CN111824011A - Alarm method for rear vehicle approaching - Google Patents
Alarm method for rear vehicle approaching Download PDFInfo
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- CN111824011A CN111824011A CN201910233258.9A CN201910233258A CN111824011A CN 111824011 A CN111824011 A CN 111824011A CN 201910233258 A CN201910233258 A CN 201910233258A CN 111824011 A CN111824011 A CN 111824011A
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- Prior art keywords
- vehicle
- alarm
- rear vehicle
- radar
- vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/525—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking automatically indicating risk of collision between vehicles in traffic or with pedestrians, e.g. after risk assessment using the vehicle sensor data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention provides an alarm method for rear vehicle approach, which mainly comprises the following steps: setting a dangerous range interval for alarming by the vehicle; the radar monitoring module monitors whether a rear vehicle enters a monitoring area or not, and transmits the detected rear vehicle driving data to the computing unit when the rear vehicle enters the monitoring area; the calculation unit calculates and transmits a calculation result to the alarm control module; the alarm control module compares the calculation result with the danger range and judges whether to alarm or not; after receiving the alarm signal, the alarm module alarms in an obvious way which can be noticed by a vehicle at the rear; after the rear vehicle reduces the speed and exits the danger range, the alarm control module controls to cancel the alarm warning; through the technical scheme, when the rear vehicle approaches the set dangerous range of the vehicle, the vehicle can send out an obvious alarm signal, so that a driver of the rear vehicle can keep the distance between the vehicles, and the driving safety is improved.
Description
Technical Field
The invention relates to the technical field of safe driving of automobiles, in particular to a method for alarming rear vehicles to approach.
Background
Among the prior art, to car safe driving problem, general car contains a blind area monitoring system, and this system surveys the monitoring through installing the millimeter wave radar in car afterbody both sides, and this system has following four functions at present: the method comprises the following steps that firstly, BSD (Blind Spot detection) blind Spot monitoring is to detect vehicles in rearview mirror blind zones at two sides of the vehicle and vehicles which are fast close to the vehicle through a millimeter wave radar and remind a driver of paying attention to dangerous hidden dangers at the side rear part; secondly, the LCA (Lane Change alert) lane change assistance is to detect vehicles in the blind areas of the rearview mirrors at the two sides of the vehicle and vehicles which are quickly close to the vehicle through a millimeter wave radar and remind a driver of paying attention to the danger hidden danger at the side rear part, so that accidents caused by the blind areas of the rearview mirrors in the lane changing process are avoided; thirdly, RCTA (real Cross-Traffic Alert) Rear vehicle side Traffic warning monitors the Rear sight dead angle of the vehicle through a radar, and when a reverse gear is engaged, once a vehicle enters a monitoring area, a system can give a warning to remind a driver to reduce the possibility of collision; and fourthly DOW (door Open warning) door opening warning, when a driver tries to Open a door, a system checks whether a car or a bicycle is rapidly approaching behind the car or not by using a lateral auxiliary radar sensor, and once the car enters a monitoring area, the system gives a warning to remind a driver of paying attention to the warning to avoid accidents.
The four functions have the defects that firstly, the four functions are used for early warning the driver of the vehicle, and the early warning cannot be carried out on the drivers of the vehicles behind; and secondly, the vehicles right behind the vehicle are not warned, namely, even if the vehicles right behind are detected by the millimeter wave radars (blind area monitoring systems) arranged on the two sides of the tail of the vehicle, the targets right behind are eliminated through a software algorithm.
Disclosure of Invention
The invention provides an alarm method for rear vehicle approaching, which can monitor the traveling condition of the rear vehicle in time, give an alarm to prompt a driver of the rear vehicle in time and increase the driving safety.
In order to solve the technical problem, the invention provides an alarm method for rear vehicle approach, wherein an alarm system is arranged on a vehicle, the alarm system comprises a radar monitoring module, a computing unit, an alarm control module and an alarm module, and the alarm method comprises the following steps:
step one, setting a dangerous range interval for alarming of the vehicle;
step two, the radar monitoring module monitors whether the rear vehicle enters a monitoring area, and when the rear vehicle is monitored to enter the monitoring area, the radar monitoring module transmits the detected driving data of the rear vehicle to the calculating unit and executes step three;
step three: the calculation unit calculates according to the data detected by the radar and transmits the calculation result to the alarm control unit;
step four, the alarm control module compares the calculation result with a set danger range to judge whether to alarm or not, and executes step five to alarm when the current state of the vehicle enters the danger range;
step five, after the alarm module receives the alarm signal, the alarm module alarms in an obvious way that the rear vehicle can notice, and after the rear vehicle reduces the speed and exits the danger range interval set by the rear vehicle, the step six is executed;
and step six, the alarm control module controls the cancellation of alarm warning.
In a first possible implementation manner, the radar monitoring module includes millimeter-wave radars disposed on two sides of the tail of the vehicle.
With reference to the first possible implementation manner, in a second possible implementation manner, the radar monitoring module further includes millimeter wave radars disposed on two side edges of the vehicle.
With reference to the first possible implementation manner, in a third possible implementation manner, the monitoring area of the radar monitoring module includes areas behind the vehicle and on two sides of the vehicle.
With reference to the first possible implementation manner, in a fourth possible implementation manner, the obvious manners that the rear vehicle can notice in the step five include lighting a brake lamp of the vehicle, lighting indicator lamps visible to other rear vehicles, and giving an alarm by emitting sounds that can be heard by a driver of the rear vehicle.
With reference to the first possible implementation manner, in a fifth possible implementation manner, the dangerous range in the first step is set as a range of an expected collision time of two vehicles, and the expected collision time is calculated by dividing a relative distance between the two vehicles detected by a radar by a relative vehicle speed.
With reference to the first possible implementation manner, in a sixth possible implementation manner, the dangerous range in the step one is set as a relative safe distance setting range of two vehicles, and the relative distance between the two vehicles is detected by a millimeter wave radar at the tail of the vehicle.
The invention has the beneficial effects that the millimeter wave radar in the technical scheme is used for monitoring the blind area, detecting the vehicles approaching from the rear, and when the rear vehicles approach to the set dangerous range of the vehicle, the vehicle can send out obvious alarm signals so that the drivers of the rear vehicles can keep the distance between the vehicles and the driving safety is improved; in addition, all install the millimeter wave radar on the rear of a vehicle and both sides side of this car and monitor, not only adjust the rear vehicle and monitor, can also monitor side vehicle simultaneously, avoided the control blind area, improved driving safety.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only drawings of a part of the embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a driving condition in an alarm method for an approaching vehicle behind according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The first embodiment is as follows:
in the method for alarming approach of a rear vehicle provided in this embodiment, an alarm system is disposed on the vehicle, the alarm system includes a radar monitoring module, a computing unit, an alarm control module and an alarm module, wherein the radar detection module includes millimeter-wave radars disposed on two sides of a tail portion of the vehicle, and monitoring ranges of the millimeter-wave radars on the two sides include a rear area of the vehicle, as shown in fig. 1.
The alarm method in the embodiment mainly comprises the following steps.
Step one, setting a dangerous range interval for alarming by the vehicle.
The dangerous range in this embodiment is set by the predicted collision time of two vehicles, the predicted collision time is calculated by dividing the relative distance between the vehicle and the rear vehicle detected by the millimeter wave radar at the rear of the vehicle by the relative vehicle speed, that is, the predicted collision time is set to be less than or equal to 2.5s as the dangerous range, and when the predicted collision time between the vehicle and the rear vehicle detected by the radar in real time is less than or equal to 2.5s, the vehicle enters the warning range.
And step two, the radar monitoring module monitors whether the rear vehicle enters the monitoring area, and when the rear vehicle enters the monitoring area, the radar monitoring module transmits the detected driving data of the rear vehicle to the calculating unit and executes the step three.
In the second step, the radar monitoring module monitors the rear vehicle in real time and transmits data to the computing unit in real time as long as the rear vehicle enters the monitoring area.
And step three, the calculation unit calculates according to the data detected by the radar and transmits the calculation result to the alarm control unit.
In this embodiment, the predicted collision time is calculated from the real-time distance and the real-time velocity of the rear vehicle relative to the host vehicle, and the calculation result is transmitted to the alarm control unit.
And step four, the alarm control module compares the calculation result with a set danger range to judge whether to alarm or not, and if the state of the vehicle at the rear enters the danger range, the alarm control module executes step five to alarm.
In this embodiment, when the predicted collision time calculated by the calculation unit is less than or equal to 2.5s, the alarm control module determines that an alarm needs to be performed, and then the process enters step five.
And step five, after the alarm module receives the alarm signal, the alarm module gives an alarm in an obvious way which can be noticed by the rear vehicle, and after the rear vehicle reduces the speed and exits the dangerous range interval set by the rear vehicle, the step six is executed.
The obvious way in the fifth step in this embodiment includes lighting the brake lamp of the vehicle, lighting the indicator lamps visible to other rear vehicles, and giving an alarm by making sounds audible to the rear vehicle driver, so that the rear vehicle driver can keep the distance between vehicles.
And step six, the alarm control module controls the cancellation of alarm warning.
After the rear vehicle sees the vehicle warning, the vehicle speed is reduced until the vehicle exits the set dangerous range, the vehicle warning is cancelled, and the vehicle runs normally.
The second embodiment is as follows:
the difference between this embodiment and the first embodiment lies in, first the radar monitoring module in this embodiment not only contains the millimeter wave radar that sets up in vehicle rear both sides, still including installing the millimeter wave radar at vehicle both sides side door, and the detection area extends to the overtaking vehicle including the vehicle both sides.
Secondly, the dangerous range in this embodiment is set according to the relative safe distance between the two vehicles, and as long as the relative distance between the two vehicles is smaller than the set safe distance, the vehicle sends out an alarm signal to remind the rear and the side vehicles to avoid in time, and meanwhile, the driver in the vehicle also pays attention to safety.
The millimeter wave radar in the technical scheme is used for monitoring the blind area, detecting the approaching vehicle behind, and sending an obvious alarm signal when the approaching vehicle approaches the set dangerous range of the vehicle, so that the driver of the vehicle behind can keep the distance between the vehicles and the driving safety is improved; in addition, all install the millimeter wave radar on the rear of a vehicle and both sides side of this car and monitor, not only adjust the rear vehicle and monitor, can also monitor side vehicle simultaneously, avoided the control blind area, improved driving safety.
The above detailed description is provided for the method for alarming rear vehicle approaching according to the embodiment of the present invention, and the technical solution of the present invention is described herein by using specific examples, which are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention.
Claims (7)
1. The alarm method for the rear vehicle approach is characterized in that an alarm system is arranged on a vehicle, the alarm system comprises a radar monitoring module, a computing unit, an alarm control module and an alarm module, and the alarm method comprises the following steps:
step one, setting a dangerous range interval for alarming of the vehicle;
step two, the radar monitoring module monitors whether the rear vehicle enters a monitoring area, and when the rear vehicle is monitored to enter the monitoring area, the radar monitoring module transmits the detected driving data of the rear vehicle to the calculating unit and executes step three;
step three: the calculation unit calculates according to the data detected by the radar and transmits the calculation result to the alarm control unit;
step four, the alarm control module compares the calculation result with a set danger range to judge whether to alarm or not, and executes step five to alarm when the current state of the vehicle enters the danger range;
step five, after the alarm module receives the alarm signal, the alarm module alarms in an obvious way that the rear vehicle can notice, and after the rear vehicle reduces the speed and exits the danger range interval set by the rear vehicle, the step six is executed;
and step six, the alarm control module controls the cancellation of alarm warning.
2. The method of claim 1, wherein the radar monitoring module comprises millimeter-wave radar disposed on both sides of the rear of the vehicle.
3. The method according to claim 2, wherein the radar monitoring module further comprises millimeter wave radars disposed on both sides of the vehicle.
4. The method of claim 3, wherein the monitoring area of the radar monitoring module comprises the area behind the vehicle and the area on both sides of the vehicle.
5. The method according to claim 1, wherein the obvious way that the rear vehicle can notice in the fifth step comprises lighting a brake lamp of the vehicle, lighting an indicator lamp visible for other rear vehicles, and giving an alarm by making a sound audible to a driver of the rear vehicle.
6. The method as claimed in claim 1, wherein the danger range in the first step is set as a range of a predicted collision time of the two vehicles, the predicted collision time being calculated by dividing a relative distance between the two vehicles detected by the radar by a relative vehicle speed.
7. The method according to claim 1, wherein the danger range in the first step is set as a relative safety distance between two vehicles, and the relative distance between two vehicles is detected by a millimeter wave radar at the rear of the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910233258.9A CN111824011A (en) | 2019-03-26 | 2019-03-26 | Alarm method for rear vehicle approaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910233258.9A CN111824011A (en) | 2019-03-26 | 2019-03-26 | Alarm method for rear vehicle approaching |
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| Publication Number | Publication Date |
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| CN111824011A true CN111824011A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910233258.9A Pending CN111824011A (en) | 2019-03-26 | 2019-03-26 | Alarm method for rear vehicle approaching |
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| CN (1) | CN111824011A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112660279A (en) * | 2020-12-31 | 2021-04-16 | 江西商思伏沌科技有限公司 | Electric vehicle driving warning system and method, millimeter wave radar system and electric vehicle |
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| KR20010056479A (en) * | 1999-12-15 | 2001-07-04 | 윤장진 | Apparatus and method for warning accident automatically |
| US6590495B1 (en) * | 2001-12-11 | 2003-07-08 | Iraj Behbehani | Automobile distance warning and alarm system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112660279A (en) * | 2020-12-31 | 2021-04-16 | 江西商思伏沌科技有限公司 | Electric vehicle driving warning system and method, millimeter wave radar system and electric vehicle |
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Application publication date: 20201027 |