DE4334890A1 - Alarm detection circuit for a device operated in a motor vehicle - Google Patents
Alarm detection circuit for a device operated in a motor vehicleInfo
- Publication number
- DE4334890A1 DE4334890A1 DE4334890A DE4334890A DE4334890A1 DE 4334890 A1 DE4334890 A1 DE 4334890A1 DE 4334890 A DE4334890 A DE 4334890A DE 4334890 A DE4334890 A DE 4334890A DE 4334890 A1 DE4334890 A1 DE 4334890A1
- Authority
- DE
- Germany
- Prior art keywords
- signal
- sound
- microprocessor
- transducer
- volatile memory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 238000001514 detection method Methods 0.000 title abstract description 3
- 230000005236 sound signal Effects 0.000 claims abstract description 5
- 230000003287 optical effect Effects 0.000 claims abstract description 4
- 230000002238 attenuated effect Effects 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0965—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages responding to signals from another vehicle, e.g. emergency vehicle
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3805—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving with built-in auxiliary receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/01—Input selection or mixing for amplifiers or loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Alarm Systems (AREA)
Abstract
Description
Die Erfindung betrifft ein Tonwiedergabe- oder Telekommunikationsgerät zum Betrieb in einem Kraftfahrzeug nach dem Oberbegriff des Schutzanspruchs 1.The invention relates to a sound or Telecommunication device for operation in one Motor vehicle according to the preamble of protection claim 1.
Tonwiedergabegeräte moderner Bauart zur Verwendung in Kraftfahrzeugen sind mit erheblichen Leistungsreserven versehen, die den Gerätebetreiber bei Ausnutzung der möglichen Lautstärken im Grenzfall daran hindern, einen von einem Hilfs- oder Rettungsfahrzeug ausgesandten Alarmton rechtzeitig zu erkennen. Ebenso vermögen die zur Kommunikation in Kraftfahrzeugen verwendeten Funktelefone einen Fahrer so vom Verkehrsgeschehen abzulenken, daß er das Herannahen eines Einsatzfahrzeuges nicht früh genug registriert.Sound reproduction devices of modern design for use in Motor vehicles have significant performance reserves provided that the device operator when using the possible loudness in the borderline prevent one sent from an auxiliary or rescue vehicle Detect alarm tone in time. They are also able to Communication in mobile phones used in motor vehicles to distract a driver from the traffic that he approaching an emergency vehicle early enough registered.
Es besteht deshalb ein Bedürfnis, den Fahrer eines Kraftfahrzeuges trotz der vorgenannten Unzulänglichkeiten im Bedarfsfall rechtzeitig und sicher zu warnen. There is therefore a need to give the driver one Motor vehicle despite the aforementioned shortcomings to provide timely and safe warnings if necessary.
Aus der deutschen Gebrauchsmusterschrift G 90 15 968 ist ein Autoradio-Cassettenrecorder bekannt, der zum Erkennen bestimmter Frequenzen ein außerhalb der Karosserie angebrachtes Mikrofon besitzt und bei Ertönen von Alarmsignalen das Gerät abschalten soll. Der Nachteil dieser Geräteanordnung besteht darin, daß das Empfangen bestimmter Frequenzen mit Hilfe eines Frequenzempfängers kein sicheres Erkennungsmerkmal für Alarmsignale, z. B. von einem Martinshorn ist, da die Frequenzen nicht eindeutig festgelegt sind und sich zudem durch Dopplereffekte im mobilen Verkehr ändern. Wird jedoch die Frequenz-Fensterbreite zum Erkennen der Alarmtöne vergrößert, so kommt es zu ungewollten Fehlabschaltungen durch die Umweltgeräusche im Verkehr.From the German utility model G 90 15 968 a car radio cassette recorder known to recognize certain frequencies outside the body has attached microphone and when sounds from Alarm signals the device should switch off. The disadvantage this device arrangement is that receiving certain frequencies with the help of a frequency receiver no reliable identifier for alarm signals, e.g. B. from a Martinshorn is because the frequencies are not are clearly defined and also stand out Change Doppler effects in mobile traffic. However, the Frequency window width for recognizing the alarm tones enlarged, this leads to unwanted false shutdowns through the environmental noise in traffic.
Die vorliegende Erfindung beinhaltet deshalb die Aufgabe, eine Warneinrichtung für den Fahrer eines Kraftfahrzeuges zu schaffen, welche die vorstehend genannten Nachteile vermeidet und dabei den Signafluß aus dem Tonwiedergabe- oder Telekommunikationsgerät nicht vollständig unterbricht.The present invention therefore includes the task a warning device for the driver of a motor vehicle to create which the disadvantages mentioned above avoids and thereby the flow of signals from the sound reproduction or telecommunications device is not complete interrupts.
Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Die Patentansprüche 2-3 zeigen vorteilhafte Ausgestaltungen der Erfindung auf. This object is achieved through the features of the patent claim 1 solved. The claims 2-3 show advantageous Embodiments of the invention.
Der Vorteil der in Anspruch 1 offenbarten Schaltungsanordnung liegt darin, daß durch Vergleich der vom Schallwandler 7 empfangenen Signale mit im Speicher 12 abgelegten Signalmustern eine hohe Sicherheit zur Erkennung von Alarmsignalen erreicht wird und daß die laufende Tonübertragung nicht unterbrochen, sondern der Alarm durch ein zusätzliches akustisches und/oder optisches Signal kenntlich gemacht wird.The advantage of the circuit arrangement disclosed in claim 1 is that, by comparing the signals received by the sound transducer 7 with signal patterns stored in the memory 12 , a high level of security for detecting alarm signals is achieved and that the ongoing sound transmission is not interrupted, but rather the alarm is triggered by an additional acoustic signal and / or optical signal is identified.
Nach Anspruch 2 werden in vorteilhafter Weise die für Alarmsignale typischen Erkennungsmerkmale, wie Periodizität, Periodendauer, Wiederkehrhäufigkeit und Frequenzwechsel ausgewertet, um beim Signalvergleich eindeutige Entscheidungskriterien zu finden.According to claim 2 are advantageously for Alarm signals typical detection features, such as Periodicity, period duration, recurrence frequency and Frequency change evaluated in order to compare signals to find clear decision criteria.
Mit den Merkmalen des Anspruchs 3 wird der Vorteil erzielt, daß bei Einspielung eines Warntones die laufende Tonübertragung soweit bedämpft wird, daß zwar die Verständlichkeit erhalten bleibt, die Aufmerksamkeit des Fahrzeugführers jedoch stärker auf das Verkehrsgeschehen konzentriert wird.With the features of claim 3, the advantage achieved that when a warning tone is played the current Sound transmission is damped to the extent that the Clarity is maintained, the attention of the However, the driver is more focused on the traffic situation is concentrated.
Die Erfindung wird nachstehend anhand der Zeichnung erläutert. Die einzige Figur zeigt schematisch das Blockschaltbild eines erfindungsgemäßen Tonwiedergabe- oder Telekommunikationsgerätes. The invention is described below with reference to the drawing explained. The only figure shows this schematically Block diagram of a sound reproduction according to the invention or telecommunication device.
Die Tonwiedergabe- oder Telekommunikationseinrichtung 1 kann beispielsweise einen Rundfunkempfänger, einen Cassetten- oder Compactdisc-Player oder ein Funktelefon enthalten. Über den elektronischen Lautstärkesteller 2 ist sie mit dem Tonverstärker 3 verbunden, der den Lautsprecher 4 speist. Für den Fall, daß die Tonwiedergabe- oder Telekommunikationseinrichtung 1 aus einem Funktelefon besteht, dient der Lautsprecher 4 dem Lauthören beim Freisprechen. Alternativ dazu kann man sich natürlich auch den Hörer des Handapparates eines Funktelefons vorstellen.The sound reproduction or telecommunication device 1 can contain, for example, a radio receiver, a cassette or compact disc player or a radio telephone. It is connected to the sound amplifier 3 , which feeds the loudspeaker 4, via the electronic volume control 2 . In the event that the sound reproduction or telecommunication device 1 consists of a radio telephone, the loudspeaker 4 is used for open listening in hands-free mode. Alternatively, you can of course also imagine the handset of a radio telephone handset.
Der elektronische Lautstärkesteller 2 wird vom Mikroprozessor 10 angesteuert, der seine Funktionsbefehle vom Bedienteil 11 erhält. Ebenso übernimmt der Mikroprozessor 10 die Steuerung sämtlicher Abstimm- oder Laufwerksfunktionen in der Tonwiedergabe- oder Telekommunikationseinrichtung 1 aufgrund der vom Bedienteil 11 stammenden Befehle bzw. des im nichtflüchtigen Speicher 12 abgelegten Betriebsprogramms.The electronic volume control 2 is controlled by the microprocessor 10 , which receives its function commands from the control unit 11 . Likewise, the microprocessor 10 takes over the control of all tuning or drive functions in the sound reproduction or telecommunication device 1 on the basis of the commands originating from the operating part 11 or the operating program stored in the non-volatile memory 12 .
Der Schallwandler 7 ist an der Außenfläche der Fahrzeugkarosserie, z. B. am Lufteinlaß der Fahrzeuglüftung montiert, um die von außen auf das Fahrzeug treffenden Schallwellen zu erfassen. Sein Ausgangssignal wird über den Verstärker 8 dem Analog-/Digital-Wandler 9 zugeführt, der die digitalen Daten an den Mikroprozessor 10 zum Vergleich mit den im Speicher 12 abgelegten Alarmsignalmustern leitet. Der Vergleich erfolgt im wesentlichen hinsichtlich Periodizität, Periodendauer und Wiederkehrhäufigkeit einzelner Frequenzen sowie hinsichtlich periodischer Wechsel zwischen mindestens zwei Frequenzen. Bei Übereinstimmung bestimmter Vergleichskriterien erzeugt der Mikroprozessor 10 ein Warnsignal, das über den Digital-/Analog-Wandler 5 in den Wiedergabekanal mit dem Tonverstärker 3 eingeschleust wird. Der Digital-/Analog-Wandler 5 kann beispielsweise auch dazu dienen, einen Sprachtext als Warnsignal über den Tonverstärker 3 und den Lautsprecher 4 akustisch auszugeben. Sofern nur ein getaktetes Warnsignal dem laufend übertragenen Tonsignal beigemischt werden soll, kann auf den Digital-/Analog-Wandler 5 verzichtet werden.The sound transducer 7 is on the outer surface of the vehicle body, for. B. mounted on the air intake of the vehicle ventilation to detect the sound waves hitting the vehicle from the outside. Its output signal is fed via the amplifier 8 to the analog / digital converter 9 , which forwards the digital data to the microprocessor 10 for comparison with the alarm signal patterns stored in the memory 12 . The comparison is carried out essentially with regard to periodicity, period duration and frequency of return of individual frequencies as well as with regard to periodic changes between at least two frequencies. If certain comparison criteria match, the microprocessor 10 generates a warning signal which is introduced via the digital / analog converter 5 into the playback channel with the sound amplifier 3 . The digital / analog converter 5 can also be used, for example, to acoustically output a speech text as a warning signal via the sound amplifier 3 and the loudspeaker 4 . If only a clocked warning signal is to be added to the continuously transmitted audio signal, the digital / analog converter 5 can be dispensed with.
Gleichzeitig mit der Ausgabe eines Warnsignals zur akustischen Ausgabe über den Tonkanal kann der Mikroprozessor 10 eine optische Anzeigeeinrichtung 6 ansteuern, die beispielsweise mit Hilfe eines Blinklichtes auf einen aktuellen Alarm aufmerksam macht.Simultaneously with the output of a warning signal for acoustic output via the sound channel, the microprocessor 10 can control an optical display device 6 which, for example, uses a flashing light to draw attention to a current alarm.
In einer weiteren Variante der Erfindung erhöht der Mikroprozessor 10 beim Erkennen eines fahrzeugexternen Alarmsignals die Dämpfung des Tonsignals im Tonwiedergabekanal, indem er den elektronischen Lautstärkesteller 2 vorübergehend um einen vorgegebenen Wert verstellt. Dadurch wird das Lautstärkenverhältnis zwischen dem über den Digital-/Analog-Wandler 5 in den Tonkanal eingespeisten Warnsignal und dem von der Tonwiedergabe- oder Telekommunikationseinrichtung 1 gelieferten Tonsignal in der Weise verändert, daß das Warnsignal auf keinen Fall überhört werden kann. Es ist auch möglich, die Dämpfung des Lautstärkestellers nur dann zu erhöhen, wenn in der Ausgangsstellung die Lautstärke ein zulässiges Mindestmaß überschreitet.In a further variant of the invention, the microprocessor 10 increases the attenuation of the sound signal in the sound reproduction channel when a alarm signal external to the vehicle is detected by temporarily adjusting the electronic volume control 2 by a predetermined value. As a result, the volume ratio between the warning signal fed into the sound channel via the digital / analog converter 5 and the sound signal supplied by the sound reproduction or telecommunication device 1 is changed in such a way that the warning signal can in no case be ignored. It is also possible to increase the attenuation of the volume control only if the volume in the initial position exceeds a permissible minimum.
Claims (3)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4334890A DE4334890A1 (en) | 1993-10-13 | 1993-10-13 | Alarm detection circuit for a device operated in a motor vehicle |
DE9320968U DE9320968U1 (en) | 1993-10-13 | 1993-10-13 | Alarm detection circuit for a device operated in a motor vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4334890A DE4334890A1 (en) | 1993-10-13 | 1993-10-13 | Alarm detection circuit for a device operated in a motor vehicle |
Publications (1)
Publication Number | Publication Date |
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DE4334890A1 true DE4334890A1 (en) | 1995-04-20 |
Family
ID=6500051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4334890A Ceased DE4334890A1 (en) | 1993-10-13 | 1993-10-13 | Alarm detection circuit for a device operated in a motor vehicle |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4334890A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19749372A1 (en) * | 1997-11-07 | 1999-05-12 | Volkswagen Ag | Electronic recognition system for acoustic signals |
EP1684419A1 (en) * | 2005-01-13 | 2006-07-26 | Delphi Technologies, Inc. | In-vehicle entertainment system |
EP1744450A1 (en) * | 2005-07-14 | 2007-01-17 | Harman Becker Automotive Systems GmbH | Electronic device |
WO2007007916A1 (en) * | 2005-07-14 | 2007-01-18 | Matsushita Electric Industrial Co., Ltd. | Transmitting apparatus and method capable of generating a warning depending on sound types |
WO2007067555A1 (en) * | 2005-12-06 | 2007-06-14 | At&T Intellectual Property, Inc. | Audio/video reproducing systems, methods and computer program products that modify audio/video electrical signals in response to specific sounds/images |
DE102007028400B3 (en) * | 2007-06-15 | 2009-01-29 | Navigon Ag | Method for signalizing approach of right of vehicle to vehicle driver, involves issuing characteristics reference with warning reference, that is assigned indirectly or directly to warning reference or reference sample |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9015968U1 (en) * | 1990-11-23 | 1991-02-21 | Twardawski, Sebastian, 7840 Müllheim | A car radio cassette recorder with a device for switching off when recording certain frequencies |
-
1993
- 1993-10-13 DE DE4334890A patent/DE4334890A1/en not_active Ceased
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9015968U1 (en) * | 1990-11-23 | 1991-02-21 | Twardawski, Sebastian, 7840 Müllheim | A car radio cassette recorder with a device for switching off when recording certain frequencies |
Non-Patent Citations (1)
Title |
---|
Adrian Zoicas: Chipsatz erkennt gesprochene Wörter, In: Elektronik 23, 1984, S. 166-170 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19749372A1 (en) * | 1997-11-07 | 1999-05-12 | Volkswagen Ag | Electronic recognition system for acoustic signals |
EP1684419A1 (en) * | 2005-01-13 | 2006-07-26 | Delphi Technologies, Inc. | In-vehicle entertainment system |
EP1744450A1 (en) * | 2005-07-14 | 2007-01-17 | Harman Becker Automotive Systems GmbH | Electronic device |
WO2007007916A1 (en) * | 2005-07-14 | 2007-01-18 | Matsushita Electric Industrial Co., Ltd. | Transmitting apparatus and method capable of generating a warning depending on sound types |
WO2007067555A1 (en) * | 2005-12-06 | 2007-06-14 | At&T Intellectual Property, Inc. | Audio/video reproducing systems, methods and computer program products that modify audio/video electrical signals in response to specific sounds/images |
DE102007028400B3 (en) * | 2007-06-15 | 2009-01-29 | Navigon Ag | Method for signalizing approach of right of vehicle to vehicle driver, involves issuing characteristics reference with warning reference, that is assigned indirectly or directly to warning reference or reference sample |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |