CN116953726A - Vehicle-mounted early warning equipment and vehicle - Google Patents
Vehicle-mounted early warning equipment and vehicle Download PDFInfo
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- CN116953726A CN116953726A CN202310737391.4A CN202310737391A CN116953726A CN 116953726 A CN116953726 A CN 116953726A CN 202310737391 A CN202310737391 A CN 202310737391A CN 116953726 A CN116953726 A CN 116953726A
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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
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
- B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
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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
- B60Q1/503—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 using luminous text or symbol displays in or on the vehicle, e.g. static text
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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
- B60Q1/535—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 to prevent rear-end collisions, e.g. by indicating safety distance at the rear of the vehicle
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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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/50—Systems of measurement based on relative movement of target
- G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
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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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
- G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Traffic Control Systems (AREA)
Abstract
The embodiment of the invention discloses vehicle-mounted early warning equipment and a vehicle, and relates to the technical field of traffic safety. The vehicle-mounted early warning device comprises a main control circuit board, a laser radar and an alarm module; the main control circuit board is electrically connected with the laser radar and the alarm module respectively; the laser radar is used for transmitting a first laser signal to the direction of a second vehicle and recording a first moment of transmitting the first laser signal; receiving a second laser signal reflected by a second vehicle, and recording a second moment of receiving the second laser signal; the first moment and the second moment are sent to a main control circuit board; the main control circuit board is used for calculating the real-time distance between the second vehicle and the first vehicle based on the first moment, the second moment and the laser signal transmission speed; judging whether the real-time interval is smaller than a first preset value, if so, sending a first alarm signal to an alarm module; the alarm module is used for sending out first alarm information based on the first alarm signal. The embodiment of the invention is applied to the scene of vehicle driving safety detection.
Description
Technical Field
The invention relates to the technical field of traffic safety, in particular to vehicle-mounted early warning equipment and a vehicle.
Background
In order to ensure the driving safety of a vehicle, a vehicle-mounted early warning device is usually installed in the vehicle, and the radar type of the currently used vehicle-mounted early warning device is usually an ultrasonic radar. The ultrasonic radar has the characteristic of large detection angle, so the ultrasonic radar has the defect of easy interference. For example, when detecting other vehicles in the same lane as the host vehicle using an on-vehicle ultrasonic radar, the other vehicles in the other lanes are easily disturbed, thereby reducing the detection accuracy of the on-vehicle warning device. In addition, since the ultrasonic signal decays faster during transmission, there is a disadvantage in that the measurement distance is closer.
Therefore, how to improve the detection accuracy and the measurement distance of the vehicle-mounted early warning device becomes a technical problem to be solved.
Disclosure of Invention
In view of the above, the embodiment of the invention provides a vehicle-mounted early warning device and a vehicle, which can improve the detection accuracy and the measurement distance of the vehicle-mounted early warning device.
In a first aspect, an embodiment of the present invention provides a vehicle-mounted early warning device, where the vehicle-mounted early warning device is configured to be installed at a rear portion of a first vehicle; the vehicle-mounted early warning equipment comprises a main control circuit board, a laser radar and an alarm module; the main control circuit board is electrically connected with the laser radar and the alarm module respectively; the laser radar is used for transmitting a first laser signal to the direction of a second vehicle and recording a first moment for transmitting the first laser signal; receiving a second laser signal reflected by the second vehicle, and recording a second moment of receiving the second laser signal; transmitting the first moment and the second moment to the main control circuit board; wherein the second vehicle is located rearward of the first vehicle; the main control circuit board is used for calculating the real-time distance between the second vehicle and the first vehicle based on the first moment, the second moment and the laser signal transmission speed; judging whether the real-time interval is smaller than a first preset value, if yes, sending a first alarm signal to the alarm module; the alarm module is used for sending out first alarm information based on the first alarm signal.
Optionally, the main control circuit board is further configured to obtain real-time speed information of the first vehicle; determining the relative speed of the second vehicle relative to the first vehicle according to the real-time interval and the corresponding time information; determining a real-time speed of the second vehicle according to the relative speed and the real-time speed information of the first vehicle; judging whether the real-time speed of the second vehicle is greater than a second preset value, if so, sending a second alarm signal to the alarm module; correspondingly, the alarm module is also used for sending out second alarm information based on the second alarm signal.
Optionally, the main control circuit board includes a first interface; the first interface is used for being electrically connected with a speed measuring module in the first vehicle; the main control circuit board is also used for receiving the real-time speed information of the first vehicle sent by the speed measuring module through the first interface.
Optionally, the vehicle-mounted early warning device further comprises a positioning module; the positioning module is electrically connected with the main control circuit board; the positioning module is used for sending real-time position information of the first vehicle to the main control circuit board; the main control circuit board is used for determining real-time speed information of the first vehicle based on the real-time position information of the first vehicle and corresponding time information.
Optionally, the alarm module is an alarm display screen; correspondingly, the first alarm information is prompt text information displayed on the alarm display screen.
Optionally, the vehicle-mounted early warning device further comprises a rear anti-collision buffer device; the rear anti-collision buffer device is electrically connected with the main control circuit board; the main control circuit board is further used for sending a dangerous state signal to the rear anti-collision buffer device when the real-time distance is smaller than the first preset value and the real-time speed of the second vehicle is larger than the second preset value; the rear bump buffer is used for responding to the dangerous state signal and executing corresponding operation so as to switch to a bump buffer state.
Optionally, the rear crash cushion apparatus includes: an inflator and an airbag; the air bag is connected with an inflation inlet of the inflation device, and the inflation device is electrically connected with the main control circuit board.
In a second aspect, an embodiment of the present invention provides a vehicle, which is characterized by comprising a vehicle body, wherein the vehicle body is provided with a vehicle-mounted early warning device, and the vehicle-mounted early warning device is any one of the vehicle-mounted early warning devices.
Optionally, an automatic driving module is further installed on the vehicle body, and the main control circuit board is electrically connected with the automatic driving module; the main control circuit board is also used for sending a rear collision avoidance control signal to the automatic driving module when the real-time distance is smaller than a first preset value and the real-time speed of the second vehicle is larger than a second preset value; the automatic driving module is used for responding to the rear collision avoidance control signal and controlling the vehicle to accelerate forward or change the road.
Optionally, a prompt module is further installed in the cab of the vehicle body, and the prompt module is electrically connected with the main control circuit board; the main control circuit board is also used for sending a prompt signal to the prompt module when the real-time distance is smaller than a first preset value and the real-time speed of the second vehicle is larger than a second preset value; the prompt module is used for responding to the prompt signal and sending prompt information to a driver.
The vehicle-mounted early warning device and the vehicle provided by the embodiment of the invention are used for being installed at the rear part of a first vehicle; the vehicle-mounted early warning equipment comprises a main control circuit board, a laser radar and an alarm module; the main control circuit board is electrically connected with the laser radar and the alarm module respectively; the laser radar is used for transmitting a first laser signal to the direction of a second vehicle and recording a first moment for transmitting the first laser signal; receiving a second laser signal reflected by the second vehicle, and recording a second moment of receiving the second laser signal; transmitting the first moment and the second moment to the main control circuit board; wherein the second vehicle is located rearward of the first vehicle; the main control circuit board is used for calculating the real-time distance between the second vehicle and the first vehicle based on the first moment, the second moment and the laser signal transmission speed; judging whether the real-time interval is smaller than a first preset value, if yes, sending a first alarm signal to the alarm module; the alarm module is used for sending out first alarm information based on the first alarm signal. Therefore, since the laser signal emitted by the laser radar has the characteristic of good directivity, when the laser radar is adopted to detect the real-time distance between the second vehicle in the same lane and the vehicle, the laser signal is not easy to be interfered by vehicles in other lanes, and therefore the detection accuracy of the vehicle-mounted early warning equipment is improved. Meanwhile, the laser signal is slower in attenuation in the transmission process compared with the ultrasonic signal, so that the measuring distance is longer. Therefore, the embodiment of the invention can improve the detection accuracy and the measurement distance of the vehicle-mounted early warning equipment.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a vehicle-mounted early warning device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a vehicle according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In a first aspect, as shown in fig. 1, an embodiment of the present invention provides a vehicle-mounted early warning device 1 for being mounted at a rear portion of a first vehicle; the vehicle-mounted early warning device comprises a main control circuit board 11, a laser radar 12 and an alarm module 13; the main control circuit board 11 is electrically connected with the laser radar 12 and the alarm module 13 respectively; the laser radar 12 is configured to transmit a first laser signal to a direction in which a second vehicle is located, and record a first time of transmitting the first laser signal; receiving a second laser signal reflected by the second vehicle, and recording a second moment of receiving the second laser signal; the first moment and the second moment are sent to the main control circuit board 11; wherein the second vehicle is located rearward of the first vehicle; the main control circuit board 11 is configured to calculate a real-time distance between the second vehicle and the first vehicle based on the first time, the second time, and a laser signal transmission speed; judging whether the real-time interval is smaller than a first preset value, if yes, sending a first alarm signal to the alarm module; the alarm module 13 is configured to send out first alarm information based on the first alarm signal.
The laser radar consists of a transmitting system, a receiving system and an information processing system. The laser radar works on the principle that the transmitting system transmits electric pulses into light pulses, and the light pulses scatter in all directions after reaching the surface of an object to be measured. The receiving system receives part of scattered light energy and converts the scattered light energy into an electric signal, and the information processing system can calculate the distance of the object to be tested according to the transmitting time information and the receiving time information of the light pulse.
Specifically, in the embodiment of the present invention, the vehicle-mounted early warning apparatus 1 is configured to be mounted at the rear of the first vehicle, for example, may be mounted inside a rear window glass of the first vehicle. The laser radars can be classified into one-dimensional laser radars, two-dimensional laser radars, and three-dimensional laser radars according to the use scene. The one-dimensional laser radar is mainly used for measuring distance and speed; the two-dimensional laser radar is mainly used for object contour measurement, area monitoring and the like; three-dimensional lidar is mainly used for modeling three-dimensional space in real time. The lidar 12 in embodiments of the present invention may be a one-dimensional lidar.
During the traveling of the first vehicle, the lidar 12 may emit the first laser signal backward at a certain frequency (e.g., 1000 times/second) and record the time T1 at which the first laser signal is emitted. After reaching a second vehicle adjacent to the first vehicle on the same lane, the first laser signal is reflected by the surface of the second vehicle and scattered in all directions. After the lidar 12 receives a portion of the scattered signal (i.e., the second laser signal), the time at which the second laser signal was received is recorded as T2. T1 and T2 are formed in groups, the time difference between T2 and T1 represents the transmission time of the laser, and the transmission speed of the laser signal is constant. Therefore, after receiving the time T1 of transmitting the first laser signal and the time T2 of receiving the second laser signal, the main control circuit board 11 may divide the multiplication of the time difference between T2 and T1 and the transmission speed of the laser beam by 2, thereby obtaining the distance between the second vehicle and the first vehicle. The main control circuit board 11 continuously determines whether the real-time distance between the second vehicle and the first vehicle is smaller than a first preset value (for example, 20 meters). If the vehicle is smaller than the first vehicle, the second vehicle is too close to the first vehicle, and the rear-end collision is dangerous. The main control circuit board 11 can send a first alarm signal to the alarm module 13 through the communication connection line, and the alarm module 13 can send alarm information in the form of sound, text or optical signals after receiving the first alarm signal so as to remind the driver in the second vehicle of paying attention to the current rear-end collision risk.
Because the laser signal emitted by the laser radar has the characteristic of good directivity, when the laser radar is adopted to detect the real-time distance between a second vehicle in the same lane and the vehicle, the laser signal is not easy to be interfered by vehicles in other lanes, thereby improving the detection accuracy of the vehicle-mounted early warning equipment. Meanwhile, the laser signal is slower in attenuation in the transmission process compared with the ultrasonic signal, so that the measuring distance is longer. Therefore, the embodiment of the invention can improve the detection accuracy and the measurement distance of the vehicle-mounted early warning equipment.
Optionally, in an embodiment of the present invention, the main control circuit board 11 is further configured to obtain real-time speed information of the first vehicle; determining the relative speed of the second vehicle relative to the first vehicle according to the real-time interval and the corresponding time information; determining a real-time speed of the second vehicle according to the relative speed and the real-time speed information of the first vehicle; judging whether the real-time speed of the second vehicle is greater than a second preset value, if so, sending a second alarm signal to the alarm module 13; correspondingly, the alarm module 13 is further configured to send out second alarm information based on the second alarm signal.
In the embodiment of the present invention, first, the main control circuit board 11 may acquire real-time speed information of the first vehicle. Then, the main control circuit board 11 may also determine that the relative speed of the second vehicle with respect to the first vehicle is (D2-D1)/(T4-T2) based on the real-time distance D1 at the time T2 and the real-time distance D2 at the time T4. Finally, the main control circuit board 11 can use the real-time speed of the first vehicle to subtract the relative speed, so as to calculate the real-time speed of the second vehicle.
The main control circuit board 11 may further determine whether the real-time speed of the second vehicle is greater than a second preset value (for example, 25 m/s), and if so, indicate that the second vehicle is too fast, and there is a rear-end collision risk. Therefore, the main control circuit board 11 can send the second alarm signal to the alarm module 13 through the communication connection line, and the alarm module 13 can send alarm information in the form of sound, text or light signals after receiving the second alarm signal, so as to remind the driver in the second vehicle of paying attention to the current rear-end collision risk.
Alternatively, in one embodiment of the present invention, the main control circuit board 11 may include a first interface; the first interface is used for being electrically connected with a speed measuring module in the first vehicle; the main control circuit board 11 is further configured to receive real-time speed information of the first vehicle sent by the speed measurement module through the first interface.
In the embodiment of the present invention, the main control circuit board 11 may be specifically provided with a first interface, and the first interface may be specifically a serial communication interface. The first interface may be electrically connected to an existing speed measurement module in the first vehicle, and the main control circuit board 11 may receive real-time speed information of the first vehicle sent by the speed measurement module through the first interface. The method utilizes the existing speed measuring module in the first vehicle, and has the advantages of simple connection mode, reliable communication data and low cost.
Optionally, in an embodiment of the present invention, the vehicle-mounted early warning device further includes a positioning module; the positioning module is electrically connected with the main control circuit board 11; the positioning module is used for sending real-time position information of the first vehicle to the main control circuit board 11; the main control circuit board 11 is configured to determine real-time speed information of the first vehicle based on the real-time position information of the first vehicle and corresponding time information.
In the embodiment of the invention, the vehicle-mounted early warning device may further include a positioning module electrically connected with the main control circuit board 11. In particular, the positioning module may be a global positioning system (Global Positioning System, GPS) module, which is a satellite-based positioning system for high-precision radio navigation, capable of providing accurate geographic location information anywhere in the world and in the near-earth space.
The positioning module may send real-time location information of the first vehicle to the main control circuit board 11 at a certain frequency (for example, 100 times/second). Then, the main control circuit board 11 may also determine the distance a traveled by the first vehicle within the period of time (T4-T2) based on the real-time position L1 of the first vehicle at the time T2 and the real-time position L2 of the first vehicle at the time T4. Further, the distance A may be divided by (T4-T2) to calculate the real-time speed of the first vehicle over the period of time.
Optionally, in one embodiment of the present invention, the alarm module 13 is an alarm display screen; correspondingly, the first alarm information is prompt text information displayed on the alarm display screen.
In this embodiment of the present invention, the alarm module 13 may be an alarm display screen, and after receiving the first alarm signal sent by the main control circuit board, the alarm display screen may display text information on the alarm display screen in a striking manner, so as to remind the driver in the second vehicle of a possible dangerous situation. For example, "distance too close, danger-! "this text information".
Optionally, in an embodiment of the present invention, the vehicle-mounted early warning device further includes a rear anti-collision buffer device; the rear anti-collision buffer device is electrically connected with the main control circuit board 11; the main control circuit board 11 is further configured to send a dangerous state signal to the rear anti-collision buffer device when the real-time distance is smaller than the first preset value and the real-time speed of the second vehicle is greater than the second preset value; the rear bump buffer is used for responding to the dangerous state signal and executing corresponding operation so as to switch to a bump buffer state.
In the embodiment of the present invention, the vehicle-mounted early warning device may further include a rear crash-proof buffer device, which may be electrically connected to the main control circuit board 11, and may be disposed at a position where the rear of the first vehicle is likely to be rear-end impacted by the second vehicle. When the real-time distance is detected to be smaller than the first preset value and the real-time speed of the second vehicle is detected to be larger than the second preset value, the main control circuit board 11 indicates that rear-end collision danger exists. In order to reduce damage to the first vehicle and the second vehicle caused by a possible rear-end collision accident, the main control circuit board 11 may transmit a dangerous state signal to the rear crumple device, and after the rear crumple device receives the dangerous state signal, a corresponding operation may be performed so as to switch to a crumple state.
Alternatively, in one embodiment of the present invention, the rear impact buffering device may include: an inflator and an airbag; the air bag is connected with an inflation inlet of the inflation device, and the inflation device is electrically connected with the main control circuit board 11.
In an embodiment of the present invention, the rear impact buffering device may include: the air bag can be connected with an inflation inlet of the air bag, and the air bag is electrically connected with the main control circuit board 11. After receiving the dangerous state signal sent by the main control circuit board 11, the air charging device can start the air charging function, rapidly charge the air bag through the air charging port, and place the air bag at a position where the first vehicle is likely to be impacted by the second vehicle. If the second vehicle and the first vehicle have a rear-end collision accident, the air bag in the inflated state can effectively reduce the damage to the first vehicle and the second vehicle caused by collision.
In a second aspect, as shown in fig. 2, an embodiment of the present invention provides a vehicle, including a vehicle body 2, where the vehicle body 2 is equipped with a vehicle-mounted early warning device 1, and the vehicle-mounted early warning device 1 is any of the foregoing vehicle-mounted early warning devices.
The vehicle provided by the embodiment of the invention comprises a vehicle body 2, wherein any vehicle-mounted early warning device 1 provided in the embodiment of the invention of the first aspect is mounted on the vehicle body 2. The vehicle-mounted early warning device 1 in the embodiment of the present invention may detect the real-time distance between the vehicle and other vehicles in the same lane behind the vehicle, and its implementation principle and technical details are described in detail in the foregoing embodiment of the first aspect of the present invention, which is not described herein again.
Because the laser signal emitted by the laser radar has the characteristic of good directivity, when the laser radar is adopted to detect the real-time distance between a second vehicle in the same lane and the vehicle, the laser signal is not easy to be interfered by vehicles in other lanes, thereby improving the detection accuracy of the vehicle-mounted early warning equipment. Meanwhile, the laser signal is slower in attenuation in the transmission process compared with the ultrasonic signal, so that the measuring distance is longer. Therefore, the embodiment of the invention can improve the detection accuracy and the measurement distance of the vehicle-mounted early warning equipment.
Optionally, in one embodiment of the present invention, an autopilot module is further installed on the vehicle body 2, and the main control circuit board 11 is electrically connected to the autopilot module; the main control circuit board 11 is further configured to send a rear collision avoidance control signal to the autopilot module when the real-time distance is smaller than a first preset value and the real-time speed of the second vehicle is greater than a second preset value; the automatic driving module is used for responding to the rear collision avoidance control signal and controlling the vehicle to accelerate forward or change the road.
In the embodiment of the present invention, an autopilot module may also be mounted on the vehicle body 2, and the main control circuit board 11 is electrically connected with the autopilot module. When detecting that the real-time distance from the second vehicle to the vehicle (simply referred to as the first vehicle) provided by the embodiment of the present invention is smaller than the first preset value, and the real-time speed of the second vehicle is larger than the second preset value, the main control circuit board 11 indicates that there is a rear-end collision risk. In order to avoid the rear-end collision accident, the main control circuit board 11 may send a rear collision avoidance control signal to the autopilot module through a communication line, and the autopilot module may control the first vehicle to accelerate forward or change lane after receiving the rear collision avoidance control signal, so that the rear-end collision accident may be avoided.
Optionally, in an embodiment of the present invention, a prompt module is further installed in the cab of the vehicle body 2, and the prompt module is electrically connected to the main control circuit board 11; the main control circuit board 11 is further configured to send a prompt signal to the prompt module when the real-time distance is smaller than a first preset value and the real-time speed of the second vehicle is greater than a second preset value; the prompt module is used for responding to the prompt signal and sending prompt information to a driver.
In the embodiment of the invention, a prompt module is also installed in the cab of the vehicle body 2, and the prompt module is electrically connected with the main control circuit board 11. The main control circuit board 11 indicates that there is a rear-end collision risk when detecting that the real-time distance from the second vehicle to the first vehicle is smaller than a first preset value and the real-time speed of the second vehicle is larger than a second preset value. In order to avoid the rear-end collision accident, the main control circuit board 11 may send a prompt signal to the prompt module through the communication line, and the prompt module may send an alarm message in the form of sound, text or optical signal after receiving the prompt signal, so as to remind the driver in the first vehicle to pay attention to the current rear-end collision risk.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the embodiment of the invention, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, a and/or B can be expressed as follows: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
For convenience of description, the above apparatus is described as being functionally divided into various units/modules, respectively. Of course, the functions of the various elements/modules may be implemented in the same piece or pieces of software and/or hardware when implementing the present invention.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. The vehicle-mounted early warning device is characterized by being arranged at the rear part of a first vehicle; the vehicle-mounted early warning equipment comprises a main control circuit board, a laser radar and an alarm module; the main control circuit board is electrically connected with the laser radar and the alarm module respectively;
the laser radar is used for transmitting a first laser signal to the direction of a second vehicle and recording a first moment for transmitting the first laser signal; receiving a second laser signal reflected by the second vehicle, and recording a second moment of receiving the second laser signal; transmitting the first moment and the second moment to the main control circuit board; wherein the second vehicle is located rearward of the first vehicle;
the main control circuit board is used for calculating the real-time distance between the second vehicle and the first vehicle based on the first moment, the second moment and the laser signal transmission speed; judging whether the real-time interval is smaller than a first preset value, if yes, sending a first alarm signal to the alarm module;
the alarm module is used for sending out first alarm information based on the first alarm signal.
2. The vehicle-mounted early warning device according to claim 1, wherein the main control circuit board is further configured to obtain real-time speed information of the first vehicle; determining the relative speed of the second vehicle relative to the first vehicle according to the real-time interval and the corresponding time information; determining a real-time speed of the second vehicle according to the relative speed and the real-time speed information of the first vehicle; judging whether the real-time speed of the second vehicle is greater than a second preset value, if so, sending a second alarm signal to the alarm module;
correspondingly, the alarm module is also used for sending out second alarm information based on the second alarm signal.
3. The vehicle-mounted early warning device according to claim 2, wherein the main control circuit board comprises a first interface; the first interface is used for being electrically connected with a speed measuring module in the first vehicle; the main control circuit board is also used for receiving the real-time speed information of the first vehicle sent by the speed measuring module through the first interface.
4. The vehicle-mounted early warning device according to claim 2, wherein the vehicle-mounted early warning device further comprises a positioning module; the positioning module is electrically connected with the main control circuit board;
the positioning module is used for sending real-time position information of the first vehicle to the main control circuit board;
the main control circuit board is used for determining real-time speed information of the first vehicle based on the real-time position information of the first vehicle and corresponding time information.
5. The vehicle-mounted early warning device according to claim 1, wherein the alarm module is an alarm display screen; correspondingly, the first alarm information is prompt text information displayed on the alarm display screen.
6. The vehicle-mounted pre-warning device of claim 2, further comprising a rear bump buffer; the rear anti-collision buffer device is electrically connected with the main control circuit board;
the main control circuit board is further used for sending a dangerous state signal to the rear anti-collision buffer device when the real-time distance is smaller than the first preset value and the real-time speed of the second vehicle is larger than the second preset value;
the rear bump buffer is used for responding to the dangerous state signal and executing corresponding operation so as to switch to a bump buffer state.
7. The vehicle-mounted pre-warning apparatus according to claim 6, wherein the rear crash cushion device includes: an inflator and an airbag; the air bag is connected with an inflation inlet of the inflation device, and the inflation device is electrically connected with the main control circuit board.
8. A vehicle comprising a vehicle body on which a vehicle-mounted warning device is mounted, the vehicle-mounted warning device being as claimed in any one of the preceding claims 1 to 7.
9. The vehicle according to claim 8, wherein an autopilot module is further mounted on the vehicle body, and the main control circuit board is electrically connected with the autopilot module;
the main control circuit board is also used for sending a rear collision avoidance control signal to the automatic driving module when the real-time distance is smaller than a first preset value and the real-time speed of the second vehicle is larger than a second preset value;
the automatic driving module is used for responding to the rear collision avoidance control signal and controlling the vehicle to accelerate forward or change the road.
10. The vehicle according to claim 8, wherein a prompt module is further installed in a cab of the vehicle body, and the prompt module is electrically connected with the main control circuit board;
the main control circuit board is also used for sending a prompt signal to the prompt module when the real-time distance is smaller than a first preset value and the real-time speed of the second vehicle is larger than a second preset value;
the prompt module is used for responding to the prompt signal and sending prompt information to a driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310737391.4A CN116953726A (en) | 2023-06-20 | 2023-06-20 | Vehicle-mounted early warning equipment and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310737391.4A CN116953726A (en) | 2023-06-20 | 2023-06-20 | Vehicle-mounted early warning equipment and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116953726A true CN116953726A (en) | 2023-10-27 |
Family
ID=88445292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310737391.4A Pending CN116953726A (en) | 2023-06-20 | 2023-06-20 | Vehicle-mounted early warning equipment and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116953726A (en) |
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2023
- 2023-06-20 CN CN202310737391.4A patent/CN116953726A/en active Pending
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