KR100819053B1 - Apparatus and method for detection of vehicles - Google Patents

Apparatus and method for detection of vehicles Download PDF

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Publication number
KR100819053B1
KR100819053B1 KR1020060125110A KR20060125110A KR100819053B1 KR 100819053 B1 KR100819053 B1 KR 100819053B1 KR 1020060125110 A KR1020060125110 A KR 1020060125110A KR 20060125110 A KR20060125110 A KR 20060125110A KR 100819053 B1 KR100819053 B1 KR 100819053B1
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South Korea
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magnetic field
vehicle
unit
change
wireless communication
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KR1020060125110A
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Korean (ko)
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성경복
박종현
장병태
최정단
김도현
김미정
유재준
김정숙
김경태
임재한
신창섭
이인환
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한국전자통신연구원
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/0116—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from roadside infrastructure, e.g. beacons

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Traffic Control Systems (AREA)

Abstract

An apparatus and a method for detecting vehicles are provided to reduce maintenance and installation cost and to measure a traffic volume in many sections by installing the detecting apparatus at roads or parking lots through a compact size. An apparatus for detecting vehicles includes a sensing unit(210), a calculating unit(220), a wireless communication unit(230), and a power supply unit(240). The sensing unit detects the variation of magnetic field. The calculating unit determines whether vehicles exist or not based on the variation of the magnetic field. The wireless communication unit transmits data which represents the existence of the vehicles, to a traffic information collecting unit. The power supply unit supplies an electric power to the calculating unit and the wireless communication unit based on whether or not the variation of magnetic field is varied.

Description

차량 검출 장치 및 방법{Apparatus and method for detection of vehicles}Apparatus and method for detection of vehicles

도1은 본 발명에 따른 차량 검출 장치가 이용되는 차량 검출 시스템의 일 실시예의 구성도이다.1 is a configuration diagram of an embodiment of a vehicle detection system in which a vehicle detection apparatus according to the present invention is used.

도2는 본 발명에 따른 차량 검출 장치의 일 실시예의 기능별 블럭도이다.Figure 2 is a functional block diagram of an embodiment of a vehicle detection apparatus according to the present invention.

도3은 본 발명에 따른 차량 검출 방법의 일 실시예의 흐름도이다.3 is a flowchart of an embodiment of a vehicle detection method according to the present invention.

도4는 본 발명에 따른 차량 검출 방법의 다른 실시예의 흐름도이다.4 is a flowchart of another embodiment of a vehicle detection method according to the present invention.

본 발명은 차량 검출 장치 및 방법에 관한 것으로, 보다 상세하게는 설치가 용이하고 교통 정보 수집 장치로 차량 검출 정보를 무선 전송할 수 있는 차량 검출 장치 및 방법에 관한 것이다.The present invention relates to a vehicle detection apparatus and method, and more particularly, to a vehicle detection apparatus and method that is easy to install and capable of wirelessly transmitting vehicle detection information to a traffic information collection device.

현재 차량 검출 장치로는 루프 감지기가 가장 많이 사용되고 있다. 그러나 루프 감지기는 도로의 표면을 절단한 후 설치하게 되므로 설치비용이 많이 필요하며, 도로 표면 절단에 따른 설치시간도 많이 소요된다. 또한 차량 검출 정보를 유선을 통해서 전송하므로 유선 케이블 비용도 비싸다. 이러한 문제로 인해 주요 구간에만 소수의 루프 감지기를 설치하고 있으며, 결과적으로 일부 구간에서만 교통 정보를 수집할 수 있다. Currently, the loop detector is the most used vehicle detection device. However, since the loop detector is installed after cutting the surface of the road, the installation cost is high, and the installation time due to the cutting of the road surface is also required. In addition, wired cable costs are high because vehicle detection information is transmitted via wire. Due to this problem, only a few loop detectors are installed in major sections, and as a result, traffic information can only be collected in some sections.

다른 장치로 영상 감지기가 사용되는데 이 역시 영상감지기 자체가 고가이며 역시 설치비용이 많이 소요되는 문제점이 있다.As another device, an image sensor is used, which also has a problem in that the image sensor itself is expensive and requires a lot of installation cost.

본 발명이 이루고자 하는 기술적 과제는 설치가 용이하고 차량 검출 정보를 무선으로 전송할 수 있는 차량 검출 장치 및 방법을 제공하는 것이다.SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a vehicle detecting apparatus and method which can be easily installed and can wirelessly transmit vehicle detecting information.

상기의 기술적 과제를 해결하기 위한 본 발명에 따른 차량 검출 장치의 일 실시예로 자기장의 변화를 감지하는 센서부; 및 상기 자기장의 변화를 기초로 차량 유무를 판단하는 연산부;를 포함한다.Sensor unit for detecting a change in the magnetic field in one embodiment of a vehicle detection apparatus according to the present invention for solving the above technical problem; And a calculator configured to determine whether a vehicle is present based on the change of the magnetic field.

상기의 기술적 과제를 해결하기 위한 본 발명에 따른 차량 검출 방법의 일 실시예로 (a) 자기장의 변화를 감지하는 단계; 및 (b) 상기 자기장의 변화를 기초로 차량 유무를 판단하는 단계;를 포함한다.In one embodiment of the vehicle detection method according to the present invention for solving the above technical problem (a) detecting a change in the magnetic field; And (b) determining whether a vehicle is present based on the change of the magnetic field.

이하 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도1은 본 발명에 따른 차량 검출 장치가 이용되는 차량 검출 시스템의 일 실시예의 구성도이다.1 is a configuration diagram of an embodiment of a vehicle detection system in which a vehicle detection apparatus according to the present invention is used.

도1을 참조하면, 차량 검출 시스템은 차량 검출 장치(100), 리피터(120), 및 교통 정보 수집 장치(130)로 구성된다.Referring to FIG. 1, the vehicle detection system includes a vehicle detection apparatus 100, a repeater 120, and a traffic information collecting device 130.

차량 검출 장치(100)에서 차량 유무를 판단하여 상기 차량 유무를 포함한 교 통 정보를 리피터(120)로 전송하면 상기 리피터(120)은 상기 교통 정보를 포함한 신호를 증폭하여 교통 정보 수집 장치(130)으로 전송한다. 차량 검출 장치(100)와 교통 정보 수집 장치(130) 사이의 거리가 먼 경우 사용되는 것으로 거리가 가까운 경우 사용되지 않을 수도 있다.When the vehicle detecting apparatus 100 determines whether the vehicle is present and transmits the traffic information including the vehicle presence to the repeater 120, the repeater 120 amplifies the signal including the traffic information to collect the traffic information 130. To send. It is used when the distance between the vehicle detecting apparatus 100 and the traffic information collecting device 130 is far and may not be used when the distance is close.

교통 정보 수집 장치(130)은 리피터(120)으로부터 상기 교통 정보를 받아 수집한다. 이 정보는 교통량 분석, 충돌 경고 등의 서비스에 사용될 수 있다. The traffic information collecting device 130 receives and collects the traffic information from the repeater 120. This information can be used for services such as traffic analysis and collision warning.

도2는 본 발명에 따른 차량 검출 장치의 일 실시예의 기능별 블럭도이다.Figure 2 is a functional block diagram of an embodiment of a vehicle detection apparatus according to the present invention.

도2를 참조하면, 차량 검출 장치는 센서부(210), 연산부(220), 무선통신부(230) 및 전원부(240)로 구성된다.Referring to FIG. 2, the vehicle detecting apparatus includes a sensor unit 210, a calculator 220, a wireless communication unit 230, and a power supply unit 240.

센서부(210)는 자기장 센서를 이용하야 차량 접근에 따른 자기장의 변화를 측정한다. 본 발명의 자기장 센서 이외에 가속도의 변화를 감지하는 가속도 센서, 진동을 감지하는 진동 센서, 소리를 감지하는 음향 센서 등을 이용할 수도 있을 것이다.The sensor unit 210 measures the change in the magnetic field according to the approach of the vehicle only by using the magnetic field sensor. In addition to the magnetic field sensor of the present invention, an acceleration sensor for detecting a change in acceleration, a vibration sensor for detecting vibration, an acoustic sensor for detecting sound, or the like may be used.

연산부(220)는 상기 센서부(210)으로부터 자기장의 변화를 나타내는 데이터를 수신하여 상기 데이터를 기초로 차량의 유무를 판단한다. 이 때 상기 데이터의 신호를 증폭하기 위한 신호 증폭부 및/또는 상기 센서부(210)으로부터 수신된 아날로그 신호의 상기 데이터를 차량 유무의 연산을 수행하기 위해 디지털 신호로 변환하는아날로그-디지털 변환부를 더 포함할 수 있을 것이다.The calculation unit 220 receives data indicating a change in the magnetic field from the sensor unit 210 and determines whether the vehicle is present based on the data. At this time, the signal amplification unit for amplifying the signal of the data and / or analog-to-digital conversion unit for converting the data of the analog signal received from the sensor unit 210 to a digital signal to perform the operation of the vehicle presence It may include.

무선 통신부(230)는 상기 연산부(220)에서 차량 유무를 검출하면 상기 차량 유무를 포함한 교통 정보를 도1의 교통 정보 수집 장치(130)으로 전송한다. 차량 검출 장치의 설치 편의를 위해 교통 정보를 전송하는 전송부는 무선 전송 장치인 것이 바람직하나, 기타 유선 전송 장치일 수 있다. 또한 실시간 차량 검출을 위해 상기 연산부로부터 상기 교통 정보를 수신한 즉시 교통 정보 수집 장치(130)으로 전송하는 것이 바람직하다.When the wireless communicator 230 detects the presence or absence of a vehicle, the wireless communication unit 230 transmits traffic information including the vehicle presence to the traffic information collecting device 130 of FIG. 1. For the convenience of installation of the vehicle detection device, the transmission unit for transmitting traffic information is preferably a wireless transmission device, but may be another wired transmission device. In addition, it is preferable to transmit the traffic information to the traffic information collecting device 130 immediately after receiving the traffic information from the calculator for real-time vehicle detection.

전원부(240)는 차량 검출 장치의 내부 구성 요소에 전원을 공급한다. 이 때 전력 소모를 줄이기 위해 상기 연산부(220) 및 무선 통신부(230)에 대해서는 상기 센서부(210)로부터 데이터가 전송되는 때에만 전력을 공급하고, 일정 시간 이상 데이터가 수신되지 않으면 상기 공급한 전력을 차단하는 저전력 모드로 동작하는 것이 바람직하다.The power supply unit 240 supplies power to internal components of the vehicle detection apparatus. In this case, in order to reduce power consumption, power is supplied only to the operation unit 220 and the wireless communication unit 230 when data is transmitted from the sensor unit 210, and the data is supplied if data is not received for a predetermined time. It is desirable to operate in a low power mode to shut off.

도3은 본 발명에 따른 차량 검출 방법의 일 실시예의 흐름도이다.3 is a flowchart of an embodiment of a vehicle detection method according to the present invention.

도2 및 도3을 참조하면, 센서부(210)에서 자기장의 변화를 측정하면(310), 연산부(220)에서 상기 자기장의 변화를 기초로 차량 유무를 판단한다(320). 무선통신부(230)는 상기 차량 유무를 포함하는 교통 정보를 교통 정보 수집 장치에 전송한다(330).2 and 3, when the sensor unit 210 measures the change in the magnetic field (310), the calculation unit 220 determines whether the vehicle is based on the change in the magnetic field (320). The wireless communication unit 230 transmits the traffic information including the vehicle presence to the traffic information collecting device (330).

도4는 본 발명에 따른 차량 검출 방법의 다른 실시예의 흐름도이다. 4 is a flowchart of another embodiment of a vehicle detection method according to the present invention.

도2 및 도4를 참조하면, 센서부(210)로부터 일정 시간 이상 자기장의 변화를 나타내는 데이터를 수신하지 않으면(410), 전원부(240)은 연산부(220) 및 무선 통신부(230)에 공급한 전원을 차단한다(420). 상기 전원이 차단된 상태에서 연산부(220)가 센서부(210)로부터 자기장의 변화를 나타내는 데이터를 수신하게 되면(430), 전원부(240)는 연산부(220)에 상기 차단한 전원을 다시 공급하고(440), 상기 전원을 공급받은 연산부는 차량 유무를 검출 한다(450). 이 때 연산부에서 차량이 있는 것으로 판단된 경우 무선 통신부(230)에 전원을 공급하여, 상기 차량 유무를 포함한 교통 정보를 교통 정보 수집 장치에 전달하게 된다(460).2 and 4, when data indicating a change in the magnetic field is not received from the sensor unit 210 for a predetermined time (410), the power supply unit 240 supplies the calculation unit 220 and the wireless communication unit 230. The power is cut off (420). When the operation unit 220 receives data indicating a change in the magnetic field from the sensor unit 210 in the state where the power is cut off (430), the power supply unit 240 supplies the cut off power to the operation unit 220 again. In operation 440, the power supply operation unit detects whether a vehicle is present (450). In this case, when it is determined that there is a vehicle in the operation unit, power is supplied to the wireless communication unit 230 to transmit traffic information including the vehicle presence to the traffic information collecting device (460).

본 발명은 여기에서 설명되는 실시예에 한정되는 것은 아니며 당업계에서 평균의 지식을 가진 자에게 본 발명을 보다 완전히 이해시키기 위하여 제공되는 것으로 본 발명과 동일한 기술적 사상의 여러 형태로 변형 가능할 것이다.The present invention is not limited to the embodiments described herein and is provided to those skilled in the art to more fully understand the present invention and may be modified in various forms of the same technical spirit as the present invention.

자기장 센서를 이용한 차량 검출 장치를 이용할 경우, 소형으로 도로나 주차장에 쉽게 설치할 수 있어 더욱 많은 구간에서 교통량 측정이 가능하며, 교통량 측정을 위한 차량 검출 장치의 설치비용 및 유지비용을 절감할 수 있다. 또한, 저전력 모드로 동작하는 경우 전력 소모를 최소화할 수 있으며, 실시간 차량 검출 정보를 이용하여 교통량 측정 외에도 충돌 경고 등의 위험 경고 서비스에도 사용할 수 있을 것이다. When a vehicle detection device using a magnetic field sensor is used, the vehicle can be easily installed on a road or a parking lot due to its small size, so that traffic volume can be measured in more sections, and the installation cost and maintenance cost of the vehicle detection device for measuring the traffic volume can be reduced. In addition, when operating in the low power mode it is possible to minimize the power consumption, using the real-time vehicle detection information can be used for risk warning services such as collision warning in addition to traffic volume measurement.

Claims (10)

자기장의 변화를 감지하는 센서부; Sensor unit for detecting a change in the magnetic field; 상기 자기장의 변화를 기초로 차량 유무를 판단하는 연산부; A calculating unit determining whether a vehicle is present based on the change of the magnetic field; 상기 차량 유무를 나타내는 데이터를 각 차량 검출시마다 즉시 무선으로 교통 정보 수집기로 전송하는 무선통신부; 및A wireless communication unit for wirelessly transmitting data indicating the presence or absence of the vehicle to a traffic information collector immediately after each vehicle detection; And 상기 자기장의 변화 감지 여부를 기초로 상기 연산부 및 무선통신부로의 전원 공급을 제어하는 전원부;를 포함하는 것을 특징으로 하는 차량 검출 장치.And a power supply unit for controlling the supply of power to the calculation unit and the wireless communication unit based on whether the magnetic field is detected. 삭제delete 삭제delete 삭제delete 제1항에 있어서,The method of claim 1, 상기 전원부는 상기 센서부가 자기장의 변화를 감지한 경우에만 상기 연산부 및 무선통신부로 전원을 공급하는 것을 특징으로 하는 차량 검출 장치.And the power supply unit supplies power to the calculation unit and the wireless communication unit only when the sensor unit detects a change in the magnetic field. (a) 자기장의 변화를 감지하는 단계; (a) detecting a change in the magnetic field; (b) 상기 자기장의 변화를 기초로 차량 유무를 판단하는 단계; 및(b) determining whether a vehicle is present based on the change of the magnetic field; And (c) 상기 차량 유무를 나타내는 데이터를 각 차량 검출시마다 즉시 무선으로 교통 정보 수집기로 전송하는 단계;를 포함하고,(c) transmitting data indicative of the vehicle presence immediately and wirelessly to the traffic information collector for each vehicle detection; 상기 자기장의 변화 여부 감지를 기초로 상기 차량 유무 판단 및 데이터 전송을 위한 전원 공급이 제어되는 것을 특징으로 하는 차량 검출 방법.And determining whether the vehicle is present and supplying power for data transmission based on the detection of the change in the magnetic field. 삭제delete 삭제delete 삭제delete 제6항에 있어서,The method of claim 6, 상기 자기장의 변화가 감지된 경우에만 상기 차량 유무의 판단 및 데이터 전송을 위해 전원을 공급하는 것을 특징으로 하는 차량 검출 방법.Only when the change in the magnetic field is detected, the vehicle detection method characterized in that the power is supplied for the determination of the vehicle presence and data transmission.
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