A method and system for controlling the speed of an electric vehicle based on remote communication

Abstract

The present invention relates to the technical field of electric vehicle speed control, and discloses a control system for electric vehicle speed based on remote communication, including a road data collection module, an emergency data collection module, an electric vehicle speed control module, an electric vehicle speed upload module and an electric vehicle speed warning module, wherein the electric vehicle speed control module regulates the electric vehicle speed after receiving data from the road data collection module and the emergency data collection module respectively. The method obtains the real-time geographic location of the electric vehicle through a GPS positioning component carried by the electric vehicle, and uploads the data located by the GPS positioning component to a cloud map, compares and calculates the road congestion, road bumps, road speed limit and whether there are special areas around the road in the forward direction of the current positioning road of 500m and all branches of the current road of 250m, thereby limiting the upper limit of the electric vehicle speed, thereby ensuring the driving safety of the driver.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle speed control, and in particular to a method and system for controlling the speed of an electric vehicle based on remote communication. Background Art

[0002] Electric vehicles, as a light, fast and environmentally friendly means of transportation, have been deeply integrated into modern people's urban life and have become an indispensable part. With its unique advantages, it has changed people's travel methods and improved travel efficiency. At the same time, it has also made positive contributions to environmental protection. From the perspective of technological development, the electric vehicle industry has experienced a transformation from traditional battery drive to smart electric. This change is not only a technological upgrade, but also a profound impact on user experience and travel methods. Although traditional battery-driven electric vehicles can meet basic travel needs, they have certain limitations in terms of endurance and driving experience. With the advancement of science and technology, smart electric vehicles have emerged. It uses more advanced battery technology and intelligent control systems, which greatly improves the performance of electric vehicles. Smart electric vehicles not only have longer driving mileage, but also have more intelligent driving assistance systems. By integrating navigation, automatic driving, remote control and other functions, smart electric vehicles provide users with a more convenient and safe travel experience. At the same time, smart electric vehicles also have the characteristics of energy saving and emission reduction, which is in line with the pursuit of green environmental protection in modern society.

[0003] However, currently smart electric vehicles are not equipped with equipment to control the speed of the electric vehicle. There is only an alarm prompt when the speed of the electric vehicle exceeds the specified speed, so there is a safety hazard. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a method and system for controlling the speed of an electric vehicle based on remote communication, which has the advantages of accurately controlling the upper limit of the speed of the electric vehicle according to actual road conditions, and solves the above-mentioned technical problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a control system for electric vehicle speed based on remote communication, comprising a road data collection module, an emergency data collection module, an electric vehicle speed control module, an electric vehicle speed upload module and an electric vehicle speed warning module;

[0008] The road data collection module is used to collect road condition data around the road, and the road condition data around the road includes road congestion, road bumps, road speed limits, and whether there are special areas around the road. The special areas include schools, hospitals, and municipal units. The road data collection module collects the collected data to form a road data set DaL i And send it to the electric vehicle speed control module and the electric vehicle speed warning module;

[0009] The emergency data collection module is used to collect whether an emergency occurs on the current road, and to collect the emergency data set JJ i Send to the electric vehicle speed control module and the electric vehicle speed warning module;

[0010] The electric vehicle speed control module adjusts the speed of the electric vehicle after receiving the data from the road data collection module and the emergency data collection module respectively. The electric vehicle speed control module reads the current speed of the electric vehicle and sends the speed of the electric vehicle to the electric vehicle speed upload module;

[0011] The electric vehicle speed upload module sends the uploaded electric vehicle speed to the remote control terminal to monitor the electric vehicle speed, and sends the data to the electric vehicle speed warning module when the electric vehicle speed does not match the electric vehicle speed control module;

[0012] The electric vehicle speed warning module includes a conventional warning unit and an unconventional warning unit. The conventional warning unit is used to warn when the electric vehicle speed does not match the electric vehicle speed control module, and the unconventional warning unit is used to warn the driver when the emergency data collection module sends an emergency.

[0013] As a preferred technical solution of the present invention, the road data collection module obtains the real-time geographic location of the electric vehicle through the GPS positioning component on the electric vehicle, and uploads the positioning data of the GPS positioning component to the cloud map, compares and stores the road congestion, road bumps, road speed limit and whether there are special areas around the road in the forward direction of the current positioning road 500m and all branches of the current road 250m away in the road data set DaL i When an electric vehicle changes its road, it re-acquires the road congestion, road bumps, road speed limits, and whether there are special areas around the road 500m ahead of the new positioning road and all branches 250m away from the new road. At the same time, the road data collection module collects data every the same distance s. 0 Then do the same update.

[0014] As a preferred technical solution of the present invention, the road dataset DaL iThe specific expression is as follows:

[0015]

[0016] Among them, DaL i Represents the road dataset of the i-th road, YoD i represents the traffic congestion of the ith road, DB i represents the road bumps of the ith road, yod represents the corresponding congestion level, db represents the corresponding bumps level, ts represents the number of special areas, V i represents the speed limit of the i-th road, represents the maximum speed allowed on the ith road, TS i Represents the special area of ​​the i-th road.

[0017] As a preferred technical solution of the present invention, the expression of the congestion level yod is as follows:

[0018]

[0019] in, Reflects the relationship between the current number of people on the road and the theoretical number of people it can carry. RS i represents the actual vehicle on the ith road, RS max Indicates the corresponding current theoretical carrying vehicle.

[0020] As a preferred technical solution of the present invention, the expression of the bump level db is as follows:

[0021]

[0022] Among them, PZ i represents the road roughness of the ith road, PZ m1 ~PZ m3 Respectively represent three flatness indicators from low to high.

[0023] As a preferred technical solution of the present invention, the emergency situations include natural disasters, traffic accidents and road control situations, and constitute the emergency situation data set JJ i , the specific expression is as follows:

[0024]

[0025] Among them, ZR i represents the natural disaster situation of the ith road, zr represents the natural disaster deceleration weight, JT i represents the traffic accident situation of the i-th road, GK i represents the road control situation of the i-th road, jt represents the traffic accident deceleration weight, and gk represents the road control deceleration weight.

[0026] As a preferred technical solution of the present invention, the electric vehicle speed control module receives the road data set DaL i and emergency dataset JJ i The upper limit of the electric vehicle speed is calculated, and the specific expression is as follows:

[0027]

[0028] Among them, v max Indicates the upper limit of the speed of electric vehicles. represents the maximum speed allowed on the ith road, v 0 represents the control speed, yod represents the corresponding congestion level, db represents the corresponding bumpy level, ts represents the number of special areas, ε represents the balance factor, f(JJ i ) represents emergency related functions.

[0029] As a preferred technical solution of the present invention, the emergency-related function f(JJ i ) is expressed as follows:

[0030]

[0031] Among them, ∞ represents infinity.

[0032] As a preferred technical solution of the present invention, the conventional warning unit is max When the alarm is issued, the unconventional warning unit is in zr∈JJ i That is, when there is a natural disaster, an early warning is issued, and at this time v max =0.

[0033] The present invention also provides a method for controlling the speed of an electric vehicle based on remote communication, comprising the following steps:

[0034] S1. The road data collection module collects the road condition data around the road in real time to form the road data set DaL i The emergency data collection module collects whether an emergency occurs on the current road and collects the emergency data set JJ i ;

[0035] S2, the electric vehicle speed control module controls the upper speed limit of the electric vehicle in combination with the data in the road data collection module and the emergency data collection module;

[0036] S3, the electric vehicle speed warning module compares the electric vehicle speed uploaded by the electric vehicle speed upload module with the speed in the electric vehicle speed control module. When the actual speed is greater than the upper limit of the electric vehicle speed v maxand issuing early warnings when natural disasters occur.

[0037] Compared with the prior art, the present invention provides a method and system for controlling the speed of an electric vehicle based on remote communication, which has the following beneficial effects:

[0038] 1. The present invention obtains the real-time geographic location of the electric vehicle through the GPS positioning component on the electric vehicle, and uploads the positioning data of the GPS positioning component to the cloud map for comparison and the road congestion, road bumps, road speed limit and whether there are special areas around the road 500m forward of the current positioning road and 250m of all branches of the current road are compared to limit the upper speed limit of the electric vehicle, thereby ensuring the driving safety of the driver.

[0039] 2. When the electric vehicle changes its road, the present invention re-acquires the road congestion, road bumps, road speed limit and whether there are special areas around the road at 500m in the forward direction of the new positioning road and 250m in all branches of the new road. At the same time, the road data collection module collects data at the same distance s. 0 The same update is then performed to ensure that if the data is not updated in time after the turn, the road is judged based on the situation before the turn. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the system of the present invention;

[0041] Figure 2 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] See also Figure 1-2 , the present invention provides the following technical solutions: a control system for electric vehicle speed based on remote communication, comprising a road data collection module, an emergency data collection module, an electric vehicle speed control module, an electric vehicle speed upload module and an electric vehicle speed warning module;

[0044] The road data collection module is used to collect road condition data around the road. The road condition data around the road includes road congestion, road bumps, road speed limits, and whether there are special areas around the road. Special areas include schools, hospitals, and municipal units. The road data collection module collects the data to form a road data set DaL i And send it to the electric vehicle speed control module and the electric vehicle speed warning module;

[0045] The emergency data collection module is used to collect whether an emergency occurs on the current road, and collect the emergency data set JJ i Send to the electric vehicle speed control module and the electric vehicle speed warning module;

[0046] The electric vehicle speed control module adjusts the speed of the electric vehicle after receiving the data from the road data collection module and the emergency data collection module respectively. The electric vehicle speed control module reads the current speed of the electric vehicle and sends the speed of the electric vehicle to the electric vehicle speed upload module;

[0047] The electric vehicle speed upload module sends the uploaded electric vehicle speed to the remote control terminal to monitor the electric vehicle speed. When the electric vehicle speed does not match the electric vehicle speed control module, the data is sent to the electric vehicle speed warning module;

[0048] The electric vehicle speed warning module includes a conventional warning unit and an unconventional warning unit. The conventional warning unit is used to warn when the electric vehicle speed does not match the electric vehicle speed control module. The unconventional warning unit is used to warn the driver when the emergency data collection module sends an emergency.

[0049] The road data collection module obtains the real-time geographic location of the electric vehicle through the GPS positioning component on the electric vehicle, and uploads the positioning data of the GPS positioning component to the cloud map for comparison and stores the road congestion, road bumps, road speed limits and whether there are special areas around the road in the 500m forward direction of the current positioning road and 250m of all branches of the current road into the road data set DaL. i When an electric vehicle changes its road, it re-acquires the road congestion, road bumps, road speed limits, and whether there are special areas around the road 500m ahead of the new positioning road and all branches 250m away from the new road. At the same time, the road data collection module collects data every the same distance s. 0 The same update is then performed to ensure that if the data is not updated in time after the turn, the road is judged based on the situation before the turn.

[0050] Road Dataset DaL i The specific expression is as follows:

[0051]

[0052] In the formula, DaL i Represents the road dataset of the i-th road, YoD i represents the traffic congestion of the ith road, DB i represents the road bumps of the ith road, yod represents the corresponding congestion level, db represents the corresponding bumps level, ts represents the number of special areas, V i represents the speed limit of the i-th road, represents the maximum speed allowed on the ith road, TS i Represents the special area of ​​the i-th road.

[0053] The expressions of congestion level yod and turbulence level db are as follows:

[0054]

[0055] In the formula, PZ i represents the road roughness of the ith road, PZ m1 ~PZ m3 Represents three flatness indicators from low to high, Reflects the relationship between the current number of people on the road and the theoretical number of people it can carry. RS i represents the actual vehicle on the ith road, RS max Indicates the corresponding current theoretical load-bearing vehicle.

[0056] Emergency situations include natural disasters, traffic accidents, and road control situations, and constitute the emergency data set JJ i , the specific expression is as follows:

[0057]

[0058] In the formula, ZR i represents the natural disaster situation of the ith road, zr represents the natural disaster deceleration weight, JT i represents the traffic accident situation of the i-th road, GK i represents the road control situation of the i-th road, jt represents the traffic accident deceleration weight, and gk represents the road control deceleration weight.

[0059] The electric vehicle speed control module receives the road data set DaL i and emergency dataset JJ i The upper limit of the electric vehicle speed is calculated, and the specific expression is as follows:

[0060]

[0061] In the formula, v max Indicates the upper limit of the speed of electric vehicles. represents the maximum speed allowed on the ith road, v 0 represents the control speed, which is used to ensure the speed limit of electric vehicles, yod represents the corresponding congestion level, db represents the corresponding bumpy level, ts represents the number of special areas, ε represents the balance factor, and f(JJ i ) represents emergency-related functions. The emergency-related functions here are only called when an emergency occurs. If there is no emergency, f(JJ i )=1 means that it has no effect on the overall speed.

[0062] Emergency related function f(JJ i ) is expressed as follows:

[0063]

[0064] In the formula, ∞ represents infinity. When a natural disaster occurs, there will be a greater risk if you continue to drive along the current road. Therefore, a very large number is set to ensure that electric vehicles cannot drive along the current road. When a traffic accident occurs, obstacles on the ground will affect driving. When the road is controlled, the traffic police will manage the road at the intersection and travel in an orderly manner, so a slower speed is required.

[0065] Conventional warning unit when the actual vehicle speed is greater than v max When the alarm is issued, the unconventional warning unit is in zr∈JJ i That is, when there is a natural disaster, an early warning is issued, and at this time v max =0.

[0066] The present invention also provides a method for controlling the speed of an electric vehicle based on remote communication, comprising the following steps:

[0067] S1. The road data collection module collects the road condition data around the road in real time to form the road data set DaL i The emergency data collection module collects whether an emergency occurs on the current road and collects the emergency data set JJ i ;

[0068] S2, the electric vehicle speed control module controls the upper speed limit of the electric vehicle in combination with the data in the road data collection module and the emergency data collection module;

[0069] S3, the electric vehicle speed warning module compares the electric vehicle speed uploaded by the electric vehicle speed upload module with the speed in the electric vehicle speed control module. When the actual speed is greater than the upper limit of the electric vehicle speed vmax and issuing early warnings when natural disasters occur.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A control system for electric vehicle speed based on remote communication, characterized in that: It includes a road data collection module, an emergency data collection module, an electric vehicle speed control module, an electric vehicle speed upload module and an electric vehicle speed warning module; The road data collection module is used to collect road condition data around the road, and the road condition data around the road includes road congestion, road bumps, road speed limits, and whether there are special areas around the road. The special areas include schools, hospitals, and municipal units. The road data collection module collects the collected data to form a road data set DaL i And send it to the electric vehicle speed control module and the electric vehicle speed warning module; The emergency data collection module is used to collect whether an emergency occurs on the current road, and to collect the emergency data set JJ i Send to the electric vehicle speed control module and the electric vehicle speed warning module; The electric vehicle speed control module adjusts the speed of the electric vehicle after receiving the data from the road data collection module and the emergency data collection module respectively. The electric vehicle speed control module reads the current speed of the electric vehicle and sends the speed of the electric vehicle to the electric vehicle speed upload module; The electric vehicle speed upload module sends the uploaded electric vehicle speed to the remote control terminal to monitor the electric vehicle speed, and sends the data to the electric vehicle speed warning module when the electric vehicle speed does not match the electric vehicle speed control module; The electric vehicle speed warning module includes a conventional warning unit and an unconventional warning unit. The conventional warning unit is used for warning when the electric vehicle speed does not match the electric vehicle speed control module. The unconventional warning unit is used to warn the driver when the emergency data collection module sends an emergency message. The road dataset DaL i The specific expression is as follows: Among them, DaL i Represents the road dataset of the i-th road, YoD i represents the traffic congestion of the ith road, DB i represents the road bumps of the ith road, yod represents the corresponding congestion level, db represents the corresponding bumps level, ts represents the number of special areas, V i represents the speed limit of the i-th road, represents the maximum speed allowed on the ith road, TS i Represents the special area of ​​the i-th road.

2. The electric vehicle speed control system based on remote communication according to claim 1, characterized in that: The road data collection module obtains the real-time geographic location of the electric vehicle through the GPS positioning component on the electric vehicle, and uploads the positioning data of the GPS positioning component to the cloud map, compares and stores the road congestion, road bumps, road speed limits and whether there are special areas around the road in the 500m forward direction of the current positioning road and 250m of all branches of the current road into the road data set DaL i When an electric vehicle changes its road, it re-acquires the road congestion, road bumps, road speed limits, and whether there are special areas around the road 500m in the forward direction of the newly positioned road and 250m in all branches of the new road. At the same time, the road data collection module makes the same update every same distance s0.

3. The electric vehicle speed control system based on remote communication according to claim 2 is characterized in that: The expression of the congestion level yod is as follows: in, Reflects the relationship between the current number of people on the road and the theoretical number of people carrying. RS i represents the actual vehicle on the ith road, RS max Indicates the corresponding current theoretical load-bearing vehicle.

4. The electric vehicle speed control system based on remote communication according to claim 3 is characterized in that: The expression of the turbulence level db is as follows: Among them, PZ i represents the road roughness of the ith road, PZ m1 ~PZ m3 Respectively represent three flatness indicators from low to high.

5. The electric vehicle speed control system based on remote communication according to claim 1, characterized in that: The emergency situations include natural disasters, traffic accidents and road control situations, and constitute the emergency situation dataset JJ i , the specific expression is as follows: Among them, ZR i represents the natural disaster situation of the ith road, zr represents the natural disaster deceleration weight, JT i represents the traffic accident situation of the i-th road, GK i represents the road control situation of the i-th road, jt represents the traffic accident deceleration weight, and gk represents the road control deceleration weight.

6. The electric vehicle speed control system based on remote communication according to claim 1, characterized in that: The electric vehicle speed control module receives the road data set DaL i and emergency dataset JJ i The upper limit of the electric vehicle speed is calculated, and the specific expression is as follows: Among them, v max Indicates the upper limit of the speed of electric vehicles. represents the maximum speed allowed on the ith road, v0 represents the control speed, yod represents the corresponding congestion level, db represents the corresponding bump level, ts represents the number of special areas, ε represents the balance factor, and f(JJ i ) represents emergency related functions.

7. The electric vehicle speed control system based on remote communication according to claim 6, characterized in that: The emergency-related function f(JJ i ) is expressed as follows: Among them, ∞ represents infinity.

8. The electric vehicle speed control system based on remote communication according to claim 6, characterized in that: The conventional warning unit is configured to detect when the actual vehicle speed is greater than v max When the alarm is issued, the unconventional warning unit is in zr∈JJ i That is, when there is a natural disaster, an early warning is issued, and at this time v max =0.

9. A method for controlling the speed of an electric vehicle based on remote communication, based on the control system for the speed of an electric vehicle based on remote communication according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. The road data collection module collects the road condition data around the road in real time to form the road data set DaL i The emergency data collection module collects whether an emergency occurs on the current road and collects the emergency data set JJ i ; S2, the electric vehicle speed control module controls the upper speed limit of the electric vehicle in combination with the data in the road data collection module and the emergency data collection module; S3, the electric vehicle speed warning module compares the electric vehicle speed uploaded by the electric vehicle speed upload module with the speed in the electric vehicle speed control module. When the actual speed is greater than the upper limit of the electric vehicle speed v max and issuing early warnings when natural disasters occur.

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