JP2018127997A - Water supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water supply device capable of more accurately clocking present time.SOLUTION: A water supply device for supplying water to a building includes a control section having a clocking section for clocking present time, and a communication section. The communication section is constituted to communicate with an external display, and can transmit various information of the water supply device to the external display, and can receive time information from the external display. The control section corrects clocking of the present time by the clocking section on the basis of deviation between the time information received by the communication section from the external display and the present time clocked by the clocking section.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a water supply apparatus.

  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 apparatus, 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 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

  As described above, when the water supply device can be operated using an external display device such as a portable terminal, the setting of the water supply device can be changed by a simple operation. May interfere with the operation. Therefore, when a malfunction occurs in the water supply apparatus, referring to the history of the setting change is very effective for investigating the cause of the malfunction.

  Regardless of the history of setting changes, in the water supply apparatus, it is useful for part of equipment maintenance and inspection to store a history of information related to operation of the water supply apparatus, such as an abnormality detection history and a history related to a pump. When storing the history of such information, it is effective to store the time information when storing the information together. However, there may be an error in the time used for controlling the water supply device due to the environment in which the water supply device is installed and the individual differences of the water supply devices. For this reason, in order to memorize | store correctly the log | history of the information regarding the driving | operation of a water supply apparatus, it is necessary to correct | amend the time currently used for control of a water supply apparatus regularly.

  Moreover, in a water supply apparatus, it may be desired to automatically perform an operation such as a test operation or a regular operation at a predetermined date and time. Even in such a case, if there is a difference in the current time of the water supply device, the water supply device is operated at an unintended timing.

  This invention is made | formed in view of the situation mentioned above, and makes it one of the objectives to provide the water supply apparatus which can count the present time more correctly.

(Embodiment 1) According to Embodiment 1, a water supply device for supplying water to a building is provided, and the water supply device communicates with a control unit having a time measuring unit for counting the current time and an external display. A communication unit capable of transmitting various types of information on the water supply device to an external display and receiving time information from the external display. And a control part corrects the count of the present time by a time measuring part based on the shift | offset | difference of the time information which the communication part received from the external indicator, and the present time which the time measuring part counted.
According to the first aspect, since the counting of the current time by the timer unit is corrected based on the time information received from the external display, the current time in the water supply device can be counted more accurately.

(Aspect 2) According to Aspect 2, the water supply device according to Aspect 1, wherein the control unit externally receives the first time information received by the communication unit from the external display and the first time information. The difference from the second time information received by the communication unit from the display is calculated. The control unit calculates a difference in counting of the current time by the counting unit per unit time based on the calculated difference and the difference between the first time information and the current time counted by the counting unit. And a control part corrects the count of the present time by a time measuring part based on the shift | offset | difference of the count of the present time by the calculated part per unit time.
According to the second aspect, based on the time information received from the external display device, the deviation of the current time count by the counting unit per unit time is calculated. Thereby, the present time in a water supply apparatus can be counted more correctly.

(Embodiment 3) According to embodiment 3, in the water supply device of embodiment 1 or 2, the various types of information on the water supply device include information related to the operation of the water supply device, and the control unit includes information related to the operation of the water supply device. It memorize | stores in a memory | storage part with the present time which the time measuring part counted.
According to the form 3, the information regarding the driving | operation of a water supply apparatus can be memorize | stored in a memory | storage part with more exact time.

(Aspect 4) According to Aspect 4, the water supply device of Aspect 3 that cites Aspect 2, wherein the control unit stores the current time count by the counter per unit time calculated per unit time The current time counted by the timekeeping section stored in the section is corrected.
According to the fourth aspect, the current time stored in the storage unit can be corrected based on the time information received from the external display. Thereby, the information regarding the driving | operation of a water supply apparatus can be memorize | stored in a memory | storage part with more exact time.

(Embodiment 5) According to embodiment 5, the water supply device of embodiment 3 or 4, wherein the control unit includes, as various information of the water supply device, abnormality information of the water supply device, operation / stop of the pump, pump inflow pressure, pump At least a part of the discharge pressure, the motor current value of the pump, the flow rate information from the pump, the temperature of the pump, and the rotational speed of the pump are stored in the storage unit.

(Aspect 6) According to Aspect 6, the water supply device according to any one of Aspects 1 to 5, wherein the communication unit includes a control unit side antenna unit that receives a radio wave from an external display and converts the radio wave into electric power. Have.

(Embodiment 7) According to Embodiment 7, the water supply device according to any one of Embodiments 1 to 6, wherein the communication unit transmits information to the external display device by near field communication (NFC).

(Embodiment 8) According to Embodiment 8, the water supply device according to any one of Embodiments 1 to 7, wherein the control unit stores a communication record with the external display device as various information of the water supply device in the storage unit.

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 present time count process performed by the control part. It is a flowchart which shows an example of the time correction process performed by the control part. It is a figure for demonstrating the control which corrects the present time based on the received time. It is a figure which shows an example which performs suppression control based on the log | history of the driving information of a water supply apparatus. It is a figure which shows another form of a control part. It is a figure which shows the control part and external display of a modification.

  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 30 </ b> A and 30 </ b> B and a pressure tank 50 disposed between these pumps 30 </ b> A and 30 </ b> B are placed on the 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 “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 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 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 (storage unit) 66, a calculation unit 69, an I / O unit (input unit and output unit) 70, an operation panel (operation display unit) 79, and communication. A unit 73 and a timing unit 74 are provided. The setting unit 71 and the display unit 72 are provided in the operation panel 79.

  Further, as shown in FIG. 3, the control unit 65 may be a separate substrate from the communication unit 73. In this case, the control unit 65 and the communication unit 73 are connected by wired communication such as serial communication or signal line or wireless communication. 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 or signal lines are used. 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 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 stop information, starting pressure, and other information necessary for control as setting information via the setting unit 71 (setting input), and can change the setting information at the installation site. ing.

Further, the setting information may include change restriction information for restricting the 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, by changing the change restriction information through the setting unit 71, the change (setting input) of the setting information by the external display device 80 is permitted. 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.

  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, the current operation status (operation information) of the pumps 30A and 30B, for example, the pump 30A. , 30B, operation frequency, current, inflow pressure, discharge pressure, trip of the inverter that drives the motor units 33A, 33B, suction pressure drop alarm, water tank alarm, and the like are displayed.

  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.

  The external indicator 80 may have a function of holding an accurate time when communicating with the water supply apparatus 10. As an example, the external display device 80 has a GPS, and it is preferable to use a device having a communication function for periodically acquiring the standard time at the current location via a public line or a network. And when communicating with the water supply apparatus 10, it is good to transmit to a water supply apparatus with reference to this standard time with the application software for exclusive use which communicates with the water supply apparatus 10 mentioned above. However, in this embodiment, it is only necessary to have an accurate time only when communicating with the water supply apparatus 10, and the method of acquiring the accurate time by the external indicator 80 is only for the above-described automatic acquisition of the standard time. Not exclusively. A dedicated application software may be provided with an input function for the current time, and the user may set the time before communicating with the water supply apparatus 10.

  In addition, the operation panel 79 or the display part 72 is not provided in the control part 65, and only the external indicator 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.

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. Here, the output of the pump may be substituted by the capacity of the motor units 33A and 33B, the capacity of an inverter for driving the motor units 33A and 33B, or the like. Further, when a failure occurs, information such as a failure history and a periodic operation history of the water supply apparatus 10 is also stored in the control memory 66.

  As the control memory 66, ROM, HDD, EEPROM, FeRAM, nonvolatile memory such as flash memory, and volatile memory such as RAM are used. In the control memory 66, various data, for example, calculation result data (operation time, integrated value, etc.) in the calculation unit 69, pressure values (inflow pressure, discharge pressure), setting information input through the setting unit 71, and Data or the like input through the I / O unit 70 or output through the I / O unit 70 is stored.

  In the water supply apparatus 10 of this embodiment, as information regarding the operation of the water supply apparatus 10, change history of setting information (setting value), abnormality information of the water supply apparatus 10, operation / stop of the pumps 30A and 30B, discharge of the pumps 30A and 30B Pressure (discharge pressure and inflow pressure in the case of direct-coupled water supply), current values of pumps 30A and 30B (motor units 33A and 33B), flow rates of pumps 30A and 30B, and temperatures of pumps 30A and 30B. The history is stored in the control memory 66. These histories are stored together with the current time Tc of the water supply apparatus 10. These histories may be stored in the non-volatile storage area when the control memory 66 has a non-volatile storage area.

  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 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 so on. An output from the calculation unit 69 is input to the I / O unit 70.

  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.

  The timer unit 74 is provided to count the current time in the water supply apparatus 10. The timer unit 74 includes a CERALOCK, a crystal resonator, a crystal oscillator, or the like, and transmits a timer count signal that counts up every predetermined time to the arithmetic unit 69. In the example illustrated in FIG. 4, the timer unit 74 is configured separately from the calculator 69, but the timer unit 74 may be configured as a part of the calculator 69 such as a CPU clock. In the present embodiment, the timer 74 sends a timer count signal to the calculator 69, and the calculator 69 calculates the current time based on the timer count signal and stores it in the control memory 66. However, instead of such an example, it is assumed that the timing unit 74 calculates the current time and stores it in the control memory 66, and the calculation unit 69 refers to the control memory 66 so that the calculation unit 69 acquires the current time. Also good. Moreover, the calculating part 69 and the time measuring part 74 of this embodiment are provided with the battery which is not illustrated so that the present | current time can be counted even when the electric power supply to the water supply apparatus 10 is interrupted | blocked. The calculating unit 69 and the time measuring unit 74 operate with external power when external power is supplied, and operate with power from the battery when supply of external power is interrupted due to a power failure or the like, and count the current time.

  Next, the automatic operation in the water supply control of the water supply apparatus 10 by the control unit 65 will be described. When the discharge pressure decreases 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) with respect to the discharge pressure of the pumps 30A and 30B is set using the rotation speed of the pumps 30A and 30B and the target pressure control curve, and the target pressure is constant. In the case of control, the set pressure is set as the target pressure (SV). The discharge pressure is assumed to be the current 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 inflow pressure. Specifically, the target pressure control curve is added only by the inflow 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, discharges it, increases the rotational speed of the pumps 30A and 30B until the 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 the water is used again in the building after the pumps 30A and 30B have stopped for a small amount of water, the discharge 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.

  Subsequently, the counting of the current time in the water supply apparatus 10 will be described. FIG. 5 is a flowchart illustrating an example of the current time counting process. In the present embodiment, the current time counting process is always executed by the control unit 65.

In the current time counting process, the control unit 65 waits for a count-up signal to be input from the time measuring unit 74 to the calculation unit 69 (S100). In the present embodiment, the count-up by the time measuring unit 74 is performed about every 30 μsec (microseconds) as an example. However, the count-up by the timer 74 may be performed at a small frequency (for example, about 1 hertz or about 1000 hertz), or may be performed at a large frequency (for example, several tens of megahertz). The controller 65 repeatedly executes the process of step S100 until the count-up signal is input from the timer 74 to the calculator 69.

  When the count-up signal is input from the timer 74 to the calculator 69 (S100: Yes), the controller 65 executes a process of incrementing the timer count Ct by a value 1 (S110). The timer count Ct is stored in a predetermined storage area of the storage unit 78. Then, the control unit 65 calculates the current time Tc by adding the product of the timer count Ct and the time correction coefficient Kt to the reference time T0 (S120), and returns to the process of step S100 again. The calculated current time Tc is stored in a predetermined storage area of the storage unit 78. Here, the time correction coefficient Kt is a coefficient for converting the timer count Ct into time information, and is determined based on the count-up cycle by the time measuring unit 74 and the unit of time information possessed by the control unit 65. .

  By such current time counting processing, the control unit 65 calculates the current time of the water supply apparatus 10 based on the reference time T0 and the current time count (counting up) by the time measuring unit 74.

  Next, control for correcting the current time in the water supply apparatus 10 will be described. FIG. 6 is a flowchart illustrating an example of time correction processing. The time correction process of the present embodiment is executed by the control unit 65 when the communication unit 73 establishes communication with the external display device 80.

  In the time correction process, the control unit 65 first determines whether or not the time T1 is received from the external display device 80 (S200). Then, when the time T1 is not received from the external display device 80 (S200: No), the time correction process is terminated as it is. In the present embodiment, dedicated application software for communicating with the water supply apparatus 10 is installed in the external display device 80, and the external display device 80 is connected to the external display device 80 when communication with the water supply device 10 is established. It is assumed that the current time T <b> 1 possessed by is transmitted to the water supply apparatus 10. For this reason, in this embodiment, in the process of step S200, the control part 65 determines with having received time T1 in principle. However, as described above, the external display device 80 may be able to select whether or not to transmit the time T1 when communication with the water supply apparatus 10 is established. Further, the external display device 80 or the communication unit 73 may not transmit or receive the time T1 when a plurality of communications are established in a short time (for example, several seconds or several minutes). If it carries out like this, it will suppress that communication of time T1 is frequently performed with the external indicator 80 and the water supply apparatus 10, and time correction of the water supply apparatus 10 is frequently performed by time correction processing. it can.

When the time T1 is received from the external display 80 to the communication unit 73 (S200: Yes), the control unit 65 calculates the elapsed time Tp from the reference time T0 by subtracting the reference time T0 from the received time T1. (S210). Further, the control unit 65 calculates the error ΔT of the current time Tc of the water supply apparatus 10 by subtracting the reception time T1 from the current time Tc calculated in the current time counting process (S220). Then, the control unit 65 divides the error ΔT by the elapsed time Tp to calculate an error rate Rt that is a deviation of the current time Tc per unit time (S230). Here, the current time Tc may be acquired by referring to the information stored in the storage unit 78. Since the water supply apparatus 10 is installed in an environment with a lot of electrical noise or in an environment with a large temperature change, the current time Tc calculated by the control unit 65 based on the count by the time measuring unit 74 is the actual time Tc. It may be out of time. On the other hand, the external display device 80 can periodically acquire the standard time at the current location via a public line or network, and the time T1 possessed by the external display device 80 is relatively accurate. For this reason, in the water supply apparatus 10 of this embodiment, the time T1 received from the external indicator 80 is subtracted, and the error ΔT and the error rate Rt of the current time Tc of the water supply apparatus 10 are calculated.

  Next, the control part 65 corrects the time correction coefficient Kt for calculating the present time of the water supply apparatus 10 by following Formula (1) based on the calculated error rate Rt per unit time (S240). Then, the control unit 65 sets the reception time T1 from the external display 80 to the reference time T0 (S250), resets the timer count Ct to the value 0 (S160), and ends the time correction process. When the reception time T1 from the external display 80 is set to the reference time T0 and the timer count Ct is reset to the value 0, the current time in the water supply apparatus 10 is corrected to the reception time T1 from the external display 80. Thereafter, the current time Tc is counted. In the expression (1), the time correction coefficient Kt is corrected by adding the product of the time correction coefficient Kt and the error ratio Rt to the current time correction coefficient Kt. Thereby, after that, in step S120 of the current time counting process of FIG. 5, the calculation is performed using the corrected time correction coefficient Kt. By such control, the current time Tc in the water supply apparatus 10 can be calculated more accurately.

Kt = Kt * (1 + Rt) (1)

  FIG. 7 is a diagram for explaining control for correcting the current time based on the received time. In FIG. 7, the horizontal axis indicates the elapsed time Tt, and the vertical axis indicates the error ΔT of the current time Tc in the water supply apparatus 10 with respect to the elapsed time Tt. The control unit 65 counts the current time Tc based on the count-up by the time measuring unit 74, and as shown in FIG. 7, the error ΔT of the current time Tc is considered to be proportional to the elapsed time Tt (ΔT = Rt * Tt). The proportionality coefficient is calculated by dividing the error ΔT1 of the elapsed time Tt when the time T1 is received from the external display device 80 by the elapsed time Tp from the reference time T0 (error ratio Rt = (ΔT1 / Tp)). For this reason, in the water supply apparatus 10 of this embodiment, the time correction coefficient Kt is corrected so as to increase by the error rate Rt. By such control, the current time Tc calculated thereafter can be made more accurate. Thereby, for example, when information (history) regarding the operation of the water supply apparatus 10 including the failure history is stored together with the current time Tc, the history information of the water supply apparatus 10 can be stored together with more accurate time.

  As described above, the water supply device 10 of the present embodiment receives the time information T1 from the external display 80, the reference time T0 is set, and the current time Tc is counted, so the current time Tc of the water supply device 10 is calculated. It can be more accurate. That is, for example, even when there is a deviation in the current time Tc due to the influence of noise or temperature change, the control unit 65 can appropriately correct the current time Tc every time the time T1 is received from the external display device 80. it can. Moreover, since the control unit 65 corrects the time correction coefficient Kt based on the reception time T1 from the external display device 80, the current time Tc calculated thereafter can be made more accurate.

  Moreover, in the water supply apparatus 10 of this embodiment, since the present time Tc can be made into exact time, when performing regular water supply operation | movement at predetermined time, regular operation | movement can be performed at exact time. It becomes like this. Furthermore, the history information regarding the operation of the water supply apparatus 10 is stored together with the accurate date and time, so that the operation state for each subsequent date and time (for example, abnormality information of the water supply apparatus 10, operation / stop of the pumps 30A and 30B, pump 30A, The discharge pressure of 30B, the current values of the pumps 30A and 30B (motor units 33A and 33B), the flow rates of the pumps 30A and 30B, and the temperatures of the pumps 30A and 30B can also be predicted. And based on the driving | running state of the water supply apparatus 10 for every date, it also becomes possible to change (adjust) the operation control of the water supply apparatus 10 in predetermined time. That is, the control unit 65 stores the operation information of the water supply device 10 together with the date and time, and when the same operation information is continuously stored in the same target every predetermined date and time, at the next predetermined date and time. Then, suppression control that suppresses the occurrence of the same driving information in the same target is executed.

  FIG. 8 is a diagram illustrating an example of changing the operation control of the water supply apparatus 10 based on the history of operation information of the water supply apparatus 10. In FIG. 8, abnormality information of the water supply apparatus 10 for each time stored in the storage unit 78 is shown with the horizontal axis as the time axis. In the example shown in FIG. 8, at a specific time (UU: YY) on a specific day of the week (K day), the pumps 30A and 30B are started from a state where they are stopped by a small amount of water, and at that time, the motor units 33A and 33B are started. The current flowing through the overcurrent becomes an overcurrent, and the starting of the pumps 30A and 30B is retried. In addition, at the same time (UU: YZ, UU: YX) on the same day of the week (K day) one week and two weeks later, the start of the pumps 30A and 30B is also retried. In such a case, the control unit 65 determines that the same abnormality has occurred at a predetermined date and time, and calculates the time (the same time one week later) that the abnormality is expected to occur next. And the control part 65 performs suppression control so that it can suppress that the same abnormality generate | occur | produces in the calculated date. In the example shown in FIG. 8, the overcurrent suppression control at the time of start is executed so that the retry of the start of the pumps 30A and 30B is suppressed. At this time, for example, the control unit 65 may start the pumps 30A and 30B by setting the current limit value low in advance, or may start the pumps 30A and 30B in advance slightly before that.

  In the example shown in FIGS. 5 and 6, the count of the current time Tc based on the timer count Ct is corrected by correcting the time correction coefficient Kt. However, the correction of the count of the current time Tc is not limited to the correction of the time correction coefficient Kt, and the count of the current time Tc is corrected by adding (or subtracting) a correction value to the current time Tc at a predetermined timing. May be. Such an example is particularly effective when the frequency of counting up by the time measuring unit 74 is small. Here, the predetermined timing is, for example, every predetermined period such as several hours or one day, the timing at which the operation information of the water supply device 10 is stored in the storage unit 78, or the current time Tc on the display unit 72. The display timing can be set. Alternatively, the current time T1 may be corrected for each elapsed time Tp when the time T1 is received from the external display device 80. Furthermore, the correction value of the current time Tc can be calculated by the product of the elapsed time from the previous correction of the current time Tc and the error rate Rp. Also in such an example, the current time Tc of the water supply apparatus 10 can be made accurate.

  As another configuration of FIG. 4, the calculation unit 69 and the control memory 66 may be provided in the operation display unit 79 or may be provided in the communication unit 73. The control unit 65 may be configured on one board, or at least one of the operation display unit 79, the communication unit 73, and the time measuring unit 74 as a separate board from the calculation unit 69 for communication and buses. It is also possible to connect them to each other. Further, the memory may be only a volatile memory or a non-volatile memory.

  FIG. 9 is a diagram showing another form of the control unit 65. In the form shown in FIG. 9, the timekeeping unit 74 includes a timekeeping integrated circuit 74a, a timekeeping memory 74b, and a timekeeping battery 74c. As an example, the integrated circuit 74a of the timekeeping unit 74 uses the time correction coefficient Kt to calculate the current time according to a count-up such as a Ceralock (not shown), a crystal oscillator, or a crystal oscillator, and uses the calculated current time for timekeeping. Store in the memory 74b. Then, the calculation unit 69 acquires the current time by referring to the timing memory 74b. In this case, the calculation unit 69 stores the time correction coefficient Kt and the reference time T0 in the timekeeping memory 74b in place of or in addition to the storage unit 78 in steps S240 and 250 of the time correction process of FIG. The same control as in the above-described embodiment can be executed. 5 may be executed by the integrated circuit 74a of the timer unit 74. As described above, the timekeeping unit 74 includes the timekeeping battery 74c, so that the calculation of the current time can be continued even when the supply of power to the water supply apparatus 10 is interrupted. In addition, a simple battery can be used as compared with the case where a battery capable of supplying power is provided in the entire control unit 65 or the water supply apparatus 10, and the apparatus can be reduced in size and cost.

(Modification 1)
FIG. 10 is a diagram illustrating a modified control unit and an external display. 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 nonvolatile memory (not shown). The integrated circuit 77 is electrically connected to the control unit side antenna unit 76 and the storage unit 78. Note that the control unit 65A illustrated in FIG. 10 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. In addition, various setting values of the water supply apparatus 10 can be changed from the external display device 80. 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 the state of the water supply device 10 on each general-purpose terminal device or change the setting, it is possible to provide an operation according to the user's level or purpose. . 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 being supplied to the control unit 65 during maintenance of the water supply device 10, the external display device 80 acquires and displays data from the storage unit 78 of the control unit 65, or displays the data in the storage unit 78. Stored data can be changed. At this time, even if the integrated circuit 77 of the control unit 65A performs the time correction processing of FIG. 6 and the like, the correction of the time correction coefficient Kt and the reference time T0 or the reset of the timer counter Ct is stored in the storage unit 78. Good.

  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). In this case, pump operation information, setting information change history, 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 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. 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 device 10 changes the setting information described above when receiving a setting information change command from the remote monitoring device, or when communicating with the remote monitoring device, similarly to when communicating with the external indicator 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 may be shared with the control memory 66 by the water supply device 10 of this embodiment or the modification. For example, information written in the storage unit 78 when the water supply apparatus 10 is turned off is copied to the control memory 66 after the power supply of the water supply apparatus 10 is restored, and various history information in the control memory 66 is changed during energization. Is preferably copied to the storage unit 78. However, the copying is not limited to such timing, and the values in the control memory 66 and the storage unit 78 need only match.

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. Moreover, the range which can solve at least one part of the subject mentioned above,
Alternatively, any combination or omission of each component described in the claims and the specification is possible within a range where at least a part of the effect is exhibited.

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 67 ... Communication memory 68 ... Non-volatile memory 69 ... arithmetic 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 (8)

A water supply device for supplying water to a building,
A control unit having a timing unit for counting the current time;
A communication unit configured to be able to communicate with an external display, capable of transmitting various information of the water supply device to the external display, and capable of receiving time information from the external display;
With
The control unit corrects the current time count by the timekeeping unit based on the difference between the time information received by the communication unit from the external display and the current time counted by the timekeeping unit,
Water supply device. The control unit includes first time information received by the communication unit from the external display, and second time information received by the communication unit from the external display before receiving the first time information. And the difference between the calculated difference and the first time information and the current time counted by the counting unit is used to count the current time by the counting unit per unit time. Calculating a deviation, and correcting the counting of the current time by the timekeeping unit based on the deviation of the counting of the current time by the counting unit per unit time calculated,
The water supply apparatus of Claim 2. The various information on the water supply device includes information on the operation of the water supply device,
The control unit stores information related to the operation of the water supply device in a storage unit together with the current time counted by the timing unit.
The water supply apparatus of Claim 1 or 2. The control unit corrects the current time counted by the timekeeping unit stored in the storage unit, based on a deviation in counting of the current time by the counting unit per unit time calculated.
The water supply apparatus of Claim 3 which quotes Claim 2. The control unit includes, as various information of the water supply device, abnormality information of the water supply device, operation / stop of the pump, inflow pressure of the pump, discharge pressure of the pump, current value of a motor included in the pump, Storing at least a part of the flow rate information from the pump, the temperature of the pump, and the rotational speed of the pump in the storage unit;
The water supply apparatus of Claim 3 or 4.   The water supply device according to any one of claims 1 to 5, wherein the communication unit includes 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 6, wherein the communication unit transmits the information to the external display device by near field communication (NFC). The said control part memorize | stores the communication record with the said external indicator in the said memory | storage part as various information of the said water supply apparatus, The water supply apparatus as described in any one of Claim 1 to 7 characterized by the above-mentioned.

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