JPH08281166A - Fountain apparatus - Google Patents

Abstract

PURPOSE: To improve exhibition effect by changing the height of a fountain continuously and freely corresponding to the change of the distance from a human hand. CONSTITUTION: The opening of a solenoid valve 4 placed in piping 3 between a pump 1 and a fountain nozzle 2 is arranged to be changed continuously and linearly corresponding to the output of an analog displacement sensor 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fountain device which is installed in, for example, a public plaza or a playground facility and contributes to the enhancement of the scenery. More specifically, the height of the fountain can be arbitrarily changed. The present invention relates to a fountain device.

[0002]

2. Description of the Related Art In a conventional fountain device of this type, an electric valve is interposed in a pipe extending between a pump and a fountain nozzle, and the opening of the electric valve and the rotational speed of the pump are constantly input (O).
According to the N) signal, the opening degree and the pump rotational speed set in advance in a plurality of stages are adjusted so that the height of the fountain from the fountain nozzle can be changed in a plurality of stages.

[0003]

In the conventional fountain device having the above-described structure, the height of the fountain is changed to a preset height corresponding to a plurality of stages of valve opening and pump rotation speed. However, the height of any fountain cannot be expressed. In addition, there is an input signal for the water flow rate accompanying the opening adjustment of the electric valve, because the degree of loss due to the water flow resistance of the valve does not change in a linear function, but changes in a higher-order function such as a quadratic function. Depending on the opening of the time, the fountain height was lower than expected or higher than expected, and it was not possible to obtain the fountain height and the ornamental effect that matched the consciousness.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fountain device capable of continuously changing the height of the fountain to an arbitrary height to enhance the fun of the fountain. There is.

[0005]

In order to achieve the above object, a fountain device according to the invention of claim 1 has an electric valve interposed in a pipe extending between a pump and a fountain nozzle, and an electric valve of the electric valve. And an analog sensor for controlling the opening degree.

In particular, in the fountain device described above, the second aspect
As described above, the analog sensor is a displacement sensor, and a calculation is performed between the displacement sensor and the electric valve to adjust the valve opening so as to linearly change the fountain height according to the output of the displacement sensor. It is preferable that the device is inserted.

[0007]

According to the first aspect of the present invention, when the analog sensor detects, for example, the movement of a human hand, the opening of the electric valve changes proportionally according to the output change of the analog sensor. As a result, the height of the fountain can be continuously and arbitrarily changed, and the change in the height of the fountain can be interesting, and the interest of the fountain can be enhanced.

In particular, according to a second aspect, a displacement sensor is used as an analog sensor, and an arithmetic unit is interposed between the displacement sensor and the electric valve.
The height of the fountain can be linearly changed in accordance with the adjustment of the opening of the electric valve according to the output of the displacement sensor.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a fountain device according to an embodiment of the present invention. In FIG. 1, 1 is a pump, and 2 is a fountain nozzle for ejecting water W pumped from the pump 1 through a pipe 3. An electric valve 4 is provided in the middle of the pipe 3.
Is intervening. Reference numeral 5 is an analog sensor, which is an analog displacement sensor for detecting movement of a human hand, and an output signal thereof is inputted to a control end of the electric valve 4 via an amplifier 6.

In the fountain device having the above structure, when a person's hand approaches or moves away from the analog displacement sensor 5, this is detected by the analog displacement sensor 5, and the displacement signal is amplified by the amplifier 6. It is input to the control end of the electric valve 4, and the opening degree of the electric valve 4 continuously changes. As a result, the height of the fountain from the fountain nozzle 2 can be continuously changed according to the movement of the human hand, as shown in FIG.

FIG. 3 shows another embodiment of the present invention. Between the analog displacement sensor 5 and the electric valve 4, the sensor 5 is provided.
The calculation unit 7 for adjusting the valve opening is inserted so that the height of the fountain changes linearly according to the output of the above. Other configurations are the same as those in FIG. And the description thereof will be omitted.

In the fountain device having the structure as shown in FIG. 3, when the analog displacement sensor 5 is arbitrarily moved, for example, by bringing a person's hand close to or away from the analog displacement sensor 5, a signal detecting the amount of displacement is calculated as described above. Electric valve 4 through device 7
Is applied to the height of the fountain with respect to the above displacement,
As shown in FIG. 4, the height of the fountain can be continuously changed linearly so that the height of the fountain can be changed according to the viewer's intention.

In each of the above embodiments, the analog displacement sensor 5 is used as the analog sensor, but the same effect can be obtained by using another analog sensor such as a load sensor or a strain sensor. It is possible.

[0014]

As described above, according to the invention of claim 1, the opening of the electric valve is controlled by the output of the analog sensor. The height of the fountain can be continuously changed to an arbitrary height, and the interest in changing the height of the fountain can be increased to enhance the interest of the fountain.

In particular, as described in claim 2, by using an analog displacement sensor and inserting a calculator between the displacement sensor and the electric valve, the sensor is irrelevant regardless of the loss characteristic of the electric valve. The height of the fountain is linear according to the output of
The height of the fountain can be changed continuously so that the desired height of the fountain can be realized.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a fountain device according to an embodiment of the present invention.

FIG. 2 is a characteristic diagram showing a relationship between sensor output and fountain height in the fountain device of FIG.

FIG. 3 is a configuration diagram showing a fountain device according to another embodiment of the present invention.

FIG. 4 is a characteristic diagram showing a relationship between sensor output and fountain height in the fountain device of FIG.

[Explanation of symbols]

 1 Pump 2 Fountain Nozzle 3 Piping 4 Electric Valve 5 Analog Displacement Sensor 7 Computing Unit

Claims (2)

[Claims] 1. A fountain device comprising: an electric valve interposed in a pipe extending between a pump and a fountain nozzle; and an analog sensor for controlling an opening of the electric valve. 2. The analog sensor is a displacement sensor, and the valve opening is adjusted between the displacement sensor and the electric valve so as to linearly change the fountain height according to the output of the displacement sensor. The arithmetic unit is inserted.
The fountain device described.