RU2296682C1 - Voice-frequency siren with alarm pause effect - Google Patents

Abstract

FIELD: transport engineering; security systems.

SUBSTANCE: invention relates to signaling device for antitheft systems and it is designed for sound warning. Proposed device has first sound module installed in siren housing for recording and playing back sound messages consisting sounds of siren and voice messages separated from siren sounds by pause. Recording is done from second module provided with recording and playback mode control buttons in form of suspender. Device contains also subsonic signal shaper, photo sensor and electronic switch providing selection of programs of sound messages for day and night. In pause between sound messages, device radiates subsonic signals providing effect of alarm pause near automobile.

EFFECT: improved efficiency of protection of vehicles against unauthorized use.

1 dwg

Description

The invention relates primarily to the technique of protecting vehicles (TS) from unauthorized access and can be used as a signal device for transport security and anti-theft systems.

The main requirements for signaling devices of security and anti-theft systems of the vehicle are the presence of a deterrent effect in their sound, the possibility of their covert placement and unambiguous identification by the vehicle owner of the fact of an attack on his car. The latter is especially true in conditions of high concentration of various vehicles, for example, in the city. These requirements, as a rule, are achieved to some extent by complicating the spectral composition of sounds emitted by electronic sirens and placing them in the engine compartment of a car.

So, in the well-known electronic siren and a method for simulating a multi-frequency tone signal [1], comprising an input signal generator, a complex signal generator, a loudspeaker and a processor controlling the processing of audio signals, by adding different signals, a high individuality of the siren sound is achieved.

Nevertheless, in the conditions of mass production of this device, the sounding individuality achieved by complex circuit solutions is practically lost, since it will be duplicated by similar devices installed on various vehicles. Another disadvantage of this device is the lack of any generally accessible semantic information in its complex, multi-frequency signal that would allow the vehicle owner, police and witnesses to quickly and unequivocally determine the brand, color and registration number of the attacked car.

It is also known a device for recording and reproducing words for scaring away thieves [2], which is a prototype of the present invention, comprising in one housing a low-frequency amplifier, a loudspeaker and a sound module, consisting of a digital circuit for recording / reproducing sound messages, a microphone and means for controlling the operating modes of the device in the form of buttons and keys, which sequentially or in the preferred order for the user plays voice messages one at a time with the possibility of alternating them with tonal sounds ovymi signals.

The disadvantages of the prototype device is the following:

- the device is not able to respond to changes in such an external factor as the illumination of the parking lot and the guarded vehicle itself, which can lead to a loss of effectiveness of alarm voice messages containing information about the vehicle’s external distinguishing features, such as color, number and make of the vehicle, since the information necessary and appropriate during the day, in the dark, does not find visual confirmation from possible witnesses of the attack on the vehicle or the police;

- between sound messages there must be a pause of several seconds, the need for which is dictated by the characteristics of the human hearing organs, in particular, the presence of adaptation time during the transition from nonsense (tonal) sounds to semantic speech information. These pauses not only do not have a frightening effect for criminals, but also enable the criminal to calmly assess the situation, the degree of threat to himself and take measures to neutralize the vehicle’s security system;

- the presence of control elements of the device’s operating modes directly on its body makes it difficult to use it as a signal for the car’s security systems, which is desirable to locate covertly and in a remote place of the car, which, of course, will complicate access to the control elements of the device’s operating modes and recording audio messages from remote sources of sound information.

The present invention is directed to addressing the above disadvantages of the prototype device.

The objective of the proposed technical solution is to ensure:

- the ability to automatically change the alarm message program at various levels of illumination of the vehicle;

- the alarm effect for a person in the immediate vicinity of the vehicle in the pauses between sound tonal and voice messages.

The problem is solved due to the fact that the well-known device for recording and reproducing words for scaring away thieves, which contains the first sound module, low-frequency amplifier and loudspeaker in one housing, additionally introduces an infrasound vibrator, a photosensor, an electronic key and a second sound module integrated structurally into in the form of an external keychain with a button for switching on the recording mode of the first sound module and having remote communication with the first sound module, the first output of which is connected n with the control input of the infrasonic signal former connected to the input of the low-frequency amplifier and to the second output of the first sound module connected to its control input of the playback mode with the signal output of the anti-theft alarm system of the car, and to the control input of the change of sound messages in the playback mode - with the output of the electronic key, the control input of which is connected to the output of the photosensor.

The essence of the invention is illustrated in the drawing, in which the following notation is used:

1 - remote keychain; 2 - the second sound module; 3 - button for controlling the recording mode of the second sound module; 4 - button for controlling the playback mode of the second sound module; 5 - the first sound module; 6 - button for controlling the recording mode of the first sound module; 7 - photosensor; 8 - electronic key; 9 - low frequency amplifier; 10 - loudspeaker; 11 - shaper infrasonic signals.

The device operates as follows.

Previously, the user, using the remote control 1, records in the second sound module 2 using the record button 3 various tonal and voice sound messages, preferred for various conditions of ambient light of the car. For example, a voice message such as “Attention, an attempt to steal a Honda car in black with a license plate number A 2222 TM” is most applicable to daylight hours. At night, a voice message, in addition to signs characterizing the vehicle, may also contain information that could attract the attention of outsiders or scare away the offender. For example, the phrase “You are being shot by a hidden car camera. Tomorrow you will find yourself in a police file cabinet! ”Most likely it will scare away the thief of audio equipment, and a voice message saying that the vehicle is equipped with a global search engine transmitter will make the professional hijacker think about the appropriateness of stealing the vehicle. There is also no doubt that voice messages with a strongly pronounced emotional coloring attract attention to the witnesses' TS to a greater extent, which in itself complicates the actions of the criminal. Tone sound signals - the sounds of sirens, calls and similar ones can be recorded by the user in keyfob 1 from remote sound sources as well as meaningless sounds of natural origin, for example, the roar of a large predator. After compiling the sound data base in the second sound module 2, the user, using the play mode control button 3 in the key fob 1, preferably overwrites the pre-selected sound messages into the first sound module 5, putting it into the recording mode with button 6.

When the anti-theft system of the car is triggered from its signal output, an alarm signal in the form of a pulse with a voltage of plus 13.6 V is applied to the input of the start of the playback mode of the first sound module 5. At the same time, depending on the level of illumination of the vehicle, the signal from the photosensor 7 controls the state electronic key 8, which, in turn, controls the change of sound messages in the first sound module 5 in the playback mode corresponding to a high or low level of illumination of the vehicle. From the output of the first sound module 5, the signal enters the first input of the low-frequency amplifier 9, where after amplification it enters the loudspeaker 10 and is radiated into the surrounding space. The playback cycle of either of the two audio message programs includes pauses between voice and voice messages. With the onset of a pause, a pulse whose duration corresponds to the duration of the pause followed by it arrives from the first sound module 5 to the infrasound signal generator 11, allowing the formation and passage of the infrasonic vibrations generated by it in the range of 3-13 Hz to the second input of the low-frequency amplifier 9 for further amplification and loudspeaker playback 10.

Inaudible to the hearing organs, but perceived by the human vestibular apparatus, sound vibrations in the range of 3-13 Hz are defined by most people as a source of anxiety of unknown origin, causing anxiety and a sense of danger. The presence of a similar reaction to infrasound in humans and, to a greater extent, in animals is explained by the fact that powerful infrasonic vibrations in nature are precursors to earthquakes or accompany them [3]. In the same way, the present invention implements the giving of an alarming character to the pauses between audible audio messages.

This effect can be manifested only in the immediate vicinity of the vehicle, due to both a limitation, for safety reasons, of the allowable sound pressure level in such devices at 80 dB from the hearing threshold, and a decrease in the sensitivity of human perception of acoustic waves with a frequency below 20 Hz by 60 dB compared with the same sound pressure level at a frequency of 1000 Hz [4].

Thus, while preserving all the advantages of the prototype device, the proposed technical solution eliminates its main disadvantages through the acquisition of such features as the ability to change the sound message programs for various lighting conditions of the vehicle, giving the alarm effect to pauses between sound messages and the ability to place a voice-tonal siren in the inaccessible place of the car.

In the proposed device, the circuitry of all nodes individually is well known, and it is preferable to create sound modules on the basis of microcircuits, which have the common name "chip corder", which are a single-chip device for recording and reproducing sounds in analog form, developed and patented by Information Storage Devices, capable of storing recorded information after removing the supply voltage for several decades and reproducing recorded information up to 100,000 times. On their basis, the author made and tested prototypes of the proposed device, which allowed to confirm its high security effectiveness as a voice-tonal siren as part of a security and anti-theft system of a car.

Information sources

1. Electronic siren and a method for simulating a multi-frequency tone signal. US 6111774 VA, 7 G08B 3/10, 04/03/2002

2. A device for recording and reproducing words to deter thieves. JP 3165887 B2 09293186 A, 7 G08B 23/00, 05/14/2001

3. P. Yuryev, the journal “Young Technician” No. 9, 1999, p. 74. "How to find the source of our anxiety?"

4. V. Nosov, Radio magazine No. 11, 2001, p. 14. "On the harmful sound."

Claims (1)

A voice-frequency siren with the effect of disturbing pauses, containing in one case the first sound module, low-frequency amplifier and loudspeaker, characterized in that it additionally includes an infrasound signal shaper, a photosensor, an electronic key and a second sound module, combined structurally in the form of a remote control with the recording mode enable button of the first sound module and having remote communication with the first sound module, the first output of which is connected to the control input of the infrasound former signals connected by its output to the input of the low-frequency amplifier and to the second output of the first sound module, connected by its input to the control of the playback mode with the signal output of the anti-theft alarm system of the car, and by the input of the control for changing sound messages in playback mode - with the output of an electronic key, the control input which is connected to the output of the photosensor.