CN113044007A - Automatic braking system based on swift current car detects - Google Patents
Automatic braking system based on swift current car detects Download PDFInfo
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- CN113044007A CN113044007A CN202011336650.5A CN202011336650A CN113044007A CN 113044007 A CN113044007 A CN 113044007A CN 202011336650 A CN202011336650 A CN 202011336650A CN 113044007 A CN113044007 A CN 113044007A
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- automatic braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/122—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger for locking of reverse movement
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- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention relates to an automatic braking system based on vehicle sliding detection, which comprises: the automatic brake mechanism is connected with the embedded processor and is used for executing brake operation with different strengths when receiving the slow speed vehicle sliding alarm signal or the overspeed vehicle sliding alarm signal; the intensity of the brake operation executed by the automatic brake mechanism when receiving the slow speed vehicle sliding alarm signal is lower than the intensity of the brake operation executed when receiving the overspeed vehicle sliding alarm signal; and the embedded processor is used for sending a slow speed vehicle sliding alarm signal when receiving the second control instruction and receiving the third control instruction. The automatic braking system based on the sliding detection is reliable in design, safe and stable. The method and the device can execute corresponding sending of alarm signals and brake control with different intensities when the driver seat is identified to have no human body object and the current vehicle speed belongs to low-speed sliding or over-speed sliding, so that the safety of vehicle control is improved.
Description
Technical Field
The invention relates to the field of vehicle sliding detection, in particular to an automatic braking system based on vehicle sliding detection.
Background
The free-wheeling is to put into neutral or to step on the clutch to slide, and in a simple way, when your vehicle is running fast, the user can step on the clutch or take off the gear, and only the inertia of the vehicle is used to drive the vehicle forward. When the automobile starts on a slope, the phenomenon that the automobile moves backwards due to improper oil separation and matching is also called slipping.
Neutral coasting is not fuel efficient and sometimes even more fuel intensive, in relation to the mode of operation of an electric injection engine. When the vehicle slides in a neutral state, the braking force of the vehicle is reduced, and rear-end accidents are easily caused. Because the vehicle is in a neutral sliding state, the connection between the engine and the driving wheel is lost, and the vehicle moves forwards by means of the inertia of the vehicle. Then, the full braking force can only be provided by the brakes once an emergency situation arises requiring braking. When the vehicle slides with the gear, the engine can provide certain traction, and the braking distance of the vehicle can be shortened by braking.
Vehicle slipping generally occurs when the vehicle stops at a position with a slope, for example, when the vehicle stops at a place on an uphill slope, the vehicle slips downwards under the condition that the hand brake is not pulled and the brake is not stepped. The principle behind is newton's law of mechanics, and when the vehicle was placed in the position that has a slope, the gravity of vehicle can be divided into two components, one along the slope position, perpendicular to the slope force can not produce the power of rolling over the car, but along the slope force can produce the effort to the vehicle, when the power of this component is greater than the frictional resistance of vehicle then can produce acceleration in along the slope direction, has had acceleration, the vehicle will slowly grow by speed 0, the quiescent condition, speed, so not only can produce the rolling over, but the speed of rolling over the car can be bigger and bigger if the slope is in.
Disclosure of Invention
The invention has at least the following two important points:
(1) identifying whether a human body object exists in a driver seat of the vehicle, and meanwhile, performing field judgment on whether the current vehicle speed is in a preset vehicle sliding range;
(2) when the driver seat is identified to have no human body object and the current vehicle speed belongs to the low-speed vehicle sliding or the overspeed vehicle sliding, the corresponding alarm signal is sent, so that personnel inside or outside the vehicle are informed in time, and serious vehicle collision accidents are avoided.
According to an aspect of the present invention, there is provided an automatic braking system based on a rolling detection, the system including:
the automatic brake mechanism is connected with the embedded processor and is used for executing brake operation with different strengths when receiving the slow speed vehicle sliding alarm signal or the overspeed vehicle sliding alarm signal;
the intensity of the brake operation executed by the automatic brake mechanism when receiving the slow speed vehicle sliding alarm signal is lower than the intensity of the brake operation executed when receiving the overspeed vehicle sliding alarm signal;
the orientation capture device is arranged opposite to a driver seat of the vehicle and used for carrying out orientation capture operation on the environment near the driver seat so as to obtain a corresponding seat surrounding image;
a tilt correction device connected to the orientation capture device for performing a tilt correction process on the received image of the seat surroundings to obtain and output a corresponding tilt-corrected image;
a content enhancement device, disposed opposite to a driver's seat of the vehicle, connected to the tilt correction device, for performing an image SVD enhancement process on the received tilt-corrected image to obtain and output a corresponding content-enhanced image;
the sharpening processing mechanism is connected with the content enhancement equipment and is used for carrying out edge sharpening processing on the received content enhancement image so as to obtain a corresponding sharpened image;
the first identification device is arranged in a center console of the vehicle, is connected with the sharpening processing mechanism, and is used for identifying whether the received sharpened image has a human body object with the scene depth being lower than a preset scene depth threshold value in real time and sending a first control instruction when the human body object with the scene depth being lower than the preset scene depth threshold value is identified;
the first identification device is further used for sending a second control instruction when identifying that no human body object with the scene depth being less than the preset scene depth threshold value exists;
a second discrimination device connected to an axle of a certain wheel of the vehicle for issuing a third control instruction when a rotation speed of the axle is within a rolling speed range;
the second discrimination device is also used for sending a fourth control instruction when the rotating speed of the axle is out of the rolling speed range;
the embedded processor is respectively connected with the first identification device and the second identification device and is used for sending a slow speed vehicle sliding alarm signal when receiving the second control instruction and the third control instruction;
and the embedded processor is also used for sending an overspeed vehicle sliding alarm signal when receiving the second control instruction and the fourth control instruction.
The automatic braking system based on the sliding detection is reliable in design, safe and stable. The method and the device can execute corresponding sending of alarm signals and brake control with different intensities when the driver seat is identified to have no human body object and the current vehicle speed belongs to low-speed sliding or over-speed sliding, so that the safety of vehicle control is improved.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a schematic external view illustrating a brake disc of an automatic brake mechanism of an automatic brake system based on a rolling detection according to an embodiment of the present invention.
Detailed Description
Embodiments of an automatic braking system based on a rolling detection according to the present invention will be described in detail with reference to the accompanying drawings.
The vehicle control is generally composed of 3 parts in hardware structure: a sensor, an electronic control unit and an actuator. When the automobile runs, each sensor continuously detects the working condition information of the running of the automobile and transmits the information to the ECU through the input interface in real time. When the ECU receives the information, corresponding decision and processing are carried out according to a control program which is pre-programmed in the ECU, a control signal is output to a corresponding actuator through an output interface of the ECU, and the actuator executes a corresponding action after receiving the control signal, so that a certain preset function is realized.
The electronic control unit is generally composed of an input interface circuit, a microprocessor, and an output interface circuit. The input interface circuit is mainly used for completing information transmission between the external sensor and the microprocessor. The microprocessor used in the automobile is mainly an 8-bit singlechip or a 16-bit singlechip, and now some cars begin to use 32-bit singlechips. The singlechip is a chip-level computer formed by integrating elements such as a CPU, an RAM/ROM, an I/O interface, a timing/counter and the like on one chip. The single chip microcomputer has a series of advantages of miniaturization, strong function, high reliability, low price, high cost performance ratio, low power consumption and the like, so that the single chip microcomputer is widely applied to real-time control of automobiles. An output interface circuit associates the ECU with the actuators. The electronic control unit converts decision instructions made by the ECU into control signals to drive the execution element to work, and has the functions of generating and amplifying the control signals and the like. Common output actuators are typically relays, solenoids, displays, or the like.
The automobile sensors are arranged at different positions of an automobile and mainly used for providing various working condition information of automobile operation, such as engine speed, throttle opening, cooling liquid temperature and the like, for an automobile control system. In order to accomplish different functions, the automobile is provided with sensors with different functions, and even if the sensors with the same functions have different structural forms on different automobiles. The electric signals provided by the sensors to the electronic control unit of the automobile are mainly of two types: analog signals and digital signals.
There are many sensors on a vehicle, each of which is typically assigned to a control system, such as an engine control system or a chassis control system. But some sensors may be shared by two or more systems.
In the prior art, due to the error of a vehicle driver or the out-of-control of a vehicle, a scene that a driver seat in the vehicle is not people or the vehicle is not people but the vehicle slides easily occurs, which is a very dangerous scene, on one hand, the driver cannot perform a timely braking operation because the driver is not at a control position, and on the other hand, the vehicle slides away from a safe parking position, so that the vehicle and nearby vehicles and people are damaged.
In order to overcome the defects, the invention builds the automatic braking system based on the sliding detection, and can effectively solve the corresponding technical problem.
The automatic braking system based on rolling detection according to the embodiment of the invention comprises:
the structure of a key component of the automatic brake mechanism, namely a brake disc, is shown in figure 1, and the automatic brake mechanism is connected with an embedded processor and is used for executing brake operation with different intensities when receiving a slow speed vehicle sliding alarm signal or an overspeed vehicle sliding alarm signal;
the intensity of the brake operation executed by the automatic brake mechanism when receiving the slow speed vehicle sliding alarm signal is lower than the intensity of the brake operation executed when receiving the overspeed vehicle sliding alarm signal;
the orientation capture device is arranged opposite to a driver seat of the vehicle and used for carrying out orientation capture operation on the environment near the driver seat so as to obtain a corresponding seat surrounding image;
a tilt correction device connected to the orientation capture device for performing a tilt correction process on the received image of the seat surroundings to obtain and output a corresponding tilt-corrected image;
a content enhancement device, disposed opposite to a driver's seat of the vehicle, connected to the tilt correction device, for performing an image SVD enhancement process on the received tilt-corrected image to obtain and output a corresponding content-enhanced image;
the sharpening processing mechanism is connected with the content enhancement equipment and is used for carrying out edge sharpening processing on the received content enhancement image so as to obtain a corresponding sharpened image;
the first identification device is arranged in a center console of the vehicle, is connected with the sharpening processing mechanism, and is used for identifying whether the received sharpened image has a human body object with the scene depth being lower than a preset scene depth threshold value in real time and sending a first control instruction when the human body object with the scene depth being lower than the preset scene depth threshold value is identified;
the first identification device is further used for sending a second control instruction when identifying that no human body object with the scene depth being less than the preset scene depth threshold value exists;
a second discrimination device connected to an axle of a certain wheel of the vehicle for issuing a third control instruction when a rotation speed of the axle is within a rolling speed range;
the second discrimination device is also used for sending a fourth control instruction when the rotating speed of the axle is out of the rolling speed range;
the embedded processor is respectively connected with the first identification device and the second identification device and is used for sending a slow speed vehicle sliding alarm signal when receiving the second control instruction and the third control instruction;
and the embedded processor is also used for sending an overspeed vehicle sliding alarm signal when receiving the second control instruction and the fourth control instruction.
Next, the description will be made further on the specific structure of the automatic braking system based on the rolling detection of the present invention.
In the automatic braking system based on the rolling detection:
the embedded processor is also used for sending a vehicle sliding safety signal when receiving the first control instruction;
wherein, in the second discrimination apparatus, the coaster speed range is set to a numerical range by a coaster upper limit speed and a coaster lower limit speed.
In the automatic braking system based on the rolling detection:
the upper limit speed of the carriage is greater than the lower limit speed of the carriage, and the upper limit speed and the lower limit speed of the carriage are less than or equal to 2 revolutions per second.
In the automatic braking system based on the rolling detection:
the real-time identification of whether the received sharpened image has a human body object with the depth of field being less than a preset depth of field threshold value comprises the following steps: and identifying each imaging area corresponding to each human body object in the received sharpening processing image in real time.
In the automatic braking system based on the rolling detection:
the real-time identification of whether the received sharpened image has a human body object with the depth of field being less than a preset depth of field threshold value comprises the following steps: and identifying the depth of field of the human body object corresponding to each imaging area, and comparing the shallowest depth of field with a preset depth of field threshold value to judge whether the received sharpened image has the human body object with the depth of field being higher than the preset depth of field threshold value.
In the automatic braking system based on vehicle slipping detection, the method further comprises:
the SD memory card is connected with the second identification device and used for storing the upper limit speed and the lower limit speed of the rolling;
the SD memory card is also connected with the first identification device and used for storing human body imaging characteristics for identifying human body objects.
In the automatic braking system based on vehicle slipping detection, the method further comprises:
a data storage card provided in the middle of the first discrimination apparatus and the second discrimination apparatus, for storing input signals and output signals of the first discrimination apparatus and the second discrimination apparatus;
the data memory card is one of an SD memory card, a FLASH memory card, an MMC memory card and a TF memory card.
In the automatic braking system based on the rolling detection:
the type selection of the data storage card comprises the following steps: the maximum capacity of the data memory card is based on the data amount of peak signals appearing in the input signals and the output signals of the first discrimination device and the second discrimination device.
In the automatic braking system based on vehicle slipping detection, the method further comprises:
the overflow detection mechanism is arranged in the middle of the first identification device and the second identification device, is connected with the data storage card and is used for detecting the existing data storage amount in the data storage card;
when the detected existing data storage capacity is larger than the maximum capacity of the data storage card, the overflow detection mechanism sends an overflow detection instruction;
and the overflow detection mechanism sends out a non-overflow detection instruction when the detected existing data storage volume is less than or equal to the maximum capacity of the data storage card.
In the automatic braking system based on vehicle slipping detection, the method further comprises:
and the instant display mechanism is positioned near the first identification device, connected with the overflow detection mechanism and used for executing the display operation of the information related to the model replacement request when the overflow detection instruction is received.
In addition, in the automatic braking system based on the rolling detection, the FLASH memory chip is a nonvolatile memory, and a memory cell block called a block can be erased and reprogrammed. The write operation of any FLASH device can only be performed in empty or erased cells, so in most cases, the erase must be performed before the write operation can be performed. While it is simple for a NAND device to perform an erase operation, NOR requires that all bits in the target block be written to 0 before an erase can be performed. Since erasing NOR devices is performed in blocks of 64-128 KB, the time for performing a write/erase operation is 5s, whereas erasing NAND devices is performed in blocks of 8-32 KB, which requires only 4ms at most to perform the same operation. The difference in block size when performing erasures further increases the performance gap between NOR and NADN, and statistics show that for a given set of write operations (especially when updating small files), more erase operations must be performed in NOR-based cells.
It is to be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, it is not intended to limit the invention to those embodiments. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (10)
1. The utility model provides an automatic braking system based on swift current car detects which characterized in that includes:
and the directional capture device is arranged opposite to a driver seat of the vehicle and is used for performing a directional capture operation on the environment near the driver seat so as to obtain a corresponding seat surrounding image.
2. The automatic braking system based on swift current vehicle detection as claimed in claim 1, said system further comprising:
and the inclination correction device is connected with the orientation capture device and is used for executing inclination correction processing on the received seat surrounding image so as to obtain and output a corresponding inclination correction image.
3. The automatic braking system based on swift current vehicle detection as claimed in claim 2, wherein said system further comprises:
the automatic brake mechanism is connected with the embedded processor and is used for executing brake operation with different strengths when receiving the slow speed vehicle sliding alarm signal or the overspeed vehicle sliding alarm signal;
the intensity of the brake operation executed by the automatic brake mechanism when receiving the slow speed vehicle sliding alarm signal is lower than the intensity of the brake operation executed when receiving the overspeed vehicle sliding alarm signal;
a content enhancement device, disposed opposite to a driver's seat of the vehicle, connected to the tilt correction device, for performing an image SVD enhancement process on the received tilt-corrected image to obtain and output a corresponding content-enhanced image;
the sharpening processing mechanism is connected with the content enhancement equipment and is used for carrying out edge sharpening processing on the received content enhancement image so as to obtain a corresponding sharpened image;
the first identification device is arranged in a center console of the vehicle, is connected with the sharpening processing mechanism, and is used for identifying whether the received sharpened image has a human body object with the scene depth being lower than a preset scene depth threshold value in real time and sending a first control instruction when the human body object with the scene depth being lower than the preset scene depth threshold value is identified;
the first identification device is further used for sending a second control instruction when identifying that no human body object with the scene depth being less than the preset scene depth threshold value exists;
a second discrimination device connected to an axle of a certain wheel of the vehicle for issuing a third control instruction when a rotation speed of the axle is within a rolling speed range;
the second discrimination device is also used for sending a fourth control instruction when the rotating speed of the axle is out of the rolling speed range;
the embedded processor is respectively connected with the first identification device and the second identification device and is used for sending a slow speed vehicle sliding alarm signal when receiving the second control instruction and the third control instruction;
the embedded processor is further used for sending an overspeed vehicle sliding alarm signal when receiving the second control instruction and the fourth control instruction;
the embedded processor is further used for sending a vehicle sliding safety signal when receiving the first control instruction;
wherein, in the second discrimination apparatus, the coaster speed range is set to a numerical range by a coaster upper limit speed and a coaster lower limit speed;
the upper limit speed of the rolling is larger than the lower limit speed of the rolling, and the upper limit speed and the lower limit speed of the rolling are both smaller than or equal to 2 revolutions per second.
4. The automatic braking system based on swift current car detection of claim 3, characterized in that:
the real-time identification of whether the received sharpened image has a human body object with the depth of field being less than a preset depth of field threshold value comprises the following steps: and identifying each imaging area corresponding to each human body object in the received sharpening processing image in real time.
5. The automatic braking system based on swift current car detection of claim 4, characterized in that:
the real-time identification of whether the received sharpened image has a human body object with the depth of field being less than a preset depth of field threshold value comprises the following steps: and identifying the depth of field of the human body object corresponding to each imaging area, and comparing the shallowest depth of field with a preset depth of field threshold value to judge whether the received sharpened image has the human body object with the depth of field being higher than the preset depth of field threshold value.
6. The automatic braking system based on swift current vehicle detection as claimed in claim 5, wherein said system further comprises:
the SD memory card is connected with the second identification device and used for storing the upper limit speed and the lower limit speed of the rolling;
the SD memory card is also connected with the first identification device and used for storing human body imaging characteristics for identifying human body objects.
7. The automatic braking system based on swift current vehicle detection as claimed in claim 6, said system further comprising:
a data storage card provided in the middle of the first discrimination apparatus and the second discrimination apparatus, for storing input signals and output signals of the first discrimination apparatus and the second discrimination apparatus;
the data memory card is one of an SD memory card, a FLASH memory card, an MMC memory card and a TF memory card.
8. The automatic braking system based on swift current car detection of claim 7, characterized in that:
the type selection of the data storage card comprises the following steps: the maximum capacity of the data memory card is based on the data amount of peak signals appearing in the input signals and the output signals of the first discrimination device and the second discrimination device.
9. The automatic braking system based on swift current vehicle detection as claimed in claim 8, said system further comprising:
the overflow detection mechanism is arranged in the middle of the first identification device and the second identification device, is connected with the data storage card and is used for detecting the existing data storage amount in the data storage card;
when the detected existing data storage capacity is larger than the maximum capacity of the data storage card, the overflow detection mechanism sends an overflow detection instruction;
and the overflow detection mechanism sends out a non-overflow detection instruction when the detected existing data storage volume is less than or equal to the maximum capacity of the data storage card.
10. The automatic braking system based on swift current vehicle detection as claimed in claim 9, said system further comprising:
and the instant display mechanism is positioned near the first identification device, connected with the overflow detection mechanism and used for executing the display operation of the information related to the model replacement request when the overflow detection instruction is received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011336650.5A CN113044007A (en) | 2020-11-25 | 2020-11-25 | Automatic braking system based on swift current car detects |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011336650.5A CN113044007A (en) | 2020-11-25 | 2020-11-25 | Automatic braking system based on swift current car detects |
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| CN113044007A true CN113044007A (en) | 2021-06-29 |
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| CN202011336650.5A Withdrawn CN113044007A (en) | 2020-11-25 | 2020-11-25 | Automatic braking system based on swift current car detects |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09249104A (en) * | 1996-03-18 | 1997-09-22 | Nissan Motor Co Ltd | Automatic brake for vehicle |
| CN102991483A (en) * | 2012-11-29 | 2013-03-27 | 浙江吉利汽车研究院有限公司杭州分公司 | System and method for intelligent braking of vehicle under driverless control |
| CN111204317A (en) * | 2018-11-22 | 2020-05-29 | 广州汽车集团股份有限公司 | EPB automatic release control method and device, controller and computer storage medium |
| CN111652027A (en) * | 2019-09-20 | 2020-09-11 | 任元华 | Silent vehicle instant recognition platform |
-
2020
- 2020-11-25 CN CN202011336650.5A patent/CN113044007A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09249104A (en) * | 1996-03-18 | 1997-09-22 | Nissan Motor Co Ltd | Automatic brake for vehicle |
| CN102991483A (en) * | 2012-11-29 | 2013-03-27 | 浙江吉利汽车研究院有限公司杭州分公司 | System and method for intelligent braking of vehicle under driverless control |
| CN111204317A (en) * | 2018-11-22 | 2020-05-29 | 广州汽车集团股份有限公司 | EPB automatic release control method and device, controller and computer storage medium |
| CN111652027A (en) * | 2019-09-20 | 2020-09-11 | 任元华 | Silent vehicle instant recognition platform |
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Application publication date: 20210629 |
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