JPH07182594A - Traffic information measuring instrument - Google Patents
Traffic information measuring instrumentInfo
- Publication number
- JPH07182594A JPH07182594A JP32373193A JP32373193A JPH07182594A JP H07182594 A JPH07182594 A JP H07182594A JP 32373193 A JP32373193 A JP 32373193A JP 32373193 A JP32373193 A JP 32373193A JP H07182594 A JPH07182594 A JP H07182594A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- sound
- traffic information
- output
- traffic
- 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.)
- Pending
Links
Landscapes
- Traffic Control Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、道路上を走行する自
動車（車両）の種類（車種），走行速度（車速），交通
量（単位時間当たりの走行台数）などの交通情報を測定
する測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a measurement for measuring traffic information such as a type (vehicle type) of an automobile (vehicle) traveling on a road, a traveling speed (vehicle speed), and a traffic volume (the number of vehicles traveling per unit time). Regarding the device.
【０００２】[0002]
【従来の技術】従来、この種の方式として、 （１）超音波方式…車両から反射してくる超音波によっ
て車種，車速を検出するもの。 （２）光電管方式…一列に並べられた光電管における光
の遮断状態から車種，車速を検出するもの。 （３）ループコイル方式…道路に埋設されたループコイ
ルにより通行車両の有無を検出し、交通量を計測するも
の。 などが知られている。2. Description of the Related Art Conventionally, as this type of system, (1) ultrasonic system ... A system that detects a vehicle type and vehicle speed by ultrasonic waves reflected from the vehicle. (2) Phototube method: A method of detecting the vehicle type and vehicle speed from the light blocking state of the phototubes arranged in a line. (3) Loop coil method: A method in which the presence or absence of a passing vehicle is detected by a loop coil buried in the road to measure the traffic volume. Are known.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記
（１）の方式には超音波発信器、また（２）の方式には
多数の光電管をそれぞれ取りつけなければならず、設備
規模が大きくなるという問題がある。一方、（３）の方
式ではループコイルを路面下に埋設するため、道路強度
の観点から高架道路への設置が困難である、また、既設
道路への適用には大掛かりな工事を必要とする、などの
問題がある。したがって、この発明の課題は既設道路へ
の適用および保守が容易で、しかも非接触型とすること
にある。However, in the method of (1) above, an ultrasonic transmitter must be installed, and in the method of (2), a large number of photoelectric tubes must be installed respectively, resulting in a large facility scale. There is. On the other hand, in the method of (3), since the loop coil is buried under the road surface, it is difficult to install it on the elevated road from the viewpoint of road strength. Further, application to the existing road requires large-scale construction. There are problems such as. Therefore, an object of the present invention is to make it easy to apply and maintain on an existing road and to make it non-contact type.
【０００４】[0004]
【課題を解決するための手段】このような課題を解決す
るため、この発明では、車両の走行路の近傍に設置され
る音響センサと、この音響センサを介して検出される車
両走行音を周波数分析する周波数分析手段と、その出力
から特徴音を抽出して音声認識を行なう音声認識手段と
を備え、車両の種類，走行速度または交通量の少なくと
も１つを測定可能にしたことを特徴としている。この発
明においては、前記音響センサを２つ、走行路の側方に
互いに近接して配置すること、または、前記音響センサ
を２つ、走行路の上方に互いに近接して配置することが
できる。In order to solve such a problem, according to the present invention, an acoustic sensor installed in the vicinity of a traveling path of a vehicle and a vehicle traveling sound detected through the acoustic sensor are frequency-converted. A frequency analyzing means for analyzing and a voice recognizing means for performing voice recognition by extracting a characteristic sound from the output thereof are provided, and at least one of a vehicle type, a traveling speed and a traffic volume can be measured. . In the present invention, two of the acoustic sensors may be arranged laterally close to each other on the road, or two of the acoustic sensors may be arranged above the road close to each other.
【０００５】[0005]
【作用】車両の走行時に発せられる走行音（エンジン
音，タイヤ音，吸排気系統音など）を音響センサにより
検出し、周波数分析して音声認識することにより、設備
規模を特に大きくすることなく、しかも非接触式で交通
関係情報を測定し得るようにする。[Function] The running sound (engine sound, tire sound, intake / exhaust system sound, etc.) emitted when the vehicle is running is detected by an acoustic sensor, and frequency analysis is performed to recognize the sound, without increasing the facility scale. Moreover, it should be possible to measure traffic related information in a non-contact manner.
【０００６】[0006]
【実施例】図１はこの発明の第１実施例を示す構成図で
ある。同図において、１は車両、２はマイクロホン、３
はプリアンプ、４は騒音計、５はＦＦＴ（Ｆａｓｔ Ｆ
ｏｕｒｉｅｒ Ｔｒａｎｓｆｏｒｍ）アナライザ、６は
ニューラルネットワークなどの音声認識装置、７はデー
タ処理装置である。なお、マイクロホン２、プリアンプ
３および騒音計４などによって音響センサが構成され
る。1 is a block diagram showing a first embodiment of the present invention. In the figure, 1 is a vehicle, 2 is a microphone, 3
Is a preamplifier, 4 is a sound level meter, 5 is an FFT (Fast F
4 is a voice recognition device such as a neural network, and 7 is a data processing device. Note that the microphone 2, the preamplifier 3, the sound level meter 4, and the like constitute an acoustic sensor.
【０００７】このような構成において、マイクロホン２
は車両１が走行する道路脇に設置され、車両の走行時に
発せられる走行音、例えばエンジン音，タイヤ音，吸排
気系統音などを検出する。なお、マイクロホン２として
は防塵・防滴・防風対策を施しておくこと、さらには車
両を１台ずつ検出し得るように指向性を持たせておくこ
となどが望ましい。騒音計４は、マイクロホン２および
プリアンプ３を介する走行音を増幅するために設けら
れ、したがって騒音計４は単なるメインアンプで置き換
えることができる。In such a structure, the microphone 2
Is installed beside a road on which the vehicle 1 travels, and detects traveling sounds generated during traveling of the vehicle, such as engine sound, tire sound, intake and exhaust system sound. It is desirable that the microphone 2 be dustproof, dripproof, and windproof, and have directivity so that the vehicles can be detected one by one. The sound level meter 4 is provided to amplify the traveling sound through the microphone 2 and the preamplifier 3, and therefore the sound level meter 4 can be replaced by a simple main amplifier.
【０００８】騒音計４の出力はＦＦＴアナライザ５に導
かれ、ここでオクターブバンドレベルの抽出を含む周波
数分析が行なわれる。この出力はさらにニューラルネッ
トワークを含む音声認識装置６に与えられ、ここで音声
認識が行なわれる。処理装置７はその結果から車種，車
速または交通量（台数のカウント）などを測定する。な
お、ＦＦＴアナライザや音声認識装置は、ハードウエア
だけでなくソフトウエアで実現することも可能である。The output of the sound level meter 4 is guided to the FFT analyzer 5, where frequency analysis including extraction of the octave band level is performed. This output is further given to a voice recognition device 6 including a neural network, where voice recognition is performed. The processing device 7 measures the vehicle type, the vehicle speed, the traffic volume (count of the number of vehicles), etc. from the result. The FFT analyzer and the voice recognition device can be realized not only by hardware but also by software.
【０００９】図２はこの発明の変形例を示す構成図であ
る。これは、同図からも明らかなようにマイクロホン２
１、プリアンプ３１、騒音計４１およびＦＦＴアナライ
ザ５１を付加して２系統とした点が特徴で、その他は図
１と同様である。つまり、図１では車速をドップラー効
果を利用して測定することを想定しているが、マイクロ
ホン２プリアンプ３および騒音計４からなる音響センサ
部も、１系統だけではその測定が困難になることが予想
されるので、ここでは２系統としてより効果的に車速を
測定し得るようにしたものである。FIG. 2 is a block diagram showing a modification of the present invention. This is the microphone 2 as can be seen from the figure.
1 is different from that of FIG. 1 in that a preamplifier 31, a sound level meter 41, and an FFT analyzer 51 are added to form two systems. That is, although it is assumed in FIG. 1 that the vehicle speed is measured by utilizing the Doppler effect, it may be difficult to measure the acoustic sensor portion including the microphone 2 preamplifier 3 and the sound level meter 4 with only one system. Since it is expected, the vehicle speed can be measured more effectively by using two systems here.
【００１０】図１，図２ではマイクロホン２，２１を走
行路の側方に配置したが、図３のように構成することも
できる。すなわち、これはマイクロホンを走行路の側方
に配置せずに、走行路の上方に配置した例である。ここ
では、各車線に１個ずつ設けているが、図２と同じよう
に各車線に２つずつ設けることができるのはいうまでも
ない。Although the microphones 2 and 21 are arranged on the side of the traveling path in FIGS. 1 and 2, the microphones and 21 may be configured as shown in FIG. That is, this is an example in which the microphone is not arranged on the side of the traveling road but is arranged above the traveling road. Here, one lane is provided for each lane, but it is needless to say that two lanes can be provided for each lane as in FIG.
【００１１】[0011]
【発明の効果】この発明によれば、音響センサからの出
力を音声認識して交通情報を測定するようにしたので、
設備規模を小さくすることができるだけでなく、構造が
簡単なので既設道路や高架道路への設置も容易であり、
建設コストやランニングコストを低く抑えることが可能
となる利点が得られる。According to the present invention, the output from the acoustic sensor is voice-recognized to measure the traffic information.
Not only can the equipment scale be reduced, but its simple structure makes it easy to install on existing roads and elevated roads.
The advantage is that the construction cost and running cost can be kept low.
【００１２】したがって、この発明は、 （１）駐車場施設での交通量，車種判別システム （２）料金所出入口での交通量計測システム （３）道路利用状況（交通量）調査 （４）トンネル換気負荷計測システム などに使用して好適である。Therefore, the present invention provides (1) a traffic volume and vehicle type discrimination system in a parking facility (2) a traffic volume measurement system at a toll gate entrance / exit (3) road usage situation (traffic volume) survey (4) tunnel It is suitable for use in ventilation load measurement systems.
【図１】この発明の実施例を示す構成図である。FIG. 1 is a configuration diagram showing an embodiment of the present invention.
【図２】この発明の変形例を示す構成図である。FIG. 2 is a configuration diagram showing a modified example of the present invention.
【図３】この発明の他の変形例を示す構成図である。FIG. 3 is a configuration diagram showing another modification of the present invention.
１…車両（自動車）、２，２１…マイクロホン、３，３
１…プリアンプ、４，４１…騒音計、５，５１…ＦＦＴ
アナライザ、６…音声認識装置（ニューラルネットワー
ク）、７…データ処理装置。1 ... Vehicle (automobile), 2, 21 ... Microphone, 3, 3
1 ... Preamplifier, 4, 41 ... Sound level meter, 5, 51 ... FFT
Analyzer, 6 ... Voice recognition device (neural network), 7 ... Data processing device.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐々木 貴仁 神奈川県川崎市川崎区田辺新田１番１号 富士電機株式会社内 (72)発明者 望月 謙治 東京都日野市富士町１番地 富士ファコム 制御株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takahito Sasaki, Takanari Sasaki 1-1, Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd. (72) Kenji Mochizuki, Fujimachi, Hino-shi, Tokyo Fujifacom Control Within the corporation
Claims (3)
ンサと、この音響センサを介して検出される車両走行音
を周波数分析する周波数分析手段と、その出力から特徴
音を抽出して音声認識を行なう音声認識手段とを備え、
車両の種類，走行速度または交通量の少なくとも１つを
測定可能にしてなることを特徴とする交通情報測定装
置。1. An acoustic sensor installed in the vicinity of a traveling path of a vehicle, a frequency analysis means for frequency-analyzing a vehicle traveling sound detected through the acoustic sensor, and a characteristic sound extracted from its output to produce a voice. Equipped with a voice recognition means for recognition,
A traffic information measuring device, which is capable of measuring at least one of a vehicle type, a traveling speed, and a traffic volume.
互いに近接して配置することを特徴とする請求項１に記
載の交通情報測定装置。2. The traffic information measuring device according to claim 1, wherein the two acoustic sensors are arranged adjacent to each other on a side of a traveling road.
互いに近接して配置することを特徴とする請求項１に記
載の交通情報測定装置。3. The traffic information measuring device according to claim 1, wherein the two acoustic sensors are arranged close to each other above a traveling road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32373193A JPH07182594A (en) | 1993-12-22 | 1993-12-22 | Traffic information measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32373193A JPH07182594A (en) | 1993-12-22 | 1993-12-22 | Traffic information measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07182594A true JPH07182594A (en) | 1995-07-21 |
Family
ID=18157988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32373193A Pending JPH07182594A (en) | 1993-12-22 | 1993-12-22 | Traffic information measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07182594A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003016596A (en) * | 2001-06-27 | 2003-01-17 | Sumitomo Electric Ind Ltd | System for preventing collision and device for generating display information |
| WO2012095939A1 (en) * | 2011-01-12 | 2012-07-19 | パナソニック株式会社 | Vehicle quantity identification device and vehicle quantity identification method |
| WO2015162309A1 (en) * | 2014-04-23 | 2015-10-29 | Centro Tecnologico Acustico, S.L. | Equipment for measuring environmental noise |
-
1993
- 1993-12-22 JP JP32373193A patent/JPH07182594A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003016596A (en) * | 2001-06-27 | 2003-01-17 | Sumitomo Electric Ind Ltd | System for preventing collision and device for generating display information |
| WO2012095939A1 (en) * | 2011-01-12 | 2012-07-19 | パナソニック株式会社 | Vehicle quantity identification device and vehicle quantity identification method |
| JP5048887B2 (en) * | 2011-01-12 | 2012-10-17 | パナソニック株式会社 | Vehicle number identification device and vehicle number identification method |
| US9205787B2 (en) | 2011-01-12 | 2015-12-08 | Panasonic Intellectual Property Management Co., Ltd. | Vehicle counting device and vehicle counting method |
| WO2015162309A1 (en) * | 2014-04-23 | 2015-10-29 | Centro Tecnologico Acustico, S.L. | Equipment for measuring environmental noise |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9911336B2 (en) | Method for identification of vehicles for operating a car park or a parking area | |
| US11276302B2 (en) | Traffic monitoring apparatus and method of using the same | |
| US8266952B2 (en) | System and method for quantifying the presence of components in the exhaust of commercial and/or heavy-duty vehicles | |
| US9733346B1 (en) | Method for providing sound detection information, apparatus detecting sound around vehicle, and vehicle including the same | |
| Ishida et al. | SAVeD: Acoustic vehicle detector with speed estimation capable of sequential vehicle detection | |
| Chen et al. | Road vehicle detection and classification using magnetic field measurement | |
| Ishida et al. | Design of acoustic vehicle count system using DTW | |
| Ishida et al. | Design of simple vehicle counter using sidewalk microphones | |
| US20230125456A1 (en) | Dynamic road traffic noise mapping using distributed fiber optic sensing (dfos) over telecom network | |
| Choudhury et al. | Review of emergency vehicle detection techniques by acoustic signals | |
| JPH07182594A (en) | Traffic information measuring instrument | |
| Dawton et al. | Initial evaluation of vehicle type identification using roadside stereo microphones | |
| KR100378956B1 (en) | Acoustical Vehicle Detection System | |
| CN1293350A (en) | Method for analyzing surficial acoustic field of high-speed moving object | |
| CN112230208B (en) | Automobile running speed detection method based on smart phone audio perception | |
| Uchino et al. | Initial design of two-stage acoustic vehicle detection system for high traffic roads | |
| JP7424394B2 (en) | Vehicle monitoring system, vehicle monitoring method, and vehicle monitoring device | |
| JP3132705B2 (en) | Traffic information measurement device | |
| CN104508450A (en) | System and method for quantifying the presence of components in the exhaust of commercial and/or heavy-duty vehicles | |
| Severdaks et al. | Vehicle counting and motion direction detection using microphone array | |
| Czyżewski et al. | Comparative study on the effectiveness of various types of road traffic intensity detectors | |
| JP3015876B2 (en) | Traveling vehicle grasping device using pulse laser | |
| JP3039151B2 (en) | Traffic flow detector | |
| Marciniuk et al. | Acoustic Road Monitoring | |
| Liu et al. | A novel cost-effective IoT-based traffic flow detection scheme for smart roads |