CN106828389A - Moving car alarm method and device - Google Patents
Moving car alarm method and device Download PDFInfo
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- CN106828389A CN106828389A CN201710020524.0A CN201710020524A CN106828389A CN 106828389 A CN106828389 A CN 106828389A CN 201710020524 A CN201710020524 A CN 201710020524A CN 106828389 A CN106828389 A CN 106828389A
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- reaction time
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- front truck
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0134—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to imminent contact with an obstacle, e.g. using radar systems
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- Engineering & Computer Science (AREA)
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Traffic Control Systems (AREA)
Abstract
The present invention relates to the communications field, a kind of moving car alarm method and device are disclosed.In the present invention, moving car alarm method includes obtaining the distance between this car and front truck；The speed difference between this car and front truck is calculated according to variable quantity of the distance for obtaining in Preset Time；This vehicle speed is obtained, and according to vehicle speed before this vehicle speed and speed difference calculating；The default reaction time is obtained, and the safe distance between this car and front truck is calculated according to default reaction time, this vehicle speed and front truck speed；When distance between Ben Che and front truck is less than safe distance, information warning is triggered.The invention also discloses a kind of alarm device for vehicle.Compared with prior art, the invention enables can be between Ben Che and front truck distance be less than safe distance when, remind user vehicle operation safety, it is to avoid knock into the back, the generation of the traffic accident such as car to car impact.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of moving car alarm method and device.
Background technology
With the development of science and technology and growth in the living standard, motor vehicles are increasingly popularized, the pressure of road traffic
Power is also increasing.The thing followed, traffic problems also turn into a very severe problem.Most traffic accident is all
Caused due to the carelessness of driver；Energy is difficult to concentrate after especially driver drives for a long time, is easily caused the thing such as knock into the back
Therefore generation.
At present, some equipment for driver itself driving condition are occurred in that on the market.Such as, driver is detected tired
Lao Shi, sends alarm.Even if but so, the generation of the accident such as still cannot avoid knocking into the back.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of moving car alarm method and device so that can be in Ben Che and front truck
The distance between less than safe distance when, remind user vehicle operation safety, it is to avoid knock into the back, the hair of the traffic accident such as car to car impact
It is raw.
In order to solve the above technical problems, a kind of moving car alarm method is the embodiment of the invention provides, including：Obtain this car with
The distance between front truck；The speed difference between this car and front truck is calculated according to variable quantity of the distance for obtaining in Preset Time；
This vehicle speed is obtained, and according to vehicle speed before this vehicle speed and speed difference calculating；The default reaction time is obtained, and according to default anti-
Between seasonable, this vehicle speed and front truck speed calculate safe distance between this car and front truck；Between Ben Che and front truck away from
During from less than safe distance, information warning is triggered.
The embodiment of the present invention additionally provides a kind of alarm device for vehicle, including：First acquisition module, for obtain this car with
The distance between front truck；First computing module, for calculated according to variable quantity of the distance in Preset Time for obtaining this car with
Speed difference between front truck；Second acquisition module, is additionally operable to obtain this vehicle speed；Second computing module, is additionally operable to according to this car
Speed and speed difference calculate preceding vehicle speed；3rd acquisition module, is additionally operable to obtain the default reaction time；3rd computing module, also
For calculating the safe distance between this car and front truck according to default reaction time, this vehicle speed and front truck speed；Judge mould
Block, for judging the distance between this car and front truck whether less than safe distance；Trigger module, between Ben Che and front truck
Distance be less than safe distance when, trigger information warning.
The embodiment of the present invention in terms of existing technologies, by obtaining the distance between this car and front truck；According to acquisition
Variable quantity of the distance in Preset Time calculate speed difference between this car and front truck；This vehicle speed is obtained, and according to this car
Speed and speed difference calculate preceding vehicle speed；The default reaction time is obtained, and according to default reaction time, this vehicle speed and front truck
Speed calculates the safe distance between this car and front truck；When distance between Ben Che and front truck is less than safe distance, triggering police
Show information so that when distance that can be between Ben Che and front truck is less than safe distance, remind user's vehicle operation safety, it is to avoid
Knock into the back, the generation of the traffic accident such as car to car impact.
In addition, obtaining the default reaction time in the following manner：When calculating reaction by the facial information for gathering user
Between, and the reaction time that will be calculated as default reaction time, wherein facial information include face age and sex.Due to dissimilarity
It is not different in the reaction time of different age levels, so calculating the reaction time by according to facial information so that calculate
The reaction time for going out more conforms to age and the sex of driver, so as to the reaction time for calculating is more accurate, helps to carry
The accuracy of moving car alarm high.
In addition, obtaining the default reaction time in the following manner：When the reaction time that will be prestored is as default reaction
Between.In this way, user can prestore the reaction time and as default according to oneself reaction time usually
In the reaction time so that the default reaction time is more accurate, the accuracy of moving car alarm is favorably improved, so as to substantially increase use
Experience at family.
In addition, the reaction time that will be prestored, as the default reaction time, specifically includes：When prestoring one group of reaction
Between；A reaction time is selected from one group of reaction time as the default reaction time.In this way so that user can be with
According to oneself reaction time usually, from prestore selected in one group of reaction time a reaction time as default reaction when
Between.So that the default reaction time is more accurate, the accuracy of moving car alarm is favorably improved, so as to substantially increase user's body
Test.
In addition, obtaining the distance between this car and front truck, specifically include：Open dual camera；Obtained by dual camera
The distance between this car and front truck, so that, there is provided a kind of one kind side of implementing for obtaining this car and the distance between front truck
Formula, helps to ensure that feasibility of the invention, and the above-mentioned distance for obtaining in this way is more accurate.
In addition, obtaining this vehicle speed in the following manner：This vehicle speed is obtained by global position system GPS so that this
The simpler easy realization of acquisition modes of vehicle speed, can be with reduces cost.Or, by general-purpose serial bus USB or bluetooth
Mode read this vehicle speed in vehicle-mounted computer so that this vehicle speed of acquisition is more accurate, is favorably improved moving car alarm
Accuracy.
In addition, obtain between this car and front truck apart from when, also show the distance of acquisition；When this vehicle speed is obtained,
Also show this vehicle speed of acquisition；In vehicle speed before calculating, the preceding vehicle speed of calculating is also shown.By showing this car and front truck
The distance between, this vehicle speed and preceding vehicle speed, it is possible to use the vehicle-state of Ben Che and front truck is more intuitively known at family,
Help avoid the generation of the traffic accident accident such as knock into the back.
In addition, the 3rd acquisition module includes：Collection submodule, the facial information for gathering user；Calculating sub module, uses
In calculating reaction time, and the reaction time that will be calculated as the default reaction time by gathering the facial information of user,
Wherein facial information includes face age and sex.
In addition, alarm device for vehicle also includes：Pre- storing module, for prestoring the reaction time；3rd acquisition module, also
For reaction time as the default reaction time that will be prestored.
Brief description of the drawings
One or more embodiments are illustrative by the picture in corresponding accompanying drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element with same reference numbers label is expressed as similar element in accompanying drawing, removes
It is non-to have especially statement, the figure not composition limitation in accompanying drawing.
Fig. 1 is the flow chart according to first embodiment of the invention middle rolling car alarming method for power；
Fig. 2 is the flow chart according to second embodiment of the invention middle rolling car alarming method for power；
Fig. 3 is the block diagram according to third embodiment of the invention middle rolling car alarming device；
Fig. 4 is the block diagram according to four embodiment of the invention middle rolling car alarming device.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to each reality of the invention
The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each implementation method of the invention,
In order that reader more fully understands the application and proposes many ins and outs.But, even if without these ins and outs and base
Many variations and modification in following implementation method, it is also possible to realize the application technical scheme required for protection.
First embodiment of the invention is related to a kind of moving car alarm method.Idiographic flow is as shown in figure 1, moving car alarm side
Method includes：
Step 101, obtains the distance between this car and front truck.
Step 102, calculates the variable quantity of the above-mentioned distance in Preset Time.
For example, the distance between this car and front truck can be obtained every Preset Time.And calculate the sheet of this acquisition
The difference H1 of the distance between car and front truck and the distance between preceding this car for once obtaining and front truck.So as to calculate pre-
If the variable quantity H1 of above-mentioned distance in the time.Such as, preset time T 1 for 1ms be 0.001s, the variable quantity H1 of above-mentioned distance is
0.01 meter.
Step 103, the speed difference between this car and front truck is calculated according to the above-mentioned variable quantity for obtaining.
Specifically, the speed difference △ between this car and front truck is calculated according to H1 and T1.Wherein △=H1/T1=10m/s.
Step 104, obtains this vehicle speed.Such as, this vehicle speed of acquisition is V0。
Step 105, vehicle speed before being calculated according to this vehicle speed and above-mentioned speed difference for obtaining.
Specifically, according to this vehicle speed V for obtaining0With speed difference △, vehicle speed V before calculating1=V0-△。
Step 106, obtains the default reaction time.Such as, the default reaction time of acquisition is T0.
Step 107, judges V1Whether 0 is more than.If it is, into step 108；Otherwise, into step 109.
Step 108, safe distance be equal to this vehicle speed be multiplied by the default reaction time value subtract preceding vehicle speed be multiplied by it is default
The value in reaction time.
Specifically, due to V1>0, i.e. △<V0, so two cars are operation in the same direction.Now, safe distance H0=V0*T0-
V1*T0。
Step 109, safe distance is multiplied by default equal to the value that this vehicle speed is multiplied by the default reaction time plus preceding vehicle speed
The value in reaction time.
Specifically, due to V1<0, i.e. △>V0, so two cars are reverse relative motion.Now, safe distance H0=V0*
T0+V1*T0。
It is noted that after step 108 and step 109, being performed both by step 110.
Whether step 110, judge the distance between this car and front truck less than safe distance.If it is, into step
111；Otherwise, return to step 101.
It is assumed that now the distance between Ben Che and front truck are H2.If H2<H0, then judge between this car and front truck away from
Safe distance H0 is less than from H2.
Step 111, triggers information warning.
In actual application, information warning can be, but not limited to auditory tone cues, vibration reminding or acousto-optic hint etc..Only
If any form of information warning for reminding driver to slow down within default reaction time T0 can be realized, all should be in this hair
Within bright protection domain.
By the above, it is seen that, the distance that present embodiment allows between Ben Che and front truck is less than peace
During full distance, user vehicle operation safety is reminded, it is to avoid knock into the back, the generation of the traffic accident such as car to car impact.
Second embodiment of the present invention is related to a kind of moving car alarm method.Second embodiment is in first embodiment
On the basis of the improvement done, mainly the improvement is that：In this second embodiment, calculated by gathering the facial information of user
Go out the reaction time, and the reaction time that will be calculated as the default reaction time.
Idiographic flow is as shown in Fig. 2 moving car alarm method includes：
Step 201, opens dual camera.
Step 202, the distance between this car and front truck are obtained by dual camera.So as to, there is provided one kind obtains this car
With a kind of specific implementation of the distance between front truck, feasibility of the invention is helped to ensure that, and in this way
The above-mentioned distance for obtaining is more accurate.
It is noted that obtain between this car and front truck apart from when, can also show between this car and front truck
Distance.It is thus possible to make driver more intuitively know the vehicle-state of Ben Che and front truck, the traffic accident such as knock into the back is helped avoid
The generation of accident.
Step 203, calculates the variable quantity of the above-mentioned distance in Preset Time.
For example, the distance between this car and front truck can be obtained every Preset Time.And calculate the sheet of this acquisition
The difference H1 of the distance between car and front truck and the distance between preceding this car for once obtaining and front truck.So as to calculate pre-
If the variable quantity H1 of above-mentioned distance in the time.Such as, preset time T 1 for 1ms be 0.001s, the variable quantity H1 of above-mentioned distance is
0.01 meter.
Step 204, the speed difference between this car and front truck is calculated according to the above-mentioned variable quantity for obtaining.
Specifically, the speed difference △ between this car and front truck is calculated according to H1 and T1.Wherein △=H1/T1=10m/s.
Step 205, obtains this vehicle speed.Such as, this vehicle speed of acquisition is V0。
It is noted that can be, but not limited to obtain this vehicle speed in the following manner：By global position system GPS
Obtain this vehicle speed so that the simpler easy realization of acquisition modes of this vehicle speed, can be with reduces cost.Specifically, pass through
When GPS obtains this vehicle speed, first by high frequency sampling, the distance between this car and front truck are obtained.By Ben Che with it is preceding
The distance between car is approximately the instantaneous velocity of this car divided by the value in sampling time.The frequency Instantaneous velocity values for calculating higher are more
Close to the actual speed of this car.
Or, this vehicle speed in reading vehicle-mounted computer by way of general-purpose serial bus USB or bluetooth so that obtain
This vehicle speed for taking is more accurate, is favorably improved the accuracy of moving car alarm.
In addition, when this vehicle speed is obtained, this vehicle speed of acquisition can also be shown.Such that it is able to make user more directly perceived
The vehicle-state for knowing Ben Che and front truck, help avoid the generation of the traffic accident accident such as knock into the back.
Step 206, vehicle speed before being calculated according to this vehicle speed and above-mentioned speed difference for obtaining.
Specifically, according to this vehicle speed V for obtaining0With speed difference △, vehicle speed V before calculating1=V0-△.It is worth mentioning
, in vehicle speed before calculating, also show the preceding vehicle speed of calculating.Such that it is able to make user more intuitively know Ben Che with
The vehicle-state of front truck, helps avoid the generation of the traffic accident accident such as knock into the back.
Step 207, the reaction time is calculated by the facial information for gathering user, and the reaction time that will be calculated as
The default reaction time.Wherein facial information includes face age and sex.
Specifically, the face feature of driver is detected by front camera, driving is analyzed according to face feature
The age of member and sex.Because different sexes are different in the reaction time of different age levels, so believing by according to face
Breath calculates the reaction time so that the reaction time for calculating more conforms to age and the sex of driver, so as to what is calculated
Reaction time is more accurate, is favorably improved the accuracy of moving car alarm.Such as, can prestore corresponding to different sexes
The reaction time of each age level.After the age of driver and sex is analyzed, the age corresponding to driver is searched
With the reaction time of sex.And the reaction time that will be found is used as default reaction time T0.
Step 208, judges V1Whether 0 is more than.If it is, into step 209；Otherwise, into step 210.
Step 209, safe distance be equal to this vehicle speed be multiplied by the default reaction time value subtract preceding vehicle speed be multiplied by it is default
The value in reaction time.
Specifically, due to V1>0, i.e. △<V0, so two cars are operation in the same direction.Now, safe distance H0=V0*T0-
V1*T0。
Step 210, safe distance is multiplied by default equal to the value that this vehicle speed is multiplied by the default reaction time plus preceding vehicle speed
The value in reaction time.
Specifically, due to V1<0, i.e. △>V0, so two cars are reverse relative motion.Now, safe distance H0=V0*
T0+V1*T0。
It is noted that after step 209 and step 210, being performed both by step 211.
Whether step 211, judge the distance between this car and front truck less than safe distance.If it is, into step
212；Otherwise, return to step 201.
It is assumed that now the distance between Ben Che and front truck are H2.If H2<H0, then judge between this car and front truck away from
Safe distance H0 is less than from H2.
Step 212, triggers information warning.
In actual application, information warning can be, but not limited to auditory tone cues, vibration reminding or acousto-optic hint etc..Only
If any form of information warning for reminding driver to slow down within default reaction time T0 can be realized, all should be in this hair
Within bright protection domain.
It should be noted that in actual application, can also in the following manner obtain the default reaction time：Will be advance
The reaction time of storage is used as the default reaction time.Preferably, the reaction time that will be prestored is used as the default reaction time,
Specifically include：Prestore one group of reaction time；When a reaction time is selected from one group of reaction time as default reaction
Between.In this way so that user can select according to oneself reaction time usually from one group of reaction time is prestored
A reaction time is selected as the default reaction time.So that the default reaction time is more accurate, moving car alarm is favorably improved
Accuracy, so as to substantially increase Consumer's Experience.
By the above, it is seen that, present embodiment causes default reaction time, this vehicle speed and preceding for obtaining
Vehicle speed is more accurate, is favorably improved the accuracy of moving car alarm, so as to substantially increase Consumer's Experience.Also, can be with
Driver is more intuitively known the vehicle-state of Ben Che and front truck, help avoid the generation of the traffic accident accident such as knock into the back.
Above the step of various methods divide, be intended merely to description it is clear, can be merged into when realizing a step or
Some steps are split, multiple steps are decomposed into, as long as including identical logical relation, all in the protection domain of this patent
It is interior；To adding inessential modification in algorithm or in flow or introducing inessential design, but its algorithm is not changed
With the core design of flow all in the protection domain of the patent.
Third embodiment of the invention is related to a kind of alarm device for vehicle.As shown in figure 3, alarm device for vehicle includes：The
One acquisition module 31, for obtaining the distance between this car and front truck；First computing module 32, for being existed according to the distance for obtaining
Variable quantity in Preset Time calculates the speed difference between this car and front truck；Second acquisition module 33, is additionally operable to obtain this speed
Degree；Second computing module 34, vehicle speed before being additionally operable to be calculated according to this vehicle speed and speed difference；3rd acquisition module 35, also uses
The reaction time is preset in obtaining；3rd computing module 36, is additionally operable to according to default reaction time, this vehicle speed and preceding vehicle speed
Calculate the safe distance between this car and front truck；Judge module 37, for judging whether the distance between this car and front truck are less than
Safe distance；Trigger module 38, when being less than safe distance for the distance between Ben Che and front truck, triggers information warning.
In actual application, information warning can be, but not limited to auditory tone cues, vibration reminding or acousto-optic hint etc..Only
If any form of information warning for reminding driver to slow down within default reaction time T0 can be realized, all should be in this hair
Within bright protection domain.
By the above, it is seen that, the distance that present embodiment allows between Ben Che and front truck is less than peace
During full distance, user vehicle operation safety is reminded, it is to avoid knock into the back, the generation of the traffic accident such as car to car impact.
It is seen that, present embodiment is the apparatus embodiments corresponding with first embodiment, and present embodiment can be with
First embodiment is worked in coordination implementation.The relevant technical details mentioned in first embodiment still have in the present embodiment
Effect, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in
In first embodiment.
It is noted that each module involved in present embodiment is logic module, in actual applications, one
Individual logic unit can be a part for a physical location, or a physical location, can also be with multiple physics lists
The combination of unit is realized.Additionally, in order to protrude innovative part of the invention, will not be with solution institute of the present invention in present embodiment
The unit that the technical problem relation of proposition is less close is introduced, but this is not intended that in present embodiment do not exist other lists
Unit.
Four embodiment of the invention is related to a kind of alarm device for vehicle.4th implementation method is in the 3rd implementation method
On the basis of the improvement done, mainly the improvement is that：In the 4th implementation method, the 3rd acquisition module include collection submodule and
Calculating sub module.
Specifically, as shown in figure 4, alarm device for vehicle includes：First acquisition module 31, for obtaining this car and front truck
The distance between；First computing module 32, for calculated according to variable quantity of the distance in Preset Time for obtaining this car with it is preceding
Speed difference between car；Second acquisition module 33, is additionally operable to obtain this vehicle speed；Second computing module 34, is additionally operable to according to this
Vehicle speed and speed difference calculate preceding vehicle speed；3rd acquisition module 35, is additionally operable to obtain the default reaction time；3rd computing module
36, it is additionally operable to the safe distance calculated between this car and front truck according to default reaction time, this vehicle speed and front truck speed；Sentence
Disconnected module 37, for judging the distance between this car and front truck whether less than safe distance；Trigger module 35, for Ben Che with
When the distance between front truck is less than safe distance, information warning is triggered.
In actual application, information warning can be, but not limited to auditory tone cues, vibration reminding or acousto-optic hint etc..Only
If any form of information warning for reminding driver to slow down within default reaction time T0 can be realized, all should be in this hair
Within bright protection domain.
In addition, the 3rd acquisition module 35 includes：Collection submodule 351, the facial information for gathering user；Calculate submodule
Block 352, for calculating the reaction time by gathering the facial information of user, and the reaction time that will be calculated is anti-as presetting
Between seasonable, wherein facial information includes face age and sex.
In addition, alarm device for vehicle also includes：Pre- storing module, for prestoring the reaction time；3rd acquisition module 35,
It is additionally operable to reaction time as the default reaction time that will be prestored.
By the above, it is seen that, present embodiment causes default reaction time, this vehicle speed and preceding for obtaining
Vehicle speed is more accurate, is favorably improved the accuracy of moving car alarm, so as to substantially increase Consumer's Experience.Also, can be with
Driver is more intuitively known the vehicle-state of Ben Che and front truck, help avoid the generation of the traffic accident accident such as knock into the back.
Because second embodiment is mutually corresponding with present embodiment, therefore present embodiment can be mutual with second embodiment
It is engaged implementation.The relevant technical details mentioned in second embodiment are still effective in the present embodiment, implement second
The technique effect to be reached in mode in the present embodiment similarly it is achieved that in order to reduce repetition, no longer go to live in the household of one's in-laws on getting married here
State.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in second embodiment.
It will be appreciated by those skilled in the art that all or part of step in realizing above-described embodiment method can be by
Program is completed to instruct the hardware of correlation, and the program storage is in a storage medium, including some instructions are used to so that one
Individual equipment (can be single-chip microcomputer, chip etc.) or processor (processor) perform the whole of each embodiment method of the application
Or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiment of the invention,
And in actual applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of moving car alarm method, it is characterised in that including：
Obtain the distance between this car and front truck；
The described speed difference between car and front truck is calculated according to variable quantity of the distance for obtaining in Preset Time；
This vehicle speed is obtained, and according to vehicle speed before described vehicle speed and speed difference calculating；
The default reaction time is obtained, and is calculated according to the default reaction time, described vehicle speed and the front truck speed
Safe distance between described car and the front truck；
When the described distance between car and front truck is less than the safe distance, information warning is triggered.
2. moving car alarm method according to claim 1, it is characterised in that when obtaining default reaction in the following manner
Between：
Reaction time is calculated by the facial information for gathering user, and the reaction time that will be calculated presets as described
Reaction time, wherein facial information include face age and sex.
3. moving car alarm method according to claim 1, it is characterised in that when obtaining default reaction in the following manner
Between：
The reaction time that will be prestored as the default reaction time.
4. moving car alarm method according to claim 3, it is characterised in that the reaction time that will be prestored as
The default reaction time, specifically include：
Prestore one group of reaction time；
A reaction time is selected from one group of reaction time as the default reaction time.
5. moving car alarm method according to claim 1, it is characterised in that between described this car of acquisition and front truck away from
From specifically including：
Open dual camera；
The distance between this car and front truck are obtained by dual camera.
6. moving car alarm method according to claim 1, it is characterised in that obtain this vehicle speed in the following manner：
This vehicle speed is obtained by global position system GPS；
Or, this vehicle speed in reading vehicle-mounted computer by way of general-purpose serial bus USB or bluetooth.
7. moving car alarm method according to claim 1, it is characterised in that between described this car of acquisition and front truck away from
From when, also show the distance of acquisition；
In described this vehicle speed of acquisition, described vehicle speed of acquisition is also shown；
In vehicle speed before the calculating, the described preceding vehicle speed of calculating is also shown.
8. a kind of alarm device for vehicle, it is characterised in that including：
First acquisition module, for obtaining the distance between this car and front truck；
First computing module, described car and front truck are calculated for the variable quantity according to the distance for obtaining in Preset Time
Between speed difference；
Second acquisition module, is additionally operable to obtain this vehicle speed；
Second computing module, vehicle speed before being additionally operable to be calculated according to described vehicle speed and the speed difference；
3rd acquisition module, is additionally operable to obtain the default reaction time；
3rd computing module, is additionally operable to be calculated according to the default reaction time, described vehicle speed and the front truck speed
Safe distance between described car and the front truck；
Judge module, for judging the distance between described car and front truck whether less than the safe distance；
Trigger module, for when the described distance between car and front truck is less than the safe distance, triggering information warning.
9. alarm device for vehicle according to claim 8, it is characterised in that the 3rd acquisition module includes：
Collection submodule, the facial information for gathering user；
Calculating sub module, for calculating reaction time, and the reaction that will be calculated by gathering the facial information of user
Time includes face age and sex as the default reaction time, wherein facial information.
10. alarm device for vehicle according to claim 8, it is characterised in that the alarm device for vehicle also includes：
Pre- storing module, for prestoring the reaction time；
3rd acquisition module, is additionally operable to reaction time as the default reaction time that will be prestored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710020524.0A CN106828389A (en) | 2017-01-12 | 2017-01-12 | Moving car alarm method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710020524.0A CN106828389A (en) | 2017-01-12 | 2017-01-12 | Moving car alarm method and device |
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| Publication Number | Publication Date |
|---|---|
| CN106828389A true CN106828389A (en) | 2017-06-13 |
Family
ID=59123138
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710020524.0A Pending CN106828389A (en) | 2017-01-12 | 2017-01-12 | Moving car alarm method and device |
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| CN (1) | CN106828389A (en) |
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