Urban traffic management and control system based on internet of things technology
Technical Field
The invention relates to the field of traffic control systems, in particular to an urban traffic control system based on the technology of the Internet of things.
Background
The urban traffic control system is a comprehensive traffic system which effectively integrates an intelligent sensing technology, an information network technology, a communication transmission technology, a data processing technology and the like represented by the Internet of things, the Internet and cloud computing, is applied to the whole traffic system and plays a role in a larger space-time range. The urban traffic management and control system is an organic whole for coordinating, controlling and managing urban traffic by urban traffic management departments by applying technologies such as traffic management, traffic engineering, traffic control, computers, electronic information and the like, and basically comprises the following contents: a traffic signal control system, a traffic image monitoring system, a traffic information guidance system, a traffic management information system, a traffic emergency rescue system, and the like.
Along with the progress of science and technology, the intelligent degree of the urban traffic management and control system is also continuously improved, rapid communication contact can be established among roads, vehicles and drivers, timely and effective road information is provided for the drivers and traffic managers, urban road traffic pressure is effectively relieved, the time of the drivers is saved, and the workload of the traffic managers is reduced.
In the actual management and control process of urban roads, the main monitoring means of the urban traffic management and control system are mostly arranged near traffic lights, the monitoring in the middle of road sections of long roads, roads above and below bridges and viaduct roads is not perfect, if road blockage caused by road accidents and other reasons occurs on the road section of the road, the urban traffic management and control system cannot perceive the road blockage at the early stage of the blockage, the urban traffic management and control system cannot effectively assist in guiding and dredging, further, the multiple accidents of the accidents and the spreading of the blockage are easily caused, and the timeliness management and control performance of the urban traffic management and control system is reduced.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide an urban traffic control system based on the internet of things technology, which can perform signal transmission and auxiliary control on initial congestion generated on long roads, roads above and below a bridge, viaduct roads and other roads through the cooperation of a road partition and a congestion monitor, effectively avoid the development of subsequent accidents and the continuous spread of congestion, improve the safety of drivers on the roads, relieve the pressure of urban traffic, and effectively improve the functionality and control effectiveness of the urban traffic control system.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A city traffic control system based on the Internet of things technology comprises a city traffic control system and a road partition, wherein a plurality of blocking monitors are mounted on the road partition, each blocking monitor comprises a mounting base plate, one side, away from the road partition, of the mounting base plate is fixedly connected with a triggering protective shell, one end, away from the mounting base plate, of each triggering protective shell is fixedly provided with a ray sensor, the inner wall, away from the mounting base plate, of each triggering protective shell is fixedly connected with a temperature-isolating telescopic sleeve, a triggering assembly matched with the ray sensor is arranged in each temperature-isolating telescopic sleeve, one end, close to the mounting base plate, of each temperature-isolating telescopic sleeve is fixedly connected with an alarm triggering rod, and one end, close to the road partition, of the mounting base plate is fixedly connected with a triggering box matched with the alarm triggering rod;
the urban traffic management and control system comprises an urban traffic management and control processing unit arranged in an urban traffic management and control platform, wherein the input end of the urban traffic management and control processing unit is connected with a road monitoring unit, the road monitoring unit is in signal connection with a jam monitor through an urban network, and through the cooperation of a road partition and the jam monitor, signal transmission and auxiliary management and control are carried out on initial-stage jams generated on road sections such as long roads, bridges, upper and lower roads, viaduct roads and the like, so that the development of follow-up accidents and continuous spreading of jams are effectively avoided, the safety of drivers on the road sections is improved, the pressure of urban traffic is relieved, and the functionality and management and control effectiveness of the urban traffic management and control system are effectively improved.
Further, the road monitoring unit is including control data processing module, control data processing module's output is connected with ray induction module, ray induction module's output passes through wire and ray inductor electric connection, control data processing module's input is connected with and blocks up trigger module, block up trigger module's input and pass through wire and trigger box electric connection, through the setting of road monitoring unit, can in time discover and produce signal feedback at the road jam initial stage, supplementary traffic managers monitors the road state, reduces traffic managers's work burden, improves urban traffic management and control system's management and control scope.
Further, road jube upper end fixed mounting has and blocks up watch-dog matched with warning guide lamp, monitoring data processing module's output still is connected with and blocks up warning module, the output that blocks up warning module passes through wire and warning guide lamp electric connection, and the warning guide lamp can send alarm signal for the follow-up driver that gets into this road, supervises the driver to slow down and go slowly in advance, and then when effectively improving driver in-process security, still effectively avoided the recurrence of accident, reduced economic loss.
Further, trigger the subassembly including the automatically controlled board of response, separate the temperature telescope tube and keep away from mounting plate one side inner wall fixedly connected with and ray inductor matched with response automatically controlled board, the automatically controlled board of response is close to a plurality of hot bag posts of mounting plate one end fixedly connected with and elasticity heating wire, and the hot bag post that expands is located corresponding elasticity heating wire inboard, the hot bag post that expands is close to mounting plate one end and separates the interior wall fixed connection of temperature telescope tube, the hot bag post intussuseption is filled with heat sensitive gas, warms up through elasticity heating wire to the week side of hot bag post for the hot bag post that expands produces the temperature change, can effectively change the rapid reaction of ray inductor, effectively improves the validity that the alarm triggered, reduces triggering error.
Further, trigger the box and be close to mounting plate one end and seted up alarm trigger groove, alarm trigger groove keeps away from mounting plate one side inner wall fixedly connected with response contact, trigger protective case and mounting plate on all set up with alarm trigger bar matched with trigger the spout, alarm trigger bar is close to mounting plate one end fixedly connected with and responds to contact matched with and triggers the sheetmetal, and when the flexible cover of thermal expansion bag cylindricality transform produces deformation separating, alarm trigger bar constantly is close to alarm trigger groove, and the back is contacted with response contact to trigger the sheetmetal, makes the jam watch-dog send the jam signal to urban traffic management and control system, effectively assists urban traffic management and control system management traffic, improves management and control efficiency.
Furthermore, the temperature-isolating telescopic sleeve is close to one end of the installation bottom plate and is fixedly connected with a balanced air bag sleeve, the balanced air bag sleeve is sleeved on the outer side of the alarm trigger rod and is in sliding connection with the alarm trigger rod, and a plurality of elastic supporting strips are fixedly connected in the balanced air bag sleeve.
Further, trigger the box and be close to mounting plate one end and seted up the declination trigger slot, and the declination trigger slot cooperatees with balanced gasbag cover, and the declination trigger slot can restrict balanced gasbag cover's stroke, removes its linkage with the warning trigger bar, is convenient for trigger the retest of ray inductor to do not adopt automatically controlled mode not only effectively to reduce the preparation cost who blocks up the watch-dog, still reduced road monitoring unit's the operation degree of difficulty, when increasing and block up the watch-dog functionality, still improve the economic benefits who blocks up the watch-dog.
Further, the ray induction ware is including ray induction board, it is connected with ray induction board to trigger the protective case and keep away from mounting plate one end, a pair of ray induction hole has been seted up on the ray induction board, the ray induction board is close to mounting plate one end fixedly connected with a pair ofly and ray induction hole matched with signal transmission pole, and signal transmission pole is close to mounting plate one end and extends to trigger in the protective case and trigger the subassembly and cooperate, signal transmission pole is kept away from mounting plate one end and is rotated and be connected with the ray induction group head that is located the ray induction hole, the downthehole fixedly connected with of ray induction is located the ray induction group head and keeps away from the protection casing of mounting plate one side.
Further, ray response downthehole wall fixedly connected with organizes first matched with declination arc bag with ray response, declination arc bag outer end fixedly connected with rather than the declination trachea of switch-on mutually, the declination trachea other end runs through the trigger protective case to switch-on mutually with balanced gasbag cover, the declination trachea is the shrink hose, and the cooperation of declination trigger tank, balanced gasbag cover and declination arc bag can constantly make trigger assembly when the ray inductor moves, can detect the accuracy of signal transmission through the rotation to ray response group head, increases the function of corner retest, has reduced the probability of misreporting, has improved the functionality of blockking up the watch-dog.
Furthermore, ray induction group is overhead to be provided with ray emitter, ray receiver and ray induction circuit, ray induction circuit's output and signal transmission pole electric connection.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme is through the cooperation of road jube and jam watch-dog, to with long road section, the bridge about the initial stage that produces on road segments such as road and overpass road block up carry out signal transmission and supplementary management and control, effectively avoid the development of follow-up accident and the continuation of blockking up to stretch, when improving this highway section driver's security, still alleviated urban traffic's pressure, effectively improve urban traffic management and control system's functionality and management and control validity.
(2) Through the setting of road monitoring unit, can in time discover and produce signal feedback at the road jam initial stage, supplementary traffic management personnel monitor the road state, reduce traffic management personnel's work burden, improve urban traffic management and control system's management and control scope.
(3) The warning guide lamp can send out alarm signal for the follow-up driver that gets into this road, supervises the driver to slow down slowly to go in advance, and then when effectively improving driver's in-process security, has still effectively avoided the recurrence of accident, reduces economic loss.
(4) When the flexible cover that separates the temperature constantly receives the change of thermal expansion bag cylindricality to produce deformation, alarm trigger bar constantly is close to alarm trigger groove, until triggering the sheetmetal and contacting the back with the response contact for block up the watch-dog and send jam signal to urban traffic management and control system, effectively supplementary urban traffic management and control system management traffic improves management and control efficiency.
(5) The deflection angle triggering groove can limit the stroke of the balanced air bag sleeve, the linkage between the balanced air bag sleeve and the alarm triggering rod is eliminated, retest triggering of the ray sensor is facilitated, an electric control mode is not adopted, the manufacturing cost of the blocking monitor is effectively reduced, the operation difficulty of a road monitoring unit is reduced, the functionality of the blocking monitor is increased, and the economic benefit of the blocking monitor is improved.
(6) The cooperation of declination trigger slot, balanced gasbag cover and declination arc bag can be when the ray inductor constantly makes trigger assembly move, can be through the rotation to ray induction group head come the accuracy that detects signal transmission, increases the function of corner retest, has reduced the probability of misreading, has improved the functionality of blockking up the watch-dog.
Drawings
FIG. 1 is a schematic structural view of an urban traffic control system of the present invention in cooperation with a traffic jam monitor;
FIG. 2 is a schematic diagram of the control flow structure of the urban traffic control system according to the present invention;
FIG. 3 is a schematic axial view of a jam monitor according to the present invention;
FIG. 4 is a schematic diagram of an explosive configuration of a jam monitor according to the present invention;
FIG. 5 is a schematic view of the internal axial structure of the occlusion monitor of the present invention;
FIG. 6 is a schematic top cross-sectional view of a plugging monitor according to the present invention;
FIG. 7 is a schematic view of the structure of FIG. 6 at A in accordance with the present invention;
FIG. 8 is a schematic diagram of the structure of FIG. 6 at B in accordance with the present invention;
fig. 9 is a schematic structural diagram of a road congestion sensing change process of the congestion monitor of the present invention.
The reference numbers in the figures illustrate:
the device comprises a road partition fence 1, a warning guide lamp 101, a mounting base plate 2, a triggering protective shell 3, a thermal insulation telescopic sleeve 301, a sensing electric control plate 302, a thermal expansion bag column 303, an elastic heating wire 304, a triggering box 4, a deflection angle triggering groove 401, an alarm triggering groove 402, a ray sensor 5, a protective cover 501, a ray sensing group head 502, a signal transmission rod 503, a balanced air bag sleeve 6, an elastic supporting strip 601, an alarm triggering rod 7, an arc deflection angle bag 8 and a deflection angle air pipe 801.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-9, an urban traffic control system based on internet of things technology comprises an urban traffic control system and a road partition 1, wherein a plurality of blocking monitors are installed on the road partition 1, each blocking monitor comprises an installation bottom plate 2, one side, away from the road partition 1, of the installation bottom plate 2 is fixedly connected with a trigger protective shell 3, one end, away from the installation bottom plate 2, of the trigger protective shell 3 is fixedly provided with a ray sensor 5, the inner wall, away from the installation bottom plate 2, of the trigger protective shell 3 is fixedly connected with a temperature-isolating telescopic sleeve 301, a trigger assembly matched with the ray sensor 5 is arranged in the temperature-isolating telescopic sleeve 301, one end, close to the installation bottom plate 2, of the temperature-isolating telescopic sleeve 301 is fixedly connected with an alarm trigger rod 7, and one end, close to the road partition 1, of the installation bottom plate 2 is fixedly connected with a trigger box 4 matched with the alarm trigger rod 7;
referring to fig. 1 and 2, the urban traffic control system includes an urban traffic control processing unit disposed in an urban traffic control platform, an input end of the urban traffic control processing unit is connected with a road monitoring unit, the road monitoring unit is in signal connection with a congestion monitor through an urban network, and by cooperation of a road partition 1 and the congestion monitor, signal transmission and auxiliary control are performed on initial congestion generated on road segments such as long roads, roads above and below bridges, viaduct roads and the like, development of follow-up accidents and continuous spreading of congestion are effectively avoided, safety of drivers on the road segments is improved, pressure of urban traffic is relieved, and functionality and control effectiveness of the urban traffic control system are effectively improved.
Referring to fig. 2, the road monitoring unit includes a monitoring data processing module, an output end of the monitoring data processing module is connected with a ray sensing module, an output end of the ray sensing module is electrically connected with a ray sensor 5 through a wire, an input end of the monitoring data processing module is connected with a jam triggering module, an input end of the jam triggering module is electrically connected with a triggering box 4 through a wire, and by setting the road monitoring unit, the road monitoring unit can timely discover and generate signal feedback at the initial stage of road jam, assist the traffic manager to monitor the road state, reduce the workload of the traffic manager, and improve the control range of the urban traffic control system.
Please refer to fig. 1 and fig. 2, the upper end of the road partition 1 is fixedly provided with a warning guide lamp 101 matched with the jam monitor, the output end of the monitoring data processing module is further connected with a jam warning module, the output end of the jam warning module is electrically connected with the warning guide lamp 101 through a wire, the warning guide lamp 101 can send out an alarm signal for a subsequent driver entering the road, and the driver is urged to slow down and go slowly in advance, so that the safety of the driver in the driving process is effectively improved, the reoccurrence of accidents is effectively avoided, and the economic loss is reduced.
Referring to fig. 3-9, the triggering assembly includes an induction electric control board 302, an inner wall of the side of the thermal insulation sheath 301 far from the mounting base plate 2 is fixedly connected with the induction electric control board 302 matched with the radiation sensor 5, one end of the induction electric control board 302 close to the mounting base plate 2 is fixedly connected with a plurality of thermal expansion cell columns 303 and elastic heating wires 304, the thermal expansion cell columns 303 are located inside the corresponding elastic heating wires 304, one end of the thermal expansion cell column 303 close to the mounting base plate 2 is fixedly connected with the inner wall of the thermal insulation sheath 301, the thermal expansion cell columns 303 are filled with heat sensitive gas, and the peripheral sides of the thermal expansion cell columns 303 are heated by the elastic heating wires 304, so that the thermal expansion cell columns 303 generate temperature change expansion, thereby effectively converting the rapid reaction of the radiation sensor 5, effectively improving the effectiveness of alarm triggering, and reducing the triggering error.
Referring to fig. 3-9, an alarm triggering groove 402 is formed in one end, close to the mounting base plate 2, of the triggering box 4, a sensing contact piece is fixedly connected to the inner wall of one side, away from the mounting base plate 2, of the alarm triggering groove 402, trigger sliding grooves matched with the alarm triggering rod 7 are formed in the triggering protective shell 3 and the mounting base plate 2, a triggering metal sheet matched with the sensing contact piece is fixedly connected to one end, close to the mounting base plate 2, of the alarm triggering rod 7, when the thermal insulation telescopic sleeve 301 is continuously deformed by the deformation of the thermal expansion bag column 303, the alarm triggering rod 7 is continuously close to the alarm triggering groove 402 until the triggering metal sheet is contacted with the sensing contact piece, so that the jam monitor sends a jam signal to the urban traffic control system, the urban traffic control system is effectively assisted to manage traffic, and the control efficiency is improved.
Referring to fig. 3-9, the temperature-insulating telescopic sleeve 301 is fixedly connected to an equalizing airbag cover 6 near one end of the installation base plate 2, the equalizing airbag cover 6 is sleeved outside the alarm triggering rod 7 and is slidably connected to the alarm triggering rod 7, and a plurality of elastic stays 601 are fixedly connected to the equalizing airbag cover 6.
Referring to fig. 3-9, one end of the trigger box 4 close to the installation bottom plate 2 is provided with a deflection angle trigger slot 401, the deflection angle trigger slot 401 is matched with the balanced airbag sleeve 6, the deflection angle trigger slot 401 can limit the stroke of the balanced airbag sleeve 6, the linkage between the balanced airbag sleeve and the alarm trigger rod 7 is eliminated, the retest trigger of the ray sensor 5 is facilitated, an electric control mode is not adopted, the preparation cost of the blockage monitor is effectively reduced, the operation difficulty of a road monitoring unit is reduced, the functionality of the blockage monitor is increased, and the economic benefit of the blockage monitor is improved.
Referring to fig. 3-9, the radiation sensor 5 includes a radiation sensing plate, one end of the trigger protective shell 3 far away from the installation bottom plate 2 is connected with the radiation sensing plate, the radiation sensing plate is provided with a pair of radiation sensing holes, one end of the radiation sensing plate near the installation bottom plate 2 is fixedly connected with a pair of signal transmission rods 503 matched with the radiation sensing holes, one end of the signal transmission rods 503 near the installation bottom plate 2 extends into the trigger protective shell 3 to be matched with the trigger assembly, one end of the signal transmission rods 503 far away from the installation bottom plate 2 is rotatably connected with a radiation sensing group head 502 located in the radiation sensing holes, and the radiation sensing holes are fixedly connected with a protective cover 501 located on one side of the radiation sensing group head 502 far away from the installation bottom plate 2.
Referring to fig. 3-9, the inner wall of the ray sensing hole is fixedly connected with a deflection angle arc-shaped bag 8 matched with the ray sensing group head 502, the outer end of the deflection angle arc-shaped bag 8 is fixedly connected with a deflection angle air pipe 801 communicated with the deflection angle arc-shaped bag 8, the other end of the deflection angle air pipe 801 penetrates through the trigger protective shell 3 and is communicated with the balance air bag sleeve 6, the deflection angle air pipe 801 is a contraction hose, and the deflection angle trigger groove 401, the balance air bag sleeve 6 and the deflection angle arc-shaped bag 8 are matched with each other, so that when the ray sensor 5 continuously enables the trigger assembly to act, the accuracy of signal transmission can be detected through the rotation of the ray sensing group head 502, the function of corner retest is increased, the probability of misreport is reduced, and the functionality of blocking the monitor is improved.
Referring to fig. 3-9, the ray sensing head 502 is provided with a ray emitter, a ray receiver and a ray sensing circuit, and an output end of the ray sensing circuit is electrically connected to the signal transmission rod 503.
Referring to fig. 1-9, after the jam monitor is installed on the road partition 1, the road partition 1 is not limited to a road guardrail, but may also be a road component such as a bridge pier, the urban traffic control processing unit controls the start of the road monitoring unit, so that the monitoring data processing module receives the monitoring command and triggers the ray sensing module to start, so that the ray receiver on the ray sensing group head 502 continuously emits rays, when the road is not blocked, the ray receiver on the ray sensing group head 502 can receive the ray reflected by the vehicle with short time due to the continuous running of the vehicle, so that the sensing electric control board 302 cannot generate enough current, and therefore the elastic heating wire 304 cannot generate heat to act on the thermal expansion cell column 303, further, the heat expansion bag column 303 cannot act, and the trigger box 4 cannot receive a trigger signal, so that the road monitoring unit cannot feed back a signal to the urban traffic control processing unit;
when the initial blockage condition is generated on the road sections such as a long road, a road on or off a bridge, a viaduct road and the like, the ray emitted by the ray emitter on the ray sensing group head 502 is received by the ray receiver through the reflection of a vehicle body, and the ray receiver has continuity in receiving due to the congestion of the road, at the moment, the ray sensing circuit transmits a receiving signal to the signal transmission rod 503, so that the sensing electric control plate 302 receives the continuous current signal to control the continuous temperature rise of the elastic heating wire 304, the thermal expansion bag column 303 is heated and expanded to drive the thermal insulation expansion sleeve 301 to generate deformation displacement, the alarm trigger rod 7 and the balance air bag sleeve 6 move towards the trigger box 4 together, and in the continuous moving process of the alarm trigger rod 7 and the balance air bag sleeve 6, the balance air bag sleeve 6 firstly contacts with the deflection angle trigger groove 401 and is blocked by the deflection angle trigger groove 401, during the continuous movement process of the thermal insulation telescopic sleeve 301, the equalization air bag sleeve 6 is compressed, so that the gas in the equalization air bag sleeve enters the deflection angle arc-shaped bag 8 through the deflection angle air pipe 801, the volume of the deflection angle arc-shaped bag 8 is increased, a deflection force is generated on the ray induction group head 502, the ray induction group head 502 sends rays to generate angle deflection, at this time, if a signal received by a ray receiver on the ray induction group head 502 is blocked, no subsequent congestion of the vehicle is indicated at this time, congestion is relieved, so that the current on the induction electric control board 302 is blocked, the thermal expansion bag column 303 does not continue to deform, and therefore the trigger box 4 is not triggered, so that a road monitoring unit does not feed back a signal to the urban traffic control processing unit, and the cooperation of the deflection angle trigger groove 401, the equalization air bag sleeve 6 and the deflection angle arc-shaped bag 8 can enable the trigger assembly to act continuously when the ray inductor 5 continues to act (as an angle alpha in fig. 9), the accuracy of signal transmission can be detected by rotating the ray induction group head 502, the function of corner retest is added, the probability of false alarm is reduced, the functionality of a blockage monitor is improved, blockage is judged, and the consumption of police force is reduced;
if the signal received by the ray receiver on the ray sensing group head 502 continues, which indicates that the vehicle is continuously jammed in the following process, the jam continues, the heat expansion bag column 303 continuously deforms under the action of the elastic heating wire 304 until the alarm trigger rod 7 moves into the alarm trigger groove 402, the trigger metal sheet contacts with the sensing contact sheet, so that the jam trigger module receives the trigger signal and transmits the trigger signal to the monitoring data processing module, the monitoring data processing module processes the data and feeds the data back to the urban traffic control processing unit, so that the urban traffic control processing unit sends a signal to a traffic manager through the urban traffic control platform, the traffic manager goes to the jam release module, and the monitoring data processing module sends a signal to the jam warning module at the same time, so that the jam warning module switches on the warning guide lamp 101, so that the warning guide lamp 101 can send a warning signal to a driver who enters the road in the following process, the driver is supervised to slow down and go slowly in advance, so that the safety of the driver in the driving process is effectively improved, meanwhile, the recurrence of accidents is effectively avoided, and the economic loss is reduced; through the cooperation of road jube 1 and jam watch-dog, to with long section road, the bridge about the road and the overpass road highway on the highway section of production early stage block up carry out signal transmission and supplementary management and control, effectively avoid the development of follow-up accident and the continuation of blockking up to spread, when improving this highway section driver's security, still alleviated urban traffic's pressure, effectively improved urban traffic management and control system's functionality and management and control validity.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.