CN102956045A - Event trigger based vehicle monitoring, recording and prompting device and method thereof - Google Patents
Event trigger based vehicle monitoring, recording and prompting device and method thereof Download PDFInfo
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Abstract
The invention discloses an event trigger based vehicle monitoring, recording and prompting device. The device comprises an optical engine unit, a lamp signal identifying, tracking and state monitoring unit, and a lamp signal change event triggered traffic safety prompting unit. The invention also discloses an event trigger based vehicle monitoring, recording and prompting method. The method comprises the following steps: continuously photographing the front scenery of a vehicle in which the device is positioned; finding out effective lamp signal information from the photographed images; tracking the lamp signal change event in monitoring images; detecting the driving state information of the vehicle; and giving a relevant prompt based on the driving state information and the front lamp signal change event.
Description
Technical field
The present invention relates to a kind of monitoring, record and suggestion device, particularly a kind of vehicular status monitoring based on Event triggered, record, safety reminding device and related methods.
Background technology
Conventional driving path all is based on the artificial vision to carry out, and as the driver, the driver must be careful the road traffic situation constantly, the nearby vehicle situation, and front signal lamp situation etc.The thing that the driver should be noted that in driving procedure is a lot, and long-duration driving is tired easily, and more unavoidable hundred close one dredge in the complex road surface situation, if there is not the variation of more careful important traffic signals, traffic accident just occurs easily.
Just in case unexpected genuine unfortunate the generation, just insurance company can get involved investigation and the processing of event, the responsibility of accident is distinguished in the event handling meeting, and makes different Claims Resolutions according to the difference of accident responsibility.At present traffic hazard investigation mainly is to analyze to carry out by litigant's confession and the scene of the accident, and not having accident that video data and the vehicle transport condition at that time at a moment occur can be for reference, and the identification of accident responsibility is believed and had uncertain factor.
The objective of the invention is to wish by electronic means the various cresset information that run in the Vehicle Driving Cycle process automatically to be identified, follow the trail of, monitored, and remind the driving personage to be careful these cressets variations, thereby help to improve the security of vehicle drive, thereby watch out for the generation of traffic accident.Just in case unexpected unfortunate the generation really arranged, this system and device can also record vehicle running state information and the place ahead real time video image information before and after the Accidental occurrence automatically, for crash analysis and confirmation of responsibility provide a reliable data message.
Summary of the invention
Technical matters to be solved by this invention is, for the technical deficiency of above-mentioned existing product, provides a kind of vehicle-mounted monitoring, record, safety reminding device and method based on Event triggered.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of vehicle-mounted monitoring, record and safety reminding device based on Event triggered, comprising:
Optical engine unit;
Cresset identification, tracking and Condition Monitoring Unit;
Traffic safety warning unit by the triggering of cresset change events.
The embodiment of the invention also provides a kind of vehicle-mounted monitoring based on Event triggered, record and safety instruction method, may further comprise the steps:
Place vehicle front scenery is shot with video-corder continuously;
From the image of shooting with video-corder, find out effective cresset information;
Cresset change events in the tracking monitor image;
Detect the transport condition information of place vehicle;
Provide relevant prompting based on described transport condition information and the place ahead cresset change events.
The beneficial effect that the present invention has is that it can automatically identify, follow the trail of and information and the situation of change of monitoring and driving vehicle closely-related the place ahead traffic light signal and front vehicles cresset by electronic means, also can change also according to these simultaneously providing driving safety prompt in conjunction with the transport condition when vehicle in front, be conducive to safe driving of vehicle.And when having that traffic accident is unfortunate to be occured, this system and device also can record vehicle running state information and the real time video image information before and after the Accidental occurrence automatically, for crash analysis and confirmation of responsibility provide a reliable data.
Description of drawings
Fig. 1 is the vehicle-mounted monitoring based on Event triggered, record and the safety prompting system device synoptic diagram of the embodiment of the invention;
Fig. 2 is the synoptic diagram that passes through the coloured image that the optical sensor unit obtains of the embodiment of the invention;
Fig. 3 is the functional structure block scheme based on vehicle-mounted monitoring, record and the safety reminding device of Event triggered of the embodiment of the invention;
Fig. 4 is the side cutting plane synoptic diagram based on vehicle-mounted monitoring, record and the safety reminding device of Event triggered of the embodiment of the invention;
Fig. 5 is the vehicle-mounted monitoring based on Event triggered, record and the safety instruction method flow diagram of the embodiment of the invention;
Fig. 6 be the embodiment of the invention provide the method flow diagram of relevant prompting based on vehicle running state information and the place ahead cresset change events;
The method flow diagram of vehicle running state information recording/and video image record when Fig. 7 is being occured by the realization accident of Event triggered of the embodiment of the invention;
The another method flow diagram of vehicle running state information recording/and video image record when Fig. 8 is being occured by the realization accident of Event triggered of the embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.Please refer to shown in Figure 1, the vehicle-mounted monitoring based on Event triggered of this embodiment of the invention, record and safety prompting system device synoptic diagram.11 vehicles that travel for the place ahead among the figure, 12 for to follow the front vehicle that front vehicles 11 is travelled, and 15 is red, yellow, and green traffic signal light device on the road ahead.In 15, further include red signal 15A, steady yellow 15B and green light signals 15C.When 11 run into the place ahead amber light or red signal, need to implement deceleration-operation, and before red light, stop.11 brake deceleration operation can make the brake lamp 16A of the tailstock light, and also will carry out immediately the brake deceleration operation and follow 11 front vehicle 12, so as not to 11 rear-end impacts occur.
In Fig. 1, vehicle-mounted monitoring, record and the safety reminding device of the embodiment of the invention all be equipped with in the vehicle 11 and 12, show among the figure that be disposed in the front vehicles 11 is 18A, be disposed at being in the front vehicle 12 18B (below be referred to as 18).Described car-mounted device 18 can be arranged on the bridge of vehicle usually, or the inboard of vehicle drive platform windshield, generally includes the chromatic colour pick-up lens in 18, and its viewfinder range and driver's field of front vision is suitable.18A among the figure can receive red, yellow, and green signal 15A, 15B and the 15C of the place ahead traffic lights 15, and 18B can also receive the red brake signal that is sent by front vehicles 11 brake lamp 16A except above-mentioned 15A, 15B and 15C.By above-mentioned arrangement, described electronic traffic light signal and vehicle cresset state automatic tracing and monitoring function are achieved thus.
The below is referring again to shown in Figure 2, and this is the synoptic diagram that passes through the coloured image that the optical sensor unit obtains of the embodiment of the invention.Wherein two field picture among the figure in the 20 continuous chromatic images that obtain by the optical sensor unit for front vehicle 12.15A ', 15B ', 15C ' are respectively the red, yellow, and green hot spot image that the place ahead traffic light signal 15A, 15B, 15C stay among the figure in video image picture 20, if video image picture 20 utilizes the RGB digital color to represent, then red signal only has R (redness) component in theory, steady yellow only has the R+G component, green light signals only has G (green) component, does not all have B (blueness) component in the signal of three kinds of colors of red, yellow, and green.Absolute pure R, G, R+G signal is non-existent in actual environment, but can judge according to the ratio of R, G, B in the image spot color of cresset, thereby can identify the red, yellow, and green cresset information of red, yellow, and green traffic light signal information and front vehicles, can also come further the validity (whether being produced by above-mentioned signal lamp) of hot spot to be done further to confirm by the size of hot spot in the image, the brightness of hot spot and the contrast of hot spot and peripheral scenery simultaneously.
For the further variation of monitoring traffic light signal and vehicle cresset, must carry out continuous position to confirmed effective light spot and follow the tracks of.Because vehicle can cause rocking of cresset hot spot in the process of moving, or the cresset facula position changes in time, therefore described device must change the rocking of hot spot/position and carries out intelligent analysis and judge also and upgrade at any time its positional information and status information, until described monitored hot spot signal leave image frame or become invalid.
In actual applications, the red, yellow, and green modulating signal of same group of traffic lights can not occur simultaneously, and the lamp of three kinds of colors can not appear on the same position yet.In order to catch the variation of cresset, must know the position of the different colours lamp of same group of traffic light signal.In order to address this problem, the embodiment of the invention has been introduced the concept of a dynamic area, namely all belong to the same group of traffic light signal cresset of same car (or belong to) within the particular range of effective light spot, the change of hot spot belongs to the change of same group of cresset (or same car cresset) state in this scope.Suppose vehicle 12 to overtake and enter within the coverage of traffic lights 15, at this moment 15 green light signals 15C is effective for hypothesis again, green spot 15C ' is as seen arranged in image frame 20, then green light turns amber light, turn red light by amber light again, this 15C ' that shows as in image 20 disappears, and 15B ' occurs, then be that 15B ' disappears, 15A ' occurs.In Figure 20,15A ', 15B ', 15C ' but are positioned within the dynamic area 15Z scope of traffic lights 15 definition not on same position, and the signal in this zone all belongs to same group of traffic light signal.
For different Design of Traffic Lights, the position of red, yellow, and green cresset may be different, the traffic lights that traverse is for example arranged, its cresset arrangement position is that red, the middle Huang in the left side, the right are green, and the device of the embodiment of the invention all should be able to effectively be identified for traffic light signal and the variation thereof of routine.The position of dynamic range 15Z can change along with the relative position of vehicle and traffic lights and change in the Vehicle Driving Cycle process in addition, the device of the embodiment of the invention must be implemented all-the-way tracking to these effective cressets, and the positional information of energy real-time update its dynamic area 15Z, also want and to monitor the cresset state in the 15Z, (be called the cresset change events when there being cresset to change, for example become amber light by green light) time, can in time provide sound (or voice) prompting, be careful the variation of described cresset to remind the driver.Here the all-the-way tracking monitoring that refers to refers to when the facula information of traffic light signal 15 enters video image picture 20 for the first time, observation process has just begun, no matter described hot spot is in that position in 20, perhaps become the cresset of that color, monitoring can not stop, until described cresset leaves 20 image frame, or become till the invalid signals (for example signal weakens to certain degree).
The hot spot that in Fig. 2, stays in video image picture 20 except the place ahead red, yellow, and green traffic light signal, the red hot spot 16A1 and the 16A2 that also have the brake lamp 16A of front vehicles 11 to stay, wherein 16A1 is produced by front vehicles 11 left side brake lamps, and 16A2 is then produced by front vehicles 11 the right brake lamps.For the better variation that detects cresset, defined dynamic range 16A1Z, a 16A2Z also for 16A1,16A2 here, every cresset in this scope changes the cresset that all can see same car as and changes.When for example driving at night, tailstock the right and left of front vehicles 11 also can light little red light, this can produce two red hot spot 16A1 and 16A2 at 20 the picture that affects, at this moment after monitoring, record and the safety reminding device 18 of car just can lock these two cressets corresponding dynamic range 16A1Z, 16A2Z, tracking and status monitoring, when 11 dozens of steering indicating lights of front truck, the yellow hot spot that has flicker in the scope of 16A1Z, 16A2Z occurs; When front truck 11 brake, can light the red hot spot (brake lamp light) larger, brighter than original hot spot in the scope of 16A1Z, 16A2Z; When front truck 11 lights dangerous cresset, in the scope of 16A1Z, 16A2Z flashing of great red spot can appear.The invention process regular meeting is carried out different auditory tone cueses according to above-mentioned different situation to the driver, makes the driver can in time be careful the variation of cresset situation on the road, thereby is conducive to safe driving.
In Fig. 2, also have two lanes 10, lane 10 can be identified by electronic video analysis.The meaning of identification lane is and can judges the correlativity of front vehicles cresset, for example the front vehicles on same lane (for example 11) is correlated with, if described front vehicles has brake lamp or dangerous cresset to occur, then 18B will provide safety instruction; If but front vehicles and 12 is on the same lane, then the correlativity of described front vehicles is just more weak, and 18B can need not to provide safety instruction.Another meaning of identification lane is and can differentiates the transport condition of vehicle, described transport condition comprises at the uniform velocity, acceleration, deceleration regime and dead ship condition, at this moment lane can be used as an object of reference and uses, by the mutation analysis to lane, can also determine the transport condition of described vehicle.Based on described driving states information and the place ahead cresset status information, more accurate, more humane safe driving prompting can be made by system, for example when the place vehicle be driving states and the place ahead traffic lights during by green flavescence, providing slows down points out; When the place vehicle at the uniform velocity/the state front vehicles of giving it the gun brake lamp is by without becoming sometimes, providing the prompting of slowing down; When the place vehicle be the dangerous cresset of non-dead ship condition and front vehicles by without becoming sometimes, provide dangerous tip; When the place vehicle is that dead ship condition and the place ahead traffic lights are yellow by red stain, or front vehicles brake lamp, dangerous cresset by have become without the time, providing the prompting etc. of leaveing.
In above-mentioned driving state analysis, lane 10 can be thought an effective road object of reference, in actual applications, the railing on road both sides, lamppost etc. can also be used as the road object of reference except lane.During as for driving at night, can also change to analyze by the light of illuminating street lamp the driving states of place vehicle, the hommization driving safety prompt function based on driving states, road traffic light signal state and front vehicles cresset state is achieved.
The below is referring again to shown in Figure 3, and this is the functional structure block scheme based on vehicle-mounted monitoring, record and the safety reminding device of Event triggered of the embodiment of the invention.18 is vehicle-mounted monitoring among the figure, the agent set of record and safety reminding device, 21 (comprise red for the place ahead traffic light signal, yellow, green light) or the front vehicles back light (comprise brake lamp, steering indicating light, danger light) wigwag that sends, described wigwag sees through optical lens module 22 and enters optical sensor unit 23 (Image Acquisition System, CMOS photoreceptor/image inductor for example), the digitizing color image information (comprising color and monochrome information) that optical sensor unit 23 produces thus a series of (not waiting to tens frames from several frames of per second), described digital image information can further be delivered to digital signal processor 24 (for example DSP, Digital Signal Processor) and process.In described DSP, include digital signal pretreatment unit, cresset recognition unit, cresset tracking cell, cresset Condition Monitoring Unit etc., these functionalization unit are to realize by software program or logical program (firmware) mode of solidifying in DSP, be a kind of functional module elements of curing, these functions can realize by following manner:
At first 24 can carry out pre-service to the data image signal that optical sensor unit 23 sends, described pre-service comprises the cresset that will include blue signal in the image (hot spot that stays of street lamp, automobile front lamp for example, these hot spots are invalid hot spot) filter out, because blue signal is invalid signals, do not comprise blue signal in the red, yellow, and green cresset.The signal that in addition brightness can also be lower than certain numerical value filters out, because the system of the embodiment of the invention will monitor is traffic light signal and the vehicle cresset information with certain brightness, weak cresset correspondence at a distance, can ignore.By above-mentioned processing, image information can greatly reduce, and is conducive to the realization of following correlation module function.
In described functional module, cresset identification is a most basic function, because at first will effectively identify useful cresset, could do to effective cresset the monitoring of further tracking and state.Identify for cresset, except carrying out color and the brightness analysis, also to analyze in conjunction with position and the size of cresset in image, be the roadside traffic light signal to differentiate described cresset, road top traffic light signal, or cresset is believed in brake lamp, steering indicating light or danger that the front vehicles taillight sends.For example the position of traffic light signal is normally in the first half of video image picture, and the position of vehicle cresset is normally in the latter half of video image picture.Except cresset identification, the embodiment of the invention also can be analyzed described cresset and the correlativity when vehicle in front (namely installing the vehicle at 18 places), the monitoring target of attaching most importance to that correlativity is large, for example be in picture centre position (namely with when vehicle in front belonging to the same track) in the front vehicles cresset, or the cresset area is larger, or cresset the correlativity that all illustrates with when vehicle in front such as to increase stronger, and be in the cresset of the picture left and right sides, and area cresset less or that reducing is just more weak with the correlativity when vehicle in front.
After described cresset was effectively identified, system just followed the tracks of processing by the cresset tracking cell to described cresset, and being described in that relevant cresset is followed the tracks of has related description among Fig. 2, just do not given unnecessary details here.The variation that focuses on the effective cresset of Real-Time Monitoring of the embodiment of the invention, and provide relevant prompting according to the cresset change events, be careful the variation of described cresset to remind the driver, be conducive to realize safe driving.
The cresset change events that need to make safety instruction mainly comprises following several situation:
When 1, the place ahead traffic lights was by green flavescence, the prompting driver was slowed down;
2, when turning Huang, prompting driver's the place ahead traffic lights leaves by red;
3, when (but not being changed by other color cresset) appearred in image frame, the prompting driver was careful first for the place ahead redness or yellow traffic light;
When 4, brake lamp, hazard lamp signal appearred in front vehicles, the prompting driver was slowed down;
When 5, the steering indicating light signal appearred in front vehicles, the prompting driver was careful.
More than be that embodiment of the invention Real-Time Monitoring cresset changes the most basic situation that provides safety instruction.In actual applications, can also in device, dispose a vehicle running state detecting unit 32, described detecting unit can detect the transport condition of place vehicle, comprise at the uniform velocity state, acceleration mode, deceleration regime and dead ship condition etc., so that system and device can provide more accurate, more humane safe driving prompting according to vehicle running state and the place ahead cresset situation, for example during by green flavescence, providing the prompting of slowing down for driving states the place ahead traffic lights when place vehicle (namely when vehicle in front); When the place vehicle be non-deceleration and non-dead ship condition and front vehicles brake lamp by without becoming sometimes, providing the prompting of slowing down; When the place vehicle be non-dead ship condition and front vehicles danger light by without becoming sometimes, provide dangerous tip; When the place vehicle is that dead ship condition and the place ahead traffic lights are yellow by red stain, or front vehicles brake lamp, danger light by have become without the time, providing the prompting etc. of leaveing.
Described vehicle running state detecting unit can be acceleration transducer, whether described acceleration transducer is in the acceleration or deceleration state except detecting vehicle, can also judge whether described vehicle is at the uniform velocity transport condition and dead ship condition, because at the uniform velocity transport condition is different from the normal acceleration (shock conditions) of dead ship condition.In actual applications, even can be by the accumulation of acceleration being calculated the current travel speed of estimating vehicle.Except passing through the transport condition of acceleration transducer perception vehicle, can also realize by the video image analysis to the road lane, in this case, the vehicle running state detecting unit is taken on by digital signal processing unit 24, one of them functional module elements that can regard digital signal processor 24 as, relevant mode existing explanation in Fig. 2 of analyzing vehicle running state by the road object of reference has not just been given unnecessary details here.
What merit attention is, adopt the vehicle running state detecting unit of acceleration transducer that more function can also be arranged, acceleration data storage in the Vehicle Driving Cycle process can be preserved as the Vehicle Driving Cycle historical summary in nonvolatile memory 26 (such as Flash etc.) comprising system, this has certain meaning in the crash analysis of vehicle in the future.In addition, described acceleration transducer can also be as a flip flop equipment, and when traffic hazard occured, triggering system was shot with video-corder continuously to vehicle front scenery, and the image document of shooting with video-corder is stored in the nonvolatile memory 26 as the crash analysis evidence.Because traffic hazard generally all is attended by violent vibrations when occuring, this vibrations/collision shows as on the rapid change events of acceleration, for example bringing to a halt before the vehicle rear-end collision can produce a very large negative acceleration, when vehicle knocks into the back, acceleration more can be undergone mutation, no matter the vehicle that knocks into the back or the vehicle that is knocked into the back is not always the case, therefore data and the videograph with the rapid change triggers traffic accident of vehicle acceleration is appropriate.
Except need to noting down with regard to event a moment that meets accident, people are concerned about the cause and effect of described traffic accident toward the contact meeting, if system can also preserve vehicle running state information and the video information that occur front 10～30 seconds in traffic hazard, believe traffic accident analysis is very helpful.Realize that the method that traffic hazard generation front and back data is preserved has two kinds, the one, during from vehicle launch, when vehicle is in non-dead ship condition, just transport condition information and the video information of vehicle are preserved, the required memory span of this mode is larger, and much no matter capacity has, always have a moment that storer is finished (being filled with), this just need to carry out Recycling to storer in the starting position.This is feasible in actual applications, because what accident investigation was concerned about is that tens seconds the data in front and back occurs accident, after accident occurs (carry is not major accident), vehicle should be out-of-work before the exploration of the scene of the accident, under the vehicle parking state, video recording also can stop synchronously, the useful data of being correlated with before and after accident occurs so just can intactly be kept within the nonvolatile memory, conveniently does crash analysis.
Realize traffic hazard occur before and after data another method of preserving be that 10～30 seconds long buffer storage area (comprising image buffers storage area and data buffering storage area) is set, the image of shooting with video-corder at ordinary times and data all are kept in this buffer zone that is made of dynamic storage (RAM) and do not take the storage space of nonvolatile memory (Flash).Only have when traffic accident occurs, preserve among just video/the numerical data of described buffer zone being backuped to Flash, until described vehicle stops fully, or default video time at the expiration till (for example default video recording 30 seconds).In embodiments of the present invention, image and data information before and after the accident are processed and are kept at by DSP among the Flash, therefore also can be with relative assembly referred to as the logout instrument.
Also include traffic safety warning unit 25 in Fig. 3, the output of first-selected audio frequency is as prompting in embodiments of the present invention, for example can " serge " represents red light one and turns amber light, prepares to leave; " serge serge " two prompting drivers are careful the road surface situation, and " serge serge serge " three prompting drivers slow down; Repeat " serge " sound and then represent dangerous situation etc.Certainly also be fine with voice output, such as make the promptings such as " red light ", " green light ", " deceleration ", " turning to ", " danger " with voice, this prompting also is clear and hommization, depends on the hobby of practical application and decides.
In the agent set 18 of Fig. 3, also include signal monitoring range regulation unit 31 and signal sensitivity regulon 33.The former both can adjust visual range by regulating optical lens module 22, can also be by setting the change that sensing range realizes the signal monitoring scope in the digital signal pretreatment unit.As for the Adjustment of sensitivity unit, then mainly realize the adjustment of monitoring distance by the setting to effective cresset spot size and brightness, this regulon Main Function is in DSP, and realizes by the correlation function module of DSP.
Use for convenient, also include rechargable battery device 36 in agent set 18, described rechargable battery should supply the whole minimum one day time of device work.Also include in the drawings charging interface device 37 (such as DC socket or USB socket etc.), in order to described rechargable battery is charged, or directly be supplied to described agent set 18 to use in the 12V direct current of vehicle.In Fig. 3, except agent set 18, also include holder device 38, in 38, include holder combination and separative element 39, make agent set conveniently implement combination and to separate with described support.When combination, agent set can be fixed on the bridge by holder device, or is fixed in the inboard of bridge windshield; When separating, described agent set can be removed by the user and take back indoor charging.For convenient described combination and the lock out operation realized, described support includes combination and separative element 39.
In actual applications, can also comprise Vehicular satellite location navigation unit 34 and cellular mobile phone telephony unit 35 in the agent set 18, make the system and device of the embodiment of the invention have simultaneously satellite navigation and wireless communication function, can one-object-many-purposes, thus the product function of the embodiment of the invention increased.
The below is referring again to shown in Figure 4, and this is the side cutting plane synoptic diagram based on vehicle-mounted monitoring, record and the safety reminding device of Event triggered of the embodiment of the invention.18 is the agent set of the embodiment of the invention among the figure, and 21 is the light signal of the place ahead scenery and relevant cresset, enters the inside of agent set 18 by optical lens module 22.In 18, include catoptron 29, the direction that can change light 21 makes it to enter inside, optical sensor unit 23 (cmos image inductor), optical sensor unit 23 produces digitized colour picture signal and signal is passed to digital information processing system (DSP digital signal processor), is then implemented the functions such as aforesaid digital signal pre-service, cresset identification, cresset tracking and cresset status monitoring by DSP.
In actual applications, 23 and 24 can be made on the integrated circuit (IC) chip that is called " light engine " (Optical Engine), with the number that reduces required chip and the performance that improves chip, also can further reduce the volume of agent set and the cost of economy system simultaneously, this is the structure and method of the present optical mouse of picture a bit.Also include PCB wiring board 28 in 18, described light engine is arranged on the PCB wiring board, and forms a complete functional module (PCBA) with other device of wiring board.In agent set 18, also include audio/speech Tip element 25, signal monitoring range regulation unit 31, and signal sensitivity regulon 33,31,33 two regulons can operate/implement with potentiometer or toggle switch.In addition, also include rechargable battery 36 and charging interface device 37 in 18, and nonvolatile memory 26, data transmission interface unit 27 (can read 26 data and share USB interface with charging interface device 37).All said apparatus have formed the agent set 18 of described vehicle-mounted monitoring, record and safety reminding device.
Fig. 5 is the vehicle-mounted monitoring based on Event triggered, record and the safety instruction method flow diagram of the embodiment of the invention, comprises the steps:
Step S501 is for to shoot with video-corder continuously place vehicle front scenery;
Step S502 is for finding out effective cresset information from the image of shooting with video-corder;
Step S503 is the cresset change events in the tracking monitor image;
Step S504 is for detecting the transport condition information of place vehicle;
Step S505 is for providing relevant prompting based on described transport condition information and the place ahead cresset change events.
In above-mentioned steps, the transport condition of described vehicle comprises at the uniform velocity, acceleration, deceleration regime and dead ship condition; Described effective cresset changes and comprises the place ahead traffic lights by green flavescence or yellow by red stain, and front vehicles brake lamp or danger light are by having or by the change nothing is arranged without becoming.
Fig. 6 be the embodiment of the invention provide the method flow diagram of relevant prompting based on vehicle running state information and the place ahead cresset change events, be to the further specifying of above-mentioned steps S505, specifically may further comprise the steps:
Step S601 providing the prompting of slowing down for when described vehicle being non-dead ship condition the place ahead traffic light signal during by green flavescence;
Step S602 provides the prompting of slowing down for being that non-deceleration and non-dead ship condition front vehicles brake cresset is become sometimes by nothing when described vehicle;
Step S603 provides dangerous tip for being that the dangerous cresset of non-dead ship condition front vehicles is become sometimes by nothing when described vehicle;
Step S604 is yellow by red stain for being dead ship condition the place ahead traffic light signal when described vehicle, or front vehicles brake lamp, dangerous cresset by have become without the time, provide the prompting of leaveing.
The method flow diagram of vehicle running state information recording/and video image record was a kind of expanded function on method shown in Figure 6 when Fig. 7 was being occured by the realization accident of Event triggered of the embodiment of the invention, specifically may further comprise the steps:
Step S701 deposits in the image buffers storage area for the described vehicle front scene image information that will shoot with video-corder continuously;
Step S702 deposits in the data buffering storage area for the acceleration information relevant with described vehicle running state that will detect;
Step S703 is for when the rapid change events of acceleration appears in described vehicle, with the data backup in described image buffers storage area and the data buffering storage area within the nonvolatile memory, until described vehicle enters dead ship condition, or default video time at the expiration till.
Image buffers storage area in above-mentioned and data buffering storage area are dynamic storage (RAM) district with a certain size capacity, can store video image information and the acceleration information information of certain hour length (for example 10～30 seconds), described information adopts the method for first in first out to process usually, makes within the limited storage space to keep up-to-date video and data message.When there being mishap to occur, for example crash, the rapid variation of acceleration will appear, and the vehicle that for example knocks into the back can produce the negative acceleration of a sudden change, and the vehicle that is knocked into the back then produces the positive acceleration of a sudden change.By generation that can the affirmation accident to the detection of described acceleration, and the information data before and after accident occured deposits within the nonvolatile memory (for example F1ash storer), and valuable field accident information is preserved.The advantage of this disposal route is the relevant information before and after a reservation accident occurs, and can greatly save storage space, and it is very simple and easy to find out accident information from storer.
The another method flow diagram of vehicle running state information recording/and video image record also was a kind of expanded function on method shown in Figure 6 when Fig. 8 was being occured by the realization accident of Event triggered of the embodiment of the invention, may further comprise the steps:
Step S801 is for when described vehicle running state is non-dead ship condition, directly be stored in described vehicle front scene image information of shooting with video-corder continuously and the acceleration information relevant with vehicle running state within the nonvolatile memory, when nonvolatile memory occurring and be filled with event, in the starting position Recycling of described nonvolatile memory.
Fig. 7, method shown in Figure 8 have similar functional effect, and different is that method shown in Figure 8 need to have larger nonvolatile memory capacity, and searching also of accident data bothered relatively, and advantage then is to need not dynamic storage (buffer memory).Both respectively have relative merits, can decide according to actual conditions and needs.
Simultaneously above device and method as herein described only is part preferred implementation of the present invention; should be understood that; for the person of ordinary skill of the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. vehicle-mounted monitoring, record and safety reminding device based on an Event triggered is characterized in that, comprising:
Optical engine unit;
Cresset identification, tracking and Condition Monitoring Unit;
Traffic safety warning unit by the triggering of cresset change events.
2. vehicle-mounted monitoring as claimed in claim 1, record and safety reminding device is characterized in that, comprise acceleration transducer and the logout instrument that is triggered by acceleration transducer.
3. vehicle-mounted monitoring as claimed in claim 1, record and safety reminding device is characterized in that, comprise the vehicle running state detecting unit, and described traffic safety warning unit sends the associated safety prompting based on described cresset change events and vehicle running state.
4. vehicle-mounted monitoring as claimed in claim 1, record and safety reminding device is characterized in that, described optical engine unit comprises cmos image inductor and DSP digital signal processor.
5. vehicle-mounted monitoring as claimed in claim 1, record and safety reminding device is characterized in that:
Described cresset recognition unit can be identified the place ahead red, yellow, and green traffic light signal, and front vehicles brake lamp, steering indicating light, dangerous cresset;
Described cresset tracking cell can be followed the tracks of the effective cresset in the image, until described cresset in image, disappear or become invalid;
Described cresset Condition Monitoring Unit can be monitored the variation of the effective cresset in the place ahead, comprise that the place ahead traffic light signal reaches from green to yellow by red to turn yellow, and front vehicles brake lamp, dangerous cresset is by having and by the change nothing is arranged without becoming.
6. vehicle-mounted monitoring as claimed in claim 1, record and safety reminding device is characterized in that:
Comprise holder device, described holder device can be fixed in bridge or bridge windshield, and the main body of described car-mounted device can conveniently be implemented combination and separate with described holder device; And
Comprise signal monitoring range regulation unit, signal sensitivity regulon, rechargable battery and charging interface device.
7. the vehicle-mounted monitoring based on Event triggered, record and safety instruction method is characterized in that, may further comprise the steps:
Place vehicle front scenery is shot with video-corder continuously;
From the image of shooting with video-corder, find out effective cresset information;
Cresset change events in the tracking monitor image;
Detect the transport condition information of place vehicle;
Provide relevant prompting based on described transport condition information and the place ahead cresset change events.
8. vehicle-mounted monitoring as claimed in claim 7, record and safety instruction method is characterized in that:
The transport condition of described vehicle comprises at the uniform velocity, acceleration, deceleration regime and dead ship condition;
Described cresset change events comprises the place ahead traffic light signal by green flavescence or yellow by red stain, and front vehicles brake lamp, dangerous cresset are by having or by the change nothing is arranged without becoming;
The described step that provides relevant prompting based on transport condition information and the place ahead cresset change events comprises:
When described vehicle is non-dead ship condition and the place ahead traffic light signal during by green flavescence, providing the prompting of slowing down;
When described vehicle be non-deceleration and non-dead ship condition and front vehicles brake cresset by without becoming sometimes, providing the prompting of slowing down;
When described vehicle be the dangerous cresset of non-dead ship condition and front vehicles by without becoming sometimes, provide dangerous tip;
When described vehicle is that dead ship condition and the place ahead traffic light signal are yellow by red stain, or front vehicles brake lamp, dangerous cresset by have become without the time, provide the prompting of leaveing.
9. vehicle-mounted monitoring as claimed in claim 7, record and safety instruction method is characterized in that, may further comprise the steps:
The described vehicle front scene image information of shooting with video-corder is continuously deposited in the image buffers storage area;
The acceleration information relevant with described vehicle running state that detects deposited in the data buffering storage area;
When the rapid change events of acceleration appears in described vehicle, with the data backup in described image buffers storage area and the data buffering storage area within the nonvolatile memory, until described vehicle enters dead ship condition, or default video time at the expiration till.
10. vehicle-mounted monitoring as claimed in claim 7, record and safety instruction method is characterized in that, may further comprise the steps:
When described vehicle running state is non-dead ship condition, directly be stored in described vehicle front scene image information of shooting with video-corder continuously and the acceleration information relevant with vehicle running state within the nonvolatile memory, when nonvolatile memory occurring and be filled with event, in the starting position Recycling of described nonvolatile memory.
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| CN 201110241900 CN102956045A (en) | 2011-08-19 | 2011-08-19 | Event trigger based vehicle monitoring, recording and prompting device and method thereof |
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| CN 201110241900 CN102956045A (en) | 2011-08-19 | 2011-08-19 | Event trigger based vehicle monitoring, recording and prompting device and method thereof |
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| CN102956045A true CN102956045A (en) | 2013-03-06 |
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| CN 201110241900 Pending CN102956045A (en) | 2011-08-19 | 2011-08-19 | Event trigger based vehicle monitoring, recording and prompting device and method thereof |
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| CN105946710A (en) * | 2016-04-29 | 2016-09-21 | 孙继勇 | Traveling auxiliary device |
| CN106157388A (en) * | 2016-07-06 | 2016-11-23 | 福州瑞芯微电子股份有限公司 | Local coding driving recording method and system |
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| CN107197079A (en) * | 2016-03-15 | 2017-09-22 | 联发科技股份有限公司 | Event detecting method, the electronic system with event detection mechanism and accessory |
| CN105946710A (en) * | 2016-04-29 | 2016-09-21 | 孙继勇 | Traveling auxiliary device |
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Application publication date: 20130306 |