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公开(公告)号：CA2644875A1
公开(公告)日：2010-05-25
申请号：CA2644875
申请日：2008-11-25
Applicant: INT ROAD DYNAMICS INC
Inventor： BERGAN TERRANCE ARTHUR , HANSON RANDAL LEROY
Abstract: The present invention provides an improved weigh-in-motion scale. A slight increase in the thickness of a an upper, flexibly-deformable metal plate e.g., having a thickness of about 0.604 inches to about 0.756 inches in a thin, flexibly-deformable plate system coupled with a change in the transverse locations of the load cells each of the strain gauge channels is spaced e.g., by an amount of about 52 % to about 54 % of the distance from the center line of the bottom or lower metal plate to the respective longitudinal edge of the bottom or lower metal plate, provides the improved weigh-in-motion scale, which is capable of weighing substantially heavier loads than previously known weigh-in-motion scales. In use, as weight is applied to the wcigh-in-motion scale, the upper flexibly-deformable metal plate elastically bends. The strain gauges thus provide a changing resistive value proportional to the bending of the flexible element and the weight applied, to generate signals to the Wheatstone bridge circuit, which then provides output signals from the Wheatstone bridge circuit, which are proportional to the force applied to the upper flexibly-deformable metal plate.
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Patent Agency Ranking
公开(公告)号：CA2656132A1
公开(公告)日：1999-11-15
申请号：CA2656132
申请日：1998-06-16
Applicant: INT ROAD DYNAMICS INC
Inventor： BERGAN TERRANCE ARTHUR , KLASHINSKY ROD
Abstract: Traffic monitoring and warning systems and vehicle ramp advisory systems are provided herein. Such system includes a set of sensor arrays comprising a set of above-road electro-acoustic sensor arrays which is disposed above a traffic lane approaching a hazard for producing signals which are indicative of whether the vehicle is an automobile or a truck and, if it is a truck, to record the presence of such truck, and to provide signals which are indicative of the speed of such truck. A processor is provided which has a memory for storing site-specific data related both to the geometry of the hazard and to signals which have been received from the set of above-road electro-acoustic sensor arrays. A traffic signalling device is associated with the traffic lane and is disposed downstream of the set of above-road electro-acoustic sensor arrays, the traffic signalling device being controlled by the processor. The processor is responsive to the signals from the set of above-road electro-acoustic sensor arrays for computing an actual speed of the truck and for computing a computed maximum safe speed for such truck at the hazard. The computed maximum safe speed of the truck is derived from the site-specific dimensional data of the hazard and from at least the initial speed of the truck, the computed maximum safe speed of the truck being a maximum safe speed for that truck safely to negotiate the hazard. The processor compares the computed actual speed of the truck with the computed maximum safe speed for the truck. Then, the processor automatically operates the traffic signalling device if the computed actual speed of the truck exceeds the computed maximum safe speed for the truck. The processor also discontinues operating the traffic signalling device if the computed actual speed of the truck no longer exceeds the computed maximum safe speed for the truck.
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公开(公告)号：CA2656141A1
公开(公告)日：1999-11-15
申请号：CA2656141
申请日：1998-06-16
Applicant: INT ROAD DYNAMICS INC
Inventor： KLASHINSKY ROD , BERGAN TERRANCE ARTHUR
Abstract: Traffic monitoring and warning systems and vehicle ramp advisory systems are provided herein. Such system includes a set of sensor arrays comprising a set of above-road electro-acoustic sensor arrays which is disposed above a traffic lane approaching a hazard for producing signals which are indicative of whether the vehicle is an automobile or a truck and, if it is a truck, to record the presence of such truck, and to provide signals which are indicative of the speed of such truck. A processor is provided which has a memory for storing site-specific data related both to the geometry of the hazard and to signals which have been received from the set of above-road electro-acoustic sensor arrays. A traffic signalling device is associated with the traffic lane and is disposed downstream of the set of above-road electro-acoustic sensor arrays, the traffic signalling device being controlled by the processor. The processor is responsive to the signals from the set of above-road electro-acoustic sensor arrays for computing an actual speed of the truck and for computing a computed maximum safe speed for such truck at the hazard. The computed maximum safe speed of the truck is derived from the site-specific dimensional data of the hazard and from at least the initial speed of the truck, the computed maximum safe speed of the truck being a maximum safe speed for that truck safely to negotiate the hazard. The processor compares the computed actual speed of the truck with the computed maximum safe speed for the truck. Then, the processor automatically operates the traffic signalling device if the computed actual speed of the truck exceeds the computed maximum safe speed for the truck. The processor also discontinues operating the traffic signalling device if the computed actual speed of the truck no longer exceeds the computed maximum safe speed for the truck.
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公开(公告)号：CA2656134A1
公开(公告)日：1999-11-15
申请号：CA2656134
申请日：1998-06-16
Applicant: INT ROAD DYNAMICS INC
Inventor： KLASHINSKY ROD , BERGAN TERRANCE ARTHUR
Abstract: Traffic monitoring and warning systems and vehicle ramp advisory systems are provided herein. Such system includes a set of sensor arrays comprising a set of above-road electro-acoustic sensor arrays which is disposed above a traffic lane approaching a hazard for producing signals which are indicative of whether the vehicle is an automobile or a truck and, if it is a truck, to record the presence of such truck, and to provide signals which are indicative of the speed of such truck. A processor is provided which has a memory for storing site-specific data related both to the geometry of the hazard and to signals which have been received from the set of above-road electro-acoustic sensor arrays. A traffic signalling device is associated with the traffic lane and is disposed downstream of the set of above-road electro-acoustic sensor arrays, the traffic signalling device being controlled by the processor. The processor is responsive to the signals from the set of above-road electro-acoustic sensor arrays for computing an actual speed of the truck and for computing a computed maximum safe speed for such truck at the hazard. The computed maximum safe speed of the truck is derived from the site-specific dimensional data of the hazard and from at least the initial speed of the truck, the computed maximum safe speed of the truck being a maximum safe speed for that truck safely to negotiate the hazard. The processor compares the computed actual speed of the truck with the computed maximum safe speed for the truck. Then, the processor automatically operates the traffic signalling device if the computed actual speed of the truck exceeds the computed maximum safe speed for the truck. The processor also discontinues operating the traffic signalling device if the computed actual speed of the truck no longer exceeds the computed maximum safe speed for the truck.
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公开(公告)号：CA2644875C
公开(公告)日：2013-02-26
申请号：CA2644875
申请日：2008-11-25
Applicant: INT ROAD DYNAMICS INC
Inventor： BERGAN TERRANCE ARTHUR , HANSON RANDAL LEROY
Abstract: The present invention provides an improved weigh-in-motion scale. A slight increase in the thickness of a an upper, flexibly-deformable metal plate in a thin, flexibly-deformable plate system coupled with a change in the transverse locations of the load cells provides the improved weigh-in-motion scale, which is capable of weighing substantially heavier loads than previously known weigh-in-motion scales. In use, as weight is applied to the weigh-in-motion scale, the upper flexibly-deformable metal plate elastically bends. The strain gauges thus provide a changing resistive value proportional to the bending of the flexible element and the weight applied, to generate signals to the Wheatstone bridge circuit, which then provides output signals from the Wheatstone bridge circuit, which are proportional to the force applied to the upper flexibly-deformable metal plate.
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公开(公告)号：CA2655995A1
公开(公告)日：1999-11-15
申请号：CA2655995
申请日：1998-06-16
Applicant: INT ROAD DYNAMICS INC
Inventor： BERGAN TERRANCE ARTHUR , KLASHINSKY ROD
Abstract: Traffic monitoring and warning systems and vehicle ramp advisory systems are provided herein. Such system includes a set of sensor arrays comprising a set of above-road electro-acoustic sensor arrays which is disposed above a traffic lane approaching a hazard for producing signals which are indicative of whether the vehicle is an automobile or a truck and, if it is a truck, to record the presence of such truck, and to provide signals which are indicative of the speed of such truck. A processor is provided which has a memory for storing site-specific data related both to the geometry of the hazard and to signals which have been received from the set of above-road electro-acoustic sensor arrays. A traffic signalling device is associated with the traffic lane and is disposed downstream of the set of above-road electro-acoustic sensor arrays, the traffic signalling device being controlled by the processor. The processor is responsive to the signals from the set of above-road electro-acoustic sensor arrays for computing an actual speed of the truck and for computing a computed maximum safe speed for such truck at the hazard. The computed maximum safe speed of the truck is derived from the site-specific dimensional data of the hazard and from at least the initial speed of the truck, the computed maximum safe speed of the truck being a maximum safe speed for that truck safely to negotiate the hazard. The processor compares the computed actual speed of the truck with the computed maximum safe speed for the truck. Then, the processor automatically operates the traffic signalling device if the computed actual speed of the truck exceeds the computed maximum safe speed for the truck. The processor also discontinues operating the traffic signalling device if the computed actual speed of the truck no longer exceeds the computed maximum safe speed for the truck.
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