JP3333383B2 - Photographing position detecting device for heavy-duty vehicle and photographing device for axle-violating vehicle using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographing position detecting device for a large vehicle, which detects that a large vehicle passing through a predetermined passage such as an entrance of a highway has reached a predetermined photographing position, and using the same. The present invention relates to an axle load violating vehicle photographing apparatus for monitoring axle load violating vehicles.

[0002]

2. Description of the Related Art Conventionally, for example, on an expressway, for the purpose of preserving road structures, facilitating traffic and preventing danger, etc., the axle load of a vehicle passing on a toll gate is measured, and axle load violation vehicles are measured. , The front of the vehicle is photographed, and a warning and guidance are given based on the photographed data.

A photographing apparatus for photographing such an axle load violating vehicle is disclosed in, for example, Japanese Utility Model Publication Nos. 2-15199, 4-11818 and 4-11817. Imaging devices for offending vehicles are known.

[0004] Here, as a first conventional example, Japanese Utility Model 2-
An image capturing apparatus for an axle load violating vehicle as disclosed in Japanese Patent No. 15199 will be described with reference to FIGS. FIG. 12 is a diagram showing this photographing apparatus.
12A is a plan view thereof, and FIGS. 12B to 12D are side views showing a positional relationship of a vehicle in the photographing apparatus. FIG. 13 is a diagram showing a vehicle detector, and FIG.
12A is a view taken along the line AA in FIG. 12A, and FIG.
It is a BB arrow line view in 2 (a).

This conventional photographing apparatus includes a loading plate 4, a vehicle detector 5A, and a camera 6, and is installed at a tollgate entrance on an expressway. That is, in FIG. 12, 1 is an island, 2 is a booth, and 3 is a lane through which a vehicle passes. A loading plate 4 is disposed as an axle load detector for measuring the load.
A vehicle sensor 5A is provided near the booth 2 of the island 1 on the side of the loading plate 4 in the vehicle traveling direction (right side in FIG. 12). Considering that most of the axle load violating vehicles are not small vehicles but large vehicles, the vehicle detector 5A, as shown in FIG. (In the example, the position of 2m)
At the same time, emits a detection beam 5a crossing the lane 3 so as to maintain the same height, and outputs a sensing signal when the detection beam 5a is blocked. Therefore,
The vehicle sensor 5A detects a large vehicle that is a vehicle having a height equal to or higher than a predetermined height. In addition, another one in FIG.
The two vehicle sensors 5B are not provided in the conventional example, but are used in a second conventional example described later, and will be described in the description of the conventional example. Vehicle detector 5
On the island 1 at a position on the vehicle traveling direction side with respect to A, a camera 6 as a photographing device is near the photographing position, that is, the front surface of the vehicle 100 reaching the position of the detection beam 5a of the vehicle sensor 5A (photographing position). Are arranged in the direction of shooting.

[0006] In this conventional photographing apparatus, FIG.
As shown in (b), the vehicle 100 detected by the loading plate 4
When the axle load exceeds a preset axle load, the apparatus is set to a shooting standby state. In the shooting standby state, when the vehicle sensor 5A starts outputting a sensing signal, the camera 6 is operated to activate the vehicle sensor 5A. The front surface of the vehicle 100 reaching the position of the detection beam 5a (imaging position) is photographed. When the photographing is completed, the photographing standby state is released.

The camera 6 is located at a position where the front of the vehicle violating the axle load blocks the detection beam 5a of the vehicle detector 5A (photographing position).
Is set so that you can shoot optimally. Therefore, in the case of an axle load violating vehicle such as a heavy truck having a normal shape, the conventional photographing device is effective for the shape of the front of the axle load violating vehicle, the driver, and the image of the license plate of the vehicle. This results in an excellent photographing result.

Here, the vehicle detector 5A detects the detection beam 5a.
Is held at a predetermined height even when a small vehicle such as a passenger car enters between the axle load violating vehicle 100 and the vehicle sensor 5A as shown in FIG. 12 (c). ,
This is for appropriately photographing the front surface of the axle load violation vehicle 100 without causing erroneous detection.

That is, if the vehicle height of another vehicle (passenger car or the like) entering is less than the height of the detection beam 5a of the vehicle sensor 5A and is not erroneously detected by the vehicle sensor 5A,
It is possible to avoid that another vehicle is erroneously photographed. Then, only the following axle-violating vehicle 100 is properly detected, and the axle-violation vehicle 100 can be appropriately photographed.

Normally, most of the vehicles violating the axle load have the vehicle detector 5
The vehicle height is equal to or higher than the height of the detection beam 5a of the vehicle A, and the vehicle that violates the axle load, such as most large trucks,
An image is appropriately taken at the timing of sensing A.

As can be seen from the above description, in the first conventional example, the vehicle detector 5A is simply used as a photographing position detecting device for a large vehicle.

Next, as a second conventional example, Japanese Patent Publication No.
A photographing apparatus for an axle load violating vehicle as disclosed in Japanese Patent Publication No. 1818 will be described with reference to FIGS.

FIGS. 12 and 13 show the conventional photographing apparatus.
As shown in (b), another sensor 5B is added between the loading plate 4 and the vehicle sensor 5A in the above-described first conventional example of an axle load violating vehicle photographing apparatus. .

[0014] As shown in FIG.
The distance between B and the loading plate 4 in the vehicle traveling direction is set such that the preceding vehicle does not exist at the position of the vehicle sensor 5B when the offending axis of the axle-violating vehicle rides on the loading plate 4. The distance between the sensor 5B and the vehicle sensor 5A is less than the minimum size of a large vehicle. The vehicle detector 5B is shown in FIG.
As shown in (b), the detection beam 5a of the vehicle detector 5A
Predetermined height at lower position (1.6 m in this example)
A detection beam 5b that crosses the lane 3 from the position to the side of the island 1 diagonally downward, and outputs a sensing signal when the detection beam 5b is blocked. Therefore, the vehicle detector 5B detects the presence of the vehicle regardless of the shape of the vehicle.

In the first prior art example, when the vehicle violating the axle load is a long vehicle having a long vehicle length, the vehicle violates the axle on the loading plate 4 and enters a photographing standby state. Thus, the front of the axle-violating vehicle is beyond the position of the vehicle sensor 5A, and the vehicle is in a state in which the axle-violating vehicle outputs a sensing signal from the vehicle sensor 5B. Therefore, in the above-described first conventional example, the camera 6 is activated by the start of the output of the detection signal of the vehicle sensor 5A, so that the front of the large vehicle following the axle-violating vehicle is detected by the detection beam of the vehicle sensor 5A. When the shooting time reaches 5a, shooting is performed, resulting in erroneous shooting. Therefore, in the second conventional example, a vehicle detector 5B is added, and the vehicle detectors 5A, 5A,
By determining the state based on the sensing signal from the vehicle 5B, the vehicle is normally in a photographing standby state at the photographing position (the position where the detection beam 5a of the vehicle detector 5A is cut off). The photographing is performed when the output of the sensing signal of the sensor 5A is started, while in the above-described case, the photographing is performed not at the photographing position but at a predetermined timing as a forced process. As this forced processing, it is also possible to cancel all shooting standby states without performing shooting.

Also in the second conventional example, a vehicle sensor 5A is simply used as a photographing position detecting device for a large vehicle.

Next, as a third conventional example, Japanese Patent Publication No.
An image capturing apparatus for an axle load violating vehicle as disclosed in Japanese Patent No. 1817 will be described with reference to FIG. FIG.
It is a top view which shows the imaging device of this axle load violation vehicle.

In this conventional photographing apparatus, as shown in FIG. 14, another vehicle sensor 5C is added between the loading plate 4 and the vehicle sensor 5B in the second conventional example. Things. Similarly to the vehicle sensor 5B, the vehicle sensor 5C emits a detection beam 5c which crosses obliquely downward from a predetermined height at a position lower than the detection beam 5a of the vehicle sensor 5A, and the detection beam 5c is cut off. Output a sensing signal when In the example shown in FIG. 14, the distance between the loading plate 4 and the vehicle detector 5C in the vehicle traveling direction is 2 m, the distance between the vehicle detector 5C and the vehicle detector 5B in the vehicle traveling direction is 6 m, and the vehicle detector 5B and the vehicle The distance from the sensor 5A in the vehicle traveling direction is 6 m. The minimum size of a large vehicle is 6850 mm.

In the third conventional example, the vehicle detectors 5A,
By judging the state based on the sensing signals from 5B and 5C, a non-violating vehicle following a long vehicle with an axle load violation will not be photographed as a violating vehicle with the data of the preceding violating vehicle, When two vehicles having the minimum length enter continuously, it is possible to accurately photograph the following offending vehicle.

Also in the third conventional example, the photographing is normally performed when the output of the sensing signal of the vehicle sensor 5A is started, and as a photographing position detecting device for a large vehicle, the vehicle sensor 5A is simply used. It is only used.

[0021]

However, in each of the above-mentioned prior arts, the vehicle detector 5A is simply used as a photographing position detecting device for a large vehicle, and the output of the sensing signal of the vehicle detector 5A is started. When the truck, crane,
For large special vehicles such as cranes, projections above the front of the vehicle, such as the boom 101, are detected by the vehicle sensor 5A, and photographing is performed before the license plate or the driver reaches the optimal photographing position. Would. That is, FIG.
As shown in FIG. 2D, when the heavy special vehicle 100 violates the axle load, the pulley portion 102, the wire rope 103, and the like at the tip of the boom 101 of the heavy special vehicle 100 are detected by the vehicle sensor 5A. Thus, the photographing is performed at this detection timing. In the shooting at this timing, the shooting timing is early, and the shooting distance is long. Therefore, since the driver's seat and license plate appear small, it is difficult to identify the driver's face and license plate,
In addition, since photography is usually performed in synchronization with the strobe light day and night, there is a problem that the exposure of the film or the like becomes insufficient.

Therefore, in the conventional photographing apparatus for an axle load violating vehicle, the frontal region of a normal large truck or the like can be detected relatively easily, and the frontal region can be optimally photographed at a fixed position.・ For large special vehicles such as cranes and rafters / cranes, it is difficult to properly shoot the front of the head due to the projections above the front of the head.
It was not possible to obtain an effective photographing result for the driver image. At present, about 40% of vehicles that violate axle load are occupied by large special vehicles. Therefore, effective photographing results may not be obtained for license plates and driver images of vehicles that violate axle load. There were many.

The present invention has been made in view of the above circumstances, and is not limited to the case where the large vehicle is a normal large vehicle such as a large truck, but also the case where the large vehicle is a large special vehicle such as a truck crane or a rough terrain crane. Even if there is, regardless of the type of vehicle, it is possible to detect that a location suitable for shooting of the large vehicle has reached a predetermined shooting position, and it is possible to detect the image of the front of the vehicle, the driver, and the license plate. It is an object of the present invention to provide a photographing position detecting device for a large vehicle that can perform photographing for obtaining an effective photographing result.

Further, the present invention is applicable not only to the case where the axle load violating vehicle is a normal large vehicle such as a large truck but also to the case of a large special vehicle such as a truck crane and a rough terrain crane. Regardless of the purpose, an object of the present invention is to provide a photographing device for an axle load violating vehicle, which can obtain an effective photographing result for images of the front surface of the vehicle, a driver, and a license plate.

[0025]

According to a first aspect of the present invention, there is provided an apparatus for detecting a photographing position of a large vehicle, wherein the large vehicle passing through a predetermined passage reaches a predetermined photographing position. In a device for detecting a shooting position of a large vehicle, a first beam that traverses the passage at a high position where a large vehicle blocks and a small vehicle does not block is emitted, and when the first beam is blocked. A first sensor for outputting a first sensing signal, and a second beam traversing the passage at a position lower than the high position and lower than a protrusion above a frontal part of a large special vehicle, wherein the second beam crosses the passage. A second beam that is not spaced or is spaced closely in the vehicle traveling direction with respect to one beam and emits a second sensing signal when the second beam is blocked. A second detector for outputting, based on said first and second sensing signal, wherein the first and second
From the state in which both of the sensing signals are not output,
When the output of the first sensing signal is started, the output of the second sensing signal is started after the output of the first sensing signal is started, and the shooting position detection signal is output when the output of the second sensing signal is started. Signal output means for outputting the photographing position detection signal when the output of the first sensing signal is started during the output of the second sensing signal, when the output of the second sensing signal is started; It is provided with.

According to the first aspect, when the large special vehicle travels along the passage, the projection above the frontal head blocks the first beam, but does not block the second beam. The portion lower than the projection above the frontal head (the front end of which is the front surface of the main body of the large special vehicle) blocks the second beam but does not block the first beam. Therefore, since the first beam and the second beam are close to each other even if there is no gap in the vehicle traveling direction, when the large special vehicle travels along the passage, first, the front of the large special vehicle After the first beam is blocked by the protrusion above the head, the second beam is blocked by the front surface of the main body of the large special vehicle, and the output of the second sensing signal is started after the output of the first sensing signal starts. Will be started. Therefore, the first
In the aspect of the present invention, when the output of the second sensing signal is started after the output of the first sensing signal is started, the shooting position detection signal is output. It is possible to know that the front surface of the main body of the large special vehicle (that is, the portion close to the driver, the license plate, etc.) has reached a predetermined photographing position instead of the upper protrusion.

On the other hand, when an ordinary large vehicle having no protrusions above the frontal head advances along the passage, the first large vehicle has the first and second beams in an order determined by the unevenness of the front surface of the large vehicle and the positional relationship between the first and second beams. And the second beam is shut off. According to the first aspect, the output of the first sensing signal starts when the output of the second sensing signal starts after the output of the first sensing signal starts and during the output of the second sensing signal. When this is done, the photographing position detection signal is output, so that the front surface of a normal large vehicle (that is, a place close to the driver, license plate, etc.) has reached a predetermined photographing position by the photographing position detection signal. You can know.

Since the small vehicle does not block the first beam, the photographing position can be detected unless a special situation occurs in which the projection above the front of the large special vehicle overlaps in the vehicle traveling direction. Has no effect.

As described above, according to the first aspect, it is possible to detect that a portion suitable for photographing a large vehicle has reached a predetermined photographing position, regardless of the type of vehicle.
Therefore, if the photographing position detecting device according to the first aspect is used, it is possible to perform photographing for obtaining an effective photographing result for images of the front surface of the vehicle, the driver, and the license plate.

According to a second aspect of the present invention, there is provided a large vehicle photographing position detecting device for detecting that a large vehicle passing through a predetermined passage has reached a predetermined photographing position. A first crossing the aisle at a high position where the vehicle blocks and the small vehicle does not block
A first sensor that emits a first beam and outputs a first sensing signal when the first beam is shut off, and a projection lower than the high position and above a frontal part of a large special vehicle. A second beam traversing the passage at a lower position, the second beam being spaced apart in the vehicle traveling direction with respect to the first beam and located on the side of the vehicle traveling direction with respect to the first beam; A second sensor that emits a second beam that outputs a second sensing signal when the second beam is blocked, and based on the first and second sensing signals, When the output of the first sensing signal starts from a state in which both the first and second sensing signals are not output, after the output of the first sensing signal starts, the output of the second sensing signal becomes Outputs the shooting position detection signal when started And No. processing means, those provided with.

In the second embodiment, the second beam is the first beam.
Because there is an interval in the vehicle traveling direction with respect to the beam and it is located on the side in the vehicle traveling direction with respect to the first beam, a normal large vehicle with no protrusion above the frontal head Even when the vehicle travels along the path, the second beam is interrupted after the first beam is interrupted, so that the output of the second sensing signal is started after the output of the first sensing signal is started. Only when the photographing position detection signal is output, the second mode is substantially the same as the first mode.

According to a third aspect of the present invention, there is provided a large vehicle photographing position detecting apparatus for detecting that a large vehicle passing through a predetermined passage has reached a predetermined photographing position. A first crossing the aisle at a high position where the vehicle blocks and the small vehicle does not block
A first sensor that emits a first beam and outputs a first sensing signal when the first beam is shut off, and a projection lower than the high position and above a frontal part of a large special vehicle. A second beam traversing the passage at a lower position, the second beam being spaced apart in the vehicle traveling direction with respect to the first beam and located on the side of the vehicle traveling direction with respect to the first beam; A second sensor that emits a second beam that outputs a second sensing signal when the second beam is blocked, and based on the first and second sensing signals, When the output of the first sensing signal starts from a state in which both the first and second sensing signals are not output, after the output of the first sensing signal starts, the output of the second sensing signal becomes Outputs the shooting position detection signal when started In both cases, when the output of the second sensing signal is started from the state, when the output of the first sensing signal is started during the output of the second sensing signal, the second sensing is performed. And signal processing means for outputting the photographing position detection signal when the signal output is once terminated and restarted.

The positional relationship between the first and second beams in the third embodiment is the same as that in the second embodiment. In the first and second aspects, in a special situation in which a projection above the front of the large special vehicle overlaps with the small vehicle preceding the large special vehicle in the vehicle traveling direction, the large special vehicle The photographing position of the vehicle cannot be detected properly. On the other hand, in the third aspect, when the output of the first sensing signal starts first (instead of the special situation,
Shooting when the output of the second sensing signal is started after the output of the first sensing signal is started, when the projection above the front of the large special vehicle does not overlap with the preceding small vehicle) Outputting a position detection signal, and when the output of the second sensing signal is started from the state,
When the output of the first sensing signal is started during the output of the second sensing signal (corresponding to the special situation), the output of the second sensing signal is temporarily stopped and then restarted. In this case, a shooting position detection signal is output at the time of shooting, so that the shooting position can be appropriately detected even in the special case.

According to a fourth aspect of the present invention, there is provided the heavy-duty vehicle photographing position detecting apparatus according to the second or third aspect, wherein the second sensor is provided with the first sensor. It is arranged on the side in the vehicle traveling direction at a predetermined distance from the container in the vehicle traveling direction. This fourth
The embodiment is a specific example of realizing the positional relationship between the first beam and the second beam in the second and third embodiments.

According to a fifth aspect of the present invention, there is provided the heavy-duty vehicle shooting position detecting apparatus according to the second or third aspect, wherein the first and second sensors are substantially the same. The first and second beams are arranged such that the direction of the second beam mapped on the horizontal plane is inclined toward the vehicle traveling direction with respect to the direction of the first beam mapped on the horizontal plane. Are arranged. The fifth aspect is also a specific example of realizing the positional relationship between the first beam and the second beam in the second and third aspects.

According to a sixth aspect of the present invention, there is provided the heavy-duty vehicle shooting position detecting apparatus according to the second or third aspect, wherein the second sensor is provided with the first sensor. The first beam, which is arranged on the side in the vehicle traveling direction at a predetermined interval with respect to the vehicle in the vehicle traveling direction, and wherein the direction of the second beam mapped on the horizontal plane is mapped on the horizontal plane.
So that it leans toward the vehicle traveling direction with respect to the direction of the beam,
The first and second sensors are arranged. This sixth aspect is also the first aspect of the second and third aspects.
7 is a specific example of realizing the positional relationship between the first beam and the second beam.

According to a seventh aspect of the present invention, there is provided the heavy-duty vehicle photographing position detecting apparatus according to the fifth or sixth aspect, wherein the direction of the first beam mapped on a horizontal plane is changed. Are inclined in a horizontal plane in a direction opposite to the vehicle traveling direction with respect to a direction orthogonal to the vehicle traveling direction. In this case, the side of the left and right sides of the vehicle opposite to (ie, far from) the first sensor, which is the starting point of the first beam, blocks the first beam first. , Even if the angle difference between the directions of the first and second beams mapped on a horizontal plane is relatively small,
The distance between the position where the beam of the second beam is blocked by the vehicle and the position where the second beam is blocked by the vehicle can be relatively large,
preferable.

According to an eighth aspect of the present invention, there is provided the heavy-duty vehicle photographing position detecting apparatus according to any one of the first to seventh aspects, wherein the first beam has substantially the same height. The second beam traverses the passage diagonally downward from a predetermined height. The eighth embodiment is a specific example of the arrangement of the first beam in the height direction and the arrangement of the second beam in the height direction.

According to a ninth aspect of the present invention, there is provided the heavy-duty vehicle photographing position detecting apparatus according to any one of the first to eighth aspects, wherein the signal processing means comprises: And when the output of the second sensing signal ends, the output of the photographing position detection signal ends.

According to the ninth aspect, the photographing position detection signal starts to be output at the front of the main body of the large special vehicle excluding the protruding portion above the frontal head, and is output at the rear of the large special vehicle. That is, the output is started at the front of the normal large vehicle and the output is ended at the rear of the large vehicle. Therefore, the photographing position detection signal is a vehicle detection signal that targets only the main body of the large special vehicle excluding the protrusion above the frontal head and detects a normal large vehicle as it is. For this reason, for example, in the second conventional example and the third conventional example described above, the vehicle sensor 5A in FIG. 12 and the vehicle sensor 5A in FIG. 14 are replaced with the photographing position detecting device according to the eighth embodiment. This makes it possible to obtain an effective photographing result for images of the front of the vehicle, the driver, and the license plate in the case of the large special vehicle that has occurred in the second conventional example and the third conventional example. While eliminating the inconvenience of not being able to
The advantages of the second conventional example and the third conventional example can be obtained as they are.

According to a tenth aspect of the present invention, an axle load violating vehicle photographing apparatus includes: a large vehicle photographing position detecting apparatus according to any one of the first to ninth aspects; and the first and second sensors. On the side opposite to the vehicle traveling direction,
An axle load detector that detects an axle load of the vehicle passing through the passage; and an axle load violation detection when the detected axle load exceeds a preset axle load based on an output from the axle load detector. An axle load measuring device that outputs a signal, a photographing device that is provided on the side in the vehicle traveling direction with respect to the first and second sensors, and photographs around the photographing position, the axle load violation detection signal, Control means for controlling the photographing device so that the photographing device performs a photographing operation when the photographing position detection device starts outputting the photographing position detection signal under predetermined conditions based on the photographing position detection signal. And with.

The photographing apparatus for an axle load violating vehicle according to the tenth aspect differs from the conventional axle load violating vehicle photographing apparatus in that it does not use a mere vehicle sensor as a photographing position detecting device for a large vehicle. Since the heavy-duty vehicle photographing position detecting device according to any one of the first to ninth aspects is used, not only is the axle load violating vehicle a normal large vehicle such as a large truck, but also a truck, a crane, a rough terrain vehicle, and the like.
Even in the case of a large special vehicle such as a crane, an effective photographing result can be obtained with respect to images of the front of the vehicle, the driver, and the license plate regardless of the type of the vehicle.

The apparatus for detecting a photographing position of a large vehicle according to the present invention can be used not only in a photographing apparatus for an axle load violating vehicle but also in various photographing apparatuses for photographing a large vehicle.

[0044]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a photographing position detecting apparatus for a large vehicle according to the present invention;

First, a photographing position detecting apparatus for a large vehicle and a photographing apparatus for an axle-violating vehicle using the same according to the first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a block diagram showing a schematic configuration of a photographing apparatus for an axle load violating vehicle according to the present embodiment. FIG. 2 is a diagram showing a state in which the photographing device for an axle load violating vehicle according to the present embodiment is installed on a tollgate entrance of a highway.
(A) is a plan view thereof, and (b) of FIG.
FIG. 3 is a flowchart showing the operation of each part of the photographing apparatus for an axle load violating vehicle according to the present embodiment. FIG. 3 (a) is a flowchart showing the operation of the signal processing unit 13, and FIG. 3 (b) is the control unit 8. 6 is a flowchart showing the operation of the first embodiment. FIG. 4 is a side view showing a positional relationship of the vehicle in each state in the axle load violating vehicle imaging apparatus according to the present embodiment. FIG. 5 is a time chart showing the operation of the photographing device for an axle load violation vehicle according to the present embodiment, and corresponds to FIG.

It should be noted that the dimensions described in FIG. 2 are merely examples, and the present invention is not limited to these dimensions. The same applies to dimensions described in other drawings.

As shown in FIGS. 1 and 2, the apparatus for photographing an axle load violating vehicle according to the present embodiment includes a loading plate 4, an axle load measuring device 7, a photographing position detecting device 10A for a large vehicle, and a control device. It is provided with a unit 8 and a camera 6 and is installed at the tollgate entrance of the expressway. Further, the photographing position detecting device 10A
Is provided with vehicle sensors 11 and 12 and a signal processing unit 13.

In FIG. 2, reference numeral 1 denotes an island, 2 denotes a booth, and 3 denotes a lane through which the vehicle 100 passes. At a predetermined location in the lane 3 at the entrance of the island 1, a vehicle 100 passing through the lane 3 passes through a tire. A loading plate 4 is disposed as an axle load detector that measures the axle load. The axle load measuring device 7 shown in FIG. 1 is configured to output an axle load violation detection signal a when the detected axle load exceeds a preset axle load based on the output from the loading plate 4. ing.

As shown in FIG. 2, the vehicle detectors 11 and 12 are located on the side of the loading plate 4 in the vehicle traveling direction (right side in FIG. 2).
, Near the booth 2 of the island 1 at the same position in the vehicle traveling direction. The vehicle detector 11 is shown in FIG.
As shown in (b), a high position where a large vehicle shuts down and a small vehicle does not shut down (2.3 m in this example).
Emits a detection beam 11d crossing the lane 3 so as to maintain the same height at
Outputs the sensing signal SA when is shut off. Therefore, the vehicle sensor 11 detects a large vehicle that is a vehicle having a height equal to or higher than a predetermined height. On the other hand, as shown in FIG. 2B, the vehicle sensor 12 has a predetermined height at a position lower than the position of the detection beam 11d of the vehicle sensor 11 and lower than the protrusion above the frontal head of the large special vehicle. The detection beam 12d crosses the lane 3 from the position (1.7 m in this example) to the side of the island 1 diagonally downward, and outputs the sensing signal SB when the detection beam 12d is blocked. Therefore, the vehicle sensor 11 detects the presence of the vehicle regardless of the shape of the vehicle. In the present embodiment, the detection beam 12
d is not spaced from the detection beam 11d in the vehicle traveling direction.

In this embodiment, as shown in FIGS. 1 and 2, the vehicle sensor 11 includes a light emitting device 11a and a light receiving device 11a.
b, and the detection beam 11 emitted from the light emitter 11a
The infrared beam as d is reflected by the reflector 11c and received by the light receiver 11b. Similarly, the vehicle sensor 12 has a light emitter 12a and a light receiver 12b,
An infrared beam as a detection beam 12d emitted from the light emitter 12a is reflected by the reflector 12c and is received by the light receiver 12b.
, And is received. However, vehicle detector 1
1 and 12 may be so-called transmission types,
An ultrasonic type may be used.

The other vehicle detector 5B shown in FIG.
Is not provided in the present embodiment, but is used in another embodiment described later, and will be described in the description of the embodiment.

As shown in FIG. 2, the vehicle detectors 11 and 12
On the island 1 at a position on the vehicle traveling direction side with respect to
The camera 6 as a photographing device is located near the photographing position, that is, the detection beams 11 d and 12 d of the vehicle detectors 11 and 12.
Is arranged in the direction of photographing the front surface of the vehicle 100 that has reached the position (imaging position). The camera 6 is set so that the front of the axle load violating vehicle 100 can be optimally photographed at a position (photographing position) where the detection beams 11d and 12d of the vehicle sensors 11 and 12 are blocked. As the camera 6, a film-type camera or a so-called still camera may be used. Although not shown in the drawings, a light-emitting light source such as a flash which emits light in synchronization with the camera 6 is also provided as a part of the photographing device.

The signal processing unit 13 in FIG.
1 and the detection signal SB from the vehicle detector 12, when the output of the detection signal SA is started from a state where both of the detection signals SA and SB are not output, the detection signal SA is detected. When the output of the sensing signal SB is started after the start of the output, the imaging position detection signal b is output. When the output of the sensing signal SB is started from the above state, the output of the sensing signal SB is performed during the output of the sensing signal SB. To output the photographing position detection signal b when the output is started,
It is configured. Specifically, the signal processing unit 13 can be configured using a logic circuit, a CPU, or the like.

Here, a specific example of the operation of the signal processing unit 13 will be described with reference to the flowchart shown in FIG. In the following description, the sensing signals SA, S
B indicates an output state in a sensing state when “H”, and “L”.
In this case, the non-sensing state indicates the non-output state.

The signal processing unit 13 detects that the sensing signal SA is L and the sensing signal SB is L (that is, the detection beam 11
d and 12d are not interrupted), the operation is started.

When the signal processing section 13 starts operation, it first determines whether or not the sensing signal SA is H (detection beam 11d
Is determined (step S).
1). Since the sensing signal SA was L in the initial state, it is determined in step S1 whether the sensing signal SA has risen.
That is, it is determined whether or not the output of the sensing signal SA has started.

If it is determined in step S1 that the sensing signal SA is H, the signal processing unit 13 holds the signal SA '(step S2), and while the signal SA' is being held, the signal processing unit 13 outputs the sensing signal SB. It is determined whether it is H (whether or not the detection beam 12d is blocked) (step S3). Since the sensing signal SB was L in the initial state, step S3
Then, whether or not the sensing signal SB has risen, that is,
It is determined whether the output of the sensing signal SB has started. Then, if it is determined in step S3 that the sensing signal SB is not H, step S3 is repeated to detect the sensing signal SB.
Wait until B becomes H. If it is determined in step S3 that the sensing signal SB is H, the process proceeds to step S4.

On the other hand, if it is determined in step S1 that the sensing signal SA is not H, the signal processing unit 13 outputs the sensing signal SB.
Is H or not (step S5). If it is determined in step S5 that the sensing signal SB is not H, the process returns to step S1. On the other hand, in step S5, the sensing signal SB becomes H
Is determined, the signal processing unit 13 outputs the sensing signal S
It is determined whether or not A is H (step S6). If it is determined in step S6 that the sensing signal SA is not H, the process returns to step S5. On the other hand, in step S6, the sensing signal SA
Is determined to be H, the signal SA 'is held (step S7), and the process proceeds to step S4.

In step S4, the signal processing unit 13
Sets the shooting position detection signal b to “ON” (that is,
The output of the photographing position detection signal b is started). Thereafter, the signal processing unit 13 waits until the sensing signal SA is L and the sensing signal SB is L (that is, the detection beams 11d and 12d are not blocked) (Step S8).
In this state, the photographing position detection signal b is turned "OFF" (that is, the output of the photographing position detection signal b is terminated).
(Step S9), the holding of the signal SA 'is released (Step S10), and the process returns to Step S1.

The control unit 8 in FIG. 1 controls the signal processing unit under predetermined conditions based on the axle load violation detection signal a from the axle load measurement device 7 and the photographing position detection signal b from the signal processing unit 13. When the output of the imaging position detection signal b is started from 13, the imaging signal c is given to the camera 6 to cause the camera 6 to perform an imaging operation. Note that the control unit 8 and the signal processing unit 13
For example, they can be configured using the same CPU.

In the present embodiment, specifically, the control unit 8
Receives the photographing position detection signal b, sets the photographing standby state, and supplies the camera 6 with the photographing signal c when the signal processing unit 13 starts outputting the photographing position detection signal b in the photographing standby state.

A specific operation example of the control unit 8 is shown in FIG.
This will be described with reference to FIG. When starting the operation, the control unit 8 first waits until receiving the axle load violation detection signal a (step S21), and when receiving the axle load violation detection signal a, waits until receiving the photographing position detection signal b (step S22). Upon receiving the photographing position detection signal b, the photographing signal c is given to the camera 6 to perform a photographing operation (step S23), and step S23 is performed.
Return to 21.

Next, an operation example of the photographing device for an axle load violating vehicle according to the present embodiment according to the actual positional relationship of the vehicle will be described with reference to FIGS.

State 1 (large special vehicle 1) shown in FIG.
When the violating shaft of No. 00 is placed on the load plate 4), an axle load violation detection signal a is output, and the process passes through step 21 in FIG. 3B and repeats the determination of step S22, that is, photographing. It goes into a standby state. In this state 1, since the sensing signals SA and SB are L, steps S1 and S5 in FIG. 3A are repeated.

Next, in state 2 shown in FIG. 4B (the pulley portion 102 at the tip of the boom 101, which is a projection above the front of the large special vehicle 100, reaches the high detection beam 11d and blocks it. (State), the sensing signal SA becomes H, the signal SA ′ is held in step S2 via step S1 in FIG. 3A, and the determination in step S3 is repeated.

Next, in state 3 shown in FIG. 4C (the boom 101 and the like of the large special vehicle 100 do not block the high detection beam 11d, but the front of the main body of the large special vehicle 100 emits the low detection beam 12d. In this case, the sensing signal SB becomes H, and the steps S1 and S1 in FIG.
After S2 and S3, the shooting position detection signal b is set to O in step S4.
N, so that the determination in step S8 is repeated.
In this state 3, since the photographing position detection signal b is turned on, the photographing signal c is output in step S23 through step S22 in FIG. The area near the front is photographed. When the photographing is completed, the process returns to step S21 in FIG.

Thereafter, when a state 4 shown in FIG. 4D is reached (a state in which the large special vehicle 100 passes through the detection beams 11d and 12 and the detection beams 11d and 12d are not blocked), the sensing signals SA and SB are output. L, the photographing position detection signal b is turned off in step S9 in FIG. 3A, and the holding of the signal SA 'is released in step S10, and the process proceeds to step S10.
Return to 1.

On the other hand, when an ordinary large vehicle such as a large truck having no protrusions above the frontal head passes through the lane 3, the detection beams 11d are arranged in an order determined according to the uneven shape of the front surface of the large vehicle. , 12d are shut off. If the detection beam 11d is cut off first by the front of the large vehicle, the operation is exactly the same as in the case of the large special vehicle described above, and if the detection beam 12d is cut off first by the front of the large vehicle, FIG. Steps S1, S5, S6, S7, S
The operation is performed through steps S4, S8, S9, and S10. When the front surface of the large vehicle reaches the position of the detection beams 11d and 12d, a photographing operation is performed.

As described above, according to the present embodiment, a position suitable for photographing a large vehicle has reached a predetermined photographing position (the position of the detection beams 11d and 12d in the vehicle traveling direction) regardless of the type of vehicle. Is detected, and a photograph can be taken at a position where an effective photographing result can be obtained for the front of the vehicle, the license plate, and the image of the driver.

In the first embodiment described above, as described above, there is no space between the detection beam 11d and the detection beam 12d in the vehicle traveling direction. However, in the first embodiment, the detection beam 11
d and the detection beam 12d are brought close to each other, and the detection beam 11d
An interval may be provided between the detection beam 12d and the detection beam 12d in the vehicle traveling direction. In this case, any of the detection beams 11d and 12d may be on the side in the vehicle traveling direction.

Here, the detection beam 12d and the detection beam 11d are brought close to each other in the traveling direction of the vehicle so that the detection beam 12d
Three examples in which the detection beam 12d is arranged on the side in the vehicle traveling direction with respect to the detection beam 11d with an interval between the detection beam 11d and the detection beam 11d will be described with reference to FIGS. . 6 to 8,
Elements that are the same as or correspond to the elements in FIG. 2 are given the same reference numerals, and descriptions thereof are omitted.

FIG. 6 is a diagram showing another arrangement example of the vehicle sensors 11 and 12 of the photographing position detecting device 10A, and FIG.
6A is a plan view corresponding to FIG. 2A, and FIG.
It is the DD arrow view in (a). In this example, the directions of the detection beams 11d and 12d mapped onto the horizontal plane (that is, the detection beams 11d and 12d when viewed as shown in FIG.
Direction) remains substantially in the same direction, the vehicle sensor 11 and the vehicle sensor 12 are arranged at a predetermined interval in the vehicle traveling direction, and the vehicle sensor 12 is moved relative to the vehicle sensor 11 in the vehicle traveling direction. (Right side in FIG. 6A).

FIG. 7 is a diagram showing still another example of the arrangement of the vehicle sensors 11, 12 of the photographing position detecting device 10A.
(A) is a plan view corresponding to FIG. 2 (a), and FIG. 7 (b) is a view taken along the line EE in FIG. 7 (a). In this example, the vehicle sensors 11 and 12 are disposed at substantially the same position in the vehicle traveling direction (that is, the vehicle sensors 11 and 12 are disposed so that there is no space in the vehicle traveling direction between the vehicle sensors 11 and 12). 7), the vehicle detector 1 is tilted so that the direction of the detection beam 12d mapped on the horizontal plane is inclined toward the vehicle traveling direction (the right side in FIG. 7A) with respect to the direction of the detection beam 11d mapped on the horizontal plane.
1 and 12 are arranged. Then, the direction of the first beam mapped on the horizontal plane is inclined in a direction opposite to the vehicle traveling direction with respect to a direction (vertical direction in FIG. 7A) orthogonal to the vehicle traveling direction in the horizontal plane. ing.

FIG. 8 is a diagram showing still another example of the arrangement of the vehicle sensors 11, 12 of the photographing position detecting device 10A.
(A) is a plan view corresponding to FIG. 2 (a), and FIG. 8 (b) is a view on arrow FF in FIG. 8 (a). In this example, the vehicle sensor 11 and the vehicle sensor 12 are arranged at a predetermined interval in the vehicle traveling direction, and the vehicle sensor 12 is positioned on the side of the vehicle traveling direction with respect to the vehicle sensor 11 (FIG. 6A). (Right side in the middle). At the same time, the detection beam 12d mapped on the horizontal plane
The vehicle sensors 11 and 12 are arranged such that the direction of the vehicle is inclined toward the vehicle traveling direction (to the right in FIG. 8A) with respect to the direction of the detection beam 11d mapped on the horizontal plane. And
The direction of the first beam mapped on the horizontal plane is inclined to the side opposite to the vehicle traveling direction with respect to the direction (vertical direction in FIG. 8A) orthogonal to the vehicle traveling direction in the horizontal plane. .

As shown in FIGS. 6, 7 and 8, when the vehicle sensors 11 and 12 are arranged, not only a large special vehicle but also a normal large vehicle having no protrusion above the frontal head. Even in the case of (1), the detection beam 11d is always interrupted first by the heavy vehicle, and thereafter, the detection beam 12d is interrupted.

Therefore, in the first embodiment, the vehicle sensors 11, 1 shown in FIGS. 6, 7, and 8 are used.
When changing to adopt the arrangement of FIG.
The operation of the signal processing unit 13 shown in (a) may be changed as follows. That is, in FIG. 3A, steps S5, S6, and S7 are removed, and in step S1, N
If it is determined to be O, the process may return to step S1 again.

By the way, in the first embodiment described above, the photographing position detecting device 10A is arranged such that the projection above the frontal head of the large special vehicle moves in the vehicle traveling direction relative to the small vehicle preceding the large special vehicle. In a special situation that overlaps with, the photographing position of the large special vehicle cannot be properly detected. For example, in the state 2 shown in FIG.
In a special situation in which the second detection beam 12a is blocked, the photographing position detection signal b starts to be output at that point, and the photographing is performed at that point, resulting in erroneous photographing.

Next, a photographing position detecting apparatus for a large vehicle and a photographing apparatus for an axle load violating vehicle using the same according to a second embodiment of the present invention which can solve such inconveniences will be described. This will be described with reference to FIGS.
This embodiment is a modification of the first embodiment. Therefore, in the description of the present embodiment, the first embodiment will be described.
The description overlapping with that of the embodiment is omitted.

FIG. 9 is a flowchart showing the operation of the signal processing unit 13 in the photographing apparatus for an axle load violating vehicle according to the present embodiment. FIG. 10 is a side view showing the positional relationship of the vehicle in each state in the axle load violating vehicle imaging apparatus according to the present embodiment. FIG. 11 is a time chart showing the operation of the photographing device of the axle load violating vehicle according to the present embodiment,
This corresponds to FIG.

This embodiment is a modification of the first embodiment as follows. That is, the present embodiment is different from the first embodiment in that the vehicle sensor 1
The arrangement of 1 and 12 is changed to the arrangement shown in any of FIGS. 6 to 8 described above, and the operation of the signal processing unit 13 is changed.

In the present embodiment, the signal processing unit 13 does not output both the sensing signals SA and SB based on the sensing signal SA from the vehicle sensor 11 and the sensing signal SB from the vehicle sensor 12. When the output of the sensing signal SA is started from the state, the photographing position detection signal b is output when the output of the sensing signal SB is started after the output of the sensing signal SA is started, and the output of the sensing signal SB is performed from the state. Is started, the output of the sensing signal SA is started during the output of the sensing signal SB, and the shooting position detection signal b is output when the output of the sensing signal SB is once stopped and restarted. It is configured to Specifically, the signal processing unit 13 can be configured using a logic circuit, a CPU, or the like.

Here, a specific example of the operation of the signal processing unit 13 will be described with reference to a flowchart shown in FIG. In the following description, the sensing signal S
A and SB indicate an output state in a sensing state when "H", and indicate a non-output state in a non-sensing state when "L".

The signal processing unit 13 detects that the sensing signal SA is L and the sensing signal SB is L (that is, the detection beam 11
d and 12d are not interrupted), the operation is started.

When the signal processing section 13 starts the operation, it first determines whether or not the sensing signal SB is at H (detection beam 12d
Is determined (step S3).
1). Since the sensing signal SA is L in the initial state, it is determined in step S31 whether the sensing signal SB has risen, that is, whether the output of the sensing signal SB has started.

If it is determined in step S31 that the sensing signal SB is not H, the signal processing unit 13 sets the sensing signal SA to H
Is determined (whether or not the detection beam 11d is blocked) (step S32). Since the sensing signal SA was L in the initial state, it is determined in step S32 whether the sensing signal SA has risen, that is, the sensing signal S
It is determined whether or not the output of A has started.

If it is determined in step S32 that the sensing signal SA is H, the signal processing unit 13 holds the signal SA '(step S2), and then determines whether or not the sensing signal SB is H (detection). It is determined whether or not the beam 12d is blocked (step S34). Then, step S34
If it is determined that the sensing signal SB is not H at step S
34 is repeated until the sensing signal SB becomes H. If it is determined in step S34 that the sensing signal SB is H, steps S4, S8, S9, S10 in FIG.
After the same steps S35 to S38, the process returns to step S31.

If it is determined in step S31 that the sensing signal SB is at H, the signal processing unit 13 sets the sensing signal SA to H
Is determined (whether or not the detection beam 11d is blocked) (step S39). If it is determined in step S39 that the sensing signal SA is H, the signal processing unit 1
3 holds the signal SA ″ (step S40), and determines whether or not the sensing signal SB is L (whether or not the detection beam 12d is not blocked) (step S41). Since the signal SB was H, in a step S41, it is determined whether or not the sensing signal SB has risen.
That is, it is determined whether or not the output of the sensing signal SB has been completed. Then, in step S41, the sensing signal S
If it is determined that B is not L, step S41 is repeated until the sensing signal SB becomes L. Step S41
When it is determined that the sensing signal SB is L, the signal SA "
Is released and the signal SA 'is held (step S42), and the step S34 and FIG.
Through the same steps S35 to S38 as steps S4, S8, S9, and S10 in the middle, the process returns to step S31.

If it is determined in step S32 that the sensing signal SA is not H, the signal processing unit 13 sets the sensing signal SB to H
Is determined (whether or not the detection beam 12d is blocked) (step S43), and H is determined in step S43.
If not, the process returns to step S32, while if it is determined to be H in step S43, the process proceeds to step S39.

If it is determined in step S39 that the sensing signal SA is not H, the signal processing unit 13 sets the sensing signal SB to L
Is determined (whether or not the detection beam 12d is not blocked) (step S44). If L is determined to be L in step S44, the process returns to step S32, while it is determined to be not L in step S44. Then, step S39 is performed.
Move to

Next, an example of the operation of the photographing device for an axle load violating vehicle according to the present embodiment according to the actual positional relationship of the vehicle will be described with reference to FIGS.

State 1 shown in FIG. 10A (the state in which the offending shaft of the large special vehicle 100 is mounted on the loading plate 4 and the passenger car (small vehicle) 1 preceding the large special vehicle 100
00 ′, the lower detection beam 12d is cut off), an axle load violation detection signal a is output, and FIG.
The state passes through step S21 in (b) and repeats the determination of step S22, that is, a photographing standby state. In this state 1, since the sensing signal SA is L and the sensing signal SB is H, the determination in steps S39 and S44 in FIG. 9 is repeated.

Next, a state 2 shown in FIG. 10B (a boom 101 which is a projection above the front head of the large special vehicle 100)
The pulley portion 102 at the front end of the large special vehicle 10 overlaps the rear portion of the preceding passenger car 100 'in the vehicle traveling direction.
0, the pulley portion 102 at the tip of the boom 101 reaches the high detection beam 11d and shuts it off.
When the lower detection beam 12d is shut off), the sensing signal SA becomes H while the sensing signal SB remains H, and the signal SA ″ is held in step S40 through step S39 in FIG. 9 and in step S41. It becomes a state where the judgment is repeated.

Next, in state 3 shown in FIG. 10 (c) (the pulley portion 102 and the wire rope 103 at the tip of the boom 101 of the large special vehicle 100 do not block the high detection beam 11d, Does not reach the low detection beam 12d and the front passenger car 10
0 'passes through the detection beam 12d and the detection beam 12d
Are not interrupted), the sensing signals SA, S
B becomes L, the signal SA ″ is released from holding in step S42 through step S41 in FIG.
A ′ is held, and the state of step S34 is repeated.

Next, in state 4 shown in FIG. 10 (d) (the pulley portion 102 and the wire rope 103 at the tip of the boom 101 of the large special vehicle 100 do not block the high detection beam 11d and the large special vehicle 100 (The state in which the front surface of the main body reaches the low detection beam 12d and blocks it), the sensing signal SB becomes H, the shooting position detection signal b is turned on in step S35 through step S34, and the determination in step S36 is made. Is repeated. Then, in this state 4, since the photographing position detection signal b is turned ON, the process proceeds to step S23 through step 22 in FIG.
, A photographing signal c is output, and the camera 6 photographs the vicinity of the front of the main body of the large special vehicle 100. When the photographing is completed, the process returns to step S21 in FIG.

Thereafter, when a state 5 shown in FIG. 10E is reached (a state in which the large special vehicle 100 passes the detection beams 11d and 12 and the detection beams 11d and 12d are not blocked), the sensing signals SA and SB are output. L, the photographing position detection signal b is turned off in step S37 in FIG. 9, the holding of the signal SA 'is released in step S38, and the process proceeds to step S3.
Return to 1.

On the other hand, in a normal situation in which the pulley portion 102 at the tip of the boom 101, which is a projection above the front of the large special vehicle 100, does not overlap the preceding passenger car 100 'in the vehicle traveling direction, the large special vehicle 100 When the vehicle 100 passes through the lane 3, after performing the operations of steps S34 to S38 through steps S32 and S33 in FIG.
It will return to 1. This operation is the same as the operation described with reference to FIGS. 4 and 5 in the first embodiment.

When a normal large vehicle, such as a large truck, having no protrusions above the front of the head passes through the lane 3, the detection beam 11d is cut off and then 12d is cut off. When the detection beam 12d is cut off, the operation is sequentially performed through steps S31 to S38 in FIG. 9, and the photographing operation is performed when the front surface of the large vehicle reaches the position of the detection beam 12d.

As described above, according to the present embodiment, a position suitable for photographing a large vehicle is determined at a predetermined photographing position (the position of the detection beam 12d in the vehicle traveling direction) regardless of the type of vehicle.
Is reached, and the photographing can be performed at a position where an effective photographing result can be obtained for the front of the vehicle, the license plate, and the image of the driver.

According to the present embodiment, even in a special situation where the projection above the frontal part of the large special vehicle overlaps with the small vehicle preceding the large special vehicle in the vehicle traveling direction, Appropriate photographing can be performed by appropriately detecting the photographing position of the large special vehicle, and erroneous photographing can be prevented.

Next, a modification of the first and second embodiments will be described.

The first and second embodiments described above correspond to the vehicle sensor 5B shown in FIGS. 2, 6, 7 and 8 (the vehicle sensor 5B is a vehicle sensor shown in FIGS. 12 and 13). (Corresponding to the vessel 5B). However, in the axle load violating vehicle photographing apparatus according to the present invention, the vehicle sensor 5B is added, and the control unit 8 controls the axle load violation detection signal a from the axle load measurement device 7 and the signal processing unit 13
Not only the photographing position detection signal b from the camera but also the vehicle detector 5B
A predetermined photographing condition is determined on the basis of the sensing signal from the camera 6, and when the output of the photographing position detection signal b from the signal processing unit 13 is started under the photographing condition, the photographing signal c is transmitted to the camera 6.
To cause the camera 6 to perform a shooting operation.

Thus, for example, in the second conventional example described above, it is possible to obtain an axle load violating vehicle photographing apparatus in which the vehicle detector 5A in FIG. 12 is replaced by the photographing position detecting apparatus 10A described above. In this case, while eliminating the inconvenience that an effective photographing result cannot be obtained for the image of the front of the vehicle, the driver, and the license plate in the case of the large special vehicle, which has occurred in the second conventional example, The advantages of the second conventional example described above can be obtained as they are.

Similarly, in the above-described first and second embodiments, not only the vehicle sensor 5B but also a sensor corresponding to the vehicle sensor 5C in FIG. 14 is added.
Predetermined photographing conditions are determined based on not only the axle load violation detection signal a from the axle load measuring device 7 and the photographing position detection signal b from the signal processing unit 13 but also the sensing signals from the vehicle sensors 5B and 5C. When the signal processing unit 13 starts outputting the photographing position detection signal b under the photographing conditions, the photographing signal c
May be given to the camera 6 to cause the camera 6 to perform a shooting operation.

Thus, for example, in the third prior art example described above, it is possible to obtain a photographing apparatus for an axle load violating vehicle in which the vehicle detector 5A in FIG. 14 is replaced by the photographing position detecting apparatus 10A described above. In this case, while eliminating the inconvenience that an effective photographing result cannot be obtained for the images of the front surface of the vehicle, the driver, and the license plate in the case of the large special vehicle that has occurred in the third conventional example, The advantages of the third conventional example described above can be obtained as they are.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. For example, the apparatus for detecting a photographing position of a large vehicle according to the present invention can be used not only in a photographing apparatus for an axle load violating vehicle but also in various photographing apparatuses for photographing a large vehicle.

[0107]

As described above, according to the apparatus for detecting a photographing position of a large vehicle according to the present invention, not only a case where the large vehicle is a normal large vehicle such as a large truck but also a truck crane, a rough terrain crane, etc. Even if it is a large special vehicle, regardless of the type of vehicle, it is possible to detect that a location suitable for shooting of the large vehicle has reached a predetermined shooting position, It is possible to perform photographing to obtain an effective photographing result for the image of the person and the license plate.

Further, according to the apparatus for photographing an axle load violating vehicle according to the present invention, not only when the axle load violating vehicle is a normal large vehicle such as a large truck but also a large special vehicle such as a truck crane and a rough terrain crane. Even in the case of irrespective of the type of vehicle, an effective photographing result can be obtained with respect to the image of the front of the vehicle, the driver, and the license plate. Therefore, the photographing performance of the axle-violating vehicle is significantly improved, and the warning and guidance of the axle-violating vehicle can be enhanced.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a schematic configuration of an imaging device for an axle load violation vehicle according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a state in which the photographing device for an axle load violation vehicle according to the first embodiment of the present invention is installed on a tollgate entrance of an expressway, and FIG. 2 (a) is a plan view thereof. FIG. 2 (b) is a view on arrow CC in FIG. 2 (a).

FIG. 3 is a flowchart showing an operation of each unit of the photographing device for the vehicle with an axle load violation according to the first embodiment of the present invention;
FIG. 3A is a flowchart showing the operation of the signal processing unit,
FIG. 3B is a flowchart showing the operation of the control unit.

FIG. 4 is a side view showing a positional relationship of the vehicle in each state in the axle load violating vehicle photographing apparatus according to the first embodiment of the present invention.

FIG. 5 is a time chart illustrating the operation of the photographing device for the vehicle with an axle load violation according to the first embodiment of the present invention.

6A and 6B are diagrams showing an example of the arrangement of two vehicle sensors of the photographing position detecting device. FIG. 6A is a plan view corresponding to FIG. 2A, and FIG. FIG.

7A and 7B are diagrams showing another example of the arrangement of two vehicle sensors of the photographing position detecting device, wherein FIG. 7A is a plan view corresponding to FIG. 2A and FIG. 7B is FIG. It is an EE arrow view in (a).

8A and 8B are diagrams showing still another example of the arrangement of two vehicle sensors of the photographing position detecting device. FIG. 8A is a plan view corresponding to FIG. 2A, and FIG. It is an FF arrow line view in 8 (a).

FIG. 9 is a flowchart illustrating an operation of a signal processing unit in the photographing device for an axle load violating vehicle according to the second embodiment of the present invention.

FIG. 10 is a side view showing a positional relationship between vehicles in various states in the axle load violating vehicle photographing apparatus according to the second embodiment of the present invention.

FIG. 11 is a time chart showing the operation of the photographing device for an axle load violation vehicle according to the second embodiment of the present invention.

FIG. 12 is a view showing a first and second conventional example of a photographing apparatus of an axle load violating vehicle, and FIG. 12 (a) is a plan view thereof and FIG.
2 (b) to 2 (d) are side views showing the positional relationship of the vehicle in the imaging device.

FIG. 13 is a view showing a vehicle sensor in the first and second conventional examples, and FIG. 13 (a) is a view AA in FIG. 12 (a).
FIG. 13B is a view taken in the direction of the arrow BB in FIG. 12A.

FIG. 14 is a plan view showing a third conventional example of an imaging device for an axle load violating vehicle.

FIG. 15 is a diagram showing an example of a large special vehicle, and FIG.
15A is a side view of a truck crane, and FIG. 15B is a side view of a rafter crane.

[Description of sign]

 REFERENCE SIGNS LIST 1 island 2 booth 3 lane 4 loading plate 6 camera 7 axle load measuring device 8 control unit 10A photographing position detecting device 11, 12 vehicle sensor 11a, 12a light emitter 11b, 12b light receiver 11c, 12c reflector 11d, 12d detection beam 13 signal processing unit 100 vehicle SA, SB sensing signal a axle load violation detection signal b shooting position detection signal c shooting signal

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-64-80835 (JP, A) JP-A-64-80834 (JP, A) JP-A-52-119347 (JP, A) 277198 (JP, A) JP-A-51-77354 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01G 19/02 G08G 1/015

Claims (10)

(57) [Claims] 1. A photographing position detection device for a large vehicle that detects that a large vehicle passing through a predetermined passage has reached a predetermined photographing position, wherein the large vehicle is shut off and the passage is located at a high position where the small vehicle is not interrupted. A first sensor that emits a first beam across the vehicle and outputs a first sensing signal when the first beam is blocked; and a forehead of a large special vehicle that is lower than the high position. A second beam traversing the passage at a position lower than the upper protrusion, wherein the second beam is not spaced or is spaced close to the first beam in the vehicle traveling direction.
A second sensor that emits a second beam and outputs a second sensing signal when the second beam is blocked; and a first sensor based on the first and second sensing signals. When the output of the first sensing signal is started from a state where both of the second sensing signals are not output, the output of the second sensing signal is started after the output of the first sensing signal is started. Output the shooting position detection signal when
When the output of the second sensing signal is started from the state, the shooting position detection signal is output when the output of the first sensing signal is started during the output of the second sensing signal. A photographing position detecting device for a large vehicle, comprising: signal processing means. 2. A photographing position detecting device for a large vehicle that detects that a large vehicle passing through a predetermined passage has reached a predetermined photographing position, wherein the large vehicle is shut off and the passage is located at a high position where the small vehicle is not interrupted. A first sensor that emits a first beam across the vehicle and outputs a first sensing signal when the first beam is blocked; and a forehead of a large special vehicle that is lower than the high position. A second beam traversing the passage at a position lower than the upper protrusion, wherein the second beam is adjacent to the first beam at an interval in a vehicle traveling direction and is in a vehicle traveling direction relative to the first beam; Emits a second beam located on the side of
A second sensor that outputs a second sensing signal when the second beam is blocked; and a second sensor that outputs the first and second sensing signals based on the first and second sensing signals. When the output of the first sensing signal starts from a state where both are not output, a shooting position detection signal when the output of the second sensing signal starts after the output of the first sensing signal starts And a signal processing means for outputting a signal. 3. A photographing position detecting device for a large vehicle that detects that a large vehicle passing through a predetermined passage has reached a predetermined photographing position, wherein the large vehicle is shut off and the passage is located at a high position where the small vehicle is not interrupted. A first sensor that emits a first beam across the vehicle and outputs a first sensing signal when the first beam is blocked; and a forehead of a large special vehicle that is lower than the high position. A second beam traversing the passage at a position lower than the upper protrusion, wherein the second beam is adjacent to the first beam at an interval in a vehicle traveling direction and is in a vehicle traveling direction relative to the first beam; Emits a second beam located on the side of
A second sensor that outputs a second sensing signal when the second beam is blocked; and a second sensor that outputs the first and second sensing signals based on the first and second sensing signals. When the output of the first sensing signal starts from a state where both are not output, a shooting position detection signal when the output of the second sensing signal starts after the output of the first sensing signal starts And when the output of the second sensing signal is started from the state, and when the output of the first sensing signal is started during the output of the second sensing signal, 2. A photographing position detecting device for a large vehicle, comprising: signal processing means for outputting the photographing position detection signal when the output of the sensing signal of (2) is once terminated and restarted. 4. The vehicle according to claim 2, wherein the second sensor is arranged at a predetermined distance in the vehicle traveling direction from the first sensor in the vehicle traveling direction. Detecting device for large vehicles. 5. The apparatus according to claim 1, wherein the first and second sensors are arranged at substantially the same position in the traveling direction of the vehicle, and the second and second sensors are mapped on a horizontal plane.
The first and second sensors are arranged so that the direction of the first beam is inclined toward the vehicle traveling direction with respect to the direction of the first beam mapped on a horizontal plane.
Or a photographing position detecting device for a large vehicle according to 3. 6. The second beam mapped on a horizontal plane, wherein the second sensor is disposed on the side in the vehicle traveling direction at a predetermined distance from the first sensor in the vehicle traveling direction. The first and second beams so that the direction of the first beam is inclined toward the vehicle traveling direction with respect to the direction of the first beam mapped on the horizontal plane.
4. The sensor according to claim 2, wherein the sensor is disposed.
The photographing position detecting device for a large vehicle according to the above. 7. The vehicle according to claim 5, wherein the direction of the first beam mapped on the horizontal plane is inclined in the horizontal plane in a direction opposite to the vehicle traveling direction with respect to a direction orthogonal to the vehicle traveling direction. 7. A photographing position detecting device for a large vehicle according to 6. 8. The system of claim 1, wherein the first beam traverses the passage so as to maintain substantially the same height, and the second beam traverses the passage obliquely downward from a predetermined height. 8. The photographing position detecting device for a large vehicle according to any one of 1 to 7. 9. The signal processing means according to claim 1, wherein said first and second signal processing means include:
The photographing position detecting device for a large vehicle according to any one of claims 1 to 8, wherein the output of the photographing position detecting signal is terminated when both of the output of the sensing signals are terminated. 10. The photographing position detecting device for a large vehicle according to claim 1, wherein the detecting position is provided on a side opposite to a vehicle traveling direction with respect to the first and second sensors. An axle load detector that detects an axle load of a vehicle passing through a passage; and an axle load violation detection signal when the detected axle load exceeds a preset axle load based on an output from the axle load detector. An axle load measuring device that outputs the axle load detection signal and the axle load violation detection signal that is provided on the side in the vehicle traveling direction with respect to the first and second sensors and that captures the vicinity of the imaging position. Control means for controlling the photographing device so that the photographing device performs a photographing operation when output of the photographing position detection signal is started from the photographing position detection device under predetermined conditions based on the position detection signal; An axle load violating vehicle, comprising: Imaging apparatus.