FR2935519A1 - DEVICE FOR NOT LOSING A KEY KIT - Google Patents

Abstract

The present invention relates to a device comprising on the one hand a mini remote control with reduced radio range that is attached to the keychain. And on the other hand a mini-receiver which is equipped with an alarm that snaps when it is out of radio range. The mini-receiver of this device following the folder is intended to be installed on a T.P.

Description

This filing concerns devices to not lose the keys.

Damage caused by the loss of keys is known. To avoid this problem, some use necklaces, others use coded marking, but the majority do nothing and are therefore quite vulnerable.

What we want in this kind of concern that can happen when we leave home is not to misplace them; concretely to be notified as soon as the process of loss starts.

The risk of losing the keys is most often proportional to the distance between the keys and its holder. It engages in a logical way as soon as the distance between the keychain and its owner reaches a certain distance, usually less than twenty meters. It suffices to have a small device that will warn when it has detected that the threshold where the loss protocol is triggered is reached.

For this, we create a reduced-scope radio link between the owner and his keychain, which will warn the latter at a specific time that the loss protocol of the so-called keychain snaps into action.

This device provides an effective and original technical solution to this problem.

To achieve this we equip a mini-remote keys that are thus connected by radio to a mini-receiver normally installed in the factory on a mobile phone. As the majority of people wear one on them, we use this interesting feature to make this device work; taking advantage of the battery and the ringing of the telephone. The radio link is in principle 434 or 868, see 2400 MHz and is independent of networks G.S.M. in 900 and 1800 MHz reserved only for T.P. frequencies that are encrypted and also prohibited. 25 (When dialing a number on a mobile, it sends digital signals that pass through one or more phone relays to arrive on the desired mobile .... This gives a ringtone and the opportunity to converse.)

The mini-receiver of this device is equipped with an electromechanical relay (or similar) that controls the alarm. The transmitter has a limited range (and adjustable) generally less than twenty meters, preferably 10 meters. When the transmitter is in operation, it sends a signal to the receiver which keeps it energized the electromechanical relay, thus neutralizing the alarm, but if the emission radius is exceeded because of the distance between the transmitter and the receiver, the latter no longer receiving the order to keep closed the power supply of the alarm, the latter will engage, reminding the owner. (For the sake of simplification the mini-remote control can be equipped with a clock that will control its start and stop - The mobile phone to avoid radio interference, will have the opportunity to be programmed to disengage the connection during the conversation .)

As a variant, it will be possible to use a mini-receiver entirely independent of a TP in the appearance of a small box, such as a parallelepiped, equipped inter alia with an alarm system (which may be either: bell, melody, vibration etc ... be visual: flashing lamp or not, bi-color indicator etc ...). The mini receiver can be worn as a pendant, bracelet, or just with you.

To have a real interest these devices will have to be of discrete size, of affordable cost and of weak consumption. Which is possible with modules of radios of very small space which one can find among others in the specialized wholesale which are often a small price. and very low consumption. To further reduce the consumption of the transmitter it will be possible to incorporate a sampler.

Claims (1)

CLAIMS 1 °) Device to alert if necessary the owner of a keyring, it is about to lose, including a mini-radio receiver (ie operating with electromagnetic waves whose frequency is less than or equal to 30 GHz and can operate in Europe preferably in 434, 868, or 2400 MHz) receiver that is installed in the factory in a mobile phone The telephone network has its own frequencies which are in Europe in general 900 and 1800 MHZ Receiver receiving signals from a short-range mini-remote control that is attached to the key ring. 2 °) Device according to claim No. 1 characterized in that the mini-receiver is equipped with an electromechanical relay (or the like, such as solid state relay, electronic switch) that the transmitter holds closed as it receives the order, that is to say as long as it is within reception range. Outside the reception range, the electromechanical relay allows the current to pass thereby activating the alarm. 3 °) Device according to claims 1 and 2 characterized in that the alarm can be sound (electric bell, buzzer, melody, vibrator). 4 °) Device according to claims 1 and 2 characterized in that the alarm can be visual (message appearing on the screen of the mobile, flashing lamp or not, bi-color indicator [Bi-color tag indicating according to the color displayed if the alarm is activated or not) 4 2935519 5 °) Device according to claims 1 and 2 characterized in that the receiver may be alternatively contained in a small housing (a small parallelepiped rectangle for example) that the we carry on ourselves. 6 °) Device according to claim No. 1 characterized in that the 5 mini-remote control for the sake of simplification may be equipped with a clock that will control its start and stop. 7 °) Device according to claim No. 1 characterized in that the mini-receiver (mobile phone version) alternatively to avoid radio interference, will be designed to disengage during the conversation (manual or programmed). 8 °) Device according to claim No. 1 characterized in that the scope of the emission may be adjustable. 9 °) Device according to claim No. 1 characterized in that the transmitter, alternatively, to reduce consumption will be equipped with a sampler.