JPH08200233A - Supply water pump control device - Google Patents

Abstract

PURPOSE: To hold information stored over a long period with an inexpensive device, by constituting pump operation information just before so as to be written in a nonvolatile memory means when such as interrupted power supply occurs, as well as to eliminate necessity for an auxiliary power supply circuit for storing supply water pump operation information. CONSTITUTION: When a power supply is introduced, an action process is started by a control action program, to read information from a non-volatile memory element 5, and to perform initial setting for performing control action based on this information. Successively, an input process of input information from an input part 1 is performed, next to perform a control process of a supply water pump. During operation of the supply water pump, in the case of detecting power interruption in a power interruption detecting circuit 7, instantaneously operation information, alarm information, etc., are memoried in the memory element 5. Next, when the power supply is reset, action is performed at the first power supply introduced time, to call each kind of information just before power interruption stored in the memory element 5, and the supply water pump is reset to the same condition to a condition just before power interruption.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply pump control device for controlling the operation of a water supply pump, and in particular, stores the operation information of the water supply pump immediately before the power is cut off due to a power failure, etc.
The water supply pump is operated based on the stored operation information,
The present invention relates to a water supply pump control device capable of returning the operation of the water supply pump to the state immediately before the power was cut off.

[0002]

2. Description of the Related Art Conventionally, a commercial AC power supply similar to the drive power supply for a water supply pump is often used as a drive power supply for a water supply pump control device of this type, and if a switch that does not store the operating state is used, a power failure may occur. When the power is cut off and then the power is restored, it will be in the initial state and the operation cannot be resumed, causing a serious problem of water interruption.

Further, it is necessary to continuously store the alarm information, maintenance information such as the operation history, etc. in order to confirm the display while the water supply pump is installed. In order to avoid such a problem, an auxiliary power supply circuit using a battery or a capacitor is conventionally provided to store the operation information of the water supply pump.

[0004]

However, any of the methods of storing the operation information of the water supply pump by providing the auxiliary power supply circuit using the battery or the capacitor has the following problems. When the battery has reached the end of its electrical life, the battery needs to be replaced. A capacitor is difficult to store information for a long time because of its electric capacity.

The present invention has been made in view of the above circumstances, and when the power is cut off due to a power failure or the like, the information can be stored for a long period of time without separately providing an auxiliary power supply circuit for storing the operation information of the water supply pump. Can be retained across memory,
An object of the present invention is to provide a water supply pump control device capable of returning the water supply pump to the operating state immediately before power-off at power restoration.

[0006]

In order to solve the above problems, the present invention is a water supply pump control device comprising a control means for controlling the operation of a water supply pump, wherein the control means is turned off and then turned on again. Rewritable nonvolatile storage means capable of storing and holding information necessary for operation until supplied, writing means for writing information in the storage means, and reading means for reading out the information written in the storage means It has a means for displaying operation information and alarm information, and a detection means for detecting power cutoff and power recovery, writes the immediately preceding pump operation information to the storage means when the power is cut off, and reads the information from the storage means at the time of power recovery. The water supply pump is operated based on the information, and the pump is operated in the state immediately before the power is shut off.

Further, the control means is provided with a fixed time interval generating means, and the operation information of the water supply pump of the storage means is rewritten every fixed time.

Further, the control means is characterized in that, when the operation information of the water supply pump changes, at least the changed operation information is rewritten in the storage means.

[0009]

According to the present invention, since the pump operation information immediately before is cut off to the nonvolatile storage means when the power is cut off due to a power failure or the like, the information can be stored for a long period of time without separately providing an auxiliary power supply circuit for storing the water supply pump operation information. It is possible to store and hold the data over time, read the information from the storage means at the time of power restoration, operate the water supply pump based on the information, and operate the water supply pump in the state immediately before power-off.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration of a water supply pump control device. As shown in the figure, the water supply pump control device includes an input unit 1, a CPU 2, an output unit 3, a display unit 4, a nonvolatile storage element (nonvolatile RAM or the like) 5, a DC power supply unit 6, and a power failure detection circuit 7. . An alternating current power supply is connected to the direct current power supply unit 6, which converts the alternating current into direct current and supplies it to each unit such as the CPU 2. Further, a pump operation control signal is output from the output unit 3 to the water supply pump drive unit 8.

The DC power supply of the DC power supply unit 6 is monitored by the power failure detection circuit 7 and supplied to the CPU 2. The CPU 2 outputs the control result to the output unit 3 according to the input information from the input unit 1 according to the predetermined control content. This output unit 3
Is connected to the display unit 4 or the like. The CPU 2 is connected to the non-volatile storage element 5, the CPU 2 writes information to the non-volatile storage element 5, and the CPU 2 reads information from the non-volatile storage element 5.

FIG. 2 is a diagram showing an operation flow of the water supply pump control device shown in FIG. When the power is turned on (step ST10), operation processing is started by a predetermined control operation program, information is read from the nonvolatile memory element 5 (step ST11), and control operation is performed based on the information. Is initialized (step ST12).

Subsequently, input processing of input information from the input section 1 is performed (step ST13), and control processing for controlling the water supply pump is performed based on the initial setting and input processing (step ST14). As a result, a pump operation control signal is output from the output unit 3 to the water feed pump drive unit 8, and the water feed pump is operated based on the information read from the nonvolatile storage element 5 and the information input from the input unit 1.

Next, an output process for outputting the result of the control process is performed (step ST15), and then it is judged whether or not a power failure is detected by the power failure detection circuit 7 (step ST1).
6) If there is a power failure, immediately write information necessary for operating the water supply pump, such as operation information, alarm information, and maintenance information, to the nonvolatile storage element 5 (step ST17).

When the power is restored, the operation is performed when the power is turned on for the first time (step ST10). Since the nonvolatile memory element 5 stores the operation information, alarm information, and maintenance information immediately before the power failure, the water supply pump Returns in the same state as it was immediately before the power failure.

In the above embodiment, when the power failure detection circuit 7 detects a power failure, the nonvolatile memory element 5 receives the operation information,
Although the information necessary for operating the water supply pump such as alarm information and maintenance information is written, the present invention is not limited to this. Information, alarm information, maintenance information, and other information necessary for operating the water supply pump are written so that when the power failure is detected by the power failure detection circuit 7, the previously stored information can be read. It may be configured.

Further, when the operation information of the water supply pump changes, the changed operation information may be rewritten in the inactive storage element 5.

[0018]

As described above, according to the present invention, the following excellent effects can be obtained. (1) By writing various information on the operating state of the water supply pump to a non-volatile storage element that does not require an auxiliary power supply circuit when the power is cut off due to a power outage, etc., it becomes possible to retain the memory for a long time, and when the power is turned off when the power is restored The operation is restarted in the same operation state as the immediately previous operation state, and it is possible to avoid a serious problem of water cutoff due to the pump stop.

(2) For information such as alarm information and maintenance information that needs to be continuously monitored for the installation period of the water supply pump, when the power is shut off without returning to the initial state after the power is restored. You can revert to the last information.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a water supply pump control device of the present invention.

FIG. 2 is a diagram showing an operation flow of the water supply pump control device of the present invention.

[Explanation of symbols]

 1 Input Section 2 CPU 3 Output Section 4 Display Section 5 Nonvolatile Storage Element 6 DC Power Supply Unit 7 Power Failure Detection Circuit 8 Water Supply Pump Drive Section

Front page continuation (72) Inventor Motoyasu Sato 11-11 Haneda Asahi-cho, Ota-ku, Tokyo Ebara Densan Co., Ltd. (72) Inventor Koichi Kido 11-11 Haneda-asaka-cho, Ota-ku, Tokyo Ebara Densan

Claims (3)

[Claims] 1. A water supply pump control device comprising a control means for controlling the operation of a water supply pump, wherein the control means stores and retains information necessary for operation from when power is cut off until power is supplied again. A rewritable non-volatile storage means capable of storing information, a writing means for writing information to the storage means, a reading means for reading the information written in the storage means, and a means for displaying operation information and alarm information. The pump is provided with a detection unit for detecting power cutoff and power recovery, writes the immediately preceding pump operation information to the storage unit when the power is cut off, reads the information from the storage unit when the power is restored, and operates the water supply pump based on the information. A water supply pump control device characterized in that the pump is operated in a state immediately before power-off. 2. The water supply pump operating device according to claim 1, wherein the control means includes a constant time interval generating means, and rewrites the operation information of the water supply pump of the storage means at every constant time. 3. The water supply pump operating device according to claim 1, wherein the control means rewrites at least the changed operation information in the storage means when the operation information of the water supply pump changes.