4699 results about "Signal lamp" patented technology

An emergency vehicle traffic light preemption system for preemption of traffic lights at an intersection to allow safe passage of emergency vehicles. The system includes a real-time status monitor of an intersection which is relayed to a control module for transmission to emergency vehicles as well as to a central dispatch office. The system also provides for audio warnings at an intersection to protect pedestrians who may not be in a position to see visual warnings or for various reasons cannot hear the approach of emergency vehicles. A transponder mounted on an emergency vehicle provides autonomous control so the vehicle operator can attend to getting to an emergency and not be concerned with the operation of the system. Activation of a priority-code (i.e. Code-3) situation provides communications with each intersection being approached by an emergency vehicle and indicates whether the intersection is preempted or if there is any conflict with other approaching emergency vehicles. On-board diagnostics handle various information including heading, speed, and acceleration sent to a control module which is transmitted to an intersection and which also simultaneously receives information regarding the status of an intersection. Real-time communications and operations software allow central and remote monitoring, logging, and command of intersections and vehicles.

A heat dissipating LED signal lamp emitting structure includes an isothermal board, a light emitting unit on the isothermal board, a heat conducting cylinder connected to the bottom of the isothermal board, a heat dissipating body around the periphery of the heat conducting cylinder and comprised of heat sinks, a circular cover body above the isothermal board for covering the isothermal board, a reflecting groove at the center of the cover body for passing through the light emitting unit, and a transparent lid on the cover body for covering the light emitting unit. With the heat dissipating effect of the heat dissipating body, the operating heat produced by the light emitting unit can be dissipated to the outside. The invention not only uses a single light emitting unit as a signal lamp emitting source, but also enhances the light emitting efficiency and the life expectancy of the light emitting unit.

An LED signal using a novel optical element to control the light distribution of a small LED light source. Light emitted by the LEDs illuminates the optical element. The optical element has a plurality of clusters, shaped along the x-, y- and z-axis to control the light. After the light is distributed, it encounters a second optical surface of the optical element, typically a fresnel surface. The light is controlled by the optical element.

Optionally, a lens can be placed over each LED to control the light pattern of the LED. The lens has an entry face to direct the light to a total internal reflection surface on the side, which redirects the light to the exit face. The resulting signal is a uniform, efficient signal.

An LED signal lamp (100) comprises: a housing (102), at least one LED excitation source (108) operable to emit excitation radiation of a first wavelength range (blue light), at least one phosphor material (114) for converting at least a part of the excitation radiation to radiation of a second wavelength range and a substantially transparent cover (104) provided on the housing opening. In one arrangement the excitation source (LED chip) incorporates the phosphor material. Alternatively, the phosphor can be provided remote to the excitation source such as for example on a transparent substrate which is disposed between the excitation source and transparent cover. In other arrangements, the phosphor is provided on the transparent cover or other optical components as a layer on a surface of the cover or incorporated within the cover/optical component material.

The invention discloses an automatic driving system based on enhanced learning and multi-sensor fusion. The system comprises a perception system, a control system and an execution system. The perception system high-efficiently processes a laser radar, a camera and a GPS navigator through a deep learning network so as to realize real time identification and understanding of vehicles, pedestrians, lane lines, traffic signs and signal lamps surrounding a running vehicle. Through an enhanced learning technology, the laser radar and a panorama image are matched and fused so as to form a real-time three-dimensional streetscape map and determination of a driving area. The GPS navigator is combined to realize real-time navigation. The control system adopts an enhanced learning network to process information collected by the perception system, and the people, vehicles and objects of the surrounding vehicles are predicted. According to vehicle body state data, the records of driver actions are paired, a current optimal action selection is made, and the execution system is used to complete execution motion. In the invention, laser radar data and a video are fused, and driving area identification and destination path optimal programming are performed.

A traffic control system is provided including an arrangement of traffic lights at a traffic intersection, and a radar sensor installed at the intersection such that its field and range of detection covers at least one approach to the intersection. The radar sensor is adapted to sense the presence of vehicles within a predetermined field of view and range. A controller for switching the traffic lights is operated by an electronic processor utilizing information developed from data inputted from the radar sensor. The radar sensor is a multi-object radar sensor capable of developing data from which the location, speed, acceleration or deceleration, and direction of travel of each vehicle within its field and range of detection can be derived.

An emergency vehicle traffic light preemption system for preemption of traffic lights at an intersection to allow safe passage of emergency vehicles. The system includes a real-time status monitor of an intersection which is relayed to a communications controller for transmission to emergency vehicles as well as to a central dispatch office. The system also provides for audio warnings at an intersection to protect pedestrians who may not be in a position to see visual warnings or for various reasons cannot hear the approach of emergency vehicles. A transponder mounted on an emergency vehicle provides autonomous control so the vehicle operator can attend to getting to an emergency and not be concerned with the operation of the system. Activation of a Code 3 situation provides communications with each intersection being approached by an emergency vehicle and indicates whether the intersection is preempted or if there is any conflict with other approaching emergency vehicles. On-board diagnostics handle various information including heading, speed, and acceleration sent to a communications controller which is transmitted to an intersection and which also simultaneously receives information regarding the status of an intersection.

A driving assistance apparatus that assists driving of a vehicle, includes: a vehicle speed sensor; a communication unit that obtains traffic light information relating to a change in a display condition of a traffic light disposed in an advancement direction of the vehicle; a position calculation unit that calculates relative position information between the vehicle and a traffic light location where the traffic light is disposed; and a passage assistance control unit. The passage assistance control unit detects an operating condition of the vehicle at an intersection location before the traffic light, calculates a corrected vehicle speed on the basis of the operating condition and a current vehicle speed, and determines whether or not the vehicle is permitted to pass through the traffic light location on the basis of the corrected vehicle speed, the relative position information between the vehicle and the traffic light location, and the traffic light information.

A side turn signal light that flashes during operation is disposed on a vehicle body side surface of a vehicle. Further, a camera that images a vehicle side zone that includes the side turn signal light in a section thereof, and a near-infrared LED for night-time illumination are respectively housed in a door mirror. A coating that allows visible light component to pass through while reducing near-infrared component is applied to a lamp bulb of the side turn signal light. Alternatively, a film that allows visible light component to pass through while reducing near-infared component is applied to a lens of the side turn signal light.

The invention provides a traffic signal lamp identifying system. The system comprises an image acquisition module for acquiring images, a traffic signal lamp detecting module, a traffic signal lamp classifying module, a traffic signal lamp status identifying module and an identification information output module, wherein the traffic signal lamp detecting module detects whether a traffic signal lamp is in an image or not, records the area position and size of the traffic signal lamp if the traffic signal lamp is in the image; the traffic signal lamp classifying module cuts one or more traffic signal lamp areas in the image which is detected to contain the traffic signal lamp according to the area position and size, analyzes the cut traffic signal lamp areas, and determines the classification of a current traffic signal lamp; the traffic signal lamp status identifying module analyzes and identifies color information of the traffic signal lamp area, and determines the status of the traffic signal lamp according to the color information and the classification; and the identification information output module generates corresponding prompt information according to the identified status of the traffic signal lamp. The traffic signal lamp identifying system has a good assistant effect for drivers and achromates.

The invention provides an entrance ring road self-adaptive control system and a method, which belong to the technical field of intelligent traffic signal system control. The system of the invention comprises traffic detection equipment, traffic control equipment and a communication module, wherein the traffic detection equipment comprises a queuing detector, an upstream detector, a downstream detector and an abouchement detector, and is used for detecting and collection traffic flow data, the traffic control equipment comprises a ring road controller and an entrance ring road signal lamp, and is responsible for controlling the entrance ring road traffic flow rate, and the communication module is used for communication. The system and the method of the invention can response to the traffic flow rate change on a high-speed road, and can automatically select different control methods according to the vehicle flow rate at major trunk roads and at entrance ring road parts. In addition, the hardware of the ring road controller adopted by the invention is simple and is easy to be realized, the development cost is low, and the application range is wide.

A LED signal lamp that monitors, controls and tests the operational status of a plurality of LEDs. A separate current source is provided for each LED and resistors are in series between the current sources and LEDs. Analog-to-digital converters monitor the voltages at the resistors and LEDs and convert the voltages to digital form for a data processor. The data processor determines the junction temperature of each LED, controls the amount of current supplied to each LED and tests the operational status of each LED by matching its characteristics to a known diode curve. A pulse-width modulator provides further control of the amount of power supplied to the current sources. The data processor further controls a vital disconnect and a vital load. An energy storage/limiter circuit stores energy for the data processor during the absence of normal power input. Related methods of monitoring, controlling and testing such an LED system are also disclosed.

The invention relates to the technical field of traffic control, in particular to a wireless traffic signal system and a method thereof cooperated with vehicle tracks at intersections. The invention adopts a special short-range communication mechanism. The system comprises intersection transmitting equipment, vehicle receiving equipment, a singlechip, voice output equipment, GPS (Global Position System) equipment and a vehicle display. The singlechip carries out data fusion processing on real-time traffic information and the longitude and the latitude of vehicles to obtain information of traffic signal lamps on the vehicle tracks and outputs the information to the vehicle display. The method comprises the step that the singlechip carries out data fusion on information of an electronic map, a real-time traffic lamp signal, vehicle track positioning and traveling direction and displays the traffic signal on the electronic map when the vehicles enter the communication range of a special short-range communication technology. The invention can ensure that the traffic signal is transmitted to the vehicles through the system under the condition that a driver cannot clearly see the front signal lamps and thereby the driver can clearly know about the current contents displayed by the traffic signal lamps by using a display or voice prompt system.

The present invention discloses a system that alerts the operator of a vehicle, when operator is not in compliance with an intersection signal condition, where the intersection traffic signal conditions does not permit driver of vehicles to cross the intersection. The system comprises of traffic light or stop sign RF transmitter or transceiver units, and plurality of vehicles equipped with vehicle collision avoidance device containing RF transceivers to receive signals from the intersection signal transmitter units, the vehicle collision avoidance device is equipped with vehicle speed comparator CPU and vehicle travel direction sensing circuitry using a compass or GPS receiver to determine vehicle travel direction and monitor vehicle speed. A beeper, LED or vibrator is incorporated for warning the driver.

If a vehicle operator becomes none responsive to maintain vehicle speed in compliances with the traffic signal light condition, the vehicle collision avoidance device alerts the driver with audio visual and vibrating alarm signals for the driver to slow down the vehicle to stop. If within a determined time the driver does not comply, the vehicle collision avoidance device generates a secondary audio and visual signals to alert pedestrians, and transmits RF signals to other vehicles equipped with collision avoidance devise for the driver(s) located at that intersection take necessary measures to avoid an intersection collision.

A high power LED lamp and method for retrofitting conventional traffic signal lamps. The LED lamp includes a housing, a power supply disposed in the housing, a plurality of LEDs mounted to a substantially planar mounting surface in the housing and electrically connected to the power supply for producing diverging light, and a threaded electrical connector extending from the housing. The method includes replacing a conventional incandescent light bulb with the LED lamp, and installing a Fresnel lens inside the traffic signal lamp that collimates and just fills and illuminates the outer lens of the traffic signal lamp.

The invention relates to a road self-adapting entry ramp afflux control device and a method thereof, used for adjusting the entry ramp afflux rate of the speedway or the city express way. The core device ramp afflux controller collects the traffic parameters of the flux, the speed, the occupancy and the like detected by the traffic parameter detectors in certain period, through the EXPAlinea arithmetic, the ramp afflux signal lamps change alternately to control the flux, also control the assistant devices of the ramp afflux down counter, the ramp port passing light and the message board and the like, which causes the integral device full of humanness. EXPAlinea arithmetic first adopts the dynamic target occupancy fundamental algorithm to obtain the elemental fundamental algorithm, then performs the smoothness according to the regulation of the last period or adopts the queue preference strategy according to the upstream and downstream of the main line and the ramp. The signal time assignment is the manifestation of the regulation obtained by the EXPAlinea control algorithm, to display by the traffic signal lamp. With the same regulation, the queue length of the ramp is different, and the different signal period and the green ratio are adopted.

This invention relates to a device for monitoring peccancy cars based on omnibearing vision sensors including a microprocessor, a monitor sensor monitoring road situations and traffic signal lamps, in which, the sensor, an omnibearing vision sensor, is connected with the microprocessor including: an image data read module, an image data file storage module, a sensor rating module, a virtual test line designing module, a designing module for roadway transit directions, a designing module for traffic signal lamp state test regions, an image spread process module, a color space transforming module, an adaptive background deduction process module, a connected region identification module, a moving car tracing module and a car paccancy judgment module with a road paccancy judgment unit for directions and a road paccancy judgment unit without roadway directions.

The multi-color light lamp has a base divided into a plurality of segments. The three segments are spaced at 120 degrees. More or less segments can be used. An LED is positioned in each segment, the LED in each segment emits a color distinct from the light emitted by the LEDs in the other segments. If the lamp is to be used for automotive purposes, the LED in a first segment emits red light as a taillight and a stop light, the LED in a second segment emits yellow light a turn signal lamp, and the LED in the third segment emits white light as a backup light. A light pipe is operatively associated with the LEDs in each segment for directing emitted light away from the base. The LEDs (preferably two per segment) are mounted upon a thermally efficient printed circuit board such as a flex-on aluminum board.

The invention relates to a traffic signal light intelligent control system and a control method thereof, which belong to the technical field of intelligent traffic; the system comprises four CCD camera heads, a signal processor and a controller; and the method comprises the following steps: establishing a coordinate system and the transformation relation thereof; sequentially carrying out distortion correction, sharpening and perspective transformation on a traffic flow image; extracting edges of a vehicle image and filtering out lane lines and traffic sign arrows in the image; cutting the image; carrying out edge projection for obtaining pixel coordinates which correspond to the queue length of vehicles waiting to pass on each type of lane in each direction under the computer image coordinate system; calculating the actual queue length of the vehicles waiting to pass; obtaining time required for leading all the vehicles on each type of the lane in each direction to pass; and controlling the opening and the closing of a traffic signal light according to the time of leading all the vehicles to pass. The traffic signal light intelligent control system can control the opening time and the closing time of the traffic signal light in a high-efficient and energy-saving manner, thereby providing a scientific information base for realizing the urban intelligent traffic.