JPH0138400Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a monitoring device that monitors water leakage in water supply equipment and idling of a water supply pump.

Generally, consumer water supply equipment used in buildings and the like is shown in FIG. 1, for example.

That is, city water is temporarily stored in a water storage tank 4 equipped with a water level sensor 3 in a consumer 2 via a water meter 1, and then pumped up by a water supply pump 5 to an elevated tank 7 equipped with a water level sensor 6. Water is supplied to taps, toilets, etc. by natural falling water.

When water is used in taps, toilets, etc., the water level in the elevated tank 7 drops, which is detected by the water level sensor 6 and the water supply pump 5 is used to keep the water level in the elevated tank 7 constant. It's like driving and controlling.

By the way, in such water supply equipment, if a leak occurs due to a toilet flush valve malfunctioning or a water tap being forgotten to be turned on, water charges, sewerage charges, and electricity charges for water pumps are wasted. become.

Moreover, the occurrence of water leakage is far more common than the occurrence of water pump failure in terms of the failure rate of the water supply equipment as a whole.

Furthermore, if the water supply pump is operated in a state where the inside of the casing is not full of water, water will not be pumped up and the shaft will seize or break.

However, conventional water supply equipment has no countermeasures against such water leakage or idling of the water supply pump.

The present invention has been made in view of the above points, and provides a monitoring device for water supply equipment that monitors water leakage in the water supply equipment and idling of the water supply pump and issues an alarm.

Therefore, as a means to solve the above-mentioned problems, we have developed an operation state detection means that detects the operation state of the water supply pump after the building etc. becomes unoccupied, and a system that detects the operation state of the water supply pump within a predetermined time based on the operation state detection result. a water leak determination means for measuring the time during which the water supply pump is operated and determining whether or not the operating time exceeds a preset time; idling determination means for determining whether the time has exceeded a preset time;
A warning means for issuing a respective alarm when water leakage or idle running is determined, and an alarm transmission means for transmitting the alarm issued by the warning means to a remote location via a predetermined communication line. It is prepared.

According to the present invention, the time required for the water supply pump to pump a certain volume of water into the tank under normal conditions is known in advance, so if the time required is measured and the time required is longer than the required time, then A water leak has occurred in the pump system, and the water leak determining means determines that the pump has not been filled with water within a certain required time, and a water leak alarm is transmitted from the alarm means to a remote monitoring center via the alarm transmitting means. Additionally, if it is determined that the pump continues to operate for longer than the required time, the idle determination means determines that the pump is idling even after pumping water to the tank, that is, in an unloaded state. The idling warning is transmitted from the warning means to a remote monitoring center via the warning transmission means.

Hereinafter, embodiments of the present invention will be described with reference to FIG. 2 and subsequent figures of the accompanying drawings. Note that the same parts as in FIG. 1 are given the same reference numerals, and the explanation of those parts will be omitted.

FIG. 2 is a configuration diagram showing an embodiment of the present invention.

In the figure, this consumer 2 is equipped with a mechanical security device 10. This mechanical security device 10
is the warning on/off signal S ₁ that commands warning on and off.
a key box 11 that outputs an intrusion signal S 2 , a security panel 13 that outputs an intrusion signal S ₂ when the intrusion sensor 12 detects an intruder while the key box 11 issues a warning entry command _;
The system includes a communication device 14 that notifies a monitoring center (not shown) of the input via a telephone line when the information is input.

The security panel 13 also serves as a monitoring command means, and outputs a warning on/off signal _S1 from the key box 11 to an alarm device 20, which will be described later.

It should be noted that when the warning ON/OFF signal _S1 is on, it is a water leakage monitoring start command, and when the warning is off, it is a water leakage monitoring end command.

On the other hand, the electromagnetic contactor 17 of the pump panel 16 opens and closes the power supply path to the motor 15 that drives the water supply pump 5.
A switch 18 which is an operating state detection means linked to
An operating state signal _P1 corresponding to the on/off state of this switch 18 is input to the alarm 20.

The switch 18 is turned on when the water supply pump 5 is in operation, and turned off when it is stopped.

The alarm 20 is a water leak determination means and an idle determination means, and as shown in FIG. 3, for example, a CPU (central processing unit) 201, a program memory (ROM)
202, a microcomputer control unit consisting of a data memory (RAM) 203, input interfaces 204a to 204c, and output interfaces 205a and 205b, and a unit time T for generating an alarm.
Operating time of the water supply pump 5 per operation (first set time) T ₁ and one operating time (second set time) T ₂
and a numeric keypad 206 for setting the monitoring cycle (discrimination time interval) Δt, a display 207 that displays each operating time set with the numeric keypad 206, and a normally open contact 208a for outputting the water leakage signal P ₂ and the idling signal P ₃ .
and a relay 208 consisting of a coil 208b.

Then, this alarm 20 generates a warning on/off signal based on a program stored in the ROM 202 in advance.
After detecting the state of S ₁ and entering the warning state, the operating time T _A of the water supply pump 5 per unit time T ₁ was measured based on the operating status signal P ₁ and measured every monitoring cycle Δt. Operation time T _A is the first set time T ₁
When T _A >T ₁ , the normally open contact 208a of the relay 208 is closed and a water leakage signal P ₂ is output to the communication device 14 of the mechanical security device 10.

Further, this alarm device 20 determines one operation time of the water supply pump 5 based on the constant operation state signal P ₁ based on a program stored in the ROM 202 in advance.
T _B is measured, and it is determined whether the operating time T _B measured at each monitoring cycle Δt exceeds the second set time T ₂ , and when T _B > T ₂ , the normally open contact of the relay 208 is set. 208a is closed and an idle signal _P3 is output to the communication device 14 of the mechanical security device 10.

When the water leakage signal P ₂ or the idling signal P ₃ is input, the communication device 14 of the mechanical security device 10 notifies a monitoring center or the like of this fact. That is, this communication device 14 constitutes the first and second alarm means.

Next, the operation of the embodiment configured as described above will be explained with reference to FIGS. 4 to 6.

First, the initial setting of the alarm device 20 will be explained with reference to FIG.

In the figure, after the power is turned on, the operator operates the numeric keypad 206 while checking the display 207 and inputs the first set time _T1 . 1 setting time T ₁
is displayed on the display 207, and the RAM 203
Store in.

Thereafter, the operator similarly operates the numeric keypad 206 to input the second set time T _{2 , so that the inputted second set time T 2 is} displayed on the display 207 , and the RAM 203 Store in.

Furthermore, the operator operates the numeric keypad 206 to
By inputting the monitoring cycle Δt, the input monitoring cycle Δt is stored in the RAM 203. Note that the monitoring cycle Δt is set to a time sufficiently shorter than the unit time T. For example, unit time T
= 1 hour, monitoring cycle Δt = 5 minutes, and so on.

Next, the monitoring operation of the alarm device 20 will be explained with reference to FIG.

In the same figure, STEP 1: Check whether the warning ON/OFF signal _S1 is in the warning ON state or not, and determine whether or not to start water leakage monitoring.If the result of this determination is the warning ON state, that is, the water leakage monitoring If it has started, proceed to STEP 2, and if the alarm is off, that is, if water leakage monitoring has ended, proceed to STEP 8.

STEP 2 to 5: Check whether flag F is F=1 or not. If F=1, jump to STEP 6. If F=1, set unit time T to the timer and start, until time up. teeth
Proceed to STEP 8 and set the flag F after time up to F=
Set it to 1 and proceed to STEP 6. That is, here, the determination as to whether or not there is a water leak is not performed until the unit time T has elapsed from the time when water leak monitoring was started.

STEP 6, 7: The operating time T _A of the water supply pump 5 per unit time T measured by a measurement program (not shown) exceeds the first set time T ₁ (T _A
> T ₁ ), and if T _A > T ₁ , output the water leak signal P ₂ to the communication device 14 to report it, then STEP
Proceed to STEP 8, and if T _A ≦T ₁ , proceed directly to STEP 8.

STEP 8, 9: One operation time T _B of the water supply pump 5 measured by a measurement program (not shown)
determines whether or not exceeds the second set time T ₂ (T _B > T ₂ ), and if T _B > T ₂ , outputs the idle signal P ₃ to the communication device 14 to report it. Proceed to STEP 10, and if T _B ≦T ₂ , proceed directly to STEP 10.

STEP 10, 11: Start by setting the monitoring cycle Δt on the timer, and after time-up, STEP
Return to 1.

An example of the specific operation of this alarm device 20 will be explained with reference to FIG. For convenience of illustration, the unit time T = 2 hours, the first set time T ₁ = 1.4 hours, the second
The set time T ₂ = 3.4 hours, and the monitoring cycle Δt = 0.5 hours.

In the example of Fig. 6, first we will discuss the water leakage monitoring operation. In the figure B, the monitoring operation starts from time _t1 when the alarm ON/OFF signal _S1 becomes alarm ON, and the unit time T
The system waits to determine whether or not there is a water leak until the time period has elapsed (STEPs 1 to 5 in FIG. 5).

On the other hand, as shown in FIG. 6C, the measurement program (not shown) enters a routine to measure the operating time T A of the water supply pump 5 per unit time _T from time t ₁ , and from time t ₁ the unit time T starts. Measure the time T _A during which the operating status signal P ₁ shown in A of the same figure is in operation until the time elapses, and similarly, the unit time T elapses from time t ₂ when the monitoring cycle Δt has elapsed from time t ₁ . Measure the time T _A until Thereafter, the time T _A from t _o (n=3...n) until the unit time T elapses is measured in the same manner.

Then, the time when unit time T has passed from time t ₁
At t ₅ , the measured operating time T _A becomes the first set time T ₁
= 1. Determine whether the time has exceeded 4 hours (5th
Step 6 in the diagram).

At this time t ₅ , the operating time T _A from time t ₁ to _{t 5}
is 0.5 hours (0.5h), and the determination result is T _A ≦T ₁ , so the next determination is made again at time t ₆ . at the time
At t ₆ and from t ₇ to _{t 14} , the determination results are all T _A ≦T ₁ , so the next determination is made again at time t ₁₅ .

At this time t ₁₅ , the operating time _T A per unit time T from time t ₁₁ to _{t 15} becomes 1.5 hours (1.5 h), and the determination result becomes T _A > T ₁ , as shown in Fig. 6 D. Outputs water leakage signal _P2 as shown below. Similarly, at time t ₂₁ ,
Since T _A > T ₁ , a water leakage signal P ₂ is output.

Then, at the point when the warning on/off signal S ₁ becomes warning off
Water leakage monitoring operation ends at t ₂₀ .

Next, the operation for monitoring idling will be explained. This operation is executed regardless of the state of warning signal S ₁ ,
A measurement program (not shown) also constantly measures one operation time T _B of the water supply pump 5.

Therefore, since the water supply pump 5 that started operating at time _{t 25 continues} to operate for 4.5 hours as shown _{in FIG .} T ₂ , the idling signal P ₃ is output as shown in E of the same figure, and the monitoring cycle Δt has elapsed from this time t ₂₆ to the time t ₂₇ and the same time.
The idle signal _P3 is also output at _t28 .

As described above, the monitoring device of this embodiment reports a water leak when the operation time of the water supply pump per unit time exceeds the first set time while the mechanical security device 10 is on alert; Mechanical security device 10
Idling is reported when one operation time of the water supply pump exceeds a second set time regardless of the state of the water pump.

This allows you to know if there is a leak in the water supply equipment or if the water pump is idling.

In the above embodiment, the operation time of the water supply pump per unit time is set using the numeric keypad, but instead of or in addition to this, for example, the average operation time of the water supply pump within the monitoring time of a certain period in the past can be set. It is also possible to automatically calculate the value and use the time obtained by adding a certain value to the average value as the set time.In this way, it is possible to follow changes in the operating time due to aging of the water pump, making it more accurate. can be monitored.

In addition, in the above embodiment, a mechanical security device is used as a monitoring command means, but a separate time switch may be provided to automatically command monitoring at a certain time, or a dedicated monitoring command switch may be installed. may be provided.

Further, in the above embodiment, the alarm is sent to a distant place using a telephone line, but it is also possible to ring a bell at the customer concerned.

As explained above, by using the monitoring device for water supply equipment according to the present invention, it is possible to immediately detect the occurrence of water leakage in unattended water supply equipment or the idling of the water supply pump. Since automatic notification can be sent to a remote monitoring center via the communication line, it is possible to immediately take measures to prevent water leaks or repair water pumps before unattended conditions lead to serious accidents.

[Brief explanation of drawings]

Figure 1 is a configuration diagram showing an example of conventional water supply equipment.
FIG. 2 is a block diagram showing an embodiment of the present invention, FIG. 3 is a block diagram showing an example of the alarm device shown in FIG. 2, and FIG.
The figure is a flowchart showing an example of the initial setting operation of the alarm in Fig. 2, Fig. 5 is a flowchart showing an example of the monitoring operation of the alarm in Fig. 2, and Fig. 6 is a flowchart showing an example of the monitoring operation of the alarm in Fig. 2. FIG. 3 is a diagram showing an algorithm of a specific example of a monitoring operation. 4...Water tank, 5...Water pump, 7...
Elevated tank, 10... Mechanical security device, 11... Key box, 12... Security panel, 13... Communication device,
15...Motor, 17...Magnetic contactor, 18...
Switch, 20... Alarm, 206... Numeric keypad, 207... Display.

Claims (1)

[Scope of claim for utility model registration] (1) A monitoring command to start and end water leakage monitoring after the building is unoccupied in consumer water supply equipment consisting of water meters, water supply pumps, water supply piping, water faucets, etc. means, an operating state detecting means for detecting the operating state of the water supply pump, and an operating state detecting means for detecting the operating state of the water supply pump per unit time based on the detection result of the operating state detecting means when the monitoring command means instructs to start monitoring. Water leakage determination means that measures operating time and determines whether or not the measured operating time exceeds a predetermined first set time;
idling determination means for measuring one operation time of the water supply pump based on the detection result of the operation state detection means and determining whether or not the measured operation time exceeds a predetermined second set time; a first alarm means that issues an alarm when the water leakage determining means determines that the measured operating time has exceeded a first set time; and the idle determining means determines that the measured operating time has exceeded a second set time. a second alarm means that issues an alarm when the alarm occurs; and an alarm transmission means that transmits the alarms from the first and second alarm means to a remote location via a predetermined communication line. A monitoring device for water supply equipment. (2) A monitoring device for water supply equipment according to claim 1 of the utility model registration claim, in which the first notification means and the second notification means are shared.