This invention relates to a system for monitoring traffic patterns, speed measuring, and red light enforcement on at least one designated surface supporting traffic. More particularly, the invention relates to an autonomous automated mobile system capable of monitoring multi-lane traffic and recording traffic violations related to red light signals and speed limits.
A system for traffic monitoring, vehicle speed determination and traffic light violation detection and recording is disclosed. In one embodiment of the current invention, the system is arranged for monitoring traffic supported by a designated surface of a roadway, detecting individual vehicles, measuring vehicle speeds, identifying potential traffic violators, and triggering a traffic imaging device such as a camera or a video system. Different embodiments of the system can also be used by law enforcement agencies and research groups for other applications such as measurement of traffic density, monitoring vehicle speed, and studying traffic patterns. One application of particular embodiments of the current invention is to enforce red light violations. The systems of those embodiments rely on eye-safe laser radiation and scattering of such radiation off the road surface to determine the presence of a vehicle, calculate its speed, determine when a violation is likely to occur (based on predetermined criteria), and trigger the traffic imaging device for collecting evidence of the violation.
Installing traffic monitoring and photo-enforcement systems of prior art customarily involves digging traffic surfaces and pavements in order to install cables for interfacing the violation detecting/recording system with the traffic control devices for synchronization. Such an arrangement, for example, can make a prior art red light photo-enforcement system at least a semi-permanent installation for a specific approach at an intersection. In contrast, the disclosed exemplary embodiments of the current invention do not have a wired connection between a traffic light controller and a system for traffic monitoring in order to communicate the status of the traffic light signal. In some embodiments of the current invention, the state of the traffic signal can be determined remotely by using an optical system coupled to individual detectors or a CCD (charge-coupled device) image recorder as a remote traffic light sensor.
The disclosed embodiments of the system for automated monitoring of traffic patterns, speed measuring, and red light enforcement eliminates the installation costs associated with interfacing by hard wiring the traffic signal controller with conventional Red Light Camera applications. In conjunction with non-intrusive speed quantification technologies (such as laser or video speed sensors), pertinent embodiments of the disclosed systems for monitoring of traffic patterns in accordance with the current invention make it possible to implement an automatic, fully transportable, and autonomous solution. This may be a significant feature for municipalities and police departments who may not decide to install permanent and hard-wired photo-enforcement systems.
Another embodiment of the system according to the current invention includes a mobile monitoring and recording module that can operate in residential areas without disturbing nearby residents or traffic participants. The system module of this embodiment may integrate a lane-specific, laser-based speed measurement device where the laser beams are arranged to impact elongated strips orthogonal to the direction of traffic, detect traffic participants intercepting the elongated strips and determine speeds of the traffic participants having no need to continuously correct the determined speed in accordance to angular relationship between the measuring device and the target traffic participants (“cosine corrections” known in prior art). If any of the traffic participants exceeds and violates a predetermined speed limit, a high-speed visible/infrared (IR) digital camera and an IR flash illuminator are arranged to record images of the violating traffic participant to allow generation of citations both day and night. All sensors of those embodiments may be mounted, for example, on a single erector section, which, in turn, allows the system to be mounted on a wheeled trailer arranged to support and transport the erector section. An exemplary system of this embodiment may be powered by a hybrid electric battery/quiet diesel generator system and requires no hard-wired connections to the local utility infrastructure.
One embodiment of the current invention is directed to autonomous systems for automated monitoring of traffic patterns on at least one designated surface including at least one mobile monitoring and recording module. The at least one mobile monitoring and recording module includes at least one support and stabilization section, at least one erector section, at least one autonomous source of electric energy, at least one electric energy storage device, and at least one control and information storage unit. The at least one support and stabilization section incorporates a transportation subsection arranged to provide mobility when coupled to a source of a mechanical force and at least one stabilizing subsection arranged to stabilize the at least one mobile monitoring and recording module in a stationary traffic monitoring position. The at least one erector section includes an erector arranged to erect at least one speed measuring device, at least one traffic imaging device, and at least one illumination device at respective predetermined heights above the designated surface.
Another embodiment of the current invention pertains to autonomous systems for automated monitoring of traffic patterns, speed measuring, and red light enforcement on at least one designated surface including at least one mobile monitoring and recording module. The at least one mobile monitoring and recording module includes at least one support and stabilization section, at least one erector section, at least one autonomous source of electric energy, at least one electric energy storage device, and at least one control and information storage unit. The at least one support and stabilization section incorporates a transportation subsection arranged to provide mobility when coupled to a source of a mechanical force and at least one stabilizing subsection arranged to stabilize the at least one monitoring and recording module in a stationary traffic monitoring position. The at least one erector section includes an erector arranged to erect at least one speed measuring device, at least one traffic imaging device, at least one traffic light sensor, and at least one illumination device at respective predetermined heights above the designated surface.
The above and other embodiments, features, and aspects of the present invention are considered in more detail in relation to the following description of embodiments shown in the accompanying drawings, in which:
The invention summarized above and defined by the enumerated claims may be better understood by referring to the following description, which should be read in conjunction with the accompanying drawings of particular exemplary embodiments. This description of the illustrated embodiment, set out below to enable one to build and use an implementation of the invention, is not intended to limit the invention, but to serve as a particular example thereof. Those skilled in the art should appreciate that they may readily use the conception and specific embodiments disclosed as a basis for modifying or designing other methods and systems for carrying out the same purposes of the present invention. Those skilled in the art should also understand that such equivalent assemblies do not depart from the spirit and scope of the invention in its broadest form.
The erector section 120 includes an erector 121 arranged to erect at least one speed measuring device 122, at least one traffic imaging device 123, and at least one illumination device 124 to respective predetermined heights relative to a designated surface. The designated surface is arranged to support surface traffic and can include, for example, a surface of a roadway, a surface of a parking lot, a ground traffic supporting surface of an airport, or a traffic supporting surface inside structures exemplified by factory halls, sport arenas, or other structures supporting traffic.
The exemplary embodiment illustrated in
A different embodiment from the embodiment illustrated in
One distinction between the embodiment illustrated as an example in
The speed measuring devices 122 of the exemplary embodiments illustrated in
The exemplary embodiments illustrated in
The autonomous source of electric energy 210 may utilize an internal combustion engine generator such is a low-noise (less than 90 dB at positions at or separated more than 20 ft from the monitoring and recording module 100) diesel generator available from Yanmar America Corporation of Buffalo Grove, Ill. Other electric generators including solar panel generators, wind-driven generators, direct chemical energy conversion sources of electric energy, fuel cell generators, and combinations of the listed autonomous sources of electric energy may be used in different embodiments of the current invention. The exemplary embodiments in
Furthermore, the exemplary embodiments in
Such an illumination device may be arranged to emit radiation which is substantially undetectable by an unassisted eye of a human observer (with possible exclusion of unlikely attempts to monitor the illumination device head on from an observation point at extreme proximity of the Infrared Pass/Visible Light blocking filter). Therefore, the illumination device 124 may be arranged to minimize light pollution and substantially eliminate disturbances of residents, bystanders, or traffic participants even in the most densely populated urban settings.
In addition, the embodiments illustrated in
Another exemplary embodiment of the autonomous system for automated monitoring of a traffic pattern different from embodiments illustrated in
The at least one additional erector section 320 may be arranged, depending on particular embodiment, to erect and support several monitoring and imaging devices. In the embodiment illustrated in
The erector section 120 and the at least one additional erector section 320 may be arranged remotely so that any function of the erector sections 120 does not obstruct any function of the additional erector section 320 and vice versa. Furthermore, in the embodiment exemplified by the system illustrated in
One may note that the speed measuring devices 122 (322) of the embodiment illustrated in
The at least one additional erector section 320 may include an additional electric energy generator 310 and an additional control and information storage unit 354 for control and data management, or may be connected to and utilize the control and information storage unit 250, for example via a laser beam link 391.
The intersection 350 illustrated in
An example of an additional embodiment of the mobile monitoring and recording module 100 in accordance with the current invention arranged for monitoring a traffic pattern on a two-way road 400 having two traffic lanes 410 and 420 which support traffic in opposite directions (two-way) is illustrated in
An example of yet another additional embodiment of the mobile monitoring and recording module 100 in accordance with the current invention arranged for monitoring a traffic pattern on a two-way road 400 having two traffic lanes 410 and 420 which support traffic in opposite directions is illustrated in
In addition, in the exemplary embodiment illustrated in
The auxiliary erector sections 510 and 520 of the exemplary embodiment illustrated in
It may be noted that a different embodiment including the auxiliary erector sections similar to the auxiliary erector sections 510 and 520 illustrated in
Furthermore, it may be deduced from observations of
Finally, all exemplary embodiments illustrated in
The present invention has been described with references to the exemplary embodiments arranged for different applications. While specific values, relationships, materials and components have been set forth for purposes of describing concepts of the invention, it will be appreciated by persons skilled in the art that numerous variations and/or modifications may be made to the invention as shown in the specific embodiments without departing from the spirit or scope of the basic concepts and operating principles of the invention as broadly described. It should be recognized that, in the light of the above teachings, those skilled in the art can modify those specifics without departing from the invention taught herein. Having now fully set forth the preferred embodiments and certain modifications of the concept underlying the present invention, various other embodiments as well as certain variations and modifications of the embodiments herein shown and described will obviously occur to those skilled in the art upon becoming familiar with such underlying concept. It is intended to include all such modifications, alternatives and other embodiments insofar as they come within the scope of the appended claims or equivalents thereof. It should be understood, therefore, that the invention may be practiced otherwise than as specifically set forth herein. Consequently, the present embodiments are to be considered in all respects as illustrative and not restrictive.
This application is based upon and claims benefits of copendng and co-owned U.S. patent application Ser. No. 11/118,540 entitled “SYSTEM AND METHOD FOR TRAFFIC MONITORING, SPEED DETERMINATION, AND TRAFFIC LIGHT VIOLATION DETECTION AND RECORDING” filed with the U.S. Patent and Trademark Office on Apr. 29, 2005, which is incorporated herein by reference.