JPH0215199Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is used in an automatic photographing device for vehicles with an axle load violation used at expressway toll gates. To obtain effective photographic results regarding the front shape of the vehicle, the image of the driver, and the license plate, which require evidence for interpretation, warning, etc. from the photographed results, in particular regarding a photographing device for photographing a vehicle with an axle load violation. The present invention relates to a photographing device for a vehicle with an axle load violation.

Generally, when photographing a vehicle with an axle load violation (vehicle with a load violation) used at an expressway toll gate, the distance between the front of the violator's head and the camera is constant due to the length of the vehicle and the position of the vehicle's axle. In addition, due to differences in the speed at which vehicles approach the tollgate, the violating vehicle on the photographed film screen may be photographed in various sizes, parts of it may protrude from the screen, or it may be outside the depth of focus of the lens. This results in an out-of-focus shot. Also, if the distance between the vehicle in front and the vehicle in front is short, the rear of the vehicle in front may overlap and the photograph will be taken.
Sometimes the intended purpose cannot be achieved.

On the other hand, in conventional devices of this type, a timer is used to delay the time from the detection of a violating vehicle to the camera's shutter operation, and the shutter is not turned off until the violating vehicle is in a position suitable for taking a photo. In this way, a method of taking photographs that does not cause any practical problems is adopted. However, such methods require an artificial operation method that is set according to the speed of the vehicle, so it is said that an extremely large amount of effort and time must be expended when photographing a large number of vehicles violating the axle load. There are drawbacks.

In view of the above points, the present invention was developed to solve such problems and eliminate such drawbacks.The purpose of this invention is to use a fully automated system to capture images of vehicles that violate axle load violations, and which require evidence. To provide a photographing device for a vehicle with an axle load violation, which allows more effective photographing.

In order to achieve this purpose, the present invention
A detector for a vehicle violating an axle load, a camera for photographing the violating vehicle, and a light emitting device for illumination are installed, and a vehicle sensor is installed between the detector and the camera, and the detector detects the violating vehicle. Through a combination of vehicle detection by vehicle detectors, when the distance between the front head of the violating vehicle and the camera is always constant, the camera shutter is activated to take a picture.The following is based on the drawing. Examples of the present invention will be described in detail.

The figure is a block diagram showing an embodiment of the photographing device for a vehicle with an axle load violation according to the present invention, and only the parts necessary for explanation are shown. In the figure, 1 is the vehicle that is the subject;
Reference numeral 2 denotes a detector for detecting the axle load of the vehicle 1. The detector 2 is, for example, a sensor buried underground in a road on which the vehicle 1 travels in the direction of the arrow, and measures the loaded weight of the vehicle 1. 3 is an axle load measuring device which inputs the detection output from detector 2, compares it with a preset axle load, and sends an axle load excess signal a when the axle load exceeds the set axle load. is configured to do so. 4 is a vehicle sensor having, for example, a light emitter 4a and a light receiver 4b, and the light beam emitted from the light emitter 4a is reflected by a reflector 5.
It is configured to return to the light receiver 4b. In addition,
Although the case where a light beam type vehicle sensor 4 is used as an example is described here, it goes without saying that a sensor other than a light beam type sensor, such as an ultrasonic type sensor, can also be used.

6 sends a photographing signal c to and controls a photographing device 7 which includes a camera with a shutter for recording images of the vehicle and the driver, and a light emitting light source (not shown) for illumination that radiates toward the vehicle. In the control device of the photographing device 7, while receiving the axle load excess signal a from the axle load measuring device 3, the vehicle sensor 4
It has a function of transmitting a photographing signal c to the photographing device 7 when the vehicle sensing signal b is also received.
That is, it constitutes a photographing control means which receives the axle load excess signal a and the vehicle sensing signal b as inputs and controls the photographing device 7 by the logical product of the two, that is, the photographing signal c which is a coincident output.

Next, the operation of the embodiment shown in this figure will be explained.
First, when the vehicle 1 passes through a location where the detector 2 for detecting the axle load is buried, the axle load of each axle of the vehicle (in the case of a two-axle vehicle, the front axle and the rear axle) is measured. When an axle load exceeding the set axle load, for example 10 tons, is detected on any one of the axles, the axle load measuring device 3 sends an axle load excess signal a to the control device 6. This control device 6 is
Even if the axle load excess signal a is received, the vehicle sensing signal b has not yet arrived, so the system waits in a standby state.

Next, when the vehicle 1 advances to the position of the vehicle 1', the light beam of the vehicle sensor 4 is blocked, so the vehicle sensor 4 detects the vehicle 1' and sends a vehicle detection signal b to the control device 6. . And this control device 6
As described above, upon receiving the vehicle sensing signal b in the standby state, the camera sends the photographing signal c to the photographing device 7, and the photographing device 7 photographs the vehicle 1' at this point.

Note that when a vehicle whose axle load is less than the set axle load passes, even if the vehicle sensor 4 detects the vehicle, the control device 6 is not in the standby state where the axle load excess signal a as described above has arrived, so it cannot be photographed. is not carried out.

As is clear from the above explanation, according to the present invention, there is no need to rely on conventional manual operation means, so not only can all the inconveniences caused by this be solved, but also it is possible to It is possible to automatically obtain effective photographic results for images of the front shape, driver, and license plate of a vehicle with an axle load violation that requires evidence such as interpretation and warnings. Even if there are differences in the speed of pod advancement, it is possible to take pictures at the same point, and more effective photographic results can be automatically obtained, so the practical effects are extremely large.

[Brief explanation of the drawing]

The figure is a block diagram showing an embodiment of the photographing device for a vehicle with an axle load violation according to the present invention. 1, 1′...Vehicle, 2...Detector, 3...Axle load measuring device, 4...Vehicle sensor, 6...Control device,
7...Photography equipment.

Claims (1)

[Scope of Claim for Utility Model Registration] A device for photographing a vehicle with an axle load violation used at an expressway toll gate, comprising: a detector 2 installed on the expressway for detecting the axle load of a vehicle; an axle load measuring device 3 which compares the output value with a preset axle load and sends an axle load excess signal a when an axle load exceeding the set axle load is detected; A vehicle sensor 4 is provided and outputs a vehicle detection signal b when detecting a vehicle, and a vehicle sensor 4 receives a vehicle detection signal b from the vehicle sensor 4 while receiving an axle load excess signal a from the axle load measuring device 3. It has a built-in control device 6 that sends out a photographing signal c when the vehicle is detected, a camera with a shutter, and a light emitting light source that emits synchrotron radiation toward the vehicle. A photographing device for a vehicle with an axle load violation, comprising: a photographing device 7 which is set to photograph the head and whose shutter operates when a photographing signal c is supplied from a control device 6.