FR2629934A1 - Radio remote control system suitable for signalling the location of a vehicle to its owner from any parking area - Google Patents

Abstract

The present invention consists in locating a vehicle, on any parking area, for the benefit of its owner. The process consists in sending out a train of waves which is coded with the aid of a pocket microtransmitter towards a miniature receiver situated in the vehicle.

Description

 Radio remote control system suitable for signaling the location of a vehicle to its owner in any parking area.

 This system sees its place in everyday life and for general public use.

 Currently only tracking systems exist for small everyday objects that are localized for example by whistling and which emit in return a characteristic sound.

 This Remote Control Device includes a battery-powered micro-transmitter that generates coded waves, and a receiver powered by a battery capable of decoding them to activate a tracking device, for example an audible or (and) light alarm.

A use button (1) on the micro-transmitter (a) supplies, when activated, a coding circuit (2), a modulation generator (3) and a transmitter
High Frequency (4). The High Frequency pulse trains coded according to a code preprogrammed on the code selector (5) are sent to the loop antenna (6) during the activation of (1).

The miniature receiver (b) receives the signals on the antenna input circuit (7)
High frequency coded which are transmitted on the High Frequency tuning circuit (8) then on the High Frequency receiver (9) and finally on the decoder (10) which then actuates the two relays (11) and (11 '). The antenna output circuit (12) reproduces the signals entering at (7).

The micro-transmitter (a) contains a coding selector (5) constituted by metallic jumpers, whether or not sectioned, which constitutes a logic programming code.

 This logic code is read by a pulse in time position encoder (2) which transmits, when powered by (1), logic levels to the "AND" logic gate (13).

The modulation generator (3) transmits by (13) a modulation frequency. The signals at the output of the logic gate (13) activate the input of the High transmitter
Frequency (4). The transmitter then feeds the loop antenna (6) constituted by a wire wound in a spiral.

 The waves thus emitted by the activation of a switch on a micro-transmitter are characteristic of the programming code established on this particular micro-transmitter.

 The receiver (b) contains a coding selector identical to (3) and programmed identically by the set of metal jumpers.

 The coded signal received by the High Frequency receiver (9) through the antenna circuit (7) is transmitted to the decoder (10) which compares the code received with the preprogrammed code. If the codes are identical, the relays (11) and (11 ') are actuated by (10) throughout the duration of reception of the code if it is valid.

 The bonding of the two relays (11) and (11 ') on the miniature receiver (b) is characteristic of the reception of a coded wave consistent with the decoding process of the decoder (10).

 Any Remote Control system based on the principle of a code transmitted by any transmitter by the game of two identical hardware or software programs and making it possible to identify the positioning in the space of said receiver may also be suitable.

 The drawing in Figure 1 represents the Remote Control system in its environment consisting of the micro-transmitter (a) and the miniature receiver (b) inserted in the antenna circuit of the car radio of a motor vehicle for example.

The said remote control system at
distance activates the horn and the headlights of the vehicle concerned, thus audibly and visually indicating where the vehicle concerned is parked.

 The Remote Control system consists of two parts: First, the battery-powered micro-transmitter carried by the operator; Second, the miniature receiver located in the vehicle to be located, powered by battery or by the vehicle and which can be inserted, for example, between the vehicle antenna and the car radio.

 The Remote Control system works in a simple way, that is to say that a small pocket box comprising a radio transmitter triggers a receiver installed on board the vehicle concerned at a maximum distance of 500 meters by a coded wave train. . When a tactile electrical contact of this pocket box is pressed, a radio wave train is transmitted to the associated receiver. If this has the same coding key, two electrical contacts close for a few seconds; one operates the headlights, the other the horn.

Claims (6)

 1) Remote control device characterized in that it comprises a mi  battery powered cross transmitter that generates coded waves and a powered receiver  by a battery capable of decoding them to activate a tracking device by  example an audible or (and) light alarm.  activation of (1).  programmed on the code selector (5) are sent to the loop antenna (6) for  High Frequency (4). High Frequency pulse trains coded according to a pre code  activated, a coding circuit (2), a modulation generator (3) and a transmitter  A use button (1) on the micro-transmitter (a) powers; when he is  signals entering in (7).  then the two relays (11) and (11 '). The antenna output circuit (12) reproduces the  then on the High Frequency receiver (9) and finally on the decoder (10) which operates High Frequency coded which are transmitted on the High Frequency tuning circuit (8)  -The miniature receiver (b) receives the signals on the antenna input circuit (7)  2) Remote control device according to claim 1 characterized in that the micro-transmitter (a) contains a coding selector (5) consisting  by metal jumpers, sectioned or not, which constitutes a program code  logical mation.  "AND" (13).  which transmits when powered by (1) logic levels to the logic gate  This logic code is read by a pulse in time position encoder (2)  spiral.  (4). The transmitter then feeds the loop antenna (6) constituted by a wire wound in  at the output of the logic gate (13) activate the input of the High Frequency transmitter  The modulation generator (3) transmits a modulation frequency. The signals  3) remote control device according to claims 1 and 2 charac  terrified by the fact that the waves thus emitted by the activation of the switch (1)  on the micro-transmitter (a) are characteristic of the programming code established on  a particular micro-transmitter.  4) remote control device according to claims 1 and 3 charac  terrified by the fact that the receiver (b) contains a coding selector identical to (5) and programmed in an identical manner by the set of metal jumpers.  The coded signal received by the High Frequency receiver (9) through the antenna circuits (7) is transmitted to the decoder (10) which compares the code received with the preprogrammed code. If the codes are identical, the relays (11) and (11 ') are actuated by (10) throughout the duration of reception of the code if it is valid.  5) Remote control device according to claims 1 and 4 characterized in that the bonding of the two relays (1f) and (11 ') on the miniature receiver (b) is characteristic of the reception of a coded wave consistent with the decoder decoding process (10).  6) Remote control device according to claims 1, 3 and 4  that any Remote Control system based on the principle of a code issued by any transmitter associated with any receiver by the game of two identical hardware or software programming and making it possible to identify the positioning in the space of said receiver may also be suitable.