CN105279813A - Electronic equipment and switching method and device of power supply modes of electronic equipment - Google Patents
Electronic equipment and switching method and device of power supply modes of electronic equipment Download PDFInfo
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- CN105279813A CN105279813A CN201510695524.1A CN201510695524A CN105279813A CN 105279813 A CN105279813 A CN 105279813A CN 201510695524 A CN201510695524 A CN 201510695524A CN 105279813 A CN105279813 A CN 105279813A
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Abstract
The invention relates to the technical field of intelligent terminals, in particular to electronic equipment and a switching method and device of power supply modes of the electronic equipment. The method comprises steps as follows: whether data acquired by a gravity sensor meets a first preset condition characterizing that the equipment is in an idle state is judged; when the first condition is met, the equipment is controlled to acquire at least two pictures based on a certain time interval, and whether the equipment generates spatial displacement is judged according to difference of the two pictures; after the condition that the equipment does not generate the spatial displacement is determined, the equipment is controlled to be in a sleep mode; when the condition that the equipment is not actuated is determined according to the data acquired by the gravity sensor in the preset first time range, the equipment is controlled to be in a shutdown mode from the sleep mode. The automatic switching of the power supply modes of the electronic equipment is realized, the precision of implementation of the scheme is improved, and the problem of errors caused by the fact that constant-speed movement of the equipment is misjudged as the idle state when whether the equipment generates the displacement is determined only by the gravity sensor is solved.
Description
[technical field]
The present invention relates to intelligent terminal technical field, particularly a kind of electronic equipment and powering mode changing method, device.
[background technology]
Along with the development of technology, increasing electronic equipment has shoot function.Such as, conventional on automobile drive recorder.Drive recorder can registration of vehicle video image in the process of moving and sound, is equivalent to the black box of vehicle.When user drives, the video camera on drive recorder can be opened, just can take by video camera the landscape or traffic information that obtain on the way.
In prior art, in order to the powering mode realizing electronic equipment switches, conventional mode is mainly two kinds, first method arranges sensor and timer in electronic equipment internal, if within the predetermined time, detects that sensor does not meet certain condition of work in such as 30 seconds, then electronic equipment carries out pattern switching automatically, such as enter park mode, but the data only obtained by sensor under which are to judge the mode of operation of electronic equipment, the situation of a lot of erroneous judgement can be there is; Second method is the switch key that user manually presses the corresponding powering mode on electronic equipment, and make electronic equipment enter corresponding mode of operation, such as powered-down key makes electronic equipment enter shutdown mode, and cannot realize the automatic switchover of powering mode.And, existing electronic equipment such as drive recorder, powered by cigar lighter socket, if do not disconnect the connection of this cigar lighter socket and drive recorder after a stop of the vehicle, this drive recorder still can work within a certain period of time, the accumulator electric-quantity of waste vehicle, causes vehicle to need cannot start during normal power supply; Namely after there is a lot of electronic equipment powered-down key in prior art, electronic equipment still may be in running order, do not close the corresponding function module or the related application of electronic equipment.
[summary of the invention]
The object of the present invention is to provide at least one problem above-mentioned, provide a kind of electronic equipment and powering mode changing method, device.
For realizing this object, the present invention adopts following technical scheme:
The invention provides a kind of power electronic equipment mode switching method, comprise the following steps:
Judge whether the data that gravity sensor obtains meet the first condition preset characterizing this equipment and remain static;
When meeting first condition, controlling this equipment based on certain hour interval acquiring at least two pictures, whether producing space displacement by this equipment of diversity judgement of two pictures;
After this equipment of judgement does not produce space displacement, control this equipment and enter park mode;
When this equipment of data judging obtained by gravity sensor within the very first time of presetting is not activated, control this equipment and enter shutdown mode from park mode.
Concrete, whether the described data judging that gravity sensor obtains meet the step characterizing the first condition preset that this equipment remains static, and comprising:
In the second time range preset, obtain multi-group data by gravity sensor, often organize packet containing corresponding multiple data;
Judge the corresponding multiple parameter whether these many groups corresponding multiple data are all less than the characterization device that comprises in this first condition and remain static;
When the plurality of data are all less than this corresponding multiple parameter, the data characterizing gravity sensor acquisition meet the first condition preset characterizing this equipment and remain static; Otherwise first condition is not satisfied.
Concrete, whether produced the step of space displacement by this equipment of diversity judgement of two pictures, comprise the steps:
Calculate the quantized data of the diff area between described any two pictures;
Described quantized data and the second condition preset are compared;
When described quantized data does not meet described second condition, characterize described equipment and produce space displacement; Otherwise, characterize this equipment and keep stationary state and do not produce space displacement.
Disclosed according to one embodiment of the invention, described quantized data comprises the gray-scale value of multiple pixel, described second condition comprises the gray difference value corresponding to described gray-scale value, whether be all less than corresponding gray difference value by the more described multiple gray-scale value of correspondence, determine whether to meet described second condition.
Further, after this equipment of judgement produces space displacement, keep this equipment powering mode constant.
Concrete, the step that this equipment of data judging obtained by gravity sensor within the very first time of presetting is not activated, comprising:
Within the very first time of presetting, obtain multi-group data by gravity sensor, often organize packet containing corresponding multiple data;
Judge whether these many groups corresponding multiple data are less than the multiple parameter of correspondence when this default equipment activated;
When the plurality of data are all less than the multiple parameter of default correspondence, characterize this equipment and do not activated; Otherwise, characterize this equipment and activated.
Further, after judging whether these many groups corresponding multiple data are less than the step of the multiple parameter of correspondence when this default equipment activated, also step is comprised:
When judging to obtain the plurality of data and being all not less than the multiple parameter of correspondence when this default equipment activated, control this equipment and enter power on mode.
Further, when the data judging obtained by gravity sensor within the very first time of presetting obtain this equipment activated time, control this equipment and enter power on mode from park mode.
Further, after this equipment of control enters power on mode from park mode, also step is comprised:
In the 3rd time range preset, control this equipment based on certain hour interval acquiring at least two pictures, whether produce space displacement by this equipment of diversity judgement of two pictures;
After this equipment of judgement does not produce space displacement, control this equipment and enter park mode from power on mode; Otherwise, keep this equipment to be in power on mode.
Concrete, when this equipment is in power on mode, gravity sensor be all in opening for the camera head obtaining described picture.
Optionally, whether described this equipment of diversity judgement passing through two pictures produces in the step of space displacement, also comprises step:
The difference between described two pictures is determined based on Edge Detection.
Concrete, when this equipment is in park mode, keeps gravity sensor to be in opening, be in closed condition for the camera head obtaining described picture.
Concrete, when this equipment is in shutdown mode, described gravity sensor and be all in closed condition with the camera head for obtaining described picture.
Present invention also offers a kind of power electronic equipment mode-changeover device, include:
First judge module, for judging whether the data that gravity sensor obtains meet the first condition preset characterizing this equipment and remain static;
Second judge module, for when meeting first condition, controlling this equipment based on certain hour interval acquiring at least two pictures, whether producing space displacement by this equipment of diversity judgement of two pictures;
First handover module, for after this equipment of judgement does not produce space displacement, controls this equipment and enters park mode;
Second handover module, when this equipment of data judging for being obtained by gravity sensor within the very first time of presetting not being activated, controlling this equipment and entering shutdown mode from park mode.
Further, described first judge module also includes acquiring unit and the first comparing unit,
Described acquiring unit, obtains multi-group data by gravity sensor in the second time range preset, and often organizes packet containing corresponding multiple data;
Described first comparing unit, for judging the corresponding multiple parameter whether these many groups corresponding multiple data are all less than the characterization device that comprises in this first condition and remain static;
When the plurality of data are all less than this corresponding multiple parameter, the data characterizing gravity sensor acquisition meet the first condition preset characterizing this equipment and remain static; Otherwise first condition is not satisfied.
Further, described second judge module also includes computing unit and the second comparing unit,
Described computing unit, for calculating the quantized data of the diff area between described any two pictures;
Described second comparing unit, for comparing described quantized data and the second condition preset;
When described quantized data does not meet described second condition, characterize described equipment and produce space displacement; Otherwise, characterize this equipment and keep stationary state and do not produce space displacement.
Disclosed according to one embodiment of present invention, described quantized data comprises the gray-scale value of multiple pixel, described second condition comprises the gray difference value corresponding to described gray-scale value, whether be all less than corresponding gray difference value by the more described multiple gray-scale value of correspondence, determine whether to meet described second condition.
Further, after described second judge module judges that this equipment produces space displacement, keep this equipment powering mode constant.
Concrete, described second handover module, also for obtaining multi-group data by gravity sensor within the very first time of presetting, often organizes packet containing corresponding multiple data; And
Judge whether these many groups corresponding multiple data are less than the multiple parameter of correspondence when this default equipment activated; And
When the plurality of data are all less than the multiple parameter of default correspondence, characterize this equipment and do not activated; Otherwise, characterize this equipment and activated.
Further, described second handover module also for when judging to obtain the plurality of data and being all not less than the multiple parameter of correspondence when this default equipment activated, controls this equipment and enters power on mode.
Further, when the second handover module judges that obtaining this equipment activated, control this equipment and enter power on mode from park mode.
Further, when the second handover module controls after this equipment enters power on mode from park mode, also for:
In the 3rd time range preset, control this equipment based on certain hour interval acquiring at least two pictures, whether produce space displacement by this equipment of diversity judgement of two pictures; And
After this equipment of judgement does not produce space displacement, control this equipment and enter park mode from power on mode; Otherwise, keep this equipment to be in power on mode.
Concrete, when this equipment is in power on mode, gravity sensor be all in opening for the camera head obtaining described picture.
Optionally, described second judge module is also for determining the difference between described two pictures based on Edge Detection.
Concrete, when this equipment is in park mode, keeps gravity sensor to be in opening, be in closed condition for the camera head obtaining described picture.
Concrete, when this equipment is in shutdown mode, described gravity sensor and be all in closed condition with the camera head for obtaining described picture.
Present invention also offers a kind of electronic equipment, described electronic equipment includes device as described above.
Compared with prior art, the present invention possesses following advantage:
1, power electronic equipment mode switching method of the present invention, after judging that data that gravity sensor obtains meet and characterize default first condition that this equipment remains static, also to control the corresponding camera head of this equipment based on certain hour interval acquiring at least two pictures, and judge whether this equipment produces space displacement by the difference of two pictures; After judging that obtaining this equipment does not produce space displacement, just control this equipment and enter park mode; Namely the picture difference obtained in conjunction with gravity sensor and camera head in the present invention is jointly carried out determining apparatus and whether is produced space displacement, when equipment does not produce space displacement, automatically controls this equipment and enters park mode.Achieve the automatic switchover of power electronic equipment pattern, improve the degree of accuracy that this programme is implemented, avoid single gravity sensor that adopts and carry out determining apparatus when whether producing displacement, the at the uniform velocity movement of equipment is mistaken for stationary state and brings the problem of error.
2, further, this equipment is after entering park mode, also whether activated by gravity sensor determining apparatus within the scope of certain hour, when judging that obtaining equipment does not activated, control this equipment and enter shutdown mode from park mode, the equipment that can realize is switched to shutdown mode from park mode automatically when meeting certain condition, further saves energy; And within the scope of certain hour, multiple data that gravity sensor obtains are judged, avoid gravity sensor temporary parking causes erroneous judgement possibility to this programme.
3, further, electronic equipment of the present invention obtains multi-group data by gravity sensor within the very first time of presetting, often organize packet containing corresponding multiple data, when judging to obtain the plurality of data and being all not less than the multiple parameter of correspondence when this default equipment activated, control this equipment and enter power on mode.Namely be previously stored with relevant multiple parameter when gravity sensor activated in this electronic equipment, this electronic equipment can be directly switch to power on mode by the corresponding data obtained according to gravity sensor within the scope of certain hour; Judgment mode degree of accuracy is high, and judges without the need to the picture obtained in conjunction with camera head more again, saves the electricity of electronic equipment further.
The aspect that the present invention adds and advantage will part provide in the following description, and these will become obvious from the following description, or be recognized by practice of the present invention.
[accompanying drawing explanation]
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the program flow diagram of an embodiment of power electronic equipment mode switching method of the present invention;
Fig. 2 is the program flow diagram of an embodiment of power electronic equipment mode switching method in the present invention;
Fig. 3 is the program flow diagram of an embodiment of power electronic equipment mode switching method in the present invention;
Fig. 4 is the structural representation of an embodiment of power electronic equipment mode-changeover device of the present invention;
Fig. 5 is the structural representation of the first judge module in power electronic equipment mode-changeover device of the present invention;
Fig. 6 is the structural representation of the second judge module in power electronic equipment mode-changeover device of the present invention.
[embodiment]
Be further described the present invention below in conjunction with accompanying drawing and exemplary embodiment, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.In addition, if the detailed description of known technology is for illustrating that feature of the present invention is unnecessary, then omitted.
Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in instructions of the present invention " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.Should be appreciated that, when we claim element to be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or also can there is intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or wirelessly to couple.Wording "and/or" used herein comprises one or more whole or arbitrary unit listing item be associated and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology), have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.It should also be understood that, those terms defined in such as general dictionary, should be understood to that there is the meaning consistent with the meaning in the context of prior art, unless and by specific definitions as here, otherwise can not explain by idealized or too formal implication.
Those skilled in the art of the present technique are appreciated that, here used " terminal ", " terminal device " had both comprised the equipment of wireless signal receiver, it only possesses the equipment of the wireless signal receiver without emissive ability, comprise again the equipment receiving and launch hardware, it has and on bidirectional communication link, can perform the reception of two-way communication and launch the equipment of hardware.This equipment can comprise: honeycomb or other communication facilitiess, its honeycomb or other communication facilities of having single line display or multi-line display or not having multi-line display; PCS (PersonalCommunicationsService, PCS Personal Communications System), it can combine voice, data processing, fax and/or its communication ability; PDA (PersonalDigitalAssistant, personal digital assistant), it can comprise radio frequency receiver, pager, the Internet/intranet access, web browser, notepad, calendar and/or GPS (GlobalPositioningSystem, GPS) receiver; Conventional laptop and/or palmtop computer or other equipment, it has and/or comprises the conventional laptop of radio frequency receiver and/or palmtop computer or other equipment.Here used " terminal ", " terminal device " can be portable, can transport, be arranged in the vehicles (aviation, sea-freight and/or land), or be suitable for and/or be configured at local runtime, and/or with distribution form, any other position operating in the earth and/or space is run.Here used " terminal ", " terminal device " can also be communication terminal, access terminals, music/video playback terminal, can be such as PDA, MID (MobileInternetDevice, mobile internet device) and/or there is the mobile phone of music/video playing function, also can be the equipment such as intelligent television, Set Top Box.
The application scenarios of method of the present invention and device, be hardware foundation based on the drive recorder with gravity sensor, camera, processor and memory module, carry out exemplary illustration for the drive recorder of the processor being provided with linux system, and this drive recorder is arranged on automobile.But should be noted that this description is only exemplary, scope of the present invention is not limited to this, and the method and apparatus of the embodiment of the present invention is also applicable to other operating systems, have nothing to do with operating system in essence.Be understood that, the present invention is not only confined to drive recorder, also comprises other and does not have user interface, or can not realize other electronic equipments of powering mode automatic switchover, such as intelligent video camera head, intelligent watch etc.
Refer to accompanying drawing 1, be the program flow diagram of an embodiment of a kind of power electronic equipment mode switching method provided by the invention, it comprises the following steps:
S11, judges whether the data that gravity sensor obtains meet the first condition preset characterizing this equipment and remain static.
Be understood that, gravity sensor is connected with processor in drive recorder, such as, this gravity sensor is connected with the processor in driving recording by I2C (IntegratedCircuit) or SPI (SerialPeripheralInterface) interface, certainly, also can be other suitable connected mode, the present invention limit this.Can detect according to the change of acceleration value, automobile is along X, Y or Z tri-acceleration value of axle, judges whether automobile remains static by gravity sensor.Such as, in one embodiment of the invention, when vehicle stationary is motionless, the acceleration value of gravity sensor is respectively (0,0,0), certainly, in the operation of reality, the acceleration value of high-precision gravity sensor can have small change, can not be definitely all zero.
Concrete, refer to accompanying drawing 2, be the program flow diagram of an embodiment of step S11, specifically comprise the steps:
S110, obtains multi-group data by gravity sensor in the second time range preset, and often organizes packet containing corresponding multiple data;
S111, judges the corresponding multiple parameter whether these many groups corresponding multiple data are all less than the characterization device that comprises in this first condition and remain static.
Further, when judging that obtaining multiple data is all less than this corresponding multiple parameter, the data characterizing gravity sensor acquisition meet the first condition preset characterizing this equipment and remain static; Otherwise first condition is not satisfied.
Be understood that, in an illustrative embodiment of the invention, described second time range is in 20 minutes, obtains 5 groups of data based on the time intervals of 4 minutes by gravity sensor, and often group data all include three data of corresponding X, Y, Z axis; Whether the corresponding data then judging in the 5 groups of data obtained is less than corresponding multiple parameter that the characterization device that comprises in this first condition remains static, wherein the plurality of parameter can be three parameters corresponding to X, Y, Z axis be stored in advance in drive recorder storage medium, such as these three corresponding parameters are (0.002 respectively, 0.002,0.001), certainly these data need the X that sampling many groups gravity sensor obtains when vehicle stationary, Y, the acceleration value of Z axis is averaged and obtains.When these 4 groups of data are all less than three parameters of this correspondence, characterize the first condition meeting and preset, judge to carry the automobile of this drive recorder as stationary state; Otherwise do not meet this first condition, automobile is not static.
Further, refer to accompanying drawing 1, the inventive method also comprises step:
S12, when meeting first condition, controlling this equipment based on certain hour interval acquiring at least two pictures, whether producing space displacement by this equipment of diversity judgement of two pictures.
In abovementioned steps S11, when the data obtained by gravity sensor meet characterize this drive recorder remain static first condition time, the camera head controlling drive recorder again obtains at least two pictures based on certain time interval, whether produces space displacement by this drive recorder of diversity judgement of two pictures.
Concrete, in the present invention, the step that the camera head controlling drive recorder obtains at least two pictures based on certain time interval can be realized by following two embodiments.
1, in one embodiment of the invention, described picture triggers and takes pictures by calling exposal model and obtain.At drive recorder with in the processor of linux system, pre-loaded have drive the USB driver of camera.Be understood that, can realize communicating with USB camera by calling USB bottom operation storehouse libusb, the steering order of USB is provided, switching camera is camera mode, and the parameter such as the time interval, camera aperture, shutter, ISO of taking pictures is set by software instruction, capture based on certain time interval and obtain at least two pictures.
2, in another embodiment of the present invention, described Target Photo obtains by intercepting and capturing the video image of corresponding time point.Based on certain time interval, the frame of video static data of corresponding time point is intercepted and captured by certain intercepting and capturing algorithm, obtains at least two pictures.
Further, after drive recorder obtains at least two pictures based on the candid photograph of certain hour interval, judge whether this drive recorder produces space displacement by the difference between two between picture.Concrete, refer to accompanying drawing 3, for whether being produced the program flow diagram of space displacement by the diversity judgement drive recorder of two pictures, specifically comprise the steps:
S120, calculates the quantized data of the diff area between described any two pictures;
S121, compares described quantized data and the second condition preset; When described quantized data does not meet described second condition, characterize described equipment and produce space displacement; Otherwise, characterize this equipment and keep stationary state and do not produce space displacement.
Concrete, described quantized data comprises the gray-scale value of multiple pixel, and accordingly, described second condition comprises the corresponding gray difference value be stored in advance in drive recorder storage medium.Whether be all less than default gray difference value by the gray-scale value of the multiple pixels obtaining diff area, determine whether to meet described second condition.When described multiple gray-scale value is all less than this gray difference value, characterizes drive recorder and be in illegal state and do not produce space displacement; Otherwise, characterize this drive recorder and produce space displacement.
Preferably, in order to avoid the automobile occurring being provided with this drive recorder do not travel time, but automobile is other to be had the pedestrian of motion or automobile and causes the situation of erroneous judgement, the present embodiment judges the grey scale pixel value of the diff area calculated between described any two pictures based on the Edge Detection of image, the Edge check operator adopted can be the operators such as Roberts, Sobel, Prewitt, Canny and the Log existed in prior art, also can be modified hydrothermal process based on above-mentioned existing Edge check operator, the present embodiment limit this.
Further, refer to accompanying drawing 1, the method for the invention also comprises step:
S13, after this equipment of judgement does not produce space displacement, controls this equipment and enters park mode.
Concrete, when from abovementioned steps S12 result of determination, obtain drive recorder when not producing space displacement, control drive recorder and enter park mode; Otherwise, after judgement obtains drive recorder generation space displacement, keep the power on mode of drive recorder constant.Wherein, in an embodiment of the invention, when drive recorder is in park mode, keep gravity sensor to be in opening, and the camera head for obtaining picture is in closed condition; When drive recorder is in power on mode, the camera head of gravity sensor and acquisition picture is all in opening.
Further, refer to accompanying drawing 1, the method for the invention also comprises step:
S14, when this equipment of data judging obtained is not activated, controls this equipment and enters shutdown mode from park mode within the very first time of presetting by gravity sensor.
Concrete, after drive recorder enters park mode, within the very first time of presetting, obtain multi-group data by gravity sensor, often organize packet containing corresponding multiple data; Judge whether the corresponding multiple data of this multi-group data are less than the multiple parameter of correspondence when this default drive recorder activated; When the plurality of data are all less than the multiple parameter of default correspondence, characterize this drive recorder and do not activated; Otherwise, characterize this drive recorder and activated.When drive recorder does not activated, control this drive recorder and enter shutdown mode from park mode, wherein when drive recorder is in shutdown mode, in drive recorder, gravity sensor and camera head are all in closed condition.
In an illustrative embodiment of the invention, described very first time scope is 48 hours, obtains 16 groups of data based on the time intervals of 3 hours by gravity sensor, and often group data all include three data of corresponding X, Y, Z axis; Whether the corresponding data then judging in the 16 groups of data obtained is less than corresponding multiple parameter when this default drive recorder activated, wherein the plurality of parameter can be three parameter areas corresponding to X, Y, Z axis be stored in advance in drive recorder storage medium, certainly these data need the X that sampling many groups gravity sensor obtains when automobile activated, Y, the acceleration value of Z axis and obtaining.When these 16 groups of data are all less than three parameters of this correspondence, characterize this drive recorder and do not activated, the automobile namely carrying this drive recorder is still stationary state; Otherwise characterize this drive recorder to have activated.
Further, after by gravity sensor, drive recorder detects that automobile activated, control this drive recorder and enter power on mode from park mode.But might not represent that automobile is real starting because automobile activated, be also likely owing to being subject to external force collision or running into caused by descending.Therefore, after drive recorder enters power on mode, also need to control one's own profession car registering instrument based on certain hour interval acquiring at least two pictures in the 3rd time range preset, judge whether this drive recorder produces space displacement by the difference of two pictures; After this drive recorder of judgement does not produce space displacement, control this equipment and enter park mode from power on mode; Otherwise, preserve this equipment and be in shutdown mode.Wherein, judge whether this drive recorder produces the method for space displacement by the difference of two pictures, the same with the method that the pixel gray-scale value that aforementioned employing Edge Detection obtains multiple image edge judges, do not repeat them here.
Further, in another embodiment of the present invention, when the multi-group data obtained by gravity sensor within the very first time of presetting all is not less than the multiple parameter of correspondence when default automobile activated, controls this drive recorder and enter power on mode.It should be noted that, this parameter needs the X that sampling many groups gravity sensor obtains when automobile activated certainly, Y, the acceleration value of Z axis and obtaining, and the numerical value detected due to the gravity sensor of each automobile when starting should within the scope of a finite value.When detecting that the data that acceleration transducer obtains drop within the scope of this finite value, namely the automobile normal actuation of this drive recorder of carrying can be concluded, control after this drive recorder enters power on mode, at least two pictures are obtained, without the need to judging whether the automobile carrying this drive recorder is subjected to displacement according to the difference of this at least two pictures without the need to controlling filming apparatus.Namely be previously stored with relevant multiple parameter when gravity sensor activated in this electronic equipment, this electronic equipment can be directly switch to power on mode by the corresponding data obtained according to gravity sensor; Judgment mode degree of accuracy is high, and judges without the need to the picture obtained by camera head again, saves the electricity of electronic equipment further.
In sum, power electronic equipment mode switching method of the present invention, after judging that data that gravity sensor obtains meet and characterize default first condition that this equipment remains static, also to control the corresponding camera head of this equipment based on certain hour interval acquiring at least two pictures, and judge whether this equipment produces space displacement by the difference of two pictures; After judging that obtaining this equipment does not produce space displacement, just control this equipment and enter park mode; Namely the picture difference obtained in conjunction with gravity sensor and camera head in the present invention is jointly carried out determining apparatus and whether is produced space displacement, when equipment does not produce space displacement, automatically controls this equipment and enters park mode.Achieve the automatic switchover of power electronic equipment pattern, improve the degree of accuracy that this programme is implemented, avoid single gravity sensor that adopts and carry out determining apparatus when whether producing displacement, the at the uniform velocity movement of equipment is mistaken for stationary state and brings the problem of error.
Further, according to the function modoularization thinking of computer software, the invention provides a kind of power electronic equipment mode-changeover device, refer to Fig. 4, this terminal comprises the first judge module 11, second judge module 12, first handover module 13 and the second handover module 14, utilize this first judge module 11, second judge module 12, first handover module 13 and the second handover module 14 to erect the principle framework of whole device, thus realize modularization embodiment, the concrete concrete function disclosing each module and realize below.
Described first judge module 11, for judging whether the data that gravity sensor obtains meet the first condition preset characterizing this equipment and remain static.
Be understood that, gravity sensor is connected with processor in drive recorder, such as, this gravity sensor is connected with the processor in driving recording by I2C (IntegratedCircuit) or SPI (SerialPeripheralInterface) interface, certainly, also can be other suitable connected mode, the present invention limit this.Can detect according to the change of acceleration value, automobile is along X, Y or Z tri-acceleration value of axle, judges whether automobile remains static by gravity sensor.Such as, in one embodiment of the invention, when vehicle stationary is motionless, the acceleration value of gravity sensor is respectively (0,0,0), certainly, in the operation of reality, the acceleration value of high-precision gravity sensor can have small change, can not be definitely all zero.
Concrete, refer to accompanying drawing 5, described first judge module 11 also includes acquiring unit 110 and the first comparing unit 111.
Described acquiring unit 110, for obtaining multi-group data by gravity sensor in the second time range preset, often organizes packet containing corresponding multiple data;
Described first comparing unit 111, for judging the corresponding multiple parameter whether these many groups corresponding multiple data are all less than the characterization device that comprises in this first condition and remain static.
Further, when described first comparing unit 111 judges that obtaining multiple data is all less than this corresponding multiple parameter, the data characterizing gravity sensor acquisition meet the first condition preset characterizing this equipment and remain static; Otherwise first condition is not satisfied.
Be understood that, in an illustrative embodiment of the invention, described second time range is in 20 minutes, and described acquiring unit 110 obtains 5 groups of data based on the time interval of 4 minutes by gravity sensor, and often group data all include three data of corresponding X, Y, Z axis; Whether the corresponding data then judging in the 5 groups of data obtained is less than corresponding multiple parameter that the characterization device that comprises in this first condition remains static, wherein the plurality of parameter can be three parameters corresponding to X, Y, Z axis be stored in advance in drive recorder storage medium, such as these three corresponding parameters are (0.002 respectively, 0.002,0.001), certainly these data need the X that sampling many groups gravity sensor obtains when vehicle stationary, Y, the acceleration value of Z axis is averaged and obtains.When described first comparing unit 111 obtain these 4 groups of data be all less than three parameters of this correspondence time, characterize the first condition meeting and preset, judge that the automobile of this drive recorder of carrying is as stationary state; Otherwise do not meet this first condition, automobile is not static.
Further, accompanying drawing 4 is referred to.Described second judge module 12, for when meeting first condition, controlling this equipment based on certain hour interval acquiring at least two pictures, whether producing space displacement by this equipment of diversity judgement of two pictures.
When aforementioned first judge module 11 by the data that gravity sensor obtains meet characterize this drive recorder remain static first condition time, the camera head that second judge module 12 controls drive recorder again obtains at least two pictures based on certain time interval, whether produces space displacement by this drive recorder of diversity judgement of two pictures.
Concrete, in the present invention, the camera head that described second judge module 12 controls drive recorder specifically can be realized by following two embodiments based on certain time interval acquisition at least two pictures.
1, in one embodiment of the invention, described picture triggers and takes pictures by calling exposal model and obtain.At drive recorder with in the processor of linux system, pre-loaded have drive the USB driver of camera.Be understood that, can realize communicating with USB camera by calling USB bottom operation storehouse libusb, the steering order of USB is provided, switching camera is camera mode, and the parameter such as the time interval, camera aperture, shutter, ISO of taking pictures is set by software instruction, capture based on certain time interval and obtain at least two pictures.
2, in another embodiment of the present invention, described Target Photo obtains by intercepting and capturing the video image of corresponding time point.Based on certain time interval, the frame of video static data of corresponding time point is intercepted and captured by certain intercepting and capturing algorithm, obtains at least two pictures.
Further, described second judge module 12 control drive recorder based on certain hour interval capture obtain at least two pictures after, judge whether this drive recorder produces space displacement by the difference between two between picture.Concrete, refer to accompanying drawing 6, described second judge module 12 also includes computing unit 120 and the second comparing unit 121.
Described computing unit 120, for calculating the quantized data of the diff area between described any two pictures;
Described second comparing unit 121, for comparing described quantized data and the second condition preset; When described quantized data does not meet described second condition, characterize described equipment and produce space displacement; Otherwise, characterize this equipment and keep stationary state and do not produce space displacement.
Concrete, described quantized data comprises the gray-scale value of multiple pixel, and accordingly, described second condition comprises the corresponding gray difference value be stored in advance in drive recorder storage medium.Whether described second comparing unit 121 is all less than default gray difference value by the gray-scale value of multiple pixels in comparing difference region, determines whether to meet described second condition.When described multiple gray-scale value is all less than this gray difference value, characterizes drive recorder and be in illegal state and do not produce space displacement; Otherwise, characterize this drive recorder and produce space displacement.
Preferably, in order to avoid the automobile occurring being provided with this drive recorder do not travel time, but automobile is other to be had the pedestrian of motion or automobile and causes the situation of erroneous judgement, the present embodiment judges the grey scale pixel value of the diff area calculated between described any two pictures based on the Edge Detection of image, the Edge check operator adopted can be the operators such as Roberts, Sobel, Prewitt, Canny and the Log existed in prior art, also can be modified hydrothermal process based on above-mentioned existing Edge check operator, the present embodiment limit this.
Further, refer to accompanying drawing 4, described first handover module 13, for after this equipment of judgement does not produce space displacement, control this equipment and enter park mode.
Concrete, when in the result of determination from aforementioned second judge module 12, obtain drive recorder when not producing space displacement, described first handover module 13 enters park mode for controlling drive recorder; Otherwise after described second judge module 12 judges that obtaining drive recorder produces space displacement, described first handover module 13 is for keeping the power on mode of drive recorder constant.Wherein, in an embodiment of the invention, when drive recorder is in park mode, keep gravity sensor to be in opening, and the camera head for obtaining picture is in closed condition; When drive recorder is in power on mode, the camera head of gravity sensor and acquisition picture is all in opening.
Further, refer to accompanying drawing 4, described second handover module 14, when this equipment of data judging for being obtained by gravity sensor within the very first time of presetting not being activated, controlling this equipment and entering shutdown mode from park mode.
Concrete, after drive recorder enters park mode, described second handover module 14 obtains multi-group data by gravity sensor within the very first time of presetting, and often organizes packet containing corresponding multiple data; Judge whether the corresponding multiple data of this multi-group data are less than the multiple parameter of correspondence when this default drive recorder activated again; When the plurality of data are all less than the multiple parameter of default correspondence, characterize this drive recorder and do not activated; Otherwise, characterize this drive recorder and activated.When drive recorder does not activated, described second handover module 14 controls this drive recorder and enters shutdown mode from park mode, and wherein when drive recorder is in shutdown mode, in drive recorder, gravity sensor and camera head are all in closed condition.
In an illustrative embodiment of the invention, described very first time scope is 48 hours, obtains 16 groups of data based on the time intervals of 3 hours by gravity sensor, and often group data all include three data of corresponding X, Y, Z axis; Whether the corresponding data that then described second handover module 14 judges in the 16 groups of data obtained is less than corresponding multiple parameter when this default drive recorder activated, wherein the plurality of parameter can be three parameter areas corresponding to X, Y, Z axis be stored in advance in drive recorder storage medium, certainly these data need the X that sampling many groups gravity sensor obtains when automobile activated, Y, the acceleration value of Z axis and obtaining.When these 16 groups of data are all less than three parameters of this correspondence, characterize this drive recorder and do not activated, the automobile namely carrying this drive recorder is still stationary state; Otherwise characterize this drive recorder to have activated.
Further, after by gravity sensor, described second handover module 14 detects that automobile activated, control this drive recorder and enter power on mode from park mode.But might not represent that automobile is real starting because automobile activated, be also likely owing to being subject to external force collision or running into caused by descending.Therefore, after drive recorder enters power on mode, described second handover module 14 also needs to control one's own profession car registering instrument based on certain hour interval acquiring at least two pictures in the 3rd time range preset, and judges whether this drive recorder produces space displacement by the difference of two pictures; After this drive recorder of judgement does not produce space displacement, described second handover module 14 controls this equipment and enters park mode from power on mode; Otherwise, preserve this equipment and be in shutdown mode.Wherein, judge whether this drive recorder produces the method for space displacement by the difference of two pictures, the same with the method that the pixel gray-scale value that aforementioned second judge module 12 adopts Edge Detection to obtain multiple image edge judges, do not repeat them here.
Further, in another embodiment of the present invention, when the multi-group data that described second handover module 14 is obtained by gravity sensor within the very first time of presetting all is not less than the multiple parameter of correspondence when default automobile activated, controls this drive recorder and enter power on mode.It should be noted that, this parameter needs the X that sampling many groups gravity sensor obtains when automobile activated certainly, Y, the acceleration value of Z axis and obtaining, and the numerical value detected due to the gravity sensor of each automobile when starting should within the scope of a finite value.When described second handover module 14 detects that the data that acceleration transducer obtains drop within the scope of this finite value, namely the automobile normal actuation of this drive recorder of carrying can be concluded, control after this drive recorder enters power on mode, at least two pictures are obtained, without the need to judging whether the automobile carrying this drive recorder is subjected to displacement according to the difference of this at least two pictures without the need to controlling filming apparatus.Namely be previously stored with relevant multiple parameter when gravity sensor activated in this electronic equipment, this electronic equipment can be directly switch to power on mode by the corresponding data that described second handover module 14 obtains according to gravity sensor; Judgment mode degree of accuracy is high, and judges without the need to the picture obtained by camera head again, saves the electricity of electronic equipment further.
In sum, power electronic equipment mode-changeover device of the present invention, after judging that data that gravity sensor obtains meet and characterize default first condition that this equipment remains static, also to control the corresponding camera head of this equipment based on certain hour interval acquiring at least two pictures, and judge whether this equipment produces space displacement by the difference of two pictures; After judging that obtaining this equipment does not produce space displacement, just control this equipment and enter park mode; Namely the picture difference obtained in conjunction with gravity sensor and camera head in the present invention is jointly carried out determining apparatus and whether is produced space displacement, when equipment does not produce space displacement, automatically controls this equipment and enters park mode.Achieve the automatic switchover of power electronic equipment pattern, improve the degree of accuracy that this programme is implemented, avoid single gravity sensor that adopts and carry out determining apparatus when whether producing displacement, the at the uniform velocity movement of equipment is mistaken for stationary state and brings the problem of error.
Further, present invention also offers a kind of electronic equipment, described electronic equipment comprises power electronic equipment mode-changeover device as the aforementioned, and detail refers to the description of aforementioned electronic devices powering mode switching device shifter, does not repeat them here.Be understood that, electronic equipment of the present invention is not only confined to drive recorder, also comprises other and does not have user interface, or can not realize other electronic equipments of powering mode automatic switchover, such as intelligent video camera head, intelligent watch etc.
In instructions provided herein, although the description of a large amount of details.But can understand, embodiments of the invention can be put into practice when not having these details.In certain embodiments, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.
Although shown exemplary embodiments more of the present invention above, but it should be appreciated by those skilled in the art that, when not departing from principle of the present invention or spirit, can make a change these exemplary embodiments, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. a power electronic equipment mode switching method, is characterized in that, comprises the following steps:
Judge whether the data that gravity sensor obtains meet the first condition preset characterizing this equipment and remain static;
When meeting first condition, controlling this equipment based on certain hour interval acquiring at least two pictures, whether producing space displacement by this equipment of diversity judgement of two pictures;
After this equipment of judgement does not produce space displacement, control this equipment and enter park mode;
When this equipment of data judging obtained by gravity sensor within the very first time of presetting is not activated, control this equipment and enter shutdown mode from park mode.
2. method according to claim 1, is characterized in that: whether the described data judging that gravity sensor obtains meet the step characterizing the first condition preset that this equipment remains static, and comprising:
In the second time range preset, obtain multi-group data by gravity sensor, often organize packet containing corresponding multiple data; ;
Judge the corresponding multiple parameter whether these many groups corresponding multiple data are all less than the characterization device that comprises in this first condition and remain static;
When the plurality of data are all less than this corresponding multiple parameter, the data characterizing gravity sensor acquisition meet the first condition preset characterizing this equipment and remain static; Otherwise first condition is not satisfied.
3. method according to claim 1, is characterized in that, whether is produced the step of space displacement, comprise the steps: by this equipment of diversity judgement of two pictures
Calculate the quantized data of the diff area between described any two pictures;
Described quantized data and the second condition preset are compared;
When described quantized data does not meet described second condition, characterize described equipment and produce space displacement; Otherwise, characterize this equipment and keep stationary state and do not produce space displacement.
4. method according to claim 3, it is characterized in that: described quantized data comprises the gray-scale value of multiple pixel, described second condition comprises the gray difference value corresponding to described gray-scale value, whether be all less than corresponding gray difference value by the more described multiple gray-scale value of correspondence, determine whether to meet described second condition.
5. method according to claim 1, is characterized in that: after this equipment of judgement produces space displacement, keep this equipment powering mode constant.
6. method according to claim 1, is characterized in that, the step that this equipment of data judging obtained by gravity sensor within the very first time of presetting is not activated, and comprising:
Within the very first time of presetting, obtain multi-group data by gravity sensor, often organize packet containing corresponding multiple data;
Judge whether these many groups corresponding multiple data are less than the multiple parameter of correspondence when this default equipment activated;
When the plurality of data are all less than the multiple parameter of default correspondence, characterize this equipment and do not activated; Otherwise, characterize this equipment and activated.
7. method according to claim 6, is characterized in that, after judging whether these many groups corresponding multiple data are less than the step of the multiple parameter of correspondence when this default equipment activated, also comprises step:
When judging to obtain the plurality of data and being all not less than the multiple parameter of correspondence when this default equipment activated, control this equipment and enter power on mode.
8. method according to claim 1, is characterized in that: when the data judging obtained by gravity sensor within the very first time of presetting obtain this equipment activated time, control this equipment and enter power on mode from park mode.
9. a power electronic equipment mode-changeover device, is characterized in that, includes:
First judge module, for judging whether the data that gravity sensor obtains meet the first condition preset characterizing this equipment and remain static;
Second judge module, for when meeting first condition, controlling this equipment based on certain hour interval acquiring at least two pictures, whether producing space displacement by this equipment of diversity judgement of two pictures;
First handover module, for after this equipment of judgement does not produce space displacement, controls this equipment and enters park mode;
Second handover module, when this equipment of data judging for being obtained by gravity sensor within the very first time of presetting not being activated, controlling this equipment and entering shutdown mode from park mode.
10. an electronic equipment, is characterized in that: described electronic equipment includes device as claimed in claim 9.
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| CN105279813B (en) | 2019-03-05 |
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Effective date of registration: 20220719 Address after: Room 801, 8th floor, No. 104, floors 1-19, building 2, yard 6, Jiuxianqiao Road, Chaoyang District, Beijing 100015 Patentee after: BEIJING QIHOO TECHNOLOGY Co.,Ltd. Address before: 100088 room 112, block D, 28 new street, new street, Xicheng District, Beijing (Desheng Park) Patentee before: BEIJING QIHOO TECHNOLOGY Co.,Ltd. Patentee before: Qizhi software (Beijing) Co.,Ltd. |