CN203894945U - Traffic signal lamp system - Google Patents
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- CN203894945U CN203894945U CN201420274906.8U CN201420274906U CN203894945U CN 203894945 U CN203894945 U CN 203894945U CN 201420274906 U CN201420274906 U CN 201420274906U CN 203894945 U CN203894945 U CN 203894945U
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Abstract
本实用新型公开了一种交通信号灯系统。本实用新型的技术方案要点为：一种交通信号灯系统，主要由两个测距仪装置、两套红绿灯装置和两个摄像头组成，其中测距仪装置包括由上至下依次设置于灯杆上的按钮开关、测距仪和步进电机，灯杆固定于下端的载物台上，在灯杆的上端设有照明灯，红绿灯装置包括车行红绿灯装置和人行红绿灯装置，两个摄像头分别设置于车行红绿灯装置的一侧，所述的测距仪装置、红绿灯装置和摄像头通过控制电路相连接。本实用新型适用于直通大道或者非十字路口，旨在解决行人通过斑马线时，行人的安全问题。
The utility model discloses a traffic signal lamp system. The key points of the technical scheme of the utility model are: a traffic signal light system, which is mainly composed of two rangefinder devices, two sets of traffic light devices and two cameras, wherein the rangefinder devices include The button switch, rangefinder and stepping motor, the light pole is fixed on the lower end of the stage, and the upper end of the light pole is equipped with a lighting lamp. The traffic light device includes a vehicle traffic light device and a pedestrian traffic light device. Two cameras are respectively set On one side of the traffic light device for driving, the rangefinder device, the traffic light device and the camera are connected through a control circuit. The utility model is suitable for straight-through avenues or non-crossroads, and aims to solve pedestrian safety problems when pedestrians pass through zebra crossings.
Description
Technical field
The utility model relates to a kind of urban transportation facility, is specifically related to a kind of non-crossroad access lamp system.
Background technology
Raising along with socioeconomic fast development and people's living standard, traffic route is more and more now, in straight-through main road or non-crossroad, be not suitable for installing time-controlled traffic lights, if traffic lights are installed near zebra stripes, whether there is pedestrian to pass through, the time that pedestrian passes through all cannot be determined, and flow of the people is when less, can affect traffic current; Larger at some major trunk roads vehicle flowrates, pedestrian, can be very inconvenient when walking zebra stripes by road, and night, road light is darker, and pedestrian can exist the hidden danger of a lot of secure contexts when by road.
Utility model content
The technical matters that the utility model solves has been to provide a kind ofly has road monitoring and the current traffic signal lamp system that directs traffic, use this traffic signal lamp system can be in straight-through main road or non-crossroad pedestrian during by zebra stripes, according to stadimeter, record pedestrian and compare apart from the distance in roadside and default value, thus the saltus step of control traffic lights.
The technical solution of the utility model is: a kind of traffic signal lamp system, it is characterized in that mainly by two stadimeter devices, two cover traffic light devices and two cameras form, wherein stadimeter device comprises the pushbutton switch being set in turn on lamp stand from top to bottom, stadimeter and stepper motor, lamp stand is fixed on the objective table of lower end, upper end at lamp stand is provided with illuminating lamp, traffic light device comprises garage's traffic light device and People's Bank of China's traffic light device, two cameras are arranged at respectively a side of garage's traffic light device, described stadimeter device, traffic light device is connected by control circuit with camera, control circuit comprises supply voltage and Voltage stabilizing module, circuit control module, illuminating lamp module and traffic lights module, wherein supply voltage and Voltage stabilizing module are mainly by 220V AC power, transformer, current rectifying and wave filtering circuit, Voltage stabilizing module and control circuit form, 220V AC power is connected in Voltage stabilizing module by transformer and current rectifying and wave filtering circuit successively, in current rectifying and wave filtering circuit, rectification circuit uses single phase bridge type rectifier circu, alternating current becomes direct current after current rectifying and wave filtering circuit, then by capacitor filter, the DC voltage in pulse is become to level and smooth DC voltage, Voltage stabilizing module is connected with control circuit, control circuit respectively with illuminating lamp module, circuit control module is connected with traffic lights module, circuit control module is mainly by button circuit, amplifying circuit, single-chip computer control system, stepping motor control circuit, stepper motor operation circuit, processor and stadimeter the electric circuit constitute, wherein processor respectively with control circuit, button circuit, single-chip computer control system, stadimeter circuit is connected with stepper motor operation circuit, button circuit is connected with single-chip computer control system by amplifying circuit, single-chip computer control system is connected with the driving circuit in traffic lights module with stepping motor control circuit respectively, stepping motor control circuit moves circuit by stepper motor and is connected with stadimeter circuit, traffic lights module is mainly by driving circuit, single-chip microcomputer, traffic lights circuit and camera circuit form, wherein single-chip microcomputer respectively with driving circuit, traffic lights circuit is connected with camera circuit, described illuminating lamp module is mainly comprised of switching power source chip and lighting circuit, wherein switching power source chip is connected with lighting lamp circuit.
The utlity model has following beneficial effect: 1, in straight-through main road or non-crossroad, be not suitable for installing time-controlled traffic light system, in the larger place of some major trunk roads vehicle flowrates, when pedestrian passes through road, very inconvenient, the utility model can be grasped the time that pedestrian passes through well, make the timely saltus step of traffic lights, improve traffic circulation efficiency, particularly, for those action inconvenient patients, old man, this product has guaranteed their safety to a great extent; 2,, night, when no one passes through, the utility model is provided with illuminating lamp module, be equivalent to street lamp, when pedestrian passes through road (straight-through main road or non-crossroad), have the light of illuminating lamp, pedestrian conveniently finds button, makes the hommization more of whole device; 3, the utility model is applicable to straight-through main road or non-crossroad, while being intended to solve pedestrian by zebra stripes, and pedestrian's safety problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of stadimeter device in the utility model, and Fig. 2 is the link block figure of control circuit in the utility model, and Fig. 3 is use constitutional diagram of the present utility model.
Drawing explanation: 1, People's Bank of China's traffic light device, 2, stadimeter device, 3, garage's traffic light device, 4, camera, 5, illuminating lamp, 6, lamp stand, 7, pushbutton switch, 8, stadimeter, 9, stepper motor, 10, objective table.
Embodiment
Describe by reference to the accompanying drawings embodiment in detail.A kind of traffic signal lamp system, mainly by two stadimeter devices 2, two cover traffic light devices and two cameras 4 form, wherein stadimeter device 2 comprises the pushbutton switch 7 being set in turn on lamp stand 6 from top to bottom, stadimeter 8 and stepper motor 9, lamp stand 6 is fixed on the objective table 10 of lower end, in the upper end of lamp stand 6, be provided with illuminating lamp 5, traffic light device comprises garage's traffic light device 3 and People's Bank of China's traffic light device 1, two cameras 4 are arranged at respectively a side of garage's traffic light device 3, described stadimeter device 2, traffic light device is connected by control circuit with camera 4, control circuit comprises supply voltage and Voltage stabilizing module, circuit control module, illuminating lamp module and traffic lights module, wherein supply voltage and Voltage stabilizing module are mainly by 220V AC power, transformer, current rectifying and wave filtering circuit, Voltage stabilizing module and control circuit form, 220V AC power is connected in Voltage stabilizing module by transformer and current rectifying and wave filtering circuit successively, in current rectifying and wave filtering circuit, rectification circuit uses single phase bridge type rectifier circu, alternating current becomes direct current after current rectifying and wave filtering circuit, then by capacitor filter, the DC voltage in pulse is become to level and smooth DC voltage, Voltage stabilizing module is connected with control circuit, control circuit respectively with illuminating lamp module, circuit control module is connected with traffic lights module, circuit control module is mainly by button circuit, amplifying circuit, single-chip computer control system, stepping motor control circuit, stepper motor operation circuit, processor and stadimeter the electric circuit constitute, wherein processor respectively with control circuit, button circuit, single-chip computer control system, stadimeter circuit is connected with stepper motor operation circuit, button circuit is connected with single-chip computer control system by amplifying circuit, single-chip computer control system is connected with the driving circuit in traffic lights module with stepping motor control circuit respectively, stepping motor control circuit moves circuit by stepper motor and is connected with stadimeter circuit, traffic lights module is mainly by driving circuit, single-chip microcomputer, traffic lights circuit and camera circuit form, wherein single-chip microcomputer respectively with driving circuit, traffic lights circuit is connected with camera circuit, described illuminating lamp module is mainly comprised of switching power source chip and lighting circuit, wherein switching power source chip is connected with lighting lamp circuit.
Major function of the present utility model is: under normal circumstances, while pressing the button switch without pedestrian, camera and stadimeter device are closed condition, and Liang Ge garage traffic light device is green light (expression open to traffic), and People's Bank of China's traffic light device is red light.When pedestrian presses the button switch in A district, the saltus step immediately of A group garage's traffic light device is amber light, then saltus step is red light, and the traffic light device saltus step of B group People's Bank of China is green light, and B group garage traffic light device is still green light.The vehicle stop in A track, pedestrian starts to pass through, A organizes rotatable stadia surveying pedestrian from the distance in A group roadside, by control circuit, getting the data that A group stadimeter records imports in processor, get measured maximal value X1, the measured distance of stadimeter 0 wide to the L(road of having a lot of social connections be the width in unidirectional track) between for effective value, calculate pedestrian apart from the distance Y 1 in roadside, by single-chip computer control system comparison pedestrian, apart from the distance Y in roadside and default fixed value road, have a lot of social connections L value relatively, if Y1 >=3/4L, the saltus step immediately of B group garage's traffic light device is amber light, saltus step is red light again, B group People's Bank of China traffic light device becomes red light.Get the minimum value of A group stadia surveying value, calculate pedestrian apart from distance and the 3/4L comparison in roadside, if be greater than 3/4L, the traffic light device saltus step of A group garage is green light, B group People's Bank of China traffic light device becomes green light, the vehicle in A district starts to pass through, otherwise A group garage traffic light device is still red light (otherwise two groups of traffic light devices is all constant).Pedestrian continues to pass through, processor get stadimeter 0 to the data of having a lot of social connections between L, processor is got B and is organized the maximal value X2 that rotatable stadimeter records, calculate pedestrian apart from the distance Y 2 in roadside, during Y2≤1/4L, B group People's Bank of China traffic light device saltus step red light, A group garage traffic light device is still green light, and the saltus step immediately of B group garage's traffic light device is green light.When pedestrian presses the button switch in A district, the saltus step immediately of A group garage's traffic light device is amber light, then saltus step is red light, if B group has again pedestrian to press the button switch in 5s, the saltus step immediately of B group garage's traffic light device is amber light, then saltus step is red light.Now A, B group garage traffic light device is red light, and the red light time of lighting is 15s, and the traffic light device change of Liang Zu People's Bank of China is green light.After 15s, A, B group stadimeter is started working simultaneously, gets the minimum value of A, B group stadimeter, calculates pedestrian apart from the distance in roadside and the L comparison of having a lot of social connections, if there is a > 1/4L, keeping A, B group garage traffic light device is red light.If be all less than 1/4L, the traffic light device saltus step of A, B group garage is green light.Liang Zu People's Bank of China traffic light device becomes red light; Pedestrian's (time of hypothesis is set as 5s) in Preset Time does not press the pushbutton switch of two groups of A, B again, one minute one skilled in the art, again press the button switch invalid (time of hypothesis is set as a minute), this just effectively prevents that pedestrian from constantly pressing the button switch, improves traffic traffic efficiency; Pedestrian presses the button after switch, in situation about not walking if there is pedestrian, or when in road, vehicle is sent out traffic hazard and is trapped in road, surpass the regular hour (time of hypothesis is 3 minutes) to force jump system can force the saltus step of red light device to be green light, in order to avoid affect traffic, to pass through.When pedestrian presses the button switch, camera is started working, and if there is the phenomenon that has car to make a dash across the red light, camera will be captured.When pedestrian passes through road smoothly, camera and stadimeter are closed.
In the utility model, the height of lamp stand is 6-8 rice; the power of street lamp is 250-500W; lamp stand material selection is stainless steel vertical rod; pushbutton switch height is placed in 1.5 meters of of lamp stand; stadimeter be arranged on lamp stand above; 1 meter, height distance ground, the outer of stadimeter is with rigid material protection, in order to avoid lose.Stadimeter device is positioned at roadside, in the zebra stripes position vertical with zebra stripes that keep left.Stadimeter has following functions, and range finding is from 60-80 rice, and stadimeter is laser range finder, has the characteristics such as durable in use, sensitivity height.Traffic light device comprises from top to bottom garage's traffic light device and People's Bank of China's traffic light device successively.Garage's traffic light device is positioned at cross bar middle part, and People's Bank of China's traffic light device is positioned at the middle part of traffic lights vertical rod.The red road lamp device of garage's traffic light device and People's Bank of China is conventional traffic lights, and vertical rod material selection is stainless steel vertical rod, the energy load-bearing 20-40kg of institute, and camera is positioned at the middle part of cross bar, near garage's traffic light device.
Illuminating lamp module: illuminating lamp module is connected with control circuit, street lamp is opened and is controlled by control circuit.On daytime, illuminating lamp is in closed condition, 7 unlatchings in evening, and by single-chip computer control system coding, setting-up time, the height of street lamp vertical rod is 6-8 rice, and the power of street lamp is 250-500W, and vertical rod material selection is stainless steel vertical rod.A switching power source chip is set on lighting lamp circuit, and function is to control the break-make of Power supply.Switching power source chip and control circuit join, interim when round the clock, and control circuit meeting transmission of signal is to switching power source chip, and gauge tap power supply chip opens and closes, thus the break-make realizing.
Supply voltage and Voltage stabilizing module: circuit voltage is changed into the DC voltage of 5V, 12V through power transformer, rectification circuit, filtering circuit, mu balanced circuit by alternating voltage.Rectification circuit uses single phase bridge type rectifier circu, and alternating current becomes direct current after rectification circuit, after rectification, uses capacitor filtering circuit filtering, and the DC voltage of pulsation is become to level and smooth DC voltage.Add the mu balanced circuit being formed by voltage stabilizing diode and current-limiting resistance, Voltage stabilizing module and circuit control module.The voltage of final output is exactly the DC voltage that circuit is used 5V, 12V, so that the voltage of circuit to be provided.Single-chip microcomputer and stepper motor operating voltage are 5V, and traffic lights module operating voltage is 12V, and Voltage stabilizing module is connected with control circuit simultaneously, and control circuit is connected with street lamp module, A group traffic lights module, B group traffic lights module respectively again, control power supply to and.
Circuit control module: before pedestrian presses the button switch, pushbutton switch is in off-state, whole circuit is in conducting state not.While pressing the button switch without pedestrian, camera and stadimeter are closed condition, and Liang Ge garage traffic light device is green light (expression open to traffic), and People's Bank of China's traffic light device is red light.When pressing A group pushbutton switch, signal amplifies signal through amplifying circuit, import in single-chip computer control system, single-chip computer control system is controlled the work of A group stadimeter, spread out of control signal, import A group traffic lights module into, driving circuit is controlled A group camera and is opened, controlling the saltus step immediately of A group garage's traffic light device is amber light, saltus step is red light again, and the traffic light device saltus step of B group People's Bank of China is for being green light by red light saltus step, and B group garage traffic light device is still green light, the vehicle stop in A track, pedestrian starts to pass through.Single-chip computer control system is through stepping motor control circuit control step electric machine rotation, stepping motor control circuit imports the inferior one number time of pulse in processor into, processor calculates the angle θ of rotating stepper motor according to pulse number, the minimum value X recording in conjunction with stadimeter, just can calculate pedestrian apart from the distance in roadside.Pedestrian is apart from distance Y=Xsin θ in roadside.The data that stadimeter records are imported in processor, in processor, write the program of assembly language or C language compilation, by program, the data analysis measuring is judged, the maximum value calculation that processor is obtained measurement data goes out pedestrian and compares apart from the distance Y in roadside and default value, and processor has data selector, single-chip microcomputer and auxiliary circuit thereof to form.If when calculating pedestrian and having a lot of social connections the 3/4L of (width in unidirectional track) apart from distance >=preset value road in roadside, signal imports driving circuit into, driving circuit makes B group garage traffic light device saltus step amber light, then saltus step is red light, and B group People's Bank of China traffic light device becomes red light.Processor can send a signal and import in single-chip computer control system, and single-chip computer control system is controlled B group stadimeter and opened, and B group camera is opened.Processor is got the minimum value of A group stadia surveying value, calculate pedestrian apart from distance and the 3/4L comparison in roadside, if be greater than 3/4L, it is green light that single-chip computer control system is controlled the traffic light device saltus step of A group garage, B group People's Bank of China traffic light device becomes green light, A group camera is closed, otherwise A group garage traffic light device is still red light.Simultaneous processor can send a signal and import in single-chip computer control system, and single-chip computer control system is closed A group stadimeter.When B group stadimeter starts to measure, the data that stadimeter records are imported in processor, processor get stadimeter 0 to the data of having a lot of social connections between L, the maximum value calculation that processor is obtained measurement data goes out people from the distance in B group roadside, compare with the default value L that has a lot of social connections, if during measured distance≤1/4L, show that pedestrian has passed through road smoothly.Driving circuit makes B group garage traffic light device become green light, and B group People's Bank of China traffic light device becomes red light, and B group camera is closed.If pedestrian presses the button switch in B group, traffic light device saltus step principle is identical with A group; Pedestrian presses the button after switch, in situation about not walking if there is pedestrian, or when in road, vehicle is sent out traffic hazard and is trapped in road, surpass regular hour (time of hypothesis is 3 minutes) pressure jump system and can force traffic light device saltus step, red light becomes green light, in order to avoid it is current to affect traffic; When pedestrian presses the button switch in A district, if B group has again pedestrian to press the button switch in 5s, the equal saltus step of A, B group garage's traffic lights is red light, and the red light time of lighting is 15s, and the traffic lights change of Liang Zu People's Bank of China is green light.After 15s, A, B group stadimeter is started working simultaneously, and the minimum value of getting A, B group stadimeter calculates pedestrian apart from the distance Y in roadside and the L comparison of having a lot of social connections, if there is one to be greater than 1/4L, keeping A, B group garage traffic lights is red light.If be all less than 1/4L, the traffic light device saltus step of A, B group garage is green light.Liang Zu People's Bank of China traffic light device becomes red light, when pedestrian presses the button switch, pedestrian's (time of hypothesis is set as 5s) in Preset Time does not press the pushbutton switch of two groups of A, B again, one minute one skilled in the art, again press the button switch invalid (time of hypothesis is set as a minute), this just effectively prevents that pedestrian from constantly pressing the button switch.
Single-chip computer control system: single-chip microcomputer can be selected 51 single-chip microcomputers, single-chip microcomputer operating voltage driving voltage is 5V, adopts the 5V DC-voltage supply of supply voltage after Voltage stabilizing module conversion.Software systems adopt single-chip microcomputer assembly language to write, and single-chip computer control system has following effect: control luminous lamp switch, setting-up time is controlled the illuminating lamp opening time; Control knob switch is invalid, when having pedestrian to press the button switch, again presses the button switch after 5s, and signal is by invalid, and signal can not enter system; Control to force saltus step, if pedestrian presses the button switch, circuit is started working, but pedestrian deliberately rests between road, if surpassed the default time, traffic lights are green light by automatic saltus step; Control traffic lights and control camera switch, when pedestrian presses the button switch, single-chip computer control system sends signal and imports processor into, and processor imports signal in driving circuit into, controls traffic lights and controls camera switch; Control stadimeter, horizontal electric machine rotation.Above function realizes by assembly language or C language compilation.
Stadimeter circuit: stadimeter has following functions, range finding is from 60-80 rice, and stadimeter is laser range finder, has the characteristics such as durable in use, sensitivity height.Laser range finder is to utilize laser the distance of target to be carried out to the instrument of Accurate Determining.Laser range finder penetrates a branch of very thin laser to target when work, the laser beam being reflected by photovalve receiving target, and timer is measured laser beam from being transmitted into the time of reception, calculates the range-to-go from observer; Write the interface routine of Single-chip Controlling stadimeter, realize and control stadimeter switch function.The measured data of stadimeter are imported in processor, and processor only gets 0 to the data of having a lot of social connections between L.
Stepper motor operation circuit: level turns to the stepper motor of a horizontal direction of platform to realize turning function, and rotational angle is 90 degree, by Micro Controller Unit (MCU) driving, thereby realizes start and stop and turns to; Stepper motor can be selected bipolarity three-phase stepper motor, and single-chip microcomputer can be selected 51 single-chip microcomputers, and single-chip microcomputer operating voltage is 5V, adopts the 5V DC-voltage supply of supply voltage after Voltage stabilizing module conversion.The power-up sequence of useful gating pulse quantity, frequency and each phase winding of motor is carried out the rotation of control step motor.Write the interface routine of Single-chip Controlling stepping motors, realize the output function of triangular signal.Stepper motor and single-chip microcomputer are operated in 5V.With single-chip microcomputer, in IO interface, with 3 I/0 lines, stepping motor is carried out to control step motor, at this moment, RA0, the RAI of I/O mouth, the three-phase of RA2 control step motor for single-chip microcomputer.Driving method editor, stepper motor uses special-purpose stepping motor driver, and it is comprised of pulse generation control module, power drive unit, protected location etc.Driver element and stepping motor direct-coupling.The principle of work of stepper motor steering controling circuit module is that when pedestrian presses the button, control signal is delivered in single-chip computer control system, by single-chip computer control system Driving Stepping Motor; The steering controling signal of single-chip computer control system, respectively successively to the pulse current of certain hour on stepper motor, stepper motor just rotatably gets up; By the number of times of gating pulse electric current, angle that just can control step motor steering, by the cycle of control wave, the angular velocity of control step motor, the angular velocity of default stepper motor is 0.5rad/s (90-degree rotation per second), make the stepper motor an angle of 90 degrees that swings back and forth, stepper motor be take the ray parallel with zebra stripes as reference position, and swinging back and forth is once one-period; By changing the order to pulse current, can realize the control to turning to.Software systems adopt single-chip microcomputer assembly language to write, by designing main subroutine, control step electric machine rotation.Control circuit imports the inferior one number time of pulse in processor into, and processor calculates the angle θ of rotating stepper motor according to pulse number, and the minimum value X recording in conjunction with stadimeter just can calculate pedestrian apart from the distance in roadside.Pedestrian is apart from distance Y=Xsin θ in roadside.
Traffic lights module: traffic lights are conventional traffic lights, comprises garage's traffic lights and People's Bank of China's traffic lights two parts.Traffic light device comprises from top to bottom garage's traffic lights successively, People's Bank of China's traffic lights.Garage's traffic lights are positioned at cross bar middle part, and People's Bank of China's traffic lights are positioned at the middle part of red street lamp vertical rod.The red street lamp of garage's traffic lights and People's Bank of China is conventional traffic lights.People's Bank of China's traffic lights are comprised of red, green bicolored light, and its implication is similar to the implication of belisha beacon signal, during green light, permit pedestrian and pass through crossing; During when red, forbid that pedestrian enters crossing.On red light minute surface, there is people's image of standing, on green light face, have people's image of a walking.And when red light will become green light, blinking red lamp is two seconds, to remind pedestrian.When green light becomes red light, green light flicker two seconds.
Camera: the focal length of camera is mixed up, and the position of aiming at stop line arranges.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420274906.8U CN203894945U (en) | 2014-05-28 | 2014-05-28 | Traffic signal lamp system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420274906.8U CN203894945U (en) | 2014-05-28 | 2014-05-28 | Traffic signal lamp system |
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| CN203894945U true CN203894945U (en) | 2014-10-22 |
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| CN201420274906.8U Expired - Lifetime CN203894945U (en) | 2014-05-28 | 2014-05-28 | Traffic signal lamp system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971525A (en) * | 2014-05-28 | 2014-08-06 | 河南师范大学 | Traffic light system |
| CN104794920A (en) * | 2015-03-04 | 2015-07-22 | 句容市万福达工艺品厂 | Sidewalk traffic light based on solar energy |
| CN113724512A (en) * | 2021-08-27 | 2021-11-30 | 江苏尤特斯新技术有限公司 | Holographic traffic signal lamp system |
-
2014
- 2014-05-28 CN CN201420274906.8U patent/CN203894945U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971525A (en) * | 2014-05-28 | 2014-08-06 | 河南师范大学 | Traffic light system |
| CN104794920A (en) * | 2015-03-04 | 2015-07-22 | 句容市万福达工艺品厂 | Sidewalk traffic light based on solar energy |
| CN113724512A (en) * | 2021-08-27 | 2021-11-30 | 江苏尤特斯新技术有限公司 | Holographic traffic signal lamp system |
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