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公开(公告)号：CA2122684C
公开(公告)日：1999-04-06
申请号：CA2122684
申请日：1994-05-02
Applicant: INT ROAD DYNAMICS INC
Inventor： TAYLOR BRIAN , BERGAN TERRY
Abstract: A sensor array system is provided for determining both the number of axles on a vehicle travelling along the roadway and the distance between an axle and an immediately adjacent axle. The sensor array system includes a first group of axl e sensors comprising at least one pair of spaced-apart axle sensors which directly sense axles, the distance between adjacent spaced-apart axle sensors in the first grou p of axle sensors being distance "a". The sensor array further includes a second group of axle sensors comprising a second set of axle sensors which includes at least three ax le sensors which directly sense axles which are more closely spaced apart by a distance "d" which is less than the distance "a" between adjacent axle sensors of the first group o f axle sensors. The span between a first axle sensor of the second group of axle sensor s and a last axle sensor of the second group of axle sensors is distance "b". The span between a first axle sensor in the first group of axle sensors and a last axle sensor in the second group of axle sensors is distance "c". The distance "c" must be greater than, or equal to, the largest unknown axle spacing to be measured on the vehicle. The distance "b" must be greater than, or equal to, distance "a". Finally, the spacing "d" must b e such that any axle of the vehicle must trigger at least one axle sensor. The system o perates independently of the speed of the vehicle.
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公开(公告)号：CA2134717C
公开(公告)日：1999-02-23
申请号：CA2134717
申请日：1994-10-31
Applicant: INT ROAD DYNAMICS INC
Inventor： KLASHINSKY ROD , BERGAN TERRY
Abstract: Traffic monitoring systems which are provided herein include a set of sensors which is disposed in a traffic lane approaching a hazard for providing signals w hich are indicative of the speed, and which are also indicative of at least the weight of a vehicle traversing those set of sensors. A processor has a memory for storing site-speci fic dimensional data related both to the hazard and to signals received from the set of sensors. A traffic signalling device is associated with the traffic lane and is disposed downstream of the set of sensors. The processor, which controls the traffic sign alling device, is responsive to the signals from the set of sensors for computing an ac tual vehicle speed and a computed maximum vehicle speed, which is derived from the si te-specific dimensional data, and also from at least the weight of the vehicle. That speed is the maximum speed for that particular vehicle safely to negotiate that partic ular hazard. The processor operates the traffic signalling device if the computed act ual vehicle speed exceeds the computed maximum vehicle speed. One embodiment is loca ted before a steep downgrade and computes a safe descent speed for a vehicle to desc end the downgrade and displays the safe speed on a roadside sign. Another embodiment is located before a curve, e.g., a highway exit ramp, and uses ramp data together w ith vehicle weight, height and class of vehicle information to predict whether the v ehicle will exceed a threshold speed for that vehicle to negotiate that curve without rollov er. A third embodiment is located on a steep downgrade approaching a traffic signal co ntrolled intersection and computes whether the vehicle is a "runaway" which cannot stop a t the intersection if necessary. In that case the system pre-empts the traffic signal to ensure that the vehicle has right of way through the intersection.
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63.发明专利
公开(公告)号：CA2903374C
公开(公告)日：2020-06-16
申请号：CA2903374
申请日：2014-03-04
Applicant: INT ROAD DYNAMICS INC
Abstract: An apparatus includes a sensor assembly. The sensor assembly includes a transmission-line assembly having an electrical transmission-line parameter configured to change, at least in part, in response to reception, at least in part, of a vehicular load of a moving vehicle. The moving vehicle travelling along a vehicular roadway. The transmission-line assembly is positionable, at least in part, relative to the vehicular roadway.
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公开(公告)号：SA515360985B1
公开(公告)日：2018-07-31
申请号：SA515360985
申请日：2015-09-03
Applicant: INT ROAD DYNAMICS INC
Abstract: يتعلقالاختراعالحاليبتوفيرنظم،أجهزةوطرقلقياسمعلوماتمركبةمتحركة. يمكنقياسمعلوماتمركبةمتحركةبواسطةمستشعر sensor (12) مهيئللاستجابةلواحدةأوأكثرمنعجلاتالمركبةالمتحركةحيثتعملواحدةأوأكثرمنالعجلاتعلىتغييرالمعاوقةالمميزةللمستشعر (12) عندموضعتلامسالعجلات. يمكنتوصيلمقياسالانكسارالكهربائي electrical reflectometry فينظاممعالجةإشارةالنطاقالزمني time domain signal processing system (906) والذييكونقادرعلىقياسالتغيرفيمعاوقةالمستشعر (12) وتحويلتغيرالمعاوقةإلىإشارةبصورةفعالةبالمستشعر (12). يستقبلنظاممعالجةبياناتالإشارةويستخلصمعلوماتالمركبةالمتحركةمنها. شكل 1أ.
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65.发明专利
公开(公告)号：ZA201506204B
公开(公告)日：2017-09-27
申请号：ZA201506204
申请日：2015-08-25
Applicant: INT ROAD DYNAMICS INC
Abstract: Systems, apparatus and methods are provided for measuring moving vehicle information. Moving vehicle information may be measured by a sensor configured to respond to one or more wheels of the moving vehicle, where one or more of the wheels change the characteristic impedance of the sensor at the wheel's contact location. An electrical time domain reflectometry signal processing system which is capable of measuring the change in the impedance of the sensor and converting the impedance change to a signal may be connected operatively to the sensor. A data-processing system receives the signal and extracts the moving vehicle information therefrom.
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Patent Agency Ranking
公开(公告)号：PE20151845A1
公开(公告)日：2015-12-16
申请号：PE2015001871
申请日：2014-03-04
Applicant: INT ROAD DYNAMICS INC
Abstract: UN APARATO INCLUYE UN CONJUNTO DE SENSOR. EL CONJUNTO SENSOR INCLUYE UN CONJUNTO DE LINEA DE TRANSMISION QUE TIENE UN PARAMETRO DE LINEA DE TRANSMISION ELECTRICA CONFIGURADO PARA CAMBIAR, AL MENOS EN PARTE, EN RESPUESTA A LA RECEPCION, AL MENOS EN PARTE, DE UNA CARGA VEHICULAR DE UN VEHICULO EN MOVIMIENTO RELATIVO A UNA CALZADA VEHICULAR A LA LINEA DE TRANSMISION DE MONTAJE POSICIONABLE, AL MENOS EN PARTE, EN RELACION CON LA CALZADA VEHICULAR
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67.发明专利
公开(公告)号：AP201508697A0
公开(公告)日：2015-08-31
申请号：AP201508697
申请日：2014-03-04
Applicant: INT ROAD DYNAMICS INC
Inventor： HAICERT TYLER WILLIAM , MEIER IAN ROBERT , LOCKERBIE MICHAEL DAVID
CPC classification number: G01G19/024 , G01G7/06 , G01L1/06 , G01L1/14 , G07C5/08 , G08B13/2497
Abstract: Systems, apparatus and methods are provided for measuring moving vehicle information. Moving vehicle information may be measured by a sensor configured to respond to one or more wheels of the vehicle, where one or more of the wheels changes the characteristic impedance of the sensor at the wheel's contact location. An electrical time domain reflectometry signal processing system which is capable of measuring the change in the impedance of the sensor and converting the impedance change to a signal may be connected operatively to the sensor. A data-processing system receives the signal and extracts the vehicle information therefrom.
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公开(公告)号：CA2655457C
公开(公告)日：2015-05-19
申请号：CA2655457
申请日：2009-02-24
Applicant: INT ROAD DYNAMICS INC
Inventor： BUSHMAN ROBERT J
Abstract: A method and system for a mid-block traffic detection and traffic signal control system is provided herein that is suited to monitoring heavy commercial vehicles such as trucks is provided. The method comprises detecting a vehicle and determining at least one pre-determined parameter of the vehicle. A traffic condition is evaluated based on the at least one pre-determined parameter. In response to the evaluation of the traffic condition, a traffic signal is controlled.
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公开(公告)号：CA2444144C
公开(公告)日：2010-03-09
申请号：CA2444144
申请日：2003-10-03
Applicant: INT ROAD DYNAMICS INC
Inventor： BUSHMAN ROBERT , BERGAN TERRY
Abstract: A variable speed limit work zone safety system is provided herein. It includ es at least two spaced-apart stations. Each station includes a plurality of sensor s to gather information relative to at least one of traffic flow and road conditions. Th e station includes a controller which is programmed to analyse data which is received from the sensors and to derive, therefrom, an optimum speed limit at a selected location adjacent to , or in, the work zone. The station further includes a communication sub-system to communicate data related to the optimum speed limit to a message board to display the optimum speed t o motorists.
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公开(公告)号：CA2444144A1
公开(公告)日：2004-04-21
申请号：CA2444144
申请日：2003-10-03
Applicant: INT ROAD DYNAMICS INC
Inventor： BERGAN TERRY , BUSHMAN ROBERT
Abstract: A variable speed limit work zone safety system is provided herein. It includ es at least two spaced-apart stations. Each station includes a plurality of sensor s to gather information relative to at least one of traffic flow and road conditions. Th e station includes a controller which is programmed to analyse data which is received from the sensors and to derive, therefrom, an optimum speed limit at a selected location adjacent to , or in, the work zone. The station further includes a communication sub-system to communicate data related to the optimum speed limit to a message board to display the optimum speed t o motorists.
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