CN111028526A - Driving safety guidance system and rear-end collision prevention operation method thereof - Google Patents
Driving safety guidance system and rear-end collision prevention operation method thereof Download PDFInfo
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- CN111028526A CN111028526A CN201911350790.5A CN201911350790A CN111028526A CN 111028526 A CN111028526 A CN 111028526A CN 201911350790 A CN201911350790 A CN 201911350790A CN 111028526 A CN111028526 A CN 111028526A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
- G08B5/38—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources using flashing light
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- General Physics & Mathematics (AREA)
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention discloses a driving safety inducing system, which comprises a control center and a plurality of inducing lamp units, wherein the control center and the inducing lamp units are in star-shaped wireless networking, and the inducing lamp units comprise a bicolor inducing lamp group, a wireless communication module and an MCU (microprogrammed control unit) control unit and are selectively provided with a vehicle passing detection device; in the rear-end collision prevention operation method mode of the system, when no vehicle exists, the yellow induction lamp sets of all the induction lamp units synchronously flash, when the vehicle passes through the induction lamp units, the induction lamp units detect that the vehicle passes through the vehicle detection device, the red LED lamp sets of the induction lamps of a specific set can be triggered to light up, a red trail is formed to prompt a rear vehicle, at the moment, the yellow induction lamps of other induction devices synchronously flash, and when the vehicle runs forwards through the next induction device set, the red trail and the vehicle dynamically move forwards. The invention has high control precision, intelligent operation and control, can realize real-time effect and has stable performance.
Description
Technical Field
The invention relates to the technical field of safety auxiliary equipment of expressways, in particular to a driving safety guidance system and a rear-end collision prevention operation method thereof.
Background
The expressway provides good conditions for high-speed passing of vehicles, but vehicles running on the expressway usually have higher speed, so that the visibility of the road is reduced under the influence of severe weather such as fog, snow, heavy rain, sand storm and the like, the visible distance of a driver is influenced, the higher speed running of the vehicles can bring greater influence on the safe operation of the road, the traffic safety of the road and the normal operation of a road network are influenced, and even traffic accidents can be frequently caused in severe cases.
For the above reasons, a driving guidance system is generally installed on both an expressway and a road section with low visibility. The conventional driving guidance system is characterized in that the guidance marks are systematically arranged on two sides of a lane, the guidance marks are made of reflective materials, a driver is provided with route direction indication by irradiating reflection light through an automobile light source, the guidance marks made of the reflective materials emit light passively, and the penetration capability of the passive reflected light and the visual sense influence of people are not obvious in foggy days. There are also some driving induction systems that use initiative luminescence, the illumination unit of these driving induction systems carries out driving induction through monochromatic light stroboflash usually under operating condition, and the scintillation is asynchronous scheduling problem appears easily in the use, and under special weather condition, the condition of preventing knocking into the back the function inefficacy appears easily, influences the normal use of system. Therefore, there is a need for a driving guidance device that can safely guide a driving vehicle on a road in bad weather.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a driving safety guiding system and a rear-end collision prevention operation method thereof, wherein the system can be used on both sides of an expressway and other closed road sections to carry out light warning and route guiding on driving in a foggy day or under other low-visibility conditions so as to ensure driving safety, so that the defects in the technical background are overcome.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a driving safety induction system comprises a control center and a plurality of induction lamp units, wherein each induction lamp unit comprises a first type of induction lamp unit and a second type of induction lamp unit, the first type of induction lamp unit is arranged on the outer side of a highway and comprises a red and yellow double-color induction lamp group, a wireless communication module and an MCU (microprogrammed control unit), the second type of induction lamp unit is arranged on the inner side of the highway, namely on one side of a high-speed middle isolation zone, and a vehicle passing detection device is arranged besides the red and yellow double-color induction lamp group, the wireless communication module and the MCU control unit; the control center is connected with the induction lamp units in a star-shaped wireless networking mode, is in communication connection with the MCU control unit through the wireless communication module, and controls the red and yellow induction lamp groups to be turned on and off and switched in a mode through the MCU control unit.
By way of further limitation, the red and yellow induction lamp sets in the induction lamp unit are LED lamp sets.
As further limitation, the communication frequencies of the induction lamp units in the two driving directions are different, so that data communication can be realized only by the induction lamps in the same driving direction, and mutual interference of communication between the induction lamps in the two driving directions is effectively avoided.
As a further limitation, the wireless communication module includes a 433M wireless Lora communication module and a 490M wireless communication module, wherein the 433M wireless Lora communication module is used for data exchange and control between the induction lamp unit and the control hub to assist the control hub in turning on and off the induction lamp unit; and the 490M wireless communication module is used for implementing data exchange between the induction lamp units.
As a further limitation, the vehicle passing detection device is triggered when the vehicle passes, the vehicle passing detection device obtains a signal and sends the signal to the MCU control unit in real time to realize vehicle passing detection, and the vehicle passing detection device is one or a combination of an infrared sensor, a radar, and a distance sensor.
The method is realized by using the driving safety guidance system as a tool, and in the method, when no vehicle passes through an expressway, yellow guidance lamp groups of all guidance lamp units synchronously flash, and when a vehicle passes through the guidance lamp, the guidance lamp unit arranged at one side close to a high-speed central isolation belt triggers a red guidance lamp group of the guidance lamp unit in a selected length area to light after the vehicle passes through the guidance lamp unit, and the information is prompted by the fact that the red guidance lamp group is red trail:
a vehicle exists in the distance of the front red area;
the safe driving distance between the rear following vehicle and the front normal driving vehicle is also set;
and in the process, the yellow induction lamp groups in other induction lamp units are kept to synchronously flash to show the road profile.
A rear-end collision prevention operation method of a driving safety guidance system specifically comprises the following operation steps:
s1, controlling the induction lamp units in the central control road area to enable the yellow induction lamp group to synchronously flicker;
s2, controlling the center to broadcast an instruction according to the actual visibility or environmental conditions, setting the length of the red trail to be L, and enabling the induction lamp system to enter a rear-end collision prevention mode:
the induction lamp units along the road are numbered, the natural number sequence is carried out according to the mode that the first type induction lamp units and the second type induction lamp units are numbered in a staggered mode during numbering, when a vehicle passes through the second type induction lamp units with the number of N, the vehicle passing detection device of the induction lamp units detects the passing of the vehicle, at the moment, the second type induction lamp units with the number of N broadcast an instruction, the instruction comprises the information of the number of N, and meanwhile, the induction lamp units are changed from the twinkling of a yellow induction lamp group to a normally-on red induction lamp group;
after receiving the instruction, other induction lamp units analyze the instruction through a built-in program of the MCU control unit, extract the number information of the induction lamp unit sending the instruction, compare and judge the number information with the number Y of the induction lamp of the other induction lamp units, and when Y is greater than N, the program does not perform related processing; when Y is less than N, the program calculates and judges that if (N-Y)/2 is less than L, the program controls the induction lamp to change from the flickering of the yellow induction lamp group to the flickering of the red induction lamp group, if (N-Y)/2 is equal to L, the program controls the induction lamp to change from the flickering of the red induction lamp group to the flickering of the yellow induction lamp group, and when (N-Y)/2 is less than L, the program does not carry out relevant processing;
and after the yellow induction lamp set is changed into the red induction lamp set from flickering, starting to count down within a set time, and if the upstream lamp is not switched into the yellow induction lamp set to flicker before the count down is finished, automatically switching into the yellow induction lamp set to flicker after the count down is finished.
By way of further limitation, in the process of realizing synchronous flashing of the yellow light, the method comprises the following control steps:
after all the induction lamp units receive the starting instruction of the control center, the cnt starts from 0, a timer is adopted, and 1 is added to the value of the cnt every 25ms, so that the increment infinite loop of the cnt between 0 and 7999 is realized. To achieve three different frequency flicker patterns of 30/min, 60/min, 120/min, at 30/min, a equals 80, b equals 20; at 60 times/min, a is 40, b is 10; at 120 times/min, a is 20, b is 5; in the procedure, when cnt% a is equal to 0, the yellow induction lamp set is turned on, and when cnt% a is equal to b, the yellow induction lamp set is turned off. Under the above operation steps, the induction lamp units can realize synchronous flicker of all induction lamp units under different frequencies, and even if the red induction lamp group is switched from normally on to flicker of the yellow induction lamp group, the yellow induction lamp group is still in an unaffected synchronous flicker state.
Has the advantages that: the driving safety inducing system and the rear-end collision preventing operation method thereof have the advantages of high intelligent degree, simple application, easy operation, stable performance, no interference of signals and good synchronization effect, use of the fuzzy control method to obtain the optimal control mode, replace the original manual control method and the fixed-frequency lane lamp stroboscopic mode, induce the change of the state by detecting whether vehicles pass through the road section, have better inducing effect, increase the application range of the driving inducing device and are particularly suitable for low-visibility high-speed road areas under the influence of severe weather.
Drawings
Fig. 1 is a schematic view of the number of induction lamp units according to the first embodiment of the present invention.
Fig. 2 is a schematic diagram of a change of a red trail according to a first embodiment of the invention.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described below by combining the specific drawings and the embodiments.
In the following examples, it will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
A driving safety induction system comprises a control center and a plurality of induction lamp units, wherein the control center is a field PC (personal computer) controller or an industrial personal computer, the control center is connected with the induction lamp units arranged on the field in a star wireless networking mode, the induction lamp units comprise two types, one type is a first type of induction lamp unit arranged on the outer side of a highway, and the induction lamp units comprise an MCU (microprogrammed control unit) for signal acquisition, communication control and system control, a red LED induction lamp group used for trail following and normally lighting, a yellow LED induction lamp group used for synchronous flashing to show a road outline when no vehicle passes through, a 433M wireless Lora communication module used for data exchange and control between the induction lamp units and the control center and a 490M wireless communication module used for realizing data exchange between the induction lamp units; the other induction lamp unit is a second induction lamp unit arranged on the inner side of the expressway, namely on one side of the high-speed middle isolation belt, and the second induction lamp unit is also provided with a vehicle passing detection device besides an MCU control unit, a red LED induction lamp group, a yellow LED induction lamp group, a 433M wireless Lora communication module and a 490M wireless communication module.
When the driving safety guidance system of this embodiment sets the rear-end collision prevention operation mode, the guidance light units are sequentially numbered one by one according to the style of fig. 1, 2, 3, and … …. The induction lamp units are arranged on two sides of the expressway, X in the figure is a positive integer larger than or equal to 1, the induction lamp units with even numbers are induction lamp units of a second type, and the induction lamp units with odd numbers are induction lamp units of a first type.
And the control is carried out according to the mode of figure 2:
A. when the vehicle runs to the 2(X +3) position, the 2(X +3) number lamp is checked to pass through the vehicle, all yellow lamps between the trigger numbers 2X to 2(X +3) stop flashing, and the red lamp is normally on.
B. When the vehicle runs to the 2(X +4) position, the 2(X +4) number lamp is checked to pass through the vehicle, all yellow lamps between the trigger numbers 2(X +1) to 2(X +4) stop flashing, and the red lamp is normally on. And simultaneously triggering induction lamps with the numbers of 2x and 2x-1, and changing the red lamp from the normal lighting to the yellow lamp to synchronously flash.
C. When the vehicle runs to the position 2(X +5), the lamp number 2(X +5) is checked and the vehicle passes through, all yellow lamps between the trigger numbers 2(X +2) and 2(X +5) stop flashing, and the red lamp is normally on. Simultaneously, the induction lamps with the numbers of 2(x +1) and 2(x +1) -1 are triggered, and the red lamp is changed into the yellow lamp to synchronously flash.
D. By analogy, when the vehicle passes through the highway section provided with the fog zone induction lamp system, a red trail which follows the vehicle to walk can be seen by the vehicle at the rear, so that the warning effect of reminding the rear vehicle to keep a safe distance is achieved, meanwhile, the line shape of the highway is more obvious, and the safety of high-speed safe driving is enhanced.
E. In order to avoid the phenomena of long-time work, yellow light flickering and asynchronization between the lamps, the control center broadcasts an instruction again every other hour, and all induction lamps start counting from zero again, so that the time difference of asynchronization of the flickering among the induction lamps is eliminated.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A driving safety induction system is characterized by comprising a control center and a plurality of induction lamp units, wherein each induction lamp unit comprises a first type of induction lamp unit and a second type of induction lamp unit, the first type of induction lamp unit is arranged on the outer side of a highway and comprises a red and yellow double-color induction lamp group, a wireless communication module and an MCU (microprogrammed control Unit), the second type of induction lamp unit is arranged on the inner side of the highway, and a vehicle passing detection device is arranged besides the red and yellow double-color induction lamp group, the wireless communication module and the MCU control unit; the control center is connected with the induction lamp units in a star-shaped wireless networking mode, is in communication connection with the MCU control unit through the wireless communication module, and controls the red and yellow induction lamp groups to be turned on and off and switched in a mode through the MCU control unit.
2. The driving safety inducing system according to claim 1, wherein the red and yellow inducing lamp sets in the inducing lamp unit are LED lamp sets.
3. The driving safety induction system according to claim 1, wherein the communication frequencies of the induction lamp units in the two driving directions are different.
4. The driving safety inducing system according to claim 1, wherein the wireless communication module comprises a 433M wireless Lora communication module and a 490M wireless communication module, wherein the 433M wireless Lora communication module is used for inducing data exchange and control between the light unit and the control center to assist the control center in achieving turning on and off of the inducing light unit; and the 490M wireless communication module is used for implementing data exchange between the induction lamp units.
5. The driving safety guidance system according to claim 1, wherein the vehicle passing detection device is triggered when a vehicle passes, and when a vehicle passes, the vehicle passing detection device obtains a signal and sends the signal to the MCU in real time to realize vehicle passing detection.
6. The driving safety induction system according to claim 1, wherein the vehicle passing detection device is one or a combination of an infrared sensor, a radar, and a distance sensor.
7. A rear-end collision prevention operation method of a driving safety guidance system is realized by using the driving safety guidance system as a tool according to any one of claims 1-6, in the method, when no vehicle passes through an expressway, yellow guidance lamp sets of all guidance lamp units synchronously flash, when a vehicle passes through the guidance lamp, a guidance lamp unit arranged at one side close to a high-speed central isolation belt triggers a red guidance lamp set of the guidance lamp unit in a selected length area to light after the vehicle passes through a vehicle detection device, and information is prompted by the fact that the red guidance lamp set turns on to form a red trail:
a vehicle exists in the distance of the front red area;
the safe driving distance between the rear following vehicle and the front normal driving vehicle is also set;
and in the process, the yellow induction lamp groups in other induction lamp units are kept to synchronously flash to show the road profile.
8. The rear-end collision prevention operation method of the driving safety guidance system according to claim 7, specifically comprising the following operation steps:
s1, controlling the induction lamp units in the central control road area to enable the yellow induction lamp group to synchronously flicker;
s2, controlling the center to broadcast an instruction according to the actual visibility or environmental conditions, setting the length of the red trail to be L, and enabling the induction lamp system to enter a rear-end collision prevention mode:
the induction lamp units along the road are numbered, the natural number sequence is carried out according to the mode that the first type induction lamp units and the second type induction lamp units are numbered in a staggered mode during numbering, when a vehicle passes through the second type induction lamp units with the number of N, the vehicle passing detection device of the induction lamp units detects the passing of the vehicle, at the moment, the second type induction lamp units with the number of N broadcast an instruction, the instruction comprises the information of the number of N, and meanwhile, the induction lamp units are changed from the twinkling of a yellow induction lamp group to a normally-on red induction lamp group;
after receiving the instruction, other induction lamp units analyze the instruction through a built-in program of the MCU control unit, extract the number information of the induction lamp unit sending the instruction, compare and judge the number information with the number Y of the induction lamp of the other induction lamp units, and when Y is greater than N, the program does not perform related processing; when Y is less than N, the program calculates and judges that if (N-Y)/2 is less than L, the program controls the induction lamp to change from the flickering of the yellow induction lamp group to the flickering of the red induction lamp group, if (N-Y)/2 is equal to L, the program controls the induction lamp to change from the flickering of the red induction lamp group to the flickering of the yellow induction lamp group, and when (N-Y)/2 is less than L, the program does not carry out relevant processing;
and after the yellow induction lamp set is changed into the red induction lamp set from flickering, starting to count down within a set time, and if the upstream lamp is not switched into the yellow induction lamp set to flicker before the count down is finished, automatically switching into the yellow induction lamp set to flicker after the count down is finished.
9. The rear-end collision prevention operation method of the driving safety guidance system according to claim 8, wherein the process of realizing synchronous flashing of the yellow light comprises the following control steps:
after all the induction lamp units receive the starting instruction of the control center, the cnt starts from 0, a timer is adopted, and 1 is added to the value of the cnt every 25ms, so that the increment infinite loop of the cnt between 0 and 7999 is realized. To achieve three different frequency flicker patterns of 30/min, 60/min, 120/min, at 30/min, a equals 80, b equals 20; at 60 times/min, a is 40, b is 10; at 120 times/min, a is 20, b is 5; in the procedure, when cnt% a is equal to 0, the yellow induction lamp set is turned on, and when cnt% a is equal to b, the yellow induction lamp set is turned off.
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Cited By (4)
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| CN111583686A (en) * | 2020-05-19 | 2020-08-25 | 河南立达通科技工程有限公司 | Low-visibility highway guidance system and control method |
| CN113724513A (en) * | 2021-11-02 | 2021-11-30 | 西南交通大学 | Vehicle driving guiding method, device and equipment in fog region and readable storage medium |
| CN114155707A (en) * | 2021-05-31 | 2022-03-08 | 浙江柯瑞普科技有限公司 | Intelligent traffic safety driving visual warning system and method |
| CN114582136A (en) * | 2022-02-23 | 2022-06-03 | 东南大学 | Bridge deck lane guiding device and lane level inducing method for foggy days |
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| CN114582136A (en) * | 2022-02-23 | 2022-06-03 | 东南大学 | Bridge deck lane guiding device and lane level inducing method for foggy days |
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