JP6899642B2 - Water supply device - Google Patents

Description

The present invention relates to a water supply device.

Water supply devices are widely used to supply tap water to water supply targets such as buildings. As the water supply method of the water supply device, the water supply tank method in which the water in the water main is temporarily stored in the water receiving tank and the water in the water receiving tank is pressurized to the water supply target by a pump, and the main pressure of the water main are used. A direct 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 pressure of the pump. When the water supply device includes a plurality of pumps, the number of operating pumps is controlled and the starting pumps are controlled according to the amount of water supplied. The pump is controlled by such a control unit based on a set value (setting information) stored in advance in the storage unit according to the installation status of the water supply device and the water supply target.

The setting information of the water supply device may be required to be changed according to the usage situation of the building and the change of the environment. Generally, the setting information is changed by the operation panel provided in the water supply device. However, since the water supply device is usually automatically controlled, there are few opportunities for the operation panel to be operated. Further, the water supply device 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 light which are resistant to electrical noise are used. For this reason, the operation panel has a relatively simplified configuration, and the operation of changing the setting information is infrequent, so that the operation tends to be complicated without emphasizing convenience. In particular, when changing a plurality of setting information, the operation of the operation panel becomes complicated.

In recent years, a water supply device that can be operated by a mobile terminal has been proposed. By operating the water supply device with the mobile terminal, the operation panel of the water supply device can be simplified, and even a user who is unfamiliar with the water supply device can easily operate the water supply device by using the operation unit of the mobile terminal. Can be done.

Japanese Unexamined Patent Publication No. 2005-171788

As described above, when the water supply device can be operated using an external display such as a mobile terminal, the setting of the water supply device can be changed by a simple operation, so the wrong setting is changed and the water supply device is changed. May interfere with the operation of. Therefore, when a problem occurs in the water supply device, it is very effective to refer to the history of setting changes in order to investigate the cause of the problem.

Regardless of the history of setting changes, it is useful for the water supply device to store the history of information related to the operation of the water supply device, such as the history of abnormality detection and the history of pumps, as part of the maintenance and inspection of the equipment. When storing the history of such information, it is effective to store the time information at the time of storing the information together. However, there is a possibility that an error may occur in the time used for controlling the water supply device due to factors such as the environment in which the water supply device is installed and individual differences in the water supply device. Therefore, in order to accurately store the history of information regarding the operation of the water supply device, it is necessary to periodically correct the time used for controlling the water supply device.

Further, in the water supply device, it is expected that the power supply will be cut off during maintenance or in the event of an abnormality such as a lightning strike. In order to update the time information of the water supply device when the power is cut off, a battery that supplies power to the clock of the water supply device is required, which contributes to an increase in the number of parts and cost. In addition, when a battery is provided, regular maintenance and replacement of the battery are also required.

The present invention has been made in view of the above circumstances, and one of the objects of the present invention is to provide a water supply device capable of storing information on the operation of the water supply device together with a more accurate time. Another purpose of such a water supply device is to reduce the number of parts of the device.

(Means 1)
The water supply device of the present invention is a water supply device for supplying water to a building, and includes a communication unit and a control unit. The communication unit is configured to be able to communicate with the external display, can transmit the information of the water supply device to the external display, and can receive the time information from the external display. The control unit stores various information of the water supply device in the storage unit together with the time based on the time information received from the external display.

With such a configuration, the water supply device of the present invention receives time information from the external display when communicating with the external display. This makes it possible to obtain a more accurate time. Then, information on the operation of the water supply device can be stored together with a more accurate time. In addition, even if the battery for updating the time information of the water supply device is not provided when the power is cut off, the time information of the water supply device is received from the external display when communicating with the external display after the power is restored. Can also be corrected. Therefore, the number of parts of the device can be reduced.
Here, the time based on the time information received from the external display may be the time itself received from the external display, or the time measured by the water supply device based on the time received from the external display. There may be. In addition, information on the operation of the water supply device includes setting input related to control of the water supply device, abnormality information on the water supply device, start / stop of the pump, inflow pressure of the pump, discharge pressure of the pump, current value of the motor of the pump, and pump. Includes at least some of the flow information from, pump temperature, and pump speed.

(Means 2)
In the water supply device according to the means 1, various information on the water supply device may include information on the operation of the water supply device. Then, the control unit may set the time of the water supply device based on the time information received from the external display, and may store the information regarding the operation of the water supply device in the storage unit together with the time of the set water supply device.
In this way, the time of the water supply device can be set more accurately based on the time information received from the external display. Further, even if the water supply device does not keep time when the power is cut off, the time of the water supply device can be set by communicating with the external display, and the configuration of the water supply device can be simplified.

(Means 3)
The water supply device according to means 1 or 2, wherein the water supply device may include a storage unit. Then, the storage unit may have a non-volatile storage area for storing the time based on the time information received from the external display together with the information regarding the operation of the water supply device.
In this way, the information stored in the storage unit can be maintained even when the power supply to the water supply device is cut off.

(Means 4)
The water supply device according to any one of means 1 to 3, and the communication unit may be able to receive a setting input for controlling the water supply device. Then, the control unit may store the setting input received from the external display in the storage unit together with the time based on the time information received from the external display as information regarding the operation of the water supply device.
In this way, when the setting input is received from the external display, the history can be stored together with a more accurate time.

(Means 5)
The water supply device according to any one of means 1 to 4, wherein the control unit uses various information of the water supply device such as abnormality information of the water supply device, operation / stop of the pump, inflow pressure of the pump, and discharge of the pump. At least a part of the pressure, the current value of the motor of the pump, the flow rate information from the pump, the temperature of the pump, and the number of rotations of the pump may be stored in the storage unit.

(Means 6)
In the water supply device according to any one of means 1 to 5, the communication unit may have a control unit side antenna unit that receives radio waves from an external display and converts the radio waves into electric power.

(Means 7)
In the water supply device according to any one of means 1 to 6, the communication unit may transmit information to an external display by short-range wireless communication (NFC).

(Means 8)
In the water supply device according to any one of means 1 to 7, the control unit may store a communication record with an external display in the storage unit as various information of the water supply device.

It is a top view which shows an example of the water supply device which concerns on embodiment of this invention. It is a front view which shows an example of the water supply device which concerns on embodiment of this invention. It is a left side view which shows an example of the water supply device 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 timer count processing executed by the control part. It is a flowchart which shows an example of the setting information change processing executed by a control part. It is a figure which shows an example of the abnormality history stored in the control memory. It is a figure which shows an example of the pump operation history displayed on the external display. It is a flowchart which shows another example of the setting information change processing executed by the control part. It is a flowchart which shows an example of the control processing at the time of communication executed by a control part. It is a figure which shows the control part and the external display of the modification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding components are designated by the same reference numerals, and duplicate description will be omitted.

1 to 3 are schematic views showing an example of a water supply device 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 figure, in the water supply device 10, two pumps 30A and 30B and a pressure tank 50 arranged between the pumps 30A and 30B are mounted on the base 20. Further, the water supply device 10 includes a discharge pipe 40 connected to the discharge side of the pumps 30A and 30B, and a control panel 60 installed above 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 supply tank method in which the water in the water main is temporarily stored in the water receiving tank and the water in the water receiving tank is pumped up to the water supply target, and the water main 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 pressure. In addition, as a water supply method to the water supply target, a direct pumping method in which the water boosted by the pump is directly pumped, or a water boosted by the pump is temporarily stored in a tank on the roof and water is supplied by natural flow. There is an elevated water tank system, etc.

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 form L-shaped fixed sides 23, 23.

The pumps 30A and 30B include pump units 31A and 31B, and motor units 33A and 33B for driving them, respectively. Suction parts 35A and 35B for connecting a water receiving tank (not shown) or a supply pipe (not shown) branched from the water main to a water receiving tank or a water supply main, which are not shown, are provided on the front end faces of the pump parts 31A and 31B, and the upper surfaces of the pump parts 31A and 31B. Is provided with discharge portions 37A and 37B. In the case of the direct water supply system, the suction units 35A and 35B are connected to the supply pipe branched from the water main via 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 mains provided in the supply pipe is referred to as "inflow 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 a flow switch 49A and 49B and a check valve (check valve) 47A and 47B. Has been done. A discharge collecting pipe 43 is provided in 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, the check valves 47A and 47B prevent the water in the discharge pipe 40 from flowing back to the pumps 30A and 30B when the pumps 30A and 30B are stopped. Further, a connecting pipe 45 for connecting the discharge pipe 40 to the pressure tank 50 is attached to the lower center of the discharge pipe 40, and a pressure sensor 48 for detecting the pressure inside 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 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 pumps.

The control panel 60 is configured by incorporating a control unit 65 including various electric circuits for controlling the operation of the pump in the case 61. The control unit 65 includes a communication unit 73 that communicates with the external display 80 by wire or wirelessly. As the external display 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 distant monitor is adopted.

FIG. 4 is a schematic block configuration diagram showing 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, an operation panel (operation display unit) 79, and a communication unit 73. It has. The setting unit 71 and the display unit 72 are provided on the operation panel (operation display unit) 79.

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 or wired or wireless communication such as a signal line. When the control unit 65 and the communication unit 73 are used as separate boards, they are installed in a place away from the water supply device 10 (for example, a manager's room, a remote monitoring room, etc.), and the control unit 65 and the control unit 65 are used for serial communication, signal lines, or the like. The communication unit 73 may be configured in the connected remote monitoring device.

The setting unit 71 is used to set various setting values (setting information) necessary for supplying water 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 (setting input) the stop pressure, the starting pressure, and other information necessary for control as setting information via the setting unit 71, and can change the setting information at the installation site. ing.

Further, the setting information may include change restriction information that restricts the change of the setting information by the external display 80. When the change restriction information prohibits the change of the setting information, the setting information cannot be changed from the external display 80. In this case, by changing the change restriction information through the setting unit 71, the change of the setting information (setting input) by the external display 80 is allowed. Thereby, for example, it is possible to prevent a third party from changing the setting information by the external display 80 during the maintenance work. In addition, the water supply device 10 may be installed on the outer wall surface of the condominium or building facing the road, and there is a concern that a third party may use the external display 80 to gain unauthorized access. When these unauthorized accesses are confirmed, the control unit 65 may prohibit the change of the setting information by the external display 80 by changing the change restriction information. Then, the setting input cannot be performed on the external display 80, and unauthorized access by a third party can be prevented. Further, the control unit 65 may prohibit the communication by the external display 80 by the change restriction information. Then, since various information of the water supply device 10 cannot be viewed on the external display 80, the security against unauthorized access is further improved. 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 setting the 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 and change various setting values from the operation display unit 79.

The display unit 72 functions as a user interface, and various data such as set values stored in the control memory 66 or the communication memory 67 and the current operating status (operation information) of the pumps 30A and 30B, for example, the pump 30A. , 30B, respectively, operation or stop, operation frequency, current, inflow pressure, discharge pressure, trip of the inverter driving the motor units 33A, 33B, suction side pressure drop alarm, water receiving tank alarm, etc. are displayed.

The control memory 66 stores a control program for controlling the water supply device 10, device information of the water supply device 10, failure history, operation history, setting information input through the setting unit 71, and the like. Here, the output of the pump may be substituted by the capacity of the motor units 33A and 33B, the capacity of the inverter for driving the motor units 33A and 33B, and the like. Further, when a failure occurs, information such as a failure history and a periodic operation history of the water supply device 10 is also stored in the control memory 66.

As the control memory 66, a ROM, HDD, EEPROM, FeRAM, a non-volatile memory such as a flash memory, and a volatile memory such as RAM are used. In the control memory 66, various data, for example, data of the calculation result in the calculation unit 69 (operating time, integrated value, etc.), pressure value (inflow side pressure, discharge side pressure), setting information input through the setting unit 71, And data and the like input through the I / O section 70 or output through the I / O section 70 are stored.

A port or the like is used as the I / O unit 70. The I / O unit 70 receives the input signal of the pressure sensor 48, the signals of the flow switches 49A and 49B, and the like, and sends them to the calculation unit 69. A CPU is used as the calculation unit 69. The calculation unit 69 sets, clocks, and sets various data for operating the pumps 30A and 30B based on the program and various data stored in the control memory 66 and the signal input from the I / O unit 70. And perform calculations and the like. The output from the calculation unit 69 is input to the I / O unit 70. A clock for timing may be provided in the calculation unit 69, or a CERALOCK, a crystal oscillator, a crystal oscillator, or the like may be provided outside the calculation unit 69 to count the input signal as a clock. Good.

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

An analog signal and / or a digital signal can be used as the control signal transmitted / received between the I / O unit 70 and the inverters driving the pumps 30A and 30B. For example, an analog signal can be used for the rotation frequency and the like, and a digital signal can be used for the operation stop command and 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 80 by wired communication or wireless communication. As wireless communication, for example, near field communication (NFC) technology can be used. In addition, any type of wireless communication such as Bluetooth (registered trademark) and Wi-Fi can be used. However, NFC is advantageous in that communication can be completed only by bringing the control unit 65 and the external display 80 close to each other. Further, as for wired communication, for example, the control unit 65 may be provided with an external connection terminal such as a USB (Universal Serial Bus), and communication may be performed by connecting the external display 80 to the external connection terminal, or RS422. Serial communication such as 232C and 485 may be used.

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

Further, 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 80, dedicated application software for acting as the external display 80 is provided to these devices. You may install it. In this case, a plurality of dedicated application software may be prepared according to the user's level or purpose.

The external display 80 may have a function of holding an accurate time when communicating with the water supply device 10. As an example, the external display 80 may use a device that possesses GPS and further possesses a communication function that periodically acquires the standard time at the current location via a public line, a network, or the like. Then, when communicating with the water supply device 10, it is preferable to use the dedicated application software that communicates with the water supply device 10 described above to refer to this standard time and transmit it to the water supply device. However, in this embodiment, it is sufficient to have an accurate time only when communicating with the water supply device 10, and the method of acquiring the accurate time by the external display 80 is only the automatic acquisition of the standard time described above. Not exclusively. The current time input function may be provided by the dedicated application software, and the user may adjust the time before communicating with the water supply device 10. For example, the water supply device 10 may be installed in a place where radio waves do not reach, such as an underground pump room. Setting the time of the water supply device using the external display 80 means moving the external display outside the pump room to set an accurate time at a place where radio waves can reach. Therefore, the water supply device 10 can have an accurate time.

The control unit 65 may not be provided with the operation panel 79 or the display unit 72, but may be provided with only the external display 80. In this case, all the functions of the operation panel 79 described above can be performed by the external display 80. Since it is not necessary to provide the water supply device 10 with the display itself, the cost of the water supply device 10 as a whole can be further reduced.

Next, the automatic operation in the water supply control of the water supply device 10 by the control unit 65 will be described. When the discharge pressure drops 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 if the inverter is provided) so as 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 constant estimated terminal pressure control, the target pressure (SV) is set using the rotation speeds of the pumps 30A and 30B and the target pressure control curve, and in the case of constant target pressure control, the set pressure is set as the target pressure ( SV). Further, the discharge pressure is set to the current pressure (PV). Then, the PID calculation is performed based on the deviation between SV and PV, and the command rotation speeds of the pumps 30A and 30B are set. When the estimated terminal pressure is constantly controlled by the direct water supply, the target pressure control curve may be corrected based on the inflow pressure. Specifically, the target pressure control curve is added by the inflow pressure to calculate the target pressure (SV). Further, 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 started at the same time (the number of pumps operating in parallel).

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 the insufficient amount of water and send the detection signal to the control unit 65. Upon receiving this detection signal, the control unit 65 issues a command to the pumps 30A and 30B to increase the rotation speed of the pumps 30A and 30B until the discharge pressure reaches a predetermined operation stop pressure, accumulates pressure in the pressure tank 50, and then pumps. Stop 30A and 30B (stop small amount of water). When water is used again in the building after the pumps 30A and 30B are stopped by a small amount of water, the discharge pressure drops to the starting pressure or less and the pumps 30A and 30B are started. When there are a plurality of pumps as in the present embodiment, it is preferable to rotate the starting pumps 30A and 30B to prevent water from staying in the pumps 30A and 30B. Further, as a method for detecting a small amount of water, other means such as a low load due to the current value of the motor units 33A and 33B and a deadline pressure may be used without using the flow switches 49A and 49B.

Next, the memory of the history by the water supply device 10 will be described. In the water supply device 10 of the embodiment, as information related to the operation of the water supply device 10, change history of setting information (set value), abnormality information of the water supply device 10, operation / stop of pumps 30A and 30B, and discharge of pumps 30A and 30B. History of pressure (discharge pressure and inflow pressure in the case of direct water supply system), current value of pumps 30A and 30B (motor units 33A and 33B), flow rate of pumps 30A and 30B, and temperature of pumps 30A and 30B. Is stored in the control memory 66. These histories are stored with the time. If the control memory 66 has a non-volatile storage area, these histories may be stored in the non-volatile storage area.

In the present embodiment, the time stored together with the history is calculated based on the history count Ch set by the control unit 65. FIG. 5 is a flowchart showing an example of timer counting processing executed by the control unit 65. In the timer count process, the control unit 65 waits for the clock to reach a predetermined period and count up (step S100). Then, when the count-up is performed (S100: Yes), the control unit 65 increments the history count Ch (step S102), adds the history count Ch to the reference time T0, and calculates the current time Tc. (Step S103) Waits for the internal clock to be counted up again. The reference time T0 is a time received from the external display and stored in the control memory 66, and will be described in detail later. By such processing, the history count Ch is incremented every time a predetermined period elapses, and the calculated current time Tc is updated. The timer count process is not limited to the example shown in FIG. 5, and may be a process of incrementing the current time Tc by starting each time the clock is counted up.

Here, the predetermined period for incrementing Ch described above may be the minimum unit displayed on the display unit 72. For example, if the time of the year, month, day, hour, and minute is displayed in the history in 1-minute units, the history count Ch is incremented in 1-minute units, and if the history is displayed as the year, month, day in units of days, 1 It is incremented daily. Further, when having a plurality of histories, the history count Ch may be held for each history or for each unit of increment. Further, the display time of each history is set to a unit that is one digit or more larger than the minimum unit of the time that can be acquired from the external display 80. For example, if the minimum unit of time that can be acquired from the external display is the second unit such as year, month, day, hour, minute, and second, the history display may be year, month, day, hour, minute, or year, month, day, and day. By doing so, it is possible to reduce the error between the acquired time data and the displayed time data.

Subsequently, as an example of storing the history by the water supply device 10, the operation when the setting input is made to the water supply device 10 will be described. FIG. 6 is a flowchart showing an example of the setting information change process executed by the control unit 65. This setting information change process is executed when the external display 80 appropriately requests the water supply device 10 to change the setting information and the setting information is changed. When the setting information change process is started, the control unit 65 first changes the setting information according to the setting input from the external display 80 (step S200). At this time, the control unit 65 changes and stores the setting information stored in the control memory 66.

Here, as the change history of the setting information, the change history of the change restriction information described above may be saved. As described above, when unauthorized access is confirmed, the control unit 65 changes the change restriction information. By leaving a history meaning that the change restriction information has been changed by the control unit 65, it is possible to leave a history of unauthorized access. Further, when the control unit 65 determines that the unauthorized access is made from the external display, the time and the identification information of the external display 80 that has been illegally accessed may be recorded in the history as various information of the water supply device 10.

When the setting information is changed, the control unit 65 determines whether or not the time information T1 has been received from the external display 80 for which the setting input has been input (step S202). Here, the control unit 65 may request the external display 80 to transmit the time information T1 when the setting information from the external display 80 is appropriately changed. Further, the time information T1 may be included in the signal for the external display 80 to request the water supply device 10 to change the setting information.

When the control unit 65 receives the time information T1 from the external display 80 (S202: Yes), the control unit 65 stores the change history of the setting information in the control memory 66 together with the time T1 received from the external display 80 (S202: Yes). Step S204). Subsequently, the control unit 65 replaces the reference time T0 with the time information T1 from the external display 80 (step S206), resets the history count Ch to the value 0 (step S208), and ends the setting information change process. To do. As a result, the time information T1 recently received from the external display 80 is set in the reference time T0. In general, an external display 80 such as a mobile terminal often has a function of correcting a time error by using communication as described above, and has relatively accurate time information. There is. Therefore, the water supply device 10 of the present embodiment receives the time information T1 from the external display 80, and stores the history of the information regarding the operation of the water supply device 10 together with the received time T1. As a result, the history information of the water supply device 10 can be stored together with a more accurate time regardless of the accuracy of the clock of the calculation unit 69.

When the control unit 65 does not receive the time information T1 from the external display 80 (S202: No), the control unit 65 stores the change history of the setting information in the control memory 66 together with the calculated current time Tc. Then (step S210), the setting information change process is terminated. As described above, the time T1 recently received from the external display 80 is set in the reference time T0, and the current time Tc is calculated based on the reference time T0. By such processing, even when the time information T1 is not received from the external display 80, the history information of the water supply device 10 can be stored together with a more accurate time based on the reference time T0.

In the present embodiment, even when the setting is changed by the setting input means other than the external display 80, the change history can be stored using the calculated time Tc. For example, when inputting settings from the operation panel 79, the user saves the trouble of inputting time information, records change information at the time Tc calculated by calculation, and inputs settings from the external display 80. The exact time T1 is received and the time T1 is used for the history. In this way, when the presence or absence of the time setting is determined by the input means, the information of which means the setting is input (the setting input from the operation panel 79 or the setting input from the external display 80, etc.) is recorded as history information. May be added to.

As described above, since the water supply device 10 of the present embodiment receives the time information T1 from the external display 80 and sets the reference time T0, it is possible to hold the calculated time Tc more accurately. Even if the clock of the calculation unit 69 oscillates abnormally due to the influence of noise or the like and the error of the calculated time Tc becomes large, the control unit 65 corrects the calculated current time Tc every time the accurate time T1 is received. Means that you can. Further, even if the time is not measured when the power to the water supply device 10 is cut off, the accurate time can be obtained by receiving the time information T1 from the external display 80 after the power is restored. Therefore, the configuration may not include a battery for timing, and the configuration of the water supply device 10 can be simplified.

FIG. 7 is a diagram showing an example of the abnormality history of the water supply device 10 stored in the control memory 66. In the present embodiment, when it is determined that an abnormality has occurred, the water supply device 10 stores the detected abnormality in the control memory 66 together with the time when the abnormality occurs. For this abnormality occurrence time, the time Tc calculated in FIG. 5 described above is used. In the example shown in FIG. 7, each time an abnormality is detected, the time Tc calculated at that time and the content of the abnormality are stored as an abnormality history.

Here, the history No. The abnormality in 4 is that the power is restored after the power supply of the water supply device 10 is cut off, and the reference time T0 is set because the abnormality of the water supply device 10 occurs when the time information T1 is not yet received from the external display 80. It shows an example in which the abnormal occurrence time in the date and time column is not stored. In this state, when displaying the abnormality history by some display means, the time data such as "--year--month--day--hour--minute" is displayed in the date and time column as shown in Fig. 7. It is recommended to use a special display that allows you to visually recognize that you do not have it.

The control unit 65 is No. No. 4 is counted by counting the elapsed time Cn from the time when the abnormality occurs, and when the time information T1 is received from the external display 80, the elapsed time Cn is subtracted from the received time information T1. The abnormality occurrence time Tn of 4 may be calculated. Further, as the history information, the calculated time Tn may be displayed on the external display 80 or the display unit 72, or may be stored in the control memory 66. When there is a request to display the abnormality history on the external display 80, the control unit 65 first receives the time information T1 from the external display 80, calculates Tn, and then displays the abnormality history on the external display 80. You can send it to. By doing so, the time data Tn can always be displayed when the abnormality history is displayed on the external display 80.

The history information stored in the control memory 66 may be transmitted to the external display 80 so that it can be displayed on the liquid crystal screen of the external display 80 or the like. FIG. 8 is a diagram showing an example of a pump operation history displayed on the external display 80. In the example shown in FIG. 8, the external display 80 shows the pump operation history with the horizontal axis representing the time and the vertical axis representing the discharge side pressure (solid line) and the inflow side pressure (broken line) of the pumps 30A and 30B. In this case, the water supply device 10 is a direct water supply system. In the water supply device 10, generally, the usage amount of the water supply destination and the operating status of the pumps 30A and 30B can be grasped from these pressure values. In the water supply device 10 of the present embodiment, the time Tc calculated in FIG. 5 described above may be stored together with the pump operation history. Then, as shown in FIG. 8, the discharge pressure and the inflow pressure of the pumps 30A and 30B are displayed in chronological order using the calculated time Tc, and the user can display the pump operation history more accurately. You can check the information. The pump operation history may be stored in the control memory 66 at arbitrary periods, and the frequency of storage may be set by changing the setting information or the like. Further, similarly to the failure history described with reference to FIG. 7, the time Tp may be set retroactively for the past pump operation history in which the reference time T0 does not exist.

FIG. 9 is a flowchart showing another example of the setting information change process executed by the control unit. In the setting information change process shown in FIG. 9, steps S209 and 210a are executed in place of the process in step S210 for the setting information change process shown in FIG. When the control unit 65 has not received the time information T1 from the external display 80 (S202: No), the elapsed time since the last time the time information T1 was received from the external display 80 based on the history count Ch. Is calculated (step S209). Then, the control unit 65 stores the change history of the setting information in the control memory 66 together with the calculated elapsed time (step S210a), and ends the setting information change process. That is, in the setting information change process of FIG. 9, when the time information T1 is received from the external display 80, the received time is stored, and then the elapsed time since the last time information T1 was received from the external display 80. Is remembered. In such a process as well, as in the setting information change process shown in FIG. 6, the history of information related to the control of the water supply device 10 can be stored together with an accurate time.

In the configuration of FIG. 4, an arithmetic unit (not shown) and a memory (not shown) may be additionally provided in the operation display unit 79. Further, a calculation unit (not shown) and a memory (not shown) may be additionally provided in the communication unit 73. In that case, the processing of FIGS. 5 and 6 may be performed by any arithmetic unit. By distributing the arithmetic units to a plurality of units, for example, the arithmetic unit 69 executes the processing related to water supply, the arithmetic unit of the communication unit executes the communication data processing to the external display 80, and displays the processing related to the display operation. It is preferable to carry out in the calculation part of the part. As a result, the number of processes that can be processed at the same time increases, and the processing speed is improved. Further, various setting values and various information related to the water supply device 10 may be stored in any storage unit, or may be stored in a plurality of memories. As a result, even if any one of the plurality of memories is damaged, the information related to the water supply device 10 can be recovered by using the 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, the communication unit 73, or the operation display unit 79 and the communication unit 73 may be provided in the control unit. It may be configured to be connected to the 65 by communication or a bus as a separate board. Further, the memory may be only a volatile memory or may include a non-volatile memory.

(Modification example 1)
FIG. 10 is a flowchart showing an example of communication control processing executed by the control unit 65. This communication control process is performed in parallel with the process of FIG. 5, and is executed by the control unit 65 when the communication unit 73 of the water supply device 10 communicates with the external display 80. When communication with the external display 80 is made, first, the control unit 65 determines whether or not the time information T1 has been received from the external display 80 (step S300), and outputs the time information T1 from the external display 80. When receiving (S300: Yes), the reference time T0 is replaced with the received time T1 (step S302), the history count Ch is reset to the value 0 (step S304), and the communication control process is terminated. .. When the time information T1 is not received from the external display 80 (S300: No), the control unit 65 ends the communication control process as it is. The control unit 65 may request the external display 80 to transmit the time information T1 when the communication with the external display 80 is established. Further, when establishing communication with the external display 80, or when authenticating the external display 80 by receiving a password from the external display 80, the time information T1 is transmitted from the external display 80 to the water supply device 10. It may be transmitted. As described above, in the communication control process shown in FIG. 10, the water supply device 10 receives the time information T1 when communicating with the external display 80 and corrects the reference time T0, so that the water supply device 10 is calculated. The time Tc can be set to a more accurate time.

As described above, also in the communication control process of FIG. 10, the water supply device 10 obtains more accurate time calculated from the information related to the control of the water supply device 10 based on the time information T1 received from the external display 80. It can be stored together with Tc. In addition, when this modification is used, only step S200 and step S210 may be performed in the setting information change processing of FIG.

(Modification 2)
FIG. 11 is a diagram showing a control unit and an external display of a modified example. In this modification, the communication unit 73 includes a control unit side antenna unit 76, an integrated circuit 77, and a storage unit 78. The storage unit 78 includes a volatile memory (not shown) for communication and a non-volatile memory (not shown). The integrated circuit 77 is electrically connected to the control unit side antenna unit 76 and the storage unit 78. Although the control unit 65A shown in FIG. 11 does not include the display unit 72, the control unit 65A may include the display unit 72. Further, the control unit 65A of the modified example may be provided integrally with other configurations of the water supply device 10 such as the pumps 30A and 30B, or the water supply device 10 as a device for relaying the data of the water supply device 10. It may be provided apart from other configurations.

The external display 80 of the modified example includes a display unit side antenna unit 81 for transmitting and receiving radio waves, a display unit 82, a battery 83, and a data reader 84. In the external display 80, the data received by the display side antenna unit 81 is read by the data reader 84. Then, the 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. It is also possible to change various set values of the water supply device 10 from the external display 80. The battery 83 supplies electric power to the display unit 81, the data reader 84, and the display unit 82.

As the external display 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. Further, since a plurality of users can display the status of the water supply device 10 on each general-purpose terminal device and change the settings, it is possible to provide an operation according to the user's level or purpose. .. For example, it is possible to inexpensively provide a water supply device that can easily inform a user who does not have expertise in the water supply device such as a condominium or building manager about information related to the control of the pumps 30A and 30B.

The external display 80 is connected to the control unit 65A by the technology of Near Field Communication (NFC). More specifically, when the display unit side antenna unit 81 generates a radio wave while the external display 80 is brought 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 of 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 outputs the data to the antenna unit 76 on the control unit side. send. The control unit side antenna unit 76 transmits radio waves together with the data to the display unit side antenna unit 81. The data reader 84 reads the data received by the display unit 81 and causes the display unit 82 to display the data. When the external display 80 changes the data of the storage unit 78, the integrated circuit 77 changes the data of the storage unit 78 based on the communication data included in the radio wave, and changes the data to the antenna unit 76 on the control unit side. Sends data that means that has been executed. The control unit side antenna unit 76 transmits radio waves together with the data to the display unit side antenna unit 81. The data reader 84 reads the data received by the display unit side antenna unit 81, and causes the display unit 82 to display that the data change has been executed.

The external display 80 may include a clear button 86 for erasing the display and a reset button (not shown) for resetting the 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 receives 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. A clear button and a reset button may be provided on the control units 65 and 65A of the embodiments and modifications.

In the modified example, the data stored in the storage unit 78 of the control unit 65A is sent from the control unit 65A to the external display 80 by wireless communication. According to the modified example, even when the power supply device 10 is not turned on, the control unit side antenna unit 76 generates electric power from the radio waves emitted from the external display 80 to drive the integrated circuit 77 and the storage unit 78. Can be done. Therefore, even when power is not supplied to the control unit 65 during maintenance of the water supply device 10, the external display 80 acquires data from the storage unit 78 of the control unit 65 and displays it, or displays the data in the storage unit 78. The stored data can be changed. At this time, the integrated circuit 77 of the control unit 65A may perform the setting information change processing shown in FIG. 5 and store the setting change history and the time information T0 in the storage unit 78.

NFC is a technology for mutual communication at a short distance of several cm. When the control unit 65A of the modified example is provided integrally with other configurations of the water supply device 10, when displaying or changing various information on the external display 80, the user and the maintenance staff can communicate with each other up to a distance. The external display 80 will be brought closer to the control unit 65A. This means that the user and the maintenance personnel are near the water supply device 10 when operating the external display 80. For this reason, it is possible to prevent unexpected operation of the water supply device 10 due to an erroneous operation such as the reset button being pressed and the pump being started during the replacement work of consumables. In addition, at the site where a plurality of water supply devices 10 are installed, mutual communication is possible at a short distance of the water supply device 10 to be displayed, so that an erroneous display that the state of another water supply device is unintentionally displayed or the setting is changed is erroneously displayed. Alternatively, erroneous operation can be prevented.

The communication unit 73 of the water supply device 10 of the present embodiment or the modified example is a remote monitoring device (for example, a personal computer, a smartphone) provided in a maintenance company or a manager's room via a public line, a network, a dedicated line, or the like. Or, it may communicate with a dedicated monitor). In this case, the pump operation information, the change history of the setting information, the abnormality history of the water supply device 10, and the like are transmitted from the communication unit 73 to the remote monitoring device. The remote monitoring device may include a display unit that displays received data. Further, the remote monitoring device may transmit the data received from the water supply device 10 to the external display 80. Further, the external display 80 and the remote monitoring device may transmit the data received from the water supply device 10 to an external server and store it. Further, various data may be written from the remote monitoring device, various data may be written from the external display 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 device 10 changes the setting information described above when it receives a command for changing the setting information from the remote monitoring device or when it communicates with the remote monitoring device, as in the case of communicating with the external display 80. The time information T0 may be received from the remote monitoring device by executing the process or the control process during communication.

Various history information stored in the storage unit 78 by the water supply device 10 of the present embodiment or the modified example may be shared with the control memory 66. For example, when the information written in the storage unit 78 when the water supply device 10 is turned off is copied to the control memory 66 after the power is restored to the water supply device 10, various history information of the control memory 66 is changed while the power supply device 10 is energized. May be copied to the storage unit 78. However, the copying is not limited to such timing, and the values of the control memory 66 and the storage unit 78 may match.

Although the embodiments of the present invention have been described above, the above-described embodiments of the invention are for facilitating the understanding of the present invention and do not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes an equivalent thereof. In addition, any combination or omission of the claims and the components described in the specification is possible within the range in which at least a part of the above-mentioned problems can be solved, or in the range in which at least a part of the effect is exhibited. Is.

10 ... Water supply device 20 ... Base 30A, 30B ... Pump 40 ... Discharge pipe 45 ... Connecting pipe 48 ... Pressure sensor 50 ... Pressure tank 60 ... Control panel 65, 65A ... Control unit 66 ... Control memory 67 ... Communication memory 68 ... Non-volatile memory 69 ... Calculation unit 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 81 … Display side antenna part 82… Display part 83… Battery 84… Data reader

Claims (9)

A water supply device for supplying water to a building
It is configured to be able to communicate with an external display, such as abnormality information of the water supply device, start / stop of the pump, inflow pressure of the pump, discharge pressure of the pump, current value of the motor of the pump, and the above. Water supply device information including at least a part of the flow rate information from the pump, the temperature of the pump, and the rotation speed of the pump can be transmitted to the external display, and time information can be received from the external display. With the communication department
A history of the water supply instrumentation置情paper, and a control unit to be stored in the storage unit together with the time based on the time information received from the external display unit,
Equipped with a,
The control unit sets the time of the water supply device based on the time information received from the external display.
The time stored together with the history of the water supply device information is calculated based on the clock count by the control unit.
Water supply apparatus. The control unit is characterized in that the communication record with the external display is stored in the storage unit as the water supply device information.
The water supply device according to claim 1. A water supply device for supplying water to a building
It is configured to be able to communicate with an external display, such as abnormality information of the water supply device, start / stop of the pump, inflow pressure of the pump, discharge pressure of the pump, current value of the motor of the pump, and the above. Water supply device information including at least a part of the flow rate information from the pump, the temperature of the pump, and the rotation speed of the pump can be transmitted to the external display, and time information can be received from the external display. With the communication department
A control unit that stores the water supply device information in the storage unit together with a time based on the time information received from the external display.
With
The control unit sets the time of the water supply device based on the time information received from the external display.
The control unit is characterized in that the communication record with the external display is stored in the storage unit as the water supply device information.
Water supply device. The water supply device includes the storage unit.
The storage unit includes a nonvolatile storage area time based on the time information received is stored from the external display unit together with the water supply instrumentation置情paper,
The water supply device according to any one of claims 1 to 3. The communication unit can receive a setting input for controlling the water supply device from the external display.
The control unit stores the setting input received from the external display device, in the storage unit together with the time based on the time information received from the external display as the water supply instrumentation置情paper,
The water supply device according to any one of claims 1 to 4. The storage unit stores setting information used to control the pump.
The setting information includes change restriction information that restricts the change of the setting information by the external display.
When the setting input received from the external display includes a change of the setting information whose change is restricted by the change restriction information, the control unit changes the change restriction information.
The water supply device according to claim 5. The storage unit stores setting information used to control the pump.
The setting information includes change restriction information that restricts the change of the setting information by the external display.
When the setting input received from the external display includes a change of the setting information whose change is restricted by the change restriction information, the control unit stores the identification information of the external display in the storage unit. Remember,
The water supply device according to claim 5 or 6. The water supply device according to any one of claims 1 to 7 , wherein the communication unit has a control unit-side antenna unit that receives radio waves from the external display 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 transmits the information to the external display by short-range wireless communication (NFC).

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