WO2018046015A1

WO2018046015A1 - Alarm method, device and terminal for vehicle

Info

Publication number: WO2018046015A1
Application number: PCT/CN2017/101402
Authority: WO
Inventors: 孙承文; 房建民; 郑永进; 张绍磊
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-09-12
Filing date: 2017-09-12
Publication date: 2018-03-15
Also published as: CN107818694A

Abstract

An alarm device, terminal and method for a vehicle. The method is applied to an electronic device provided in a vehicle and comprises the following steps: obtaining a distance from a vehicle to an obstacle in front of the vehicle (202); determining whether the distance is less than a safe distance (204); and if yes, playing a first alarm sound (206).

Description

Vehicle alarm method, device and terminal

Technical field

The present disclosure relates to the field of communications, for example, to a vehicle alarm method, apparatus, and terminal.

Background technique

With the continuous research on driverless technology by companies such as Google and Baidu, assisted driving based on machine vision and sensors has received more and more attention. However, the use of computer systems to completely replace people for unmanned driving is also needed. For a long time. Related technologies for computer systems to assist a user in driving a vehicle are generally provided on high-end vehicles.

In the related art, when the computer system assists the user in driving the vehicle, the collected vehicle related data needs to be sent to the server, and the corresponding analysis operation is performed by the server, and then the analyzed data is transmitted back to the computer system, and the computer system is analyzed according to the The data displays road-related conditions to the vehicle user, and the method relies on an external network to allow the computer system to interact with the server, resulting in a higher cost of assisted driving.

Summary of the invention

The invention relates to a vehicle alarm method, device and terminal, which can solve the problem that the computer system assists driving in the related art, relies on an external network and a server, and improves the cost of assisted driving.

A vehicle alarm method for an electronic device disposed in a vehicle, comprising:

Obtaining a distance between the vehicle and an obstacle in front of the vehicle;

Determining whether the distance is less than a safety distance;

If the distance is less than the safe distance, the first alarm ring tone is played.

Optionally, the method further includes:

Determining whether the vehicle is decelerating if the distance is less than a safety distance;

If the vehicle is not decelerating, a second alarm ring tone is played.

Optionally, determining whether the distance is less than the safety distance includes:

Obtaining an imaging position of an obstacle in front of the vehicle in an image of the display screen;

Detecting whether the imaging position is within a dangerous distance range set in an image of the display screen;

If it is detected that the imaging position is within the dangerous distance range, it is determined that the distance is less than the safety distance.

Optionally, determining whether the vehicle is decelerating comprises:

Obtaining acceleration of the vehicle;

Detecting whether the change value of the acceleration is less than 0;

If it is detected that the change value of the acceleration is less than 0, it is determined that the vehicle is decelerating.

Optionally, the method further includes:

Sustaining facial expression data of the driver continuously within a predetermined time;

Comparing whether the acquired facial expression data is consistent with the pre-stored facial expression data;

In a case where the acquired facial expression data coincides with the pre-stored facial expression data, it is determined that the driver is fatigued to drive and plays a third alarm ring tone.

A vehicle alarm device includes:

a first acquisition module configured to acquire a distance between the vehicle and an obstacle in front of the vehicle;

a first determining module, configured to determine whether the distance is less than a safety distance;

The first playing module is configured to play the first alarm ring tone if the distance is less than the safe distance.

Optionally, the device further includes:

a second determining module, configured to determine whether the vehicle is decelerating if the distance is less than a safe distance;

The second play module is configured to play the second alarm ring tone if the vehicle is not decelerated.

Optionally, the first determining module is further configured to acquire an imaging position of an obstacle in front of the vehicle on a display screen; and detect whether the imaging position is within a dangerous distance range set in an image of the display screen, And if the imaging position is detected to be within the dangerous distance range, determining that the distance is less than the safety distance.

Optionally, the second determining module is further configured to acquire an acceleration of the vehicle; detect whether the change value of the acceleration is less than 0; and if the change value of the acceleration is detected to be less than 0, determine that the vehicle decelerates.

Optionally, the device further includes:

a second acquiring module, configured to continuously acquire facial expression data of the driver within a predetermined time;

a comparison module configured to compare whether the acquired facial expression data and the pre-stored facial expression data are consistent;

The third playing module is configured to determine that the driver is fatigued to drive and play the third alarm ring tone if the acquired facial expression data is consistent with the pre-stored facial expression data.

A terminal includes the apparatus of any of the above embodiments.

A storage medium is configured to store program code for setting a distance between a vehicle and an obstacle in front of the vehicle; determining whether the distance is less than a safety distance; and if the distance is less than the safety Distance, play the first alarm ring tone.

Optionally, the storage medium is further arranged to store program code arranged to perform the step of determining if the vehicle is decelerating if the distance is less than the safe distance; playing a second alarm ring tone if the vehicle is not decelerating.

Optionally, the storage medium is further configured to store program code configured to perform the step of: determining whether the distance is less than the safety distance comprises: acquiring an imaging position of an obstacle in front of the vehicle in an image of the display screen; detecting Whether the imaging position is within a dangerous distance range set in an image of the display screen; and if the imaging position is detected to be within the dangerous distance range, determining that the distance is less than the safety distance.

Optionally, the storage medium is further configured to store program code configured to perform the step of: determining whether the vehicle is decelerating comprises: acquiring an acceleration of the vehicle; detecting whether a change value of the acceleration is less than 0; and if detecting The change value of the acceleration is less than 0, and the vehicle is decelerated.

Optionally, the storage medium is further configured to store program code configured to perform the following steps: continuously acquiring facial expression data of the driver within a predetermined time; comparing the acquired facial expression data with the pre-stored facial expression data; and In a case where the acquired facial expression data coincides with the pre-stored facial expression data, it is determined that the driver is fatigued to drive and plays a third alarm ring tone.

DRAWINGS

FIG. 1 is a structural block diagram of a mobile terminal according to an embodiment; FIG.

2 is a flow chart of a vehicle alarm in accordance with an embodiment;

Figure 3 is a schematic illustration of a security thread in accordance with an embodiment;

4 is a block diagram showing the structure of a vehicle alarm device according to an embodiment;

Figure 5 is a block diagram 1 of an alternative structure of a vehicle alarm device according to an embodiment;

6 is a block diagram 2 of an alternative structure of a vehicle alarm device according to an embodiment;

7 is a schematic diagram of a mobile phone safe assisted driving according to an embodiment;

8 is a schematic diagram of a mobile phone assisted driving according to an embodiment;

9 is a block diagram of a safety assisted driving system in accordance with an embodiment.

detailed description

Example 1

The methods provided in the following embodiments can be performed in a mobile terminal or a computer terminal. For example, the mobile terminal is operated on the mobile terminal, and FIG. 1 is a structural block diagram of the mobile terminal provided in this embodiment. As shown in FIG. 1, the mobile terminal 10 may include one or more (only one shown) processor 102 (the processor 102 may include a Microcontroller Unit (MCU) or a programmable logic device (Field Programmable Gate). Array, FPGA), memory 104 storing data, and transmission device 106 having communication functions. The mobile terminal 10 may also include more or less components than those shown in FIG. 1, or have a different configuration than the device of FIG. .

The memory 104 may be configured as a software program and a module for storing application software, such as program instructions or modules corresponding to the vehicle alarm method in the following embodiments, and the processor 102 executes a plurality of types by executing a software program and a module stored in the memory 104. Functional application and data processing, that is, the following methods are implemented. Memory 104 may include high speed random access memory, and may also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, memory 104 can include memory remotely located relative to processor 102, which can be connected to mobile terminal 10 over a network. The above networks include the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Transmission device 106 is arranged to receive or transmit data over a network. The network described above may include a wireless network provided by a communication provider of the mobile terminal 10. In one example, the transmission device 106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (RF) module that is configured to communicate with the Internet wirelessly.

The present embodiment provides a vehicle alarm method, and FIG. 2 is a flowchart of a vehicle alarm method according to an embodiment, which is applied to an electronic device disposed in a vehicle. As shown in FIG. 2, the process includes the following steps.

In step 202, the distance between the vehicle and the obstacle in front of the vehicle is acquired.

In step 204, it is determined whether the distance is less than a safety distance.

In step 206, if the distance is less than the safety distance, the first alarm ring tone is played.

Through the above steps, since the distance between the vehicle and the obstacle in front of the vehicle is acquired, the distance data is analyzed and processed, and the data is not transmitted to the server through the external network, that is, the server is not required to participate in the data analysis, so that the assisted driving is performed. The process no longer relies on external networks and servers, and can solve the problem of assisting driving in related technologies, and the assisted driving process needs to rely on external networks and servers to increase the cost of assisted driving.

Optionally, the method further comprises: determining if the vehicle is decelerating if the distance is less than the safety distance; and playing the second alarm ring tone if the vehicle is not decelerating. Through the above steps, the user can be reminded to decelerate when there is a safety hazard.

Optionally, determining whether the distance is less than the safety distance comprises: acquiring an imaging position of an obstacle in front of the vehicle in an image of the display screen; detecting whether the imaging position is within a dangerous distance range set in an image of the display screen; If it is detected that the imaging position is within a dangerous distance range set in an image of the display screen, it is determined that the distance is less than a safety distance. Through the above steps, it is possible to quickly determine whether there is an obstacle within the safe distance.

As shown in Figure 3, the image in the display is divided into a safe distance range and a dangerous distance range. If the imaging position of the car or pedestrian or other obstacle in the image of the display screen is above the line 5, ie the safe distance range in Figure 3 (the portion between line 5 and the upper and left and right edges of the image), the user is represented The driving car travels within a safe distance and the obstacles are far from the car the user is driving.

If the imaging position of a car or pedestrian or other obstacle in the image of the display screen is below line 5, ie the dangerous distance range in Figure 3 (the portion between line 5 and the lower and left and right edges of the image) Inside, it means that the car the user is driving is closer than other obstacles. When the imaging position of the obstacle in the image of the display screen is between line 5 and line 4, indicating that the obstacle enters the dangerous distance range, the imaging position of the obstacle in the image of the display screen is lower, indicating that the obstacle is away from the user. The closer you drive a car, the more dangerous it is.

You can also use the following methods to set the security thread. At the first use, the user places a marker A at a distance from the vehicle driven by the user outside the vehicle, such as the distance between the marker A and the vehicle is 5 m. After the auxiliary computer system is fixed in the car, the user can manually adjust the position of the line 5 so that the marker A falls on the line 5, and the

lines

1, 2, 3, 4 are displayed on the screen image equidistantly along the length direction of the image. on.

The auxiliary computer system includes a three-axis gravity sensor and a camera, wherein the three-axis gravity sensor can record angle information a1, a2 and a3 of the camera, wherein the three-axis gravity sensor is in a three-dimensional coordinate system, and a1 is a mobile phone and a coordinate system. The angle between the positive directions of the X-axis, a2 is the angle between the positive direction of the phone and the Y-axis of the coordinate system, and a3 is the angle between the positive direction of the Z-axis of the mobile phone and the coordinate system to complete the calibration work. The camera can automatically adjust the initial pose according to the recorded angle information X, Y, Z, and lines 1 to 5 are automatically displayed at corresponding positions on the screen. The user has completed the setting of the safety distance and the recording of the initial pose of the camera.

Optionally, determining whether the vehicle is decelerating comprises: acquiring an acceleration of the vehicle; detecting whether a change value of the acceleration is less than 0; and determining that the vehicle decelerates if a change value of the acceleration is detected to be less than 0.

For example, the acceleration of the vehicle may be acquired using an acceleration sensor included in the auxiliary computer system, and the acceleration obtained by the acceleration sensor is the acceleration of the vehicle when the auxiliary computer system is fixed to the vehicle. When the distance between the obstacle and the vehicle is within a safe distance, the driver decelerates by braking, and the acceleration sensor can detect the change of the acceleration of the vehicle, thereby determining whether the user has performed the deceleration. When the value of the acceleration changes less than 0, the vehicle is in a deceleration state. When the value of the acceleration changes to zero, the vehicle is in a constant speed or stopped state. When the value of the acceleration changes by more than 0, the vehicle is in an accelerated state.

Optionally, before acquiring the distance between the vehicle and the obstacle in front of the vehicle, the method further includes: continuously acquiring facial expression data of the driver within a predetermined time; comparing the acquired facial expression data with pre-stored facial expression data Whether it is consistent; and in the case where the acquired facial expression data and the pre-stored facial expression data are consistent, it is determined that the driver is fatigued to drive and plays a third alarm ring tone. It is also possible to judge whether the driver is tired or not at any time.

For example, you can fix the camera on the vehicle, the front camera of the camera, on the camera side. To the driver's seat. When the vehicle is running, the front camera is activated, the driver's face (including the eyes) is photographed, and the photograph taken is sent to the image recognition module. The captured picture and the image of the driver's closed eyes stored by the image recognition module can be compared. If the captured picture has high correlation with the stored picture, the driver can close the eyes, and if the data acquired by the predetermined time content indicates the driver Closing your eyes shows that the driver is driving fatigue.

For example, the front camera of the mobile terminal can be turned on to capture a current image, the image recognition module recognizes a human eye in the current image, and calculates a time when the human eye continuously watches the driving direction according to the recognition result of the image recognition module, and in the The reminder signal is generated when the human eye continuously watches the driving direction for more than the preset fatigue time, and the reminder interface generated according to the reminder signal may be displayed on the mobile terminal.

Through the description of the foregoing embodiments, the method in the foregoing embodiment may be implemented by means of software plus a general hardware platform, or the method in the foregoing embodiment may be implemented by hardware. The technical solution in the above embodiments can be embodied in the form of a software product stored in a storage medium (such as Read-Only Memory (ROM), Random Access Memory (Random Access Memory). a RAM, a disk, an optical disk, comprising one or more instructions configured to control a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method described in the above embodiments .

Example 2

The embodiment provides a vehicle alarm device and a terminal, and the device can be configured to implement the method in the above embodiment. As used hereinafter, the term "module" may implement software, hardware, or a combination of software and hardware for a predetermined function.

4 is a structural block diagram of a vehicle alarm device in the embodiment. As shown in FIG. 4, the device includes a first acquisition module 42, a first determination module 44, and a first playback module 46.

The first acquisition module 42 is configured to obtain a distance between the vehicle and an obstacle in front of the vehicle.

The first determining module 44 is connected to the first obtaining module 42, and the first determining module 44 is configured to determine whether the distance is less than a safe distance.

The first playing module 46 is connected to the first determining module 44, and the first playing module 46 is configured to play the first alarm ring tone if the distance is less than the safe distance.

FIG. 5 is a block diagram showing an optional structure of the vehicle alarm device of the present embodiment. As shown in FIG. 5, on the basis of FIG. 4, the device further includes: a second judging module 52 and a second playing module 54.

The second judging module 52 is configured to determine whether the vehicle is decelerating if the distance is less than the safety distance.

The second play module 54 is connected to the second judging module 52, and the second play module 54 is configured to play the second alarm ring tone if the vehicle is not decelerated.

Optionally, the first determining module 44 is further configured to acquire an imaging position of an obstacle in front of the vehicle in an image of the display screen; detecting whether the imaging position is within a dangerous distance range set in an image of the display screen; If it is detected that the imaging position is within the dangerous distance range, it is judged that the distance is smaller than the safety distance.

Optionally, the second determining module 52 is further configured to acquire an acceleration of the vehicle; detect whether the change value of the acceleration is less than 0; and if the detected change value of the acceleration is less than 0, determine that the vehicle decelerates.

6 is an optional structural block diagram of the vehicle alarm device of the embodiment. As shown in FIG. 6, on the basis of all the modules shown in FIG. 4 and FIG. 5, the device further includes: a second acquisition module 62, comparing Module 64 and third play module 66.

The second acquisition module 62 is configured to continuously acquire facial expression data of the driver for a preset time.

The comparison module 64 is connected to the second acquisition module 62 described above, and the comparison module 64 is arranged to compare whether the acquired facial expression data and the pre-stored facial expression data are consistent.

The third playing module 66 is connected to the comparison module 64, and the third playing module 66 is configured to determine that the driver is in a fatigue driving state and play a third alarm if the facial expression data is consistent with the pre-stored facial expression data. Ring tone.

The embodiment provides a terminal, which includes the vehicle alarm device of any of the above embodiments.

As mobile phones become more and more popular in people's daily lives, mobile phones can also be used in assisted driving. Since the mobile phone functions as a communication device for people, it retains the communication function, has the function of assisting driving, and does not require additional purchase of a third-party assisted driving device (such as a camera other than the mobile phone), so there is no additional cost. Auxiliary driving can also take advantage of the sensors configured in the phone without increasing costs. As a portable product, the mobile phone is easy to assemble and has a friendly interface. Therefore, a mobile phone can be used as a computer system in assisted driving.

Take the terminal as a mobile phone as an example to illustrate the process of assisted driving. FIG. 7 is a schematic diagram of the safe driving assistance operation of the mobile phone according to the embodiment. As shown in FIG. 7, the working process of the mobile phone assisted driving includes the following steps.

The front camera (including the second acquisition module 62 and the comparison module 64) is located at an upper portion of one side of the screen of the mobile phone. The front camera is activated to photograph the driver's face (including the eyes), and the photographs obtained by the photographing are sent to the image recognition module to recognize the driver's facial expression or closed eyes. If it is judged that the driver produces a fatigue expression or a closed eye state at this time, the alarm module can be notified to play an alarm ring tone to remind the user. In a state of fatigue.

The rear camera (including the first acquisition module 42 and the first determination module 44) is located on a side of the mobile phone facing away from the screen. The rear camera is activated to take an obstacle in front of the vehicle (such as a vehicle driving ahead or a pedestrian walking), and the photograph taken is sent to the image recognition module to identify the road condition. If it is determined that there is a vehicle, a pedestrian or other obstacle in front of the vehicle driven by the user and the distance between the obstacle and the vehicle driven by the user is within a safe distance, the signal obtained by the front camera and the acceleration sensor of the mobile phone is used to determine the driving of the vehicle driven by the user. Status, notify the alarm module, play the alarm ring tone, remind the user to drive safely.

The acceleration sensor (such as the second determining module 52) can be disposed in the mobile phone motherboard. The mobile phone is fixed on the car. During the driving process, the mobile phone can collect at least one of the acceleration and the speed of the vehicle to determine whether the car driven by the user is in an accelerated state or a decelerated state. By the driving state of the vehicle driven by the user, combined with the information acquired by the front camera and the rear camera, it is judged whether the driver has taken the corresponding operation. If there is a driving abnormality (for example, the distance between the vehicle driven by the user and the obstacle is less than the safety distance and the vehicle is in the acceleration state), the alarm module may be notified to play an alarm ring tone to remind the user to drive safely.

The speaker (such as the first playing module 46, the second playing module 54, and the third playing module 66) is disposed in the mobile phone. If there is a driving abnormality, you can notify the alarm module to play the alarm ring tone through the speaker to remind the user to drive safely.

The embodiment provides a vehicle alarm method, which utilizes various devices and sensors in a mobile phone to acquire various external information (such as driver information and vehicle information) to form an omnidirectional and multi-angle information processing and judgment system. Auxiliary driving. The safety distance refers to the distance between the car and the obstacle in front of the car when the car is driving. If the distance is greater than the safe distance, the probability of occurrence of a collision is less than a first predetermined threshold (eg, 30%). If the obstacle is within a safe distance, it means that the distance between the two is close, and the probability of collision is greater than the second preset threshold (for example, 80%). For example, if there is a car or a pedestrian in front of the safe distance of the car, it is judged whether the driver is driving fatigue. If the driver is not fatigued, but the driver's vehicle is not decelerating, the mobile phone plays an alarm ring tone 3 to remind the driver to pay attention. Safety; if the driver's vehicle decelerates, the alarm ring tone will not be played.

Taking the terminal as a mobile phone as an example, the embodiment provides an assisted driving system. FIG. 8 is a schematic diagram of a mobile phone assisted driving operation according to an embodiment. As shown in FIG. 8, the system includes a mobile phone 1 and a vehicle 2 (for example, a car). The phone is fixed in front of the driver in the car, and the phone initiates assisted driving while the car is driving. The mobile phone includes: a front camera 11, a rear camera 12, an acceleration sensor 13, and a speaker. The front camera and rear camera can operate simultaneously.

9 is a block diagram of an assisted driving system of an embodiment. As shown in FIG. 9, the system may include monitoring an obstacle module in front of the vehicle, monitoring a vehicle acceleration module, monitoring a driver fatigue driving module, and a safe driving alarm module. The above modules will be described separately below.

The monitoring vehicle front obstacle module is arranged to monitor obstacles in front of the vehicle and the distance between the obstacle and the vehicle. Use the rear camera of the mobile phone to capture the road ahead of the car. The screen displayed on the mobile phone screen is shown in Figure 3. The safety line 1-5 on the display indicates the safety distance. If the image of the car or pedestrian or other obstacles in the display is on the upper part of the line 5, it means that the car is driving within a safe distance and the obstacle is far from the car. If the imaging position of the car or pedestrian or other obstacle in the display is below 5, it means that the car is close to the obstacle. When the imaging position of the obstacle in the display screen is between line 5 and line 4, the obstacle enters the dangerous distance, and the imaging position of the obstacle in the display screen goes down, indicating the user and the driving car and the obstacle. The closer the distance, the higher the chance of a collision between the user's driving car and the obstacle.

The monitoring vehicle acceleration module can be an acceleration sensor configured in the mobile phone. The mobile phone is fixed on the car driven by the user, and the acceleration obtained by the acceleration sensor of the mobile phone is the acceleration of the car driven by the user. When there is an obstacle within the safe distance of the car, the driver steps on the brake, and the mobile phone acceleration sensor can detect the change of the acceleration, and can determine whether the car driven by the user is decelerating. When the value of the acceleration changes less than 0, it means that the car is in the deceleration state; when the change value of the acceleration is 0, it means that the car is in the constant speed or stop state; when the value of the acceleration changes more than 0, it means that the car is in the acceleration state.

The monitoring driver fatigue driving module may be a front camera located on the upper side of one side of the screen of the mobile phone. Turn on the front camera, take the driver's face (including the eyes), and send the captured photos to the image recognition module. It is possible to compare the captured picture with the picture of the driver's closed eyes stored inside the image recognition module. If the picture taken is highly correlated with the stored picture (indicating that the driver has closed his eyes), start timing, if the driver closes his eyes. More than 2s, indicating driver fatigue driving.

According to the information obtained by the panning, proactive and accelerometer sensors in the above three modules, there are 8 states in total. As shown in Table 1, the eight states represent the state of the external environment, the driver and the car. These 8 states determine whether the user is in a dangerous driving state. If the user is in a dangerous driving state, the safe driving alarm module (mobile phone speaker) starts to play an alarm ring tone to remind the driver. Full driving.

Table 1

状态status	安全距离DSafety distance D	疲劳驾驶TFatigue driving T	减速SDeceleration S		报警状态Alarm status
11	00	00	00	不报警No alarm
22	00	00	11	不报警No alarm
33	00	11	00	报警铃音1 Alarm ring tone 1
44	00	11	11	报警铃音2 Alarm ring tone 2
55	11	00	00	报警铃音3 Alarm ring tone 3
66	11	00	11	不报警No alarm
77	11	11	00	报警铃音4 Alarm ring tone 4
88	11	11	11	报警铃音5 Alarm ring tone 5

Wherein, the value D of the safety distance is 0, indicating that the imaging position of the obstacle in the display screen is above 5, or there is no obstacle in front; the value D of the safety distance is 1, indicating that the obstacle is between the vehicle and the vehicle driven by the user. The distance is less than the safe distance. The value T of the fatigue driving is 0, indicating that the driver's fatigue driving is not detected; the value T of the fatigue driving is 1, indicating that the driver is fatigued to drive. The deceleration value S is 0, indicating that the vehicle is not decelerating; the safety distance value S is 1, indicating that the vehicle is decelerating.

The above embodiment provides a system for assisting driving using a mobile phone, which utilizes devices and sensors on the mobile phone to obtain sufficient driving information to assist driving. Use the hardware in your phone to detect if the driver is in a hazardous environment and if the vehicle is slowing down in a hazardous environment.

The above multiple modules can be implemented by software or hardware. When the plurality of modules are implemented by hardware, the plurality of modules are all located in the same processor; or, the plurality of modules are respectively located in different processors.

Example 3

This embodiment provides a storage medium. Optionally, in the embodiment, the storage medium may be configured to store program code set to perform the following steps:

Obtaining the distance between the vehicle and the obstacle in front of the vehicle;

Determining whether the distance is less than a safety distance;

Optionally, the storage medium is further configured to store program code configured to perform the following steps: after determining whether the distance is less than a safe distance, the method further includes:

If the distance is less than the safety distance, determine whether the vehicle is decelerating;

In the case where the vehicle is not decelerating, the second alarm ring tone is played.

Optionally, the storage medium is further configured to store program code configured to perform the step of determining if the distance is less than a safe distance comprises:

Optionally, the storage medium is further configured to store program code configured to perform the steps of: determining whether the vehicle is slowing down comprises:

Obtaining the acceleration of the vehicle;

Detecting whether the change value of the acceleration is less than 0;

If it is detected that the change in acceleration is less than 0, the vehicle is decelerated.

Optionally, the storage medium is further arranged to store program code arranged to perform the following steps:

Sustaining facial expression data of the driver continuously for a predetermined time;

Comparing whether the acquired facial expression data and the pre-stored facial expression data are consistent;

Optionally, the foregoing storage medium may include, but is not limited to, a U disk, a ROM, a RAM, a mobile hard disk, a magnetic disk, or an optical disk, and the like, which can store program codes.

Optionally, the processor executes, according to the stored program code in the storage medium,: obtaining a distance between the vehicle and an obstacle in front of the vehicle; determining whether the distance is less than a safety distance; and playing the first alarm if the distance is less than a safety distance Ring tone.

Optionally, the processor executes according to the stored program code in the storage medium: if the distance is less than the safety distance, determining whether the vehicle is decelerating; and if the vehicle is not decelerating, playing the second alarm ring tone.

Optionally, the processor performs, according to the stored program code in the storage medium: determining whether the distance is less than the safety distance comprises: acquiring an imaging position of an obstacle in front of the vehicle in an image of the display screen; detecting whether the imaging position is in the The range of dangerous distances set in the image of the display screen; and if the detected imaging position is within the dangerous distance range, it is determined that the distance is less than the safety distance.

Optionally, the processor executes according to the stored program code in the storage medium: determining whether the vehicle is decelerating comprises: acquiring acceleration of the vehicle; detecting whether the change value of the acceleration is less than 0; and if detecting that the change value of the acceleration is less than 0, Determine the vehicle deceleration.

Optionally, the processor executes according to the stored program code in the storage medium: continuously acquiring facial expression data of the driver within a predetermined time; comparing whether the acquired facial expression data and the pre-stored facial expression data are consistent; In the case where the facial expression data coincides with the pre-stored facial expression data, it is determined that the driver is fatigued to drive and plays a third alarm ring tone.

For examples in this embodiment, reference may be made to the examples described in the above embodiments and alternative embodiments. The plurality of modules or steps described above may be implemented by a general purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices. Alternatively, the plurality of modules or steps described above may be implemented by program code executable by a computing device, which may be stored in a storage device for execution by a computing device, and in some cases, may be different from the present disclosure. The steps shown or described are performed sequentially. A plurality of modules may be separately fabricated into a plurality of integrated circuits, or a plurality of the modules may be fabricated as a single integrated circuit.

Industrial applicability

The vehicle alarm method, device and terminal can solve the problem that the assisting driving in the related art requires relying on an external network and a server to increase the cost of assisted driving.

Claims

A vehicle alarm method for an electronic device disposed in a vehicle, comprising:

Obtaining a distance between the vehicle and an obstacle in front of the vehicle;

Determining whether the distance is less than a safety distance;

If the distance is less than the safe distance, the first alarm ring tone is played.
The method of claim 1 further comprising:

Determining whether the vehicle is decelerating if the distance is less than a safety distance;

If the vehicle is not decelerating, a second alarm ring tone is played.
The method according to claim 1 or 2, wherein determining whether the distance is smaller than the safety distance comprises:

Obtaining an imaging position of an obstacle in front of the vehicle in an image of the display screen;

Detecting whether the imaging position is within a dangerous distance range set in an image of the display screen;

If it is detected that the imaging position is within the dangerous distance range, it is determined that the distance is less than the safety distance.
The method of claim 2 wherein determining whether the vehicle is decelerating comprises:

Obtaining acceleration of the vehicle;

Detecting whether the change value of the acceleration is less than 0;

If it is detected that the change value of the acceleration is less than 0, it is determined that the vehicle is decelerating.
The method of claim 1 further comprising:

Sustaining facial expression data of the driver continuously within a predetermined time;

Comparing whether the acquired facial expression data is consistent with the pre-stored facial expression data;

In the case where the acquired facial expression data is consistent with the pre-stored facial expression data, The driver is fatigued to drive and plays a third alarm ring tone.
A vehicle alarm device includes:

a first acquisition module configured to acquire a distance between the vehicle and an obstacle in front of the vehicle;

a first determining module, configured to determine whether the distance is less than a safety distance;

The first playing module is configured to play the first alarm ring tone if the distance is less than the safe distance.
The apparatus of claim 6 further comprising:

a second determining module, configured to determine whether the vehicle is decelerating if the distance is less than a safe distance;

The second play module is configured to play the second alarm ring tone if the vehicle is not decelerating.
The apparatus according to claim 6 or 7, wherein said first judging module is further configured to acquire an imaging position of an obstacle in front of said vehicle in an image of a display screen; and to detect whether said image forming position is in said display Within a dangerous distance range set in the image of the screen; and if the imaging position is detected to be within the dangerous distance range, determining that the distance is less than the safe distance.
The apparatus of claim 7, wherein the second determining module is further configured to acquire an acceleration of the vehicle; to detect whether a change value of the acceleration is less than 0; and if a change value of the acceleration is detected to be less than 0 And determining that the vehicle is decelerating.
The apparatus of claim 6 further comprising:

a second acquiring module, configured to continuously acquire facial expression data of the driver within a predetermined time;

a comparison module configured to compare whether the acquired facial expression data and the pre-stored facial expression data are consistent;

The third playing module is configured to determine that the driver is fatigued to drive and play the third alarm ring tone if the acquired facial expression data is consistent with the pre-stored facial expression data.
A terminal comprising the apparatus of any one of claims 6 to 10.
A computer readable storage medium storing computer executable instructions arranged to perform the method of any one of claims 1 to 5.