CN114999176A - Intelligent parking sensing method, electronic device and computer readable storage medium - Google Patents
Intelligent parking sensing method, electronic device and computer readable storage medium Download PDFInfo
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
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- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/02—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points taking into account a variable factor such as distance or time, e.g. for passenger transport, parking systems or car rental systems
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
A smart parking sensing method, the method comprising: determining the initial parking status of the current parking space; sensing an ambient light source of a current parking space at intervals of a first preset time interval by an ambient light sensor to obtain a light sensing value; judging whether the parking space status of the current parking space is changed according to the initial parking status; when the parking space state changes, the infrared sensor is utilized to confirm whether the parking space state change is true or not again; and if the parking space status is changed to true, changing the parking space status of the current parking space. The invention also provides an electronic device and a computer readable storage medium, wherein the main detection adopts an ambient light sensor, the passive reception of external light source is used for detection, the power consumption is low, the battery is used, no external power is needed, the electronic device can be used in environments with poor light source, and the infrared sensor is used for repeated detection, so the identification degree is high.
Description
Technical Field
The present invention relates to identification methods, and more particularly, to an intelligent parking sensing method, an electronic device and a computer readable storage medium.
Background
Intelligent parking identification is a popular application in Internet of Things (IoT) and smart cities, and many intelligent parking identification technologies, such as magnetic field, ultrasonic wave, radar, optical or camera, etc., have appeared nowadays. The magnetic field type identification technology has good installation flexibility and price competitiveness due to low price and low power consumption. However, since the amount of change of the magnetic field is small, the accuracy of the identification is likely to be problematic, and particularly, the identification is likely to be wrong for a vehicle body with a special structure or material.
Disclosure of Invention
In view of the foregoing, it is desirable to provide an intelligent parking sensing method, an electronic device and a computer-readable storage medium, which can feed back the absolute position of a sound source in real time by using a micro microphone array.
The embodiment of the invention provides an intelligent parking sensing method, which is applied to an electronic device and is characterized by comprising the following steps: determining the initial parking status of the current parking space; sensing an ambient light source of a current parking space at intervals of a first preset time interval through an ambient light sensor to obtain a light sensing value; judging whether the parking space status of the current parking space is changed according to the initial parking status; when the parking space state changes, the infrared sensor is utilized to confirm whether the parking space state change is true or not again; and if the parking space status is changed to true, changing the parking space status of the current parking space.
An embodiment of the present invention further provides an electronic device, including: the device comprises an ambient light sensor, an infrared sensor and a processing module. The ambient light sensor is used for sensing an ambient light source of a current parking space at intervals of a first preset time interval to obtain a light sensing value. The infrared sensor is used for sensing the state of one parking space in the current parking space. The processing module is used for judging an initial parking state of the current parking space, obtaining the light sensing value from the ambient light sensor, judging whether the parking space state of the current parking space is changed according to the initial parking state, confirming whether the parking space state is changed to be true again by using the infrared sensor when the parking space state is changed, and changing the parking space state of the current parking space if the parking space state is changed to be true.
The intelligent parking sensing method, the electronic device and the computer readable storage medium of the embodiment of the invention adopt an optical sensing mode to judge whether a parking space is used. The hardware adopts an ambient light sensor and an infrared sensor, and a software algorithm is matched, so that the ambient light judgment is mainly adopted and the infrared sensor is adopted as an assistant, and the system can be simultaneously suitable for the environments with sufficient and poor light sources.
Drawings
Fig. 1A and 1B are schematic diagrams illustrating an application of the intelligent parking sensing method according to the embodiment of the invention.
Fig. 2 is a flowchart illustrating steps of an intelligent parking sensing method according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a hardware architecture of an electronic device according to an embodiment of the invention.
FIG. 4 is a functional block diagram of an electronic device according to an embodiment of the invention.
Description of the main elements
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The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
It should be noted that the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between the various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The intelligent parking sensing method provided by the embodiment of the invention adopts an optical sensing mode to judge whether the parking space is used. The hardware adopts an ambient light sensor and an infrared sensor, and a software algorithm is matched, and the ambient light judgment is adopted as the main part and the infrared sensor is adopted as the auxiliary part, so that the system is suitable for the environment with sufficient and poor light sources. The intelligent parking sensing device comprises an Ambient Light Sensor (ALS) and an Infrared (IR) Sensor, and is placed in a parking lot compartment and below a parking place of a vehicle body. The long-time sensing is realized by a power-saving ambient light sensor, and the infrared sensor with higher accuracy is used as a retest when the ambient light sensor has a state change or is used for debugging at a fixed time interval. When the infrared sensor senses, if the ambient light sensor is found to have misjudgment (generally occurring in an environment with poor light source), the critical value can be adjusted to correct.
Fig. 1A and 1B are schematic application diagrams of an intelligent parking sensing method according to an embodiment of the present invention.
Referring to fig. 1A, when the parking space is initially empty, the ambient light sensor senses a current ambient light brightness value (referred to as "light sensing value" herein) and uses the current light sensing value as a reference value B1 for the empty parking space. Then, a threshold T1 for occupancy is preset, i.e. when the parking space is occupied, the brightness value of the ambient light sensed by the ambient light sensor should be less than "T1". At this time, the threshold value of the difference in the change in the ambient light (idling occupancy) is the reference value B1 for empty space — threshold value T1 for occupied space.
On the contrary, referring to fig. 1B, when the parking space is occupied, the ambient light sensor senses the current ambient light brightness value, and uses the current light sensing value as the reference value B2 of the parking space occupancy. Then, a threshold T2 for empty space is preset, i.e. when the space is empty, the brightness value of the ambient light sensed by the ambient light sensor should be greater than "T2". At this time, the threshold value T2 for the difference in the change of the ambient light (empty space) is the threshold value T2 for empty space.
The first or second variance difference threshold is the sum or difference of the reference value and the state change threshold, and can be set as an initial (Default) value. When the detection of the ambient light sensor is found to be misjudged, the magnitude of the threshold value is corrected in time, for example, the preset proportion or the preset value is increased or decreased each time when the magnitude is too small or too large. In addition, the reference value B1 for empty space, the reference value B2 for occupied space, the threshold value T1 for occupied space and the threshold value T2 for empty space may also be adjusted according to the actual situation of the parking space, so as to avoid the frequent occurrence of erroneous determination.
Fig. 2 is a flowchart illustrating steps of an intelligent parking sensing method according to an embodiment of the present invention, which is applied to an electronic device. The order of the steps in the flow chart may be changed and some steps may be omitted according to different requirements.
The intelligent parking sensing method of the embodiment of the invention simultaneously uses an ambient light sensor and an Infrared (IR) sensor to perform sensing operation, and is in a standby mode.
And step S11, judging the current parking space state. The current parking space state can be set manually or judged by an infrared sensor. If the parking space is set manually, the initial parking space state is empty.
In step S12, the ambient light sensor senses the ambient light source of the current parking space at intervals of a first preset time interval. In the embodiment of the present invention, the first predetermined time interval is set to be short, for example, 5 seconds.
And step S13, judging whether the parking space state is changed. In this step, it is mainly determined whether the light sensing value sensed by the ambient light sensor is smaller than a threshold T1 for parking space occupancy or larger than a threshold T2 for empty parking space. When the parking space is empty, if the light sensing value sensed by the ambient light sensor is smaller than the critical value T1 of the occupied parking space, it indicates that the parking space is occupied. When the parking space is occupied, if the light sensing value sensed by the ambient light sensor is greater than the critical value T2 that the parking space is empty, the parking space is empty. If the parking space status is not changed, the process returns to step S11, and the ambient light sensor and the infrared sensor both enter a standby state to wait for the next sensing operation.
When the parking space status changes, for example, from empty to occupied or from occupied to empty, step S14 confirms again whether the parking space status change is true (Yes) using the infrared sensor.
In step S15, if the parking space status changes to true (Yes), the parking space status of the current parking space is changed.
Step S16, the parking space sensing parameter of the current parking space is updated according to the currently sensed light sensing value, and then the process returns to step S11, where the ambient light sensor and the infrared sensor both enter a standby state to wait for the next sensing operation. The parking space sensing parameters of the current parking space at least comprise a reference value B1 for updating the empty parking space, a reference value B2 for occupying the parking space, a critical value T1 for occupying the parking space, a critical value T2 for occupying the parking space and a variation difference critical value.
In step S17, if the parking space status changes to false (No), the parking space sensing parameter of the current parking space is updated according to the currently sensed light sensing value. The parking space sensing parameters of the current parking space at least comprise a reference value B1 for updating the empty parking space, a reference value B2 for occupying the parking space, a critical value T1 for occupying the parking space, a critical value T2 for occupying the parking space and a variation difference critical value.
In step S18, the state change threshold is modified by using the correlation algorithm, and then the process returns to step S11, and the ambient light sensor and the infrared sensor both enter a standby state to wait for the next sensing operation.
In step S19, the infrared sensor continues to perform the sensing operation according to a second predetermined time interval (e.g., 30 minutes). At a specific time interval, the infrared sensor is used for detecting errors so as to avoid the situation that the ambient light source sensor judges the errors. In practical applications, the time interval of the automatic error detection can be adjusted according to the charging mechanism of the parking space, for example, the parking lot is charged for 30 minutes, and the automatic error detection can be set to be automatically detected once in 30 minutes.
And step S20, judging whether the parking space state is changed. If the parking space status is not changed, the process returns to step S16, and the parking space sensing parameter of the current parking space is updated according to the currently sensed light sensing value.
In step S21, if the parking space status changes, the parking space status of the current parking space is changed.
FIG. 3 is a diagram illustrating a hardware architecture of a mobile electronic device according to an embodiment of the invention. The electronic device 200, but not limited to, may be communicatively coupled to the processor 210, the memory 220, and the smart parking sensing system 230 via a system bus, and fig. 2 illustrates only the electronic device 200 having the components 210 and 230, but it is understood that not all illustrated components are required and that more or fewer components may be implemented instead.
The memory 220 includes at least one type of readable storage medium including a flash memory, a hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a Read Only Memory (ROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), a Programmable Read Only Memory (PROM), a magnetic memory, a magnetic disk, an optical disk, etc. In some embodiments, the memory 220 may be an internal storage unit of the electronic device 200, such as a hard disk or a memory of the electronic device 200. In other embodiments, the memory may also be an external storage device of the electronic apparatus 200, 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 electronic apparatus 200. Of course, the memory 220 may also include both an internal storage unit and an external storage device of the electronic apparatus 200. In this embodiment, the memory 220 is generally used for storing an operating system and various application software installed in the electronic device 200, such as program codes of the intelligent parking sensing system 230. In addition, the memory 220 may be used to temporarily store various types of data that have been output or are to be output.
The processor 210 may be a Central Processing Unit (CPU), controller, microcontroller, microprocessor, or other data Processing chip in some embodiments. The processor 210 is generally used to control the overall operation of the electronic device 200. In this embodiment, the processor 210 is configured to operate the program codes stored in the memory 220 or process data, for example, operate the intelligent parking sensing system 230.
It should be noted that fig. 2 is only an example of the electronic device 200. In other embodiments, electronic device 200 may include more or fewer components, or have a different configuration of components.
Fig. 3 is a functional block diagram of an electronic device for implementing an intelligent parking sensing method according to an embodiment of the present invention. The intelligent parking sensing method of the embodiment of the invention can be implemented by a computer program stored in a storage medium, for example, the memory 220 of the electronic device 200. When the computer program implementing the method of the present invention is loaded into the memory 220 by the processor 210, the processor 210 of the drive line device 200 executes the intelligent parking sensing method of the embodiment of the present invention.
The electronic device 200 of the embodiment of the invention includes a processing module 310, an ambient light sensor 320 and an infrared sensor 330. The processing module 310 determines the current parking space status. The current parking space state can be set manually or judged by an infrared sensor. If the parking space is set manually, the initial parking space state is empty. The ambient light sensor 320 senses the ambient light source of the current parking space at intervals of the first preset time interval. In the embodiment of the present invention, the first predetermined time interval is set to be short, for example, 5 seconds.
The processing module 310 determines whether the parking space status has changed. In this step, it is mainly determined whether the light sensing value sensed by the ambient light sensor is smaller than a threshold T1 for parking space occupancy or larger than a threshold T2 for empty parking space. When the parking space is empty, if the light sensing value sensed by the ambient light sensor is smaller than the critical value T1 of the occupied parking space, it indicates that the parking space is occupied. When the parking space is occupied, if the light sensing value sensed by the ambient light sensor is greater than the critical value T2 that the parking space is empty, the parking space is empty. If the parking space status is not changed, the ambient light sensor 320 and the infrared sensor 330 both enter a standby status to wait for the next sensing operation.
When the parking space status changes, for example, from empty to occupied or from occupied to empty, the processing module 310 confirms again whether the parking space status change is true (Yes) using the infrared sensor. If the parking space status changes to true (Yes), the processing module 310 changes the parking space status of the current parking space.
The processing module 310 updates the parking space sensing parameter of the current parking space according to the currently sensed light sensing value, and then the ambient light sensor 320 and the infrared sensor 330 both enter the standby state to wait for the next sensing operation. The parking space sensing parameters of the current parking space at least comprise a reference value B1 for updating the empty parking space, a reference value B2 for occupying the parking space, a critical value T1 for occupying the parking space, a critical value T2 for occupying the parking space and a variation difference critical value.
If the parking space status is changed to false (No), the processing module 310 updates the parking space sensing parameter of the current parking space according to the light sensing value sensed currently. The parking space sensing parameters of the current parking space at least comprise a reference value B1 for updating the empty parking space, a reference value B2 for occupying the parking space, a critical value T1 for occupying the parking space, a critical value T2 for occupying the parking space and a variation difference critical value.
The processing module 310 modifies the state change threshold value using a correlation algorithm, and then both the ambient light sensor 320 and the infrared sensor 330 enter a standby state to wait for the next sensing operation.
The infrared ray 330 sensor continuously performs the sensing operation according to the second preset time interval (e.g., 30 minutes). At a specific time interval, the infrared sensor 330 is used for error detection to avoid the situation of error judgment of the ambient light sensor. In practical applications, the time interval of the automatic error detection can be adjusted according to the charging mechanism of the parking space, for example, the parking lot is charged for 30 minutes, and the automatic error detection can be set to be automatically detected once in 30 minutes.
The processing module 310 determines whether the parking space status changes through the infrared sensor 330. If the parking space state is not changed, the parking space sensing parameters of the current parking space are updated according to the light sensing values sensed at present. If the parking space status changes, the processing module 310 changes the parking space status of the current parking space.
The integrated modules/units of the electronic device 200, 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 of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and instructs related hardware to implement the steps of the above-described embodiments of the method 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, random access memory, 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.
It is understood that the above described division of modules is only one logical division, and that in actual implementation, there may be other divisions. In addition, functional modules in the embodiments of the present application may be integrated into the same processing unit, or each module may exist alone physically, or two or more modules are integrated into the same unit. The integrated module can be realized in a hardware form, and can also be realized in a form of hardware and a software functional module.
It is obvious to those skilled in the art that other corresponding changes or modifications can be made according to the technical solutions and technical concepts provided by the embodiments of the present invention and the generated actual needs, and these changes and modifications all belong to the protection scope of the claims of the present invention.
Claims (10)
1. An intelligent parking sensing method applied to an electronic device, the method comprising:
determining the initial parking status of the current parking space;
sensing an ambient light source of a current parking space at intervals of a first preset time interval through an ambient light sensor to obtain a light sensing value;
judging whether the parking space status of the current parking space is changed according to the initial parking status;
when the parking space state changes, the infrared sensor is utilized to confirm whether the parking space state change is true or not again; and
if the parking space status is changed to true, the parking space status of the current parking space is changed.
2. The intelligent parking sensing method of claim 1, further comprising:
in the step of determining whether the parking space status of the current parking space is changed, when the parking space status is initially empty, if the light sensing value sensed by the ambient light sensor is smaller than the threshold T1 for parking space occupancy, it indicates that the current parking space is occupied, and when the parking space status is initially occupied, if the light sensing value sensed by the ambient light sensor is greater than the threshold T2 for parking space empty, it indicates that the current parking space is empty.
3. The intelligent parking sensing method of claim 2, further comprising:
if the parking space state is not changed, the ambient light sensor and the infrared sensor are both in a standby state to wait for the next sensing operation.
4. The smart parking sensing method as recited in claim 2, further comprising:
the space sensing parameters of the current parking space are updated according to the sensed light sensing value, and the space sensing parameters of the current parking space at least include a reference value B1 for updating the space to be empty, a reference value B2 for occupying the space, a threshold value T1 for occupying the space, a threshold value T2 for occupying the space and a variation difference threshold value.
5. The intelligent parking sensing method of claim 2, further comprising:
if the parking space state is changed to be false, updating the parking space sensing parameters of the current parking space according to the light sensing values sensed at present, wherein the parking space sensing parameters at least comprise a reference value B1 for updating that the parking space is empty, a reference value B2 for parking space occupation, a critical value T1 for parking space occupation, a critical value T2 for parking space occupation and a variation difference critical value; and
and modifying the state change critical value, and enabling the ambient light sensor and the infrared sensor to enter a standby state to wait for the next sensing operation.
6. The intelligent parking sensing method of claim 1, further comprising:
continuously performing sensing operation according to a second preset time interval by using the infrared sensor;
judging whether the parking space state is changed;
if the parking space state is not changed, updating the parking space sensing parameters of the current parking space according to the currently sensed light sensing value; and
if the parking space status changes, the parking space status of the current parking space is changed.
7. An electronic device, comprising:
the system comprises an ambient light sensor, a light sensor and a control unit, wherein the ambient light sensor is used for sensing an ambient light source of a current parking space at intervals of a first preset time interval so as to obtain a light sensing value;
the infrared sensor is used for sensing the parking space state of the current parking space; and
the processing module is used for judging the initial parking state of the current parking space, obtaining the light sensing value from the ambient light sensor, judging whether the parking space state of the current parking space is changed according to the initial parking state, confirming whether the parking space state is changed to be true again by using the infrared sensor when the parking space state is changed, and changing the parking space state of the current parking space if the parking space state is changed to be true.
8. The electronic device of claim 7, further comprising:
when the parking space state is initially empty, if the light sensing value sensed by the ambient light sensor is smaller than the threshold T1 for the parking space occupation, it indicates that the current parking space is occupied, and when the parking space state is initially occupied, if the light sensing value sensed by the ambient light sensor is larger than the threshold T2 for the parking space being empty, it indicates that the current parking space is empty.
9. The electronic device of claim 8, further comprising:
the infrared sensor senses the parking space state of the current parking space every second preset time interval; and
when the parking space state is not changed, the processing module updates the parking space sensing parameter of the current parking space according to the light sensing value sensed currently, and changes the parking space state of the current parking space when the parking space state is changed.
10. A computer readable storage medium having stored thereon a computer program which, when executed, performs the steps of the intelligent parking sensing method as recited in any of claims 1 to 6.
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