VEHICLE WITH SIREN VICINITY WARNING SIGNAL EMITTER

Abstract: In the warning signal emitter a first section is mounted on a vehicle with siren, and is designed to transmit electromagnetic waves, consisting of a carrier modulated in accordance to coded signals, when the siren is operated, while a second section is mounted on a vehicle, in a place near to the driver, and is designed to receive the electromagnetic waves and to operate a lamp and/or a buzzer when it recognises the coded signals.

Description: VEHICLE WITH SIREN VICINITY WARNING SIGNAL EMITTER TECHNICAL FIELD The invention relates to the technical field concerned with detectors of certain type of signals, and particularly of acoustic signals emitted by first aid vehicles or quick use vehicles (e.g. ambulances, fire brigade vehicles, etc. ) or by speedy intervention vehicles used by operative, vigilance or repression bodies (e.g. police, revenue officiers, etc. ) . BACKGROUND ART It is well known that drivers of vehicles which are located in a place where the above mentioned first aid vehicles happen to run, must make it easier for this latter to travel in any possible way, when • the siren is operated. As a matter of fact this facilitating action can take place only if the driver heard the acoustic signal from the siren. But this is not always possible, e.g. for deaf people or for those who have problems with hearing, or because of other incidental causes, for instance due to using a protective crash helmet. Along with the fact that it is not always possible to see the first aid vehicle coming up, it is an inconvenience that could bring about disastrous effects for people and vehicles. DISCLOSURE OF THE INVENTION The object of the invention is to propose a warning signal emitter that operates acoustic or visual signaling means mounted on a vehicle near to the driver as a consequence of acoustic signals being emitted by the sirens mounted on said first aid or quick use vehicles, when they are within a radius of a few hundred meters. What above is obtained by means of a vehicle with siren vicinity warning signal emitter, that includes: a first section mounted on said vehicle with siren and connected to said siren, said first section being designed to irradiate the space surrounding said vehicle with siren with electromagnetic waves modulated in accordance to coded signals, as a * consequence of said siren being operated; a second section, mounted on a vehicle in a place near to the driver, designed to receive said electromagnetic waves and to operate acoustic and/or visual signaling means as a consequence of the recognition of said coded signals. BRIEF DESCRIPTION OF DRAWINGS The characteristic features of the invention are pointed out in the following, with a particular reference to the accompanying drawings, in which: - Fig. 1 is a possible block diagram of a first section of the warning signal emitter; - Fig. 2 is a possible block diagram of a second section of the warning signal emitter. MODES OF CARRYING OUT THE INVENTION Referring now to these drawings, the warning signal emitter is formed by a first section (Fig. 1) mounted on a first aid or quick use or a speedy intervention vehicle, that is of course provided with a siren, and by a second section (Fig. 2) mounted on a vehicle, in a place near to the driver. The first section includes three units A,B,C first, second and third respectively, connected in cascade to each other. The first unit A is connected to the siren via an interface, and has the task of detecting when the siren is operated. The second unit B includes a RF generator and a coder or modulator (both of known type). The third unit C includes a power amplifier stage connected to a transmitting antenna D, or transmitter. The second section comprises three units E,F,G fourth, fifth and sixth respectively, connected in cascade to each other. The fourth unit E includes a receiver (of known type) , provided with a receiving antenna H. The fifth unit F includes a demodulator or decoder, whereas the sixth unit G includes visual and/or acoustic signaling means (e.g. a lamp and/or a buzzer) . When the siren is operated, the first section is also operated. Then the transmitter C, through the antenna D, irradiate the space surrounding the first aid vehicle with electromagnetic waves formed by a carrier of preset frequency modulated in accordance with code signals. These waves are picked up by the antenna H, and the particular code is recognized by the decoder F, which in turn operates the signaling means G. It is necessary for the transmitter to irradiate with signal as powerful as to be received and recognised, within a radius of at most 300 m; this distance is more than enough to allow the driver to move the vehicle to a good position for facilitating the transit of the vehicle with siren. INDUSTRIAL APPLICABILITY The visual signaling means are specifically used for deaf people, while acoustic signaling means can be advantageously used by drivers wearing a protective crash helmet. In this case the buzzer can be located inside the helmet. The technical feature herein porposed gives the possibility to warn the drivers about the coming up of vehicles with a siren that is operated. In this way possible crashes with the first aid and similar vehicles are avoided.

Claims: CLAIMS 1. Vehicle with siren vicinity warning signal emitter, characterized in that it includes: a first section mounted on said vehicle with siren and connected to said siren, said first section being designed to irradiate the space surrounding said vehicle with siren with electromagnetic waves modulated in accordance to coded signals, as a consequence of said siren being operated; a second section, mounted on a vehicle in a place near to the driver, designed to receive said electromagnetic waves and to operate acoustic and/or visual signaling means as a consequence of the recognition of said coded signals. 2. Warning signal emitter as in Claim 1, characterized in that said first section includes: a first unit (A) , connected to the siren via an interface; a second unit (B), connected in cascade to said first unit and designed to output a signal carrier, modulated in accordance with coded signals, when the siren is operated; and a third unit (C), connected in cascade to said second unit (B), designed to irradiate the space surrounding said vehicle with siren with electromagnetic waves corresponding to said modulated carrier, by means of a related transmitting antenna (D); whereas said second section includes: a fourth unit (E), designed to receive said electromagnetic waves through a receiving antenna (H); a fifth unit (F), connected in cascade to said fourth unit (E), for recognizing said coded signals; a sixth unit (G), connected in cascade to said fifth unit (F), including acoustic and/or visual signaling means, which are operated by said fifth unit (E) as a consequence of the recognition of said coded signals.

Inventors: LABANTI MARCO, LABANTI, MARCO
Applicants: LABANTI MARCO, LABANTI, MARCO
Application year: 1992
Main classification: B60Q1
IPC codes: B60Q1