CN111754802A

CN111754802A - Parking space detector, parking space detection method, parking space guidance system and storage medium

Info

Publication number: CN111754802A
Application number: CN201910243696.3A
Authority: CN
Inventors: 沈兆龙; 申兴琭
Original assignee: Suzhou Huijing Optoelectronic Technology Co ltd
Current assignee: Suzhou Huijing Optoelectronic Technology Co ltd
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-10-09

Abstract

The application provides a parking stall detector, parking stall detection method, parking stall bootstrap system and storage medium, this parking stall detector includes: the piezoelectric sensor is used for converting vibration in a target area into a corresponding vibration signal in real time and outputting an awakening signal when the vibration signal meets a preset condition; the main control module is used for outputting a trigger signal when being awakened by the awakening signal; the wireless distance measurement module is used for measuring the distance of the barrier in the target parking space under the trigger of the trigger signal and providing the measured distance data to the main control module so that the main control module can determine the occupation state of the target parking space according to the distance data; the wireless transmission module is used for switching to a working mode when receiving a data sending request of the main control module and sending the occupation state of the target parking space to the upper computer; and the battery module is used for supplying power to the parking space detector. This application can reduce parking stall bootstrap system's consumption and cost.

Description

Parking space detector, parking space detection method, parking space guidance system and storage medium

Technical Field

The present disclosure relates to parking space detection technologies in parking lots, and in particular, to a parking space detector, a parking space detection method, a parking space guidance system, and a storage medium.

Background

With the development of economic society and the improvement of the living standard of people, people who drive and go out and vehicles on roads are more and more, but the planned land of a parking lot in a city is not increased, so that the phenomena of difficult parking and disordered parking frequently occur. In addition, the cost of human resources in the large city is high, the effective management of the parking lot is not enough, so that limited parking places cannot be fully utilized, a plurality of car owners can find the parking lot and parking places which can be parked on the road when coming and going back in the peak period, the traffic order is further deteriorated, the cost of traffic management is further improved, and the environmental pollution is aggravated.

Parking space guidance systems have been developed to effectively guide and manage parked vehicles entering and exiting a parking lot. The system can realize convenient and rapid parking of a parking person, monitors the parking spaces, enables the parking space management of the parking lot to be more standard and orderly, and improves the utilization rate of the parking spaces. The parking guidance system generally includes a parking detector and a management system. Each parking space detector in the parking lot can detect the idle condition of the parking space in real time and provide the detection result for the management system. The management system collects the detection results to obtain the empty and full condition of the parking lot, and displays the empty and full condition of the parking lot at the entrance and other positions of the parking lot in real time for the parking person to make a decision.

However, in the process of implementing the present application, the inventor of the present application finds that the existing parking space detector not only has high power consumption, but also has high cost. Therefore, how to reduce the power consumption and cost of the parking space guidance system has become a technical problem to be solved in the field.

Disclosure of Invention

An object of an embodiment of the present specification is to provide a parking space detector, a parking space detection method, a parking space guidance system, and a storage medium, so as to reduce power consumption and cost of the parking space guidance system.

In order to achieve the above object, in one aspect, an embodiment of the present specification provides a parking space detector, including:

the piezoelectric sensor is used for converting vibration in a target area into a corresponding vibration signal in real time and outputting an awakening signal when the vibration signal meets a preset condition;

the main control module is used for outputting a trigger signal when being awakened by the awakening signal;

the wireless distance measurement module is used for measuring the distance of the barrier in the target parking space under the trigger of the trigger signal and providing the measured distance data to the main control module so that the main control module can determine the occupation state of the target parking space according to the distance data;

the wireless transmission module is used for switching to a working mode when receiving a data sending request of the main control module and sending the occupation state of the target parking space to the upper computer;

and the battery module is used for supplying power to the parking space detector.

In the parking space detector of the embodiment of this specification, the vibration signal satisfying the preset condition includes: the voltage value of the vibration signal is larger than a preset voltage threshold value.

The parking stall detector of this specification embodiment, output trigger signal includes:

and outputting the trigger signal after delaying the preset time.

The parking stall detector of this specification embodiment, carry out the range finding to the barrier in the target parking stall, include:

measuring the distance of the obstacles in the target parking space for multiple times, and correspondingly obtaining multiple distance data;

correspondingly, the determining the occupation state of the target parking space according to the distance data includes:

judging whether the variance of the plurality of distance data is within a preset variance range;

if the variance of the distance data is within a preset variance range, judging whether the mean value of the distance data is within the preset distance range;

if the average value of the plurality of distance data is within the distance range, determining that the target parking space is in an occupied state;

and if the average value of the plurality of distance data is out of the distance range, determining that the target parking space is in an idle state.

In the parking space detector of the embodiment of the present specification, the main control module is further configured to, before determining whether the variance of the plurality of distance data is within a preset variance range, reject distance data exceeding a preset distance threshold from the plurality of distance data.

The parking stall detector of this specification embodiment still includes:

the main control module is further used for carrying out vibration detection reset on the piezoelectric sensor and controlling the wireless distance measuring module, the wireless transmission module and the main control module to switch to a sleep mode when the occupation state is confirmed to be sent to the upper computer.

The parking space detector of this description embodiment, parking space detector disposes multichannel wireless ranging module for carry out the range finding to the barrier in the different target parking spaces.

The parking space detector in the embodiment of the present specification, the parking space detector has a housing, and the piezoelectric sensor, the main control module, the wireless transmission module and the battery module are disposed in the housing; the casing has a plurality of detection faces of different orientation, is provided with wireless ranging module all the way on every detection face.

In the parking space detector provided by the embodiment of the specification, an inner supporting plate is arranged in a shell, the inner supporting plate is parallel to a horizontal plane, and the piezoelectric sensor is fixed in the middle of the inner supporting plate.

In the parking space detector in the embodiment of the specification, the shell is made of a corrosion-resistant material with preset mechanical strength.

In the parking space detector in the embodiment of the specification, the shell is filled with the sealant.

The parking space detector of this specification embodiment, the upper end of casing is equipped with the end cover, battery module is located the end cover below.

The parking stall detector of this specification embodiment, the lower extreme of casing is provided with the mounting base.

On the other hand, this specification embodiment still provides a parking stall detection method, includes:

converting the vibration in the target area into a corresponding vibration signal in real time;

when the vibration signal meets a preset condition, ranging the obstacle in the target parking space to obtain distance data;

determining the occupation state of the target parking space according to the distance data;

and sending the occupation state of the target parking space to an upper computer.

In the parking space detection method according to the embodiment of the present specification, the step of satisfying the preset condition with the vibration signal includes: the voltage value of the vibration signal is larger than a preset voltage threshold value.

In the parking space detection method according to the embodiment of the present specification, when the vibration signal satisfies a preset condition, the method for measuring a distance of an obstacle in a target parking space includes:

and when the vibration signal meets a preset condition, delaying for a preset time and then ranging the obstacle in the target parking space.

The parking space detection method of the embodiment of the present specification, the distance measurement of the obstacle in the target parking space includes:

The parking space detection method of the embodiment of the specification further comprises the following steps:

and eliminating the distance data exceeding a preset distance threshold value in the distance data before judging whether the variance of the distance data is within a preset variance range.

and when the occupation state is confirmed to be sent to the upper computer, carrying out vibration detection reset and switching to a sleep mode.

On the other hand, this description embodiment still provides a parking stall bootstrap system, includes host computer and at least one parking stall detector, wherein, parking stall detector includes:

the wireless transmission module is used for switching to a working mode when receiving a data sending request of the main control module and sending the data to the upper computer to control the occupation state of the target parking space;

In another aspect, the embodiments of the present specification further provide a computer storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the following steps:

According to the technical scheme provided by the embodiment of the specification, the parking space detector provided by the embodiment of the specification detects the vibration of the vehicle by adopting the piezoelectric sensor, and the piezoelectric sensor works based on the principle of the positive piezoelectric effect, so that external power supply is not needed to maintain the work of the piezoelectric sensor, and the whole power consumption of the parking space detector is favorably reduced. Moreover, the parking space detector only starts the main control module, the wireless distance measuring module and the wireless transmission module to work under specific conditions (the vibration signals meet preset conditions), so that the power consumption of the parking space detector can be greatly reduced. In addition, because the parking space detector of this specification embodiment adopts the battery to supply power, need not lay the supply cable, adopt wireless transmission's form to carry out data communication between parking space detector and the host computer moreover, it also need not to lay communication cable like current ultrasonic wave parking space detector etc. to can be favorable to further reducing the cost of parking space detector. Therefore, the embodiment of the specification reduces the power consumption and the cost of the parking space guidance system.

Drawings

In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present specification, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort. In the drawings:

FIG. 1 is a schematic diagram of a parking space guidance system according to some embodiments of the present disclosure;

fig. 2 is a schematic structural diagram of a parking space detector according to some embodiments of the present disclosure;

fig. 3 is a schematic structural diagram of a parking space detector according to another embodiment of the present disclosure;

fig. 4 is a schematic view illustrating a usage state of a parking space detector according to some embodiments of the present disclosure;

fig. 5 is a schematic view illustrating a usage state of a parking space detector according to another embodiment of the present disclosure;

fig. 6 is a schematic view illustrating a usage state of a parking space detector according to another embodiment of the present disclosure;

fig. 7 is a flowchart of a parking space detection method according to some embodiments of the present disclosure.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present specification, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the present specification without any inventive step should fall within the scope of protection of the present specification. For example, in the following description, forming the second component over the first component may include embodiments in which the first and second components are formed in direct contact, embodiments in which the first and second components are formed in non-direct contact (i.e., additional components may be included between the first and second components), and so on.

Also, for ease of description, some embodiments of the present description may use spatially relative terms such as "above …," "below …," "top," "below," etc., to describe the relationship of one element or component to another (or other) element or component as illustrated in the various figures of the embodiments. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or components described as "below" or "beneath" other elements or components would then be oriented "above" or "over" the other elements or components.

In the process of implementing the present application, the inventor of the present application finds that there are two main types of parking space detectors in the existing parking space guidance system, which are specifically described below.

In the conventional car position guidance system, a typical car position detector is an ultrasonic car position detector. The method adopts the reflection principle of sound waves, when a vehicle enters a parking space, the ultrasonic probe detects that the distance in front changes, the vehicle is judged to enter, information is sent to the server through a network, and after the server analyzes the data, the parking space information of a parking lot is refreshed so as to guide parking spaces of parking persons. However, the ultrasonic parking space detector generally detects whether there is a vehicle in a parking space by active real-time query, so that it needs to be kept in a working state all the time, which results in higher power consumption. Therefore, in order to meet the working requirements of the ultrasonic parking space detector, the commercial power is generally used for supplying power, and wires need to be laid for supplying power to the commercial power, so that the cost of parking space guidance is additionally increased.

In addition, in the existing parking space guidance system, another typical parking space detector is a geomagnetic parking space detector. The intelligent parking space state monitoring system based on the electromagnetic induction principle has the advantages that induced current is generated when a vehicle enters a parking space, the main control chip is awakened to work, detected data are sent to the server through the main control chip, and the current parking space state of the parking lot is indicated through the parking lot display screen after the server performs data analysis. Compared with an ultrasonic parking space detector, the geomagnetic parking space detector is started only when a vehicle enters a parking space, and therefore power consumption is reduced. However, the earth magnetism module of earth magnetism parking stall detector generally need bury underground, generally can destroy ground or road surface during the implementation, and the change or the maintenance of earth magnetism module are very inconvenient moreover. Therefore, the cost of the geomagnetic parking spot detector is relatively high.

In order to solve the problems of high power consumption and high cost of the parking space guidance system, the embodiment of the specification improves the parking space detector of the parking space guidance system. Referring to fig. 1, in some embodiments of the present disclosure, a parking guidance system may include an upper computer, at least one parking space detector (typically a plurality), and at least one terminal (typically a plurality). As shown in fig. 2, the parking space detector may include a piezoelectric sensor, a main control module, a wireless distance measuring module, a wireless transmission module, and a battery module. The piezoelectric sensor can be used for converting vibration in a target area into a corresponding vibration signal in real time, and outputting a wake-up signal when the vibration signal meets a preset condition. The main control module can be used for outputting a trigger signal when being awakened by the awakening signal. The wireless distance measurement module can be used for measuring the distance of the obstacle in the target parking space under the triggering of the triggering signal, and providing the measured distance data for the main control module, so that the main control module can determine the occupation state of the target parking space according to the distance data. The wireless transmission module can be used for switching to a working mode when receiving the data sending request of the main control module and sending the data to the upper computer to the occupying state of the target parking space. The battery module may be used to power the parking spot detector.

Therefore, in the parking space detector in the embodiment of the specification, the piezoelectric sensor is used for detecting the vibration of the vehicle, and the piezoelectric sensor works based on the principle of the positive piezoelectric effect and does not need external power supply to maintain the work of the piezoelectric sensor, so that the overall power consumption of the parking space detector is reduced, and the parking space detector can continue to operate for a longer time. Moreover, the parking space detector of this specification embodiment only starts host system, wireless ranging module and wireless transmission module work under specific condition (vibration signal satisfies the condition of predetermineeing), thereby can greatly reduced parking space detector's consumption. It should be noted that, because the parking space detector in the embodiment of this specification adopts the battery to supply power, it is not necessary to lay a power supply cable, thereby being beneficial to further reducing the cost of the parking space detector. In addition, the parking space detector and the upper computer in the embodiment of the specification adopt a wireless transmission mode for data communication, and a communication cable does not need to be arranged like the existing ultrasonic parking space detector and the like, so that the parking space guiding cost is further reduced.

In some embodiments of the present description, when vibration occurs in a target area (e.g., a sensing area of a piezoelectric sensor in a parking lot), the piezoelectric sensor may convert such mechanical vibration into a corresponding vibration signal (e.g., a voltage signal). Due to more external vibration disturbance, for example, a pedestrian approaches, natural disturbance, etc., the piezoelectric sensor may generate a corresponding vibration signal. In order to prevent the parking space detector from being started due to non-vehicle vibration, the vehicle vibration needs to be effectively distinguished from some condition areas such as pedestrian approach and natural disturbance. The inventor of the present application has found that, with respect to external vibration disturbances, vibrations caused by the vehicle entering and exiting the target area have specific characteristics (e.g., large amplitude, etc.), and for this reason, the piezoelectric sensor may output the wake-up signal only when the vibration signal satisfies a preset condition.

In some exemplary embodiments of the present description, the vibration signal satisfies a preset condition, for example, the voltage value of the vibration signal is greater than a preset voltage threshold, that is, the vibration may be recognized as a vibration caused by the vehicle when the voltage value of the vibration signal is greater than the preset voltage threshold. At this time, the piezoelectric sensor may output a wake-up signal; the main control module is in a dormant state in a normal state, and when the wake-up signal is received, the main control module is awakened from the dormancy state and starts to enter a working mode.

In some exemplary embodiments of the present disclosure, the pressure sensitive element of the piezoelectric sensor may be made of an inorganic piezoelectric material (e.g., piezoelectric crystal, piezoelectric ceramic, etc.) or an organic piezoelectric material (e.g., polyvinylidene fluoride (PVDF)), which is not limited in this disclosure and may be selected according to the needs.

In some exemplary embodiments of the present description, the wake-up signal output by the piezoelectric sensor may be, for example, a high-level signal or the like. And in the piezoelectric sensor, the comparison and judgment of the voltage value of the vibration signal and a preset voltage threshold value can be realized through a comparator and the like. Accordingly, a voltage detection pin may be disposed on the main control module to receive the high level signal. In other embodiments of the present disclosure, to ensure that the high level signal output by the piezoelectric sensor is suitable for being received by the voltage detection pin, the high level signal output by the piezoelectric sensor may be signal conditioned (e.g., voltage converted, etc.) to match the voltage detection pin.

In some embodiments of the present disclosure, the main control module may include, but is not limited to, a single chip microcomputer, a Micro Control Unit (MCU), a Digital Signal Processor (DSP), a Programmable Logic Controller (PLC), and the like. The specification does not limit this, and the specific choice can be selected as required.

A time process is needed for the vehicle to enter the target parking space for parking or to exit from the target parking space. For the target space, this time course is transient, not steady. Therefore, in some embodiments of the present description, in order to more accurately obtain the idle state of the target parking space, when the main control module is awakened by the wake-up signal, the main control module may delay the preset time period and then output the trigger signal, so as to obtain the idle state of the target parking space in the steady state. For example, in an exemplary embodiment of the present specification, the delay time period may be, for example, 1 minute.

In some embodiments of the present disclosure, the wireless ranging module is normally in a dormant state, and when triggered by the trigger signal, the wireless ranging module enters a working state from the dormant state to start working, that is, ranging an obstacle in a target parking space, and providing measured distance data to the main control module, so that the main control module can determine an occupied state of the target parking space according to the distance data.

In some embodiments of the present disclosure, in order to improve the ranging accuracy, under the triggering of the trigger signal, the wireless ranging module may perform multiple ranging on the obstacle in the target parking space, and correspondingly obtain multiple distance data. Correspondingly, the determining, by the master control module, the occupancy state of the target parking space according to the distance data may include the following steps:

judging whether the variance of the plurality of distance data is within a preset variance range; otherwise, ranging can be carried out on the obstacles in the target parking space for multiple times again;

if the variance of the plurality of distance data is within a preset variance range, whether the mean value of the plurality of distance data is within the preset distance range can be further judged;

if the average value of the plurality of distance data is within the distance range, determining that the target parking space is in an occupied state; statistics show that when a vehicle enters a target parking space and stops stably, the distance between an obstacle (i.e., the vehicle) in the target parking space and the parking space detector is usually short and in a proper distance range. Therefore, whether the target parking space is occupied or not can be identified by judging whether the average value is within the preset distance range or not. Similarly, when the vehicle is driven out and leaves, the target space is generally free of obstacles, so that the distance between the obstacle located outside the target space and the space detector may be measured by the wireless ranging module, and the distance is usually beyond the above-mentioned distance range.

In other embodiments of this specification, before the determining whether the variance of the plurality of distance data is within the preset variance range, the main control module may further eliminate distance data exceeding a preset distance threshold from the plurality of distance data, so as to further improve the accuracy of detecting the idle state of the target parking space.

In some exemplary embodiments of the present disclosure, the wireless ranging module may be, for example, an ultrasonic ranging module, a laser ranging module, or a radar ranging module, etc. The specification does not limit this, and the specific choice can be selected as required.

In some embodiments of the present description, the wireless transmission module is in a dormant state in a normal state, and when receiving a data transmission request from the main control module, the wireless transmission module switches to a working mode, and transmits an occupied state of the target parking space to an upper computer based on the data transmission request. The upper computer can update the parking space occupation state of the parking lot according to the occupation state of the target parking space, and the parking space occupation state of the parking lot is provided for the parking person through the terminal, so that the parking person can make a reference decision. In some embodiments of the present disclosure, the upper computer may provide the parking space occupation status of the parking lot to the parking person through any suitable terminal. For example, the upper computer can output and display the parking space occupation state of the parking lot on a display screen at the entrance of the parking lot and other positions; for another example, the upper computer may return to the parking space occupation state of the parking lot after receiving the parking lot state query request sent by the user through the mobile terminal or the desktop terminal.

In some exemplary embodiments of the present description, the wireless transmission module may be a wireless communication module based on one or more wireless communication protocols. The wireless communication protocol may include, but is not limited to, a NarrowBand Internet of Things (NB-IoT) protocol, and the like.

In some embodiments of the present disclosure, when it is determined that the occupancy state is sent to the upper computer (for example, the main control module receives a sending response returned by the wireless transmission module after the data sending is completed), the main control module may further perform vibration detection and reset on the piezoelectric sensor, eliminate the wake-up signal, and control the wireless ranging module, the wireless transmission module, and the main control module to switch to the sleep mode. In an exemplary embodiment of the present disclosure, the main control module may also enable the wireless ranging module and the wireless transmission module to enter a sleep mode by sending a sleep command to the wireless ranging module and the wireless transmission module. In another exemplary embodiment of the present specification, when the main control module receives a sending response returned by the wireless transmission module after the data sending is completed, it may be determined that the parking space state check is completed, so that the output of the trigger signal may be stopped, and the data sending request is no longer output. Accordingly, once the wireless ranging module loses the triggering of the triggering signal, the wireless ranging module can stop working and enter a sleep mode; after the wireless transmission module finishes sending data and returns a sending response, if a new data sending request is not received, the wireless transmission module can stop working and enter a sleep mode.

In the prior art, due to condition limitation, some parking space detectors may only be capable of detecting one parking space. For example, use earth magnetism car position detector as an example, in view of earth magnetism car position detector's theory of operation, its earth induction coil must be installed with specific gesture during the implementation, this just leads to earth magnetism car position detector generally can only one to one detection, and a car position is detected to earth magnetism car position detector promptly, so makes the cost of car position guide increase greatly. In order to solve this problem, in some embodiments of the present disclosure, the parking space detector may be configured with multiple wireless ranging modules for ranging obstacles in different target parking spaces, so that one parking space detector may detect multiple parking spaces simultaneously.

Referring to fig. 3, in some embodiments of the present disclosure, the parking space detector may have a housing 101, and the piezoelectric sensor 105, the main control module 106, the wireless transmission module 107, the battery module 104, the signal conditioning module 110, and the like may be disposed in the housing 101. The housing 101 may have a plurality of detection surfaces facing different directions, and each detection surface may be provided with a

wireless ranging module

103a, 103b, so as to detect an occupied state of a corresponding parking space, for example, as shown in fig. 4. In the embodiment of the present specification, the parking space detector may be configured with wireless ranging modules of corresponding paths according to actual needs, for example, for a linear parking space as shown in fig. 5, it is a better choice that one parking space detector is configured with two wireless ranging modules. Wherein, the arrow in fig. 5 points to the target parking space to be detected of the parking space detector. For another example, for a parking space with a non-rectangular shape as shown in fig. 6, it is preferable that one parking space detector is configured with four wireless distance measuring modules. Also, the arrow in fig. 6 indicates a target parking space to be detected as a parking space detector.

With continued reference to fig. 3, to facilitate the vibration detection of the piezoelectric sensor 105, an inner support plate 109 may be disposed within the housing 101, the inner support plate 109 may be parallel to the horizontal plane, and the piezoelectric sensor 105 may be fixed to the middle of the inner support plate 109. In order to protect the parking space detector and prevent water and dust from entering, the interior of the housing 101 may be sealed by filling a sealant.

With reference to fig. 3, an end cap 108 may be disposed at an upper end of the housing 101, and the battery module 104 of the parking space detector may be located below the end cap 108, so that battery replacement and internal maintenance of the device may be facilitated through the end cap 108. The lower end of the shell 101 may be provided with a mounting base, and the mounting base may be provided with mounting

holes

102a and 102b, so as to fixedly mount the parking space detector.

It should be noted that, in view of the usage environment of the parking space detector, the material of the housing 101 may be a corrosion-resistant material with a predetermined mechanical strength (for example, a high-strength aluminum alloy material, a stainless steel material, or a polymer material, etc. to have a certain impact-resistant and rust-proof function, thereby being beneficial to improving the service life thereof).

In some embodiments of the present disclosure, the battery module may adopt a battery or a battery pack with a large capacity and a high energy density, so as to improve the cruising ability of the parking space detector. For example, in one exemplary embodiment, the battery module may use a polymer lithium battery having a capacity of 5000mAh or more, or the like.

For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functions of the various elements may be implemented in the same one or more software and/or hardware implementations of the present description.

Referring to fig. 7, the parking space detection method of the parking space detector may include the following steps:

and S101, converting the vibration in the target area into a corresponding vibration signal in real time.

And S102, when the vibration signal meets a preset condition, ranging the obstacle in the target parking space to obtain distance data.

S103, determining the occupation state of the target parking space according to the distance data.

And S104, sending the occupation state of the target parking space to the upper computer.

While the process flows described above include operations that occur in a particular order, it should be appreciated that the processes may include more or less operations that are performed sequentially or in parallel (e.g., using parallel processors or a multi-threaded environment).

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element.

As will be appreciated by one skilled in the art, embodiments of the present description may be provided as a method, system, or computer program product. Accordingly, the description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the description may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

This description may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the method embodiment, since it is substantially similar to the system embodiment, the description is simple, and the relevant points can be referred to the partial description of the system embodiment.

The above description is only an example of the present specification, and is not intended to limit the present specification. Various modifications and alterations to this description will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present specification should be included in the scope of the claims of the present specification.

Claims

1. A parking space detector, comprising:

2. The parking space detector of claim 1, wherein the vibration signal satisfying a preset condition comprises: the voltage value of the vibration signal is larger than a preset voltage threshold value.

3. The parking space detector of claim 1, wherein the outputting the trigger signal comprises:

and outputting the trigger signal after delaying the preset time.

4. The parking space detector of claim 1, wherein the ranging of the obstacle in the target parking space comprises:

5. The parking space detector of claim 4, wherein the main control module is further configured to, before determining whether the variance of the plurality of distance data is within a preset variance range, reject distance data exceeding a preset distance threshold from the plurality of distance data.

6. The parking space detector of claim 1, further comprising:

7. The parking space detector of claim 1, wherein the parking space detector is configured with multiple wireless ranging modules for ranging obstacles in different target parking spaces.

8. The parking space detector of claim 7, wherein the parking space detector has a housing, and the piezoelectric sensor, the main control module, the wireless transmission module and the battery module are disposed in the housing; the casing has a plurality of detection faces of different orientation, is provided with wireless ranging module all the way on every detection face.

9. The parking space detector of claim 8, wherein an inner support plate is arranged in the shell, the inner support plate is parallel to a horizontal plane, and the piezoelectric sensor is fixed in the middle of the inner support plate.

10. The parking space detector of claim 9, wherein the housing is made of a corrosion-resistant material having a predetermined mechanical strength.

11. The parking spot detector of claim 8, wherein the housing is filled with a sealant.

12. The parking space detector of claim 8, wherein an end cap is provided at an upper end of the housing, and the battery module is located below the end cap.

13. The parking space detector as claimed in claim 8, wherein the lower end of the housing is provided with a mounting base.

14. A parking space detection method is characterized by comprising the following steps:

15. The parking space detection method according to claim 14, wherein the vibration signal satisfying a preset condition comprises: the voltage value of the vibration signal is larger than a preset voltage threshold value.

16. The parking space detection method according to claim 14, wherein the step of measuring the distance of the obstacle in the target parking space when the vibration signal satisfies a preset condition includes:

and when the vibration signal meets the preset condition, delaying for a preset time and then ranging the obstacle in the target parking space.

17. The parking space detection method of claim 14, wherein the ranging of the obstacle in the target parking space comprises:

18. The parking space detection method according to claim 17, further comprising:

19. The parking space detection method according to claim 14, further comprising:

20. The utility model provides a parking stall bootstrap system which characterized in that, includes host computer and at least one parking stall detector, wherein, parking stall detector includes:

21. A computer storage medium having a computer program stored thereon, the computer program, when executed by a processor, performing the steps of: