CN107731008B - Trail self-adaptive adjusting device and method - Google Patents
Trail self-adaptive adjusting device and method Download PDFInfo
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- CN107731008B CN107731008B CN201711154901.6A CN201711154901A CN107731008B CN 107731008 B CN107731008 B CN 107731008B CN 201711154901 A CN201711154901 A CN 201711154901A CN 107731008 B CN107731008 B CN 107731008B
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- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
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- G08G1/161—Decentralised systems, e.g. inter-vehicle communication
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Abstract
The invention provides a trail self-adaptive adjusting device and method, and relates to the field of road traffic. When the vehicle distance information is smaller than a pre-stored current standard trail parameter, calculating a trail adjustment parameter, wherein the trail adjustment parameter is smaller than the pre-stored current standard trail parameter, and the trail adjustment parameter is smaller than the pre-stored current standard trail parameter; and controlling an induction lamp system to comprise Z1 groups of induction lamps which are arranged at equal intervals and are related to the position information to be lightened according to the trail adjustment parameters. The trail self-adaptive adjusting device and the trail self-adaptive adjusting method can self-adaptively adjust the lighting number of the induction lamps according to the current vehicle distance information, and the interval distance between the induction lamps is unchanged, so that trail adjusting parameters are shortened in a self-adaptive mode by reducing the lighting number of the induction lamps, the adjusted trail length is smaller than the driving interval distance, the 'tail connection' phenomenon is eliminated, the warning effect of the induction lamps is improved, and traffic accidents are reduced.
Description
Technical Field
The invention relates to the field of road traffic, in particular to a trail self-adaptive adjusting device and method.
Background
When a vehicle runs on a highway at a high height, if the visibility of the weather is low, the vehicle running ahead is easy to collide, and the trail is an anti-collision early warning technology applied to a road traffic environment, namely, when the vehicle runs through a certain position, an induction lamp at the current position of the vehicle and an induction lamp in the rear direction are lightened to remind the vehicle running behind to carefully and slowly run, so that traffic accidents can be prevented to a certain extent.
In the prior art, the trail forming mode is that a vehicle detector is used for positioning the position of a vehicle, then a lighting signal is sent to a backward fixed group induction lamp through a communication link, and the continuous distance formed by the lighted induction lamps is the 'trail'. When the vehicle reaches the next vehicle detector position, the new vehicle detector is positioned as a starting point, the induction lamp lighting signal is sent out in a grouping mode again, the last induction lamp of the previous group of induction lamps is turned off at the moment, the induction lamp of the new vehicle detector position is turned on, and the visual effect is that the group of induction lamps moves synchronously along with the vehicle, so that the vehicle driving behind is reminded of carefully and slowly driving. When the visibility is not low to a preset value, the trail is interrupted, and ideally, the trail follows a vehicle, so that the warning effect is the best in the state; however, in practical application, because the interval change between vehicles running on a road is dynamic, when the trail distance exceeds a preset condition, the former trail is not extinguished, and the latter trail is already lighted, so that a 'tail connection' phenomenon is formed, and a visual phenomenon is that when the former trail is not extinguished, the latter trail is synchronously lighted next to the former trail, so that a continuous warning band without interruption is formed; in this case, the warning effect for positioning the front vehicle is obviously reduced, and therefore, how to eliminate the 'tail connection' is a problem to be solved at present.
Disclosure of Invention
It is therefore an object of the present invention to provide an apparatus and a method for adaptively adjusting a trail to improve the above-mentioned problems.
In a first aspect, an embodiment of the present invention provides a trail adaptive adjusting device, where the trail adaptive adjusting device includes:
a travel parameter obtaining unit for obtaining vehicle distance information between two adjacent vehicles traveling on a road surface and position information of a vehicle ahead in a traveling direction;
the judging unit is used for judging whether the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameter and the preset distance between the two groups of induction lamps;
the trail adjustment parameter generating unit is used for calculating a trail adjustment parameter if the distance information is smaller than the sum of a pre-stored current standard trail parameter and a preset distance between two groups of induction lamps, wherein the trail adjustment parameter is smaller than the pre-stored current standard trail parameter;
and the induction lamp control unit is used for controlling an induction lamp system to comprise Z1 groups of induction lamps which are arranged at equal intervals and are related to the position information to be turned on according to the trail adjustment parameters, wherein the prestored current standard trail parameters are more than or equal to the intervals of two adjacent groups of induction lamps.
In a second aspect, an embodiment of the present invention further provides a trail adaptive adjustment method, where the trail adaptive adjustment method includes:
obtaining vehicle distance information between two adjacent vehicles traveling on a road surface and position information of a vehicle ahead in a traveling direction;
judging whether the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameters and the preset distance between two groups of induction lamps;
if the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameter and the preset distance between the two groups of induction lamps, calculating a trail adjustment parameter, wherein the trail adjustment parameter is smaller than the pre-stored current standard trail parameter;
and controlling an induction lamp system to comprise Z1 groups of induction lamps with equal spacing settings related to the position information to be turned on according to the trail adjustment parameters, wherein the prestored current standard trail parameters are greater than or equal to the spacing between two adjacent groups of induction lamps.
Compared with the prior art, the trail adaptive adjusting device and method provided by the invention have the advantages that when the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameter and the distance between the two preset groups of induction lamps, the trail adjusting parameter is calculated, wherein the trail adjusting parameter is smaller than the pre-stored current standard trail parameter; and controlling an induction lamp system to comprise Z1 groups of induction lamps which are arranged at equal intervals and are related to the position information to be lightened according to the trail adjustment parameters. The trail self-adaptive adjusting device and the trail self-adaptive adjusting method can self-adaptively adjust the lighting number of the induction lamps according to the current vehicle distance information, and the interval distance between the induction lamps is unchanged, so that trail adjusting parameters are shortened in a self-adaptive mode by reducing the lighting number of the induction lamps, the adjusted trail length is smaller than the driving interval distance, the 'tail connection' phenomenon is eliminated, the warning effect of the induction lamps is improved, and traffic accidents are reduced.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic interaction diagram of a server, a vehicle inspection device, a visibility detection device, and an induction lamp, respectively, according to an embodiment of the present invention;
fig. 2 is a block diagram of a server according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of functional units of a trail adaptive adjusting apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an embodiment of the present invention for inducing a lamp set to be in a lighting state;
fig. 5 is a flowchart of a trail adaptive adjustment method according to an embodiment of the present invention.
Icon: 100-a vehicle detector; 200-a server; 300-trail adaptive adjusting device; 400-an induction lamp; 500-visibility detection device; 101-a processor; 102-a memory; 103-a memory controller; 104-peripheral interfaces; 301-an information receiving unit; 302-a determination unit; 303-a driving parameter obtaining unit; 304-a trail adjustment parameter generation unit; 305-inducing a lamp control unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The apparatus and method for adaptive wake adjustment provided by the preferred embodiment of the present invention can be applied to the application environment shown in fig. 1. As shown in fig. 1, the plurality of car inspectors 100, the plurality of induction lamps 400, the one or more visibility detection devices 500 and the server 200 are located in a network through which the plurality of car inspectors 100, the plurality of induction lamps 400 and the one or more visibility detection devices 500 respectively perform data interaction with the server 200. In the embodiment of the present invention, the server 200 may be, but is not limited to, a web server, a database server, a cloud server, and the like. The network may be a wired network or a wireless network, and fig. 1 illustrates a wireless network.
Fig. 2 shows a block diagram of a server 200 applicable to an embodiment of the present invention. The server 200 comprises a trail adaptation adjusting device 300, a processor 101, a memory 102, a storage controller 103 and a peripheral interface 104.
The memory 102, the memory controller 103, the peripheral interface 104 and the processor 101 are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. The trail adaptive adjusting apparatus 300 includes at least one software function module which may be stored in the memory 102 in the form of software or firmware (firmware) or solidified in an Operating System (OS) of the client 100. The processor 101 is configured to execute an executable module stored in the memory 102, for example, a software functional module or a computer program included in the wake adaptive adjusting apparatus 300.
The Memory 102 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM) of the ROM 102, a Programmable Read Only Memory (PROM), an Erasable Read Only Memory (EPROM), an electrically Erasable Read Only Memory (EEPROM), and the like. The memory 102 is configured to store a program, and the processor 101 executes the program after receiving an execution instruction, and the method executed by the server defined by the flow process disclosed in any of the foregoing embodiments of the present invention may be applied to the processor 101, or implemented by the processor 101.
The processor 101 may be an integrated circuit chip having signal processing capabilities. The Processor 101 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor 101 may be any conventional processor 101 or the like.
The peripheral interface 104 couples various input/output devices to the processor 101 as well as to the memory 102. In some embodiments, the peripheral interface 104, the processor 101, and the memory controller 103 may be implemented in a single chip. In other examples, they may be implemented separately from the individual chips.
It will be appreciated that the configuration shown in fig. 2 is merely illustrative and that server 200 may include more or fewer components than shown in fig. 2 or have a different configuration than shown in fig. 2. The components shown in fig. 2 may be implemented in hardware, software, or a combination thereof.
Referring to fig. 3, an embodiment of the present invention provides a trail adaptive adjusting apparatus 300, which is applied to a server 200, and a plurality of car inspectors 100, a plurality of induction lamps, and a visibility detecting device 500 are respectively in communication connection with the server 200. As shown in fig. 4, the inducing lamps are equidistantly spaced along the extending direction of the road according to a preset distance, in this embodiment, the installation spacing distance of the inducing lamps is 20 meters, and certainly, the installation spacing distance can be adjusted according to actual situations. The number of the car inspectors 100 is equal to the number of the induction lamps, each car inspector 100 is arranged in the same position with one induction lamp, each car inspector 100 is prestored with ID information, and each ID information is related to the position information of the car inspector 100. The vehicle inspection device 100 is used for detecting vehicle signals when vehicles on a road pass by, and the induction lamp is used for prompting that a vehicle is close to the front of a vehicle behind and needs to be carefully and slowly driven. The trail adaptive adjustment device 300 includes an information receiving unit 301, a determination unit 302, a driving parameter obtaining unit 303, a trail adjustment parameter generation unit 304, and an induction lamp control unit 305.
The information receiving unit 301 is configured to receive a visibility value associated with the position information sent by the visibility detecting device 500.
The determining unit 302 is configured to determine whether the visibility value is lower than a preset safety threshold.
The induction lamp control unit 305 is further configured to control an induction lamp group Z2 set at equal intervals and associated with the position information to be turned on according to a pre-stored current standard trail parameter if the visibility value is lower than a preset safety threshold.
When the visibility value is lower than a preset safety threshold (for example, when the visibility value is lower than 150 meters), the safety is low, so that a driver needs to be reminded at any time, and there may be a vehicle ahead, so that the vehicle needs to be driven carefully at any time, at this time, the trail adaptive adjustment device 300 is in the ultra-low visibility alarm mode, that is, the Z2 group induction lamps are controlled to be turned on according to the pre-stored current standard trail parameters, Z2 is the pre-stored current standard trail parameters, and the trail adjustment function stops working during the ultra-low visibility. Of course, it is also possible to control all the induction lamps included in the induction lamp system to be turned on, thereby warning the driver of the careful jogging all the way.
The driving parameter obtaining unit 303 is configured to obtain distance information between two adjacent vehicles driving on the road surface and position information of a vehicle ahead in the driving direction if the visibility value is higher than a preset safety threshold.
If the visibility value is higher than a preset safety threshold (for example, the visibility value is greater than 150 m, for example, in an interval of 150 m to 500 m), the trail adaptive adjusting apparatus 300 enters a trail parameter adjusting mode.
Specifically, the driving parameter obtaining unit 303 may include, but is not limited to:
and the information receiving subunit is used for receiving vehicle detection signals and position information of two adjacent vehicles which run on the road surface and are sent by the same vehicle detector 100 which is arranged in the same position with the induction lamp, and receiving vehicle speed information of a vehicle which is close to the front in the running direction and sent by a vehicle speed detector.
In this embodiment, the vehicle speed detector may be an independent vehicle speed detector, or may be two adjacent vehicle inspection devices 100. Specifically, two adjacent vehicle inspection devices 100 respectively send vehicle detection signals when a vehicle passes through, and the server 200 respectively records the time of successively receiving the vehicle detection signals sent by the two adjacent vehicle inspection devices 100, so that the time t consumed by the vehicle between the two adjacent vehicle inspection devices 100 before and after the vehicle passes through can be calculated. The above-mentioned position information is position information associated with the ID information of the vehicle inspection device 100.
And the time recording subunit is used for respectively recording the first time and the second time when the vehicle detection signals of the two vehicles are received.
The first time and the second time are the times when two vehicles pass through the same vehicle inspection device 100.
And the vehicle distance information calculating subunit is used for calculating the vehicle distance information according to an equation D-V (t2-t1), wherein V is the vehicle speed information, t1 is a first time, and t2 is a second time.
Specifically, an occupancy pulse waveform is generated when the vehicle detector 100 detects a vehicle, the occupancy signal of the vehicle detector 100 is released when a preceding vehicle passes through the vehicle detector 100 and a following vehicle does not pass through the vehicle detector 100, the vehicle detector 100 generates an occupancy pulse signal when the following vehicle enters the vehicle detector 100, and a release signal interval between two occupancy signals is a time interval between the preceding vehicle and the following vehicle.
The judging unit 302 is configured to judge whether the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameter and the preset distance between two sets of inducing lamps.
In this embodiment, the current standard trail parameter may be between 60 meters and 80 meters, the dynamic adjustment interval of the current standard trail parameter may be between 0 meter and 240 meters, the standard adjustment step length is 20 meters, and the trail adjustment parameter is certainly smaller than the standard trail according to the adjustment requirement, so the trail adjustment parameter does not exceed the standard trail length, which is exemplified by that the current standard trail parameter is 60 meters.
The trail adjustment parameter generating unit 304 is configured to calculate a trail adjustment parameter if the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameter and the preset distance between the two sets of induction lamps.
And the trail adjustment parameter is smaller than the pre-stored current standard trail parameter. The number of the inducing lamps 400 may be the trail adjusting parameter, and the trail adjusting parameter may also be the trail distance, which is not limited herein, and the number of the inducing lamps 400 is exemplified as the trail adjusting parameter below.
Specifically, the trail adjustment parameter generating unit 304 is configured to calculate the trail adjustment parameter according to the equation Z1 ═ INT (D/D), where Z1 is the trail adjustment parameter (i.e., the number of induction lamps 400), D is the vehicle distance information, and D is the preset distance between two adjacent induction lamps.
The induction lamp control unit 305 is configured to control the Z1 groups of induction lamps included in an induction lamp system and arranged at equal intervals and associated with the position information to be turned on according to the trail adjustment parameter.
And the pre-stored current standard trail parameters are more than or equal to the distance between two adjacent groups of induction lamps or two groups of induction lamps. In this embodiment, the specific control manner of the induction lamp control unit 305 may be, for example: if the vehicle distance is 85 meters, the pre-stored current standard trail parameter is 60 meters, and the current standard trail parameter Z2 is 4 groups, the trail distance is larger than the current standard trail parameter, and the tail connection phenomenon does not occur, so that the distance of the trail does not need to be adjusted, and 4 groups of induced lamps still keep on being turned on.
When the vehicle distance D is 45 meters, the vehicle distance is smaller than the current standard trail parameter, and a tail connection phenomenon occurs, so that the trail parameter needs to be adjusted, that is, the trail adjustment parameter Z1 is 45/20 is 2 groups, at this time, 2 groups of induction lamps are set at equal intervals related to the control position information to be turned on, and the trail distance is 20 meters from two adjacent groups of induction lamps.
In addition, considering that when the vehicle distance information is smaller than the preset distance between two adjacent induction lamps, the vehicle distance is relatively close, and the formula is not suitable for calculating the trail adjustment parameter. Therefore, the determination unit 302 is further configured to determine whether the vehicle distance information is smaller than a preset distance between two adjacent inducing lamps. The trail adjustment parameter generating unit 304 is configured to calculate a trail adjustment parameter if the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameter and the preset distance between two sets of induction lamps and is larger than the preset distance between two adjacent induction lamps. The trail adjustment parameter generating unit 304 is further configured to use a group of induction lamps as a trail adjustment parameter if the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameter and the preset distance between two groups of induction lamps, and the vehicle distance information is smaller than the preset distance between two adjacent induction lamps. That is, when the vehicle passes through the guidance lamp, the guidance lamp is controlled to be turned on at the position of the vehicle, when the vehicle is detected by the next vehicle detector 100, the guidance lamp in the same position as the next vehicle detector 100 is controlled to be turned on, and the previous guidance lamp is controlled to be turned off, so that the tail-end phenomenon is effectively prevented.
It should be noted that, in this embodiment, the trail adjustment parameters in this embodiment include a forward trail adjustment parameter and a backward trail adjustment parameter. The induction lamp control unit 305 controls Z1 groups of induction lamps arranged at equal intervals in front of the position information and included in an induction lamp system to be turned on according to the forward trail adjustment parameter; the induction lamp control unit 305 controls an induction lamp system to light up the induction lamps in the group of Z1 induction lamps arranged at equal intervals behind the position information according to the backward trail adjustment parameter; certainly, the inducing lamps in the Z1 groups located behind the position information and at equal intervals can be controlled to be turned on at the same time, which can be preset according to actual requirements and is not described herein again.
In this embodiment, the brightness and the flicker frequency of the induction lamp may also be adaptively controlled according to the trail adjustment parameter. For example, the lower the trail adjustment parameter, the higher the brightness of the induced light and the flicker frequency; conversely, the higher the trail adjustment parameters, the lower the brightness of the induced lamp and the flicker frequency.
Furthermore, since the values of the traffic flow in the trail induction section are not always balanced, sometimes a sudden peak (for example, holiday or peak in the morning and evening) occurs, if the trail parameters are adjusted too frequently, the stability of the system is affected, and the interval control time for adjustment is set. Therefore, the information receiving unit 301 is configured to receive the vehicle detection signal transmitted by one of the car inspectors 100 that is located in the same position as the guidance lamp.
The trail adaptive adjusting apparatus 300 may further include:
and the counting unit is used for counting the times of receiving the vehicle detection signals within the preset time.
The interval control time generating unit is used for generating interval control time according to the counting value.
For example, the higher the traffic flow, the shorter the interval control time; on the contrary, the lower the traffic flow is, the longer the interval control time is, it should be noted that in this embodiment, the generated interval control time should not be less than 15 minutes to ensure the stability of the system. Therefore, the above-described running parameter obtaining unit 303 is configured to obtain the vehicle distance information between two adjacent vehicles running on the road surface and the position information of the vehicle ahead in the running direction at every interval control time, thereby finally adjusting the number of groups of induction lamps that need to be turned on at every interval control time. In the present application, the traffic flow of a road section is detected, and the trail control of the lane and the actual measurement of the vehicle separation distance in the lane can be realized by changing the vehicle detector 100.
The trail adaptive adjusting device 300 may lock/unlock the guidance lights 400 of all or a local section according to actual requirements, while the guidance lights 400 are locked, trail parameters may not be adjusted, the trail parameters are directly executed according to the trail parameters at the locking time, and after unlocking, the trail parameters may be adaptively adjusted according to the above-mentioned manner.
Referring to fig. 5, an embodiment of the present invention further provides a trail adaptive adjustment method, and it should be noted that the basic principle and the generated technical effect of the trail adaptive adjustment method provided by the embodiment of the present invention are the same as those of the above embodiment, and for brief description, corresponding contents in the above embodiment may be referred to where the embodiment of the present invention is not mentioned. The self-adaptive wake adjustment method comprises the following steps:
step S401: a visibility value associated with the location information sent by the visibility detecting device 500 is received.
It is to be understood that step S401 may be performed by the information receiving unit 301.
Step S402: and judging whether the visibility value is lower than a preset safety threshold value, if so, executing the step S403, and if not, executing the step S404.
It is understood that step S402 may be performed by the determination unit 302.
Step S403: and controlling an induction lamp system to comprise Z2 groups of induction lamps with equal interval settings related to the position information to be lightened according to the pre-stored current standard trail parameters.
It is understood that step S403 may be performed by the inducing lamp control unit 305.
Step S404: vehicle distance information between two adjacent vehicles traveling on a road surface and position information of a vehicle ahead in the traveling direction are obtained.
It is to be understood that step S401 may be performed by the running parameter obtaining unit 303.
Wherein, step S404 includes:
step S4041: the method comprises the steps of receiving vehicle detection signals and position information of two adjacent vehicles which run on a road surface and are sequentially sent by the same vehicle detector 100 which is arranged in the same position with the induction lamp, and receiving vehicle speed information of a vehicle which is close to the front in the running direction and sent by a vehicle speed detector.
Step S4042: the first time and the second time when the vehicle detection signals of the two vehicles are received are recorded.
Step S4043: the vehicle distance information is calculated according to the formula D ═ V (t2-t 1).
Where V is the vehicle speed information, t1 is a first time, and t2 is a second time.
Step S405: and judging whether the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameters and the preset distance between the two groups of induction lamps, and if so, executing the step S406.
Step S406: and judging whether the vehicle distance information is smaller than the preset distance between two adjacent induction lamps, if not, executing the step S407, and if so, executing the step S408.
The determination unit 302 may execute steps S405 and S406.
Step S407: and calculating a trail adjustment parameter.
Specifically, step S407 may include: and calculating a trail adjustment parameter according to the formula Z1-INT (D/D), wherein Z1 is the trail adjustment parameter, D is the vehicle distance information, and D is the preset distance between two adjacent induction lamps.
And the trail adjustment parameter is smaller than the pre-stored current standard trail parameter. For example, the current standard trail parameters are 4 groups, and the trail adjustment parameters are 1 group, 2 groups or 3 groups.
Step S408: a set of induced lights was used as the trail adjustment parameter.
It is to be understood that step S401 may be performed by the trail adjustment parameter generation unit 304.
Step S409: and controlling an induction lamp system to comprise Z1 groups of induction lamps which are arranged at equal intervals and are related to the position information to be lightened according to the trail adjustment parameters.
It is understood that step S401 may be performed by the inducing lamp control unit 305.
And the pre-stored current standard trail parameters are more than or equal to the distance between two adjacent groups of induction lamps or two groups of induction lamps.
In summary, according to the apparatus and method for adaptively adjusting trail provided by the present invention, when the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameter and the distance between the two preset groups of induction lamps, the trail adjustment parameter is calculated, wherein the trail adjustment parameter is smaller than the pre-stored current standard trail parameter, and the trail adjustment parameter is smaller than the pre-stored current standard trail parameter; and controlling an induction lamp system to comprise Z1 groups of induction lamps which are arranged at equal intervals and are related to the position information to be lightened according to the trail adjustment parameters. The trail self-adaptive adjusting device and the trail self-adaptive adjusting method can self-adaptively adjust the lighting number of the induction lamps according to the current vehicle distance information, and the interval distance between the induction lamps is unchanged, so that trail adjusting parameters are shortened in a self-adaptive mode by reducing the lighting number of the induction lamps, the adjusted trail length is smaller than the driving interval distance, the 'tail connection' phenomenon is eliminated, the warning effect of the induction lamps is improved, and traffic accidents are reduced.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A trail adaptive adjusting device, wherein the trail adaptive adjusting device comprises:
a travel parameter obtaining unit for obtaining vehicle distance information between two adjacent vehicles traveling on a road surface and position information of a vehicle ahead in a traveling direction;
the judging unit is used for judging whether the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameter and the preset distance between the two groups of induction lamps;
the trail adjustment parameter generating unit is used for calculating trail adjustment parameters if the distance information is smaller than the sum of the pre-stored current standard trail parameters and the preset distance between two groups of induction lamps, wherein the trail adjustment parameters are obtained by calculating according to Z1 (INT (D/D)), Z1 is the trail adjustment parameters, D is the distance information, and D is the preset distance between two adjacent induction lamps; the trail adjustment parameter is smaller than a pre-stored current standard trail parameter;
and the induction lamp control unit is used for controlling an induction lamp system to comprise Z1 groups of induction lamps which are arranged at equal intervals and are related to the position information to be turned on according to the trail adjustment parameters, wherein the prestored current standard trail parameters are more than or equal to the interval between two adjacent groups of induction lamps or the two groups of induction lamps.
2. The trail adaptive adjusting device according to claim 1, wherein the judging unit is further configured to judge whether the vehicle distance information is smaller than a preset distance between two adjacent inducing lamps;
the trail adjustment parameter generating unit is used for calculating trail adjustment parameters if the distance information is smaller than the sum of the pre-stored current standard trail parameters and the preset distance between two groups of induction lamps and is larger than the preset distance between two adjacent induction lamps;
the trail adjustment parameter generation unit is further configured to use one group of induction lamps as a trail adjustment parameter if the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameter and the preset distance between two groups of induction lamps and the vehicle distance information is smaller than the preset distance between two adjacent induction lamps.
3. The trail adaptive adjustment device according to claim 1, wherein the driving parameter obtaining unit includes:
the information receiving subunit is used for receiving vehicle detection signals and position information of two adjacent vehicles which run on the road surface and are successively sent by the same vehicle detector in the same position as the induction lamp, and receiving vehicle speed information of a vehicle which is close to the front in the running direction and sent by a vehicle speed detector;
the time recording subunit is used for respectively recording a first time and a second time when the vehicle detection signals of the two vehicles are received;
and the vehicle distance information calculating subunit is used for calculating the vehicle distance information according to an equation D-V (t2-t1), wherein V is the vehicle speed information, t1 is a first time, and t2 is a second time.
4. The apparatus of claim 1, wherein the apparatus further comprises:
the information receiving unit is used for receiving a visibility value which is sent by visibility detection equipment and is associated with the position information;
the judging unit is also used for judging whether the visibility value is lower than a preset safety threshold value;
the induction lamp control unit is also used for controlling an induction lamp system to comprise Z2 groups of induction lamps which are arranged at equal intervals and are related to the position information to be lightened according to a pre-stored current standard trail parameter when the visibility value is lower than a preset safety threshold value;
the driving parameter obtaining unit is used for obtaining vehicle distance information between two adjacent vehicles driving on the road surface and position information of the vehicle ahead along the driving direction if the visibility value is higher than a preset safety threshold value.
5. A trail adaptive adjustment method is characterized by comprising the following steps:
obtaining vehicle distance information between two adjacent vehicles traveling on a road surface and position information of a vehicle ahead in a traveling direction;
judging whether the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameters and the preset distance between two groups of induction lamps;
if the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameter and the preset distance between two groups of induction lamps, calculating a trail adjustment parameter, wherein the trail adjustment parameter is obtained by calculation according to the Z1 (INT (D/D)), Z1 is the trail adjustment parameter, D is the vehicle distance information, and D is the preset distance between two adjacent induction lamps; the trail adjustment parameter is smaller than a pre-stored current standard trail parameter;
and controlling an induction lamp system to comprise Z1 groups of induction lamps at equal intervals and related to the position information to be turned on according to the trail adjustment parameters, wherein the prestored current standard trail parameters are greater than or equal to the interval between two adjacent groups of induction lamps or the two groups of induction lamps.
6. The trail adaptive adjustment method according to claim 5, wherein the step of judging whether the distance information is smaller than the sum of the pre-stored current standard trail parameter and the preset distance between two groups of induction lamps comprises:
judging whether the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameters and the preset distance between two groups of induction lamps, if so, judging whether the vehicle distance information is smaller than the preset distance between two adjacent induction lamps;
if the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameters and the preset distance between the two groups of induction lamps, the step of calculating the trail adjustment parameters comprises the following steps:
if the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameters and the preset distance between two groups of induction lamps and is larger than the preset distance between two adjacent induction lamps, calculating trail adjustment parameters;
and if the vehicle distance information is smaller than the sum of the pre-stored current standard trail parameters and the preset distance between two groups of induction lamps, and the vehicle distance information is smaller than the preset distance between two adjacent induction lamps, taking one group of induction lamps as trail adjustment parameters.
7. The trail adaptive adjustment method according to claim 5, wherein the step of obtaining the vehicle distance information between two adjacent vehicles traveling on the road surface and the position information of the vehicle ahead in the traveling direction includes:
receiving vehicle detection signals and position information of two adjacent vehicles which run on the road surface and are sequentially sent by the same vehicle detector which is arranged in the same position with the induction lamp, and receiving vehicle speed information of a vehicle which is close to the front in the running direction and sent by a vehicle speed detector;
recording a first time and a second time when vehicle detection signals of two vehicles are received;
and calculating the vehicle distance information according to the formula D-V (t2-t1), wherein V is the vehicle speed information, t1 is a first time, and t2 is a second time.
8. The trail adaptive adjustment method according to claim 5, wherein before the step of obtaining the vehicle distance information between two adjacent vehicles traveling on a road surface and the position information of the vehicle ahead in the traveling direction, the trail adaptive adjustment method further comprises:
receiving a visibility value which is sent by visibility detection equipment and is associated with the position information;
judging whether the visibility value is lower than a preset safety threshold value or not;
the step of obtaining the vehicle distance information between two adjacent vehicles traveling on the road surface and the position information of the vehicle ahead in the traveling direction includes: if the visibility value is higher than a preset safety threshold value, obtaining vehicle distance information between two adjacent vehicles running on the road surface and position information of the vehicle which is close to the front in the running direction;
and if the visibility value is lower than a preset safety threshold value, controlling an induction lamp system to comprise Z2 groups of induction lamps which are arranged at equal intervals and are related to the position information to be lightened according to the pre-stored current standard trail parameters.
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