KR101086088B1 - Vehicle Traveling Related Data Acquirement System Available Multi-Point Measurement - Google Patents

Abstract

The present invention discloses a vehicle driving-related data acquisition system capable of multi-point measurement using a plurality of laser irradiation points in one system.

According to the present invention, the vehicle width can be detected by a single laser device, so that data for identifying a vehicle type can be obtained, and various data related to a vehicle passing through a wide road or a plurality of lanes can be simultaneously acquired. This enables multi-point measurement.

To this end, the present invention is capable of firing lasers at a plurality of points and receiving a plurality of lasers by means of a plurality of laser diodes and APDs installed in one transmitting lens and one receiving lens, thereby detecting a height profile of the vehicle. At the same time, it is possible to accurately determine the type of vehicle by detecting the width of the vehicle, and to obtain data related to a wide road or a vehicle traveling through a plurality of lanes with a single device, thereby greatly increasing the installation cost of the equipment. There is a useful effect that it can reduce and reduce the cost of maintenance.

Laser vehicle vehicle width vehicle driving

Description

Vehicle Traveling Related Data Acquirement System Available Multi-Point Measurement}

The present invention relates to a vehicle driving data acquisition system capable of multi-point measurement, and more particularly to a vehicle driving data acquisition system capable of multi-point measurement to measure the passing state of two or more points of the vehicle with a single device. .

Conventionally, a driving vehicle-related data acquisition system (Korean Patent No. 0877175; hereinafter referred to as 'Citation Invention 1') has been proposed to obtain data related to a driving vehicle by using a laser. As shown, a transmitting unit comprising a transmitting lens and a transmitting laser diode, a pulse generating unit for applying a pulse output for driving the same, a receiving unit including an APD and a filter installed inside the receiving lens and the receiving lens, Channel 1 comprising a pulse receiver for amplifying the pulse signal of the receiver and a distance measuring unit configured to measure the distance by the output of the above-described pulse generator and the output of the pulse receiver, channel 2 having the same configuration as channel 1, and channel 1 A microprocessor configured to define the vehicle model against the output signal of 2 and a pre-stored profile waveform To the conversion unit, and provided with a vehicle speed detected by the data output profile conversion unit, memory for storing vehicle data, such as vehicles, hayeoseo having an output port that can output these data in real time.

This cited invention 1 compares the distance variation profile of a vehicle that emits two laser beams in two channels, each received in two channels, and passes through two laser beams, according to the detected parallax of the vehicle. By calculating the speed by, it is possible to obtain data such as the car model, traffic volume.

Accordingly, the present invention 1 does not require a roof installation work such as a conventional fixed unmanned speed meter, so the construction can be made very easily and quickly, regardless of the weather, state, or night time, as well as the speed of the vehicle Identification data, etc. can be provided, and the data can be collected based on the time zone, and the traffic volume of the corresponding road, the model traffic volume by time zone, and the vehicle driving speed by time zone can be calculated to obtain data related to the traffic situation and traffic policy establishment. It is widely used.

On the other hand, the present invention as shown in FIG. 1 is composed of two channels having one APD in one receiving lens and one transmitting laser diode in one transmitting lens. Of course, only the data of vehicles passing through two points of limited width can be secured. Therefore, if the lane width of the road through which the vehicle passes is wide or there are multiple lanes, It is necessary to install expensive laser measuring equipment having an installation or a scanning function, so the installation cost becomes excessive and there is a problem in that maintenance and repair occur.

In fact, in order to obtain vehicle-related data that passes through a wide range of lanes, an electronic toll collection system is provided by closely installing a large number of transmission and reception lenses and a plurality of transmission and reception lenses installed in a 1: 1 correspondence to APDs. Korean Patent No. 505047; hereafter referred to as 'quotation citation 2'), which identifies the vehicle type by a plurality of laser distance sensors, as shown in Figure 3, and firing the laser over the full width of the gantry Since it is necessary to closely install a plurality of distance sensing means for receiving, there is a problem that the manufacturing cost is enormous, and there is a problem that the maintenance cost also increases accordingly.

An object of the present invention is to use a single transmission lens and a receiving lens to solve the problems of the inventions 1 and 2 so as to emit a plurality of laser light to a plurality of target points and receive them by a plurality of APD, respectively. Therefore, it is possible to detect the vehicle width by a single laser device so that data for identifying the vehicle type can be obtained, and various data related to vehicles passing through a wide road or multiple lanes can be obtained. To provide a vehicle driving data acquisition system capable of multi-point measurement.

In order to achieve the above object, the present invention provides a transmitter including a driver for generating a pulse for driving a laser diode installed inside the transmitter lens, and a receiver, a transmitter, and a receiver connected to an APD installed inside the receiver lens. In addition, a well-known laser type vehicle driving data acquisition system having a microprocessor for data processing such as speed calculation and profile extraction, a memory for storing various data, and an input / output interface for inputting and outputting various data. In

A plurality of laser diodes are provided inside the above-described transmission lens, and the outputs of the driving unit are connected to the plurality of laser diodes, and the input of the driving unit connects the output side of the first multiplexer, and the input side and the control terminal of the first multiplexer are micro. To the processor,

A plurality of APDs are provided inside the above-described receiving lens, and the plurality of APDs are connected to the input side of the amplifier, the output side of the amplifier is connected to the input side of the second multiplexer, and the input side and the control terminal of the above-mentioned second multiplexer are micro Connected to the processor to connect to the receiver,

The plurality of laser diodes inside the transmitting lens are spaced apart and fixed in an array that generates the distance between the laser irradiation target points, and the plurality of APDs inside the receiving lens are the same as the array of the laser diodes described above. We propose a data acquisition system for vehicle driving with fixed multi-point measurement.

In this way, the present invention is capable of firing lasers at a plurality of points and receiving a plurality of lasers by means of a plurality of laser diodes and APDs installed inside one transmitting lens and one receiving lens, thereby detecting a height profile of the vehicle. At the same time, it is possible to accurately determine the type of vehicle by detecting the width of the vehicle, and to obtain data related to a wide road or a vehicle traveling through a plurality of lanes with a single device, thereby greatly increasing the installation cost of the equipment. There is a useful effect that it can reduce and reduce the cost of maintenance.

When the present invention as described above will be described in detail with reference to the accompanying drawings.

4 is a block diagram of a vehicle driving-related data acquisition system capable of multi-point measurement according to the present invention. As can be seen from this, the present invention provides a transmitting unit 103 having a driving unit 102 for driving the laser diode 101 installed inside the transmitting lens 100,

A receiver 203 having an amplifier 202 connected to the APD 201 installed inside the receiver lens 200;

A microprocessor 300 for supplying a control output signal to the driver 102 of the transmitter 103, receiving a signal from the amplifier 202 of the receiver 203, and processing data such as speed calculation and profile extraction; In the well-known laser type vehicle driving data acquisition system having a memory 400 for storing various data, and an input / output interface 500 for inputting and outputting various data,

A plurality of laser diodes 101 and a plurality of driving units 102 for supplying operating power to the laser diodes 101 are provided inside the one transmitting lens 100, but the plurality of laser diodes 101 are provided. ) Is fixed to be spaced apart corresponding to the interval of the plurality of target points.

In addition, in the present invention, a plurality of APDs 201 and a plurality of amplifying units 202 are provided inside the one reception lens 200 described above, and the reception lens 200 includes the transmission lens 100. It is also advantageous to compact the whole equipment as far as possible.

In addition, the plurality of APDs 201 installed at positions where lasers reflected and incident at various points on the road surface are collected and reached through the receiving lens 200 are spaced at the same interval as the laser diode 101 of the transmitter 103 described above. To place.

In addition, the plurality of laser diodes 101 described above are connected to the output side of the driving unit, the driving unit is connected to the output of the first multiplexer 600, and the input side and the control terminal of the first multiplexer 600 are microprocessors ( 300).

In addition, the plurality of APDs 201 installed inside the reception lens 200 are connected to the input side of the amplifier 202, and the output side of the amplifier 202 is connected to the input side of the second multiplexer 601. The output side and the control terminal of the second multiplexer 601 are connected to the microprocessor 300.

Referring to the operation of the present invention as described above is as follows.

First, the present invention selects a plurality of points on the lane road surface, and sets a focal length of the transmission lens 100 and an interval between the laser diodes 101.

Subsequently, the laser diode 101 is disposed at the focal length point of the transmission lens 100 and the distance between the laser diode 101 is based on the distance between the transmission lens 100 and the road surface point and the distance between the road surface point in the following manner. To calculate the laser diode 101 is arranged.

)가 20m이고, 송신 렌즈(100)의 초점거리(

)가 80mm라고 가정하며, 노면의 포인트 사이의 간격(

)이 1m라고 가정하면 레이저 다이오드(101) 어레이의 간격(

)은 다음 식으로 산출될 수 있다.That is, for example, as shown in FIG. 5A, the linear distance between the transmission lens 100 and the point on the road surface (

) Is 20m, and the focal length of the transmission lens 100

) Is 80 mm, and the spacing between points on the road surface (

Assuming that 1 m is 1 m, the spacing (

) Can be calculated by the following equation.

=4mm가 된다.therefore,

= 4 mm.

Therefore, the spacing of the laser diodes 101 is 4 mm, and the spaced apart laser diodes 101 have an angle between each laser diode 101 passing through the inner center of the transmission lens 100 and a straight line connecting the target points. (θ) becomes equal.

In addition, the plurality of laser diodes 101 are connected to the outputs of the plurality of driving units 102.

Since the output terminals of the first multiplexer 600, which sequentially generate outputs to the output terminals under the control of the microprocessor 300, are connected to the inputs of the plurality of driving units 102, the plurality of driving units 102 may be sequentially input by the microprocessor 300. The driving outputs are supplied to the two driving units 102, and the laser outputs are sequentially emitted from the plurality of laser diodes 101 by these driving outputs.

Therefore, the laser light of the specific laser diode 101 that is irradiated and reflected on a plurality of points on the road surface and is incident on the APD 201 through the receiving lens 200 is arranged in a specific position among the plurality of APDs 201 at corresponding positions. It is incident on 201, and this state is shown in Fig. 5B.

In this way, the signal received by the specific APD 201 is amplified to an appropriate size by each dedicated amplifier 202, which is input to the microprocessor 300 via the second multiplexer 601.

In this process, in the present invention, the plurality of laser diodes 101 are provided by only one transmitting lens by the plurality of driving units 102 supplied with the control output by the first multiplexer 600 controlled by the microprocessor 300. A plurality of APDs 201 sharing a common use of 100 and receiving one receiving lens 200 receive the laser light of each specific laser diode 101 and are independent of the plurality of amplifiers 202. After amplification to the microprocessor 300 is sequentially input via the second multiplexer 601, the microprocessor 300 is to obtain the driving-related data at several points.

That is, as shown in FIG. 6A, the laser beam emitted from the laser diode 101 of the transmitter 103 arrives at a plurality of points arranged at the left and right sides of the lane width so that the plurality of laser diodes 101 may pass when the vehicle passes. If all lasers emitted through the transmission lens 100 are reflected by the vehicle, the laser arrival time received by the APD 201 is shorter than before the vehicle enters, and the height of the vehicle is calculated based on the time change value. In the example shown in FIG. 6A, since both lasers are reflected by the vehicle, it may be determined that the vehicle width of the vehicle is a very large vehicle.

On the other hand, as shown in FIG. 6B, if one of the lasers emitted through the transmission lens 100 from the plurality of laser diodes 101 is reflected by the vehicle and the other two are reflected from the road surface, the APD 201 is shown. The two laser arrival times received by) are the same as before the vehicle passes, but only one is shorter than before the vehicle enters, and the height of the vehicle can be calculated on the basis of this time change value. Since it is reflected by the road surface, the vehicle width of the vehicle is smaller than the distance value 2s in FIG. 5A, so it can be determined that the vehicle is a small vehicle.

Therefore, in the present invention, as the number of installations of the laser diode 101 is increased to three or more, the width of the vehicle can be divided and calculated in several steps.

In addition, in the present invention, a change in distance is measured according to time according to the shape of the vehicle when the vehicle passes. Therefore, the microprocessor 300 compares the change value of the distance according to the passage of the vehicle with the change form of the distance upon passing the vehicle according to the type of the vehicle stored in the memory 400 and the vehicle width measured by the above-described process. You can identify the car model.

That is, as shown in FIG. 7, the point at which the laser beam emitted by the laser diode 101 arrives is arranged in the left and right sides of the lane width and divided into the front row and the rear row. Two 101 are installed at the front and two at the rear, and these four laser diodes 101 are fired downward by one transmitting lens 100, and one receiving lens 200 not shown in the figure. By receiving the lasers emitted from the four laser diodes 101 sequentially in the four APDs 201, the laser reflection height of the vehicle passing through the four points is changed, so that the front and rear two points The profile is the same in shape but a parallax occurs, and this parallax is calculated by the microprocessor 300.

Therefore, the speed of the vehicle can be calculated by the parallax of this profile, and in particular, by the two front and rear two laser diodes 101 installed, the vehicle can move down at least one row of the front and rear laser diodes 101. As it passes, it can be usefully used for detecting the speed of a vehicle passing through a wide road.

In addition, it can be usefully used for the purpose of identifying the vehicle type by calculating the vehicle width and length by the arrangement of the laser diode 101 of another form.

That is, as shown in FIG. 8, the laser diodes 101 are divided into a front row and a rear row, and a total of eight are installed in each of four, so that the laser diodes 101 are all installed inside one transmission lens 100. In addition, eight APDs 201 are installed inside the receiving lens 200, which is not shown, so that the laser is irradiated and reflected at divided intervals on the road surface of the entire section of the road with wide vehicle width. In this state, the vehicle is narrowed by lasers irradiated at divided intervals on the road surface of all sections, and reflects only one laser in the front row and the rear row, respectively, and two laser diodes 101 in the front row and the rear row, or Since there may be a case where all three or four are reflected, the width of the vehicle can be subdivided and detected. In this case, the parallax of the profile by the laser emitted by the laser diode 101 of the front row and the rear row is also APD. Since the length of the vehicle can be calculated by detecting the output signal of 201, the vehicle model of the vehicle can be more accurately determined.

In addition, in order to detect a vehicle using a plurality of laser diodes 101 in the form as shown in FIG. 8, eight laser diodes 101, eight driving units 102, eight APDs 201, and an amplifying unit 202 are provided. Since there is a need to increase the manufacturing cost of the equipment.

Therefore, it may be implemented in the form as shown in FIG. 9 to reduce the manufacturing cost and simplify the structure.

That is, in the present invention of this embodiment as shown in Figure 9 the laser beam emitted by the laser diode 101 reaches the point that is arranged in the left and right of the lane width and divided into a front row and a rear row and a plurality of front row and rear row The laser diodes 101 are staggered in the traveling direction of the vehicle.

That is, two laser diodes 101 are installed in the front row and two rear rows, but the laser diode 101 in the front row and the laser diode 101 in the rear row are staggered and distributed to the left and right to disperse the laser diode 101 in the front row. ) And a vehicle that is as wide as the width arranged by the rear row laser diode 101 can be detected, and the front row row and the rear row row laser diode 101 receive the laser beam emitted to the APD 201 By detecting the profile parallax of the rear row, the length can be calculated to detect the vehicle model.

In particular, in this embodiment, since the number of uses of the laser diode 101, the driver 102, the APD 201, and the amplifier 202 can be reduced to 1/2 compared to the embodiment shown in FIG. Can be significantly reduced.

Accordingly, according to the embodiment as shown in FIG. 9, the vehicle model can be determined by calculating the vehicle width and length while minimizing the number of expensive related parts.

In addition, in the present invention, the width (s) of the laser reaching the road surface in FIG. 5a is widened or the number of laser diodes 101 is increased to increase the width of both ends of the laser reaching the road surface as shown in FIG. 10. It is possible to detect vehicle traffic on a wide road or multiple lanes, and in some cases, to obtain data on vehicle traffic of multiple lanes as well as whether a vehicle passes through multiple lanes such as shoulders. It can be used for purposes.

In this way, in the present invention, by one system, an excellent function of identifying a vehicle type of a vehicle traveling on a wide road or passing through a plurality of lanes, and identifying the presence or absence of a vehicle driving on a shoulder Will be provided.

)를 산출할 수 있게 됨을 물론이다.7, 8, and 9 in the present invention, since the distance change profile of the state in which the distance due to the vehicle changes is calculated, respectively, the speed is expressed by the following equation based on the time difference at which such profile is output. (

Of course it can be calculated.

(여기서

는 전방렬과 후방렬간의 간격이고

는 차량의 프로파일이 시작되는 시점의 시간 차)

(here

Is the distance between the front row and the back row

Is the time difference when the profile of the vehicle starts)

In addition, the input and output interface 500 in the present invention can be connected to a wired LAN card or a wireless CDMA terminal for transmitting and receiving data to the outside, and send various data to the outside, and analyzes the various data from the server By identifying the car type, it can be applied to toll charges by car type, and it is possible to secure useful data such as the analysis of traffic volume by car type.

Of course, it can also be used for speeding the vehicle.

In the present invention, a plurality of laser diodes 101 are installed in one transmission lens 100 as described above, and a plurality of APDs 201 are installed in one receiving lens 200 to identify a vehicle model. It is a matter of course that modifications can be made by adding various known means or methods within the scope of maintaining the technical characteristics of acquiring a wide range of vehicle-related data.

In addition, in the present invention, the plurality of driving units 102 controlled by the microprocessor 300 are sequentially controlled by the first multiplexer 600, and the outputs of the plurality of amplifying units 202 are also the second multiplexer 601. Received signals are sequentially input through

As shown in FIG. 11, hardware for implementing the functions of the first and second multiplexers 600 and 601 may be embedded in the microprocessor 300 or through a plurality of input / output interface terminals by a program of the microprocessor 300. Optionally, a predetermined output may be applied to the plurality of driving units 102 or the output of the amplifying unit 202 may be selectively received.

In the embodiments of the present invention as described above, the technical features of the present invention are implemented in the most general form, but various modifications may be made by adding or replacing various known components within the scope of maintaining the technical identity with the present invention. Of course it is possible.

1 is a photograph showing a data acquisition system related to a driving vehicle using a conventional laser;

Figure 2 is an electrical configuration of a driving vehicle-related data acquisition system using a conventional laser.

3 is an explanatory diagram showing an example in which a conventional electronic toll collection system is installed.

Figure 4 is an electrical diagram showing a vehicle driving data acquisition system according to the present invention.

5A is a conceptual explanatory diagram of a vehicle driving related data acquisition system according to the present invention;

5B is an explanatory diagram showing an actual transmission and reception state of a vehicle driving data acquisition system according to the present invention;

6A is an explanatory diagram showing a state in which a laser emitted from a system according to the present invention is irradiated to a wide vehicle;

6B is an explanatory view showing a state in which a laser emitted from a system according to the present invention is irradiated to a wide vehicle;

7, 8, and 9 are explanatory diagrams showing an example of using the present invention for measuring the speed.

10 is a conceptual diagram of a system according to the present invention for measuring a wide road surface.

11 is an electrical diagram showing another embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

100: transmission lens 101: laser diode 102: drive unit

103: transmitter 200: receiver lens 201: APD

202: amplifier 203: receiver 300: microprocessor

400: memory 500: input / output interface 600: first multiplexer

601: second multiplexer

Claims (6)

delete delete delete delete delete A transmitter having a driver for driving a laser diode installed inside the transmission lens, a receiver having an amplifier connected to the APD installed inside the receiver lens, and controlling the transmitter and the receiver while calculating speed, profile extraction, and the like. In a known laser driving vehicle data acquisition system provided with a microprocessor for data processing, a memory for storing various data, and an input / output interface for inputting and outputting various data, Install a plurality of laser diodes inside the above-described transmission lens, and connect the plurality of laser diodes and the outputs of the plurality of driving units, Connect the input of the driver to the microprocessor, Install a plurality of APD inside the above-mentioned receiving lens, connect the plurality of APD and the plurality of inputs of the amplifier, connect the output of the amplifier to the microprocessor, The plurality of laser diodes installed inside the above-described transmission lens are fixed to be spaced apart at intervals that generate the interval between the laser irradiation target points, The plurality of APDs installed inside the above-described receiving lens are arranged at the same interval as the plurality of laser diodes described above, The laser beam emitted by the above-described laser diode reaches a plurality of points, arranged in the left and right of the lane width and divided into the front row and the rear row, and the laser diodes in the front row and the rear row are alternately arranged in the traveling direction of the vehicle. Vehicle data acquisition system for point measurement.

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