JPS58265A - Controller of solenoid valve for sprinkler - Google Patents

Abstract

PURPOSE:To sprinkle water properly in a proper time in accordance with insolation quantity, by operating a solenoid valve for a water feeder for a certain time each time the integral quantity of an integrating means, which integrates the electricity generation quantity of a solar battery, becomes a prescribed value. CONSTITUTION:A solar battery 1 which generates electricity by irradiation of solar rays is connected to a watt-hour meter 2 which integrates the electricity generation quantity. This watt-hour meter 2 consists of a field winding 3, an armature 5, a rotary plate 6, a permanent magnet 7, a gear mechanism 8, etc. and generates a generation signal proportional to the electricity generation quantity of the battery 1. A timer 9 is operated by the generation signal to close a make contact 9a for a certain time, and a solenoid valve 10 for a sprinkler is opened through the contact 9a, and water is sprinkled over plants. That is, a quantity of water is sprinkled in accordance with the insolation quantity to prevent withering of plants due to lack of water and a waste of water due to excessive water feed. Though the timer 9 and the solenoid valve 10 are constituted so as to be operated by the energy of an electricity accumulating device 4, they may be operated by, for example, an AC power source.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for a solenoid valve for a water sprinkler.

For example, conventional water sprinklers used at golf courses and farms open and close an electromagnetic valve placed in the middle of a water supply pipe in accordance with the set time of a timer built into the control device. However, with timer control, the solenoid valve operates regardless of whether it is rain or shine, resulting in over- or under-watering.
Inconveniences such as plants dying may occur.

SUMMARY OF THE INVENTION An object of the present invention is to provide a control device that operates a solenoid valve for a water dispenser according to the amount of solar radiation in order to eliminate the above-mentioned drawbacks and to perform appropriate watering at an appropriate time.

This invention is characterized in that a solar cell is used and a solenoid valve is operated for a certain period of time depending on the amount of power generated by the solar cell.

The present invention will be described below based on embodiments shown in the accompanying drawings.

As shown in FIG. 1, a solar cell 1 that generates power by being irradiated with sunlight is connected to an integrating wattmeter 2 that integrates the amount of power generated. This integrating wattmeter 2 utilizes a DC motor, and a field winding 3 is excited by a current flowing to a power storage device 4 as a load, and a current proportional to the voltage generated by the solar cell 1 is passed through an armature 5I. The rotational force of the rotating plate 6 fixed to the armature 5 is proportional to the power which is the product of both. That is, since the metal rotary plate 6 cuts the magnetic flux of the permanent magnet 7, a counter-rotational force proportional to the rotational speed is generated due to the eddy current generated as it rotates, so that the rotational force and the counter-rotational force are balanced. The rotating plate 6 rotates at a speed proportional to the electric power. This rotation is transmitted to the gear mechanism 8I as an interlocking mechanism, and every time the gear mechanism 8I rotates a predetermined number of times or a predetermined angle, a power generation signal proportional to the power generation amount of the solar cell 1 is generated.

A timer 9 connected in parallel to the power storage device 4 is actuated by a power generation signal to close the make contact 9a for a certain period of time. The valve 10 is opened and water is supplied to the plants. In FIG. 1, reference numeral 11 denotes a diode as a backflow prevention element that prevents the energy stored in the power storage device 4 from flowing back to the solar cell. .

The control device of the present invention configured as described above integrates the amount of power generated by the solar cell 1 with the integrating wattmeter 2, and every time the integrated power reaches a predetermined value, a power generation signal is generated and the make contact 9a of the timer 9 is activated. Solenoid valve 1 that is closed for a certain period of time and installed in the middle of water supply
0 and sprinkle water.

In the embodiment shown in FIG. 1 above, the timer 9 and the solenoid valve 10 are configured to operate using the energy of the power storage device 4, but they can also be operated using an AC power source other than the power storage device 4. good. Further, it is desirable that the amount of power generated when the power generation signal is issued can be set arbitrarily. Furthermore, the integrating wattmeter 2 is not limited to the above-mentioned embodiment, but is arbitrary.

Next, another embodiment shown in FIG. 2 will be described.

As shown in the figure, a solar cell 1 is connected to a power storage device 4 via a diode 11, and a voltage detector 13 equipped with a variable resistor 12, etc. is inserted in parallel to the power storage device 4 so that the charging voltage can be arbitrarily set. Yes, it is. This voltage detector 13 is a first voltage detection section that generates a set signal and a reset signal to a subsequent flip-flop 14 when the voltage detected via the variable resistor 12 reaches a first value and a second value. 15 and a second voltage detection section 16, the voltage detector 13 conducts the transistor 17 and opens the solenoid valve 10 (in addition, the first The value is larger than the second value, and these values may be set arbitrarily.In addition, in this case, the solenoid valve 10 is connected to the power storage device 4.
Although it may be configured to operate from a power source other than the above, in that case, it is necessary to provide a circuit that discharges the energy of the power storage device 4 while the solenoid valve 10 is operating.

In the embodiment shown in FIG. 2 above, the amount of power generated by the solar cell 1 is detected by the charging voltage of the power storage device 4, and the solenoid valve 10 is operated in accordance with the charging voltage, so there is no need to provide a timer. do not have.

Further, FIG. 3 shows a third embodiment.

This is when the power generation amount of the solar cell 1 is charged by the power storage device 4, and when the voltage detector 18 connected in parallel to the power storage device 4 detects that the charging voltage has reached a predetermined value, the AC power source
A timer 20 connected to the terminal 9 operates for a certain period of time, closes the two make contacts 20a, energizes the discharge resistor 21 of the power storage device 4, and opens the solenoid valve 10. In this third embodiment, the electromagnetic valve 10 is operated for a predetermined period of time after the charging voltage of the power storage device 4 reaches a predetermined value.

This invention corresponds to the amount of solar radiation (approximately proportional) as shown below.
Based on the amount of power generated by the solar cells, the solenoid valve for the water supply is operated for a certain period of time to water the plants, so the amount of watering can be obtained according to the amount of solar radiation, and plants will not die due to lack of water. And waste of water due to excessive water supply will be eliminated.

In addition, by operating the solenoid valve for the water supply using solar cells, the electric-powered system is free of charge (it has 0 defects and 11 points).

[Brief explanation of drawings]

Figure 1 is a circuit diagram showing an example of this invention, Figures 2 and 3 are
The figure is a separate circuit diagram. 1... Solar cell, 2... Integrating wattmeter, 4... Power storage device, 9.20... Timer, 9a... Make contact,
10...Solenoid valve, 13.18...Voltage detector Patent applicant Sumitomo Electric Industries, Ltd.

Claims (8)

[Claims] (1) It consists of a solar cell and an integration means for integrating the amount of power generated, and each time the integration amount of the integration means reaches a predetermined value, a solenoid valve installed in the middle of the water supply pipe is operated for a certain period of time. A control device for a solenoid valve for a water sprinkler, characterized by: (2) The above-mentioned integrating means includes an integrating wattmeter and a timer, and each time the integrating wattmeter reaches a predetermined value, the timer is operated for a certain period of time, and the timer controls the opening and closing of the solenoid valve. A control device for a solenoid valve for a sprinkler according to scope 1. (3) A power storage device charged by the solar cell is connected downstream of the integrated wattmeter via a backflow prevention means, and the solenoid valve is operated by the power stored in the power storage device. A control device for a solenoid valve for a water sprinkler according to claim 2. (4) The integration means includes a power storage device that charges the solar cell through a backflow prevention means, and a voltage detector that detects the charging voltage, and detects when the charging voltage exceeds a predetermined value. 2. The control device for a solenoid valve for a water sprinkler according to claim 1, wherein said solenoid valve is operated for a certain period of time upon detection by a detector. (5) The voltage detector includes means for emitting a signal at a first value of the charging voltage and stopping the signal at a second value smaller than the first value, and the period during which the above-mentioned signal is emitted is a certain period. A control device for a solenoid valve for a water sprinkler according to claim 4. (6) Claim 4, characterized in that a timer is provided that operates when the voltage detector detects that the charging voltage exceeds a predetermined value, and the timer operates for a certain period of time. A control device for the solenoid valve for a water sprinkler described above. (7) Control of the solenoid valve for water sprinkler according to any one of claims 4 to 6, characterized in that the solenoid valve is operated by electric power stored in the power storage device. Device. (8) Control of the solenoid valve for water sprinkler according to claim 2, 4, 5, or 6, characterized in that the solenoid valve is operated by electric power other than the power storage device. Device.