CN1880759A - Automatic power generation and supply system by using vehicle speed reducing plate or speed reducing belt - Google Patents
Automatic power generation and supply system by using vehicle speed reducing plate or speed reducing belt Download PDFInfo
- Publication number
- CN1880759A CN1880759A CNA200510077172XA CN200510077172A CN1880759A CN 1880759 A CN1880759 A CN 1880759A CN A200510077172X A CNA200510077172X A CN A200510077172XA CN 200510077172 A CN200510077172 A CN 200510077172A CN 1880759 A CN1880759 A CN 1880759A
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- Prior art keywords
- deceleration strip
- airbrake
- speed reducing
- energy
- deceleration
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- 238000010248 power generation Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000004146 energy storage Methods 0.000 claims abstract description 17
- 230000033001 locomotion Effects 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000008092 positive effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000994 depressogenic effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003203 everyday effect Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an automatic power generation and supply system by utilizing a vehicle speed reducing plate or a speed reducing belt, which structurally comprises: a speed reduction plate or belt, a non-linear spring, a transmission, a generator and a housing. The transmission device comprises a rack rod, a rack at the tail end of the rack rod, a ratchet wheel meshed with the rack, a gear pair and a generator, wherein the top end of the rack rod is movably connected with the lower part of the speed reducing plate or the speed reducing belt through a hinge, the gear pair and the generator are coaxially arranged with the ratchet wheel. The upper part of the shell is a speed-reducing plate or speed-reducing belt embedding cavity, the middle part of the shell is a rack bar motion guide cavity, and the lower part of the shell is a power generation energy storage bin. The invention has the following advantages and positive effects: the energy consumed by the vehicle when passing through the speed reducing plate can be effectively utilized, and the energy is reasonably utilized in a mode of converting the energy into electric energy, so that a large amount of clean energy is provided for some electric places. Because the elastic system is additionally arranged below the speed reducing plate, the vehicle can pass through the speed reducing plate more smoothly, and the riding comfort of the vehicle and the service life of the vehicle are improved.
Description
Technical field
The present invention relates to a kind of kinetic energy generating of airbrake or deceleration strip being depressed when utilizing vehicle, store simultaneously and the automatic power generating and power supply system of supply of electrical energy, belong to clean energy resource and produce and supply system through airbrake or deceleration strip.
Background technique
At present, in many public arenas as the gateway at market, sub-district, school, station, large parking lot, expressway tol lcollection place etc., in order to reduce traffic accident, the restriction car speed, the most employing is provided with some airbrakes or deceleration brings the travelling speed that reduces vehicle on the road surface.Common airbrake or deceleration strip all are to be fixed on the road surface, though vehicle when crossing airbrake or deceleration strip, can reach the purpose of deceleration, have but consumed the extra energy of part.With one heavily about 2, the sedan car of 000kg is an example, when estimating airbrake that it passes through the high about 10CM of a slice or deceleration strip in ideal conditions roughly, will consume 2 approximately, the energy of 000J is considered the thermal efficiency and the mechanical efficiency of automobile, general automobile will consume 7, the primary energy of 000J.Therefore, though traditional airbrake or deceleration strip can play the purpose that makes car deceleration, some unnecessary energy waste have but been brought.
Summary of the invention
The purpose of this invention is to provide a kind of deceleration flap or deceleration strip automatic power generating and power supply system of utilizing, can either realize limiting vehicle speed to solve, the kinetic energy generating that can rationally efficiently utilize automobile to depress again to pass to airbrake in the process of airbrake or deceleration strip, simultaneously electrical power storage is also supplied with the usefulness of illumination and other work, can also be incorporated into the power networks with civil power, the electric energy that sends directly is conveyed into the problem of electrical network by contravariant equipment.
The technical solution adopted for the present invention to solve the technical problems is that its structure comprises:
Airbrake or deceleration strip, it be one be embedded in ground and top to be the camber part above ground level, road vehicles speed reducer in the ground is fixed in by the spring activity in the bottom;
Nonlinear spring, its upper end is inconsistent with the bottom of airbrake or deceleration strip, and lower end and ground fix, and this nonlinear spring is that several fixed interval are between airbrake or deceleration strip and ground;
Transmission device, mainly comprise the tooth bar of the ratch realizing flexibly connecting and be provided with in vertical direction by hinge and airbrake or deceleration strip bottom in the top, ratch end or transmission fan tooth, the gearwheel that is provided with the ratchet of tooth bar or the engagement of transmission fan tooth, with coaxial ratchet, with the small gear of gearwheel engagement;
Housing, top are that airbrake or deceleration strip are inlayed the chamber, and the middle part is ratch motion guide chamber, and the bottom is the power-generation energy-storage storehouse;
Generator, the axle of this motor is gone up the coaxial described small gear that is fixed with.
Aforesaid deceleration flap or the deceleration strip automatic power generating and power supply system of utilizing, be provided with controller and energy storage device in the power-generation energy-storage storehouse of described housing, this controller and energy storage device comprise the input end that is connected with generator, the output terminal that is connected with consumer and are connected city's electrical network end.
Aforesaid deceleration flap or the deceleration strip automatic power generating and power supply system of utilizing, the top airbrake of described housing or deceleration strip are inlayed the chamber and are had a positive stop lug boss structure, and spring is fixed on the stationary plane of positive stop lug boss below.
Utilize deceleration flap or deceleration strip automatic power generating and power supply system as mentioned above, below an airbrake or deceleration strip, be fixed with the power generation system that a cover or some covers are formed by the transmission of ratch, ratch end fan tooth, the gearwheel that is provided with the ratchet of transmission fan tooth engagement, with coaxial ratchet, with the small gear and the generator of gearwheel engagement.
The present invention has following advantage and good effect:
1, the energy that is consumed in the time of can effectively utilizing vehicle by airbrake, and rationally utilize this part energy by the mode that is translated into electric energy, for some electricity consumption places provide a large amount of clean energy resourcies.By example the benefit that it can bring is described: the place is an example with a certain expressway tol lcollection in Beijing, daily by 50,000 on vehicle, car amount counterpoise is 8,000kg is provided with 5 airbrakes among the present invention before each charging aperture, then every day, utilizable total energy can reach 2 * 10
9The energy of J; fully take into account the mechanical efficiency of system and the transformation efficiency of energy; at least can obtain the electric energy of 500KWh every day only; not only reduced 182 every year like this for country; the power consumption of 500KW h; but also create a large amount of clean energy resourcies, in energy today of crisis day by day, meaning is very great.
2, below airbrake, installed elastic system additional, more smooth-going when making vehicle pass through airbrake, increased the travelling comfort of vehicle ride and the working life of automobile.
3, native system adopts the method for full three-dimensional finite element structural analysis to be optimized design on mechanical structure, and sound construction is reliable, is guaranteeing under the non-maintaining situation more than 10 years working life.
4, in transmission system, adopt ratchet, can guarantee when rebounding under the effect of airbrake at spring force, not have movement interference, simultaneously can also guarantee not move between each airbrake interference phenomenon, according to different designing requirements, the gear tooth type ratchet can be adopted, also the friction type ratchet can be adopted.Gear pair in the transmission system can adopt cylindrical gears, planetary pinion etc. according to different designing requirements.Spring in the native system adopts nonlinear spring, at supporting steel plate during near limiting stopper, can very fast its speed of reduction, and reduce to impact, thereby prolong the working life of system.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a specific embodiment structural representation of the present invention.
Embodiment
Concrete structure of the present invention and mode of execution can be referring to accompanying drawings.Among Fig. 1: the 1st, ratch, the 2nd, hinge, the 3rd, airbrake or deceleration strip, the 4th, nonlinear spring, the 5th, gearwheel, the 6th, ratchet, the 7th, small gear, the 8th, generator, the 9th, power supply output terminal, the 10th, motor shaft, the 11st, connect city's electrical network end, the 12nd, controller and storage battery, the 13rd, ratchet, gearwheel stationary axle, the 14th, housing, the 15th, positive stop lug boss.Airbrake or deceleration strip 3 are embedded in the upper chambers of housing 14, and upper chambers makes airbrake or deceleration strip 3 downward minimum this boss places that are limited in for having positive stop lug boss 15 structures.The lower end surface of fixing spring 4 is lower than this boss.The upper end of ratch 1 links to each other with the bottom of airbrake or deceleration strip 3 by hinge 2.The tooth bar of the lower end of this ratch 1 or driving cog fan and 6 engagements of a ratchet.Other has a gearwheel 5 by axle 13 and ratchet 6 coaxial fixedlying connected.A small gear 7 and described gearwheel 5 engagements are arranged again.Described small gear 7 is fixed on the axle of generator 8.The input end that is provided with controller and energy storage device 12 in the power-generation energy-storage storehouse of generator 8 by lead and housing is connected.The output terminal 9 of controller and energy storage device 12 connects consumer, as street lamp etc.Controller and energy storage device 12 comprise that also connects city's electrical network end 11.Described gear adopts the spline linkage structure with being connected of axle.
Among Fig. 2, provide three cover ratch, the ratchet example structure that install an airbrake or deceleration strip 3 and below thereof.Be provided with a gearwheel 5 with three coaxial ratchets, the small gear 7 that meshes with gearwheel 5 is installed on the generator shaft 10.The present invention also can distinguish coaxial fixedly gearwheel and drive generator work separately on each ratchet.
When vehicle passes through airbrake or deceleration strip, it is depressed, give generator with the transmission device that airbrake is formed with hinged ratch and other members with transmission of power, generator for electricity generation produces electric energy, controller is controlled power storage in storage battery by control program, when useful some demand of consumer, controller is reasonably distributed to consumer with electric energy.The reserve of electricity of while controller monitoring storage battery, when finding that energy storage is not enough, controller is responsible for switching the civil power AC network and is given the native system equipment charge, keeps normal and stable operation; When energy storage device sensor indication energy storage is more than needed, realize generating electricity by way of merging two or more grid systems by the inverter circuit in the controller.
In conjunction with Fig. 1 and Fig. 2, illustrate that the concrete working principle of native system is: airbrake 3 surfaces are provided with supporting steel plate and are bolted together, and the effect of supporting steel plate is to strengthen airbrake and be connected ratch 1, and supporting steel plate is connected with ratch 1 usefulness hinge; Ratch 1 often meshes with the outer ring of ratchet 6, and the inner ring of ratchet 6 constitutes transmission by spline and the splined shaft 13 that is positioned at bearing on the casing; Normal meshed gears pair 5,7 constitutes transmission with splined shaft 13 and generator shaft 10 respectively by spline, and generator shaft 10 drives generator 8 rotations and generating.
The motion of mechanism process is such: when vehicle is depressed airbrake 3, the ratch 1 that airbrake and supporting steel plate promote and supporting steel plate is hinged moves downward, while compressive non-linearity spring 4, ratch 1 drives ratchet 6 rotations, ratchet 6 drives splined shaft 13 rotations by spline, splined shaft 13 drives normal meshed gears pair 5,7 again and rotates, thereby drives generator 8 rotary electrifications; After the vehicle process, under the effect of spring, ratch 1 return, this moment, the Internal and external cycle of ratchet 6 did not constitute transmission, thereby can avoid movement interference.The depression distance of positive stop lug boss 15 restriction airbrakes is damaged by excess compression to prevent spring within limits, and spring 4 adopts nonlinear spring, at supporting steel plate during near positive stop lug boss 15, can very fast its speed of reduction, reduce to impact, thereby prolong the working life of system.
At circuit part; controller and storage battery 12 are sealed in a casing the inside; to realize protection; itself and generator 8; civil power AC network 11 links to each other with consumer; the high efficiency storage of electric energy that controller 12 sends by control program and control circuit control generator; and the power consumption of reasonable distribution consumer; controller is to battery monitor simultaneously; if when finding that the storage battery electric energy is not enough; start 11 pairs of extra electric energy supplement of native system of civil power AC network; the assurance system works is normal, if when finding that the energy storage device electric energy is more than needed, realizes generating electricity by way of merging two or more grid systems with Ac 11 by the contravariant equipment of self.
Claims (4)
1, a kind of deceleration flap or deceleration strip automatic power generating and power supply system of utilizing is characterized in that its structure comprises:
Airbrake or deceleration strip, it be one be embedded in ground and top to be the camber part above ground level, road vehicles speed reducer in the ground is fixed in by the spring activity in the bottom;
Nonlinear spring, its upper end is inconsistent with the bottom of airbrake or deceleration strip, and lower end and ground fix, and this nonlinear spring is that several fixed interval are between airbrake or deceleration strip and ground;
Transmission device, mainly comprise the tooth bar of the ratch realizing flexibly connecting and be provided with in vertical direction by hinge and airbrake or deceleration strip bottom in the top, ratch end or transmission fan tooth, the gearwheel that is provided with the ratchet of tooth bar or the engagement of transmission fan tooth, with coaxial ratchet, with the small gear of gearwheel engagement;
Housing, top are that airbrake or deceleration strip are inlayed the chamber, and the middle part is ratch motion guide chamber, and the bottom is the power-generation energy-storage storehouse;
Generator, the axle of this motor is gone up the coaxial described small gear that is fixed with.
2, deceleration flap or the deceleration strip automatic power generating and power supply system of utilizing as claimed in claim 1, it is characterized in that: be provided with controller and energy storage device in the power-generation energy-storage storehouse of described housing, this controller and energy storage device comprise the input end that is connected with generator, the output terminal that is connected with consumer and are connected city's electrical network end.
3, deceleration flap or the deceleration strip automatic power generating and power supply system of utilizing as claimed in claim 1, it is characterized in that: the top airbrake of described housing or deceleration strip are inlayed the chamber and are had a positive stop lug boss structure, and spring is fixed on the stationary plane of positive stop lug boss below.
4, deceleration flap or the deceleration strip automatic power generating and power supply system of utilizing as claimed in claim 1 is characterized in that: be fixed with the power generation system that a cover or some covers are formed by the transmission of ratch, ratch end fan tooth, the gearwheel that is provided with the ratchet of transmission fan tooth engagement, with coaxial ratchet, with the small gear and the generator of gearwheel engagement below an airbrake or deceleration strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510077172XA CN1880759A (en) | 2005-06-16 | 2005-06-16 | Automatic power generation and supply system by using vehicle speed reducing plate or speed reducing belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510077172XA CN1880759A (en) | 2005-06-16 | 2005-06-16 | Automatic power generation and supply system by using vehicle speed reducing plate or speed reducing belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1880759A true CN1880759A (en) | 2006-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200510077172XA Pending CN1880759A (en) | 2005-06-16 | 2005-06-16 | Automatic power generation and supply system by using vehicle speed reducing plate or speed reducing belt |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900639A (en) * | 2012-11-02 | 2013-01-30 | 济南大学 | Stamping power generation device |
| CN102979046A (en) * | 2012-08-21 | 2013-03-20 | 张美玲 | Power generation deceleration strip |
| CN103184989A (en) * | 2013-02-28 | 2013-07-03 | 南京邮电大学 | Piezoelectric power generation system for underground garage |
| CN103414302A (en) * | 2013-08-16 | 2013-11-27 | 钟群明 | Traffic signal light indicating system |
| CN103498896A (en) * | 2013-10-17 | 2014-01-08 | 谭宏伟 | Gravity power generation device and transmission structure thereof |
| CN103925175A (en) * | 2014-05-06 | 2014-07-16 | 大连交通大学 | Running vehicle gravity power generating device |
| CN103994040A (en) * | 2013-02-19 | 2014-08-20 | 盛梁兴 | Gravity power generation |
| CN104454412A (en) * | 2014-11-25 | 2015-03-25 | 肖黄飞 | Deceleration strip electricity generating and illuminating device |
| CN104763602A (en) * | 2015-03-09 | 2015-07-08 | 于亮平 | Hydraulic energy collection and conversion device |
| CN104912752A (en) * | 2015-06-01 | 2015-09-16 | 杜桂生 | Gravity power generation device |
| CN106194622A (en) * | 2016-08-16 | 2016-12-07 | 江苏大学 | A kind of mechanical reduction band TRT |
| CN109599929A (en) * | 2019-01-25 | 2019-04-09 | 邢台职业技术学院 | A kind of underground garage descending buffering and deceleration strip power generation, lighting system |
| CN109642555A (en) * | 2016-05-20 | 2019-04-16 | 株式会社方特世界能源 | Utilize the power generator of vehicular load |
| CN109914285A (en) * | 2019-04-29 | 2019-06-21 | 西南交通大学 | One kind can self-powered luminescent speed bump |
| CN110203246A (en) * | 2019-06-19 | 2019-09-06 | 西南交通大学 | A kind of deceleration top energy recycle device based on gear and rack teeth mechanism |
| CN108556608B (en) * | 2018-03-30 | 2020-03-24 | 珠海骏驰科技有限公司 | New energy automobile convenient to battery is changed with energy recuperation function |
| CN112030801A (en) * | 2019-06-03 | 2020-12-04 | 沈阳航空航天大学 | Self-generating deceleration strip |
| CN112483339A (en) * | 2020-12-01 | 2021-03-12 | 西安交通大学 | Novel energy recovery power generation device for highway deceleration strip |
| CN112983771A (en) * | 2021-03-08 | 2021-06-18 | 江苏大学 | Intelligent power generation deceleration strip |
| CN113235479A (en) * | 2021-06-17 | 2021-08-10 | 中汽创智科技有限公司 | Road deceleration strip device |
| CN113789735A (en) * | 2021-09-13 | 2021-12-14 | 西南大学 | Intelligent traffic deceleration early warning device |
| CN114438921A (en) * | 2021-12-30 | 2022-05-06 | 南京赛康交通安全科技有限公司 | Road self-luminous traffic sign control system and method for night driving |
-
2005
- 2005-06-16 CN CNA200510077172XA patent/CN1880759A/en active Pending
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979046A (en) * | 2012-08-21 | 2013-03-20 | 张美玲 | Power generation deceleration strip |
| CN102900639A (en) * | 2012-11-02 | 2013-01-30 | 济南大学 | Stamping power generation device |
| CN103994040A (en) * | 2013-02-19 | 2014-08-20 | 盛梁兴 | Gravity power generation |
| CN103184989A (en) * | 2013-02-28 | 2013-07-03 | 南京邮电大学 | Piezoelectric power generation system for underground garage |
| CN105048711A (en) * | 2013-08-16 | 2015-11-11 | 钟群明 | Compact type green power generation mechanism |
| CN103414302A (en) * | 2013-08-16 | 2013-11-27 | 钟群明 | Traffic signal light indicating system |
| CN105207412A (en) * | 2013-08-16 | 2015-12-30 | 钟群明 | Self-generating traffic signal lamp |
| CN105046855A (en) * | 2013-08-16 | 2015-11-11 | 钟群明 | Signal light indication device |
| CN105048712A (en) * | 2013-08-16 | 2015-11-11 | 钟群明 | High-efficiency power generation device |
| CN103498896A (en) * | 2013-10-17 | 2014-01-08 | 谭宏伟 | Gravity power generation device and transmission structure thereof |
| CN103925175A (en) * | 2014-05-06 | 2014-07-16 | 大连交通大学 | Running vehicle gravity power generating device |
| CN103925175B (en) * | 2014-05-06 | 2016-04-27 | 大连交通大学 | River stream automobile gravity electricity generating device |
| CN104454412A (en) * | 2014-11-25 | 2015-03-25 | 肖黄飞 | Deceleration strip electricity generating and illuminating device |
| CN104763602A (en) * | 2015-03-09 | 2015-07-08 | 于亮平 | Hydraulic energy collection and conversion device |
| CN104912752A (en) * | 2015-06-01 | 2015-09-16 | 杜桂生 | Gravity power generation device |
| CN109642555A (en) * | 2016-05-20 | 2019-04-16 | 株式会社方特世界能源 | Utilize the power generator of vehicular load |
| CN106194622A (en) * | 2016-08-16 | 2016-12-07 | 江苏大学 | A kind of mechanical reduction band TRT |
| CN108556608B (en) * | 2018-03-30 | 2020-03-24 | 珠海骏驰科技有限公司 | New energy automobile convenient to battery is changed with energy recuperation function |
| CN109599929A (en) * | 2019-01-25 | 2019-04-09 | 邢台职业技术学院 | A kind of underground garage descending buffering and deceleration strip power generation, lighting system |
| CN109914285A (en) * | 2019-04-29 | 2019-06-21 | 西南交通大学 | One kind can self-powered luminescent speed bump |
| CN112030801A (en) * | 2019-06-03 | 2020-12-04 | 沈阳航空航天大学 | Self-generating deceleration strip |
| CN110203246A (en) * | 2019-06-19 | 2019-09-06 | 西南交通大学 | A kind of deceleration top energy recycle device based on gear and rack teeth mechanism |
| CN112483339A (en) * | 2020-12-01 | 2021-03-12 | 西安交通大学 | Novel energy recovery power generation device for highway deceleration strip |
| CN112983771A (en) * | 2021-03-08 | 2021-06-18 | 江苏大学 | Intelligent power generation deceleration strip |
| CN112983771B (en) * | 2021-03-08 | 2024-05-14 | 江苏大学 | Intelligent power generation deceleration strip |
| CN113235479A (en) * | 2021-06-17 | 2021-08-10 | 中汽创智科技有限公司 | Road deceleration strip device |
| CN113789735A (en) * | 2021-09-13 | 2021-12-14 | 西南大学 | Intelligent traffic deceleration early warning device |
| CN114438921A (en) * | 2021-12-30 | 2022-05-06 | 南京赛康交通安全科技有限公司 | Road self-luminous traffic sign control system and method for night driving |
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