JP3412457B2 - Vehicle length measuring device and vehicle monitoring device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle length measuring device and a vehicle monitoring device. These include, for example, it can be utilized in a system for monitoring whether the vehicle traveling on the road is are illegally modified.

[0002]

2. Description of the Related Art For example, in a vehicle traveling on a road,
For large vehicles such as trucks, the vehicle specifications may be changed depending on the mounted object or the vehicle towed.
Such changes are permitted within the permissible range specified by law, and if the permissible range is exceeded, approval must be obtained. If approved, the license plate information and changes of this vehicle will be registered in the terminal of the special vehicle registration agency.

On the other hand, the vehicle may be used as a so-called illegally modified vehicle in which the specifications of the vehicle are modified without the approval as described above, and the safety of traffic may be impaired. Under such circumstances, it is desired to monitor whether the illegally modified vehicle is traveling on the road.

Here, conventionally, when a traveling vehicle is detected, the rear end of the vehicle is imaged by an image pickup device such as a plurality of CCD cameras, edge processing is applied to each of the obtained images, and the edges of these edges are detected. It is considered that the vehicle height and the vehicle width are measured from the characteristic points of (1) and the vehicle length is estimated.

[0005]

By the way, in the above-mentioned conventional example, the following problems are pointed out. First of all, since the imaging device is used, it is not possible to accurately measure the specifications of the vehicle when there is a change in the environment such as the weather or when the color of the vehicle is similar to the color of the road surface. . In addition, since the measurement is performed based on an image obtained by capturing a narrow range of several meters with the image capturing device, a portion of the vehicle that does not fall within the image capturing range cannot be measured, and there is no choice but to estimate such a portion. The measurement cannot be said to be accurate. Further, for vehicles of various specifications, it is necessary to find the same point of the edge from the image taken by the image pickup device, but it is difficult to find the same point of the edge, and therefore the accuracy of the measurement result is low. Can be said to be low.

Therefore, it is an object of the present invention to mainly enable the length of a traveling vehicle to be accurately measured without being confused by the background or the color tone of the road surface due to environmental changes.

[0007]

The invention according to claim 1 is a vehicle
It is installed at the required position on the road to check the passage of the running vehicle.
To get out, it is scanned across the width of the vehicle
The first detection means having a laser sensor that
At a location downstream of the installation position of the first detection means in the traveling direction
Installed at the required position to detect the front part of the vehicle
The laser that is scanned in the direction of travel of the vehicle.
Running with the second detection means having a sensor and the first detection means
Is detected by the second detecting means at the time when the rear passage of the vehicle is detected.
That the detection of the head position of the vehicle both from the head position
The distance to the installation position of the first detection means is defined as the vehicle length of the vehicle.
A vehicle length measuring device including:

According to the invention of claim 2, the number of traveling vehicles is reduced.
While measuring parameters such as width, height, and length,
Identify the vehicle license plate and respond to this identification information
The standard vehicle specifications information and the measured vehicle specifications information
Compare and output according to the comparison result, and
The vehicle length measuring device according to claim 1 is used only for the vehicle length.
Vehicle monitoring equipment characterized by
Place

According to the invention of claim 3, the number of traveling vehicles is reduced.
With measuring means for measuring specifications such as width, height, and length,
Various reference vehicle types classified by vehicle license plate
The storage means in which the original information is stored in advance and the vehicle's
And the identification means for identifying the
Corresponding reference vehicle from the storage means based on the identification information
The extraction means for extracting the specification information and the extraction means
Standard vehicle specifications information and vehicle specifications measured by measuring means
Management means to compare information and output according to the comparison result
And, the measuring means includes the length of the vehicle.
Only using the vehicle length measuring device according to claim 1
A vehicle monitoring device characterized by the following.

According to the invention of claim 4, the number of traveling vehicles is reduced.
With measuring means for measuring specifications such as width, height, and length,
Various reference vehicle types classified by vehicle license plate
The first storage means in which the original information is stored in advance and the vehicle are
License plate information for special vehicles that have been changed and approved
And second storage means in which vehicle specification change information is registered in advance
And identification means for identifying the license plate of the vehicle
And the detection vehicle is a special vehicle based on the identification information by the identification means.
Search the second storage means to see if they are registered as both
Recognizing by recognizing and registering by recognizing
When the second memory means is recognized
While extracting the vehicle specification change information, confirm that it has not been registered.
The reference vehicle corresponding to the first storage means when recognizing
Extraction means for extracting the original information and extraction by the extraction means
Vehicle specification change information or reference vehicle specification information and measuring means
Comparing means for comparing the vehicle specification information measured by
Output means for outputting according to the comparison result of the comparison means.
In addition, the measuring means only contracts for the length of the vehicle.
It is measured using the vehicle length measuring device described in claim 1.
That, vehicle monitoring device.

According to the invention of claim 5, the number of traveling vehicles is reduced.
With measuring means for measuring specifications such as width, height, and length,
Various reference vehicle types classified by vehicle license plate
The storage means in which the original information is stored in advance and the vehicle's
Change the specifications of the vehicle and the identification means to identify the vehicle plate
License plate information and vehicles licensed for special vehicles
The end of a special vehicle registration agency that has registered the specification change information in advance.
The communication means to communicate with the end device and the identification information by the identification means
Whether the detected vehicle is registered as a special vehicle based on
Is recognized by communicating with the terminal and searching
Recognized by the recognition means and recognized by the recognition means
Sometimes read the relevant vehicle specification change information from the terminal
On the other hand, if you recognize that you have not registered,
Read-out means for reading the corresponding reference vehicle specification information from the tier
And the vehicle specification change information read by the reading means or
Is the standard vehicle specification information and the vehicle specifications measured by the measuring means.
The comparison means for comparing information and the comparison result of the comparison means
Output means for performing the same output, and the measuring means
Is the vehicle length measurement according to claim 1 only for the length of the vehicle.
A vehicle monitoring device that measures using a device.

The invention of claim 6 is described in claim 4 or 5.
In the mounted vehicle monitoring device, the comparison means is a vehicle specification.
Change information or reference vehicle specification information and the measurement means
Compared with the measured vehicle specification information to determine whether it is within the allowable range.
The output means is permitted by the comparison means.
When it is determined that the vehicle is not within the acceptable range,
A warning is issued and the identification means is used to identify
License plate information, comparison result by the comparison means
Also , a vehicle monitoring device that holds a vehicle detection position and the like .

In summary, according to the present invention, in order to measure the length of the traveling vehicle, the front and rear positions of the vehicle in a specific section are not estimated by using a captured image as in the conventional case. Is detected so as not to be affected by changes in environment color, road surface color, moving speed (traveling speed).

Further, according to the present invention, the structure in which the length of the vehicle can be accurately measured as described above is diverted to determine whether or not the specifications of the vehicle are within the required permissible range. I am able to recognize it accurately.

[0015]

DETAILED DESCRIPTION OF THE INVENTION The details of the present invention will be described with reference to the embodiments shown in FIGS.

1 to 9 relate to an embodiment of the present invention. FIG. 1 is a block diagram of a vehicle monitoring device, and FIG.
Is a configuration diagram of each laser sensor, FIG. 3 is a conceptual diagram showing an installation state of a vehicle monitoring device, FIG. 4 is a plan view of first to third laser sensors, and FIG. 5 is first to third laser sensors. FIG. 6 is a conceptual diagram showing a scanning mode according to FIG.
FIG. 8 is a diagram showing a vehicle monitoring routine, FIG. 8 is a diagram showing a vehicle specification recognition routine, and FIG. 9 is a diagram showing a laser light propagation time corresponding to vehicle width and vehicle height measurement.

As shown in FIG. 1, the vehicle monitoring device measures a first laser sensor 1 used to measure a vehicle height H of a vehicle 21 traveling on a road 20 and a vehicle width W of the traveling vehicle 21. The second and third laser sensors 2 and 3 used for the measurement, the fourth laser sensor 4 used for measuring the vehicle length L of the traveling vehicle 21, and the axial load measurement for measuring the axial load of the vehicle 21 such as a truck. Device 5 and license plate 22 of vehicle 21
CCD camera 6 for picking up images and CCD on the road 20
A lighting device 7 that illuminates the imaging area of the camera 6, and a road 20.
The vehicle includes a display panel 8 for notifying required information to the vehicle 21 traveling on the road, and a control device 9 for managing at least the processing shown in FIGS. 7 and 8.

In FIG. 1, reference numeral 10 denotes a terminal of a special vehicle registration agency, and when the specification change of the vehicle 21 is approved, the terminal 10 is license plate information as a special vehicle in advance. And vehicle specification change information is registered.

The control device 9 described above has at least various data depending on the database 11 in which the reference vehicle specification information on various vehicles is stored in advance, the result of recognizing the specifications of the vehicle 21, the license plate information, and the recognition result. It is provided with a writable / erasable storage means 12 for appropriately storing information about a vehicle whose origin is illegally changed, and a communication means 13 for communicating with the terminal 10 of the special vehicle registration agency. In addition,
The database 11 includes a compact disk (C) in addition to a semiconductor device such as a ROM and a hard disk device (HDD).
D) is a storage medium such as a floppy disk (FD), and the storage unit 12 is a semiconductor device such as a RAM or a hard disk device (HDD).

The above-mentioned first to fourth laser sensors 1 to 4 are
In both cases, as shown in FIG.
A scanning device 32 such as a polygon mirror, and a light receiving element 33
An optical system 34 and a drive circuit 35 for the laser light emitting element 31.
A light receiving circuit 36 for converting an optical signal received by the light receiving element 33 into an electric signal, and a scanning position detecting device 37 for detecting a scanning position by the scanning device 32. Then, the laser light emitting element 31 is driven via the drive circuit 35 in accordance with a command from the control device 9, and the scanning direction of the scanning device 32 is controlled. On the other hand, the control device 9 recognizes the scanning direction of the laser light supplied from the scanning position detection device 37 and requires from the time when the laser light emitting element 31 emits the laser light to the time when the light receiving element 33 receives the reflected light. The distance is calculated by recognizing the time, that is, the propagation time of the laser light.

Next, the installation situation of the above-mentioned vehicle monitoring device on the road 20 will be described with reference to FIGS. 3 to 5.

That is, the required section of the road 20 is
Three gate posts 23, 24, 25 are installed at required intervals. First to third laser sensors 1 to 3 are installed in the first gate post 23 in parallel in the width direction and before and after a required interval in the traveling direction of the vehicle 21, and in the second gate post 24, 4 laser sensor 4, CCD camera 6 and illumination device 7 are installed, and display panel 8 is installed on third gate post 25. Furthermore, the first gatepost 23 and the second gatepost 24
Axle load measuring device 5 is embedded in a road 20 between and.

The first laser sensor 1 is located substantially at the center of the road 20 in the width direction, and the second laser sensor 2 is located on the road 20.
On the right side in the width direction (right side when viewed from the traveling direction of the vehicle 21),
The third laser sensor 3 is located on the left side in the width direction of the road 20 (vehicle 2
The fourth laser sensor 4 is located on the left side when viewed from the traveling direction of 1).
Are respectively arranged at substantially central positions in the width direction of the road 20, and the first to third laser sensors 1 to 3 are all scanned in the width direction of the road 20 as shown in FIGS. 4 and 5. The fourth laser sensor 4 is scanned in the traveling direction of the road 20, as shown in FIG. In addition, the CCD camera 6 is used for the first gatepost 23 and the second gatepost 23 of the road 20.
The illumination device 7 is arranged so as to image the required area between the gatepost 24 and the diagonally downward direction, and the illumination device 7 is arranged so as to illuminate the imaging area of the CCD camera 6.

These first to fourth laser sensors 1 to 4 are
The controller 9 is driven at a required timing to scan the required area of the road 20 so as to irradiate the laser light from a required angle, and detect the reflected light from the road 20 or the vehicle 21. . Here, the control device 9 recognizes the scanning direction of the laser light given from each scanning position detection device 37 of the first to third laser sensors 1 to 3, and the lasers of the first to third laser sensors 1 to 3 are detected. The time required from the time when the light is emitted to the time when the reflected light is detected, that is, the propagation time of the laser light is recognized, and the vehicle width W and the vehicle height H of the vehicle 21 are obtained based on this propagation time. Also,
As shown in FIG. 6, the control device 9 controls the first laser sensor 1
When the passage of the vehicle 21 is detected by, the time from the emission of the laser light by the fourth laser sensor 4 to the detection of the reflected light, that is, the propagation time of the laser light is recognized,
The head detection position of the vehicle 21 is recognized from this propagation time, and the distance from the head position to the installation position of the first laser sensor 1 is determined as the vehicle length L of the vehicle 21.

Next, the control device 9 of the vehicle monitoring device described above.
The process will be described with reference to FIGS. 7 to 9.

First, the overall operation of vehicle monitoring will be described with reference to FIG. That is, the first laser sensor 1 causes the road 20
The laser light is scanned on the required area (S1). Here, when the vehicle 21 traveling on the road 20 enters the installation section of the vehicle monitoring device, the entry of the vehicle 21 is detected based on the output signal given from the first laser sensor 1 (S
2), the second to fourth laser sensors 2 to 4 are driven to recognize the specifications of the vehicle 21 as described later (S3), the license plate 22 of the vehicle 21 is imaged by the CCD camera 6, and the image is taken. The outer dimensions and description contents of the license plate 22 are identified based on the image information (S4). It should be noted that although it is recognized whether the vehicle is a large vehicle or an ordinary vehicle based on the outer dimensions and description of the license plate 22, this method is well known, and therefore detailed description thereof will be omitted.

After that, from the information of the license plate 22 identified in S4, it is checked whether the vehicle 21 is registered as a special vehicle in the terminal 10 of the special vehicle registration agency (S5), and it is determined whether or not the vehicle is registered. Yes (S6). In this registration presence / absence determination, the control device 9 communicates with the terminal 10 of the special vehicle registration agency through the communication unit 13 and is the vehicle 21 identified in S4 above registered as a special vehicle that has been approved for specification change? This is done by searching for whether or not.

When it is determined in S6 that the vehicle has been registered, the vehicle specification change information for the corresponding special vehicle is read from the terminal 10 (S7), and the read vehicle specification change information and the vehicle 21 recognized in S3 are read. (S8), and it is determined whether the comparison result is within the allowable range (S9). If it is out of the allowable range, a message such as "Vehicle specifications are different from the approval details" is displayed on the display panel 8 to notify the driver of the vehicle 21 and the detected vehicle is detected. The license plate information regarding 21, the information regarding the recognized vehicle specifications, the information regarding the detection point and the time, etc. are stored in the storage means 12 of the control device 9 (S13), and then the processing ends, but if it is within the allowable range. , Ends without notifying the user.

On the other hand, when it is determined in S6 that there is no registration, the reference vehicle specification information on various vehicles stored in the database 11 of the control device 9 is read (S10),
The reference vehicle specification information is compared with the specification information of the vehicle 21 recognized in S3 (S11), and it is determined whether the comparison result is within the allowable range (S12). Here, when the value is outside the allowable range, a message such as "the vehicle specifications exceed the allowable range" is displayed on the display panel 8 to notify the driver of the vehicle 21 and it is detected. License plate information about the vehicle 21, information about the recognized vehicle specifications, information about the detection point and time, etc. are stored in the storage means 12 of the control device 9 (S13), and then the processing ends, but if it is within the allowable range. Ends without the above notification.

The process of recognizing the specifications of the vehicle 21 in S3 will be described with reference to FIG.

First, the vehicle width W and the vehicle height H of the vehicle 21 are measured in real time and the axle load is measured from the detection of the entry of the vehicle 21 in S2 to the detection of the passage of the vehicle 21 (S22). After the measurement, the storage means 1 of the control device 9
2 is sequentially temporarily stored (S21), and the vehicle length L is measured at the time when passage of the vehicle 21 is detected, and then temporarily stored in the storage means 12 of the control device 9 (S23). Thereafter, the specifications of the vehicle 21 are recognized based on the stored vehicle width W, vehicle height H, vehicle length L, and axle weight at a plurality of positions in the lengthwise direction of the vehicle 21, and the recognition result is stored in the storage means. 12 (S2
4).

Specifically, FIG. 9 is a graph showing propagation time data obtained by the first to third laser sensors 1 to 3 and corresponding to a cross section of the vehicle 21 orthogonal to the traveling direction. The propagation time of the reflected light becomes longer when the vehicle 21 is reflected on the road surface without the vehicle 21 and becomes shorter when the vehicle 21 reflects it, so that the propagation time data D1 and D of FIG.
The vehicle width W and the vehicle height H are detected based on 2 and D3. That is, the vehicle width W is calculated from both edges E1 and E2 in the data D1 and D2 in the figure, and the vehicle height H is calculated from the time difference between the reflection time on the road surface R and the reflection time on the upper surface of the vehicle C. It Then, by measuring the vehicle width W and the vehicle height H a plurality of times in real time, two-dimensional sectional shape data of the vehicle 21 at a plurality of locations in the length direction can be obtained. The axial load is measured by the axial load measuring device 5 by a generally known method.

Further, the vehicle length L is based on the detection signals given from the first laser sensor 1 and the fourth laser sensor 4 when the vehicle 21 passes the required position (the installation position of the first laser sensor 1). , The head position of this vehicle 21
The distance from the detected leading position to the required position is detected as the vehicle length L of the vehicle 21 by the laser sensor 4. From the vehicle length L and the above-described plurality of two-dimensional cross-sectional shape data, vehicle specification information indicating the three-dimensional shape of the vehicle 21 can be created.

Correspondences between the respective means of the claims in the above embodiment will be described. That is, in claims 2 and 6, the first detection means is the first laser sensor 1, the second detection means is the fourth laser sensor, and the management means is the control device 9.
Corresponds to each. In Claims 10-14, a measurement means is a 1st-4th laser sensor 1-4 and a control device 9.
The identifying means is the CCD camera 6 and the controller 9, the recognizing means, the extracting means, the managing means, the comparing means and the outputting means are the controller 9, and the storing means of claim 12 and the first storing of claim 13. The means correspond to the database 11, respectively.

As described above, according to the vehicle monitoring device in the above embodiment, it is possible to automatically and accurately recognize whether or not the specifications of the vehicle 21 traveling on the road 20 are illegally changed. It is possible to contribute to traffic safety by, for example, diverting the control of the vehicle 21 whose specifications are illegally changed. In particular, in the above-described embodiment, the vehicle length L of the vehicle 21, which has been difficult in the past, can be accurately measured, so that the above-described specifications of the vehicle 21 can be accurately checked.

The present invention is not limited to the above embodiment, and various applications and modifications are conceivable. (1) In the above embodiment, the first to third laser sensors 1
3 to 3 are arranged so as to be shifted in the front-rear direction of the vehicle 21, but they may be arranged to be aligned in the width direction of the road 20. Further, in the above-described embodiment, after only the laser light emitting element 31 of the first laser sensor 1 is driven and the vehicle 21 is detected by the first laser sensor 1, each laser of the second to fourth laser sensors 2 to 4 is detected. Although the light emitting element 31 is driven, they may be driven simultaneously.
In the case of the above embodiment, it is possible to extend the life of each laser light emitting element 31 of the second and third laser sensors 2 and 3. Also, regarding the driving of the laser light emitting element 31 of the first laser sensor 1, the life can be extended by performing thinning scanning until the vehicle 21 is detected. (2) In the above embodiment, the first to third laser sensors 1
Although the numbers 3 to 3 are scanned in the width direction of the road 20, they may be scanned in the traveling direction of the vehicle 21. (3) In the above embodiment, another method can be considered for measuring the vehicle length of the vehicle 21. For example, as shown in FIG. 10, a speed measurement device 30 that measures the speed of the traveling vehicle 21 is installed upstream of the first gate post 23 in the traveling direction, and
As shown in 1 (a) to (c), while the first laser sensor 1 detects the entry of the vehicle 21 until the passage of the vehicle 21 is detected, the speed measurement device 30 tracks the vehicle 21. The vehicle speeds V1 to Vn are sequentially measured in real time T1 to Tn, and the vehicle speeds V1 to Vn that are sequentially obtained are integrated by the time difference Δt at each speed measurement time.
Can be measured. The velocity measurement is performed by irradiating a laser beam (not shown) mounted on the rear portion of the vehicle 21 from the laser radar to measure the propagation time of the laser beam and measuring the distance to the reflector. Measure speed based on and. Also in this case, the vehicle length L can be measured with high accuracy even when the vehicle 21 is accelerating and decelerating, as in the above embodiment. This example corresponds to claims 9 and 10. Further, by performing such speed measurement in real time and measuring the vehicle width W and the vehicle height H in the above-described embodiment together, vehicle specification information indicating the three-dimensional shape data of the vehicle 21 can be created. . (4) In the above embodiment, the vehicle 2 traveling on the road 20.
1 exemplifies the vehicle monitoring device that recognizes whether the specifications of 1 are within the permissible range, the present invention is an object monitoring device that recognizes, for example, what shape an object to be moved on the conveyor belt has. Can also be applied. Further, the configuration relating to the vehicle length measurement of the vehicle 21 in the above-described embodiment and the above (3) and the configuration relating to the above-described object length measurement should be performed independently of the vehicle monitoring device and the object monitoring device. You can

[0037]

According to the vehicle length measuring device of the first aspect of the present invention, the length of the running vehicle is not estimated by using the captured image as in the prior art, but the front and rear position of the vehicle is determined in a specific section. Since the physical measurement is performed by detecting, the length of the traveling vehicle can be easily and accurately measured regardless of, for example, changes in environmental color, road color, and traveling speed.

According to the vehicle monitoring apparatus of the inventions of claims 2 to 6 ,
By using the vehicle length measuring device according to the first aspect of the invention , the specifications of the traveling vehicle are obtained, and it becomes possible to accurately recognize whether or not the traveling vehicle illegally changes the specifications.

In particular, in the inventions of claims 4 and 5 , it is possible to accurately determine whether or not a special vehicle, which is approved by changing the specifications of the vehicle, is within the allowable range of the approved specifications. You will be able to recognize.

Further, according to the invention of claim 5 , the vehicle monitoring device is provided with no extra storage means by communicating with the terminal of the special vehicle registration agency to retrieve necessary information. It is cost effective.

Further, in the invention of claim 6 , as a measure when the specifications of the detected vehicle exceed the allowable range, a warning is given to the vehicle driver. Therefore, the warning causes the vehicle driver to feel the improvement of the specifications. It will be possible to contribute to ensuring traffic safety. In addition to this, since license plate information, specification information, position information of the monitoring site, etc. of the detected vehicle are held as the above-mentioned measures, these information can be used as evidence of illegal modification of vehicle specifications.

As described above, the present invention can greatly contribute to the improvement in accuracy and the improvement in reliability of the vehicle length measuring device and the vehicle monitoring device.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of a vehicle monitoring device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of each laser sensor in FIG.

FIG. 3 is a conceptual diagram showing an installation situation of the vehicle monitoring device of FIG.

FIG. 4 is a plan view of each laser sensor installed on the first gate pole of FIG. 3;

5 is a conceptual diagram showing a scanning mode by each laser sensor installed on the first gate pole of FIG. 3;

FIG. 6 is a conceptual diagram of vehicle length measurement in the same embodiment.

FIG. 7 is a diagram showing a vehicle monitoring routine in the same embodiment.

FIG. 8 is a diagram showing a vehicle specification recognition routine in the same embodiment.

FIG. 9 is a diagram showing a propagation time of a laser beam corresponding to vehicle width and vehicle height measurement in the same embodiment.

10 is a diagram corresponding to FIG. 3 according to another embodiment of the present invention.

FIG. 11 is a conceptual diagram related to vehicle speed measurement according to the embodiment of FIG.

[Explanation of symbols]

1 First laser sensor 2 Second laser sensor 3rd laser sensor 4th laser sensor 6 CCD camera 8 display panel 9 Control device 10 Terminals of special vehicle registration agencies 11 Control device database 12 Storage means of control device 13 Communication means of control device 20 roads 21 vehicles 22 number plate

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsumi Obuchi 10 Hanazono Todocho, Ukyo-ku, Kyoto Prefecture Kyoto Prefecture Omron Co., Ltd. (56) References JP-A-5-141937 (JP, A) JP-A-8-233525 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G01B 11/04 G01B 21 / 02 G08G 1/017

Claims (6)

(57) [Claims] 1. A vehicle which is installed at a required position on a vehicle traveling path for traveling.
The width direction of the vehicle driveway to detect the passage of vehicles inside
Detection hand having a laser sensor that is scanned in
The step and the vehicle traveling path are advanced beyond the installation position of the first detection means.
Is installed at the required position downstream in the direction of
Scanning in the direction of travel of the vehicle to detect
Detection means having a laser sensor to be operated and the first detection means detecting the passage of the rear of the running vehicle.
By detecting the head position of the vehicle by the second detecting means in
From the top position to the installation position of the first detection means
A vehicle length measuring device comprising: a management unit that obtains a distance as a vehicle length of the vehicle . 2. At least the width, height and length of a traveling vehicle.
While measuring various parameters such as
The standard vehicle specifications that identify the rate and correspond to this identification information
Information and the measured vehicle specification information are compared, and the comparison result
Output according to the
Only by using the vehicle length measuring device according to claim 1.
A vehicle monitoring device characterized by: 3. At least the width, height and length of a traveling vehicle
Of various standard vehicles classified by the license plate of the vehicle
Storage means in which original information is stored in advance , identification means for identifying the license plate of the vehicle, and corresponding storage means based on the identification information by the identification means
The extracting means for extracting the reference vehicle specification information, and the reference vehicle specification information and the measuring means extracted by the extracting means.
Compared with the measured vehicle specification information, depending on the comparison result
And a measuring means for performing an output, and the measuring means only for the length of the vehicle.
It is measured by using the vehicle length measuring device described in 1.
A vehicle monitoring device characterized by the above. 4. At least the width, height and length of a traveling vehicle.
Of various standard vehicles classified by the license plate of the vehicle
First storage means in which original information is stored in advance, and a special vehicle number pre-authorized by changing the specifications of the vehicle
The second note in which the vehicle information and vehicle specification change information are registered in advance.
Storage means, identification means for identifying the license plate of the vehicle, and the detection vehicle is a special vehicle based on the identification information by the identification means.
Then, the second storage means can be searched to see if it is registered.
The recognition means for recognizing by and the second description when the recognition means recognizes that it is registered.
While extracting the relevant vehicle specification change information from the memory,
From the first storage means when it is recognized that it has not been registered
Extraction means for extracting the corresponding reference vehicle specification information and vehicle specification change information or reference extracted by the extraction means
Vehicle specification information and vehicle specification information measured by measuring means
And a means for outputting the output according to the comparison result of the comparison means.
And the measuring means is only for the length of the vehicle.
It is measured by using the vehicle length measuring device described in 1.
A vehicle monitoring device characterized by the above. 5. Width, height and length of at least a traveling vehicle
Of various standard vehicles classified by the license plate of the vehicle
Storage means in which original information is stored in advance, identification means for identifying the license plate of the vehicle, and license plate for a special vehicle approved by changing the specifications of the vehicle.
Special vehicles with pre-registered vehicle information and vehicle specification change information
Communication means for communicating with the terminals of both registration agencies, and the detection vehicle is a special vehicle based on the identification information by the identification means.
And whether it is registered by communicating with the terminal.
Recognizing means for recognizing by searching, and the end when recognizing that it is registered by the recognizing means.
While reading the relevant vehicle specification change information from the end device,
When it is recognized that it has not been recorded,
Reading means for reading the reference vehicle specification information, and the vehicle specification change information or the basic information read by the reading means.
Quasi-vehicle specification information and vehicle specification information measured by measuring means
Comparing means for comparing the door, and an output unit for performing an output corresponding to the comparison result of the comparison means including
And the measuring means is only for the length of the vehicle.
It is measured by using the vehicle length measuring device described in 1.
A vehicle monitoring device characterized by the above. 6. The vehicle monitoring device according to claim 4 or 5.
In the above, the comparison means may be the vehicle specification change information or
Standard vehicle specification information and vehicle specification information measured by the measuring means
It judges whether it is within the allowable range by comparing with the
The output means must be within the allowable range by the comparison means.
When it is judged, a warning is issued downstream of the vehicle traveling direction.
Together with the number play identified by the identification means
Information, comparison results by the comparison means, and vehicle detection
A vehicle monitoring device for holding a position and the like .