RU2012126185A - DEVICE FOR DETECTING MOVING LAND VEHICLES BY ACOUSTIC SIGNALS - Google Patents
DEVICE FOR DETECTING MOVING LAND VEHICLES BY ACOUSTIC SIGNALS Download PDFInfo
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- RU2012126185A RU2012126185A RU2012126185/11A RU2012126185A RU2012126185A RU 2012126185 A RU2012126185 A RU 2012126185A RU 2012126185/11 A RU2012126185/11 A RU 2012126185/11A RU 2012126185 A RU2012126185 A RU 2012126185A RU 2012126185 A RU2012126185 A RU 2012126185A
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Abstract
Устройство обнаружения движущихся наземных транспортных средств по акустическим сигналам, содержащее предварительный усилитель, подключенный к выходу микрофона, аналого-цифровой преобразователь, формирователь временного окна, блок спектрального представления сигнала, отличающееся тем, что в устройство дополнительно введены фильтр верхних частот, блок оценки изменения уровня сигнала внутри временного окна, блок нахождения максимумов, блок частотной коррекции, блок вычисления второго порога, первое пороговое устройство, второе пороговое устройство и схема «И», причем первый выход фильтра верхних частот подключен ко входу блока спектрального представления сигнала, выход которого соединен со входом блока нахождения максимумов, выход которого подключен ко входу блока частотной коррекции, первый выход которого подключен ко входу первого порогового устройства и к первому входу второго порогового устройства, второй выход блока частотной коррекции соединен с первым входом блока вычисления второго порога, второй вход которого соединен с выходом блока оценки изменения уровня сигнала внутри временного окна, вход которого соединен со вторым выходом фильтра верхних частот, выход блока вычисления второго порога подключен ко второму входу второго порогового устройства, выходы пороговых устройств подключены ко входам схемы «И».A device for detecting moving land vehicles by acoustic signals, comprising a pre-amplifier connected to the microphone output, an analog-to-digital converter, a time window driver, a signal spectral representation unit, characterized in that a high-pass filter and an signal level change estimation unit are additionally introduced into the device inside the time window, the unit for finding the maxima, the unit for frequency correction, the unit for calculating the second threshold, the first threshold device, the second threshold a device and an “I” circuit, the first output of the high-pass filter connected to the input of the spectral representation of the signal, the output of which is connected to the input of the maximum detection unit, the output of which is connected to the input of the frequency correction unit, the first output of which is connected to the input of the first threshold device and to the first input of the second threshold device, the second output of the frequency correction block is connected to the first input of the second threshold calculation unit, the second input of which is connected to the output of the change estimation unit match signal within a time window input coupled to the second output of the high pass filter, the second threshold calculation unit output is connected to the second input of the second threshold device, the outputs of threshold devices are connected to the inputs of circuit "I".
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RU2012126185/11A RU2509372C1 (en) | 2012-06-22 | 2012-06-22 | Device for detecting moving ground vehicles from acoustic signals |
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RU2012126185/11A RU2509372C1 (en) | 2012-06-22 | 2012-06-22 | Device for detecting moving ground vehicles from acoustic signals |
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RU2012126185A true RU2012126185A (en) | 2013-12-27 |
RU2509372C1 RU2509372C1 (en) | 2014-03-10 |
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RU2012126185/11A RU2509372C1 (en) | 2012-06-22 | 2012-06-22 | Device for detecting moving ground vehicles from acoustic signals |
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Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US6195608B1 (en) * | 1993-05-28 | 2001-02-27 | Lucent Technologies Inc. | Acoustic highway monitor |
US7071841B2 (en) * | 2004-08-19 | 2006-07-04 | Ut-Battelle, Llc | Truck acoustic data analyzer system |
US8111174B2 (en) * | 2007-10-03 | 2012-02-07 | University Of Southern California | Acoustic signature recognition of running vehicles using spectro-temporal dynamic neural network |
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RU2509372C1 (en) | 2014-03-10 |
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Effective date: 20140623 |