JP2018062884A - Water supply device and water supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress unintended operation in a water supply device which can communicate with an external device.SOLUTION: A water supply device for supplying water to a building includes a communication section which can communicate with an external device. The water supply device determines whether the external device satisfies a prescribed condition or not based on communication between the communication section and the external device, and authenticates the external device when it is determined that the external device satisfies the prescribed condition. The communication section can communicate various information of the water supply device to the external device when the external device is authenticated.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a water supply device and a water supply system.

  A water supply device is widely used to supply tap water to a water supply target such as a building. The water supply system of the water supply system uses the water tank system that temporarily stores the water in the water main in the water receiving tank and pressurizes the water in the water receiving tank with a pump, and the main pressure of the water main. A directly connected water supply system that supplies water to a water supply target by increasing the pressure with a pump is known. In the water supply device, the pump is controlled by the control unit, and for example, the estimated terminal pressure constant control or the target pressure constant control is performed based on the discharge side pressure of the pump. When the water supply apparatus includes a plurality of pumps, control of the number of operating pumps and control of rotating the pump to be activated are performed according to the amount of water supply. Control of the pump by such a control part is performed based on the setting value (setting information) memorize | stored beforehand in the memory | storage part according to the installation condition of the water supply apparatus, and the water supply object.

  The setting information of the water supply apparatus may be required to be changed according to the usage status of the building and the environment. Generally, the setting information is changed by an operation panel provided in the water supply device. However, since the water supply apparatus is usually automatically controlled, there are few opportunities to operate the operation panel. Moreover, the water supply apparatus may be installed in an environment with a lot of electrical noise such as a machine room or a pump room, and a 7-segment LED and an indicator lamp that are resistant to electrical noise are used. For this reason, the operation panel has a relatively simplified configuration, and the operation for changing the setting information is less frequent, and the operation is likely to be complicated without regard for convenience. In particular, when a plurality of setting information is changed, operation of the operation panel becomes complicated.

  And in recent years, the water supply apparatus which can be operated with a portable terminal is proposed. By operating the water supply device on the portable terminal, the operation panel of the water supply device can be simplified, and even a user unfamiliar with the water supply device can easily operate the water supply device using the operation unit of the portable terminal. Can do.

JP 2005-171788 A

  In addition to what can be operated with a portable terminal as described above, a water supply device that can communicate with an external communication device via the Internet or the like has been proposed. Thus, when the water supply apparatus can communicate with external devices such as a portable terminal and an external communication device, it is assumed that communication is performed simultaneously from a plurality of external devices to the water supply apparatus. It is also assumed that the operation panel is operated when the external device and the water supply device are communicating. In such a case, a plurality of setting inputs may be simultaneously made to the water supply device, or the water supply device may be operated when the setting information of the water supply device is changed, thereby causing an unintended operation of the water supply device.

  This invention is made | formed in view of the situation mentioned above, and it aims at suppressing the operation | movement which is not intended in the water supply apparatus which can communicate with an external device.

(Means 1)
The water supply apparatus of this invention is a water supply apparatus for supplying water to a building, Comprising: The communication part which can communicate with an external device is provided. The water supply device determines whether or not the external device satisfies a predetermined condition, and authenticates the external device when it is determined that the external device satisfies the predetermined condition. And a communication part can communicate the various information of a water supply apparatus with an external device, when the external device is authenticated.
With this configuration, the water supply device communicates various types of information on the water supply device with the external device when the external device satisfies the predetermined condition and is authenticated. Thereby, it can prevent that various information communicates between a water supply apparatus and the external apparatus which is not authenticated, and it can suppress that a water supply apparatus does the operation | movement which is not intended.

(Means 2)
It is a water supply apparatus of the means 1, Comprising: You may further provide the setting part which can change the various setting information in a water supply apparatus. In addition, the various setting information may include change restriction information for restricting a change based on a signal from an external device for at least part of the various setting information. And the water supply apparatus may be able to change various setting information based on the signal from an external device and change restriction information.
If it carries out like this, the various setting information in a water supply apparatus can be changed with the signal from an external device. Moreover, the change based on the signal from the external device can be restricted by setting the change restriction information, and various setting information can be prevented from being changed to unintended information by the external device apart from the water supply device.

(Means 3)
The water supply apparatus according to Means 1 or 2, further including a control unit that controls the pump, and the setting unit may further include a switch for controlling the water supply apparatus. The control unit may invalidate the switch operation when the switch is operated while the external device is authenticated.
If it carries out like this, when the external apparatus is authenticated and the water supply apparatus and the external apparatus are communicating, when the switch of a setting part is operated, it can suppress that a water supply apparatus performs the operation | movement which is not intended.

(Means 4)
It is a water supply apparatus as described in any one of the means 1 to 3, Comprising: A water supply apparatus may further have a display part which displays the various information of a water supply apparatus. The display unit may perform a predetermined display when the communication unit authenticates the external device.
In this way, the user operating the display unit can recognize whether or not the external device has been authenticated.

(Means 5)
The water supply device according to any one of the means 1 to 4, wherein the communication unit may not communicate with an external device different from the authenticated external device when the external device is authenticated.
If it carries out like this, it can prevent that a setting input is simultaneously made from a some external device with respect to a water supply apparatus, and it can suppress that the water supply apparatus does the operation | movement which is not intended.

(Means 6)
It is a water supply apparatus as described in any one of the means 1-5, Comprising: The authentication of an external apparatus may be cancelled | released when predetermined time passes since the authentication of an external apparatus.
If it carries out like this, it can prevent that a setting input is not received with respect to a water supply apparatus from a setting part or another external device over a long period exceeding a predetermined period.

(Means 7)
It is a water supply apparatus as described in any one of the means 1-6, Comprising: The water supply apparatus may permit the change of the various setting information by the said setting part in predetermined | prescribed setting mode. And the water supply apparatus does not need to permit the change of the various setting information based on the signal from an external device, when it is a predetermined setting mode.
By doing so, it is possible to prevent the setting input from the external device from being accepted when the setting input is made by the operation display unit.

(Means 8)
The water supply device according to any one of means 1 to 7, wherein the communication unit may include a control unit side antenna unit that receives a radio wave from an external device and converts the radio wave into electric power.

(Means 9)
It is a water supply apparatus as described in any one of the means 1 to 8, Comprising: A communication part may transmit various information to an external apparatus by near field communication (NFC).

(Means 10)
It is a water supply apparatus as described in any one of the means 1-9, Comprising: You may further have a memory in which the individual identification information of a water supply apparatus is memorize | stored. The water supply device may authenticate the external device by determining that the external device satisfies a predetermined condition when receiving authentication information corresponding to the individual identification information from the external device.

(Means 11)
The water supply system according to the present invention stores the water supply device according to the means 10, the individual identification information of the water supply device and the authentication information in association with each other, and can communicate with the external device, Is provided. And an external server may transmit the information for authentication linked | related with the individual identification information of a water supply apparatus to an external device, when the individual identification information of a water supply apparatus is received from an external device.
If it carries out like this, an external device can communicate with an external server and can acquire the information for authentication of a water supply apparatus, and can be authenticated from a water supply apparatus using the acquired information for authentication. Thereby, the security in authentication can be improved.

(Means 12)
In the water supply system according to the means 11, the external server may store the device information of the water supply device in association with the individual identification information of the water supply device. And an external server may transmit the apparatus information of the said water supply apparatus linked | related with the individual identification information of the water supply apparatus to an external apparatus, when the individual identification information of a water supply apparatus is received from an external device.
If it carries out like this, an external device can communicate with an external server and can acquire the apparatus information of a water supply apparatus. The external device may change the display on the external device based on the acquired device information, or may change the content of communication with the water supply device.

(Means 13)
Another water supply apparatus of the present invention is a water supply apparatus for supplying water to a building, and includes a setting unit capable of changing various setting information in the water supply apparatus and a communication unit capable of communicating with an external device. The various setting information includes change restriction information for restricting a change based on a signal from an external device for at least a part of the various setting information. And the water supply apparatus can change various setting information based on the signal from an external apparatus, and change restriction information.
With this configuration, various setting information in the water supply device can be changed by a signal from the external device. Moreover, the change based on the signal from the external device can be restricted by setting the change restriction information, and various setting information can be prevented from being changed to unintended information by the external device apart from the water supply device.

(Means 14)
The water supply device according to any one of the means 3 to 12 quoting the means 2, or the water supply device according to the means 13, wherein the change of various setting information is restricted by the change restriction information. When there is a change, it is not necessary to communicate with an external device regarding the change of various setting information.
If it carries out like this, when the change of various setting information is restrict | limited by change restriction information, the water supply apparatus can prevent that various setting information is changed by an external device.

(Means 15)
The water supply device according to any one of the means 3 to 12 quoting the means 2, or the water supply device according to the means 13 or 14, wherein the change restriction information is an external device for each piece of setting information. It may be information that can limit the change based on the signal from. And the water supply device can change the information that is not restricted by the change restriction information among the various setting information based on the signal from the external device, and the change is restricted by the change restriction information among the various setting information. The information may not be changed based on a signal from an external device.
By so doing, it is possible to prohibit changing some of the various pieces of setting information and change the remaining information according to the change restriction information.

(Means 16)
The water supply device according to any one of the means 3 to 12 citing the means 2, or the water supply device according to any one of the means 13 to 15, wherein the water supply device communicates illegally from an external device. When a change is made, the change restriction information may be set so that a change based on a signal from an external device is restricted for at least some of the various pieces of setting information.
In this way, when unauthorized communication is performed from the external device, it is possible to prohibit changes by at least a part of the various setting information by the external device, and it is possible to improve security against unauthorized access.

It is a top view which shows an example of the water supply apparatus which concerns on embodiment of this invention. It is a front view which shows an example of the water supply apparatus which concerns on embodiment of this invention. It is a left view which shows an example of the water supply apparatus which concerns on embodiment of this invention. It is a schematic block block diagram which shows an example of a control part. It is a flowchart which shows an example of the setting information change process performed by a control part. It is a flowchart which shows an example of the operation display part setting process performed by a control part. It is a figure which shows the control part and external display of a modification. It is a figure which shows an example of a water supply system.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted.

  1 to 3 are schematic views showing an example of a water supply apparatus according to an embodiment of the present invention. FIG. 1 is a plan view, FIG. 2 is a front view, and FIG. 3 is a left side view. As shown in the drawing, in the water supply apparatus 10, two pumps 30A and 30B and a pressure tank 50 disposed between these pumps 30A and 30B are placed on a base 20. The water supply apparatus 10 includes a discharge pipe 40 connected to the discharge side of the pumps 30 </ b> A and 30 </ b> B and a control panel 60 installed on the upper part of the pressure tank 50. Each component will be described below.

  First, as the water supply method to the building of the water supply device 10, the water main tank water is temporarily stored in the water receiving tank, and the water receiving tank method in which the water in the water receiving tank is pressurized to the water supply target with a pump, There is a direct water supply system that supplies water to the water supply target by increasing the pressure with a pump using the main pipe pressure. In addition, as a water supply method for the water supply target, a direct-feed type in which the pressure increased by the pump is directly pumped, or the water increased in pressure by the pump is temporarily stored in a roof tank, and water is supplied under natural flow. There is an elevated water tank system.

  The base 20 has a substantially rectangular flat plate shape, and both sides in the longitudinal direction are bent downward and then bent outward to constitute L-shaped fixed sides 23 and 23.

  The pumps 30A and 30B include pump units 31A and 31B and motor units 33A and 33B for driving them. Suction portions 35A and 35B for connecting a supply pipe (not shown) branched from a water receiving tank or a water main pipe (not shown) are provided on the front end face of the pump portions 31A and 31B, and upper surfaces of the pump portions 31A and 31B. Are provided with discharge portions 37A and 37B. In the case of the direct water supply method, the suction portions 35A and 35B are connected to a supply pipe branched from the water main through a backflow prevention device (not shown), and the pressure of the water main is detected in the supply pipe. A pressure sensor (not shown) is provided. Hereinafter, the pressure value detected by the pressure sensor that measures the pressure of the water main provided in the supply pipe is referred to as “suction side pressure”.

  The discharge pipe 40 is a substantially T-shaped pipe, and both ends thereof are connected to the discharge portions 37A and 37B of both pumps 30A and 30B via flow switches 49A and 49B and check valves (check valves) 47A and 47B. Has been. A discharge collecting pipe 43 is provided at the center of the discharge pipe 40. As a result, the discharge sides of both pumps 30A and 30B are connected in parallel, and the discharge fluids of both pumps 30A and 30B merge at the discharge collecting pipe 43. Further, when the pumps 30A and 30B are stopped by the check valves 47A and 47B, the water in the discharge pipe 40 does not flow backward to the pumps 30A and 30B. A connecting pipe 45 that connects the discharge pipe 40 to the pressure tank 50 is attached to the lower part of the center of the discharge pipe 40, and a pressure sensor 48 that detects the pressure in the pipe is attached to the discharge pipe 40. Due to the effects of the pressure tank 50 and the check valves 47A and 47B, the pressure in the discharge pipe 40 after the pumps 30A and 30B are stopped is maintained at a constant pressure unless water is used. Hereinafter, the pressure value detected by the pressure sensor 48 is referred to as “discharge side pressure”.

  In this embodiment, the pumps 30A and 30B and two pumps are configured, but the number of pumps may be one or a plurality of three or more.

  The control panel 60 is configured by incorporating a control unit 65 composed of various electric circuits for controlling the operation of the pump in a case 61. The control unit 65 includes a communication unit 73 that communicates with the external display device 80 in a wired or wireless manner. As the external display device 80, for example, a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, or a tablet, or a dedicated terminal device such as a remote monitor is employed.

  FIG. 4 is a schematic block diagram illustrating an example of the control unit. As shown in the figure, the control unit 65 includes a control memory 66, a calculation unit 69, an I / O unit (input unit and output unit) 70, a communication unit 73, an operation panel (operation display unit) 79, It has. The operation panel (operation display unit) 79 includes a setting unit 71 and a display unit 72.

Further, as shown in FIG. 3, the control unit 65 may be a separate substrate from the communication unit 73. In that case, the control unit 65 and the communication unit 73 are connected by serial communication, a signal line, or the like. When the control unit 65 and the communication unit 73 are separate boards, they are installed in a place away from the water supply apparatus 10 (for example, a manager's room or a remote monitoring room), and the control unit 65 and serial communication, signal line or wireless The communication unit 73 may be configured in a remote monitor connected by communication or the like.

  The setting unit 71 is used to set various setting values (setting information) necessary for water supply by an external operation (setting input). Various setting values set in the setting unit 71 are stored in the control memory 66. As an example, the user can input and change the stop pressure, the starting pressure, and other information necessary for control as setting information via the setting unit 71 (setting input).

  The setting information may include change restriction information for restricting change of the setting information by the external display device 80. When changing the setting information is prohibited by the change restriction information, the setting information cannot be changed from the external display device 80. In this case, change of the setting information by the external display device 80 is permitted by changing the change restriction information through the setting unit 71. Thereby, for example, a third party can be prevented from changing the setting information by the external display device 80 during the maintenance work. Moreover, the water supply apparatus 10 may be installed on the outer wall surface facing the road of a condominium or a building, and there is a concern that a third party may gain unauthorized access using the external display device 80. When these unauthorized accesses are confirmed, the control unit 65 may prohibit the change of the setting information by the external display device 80 by changing the change restriction information. Then, setting input cannot be performed on the external display device 80, and unauthorized access or the like by a third party can be prevented. Further, the control unit 65 may prohibit communication by the external display device 80 with the change restriction information. If it does so, since it becomes impossible to browse the various information of the water supply apparatus 10 with the external indicator 80, the security to unauthorized access will improve more. The change restriction information may be set for each content of the setting information.

  In the present embodiment, the setting unit 71 is provided with a setting button 75 for entering a setting mode for setting various setting information. When the setting button 75 is pressed and held for a predetermined time (for example, 1 second), the setting unit 71 (operation display unit 79) enters the setting mode, and the user can set various setting information from the setting unit 71.

  The display unit 72 functions as a user interface, and various data such as set values stored in the control memory 66 and the current operation status (operation information) of the pumps 30A and 30B, for example, the pumps 30A and 30B, respectively. The operation or stop, operation frequency, current, suction side pressure, discharge side pressure, trip of the inverter that drives the motor units 33A and 33B, suction side pressure drop alarm, water tank alarm, and the like are displayed.

  As the control memory 66, a non-volatile memory such as a ROM, HDD, EEPROM, FeRAM, and flash memory, and a volatile memory such as a RAM are used. The control memory 66 stores a control program for controlling the water supply device 10, device information of the water supply device 10, a failure history, an operation history, setting information input through the setting unit 71, and the like. In addition, various data, for example, data of operation results (operation time, integrated value, etc.), pressure values (suction side pressure, discharge side pressure), and settings input through the setting unit 71 are input to the control memory 66. Information and data input through the I / O unit 70 or output through the I / O unit 70 are also stored.

  As the I / O unit 70, a port or the like is used. The I / O unit 70 receives the input signal of the pressure sensor 48, the signals of the flow switches 49A and 49B, and sends them to the calculation unit 69. A CPU is used as the calculation unit 69. The calculation unit 69 is configured to set various types of data for operating the pumps 30A and 30B based on a program and various data stored in the control memory 66 and a signal input from the I / O unit 70, time measurement, And the calculation is performed.

  The I / O unit 70 and the inverter that drives the pumps 30A and 30B are connected to each other by communication means such as RS422, 232C, and 485. Control signals such as various setting values, frequency command values, start / stop signals (operation / stop signals) are sent from the I / O unit 70 to the pumps 30A and 30B to the inverter, and the I / O unit 70 is supplied from the pumps 30A and 30B. The operation status (operation information) such as the actual frequency value and current value is sequentially sent from the inverter.

  An analog signal and / or a digital signal can be used as a control signal transmitted and received between the I / O unit 70 and the inverter that drives the pumps 30A and 30B. For example, an analog signal can be used for the rotation frequency or the like, and a digital signal can be used for the operation stop command or the like. Further, when the variable speed control of 30A and 30B is not performed, the inverter may not be provided.

  The communication unit 73 is configured to be able to communicate with the external display device 80 by wired communication or wireless communication. As the wireless communication, for example, a near field communication (NFC) technology can be used. In addition, wireless communication of an arbitrary system such as Bluetooth (registered trademark) and Wi-Fi can be used. However, NFC is advantageous in that communication can be completed simply by bringing the control unit 65 and the external display device 80 close to each other. As the wired communication, for example, the control unit 65 may be provided with an external connection terminal such as a USB (Universal Serial Bus), and the external display device 80 may be connected to the external connection terminal. Serial communication such as 232C, 485 may be used.

  In the present embodiment, a simple indicator such as a 7-segment LED and an indicator lamp can be used as the display unit 72. However, the display unit 72 is not limited to such an example, and may be a liquid crystal display using a dot matrix method. Further, as the external display 80, a high-function display on a liquid crystal screen using a touch input method or a push button method can be adopted. In this case, simple information can be displayed on the display unit 72, and a large amount of information can be displayed on the external display device 80. With this configuration, information related to the operation status of the pumps 30A and 30B by the control unit 65 (for example, the target pressure SV, the current pressure PV, the operation / stop of the pumps 30A and 30B, and the pumps 30A and 30B) By displaying the frequency of 30B on the same screen, a user who is not familiar with the water supply apparatus can recognize the state of the water supply apparatus 10 or change the setting without misunderstanding. Moreover, the water supply apparatus 10 may be installed in an environment with much electrical noise such as a machine room or a pump room. In preparation for such a case, as the display unit 72, a display unit configured by a 7-segment LED, a display lamp, a mechanical press button, or the like that is more resistant to electrical noise than a liquid crystal display or a touch panel may be used. Thereby, even when an abnormality occurs in the liquid crystal display or touch panel operation of the external display device 80 due to electrical noise generated from the external environment, the minimum display and operation necessary for the operation of the water supply apparatus 10 by the display unit 72. It can be performed. Therefore, the water supply apparatus 10 can be installed even in an environment with a lot of electrical noise.

  Furthermore, when a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, or a tablet is adopted as the external display device 80, dedicated application software for acting as the external display device 80 is applied to these devices. It may be installed. In this case, a plurality of dedicated application software may be prepared according to the user level or purpose.

  In addition, the operation panel 79 or the display unit 72 may not be provided in the control unit 65, and only the external display (high function display) 80 may be provided. In this case, all the functions of the operation panel 79 described above can be performed by the external display device 80. Since it is not necessary to provide the indicator itself in the water supply apparatus 10, it is possible to further reduce the cost of the water supply apparatus 10 as a whole.

  Next, water supply control (automatic operation mode) of the water supply apparatus 10 by the control unit 65 will be described. When the discharge-side pressure is reduced to a predetermined starting pressure while the pumps 30A and 30B are stopped, the control unit 65 starts at least one of the pumps 30A and 30B. Specifically, the control unit 65 issues a command to the motor units 33A and 33B (inverter when an inverter is provided) to start driving the pumps 30A and 30B. During the operation of the pumps 30A and 30B, control such as estimated terminal pressure constant control or target pressure constant control is performed by the set pressure (set pressure). Specifically, in the case of the estimated terminal pressure constant control, the target pressure (SV) is set using the rotation speed of the pumps 30A and 30B and the target pressure control curve, and in the case of the constant target pressure control, the set pressure is set to the target pressure ( SV). Moreover, let discharge side pressure be present pressure (PV). Then, PID calculation is performed based on the deviation between SV and PV, and command rotational speeds of pumps 30A and 30B are set. In addition, when performing the estimated terminal pressure constant control with directly connected water, the target pressure control curve may be corrected based on the suction side pressure. Specifically, the target pressure control curve is added only by the suction side pressure, and the target pressure (SV) is calculated. In addition, when there are a plurality of pumps as in the present embodiment, the control unit 65 also controls the number of pumps according to the amount of water by the number of pumps that can be activated simultaneously (the number of pumps in parallel operation).

  When the use of water in the building is reduced during the operation of the pumps 30A and 30B, the flow switches 49A and 49B detect an excessive amount of water and send the detection signal to the control unit 65. The control unit 65 receives this detection signal, issues a command to the pumps 30A and 30B, increases the rotation speed of the pumps 30A and 30B until the discharge side pressure reaches a predetermined operation stop pressure, and accumulates the pressure in the pressure tank 50 before pumping 30A and 30B are stopped (small water amount stop). When water is used again in the building after the pumps 30A and 30B have stopped for a small amount of water, the discharge side pressure drops below the starting pressure and the pumps 30A and 30B are started. In addition, when there are a plurality of pumps as in this embodiment, it is preferable to rotate the pumps 30A and 30B to be started to prevent water from staying in the pumps 30A and 30B. Further, as a method for detecting the small amount of water, other means such as a low load or a cutoff pressure due to the current values of the motor units 33A and 33B may be used without using the flow switches 49A and 49B.

  FIG. 5 is a flowchart illustrating an example of setting information change processing executed by the control unit. The setting information change process of this embodiment is started when communication between the water supply apparatus 10 and the external display device 80 is established. Here, the control unit 65 may determine whether to establish communication with the external display device 80 by referring to the change restriction information for limiting the change of the setting information by the external display device 80. Specifically, when the change of the setting information is prohibited by the change restriction information, the communication request from the external display device 80 is rejected, and the process of FIG. 5 is not performed.

  When starting the setting information changing process, the control unit 65 first determines whether or not the operation display unit (operation panel) 79 is in the setting mode (step S100). The setting mode indicates a state in which the user is changing the setting using the operation display unit 79. For example, the setting mode is selected when the user presses the setting button 75 for a predetermined time (for example, 1 second). Next, in step S105, the control unit 65 confirms whether or not authentication by the other external display device 80 is performed according to the state of the input permission flag Fp. The input permission flag Fp is a flag indicating that authentication is in progress. Now, consider a case where the operation display unit 79 is not in the setting mode and the other external display device 80 is not authenticated.

When the operation display unit 79 is not in the setting mode (S100: No) and the input permission flag Fp is 0 (S105: Yes), the control unit 65 determines whether or not to authenticate the communicating external display device 80. Determination is made (step S110). The process of step S110 is a process of confirming whether or not the external display device 80 that has transmitted the setting information change command (setting input) has an appropriate authority that satisfies a predetermined condition. It is determined that the external display device 80 is authenticated when a predetermined password is received. When the external display 80 cannot be authenticated (S110: No), the control unit 65 ends the setting information change process as it is. In addition, when the external display device 80 is not authenticated, or when the external display device 80 is not authenticated for a predetermined number of times (for example, three times), the control unit 65 has confirmed that unauthorized access to the water supply device 10 has been confirmed. You may judge. At this time, the control unit 65 may set the change restriction information so that the change is restricted for at least a part of the setting information.

  Note that the authentication unit in step S110 is not limited to a unit using communication with the external display device 80. The control unit 65 may authenticate the external display device 80 by a predetermined operation in the operation display unit 79 or the like. In that case, the processing of step S100 and step S105 may be omitted. As an example, the user may authenticate the external display device 80 by performing a predetermined operation such as inputting a password or device information unique to the external display device 80 using the operation display unit 79. Alternatively, a switch or button for permitting communication by the external display 80 may be provided on the substrate of the control unit 65 or the setting unit 71, or an operation procedure may be provided. By providing authentication means by operating these water supply apparatuses 10, even if the application software of the external display device 80 is forged by a third party, setting input is permitted as long as the operation of the water supply apparatus 10 is not authenticated. Means not. These authentication methods may be classified into levels for each user who operates the external display device 80 (for example, a general user, a maintenance worker, etc.). For example, authentication of setting information that can be changed by a general user is performed by application software of an external display, and authentication of setting information that can be changed only by a maintenance worker is an authentication means using the operation display unit 79. . By separating the rewritable setting information for each user level, setting errors of the setting information of the water supply apparatus 10 can be prevented and security for setting input can be improved.

  When authenticating the external display device 80 (S110: Yes), the controller 65 sets a value 1 to the input permission flag Fp (step S120), resets the permission time counter Cp, and starts timekeeping (step S130). . Thereby, the control part 65 will be in a setting input permission state. The permission time counter Cp is a time value indicating the time after the external display device 80 is authenticated, that is, the time after the control unit 65 is set in the input permission state.

  Subsequently, the control unit 65 determines whether or not a setting change is requested from the external display device 80 (step S140). Now, consider a case where a setting change is requested from the external display device 80. When the setting change is requested (S140: Yes), the control unit 65 determines whether or not the setting change request is appropriate (step S150). For example, the control unit 65 determines whether or not the setting change request is within an allowable range in which setting information change is allowed. This allowable range may be, for example, at least one of an upper limit value and a lower limit value that are allowed as the set value, or may be an upper limit value of the change amount that is allowed to be changed from the currently stored set value. Further, the control unit 65 may determine whether or not the signal received from the external display device 80 conforms to a predetermined encoding rule. Examples of this determination include error detection using a parity bit or a checksum. In addition, the control unit 65 may determine whether or not the synchronization codes of the signals received from the external display device 80 match and whether or not an abnormality has occurred in communication with the external display device 80.

  Further, the control unit 65 may determine that the setting change request is not appropriate when the setting information whose change is restricted by the change restriction information is requested to be changed. In particular, when a change of a plurality of setting information is requested when some changes of the setting information are restricted by the change restriction information, the change request for the setting information for which the change is restricted is not appropriate. It may be determined that a change request for setting information that is not restricted is appropriate. Thereby, change of some setting information is restricted by change restriction information, and change of the remaining setting information is permitted.

  When the setting change request from the external display device 80 is not appropriate (S150: No), the control unit 65 determines whether or not the determination of appropriateness has not been made continuously for a predetermined number of repetitions (for example, 10 times). (Step S160). When the inappropriate determination is less than the predetermined number of repetitions (S160: No), the control unit 65 determines that there is a temporary communication error, returns to the process of step S140, and changes the setting from the external display unit 80. Receive the request. On the other hand, when the inappropriate determination continues for the predetermined number of repetitions (S160: Yes), the control unit 65 determines that the change of the setting information from the external display device 80 cannot be accepted, and sets the value 0 to the input permission flag Fp. After setting (step S180), the setting information changing process is terminated. Thereby, the setting input from the external display device 80 is not accepted, and the input permission state of the control unit 65 is released.

  When the setting change request from the external display device 80 is appropriate (S150: Yes), the control unit 65 stores the setting information in the control memory 66 (step S160). Subsequently, the control unit 65 compares the permission time counter Cp with the reference value Cref (step S170). When the permission time counter Cp is equal to or smaller than the reference value Cref (S170: No), the control unit 65 returns to the process of step S140 again and determines whether a setting change is requested from the external display device 80. The process in step S170 is a process for determining whether or not a predetermined time (for example, several seconds) has elapsed since the external display device 80 was authenticated. Then, until the predetermined time elapses, the setting information change command from the external display device 80 is accepted again without performing authentication again. Thereby, the frequency | count of communication required for the procedure of the authentication with the water supply apparatus 10 and the external indicator 80 can be reduced, and the efficiency of communication can be achieved. However, the present invention is not limited to this example, and the control unit 65 may perform an authentication process on the external display device 80 every time the setting information is changed and stored.

  When a plurality of setting information change commands are issued from the external display device 80, the control unit 65 repeatedly executes the processes of steps S140 to S170. When the setting change request is not made from the external display device 80 (S140: No), the control unit 65 proceeds to step S170 and compares the permission time counter Cp with the reference value Cref. When the permission time counter Cp exceeds the reference value Cref (S170: Yes), the control unit 65 sets a value 0 to the input permission flag Fp (step S180) and ends the setting information change process. Thereby, when a predetermined time has elapsed since the external display device 80 was authenticated, the authentication of the external display device 80 is canceled.

  Each time the setting is changed normally in step S160, the permission time counter Cp may be reset to restart the time measurement. By doing so, even when a large number of set values are changed continuously, authentication can be maintained until the set value change is completed without the allowed time counter Cp counting up during the setting change.

  When the operation display unit 79 is in the setting mode in the process of step S100 (S100: Yes), the control unit 65 ends the setting information change process as it is. Thereby, when the setting information is changed on the operation display unit 79, the external display device 80 is not authenticated, so that it is possible to prevent the setting information from being changed from the external display device 80. When the input permission flag Fp is 1 in the process of step S110 (S105: No), it is determined that the input permission state has already been made by another external display device, and the authentication request of the external display device 80 is accepted. Therefore, it is possible to prevent the setting inputs from the plurality of external displays 80 from being accepted. Here, in this embodiment, since the authentication of the external display 80 is canceled when a predetermined time has elapsed since the external display 80 was authenticated, something other than the external display 80 that has been authenticated for a long time. It is possible to prevent the state in which the change of the setting information in the means is not accepted from being continued.

  Further, when the operation display unit 79 is in the setting mode in the process of step S100 (S100: Yes), the control unit 65 may notify the external display device 80 of the setting mode. The external indicator 80 may notify the user that the setting is not possible when the notification indicating the communication unit setting mode is received from the water supply device 10. Further, the external display device 80 may display the state of the permission flag Fp and the state of the permission time counter Cp. By doing so, the user of the external display device 80 can confirm the state of the water supply apparatus 10.

  Next, control when the operation display unit (operation panel) 79 of the present embodiment is operated will be described. FIG. 6 is a flowchart illustrating an example of processing related to setting of the operation display unit executed by the control unit. The operation display unit setting process is started when the operation display unit 79 is operated by the user.

  When the operation display unit setting process is started, the control unit 65 first determines whether or not the input permission flag Fp is 0 (step S200). As described above, the input permission flag Fp is set to a value of 1 when a setting input is received from the external display device 80 and the external display device 80 is authenticated.

  When the input permission flag Fp is 0 (S200: Yes), the control unit 65 determines that the setting input by the external display device 80 is not performed, and validates the operation of the operation display unit 79 (step S210). . Subsequently, the control unit 65 determines whether or not the setting mode is requested by pressing the setting button 75 for a predetermined time (step S220). When the setting mode is not requested (S220: No), the operation display unit setting process is terminated as it is, and when the setting mode is requested (S220: Yes), the operation display unit 79 is set to the setting mode ( Step S230), the operation display unit setting process is terminated. By setting the operation display unit 79 to the setting mode, the user can change the setting information by operating the operation display unit 79. At this time, in the process of step S100 of the setting information change process of FIG. 5 described above, it is determined that the operation display unit 79 is in the setting mode, and the setting input from the external display unit 80 is not accepted.

  When the input permission flag Fp is 1 in step S200 (S200: No), the control unit 65 invalidates the operation of the operation display unit 79 (step S240). Thereby, when setting information is changed by the external indicator 80, it can suppress that the operation display part 79 is operated and the water supply apparatus 10 malfunctions. Here, the control unit 65 disables the operation of the operation display unit 79, and when a switch (not shown) such as a toggle switch or a push switch of the operation display unit 79 is operated, the external display 80 After the input permission state by is released, control based on the operation of the switch may be performed. By such control, even if the switch of the operation display unit 79 is operated when the setting information is changed by the external display device 80, it is possible to prevent the water supply apparatus 10 from performing an unintended operation.

  In addition, when the input permission flag Fp is 1, the control unit 65 displays that the input is permitted by the external display device 80 on the operation display unit 79 (step S250), and ends the operation display unit setting process. . The display on the operation display unit 79 may be arbitrary. For example, a symbol imitating “Con” may be displayed on a 7-segment LED (not shown) of the display unit 72. Thereby, the user operating the operation display unit 79 can recognize that the input is permitted by the external display device 80.

In the configuration of FIG. 4, an operation unit (not shown) or a memory (not shown) may be additionally provided in the operation display unit 79. The communication unit 73 may be additionally provided with a calculation unit (not shown) and a memory (not shown). In that case, the processing of FIGS. 5 and 6 may be performed by any arithmetic unit. By distributing the calculation unit to a plurality of units, for example, processing related to water supply is performed in the calculation unit 69, authentication processing with the external display device 80 is performed in the calculation unit of the communication unit, and processing related to display operation is performed on the display unit It is good to carry out in the operation part. As a result, the number of processes that can be processed simultaneously increases, and the processing speed is improved. Moreover, various setting values and various information related to the water supply apparatus 10 may be stored in any storage unit, or may be stored in a plurality of memories. Thereby, even when any one of the plurality of memories is damaged, it is possible to restore various setting values and various information related to the water supply apparatus 10 using information of the memory that operates normally.

  As another configuration of FIG. 4, the calculation unit 69 and the control memory 66 may be provided in the operation display unit 79, may be provided in the communication unit 73, or the operation display unit 79 and the communication unit 73 are controlled by the control unit. It is good also as a structure connected by communication or a bus | bath as 65 and another board | substrate.

(Modification)
FIG. 7 is a diagram showing a modified control unit and an external display. In the modification, the communication unit 73 includes a control unit side antenna unit 76 and an integrated circuit 77. The integrated circuit 77 is electrically connected to the control unit side antenna unit 76 and the storage unit 78. The control unit 65A illustrated in FIG. 7 does not include the display unit 72, but may include the display unit 72. Moreover, the control part 65A of a modification may be provided integrally with other structures of the water supply apparatus 10 such as the pumps 30A, 30B, or the water supply apparatus 10 as a device for relaying data of the water supply apparatus 10. It may be provided apart from other configurations.

  The external display device 80 according to the modification includes a display-side antenna unit 81 that transmits and receives radio waves, a display unit 82, a battery 83, and a data reader 84. In the external display 80, data received by the display-side antenna unit 81 is read by the data reader 84. Then, data read by the data reader 84 (for example, the target pressure SV, the current pressure PV, the frequencies of the pumps 30A and 30B, etc.) is displayed on the display unit 82. The battery 83 supplies power to the display-side antenna unit 81, the data reader 84, and the display unit 82.

  As the external display device 80, for example, a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, or a tablet may be used, or a dedicated terminal device such as a remote monitor may be used. In particular, if a general-purpose terminal device such as a smartphone is used as an external display, the cost of producing a dedicated display can be reduced, so that the cost of the water supply device can be reduced. In addition, since a plurality of users can display or set the state of the water supply device 10 on each general-purpose terminal device, it is possible to provide a display operation in accordance with the level or purpose of the user. For example, it is possible to provide an inexpensive water supply apparatus that can inform a user who does not have specialized knowledge about a water supply apparatus such as a manager of a condominium or a building in an easy-to-understand manner regarding information related to the control of the pumps 30A and 30B.

The external display device 80 is connected to the control unit 65A by a near field communication (NFC) technology. More specifically, when the display-side antenna unit 81 generates a radio wave in a state where the external display device 80 is close to the control unit 65A, the control-unit-side antenna unit 76 receives the radio wave, and the control-unit-side antenna unit 76 Converts radio waves into electric power. This electric power is supplied to the integrated circuit 77 and the storage unit 78 to drive the integrated circuit 77 and the storage unit 78. When the external display 80 reads the data in the storage unit 78, the integrated circuit 77 reads the data stored in the storage unit 78 based on the communication data included in the radio wave and sends the data to the control unit side antenna unit 76. send. The control unit side antenna unit 76 transmits radio waves together with data to the display unit side antenna unit 81. The data reader 84 reads the data received by the display-side antenna unit 81 and causes the display unit 82 to display the data. When the external display device 80 changes the data in the storage unit 78, the integrated circuit 77 changes the data in the storage unit 78 based on the communication data included in the radio wave, and changes the data to the control unit side antenna unit 76. Send data that means that was executed. The control unit side antenna unit 76 transmits radio waves together with data to the display unit side antenna unit 81. The data reader 84 reads the data received by the display-side antenna unit 81 and displays on the display unit 82 that the data change has been executed.

  The external display device 80 may include a clear button 86 for erasing the display and a reset button (not shown) for resetting data. When the user presses the clear button 86, the display on the display unit 82 is erased. When the reset button is pressed, a reset signal is transmitted to the control unit 65A, and the control unit 65A that has received the reset signal resets data such as maintenance information. The clear button 86 of the present embodiment is a virtual button that appears on the screen of the display unit 82, but the clear button 86 may be a mechanical button provided outside the display unit 82. In addition, you may provide a clear button and a reset button in control part 65,65A of embodiment and a modification.

  In the modification, the data stored in the storage unit 78 of the control unit 65A is transmitted from the control unit 65A to the external display device 80 by wireless communication. According to the modified example, even when the water supply apparatus 10 is not turned on, the control unit side antenna unit 76 generates power from the radio wave emitted from the external display device 80 and drives the integrated circuit 77 and the storage unit 78. Can do. Therefore, even when power is not supplied to the control unit 65A during maintenance of the water supply apparatus 10, the external display device 80 acquires and displays data from the storage unit 78 of the control unit 65A or displays the data in the storage unit 78. Stored data can be changed. At this time, the integrated circuit 77 of the control unit 65A may perform the setting information change process shown in FIG.

  NFC is a technology for mutual communication at a short distance of several centimeters. When the control unit 65A of the modified example is provided integrally with the other configuration of the water supply apparatus 10, when displaying or changing various information on the external display device 80, the user and the maintenance staff can reach a distance that allows mutual communication. The external display device 80 is brought closer to the control unit 65A. This means that when operating the external display 80, the user and maintenance personnel are near the water supply apparatus 10. For this reason, it leads to preventing the unexpected operation | movement of the water supply apparatus 10 resulting from incorrect operation that a reset button is pushed, for example during replacement work of consumables, and a pump starts. In addition, at a site where a plurality of water supply apparatuses 10 are installed, since mutual communication is possible at a short distance of the water supply apparatus 10 that is desired to be displayed, an error display that the state of another unintended water supply apparatus is displayed or set is changed. Or an erroneous operation can be prevented.

  Note that the communication unit 73 of the water supply device 10 of the present embodiment or the modification is a remote monitoring device (for example, a personal computer, a smartphone) provided in a maintenance management company or an administrator room via a public line, a network, a dedicated line, or the like. Or a dedicated monitor), or a communication unit (not shown) for a remote monitoring device may be provided separately. In this case, pump operation information and the like are transmitted to the remote monitoring device from the communication unit 73 or the communication unit for the remote monitoring device. The remote monitoring device may include a display unit that displays the received data. Further, the remote monitoring device may transmit the data received from the water supply device 10 to the external display device 80, or may transmit the state of the water supply device to the remote monitoring device via the external display device 80. Moreover, the external display device 80 and the remote monitoring device may transmit and store data received from the water supply device 10 to an external server. Various data may be written from the remote monitoring device, various data may be written from the external display device to the remote monitoring device, and various data may be written from the remote monitoring device to the water supply device 10. At this time, the water supply apparatus 10 executes the above-described setting information change process when receiving the setting information change command from the remote monitoring device, in the same manner as when receiving the setting information change command from the external indicator 80. Thus, the value 1 may be set in the input permission flag Fp when the remote monitoring apparatus is authenticated.

The device information may include model identification information (for example, model name, model number, etc.) indicating the configuration of the water supply device 10. Moreover, the control part 65 uses the correspondence table memorize | stored beforehand, and is apparatus information (for example, the number of pumps, the output of a pump, the diameter of a pump, and a water supply system at least 1 from the model name). Information). Conversely, the control unit 65 may acquire model identification information of the water supply device based on the device information stored in the storage unit 78. Then, the control unit 65 may display the acquired device information or model identification information on the external display device 80.

  Further, the device information may include a serial number for identifying the individual water supply device 10. Moreover, the external indicator 80 and the remote monitoring device transmit the serial number received from the water supply device 10 to the external server, and device information of the water supply device 10 corresponding to the serial number stored in the external server (for example, the number of pumps) , At least one of the pump output, pump diameter, and water supply method) may be acquired. Then, data may be displayed on the external display device 80 using the acquired device information or model identification information, and further, the setting of the water supply device 10 may be changed from the external display device 80. Furthermore, the water supply apparatus 10 may use a password associated with the serial number when authenticating the external display device 80. The password is stored and managed on the external server, and the external display device 80 acquires the authentication password from the external server every time the setting is changed to the water supply device 10, thereby improving the security in authentication. FIG. 8 is a diagram illustrating an example of a water supply system 90 capable of realizing such contents. In addition, in addition to the water supply system 90, the external indicator 80 is also shown in FIG. The water supply system 90 includes a water supply device 10 and an external server 92. The external server 92 stores individual identification information (model identification information, serial numbers, etc.) of a plurality of water supply apparatuses 10, and stores authentication information (such as an authentication password) and apparatus information in association with the individual identification information. Has been. The external server 92 can communicate with external devices such as the external display device 80 and the remote monitoring device, and transmits the corresponding authentication information and device information to the external device when receiving the individual identification information from the external device.

  Although the embodiments of the present invention have been described above, the above-described embodiments of the present invention are for facilitating the understanding of the present invention and are not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof. In addition, any combination or omission of each constituent element described in the claims and the specification is possible within a range where at least a part of the above-described problems can be solved or a range where at least a part of the effect is achieved. It is.

DESCRIPTION OF SYMBOLS 10 ... Water supply apparatus 20 ... Base 30A, 30B ... Pump 40 ... Discharge piping 45 ... Connection piping 48 ... Pressure sensor 50 ... Pressure tank 60 ... Control panel 65, 65A ... Control part 66 ... Control memory 69 ... Calculation part 70 ... I / O unit 71 ... setting unit 72 ... display unit 73 ... communication unit 76 ... control unit side antenna unit 77 ... integrated circuit 78 ... storage unit 79 ... operation panel 80 ... external display unit 81 ... display unit side antenna unit 82 ... display unit 83 ... Battery 84 ... Data reader 90 ... Water supply system 92 ... External server

Claims (16)

A water supply device for supplying water to a building,
It has a communication unit that can communicate with external devices,
The water supply device determines whether or not the external device satisfies a predetermined condition, and authenticates the external device when it is determined that the external device satisfies the predetermined condition,
The communication unit can communicate various information of the water supply device with the external device when the external device is authenticated,
Water supply device. A setting unit capable of changing various setting information in the water supply device;
The various setting information includes change restriction information for restricting a change based on a signal from the external device for at least a part of the various setting information.
The water supply device can change the various setting information based on a signal from the external device and the change restriction information.
The water supply apparatus according to claim 1. A control unit for controlling the pump;
The setting unit further includes a switch for controlling the water supply device,
The control unit invalidates the operation of the switch when the operation of the switch is performed when the external device is authenticated.
The water supply apparatus of Claim 1 or 2. The water supply device further includes a display unit for displaying various information of the water supply device,
The display unit performs a predetermined display when the communication unit authenticates the external device.
The water supply apparatus as described in any one of Claim 1 to 3. The communication unit does not communicate with an external device different from the authenticated external device when the external device is authenticated,
The water supply apparatus as described in any one of Claim 1 to 4. The water supply device according to any one of claims 1 to 5, wherein the authentication of the external device is canceled when a predetermined time has elapsed since the authentication of the external device. The water supply device permits the setting unit to change the various setting information in a predetermined setting mode, and permits the change of the various setting information based on a signal from the external device when in the predetermined setting mode. do not do,
The water supply apparatus according to any one of claims 1 to 6.   The water supply device according to any one of claims 1 to 7, wherein the communication unit includes a control unit side antenna unit that receives radio waves from the external device and converts the radio waves into electric power.   The water supply device according to any one of claims 1 to 8, wherein the communication unit communicates the various types of information with the external device by near field communication (NFC). A memory for storing individual identification information of the water supply device;
The water supply device authenticates the external device by determining that the external device satisfies the predetermined condition when receiving authentication information corresponding to the individual identification information from the external device.
The water supply apparatus as described in any one of Claim 1 to 9. A water supply apparatus according to claim 10;
An external server that associates and stores the individual identification information of the water supply device and the authentication information, and is communicable with the external device;
With
The external server transmits the authentication information associated with the individual identification information of the water supply device to the external device when receiving the individual identification information of the water supply device from the external device.
Water supply system. The external server stores device information of the water supply device in association with the individual identification information of the water supply device, and when the individual identification information of the water supply device is received from the external device, the individual identification of the water supply device Transmitting device information of the water supply device associated with the information to the external device;
The water supply system according to claim 11. A water supply device for supplying water to a building,
A setting unit capable of changing various setting information in the water supply device;
A communication unit capable of communicating with an external device;
With
The various setting information includes change restriction information for restricting a change based on a signal from the external device for at least a part of the various setting information.
The water supply device can change the various setting information based on a signal from the external device and the change restriction information.
Water supply device. The water supply device does not communicate with the external device regarding the change of the various setting information when the change of the various setting information is restricted by the change restriction information.
The water supply apparatus according to any one of claims 3 to 12 that cites claim 2, or the water supply apparatus according to claim 13. The change restriction information is information that can restrict a change based on a signal from the external device for each piece of the various setting information,
The water supply device can change the information that is not restricted by the change restriction information among the various setting information based on a signal from the external device, and the change restriction information among the various setting information. Information that is restricted from changing is not changed based on a signal from the external device,
The water supply apparatus according to any one of claims 3 to 12, or the water supply apparatus according to claim 13 or 14, which refers to claim 2. The said water supply apparatus sets the said change restriction information so that the change based on the signal from the said external device is restrict | limited about at least one part information of the said various setting information, when the unauthorized communication is made from the said external device. ,
The water supply apparatus according to any one of claims 3 to 12, or the water supply apparatus according to any one of claims 13 to 15, which refers to claim 2.

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