Traffic signal lamp with camera convenient to disassemble and automatic control system of traffic signal lamp

Abstract

The utility model relates to the technical field of traffic signal lamps, in particular to a traffic signal lamp with a camera convenient to disassemble and an automatic control system thereof. A traffic signal lamp with cameras convenient to disassemble comprises a signal lamp holder, a plurality of signal lamps, camera assemblies detachably arranged on the signal lamp holder at intervals and an automatic control module arranged on the signal lamp holder, and each camera assembly comprises a base, an adjusting piece, a steering base and a spherical camera. According to the traffic signal lamp, the automatic control module is arranged on the traffic signal lamp, road information collected by the camera assembly is received, and the current road condition is compared and analyzed, so that the time length of the corresponding signal lamp is controlled, and automatic control is realized; and the arranged annular electrified magnet and the iron supporting rod attract each other, so that the stability of the camera assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to traffic signal light technical field, especially is traffic signal light and automatic control system of a kind of convenient to detach camera of it. BACKGROUND

[0002] Traffic signal light is the signal light of command traffic operation, generally by red light, green light, yellow light composition.Red light indicates prohibition of traffic, green light indicates permission of traffic, and yellow light indicates warning.

[0003] The existing traffic light control system has the following problems: the vehicle has passed in the driving direction, or there is only one or two vehicles, but the green light time is still long, and the people and vehicles in other directions waste time to continue waiting. There are many vehicles in the driving direction, and there are few vehicles at the next intersection, so the green light time is not enough, which leads to congestion. Therefore, in the actual use process, the fixed green light time often leads to increased traffic congestion. In the actual use process, when the signal light is automatically controlled, many cameras are needed for image acquisition, and the steps of installing and replacing the cameras are complicated and need to be screwed repeatedly. SUMMARY

[0004] Other features and advantages of the present utility model will be set forth in the following description of the utility model, and some of them will become apparent from the description, or will be learned by practicing the present utility model. The purpose and other advantages of the present utility model can be achieved and obtained by the structure specifically pointed out in the specification and other drawings.

[0005] The utility model aims at overcoming the above-mentioned defects, providing a traffic signal light and automatic control system convenient to detach camera, by setting automatic control module on traffic signal light, receiving the road information collected by camera assembly, comparing and analyzing the current road conditions, and controlling the length of time of the corresponding signal light, realizing automatic control. The camera assembly is installed on the support rod, and the adjusting member with elasticity is arranged on the camera assembly. The spring is pressed and contracted to adapt to different support rod widths. The annular power magnet and the iron support rod are attracted to each other, which increases the stability of the camera assembly and makes it difficult to separate from the support rod.

[0006] The utility model provides a traffic signal light convenient to detach camera, which comprises a signal light frame, a plurality of signal lights, a camera assembly arranged on the signal light frame in a spaced and detachable manner, and an automatic control module arranged on the signal light frame. The camera assembly and the automatic control module are detachably connected. The automatic control module is electrically connected with the signal light and controls the switching of the signal light.

[0007] The camera assembly comprises a base, an adjusting piece, a steering seat and a spherical camera, the base is provided with a groove on the bottom side, the adjusting piece is arranged in the groove, the base is provided with the steering seat above, the steering seat is arranged with the spherical camera.

[0008] The automatic control module arranged on the signal lamp frame collects the road conditions of the current driving direction through the camera assembly, if there are few vehicles in the current direction and no one on the sidewalk of the next intersection, the green light time in the driving direction is shortened, so as to facilitate other direction vehicles and pedestrians to pass through the intersection quickly, if there are many vehicles in the driving direction and few vehicles at the next intersection, the green light time is prolonged, so as to facilitate the vehicles in the driving direction and the pedestrians at the next intersection to pass through the intersection, the priority of the sidewalk light control and the vehicle traffic light control can be selected, so as to give priority to the sidewalk traffic light when necessary, so as to avoid causing congestion, thereby solving the problem that the existing traffic light control system often has fixed green light time, which causes traffic congestion, the detachable camera is arranged, so that it can be replaced in time when it is damaged, the adjusting piece arranged on the base is elastic, the support rod with a certain width can be clamped, so that the camera assembly can be fixed on the support rod with different widths, the structure composed of the steering seat and the internal components of the spherical camera can refer to the prior art, and the function of 360-degree rotation is realized, which will not be described here.

[0009] In some embodiments, the lower edge of the movable plate is provided with an arc-shaped bending. The arc-shaped bending is arranged, so that when the camera assembly is installed, the support rod is more easily slid into the groove and compresses the spring.

[0010] In some embodiments, the base is provided with a containing cavity, the containing cavity is provided with a ring-shaped electromagnet, and the bottom side of the ring-shaped electromagnet is communicated with the groove. The containing cavity is used for containing necessary components during the operation of the camera, such as a control circuit board and a connecting wire, and correspondingly, necessary components required for the operation of the ring-shaped electromagnet are also placed in the containing cavity, such as an AC-DC conversion chip and a connecting wire. It should be understood that the specific structure of the camera and the ring-shaped electromagnet can refer to the prior art, and the internal structure is not improved in the utility model, so that the technical solution cannot be realized due to the lack of necessary components. The bottom side is communicated with the groove, so as to adsorb the support rod clamped in the groove, so as to increase the stability, wind resistance and shock resistance.

[0011] In some embodiments, the base is further provided with a ventilation hole above, and the ventilation hole is communicated with the outside and the containing cavity. Since the electromagnetic force generated during the operation of the ring-shaped electromagnet generates heat, the ventilation hole is additionally provided, so that the containing cavity is communicated with the outside, and the heat is dissipated.

[0012] In some embodiments, the steering seat is provided with threads outside, a rain cover is screwed with the threads, the side of the rain cover is provided with an inclined setting, and the diameter of the bottom ring of the rain cover is greater than the diameter of the base. Because the air holes are arranged upward, rainwater can easily enter the inside of the assembly on rainy days, damaging the operation of the internal hardware, so the screwed rain cover is arranged above the air hole, which blocks the lower base, avoids wetting, and at the same time, heat can be transmitted through the gap between the base and the rain cover, without affecting normal heat dissipation.

[0013] In some embodiments, the base is provided with a switch, which is electrically connected with the annular electromagnet and controls the opening and closing of the annular electromagnet. The switch is arranged to control the opening and closing of the annular electromagnet. During disassembly, the annular magnet does not need suction, so the annular magnet is turned off, the camera assembly is pulled up by the staff, and the new camera assembly is installed. When the camera assembly is pressed downward, the support rod slides into the groove, and the annular electromagnet is turned on to generate magnetic adsorption, thereby completing the installation.

[0014] In some embodiments, the base is provided with a through hole on the side, the through hole is communicated with the accommodating cavity, the support rod is provided with a wire hole, the wire hole is provided with a sheltered eave on the upper side, the sheltered eave is provided with a clamping hole on the upper side. The through hole on the side of the base and the wire hole on the support rod are reserved connection holes for connecting wires. The operation of the camera assembly and the signal lamp needs to be powered on. The wire is pulled out from the support rod and connected to the inside of the camera assembly, so that it can operate normally. The sheltered eave is arranged to prevent rainwater from falling into the inside of the support rod, and the clamping hole is arranged to fix the position of the wire.

[0015] An automatic control system of a traffic signal lamp with a camera assembly convenient to disassemble, comprising

[0016] A camera acquisition module is provided with a camera assembly and is used for acquiring vehicle and pedestrian information on the road;

[0017] An automatic control module is used for receiving information of the camera acquisition module and making comparison;

[0018] A signal lamp module is used for receiving signals from the automatic control module and switching red, green and yellow signals.

[0019] In some embodiments, the camera acquisition module comprises a sidewalk camera and a motor vehicle lane camera, the automatic control module comprises a contrast analysis module and a database module, after the camera acquisition module acquires sidewalk pedestrian information and vehicle information on the motor vehicle lane, the information is input into the contrast analysis module, the contrast analysis module calls the information stored in the database module for comparison to determine whether it is crowded at present, thereby controlling the signal lamp module to switch the length of time of the three-color signal.

[0020] In some embodiments, the contrast analysis module further comprises a special vehicle identification module and a lane marking identification module, after the camera acquisition module acquires vehicle information and lane line information, the information is input into the contrast analysis module, the contrast analysis module identifies that a special vehicle arrives at the intersection and controls the signal lamp module to immediately switch the passing signal.

[0021] By adopting the above technical scheme, the beneficial effects of the utility model are:

[0022] The utility model discloses a traffic signal lamp with automatic control module, receives the road information that camera assembly gathers, compares and analyzes the current road condition to the length of time of the corresponding signal lamp, realizes automatic control, installs the camera assembly on the setting elastic adjusting piece, through the pressing and contraction of spring, makes it adapt to different support rod width, the annular power magnet and the ferrous support rod of setting are attracted to each other, increase the stability of the camera assembly, make it not easy to separate from the support rod.

[0023] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.

[0024] It is certain that the purposes of the utility model and other purposes will become more apparent after the description of the preferred embodiments of the utility model with various drawings and drawings.

[0025] In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, one or more preferred embodiments are described below, and the drawings are shown, and the detailed description is as follows. BRIEF DESCRIPTION OF DRAWINGS

[0026] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation of the utility model.

[0027] In the drawings, the same parts use the same reference signs, and the drawings are schematic and are not necessarily drawn according to the actual scale.

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description only represent one or some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0029] Figure 1 The traffic signal lamp overall structure schematic view in some embodiments of the present application;

[0030] Figure 2 The camera assembly and support rod connection schematic view in some embodiments of the present application;

[0031] Figure 3 The camera assembly internal structure cutaway schematic view in some embodiments of the present application;

[0032] Figure 4 The automatic control system running flow schematic view in some embodiments of the present application.

[0033] Main drawing mark explanation:

[0034] 1, support rod;

[0035] 2, signal lamp;

[0036] 3, camera assembly;

[0037] 31, base;

[0038] 32, adjusting piece;

[0039] 321, movable plate; 322, spring;

[0040] 33, steering seat;

[0041] 34, spherical camera;

[0042] 35, groove;

[0043] 36, containing cavity;

[0044] 37, annular electromagnet;

[0045] 38, air hole;

[0046] 39, rain cover;

[0047] 4, automatic control module;

[0048] 5, shielding eave. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further described in detail below in combination with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, but not used to limit the utility model.

[0050] In addition, in the description of the utility model, it should be understood that the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" are based on the directions or positional relationships shown in the drawings, and are only used for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0051] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integrated; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship of two elements. However, it is specified that direct connection means that the connection between the two main bodies does not pass through a transition structure to establish a connection relationship, but only connects through a connecting structure to form a whole. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0052] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Referring to Figures 1-2 , Figure 1 The whole structure of the traffic signal in some embodiments of the utility model is shown in the figure. Figure 2 The connection between the camera assembly and the support rod in some embodiments of the utility model is shown in the figure.

[0054] According to some embodiments of the utility model, the utility model provides a traffic signal lamp 2 convenient to dismantle camera 2, including signal lamp frame, a plurality of signal lamp 2, interval and detachable setting on the camera assembly 3 of signal lamp frame and setting on the automatic control module 4 of signal lamp frame, the camera assembly 3 with the automatic control module 4 detachable connection, the automatic control module 4 with signal lamp 2 electric connection and control signal lamp 2 switching;

[0055] The camera assembly 3 includes a base 31, an adjusting piece 32, a steering seat 33 and a spherical camera 34, the bottom side of the base 31 is provided with a groove 35, the adjusting piece 32 is arranged in the groove 35, the steering seat 33 is arranged above the base 31, and the spherical camera 34 is clamped in the steering seat 33; the adjusting piece 32 includes a movable plate 321 and a spring 322, one end of the spring 322 is connected with one side wall of the groove 35, the other end of the spring 322 is connected with the movable plate 321, and the movable plate 321 is located in the groove 35, and the signal lamp frame includes a supporting rod 1, and the supporting rod 1 is clamped in the groove 35 through the adjusting piece 32.

[0056] The automatic control module 4 arranged on the signal lamp frame collects the road conditions in the current driving direction through the camera assembly 3, shortens the green light time in the driving direction if there are few vehicles in the current direction and no one on the sidewalk of the next intersection, facilitates other direction vehicles to pass through the intersection quickly in advance, extends the green light time when there are many vehicles in the driving direction and few vehicles at the next intersection, facilitates the vehicles in the driving direction and the pedestrians at the next intersection to pass through the intersection, the sidewalk light control and the vehicle traffic light control can select the priority, facilitates the sidewalk traffic light to be the leading one when necessary, avoids causing congestion, thereby solve the problem that the existing traffic light control system often appears fixed green light time, causes traffic congestion to be increased, the detachable camera is convenient to replace in time when it is damaged, the adjusting piece 32 arranged on the base 31 is elastic, can be clamped into the supporting rod 1 of a certain width, thereby adapt to different supporting rod 1 width and fix the camera assembly 3 on it, the structure of the steering seat 33 and the internal components of the spherical camera 34 can refer to the prior art, realize the function of 360-degree rotation, which will not be expanded here.

[0057] The lower edge of the movable plate 321 is provided with an arc-shaped bend. The arc-shaped bend is arranged, so that when the camera assembly 3 is installed, the supporting rod 1 is more easily slid into the groove 35 and compresses the spring 322.

[0058] The base 31 is provided with a through hole on the side, the through hole is communicated with the accommodating cavity 36, the support rod 1 is provided with an electric wire hole, the electric wire hole is provided with a sheltered eave 5 on the upper side, the sheltered eave 5 is outwardly inclinedly arranged, and the sheltered eave 5 is provided with a clamping hole. The through hole on the side of the base 31 and the electric wire hole on the support rod 1 are reserved connection holes for connecting electric wires, the camera assembly 3 and the signal lamp 2 need to be powered, the electric wires are pulled out from the support rod 1 and connected to the inside of the camera assembly 3, so that the camera assembly 3 and the signal lamp 2 can normally operate, the sheltered eave 5 is arranged to prevent rainwater from falling into the inside of the support rod 1, and the clamping hole is used for fixing the position of the electric wire.

[0059] Referring to Figure 3 , Figure 3 It is the internal structure cutaway schematic view of the camera assembly in some embodiments of the utility model.

[0060] According to some embodiments of the utility model, optionally, the base 31 is provided with an accommodating cavity 36, the accommodating cavity 36 is provided with a ring-shaped electromagnet 37, and the bottom side of the ring-shaped electromagnet 37 is communicated with the recess 35. The accommodating cavity 36 is arranged to accommodate necessary components during the operation of the camera, such as control circuit board and connecting electric wire, and the accommodating cavity 36 is also arranged with necessary components required for the operation of the ring-shaped electromagnet 37, such as AC-DC conversion chip and connecting electric wire. It should be understood that the specific structure of the camera and the ring-shaped electromagnet 37 can refer to the prior art, and the internal structure is not improved in the utility model, so that the technical scheme cannot be realized due to the lack of necessary components. The bottom side is communicated with the recess 35 to adsorb the support rod 1 clamped in the recess 35, so that the stability is increased, and the wind resistance and shock resistance are increased.

[0061] The base 31 is further provided with a ventilation hole 38, and the ventilation hole 38 is communicated with the outside and the accommodating cavity 36. Because the electromagnetic force generated during the operation of the ring-shaped electromagnet 37 generates heat, the ventilation hole 38 is additionally arranged to communicate the inside and the outside of the accommodating cavity 36, and the heat is dissipated.

[0062] The outer side of the steering seat 33 is provided with a thread, the rain cover 39 is screwed with the thread, the side of the rain cover 39 is inclinedly arranged, and the bottom ring diameter of the rain cover 39 is greater than the diameter of the base 31. Because the ventilation hole 38 is arranged upward, rainwater is easy to enter the inside of the assembly in rainy days, and the internal hardware is damaged during operation. Therefore, the rain cover 39 screwed above the ventilation hole 38 is arranged to shield the lower base 31, so as to avoid wetting, and the heat can be transmitted through the gap between the base 31 and the rain cover 39, without affecting the normal heat dissipation.

[0063] The base 31 is provided with a switch which is electrically connected with the annular electromagnet 37 and controls the opening and closing of the annular electromagnet 37. The switch is arranged to control the opening and closing of the annular electromagnet 37, and during the dismounting process, the annular electromagnet does not need suction, so the annular electromagnet is closed, the staff pulls up the camera assembly 3 to dismount, and when the new camera assembly 3 is installed, the camera assembly 3 is pressed down to make the supporting rod 1 slide into the groove 35, then the annular electromagnet 37 is opened to generate magnetic adsorption, so that the installation is completed.

[0064] Referring to Figure 4 , Figure 4 It is an automatic control system running process schematic diagram in some embodiments of the utility model.

[0065] According to some embodiments of the utility model, optionally, the utility model further provides an automatic control system of traffic signal lamp 2 convenient for dismounting camera, comprising

[0066] The camera acquisition module is provided with a camera assembly 3 and is used for acquiring vehicle and pedestrian information on the road;

[0067] The automatic control module 4 is used for receiving information of the camera acquisition module and making comparison;

[0068] The signal lamp module is used for receiving signals from the automatic control module 4 and switching red, green and yellow three-color signals.

[0069] The camera acquisition module comprises a sidewalk camera and a motor vehicle lane camera, the automatic control module 4 comprises a comparative analysis module and a database module, after the camera acquisition module acquires sidewalk pedestrian information and vehicle information on the motor vehicle lane, the information is input into the comparative analysis module, the comparative analysis module calls information stored in the database module to make comparison, judges whether the current is crowded or not, thereby controlling the signal lamp module to switch the time length of three-color signals.

[0070] The comparative analysis module further comprises a special vehicle identification module and a lane marking line identification module, after the camera acquisition module acquires vehicle information and lane line information, the information is input into the comparative analysis module, the comparative analysis module identifies that the special vehicle arrives at the intersection and controls the signal lamp module to switch the traffic signal immediately.

[0071] By arranging the special vehicle identification module and the lane marking line identification module, when in use, the special vehicle and the special vehicle driving lane passing through the lane are identified, when the special vehicle drives to the intersection, the green light time is prolonged or the green light is adjusted as soon as possible, so that the effect of facilitating the special vehicle to pass through the signal lamp intersection quickly and safely is achieved.

[0072] By setting the automatic control module and camera acquisition module to judge the road condition, when the vehicle in the driving direction has passed or is less, if the pedestrian in the next intersection has passed, the green light time in the driving direction is shortened, so that the vehicles in other directions can pass the intersection quickly, when the vehicle in the driving direction is more and the vehicle in the next intersection is less, the green light time is prolonged, so that the vehicle in the driving direction and the pedestrian in the next intersection can pass the intersection, the pedestrian traffic light control and the vehicle traffic light control can select the priority, so that the pedestrian traffic light can be the leading one when necessary, so as to avoid congestion, thereby solving the problem that the existing traffic light control system often has fixed green light time, which leads to increased traffic congestion.

[0073] It should be understood that the embodiments disclosed in the present application are not limited to the specific processing steps or materials disclosed herein, but should extend to such equivalent alternatives as understood by those skilled in the related art. It should also be understood that the terms used herein are for the purpose of describing specific embodiments only and do not mean limitation.

[0074] The "embodiments" mentioned in the specification mean that the specific features or characteristics described in combination with the embodiments are included in at least one embodiment of the present application. Therefore, the phrase or "embodiments" appearing throughout the specification does not necessarily mean the same embodiment.

[0075] In addition, the described features or characteristics can be combined into one or more embodiments in any other suitable way. In the above description, some specific details such as thickness, number, etc. are provided to provide a comprehensive understanding of the embodiments of the present application. However, those skilled in the related art will understand that the present application can be implemented without the above one or more specific details or can be implemented by using other methods, components, materials, etc.

Claims

1. A traffic light with an easily detachable camera, characterized in that, The system includes a traffic light frame, several traffic lights, a camera assembly that is spaced apart and detachably mounted on the traffic light frame, and an automatic control module mounted on the traffic light frame. The camera assembly and the automatic control module are detachably connected, and the automatic control module is electrically connected to the traffic lights and controls the switching of the traffic lights. The camera assembly includes a base, an adjusting component, a steering seat, and a spherical camera. The base has a groove on its bottom side, and the adjusting component is disposed in the groove. The steering seat is disposed on top of the base, and the spherical camera is held in the steering seat. The adjusting component includes a movable plate and a spring. One end of the spring is connected to a side wall of the groove, and the other end of the spring is connected to the movable plate, which is located in the groove. The signal light bracket includes a support rod, which is held in place in the groove by the adjusting component.

2. The traffic light with an easily detachable camera according to claim 1, characterized in that, The lower edge of the movable board has an arc-shaped bend.

3. The traffic light with an easily detachable camera according to claim 1, characterized in that, The base has a receiving cavity, and a ring electromagnet is installed inside the receiving cavity. The bottom side of the ring electromagnet is connected to the groove.

4. The traffic light with an easily detachable camera according to claim 3, characterized in that, The base is also provided with a vent hole, which connects the outside to the receiving cavity.

5. The traffic light with an easily detachable camera according to claim 1, characterized in that, The steering seat has a thread on its outer side, and a rain cover is screwed onto the steering seat through the thread. The rain cover is inclined on its side and the diameter of the bottom ring of the rain cover is larger than the diameter of the base.

6. The traffic light with an easily detachable camera according to claim 3, characterized in that, The base is equipped with a switch, which is electrically connected to the annular electromagnet and controls the opening and closing of the annular electromagnet.

7. The traffic light with an easily detachable camera according to claim 3, characterized in that, The base has a through hole on its side, which communicates with the receiving cavity. The support rod has an electrical wire hole, and a shielding eave is provided on the upper side of the electrical wire hole. The shielding eave is inclined outward and has a locking hole.

8. An automated control system for traffic lights with easily detachable cameras, characterized in that, include The camera acquisition module is equipped with a camera component and is used to collect information about vehicles and pedestrians on the road. An automatic control module is used to receive information from the camera acquisition module and make comparisons. The signal light module is used to receive signals from the automatic control module and switch between red, green, and yellow signals.

9. The automated control system for traffic lights with easily detachable cameras according to claim 8, characterized in that, The camera acquisition module includes a pedestrian camera and a vehicle lane camera. The automatic control module includes a comparison analysis module and a database module. After the camera acquisition module collects pedestrian information and vehicle information in the vehicle lane, it inputs the information into the comparison analysis module. The comparison analysis module calls the information stored in the database module for comparison to determine whether there is congestion, thereby controlling the duration of the traffic light module switching the three-color signal.

10. The automated control system for traffic lights with easily detachable cameras according to claim 9, characterized in that, The comparison and analysis module also includes a special vehicle recognition module and a lane marking recognition module. After the camera acquisition module collects vehicle information and lane line information, it is input into the comparison and analysis module. The comparison and analysis module identifies special vehicles arriving at the intersection and controls the traffic light module to immediately switch the traffic signal.

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