CN108492616A

CN108492616A - A kind of dead ship condition on parking stall determines method and device

Info

Publication number: CN108492616A
Application number: CN201810321745.6A
Authority: CN
Inventors: 韩超; 程建辉; 孙晓辉; 覃忠斌; 杨远兴
Original assignee: Zhejiang Dahua Technology Co Ltd
Current assignee: Zhejiang Dahua Technology Co Ltd
Priority date: 2018-04-11
Filing date: 2018-04-11
Publication date: 2018-09-04
Anticipated expiration: 2038-04-11
Also published as: CN108492616B

Abstract

The invention discloses a kind of dead ship conditions on parking stall to determine method and device, due in inventive embodiments, when the intensity of the second ultrasonic wave received is more than preset first intensity threshold, first update is carried out to ultrasonic wave confidence level, when the intensity of the second ultrasonic wave is not more than preset first intensity threshold, second update is carried out to ultrasonic wave confidence level, when the first updated first ultrasonic wave confidence level is more than preset first confidence threshold value, determines that the dead ship condition on parking stall is to have vehicle；When the second updated second ultrasonic wave confidence level is less than preset second confidence threshold value, determine the dead ship condition on parking stall for no vehicle, it therefore can be to avoid due to ultrasonic intensity variation in short-term, cause the distance measured inaccurate, or when having barrier in parking stall in short-term, cause to judge by accident, and then determines the inaccurate problem of the dead ship condition meeting on parking stall.

Description

A kind of dead ship condition on parking stall determines method and device

Technical field

The present invention relates to field of video monitoring more particularly to a kind of dead ship condition on parking stall to determine method and device.

Background technology

With the constantly improve and people's the accelerating rhythm of life of market economy, demand the becoming in rapid growth of automobile The quantity of gesture, automobile increases sharply.With increasing sharply for automobile quantity, occur that parking difficulty, parking lot management are difficult to ask Topic.In order to solve these problems, effective scheme is the dead ship condition on accurately determining each parking stall, and then according to each parking The dead ship condition of position carries out the management in parking lot.

When determining the dead ship condition on parking stall in the prior art, ultrasonic sensor is usually used and carries out range measurement, When ultrasonic sensor measure distance be less than preset distance threshold when, judge that there is vehicle on parking stall, otherwise, judge parking stall without Vehicle.Problem of the existing technology is that ultrasonic wave is interfered larger, the variations such as temperature or humidity in short-term by ambient enviroment first, The Strength Changes that can lead to the ultrasonic wave of transmitting cause the distance measured inaccurate, and then determine the dead ship condition meeting on parking stall Inaccuracy, or in short-term when thering is barrier to be present in parking stall, vehicle can be mistaken for, cause determine parking stall dead ship condition It can be inaccurate.

Invention content

An embodiment of the present invention provides a kind of dead ship conditions on parking stall to determine method and device, to solve the prior art The problem of the dead ship condition inaccuracy on middle determining parking stall.

An embodiment of the present invention provides a kind of dead ship conditions on parking stall to determine method, the method includes：

Emit the first ultrasonic wave when reaching the preset time point, and receives the second ultrasonic wave being reflected back；Judge Whether the intensity of second ultrasonic wave is more than preset first intensity threshold；

If so, ultrasonic wave confidence level is increased by the first numerical value, and the first update is carried out to ultrasonic wave confidence level,

If not, ultrasonic wave confidence level is subtracted second value, and the second update is carried out to ultrasonic wave confidence level；

Judge whether the first updated first ultrasonic wave confidence level is more than preset first confidence threshold value, if so, Determine that the dead ship condition on parking stall is to have vehicle, and capture the first image；Judging the second updated second ultrasonic wave confidence level is It is no to be less than preset second confidence threshold value, if so, determining that the dead ship condition on parking stall is no vehicle, and capture the second image.

Further, the method further includes：

Third image is obtained when reaching preset time point, judges to whether there is car plate in the third image；

If so, car plate confidence level is increased third value, and third update is carried out to car plate confidence level, if not, will Car plate confidence level subtracts the 4th numerical value, and carries out the 4th update to car plate confidence level；

Judge whether the updated first car plate confidence level of third is more than preset third confidence threshold value, if so, really The dead ship condition for determining parking stall is to have vehicle；Judge whether the 4th updated second car plate confidence level is less than preset 4th confidence Threshold value is spent, if so, determining that the dead ship condition on parking stall is no vehicle.

Further, the dead ship condition on the determining parking stall includes for no vehicle：

If the second car plate confidence level is less than preset 4th confidence threshold value, and the second ultrasonic wave confidence level is less than in advance If the second confidence threshold value, determine the dead ship condition on parking stall for no vehicle.

Further, before being updated to car plate confidence level, the method further includes：

Obtain the pixel quantity shared by the car plate；Judge whether the pixel quantity is more than preset quantity threshold Value；

It is described to include to the progress third update of car plate confidence level：

If the pixel quantity is more than preset amount threshold, third update is carried out to car plate confidence level；

It is described to include to the 4th update of car plate confidence level progress：

If the pixel quantity is not more than preset amount threshold, the 4th update is carried out to car plate confidence level.

Further, the method further includes：

When the second car plate confidence level is less than preset 4th confidence threshold value, the first ultrasonic wave confidence level is more than preset the When one confidence threshold value, it is the prompt message that unlicensed vehicle or car plate are blocked to send out the stopped automobile in parking stall；

When the first car plate confidence level is more than preset third confidence threshold value, the second ultrasonic wave confidence level is less than preset the When two confidence threshold values, the prompt message of ultrasonic sensor failure is sent out.

Further, after the prompt message for sending out ultrasonic sensor failure, the method further includes：

Adjust the frequency and electric current of the ultrasonic wave of transmitting.

Further, the dead ship condition on the determining parking stall is after having vehicle, and the method further includes：

To determining that the dead ship condition on parking stall is to have the read-around ratio of vehicle to be updated, judge that updated first number is It is no to reach preset first frequency threshold value, if so, the first time interval between two neighboring preset time point is adjusted For preset second time interval；

After the dead ship condition on the determining parking stall is no vehicle, the method further includes：

To determining that the dead ship condition on parking stall is updated for the read-around ratio of no vehicle, judge that updated second number is It is no to reach preset second frequency threshold value, if so, the first time interval between two neighboring preset time point is adjusted For preset second time interval；Wherein, preset first time interval is less than preset second time interval.

Judge whether the dead ship condition on the parking stall that upper one preset time point determined is no vehicle, if so, capturing the 4th Image, and the 5th image of upper one preset time point acquisition and the 4th image are preserved sequentially in time；

Judge whether the dead ship condition on the parking stall that upper one preset time point determined is to have vehicle, if so, capturing the 6th Image, and the 7th image of upper one preset time point acquisition and the 6th image are preserved sequentially in time.

Further, after the second ultrasonic wave that the reception is reflected back, the method further includes：

When judging the dead ship condition on parking stall of upper one preset time point determination to there is vehicle, second ultrasound is judged Whether intensity of wave is less than preset second intensity threshold, if so, capturing the 8th image, wherein preset second intensity Threshold value is less than preset first intensity threshold；

Judge to whether there is the first license board information in the 8th image, if so, judging that a upper preset time point was obtained Whether the second license board information in the 9th image taken and the first license board information in the 8th image are consistent, if not, really The corresponding automobile of fixed second license board information sails out of parking stall, and the corresponding automobile of first license board information drives into parking stall.

Further, before capturing the first image or the second image, the method further includes：

Judge whether current scene is night scenes, if so, control light compensating lamp is opened, if not, control light compensating lamp closes It closes.

The first control instruction is sent to indicator light, the indicator light is controlled and shows the first color；

The second control instruction is sent to indicator light, the indicator light is controlled and shows the second color.

On the other hand, an embodiment of the present invention provides a kind of dead ship condition determining device on parking stall, described device includes：

First judgment module for emitting the first ultrasonic wave when reaching the preset time point, and is received and is reflected back The second ultrasonic wave；Judge whether the intensity of second ultrasonic wave is more than preset first intensity threshold；

Ultrasonic wave confidence level is increased by the by the first update module if the judging result for the first judgment module is yes One numerical value, and the first update is carried out to ultrasonic wave confidence level, if the judging result of the first judgment module is no, ultrasonic wave is set Reliability subtracts second value, and carries out the second update to ultrasonic wave confidence level；

Determining module, for judging whether the first updated first ultrasonic wave confidence level is more than preset first confidence level Threshold value, if so, determining that the dead ship condition on parking stall is to have vehicle, and capture the first image；Judge that second updated the second surpasses Whether sound wave confidence level is less than preset second confidence threshold value, if so, determining that the dead ship condition on parking stall is no vehicle, and grabs Clap the second image.

Further, described device further includes：

Second judgment module judges for obtaining third image when reaching preset time point in the third image With the presence or absence of car plate；

Car plate confidence level is increased third by the second update module if the judging result for the second judgment module is yes Numerical value, and third update is carried out to car plate confidence level and subtracts car plate confidence level if the judging result of the second judgment module is no The 4th numerical value is removed, and the 4th update is carried out to car plate confidence level；

The determining module is additionally operable to judge whether the updated first car plate confidence level of third sets more than preset third Confidence threshold, if so, determining that the dead ship condition on parking stall is to have vehicle；Whether judge the 4th updated second car plate confidence level Less than preset 4th confidence threshold value, if so, determining that the dead ship condition on parking stall is no vehicle.

Further, described device further includes：

Third judgment module, for obtaining the pixel quantity shared by the car plate；Whether judge the pixel quantity More than preset amount threshold；

Second update module, if being more than preset amount threshold specifically for the pixel quantity, to car plate Confidence level carries out third update；If the pixel quantity is not more than preset amount threshold, the is carried out to car plate confidence level Four updates.

Further, described device further includes：

Reminding module, for being less than preset 4th confidence threshold value, the first ultrasonic wave confidence when the second car plate confidence level When degree is more than preset first confidence threshold value, it is the prompt letter that unlicensed vehicle or car plate are blocked to send out the stopped automobile in parking stall Breath；When the first car plate confidence level is more than preset third confidence threshold value, the second ultrasonic wave confidence level is set less than preset second When confidence threshold, the prompt message of ultrasonic sensor failure is sent out.

Further, described device further includes：

The first adjustment module, the frequency and electric current of the ultrasonic wave for adjusting transmitting.

Further, described device further includes：

Second adjustment module, for determining that the dead ship condition on parking stall is after having vehicle, to determining the parking shape on parking stall State is to have the read-around ratio of vehicle to be updated, and judges whether updated first number reaches preset first frequency threshold value, such as Fruit is that the first time interval between two neighboring preset time point is adjusted to preset second time interval；

Second adjustment module is additionally operable to after determining the dead ship condition on parking stall for no vehicle, to determining the parking on parking stall State is updated for the read-around ratio of no vehicle, judges whether updated second number reaches preset second frequency threshold value, If so, the first time interval between two neighboring preset time point is adjusted to preset second time interval；Wherein, Preset first time interval is less than preset second time interval.

Further, described device further includes：

Preserving module, for determining that the dead ship condition on parking stall is to judge that upper one preset time point determined after having vehicle The dead ship condition on parking stall whether be no vehicle, if so, capture the 4th image, and that upper one preset time point was obtained Five images and the 4th image are preserved sequentially in time；

The preserving module after being additionally operable to the dead ship condition on the determining parking stall as no vehicle, judges that upper one is preset Whether the dead ship condition on the parking stall that time point determines is to have vehicle, if so, capture the 6th image, and by upper one preset time The 7th image and the 6th image that point obtains are preserved sequentially in time.

Further, described device further includes：

4th judgment module, for the dead ship condition when the parking stall that judge the determination of upper one preset time point to there is vehicle When, judge whether second ultrasonic intensity is less than preset second intensity threshold, if so, capturing the 8th image, wherein Preset second intensity threshold is less than preset first intensity threshold；Judge to whether there is the first vehicle in the 8th image Board information, if so, judging the second license board information in the 9th image that upper one preset time point obtained and the 8th figure Whether the first license board information as in is consistent, if not, determine that the corresponding automobile of second license board information sails out of parking stall, institute It states the corresponding automobile of the first license board information and drives into parking stall.

Further, described device further includes：

First control module, for judging whether current scene is night scenes, if so, control light compensating lamp is opened, such as Fruit is no, and control light compensating lamp is closed.

Further, described device further includes：

Second control module, for determining that the dead ship condition on parking stall is to send the first control to indicator light after having vehicle Instruction, controls the indicator light and shows the first color；After determining the dead ship condition on parking stall for no vehicle, the is sent to indicator light Two control instructions control the indicator light and show the second color.

An embodiment of the present invention provides a kind of dead ship conditions on parking stall to determine method and device, the method includes：When Emit the first ultrasonic wave when reaching the preset time point, and receives the second ultrasonic wave being reflected back；Judge described the second to surpass Whether the intensity of sound wave is more than preset first intensity threshold；If so, ultrasonic wave confidence level is increased by the first numerical value, and to super Sound wave confidence level carries out the first update, if not, ultrasonic wave confidence level is subtracted second value, and is carried out to ultrasonic wave confidence level Second update；Judge whether the first updated first ultrasonic wave confidence level is more than preset first confidence threshold value, if so, Determine that the dead ship condition on parking stall is to have vehicle, and capture the first image；Judging the second updated second ultrasonic wave confidence level is It is no to be less than preset second confidence threshold value, if so, determining that the dead ship condition on parking stall is no vehicle, and capture the second image. Due in inventive embodiments, when the intensity of the second ultrasonic wave is more than preset first intensity threshold, to ultrasonic wave confidence level The first update is carried out, when the intensity of the second ultrasonic wave is not more than preset first intensity threshold, ultrasonic wave confidence level is carried out Second update determines parking stall when the first updated first ultrasonic wave confidence level is more than preset first confidence threshold value Dead ship condition be have vehicle；When the second updated second ultrasonic wave confidence level is less than preset second confidence threshold value, really The dead ship condition on parking stall is determined for no vehicle, therefore can lead to the distance measured to avoid due to ultrasonic intensity variation in short-term Inaccuracy, and then determine the inaccurate problem of the dead ship condition meeting on parking stall.

Description of the drawings

To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings Attached drawing.

Fig. 1 is a kind of dead ship condition determination process schematic diagram on parking stall that the embodiment of the present invention 1 provides；

Fig. 2 is a kind of electronic equipment schematic view of the mounting position that the embodiment of the present invention 2 provides；

Fig. 3 is a kind of electronic equipment structural schematic diagram that the embodiment of the present invention 9 provides；

Fig. 4 is a kind of dead ship condition determining device structural schematic diagram on parking stall provided in an embodiment of the present invention.

Specific implementation mode

The present invention will be describe below in further detail with reference to the accompanying drawings, it is clear that described embodiment is only this Invention a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist The all other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.

Embodiment 1：

Fig. 1 is a kind of dead ship condition determination process schematic diagram on parking stall provided in an embodiment of the present invention, which includes Following steps：

S101：Emit the first ultrasonic wave when reaching the preset time point, and receives the second ultrasonic wave being reflected back； Judge whether the intensity of second ultrasonic wave is more than preset first intensity threshold.

It is preserved in electronic equipment the preset time point for obtaining image, timer can be installed in electronic equipment, passed through When timer determines arrival preset time point, emit the first ultrasonic wave.Wherein, supersonic sensing is installed in electronic equipment Device, when reaching preset time point, electronic equipment emits the first ultrasonic wave by ultrasonic sensor, and receives and be reflected back Second ultrasonic wave.Due to when there is vehicle compared to no vehicle in parking stall, after the first ultrasonic wave is sent out, just by the short period The second ultrasonic wave can be received, the loss of the first ultrasonic wave is smaller, therefore the second ultrasonic intensity returned is larger.Therefore, electronics is set The standby determination that parking stall parking state can be carried out according to the intensity of the second ultrasonic wave.In embodiments of the present invention, electronic equipment In when preserving preset first intensity threshold and receiving the second ultrasonic wave being reflected back, judge the second ultrasonic wave intensity whether More than preset first intensity threshold.Wherein, preset first intensity threshold can be 120 decibels, 150 decibels etc..

S102：If the intensity of the second ultrasonic wave is more than preset first intensity threshold, ultrasonic wave confidence level is increased by the One numerical value, and the first update is carried out to ultrasonic wave confidence level, if the intensity of the second ultrasonic wave is not more than preset first intensity Ultrasonic wave confidence level is subtracted second value, and carries out the second update to ultrasonic wave confidence level by threshold value.

Electronic equipment is when the intensity for judging the second ultrasonic wave is more than preset first intensity threshold, by ultrasonic wave confidence level Increase by the first numerical value, and the first update is carried out to current ultrasonic confidence level.Electronic equipment is in the intensity for judging the second ultrasonic wave When no more than preset amount threshold, ultrasonic wave confidence level is subtracted into second value, and the is carried out to current ultrasonic confidence level Two updates.Wherein, the first numerical value and second value can be the same or different, preferably, can be by the first numerical value and second Numerical value is both configured to 1.

In addition, continuous multiple time spans can be arranged in electronic equipment, ultrasonic wave is set in each time span Reliability is updated, and when reaching next time span, ultrasonic wave confidence level is reset.

S103：Judge whether the first updated first ultrasonic wave confidence level is more than preset first confidence threshold value, such as Fruit is to determine that the dead ship condition on parking stall is to have vehicle, and capture the first image；Judge the second updated second ultrasonic wave confidence Whether degree is less than preset second confidence threshold value, if so, determining that the dead ship condition on parking stall is no vehicle, and captures the second figure Picture.

Preset first confidence threshold value is preserved in electronic equipment, and the first update is being carried out to current ultrasonic confidence level Afterwards, judge whether the first updated first ultrasonic wave confidence level is more than preset first confidence threshold value, if so, determination stops The dead ship condition of parking stall is to have vehicle.Preset second confidence threshold value is preserved in electronic equipment, to current ultrasonic confidence After degree carries out the second update, judge whether the second updated second ultrasonic wave confidence level is less than preset second confidence level threshold Value, if so, determining that the dead ship condition on parking stall is no vehicle.

Wherein, preset first confidence threshold value is more than preset second confidence threshold value.Preset first confidence level threshold Value could be provided as 10,15 etc., and preset second confidence threshold value could be provided as -5, -8 etc..

In addition, electronic equipment can capture the first image, determine parking when the dead ship condition for determining parking stall is to have vehicle Position dead ship condition be no vehicle when, candid photograph the second image.When user needs to check parking stall parking state, can directly transfer The image of candid photograph provides accurate guarantee for user to the management on parking stall.Improve user experience.

Due in inventive embodiments, when the intensity of the second ultrasonic wave received is more than preset first intensity threshold When, the first update is carried out to ultrasonic wave confidence level, it is right when the intensity of the second ultrasonic wave is not more than preset first intensity threshold Ultrasonic wave confidence level carries out the second update, when the first updated first ultrasonic wave confidence level is more than preset first confidence level threshold When value, determine that the dead ship condition on parking stall is to have vehicle；When the second updated second ultrasonic wave confidence level is less than preset second When confidence threshold value, the dead ship condition on parking stall is determined as no vehicle, therefore can be changed to avoid due to ultrasonic intensity in short-term, When having barrier in short-term in causing the distance measured inaccurate or parking stall, cause to judge by accident, and then determines the parking on parking stall The inaccurate problem of state meeting.

Embodiment 2：

In order to make to determine that the dead ship condition on parking stall is more acurrate, on the basis of the above embodiments, in the embodiment of the present invention In, the method further includes：

In embodiments of the present invention, electronic equipment there are one installing is corresponded to for each parking stall to be detected.The electronics The position of equipment installation is corresponding with car plate position when having vehicle in parking stall to be detected, that is, and the electronic equipment is mounted on, when When having vehicle in parking stall to be detected, the position of the license plate image of vehicle can be obtained.Wherein, it drives into and stops in order to not influence vehicle Parking stall is sailed out of in parking stall, which can be mounted on the upper left corner, the upper right on parking stall to be detected according to actual scene Angle, the lower left corner or the lower right corner.

Fig. 2 is electronic equipment schematic view of the mounting position, as shown in Fig. 2, electronic equipment is mounted on the upper left corner on parking stall.

When reaching preset time point, electronic equipment obtains third image, and improves car plate in identification third image The priority of algorithm judges to whether there is car plate in third image.Specifically, can judge by the methods of characteristic matching It whether there is car plate in three images.Wherein, judge that the process in third image with the presence or absence of car plate belongs to the prior art, herein not The process is repeated again.

Car plate confidence level, there are when car plate, is being increased third value, and to current by electronic equipment in judging third image Car plate confidence level carries out third update.Preset third confidence threshold value is preserved in electronic equipment, to current car plate confidence After degree carries out third update, judge whether the updated first car plate confidence level of third is more than preset third confidence threshold value, If so, determining that the dead ship condition on parking stall is to have vehicle.

Car plate confidence level is subtracted the 4th numerical value, and to working as by electronic equipment when car plate is not present in judging third image Preceding car plate confidence level carries out the 4th update.Preset 4th confidence threshold value is preserved in electronic equipment, is set to current car plate After reliability carries out the 4th update, judge whether the 4th updated second car plate confidence level is less than preset 4th confidence level threshold Value, if so, determining that the dead ship condition on parking stall is no vehicle.

Wherein, third value and the 4th numerical value can be the same or different, preferably, can be by the first numerical value and second Numerical value is both configured to 1.Preset third confidence threshold value and preset first confidence level can be the same or different, preset 4th confidence threshold value and preset second confidence level can be the same or different.Preset 4th confidence threshold value is less than pre- If third confidence threshold value, preset third confidence threshold value could be provided as 12,15 etc., preset 4th confidence threshold value It could be provided as -8, -10 etc..

Likewise, continuous multiple time spans can be arranged in electronic equipment, car plate is set in each time span Reliability is updated, and when reaching next time span, car plate confidence level is reset.

In embodiments of the present invention, the dead ship condition on the determining parking stall includes for no vehicle：

It is no due in embodiments of the present invention, there are when car plate in third image, car plate confidence level being increased third value Then, car plate confidence level is subtracted into the 4th numerical value, and car plate confidence level is updated, when the updated first car plate confidence of third When degree is more than preset third confidence threshold value, determine that the dead ship condition on parking stall is to have vehicle, when the 4th updated second vehicle When board confidence level is less than preset four confidence threshold value, determine the dead ship condition on parking stall for no vehicle.Therefore can make really The dead ship condition for determining parking stall is more acurrate, in addition, when ultrasonic sensor breaks down, still can determine parking stall Dead ship condition avoids limitation existing for the dead ship condition for determining parking stall in the prior art.

Embodiment 3：

The influence of the dead ship condition to be stopped in order to avoid adjacent stalls to determining parking stall, in the various embodiments described above On the basis of, in embodiments of the present invention, before being updated to car plate confidence level, the method further includes：

Electronic equipment in judging third image there are car plate after, obtain car plate pixel shared in third image Quantity.Preset amount threshold is preserved in electronic equipment, obtains the quantity of car plate pixel shared in third image Afterwards, judge whether the quantity of the pixel shared by car plate is more than preset amount threshold.When the determination result is yes, car plate is set Reliability carries out third update, when the judgment result is No, the 4th update is carried out to car plate confidence level.Wherein, preset quantity threshold Value can be 1000,1500 etc..

Due to the number of the pixel shared by the car plate in the parking stall corresponding compared to electronic equipment of the car plate in adjacent parking stall Amount is few.And in embodiments of the present invention, when the pixel quantity shared by the car plate is more than preset amount threshold, just car plate is set Reliability carries out third update.Therefore can to avoid using the vehicle in adjacent parking stall as the vehicle in the corresponding parking stall of electronic equipment, into One step to determine that the dead ship condition on parking stall is more acurrate.

Embodiment 4：

In order to improve user experience, on the basis of the various embodiments described above, in embodiments of the present invention, the method is also wrapped It includes：

When electronic equipment judges that the second car plate confidence level is less than preset four confidence threshold value, illustrate to judge based on image Parking stall is without vehicle, and at this time if it is determined that the first ultrasonic wave confidence level is more than preset first confidence threshold value, then explanation is based on super Sound wave judges that there is vehicle on parking stall.And it is that parking stall is stopped and to be hidden without car plate or car plate the reason of such case occur It keeps off, in this way, judging that there is vehicle on parking stall based on ultrasonic wave, and judges parking stall without vehicle based on image.Therefore, electronic equipment is sent out The stopped automobile in parking stall is the prompt message that unlicensed vehicle or car plate are blocked.

In addition, when electronic equipment judges that the first car plate confidence level is more than preset third confidence threshold value, illustrate based on figure As judging that there is vehicle on parking stall, at this time if it is determined that the second ultrasonic wave confidence level is less than preset second confidence threshold value, then illustrate Judge parking stall without vehicle based on ultrasonic wave.And it is that the ultrasonic sensor in electronic equipment occurs the reason of such case occur Failure causes the intensity of the first ultrasonic wave of transmitting relatively low, in this way, judging parking stall without vehicle based on ultrasonic wave, and is based on image Judge that there is vehicle on parking stall.Therefore, electronic equipment sends out the prompt message of ultrasonic sensor failure.

In addition, due in scene humidity and temperature can all influence the intensity of ultrasonic wave, electronic equipment sends out ultrasound After the prompt message that wave sensor breaks down, the method further includes：

The frequency of ultrasonic wave and the process of electric current of specific adjustment transmitting be some value by set of frequency, successively time The current range for going through ultrasonic wave support obtains the intensity of multiple ultrasonic waves, and determines corresponding electricity when the maximum intensity of ultrasonic wave Stream, keeps the electric current constant, traverses the frequency range that ultrasonic wave is supported successively, obtains the intensity of multiple ultrasonic waves, and determines super Corresponding frequency when the maximum intensity of sound wave, thus obtained electric current and frequency are the electric current and frequency after adjusting.

When reaching the time point of next transmitting ultrasonic wave, according to the first ultrasonic wave of frequency and current emission after adjustment, And when judging that there is vehicle on parking stall based on third image, judge whether the intensity of the second ultrasonic wave received is more than preset the One intensity threshold, if it is, ultrasonic sensor need not be replaced, according to after adjustment frequency and current emission ultrasonic wave be It can.And if the intensity of the second ultrasonic wave received still be not more than preset first intensity threshold, at this time if need replacing Ultrasonic sensor.

In embodiments of the present invention, the prompt message that electronic equipment is sent out can be voice messaging, text information etc..

Due in embodiments of the present invention, when the second car plate confidence level is less than preset 4th confidence threshold value, the first surpass When sound wave confidence level is more than preset first confidence threshold value, it is that unlicensed vehicle or car plate are blocked to send out the stopped automobile in parking stall Prompt message, when the first car plate confidence level is more than preset third confidence threshold value, the second ultrasonic wave confidence level is less than default The second confidence threshold value when, send out the prompt message of ultrasonic sensor failure, therefore user experience can be improved.

Embodiment 5：

It is in embodiments of the present invention, described true on the basis of the various embodiments described above in order to reduce the power consumption of electronic equipment The dead ship condition for determining parking stall is after having vehicle, and the method further includes：

If the dead ship condition on parking stall is to have vehicle always, or is always no vehicle, then first need not be continually obtained Image carries out the determination of dead ship condition, therefore can reduce the time interval for obtaining the first image, and power consumption is reduced to reach Effect.

Specifically, after electronic equipment has vehicle in the dead ship condition for determining parking stall, to determining the parking shape on parking stall State is to have the read-around ratio of vehicle to be updated.Preset first frequency threshold value is preserved in electronic equipment, when updated first When number reaches preset first frequency threshold value, illustrate that there is a vehicle on parking stall for a long time, therefore can be when will be two neighboring preset Between put between first time interval be adjusted to preset second time interval.Wherein, preset first frequency threshold value can be 30 times, 40 is inferior.

Electronic equipment is after the dead ship condition for determining parking stall is no vehicle, to determining that the dead ship condition on parking stall is no vehicle Read-around ratio be updated.Preset second frequency threshold value is preserved in electronic equipment, when updated second number reaches When preset second frequency threshold value, illustrate parking stall for a long time without vehicle, therefore can will be between two neighboring preset time point First time interval be adjusted to preset second time interval.Wherein, preset first frequency threshold value and preset second Number threshold value can be identical or different.

It is illustrated below by a specific example.

For example, preset first frequency threshold value is 30 times, the first time interval between two neighboring preset time point It is 2 seconds.After the dead ship condition for determining parking stall is to have vehicle, to determining that the dead ship condition on parking stall is the read-around ratio for having vehicle It is updated, when updated first number is 30, then by the first time interval tune between two neighboring preset time point Whole is preset second time interval, wherein preset second time interval can be 10 seconds, 15 seconds etc..It needs to illustrate It is, if last time determines that the dead ship condition on parking stall is to have vehicle, currently still to determine that the dead ship condition on parking stall is to have vehicle, then by the Number plus 1；If last time determines that the dead ship condition on parking stall is to have vehicle, current to determine that the dead ship condition on parking stall is no vehicle, Then then first number will be reset, second number is 1.

Due in embodiments of the present invention, when updated first number reaches preset first frequency threshold value, or ought be more Second number after new reaches preset second frequency threshold value, that is, has vehicle or for a long time without vehicle when judging parking stall for a long time When, the first time interval between two neighboring preset time point is adjusted to preset second time interval, and preset First time interval be less than preset second time interval.Therefore the frequency that electronic equipment processing image can be reduced, reduces Power consumption.

Embodiment 6：

In order to determine parking stall by there is state of the vehicle to no vehicle, or by no vehicle to the state for having vehicle, user experience is improved, On the basis of the various embodiments described above, in embodiments of the present invention, the dead ship condition on the determining parking stall is after having vehicle, described Method further includes：

Electronic equipment is determining that the dead ship condition on the parking stall of upper one preset time point determination is no vehicle, current point in time Determine that the dead ship condition on parking stall is then currently to capture the 4th image when having vehicle, there is the information of vehicle, such as vehicle in the 4th image Color, license plate number etc., and the 5th image that upper one preset time point was obtained and the 4th image are sequentially in time It is preserved, forms parking stall by no vehicle to the process for having vehicle.

Electronic equipment is determining that the dead ship condition on the parking stall of upper one preset time point determination is to have vehicle, current point in time Determine the dead ship condition on parking stall for no vehicle when, then currently capture the 6th image, and upper one preset time point obtained the Seven images and the 6th image are preserved sequentially in time, form parking stall by no vehicle to the process for having vehicle.In 6th image There are information of vehicle, such as the color of vehicle, license plate number etc..

It, can be direct when user needs to check parking stall from there is vehicle to no vehicle, or when without vehicle to the procedural image for having vehicle The image preserved sequentially in time is transferred, accurate guarantee is provided to the management on parking stall for user.Improve user's body It tests.

Embodiment 7：

In order to guarantee to detect that vehicle sails out of parking stall, another vehicle inputs the state of parking stall quickly, above-mentioned each On the basis of embodiment, in embodiments of the present invention, after the second ultrasonic wave that the reception is reflected back, the method is also wrapped It includes：

When vehicle is sailed out of from parking stall, the intensity for the second ultrasonic wave that electronic equipment receives can be weaker, therefore, electronics Preset second intensity threshold is preserved in equipment, when the dead ship condition on the parking stall that upper one preset time point of judgement determines is When having vehicle, judge whether the second ultrasonic intensity is less than preset second intensity threshold, if so, determining that vehicle sails out of, wherein Preset second intensity threshold is less than preset first intensity threshold, and preset second intensity threshold can be 50 decibels, 60 points Shellfish etc..

When judging that vehicle sails out of, the 8th image is captured, and there are when the first license board information in judging the 8th image, Identified the second license board information in the first license board information in the 8th image and the 9th image that a upper preset time point obtains, Judge whether the first license board information is consistent with the second license board information, if it is inconsistent, determining the corresponding vapour of the second license board information Vehicle sails out of parking stall, and the corresponding automobile of the first license board information drives into parking stall.License board information can be license plate number information.

In addition, electronic equipment can also preserve the 8th image and the 9th image sequentially in time, when user needs When checking, the image of preservation is transferred.

Due in embodiments of the present invention, when detecting that vehicle sails out of, and it is upper once preset time point obtain the Image determines that a vehicle sails out of parking stall, another vehicle when inconsistent with license board information in the 8th image that currently obtains Drive into parking stall.

Embodiment 8：

In order to keep the picture quality of acquisition more preferable, on the basis of the various embodiments described above, in embodiments of the present invention, capture Before first image or the second image, the method further includes：

Electronic equipment may determine that current scene is scene or night scenes on daytime, and light filling is equipped in electronic equipment Lamp, after judging that current scene is night scenes, control light compensating lamp is opened so that the first image of candid photograph or the second image matter Amount is more preferable, and when judging that current scene is scene on daytime, control light compensating lamp is closed, and the power consumption of electronic equipment is reduced.

Wherein, electronic equipment judge current scene be daytime scene or the processes of night scenes belong to the prior art, No longer the process is repeated herein.

Embodiment 9：

It is in embodiments of the present invention, described true on the basis of the various embodiments described above in order to further increase user experience The dead ship condition for determining parking stall is after having vehicle, and the method further includes：

Indicator light is installed, indicator light shows corresponding color according to the control instruction received in electronic equipment.Work as electricity Sub- equipment determines that the dead ship condition on parking stall is the first control instruction to be sent to indicator light, in the first control instruction after having vehicle The first colouring information is carried, after indicator light receives the first control instruction, shows the first color.When electronic equipment determines parking stall Dead ship condition for no vehicle after, send the second control instruction to indicator light, carry the second colouring information in the second control instruction, After indicator light receives the second control instruction, the second color is shown.First color can be red, and the second color can be green Color.

Fig. 3 is a kind of electronic equipment structural schematic diagram provided in an embodiment of the present invention, as shown in figure 3, electronic equipment includes Camera lens, indicator light, light compensating lamp, ultrasonic sensor, camera lens are used to emit ultrasonic wave for capturing image, ultrasonic sensor, Additionally include delustring screw thread, device housings and bottom bracket.

Fig. 4 is a kind of dead ship condition determining device structural schematic diagram on parking stall provided in an embodiment of the present invention, the device Including：

First judgment module 41 for emitting the first ultrasonic wave when reaching the preset time point, and receives reflection The second ultrasonic wave returned；Judge whether the intensity of second ultrasonic wave is more than preset first intensity threshold；

First update module 42 increases ultrasonic wave confidence level if the judging result for the first judgment module 41 is yes Add the first numerical value, and the first update is carried out to ultrasonic wave confidence level, if the judging result of the first judgment module 41 is no, will surpass Sound wave confidence level subtracts second value, and carries out the second update to ultrasonic wave confidence level；

Determining module 43, for judging whether the first updated first ultrasonic wave confidence level is more than preset first confidence Threshold value is spent, if so, determining that the dead ship condition on parking stall is to have vehicle, and capture the first image；Judge second updated second Whether ultrasonic wave confidence level is less than preset second confidence threshold value, if so, determine that the dead ship condition on parking stall is no vehicle, and Capture the second image.

Described device further includes：

Second judgment module 44 judges the third image for obtaining third image when reaching preset time point In whether there is car plate；

Second update module 45 increases car plate confidence level if the judging result for the second judgment module 44 is yes Third value, and third update is carried out to car plate confidence level and sets car plate if the judging result of the second judgment module 44 is no Reliability subtracts the 4th numerical value, and carries out the 4th update to car plate confidence level；

The determining module 43 is additionally operable to judge whether the updated first car plate confidence level of third is more than preset third Confidence threshold value, if so, determining that the dead ship condition on parking stall is to have vehicle；Judging the 4th updated second car plate confidence level is It is no to be less than preset 4th confidence threshold value, if so, determining that the dead ship condition on parking stall is no vehicle.

Described device further includes：

Third judgment module 46, for obtaining the pixel quantity shared by the car plate；Judging the pixel quantity is It is no to be more than preset amount threshold；

Second update module 45, if being more than preset amount threshold specifically for the pixel quantity, to vehicle Board confidence level carries out third update；If the pixel quantity is not more than preset amount threshold, car plate confidence level is carried out 4th update.

Described device further includes：

Reminding module 47, for being less than preset 4th confidence threshold value when the second car plate confidence level, the first ultrasonic wave is set When reliability is more than preset first confidence threshold value, it is the prompt that unlicensed vehicle or car plate are blocked to send out the stopped automobile in parking stall Information；When the first car plate confidence level is more than preset third confidence threshold value, the second ultrasonic wave confidence level is less than preset second When confidence threshold value, the prompt message of ultrasonic sensor failure is sent out.

Described device further includes：

The first adjustment module 48, the frequency and electric current of the ultrasonic wave for adjusting transmitting.

Described device further includes：

Second adjustment module 49, for determining that the dead ship condition on parking stall is after having vehicle, to determining the parking on parking stall State is to have the read-around ratio of vehicle to be updated, and judges whether updated first number reaches preset first frequency threshold value, If so, the first time interval between two neighboring preset time point is adjusted to preset second time interval；

Second adjustment module 49 is additionally operable to after determining the dead ship condition on parking stall for no vehicle, to determining that parking stall is stopped Car state is updated for the read-around ratio of no vehicle, judges whether updated second number reaches preset second number threshold Value, if so, the first time interval between two neighboring preset time point is adjusted to preset second time interval；Its In, preset first time interval is less than preset second time interval.

Described device further includes：

Preserving module 410, for determining that the dead ship condition on parking stall is to judge that a upper preset time point was true after having vehicle Whether the dead ship condition on fixed parking stall is no vehicle, if so, the 4th image is captured, and upper one preset time point was obtained 5th image and the 4th image are preserved sequentially in time；

The preserving module 410 after being additionally operable to the dead ship condition on the determining parking stall as no vehicle, judges that upper one presets Time point determine parking stall dead ship condition whether be have vehicle, if so, capture the 6th image, and by upper one it is preset when Between put the 7th image of acquisition and the 6th image is preserved sequentially in time.

Described device further includes：

4th judgment module 411, for the dead ship condition when the parking stall that judge the determination of upper one preset time point to have Che Shi, judges whether second ultrasonic intensity is less than preset second intensity threshold, if so, the 8th image is captured, In, preset second intensity threshold is less than preset first intensity threshold；Judge in the 8th image with the presence or absence of the One license board information, if so, the second license board information in judging the 9th image of upper preset time point acquisition and described the Whether the first license board information in eight images is consistent, if not, determining that the corresponding automobile of second license board information sails out of parking Position, the corresponding automobile of first license board information drive into parking stall.

Described device further includes：

First control module 412, for judging whether current scene is night scenes, if so, control light compensating lamp is opened, If not, control light compensating lamp is closed.

Described device further includes：

Second control module 413, for determining that the dead ship condition on parking stall is to send the first control to indicator light after having vehicle System instruction, controls the indicator light and shows the first color；After determining the dead ship condition on parking stall for no vehicle, sent to indicator light Second control instruction controls the indicator light and shows the second color.

The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.

These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims

1. a kind of dead ship condition on parking stall determines method, which is characterized in that the method includes：

Emit the first ultrasonic wave when reaching the preset time point, and receives the second ultrasonic wave being reflected back；Described in judgement Whether the intensity of the second ultrasonic wave is more than preset first intensity threshold；

If so, ultrasonic wave confidence level is increased by the first numerical value, and the first update is carried out to ultrasonic wave confidence level, if not, will Ultrasonic wave confidence level subtracts second value, and carries out the second update to ultrasonic wave confidence level；

Judge whether the first updated first ultrasonic wave confidence level is more than preset first confidence threshold value, if so, determining The dead ship condition on parking stall is to have vehicle, and capture the first image；Judge whether the second updated second ultrasonic wave confidence level is small In preset second confidence threshold value, if so, determining that the dead ship condition on parking stall is no vehicle, and the second image is captured.

2. the method as described in claim 1, which is characterized in that the method further includes：

If so, car plate confidence level is increased third value, and third update is carried out to car plate confidence level, if not, by car plate Confidence level subtracts the 4th numerical value, and carries out the 4th update to car plate confidence level；

Judge whether the updated first car plate confidence level of third is more than preset third confidence threshold value, if so, determination stops The dead ship condition of parking stall is to have vehicle；Judge whether the 4th updated second car plate confidence level is less than preset 4th confidence level threshold Value, if so, determining that the dead ship condition on parking stall is no vehicle.

3. method as claimed in claim 2, which is characterized in that the dead ship condition on the determining parking stall includes for no vehicle：

If the second car plate confidence level is less than preset 4th confidence threshold value, and the second ultrasonic wave confidence level is less than preset Second confidence threshold value determines the dead ship condition on parking stall for no vehicle.

4. method as claimed in claim 2, which is characterized in that before being updated to car plate confidence level, the method is also wrapped It includes：

Obtain the pixel quantity shared by the car plate；Judge whether the pixel quantity is more than preset amount threshold；

5. method as claimed in claim 2, which is characterized in that the method further includes：

When the second car plate confidence level is less than preset 4th confidence threshold value, the first ultrasonic wave confidence level is set more than preset first When confidence threshold, it is the prompt message that unlicensed vehicle or car plate are blocked to send out the stopped automobile in parking stall；

When the first car plate confidence level is more than preset third confidence threshold value, the second ultrasonic wave confidence level is set less than preset second When confidence threshold, the prompt message of ultrasonic sensor failure is sent out.

6. method as claimed in claim 5, which is characterized in that the prompt message for sending out ultrasonic sensor failure Later, the method further includes：

7. the method as described in claim 1, which is characterized in that the dead ship condition on the determining parking stall is institute after having vehicle The method of stating further includes：

To determining that the dead ship condition on parking stall is to have the read-around ratio of vehicle to be updated, judge whether updated first number reaches To preset first frequency threshold value, if so, the first time interval between two neighboring preset time point is adjusted to pre- If the second time interval；

To determining that the dead ship condition on parking stall is updated for the read-around ratio of no vehicle, judge whether updated second number reaches To preset second frequency threshold value, if so, the first time interval between two neighboring preset time point is adjusted to pre- If the second time interval；Wherein, preset first time interval is less than preset second time interval.

8. the method as described in claim 1, which is characterized in that the dead ship condition on the determining parking stall is institute after having vehicle The method of stating further includes：

Judge whether the dead ship condition on the parking stall that upper one preset time point determined is no vehicle, if so, the 4th image is captured, And the 5th image of upper one preset time point acquisition and the 4th image are preserved sequentially in time；

Judged whether the dead ship condition on the parking stall that upper preset time point determines is to have vehicle, if so, the 6th image of candid photograph, And the 7th image of upper one preset time point acquisition and the 6th image are preserved sequentially in time.

9. the method as described in claim 1, which is characterized in that after the second ultrasonic wave that the reception is reflected back, the side Method further includes：

When judging the dead ship condition on parking stall of upper one preset time point determination to there is vehicle, judge that second ultrasonic wave is strong Whether degree is less than preset second intensity threshold, if so, capturing the 8th image, wherein preset second intensity threshold Less than preset first intensity threshold；

Judge to whether there is the first license board information in the 8th image, if so, judging what upper one preset time point obtained Whether the second license board information in the 9th image and the first license board information in the 8th image are consistent, if not, determining institute It states the corresponding automobile of the second license board information and sails out of parking stall, the corresponding automobile of first license board information drives into parking stall.

10. the method as described in claim 1, which is characterized in that before capturing the first image or the second image, the method is also Including：

Judge whether current scene is night scenes, if so, control light compensating lamp is opened, if not, control light compensating lamp is closed.

11. the method as described in claim 1, which is characterized in that the dead ship condition on the determining parking stall is institute after having vehicle The method of stating further includes：

12. a kind of dead ship condition determining device on parking stall, which is characterized in that described device includes：

First judgment module for emitting the first ultrasonic wave when reaching the preset time point, and receives the be reflected back Two ultrasonic waves；Judge whether the intensity of second ultrasonic wave is more than preset first intensity threshold；

Ultrasonic wave confidence level is increased by the first number by the first update module if the judging result for the first judgment module is yes Value, and the first update is carried out to ultrasonic wave confidence level, if the judging result of the first judgment module is no, by ultrasonic wave confidence level Second value is subtracted, and the second update is carried out to ultrasonic wave confidence level；

Determining module, for judging whether the first updated first ultrasonic wave confidence level is more than preset first confidence level threshold Value, if so, determining that the dead ship condition on parking stall is to have vehicle, and capture the first image；Judge the second updated second ultrasound Whether wave confidence level is less than preset second confidence threshold value, if so, determining that the dead ship condition on parking stall is no vehicle, and captures Second image.

13. device as claimed in claim 12, which is characterized in that described device further includes：

Second judgment module, for the acquisition third image when reaching preset time point, judge in the third image whether There are car plates；

Car plate confidence level is increased third value by the second update module if the judging result for the second judgment module is yes, And third update is carried out to car plate confidence level, if the judging result of the second judgment module is no, car plate confidence level is subtracted the Four numerical value, and the 4th update is carried out to car plate confidence level；

The determining module is additionally operable to judge whether the updated first car plate confidence level of third is more than preset third confidence level Threshold value, if so, determining that the dead ship condition on parking stall is to have vehicle；Judge whether the 4th updated second car plate confidence level is less than Preset 4th confidence threshold value, if so, determining that the dead ship condition on parking stall is no vehicle.

14. device as claimed in claim 13, which is characterized in that described device further includes：

Third judgment module, for obtaining the pixel quantity shared by the car plate；Judge whether the pixel quantity is more than Preset amount threshold；

Second update module, if being more than preset amount threshold specifically for the pixel quantity, to car plate confidence Degree carries out third update；If the pixel quantity is not more than preset amount threshold, the 4th is carried out more to car plate confidence level Newly.

15. device as claimed in claim 13, which is characterized in that described device further includes：

Reminding module, for being less than preset 4th confidence threshold value when the second car plate confidence level, the first ultrasonic wave confidence level is big When preset first confidence threshold value, it is the prompt message that unlicensed vehicle or car plate are blocked to send out the stopped automobile in parking stall；When First car plate confidence level is more than preset third confidence threshold value, and the second ultrasonic wave confidence level is less than preset second confidence level threshold When value, the prompt message of ultrasonic sensor failure is sent out.

16. device as claimed in claim 14, which is characterized in that described device further includes：

17. device as claimed in claim 12, which is characterized in that described device further includes：

Second adjustment module, for determining that the dead ship condition on parking stall is after having vehicle, the dead ship condition to determining parking stall is There is the read-around ratio of vehicle to be updated, judges whether updated first number reaches preset first frequency threshold value, if so, First time interval between two neighboring preset time point is adjusted to preset second time interval；

Second adjustment module is additionally operable to after determining the dead ship condition on parking stall for no vehicle, to determining the dead ship condition on parking stall Read-around ratio for no vehicle is updated, and judges whether updated second number reaches preset second frequency threshold value, if It is that the first time interval between two neighboring preset time point is adjusted to preset second time interval；Wherein, it presets First time interval be less than preset second time interval.

18. device as claimed in claim 12, which is characterized in that described device further includes：

Preserving module, for determining that the dead ship condition on parking stall is to judge stopping for upper one preset time point determination after having vehicle Whether the dead ship condition of parking stall is no vehicle, if so, the 5th figure captured the 4th image, and upper one preset time point was obtained Picture and the 4th image are preserved sequentially in time；

The preserving module after being additionally operable to the dead ship condition on the determining parking stall as no vehicle, judged the upper preset time Whether the dead ship condition on the determining parking stall of point is to have vehicle, if so, capturing the 6th image, and upper one preset time point is obtained The 7th image and the 6th image taken is preserved sequentially in time.

19. device as claimed in claim 12, which is characterized in that described device further includes：

4th judgment module, for when judging the dead ship condition on parking stall of upper one preset time point determination to there is vehicle, sentencing Whether second ultrasonic intensity that breaks is less than preset second intensity threshold, if so, capturing the 8th image, wherein described Preset second intensity threshold is less than preset first intensity threshold；Judge to believe with the presence or absence of the first car plate in the 8th image Breath, if so, judging in the second license board information and the 8th image in the 9th image that upper one preset time point obtained The first license board information it is whether consistent, if not, determine that the corresponding automobile of second license board information sails out of parking stall, described the The corresponding automobile of one license board information drives into parking stall.

20. device as claimed in claim 12, which is characterized in that described device further includes：

First control module, for judging whether current scene is night scenes, if so, control light compensating lamp is opened, if not, Light compensating lamp is controlled to close.

21. device as claimed in claim 12, which is characterized in that described device further includes：

Second control module, for determining that the dead ship condition on parking stall is to send the first control instruction to indicator light after having vehicle, It controls the indicator light and shows the first color；After determining the dead ship condition on parking stall for no vehicle, the second control is sent to indicator light System instruction, controls the indicator light and shows the second color.