CN107229054A - Method for early warning, device and terminal device - Google Patents
Method for early warning, device and terminal device Download PDFInfo
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- CN107229054A CN107229054A CN201710479735.0A CN201710479735A CN107229054A CN 107229054 A CN107229054 A CN 107229054A CN 201710479735 A CN201710479735 A CN 201710479735A CN 107229054 A CN107229054 A CN 107229054A
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- vehicle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
- G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Traffic Control Systems (AREA)
Abstract
The present invention provides a kind of method for early warning, device and terminal device, and the method for early warning includes：In the first moment transmitted reference signal, examined object is determined according to reference signal；Vehicle and the Prediction distance of examined object are obtained in the reflected signal of the second reception reference signal, and according to reference signal and reflected signal；Measurement distance is determined according to the operating range of Prediction distance and vehicle, operating range is operating range of the vehicle at the first moment to the second moment；If measurement distance is less than or equal to predetermined threshold value, warning information is pointed out.Method for early warning, device and terminal device that the present invention is provided, improve the security of vehicle.
Description
Technical field
The present invention relates to terminal device technical field, more particularly to a kind of method for early warning, device and terminal device.
Background technology
With continuing to develop for the communication technology, people also improve constantly to the demand of terminal device.Using terminal device as hand
Exemplified by machine, people have not only been satisfied with the basic communication functions of mobile phone, and facility is provided the user with greater need for mobile phone.
In the prior art, mobile phone is positioned in vehicle, noncontact can be measured by the camera in mobile phone and sensor
Object spacing, with the spacing according to object to user carry out safe early warning, still, using distance measurement of the prior art
Mode so that the accuracy rate of measurement result is not high, so as to cause the security of vehicle not high.
The content of the invention
The present invention provides a kind of method for early warning, device and terminal device, improves the security of vehicle.
The embodiment of the present invention provides a kind of method for early warning, and applied to terminal device, the terminal device is positioned in vehicle,
The method for early warning includes：
In the first moment transmitted reference signal, examined object is determined according to the reference signal；
In the reflected signal of reference signal described in the second reception, and according to the reference signal and the reflected signal
Obtain the Prediction distance of the vehicle and the examined object；
Measurement distance is determined according to the operating range of the Prediction distance and the vehicle, the operating range is the car
First moment to second moment operating range；
If the measurement distance is less than or equal to predetermined threshold value, warning information is pointed out.
In an embodiment of the present invention, it is described according to the operating range of the Prediction distance and the vehicle determine measurement away from
From, including：
The measurement distance is determined according to the difference of the Prediction distance and the operating range of the vehicle.
In an embodiment of the present invention, it is described to be determined according to the difference of the Prediction distance and the operating range of the vehicle
The measurement distance, including：
The vehicle and the Prediction distance of examined object are obtained according to S=(S1-S2)/2；
Wherein, S1=V1*T, S2=V2*T, S represent the measurement distance, and S1 represents the Prediction distance, and S2 represents institute
State the operating range of vehicle；V1 represents the transmission speed of the reference signal, and T represents the very first time, the very first time
For the time difference between first moment and second moment；V2 represents the travel speed of the vehicle.
In an embodiment of the present invention, methods described also includes：
If the measurement distance is more than the predetermined threshold value, the measurement distance is reported.
In an embodiment of the present invention, the reference signal is infrared signal or ultrasonic signal.
The embodiment of the present invention also provides a kind of prior-warning device, applied to terminal device, and the terminal device is positioned over vehicle
Interior, the prior-warning device includes：
Determining unit, in the first moment transmitted reference signal, examined object to be determined according to the reference signal；
Acquiring unit, for the reflected signal in reference signal described in the second reception, and according to the reference signal
The vehicle and the Prediction distance of the examined object are obtained with the reflected signal；
The determining unit, is additionally operable to determine measurement distance according to the operating range of the Prediction distance and the vehicle,
The operating range is operating range of the vehicle at first moment to second moment；
Tip element, if being less than or equal to predetermined threshold value for the measurement distance, points out warning information.
In an embodiment of the present invention, the determining unit, specifically for according to the Prediction distance and the vehicle
The difference of operating range determines the measurement distance.
In an embodiment of the present invention, the determining unit, specifically for obtaining the vehicle according to S=(S1-S2)/2
With the Prediction distance of examined object；
Wherein, S1=V1*T, S2=V2*T, S represent the measurement distance, and S1 represents the Prediction distance, and S2 represents institute
State the operating range of vehicle；V1 represents the transmission speed of the reference signal, and T represents the very first time, the very first time
For the time difference between first moment and second moment；V2 represents the travel speed of the vehicle.
In an embodiment of the present invention, the Tip element, if being additionally operable to the measurement distance more than the predetermined threshold value,
Then report the measurement distance.
The embodiment of the present invention also provides a kind of terminal device, and the terminal device is positioned in vehicle, the terminal device
Including：
Prior-warning device described in any of the above-described embodiment.
Method for early warning provided in an embodiment of the present invention, device and terminal device, by the first moment transmitted reference signal,
Examined object is determined according to reference signal；In the reflected signal of the second reception reference signal, and according to reference signal and
Reflected signal obtains vehicle and the Prediction distance of examined object.According to the operating range of Prediction distance and vehicle determine measurement away from
From.If measurement distance is less than or equal to predetermined threshold value, warning information is pointed out.As can be seen here, early warning provided in an embodiment of the present invention
Method, device and terminal device, by examined object transmitted reference signal and receiving the reflected signal of the reference signal, with
The vehicle and the Prediction distance of examined object are determined, measurement distance is determined further according to the operating range of Prediction distance and vehicle,
And if when measurement distance is less than or equal to predetermined threshold value, warning information is pointed out, so as to improve the security of vehicle.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to do one simply to introduce, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of method for early warning provided in an embodiment of the present invention；
Fig. 2 is the schematic flow sheet of another method for early warning provided in an embodiment of the present invention；
Fig. 3 is a kind of structural representation of prior-warning device provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation of terminal device provided in an embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Term " first ", " second ", " the 3rd " in description and claims of this specification and above-mentioned accompanying drawing, "
The (if present)s such as four " are for distinguishing similar object, without for describing specific order or precedence.It should manage
The data that solution is so used can be exchanged in the appropriate case, so as to embodiments of the invention described herein, for example can be with
Order in addition to those for illustrating or describing herein is implemented.In addition, term " comprising " and " having " and their times
What is deformed, it is intended that covering is non-exclusive to be included, for example, contain the process of series of steps or unit, method, system,
Product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly or for
The intrinsic other steps of these processes, method, product or equipment or unit.
It should be noted that these specific embodiments can be combined with each other below, for same or analogous concept
Or process may be repeated no more in certain embodiments.
In the prior art, user is the spacing that non-contacting object is measured by the camera in mobile phone and sensor, with root
Safe early warning is carried out to user according to the spacing of object, but uses this method so that the accuracy rate of measurement result is not high, so as to cause
The security of vehicle is not high.In order to improve the security of vehicle, method for early warning provided in an embodiment of the present invention, by reference to signal
Obtain vehicle and the Prediction distance of examined object；Measurement distance is determined according to the operating range of Prediction distance and vehicle, and
When measurement distance is less than or equal to predetermined threshold value, warning information is pointed out, so as to improve the security of vehicle.
Fig. 1 is a kind of schematic flow sheet of method for early warning provided in an embodiment of the present invention, and certainly, the embodiment of the present invention is
Illustrated by taking Fig. 1 as an example, but do not represent that present invention is limited only by this.The method for early warning can be performed by prior-warning device, should
Prior-warning device can be independently arranged, and can also be arranged in terminal device, and the terminal device is positioned in vehicle.Specifically refer to
Shown in Fig. 1, the method for early warning can include：
S101, in the first moment transmitted reference signal, examined object is determined according to reference signal.
Example, in embodiments of the present invention, reference signal can be infrared signal, or ultrasonic signal,
It is of course also possible to be other reference signals, it can specifically be configured according to actual needs, here, the embodiment of the present invention is
Illustrated so that reference signal is infrared signal or ultrasonic signal as an example, but do not represent that present invention is limited only by this.
In the process of moving, if there is barrier in front, prior-warning device can be by (i.e. to be detected to the barrier for vehicle
Object) transmitted reference signal, to determine examined object according to the reference signal.
S102, the reflected signal in the second reception reference signal, and car is obtained according to reference signal and reflected signal
Prediction distance with examined object.
After the reflected signal of the second reception reference signal, it is possible to according to difference of first moment with the second moment
Value determines a time interval, is the very first time further according to the time interval, it is determined that after the very first time, it is possible to according to
The transmission speed of the very first time and reference signal obtains vehicle and the Prediction distance of examined object.
S103, measurement distance determined according to the operating range of Prediction distance and vehicle.
Wherein, operating range is operating range of the vehicle at the first moment to the second moment.
Example, in embodiments of the present invention, when obtaining the operating range of vehicle, it can be somebody's turn to do by recording for the first moment
The positional information of vehicle, second the moment vehicle positional information, so as to directly obtain vehicle according to two positional informations
Operating range, can also directly obtain the operating range of vehicle by range sensor；It is of course also possible to the traveling for passing through vehicle
Speed and the very first time obtain the operating range of vehicle；Here, the operating range for how to obtain vehicle, the present invention, which is not done, to be had
Body is limited, and can be specifically configured according to actual needs.
If S104, measurement distance are less than or equal to predetermined threshold value, warning information is pointed out.
Wherein, predetermined threshold value can be 3 meters, or 2 meters, it is of course also possible to be other numerical value, specifically can basis
It is actually needed and is configured, here, being specifically how many for predetermined threshold value, the present invention, which is not done, is further limited.
Example, in embodiments of the present invention, it can point out warning information, certainly, also may be used by way of voice broadcast
Warning information is pointed out in the way of word is reported, further, warning information can also include measurement distance information, to facilitate use
Family obtains the measurement distance information.Here, mode and content for pointing out warning information, can specifically enter according to actual needs
Row is set, and the present invention is not particularly limited.
In actual application, in vehicle travel process, by examined object transmitted reference signal and reception
The reflected signal of the reference signal, to determine the Prediction distance of the vehicle and examined object, further according to Prediction distance and vehicle
Operating range determine measurement distance, and if measurement distance be less than or equal to predetermined threshold value when, point out warning information, so as to improve
The security of vehicle.
Method for early warning provided in an embodiment of the present invention, it is true according to reference signal by the first moment transmitted reference signal
Determine examined object；Car is obtained in the reflected signal of the second reception reference signal, and according to reference signal and reflected signal
Prediction distance with examined object.Measurement distance is determined according to the operating range of Prediction distance and vehicle.If measurement distance
Less than or equal to predetermined threshold value, then warning information is pointed out.As can be seen here, method for early warning provided in an embodiment of the present invention, by treating
Detection object transmitted reference signal and the reflected signal for receiving the reference signal, to determine the prediction of the vehicle and examined object
Distance, measurement distance is determined further according to the operating range of Prediction distance and vehicle, and if being less than or equal to default threshold in measurement distance
During value, warning information is pointed out, so as to improve the security of vehicle.
Shown in Figure 2 on the basis of the corresponding embodiments of Fig. 1 based on the corresponding embodiments of Fig. 1, Fig. 2 is this hair
The schematic flow sheet for another method for early warning that bright embodiment is provided, certainly, the embodiment of the present invention are simply said by taking Fig. 2 as an example
It is bright, but do not represent that present invention is limited only by this.In the corresponding embodiments of Fig. 2, so that reference signal is infrared signal as an example
Illustrate, the method for early warning also includes：
S201, the first moment launch infrared signal, examined object is determined according to infrared signal.
In vehicle travel process, if there is barrier in front, prior-warning device can be by (i.e. to be detected to the barrier
Object) transmitting infrared signal, to determine examined object according to the infrared signal.
S202, the reflected signal in the second reception infrared signal, and obtained according to infrared signal and reflected signal
Prediction distance of the pick-up with examined object.
After the transmitting of first infrared signal, examined object can reflect the infrared ray information, so that prior-warning device is the
Two moment can receive the reflected signal of the infrared signal；Afterwards, it is possible to according to difference of first moment with the second moment
Value determines a time interval, is the very first time further according to the time interval, it is determined that after the very first time, it is possible to according to
The transmission speed of the very first time and infrared signal obtains vehicle and the Prediction distance of examined object.
S203, measurement distance determined according to the difference of Prediction distance and the operating range of vehicle.
Optionally, in embodiments of the present invention, according to the difference of Prediction distance and the operating range of vehicle determine measurement away from
From, including：
Vehicle and the Prediction distance of examined object are obtained according to S=(S1-S2)/2.
Wherein, S1=V1*T, S2=V2*T, S represent measurement distance, and S1 represents Prediction distance, and S2 represents the traveling of vehicle
Distance；V1 represents the transmission speed of reference signal, and T represents the very first time, and the very first time is between the first moment and the second moment
Time difference；V2 represents the travel speed of vehicle.
In actual application, when obtaining the measurement distance between vehicle and examined object, the state of vehicle can
With including two kinds：The first is inactive state；Second is motion state.When a vehicle is at rest, V2 is equal to 0, then
Vehicle and the Prediction distance of examined object directly can be obtained according to S=V1*T/2.When vehicle is kept in motion, V2 is not
Equal to 0, then vehicle and the Prediction distance of examined object can be obtained according to S=(V1*T-V2*T)/2.Example, Ke Yitong
The travel speed V2 that velocity sensor obtains vehicle is crossed, in embodiments of the present invention, it is believed that in T time section, at vehicle
Keep V2 constant in the travel speed of at the uniform velocity transport condition, i.e. vehicle.
Example, in embodiments of the present invention, can be according to the first moment and the second moment when obtaining the very first time
Difference obtains the very first time, can also start timing after transmitting infrared signal by timer, receiving infrared ray
After the reflected signal of signal, timer is closed, to obtain the very first time, it is of course also possible to obtain by other means,
This, for how to obtain the very first time, the present invention is not particularly limited.
Example, in embodiments of the present invention, when obtaining the operating range of vehicle, it can be somebody's turn to do by recording for the first moment
The positional information of vehicle, second the moment vehicle positional information, so as to directly obtain vehicle according to two positional informations
Operating range, can also directly obtain the operating range of vehicle by range sensor；It is of course also possible to the traveling for passing through vehicle
Speed and the very first time obtain the operating range of vehicle；Here, the operating range for how to obtain vehicle, the present invention, which is not done, to be had
Body is limited, and can be specifically configured according to actual needs.
If S204, measurement distance are less than or equal to predetermined threshold value, warning information is pointed out.
Example, in embodiments of the present invention, it can point out warning information, certainly, also may be used by way of voice broadcast
Warning information is pointed out in the way of word is reported, further, warning information can also include measurement distance information, to facilitate use
Family obtains the measurement distance information.Here, mode and content for pointing out warning information, can specifically enter according to actual needs
Row is set, and the present invention is not particularly limited.
As can be seen here, method for early warning provided in an embodiment of the present invention, by examined object launch infrared signal and
The reflected signal of the infrared signal is received, to determine the Prediction distance of the vehicle and examined object, further according to Prediction distance
Determine measurement distance with the operating range of vehicle, and if measurement distance be less than or equal to predetermined threshold value when, point out warning information, from
And improve the security of vehicle.Further, if measurement distance is more than predetermined threshold value, measurement distance is reported, so that user
The driving information of vehicle is understood in time, so as to improve the security of vehicle.
Optionally, in embodiments of the present invention, 207 can also include afterwards：
If S205, measurement distance are more than predetermined threshold value, measurement distance is reported.
Example, in embodiments of the present invention, measurement distance can be reported by way of voice broadcast, certainly, also may be used
Measurement distance is reported in the way of word is reported, here, the mode for reporting measurement distance, specifically can be according to actual needs
It is configured, the present invention is not particularly limited.
In actual application, in vehicle travel process, according to the transmission speed of infrared signal and the very first time
Obtain vehicle and the Prediction distance of examined object；According to the difference of Prediction distance and the operating range of vehicle determine measurement away from
From；If measurement distance is less than or equal to predetermined threshold value, warning information is pointed out.As can be seen here, early warning provided in an embodiment of the present invention
Method, by launching infrared signal to examined object and receiving the reflected signal of the infrared signal, to determine the vehicle
With the Prediction distance of examined object, measurement distance is determined further according to the operating range of Prediction distance and vehicle, and if in measurement
When distance is less than or equal to predetermined threshold value, warning information is pointed out, so as to improve the security of vehicle.Further, if measurement away from
From more than predetermined threshold value, then measurement distance is reported, so that user understands the driving information of vehicle in time, so as to improve vehicle
Security.
Fig. 3 is a kind of structural representation of prior-warning device 30 provided in an embodiment of the present invention, applied to terminal device, the end
End equipment is positioned in vehicle, certainly, and the embodiment of the present invention is simply illustrated by taking Fig. 3 as an example, but does not represent the present invention only
It is confined to this.Shown in Figure 3, prior-warning device 30 can include：
Determining unit 301, in the first moment transmitted reference signal, examined object to be determined according to reference signal.
Acquiring unit 302, for the reflected signal in the second reception reference signal, and according to reference signal and reflection
The Prediction distance of signal acquisition vehicle and examined object.
Determining unit 301, is additionally operable to determine measurement distance according to the operating range of Prediction distance and vehicle, operating range is
Operating range of the vehicle at the first moment to the second moment.
Tip element 303, if being less than or equal to predetermined threshold value for measurement distance, points out warning information.
Optionally, determining unit 301, specifically for being determined to measure according to the difference of Prediction distance and the operating range of vehicle
Distance.
Optionally, determining unit 301, the prediction specifically for obtaining vehicle and examined object according to S=(S1-S2)/2
Distance；
Wherein, S1=V1*T, S2=V2*T, S represent measurement distance, and S1 represents Prediction distance, and S2 represents the traveling of vehicle
Distance；V1 represents the transmission speed of reference signal, and T represents the very first time, and the very first time is between the first moment and the second moment
Time difference；V2 represents the travel speed of vehicle.
Optionally, Tip element 303, if being additionally operable to measurement distance more than predetermined threshold value, report measurement distance.
It should be noted that in embodiments of the present invention, reference signal can be infrared signal or ultrasonic signal.
Prior-warning device 30 shown in the embodiment of the present invention, can perform the technical side shown in above-mentioned method for early warning embodiment
Case, its realization principle and beneficial effect are similar, are no longer repeated herein.
Fig. 4 is a kind of structural representation of terminal device 40 provided in an embodiment of the present invention, and the terminal device 40 is positioned over
In vehicle, certainly, the embodiment of the present invention is simply illustrated by taking Fig. 4 as an example, but does not represent that present invention is limited only by this.Specifically
Shown in Figure 4, the terminal device 40 can include：
Prior-warning device 30 shown in any of the above-described embodiment.
Terminal device 40 shown in the embodiment of the present invention, can perform the technical side shown in above-mentioned method for early warning embodiment
Case, its realization principle and beneficial effect are similar, are no longer repeated herein.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, performs the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of method for early warning, it is characterised in that applied to terminal device, the terminal device is positioned in vehicle, described pre-
Alarm method includes：
In the first moment transmitted reference signal, examined object is determined according to the reference signal；
Obtained in the reflected signal of reference signal described in the second reception, and according to the reference signal and the reflected signal
The vehicle and the Prediction distance of the examined object；
Measurement distance is determined according to the operating range of the Prediction distance and the vehicle, the operating range is that the vehicle exists
Operating range of first moment to second moment；
If the measurement distance is less than or equal to predetermined threshold value, warning information is pointed out.
2. according to the method described in claim 1, it is characterised in that the traveling according to the Prediction distance and the vehicle
Distance determines measurement distance, including：
The measurement distance is determined according to the difference of the Prediction distance and the operating range of the vehicle.
3. method according to claim 2, it is characterised in that the traveling according to the Prediction distance and the vehicle
The difference of distance determines the measurement distance, including：
The vehicle and the Prediction distance of the examined object are obtained according to S=(S1-S2)/2；
Wherein, S1=V1*T, S2=V2*T, S represent the measurement distance, and S1 represents the Prediction distance, and S2 represents the car
Operating range；V1 represents the transmission speed of the reference signal, and T represents the very first time, and the very first time is institute
State the time difference between the first moment and second moment；V2 represents the travel speed of the vehicle.
4. according to the method described in claim 1, it is characterised in that methods described also includes：
If the measurement distance is more than the predetermined threshold value, the measurement distance is reported.
5. the method according to claim any one of 1-4, it is characterised in that
The reference signal is infrared signal or ultrasonic signal.
6. a kind of prior-warning device, it is characterised in that applied to terminal device, the terminal device is positioned in vehicle, described pre-
Alarm device includes：
Determining unit, in the first moment transmitted reference signal, examined object to be determined according to the reference signal；
Acquiring unit, for the reflected signal in reference signal described in the second reception, and according to the reference signal and institute
State reflected signal and obtain the vehicle and the Prediction distance of the examined object；
The determining unit, is additionally operable to determine measurement distance according to the operating range of the Prediction distance and the vehicle, described
Operating range is operating range of the vehicle at first moment to second moment；
Tip element, if being less than or equal to predetermined threshold value for the measurement distance, points out warning information.
7. device according to claim 6, it is characterised in that
The determining unit, specifically for determining the survey according to the difference of the Prediction distance and the operating range of the vehicle
Span from.
8. device according to claim 7, it is characterised in that
The determining unit, specifically for obtaining the vehicle and the pre- ranging of the examined object according to S=(S1-S2)/2
From；
Wherein, S1=V1*T, S2=V2*T, S represent the measurement distance, and S1 represents the Prediction distance, and S2 represents the car
Operating range；V1 represents the transmission speed of the reference signal, and T represents the very first time, and the very first time is institute
State the time difference between the first moment and second moment；V2 represents the travel speed of the vehicle.
9. device according to claim 6, it is characterised in that
The Tip element, if being additionally operable to the measurement distance more than the predetermined threshold value, reports the measurement distance.
10. a kind of terminal device, it is characterised in that the terminal device is positioned in vehicle, the terminal device includes：
Prior-warning device described in the claims any one of 6-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710479735.0A CN107229054A (en) | 2017-06-22 | 2017-06-22 | Method for early warning, device and terminal device |
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| CN201710479735.0A CN107229054A (en) | 2017-06-22 | 2017-06-22 | Method for early warning, device and terminal device |
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Application publication date: 20171003 |