FR2827681A1 - Control of level of water in a swimming pool with radio communication between level sensor and filling control box, uses magnetized float to operate switch which activates radio to transmit to poolside control box - Google Patents

Abstract

The regulator has a level sensor fitted in the skimmer unit (8), with radio communication between sensor and filling controller. The sensor has a magnetized float (3) which operates a switch unit. The switch controls emission of a radio signal which activates the solenoid valve controlling filling of the pool. The communication is intermittent to save energy, with a periodic test signal sent.

Description

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The present invention relates to a device which automatically regulates the water level of a swimming pool using a system placed in the "skimmer" of the swimming pool.

Currently, regulation is traditionally carried out using a level probe electrically connected to an electrical box which manages the opening and closing of a filling solenoid valve. Therefore, and in particular in the case of an existing installation, it is necessary to make a trench to bring the son of the probe to the electrical box.

The device according to the invention makes it possible to remedy this problem by using a radio wave transmission between the emitting part placed in the "skimmer" (FIG. 1) and the receiver generally placed in the technical room.

Nomenclature figure 1: part 1 curbstone part 2 transmitter support part 3 float part 4: "skimmer" cover part 5 pipe to filtration part 6 pool water part 7 "skimmer" basket - part 8: "skimmer". The "skimmer" of a swimming pool is a part which collects surface water in order to send it to the filter of the hydraulic circuit.

The level detection is done by means of a magnetic float (part 11 figure 2) and an ILS bulb (part 12 figure 2) positioned on the electronic card of the transmitter. This device makes it possible to avoid the passage of a wire between the float and the electronic card, this therefore contributes to the good sealing of the system. An "ILS" bulb is a contact which can close when the axis of this contact is close to and parallel to the pole of a magnet.

The retaining plug (part 13 figure 2) with its nut (part 14 figure 2) allows:
With the support to be fixed on the hood of the "skimmer" (part 15 figure 2).

- the closing of the support (with sealing ensured by teflon tape).

- (but also) the adjustment of the filling level of the swimming pool. Indeed, by tightening more or less the nut (part 14 figure 2) on the plug (part 13 figure 2), it is possible to vary the position of the support and therefore to adjust the filling level. This therefore allows the system presented to adapt to each type of swimming pool.

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The electronic card of the transmitter contains a microprocessor allowing: - to better manage the energy contained in the battery.

 - to warn the receiver when the energy level contained in the battery becomes too low.

The receiver is also composed of an electronic card and a microprocessor allowing: - to manage the opening and the closing of the filling solenoid valve - to warn the user when no signal is received for more than 30 minutes - to secure the system by stopping the solenoid valve when an anomaly appears (no more radio transmission or solenoid valve opening for more than 6 hours) The device according to the invention makes it possible to best manage the energy contained in the battery. To achieve this function, the initial assumption is to say that the pool is more often at the high level than at the low level. At high level, the float is not aligned with "ILS", which has the effect of leaving the microprocessor in sleep and thus avoiding any consumption of energy.

In addition, communication between the transmitter and the receiver is not continuous. As the level variation phenomena in the swimming pool are relatively slow, the transmitter will transmit to the receiver an image of the water level every 30 minutes or when the level changes.

Claims (4)

CLAIMS 1) Device for automatically controlling the level of a swimming pool, characterized in that the transmission of information between the level detector (placed in the swimming pool) and the electrical control box for the filling solenoid valve (placed in the technical room) is done by radio transmission using electronic modules on the transmitter and receiver. 2) Device according to claim 1, characterized in that the clamping screw of the float support on the "skimmer" also allows to adjust the filling level. 3) Device according to claims 1 and 2, characterized in that the level detection is done by means of a magnetic float and an "ILS" bulb placed on an electronic card inside the support avoiding the passage of a son in the support and thus promoting the good sealing of the assembly. 4) Device according to claims 1,2 and 3, characterized in that the communication between the transmitter and the receiver is not done continuously but according to a periodic process ensuring optimal management of the energy necessary for this communication.