CN111105616A - Road surface information acquisition system - Google Patents
- ️Tue May 05 2020
CN111105616A - Road surface information acquisition system - Google Patents
Road surface information acquisition system Download PDFInfo
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- CN111105616A CN111105616A CN201911280028.4A CN201911280028A CN111105616A CN 111105616 A CN111105616 A CN 111105616A CN 201911280028 A CN201911280028 A CN 201911280028A CN 111105616 A CN111105616 A CN 111105616A Authority
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- 239000000725 suspension Substances 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 description 2
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
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Abstract
The invention provides a road surface information acquisition system, which comprises an information acquisition unit for acquiring vehicle condition information, a GPS positioning device for real-time positioning, a processing controller for analyzing the vehicle condition information and carrying out early warning, a cloud information processing system for carrying out integrated analysis, storage and update on the information transmitted by the processing controller, and a database for storing the road condition information, wherein the processing controller is used for analyzing the vehicle condition information and carrying out early warning; the principle is simple, the operation is convenient, the use threshold is low, a user can install and debug the system by himself without installing a sensor on a wheel or a suspension, the use cost of the system is reduced, and the popularization is easy; the road information is more specific and accurate, and the driving safety of the vehicle on the road is improved; the method can provide a large amount of road surface information data for the development of the intelligent automobile in the future, improves the driving safety of the intelligent automobile and accelerates the development of the intelligent automobile; the monitoring of the traffic department on the road surface conditions of remote areas such as villages, mountain areas and the like is enhanced.
Description
Technical Field
The invention relates to the technical field of traffic information, in particular to a road surface information acquisition system.
Background
The existing traffic network in China is developed, the road condition is generally good, but occasionally, some potholes, such as road surface sinking, exist. On roads at the level of villages and small towns, bumpy road sections are also generated due to overload driving, and the comfort and even safety of the journey are influenced by the roads. With the advent of automatic driving technology, various sensors have been used to read the environment around a vehicle, and these sensors have been very accurate in detecting pedestrians, vehicles, and buildings, but have not been very accurate in detecting potholes on road surfaces. With the increasing demand of people for riding comfort, active suspensions and electromagnetic suspensions are applied to automobiles more and more, and the demand of road surface information is also increased more and more.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a road surface information acquisition system, which solves the problem that the road surface information is difficult to read under the condition that a vehicle is not provided with a sensor, can simply realize the detection of the sudden change of the road surface, and enhances the monitoring of the traffic department on the road surface conditions of remote areas such as villages, mountain areas and the like.
The present invention achieves the above-described object by the following technical means.
A road surface information acquisition system comprises an information acquisition unit for acquiring vehicle condition information, a GPS positioning device for real-time positioning, a processing controller for analyzing the vehicle condition information and carrying out early warning, a cloud information processing system for carrying out integration analysis, storage and update on information transmitted by the processing controller, and a database for storing the road condition information;
the system comprises an information acquisition unit, a processing controller, a positioning GPS positioning device, a cloud information processing system and a database, wherein the information acquisition unit is communicated with an OBD interface of a vehicle-mounted automatic diagnosis system through a vehicle CAN bus to read the wheel speed, the engine speed and the throttle opening of four wheels, the information acquisition unit is connected with the processing controller through Bluetooth, the positioning GPS positioning device is connected into the processing controller, the processing controller is in communication connection with the cloud information processing system, and the database is respectively connected into the processing controller and the cloud information processing system;
the processing controller receives the vehicle condition information sent by the information acquisition unit and performs judgment and analysis;
the processing controller sends the judged road surface abnormal information, the position information acquired from the GPS positioning device and the vehicle condition information received from the information acquisition unit to the cloud information processing system, the cloud information processing system carries out calculation and analysis on the vehicle condition information again by the processing controller and compares the vehicle condition information with the road surface abnormal information sent by the processing controller, if the comparison is inconsistent, no operation is carried out, if the comparison is consistent, the information of the corresponding positioning points stored in the database is compared, if the comparison is inconsistent, the database is not updated, and if the comparison is inconsistent, the database is updated and stored.
Further, when the distance between the vehicle and the road of the abnormal information is less than 100 meters, the processing controller carries out early warning.
Further, when the vehicle runs to a road with abnormal information, the processing controller sends the position information acquired from the GPS positioning device and the vehicle condition information received from the information acquisition unit to the cloud information processing system, the cloud information processing system carries out calculation and analysis, when the abnormal information on the road surface is judged, the cloud information processing system deletes the abnormal information stored in the database, judges that the abnormal information exists on the road surface, compares the judged abnormal information with the abnormal information in the database, compares the abnormal information with the abnormal information in the database, does not process the abnormal information, compares the abnormal information with the abnormal information in the database, updates the database and stores the abnormal information.
Further, the vehicle condition information comprises a front left wheel speed V1, a front right wheel speed V2, a rear left wheel speed V3, a rear right wheel speed V4, an engine speed N and a throttle opening Q, and is analyzed and processed; first, the average speed V-1/4 (V1+ V2+ V3+ V4) is calculated, and the determination criterion for smoothing is | V1-V | ≦ 0.01 | V.
Further, when the curve of V1 is smooth, V2 is not smooth, and it can be seen that the road surface where the front right wheel is located has protrusions or depressions, for example, the curve of V2 is smooth, and V1 is not smooth, and it can be seen that the road surface where the front left wheel is located has protrusions or depressions.
Further, when V1 and V2 are not smooth at the same time, and V3 and V4 are smooth, it is known that the road surface has a speed bump obstacle.
Furthermore, when the wheel speeds of the four wheels are all in an unsmooth state, the road surface condition is known to be poor as a dirt road and a muddy road.
Furthermore, when the average speed V is less than or equal to 20km/h, the engine speed N and the throttle opening Q are both large, and the evaluation standard that the engine speed N and the throttle opening Q are both large is N & gt 2000r/min, and Q & gt 75%, the road section is known as an uphill road section at the moment.
Further, when the average speed V is in a rising state or a constant value and the throttle opening Q is zero or small, the evaluation criterion of the throttle opening Q is that Q is less than or equal to 5 percent, and the road section is known as a downhill road section.
The invention has the following beneficial effects:
the invention provides a road surface information acquisition system, which has simple principle, convenient operation and lower use threshold, and a user can install and debug the system by himself without installing a sensor on a wheel or a suspension, thereby reducing the use cost of the system and being easy to popularize; the updating speed of the road surface information is increased along with the increase of the user base number, and the updating speed of the road surface information is far higher than the existing level, so that the road information is more specific and accurate, and the driving safety of vehicles on the road is improved; the method can provide a large amount of road surface information data for the development of the intelligent automobile in the future, improves the driving safety of the intelligent automobile and accelerates the development of the intelligent automobile; the monitoring of the traffic department on the road surface conditions of remote areas such as villages, mountain areas and the like is enhanced.
Drawings
FIG. 1 is a flow chart of the operation of a road surface information collection system;
FIG. 2 is a flowchart showing the operation of the road surface information collecting system when the vehicle is driven again to the road with abnormal information
Detailed Description
The present invention will be further described with reference to the following specific examples, but the scope of the present invention is not limited thereto.
The utility model provides a road surface information acquisition system, is including the information acquisition unit that is used for gathering vehicle condition information, be used for real-time location GPS positioner, be used for the analysis vehicle condition information, and carry out the processing controller of early warning, be used for carrying out integration analysis, storage, update high in the clouds information processing system, be used for the database of storage road conditions information to the information that processing controller transmitted.
The information acquisition unit is linked together through car CAN bus and on-vehicle automatic diagnosis system's OBD interface, reads the fast, engine speed, the throttle opening degree of four-wheel, the information acquisition unit passes through bluetooth connection process controller, and location GPS positioner inserts process controller, process controller and high in the clouds information processing system communication connection, the database inserts process controller and high in the clouds information processing system respectively.
The processing controller receives the wheel speed V1 of the front left wheel, the wheel speed V2 of the front right wheel, the wheel speed V3 of the rear left wheel, the wheel speed V4 of the rear right wheel, the rotating speed N of the engine and the opening degree Q of a throttle valve sent by the information acquisition unit and carries out analysis processing; first, the average speed V-1/4 (V1+ V2+ V3+ V4) is calculated, and the determination criterion for smoothing is | V1-V | ≦ 0.01 | V.
When the curve of V1 is relatively smooth, V2 is not smooth, and it can be seen that the road surface where the front right wheel is located has protrusions or depressions, for example, the curve of V2 is relatively smooth, and V1 is not smooth, and it can be seen that the road surface where the front left wheel is located has protrusions or depressions, and when the wheels pass through the convex and concave road surface, the rolling distance is larger relative to the horizontal road surface, so that the speed change occurs.
When V1 and V2 are not smooth at the same time, and V3 and V4 are smooth, it is known that the road surface is a deceleration strip obstacle.
When the wheel speeds of the four wheels are all in an unsmooth state, the road surface condition is known to be poor as a dirt road and a muddy road.
When the average speed V is less than or equal to 20km/h, the engine speed N and the throttle opening Q are both large, and the evaluation standard of the large engine speed N and the large throttle opening Q is N & gt 2000r/min and Q & gt 75%, it can be known that the vehicle is an uphill road section at the moment, and because the vehicle on the uphill road section needs to overcome gravity to do work and consumes a large amount of engine output power, the condition that the engine is high in load and the vehicle speed is low can be generated.
When the average speed V is in a rising state or in a fixed value and the throttle opening Q is zero or very small, the evaluation standard of the throttle opening Q is that Q is less than or equal to 5 percent, namely the vehicle is a downhill road section at the moment, and the engine can not provide power because gravity does work on the vehicle when the vehicle is downhill.
The processing controller sends the judged road surface abnormal information, the position information acquired from the GPS positioning device and the vehicle condition information received from the information acquisition unit to the cloud information processing system, the cloud information processing system carries out calculation and analysis on the vehicle condition information again by the processing controller, compares the vehicle condition information with the road surface abnormal information sent from the processing controller, if the comparison is inconsistent, does not carry out any operation, if the comparison is consistent, compares the information of the corresponding positioning points stored in the database, if the comparison is inconsistent, updates and stores the database, when the distance of the road driving to the abnormal information is less than 100 meters next time, the processing controller carries out early warning, when the road driving to the abnormal information is carried out, the processing controller sends the position information acquired from the GPS positioning device and the vehicle condition information received from the information acquisition unit to the cloud information processing system, and the cloud information processing system performs calculation and analysis, deletes the abnormal information stored in the database when judging that the road surface has no abnormal information, judges that the road surface has the abnormal information, compares the judged abnormal information with the abnormal information in the database, compares the abnormal information with the abnormal information in the database, does not perform processing, does not compare the abnormal information with the abnormal information, updates the database and stores the abnormal information.
The invention has simple principle, convenient operation and lower use threshold, and a user can install and debug the system by himself without installing a sensor on a wheel or a suspension, thereby reducing the use cost of the system and being easy to popularize; the updating speed of the road surface information is increased along with the increase of the user base number, and the updating speed of the road surface information is far higher than the existing level, so that the road information is more specific and accurate, and the driving safety of vehicles on the road is improved; the method can provide a large amount of road surface information data for the development of the intelligent automobile in the future, improves the driving safety of the intelligent automobile and accelerates the development of the intelligent automobile; the monitoring of the traffic department on the road surface conditions of remote areas such as villages, mountain areas and the like is enhanced.
The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (9)
1.一种道路表面信息采集系统，其特征在于，包括用于采集车况信息的信息采集单元、用于实时定位GPS定位装置、用于分析车况信息、并进行预警的处理控制器、用于对处理控制器传来的信息进行整合分析、存储、更新云端信息处理系统、用于存储路况信息的数据库；1. a road surface information collection system, is characterized in that, comprises the information collection unit that is used for collecting vehicle condition information, is used for real-time positioning GPS positioning device, is used for analyzing vehicle condition information, and carries out the processing controller of early warning, is used for Process the information from the controller for integrated analysis, storage, and update the cloud information processing system, and a database for storing road condition information; 所述信息采集单元通过汽车CAN总线与车载自动诊断系统的OBD接口相连通，读取四轮的轮速、发动机转速、节气门开度，所述信息采集单元通过蓝牙连接处理控制器，定位GPS定位装置接入处理控制器，所述处理控制器与云端信息处理系统通信连接，所述数据库分别接入处理控制器和云端信息处理系统；The information collection unit is connected with the OBD interface of the vehicle-mounted automatic diagnosis system through the vehicle CAN bus, and reads the wheel speed, engine speed, and throttle opening of the four wheels. The information collection unit is connected to the processing controller through Bluetooth to locate the GPS. The positioning device is connected to a processing controller, the processing controller is connected in communication with the cloud information processing system, and the database is respectively connected to the processing controller and the cloud information processing system; 所述处理控制器接收到信息采集单元发送的车况信息，并进行判断分析；The processing controller receives the vehicle condition information sent by the information collection unit, and performs judgment and analysis; 所述处理控制器将判断到的道路表面异常信息、从GPS定位装置获取的位置信息和从信息采集单元接收的车况信息发送到云端信息处理系统，云端信息处理系统对处理控制器对车况信息进行再一次计算分析，并与处理控制器发送过来的道路表面异常信息进行比对，如果对比不一致，则不进行任何操作，则如果对比一致，再将数据库储存的相应定位点的信息进行比对，如果一致不进行更新数据库，如果不一致则更新数据库并进行存储。The processing controller sends the determined road surface abnormality information, the position information obtained from the GPS positioning device, and the vehicle condition information received from the information collection unit to the cloud information processing system, and the cloud information processing system performs the processing controller on the vehicle condition information. Calculate and analyze again, and compare it with the road surface abnormal information sent by the processing controller. If the comparison is inconsistent, do not perform any operation. If the comparison is consistent, then compare the information of the corresponding positioning points stored in the database. If it is consistent, do not update the database, if it is inconsistent, update the database and store it. 2.如权利要求1所述道路表面信息采集系统，其特征在于，当下次行驶到异常信息的道路距离小于100米时，处理控制器进行提前预警。2 . The road surface information collection system according to claim 1 , wherein, when the road distance to the abnormal information is less than 100 meters next time, the processing controller performs an early warning. 3 . 3.如权利要求2所述道路表面信息采集系统，其特征在于，当行驶到异常信息的道路时，处理控制器将从GPS定位装置获取的位置信息和从信息采集单元接收的车况信息发送到云端信息处理系统，云端信息处理系统进行计算分析，当判断到道路表面无异常信息，云端信息处理系统删除数据库中存储的异常信息，判断到道路表面有异常信息，将判断的异常信息与数据库中的异常信息对比，对比一致，不做处理，对比不一致，更新数据库并进行存储。3. The road surface information collection system as claimed in claim 2, wherein when driving to a road with abnormal information, the processing controller sends the position information obtained from the GPS positioning device and the vehicle condition information received from the information collection unit to the road. Cloud information processing system, the cloud information processing system performs calculation and analysis, when it is judged that there is no abnormal information on the road surface, the cloud information processing system deletes the abnormal information stored in the database, judges that there is abnormal information on the road surface, and combines the judged abnormal information with the database. The abnormal information is compared, the comparison is consistent, no processing is performed, the comparison is inconsistent, and the database is updated and stored. 4.如权利要求1所述道路表面信息采集系统，其特征在于，所述车况信息包括前左轮轮速V1、前右轮轮速V2、后左轮轮速V3、后右轮轮速V4、发动机转速N、节气门开度Q并进行分析处理；首先计算平均速度V＝1/4(V1+V2+V3+V4)，设定平滑的判断依据为∣V1-V∣≤0.01*V。4. The road surface information collection system as claimed in claim 1, wherein the vehicle condition information comprises the front left wheel speed V1, the front right wheel speed V2, the rear left wheel speed V3, the rear right wheel speed V4, the engine The speed N and the throttle valve opening Q are analyzed and processed; first, the average speed V=1/4 (V1+V2+V3+V4) is calculated, and the smooth judgment basis is set as ∣V1-V∣≤0.01*V. 5.如权利要求4所述道路表面信息采集系统，其特征在于，当V1曲线较为平滑时，V 2不平滑，可知前右侧车轮所在的道路表面有凸起或凹陷，如V2曲线较为平滑，V1不平滑，判定为前左侧车轮所在的道路表面有凸起或凹陷。5. The road surface information collection system according to claim 4, characterized in that, when V1 curve is relatively smooth, V2 is not smooth, it can be seen that the road surface where the front right wheel is located has protrusions or depressions, such as V2 curve is relatively smooth , V1 is not smooth, and it is determined that the road surface where the front left wheel is located is convex or concave. 6.如权利要求4所述道路表面信息采集系统，其特征在于，当V1和V2同时不平滑，而V3和V4平滑时，判定为路表面有减速带障碍。6 . The road surface information collection system according to claim 4 , wherein when V1 and V2 are not smooth at the same time, but V3 and V4 are smooth, it is determined that the road surface has a speed bump obstacle. 7 . 7.如权利要求4所述道路表面信息采集系统，其特征在于，当四个车轮的轮速均处于不平滑状态，判定为路表面情况整体较差，为土路、泥泞道路。7 . The road surface information collection system according to claim 4 , wherein when the wheel speeds of the four wheels are all in an uneven state, it is determined that the road surface condition is generally poor and is a dirt road or a muddy road. 8 . 8.如权利要求4所述道路表面信息采集系统，其特征在于，当平均速度V≤20km/h而发动机转速N和节气门开度Q均较大，发动机转速N和节气门开度Q均较大的评定标准为N＞2000r/min,Q＞75％，判定为上陡坡路段。8. The road surface information collection system according to claim 4, characterized in that, when the average speed V≤20km/h and the engine speed N and the throttle valve opening Q are both large, the engine speed N and the throttle valve opening Q are both large. The larger evaluation standard is N>2000r/min, Q>75%, and it is judged as a steep slope section. 9.如权利要求4所述道路表面信息采集系统，其特征在于，当平均速度V处于升高状态或者处于一个定值而节气门开度Q为零或者很小，节气门开度Q评定标准为Q≤5％，判定为下坡路段。9. The road surface information collection system according to claim 4, characterized in that, when the average speed V is in a rising state or is in a constant value and the throttle valve opening Q is zero or very small, the throttle valve opening Q evaluation standard If Q≤5%, it is determined as a downhill section.
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