Measurement device, measurement system, and power supplying method of measurement device

Abstract

To provide a measurement device capable of supplying power of a power source part to a measuring instrument via a main body.SOLUTION: A measurement device includes a measuring instrument for measuring a fluid and a main body to / from which the measuring instrument is attached / detached. The measuring instrument includes a plurality of measurement terminals. The main body includes a plurality of main body terminals to have contact with the measurement terminals by allowing the measuring instrument to be mounted on the main body. The measurement device includes: a power source part for supplying power to the main body terminals; a detection part for detecting the mounting of the measuring instrument on the main body; and a switching part for switching a state from a state where the power source part and at least one of the main body terminals are electrically interrupted into an electrically connected state when the detection part detects the mounting.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present application relates to a measurement device, a measurement system, and a method for powering a measurement device. [Background technology]

[0002] Conventionally, for example, a measuring device includes a measuring meter that measures a fluid, a main body to which the measuring meter is detachably attached, and a power supply unit that supplies power to the measuring meter (for example, Patent Document 1). In the measuring device according to Patent Document 1, power from the power supply unit is supplied to the measuring meter without passing through the main body. However, there is a demand to supply power from the power supply unit to the measuring meter via the main body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-60395 A Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, an object of the present invention is to provide a measuring device, a measuring system, and a power supply method for a measuring device that can supply power from a power supply unit to a measuring meter via a main body. [Means for solving the problem]

[0005] The measuring device is A measuring meter for measuring a fluid; A measuring device comprising: The measuring meter includes a plurality of measuring terminals, the main body includes a plurality of main body terminals that come into contact with the plurality of measurement terminals when the measurement meter is attached to the main body, The measuring device is a power supply unit that supplies power to the plurality of main body terminals; A detection unit that detects attachment of the measuring device to the main body; The device further includes a switching unit that switches, when the detection unit detects the attachment, between the power supply unit and at least one of the plurality of main body terminals from an electrically disconnected state to a connected state.

[0006] The measurement system is The measuring device; A communication device capable of communicating with the measurement device.

[0007] The method of powering the measuring device is as follows: A method for powering a measuring device including a measuring meter for measuring a fluid and a main body to which the measuring meter is detachably attached, comprising the steps of: The measuring meter includes a plurality of measuring terminals, the main body includes a plurality of main body terminals that come into contact with the plurality of measurement terminals when the measurement meter is attached to the main body, The measuring device is a power supply unit that supplies power to the plurality of main body terminals; A detection unit that detects attachment of the measuring device to the main body; a switching unit that switches an electrical connection state between the power supply unit and at least one of the plurality of main body terminals from an electrically disconnected state to an electrically connected state when the detection unit detects the attachment, The power supply method includes mounting the measuring meter on the main body so that the plurality of measuring terminals contact the plurality of main body terminals. [Brief description of the drawings]

[0008] [Figure 1] 1 is a schematic diagram of a measurement system according to an embodiment; [Diagram 2] Schematic diagram of a measuring device according to the embodiment. [Diagram 3] FIG. 2 is a perspective view of a main part of the measuring device according to the embodiment, showing a state in which the measuring meter is detached from the main body. [Figure 4] FIG. 2 is a perspective view of a main part of the measuring device according to the embodiment, seen from below; [Diagram 5] FIG. [Figure 6]FIG. 2 is a side view showing a partial cross section of the measuring device according to the embodiment, illustrating a state in which the measuring meter is detached from the main body. [Figure 7] FIG. 2 is a side view showing a partial cross section of the measurement device according to the embodiment, illustrating a state in which the measurement meter is attached to the main body. [Figure 8] FIG. 2 is a circuit diagram of the measuring device according to the embodiment. [Figure 9] Enlarged view of region IX in Fig. 5 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] In each drawing, the dimensions of the components may be enlarged or reduced relative to the actual dimensions in order to facilitate understanding, and the dimensional ratios between the drawings may not be consistent. Note that in each drawing, some of the components may be omitted in order to facilitate understanding.

[0010] Terms including ordinal numbers such as first, second, etc. are used to describe various components, but these terms are used only for the purpose of distinguishing one component from another, and the components are not particularly limited by these terms. The number of components including ordinal numbers is not particularly limited, and may be, for example, one. In addition, the ordinal numbers used in the following specification and drawings may differ from the ordinal numbers described in the claims.

[0011] Hereinafter, an embodiment of the measurement system and measurement device will be described with reference to Figures 1 to 9. Note that the following embodiment is provided as an example to aid in understanding the configuration of the measurement system and measurement device, and is not intended to limit the configuration of the measurement system and measurement device.

[0012] 1, the measurement system 1 may include, for example, a measurement device 2 that measures a fluid, and a communication device 3 that can communicate with the measurement device 2 by communication means X1. Note that the fluid is not particularly limited, and includes, for example, not only liquid, but also a mixture of liquid and gas, a mixture of liquid and solid, etc.

[0013] In each figure, the first direction D1 is the first horizontal direction D1, the second direction D2 is the second horizontal direction D2 which is a horizontal direction perpendicular to the first horizontal direction D1, and the third direction D3 is the up-down direction D3 which is perpendicular to the horizontal directions D1 and D2.

[0014] Although not particularly limited, the communication device 3 may be, for example, a mobile terminal (for example, a smart device, a tablet computer, a notebook computer, etc.) as in this embodiment. The communication means X1 may be, for example, a wireless communication means such as Wi-Fi or wireless LAN, or may be, for example, a wired communication means such as a communication cable or a wired LAN.

[0015] 1 to 3, the measurement device 2 may include, for example, a plurality of (in this embodiment, three) measuring meters 4 that measure a fluid, and a main body 5 to which each measuring meter 4 is detachably attached. The number of measuring meters 4 is not particularly limited, and may be, for example, one, two, or four or more.

[0016] The measuring meter 4 is not particularly limited as long as it is an instrument that measures values ​​related to the fluid (e.g., characteristic values, state values, etc.). For example, if the measuring meter 4 is a water quality meter that measures values ​​related to water, the measuring meter 4 may be, for example, a turbidity meter, a color meter, a pH meter, a residual chlorine concentration meter, a conductivity meter, a flow meter, a water temperature meter, etc. Note that each of the multiple measuring meters 4 may measure a different value related to the fluid.

[0017] The main body 5 may include, for example, a plurality of main body parts 50 to which the measuring device 4 is detachably attached, and a common part 5a, as in this embodiment. Also, for example, as in this embodiment, the plurality of main body parts 50 may be detachable from each other, and the common part 5a may be detachable from the main body parts 50. Note that the configuration of the main body 5 is not limited to this configuration, and for example, the common part 5a and the plurality of main body parts 50 may be integrally configured so as not to be separated.

[0018] The measuring device 2 may include, for example, as in this embodiment, an inflow section 2a into which the fluid flows, an outflow section 2b from which the fluid flows, and a flow path 2c through which the fluid flows from the inflow section 2a to the outflow section 2b. For example, as in this embodiment, a configuration may be adopted in which the flow path of the measuring device 4 and the flow path of the main body 5 are connected to each other to form the flow path 2c by mounting the measuring device 4 to the main body 5.

[0019] The common unit 5a may include, for example, as in this embodiment, a power supply unit 6 that supplies (feeds) power, a processing unit 7 (for example, a computer including a processor and a memory) that processes data, and a communication unit (not shown) that communicates with the communication device 3. The power supply unit 6 may feed power to each main body unit 50 via a cable 8 or the like, for example, as in this embodiment.

[0020] 3 to 5, for example, the main body 50 may have a main body recess 51 that is open at the top, and the measuring device 4 may have a measurement insertion part 41 at its lower end that is inserted into the main body recess 51. Thus, the measuring device 4 is attached to the main body 50 by inserting the measurement insertion part 41 into the main body recess 51.

[0021] For example, as in this embodiment, the measurement insertion portion 41 may include a tubular measurement connection portion 4a extending in the up-down direction D3, and the main body recess 51 may include a recessed main body connection portion 5b that is inserted into the measurement connection portion 4a. As a result, when the measurement meter 4 is attached to the main body 50, the measurement connection portion 4a and the main body connection portion 5b are connected, and therefore the flow path of the measurement meter 4 and the flow path of the main body 5 are connected (see FIG. 2).

[0022] Also, for example, as in this embodiment, the main body 50 may include a stop portion 54 that stops the measurement insertion portion 41 from above, and the measurement insertion portion 41 may include a concave stop portion 41c (see Figs. 6 and 7) that is stopped by the stop portion 54. As a result, the stop portion 41c is stopped by the stop portion 54, so that the measurement insertion portion 41 is positioned in the main body recess 51 in the up-down direction D3.

[0023] The abutment stop portion 54 may be rotatably connected to the main body recess 51, for example, as in this embodiment. As a result, the abutment stop portion 54 rotates between an abutment stop position where the abutment stop portion 41c of the measurement insertion portion 41 is abutted from above and a release position where the abutment stop is released. Note that the main body 50 may include an abutment stop force application portion 55 that applies an elastic restoring force to the abutment stop portion 54 so that the abutment stop portion 54 is located at the abutment stop position, for example, as in this embodiment. Although not particularly limited, the abutment stop force application portion 55 may be, for example, a spring.

[0024] The main body recess 51 may include, for example, a pair of first clamping portions 51a, 51a that sandwich the measurement insertion portion 41 in the first horizontal direction D1, and a pair of second clamping portions 51b, 51b that sandwich the measurement insertion portion 41 in the second horizontal direction D2, as in this embodiment. Thereby, the measurement insertion portion 41 is positioned in the main body recess 51 in the horizontal directions D1, D2.

[0025] Also, for example, as in this embodiment, the main body recess 51 may be provided with an operating part 56 that is operated, and the operating part 56 may constitute one of the first clamping parts 51a. For example, as in this embodiment, the operating part 56 may be configured to be displaceable between a clamping position (see Figs. 3, 5 and 7) where it abuts against the measurement insertion part 41 and a retracted position (see Fig. 6) where it is separated from the measurement insertion part 41 by being operated.

[0026] The measurement insertion portion 41 may include, for example, a first measurement protrusion 41a protruding in the first horizontal direction D1 and a second measurement protrusion 41b protruding in the second horizontal direction D2 as in this embodiment. The main body recess 51 may include, for example, a first main body protrusion 51c protruding in the first horizontal direction D1 from the first clamping portion 51a as in this embodiment.

[0027] Furthermore, the measuring instrument 4 and the main body 50 may include first and second engagement parts 4b, 4c, 5c, 5d that engage with each other, as in this embodiment. For example, as in this embodiment, the first measurement engagement part 4b may be formed in a convex shape, the first main body engagement part 5c may be formed in a concave shape so as to be inserted into the first measurement engagement part 4b, and the second main body engagement part 5d may be formed in a convex shape, and the second measurement engagement part 4c may be formed in a concave shape so as to be inserted into the second main body engagement part 5d.

[0028] Also, for example, as in this embodiment, the measurement meter 4 may be configured to include a measurement terminal section 9 which is a group of electrical terminals, and the main body section 50 may be configured to include a main body terminal section 10 which is a group of electrical terminals that contact the measurement terminal section 9. In this way, when the measurement meter 4 is attached to the main body section 50, the measurement terminal section 9 and the main body terminal section 10 are electrically connected.

[0029] Also, for example, as in this embodiment, the measurement terminal section 9 may be configured to include a plurality of measurement terminals 11, and the main body terminal section 10 may be configured to include a plurality of main body terminals 12 that contact the measurement terminals 11. The number of measurement terminals 11 and main body terminals 12 is not particularly limited, but is set to seven in this embodiment.

[0030] 5 and 6, the main body 50 may include, for example, a base 52 constituting the upper surface of the main body 50, and a sealing portion 53 fixed to the upper surface of the base 52 and sealing the measurement terminal 11 and the main body terminal 12. The sealing portion 53 may be formed in a ring shape so that the main body terminal 12 is disposed therein, as in this embodiment. The sealing portion 53 may be elastic, for example.

[0031] The main terminal 12 may, for example, as in this embodiment, include a terminal movable part 13 that is movable in the vertical direction D3 relative to the base part 52, a terminal fixing part 14 that is fixed to the base part 52 and holds the terminal movable part 13 in a slidable manner, and a terminal force application part (not shown) that applies an upward elastic restoring force to the terminal movable part 13.

[0032] Next, a method for attaching and detaching the measuring device 4 to and from the main body 50 will be described with reference to Figures 6 and 7. Note that the method for attaching and detaching the measuring device 4 to and from the main body 50 is not limited to the following method.

[0033] When the measuring device 4 is attached to the main body 50, the measurement insertion portion 41 is inserted into the main body recess 51 as shown in Fig. 6. Then, the operating portion 56 is operated to be positioned at the clamping position as shown in Fig. 7. As a result, the operating portion 56 comes into contact with the measurement insertion portion 41, and the measurement insertion portion 41 is clamped by the pair of first clamping portions 51a, 51a.

[0034] Then, the abutment stop portion 54 abuts and stops the abutted portion 41c of the measurement insertion portion 41 from above at the abutment stop position, and the abutment stop force application portion 55 applies an elastic restoring force to the abutment stop portion 54, so that the measurement gauge 4 does not come off the main body portion 50. In this way, the measurement gauge 4 is attached to the main body portion 50.

[0035] Then, the measurement terminal 11 comes into contact with the main body terminal 12. Specifically, the measurement terminal 11 is disposed above the main body terminal 12, and the measurement terminal 11 and the main body terminal 12 come into contact with each other in the up-down direction D3.

[0036] At this time, the terminal movable part 13 of the main terminal 12 is pressed downward by the measurement terminal 11, so that the terminal movable part 13 moves downward relative to the terminal fixed part 14. Then, the terminal force applying part (not shown) applies an upward elastic restoring force to the terminal movable part 13, so that the terminal movable part 13 presses against and comes into contact with the measurement terminal 11. This ensures that the measurement terminal 11 and the main terminal 12 are electrically connected to each other.

[0037] Furthermore, because the base portion 52 of the main body portion 50 and the measuring instrument 4 sandwich the sealing portion 53 in the vertical direction D3, the sealing portion 53 elastically deforms in the vertical direction D3 and is in close contact with the measuring instrument 4. As a result, the sealing portion 53, the base portion 52, and the measuring instrument 4 cooperate to cover the measuring terminals 11 and the main body terminals 12, so that the measuring terminals 11 and the main body terminals 12 are sealed.

[0038] Furthermore, the first measurement projection 41a (see Figs. 3 and 4) and the first main body projection 51c (see Fig. 5) can effectively prevent the measurement insertion portion 41 from being displaced in the first lateral direction D1 relative to the main body recess 51. Note that, for example, as in this embodiment, the protruding height of the first measurement projection 41a may be increased toward the top, and the protruding height of the first main body projection 51c may be increased toward the bottom.

[0039] In addition, the second measurement protrusion 41b (see Figs. 3 and 4) can effectively prevent the measurement insertion portion 41 from being misaligned in the second lateral direction D2 with respect to the main body recess 51. Note that, for example, as in this embodiment, the protruding height of the second measurement protrusion 41b may be configured to increase toward the top.

[0040] Conversely, when the measuring instrument 4 is to be detached from the main body 50, the operating unit 56 is operated to position the operating unit 56 in the retracted position as shown in Fig. 6. This causes the operating unit 56 to move away from the measuring insertion portion 41. Then, the measuring insertion portion 41 is pulled out of the main body recess 51, and the measuring instrument 4 is detached from the main body 50.

[0041] Next, the configurations of the measurement terminal unit 9 and the main body terminal unit 10 and the method of feeding power to the measurement device 2 (specifically, the method of feeding power to the measurement meter 4) will be described with reference to Figures 8 and 9. Note that the configurations of the measurement terminal unit 9 and the main body terminal unit 10 are not limited to the following configurations, and the method of feeding power to the measurement device 2 is not limited to the following method.

[0042] 8, for example, the power supply unit 6 is a DC power supply 6. The DC power supply 6 may be configured to include a first polarity unit 6d having a first polarity (for example, positive) and a second polarity unit 6e having a second polarity (for example, negative) different from the first polarity.

[0043] Measuring device 4 may include, for example, a measuring circuit unit 42 for measuring the fluid. Measuring circuit unit 42 may include, for example, a power supply circuit unit 42a that serves as the main power supply for measuring device 4, and a control circuit unit 42b that serves as a control power supply for measuring device 4 (for example, a power supply for an electrical signal indicating a measured value, a control signal for controlling each part of measuring device 4, etc.) as in this embodiment.

[0044] The main body terminals 12 may include, for example, a plurality of first main body terminals 12a-12d electrically connected to the first polarity portion 6d, and a plurality of second main body terminals 12e-12g electrically connected to the second polarity portion 6e, as in this embodiment. The number of each main body terminal 12 is not particularly limited, but for example, in this embodiment, the number of the first main body terminals 12a-12d is four, and the number of the second main body terminals 12e-12g is three.

[0045] Furthermore, as in this embodiment, the measuring device 2 may include a detection unit 15 that detects attachment of the measuring meter 4 to the main body 5, and a switching unit 16 that switches between an electrically disconnected state and a connected state between the power supply unit 6 and the main body terminal unit 10 based on detection by the detection unit 15. The detection unit 15 may detect attachment of the measuring meter 4 to the main body 5, for example, by detecting contact between the measuring terminal 11 of the measuring terminal unit 9 and the main body terminal 12 of the main body terminal unit 10.

[0046] The first body terminals 12a-12d may, for example, as in this embodiment, include a first body detection terminal 12a electrically connected to the first polarity section 6d without via the switching section 16, and first body switching terminals 12b-12d electrically connected to the first polarity section 6d via the switching section 16. The number of first body switching terminals 12b-12d is not particularly limited, but is, for example, three in this embodiment.

[0047] The second body terminals 12e-12g may, for example, as in this embodiment, include a second body detection terminal 12e electrically connected to the second polarity section 6e without via the switching section 16, and second body switching terminals 12f-12g electrically connected to the second polarity section 6e without via the switching section 16. The number of second body switching terminals 12f-12g is not particularly limited, but is, for example, two in this embodiment.

[0048] The measurement terminal 11 may, for example, as in this embodiment, include a first measurement detection terminal 11a in contact with the first body detection terminal 12a, first measurement switching terminals 11b to 11d in contact with the first body switching terminals 12b to 12d, a second measurement detection terminal 11e in contact with the second body detection terminal 12e, and second measurement switching terminals 11f to 11g in contact with the second body switching terminals 12f to 12g.

[0049] The detection unit 15 may, for example, as in this embodiment, include a detection circuit unit 15a that creates a closed circuit between the first body detection terminal 12a and the second body detection terminal 12e by contacting the first body detection terminal 12a with the first measurement detection terminal 11a and by contacting the second body detection terminal 12e with the second measurement detection terminal 11e, and a current detection unit 15b that detects the current flowing in the detection circuit unit 15a.

[0050] For example, as in this embodiment, when the current detection unit 15b does not detect a current flowing through the detection circuit unit 15a, the switching unit 16 electrically disconnects the power supply unit 6 and the first body switching terminals 12b to 12d, and when the current detection unit 15b detects a current flowing through the detection circuit unit 15a, the switching unit 16 electrically connects the power supply unit 6 and the first body switching terminals 12b to 12d.

[0051] As a result, when the measuring meter 4 is attached to the main body 50, the first body detection terminal 12a and the first measurement detection terminal 11a come into contact, and the second body detection terminal 12e and the second measurement detection terminal 11e come into contact. Therefore, the detection circuit section 15a closes a circuit between the first and second body detection terminals 12a and 12e, causing a current to flow through the detection circuit section 15a.

[0052] Then, since the current detection unit 15b detects that a current flows through the detection circuit unit 15a, the state between the power supply unit 6 and the first body switching terminals 12b-12d is switched from an electrically disconnected state to a connected state. As a result, the measurement switching terminals 11b-11d, 11f-11g are in contact with the body switching terminals 12b-12d, 12f-12g, so that the first and second body switching terminals 12b-12d, 12f-12g are closed through the measurement circuit unit 42.

[0053] Therefore, the power supply unit 6 switches from a state in which it stops supplying power to the measurement circuit unit 42 of the measurement meter 4 to a state in which it supplies power to the measurement circuit unit 42 of the measurement meter 4, and power from the power supply unit 6 is supplied to the measurement meter 4. That is, the voltage applied between the first and second main body switching terminals 12b-12d, 12f-12g is applied to the measurement circuit unit 42. Note that the first and second main body detection terminals 12a, 12e are also referred to as the first and second current detection terminals 12a, 12e, as they are terminals for passing a current detected by the detection unit 15.

[0054] The configurations of the detection unit 15 and the switching unit 16 are not particularly limited. The detection unit 15 and the switching unit 16 may be composed of, for example, hard electrical components (for example, a timer, various relays, and a photocoupler), or may be composed of, for example, soft electrical components (soft sequencers), or may be composed of, for example, hard electrical components and soft electrical components.

[0055] 9, the main body terminals 12a-12g may be arranged in a line along the second horizontal direction D2. Specifically, for example, as in this embodiment, the first main body terminals 12a-12d may be arranged in a line along the horizontal direction D2, and the second main body terminals 12e-12f may be arranged in a line along the second horizontal direction D2 so as to be adjacent to the first main body terminals 12a-12d and in a line with the first main body terminals 12a-12d.

[0056] For example, as in this embodiment, among the first body terminals 12a-12d, the first body terminal 12a closest to the second body terminals 12e-12g may be the first body detection terminal 12a. Also, for example, as in this embodiment, among the second body terminals 12e-12g, the second body terminal 12e closest to the first body terminals 12a-12d may be the second body detection terminal 12e.

[0057] Furthermore, the main body 50 may include, for example, a first holding portion 57 fixed to the base 52 and holding the first main body terminals 12a-12d, and a second holding portion 58 fixed to the base 52 and holding the second main body terminals 12e-12g. The first holding portion 57 and the second holding portion 58 may hold lower portions of the main body terminals 12 extending in the up-down direction D3, as in this embodiment. As a result, the main body terminals 12 protrude upward from the holding portions 57, 58.

[0058] For example, as in this embodiment, the base portion 52 may be provided with first to third through holes 52a to 52c penetrating in the up-down direction D3 inside the sealing portion 53. This allows the fluid that has entered inside the sealing portion 53 to be discharged by the through holes 52a to 52c, thereby preventing the fluid from accumulating inside the sealing portion 53.

[0059] Moreover, for example, as in this embodiment, the first holding portion 57 and the second holding portion 58 may be separated from each other, and the first through hole 52a may be disposed between the first holding portion 57 and the second holding portion 58. This allows the fluid between the first and second holding portions 57, 58 to flow through the first through hole 52a, so that the fluid can be prevented from accumulating between the first and second holding portions 57, 58.

[0060] Furthermore, for example, as in this embodiment, each of the holding portions 57, 58 may protrude upward from the base portion 52. As a result, since the space between the first and second holding portions 57, 58 is recessed, even if a fluid accumulates inside the sealing portion 53, the fluid can be prevented from accumulating between the first and second holding portions 57, 58.

[0061] Also, for example, as in this embodiment, the holding portions 57, 58 may hold the main body terminals 12 away from the base portion 52. As a result, since the holding portions 57, 58 protrude upward from the base portion 52, even if a fluid accumulates inside the sealing portion 53, the fluid can be prevented from accumulating between the holding portions 57, 58 and the base portion 52. Therefore, the fluid can be prevented from accumulating between the base portion 52 and the main body terminals 12.

[0062] In this way, it is possible to effectively prevent the fluid from staying between the first and second main body terminals 12a-12d, 12e-12g. However, for example, even when the measuring meter 4 is not attached to the main body 50, if a large amount of fluid stays inside the sealing portion 53, the first and second main body detection terminals 12a, 12e may be electrically connected by the fluid.

[0063] In such a case, a current flows between the first and second body detection terminals 12a, 12e. Note that since the voltage applied between the first and second body detection terminals 12a, 12e is a DC voltage, the current does not flow continuously even if it flows momentarily (for example, for a few microseconds). This is because in the case of a DC voltage, an electric double layer is created and the fluid functions like a capacitor.

[0064] Therefore, for example, as in this embodiment, when the current detection unit 15b detects the current flowing through the detection circuit unit 15a for a set time, the switching unit 16 may switch the state between the power supply unit 6 and the first body switching terminals 12b to 12d from an electrically disconnected state to a connected state. This makes it possible to prevent the voltage of the power supply unit 6 from being erroneously applied between the first and second body switching terminals 12b to 12d, 12f to 12g.

[0065] Conversely, when the current detection unit 15b detects that no current flows through the detection circuit unit 15a for a set time, the switching unit 16 may switch the state between the power supply unit 6 and the first body switching terminals 12b to 12d from an electrically connected state to an electrically disconnected state. This makes it possible to prevent the voltage of the power supply unit 6 from being erroneously applied between the first and second body switching terminals 12b to 12d, 12f to 12g.

[0066] Although not particularly limited, the set time may be, for example, 100 mSec or more, and is preferably, for example, 200 mSec or more. In order to smoothly supply power to the measuring device 4 after the measuring device 4 is attached to the main body 5, the set time may be, for example, 1000 mSec or less, and is preferably, for example, 500 mSec or less.

[0067] As described above, the measurement device 2 in this embodiment has the following features: A measuring instrument 4 for measuring a fluid; A measuring device (2) comprising: a main body (5) to which the measuring meter (4) is detachably attached; The measuring meter 4 includes a plurality of measuring terminals 11, The main body 5 includes a plurality of main body terminals 12 that come into contact with the plurality of measurement terminals 11 when the measuring meter 4 is attached to the main body 5, The measuring device 2 is A power supply unit 6 that supplies power to the plurality of main body terminals 12; A detection unit 15 that detects the attachment of the measuring instrument 4 to the main body 5; and a switching unit 16 that switches between the power supply unit 6 and at least one of the plurality of main body terminals 12 (in this embodiment, the first main body switching terminals 12b to 12d) from an electrically disconnected state to a connected state when the detection unit 15 detects the attachment. This configuration is preferred.

[0068] With this configuration, when the measuring meter 4 is attached to the main body 5, the multiple main body terminals 12 come into contact with the multiple measurement terminals 11, and the detection unit 15 detects that the measuring meter 4 has been attached to the main body 5. When the detection unit 15 detects this attachment, the state between the power supply unit 6 and at least one of the multiple main body terminals 12 (in this embodiment, the first main body switching terminals 12b to 12d) is switched from an electrically disconnected state to a connected state. This allows power from the power supply unit 6 to be supplied to the measuring meter 4 via the main body 5.

[0069] In addition, in the measurement device 2, as in this embodiment, The detection unit 15 detects contact between the measurement terminal 11 and the main body terminal 12, When the detection unit 15 detects the contact, the switching unit 16 switches the state between the power supply unit 6 and at least one of the plurality of main body terminals 12 (in this embodiment, the first main body switching terminals 12b to 12d) from an electrically disconnected state to a connected state. This configuration is preferred.

[0070] With this configuration, when the detection unit 15 detects contact between the measurement terminal 11 and the main body terminal 12, the state between the power supply unit 6 and at least one of the main body terminals 12 (in this embodiment, the first main body switching terminals 12b to 12d) is switched from an electrically disconnected state to a connected state. This allows power from the power supply unit 6 to be supplied to the measurement meter 4 via the main body 5 after the measurement terminal 11 and the main body terminal 12 come into contact.

[0071] In addition, in the measurement device 2, as in this embodiment, The plurality of main body terminals 12 are A first main body detection terminal 12a, a second body detection terminal 12e to which the voltage of the power supply unit 6 is applied between the first body detection terminal 12a and the second body detection terminal 12e; At least one main body switching terminal 12b to 12d connected to the power supply unit 6 via the switching unit 16, The measuring instrument 4 is a first measurement detection terminal 11a in contact with the first main body detection terminal 12a; a second measurement detection terminal 11e in contact with the second main body detection terminal 12e; At least one measurement switching terminal 11b to 11d in contact with the at least one body switching terminal 12b to 12d, The detection unit 15 is a detection circuit section 15a that closes a circuit between the first body detection terminal 12a and the second body detection terminal 12e by bringing the first body detection terminal 12a into contact with the first measurement detection terminal 11a and bringing the second body detection terminal 12e into contact with the second measurement detection terminal 11e; a current detection unit (15b) for detecting a current flowing through the detection circuit unit (15a); When the current detection unit 15b detects the current, the switching unit 16 switches between the power supply unit 6 and the at least one of the main body switching terminals 12b to 12d from an electrically disconnected state to a connected state. This configuration is preferred.

[0072] With this configuration, when the measuring meter 4 is attached to the main body 5, the first body detection terminal 12a comes into contact with the first measurement detection terminal 11a, and the second body detection terminal 12e comes into contact with the second measurement detection terminal 11e. As a result, the detection circuit section 15a closes a circuit between the first body detection terminal 12a and the second body detection terminal 12e.

[0073] And, since the voltage of the power supply unit 6 is applied between the first body detection terminal 12a and the second body detection terminal 12e, a current flows through the detection circuit unit 15a. Therefore, in order for the current detection unit 15b to detect the current flowing through the detection circuit unit 15a, the state between the power supply unit 6 and at least one of the body switching terminals 12b to 12d is switched from an electrically disconnected state to a connected state.

[0074] In addition, in the measurement device 2, as in this embodiment, The power supply unit 6 is a DC power supply 6 having a first polarity portion 6d having a first polarity and a second polarity portion 6e having a second polarity different from the first polarity, The first body detection terminal 12a is electrically connected to the first polarity portion 6d, The second body detection terminal 12e is electrically connected to the second polarity portion 6e, When the current detection unit 15b detects the current for a set time, the switching unit 16 switches between the power supply unit 6 and the at least one main body switching terminal 12b to 12d from an electrically disconnected state to a connected state. This configuration is preferred.

[0075] The first body detection terminal 12a is electrically connected to the first polarity portion 6d of the DC power supply 6, and the second body detection terminal 12e is electrically connected to the second polarity portion 6e of the DC power supply 6. As a result, if the first and second body detection terminals 12a, 12e are electrically connected by a fluid, a current will flow between the first and second body detection terminals 12a, 12e instantaneously, but will not flow continuously.

[0076] On the other hand, when the current detection unit 15b detects a current for a set time, the state between the power supply unit 6 and at least one of the main body switching terminals 12b to 12d is switched from an electrically disconnected state to a connected state, thereby making it possible to prevent the power supply unit 6 from being erroneously electrically connected to the main body switching terminals 12b to 12d.

[0077] In addition, in the measurement device 2, as in this embodiment, The power supply unit 6 is a DC power supply 6 having a first polarity portion 6d having a first polarity and a second polarity portion 6e having a second polarity different from the first polarity, The plurality of main body terminals 12 are a plurality of first main body terminals 12a to 12d electrically connected to the first polarity portion 6d; a plurality of second body terminals 12e to 12g electrically connected to the second polarity portion 6e, The main body 5 is A base portion 52; a first holding portion 57 fixed to the base portion 52 and holding the first main terminals 12a to 12d apart from the base portion 52; a second holding portion 58 fixed to the base portion 52 and holding the second main terminals 12e to 12g apart from the base portion 52; Each of the first holding portion 57 and the second holding portion 58 protrudes upward from the base portion 52. This configuration is preferred.

[0078] According to this configuration, since the first holding portion 57 and the second holding portion 58 each protrude upward from the base portion 52, it is possible to prevent fluid from accumulating between the holding portions 57, 58 and the base portion 52. This makes it possible to prevent fluid from accumulating between the first and second main terminals 12a to 12d, 12e to 12g via the base portion 52.

[0079] In addition, in the measurement device 2, as in this embodiment, The first holding portion 57 is separated from the second holding portion 58 so that a space between the first holding portion 57 and the second holding portion 58 is recessed. This configuration is preferred.

[0080] According to this configuration, since the first holding portion 57 is separated from the second holding portion 58, there is a recess between the first holding portion 57 and the second holding portion 58. This makes it possible to prevent the fluid from accumulating between the first and second holding portions 57, 58. Therefore, it is possible to prevent the fluid from accumulating between the first and second main terminals 12a to 12d, 12e to 12g.

[0081] In addition, in the measurement device 2, as in this embodiment, The power supply unit 6 is a DC power supply 6 having a first polarity portion 6d having a first polarity and a second polarity portion 6e having a second polarity different from the first polarity, The plurality of main body terminals 12 are a plurality of first main body terminals 12a to 12d electrically connected to the first polarity portion 6d; a plurality of second body terminals 12e to 12g electrically connected to the second polarity portion 6e, The main body 5 is a first holding portion 57 that holds the first main terminals 12a to 12d; a second holding portion 58 that holds the plurality of second main terminals 12e to 12g and is separated from the first holding portion 57; A through hole 52a is provided between the first holding portion 57 and the second holding portion 58, the through hole 52a penetrating in the vertical direction D3. This configuration is preferred.

[0082] According to this configuration, the first holding portion 57 is separated from the second holding portion 58, and the through hole 52a penetrates in the up-down direction D3 between the first and second holding portions 57, 58. This allows the fluid between the first and second holding portions 57, 58 to flow through the through hole 52a, making it possible to prevent the fluid from accumulating between the first and second holding portions 57, 58. This makes it possible to prevent the fluid from accumulating between the first and second main terminals 12a to 12d, 12e to 12g.

[0083] In addition, the measurement system 1, as in this embodiment, The measuring device 2, A communication device 3 capable of communicating with the measurement device 2. This configuration is preferred.

[0084] With this configuration, power from the power supply unit 6 can be supplied to the measurement meter 4 via the main body 5.

[0085] In addition, the power supply method of the measuring device 2 is as follows, as in this embodiment: A method for supplying power to a measuring device (2) including a measuring meter (4) for measuring a fluid and a main body (5) to which the measuring meter (4) is detachably attached, comprising the steps of: The measuring meter 4 includes a plurality of measuring terminals 11, The main body 5 includes a plurality of main body terminals 12 that come into contact with the plurality of measurement terminals 11 when the measuring meter 4 is attached to the main body 5, The measuring device 2 is A power supply unit 6 that supplies power to the plurality of main body terminals 12; A detection unit 15 that detects the attachment of the measuring instrument 4 to the main body 5; a switching unit 16 that switches between the power supply unit 6 and at least one of the plurality of main body terminals 12 (in this embodiment, first main body switching terminals 12b to 12d) from an electrically disconnected state to a connected state when the detection unit 15 detects the attachment, The power supply method includes mounting the measuring device 4 on the main body 5 so that the plurality of measuring terminals 11 and the plurality of main body terminals 12 are in contact with each other; This method is also acceptable.

[0086] According to this method, power from power supply unit 6 can be supplied to measurement meter 4 via main body 5.

[0087] The measurement system 1, the measurement device 2, and the power supply method of the measurement device 2 are not limited to the configurations of the above-mentioned embodiments, and are not limited to the above-mentioned effects. Of course, the measurement system 1, the measurement device 2, and the power supply method of the measurement device 2 can be modified in various ways without departing from the gist of the present invention. For example, it is of course possible to arbitrarily select one or more of the configurations and methods according to the various modified examples described below and adopt them in the configurations and methods according to the above-mentioned embodiments.

[0088] (A) In the measuring device 2 according to the above embodiment, the detecting unit 15 includes a current detecting unit 15b that detects a current flowing through the detecting circuit unit 15a, and the switching unit 16 switches the state between the power supply unit 6 and at least one of the plurality of main body terminals 12, 12b-12d, from an electrically disconnected state to a connected state when the current detecting unit 15b detects a current. That is, the detecting unit 15 detects the attachment of the measuring meter 4 to the main body 5 by detecting the contact between the measuring terminal 11 and the main body terminal 12. However, the measuring device 2 is not limited to this configuration.

[0089] For example, the detection unit 15 may be configured to include a sensor (e.g., a photoelectric sensor, a proximity sensor, a contact sensor, etc.) that detects the movement of the terminal movable part 13, and the switching unit 16 may be configured to switch the state between the power supply unit 6 and at least one of the multiple main body terminals 12b to 12d from an electrically disconnected state to a connected state when the sensor detects the movement of the terminal movable part 13. In this way, the detection unit 15 can detect the attachment of the measuring meter 4 to the main body 5 by detecting the contact between the measurement terminal 11 and the main body terminal 12.

[0090] Also, for example, detection unit 15 may include a protrusion protruding downward from measuring device 4, a switch disposed on main body 5 and pressed by the protrusion, and a sensor (e.g., a pressure sensor, a proximity sensor, etc.) that detects that the switch is pressed, and switching unit 16 may switch between power supply unit 6 and at least one of the main body terminals 12b-12d from an electrically disconnected state to a connected state when the sensor detects that the switch has been pressed. In this way, detection unit 15 can detect that measuring device 4 is attached to main body 5.

[0091] (B) In the measuring device 2 according to the above embodiment, the power supply unit 6 is a DC power supply 6 having a first polarity portion 6d and a second polarity portion 6e. However, the measuring device 2 is not limited to this configuration. For example, the power supply unit 6 may be an AC power supply.

[0092] (C) In the measuring device 2 according to the above embodiment, the switching unit 16 is configured to switch the state between the power supply unit 6 and the main body switching terminals 12b-12d, 12f-12g from an electrically disconnected state to a connected state when the current detection unit 15b detects a current flowing through the detection circuit unit 15a for a set time. However, the measuring device 2 is not limited to this configuration.

[0093] For example, the switching unit 16 may be configured to switch the state between the power supply unit 6 and at least one of the multiple main body terminals 12b to 12d from an electrically disconnected state to a connected state immediately when the current detection unit 15b detects a current flowing through the detection circuit unit 15a.

[0094] (D) In ​​the measuring device 2 according to the above embodiment, each of the holding parts 57, 58 is configured to hold the multiple body terminals 12a-12d, 12e-12g away from the base part 52. However, the measuring device 2 is not limited to this configuration. For example, at least one of the first and second holding parts 57, 58 may be configured to hold the multiple body terminals 12a-12d, 12e-12g in contact with the base part 52.

[0095] (E) In the measuring device 2 according to the above embodiment, each of the holding parts 57, 58 is configured to protrude upward from the base part 52. However, the measuring device 2 is not limited to such a configuration. At least one of the first and second holding parts 57, 58 may be configured, for example, to be recessed downward from the base part 52, or may be configured, for example, to be at the same height as the base part 52 (the same position in the up-down direction D3).

[0096] (F) In addition, in the measuring device 2 according to the above embodiment, the first holding part 57 is configured to be separated from the second holding part 58. However, the measuring device 2 is not limited to such a configuration. For example, the first holding part 57 may be configured to be in contact with the second holding part 58.

[0097] (G) Furthermore, in the measuring device 2 according to the above embodiment, the main body 5 is configured to include a through hole 52a that penetrates in the up-down direction D3 inside the sealing portion 53 and between the first holding portion 57 and the second holding portion 58. However, the measuring device 2 is not limited to this configuration.

[0098] For example, the main body 5 may not have through holes 52a-52c penetrating in the up-down direction D3 inside the sealing portion 53. Also, for example, the main body 5 may have through holes penetrating in the up-down direction D3 only inside the sealing portion 53 and at positions away from between the first holding portion 57 and the second holding portion 58.

[0099] (H) In addition, in the measuring device 2 according to the above embodiment, the measuring terminal 11 is disposed above the main body terminal 12, and the measuring terminal 11 and the main body terminal 12 are in contact with each other in the up-down direction D3. However, the measuring device 2 is not limited to this configuration. For example, the measuring terminal 11 and the main body terminal 12 may be in contact with each other in the lateral directions D1 and D2.

[0100] (I) In the measuring device 2 according to the above embodiment, the first body terminals 12a-12d are arranged in a line along the second horizontal direction D2, and the second body terminals 12e-12f are arranged in a line along the second horizontal direction D2 so as to be adjacent to the first body terminals 12a-12d and in a line with the first body terminals 12a-12d. However, the measuring device 2 is not limited to this configuration.

[0101] For example, the first body terminals 12a-12d may be arranged in a line along the second horizontal direction D2, and the second body terminals 12e-12f may be arranged in a line along the second horizontal direction D2, spaced apart from the first body terminals 12a-12d in the first horizontal direction D1. Also, the first body terminals 12a-12d may be arranged in a ring shape, and the second body terminals 12e-12f may be arranged in a ring shape.

[0102] (J) In addition, in the measuring device 2 according to the above embodiment, among the multiple first body terminals 12a-12d, the first body terminal 12a closest to the multiple second body terminals 12e-12g is the first body detection terminal 12a. However, the measuring device 2 is not limited to such a configuration. For example, among the multiple first body terminals 12a-12d, the first body terminal 12b (12c, 12d) closest to the multiple second body terminals 12e-12g may be the first body detection terminal 12b (12c, 12d).

[0103] (K) In addition, in the measuring device 2 according to the above embodiment, among the second body terminals 12e-12g, the second body terminal 12e closest to the first body terminals 12a-12d is the second body detection terminal 12e. However, the measuring device 2 is not limited to such a configuration. For example, among the second body terminals 12e-12g, the second body terminal 12f (12g) closest to the first body terminals 12a-12d may be the second body detection terminal 12f (12g).

[0104] Thus, for example, in the measurement device 2, The first main terminals 12a to 12d are arranged in a row along the horizontal direction D2, The second body terminals 12e to 12f are arranged in a line along the horizontal direction D2 so as to be adjacent to and in a line with the first body terminals 12a to 12d, Among the first body terminals 12a to 12d, the first body terminal 12b (12c, 12d) closest to the second body terminals 12e to 12g is the first body switching terminal 12b (12c, 12d), Of the plurality of second body terminals 12e to 12g, the second body terminal 12f (12g) closest to the plurality of first body terminals 12a to 12d may be the second body switching terminal 12f (12g).

[0105] According to this configuration, at least the first body switching terminal 12b (12c, 12d) and the second body switching terminal 12f (12g) are disposed between the first body detection terminal 12a and the second body detection terminal 12e. As a result, the first body detection terminal 12a and the second body detection terminal 12e are separated from each other, so that it is possible to prevent, for example, the first body detection terminal 12a and the second body detection terminal 12e from being unnecessarily electrically connected to each other by a fluid, a conductive material, or the like.

[0106] (L) Furthermore, in the measurement device 2 according to the above embodiment, when the detection unit 15 detects that the measuring device 4 is attached to the main body 5, the switching unit 16 switches between the power supply unit 6 and some of the main body terminals 12 (specifically, all of the first main body switching terminals 12b to 12d among the main body terminals 12) from an electrically disconnected state to a connected state. However, the measurement device 2 is not limited to this configuration.

[0107] For example, when detection unit 15 detects that measurement meter 4 is attached to main body 5, switching unit 16 may be configured to switch from an electrically disconnected state between power supply unit 6 and all of the main body terminals 12 to a connected state. Also, for example, when detection unit 15 detects that measurement meter 4 is attached to main body 5, switching unit 16 may be configured to switch from an electrically disconnected state between power supply unit 6 and all of the main body switching terminals 12b-12d, 12f-12g among the main body terminals 12 to a connected state.

[0108] (M) For example, the order of execution of each process, such as operations, procedures, steps, and stages, in the methods and devices shown in the claims, specifications, and drawings, can be arbitrary, as long as the result of a previous process is not used in a subsequent process. For example, even if the description uses "first," "next," etc. for convenience, it does not mean that the processes must be executed in this order. [Explanation of symbols]

[0109] 1...measurement system, 2...measurement device, 2a...inlet section, 2b...outlet section, 2c...flow path, 3...communication device, 4...measurement meter, 4a...measurement connection section, 4b...first measurement engagement section, 4c...second measurement engagement section, 5...main body, 5a...common section, 5b...main body connection section, 5c...first main body engagement section, 5d...second main body engagement section, 6...power supply section (DC power supply), 6d...first polarity section, 6e...second polarity section, 7...processing section, 8... Cable, 9... measurement terminal section, 10... main body terminal section, 11... measurement terminal, 11a... first measurement detection terminal, 11b, 11c, 11d... first measurement switching terminal, 11e... second measurement detection terminal, 11f, 11g... second measurement switching terminal, 12... main body terminal, 12a... first main body detection terminal (first main body terminal), 12b, 12c, 12d... first main body switching terminal (first main body terminal), 12e... second main body detection Output terminal (second main body terminal), 12f, 12g... second main body switching terminal (second main body terminal), 13... terminal movable part, 14... terminal fixed part, 15... detection part, 15a... detection circuit part, 15b... current detection part, 16... switching part, 41... measurement insertion part, 41a... first measurement protrusion, 41b... second measurement protrusion, 41c... abutment part, 42... measurement circuit part, 42a... power supply circuit part, 42b... control circuit part, 50... Main body portion, 51...main body recess, 51a...first clamping portion, 51b...second clamping portion, 51c...first main body protrusion, 52...base portion, 52a...first through hole, 52b...second through hole, 52c...third through hole, 53...sealing portion, 54...contact stop portion, 55...contact stop force applying portion, 56...operation portion, 57...first holding portion, 58...second holding portion, D1...first horizontal direction, D2...second horizontal direction, D3...vertical direction, X1...communication means

Claims

1. A measuring instrument for measuring fluids, A measuring device comprising a main body from which the aforementioned measuring instrument is attached and detached, The measuring instrument is equipped with multiple measuring terminals, The main body is provided with a plurality of main body terminals that come into contact with the plurality of measuring terminals when the measuring instrument is mounted on the main body, The measuring device is, A power supply unit that supplies power to the aforementioned multiple main unit terminals, A detection unit for detecting the attachment of the measuring instrument to the main body, A measuring device comprising: a switching unit that, when the detection unit detects the attachment, switches the state between the power supply unit and at least one of the plurality of main unit terminals from a state of electrically disconnection to a state of connection.

2. The aforementioned multiple main unit terminals are, First main unit detection terminal, A second main unit detection terminal is provided between the first main unit detection terminal and the second main unit detection terminal, to which the voltage of the power supply unit is applied. It includes at least one main unit switching terminal connected to the power supply unit via the switching unit, The aforementioned measuring instrument is A first measurement detection terminal that contacts the first main unit detection terminal, A second measurement detection terminal that contacts the second main unit detection terminal, It comprises at least one measurement switching terminal that contacts the at least one main unit switching terminal, The detection unit is A detection circuit unit that forms a closed circuit between the first main unit detection terminal and the second main unit detection terminal by the first main unit detection terminal and the first measurement detection terminal making contact and the second main unit detection terminal making contact, The system includes a current detection unit that detects the current flowing through the detection circuit, The measuring device according to claim 1, wherein the switching unit switches the state between the power supply unit and the at least one main unit switching terminal from an electrically disconnected state to an electrically connected state when the current detection unit detects the current.

3. The power supply unit is a DC power supply having a first polarity section having a first polarity and a second polarity section having a second polarity different from the first polarity. The first main unit detection terminal is electrically connected to the first polarity unit, The second main unit detection terminal is electrically connected to the second polarity section. The measuring device according to claim 2, wherein the switching unit switches the state between the power supply unit and the at least one main unit switching terminal from an electrically disconnected state to an electrically connected state when the current detection unit detects the current for a set time.

4. The power supply unit is a DC power supply having a first polarity section having a first polarity and a second polarity section having a second polarity different from the first polarity. The aforementioned multiple main unit terminals are, Multiple first main body terminals electrically connected to the first polarity portion, It includes a plurality of second body terminals electrically connected to the second polarity portion, The aforementioned main body is The base part, A first holding part fixed to the base part and holding the plurality of first main body terminals away from the base part, It comprises a second holding portion fixed to the base portion and holding the plurality of second main body terminals away from the base portion, The measuring device according to claim 1, wherein each of the first holding portion and the second holding portion protrudes upward from the base portion.

5. The measuring device according to claim 4, wherein the first holding portion is separated from the second holding portion so as to create a recess between it and the second holding portion.

6. The power supply unit is a DC power supply having a first polarity section having a first polarity and a second polarity section having a second polarity different from the first polarity. The aforementioned multiple main unit terminals are, Multiple first main body terminals electrically connected to the first polarity portion, It includes a plurality of second body terminals electrically connected to the second polarity portion, The aforementioned main body is The first holding part that holds the plurality of first main body terminals, A second holding portion that holds the plurality of second main body terminals and is separated from the first holding portion, The measuring device according to claim 1, further comprising a through hole that penetrates vertically between the first holding portion and the second holding portion.

7. A measuring device according to any one of claims 1 to 6, A measurement system comprising a communication device capable of communicating with the aforementioned measuring device.

8. A method for supplying power to a measuring device comprising a measuring instrument for measuring fluid and a main body to which the measuring instrument is attached and detached, The measuring instrument is equipped with multiple measuring terminals, The main body is provided with a plurality of main body terminals that come into contact with the plurality of measuring terminals when the measuring instrument is mounted on the main body, The measuring device is, A power supply unit that supplies power to the aforementioned multiple main unit terminals, A detection unit for detecting the attachment of the measuring instrument to the main body, The system includes a switching unit that, when the detection unit detects the installation, switches the state between the power supply unit and at least one of the plurality of main unit terminals from an electrically disconnected state to an electrically connected state, The power supply method includes mounting the measuring instrument on the main body such that the plurality of measuring terminals and the plurality of main body terminals are in contact, and is a power supply method for a measuring device.

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