CN111982372A - Method for detecting vehicle missing object, vehicle-mounted device and computer storage medium - Google Patents
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Abstract
The application is suitable for the technical field of article detection, and provides a vehicle left article detection method, vehicle-mounted equipment and a computer storage medium, wherein the vehicle left article detection method is applied to the vehicle-mounted equipment, a camera and a pressure sensor are arranged in a vehicle, and the method comprises the following steps: acquiring the opening action of the vehicle door; judging whether the passengers get off the vehicle or not according to the pressure mutation detected by the pressure sensor; if the passenger gets off the train, calling the pressure sensor to obtain a target pressure value; comparing the target pressure value with a reference pressure value, wherein the reference pressure value is a pressure value in the vehicle idle state; and determining the detection result of the articles left on the vehicle according to the comparison result. The embodiment of the application can timely and accurately realize automatic detection of the articles left by the vehicle.
Description
Technical Field
The application belongs to the technical field of article detection, and particularly relates to a vehicle left article detection method, vehicle-mounted equipment and a computer storage medium.
Background
At present, more and more people choose to take taxi, windward vehicle, shared automobile and other vehicles as a travel mode. Generally, a passenger places an item carried by the passenger in a vehicle while riding the vehicle. However, when a passenger gets off the vehicle, the passenger often leaves the article on the vehicle due to his or her carelessness, which causes great inconvenience to the passenger himself or the driver.
Disclosure of Invention
In view of this, embodiments of the present application provide a method for detecting a vehicle missing object, a vehicle-mounted device, and a computer storage medium, so as to solve the problem of how to timely implement automatic detection of a vehicle missing object in the prior art.
The first aspect of the embodiment of the application provides a method for detecting a vehicle missing object, which is applied to vehicle-mounted equipment, wherein a camera and a pressure sensor are arranged in a vehicle, and the method comprises the following steps:
acquiring the opening action of the vehicle door;
judging whether the passengers get off the vehicle or not according to the pressure mutation detected by the pressure sensor;
if the passenger gets off the train, calling the pressure sensor to obtain a target pressure value;
comparing the target pressure value with a reference pressure value, wherein the reference pressure value is a pressure value in the vehicle idle state;
and determining the detection result of the articles left on the vehicle according to the comparison result.
Optionally, the determining whether the passenger gets off the vehicle according to the sudden pressure change detected by the pressure sensor specifically includes:
acquiring the opening time of the opening action of the vehicle door;
detecting a front pressure value before the opening time and a rear pressure value after the opening time by using the pressure sensor;
comparing the relationship between the front pressure value and the rear pressure value;
and if the comparison result shows that the front pressure value is larger than the rear pressure value and the difference value between the front pressure value and the rear pressure value exceeds a first preset range, judging that the passenger gets off the vehicle.
Optionally, the determining a detection result of the missing object of the vehicle according to the comparison result specifically includes:
judging whether the difference value between the target pressure value and the reference pressure value exceeds a second preset range or not;
if the number of the articles in the automobile exceeds the preset value, determining that the articles in the automobile are left.
Optionally, the determining a detection result of the missing object of the vehicle according to the comparison result specifically includes:
if the difference value between the target pressure value and the reference pressure value does not exceed a second preset range, calling the camera to shoot a target picture;
comparing the target photo with a reference photo, wherein the reference photo is a photo in the state that the vehicle is vacant;
and if the result of comparing the target photo and the reference photo is that a difference image exists, determining that articles are left in the automobile.
Optionally, the determining a detection result of the missing object of the vehicle according to the comparison result specifically includes:
and if the result of comparing the target photo and the reference photo shows that no difference image exists, determining that articles are not left in the automobile.
Optionally, after the determining the result of detecting the missing object of the vehicle according to the comparison result, the method further includes:
and if the detection result of the fallen articles indicates that no articles are left in the automobile, determining the target pressure value as a new reference pressure value, and determining the target photo as a new reference photo.
Optionally, after the determining the result of detecting the missing object of the vehicle according to the comparison result, the method further includes:
when the detection result of the fallen articles is that the fallen articles are left in the automobile, positioning the target position where the fallen articles exist according to the position, determined by the pressure sensor, of the change of the pressure value;
and sending out article drop prompt information according to the target position, wherein the article drop prompt information comprises information indicating the target position of the dropped article.
A second aspect of the embodiments of the present application provides an onboard apparatus, the onboard apparatus is in communication connection with a camera and a pressure sensor built in a vehicle, and the apparatus includes:
the vehicle door detection unit is used for acquiring the opening action of a vehicle door;
the passenger getting-off judging unit is used for judging whether the passengers get off the vehicle according to the pressure sudden change detected by the pressure sensor;
the target pressure value obtaining unit is used for calling the pressure sensor to obtain a target pressure value if the passenger gets off the vehicle;
the pressure value comparison unit is used for comparing the target pressure value with a reference pressure value, and the reference pressure value is a pressure value in a vehicle idle state;
and the result determining unit is used for determining the detection result of the fallen objects of the vehicle according to the comparison result.
Optionally, the passenger getting-off determination unit is specifically configured to obtain an opening time of a door opening action; detecting a front pressure value before the opening time and a rear pressure value after the opening time by using the pressure sensor; comparing the relationship between the front pressure value and the rear pressure value; and if the comparison result shows that the front pressure value is larger than the rear pressure value and the difference value between the front pressure value and the rear pressure value exceeds a first preset range, judging that the passenger gets off the vehicle.
Optionally, the result determining unit is specifically configured to determine whether a difference between the target pressure value and the reference pressure value exceeds a second preset range; if the number of the articles in the automobile exceeds the preset value, determining that the articles in the automobile are left.
Optionally, the result determining unit is specifically configured to invoke the camera to take a target picture if it is determined that the difference between the target pressure value and the reference pressure value does not exceed a second preset range; comparing the target photo with a reference photo, wherein the reference photo is a photo in the state that the vehicle is vacant; and if the result of comparing the target photo and the reference photo is that a difference image exists, determining that articles are left in the automobile.
Optionally, the result determining unit is further configured to determine that no article is left in the vehicle if the result of comparing the target photograph and the reference photograph is that no difference image exists.
Optionally, the vehicle-mounted device further includes:
and the updating unit is used for determining the target pressure value as a new reference pressure value and determining the target picture as a new reference picture if the detection result of the lost article indicates that no article is left in the automobile.
Optionally, the vehicle-mounted device further includes a positioning unit and a prompting unit:
the positioning unit is used for positioning the target position of the left article according to the position, determined by the pressure sensor, of the pressure value change when the detection result of the left article is that the left article is in the automobile;
and the prompting unit is used for sending out the prompt information of the article missing according to the target position, and the prompt information of the article missing comprises the information indicating the target position of the missing article.
A third aspect of the embodiments of the present application provides an in-vehicle apparatus, including a memory, a processor, and a computer program stored in the memory and executable on the processor, which when executed by the processor, causes the in-vehicle apparatus to implement the steps of the vehicle left article detection method.
A fourth aspect of embodiments of the present application provides a computer storage medium storing a computer program that, when executed by a processor, causes an in-vehicle apparatus to implement the steps of the method for detecting a vehicle missing object as described.
A fifth aspect of embodiments of the present application provides a computer program product, which, when running on an in-vehicle apparatus, causes the in-vehicle apparatus to execute the method for detecting a vehicle missing object of any one of the above first aspects.
Compared with the prior art, the embodiment of the application has the advantages that: in the embodiment of the application, whether the passenger gets off the vehicle or not can be accurately judged in time according to the opening action of the vehicle door and the pressure mutation detected by the pressure sensor arranged in the vehicle, and the current target pressure value can be timely obtained through the pressure sensor after the passenger gets off the vehicle, and the target pressure value is compared with the reference pressure value under the empty state of the vehicle, so that the detection result of the left falling object of the vehicle can be accurately determined, the pressure value change condition inside the vehicle after the passenger gets off the vehicle can be timely and accurately reflected through the pressure sensor arranged in the vehicle, whether the left falling object exists inside the vehicle or not can be timely and accurately determined, and the automatic detection of the left falling object of the vehicle is realized.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic view of an application scenario of a method for detecting a vehicle missing object according to an embodiment of the present application;
fig. 2 is a schematic flow chart illustrating an implementation of a method for detecting a vehicle missing object according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an in-vehicle device provided in an embodiment of the present application;
FIG. 4 is a schematic diagram of another vehicle-mounted device provided in the embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
In order to explain the technical solution described in the present application, the following description will be given by way of specific examples.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
In addition, in the description of the present application, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
At present, when a passenger rides on a vehicle, the passenger often places an item carried by the passenger in the riding vehicle. Although the driver can remind the passenger to take his personal belongings with him when the passenger gets off the vehicle, the situation that the passenger has lost his belongings on the vehicle still happens occasionally, so that the passenger can not retrieve the belongings easily, and the driver can not find the owner of the belongings easily, thereby bringing great inconvenience to the passenger and the driver. In order to solve the technical problem, embodiments of the present application provide a method for detecting a vehicle missing object, a vehicle-mounted device, and a computer storage medium, in which whether a passenger gets off a vehicle can be timely and accurately determined according to an opening motion of a vehicle door and a sudden pressure change detected by a pressure sensor built in the vehicle, and after it is determined that the passenger gets off the vehicle, a current target pressure value can be timely obtained by the pressure sensor, and the target pressure value is compared with a reference pressure value in a vehicle vacant state to accurately determine a detection result of the vehicle missing object, so that a pressure value change condition inside the vehicle after the passenger gets off the vehicle can be timely and accurately reflected by the pressure sensor built in the vehicle, thereby timely and accurately determining whether the vehicle missing object exists inside the vehicle, and implementing automatic detection of the vehicle missing object.
Fig. 1 shows an application scenario of the vehicle missing object detection method implemented by the present application, which includes a vehicle 11 and a vehicle missing object detection device 12 disposed on the vehicle. The vehicle missing object detection device 12 at least includes a Micro Controller Unit (MCU) and a pressure sensor. Specifically, the number of the pressure sensors is one or more, and the pressure sensors are at least arranged in seats in the vehicle, for example, arranged on a cushion and/or a foot pad corresponding to one or more seats of the vehicle; further, the pressure sensor may be disposed in other positions such as a trunk and a rack of the vehicle. Optionally, the vehicle fallen object detecting device 12 further includes a camera. In particular, the camera may be located at the top of the vehicle interior and/or in the trunk of the vehicle. Optionally, the vehicle left article detecting device 12 may further include a storage unit, such as a Secure Digital Card (SD Card), and a door opening/closing detecting unit for detecting opening and/or closing of a door. When the vehicle is in an empty state, that is, when the vehicle only has a specific facility, the pressure value measured by the pressure sensor of the vehicle left article detection device 12 at this time is transmitted to the MCU and stored as a reference pressure value, and a picture of the inside of the vehicle taken by the camera of the vehicle left article detection device 12 at this time may be transmitted to the MCU and stored as a reference picture. Then, after a passenger gets on the vehicle, if the opening action of the vehicle door is acquired and the passenger gets off the vehicle is judged according to the pressure mutation detected by the pressure sensor, the pressure value measured by the pressure sensor after the passenger gets off the vehicle is taken as a target pressure value and is transmitted to the MCU, and an image in the vehicle, which is obtained by shooting through the camera at the moment, can be taken as a target picture and is transmitted to the MCU; the MCU compares the reference pressure value with the target pressure value, can further compare the reference image with the target image, and finally determines the detection result of the vehicle's fallen objects according to the comparison result.
The first embodiment is as follows:
fig. 2 shows a schematic flow chart of a method for detecting a vehicle missing object provided in an embodiment of the present application, where an execution main body of the method for detecting a vehicle missing object is an on-board device provided on a vehicle, and details are as follows:
in S201, the opening operation of the door is acquired.
Therefore, the opening action of the vehicle door is used as a trigger condition for judging whether the passenger gets off the vehicle. Specifically, when a passenger opens the door, the door detection switch detects the opening motion of the door and sends a signal to notify the vehicle-mounted device, so that the vehicle-mounted device acquires the opening motion of the door. Optionally, the vehicle in the embodiment of the present application may be a passenger vehicle or a commercial vehicle. Among them, the passenger car is an automobile mainly used for carrying passengers and their carry-on luggage or temporary articles in terms of its design and technical characteristics, and the vehicles generally having no more than 9 seats including the driver seat, such as a net appointment car, a taxi, a shared car, etc.; the commercial vehicle is an automobile for transporting people and goods in terms of design and technical characteristics, and specifically may be a passenger car with more than 9 seats, such as a bus, a coach and the like. Alternatively, if the vehicle in the embodiment of the present application is specifically a commercial vehicle, such as a bus, having an entry door dedicated for passengers to enter the vehicle and a exit door dedicated for passengers to exit the vehicle, in step S201, the opening action of the exit door is specifically obtained.
In S202, it is determined whether the passenger gets off the vehicle based on the sudden change in pressure detected by the pressure sensor.
In the embodiment of the application, the pressure sensor is at least arranged at least one seat position of the vehicle, and specifically can be arranged at a seat cushion, a foot pad and other positions corresponding to the vehicle seat. Further, the pressure sensor in the embodiment of the present application is a high-precision pressure sensor, that is, a pressure sensor with a measurement error smaller than a preset error range.
When the pressure sensor arranged at the seat position of the vehicle detects that the pressure changes suddenly, namely a large pressure value change occurs in a short time, the situation that passengers get off the vehicle possibly exists in the current vehicle is indicated. Optionally, if the pressure value suddenly changes from the pressure detected by the pressure sensor to a sudden pressure value increase, judging that the current situation is that the passenger gets on the vehicle; and if the pressure detected by the pressure sensor is suddenly reduced to the pressure value, judging that the situation that the passenger gets off the vehicle currently is present.
Specifically, the step S202 includes:
s20201: acquiring the opening time of the opening action of the vehicle door;
s20202: detecting a front pressure value before the opening time and a rear pressure value after the opening time by using the pressure sensor;
s20203: comparing the relationship between the front pressure value and the rear pressure value;
s20204: and if the comparison result shows that the front pressure value is larger than the rear pressure value and the difference value between the front pressure value and the rear pressure value exceeds a first preset range, judging that the passenger gets off the vehicle.
In S20201, the in-vehicle apparatus acquires the time when the door opening operation occurs, i.e., the opening time.
In S20202, the pressure sensor in the embodiment of the present application records the pressure value detected in the last period of time in real time or in a buffer at intervals. After the opening time is obtained in step S20201, a pressure value recorded at a time immediately before the opening time is obtained as a front pressure value, and a pressure value recorded at a time immediately after the opening time is obtained as a rear pressure value, from the pressure values recorded in the buffer. Further, subtracting the first reserved time from the opening time of the opening action of the vehicle door to obtain a first moment, and taking a pressure value recorded at the first moment as a front pressure value; the first reserved time is a time reserved in consideration of the possibility that the passenger bends away from the seat before opening the door. Further, adding a second reserved time to the opening time of the opening action of the vehicle door to obtain a second moment, and taking a pressure value recorded at the second moment as a rear pressure value; the second reserved time is a time reserved in consideration of the passenger getting up to get out of the seat after opening the door. Through the first reserved time and the second reserved time, the front pressure value and the rear pressure value can be determined more accurately, and therefore the judgment of getting-off of passengers can be carried out more accurately.
In S20203, the acquired front pressure value and rear pressure value are compared to determine a magnitude relationship therebetween.
In S20204, when the comparison result of comparing the front pressure value and the rear pressure value is that the front pressure value is greater than the rear pressure value, and the difference between the front pressure value and the rear pressure value exceeds a first preset range, it indicates that a sudden pressure decrease occurs in the vehicle, and it is determined that the passenger gets off the vehicle at this time.
In the embodiment of the application, the front pressure value before the opening time and the rear pressure value after the opening time can be accurately obtained according to the opening time of the opening action of the vehicle, and the comparison is carried out to determine whether the sudden pressure reduction occurs at present, so that the judgment of getting off the vehicle by the passenger can be accurately carried out.
In S203, if it is determined that the passenger gets off the vehicle, the pressure sensor is called to acquire a target pressure value.
If the passenger gets off the vehicle as a result of the determination in step S202, the pressure sensor is called to measure the pressure value of the specific position inside the vehicle at that time, and the target pressure value is obtained. The pressure sensor is provided at least at a designated seat position or positions, and optionally, at a trunk position of the vehicle. After the passenger gets off the vehicle, the sum of the pressure values measured by the pressure sensors arranged at one or more specific positions is determined as the target pressure value of the interior of the vehicle at the moment.
In S204, the target pressure value is compared with a reference pressure value, where the reference pressure value is a pressure value in the vehicle idle state.
The reference pressure value of the embodiment of the application is the pressure value of the specific position in the vehicle, which is measured when the vehicle is in the idle state. Specifically, if the vehicle is a vehicle such as a taxi, or a network car with a driver for carrying passengers, the vehicle is in an empty state in which the vehicle has only a facility and the driver and no passenger gets on the vehicle. Specifically, if the vehicle is a shared vehicle or a rental vehicle to be driven by the user, the vehicle is in an empty state, that is, the vehicle has only a facility inherent therein, and there is no driver or passenger. The inherent facilities of the vehicle are all items originally placed in the vehicle, such as seat cushions, foot pads, back cushions, and the like. Optionally, the reference pressure value is a pressure value measured by the pressure sensor in a vehicle empty state and stored in a storage unit of the vehicle-mounted device.
Specifically, in step S204, a reference pressure value is obtained from the storage unit of the vehicle-mounted device, and the reference pressure value is compared with the target pressure value obtained in step S203, so as to obtain a corresponding comparison result.
In S205, a result of detecting the missing object of the vehicle is determined according to the comparison result.
The comparison result obtained by comparing the target pressure value and the reference pressure value in step S204 may include two cases, that is, the target pressure value is equal to the reference pressure value, and the target pressure value is greater than the reference pressure value. When the comparison result shows that the target pressure value is greater than the reference pressure value, it indicates that the current state of the vehicle does not return to the idle state of the vehicle after the passenger gets off the vehicle, and an extra pressure value caused by the pressure applied to the pressure sensor by other objects except the intrinsic facility of the vehicle still exists on the vehicle, and the extra pressure value may be a pressure value caused by a missing object forgotten on the vehicle by the passenger. At this time, the detection result of the fallen objects of the vehicle can be directly determined according to the magnitude of the extra pressure value; or determining the detection result of the fallen objects of the vehicle according to the magnitude of the extra pressure value and the information of the picture shot by the camera arranged in the vehicle.
Optionally, step S205 includes:
judging whether the difference value between the target pressure value and the reference pressure value exceeds a second preset range or not;
if the number of the articles in the automobile exceeds the preset value, determining that the articles in the automobile are left.
In the embodiment of the application, if the comparison result between the current target pressure value and the reference pressure value is that the target pressure value is greater than the reference pressure value, and the difference between the target pressure value and the reference pressure value exceeds the second preset range, it is indicated that a larger additional pressure value still exists in the state of the current vehicle compared with the idle state of the vehicle. At this time, the difference value exceeding the second preset range is an extra pressure value brought by the left articles forgotten on the vehicle by the passenger, and the existence of the left articles in the vehicle at this time is determined, namely the detection result of the left articles of the vehicle at this time is determined to be the left articles in the vehicle.
In the embodiment of the application, the difference value between the target pressure value and the reference pressure value is compared with the second preset range, and only when the difference value exceeds the second preset range, the left article detection result of the vehicle at the moment is directly determined to be that left articles exist in the vehicle, so that the phenomenon that the left articles in the vehicle are mistakenly judged due to the change of the slight pressure value caused by the measurement error can be avoided, and the accuracy of detecting the left articles of the vehicle is improved.
Optionally, step S205 includes:
if the difference value between the target pressure value and the reference pressure value does not exceed a second preset range, calling the camera to shoot a target picture;
comparing the target photo with a reference photo, wherein the reference photo is a photo in the state that the vehicle is vacant;
and if the result of comparing the target photo and the reference photo is that a difference image exists, determining that articles are left in the automobile.
In the embodiment of the application, the reference picture is a picture obtained by shooting the internal environment of the vehicle in a vehicle vacant state. Specifically, when the vehicle is in a vehicle empty state in which passengers are not yet on board, the internal environment of the vehicle is photographed by a camera built in the vehicle, and the reference picture is obtained and buffered in a storage unit of the in-vehicle device.
When the difference value between the target pressure value and the reference pressure value is judged not to exceed the second preset range, it is indicated that the pressure value in the vehicle is not changed greatly at the moment, and the smaller pressure value change may be caused by a measurement error or a missing object in the vehicle. Therefore, at this time, the internal environment of the vehicle needs to be further photographed by a camera built in the vehicle to obtain a target photograph, so as to further determine the detection result of the missing object of the vehicle.
After the target picture is shot, a pre-stored reference picture is obtained from a storage unit of the vehicle-mounted equipment, and the target picture is compared with the reference picture.
If the result obtained by comparing the target photo and the reference photo is that a difference image exists between the two photos, for example, the target photo and the reference photo have color block difference and/or line difference, the difference image is caused by the left articles existing in the vehicle, and the detection result of the left articles of the vehicle at the moment is determined to be the left articles in the vehicle.
In the embodiment of the application, because under the condition that the difference value between the target pressure value and the reference pressure value is not large, the final detection result of the vehicle missing object can be determined by further combining the comparison result of the target photo and the reference photo, and therefore the accuracy of the detection of the vehicle missing object can be further improved.
Optionally, step S205 further includes:
and if the result of comparing the target photo and the reference photo shows that no difference image exists, determining that articles are not left in the automobile.
When the comparison result of the target photo and the reference photo indicates that no difference image exists, namely the target photo and the reference photo are basically consistent, the internal environment of the vehicle is restored to an initial vehicle vacant state after the passenger gets off the vehicle, namely the passenger missing article does not exist in the vehicle, and at the moment, the missing article detection result of the vehicle is determined to be the article which is not left in the vehicle.
In the embodiment of the application, the condition that the target photo and the reference photo have no difference image is further given, and the condition that no object is left in the vehicle is directly judged at the moment, so that the detection result of the object left in the corresponding vehicle is accurately determined completely and accurately by comparing the results of the target photo and the reference photo.
Optionally, after the step S205, the method further includes:
and if the detection result of the fallen articles indicates that no articles are left in the automobile, determining the target pressure value as a new reference pressure value, and determining the target photo as a new reference photo.
The accuracy of the pressure value measured by the pressure sensor and the basic picture conditions (such as brightness and contrast) of the picture shot by the camera all have certain changes with the lapse of time or the change of the vehicle environment; if the time measured by the reference pressure value or the shooting time of the reference image is too far away from the current detection time of the vehicle missing article, the reference pressure value and the reference image may not be accurately used as the reference, and the final detection result of the vehicle missing article may be inaccurate. In the embodiment of the application, when the detection result of the left article of the vehicle is that the article is not left on the vehicle, the target pressure value at the moment is stored as a new reference pressure value, and the target image at the moment is stored as a new reference image, namely, when the article is detected to be not left on the vehicle, the reference pressure value is timely updated to the current latest measured pressure value (current target pressure value), and the reference image is updated to the latest shot image (current target image) inside the vehicle, so that the reference pressure value and the reference image are timely updated, errors caused by time lapse are reduced, and the accuracy of the detection of the left article of the vehicle is improved.
Optionally, after the step S205, the method further includes:
when the detection result of the fallen articles is that the fallen articles are left in the automobile, positioning the target position where the fallen articles exist according to the position, determined by the pressure sensor, of the change of the pressure value;
and sending out article drop prompt information according to the target position, wherein the article drop prompt information comprises information indicating the target position of the dropped article.
When the detection result of the left article is that the left article is left in the vehicle, the target position of the left article can be located according to the position where the pressure value change is determined by the pressure sensors, specifically, the number of the pressure sensors in the embodiment of the application is multiple, and when the pressure value change in the multiple pressure sensors exceeds the target pressure sensor with the preset difference value, the position where the target pressure sensor is located is determined to be the target position of the left article. Alternatively, if the target position of the fallen article cannot be accurately determined by the pressure sensor, the image area with image difference between the two images is determined from the reference image and the target image, and the actual physical position corresponding to the image area with image difference is determined as the target position with the fallen article.
After the target position of the left article in the vehicle is determined, the prompt message of article left is sent according to the target position, the prompt message of article left comprises the information indicating the target position of the left article, and the passenger and the driver are reminded of the existence of the left article in the current vehicle, so that the passenger can find and take away the left article in time directly according to the prompt message or indirectly through the driver. Optionally, the prompt message of the article left is sent out by any one or more of voice playing through a playing device on the vehicle, character or image information displaying through an electronic display screen on the vehicle, and lighting or flashing of an indicator lamp on the vehicle. Optionally, in this embodiment of the application, if the passenger gets on the vehicle through the preset mobile phone application software (for example, through taxi taking software or fare payment software), the prompt message of the article left may be sent to the mobile phone of the passenger in the form of a message notification through the preset mobile phone application software. Optionally, an indicator light is disposed on each seat or each article placement position on the vehicle, where an article can be placed, and then a light-up action or a preset flashing action may be performed to send out a prompt message that the article is left.
In the embodiment of the application, because when there is the article left for the vehicle at the article detection result of the vehicle that falls, can be according to the position that the pressure value change exists that pressure sensor confirms, the target location that there is the article left in the location to send the prompt message who contains the information of this target location, consequently can in time accurately remind passenger's target location to have the article left, thereby make the passenger conveniently in time discover and take away the article left that falls.
For example, a specific application scenario in which the vehicle is specifically a taxi is illustrated below:
the taxi is characterized in that a pressure sensor is arranged on seats, such as a passenger seat of a passenger cab, a rear seat and the like, of the taxi, which can be possibly seated on the taxi, and a camera is further arranged inside the taxi. When no passenger gets on the taxi, the vehicle-mounted equipment measures a pressure value in a vehicle idle state through the pressure sensor and stores the pressure value as a reference pressure value; then, a photograph of the vehicle in an empty state is taken by a camera as a reference photograph. When the door of the passenger to be seated is pulled away from the door outer handle in the vehicle empty state, and a sudden increase in the pressure value of the pressure sensor is detected within one minute after the door opening operation, for example, an increase in the pressure value of 1 kpa or more within one minute, the present case is described where the passenger gets on the vehicle. When the opening operation of the door is detected after the passenger gets on the vehicle, for example, when the passenger pulls the door away from the inner handle of the door near the front passenger seat or the rear seat, the pressure sensor detects whether the pressure value suddenly decreases within one minute after the opening time of the opening operation of the door, for example, if the pressure value decreases by more than 1 kpa within one minute, the current situation that the passenger gets off the vehicle is described, and the pressure value measured by the pressure sensor at this time is taken as the target pressure value. And then, comparing the target pressure value with a reference pressure value measured in advance, and if the difference between the target pressure value and the reference pressure value is large (for example, the target pressure value is higher than the reference pressure value by more than 20 Pa), indicating that the articles left by the passenger exist in the taxi at the moment. Further, if the difference between the target pressure value and the reference pressure value is not large, for example, within 20 pa, a camera is used for acquiring a picture of the interior of the taxi to obtain a target picture, and the target picture is compared with a reference picture shot in advance; if there is a significant color block difference between the target photo and the reference photo, for example, a red color block that does not appear in the reference photo appears in a certain region of the target photo, it indicates that there is an article left by the passenger in the taxi at this time. After determining that the articles left by the passenger exist in the rented car, the passenger or the driver just getting off the car can be reminded through voice broadcast so that the passenger can take away the articles left in time
For example, a specific application scenario in which the vehicle is specifically a bus is illustrated below:
on the bus, except for a driver seat, other seats are provided with pressure sensors. When no passenger gets on the bus, the vehicle-mounted equipment measures the pressure value of each pressure sensor in the empty state of the bus as the reference pressure value corresponding to each pressure sensor and stores the reference pressure value; then, a photograph of the vehicle in an empty state is taken by a camera as a reference photograph. When the opening action of a get-off door (such as a back door of a bus) of the bus is acquired, and pressure sudden changes exist in pressure sensors on one or more seats (hereinafter referred to as target seats), for example, the pressure value on the target seat is detected to be reduced by more than 1 kilopascal within one minute, it is determined that a corresponding target passenger on the target seat gets off the bus. And then measuring a corresponding target pressure value on the target seat through a pressure sensor on the target seat, comparing the target pressure value on the target seat with a reference pressure value measured in advance on the target seat, and if the target pressure value on the target seat is higher than the reference pressure value by more than 20 Pa, indicating that articles left by the target passenger exist on the target seat. Further, if the difference value between the target pressure value corresponding to the target seat and the reference pressure value is within 20 Pa, acquiring a picture of the interior of the bus through a camera at the moment to obtain a target picture, and comparing the target picture with the reference picture shot in advance; if the target photo and the reference photo have obvious color block difference on the picture area corresponding to the target seat, the situation that the object left by the target passenger exists on the target seat at the moment is indicated. After the situation that the object passenger loses the fallen objects on the object seat on the bus is determined, the object passenger or the driver can be reminded through voice broadcast, so that the object passenger can take away the fallen objects in time. Furthermore, each seat on the bus is respectively provided with an independent indicator light and/or a buzzer, when the missing article exists on the target seat, the indicator light on the target seat is long and bright or flickers, and the buzzer sounds, so that the target passenger can arrive at the target seat more quickly and accurately according to the indicator light and/or the buzzer and take away the missing article.
It should be understood that the above application scenarios are only examples and are not limiting, and the vehicle according to the embodiment of the present application may also be a network appointment vehicle, a shared vehicle, a bus, or other more types of vehicles.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Example two:
fig. 3 is a schematic structural diagram of an on-board device provided in an embodiment of the present application, where the on-board device is in communication connection with a camera and a pressure sensor built in a vehicle, and for convenience of description, only a part related to the embodiment of the present application is shown:
the vehicle-mounted device includes: a door detection unit 31, a passenger alighting determination unit 32, a target pressure value acquisition unit 33, a pressure value comparison unit 34, and a result determination unit 35. Wherein:
and a door detection unit 31 for acquiring an opening operation of the door.
And the passenger getting-off judging unit 32 is used for judging whether the passengers get off the vehicle according to the pressure sudden change detected by the pressure sensor.
And a target pressure value obtaining unit 33, configured to invoke the pressure sensor to obtain a target pressure value if it is determined that the passenger gets off the vehicle.
And a pressure value comparison unit 34, configured to compare the target pressure value with a reference pressure value, where the reference pressure value is a pressure value in the vehicle idle state.
And the result determining unit 35 is configured to determine a detection result of the missing object of the vehicle according to the comparison result.
Optionally, the passenger getting-off determination unit 32 is specifically configured to obtain an opening time of a door opening action; detecting a front pressure value before the opening time and a rear pressure value after the opening time by using the pressure sensor; comparing the relationship between the front pressure value and the rear pressure value; and if the comparison result shows that the front pressure value is larger than the rear pressure value and the difference value between the front pressure value and the rear pressure value exceeds a first preset range, judging that the passenger gets off the vehicle.
Optionally, the result determining unit 35 is specifically configured to determine whether a difference between the target pressure value and the reference pressure value exceeds a second preset range; if the number of the articles in the automobile exceeds the preset value, determining that the articles in the automobile are left.
Optionally, the result determining unit 35 is specifically configured to invoke the camera to take a target picture if it is determined that the difference between the target pressure value and the reference pressure value does not exceed a second preset range; comparing the target photo with a reference photo, wherein the reference photo is a photo in the state that the vehicle is vacant; and if the result of comparing the target photo and the reference photo is that a difference image exists, determining that articles are left in the automobile.
Optionally, the result determining unit 35 is further configured to determine that no article is left in the vehicle if the result of comparing the target photograph and the reference photograph is that no difference image exists.
Optionally, the vehicle-mounted device further includes:
and the updating unit is used for determining the target pressure value as a new reference pressure value and determining the target picture as a new reference picture if the detection result of the lost article indicates that no article is left in the automobile.
Optionally, the vehicle-mounted device further includes a positioning unit and a prompting unit:
the positioning unit is used for positioning the target position of the left article according to the position, determined by the pressure sensor, of the pressure value change when the detection result of the left article is that the left article is in the automobile;
and the prompting unit is used for sending out the prompt information of the article missing according to the target position, and the prompt information of the article missing comprises the information indicating the target position of the missing article.
It should be noted that, for the information interaction, execution process, and other contents between the above-mentioned devices/units, the specific functions and technical effects thereof are based on the same concept as those of the embodiment of the method of the present application, and specific reference may be made to the part of the embodiment of the method, which is not described herein again.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Example three:
FIG. 4 is a schematic diagram of an in-vehicle device provided in an embodiment of the present application. As shown in fig. 4, the in-vehicle apparatus 4 of the embodiment includes: a processor 40, a memory 41 and a computer program 42, such as a vehicle missing article detection program, stored in said memory 41 and operable on said processor 40. The processor 40, when executing the computer program 42, implements the steps in the above-mentioned embodiments of the method for detecting the vehicle missing object, such as the steps S201 to S205 shown in fig. 2. Alternatively, the processor 40, when executing the computer program 42, implements the functions of the modules/units in the above-mentioned device embodiments, such as the functions of the units 31 to 35 shown in fig. 3.
Illustratively, the computer program 42 may be partitioned into one or more modules/units that are stored in the memory 41 and executed by the processor 40 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 42 in the in-vehicle apparatus 4. For example, the computer program 42 may be divided into a door detection unit, a passenger alighting determination unit, a target pressure value acquisition unit, a pressure value comparison unit, and a result determination unit, and the specific functions of each unit are as follows:
and the vehicle door detection unit is used for acquiring the opening action of the vehicle door.
And the passenger getting-off judging unit is used for judging whether the passengers get off the vehicle according to the pressure sudden change detected by the pressure sensor.
And the target pressure value acquisition unit is used for calling the pressure sensor to acquire a target pressure value if judging that the passenger gets off the vehicle.
And the pressure value comparison unit is used for comparing the target pressure value with a reference pressure value, and the reference pressure value is the pressure value of the vehicle in the idle state.
And the result determining unit is used for determining the detection result of the fallen objects of the vehicle according to the comparison result.
The vehicle-mounted device 4 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The vehicle-mounted device may include, but is not limited to, a processor 40, a memory 41. Those skilled in the art will appreciate that fig. 4 is merely an example of the in-vehicle device 4, and does not constitute a limitation of the in-vehicle device 4, and may include more or less components than those shown, or combine some components, or different components, for example, the in-vehicle device may further include an input-output device, a network access device, a bus, etc.
The Processor 40 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may be an internal storage unit of the in-vehicle apparatus 4, such as a hard disk or a memory of the in-vehicle apparatus 4. The memory 41 may also be an external storage device of the in-vehicle device 4, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like provided on the in-vehicle device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the in-vehicle device 4. The memory 41 is used to store the computer program and other programs and data required by the in-vehicle apparatus. The memory 41 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/vehicle-mounted device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/vehicle-mounted device are merely illustrative, and for example, the division of the modules or units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A method for detecting objects left on a vehicle is characterized by being applied to vehicle-mounted equipment, wherein a camera and a pressure sensor are arranged in the vehicle, and the method comprises the following steps:
acquiring the opening action of the vehicle door;
judging whether the passengers get off the vehicle or not according to the pressure mutation detected by the pressure sensor;
if the passenger gets off the train, calling the pressure sensor to obtain a target pressure value;
comparing the target pressure value with a reference pressure value, wherein the reference pressure value is a pressure value in the vehicle idle state;
and determining the detection result of the articles left on the vehicle according to the comparison result.
2. The method according to claim 1, wherein the determining whether the passenger gets off the vehicle according to the sudden change of the pressure detected by the pressure sensor includes:
acquiring the opening time of the opening action of the vehicle door;
detecting a front pressure value before the opening time and a rear pressure value after the opening time by using the pressure sensor;
comparing the relationship between the front pressure value and the rear pressure value;
and if the comparison result shows that the front pressure value is larger than the rear pressure value and the difference value between the front pressure value and the rear pressure value exceeds a first preset range, judging that the passenger gets off the vehicle.
3. The method according to claim 1, wherein the determining the result of detecting the missing object of the vehicle according to the comparison result specifically comprises:
judging whether the difference value between the target pressure value and the reference pressure value exceeds a second preset range or not;
if the number of the articles in the automobile exceeds the preset value, determining that the articles in the automobile are left.
4. The method according to claim 3, wherein the determining the result of detecting the missing object of the vehicle according to the comparison result specifically comprises:
if the difference value between the target pressure value and the reference pressure value does not exceed a second preset range, calling the camera to shoot a target picture;
comparing the target photo with a reference photo, wherein the reference photo is a photo in the state that the vehicle is vacant;
and if the result of comparing the target photo and the reference photo is that a difference image exists, determining that articles are left in the automobile.
5. The method according to claim 4, wherein the determining the result of detecting the missing object of the vehicle according to the comparison result specifically comprises:
and if the result of comparing the target photo and the reference photo shows that no difference image exists, determining that articles are not left in the automobile.
6. The method of claim 5, wherein after the determining the missing object detection result of the vehicle according to the comparison result, the method further comprises:
and if the detection result of the fallen articles indicates that no articles are left in the automobile, determining the target pressure value as a new reference pressure value, and determining the target photo as a new reference photo.
7. The method according to any one of claims 1-6, wherein after determining the result of the detection of the missing object of the vehicle according to the comparison result, the method further comprises:
when the detection result of the fallen articles is that the fallen articles are left in the automobile, positioning the target position where the fallen articles exist according to the position, determined by the pressure sensor, of the change of the pressure value;
and sending out article drop prompt information according to the target position, wherein the article drop prompt information comprises information indicating the target position of the dropped article.
8. An in-vehicle apparatus that is communicatively connected with a camera and a pressure sensor built in a vehicle, the apparatus comprising:
the vehicle door detection unit is used for acquiring the opening action of a vehicle door;
the passenger getting-off judging unit is used for judging whether the passengers get off the vehicle according to the pressure sudden change detected by the pressure sensor;
the target pressure value obtaining unit is used for calling the pressure sensor to obtain a target pressure value if the passenger gets off the vehicle;
the pressure value comparison unit is used for comparing the target pressure value with a reference pressure value, and the reference pressure value is a pressure value in a vehicle idle state;
and the result determining unit is used for determining the detection result of the fallen objects of the vehicle according to the comparison result.
9. An in-vehicle apparatus, characterized in that the in-vehicle apparatus is communicatively connected with a camera inside a vehicle and a pressure sensor built into the vehicle, the apparatus comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the computer program, when executed by the processor, causes the in-vehicle apparatus to carry out the steps of the method according to any one of claims 1 to 7.
10. A computer storage medium, in which a computer program is stored which, when being executed by a processor, causes an in-vehicle device to carry out the steps of the method according to any one of claims 1 to 7.
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