CN116691503A - Car early warning device that opens door based on millimeter wave radar - Google Patents

Car early warning device that opens door based on millimeter wave radar Download PDF

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Publication number
CN116691503A
CN116691503A CN202310993350.1A CN202310993350A CN116691503A CN 116691503 A CN116691503 A CN 116691503A CN 202310993350 A CN202310993350 A CN 202310993350A CN 116691503 A CN116691503 A CN 116691503A
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CN
China
Prior art keywords
automobile
door
early warning
millimeter wave
vehicle
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Pending
Application number
CN202310993350.1A
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Chinese (zh)
Inventor
仝盼盼
庚富强
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Zhongke Imaging Zhenjiang Automation Co ltd
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Zhongke Imaging Zhenjiang Automation Co ltd
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Application filed by Zhongke Imaging Zhenjiang Automation Co ltd filed Critical Zhongke Imaging Zhenjiang Automation Co ltd
Priority to CN202310993350.1A priority Critical patent/CN116691503A/en
Publication of CN116691503A publication Critical patent/CN116691503A/en
Pending legal-status Critical Current

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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
    • B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
    • B60Q9/008—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for anti-collision purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
    • B60W40/06—Road conditions
    • B60W40/068—Road friction coefficient
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/72—Power-operated mechanisms for wings with automatic actuation responsive to emergency conditions, e.g. fire
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Electromagnetism (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

The invention discloses an automobile door opening early warning device based on millimeter wave radar, which relates to the field of automobile door opening early warning devices based on millimeter wave radar, and the technical scheme is characterized in that the device comprises: a door state detecting member for sensing whether a handle inside a door of the automobile is opened; a millimeter wave radar for detecting whether a moving object exists in a front-rear preset range where an automobile door is located, and if so, starting to measure a distance L between the moving object and the automobile door 0 The moving speed V of the moving object 1 . Car early warning device that opens door based on millimeter wave radar leads toThe road condition detection module is arranged to identify the road surface condition of the lane where the automobile is located, and the friction resistance applied when the automobile brakes can be automatically obtained, so that the controller can calculate the actual braking distance suitable for the road surface with the road condition, and the self-adaptive adjustment judgment standard function of the door opening early warning device of the automobile is realized.

Description

Car early warning device that opens door based on millimeter wave radar
Technical Field
The invention relates to the technical field of automobile door opening early warning, in particular to an automobile door opening early warning device based on millimeter wave radar.
Background
With the rapid development of economy, the popularization of automobiles brings great convenience to the life of people, but with the increase of the number of automobiles, traffic accidents caused by the automobiles also rise; especially, when a car is parked, a driver or a passenger in the car often opens a door because the road conditions in front and behind the car are not observed in time, thereby causing traffic accidents.
In the related art, in order to reduce the traffic accident caused by opening the door, an automobile enterprise can set an automatic early warning system for opening the door of the automobile on the automobile, which mainly detects the situation around the automobile through a detection radar, recognizes the moving speed and the distance of a moving object around the automobile, judges according to the moving speed and the distance, and if the moving object is in a dangerous range, the automobile enterprise can actively lock the door of the automobile and give corresponding warning to passengers and drivers in the automobile, so that the drivers or passengers in the automobile can be prevented from directly opening the door to get off the automobile, and the traffic accident caused by opening the door can be reduced.
However, the automatic early warning mode for the automobile door of the type described above still has a disadvantage in the actual use process, for example, since the road surface condition of the lane where the automobile is located changes due to weather changes, so that the frictional resistance between the moving object around the automobile and the road surface also changes, such as that in rainy days, the frictional resistance between the road surface and the moving object is smaller than that of a dry road surface, and whether the door can be opened is judged by judging the moving speed of the moving object and the distance between the automobiles, and there is a disadvantage in the judging precision, so that it is necessary to provide an automatic door opening early warning device capable of realizing self-adaptive accurate judgment according to different road surface conditions.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide an automobile door opening early warning device based on millimeter wave radar.
In order to achieve the above object, the present invention provides the following technical solutions, including: a door state detecting member for sensing whether a handle inside a door of the automobile is opened;
millimeter wave radar for detecting a front and rear preset range in which an automobile door is locatedIf a moving object is present, the distance L between the moving object and the vehicle door is measured 0 The moving speed V of the moving object 1 ；
The driving state detection module is used for detecting whether the automobile is in a parking state on a road on which the automobile runs;
the road condition detection module is used for detecting the real-time condition of the road surface of the lane where the automobile is located and automatically acquiring the friction resistance [ mu ] corresponding to the road surface according to the detection result 0 ；
The door lock locking module is used for forcedly locking the door of the automobile;
the early warning module is used for giving a corresponding prompt to a driver or a passenger in the automobile and ready to open the automobile door for getting off;
the controller is used for receiving the detection results uploaded by the driving state detection module and the vehicle door state detection piece and judging whether the vehicle door is to be opened in a parking state of the vehicle, if not, the vehicle door state detection piece continues to detect; the controller starts to calculate the distance between the moving object detected by the millimeter wave radar and the vehicle door after braking by the brake if the moving object is brakedAnd the calculated +.>Distance L to a preset safety distance actually required for the door 1 Comparing if->The controller judges that the door of the vehicle is in a safe state, early warning operation is not required to be executed, and passengers or drivers in the vehicle can directly open corresponding doors to get off the vehicle; if->The controller judges that the vehicle door is in a dangerous state, controls the door lock locking module to lock the corresponding vehicle door, and controls the early warning module to operate so as to warn a driver or a passenger in the vehicle not to open the vehicle doorThe vehicle door is taken off.
Preferably, the door state detecting member includes at least four pressure sensors, and the four pressure sensors are correspondingly installed at the inner handle positions of the automobile door.
Preferably, the millimeter wave radar is three in number and is respectively arranged at the middle positions of the two rearview mirrors of the automobile and the automobile tail bumper.
Preferably, the driving state detection module comprises at least one distance sensor, the distance sensor is installed at the position of the gear lever of the automobile, and whether the automobile is in a parking state is determined by detecting the position of the gear lever in real time through the distance sensor.
Preferably, the road condition detection module comprises at least one camera and a picture identification unit, the camera is fixedly arranged on a chassis of the automobile, a picture of the road surface condition of the automobile is taken in real time through the camera, the picture is uploaded to the picture identification unit, and the information of the taken road surface picture is identified and acquired through the picture identification unit, so that the road surface condition is judged.
Preferably, the early warning module comprises an LED lamp and a buzzer, and when the early warning module is started, the early warning prompt generated by the early warning module is the flickering of the LED lamp and the sounding of the buzzer.
Preferably g is the gravitational acceleration, t 0 Is the normal reaction time of human body.
A method for early warning of automobile door opening based on millimeter wave radar comprises the following operation steps:
s1, detecting the running state of an automobile and the state of a door through the running state detection module and the door state detection piece, and transmitting the detection result back to the controller;
s2, judging whether a vehicle door is to be opened in a parking state of the vehicle through the controller, if not, continuing to execute the S1, and if so, executing the S3;
s3, detecting whether a moving object exists in a front-back preset range where the automobile door is located through the millimeter wave radar, if not, continuing to executeS3, if so, starting to measure the distance L between the moving object and the vehicle door 0 The moving speed V of the moving object 1 ；
S4, detecting the real-time condition of the road surface of the lane where the automobile is located through the road condition detection module, and obtaining the friction resistance [ mu ] corresponding to the road surface according to the detection result 0 ；
S5, the controller starts to calculate the distance between the automobile door and the moving object when the automobile door is opened；
S6, willDistance L to a preset safety distance actually required for the door 1 Comparing if->A passenger or a driver in the vehicle can directly open the corresponding vehicle door to get off the vehicle; if->The controller controls the door lock locking module to lock the corresponding door and controls the early warning module to operate so as to warn a driver or a passenger in the car not to open the door to get off the car.
Compared with the prior art, the invention has the following beneficial effects:
(1) The automatic early warning function of the door opening of the automobile is realized through the cooperation of the automobile door state detection part, the millimeter wave radar, the driving state detection module, the road condition detection module, the door lock locking module, the early warning module and the controller, after the early warning state is triggered, the early warning module and the door lock locking module are used for respectively executing warning and door lock locking operation, so that personnel in the automobile can know the external situation of the automobile in time, the passengers in the automobile can be prevented from opening the automobile door under dangerous conditions, and traffic accidents caused by the opening of the automobile door can be avoided;
(2) The road condition detection module is arranged to identify the road surface condition of the lane where the automobile is located, and the friction resistance applied when the automobile brakes can be automatically obtained, so that the controller can calculate the actual braking distance suitable for the road surface with the condition, the self-adaptive adjustment judgment standard function of the automobile door opening early warning device is realized, the accuracy of judging whether the automobile door opening is influenced by the moving object outside the automobile is improved, and the aim of improving the safety of the automobile door opening early warning device is fulfilled.
Drawings
FIG. 1 is a block diagram of an automobile door opening early warning device based on millimeter wave radar;
fig. 2 is a logic block diagram of a method for early warning of an automobile door opening based on millimeter wave radar.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
An embodiment of an automobile door opening early warning device based on millimeter wave radar is further described with reference to fig. 1.
An automobile door opening early warning device based on millimeter wave radar, comprising: the door state detection piece is used for sensing whether a handle on the inner side of a door of the automobile is to be opened or not, and comprises at least four pressure sensors which are correspondingly arranged on the handle on the inner side of the door of the automobile, wherein the pressure sensors are in the prior art and are not described in detail herein;
a millimeter wave radar for detecting whether a moving object exists in a front-rear preset range where an automobile door is located, and if so, starting to measure a distance L between the moving object and the automobile door 0 The moving speed V of the moving object 1 The millimeter wave radar is three in number and is respectively arranged at the middle positions of two rearview mirrors of an automobile and a bumper at the tail part of the automobile, so that the front and rear positions of the automobile can be effectively covered, the omnibearing detection function of moving objects around the automobile is realized, and the positions of the front and rear doors are different, so that the front and rear doors and external moving objects are required to be respectively measuredThe distance of the body, the millimeter wave radar belongs to the prior art, and is not described in detail herein;
the driving state detection module is used for detecting whether the automobile is in a parking state on a road on which the automobile runs, and comprises at least one distance sensor, wherein the distance sensor is arranged at the position of a gear lever of the automobile, and the position of the gear lever is detected in real time through the distance sensor to determine whether the automobile is in the parking state;
the road condition detection module is used for detecting the real-time condition of the road surface of the lane where the automobile is located and automatically acquiring the friction resistance [ mu ] corresponding to the road surface according to the detection result 0 The road condition detection module comprises at least one camera and a picture identification unit, wherein the camera is fixedly arranged on a chassis of the automobile, photographs of road conditions of the automobile are taken in real time through the camera and are uploaded to the picture identification unit, the photographed road photographs are identified and obtained through the picture identification unit, road conditions are judged, and the set road conditions generally comprise dry road surfaces, rainy road surfaces, snowy road surfaces and frozen road surfaces;
through experiments, the friction resistance corresponding to different road conditions is generally as follows:
the door lock locking module is used for forcedly locking the door of the automobile, the door lock locking module and the door lock are mutually independent, the door lock locking module is used only when the door is opened in a dangerous state, normal use of the door lock cannot be affected, after the door is locked by the door lock locking module, people inside and outside the automobile cannot open the door by opening a door handle, in addition, the door lock locking module is matched with the driving state detection module, when the automobile is detected to be in a driving state, the door lock locking module can be triggered to lock the door when the automobile is to be opened, and therefore safety of the automobile in the driving process is improved;
the early warning module is used for giving corresponding reminding of a driver or a passenger in the automobile and ready to open the automobile door for getting off, and comprises an LED lamp and a buzzer, when the early warning module is started, the early warning prompt generated by the early warning module is the flashing of the LED lamp, and the sounding of the buzzer plays a role in warning in sound sense and vision together, so that the personnel in the automobile can easily know the condition that the automobile door cannot be opened;
the controller is connected with the vehicle door state detection piece, the millimeter wave radar, the driving state detection module, the road condition detection module, the door locking module and the early warning module through wireless signals or electrically and is used for receiving the detection results uploaded by the driving state detection module and the vehicle door state detection piece and judging whether the vehicle door is about to be opened in a parking state or not, and if not, the vehicle door state detection piece continues to detect; if so, the controller starts to calculate the distance between the moving object detected by the millimeter wave radar and the vehicle door after braking by the brakeAnd the calculated +.>Distance L to a preset safety distance actually required for the door 1 Comparing if->The controller judges that the door of the vehicle is in a safe state, early warning operation is not required to be executed, and passengers or drivers in the vehicle can directly open corresponding doors to get off the vehicle; if->The controller judges that the vehicle door is in a dangerous state, then the door lock locking module is controlled to lock the corresponding vehicle door, and the early warning module is controlled to operate so as to warn a driver or a passenger in the vehicle not to open the vehicle door to get off, g is gravity acceleration, and 9.8m/s is taken 2 ，t 0 For normal response time of human body, which is generally above 0.2s, an average value of 0.3s is taken in the present embodiment, and in the above formula, < >>In order to ensure that the distance between the moving object and the automobile door is kept after braking, it can be understood that braking measures are taken for emergency braking in order to avoid collision after the moving object sees that the automobile door is opened; in the calculation formula, the actual condition of the road surface and the reaction time of people are considered, the detected moving object is considered as a vehicle because the vehicle always runs and parks on the road, the vehicle can be an automobile, an electric vehicle and a bicycle, and the brake distance required by the braking of the automobile is furthest, so the brake distance of the automobile is uniformly calculated, and the brake distance of the automobile is uniformly calculated, thus the vehicle is calculated>Is the minimum value, at the same time as L 1 The result of the comparison represents a safer case, where L 1 The L is the distance which is required by the opening of the automobile door and can ensure the normal opening of the automobile door and can not collide with a moving object 1 Generally above 1m,/and->For the braking distance of the automobile, it can be seen that the braking distance of the automobile is related to the speed of the automobile and the friction resistance received by the automobile, so that the braking distance of the automobile is different on road surfaces with different conditions, and in addition, V 1 t 0 When the automobile is seen to be opened, the distance of the automobile moving in the reaction time is made, so that the automobile door opening early warning device provided by the invention recognizes the road surface condition of the lane where the automobile is located by arranging the road condition detection module, and can automatically acquire the friction resistance applied to the automobile during braking, and the actual braking distance suitable for the road surface with the various conditions can be obtained, so that the automobile door opening early warning device has the function of self-adaptive adjustment judgment standard, is beneficial to improving the accuracy of judging whether the automobile door opening is influenced by the moving object outside the automobile, and achieves the aim of improving the safety of the automobile door opening early warning device.
In addition, referring to fig. 2 in combination, the invention also provides a method for early warning of the door opening of the automobile based on millimeter wave radar, which comprises the following operation steps:
s1, detecting the running state of an automobile and the state of a door through a driving state detection module and a door state detection piece, and transmitting the detection result back to a controller;
s2, judging whether a vehicle door is to be opened in a parking state by the controller, if not, continuing to execute the S1, and if so, executing the S3;
s3, detecting whether a moving object exists in a front preset range and a rear preset range of the automobile door through a millimeter wave radar, if not, continuing to execute the S3, and if so, starting to measure the distance L between the moving object and the automobile door 0 The moving speed V of the moving object 1 ；
S4, detecting the real-time condition of the road surface of the lane where the automobile is located through a road condition detection module, and obtaining the friction resistance [ mu ] corresponding to the road surface according to the detection result 0 ；
S5, the controller starts to calculate the distance between the automobile door and the moving object when the automobile door is opened；
S6, willDistance L to a preset safety distance actually required for the door 1 Comparing if->A passenger or a driver in the vehicle can directly open the corresponding vehicle door to get off the vehicle; if->The controller controls the door lock locking module to lock the corresponding door and controls the early warning module to operate so as to warn a driver or a passenger in the car not to open the door to get off the car.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining a "second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims (8)

1. An automobile door opening early warning device based on millimeter wave radar, which is characterized by comprising:
a door state detecting member for sensing whether a handle inside a door of the automobile is to be opened;
a millimeter wave radar for detecting whether a moving object exists in a front-rear preset range where an automobile door is located, and if so, starting to measure a distance L between the moving object and the automobile door 0 The moving speed V of the moving object 1 ；
The driving state detection module is used for detecting whether the automobile is in a parking state on a road on which the automobile runs;
the road condition detection module is used for detecting the real-time condition of the road surface of the lane where the automobile is located and automatically acquiring the friction resistance [ mu ] corresponding to the road surface according to the detection result 0 ；
The door lock locking module is used for forcedly locking the door of the automobile;
the early warning module is used for giving a corresponding prompt to a driver or a passenger in the automobile and ready to open the automobile door for getting off;
the controller is used for receiving the detection results uploaded by the driving state detection module and the vehicle door state detection piece and judging whether the vehicle door is to be opened in a parking state of the vehicle, if not, the vehicle door state detection piece continues to detect; the controller starts to calculate the distance between the moving object detected by the millimeter wave radar and the vehicle door after braking by the brake if the moving object is brakedAnd the calculated +.>Distance L to a preset safety distance actually required for the door 1 Comparing if->The controller judges that the door of the vehicle is in a safe state, early warning operation is not required to be executed, and passengers or drivers in the vehicle can directly open corresponding doors to get off the vehicle; if->And the controller judges that the vehicle door is in a dangerous state, controls the door lock locking module to lock the corresponding vehicle door, and controls the early warning module to operate so as to warn a driver or a passenger in the vehicle not to open the vehicle door to get off the vehicle.
2. The millimeter wave radar-based vehicle door opening warning device according to claim 1, wherein the door state detecting member includes at least four pressure sensors, the four pressure sensors being correspondingly installed at the inner handle positions of the vehicle door.
3. The millimeter wave radar-based automobile door opening early warning device according to claim 1, wherein the millimeter wave radar is three in number and is respectively arranged at the middle positions of the two rearview mirrors of the automobile and the automobile tail bumper.
4. The millimeter wave radar-based automobile door opening early warning device according to claim 1, wherein the driving state detection module comprises at least one distance sensor, the distance sensor is installed at the position of the automobile gear lever, and whether the automobile is in a parking state is determined by detecting the position of the gear lever in real time through the distance sensor.
5. The millimeter wave radar-based automobile door opening early warning device according to claim 1, wherein the road condition detection module comprises at least one camera and a picture recognition unit, the camera is fixedly installed on a chassis of an automobile, a picture of the road surface condition of the automobile is taken in real time through the camera and is uploaded to the picture recognition unit, and the information of the taken road surface picture is recognized and obtained through the picture recognition unit, so that the road surface condition is judged.
6. The millimeter wave radar-based automobile door opening early warning device according to claim 1, wherein the early warning module comprises an LED lamp and a buzzer, and when the early warning module is started, an early warning prompt generated by the early warning module is the flashing of the LED lamp and the sounding of the buzzer.
7. The millimeter wave radar-based automobile door opening early warning device according to claim 1, wherein g is a gravitational acceleration, t 0 Is the normal reaction time of human body.
8. A method for early warning of the opening of an automobile door based on millimeter wave radar, comprising the early warning device for the opening of an automobile door based on millimeter wave radar as set forth in any one of claims 1 to 7, characterized by comprising the following steps:
s1, detecting the running state of an automobile and the state of the automobile door through the running state detection module and the automobile door state detection piece, and transmitting the detection result back to the controller;
s2, judging whether a vehicle door is to be opened in a parking state of the vehicle through the controller, if not, continuing to execute the S1, and if so, executing the S3;
s3, detecting whether a moving object exists in a front-rear preset range where the automobile door is located through the millimeter wave radar, if not, continuing to execute the S3, and if so, starting to measure the distance L between the moving object and the automobile door 0 The moving speed V of the moving object 1 ；
S4, detecting the real-time condition of the road surface of the lane where the automobile is located through the road condition detection module, and obtaining the friction resistance [ mu ] corresponding to the road surface according to the detection result 0 ；
S5, the controller starts to calculate the distance between the automobile door and the moving object when the automobile door is opened；
S6, willDistance L to a preset safety distance actually required for the door 1 Comparing if->A passenger or a driver in the vehicle can directly open the corresponding vehicle door to get off the vehicle; if->The controller controls the door lock locking module to lock the corresponding door and controls the early warning module to operate so as to warn a driver or a passenger in the car not to open the door to get off the car.
CN202310993350.1A 2023-08-09 2023-08-09 Car early warning device that opens door based on millimeter wave radar Pending CN116691503A (en)

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CN202310993350.1A CN116691503A (en) 2023-08-09 2023-08-09 Car early warning device that opens door based on millimeter wave radar

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CN202310993350.1A CN116691503A (en) 2023-08-09 2023-08-09 Car early warning device that opens door based on millimeter wave radar

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Citations (5)

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Publication number Priority date Publication date Assignee Title
CN110588518A (en) * 2019-09-24 2019-12-20 上海为彪汽配制造有限公司 Automobile rear detection system and method and radar control box
CN112248933A (en) * 2020-10-28 2021-01-22 上海博泰悦臻电子设备制造有限公司 Control method and device for preventing collision of vehicle door and computer storage medium
CN113043950A (en) * 2020-07-31 2021-06-29 惠州华阳通用电子有限公司 Vehicle door opening early warning method based on single-transmitting single-receiving radar
CN216734065U (en) * 2022-01-13 2022-06-14 南京工程学院 Automatic anti-collision device for automobile door opening
CN218287576U (en) * 2022-10-19 2023-01-13 重庆长安新能源汽车科技有限公司 Door opening early warning system of vehicle and vehicle with same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110588518A (en) * 2019-09-24 2019-12-20 上海为彪汽配制造有限公司 Automobile rear detection system and method and radar control box
CN113043950A (en) * 2020-07-31 2021-06-29 惠州华阳通用电子有限公司 Vehicle door opening early warning method based on single-transmitting single-receiving radar
CN112248933A (en) * 2020-10-28 2021-01-22 上海博泰悦臻电子设备制造有限公司 Control method and device for preventing collision of vehicle door and computer storage medium
CN216734065U (en) * 2022-01-13 2022-06-14 南京工程学院 Automatic anti-collision device for automobile door opening
CN218287576U (en) * 2022-10-19 2023-01-13 重庆长安新能源汽车科技有限公司 Door opening early warning system of vehicle and vehicle with same

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