Storage device

Abstract

To provide a measurement device capable of accurately measuring the weight of an object.SOLUTION: A storage device 100 is provided, comprising a housing 101, an open / closable storage box 102 supported by the housing, a weight sensor 130, and a control unit 110 configured to compute the weight of the storage box by acquiring a first measurement obtained by the weight sensor when the storage box is opened and then acquiring a second measurement, including the weight of the storage box, obtained by the weight sensor when the storage box is closed.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a storage device technology for measuring the weight of a storage box. [Background technology]

[0002] Conventionally, storage devices for measuring the weight of various objects have been known. For example, Japanese Patent Application Laid-Open No. 2020-008331 (Patent Document 1) discloses a weight measurement means and an inventory management system. According to Patent Document 1, the weight measurement means is a versatile weight measurement means that can be used for inventory management. The weight measurement means, the server, and the terminal device are communicatively connected to each other via a network such as the Internet. The server includes an order request receiving unit that receives an order request for each product transmitted from the terminal device of the inventory manager of the product, and a product ordering unit that, when the order request receiving unit receives an order request for the product, orders the product to the supplier of the product stored in the memory unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-008331 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a storage device capable of accurately measuring the weight of a storage box that stores consumables and the like. [Means for solving the problem]

[0005] According to one aspect of the present invention, there is provided a storage device comprising: a housing; a storage box supported by the housing and capable of being opened and closed; a weight sensor; and a control unit that calculates the weight of the storage box by obtaining a first measurement value by the weight sensor when the storage box is opened, and by obtaining a second measurement value including the weight of the storage box by the weight sensor when the storage box is closed. Effect of the Invention

[0006] As described above, according to the present invention, a storage device capable of accurately measuring the weight of a storage box that stores consumables and the like is provided. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a front perspective view showing a state in which a storage box of the storage device according to the first embodiment is closed. [Diagram 2] 1 is a side cross-sectional view showing a state in which a storage box of a storage device according to a first embodiment is closed. [Diagram 3] FIG. 2 is a front perspective view showing a state in which a storage box of the storage device according to the first embodiment is open. [Figure 4] 1 is a side cross-sectional view showing a state in which a storage box of a storage device according to a first embodiment is open. [Diagram 5] FIG. 4 is a conceptual diagram showing an outline of the operation of the storage device according to the first embodiment. [Figure 6] FIG. 1 is a block diagram showing a configuration of a storage device according to a first embodiment. [Figure 7] FIG. 4 is a diagram showing measurement history data according to the first embodiment. [Figure 8] 5 is a flowchart showing a process of the storage device according to the first embodiment. [Figure 9] FIG. 1 is a conceptual diagram showing a network system including a storage device according to a first embodiment. [Figure 10] FIG. 11 is a front perspective view showing a state in which a storage box of a storage device according to a second embodiment is closed. [Figure 11] FIG. 11 is a side cross-sectional view showing a state in which a storage box of a storage device according to a second embodiment is closed. [Figure 12] FIG. 11 is a front perspective view showing a state in which a storage box of a storage device according to a second embodiment is open. [Figure 13] FIG. 11 is a side cross-sectional view showing a state in which a storage box of a storage device according to a second embodiment is open. [Figure 14] FIG. 11 is a side cross-sectional view showing a state in which a storage box of another storage device according to the second embodiment is closed. [Figure 15] FIG. 11 is a side cross-sectional view showing a state in which a storage box of another storage device according to the second embodiment is open. [Figure 16] FIG. 13 is a block diagram showing a configuration of a server according to a fifth embodiment. [Figure 17] 13 is a flowchart showing information processing in a server according to a fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated. <First embodiment>

[0009] As shown in Fig. 1 to Fig. 4, the storage device 100 according to this embodiment has a substantially rectangular parallelepiped storage box 102 housed inside a substantially rectangular parallelepiped housing 101. More specifically, the location on which the weight of the storage box 102 is applied is configured to be variable. In this embodiment, the storage box 102 is supported by the housing 101 so that the upper part can be rotated in the front-rear direction around a lower end 102X of the front side as an axis. This allows the top of the storage box 102 to be opened and closed.

[0010] The storage box 102 stores consumables such as sanitary products, medicines, seasonings, food, diapers, detergents, cosmetics, and miscellaneous goods.

[0011] More specifically, as shown in Figures 1 and 2, the storage box 102 is in a closed state when its front surface is vertical and its bottom surface is horizontal. On the other hand, as shown in Figures 3 and 4, the storage box 102 is in an open state when its front surface is tilted forward and its bottom surface is inclined.

[0012] Particularly, in this embodiment, a weight sensor 130 for measuring the weight of the storage box 102 including the stored items is disposed directly below the storage box 102. An example of the weight sensor 130 is a load cell. As shown in FIG. 1 and FIG. 2, when the storage box 102 is in the closed state, the entire weight of the storage box 102 is applied to the weight sensor 130. On the other hand, as shown in FIG. 3 and FIG. 4, when the storage box 102 is in the open state, the entire weight of the storage box 102 is applied to the front end 101X of the lower surface of the housing 101 in this embodiment so that the weight of the storage box 102 is not applied to the weight sensor 130. More specifically, the upper end 102Y of the rear wall of the storage box 102 is supported by the back surface of the front upper part 101Y of the housing 101, so that the storage box 102 is maintained in an inclined state.

[0013] In this embodiment, the storage equipment 100 mainly performs the operations shown in Fig. 5. First, with the storage box 102 closed, the storage equipment 100 is in a sleep state (step S002).

[0014] When the user opens the storage box 102, the storage box 102 moves away from the mounting base 131 of the weight sensor 130, the internal open / close detection sensor 180 turns off, and the internal microcomputer, communication module, and the like are started up from the sleep state (step S004). Note that the open / close detection sensor 180 may be a microswitch or the like.

[0015] In this state, the storage equipment 100 measures the weight (first measurement value) by the weight sensor 130 provided under the placement table 131 (step S006). At this time, the temperature sensor 191 measures and stores the temperature.

[0016] Then, when the storage box 102 is closed again, that is, when the weight of the storage box 102 is applied to the weight sensor 130, the internal open / close detection sensor 180 is turned ON (step S008).

[0017] The microcomputer of the storage equipment 100 stores the difference between the current measurement value (second measurement value) of the weight sensor 130 and the measurement value acquired in step S006 as the weight of the storage box 102 (step S010). The microcomputer of the storage equipment 100 calculates and stores the weight of the storage box 102 and the amount of stored items used in the storage box 102. At this time, the temperature sensor 191 measures and stores the temperature.

[0018] The storage device 100 transmits the weight of the storage box 102, the amount of items stored in the storage box 102 used, the temperature sensor measurements, the LED light status, etc. to an app on the smartphone 300 via Bluetooth (registered trademark), or transmits them to the server 200 for the cloud service via a router using Wi-Fi (registered trademark) (step S012). <Overall composition>

[0019] Next, the overall configuration of the storage device 100 according to this embodiment will be described with reference to Fig. 6. The storage device 100 according to this embodiment mainly includes a control unit 110, a weight sensor 130 for measuring weight, a speaker 150, a wireless communication module 160, an open / close detection sensor 180, and a battery 190.

[0020] The control unit 110 is realized by a microcomputer and includes a processor 111, a memory 112, a clock, a timer, etc. The processor 111 controls each part of the storage equipment 100 by executing a program stored in the memory 112. The memory 112 stores the control program, the date and time of measurement by the weight sensor 130, the measurement result, identification information, etc.

[0021] For example, the memory 112 stores measurement history data 112A. As shown in Fig. 7, the measurement history data 112A stores, for each measurement of the weight of the storage box 102, a history number, the measurement date and time, the weight and temperature of the storage box 102 when it is open, the weight and temperature of the storage box 102 when it is closed, the actual weight of the storage box, and the amount of stored items used since the previous measurement. It is preferable that the remaining amount and number of stored items can also be stored.

[0022] Returning to FIG. 6, the weight sensor 130 is disposed directly under the mounting base 131 of the storage box 102 and measures the weight of the storage box 102 including the mounting base 131. The mounting base 131 according to this embodiment has the same size as the storage box 102 in a plan view and supports the entire bottom surface of the storage box 102. In this embodiment, one weight sensor 130L is disposed on the left side of the mounting base 131 and one weight sensor 130R is disposed on the right side of the mounting base 131 in a front view and a plan view. The weight sensors 130L and 130R input measured values ​​to the control unit 110. The control unit 110 calculates the sum of the measured values ​​of the two weight sensors 130L and 130R as the weight measurement result.

[0023] More specifically, in this embodiment, a mounting platform 131 is provided between the weight sensors 130R, 130L and the storage box 102, so that the control unit 110 acquires the total weight of the mounting platform 131, the storage box 102, and the items stored therein.

[0024] The speaker 150 outputs various sounds based on audio signals input from the control unit 110.

[0025] The wireless communication module 160 transmits and receives data to and from a router, a carrier network, the Internet, an external server, and the like via a wireless antenna and the like in accordance with instructions from the control unit 110.

[0026] The open / close detection sensor 180 is disposed directly below the mounting table 131, and inputs the result of the determination as to whether or not the storage BOX 102 is placed on the upper surface of the mounting table 131 to the control unit 110. In this embodiment, the open / close detection sensor 180 includes a magnetic sensor. A magnet 107 is attached to the rear part of the bottom surface of the storage BOX 102. The control unit 110 recognizes that the storage BOX 102 is placed on the upper surface of the mounting table 131 based on a switch-ON signal indicating that the magnetic force is detected from the open / close detection sensor 180. On the other hand, the control unit 110 recognizes that the storage BOX 102 is not placed on the upper surface of the mounting table 131 based on a switch-OFF signal indicating that the magnetic force is not detected from the open / close detection sensor 180.

[0027] The open / close detection sensor 180 is not limited to a magnetic sensor, and may detect the open / close state of the storage box 102 by using a pressure sensor, an acceleration sensor, a weight sensor, or the like. There is no particular limitation to this sensor.

[0028] Particularly, in this embodiment, when the open / close detection sensor 180 is in an OFF state, that is, when the weight of the storage box 102 is not applied to the mounting base 131, the control unit 110 acquires the weight measurement value by the weight sensor 130. Then, when the user closes the storage box 102, that is, when the storage box 102 is placed on the upper surface of the mounting base 131, the open / close detection sensor 180 detects the magnet 107 and transitions to an ON state. The entire weight of the storage box 102 is applied to the mounting base 131. In this embodiment, in this state, the weight of the storage box 102 is measured, and the measurement result is uploaded to the server 200, the smartphone 300, or the like by subtracting the most recent weight measurement value when the storage box 102 was open.

[0029] The battery 190 is for supplying power to each part of the storage device 100 such as the processor 111 and the communication module 160. <Information Processing>

[0030] The following describes information processing for measuring the weight of the storage box 102 in the storage equipment 100 according to this embodiment. The processor 111 executes the processing shown in FIG.

[0031] First, in the power OFF state, the control unit 110, weight sensor 130, wireless communication module 160, etc. are in a sleep state. In this embodiment, when the storage box 102 is placed on the mounting base 131, i.e., when the switch 180 is ON, a predetermined time has elapsed, and the power of the storage device 100 is turned OFF.

[0032] When the storage box 102 is lifted away from the mounting table 131 (YES in step S102), that is, when the switch 180 is turned OFF (YES in step S102), the following process is executed. If the power is OFF (YES in step S106), the control unit 110 is started (step S108). If the power is ON, proceed to step S110.

[0033] Processor 111 of control unit 110 activates weight sensor 130, measures the weight of mounting table 131, and stores the weight in memory 112 (step S110). That is, weight measurement is performed in a state where an object to be measured is not placed on weight sensor 130. At this time, temperature is measured by temperature sensor 191 and stored. After a predetermined time has elapsed, processor 111 transitions the load cell and itself to a sleep state.

[0034] The processor 111 waits again until the switch 180 detects the magnet 107 (step S114).

[0035] If switch 180 is turned ON (YES in step S112), the following process is executed. If the power is OFF (YES in step S116), control unit 110 is started (step S118). If the power is ON, proceed to step S120.

[0036] The processor 111 of the control unit 110 activates the weight sensor 130, measures the weight of the mounting table 131, and stores the weight in the memory 112 (step S120). That is, the weight of the storage box 102 including the mounting table 131 and the stored items is measured. At this time, the temperature is measured by the temperature sensor 191 and stored.

[0037] Processor 111 calculates the weight of storage box 102 and its contents by subtracting the measured weight (second measured value) not including the weight of storage box 102 including stand 131 from the measured weight (first measured value) of storage box 102 including stand 131 and contents (step S122). Processor 111 adds the weight of storage box 102 to measurement history data 112A in memory 112.

[0038] The processor 111 calculates the difference between the previous weight and the current weight as the amount of stored items such as daily necessities used this time, and adds the calculation result to the measurement history data 112A (step S124). If the weight of the empty storage box 102 is registered in the memory 112, the processor 111 can calculate the remaining weight of the stored items by subtracting the empty weight from the current weight of the storage box 102. If the weight of one stored item is known, the processor 111 can calculate the remaining number of stored items by dividing the remaining weight by the weight.

[0039] In this embodiment, the processor 111 activates the wireless communication module 160 and uploads the measurement date and time, the weight of the storage box 102, the amount of stored items used, the remaining weight of the stored items, the remaining number of stored items, etc., together with the identification information of the storage device 100 to the server (step S126).

[0040] In this embodiment, as shown in Fig. 9, the storage equipment 100 exchanges data with the server 200 on the cloud via the router 400 and the Internet. More specifically, the wireless communication module 160 of the storage equipment 100 exchanges data with the server 200 on the cloud via the router 400 and the Internet using Wi-Fi (registered trademark) communication or the like. Alternatively, the wireless communication module 160 may exchange data directly with a communication terminal such as a smartphone 300, tablet, or personal computer using Bluetooth (registered trademark) communication. This makes it possible to check the remaining number of stored items such as daily necessities and to predict the user's physical condition.

[0041] The processor 111 may upload the measurement data to the server 200 every time the weight is measured, or may store the measurement data a predetermined number of times in the memory 112 and upload it collectively to the server 200, or may store the measurement data for a predetermined period in the memory 112 and upload it collectively to the server 200. Alternatively, the measurement values ​​may be stored in the memory 112 when communication fails. <Second embodiment>

[0042] In the above embodiment, the storage box 102 is opened by rotating the upper part around the lower end 102X of the front side. However, the present invention is not limited to such an embodiment. For example, as shown in Figs. 10 to 13, the storage device 100 according to this embodiment is configured such that the approximately rectangular parallelepiped storage box 102 is attached inside the approximately rectangular parallelepiped housing 101 so as to be slidable in the front-rear direction. More specifically, the storage box 102 is provided with a protrusion 105L at the rear of the left side surface and a protrusion 105R at the rear of the right side surface. Meanwhile, a grooved rail 104L is provided on the left side surface of the housing 101, and a grooved rail 104R is provided on the right side surface. The protrusions 105L and 105R are supported in the grooved rails 104L and 104R, so that the storage box 102 is configured to be slidable in the front-rear direction inside the housing 101. This allows the upper surface of the storage box 102 to be opened and closed.

[0043] Particularly, in this embodiment, a weight sensor 130 for measuring the weight of the storage box 102 is disposed directly below the storage box 102. As shown in Figs. 10 and 11, when the storage box 102 is in a closed state, the entire weight of the storage box 102 is applied to the weight sensor 130. More specifically, the bottom surfaces of the rear ends 104X of the grooved rails 104L and 104R are configured to become lower toward the rear. As a result, as the storage box 102 moves toward the rear, the protrusions 103L and 103R are configured to descend along the bottom surfaces. There is no protrusion provided at the front of the storage box 102, and as a result, the entire weight of the storage box 102 is configured to be applied to the placement platform 131 and the weight sensor 130.

[0044] On the other hand, as shown in Figures 12 and 13, when storage box 102 is in the open state, the weight of the front side of storage box 102 is placed on the front end of housing 101, and the weight of the rear side of storage box 102 is placed on grooved rails 104L, 104R via protrusions 105L, 105R, so that the weight of storage box 102 is not placed on weight sensor 130 at all.

[0045] In this embodiment as well, the open / close detection sensor 180 is disposed directly below the mounting table 131, and inputs the result of the determination as to whether or not the storage BOX 102 is located on the upper surface of the mounting table 131 to the control unit 110. For example, the open / close detection sensor 180 includes a magnetic sensor. A magnet 107 is attached to the rear part of the bottom surface of the storage BOX 102. The control unit 110 recognizes that the storage BOX 102 is placed on the upper surface of the mounting table 131 based on a switch-ON signal indicating that the magnetic force is detected from the open / close detection sensor 180. On the other hand, the control unit 110 recognizes that the storage BOX 102 is not placed on the upper surface of the mounting table 131 based on a switch-OFF signal indicating that the magnetic force is not detected from the open / close detection sensor 180.

[0046] In yet another embodiment, as shown in Figures 14 and 15, when the storage box 102 slides forward, it is supported so that none of the weight of the storage box 102 is placed on the mounting base 131 or the weight sensor 130, and when the storage box 102 slides backward, the entire weight of the storage box 102 is placed on the weight sensor 130.

[0047] In other words, as long as the weight of storage box 102 is not applied to weight sensor 130 when storage box 102 is open, and the weight of storage box 102 is applied to weight sensor 130 when storage box 102 is closed, the configuration is not limited to a specific one. <Third embodiment>

[0048] In the above embodiment, the mounting base 131 is provided between the weight sensors 130R, 130L and the storage box 102. That is, the weight sensor 130 obtains the weight of the mounting base 131 as a reference value when the storage box 102 is open, and obtains the total weight of the mounting base 131, the storage box 102, and the stored items when the storage box 102 is closed.

[0049] However, the storage device 100 may not have the mounting base 131, and the storage box 102 may directly abut against the weight sensors 130R, 130L. In this embodiment, the weight sensor 130 obtains the weight of the storage box 102 when nothing is placed on it and passes it to the control unit 110 when the storage box 102 is open, and obtains the total weight of the storage box 102 and its stored items and provides it to the control unit 110 when the storage box 102 is closed. <Fourth embodiment>

[0050] In the above embodiment, the left weight sensor 130L and the right weight sensor 130R are disposed below the storage box 102. The control unit 110 performs a weight measurement process that does not include the weight of the measurement object and obtains the weight of the storage box 102 and the mounting table 131 by adding up the measured values ​​of the left and right weight sensors 130L, 130R.

[0051] However, the number and arrangement of the weight sensors 130 are not limited. For example, as shown in Fig. 14 and Fig. 15, a left front weight sensor 130RF, a left rear weight sensor 130RB, a right front weight sensor 130LF, and a right rear weight sensor 130LB may be arranged directly under the mounting table 131. In this case, when the storage box 102 is opened, the control unit 110 acquires a weight not including the weight of the measurement object by summing up the measured values ​​of the four weight sensors 130RF, 130RB, 130LF, and 130LB, and when the storage box 102 is opened, the control unit 110 acquires the weight of the storage box 102 and the mounting table 131 by summing up the measured values ​​of the four weight sensors 130RF, 130RB, 130LF, and 130LB.

[0052] Alternatively, one load cell may be disposed directly below the center of the mounting table 131 or directly below the center of the storage box 102 in the closed state. <Fifth embodiment>

[0053] In the above embodiment, the storage equipment 100 calculates the usage and remaining amount of stored items such as daily necessities, but some or all of these functions may be installed in the server 200 or the smartphone 300. For example, as shown in Fig. 16, the CPU 210 of the server 200 may execute a part of the process shown in Fig. 17 according to the program in the memory 220.

[0054] For example, the CPU 210 receives the weight of the storage box 102 in an open state from the storage equipment 100, that is, the measured weight not including the weight of the measurement object, via the communication interface 260 (step S210).

[0055] Next, the CPU 210 receives the weight of the storage box 102 in a closed state from the storage equipment 100 via the communication interface 260 (step S220).

[0056] The CPU 210 subtracts the measured weight not including the weight of the measurement target from the measured weight of the storage box 102 including the mounting table 131 and the stored items to calculate the weight of the storage box 102 and its stored items (step S222). The CPU 210 adds the weight of the storage box 102 to the measurement history data 112A in the memory 112.

[0057] The CPU 210 calculates the difference between the previous weight and the current weight as the amount of stored items such as daily necessities used this time, and adds the calculation result to the measurement history data 112A corresponding to the storage equipment 100 (step S224).

[0058] The CPU 210 can calculate the remaining number of stored items based on the usage of daily necessities, etc., calculate the remaining number from the weight of the storage box 102 at the time of filling and the current weight of the storage box 102, and predict the user's physical condition, etc.

[0059] Naturally, instead of the CPU 210 of the server 200, a CPU of a communication terminal such as a smartphone 300 may execute various processes based on the data from the storage equipment 100. <Summary>

[0060] In the above embodiment, a storage device is provided that includes a housing, a storage box supported by the housing and capable of being opened and closed, a weight sensor, and a control unit that calculates the weight of the storage box by obtaining a first measurement value by the weight sensor when the storage box is opened, and obtaining a second measurement value including the weight of the storage box by the weight sensor when the storage box is closed.

[0061] Preferably, the housing is provided with a structure for supporting the storage box so that the weight of the storage box is not applied to the weight sensor when the storage box is open.

[0062] Preferably, the housing is provided with a member as a structure for supporting the storage box rotatably about a front lower part of the storage box as a base point.

[0063] Preferably, the housing is provided with rails as structures for slidably supporting both side surfaces of the storage box.

[0064] Preferably, the storage device further includes a detection sensor for detecting that the storage box is closed. The control unit is activated when the storage box is opened and obtains a first measurement value, and when the storage box is closed, obtains the second measurement value to calculate the weight of the storage box, and goes to sleep after a predetermined time has elapsed.

[0065] In the above embodiment, a network system is provided that includes a storage device that transmits a first measurement value by a weight sensor when the storage box is opened and transmits a second measurement value including the weight of the storage box when the storage box is closed, and a server that calculates the weight of the storage box based on the received first measurement value and the received second measurement value.

[0066] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0067] 100: Storage device 101: Housing 101X: Front end 101Y: Upper front 102X: Bottom end 102Y: Upper end 103L: Protrusion 103R: Protrusion 104L: Grooved rail 104R: Grooved rail 104X: Rear end 105L: Protrusion 105R: Protrusion 107: Magnet 110: Control unit 111: Processor 112: Memory 112A: Measurement history data 130: Load cell 130L: Load cell (left) 130R: Load cell (right) 130LF: Load cell (front left) 130LB: Load cell (rear left) 130RF: Load cell (front right) 130RB: Load cell (rear right) 131: Placement table 150: Speaker 160: Wireless communication module 180: Open / close detection switch 190: Battery 200 :Server 210: CPU 220: Memory 260: Communication interface 300: Smartphone 400: Router

Claims

1. A housing and a storage box supported by the housing and capable of being opened and closed; A weight sensor; A storage device comprising: a control unit that calculates the weight of the storage box by obtaining a first measurement value by the weight sensor when the storage box is opened, and obtaining a second measurement value including the weight of the storage box by the weight sensor when the storage box is closed.

2. 2. The storage device according to claim 1, wherein the housing is provided with a structure for supporting the storage box so that the weight of the storage box is not applied to the weight sensor when the storage box is open.

3. The storage device according to claim 2 , wherein the housing is provided with a member as the structure, the member supporting the storage box so as to be rotatable about a front lower portion of the storage box as a base point.

4. The storage device according to claim 2 , wherein the housing is provided with rails as the structure for slidably supporting both side surfaces of the storage box.

5. A detection sensor is further provided for detecting that the storage box is closed.

5. The storage device according to claim 1, wherein the control unit is activated when the storage box is opened, acquires the first measurement value, and when the storage box is closed, acquires the second measurement value to calculate the weight of the storage box, and goes to sleep after a predetermined time has elapsed.

6. a storage device that transmits a first measurement value by a weight sensor when a storage box is opened and transmits a second measurement value including a weight of the storage box when the storage box is closed; a server that calculates the weight of the storage box based on the received first measurement value and the received second measurement value.

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