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7515068 |
Vehicle axle sensor
A roadway vehicle sensor includes a coextrusion having a linear conductive section and a linear non-conductive section forming a vehicle deformable closed housing. The linear conductive section has...
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6639521 |
Inductive sensor and method of use
An apparatus for detecting inductance, which is generally disposed outside of the roadway surface. The apparatus includes at least one large aperture wire-loop deployed beside the roadway, on...
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6384739 |
Traffic monitoring system and method
The system provides a method for gathering and sending monitored traffic data via a short messaging system message over a wireless network through a publicly switched telephone network (“PSTN”) to ...
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6380868 |
Permeability-modulated carrier referencing
An apparatus and method for measuring the inductance of a wire-loop without direct reference to any particular time-constant or frequency. Low-frequency noise induced into the wire-loop is canceled...
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6263039 |
Load counter for dump truck or the like
A load mechanism operation cycle counter is provided for use with a dump truck or similar vehicle. The counter preferably is operated in response to the initiation and/or cessation of signal to the...
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5668540 |
Detection device for data relating to the passage of vehicles on a road
A detection device for data relating to the passage of vehicles over a road. The detection device is to be placed in a groove provided in the upper portion of the road and comprises a first...
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5629674 |
Device for monitoring the alleyways between shelf units in a warehouse
The alleyway-monitoring device disclosed has, mounted at different heights, two light barriers (16 to 26, 28 to 30), the higher of which is at a height at which the light beam can be broken only by...
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5614894 |
Device to detect particularly one or several wheels of a vehicle or of a wheeled mobile engine and process for using this device
A device for detecting one or several wheels of a vehicle or of a wheeled engine and a process using this device. The device is constituted by at least one electromagnetic loop and by an evaluation...
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5600132 |
Bi-directional laser light detection device having a laser light pipe
A bi-directional portable laser light detection device for receiving and detecting laser light from one or more of a plurality of sources includes a laser light pipe that comprises a solid body of...
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5432508 |
Technique for facilitating and monitoring vehicle parking
Parking for vehicles is facilitated, monitored and controlled by using sensors to determine the availability of vacant parking spaces and by indications to alert vehicle operators at a substantial...
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5420903 |
Microwave object counter and method
A microwave signal is generated from a fixed source across a fixed path to trigger individual FM transmitters in passing objects such as race vehicles. A vehicle transceiver then sends an...
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5402118 |
Method and apparatus for measuring traffic flow
This invention aims at providing an traffic flow measurement method and apparatus attaining the stable measurement without being affected by the change in the brightness of the external environment...
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5392034 |
Vehicle classification system using profile
A vehicle classification system automatically identifies types of vehicles traveling along a vehicle lane of toll road. The system has a detector for detecting the passage of the vehicle at a...
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5389921 |
Parking lot apparatus and method
A parking lot traffic control and fee collection system is disclosed for use in stadium type parking lots. A vehicle counter installed in a portable traffic pylon is provided at the entry point for...
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5247297 |
Vehicle detector method for multiple vehicle counting
An estimate of the number of vehicles crossing a loop inductor having one or more interconnected discrete loops of the type found in vehicle detector system installations. A measuring signal...
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5090030 |
Integral lap counter for radio-controlled models
A method and apparatus for counting the laps completed by a remote-controlled model that detects a spurious radio-frequency electromagnetic signal spontaneously generated by the unmodified model....
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5028921 |
Vehicle detector method and system
A method of updating the reference count in a period shift measurement vehicle detector permits conditional reference count updating in the No Call direction whenever the sample count minus...
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4999793 |
Microcomputer real-time flash x-ray controller for data acquisition
A microcomputer-based real-time flash x-ray controller, which completely eliminates the "guesswork" in capturing projectiles on radiographs. The microcomputer measures the projectile velocity with...
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4947353 |
Automatic vehicle detecting system
An automatic vehicle detection system within a toll collecting system has a scanning laser unit positioned on one side of a roadway, a vertical photoelectric detector on the opposite side of the...
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4922447 |
Device for measuring the distance travelled and the speed of a rail vehicle
A device for measuring the distance travelled by and the speed of a rail vehicle fitted with wheel-coupled distance-pulse generators is disclosed in which both distance and speed are calculated...
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4901334 |
Traffic counter apparatus for selective lane use
A housing assembly of the apparatus includes a roadway mounted base plate to which a housing is secured with the housing having a low profile and inclined side and end walls to permit placement of...
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4862163 |
Traffic monitoring system
An improved traffic monitoring system is disclosed in which a microprocessor is connected to an analog to digital converter providing a series of digital samples of the pressure within a road tube...
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4843578 |
Vehicle speed monitoring and logging means
This invention is a means for detecting and logging the number of instances that predetermined speeds have been exceeded. This device can be used by car owners to monitor their driving habits as...
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4524932 |
Railroad car wheel detector using hall effect element
A Hall effect element, incorporated into an integrated circuit unit with temperature compensation, voltage regulation, and amplification, is mounted on top of a permanent magnet made of ceramic...
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4441196 |
Speed independent system for obtaining preselected numbers of samples from object moving along fixed path
A speed independent system is used for obtaining a preselected number of samples from an object moving along a fixed path, such as a railroad train passing through a sensing zone along the section...
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4385227 |
Automatic delay and high velocity sensing system
A circuit consisting of five cascaded binary coded decimal, UP-DOWN circuits with associated gates, a first input causes the counters to count up, at a 10 Mhz rate until any second input, which...
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4383239 |
Detector for detecting the passage of heavy objects on a roadway
A detector for detecting the passage of heavy objects on a roadway, wherein the detector is an elongate strip in the form of nested channel-section members, said members comprising, from the...
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4283031 |
System controlling apparatus which compares signals from sensors monitoring passing objects with pre-determined parameter information to control the system
A system controlling apparatus wherein an array of sensors are used for detecting information and for providing signals indicative of information concerning passing articles such as presence of an...
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4271512 |
Information collection and storage system with memory test circuit
An information recording system having an electrical circuit for counting serially occurring pulses, the number of which is indicative of certain information, a memory storage unit adapted to be...
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4265419 |
Apparatus for car counting and discrimination
An apparatus for railway car counting and discrimination comprises three transducers placed at the railway track at given distances from each other and a digital logic circuit for processing the...
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4258430 |
Information collection and storage system with removable memory
An information collection and storage system and method wherein pulses representing sensed information are counted and wherein resulting pulse counts are written into a volatile random access...
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4256278 |
Railway freight car identification system
A system is provided for determining whether a railway car passing a sensing station is a freight car. The system utilizes wheel trips along the track at the sensing station to determine the...
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4248396 |
Method and apparatus for detecting railroad cars
A system for detecting railroad cars in a moving train. The cars are assumed to be of the type having two wheel trucks, each with at least two axles arranged adjacent to each other such that the...
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4229726 |
Portable electronic traffic event recorder
Apparatus for recording traffic events occurring at a variety of vehicular traffic passageways, such apparatus including a portable housing unit having a keyboard presenting a predetermined pattern...
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4201908 |
Measurement and recording apparatus and system
A system for measurement and recording of data as to events and conditions is disclosed including a recorder unit adapted to be located at a surveillance site and connected to detectors providing...
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4173010 |
Traffic sign and improved system for recording vehicle speed
Sensors are positioned adjacent a roadway. Such sensors conveniently comprise pressure switches connected to two speed hoses to be run over as in a traffic counter. Alternately, photo-optical,...
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4135155 |
System and method for determining vehicle ground speed
A plurality of sensors are located on one of the bodies, staggered by fixed distances from each other along the direction of relative movement. The sensors are responsive to a characteristic of the...
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4070560 |
Transit zone monitor circuit
A zone monitor circuit for a transit zone having plural entry-exit ports each equipped with a sensor that generates an arrival pulse signal when a vehicle or other movable object passes through the...
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4064501 |
Control system
By this invention a system for controlling the servicing of customers arriving in a vehicle at a service area is provided, in which system the arrival of the vehicle, the supplying of the services...
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4052595 |
Automatic vehicle monitoring system
A vehicle monitoring system for detecting the passage of vehicles past a predetermined point along a road. Using a pair of magnetic sensors positioned in a spaced relationship, together with...
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4029274 |
Train control signalling system
In a train control signalling system, a wayside signal of an unknown code rate is detected and decoded on board the train to determine the code rate and derive the coded train control intelligence....
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3980867 |
Traffic signal loop monitoring system
A monitoring system is provided for use in conjunction with a wire loop which is embedded in a roadway, and which senses the presence of vehicles in the roadway to control a traffic signal. The...
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3978321 |
Portable hand-carried automobile counting device
A portable hand-carried battery-operated electronic automobile counting device designed for counting automobiles entering a paid parking area as a check on attendant's collection of parking fees....
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3949355 |
Sensor for vehicular traffic data accumulating systems
A pneumatic road tube, a pressure responsive transducer, and an electronic circuit provide a vehicle sensor mechanism for use in a traffic data accumulating system. A complex air wave is produced...
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3943339 |
Inductive loop detector system
Apparatus for use in combination with multiple inductive loops for detecting metal objects, e.g. vehicles, in the immediate vicinity of each of said loops. Each loop may, for example, be a coil of...
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3927389 |
Device for determining, during operation, the category of a vehicle according to a pre-established group of categories
A vehicle category indicator or registering device is disclosed which is characterized in that it comprises a certain number of sensors arranged on the roadway, a vehicle separator device, all...
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3805089 |
DIGITAL ACCELERATION MEASUREMENT DEVICE
Digital acceleration sensor comprising pulse rate responsive means for determining the rate of change of a detected variable pulse rate, the pulse rate representing a velocity state or rate of...
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3775744 |
TRAFFIC CONTROLLER WITH BINARY COUNTER
A controller for traffic lights employing solid state components and providing both vehicular and pedestrian control. Cross street controls initiate operation of a binary counter sequentially to...
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3758756 |
MICROMINIATURE CENTER MOUNTABLE ON THE ENGINE
A miniaturized recorder and display device for the compilation of engine operating parameters for mounting within or about an engine housing comprising at least one microminiature control circuit,...
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3748443 |
WHEEL SENSING APPARATUS
A treadle consisting of a set of upper contacts electrically separated from a set of lower contacts and placed in staggered arrangement with the lower set. The lower set has a fixed impedance...
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