Detection device and detection system

Abstract

To improve maintainability.SOLUTION: A detection device is provided in a distribution valve (10) that sends a supply by operating a piston (12). The detection device comprises a detection unit (21) that detects the operation of an indicator pin (13) that is linked to the piston (12), and a transmission unit (22) that wirelessly transmits information indicative of a detection result of the detection unit (21). It is preferable that a housing (21a) of the detection unit (21) and a housing (22a) of the transmission unit (22) are separate entities, and that the detection unit (21) and the transmission unit (22) are connected by wire.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to detection devices and systems. [Background technology]

[0002] Patent Document 1 discloses a microswitch for detecting an indicator pin that is linked to a piston of a distributing valve. The microswitch has terminals. Wires are connected to the terminals. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-149560 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when information indicating the detection result of the microswitch is transmitted by wire through the wiring, if the wiring is routed through the same wiring duct as the wiring of other devices in the facility, multiple wirings will be mixed in the wiring duct, making it difficult to identify which of the multiple wirings is the wiring of the microswitch, and maintainability may decrease. Also, when multiple distribution valves are provided and one of the multiple distribution valves malfunctions, multiple wirings extending from the multiple distribution valves will be mixed, making it difficult to identify which of the multiple wirings is the wiring of the malfunctioning distribution valve, and maintainability may decrease.

[0005] An object of the present disclosure is to provide a detection device and a detection system that can improve maintainability. [Means for solving the problem]

[0006] The detection device of the first aspect is provided in a distribution valve (10) that delivers a supply by operating a piston (12). The detection device includes a detection unit (21) that detects the operation of an indicator pin (13) that is linked to the piston (12), and a transmission unit (22) that wirelessly transmits information indicative of the detection result of the detection unit (21).

[0007] In the first aspect, the ease of maintenance can be improved.

[0008] In the second aspect, in the first aspect, the housing (21a) of the detection unit (21) and the housing (22a) of the transmission unit (22) are separate, and the detection unit (21) and the transmission unit (22) are connected by wire.

[0009] In the second aspect, it is possible to improve the degree of freedom in the locations where the detection unit (21) and the transmission unit (22) are installed.

[0010] In a third aspect, in the first or second aspect, the detection device includes a support portion (23) that covers the indicator pin (13) and supports the detection portion (21), and the support portion (23) is transparent.

[0011] In the third aspect, it is possible to easily visually check from outside the support portion (23) whether the indicator pin (13) is operating or not.

[0012] In the fourth aspect, in the third aspect, the support portion (23) has a cylindrical shape with openings (23a, 23b) at both ends, the indicator pin (13) is arranged in the support portion (23) through one opening (23b) of the openings (23a, 23b) at both ends, and the detection portion (21) is attached to the other opening (23a) of the openings (23a, 23b) at both ends.

[0013] In the fourth aspect, the indicator pin (13) and the detection portion (21) can be disposed opposite each other.

[0014] In a fifth aspect, in the third or fourth aspect, the support portion (23) has a transparency that allows the indicator pin (13) inside the support portion (23) to be visible from outside the support portion (23).

[0015] In the fifth aspect, the operation of the indicator pin (13) can be visually confirmed from outside the support portion (23).

[0016] A sixth aspect is any one of the third to fifth aspects, wherein the indicator pin (13) moves in the support portion (23) in a direction toward or away from the detection portion (21).

[0017] In the sixth aspect, the detection unit (21) can detect the indicator pin (13) based on the distance from the indicator pin (13).

[0018] A seventh aspect is any one of the first to sixth aspects, wherein the detection unit (21) includes a proximity sensor.

[0019] In the seventh embodiment, the movement of the piston (12) can be effectively detected.

[0020] An eighth aspect is any one of the first to seventh aspects, further comprising a receiving device (26) that wirelessly receives the information transmitted from the transmitting unit (22), and the receiving device (26) is portable.

[0021] In the eighth aspect, even if the radio wave conditions are poor, by carrying the receiving device (26) to a place where the radio wave conditions are improved, the information indicating the detection result of the detecting unit (21) can be effectively received wirelessly.

[0022] A ninth aspect is the eighth aspect, wherein the receiving device (26) includes a display unit that displays the information.

[0023] In the ninth aspect, it is possible to check, by means of the display unit, whether or not the distributing valve (10) is operating normally.

[0024] A detection system according to a tenth aspect includes the detection device according to any one of the first to ninth aspects and the distributing valve (10).

[0025] In the tenth aspect, the ease of maintenance can be improved. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a schematic diagram showing the configuration of a detection system. [Diagram 2] FIG. 2 is a cross-sectional view showing the operation of the distribution valve. [Diagram 3] FIG. 3 is a cross-sectional view showing the operation of the distribution valve. [Figure 4] FIG. 4 is a cross-sectional view showing the operation of the distribution valve. [Diagram 5] FIG. 5 is a cross-sectional view showing the operation of the distribution valve. [Figure 6] FIG. 6 is a schematic diagram showing a receiving device. [Figure 7] FIG. 7 is a schematic diagram showing the configuration of a fuel supply system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the embodiments shown below, and various modifications are possible within the scope of the technical idea of ​​the present disclosure. Since each drawing is intended to conceptually explain the present disclosure, dimensions, ratios, or numbers may be exaggerated or simplified as necessary for ease of understanding. In each embodiment, modified example, and drawing, the same or equivalent parts are given the same reference symbols, and detailed descriptions and descriptions of the accompanying effects will not be repeated.

[0028] -Detection System- A detection system (1) according to an embodiment of the detection system of the present invention will be described.

[0029] As shown in FIG. 1, the detection system (1) includes a dispensing valve (10), a housing (11), and a detection device (20).

[0030] -Distribution valve configuration- The distribution valve (10) supplies a supply material to a target object by the pressure of the supply material alternately pumped to the distribution valve (10). The distribution valve (10) is provided in a housing (11). In this embodiment, a plurality (three) of distribution valves (10) are provided in the housing (11). The number of distribution valves (10) provided in the housing (11) is not particularly limited.

[0031] The distributor valve (10) includes a piston (12), an indicator pin (13), and a pin support portion (14). The indicator pin (13) is fixed to the piston (12). The indicator pin (13) has a rod-like shape and moves together with the piston (12). Hereinafter, the movement direction of the piston (12) and the indicator pin (13) may be referred to as an axial direction (M). The piston (12) and the indicator pin (13) reciprocate along the axial direction (M). The indicator pin (13) protrudes from the piston (12) toward one side (M1) of the axial direction (M). The pin support portion (14) supports the indicator pin (13) so as to be movable along the axial direction (M).

[0032] The housing (11) is provided with a first passage (11a), a second passage (11b), a third passage (11c), a fourth passage (11d), and discharge passages (11e, 11f). When the housing (11) is provided with a plurality of distributor valves (10), the first passage (11a), the second passage (11b), the third passage (11c), the fourth passage (11d), and the discharge passages (11e, 11f) are provided for each distributor valve (10).

[0033] The first passage (11a) extends along the axial direction (M). The first passage (11a) includes an opening (111a). The opening (111a) is located on one side (M1) in the axial direction (M) on the outer surface of the housing (11) and communicates with the outside of the housing (11). A piston (12) is provided in the first passage (11a). A pin support portion (14) is provided in the opening (111a). A thread groove formed in the housing (11) at a location where the opening (111a) is formed and a thread groove formed on an outer circumferential surface (14c) of the pin support portion (14) are fitted together, whereby the pin support portion (14) is attached to the opening (111a) (housing (11)). A hole (14b) penetrating in the axial direction (M) is formed in the pin support portion (14), and the indicator pin (13) is inserted into the hole (14b). The first passage (11a) is divided into a first chamber (11a1) and a second chamber (11a2). The first chamber (11a1) is a space located on one side (M1) in the axial direction (M) with respect to the piston (12). The second chamber (11a2) is a space located on the other side (M2) in the axial direction (M) with respect to the piston (12).

[0034] The second passage (11b) extends along the axial direction (M). A spool (15) is disposed in the second passage (11b). The spool (15) is provided with a plurality of lands (15a). The second passage (11b) is partitioned into a plurality of compartments (16a, 16b, 16c, 16d) by the plurality of lands (15a). The plurality of compartments (16a, 16b, 16c, 16d) are formed in the order of the compartment (16a), the compartment (16b), the compartment (16c), and the compartment (16d) toward the other side (M2) in the axial direction (M). The compartment (16a) is communicated with a through hole (17a). The compartment (16d) is communicated with a through hole (17b).

[0035] The third passage (11c) communicates with the first chamber (11a1) and the second passage (11b). The fourth passage (11d) communicates with the second chamber (11a2) and the second passage (11b). The discharge passages (11e, 11f) communicate with the second passage (11b) and the outside of the housing (11).

[0036] -Distribution valve operation- In the following, the position at which the piston (12), the indicator pin (13), and the spool (15) move furthest in one direction (M1) in the axial direction (M) may be referred to as top dead center, and the position at which they move furthest in the other direction (M2) in the axial direction (M) may be referred to as bottom dead center.

[0037] 2 and 3, when the piston (12), the indicator pin (13), and the spool (15) are at the bottom dead center and lubricating oil is supplied to the compartment chamber (16d) through the through hole (17b), the spool (15) moves to the top dead center, and lubricating oil is supplied from the compartment chamber (16d) to the second chamber (11a2) through the fourth passage (11d), so that the piston (12) and the indicator pin (13) move to the top dead center. As a result, the lubricating oil in the first chamber (11a1) is discharged to the outside of the housing (11) through the third passage (11c), the compartment chamber (16b), and the discharge passage (11e).

[0038] As shown in Figures 4 and 5, when the piston (12), the indicator pin (13), and the spool (15) are at the top dead center and lubricating oil is supplied to the compartment chamber (16a) through the through hole (17a), the spool (15) moves to the bottom dead center, and lubricating oil is supplied from the compartment chamber (16a) to the first chamber (11a1) through the third passage (11c), so that the piston (12) and the indicator pin (13) move to the bottom dead center. As a result, the lubricating oil in the second chamber (11a2) is discharged to the outside of the housing (11) through the fourth passage (11d), the compartment chamber (16c), and the discharge passage (11f). The lubricating oil is an example of a supply.

[0039] The lubricating oil discharged from the discharge passages (11e, 11f) is supplied to an object such as a bearing. The distributor valve (10) supplies a constant amount of lubricating oil to the object by alternately repeating the operations shown in Figures 2 and 3 and the operations shown in Figures 4 and 5.

[0040] -Detection device configuration- As shown in FIGS. 1 and 2, the detection device (20) includes a detection unit (21), a transmission unit (22), a support unit (23), and a control device (24).

[0041] The detection unit (21) detects the indicator pin (13). In this embodiment, the detection unit (21) includes a proximity sensor. The proximity sensor may be a laser-type proximity sensor or an ultrasonic-type proximity sensor. A battery-type power supply unit for supplying power to the detection unit (21) is provided within a housing (21a) of the detection unit (21).

[0042] The transmitter (22) wirelessly transmits information indicating the detection result of the detector (21). The transmitter (22) includes a wireless communication module for wirelessly transmitting the information indicating the detection result of the detector (21). The wireless communication module may be, for example, a device conforming to a short-range wireless communication standard such as BLE (Bluetooth Low Energy) (registered trademark), or may be a communication module such as a LAN board for performing wireless communication via a network such as the Internet. The wireless communication method of the transmitter (22) is not particularly limited, and may be, for example, ZigBee (registered trademark), or the like. A battery-powered power supply unit for supplying power to the transmitter (22) is provided in the housing (22a) of the transmitter (22). Note that a power supply unit may be provided in either the housing (21a) of the detector (21) or the housing (22a) of the transmitter (22), and the power supply unit may function as a power supply unit for both the detector (21) and the transmitter (22).

[0043] The housing (21a) of the detection unit (21) and the housing (22a) of the transmission unit (22) are separate bodies. The transmission unit (22) is disposed, for example, near the detection unit (21).

[0044] The detection unit (21) and the transmission unit (22) are connected by wire. One end of a communication cable (25) is connected to the detection unit (21), and the other end of the communication cable (25) is connected to the transmission unit (22). Information indicating the detection result of the detection unit (21) is sent to the transmission unit (22) through the communication cable (25) and then wirelessly transmitted from the transmission unit (22).

[0045] The support part (23) supports the detection part (21). The support part (23) has a cylindrical shape with openings (23a, 23b) at both ends. The openings (23a, 23b) communicate the inside and outside of the support part (23). The openings (23a, 23b) at both ends face each other in the axial direction (M). The opening (23a) is located on one side (M1) in the axial direction (M) with respect to the opening (23b. The detection part (21) is attached to the opening (23a). A thread groove is formed on the inner peripheral surface of the opening (23a) and the outer peripheral surface (21a1) of the detection part (21), and the thread groove of the opening (23a) and a nut (27) are fitted into the thread groove of the detection part (21), thereby attaching the detection part (21) to the opening (23a). The pin support portion 14 is attached to the opening 23b. A thread groove is formed between the inner peripheral surface of the opening 23b and the outer peripheral surface 14a of the pin support portion 14, and the thread groove of the opening 23b is fitted into the thread groove of the pin support portion 14, thereby attaching the pin support portion 14 to the opening 23b.

[0046] The indicator pin 13 is disposed in the support portion 23 through the opening 23b. The support portion 23 is made of, for example, resin and has transparency. The support portion 23 has transparency such that a person can visually recognize the indicator pin 13 in the support portion 23 from outside the support portion 23 (see FIG. 4).

[0047] As shown in FIG. 1, the control device (24) includes, for example, a PC (Personal Computer). The control device (24) includes a communication unit (24a), a display unit (24b), a storage unit (24c), and a control unit (24d). The communication unit (24a) includes a wireless communication module for wireless communication with the transmission unit (22). The display unit (24b) includes, for example, a display panel such as a liquid crystal panel, and displays information indicating the detection result of the detection unit (21). The display unit (24b) may display information indicating the detection result of the detection unit (21) using, for example, characters, lamps, or the like. The storage unit (24c) includes a storage device such as a ROM, a RAM, and a HDD. The storage unit (24c) stores various computer programs and the like executed by the control unit (24d). The control unit (24d) includes a processor such as a CPU and an MPU. The control unit (24d) controls each element of the control device (24) by executing a computer program stored in the storage unit (24c).

[0048] -Detection device operation- As shown in Fig. 2, the detection unit (21) which is a proximity sensor detects an object located within a predetermined range (P) relative to the detection unit (21). As shown in Figs. 2 to 5, the piston (12) moves, causing the indicator pin (13) to reciprocate within the support unit (23) in a direction (axial direction (M)) toward and away from the detection unit (21). When the indicator pin (13) enters the predetermined range (P), the indicator pin (13) is detected (see Figs. 3 and 4), and when the indicator pin (13) moves away from the predetermined range (P), the indicator pin (13) is not detected (see Figs. 2 and 5), whereby the detection unit (21) detects the movement of the indicator pin (13).

[0049] 3 and 4, when the indicator pin (13) approaches the detection unit (21) and enters within a predetermined range (P), the detection unit (21) detects the indicator pin (13). As a result, detection information of the indicator pin (13) is wirelessly transmitted from the transmission unit (22) to the control device (24). As a result, the communication unit (24a) of the control device (24) wirelessly receives the detection information of the indicator pin (13), and the display unit (24b) displays the detection information of the indicator pin (13).

[0050] When the distributing valve (10) is operating normally, the indicator pin (13) repeats the operations shown in Figures 2 to 5. At this time, the detection unit (21) periodically detects the indicator pin (13), and the transmission unit (22) wirelessly transmits the detection information of the indicator pin (13) at regular intervals. Hereinafter, the detection information of the indicator pin (13) detected at regular intervals may be referred to as operation information of the indicator pin (13).

[0051] When the distributing valve (10) is operating normally, the communication unit (24a) of the control device (24) wirelessly receives operation information of the indicator pin (13) from the transmission unit (22), causing the display unit (24b) of the control device (24) to display the operation information of the indicator pin (13).

[0052] On the other hand, when the distributing valve (10) is not operating normally, the transmitting unit (22) does not transmit the operation information of the indicator pin (13), and the display unit (24b) of the control device (24) does not display the operation information of the indicator pin (13).

[0053] By visually checking the display portion (24b), an operator can check whether the distributing valve (10) is operating normally.

[0054] -effect- As described above, the detection device (20) includes the detection unit (21) that detects the operation of the indicator pin (13) that is linked to the piston (12) and the transmission unit (22) that wirelessly transmits information indicating the detection result of the detection unit (21). This eliminates the need for wiring to connect the transmission unit (22) to the control device (24) that receives the information transmitted from the transmission unit (22), thereby eliminating the need for complicated work such as connecting and managing the wiring. As a result, the maintainability of the detection device (20) can be improved. In addition, when there are multiple wirings in the facility in which the detection system (1) is installed, the maintenance of the detection device (20) does not require complicated work such as identifying which of the multiple wirings connects the transmission unit (22) to the control device (24), so that the maintainability of the detection device (20) can be improved.

[0055] Furthermore, since the wiring connecting the transmitting unit (22) and the control device (24) is no longer necessary, the work of managing the wiring is no longer necessary, and the detection system (1) can be easily installed.

[0056] In addition, the housing (21a) of the detection unit (21) and the housing (22a) of the transmission unit (22) are separate, and the detection unit (21) and the transmission unit (22) are connected by wire. This allows the housings of the detection unit (21) and the transmission unit (22) to be made more compact than when the detection unit (21) and the transmission unit (22) are integrated into a single housing, improving the degree of freedom in the installation locations of the detection unit (21) and the transmission unit (22). In addition, a location different from the installation location of the detection unit (21) can be selected as the installation location of the transmission unit (22), and it is possible to select a location where wireless communication can be performed well and where communication is less likely to be interfered with by obstacles, for example.

[0057] Furthermore, if the control device (24) does not receive a signal from the detection unit (21), an operator must go to the location where the indicator pin (13) is installed and visually check whether the indicator pin (13) is operating normally. In this case, since the support unit (23) is transparent, an operator can easily visually check whether the indicator pin (13) is operating from outside the support unit (23) without disassembling the support unit (23) (see FIG. 4).

[0058] The detection unit (21) also includes a proximity sensor. This makes it possible to suppress erroneous detection by the detection unit (21) even if an error occurs in the position of the top dead center of the piston (12) due to a phase difference between the piston (12) and the indicator pin. The detection unit (21) and the transmission unit (22) are in a standby state except when detecting the indicator pin (13), and are always capable of detecting and communicating with the indicator pin (13). However, they do not detect or communicate with the indicator pin (13) unless the indicator pin (13) moves within the predetermined range (P). This allows the detection unit (21) and the transmission unit (22) to operate efficiently. As a result, the battery life of the detection unit (21) and the transmission unit (22) can be improved.

[0059] -Modification of the detection device- As shown in FIG. 6, the modified example of the detection device (20) includes a detection section (21), a transmission section (22), a support section (23), a control device (24), and a reception device (26).

[0060] The receiving device 26 is, for example, a portable device such as a tablet PC or a smartphone, or may be a portable device dedicated to checking the operation information of the indicator pin 13.

[0061] The receiving device (26) includes a communication unit (26a). The communication unit (26a) includes a wireless communication module for communicating with the transmission unit (22) of the detection device (20) and the communication unit (24a) of the control device (24). The receiving device (26) receives (wirelessly receives) information indicating the detection result of the detection unit (21) wirelessly transmitted from the transmission unit (22). The communication unit (26a) is connected to the control device (24) by wire or wirelessly, and transmits information indicating the detection result of the detection unit (21) sent from the transmission unit (22) to the control device (24) by wire or wirelessly. The communication unit (24a) of the control device (24) receives the information indicating the detection result of the detection unit (21) via the receiving device (26). The receiving device (26) is provided with a battery-powered power supply unit for supplying power to components of the receiving device (26), such as the communication unit (26a).

[0062] If there is a communication failure between the transmitter (22) of the detection device (20) and the transmitter (22) of the control device (24) due to, for example, the presence of an obstacle, the worker carries the receiver (26) and moves to a location where communication with the transmitter (22) is good. As a result, the receiver (26) receives information indicating the detection result of the detection device (21) and transmits the received information from the receiver (26) to the control device (24), thereby making it possible to resolve the communication failure.

[0063] The receiving device (26) may include a display unit (such as a liquid crystal panel) that displays information indicating the detection result of the detecting unit (21). This allows an operator to check whether the distributing valve (10) is operating normally by visually checking the display unit of the receiving device (26).

[0064] -Fueling system- A fuel supply system (2) according to an embodiment of the fuel supply system of the present invention will now be described.

[0065] As shown in Figs. 1 and 7, the fuel supply system (2) includes a detection system (1), a fuel supply pump (100), main supply pipes (L1, L2), supply branch pipes (L11, L12), a fuel supply pipe (L21), and a control device (300). The fuel supply pump (100) supplies lubricating oil. The main supply pipes (L1, L2) are connected to the fuel supply pump (100). The supply branch pipes (L11, L12) are connected to the main supply pipes (L1, L2) and the distribution valve (10). The supply branch pipe (L11) is connected to the main supply pipe (L1) and the through hole (17a) of the distribution valve (10). The supply branch pipe (L12) is connected to the main supply pipe (L2) and the through hole (17b) of the distribution valve (10). The fuel supply pipe (L21) communicates with the discharge passages (11e, 11f) of the distributing valve (10) and with the bearing (200), which is an example of an object. The control device (300) includes a processor, such as a CPU or an MPU, that controls the operation of the fuel supply pump (100), and a memory that stores a program executed by the processor. The control device (300) may include the function of the control device (24) (see FIG. 1).

[0066] The lubricating oil pumped by the oil supply pump (100) is supplied to the bearing (200) through the main supply pipes (L1, L2), the branch supply pipes (L11, L12), the distributing valve (10), and the oil supply pipe (L21). At this time, the distributing valve (10) repeats the operations shown in Figs. 2 to 5, so that the lubricating oil is supplied to the bearing (200) at a constant rate. Operation information of the indicator pin (13) at this time is wirelessly transmitted from the transmitting unit (22). Operation information of the indicator pin (13) from the transmitting unit (22) is wirelessly received by the communicating unit (24a) (or the communicating unit (26a) of the receiving device (26) when the receiving device (26) is used). The worker can check whether the distributing valve (10) is operating normally by visually checking the display unit (24b) (or the display unit (26b) of the receiving device (26) when the worker carries the receiving device (26)).

[0067] -Modification of the detection unit- The detection unit (21) in this embodiment is a proximity sensor. However, the present invention is not limited to this. The detection unit (21) may be any sensor capable of detecting the reciprocating movement of the indicator pin (13), and may be, for example, a limit switch. In this case, the detection area (within a predetermined range (P)) of the detection unit (21) is the contact point between the limit switch and the indicator pin (13).

[0068] Although the embodiments and modifications have been described above, it will be understood that various modifications of form and details are possible without departing from the spirit and scope of the claims. Furthermore, the above embodiments, modifications, and other embodiments may be appropriately combined or substituted as long as the functions of the subject of the present disclosure are not impaired.

[0069] The descriptions "first," "second," "third," etc. mentioned above are used to distinguish the words to which these descriptions are attached, and do not limit the number or order of the words. [Industrial Applicability]

[0070] As described above, the present disclosure is useful for detection devices and detection systems. [Explanation of symbols]

[0071] 1. Detection System 2. Refueling System 10. Distribution valve 11. Housing 12 Piston 13 Indicator pin 14 Pin support 20 Detection device 21 Detection unit 22 Transmitter

Claims

1. A detection device for a distribution valve (10) that delivers a supply by operating a piston (12), comprising: a detection unit (21) for detecting the movement of an indicator pin (13) that is linked to the piston (12); a transmitter (22) that wirelessly transmits information indicating a detection result of the detector (21); A detection device comprising:

2. a housing (21a) of the detection unit (21) and a housing (22a) of the transmission unit (22) are separate bodies; The detection device according to claim 1 , wherein the detection unit (21) and the transmission unit (22) are connected by wire.

3. a support portion (23) that covers the indicator pin (13) and supports the detection portion (21); 3. The detection device according to claim 1 or 2, wherein the support (23) is transparent.

4. The support portion (23) has a cylindrical shape with openings (23a, 23b) at both ends, the indicator pin (13) is disposed in the support portion (23) through one of the openings (23a, 23b) at both ends, The detection device according to claim 3 , wherein the detection portion (21) is attached to the other opening (23a) of the openings (23a, 23b) at both ends.

5. 4. The detection device according to claim 3, wherein the support portion (23) has a transparency to such an extent that the indicator pin (13) inside the support portion (23) can be visually observed from outside the support portion (23).

6. The detection device according to claim 3 , wherein the indicator pin (13) moves within the support portion (23) in a direction toward and away from the detection portion (21).

7. The detection device according to claim 1 or 2, wherein the detection portion (21) includes a proximity sensor.

8. a receiving device (26) that wirelessly receives the information transmitted from the transmitting unit (22), 3. The detection device of claim 1 or 2, wherein the receiving device (26) is portable.

9. 9. The detection device of claim 8, wherein the receiving device (26) includes a display for displaying the information.

10. A detection system comprising a detection device according to claim 1 or 2 and the dispensing valve (10).

Images