FR2832533A1 - Automatic traffic light control to prevent passage through red light has digital camera to record vehicles passing through light - Google Patents

Abstract

The automatic traffic light control to prevent passing through a red light has a housing with a digital camera and an image processor. The processor receives data via a control screen which allows localization and defining of state of a red light. The processor receives data for vehicle infractions of the red light, it memorizes the image and encrypts them for transmission to a communication center.

Description

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 The present invention relates to an automatic vehicle control device which makes it possible to detect infringements of crossing red lights and closed level crossings, it can also detect infringements of speed.

 There are devices to automatically control red light crossings and level crossings, but these are complex devices that require the use of several independent sub-assemblies, and the performance of major civil works and wiring. In addition, the detection of red light crossing, level crossing or speeding violations are handled by different devices, and most of the time, site specific.

 The device according to the invention is composed of a single electronic unit which makes it possible to independently process the detections of crossing of fire and level crossing, and which by the simple addition of a radar also makes it possible to detect the speeding offenses.

 This box is mainly composed of a digital shooting module associated with a digital processor intended to analyze the photos, to decide on the occurrence of infringement, to process and transmit the photos as well as the information attesting to the 'offense.

 This box has three main functions: - detection of crossings - proof of the offense by memorizing the photograph in digital form - transmission of the photograph in a secure form to an authorized body, for the purpose of verbalization.

 Crossing detection is carried out by analyzing the image of the area to be monitored. This analysis consists in: - observing and establishing the state of the prohibition signal (Ex: observation of the presence of a red light, observation of the descent of a barrier). This observation is made by the system, but an operator locates beforehand, on a control screen, in graphic form, the signal to be observed. It also decides which state is allowed and which state is prohibited. In the case of a red light, the operator will locate on his screen

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 control (copy of the shooting objective), the zone corresponding to the fire to be observed, and will determine the authorized color and the prohibited color; in the case of level crossing the operator will be able to locate the position of the open barrier, and the area in which the barrier closes.

 - Observe and establish the state of offense (Ex presence of an automobile in a prohibited position and direction). This observation is made by the system, but the operator locates beforehand on the control screen, the zone and the direction of movement in which the vehicle should not be.

 When the offense is noted by the system, it takes several photos of the vehicle, (or we see at least the number plate,) successive in order to provide proof that the vehicle is moving.

 In the case of automatic speed control, the triggering of photos is directly controlled by the associated radar.

 When digital photos are taken, the system encrypts the additional information necessary to identify the place and date, as well as the nature of the offense.

 The system compresses and encrypts the photo according to public algorithms, and transmits it to the recipient on a physical medium (electrical or optical cable) or electromagnetic (GSM or dedicated radio system).

 The recipient equipped with the same physical transmission medium, and decompression and decryption codes can use the photos for verbalization.

Claims (2)

1) device for automatic crossing control, characterized in that it comprises a box containing a digital photo taking device associated with a photo processing device. The digital photo processing device is characterized in that it: a. receives instructions via a control screen, which make it possible to locate and define the state of the prohibition signal b. receives instructions via a control screen, which allow it to locate and define the prohibited area, and the direction of the vehicles in violation c. stores photos d. performs inlay processing, compression and encryption of photos e. transmits these photos to a communication medium 2) device according to claim 1 characterized in that it can be connected to a speed measuring device which transmits the violation detection and the measured speed to it.