indicating that the connection units 134 and 135 have been connected, the process proceeds to step S702.

  On the other hand, if a confirmation result indicating that the connection cannot be confirmed is sent, the process proceeds to step S709. In step S <b> 709, an error message indicating that the second measurement unit 120 is not opened to the maximum angle with respect to the first measurement unit 110 is displayed on the display unit 123.

  In step S702, the overall control unit 501 instructs the GPS data input unit 511 to acquire a latitude value. Thereby, the GPS data input unit 511 acquires the latitude value.

  In step S <b> 703, the overall administration unit 501 determines whether the acquisition of the latitude value in the GPS data input unit 511 has been completed. If it is determined that the acquisition of the latitude value in the GPS data input unit 511 is completed, the process proceeds to step S704.

  In step S <b> 704, the overall administration unit 501 instructs the weight data input unit 503 to acquire weight data. As a result, the weight data input unit 503 starts acquiring weight data of the conductive rubbers 141 to 148.

  If weight data acquisition is started by the weight data input unit 503, the process proceeds to step S 705, where the overall management unit 501 performs latitude correction of the acquired weight data on the weight data correction unit 504. Instruct. Accordingly, the weight data correction unit 504 corrects the acquired weight data using the latitude value acquired by the GPS data input unit 511. It should be noted that the correction content has already been described with reference to FIG.

  When the latitude correction of the weight data is started by the weight data correction unit 504, the process proceeds to step S706, where the overall administration unit 501 sends the weight calculation unit 505 to the center of gravity AB calculation unit 508 of the subject. Calculation of body weight data, subject right foot side weight data, subject left foot side weight data, subject right foot centroid position data, subject left foot centroid position data, subject centroid position data Instruct.

  When the calculation of the respective data is completed in the weight calculation unit 505 to the center-of-gravity AB calculation unit 508, the process proceeds to step S <b> 707, and the overall administration unit 501 sends the measurement data control unit 509 as the calculation result as the subject. The body weight data, the subject's right foot side weight data, and the subject's left foot side weight data are displayed. As a result, the measurement data control unit 509 displays these data on the display unit 123.

  Further, in step S708, it is monitored whether or not the weight data corrected by the latitude in the weight data correction unit 504 is within a predetermined fluctuation range for a predetermined time, and the calculation result is obtained. Judge whether it is stable or not.

  If it is determined in step S708 that the calculation result is stable, the process proceeds to step S709, and the overall control unit 501 calculates the weight of the subject calculated in the time zone determined to be stable. Data, subject right foot side weight data, subject left foot side weight data, subject right foot centroid position data, subject left foot centroid location data, subject centroid location data, memory The measurement data control unit 509 is instructed to store in the unit 406.

  The measurement data control unit 509 calculates the subject's weight data, the subject's right foot side weight data, the subject's left foot side weight data, the subject's weight calculated in the time period determined to be stable The gravity center position data of the right foot of the person, the gravity center position data of the subject's left foot, and the gravity center position data of the subject are stored in the memory unit 406 in association with the measurement date and time.

<7. Display on display>
Next, display contents displayed on the display unit 123 will be described. FIG. 8 is a diagram illustrating an example of display contents displayed on the display unit 123.

  FIG. 8A is an example of display content displayed as a calculation result in the measurement mode. As shown in FIG. 8A, in the upper right area 801 of the display unit 123, the right foot side weight data (“30.0 kg”) of the subject is displayed. In addition, in the upper left area 802 of the display unit 123, the left foot side weight data (“28.5 kg”) of the subject is displayed. Further, the weight data (“58.5 kg”) of the subject is displayed in the central area 803 of the display unit 123.

  At the lower end of the display unit 123, the power mark 804 is a mark representing the power capacity of the power unit 404 of the scale 100. A connection mark 805 is a mark indicating that the connection parts 134 and 135 are connected. A date / time mark 806 represents the current date / time. Furthermore, the latitude mark 807 represents the latitude of the measurement location.

  FIG. 8B shows the subject's right foot centroid position data, the subject's left foot centroid position data, and the subject's centroid position data stored in the memory unit 406 in the display mode. It shows how it is displayed on the screen.

  In FIG. 8B, outer edges 811 and 812 indicate outer edges of the measurement surfaces 112 and 122, respectively. The center-of-gravity position 813 indicates the center-of-gravity position of the subject's right foot, the center-of-gravity position 814 indicates the center-of-gravity position of the subject's left foot, and the center-of-gravity position 815 indicates the center-of-gravity position of the subject.

  FIG. 8C shows a state in which the weight data of the subject stored in the memory unit 406 together with the measurement date / time is displayed on the display unit 123 in the display mode. In FIG. 8C, the horizontal axis represents the date and the vertical axis represents the weight data of the subject. Thus, the subject can easily know the transition of the weight data in the past weight measurement by displaying it in association with the date.

  The display contents to be displayed on the display unit 123 in the display mode are selected from a menu list (not shown) displayed on the display unit 123 using the arrow keys and the decision key 118 to select a desired display menu. Shall be determined by

As is clear from the above description, in the weight scale 100 according to the present embodiment,
-It was set as the structure which uses conductive rubber as a sensor of a measurement part.
-It was set as the structure which connects two separate measurement parts so that opening and closing is possible (foldable).

  As a result, the weight and thickness can be reduced, and the size can be reduced, and the convenience of carrying can be improved. As a result, it has become possible to provide an optimal weight scale for those who want to continuously measure weight, such as those who actively carry out daily weight management and dialysis patients.

Moreover, in the weight scale 100 according to the present embodiment,
-Considering the latitude dependence of the weight data, the latitude value of the measurement location is acquired at the time of weight measurement, and the weight data is corrected to the latitude.

  As a result, it has become possible to improve the measurement accuracy of weight measurement.

Moreover, in the weight scale 100 according to the present embodiment,
・ Considering that the reproducibility of measurement data is reduced due to the opening and closing angles between the first measurement unit and the second measurement unit, a connection unit is provided so that the open state up to the maximum angle can be maintained stably. .
-It was set as the structure which starts acquisition of weight data on the condition that the connection part is connected at least.

  As a result, a reduction in measurement error can be realized.

Furthermore, in the weight scale 100 according to the present embodiment,
-It was set as the structure which processes the weight data each acquired in the two measurement parts independently.

  As a result, the weight data of each of the two measuring units can be displayed. Also, the center of gravity position on the right foot side and the center of gravity position on the left foot side can be displayed.

[Second Embodiment]
In the first embodiment, the GPS scale is mounted on the scale 100 and the latitude value of the measurement place when performing weight measurement is obtained from the GPS sensor. However, the present invention is not limited to this.

  For example, when shifting to the measurement mode, the display unit 123 is configured to display a screen for prompting input of information regarding the measurement location, and to allow the subject to input the measurement location, thereby acquiring the latitude value. May be. Details of this embodiment will be described below.

<1. Display on display>
FIG. 9 is a diagram illustrating an example of the display screen of the display unit 123 when the power switch 151 is pressed and the measurement mode is activated, or when the measurement mode button 114 is pressed and the measurement mode is entered. .

  As shown in FIG. 9, in the measurement mode, a screen 900 that prompts the user to input information about the measurement location is displayed. In FIG. 9, input fields 901 to 904 are fields for inputting information for specifying a measurement location. Each input field is provided with a down arrow button, and by pressing the down arrow button, an information list to be input in each input field is displayed (in the example of FIG. The downward arrow button is pressed and the information list 911 is displayed).

  The subject can input information in the input field by selecting predetermined information from the information list.

  An OK button 905 is a button for instructing that the input of information in the input fields 901 to 904 is completed. Thereby, the scale 100 extracts the current latitude value based on the information, and starts acquiring weight data.

<2. Functions of control unit in measurement mode>
Next, functions of the control unit in the measurement mode of the weight scale 100 according to the present embodiment will be described. FIG. 10 is a block diagram illustrating functions of the control unit 1001 in the measurement mode of the weight scale 100. Note that the same functional blocks as those of the control unit 405 in the measurement mode of the scale 100 according to the first embodiment described with reference to FIG.

  In FIG. 10, a measurement location data input unit 1011 receives information on a measurement location input by a subject via a screen 900. The latitude value acquisition unit 1012 acquires the latitude value corresponding to the information regarding the measurement location received by the measurement location data input unit 1011.

  In the scale 100 according to the present embodiment, it is assumed that all latitude values corresponding to measurement locations that can be selected in the input fields 901 to 904 are held as a table, and the latitude value acquisition unit 1012 has an input field. The latitude value corresponding to the information input in 901 to 904 is obtained by searching the table.

  The latitude value acquired by the latitude value acquisition unit 1012 is input to the weight data correction unit 504, and is used by the weight data correction unit 504 for latitude correction.

  As is clear from the above description, in the weight scale according to the present embodiment, instead of mounting the GPS sensor, before the weight measurement is performed, the subject is input information regarding the measurement location where the weight measurement is performed. It was.

  As a result, it has become possible to provide inexpensively a scale that can measure the weight with high measurement accuracy in consideration of the latitude dependence of the weight data.

[Third Embodiment]
In the first and second embodiments, the latitude value is acquired and the weight data is corrected using the latitude value. However, the present invention is not limited to this. For example, the altitude of the measurement location may be specified based on the output from the GPS sensor 403 or information on the measurement location input by the measurement location data input unit 1011 and correction based on the altitude may be performed together. . In the case where the altitude of the measurement location is specified based on the information regarding the measurement location input by the measurement location data input unit 1011, for example, the altitude corresponding to the information regarding the measurement location is held as table data. The altitude is specified by searching the table data.

  In the first and second embodiments, the interface unit 407 is connected to an external device by wire, but the present invention is not limited to this, and may be configured to be performed wirelessly.

  In the first and second embodiments, the measurement data is written in the memory unit 406. However, the present invention is not limited to this. For example, the measurement data may be written in the RFID tag. In this case, the interface unit 407 is not necessary, and measurement data can be transmitted to the outside simply by bringing the scale 100 close to an external RFID reader.

  In the first and second embodiments, the display unit 123 and the operation unit 113 are arranged. However, the present invention is not limited to this. For example, the external device is provided with the functions of the display unit and the operation unit, the overall control unit 501 operates based on an instruction from the external device, and the measurement data control unit 509 transmits the measurement data in real time via the interface unit 407. It is also possible to use a configuration for transmitting to the external device. In this case, the connection with the external device is not limited to a wired connection, and may be wireless.

  Moreover, in the said 1st and 2nd embodiment, although it was set as the structure which distributes four conductive rubbers in the vicinity of each vertex position, the number of conductive rubbers is not limited to this, The arrangement of the conductive rubber is not limited to this.

  Moreover, in the said 1st and 2nd embodiment, although it was set as the structure which connects the 1st measurement part 110 and the 2nd measurement part 120 by a hinge mechanism, this invention is not limited to this. The first measurement unit 110 and the second measurement unit 120 may be configured to be separably connected.

DESCRIPTION OF SYMBOLS 100 ... Scale, 110 ... 1st measurement part, 113 ... Operation part, 114 ... Measurement mode button, 115 ... Display mode button, 116 ... Data transmission button, 117 ..Zero point adjustment button, 118..., Arrow key and enter key, 120... , 141-148 ... conductive rubber, 151 ... power switch, 152 ... connector, 211-212 ... electrode, 401-402 ... amplifier, 403 ... GPS sensor (latitude (Value acquisition means), 404 ... power supply unit, 405 ... control unit, 406 ... memory unit, 407 ... interface unit, 501 ... overall control unit, 502 ... connection state confirmation unit, 503 ... Weight de Data input unit, 504... Weight data correction unit, 505... Weight calculation unit, 506... Centroid A calculation unit, 507. ... Measurement data control unit, 511 ... GPS data input unit, 804 ... Power supply mark, 805 ... Connection mark, 806 ... Date mark, 807 ... Latitude mark, 900 ... Screen 901 to 904... Input field, 905... OK button, 1011... Measurement location data input unit, 1012.

Claims (7)

A first measuring unit having a flat plate shape and a plurality of conductive rubbers for detecting an external force acting in a direction substantially perpendicular to the plane;
Separate from the first measurement unit, which has a plurality of conductive rubbers having an external dimension substantially equal to the first measurement unit and detecting an external force acting in a direction substantially orthogonal to the plane. A second measuring unit;
A connecting member that connects the side surface of the first measurement unit and the side surface of the second measurement unit so that the same plane is formed by the first measurement unit and the second measurement unit; A weight scale comprising:
Latitude value acquisition means for acquiring a latitude value of a place where weight measurement is performed using the scale,
When the subject is placed across the first measurement unit and the second measurement unit, the external force detected in each of the conductive rubbers arranged in the first and second measurement units is detected. The acquisition means that acquires the condition that the side surface of the first measurement unit and the side surface of the second measurement unit are connected by the connecting member and the latitude value is acquired by the latitude value acquisition unit. When,
Correction means for calculating weight data for each conductive rubber by correcting each external force acquired by the acquisition means using the acquired latitude value;
A weight scale comprising: weight data calculating means for calculating weight data of the subject by adding weight data for each conductive rubber calculated by the correcting means.   The side surface of the first measurement unit and the side surface of the second measurement unit are pivotally connected via a hinge mechanism, and the connection member includes the first measurement unit and the second measurement unit. The rotation range between the first measurement unit and the second measurement unit is regulated so that an angle between the first measurement unit and the second measurement unit is 180 degrees or less. The scale described. Of the weight data for each conductive rubber calculated by the correction means, by adding the weight data for the conductive rubber disposed in the first measurement unit, one of the subjects Calculate weight data on the foot,
Of the weight data for each conductive rubber calculated by the correction means, by adding the weight data for the conductive rubber disposed in the second measurement unit, the other of the subject The weight scale according to claim 1, further comprising one-leg weight data calculating means for calculating weight data concerning the foot.   A center-of-gravity position calculating means for calculating a center-of-gravity position of the subject based on weight data for each conductive rubber calculated by the correcting means and position information indicating a relative position of the conductive rubber; The weight scale according to claim 1, further comprising: Of the weight data for each conductive rubber calculated by the correction means, the weight data for the conductive rubber arranged in the first measurement unit, and the conductivity in the first measurement unit. Based on the position information indicating the position of the rubber, calculate the position of the center of gravity of one foot of the subject,
Of the weight data for each conductive rubber calculated by the correction means, the weight data for the conductive rubber disposed in the second measurement unit, and the conductivity in the second measurement unit. The weight scale according to claim 1, further comprising one foot center of gravity position calculating means for calculating the center of gravity of the other foot of the subject based on the position information indicating the position of the rubber. A GPS sensor;
The scale according to claim 1, wherein the latitude value acquisition unit acquires the latitude value from the GPS sensor. Input means for inputting information on a place where weight measurement is performed using the scale,
The scale according to claim 1, wherein the latitude value acquisition unit acquires the latitude value based on information on the location input by the input unit.