CN103000000B - Method and device for preventing fatigue driving and mobile terminal - Google Patents

Abstract

The invention is suitable for the field of mobile communication and particularly relates to a method and device for preventing fatigue driving and a mobile terminal. The method for preventing the fatigue driving includes: variation of current expression of a driver in unit time is calculated in real time; the variation of the current expression in the unit time is compared with variation of normal expression in the unit time; if deviation between the variation of the current expression in the unit time and the variation of the normal expression in the unit time exists, and a corresponding alarm is given according to degree of the deviation. The method can solve the problem of fatigue driving by using relative low cost, effectively protects personal and property safety of the driver, and is convenient and fast to operate. Due to popularization of smart phones, the method can be applied to the smart phones. The method for preventing the fatigue driving can be accepted by the automobile driver easily and is wide in application range.

Description

A method, device and mobile terminal for preventing fatigue driving

technical field

The invention belongs to the field of mobile communication, and in particular relates to a method, a device and a mobile terminal for preventing fatigue driving.

Background technique

Along with the quickening of modern life rhythm, the fatigue driving of motor vehicle driver is often difficult to avoid. However, even occasional drowsy driving is a very dangerous behavior. Therefore, R&D personnel in the automotive industry and other industries outside the automotive industry have gradually developed some tools to prevent fatigue driving through continuous research, in order to prevent motor vehicle drivers from driving fatigue and reduce danger.

Existing a kind of tool that prevents motor vehicle driver's fatigue from driving is the alarm that hangs on the ear, and its method of use is to require the driver to hang this alarm on the ear in the process of driving a motor vehicle. As long as the motor vehicle driver bows his head during driving, the alarm will send an alarm to remind the motor vehicle driver that he is already in a state of fatigue and should take a break to recover his strength.

The alarm device provided by the above-mentioned prior art has the following defects: firstly, not all motor vehicle drivers are willing to hang the alarm device on the ear subjectively, and the object itself is easy to cause fatigue when hanging the object for a long time on the ear; Drowsiness does not necessarily mean lowering the head, and lowering the head does not necessarily mean dozing off. Most of the methods of calling the police when the head is lowered are false alarms; finally, if the lowering of the head is really caused by dozing off, it is often too late to start calling the police at this time.

Contents of the invention

The purpose of the present invention is to provide a method, a device and a mobile terminal for preventing fatigue driving, aiming at solving the problem that the driver is really in a state of fatigue and the alarm is late.

The present invention is achieved like this, a kind of method for preventing fatigue driving, described method comprises:

Real-time calculation of the change of the driver's current demeanor within a unit time;

Comparing the change of the current demeanor within a unit time with the change of a normal demeanor within a unit time;

If there is a deviation between the change of the current demeanor and the change of the normal demeanor within a unit time, a corresponding alarm is issued according to the degree of deviation.

Another object of the present invention is to provide a device for preventing fatigue driving, said device comprising:

The real-time calculation module is used to calculate the change of the driver's current expression in a unit time in real time;

A comparison module, configured to compare the change of the current demeanor within a unit time with the change of a normal demeanor within a unit time;

The alarm module is used to issue a corresponding alarm according to the degree of deviation if the comparison result of the comparison module is that there is a deviation between the change of the current demeanor and the change of the normal demeanor within a unit time.

Another object of the present invention is to provide a mobile terminal, which includes the above device for preventing fatigue driving.

It can be seen from the above-mentioned embodiments of the present invention that since the change of the current demeanor calculated in real time can be compared with the change of the normal demeanor within the unit time, when the change of the current demeanor within the unit time is compared with the change of the normal demeanor within the unit time When there is a deviation in the time change, a corresponding alarm can be issued according to the degree of deviation. Therefore, compared with the prior art where the ear-mounted alarm prompts fatigue driving, the method provided by the embodiment of the present invention can solve the problem of fatigue driving in a relatively low-cost way, effectively protect the driver's personal and property safety, and the operation method is more convenient. Convenient; and, due to the popularity of smart phones, the above method can be used in smart phones, therefore, this method for preventing fatigue driving is easy to be accepted by motor vehicle drivers and has a wider range of applications.

Description of drawings

Fig. 1 is a schematic flow chart of a method for preventing fatigue driving provided by the first embodiment of the present invention;

Fig. 2-a is a schematic diagram of a motor vehicle driver in a normal driving state provided by an embodiment of the present invention;

Fig. 2-b is a schematic diagram of a motor vehicle driver's fatigue driving state during driving provided by an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of the device for preventing fatigue driving provided by the first embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a device for preventing fatigue driving provided by another embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a device for preventing fatigue driving provided by another embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a device for preventing fatigue driving provided by another embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a device for preventing fatigue driving provided by another embodiment of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Fig. 1 shows a schematic flowchart of a method for preventing fatigue driving provided by the first embodiment of the present invention, including step S101, step S102 and step S103, detailed as follows:

Step S101, calculating the change of the driver's current expression in a unit time in real time.

In the embodiment of the present invention, the change of the driver's current expression per unit time includes one or any combination of the driver's current eyelid closing frequency, eye focus range, head position deviation and facial expression. Since the above indicators are within a normal range when the person is energetic or not fatigued; if the person is fatigued, some changes will occur in the above indicators, for example, frequent eyelid closing, narrowing of eye focus and/or dizziness. Therefore, the above indicators can be used as a criterion for judging whether the motor vehicle driver is in fatigue driving. As shown in Figure 2-a, it is a schematic diagram of a motor vehicle driver in a normal driving state (full of energy or not tired). Front; Figure 2-b shows a schematic diagram of the driver's fatigue driving state during driving. From Figure 2-b, it can be seen that in the fatigue driving state, the driver's head is tilted, eyes are slightly closed or fully Closed, the line of sight also deviates from the front position.

As an embodiment of the present invention to calculate the change of the driver's current expression in unit time in real time, a mobile phone with a front camera can be placed at the position facing the driver, and the camera facing the driver can monitor the driving in real time during driving. The function module built in the mobile phone quantifies these current expressions and calculates the change of the quantified value in unit time.

Step S102, comparing the change of the current demeanor within a unit time with the change of a normal demeanor within a unit time.

There should be a definite value or a standard value for the change of the driver's normal attitude (that is, the energetic state or the non-tired state) per unit time. For example, in the normal state, the driver tilts his head during driving within 10 minutes Not more than 1 time, half-closed eyes not more than 2 times, etc. If the driver's current eyelid closing frequency, eye focus range, head position deviation and/or facial expression changes per unit time are compared with normal demeanor changes per unit time, it can be judged whether the driver is in a state of fatigue.

In the embodiment of the present invention, the change of the driver's normal demeanor per unit time may be a parameter calculated in advance through statistics on the demeanor of a group of motor vehicle drivers under normal driving conditions and stored in the system. Due to individual physiological differences, these pre-calculated parameters may not be suitable as a reference. Therefore, as an embodiment of the present invention, it is also possible to record in real time the expressions of the above-mentioned motor vehicle drivers during safe driving within a predetermined period of time, and convert all The change of the driver's demeanor during safe driving within the predetermined time period is regarded as the change of the normal demeanor within the unit time. Since it is recorded in real time and these parameters are collected from the same motor vehicle driver, the judgment can be more accurate.

Step S103, if there is a deviation between the change of the current facial expression per unit time and the normal facial expression within a unit time, a corresponding alarm is issued according to the degree of deviation.

In the embodiment of the present invention, several thresholds for comparison can be set for these deviations according to the actual situation, for example, the first threshold, the second threshold and the third threshold, wherein the first threshold is smaller than the second threshold, and the second threshold is smaller than third threshold.

As an embodiment of the present invention, if the deviation between the change of the motor vehicle driver's current expression per unit time and the change of the normal expression within a unit time reaches or exceeds the first threshold set above, the motor vehicle driving The driver sends out a voice prompt to remind the driver that he is already in a state of fatigue and should pay attention to rest. For example, when the deviation between the change of the driver's current expression and the change of the normal expression within 10 minutes exceeds 30%, a voice prompt is issued to the driver, reminding the driver to reduce the speed, pay attention to stop and rest and/or leave the vehicle. The distance to the front service area, etc.

As another embodiment of the present invention, if the deviation between the change of the motor vehicle driver's current expression per unit time and the change of the normal expression per unit time reaches or exceeds the second threshold value set above, the motor vehicle driving The operator sends out a stronger prompt than the aforementioned voice prompt. For example, when the change in the driver's current expression within 10 minutes and the change in the normal expression within 10 minutes deviate by more than 50%, a harsh alarm sound is sent to the driver to remind the driver that he is currently in a dangerous driving state, Be sure to stop and rest.

As another embodiment of the present invention, if the deviation between the change of the motor vehicle driver's current expression per unit time and the change of the normal expression within a unit time reaches or exceeds the third threshold set above, the motor vehicle driving The driver's relatives and friends send a message that the driver is severely fatigued. The mode of sending information can be short message or directly dial the phone of relatives and friends of the motor vehicle driver or the like. The relatives and friends of the motor vehicle driver can call back the mobile phone or phone number of the motor vehicle driver according to the text message or the phone call to persuade him to pay attention to driving safety.

Since the driver of a motor vehicle may take a short rest during the parking time, in this state, the driver's current expression, such as eyelid closing frequency, eye focus range, head position deviation and/or facial expression, etc. may be related to The normal demeanor is different. However, alerts and/or alarms in this state are false positives. In order to reduce the probability of such false alarms, in the embodiment of the present invention, a speed measuring device can be used to monitor the state of the motor vehicle driven by the motor vehicle driver in real time. If the monitoring result of the speed measuring device is the state of the motor vehicle, it indicates that the motor vehicle is driving. state, trigger the calculation of the change of the driver's current expression within a unit time; otherwise, the function module for calculating the change of the driver's current expression within a unit time can be turned off.

From the above method for preventing fatigue driving, it can be known that since the change of the current demeanor calculated in real time can be compared with the change of the normal demeanor within the unit time, when the change of the current demeanor within the unit time is compared with the change of the normal demeanor within the unit time When there is a deviation in the change per unit time, a corresponding alarm can be issued according to the degree of deviation. Therefore, compared with the prior art where the ear-mounted alarm prompts fatigue driving, the method provided by the embodiment of the present invention can solve the problem of fatigue driving in a relatively low-cost way, effectively protect the driver's personal and property safety, and the operation method is more convenient. Convenient; and, due to the popularity of smart phones, the above method can be used in smart phones, therefore, this method for preventing fatigue driving is easy to be accepted by motor vehicle drivers and has a wider range of applications.

Please refer to Figure 3, which is a schematic structural diagram of the device for preventing fatigue driving provided by the first embodiment of the present invention. The device for preventing fatigue driving illustrated in Figure 3 can be used in mobile terminals such as mobile phones. For ease of description, only parts related to the embodiments of the present invention are shown. The device for preventing fatigue driving illustrated in accompanying drawing 3 includes a real-time calculation module 301, a comparison module 302 and an alarm module 303, wherein:

The real-time calculation module 301 is used to calculate the change of the driver's current expression per unit time in real time. The change of the current expression within the unit time includes the driver's current eyelid closing frequency, eye focus range, head position deviation and One or any combination of facial expressions;

A comparison module 302, configured to compare the change of the current demeanor within a unit time with the change of a normal demeanor within a unit time;

The alarm module 303 is configured to issue a corresponding alarm according to the degree of the deviation if the comparison result of the comparison module 302 is that there is a deviation between the change of the current demeanor and the change of the normal demeanor within a unit time.

It should be noted that, in the above embodiments of the device for preventing fatigue driving, the division of each functional module is only an example. In practical applications, the above-mentioned Function allocation is accomplished by different functional modules, that is, the internal structure of the device for preventing fatigue driving is divided into different functional modules to complete all or part of the functions described above. Moreover, in practical applications, the corresponding functional modules in this embodiment may be implemented by corresponding hardware, or may be completed by corresponding hardware executing corresponding software. For example, the aforementioned real-time calculation module may be capable of performing the aforementioned real-time calculation The hardware that changes the driver's current expression in unit time, such as a real-time calculator, can also be a general processor or other hardware device that can execute the corresponding computer program to complete the aforementioned functions; The aforementioned hardware that compares the change of the current demeanor within a unit time with the change of the normal demeanor within a unit time, such as a comparator, may also be a general processor or other hardware capable of executing a corresponding computer program to complete the aforementioned functions Equipment (the above description principles can be applied to each embodiment provided in this specification).

The real-time computing module 301 illustrated in accompanying drawing 3 includes a monitoring unit 401 and a computing unit 402. As shown in accompanying drawing 4, another embodiment of the present invention provides a device for preventing fatigue driving, wherein:

The monitoring unit 401 is used to monitor the current state of the driver in real time. The monitoring unit 401 may be, for example, a front camera of a mobile terminal or the like.

The calculating unit 402 is configured to calculate the change of the quantized value within a unit time after quantifying the current expression.

The alarm module 303 illustrated in Figure 3 may also include a first prompt unit 501, a second prompt unit 502, and an instant message sending unit 503, as shown in Figure 5, the device for preventing fatigue driving provided by another embodiment of the present invention, in:

The first prompting unit 501 is configured to issue a voice prompt to the driver if the deviation between the change of the driver's current demeanor and the normal demeanor within a unit time reaches or exceeds a first threshold;

The second prompting unit 502 is used to issue a voice prompt to the driver if the deviation between the change in the driver's current expression and the normal expression in the unit time reaches or exceeds the second threshold. strongly suggest that the second threshold is greater than the first threshold;

The instant message sending unit 503 is used to send the driver's message to the relatives and friends of the driver if the deviation between the change of the driver's current expression and the change of the normal expression in the unit time reaches or exceeds the third threshold. In the information of severe fatigue, the third threshold is greater than the second threshold.

The device for preventing fatigue driving illustrated in FIG. 3 may further include an expression recording module 601. As shown in FIG. 6, another embodiment of the present invention provides a device for preventing fatigue driving. The demeanor recording module 601 is used to record in real time the demeanor of the driver during safe driving within a predetermined time, and take the change of the demeanor of the driver during safe driving within the predetermined time as the normal demeanor within a unit time. change in unit time.

The device for preventing fatigue driving illustrated in FIG. 3 may further include a state monitoring module 701. As shown in FIG. 7, another embodiment of the present invention provides a device for preventing fatigue driving. The state monitoring module 701 is used to monitor the state of the motor vehicle driven by the driver in real time, and if the state of the motor vehicle indicates that the motor vehicle is in a driving state, it will trigger the calculation of the change of the driver's current expression within a unit time.

An embodiment of the present invention also provides a mobile terminal, which includes the device for preventing fatigue driving in any one of the above-mentioned examples in Fig. 3 to Fig. 7 .

It should be noted that the information interaction and execution process between the modules/units of the above-mentioned device are based on the same idea as the method embodiment of the present invention, and the technical effect it brings is the same as that of the method embodiment of the present invention. The specific content can be Refer to the descriptions in the method embodiments of the present invention, and details are not repeated here.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium can include: Read Only Memory (ROM, Read Only Memory), Random Access Memory (RAM, Random Access Memory), disk or CD, etc.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (9)

1. prevent a method for fatigue driving, it is characterized in that, described method comprises:

The change of the real-time calculating current expression of driver within the unit interval;

The change of described current expression within the unit interval and the change of normal expression within the unit interval are contrasted;

If the change of described current expression within the unit interval and the change of normal expression within the unit interval exist deviation, then send corresponding warning according to the degree of deviation;

If the change of described current expression within the unit interval and the change of normal expression within the unit interval exist deviation, then send corresponding warning according to the degree of deviation and comprise:

If described deviation meets or exceeds first threshold, then send voice message to described driver; Describedly send voice message to described driver and comprise: prompting driver reduces the speed of a motor vehicle, note stopping and to have a rest and/or from front service area distance;

If described deviation meets or exceeds Second Threshold, then send the stronger prompting of more described voice message to described driver, described Second Threshold is greater than described first threshold;

If described deviation meets or exceeds the 3rd threshold value, then the kith and kin to described driver send the information that described driver is in major fatigue, and described 3rd threshold value is greater than described Second Threshold.

2. prevent the method for fatigue driving as claimed in claim 1, it is characterized in that, the change of described current expression within the unit interval comprises the closed frequency of the current eyelid of described driver, the focusing range of eyes, the position of head depart from and the one of facial expression or its combination in any;

The change of the described real-time calculating current expression of driver within the unit interval comprises: the current expression of the real-time monitoring driving person of the camera just right with driver; The change of quantized value within the unit interval is calculated after described current expression being quantized.

3. prevent the method for fatigue driving as claimed in claim 1, it is characterized in that, described method also comprises:

The expression of described driver when safe driving in the real time record schedule time, using the change of the expression of driver described in the described schedule time when safe driving within the unit interval as the change of described normal expression within the unit interval.

4. prevent the method for fatigue driving as claimed in claim 1, it is characterized in that, described method also comprises:

The state of real-time monitoring described driver institute operating motor vehicles, if the state of described motor vehicle shows that described motor vehicle is in transport condition, then triggers and calculates the change of the current expression of driver within the unit interval.

5. prevent a device for fatigue driving, it is characterized in that, described device comprises:

Real-time computing module, for calculating the change of the current expression of driver within the unit interval in real time;

Comparison module, for contrasting the change of described current expression within the unit interval and the change of normal expression within the unit interval;

Alarm module, if be that the change of current expression within the unit interval and the change of normal expression within the unit interval exist deviation for the comparing result of described comparison module, then sends corresponding warning according to the degree of deviation;

Described alarm module comprises:

First Tip element, if meet or exceed first threshold for described deviation, then sends voice message to described driver;

Second Tip element, if meet or exceed Second Threshold for described deviation, then send the stronger prompting of more described voice message to described driver, described Second Threshold is greater than described first threshold;

Instant messages transmitting element, if meet or exceed the 3rd threshold value for described deviation, then the kith and kin to described driver send the information that described driver is in major fatigue, and described 3rd threshold value is greater than described Second Threshold;

Described first Tip element specifically for:

If described deviation meets or exceeds first threshold, prompting driver reduce the speed of a motor vehicle, note stop have a rest and/or from front service area distance.

6. prevent the device of fatigue driving as claimed in claim 5, it is characterized in that, the change of described current expression within the unit interval comprises the closed frequency of the current eyelid of described driver, the focusing range of eyes, the position of head depart from and the one of facial expression or its combination in any; Described real-time computing module comprises:

Monitoring unit, for the current expression of real-time monitoring driving person;

Computing unit, calculates the change of quantized value within the unit interval after described current expression being quantized.

7. prevent the device of fatigue driving as claimed in claim 5, it is characterized in that, described device also comprises:

Expression logging modle, for the expression of driver described in the real time record schedule time when safe driving, using the change of the expression of driver described in the described schedule time when safe driving within the unit interval as the change of described normal expression within the unit interval.

8. prevent the device of fatigue driving as claimed in claim 5, it is characterized in that, described device also comprises:

Monitoring module, for monitoring the state of described driver institute operating motor vehicles in real time, if the state of described motor vehicle shows that described motor vehicle is in transport condition, then triggers and calculates the change of the current expression of driver within the unit interval.

9. a mobile terminal, is characterized in that, described mobile terminal comprises the device preventing fatigue driving described in claim 5 to 8 any one.