A parking lot parking indicator light changing method, device and system

Abstract

The present invention relates to the field of parking lot management, and in particular to a method, device and system for changing parking space indicator lights in a parking lot. The method comprises: respectively obtaining the signal strength of vehicle signals received by all positioning devices, determining the location of the vehicle, and determining the driving speed of the vehicle; if the driving speed of the vehicle is within a preset range, obtaining monitoring images of a preset number of monitoring devices around the location of the vehicle; if there is a monitoring image of the vehicle in a parking state in the acquired monitoring images, determining the monitoring device X corresponding to the monitoring image of the vehicle in a parking state; determining the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signals received by the preset number of monitoring devices around the location of the vehicle, and controlling the lighting state of the monitoring device Y according to the monitoring image of the monitoring device X. The present invention solves the problem that the monitoring device cannot correctly display the parking state of the parking space if no corresponding relationship is established.

Description

Technical Field

[0001] The invention relates to the field of parking lot management, and in particular to a method, device and system for changing parking space indicator lights of a parking lot. Background Art

[0002] The parking guidance system is an intelligent parking guidance system that guides vehicles to empty parking spaces in a parking lot. Usually, the detector detects the parking space and displays the empty parking space information. The driver can park easily through the empty parking space information. The parking guidance system can enable parkers to park conveniently and quickly, and monitor the parking spaces, making the parking space management more standardized and orderly, and improving the utilization rate of parking spaces.

[0003] For some parking lots, the lane distance is designed to be narrow, so there is a parking guidance system that installs monitoring equipment on both sides of the lane in a facing manner. The monitoring equipment adopts an integrated design of camera and parking indicator light. The monitoring equipment on the opposite side of the parking space captures the parking status of the parking space, and the monitoring equipment on the same side of the parking space displays the parking status of the parking space.

[0004] To do so, it is necessary to manually establish a corresponding relationship between the monitoring equipment on the opposite side of the parking space and the monitoring equipment on the same side of the parking space. If the corresponding relationship is not manually established or the monitoring equipment is damaged and replaced, the monitoring equipment on the same side of the parking space cannot display the parking status of the parking space based on the parking status of the parking space captured by the monitoring equipment on the opposite side of the parking space. There is a problem that the monitoring equipment cannot correctly display the parking status of the parking space if a corresponding relationship is not established. Summary of the invention

[0005] Based on this, it is necessary to provide a parking lot parking indicator light changing method, device and system to address the above problems.

[0006] The embodiment of the present invention is implemented as follows: a method for changing a parking space indicator light of a parking lot, wherein the method for changing a parking space indicator light of the parking lot comprises:

[0007] S101, respectively obtaining the signal strength of the vehicle signal received by all positioning devices, and determining the location of the vehicle according to the obtained signal strength;

[0008] S102, determining the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot;

[0009] S103, determining whether the driving speed of the vehicle is within a preset range, and if so, obtaining monitoring images of a preset number of monitoring devices around the location of the vehicle;

[0010] S104, determining whether there is a monitoring picture of the vehicle in a parked state in the acquired monitoring pictures, and if so, determining the monitoring device X corresponding to the monitoring picture of the vehicle in a parked state;

[0011] S105, if the acquired monitoring picture does not contain a picture of the vehicle being parked, repeat S103-S104 until a picture of the vehicle being parked is found in the acquired monitoring picture;

[0012] S106, determining the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signal received by a preset number of monitoring devices around the location of the vehicle, and controlling the lighting state of the monitoring device Y according to the monitoring screen of the monitoring device X.

[0013] In one embodiment, the present invention provides a parking lot parking indicator light changing device, the parking lot parking indicator light changing device comprising:

[0014] A location determination module is used to obtain the signal strength of the vehicle signal received by all positioning devices respectively, and determine the location of the vehicle according to the obtained signal strength;

[0015] A speed determination module, used to determine the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot;

[0016] The image acquisition module is used to determine whether the driving speed of the vehicle is within a preset range, and if so, to acquire monitoring images of a preset number of monitoring devices around the location of the vehicle;

[0017] A device determination module is used to determine whether there is a monitoring picture of the vehicle in a parking state in the acquired monitoring picture, and if so, determine the monitoring device X corresponding to the monitoring picture of the vehicle in a parking state;

[0018] The lighting determination module is used to determine the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signal received by a preset number of monitoring devices around the location of the vehicle, and control the lighting state of the monitoring device Y according to the monitoring screen of the monitoring device X.

[0019] In one embodiment, the present invention provides a parking lot parking space indicator light changing system, the parking lot parking space indicator light changing system comprising: a control device and a plurality of monitoring devices connected to the control device;

[0020] The control device is used to execute the steps of the above parking lot parking space indicator light method;

[0021] The monitoring device includes an image acquisition module and a parking indicator light module;

[0022] The image acquisition module is used to obtain a monitoring picture of the parking situation of the parking space opposite to the image acquisition module;

[0023] The parking space indicator light module is used to display the vacancy status of the parking space on the same side of the parking space indicator light module.

[0024] A parking space indicator light changing method provided by an embodiment of the present invention obtains the signal strength of vehicle signals received by all positioning devices respectively, and determines the position of the vehicle according to the obtained signal strength; determines the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot; judges whether the driving speed of the vehicle is within a preset range, and if so, obtains the monitoring screens of a preset number of monitoring devices around the position of the vehicle; judges whether there is a monitoring screen of the vehicle in a parking state in the obtained monitoring screen, and if so, determines the monitoring device X corresponding to the monitoring screen of the vehicle in a parking state; if there is no picture of the vehicle in a parking state in the obtained monitoring screen, repeats the speed judgment step and the picture judgment step until there is a picture of the vehicle in a parking state in the obtained monitoring screen; determines the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signals received by the preset number of monitoring devices around the position of the vehicle, and controls the lighting state of the monitoring device Y according to the monitoring screen of the monitoring device X. In this way, after determining the monitoring device X corresponding to the monitoring screen of the vehicle in the parking state, the monitoring device Y corresponding to the parking space where the vehicle is parked is determined according to the signal strength of the vehicle signal received by the preset number of monitoring devices around the location of the vehicle, and the light status of the monitoring device Y is controlled according to the monitoring screen of the monitoring device X. There is no artificially established corresponding relationship between the monitoring device Y and the monitoring device X, but the monitoring device X can collect the monitoring screen of the parking space where the vehicle is parked, and the light status of the monitoring device Y can represent the parking space status of the vehicle. It is not necessary to artificially establish a corresponding relationship between the monitoring device on the opposite side of the parking space and the monitoring device on the same side of the parking space, which solves the problem that the monitoring device cannot correctly display the parking status of the parking space when no corresponding relationship is established. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A flowchart of a method for changing a parking space indicator light in a parking lot provided in one embodiment;

[0026] Figure 2 A logic diagram of a parking lot parking indicator light conversion method provided in one embodiment;

[0027] Figure 3 A schematic diagram of a surveillance device shooting in an embodiment;

[0028] Figure 4 A schematic diagram of the distribution of parking spaces and monitoring equipment in one embodiment;

[0029] Figure 5 It is a structural block diagram of a parking lot parking indicator light changing device in one embodiment;

[0030] Figure 6 A structural block diagram of a parking lot parking indicator light conversion system in one embodiment;

[0031] Figure 7 FIG. 4 is a block diagram of the internal structure of a control device in one embodiment. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] It is understood that the terms "first", "second", etc. used in the present invention may be used herein to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, a first xx script may be referred to as a second xx script, and similarly, a second xx script may be referred to as a first xx script without departing from the scope of the present invention.

[0034] like Figure 1 , Figure 2 As shown, in one embodiment, a method for changing a parking space indicator light in a parking lot is proposed, which may specifically include the following steps:

[0035] S101, respectively obtaining the signal strength of the vehicle signal received by all positioning devices, and determining the location of the vehicle according to the obtained signal strength;

[0036] S102, determining the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot;

[0037] S103, determining whether the driving speed of the vehicle is within a preset range, and if so, obtaining monitoring images of a preset number of monitoring devices around the location of the vehicle;

[0038] S104, determining whether there is a monitoring picture of the vehicle in a parked state in the acquired monitoring pictures, and if so, determining the monitoring device X corresponding to the monitoring picture of the vehicle in a parked state;

[0039] S105, if the acquired monitoring picture does not contain a picture of the vehicle being parked, repeat S103-S104 until a picture of the vehicle being parked is found in the acquired monitoring picture;

[0040] S106, determining the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signal received by a preset number of monitoring devices around the location of the vehicle, and controlling the lighting state of the monitoring device Y according to the monitoring screen of the monitoring device X.

[0041] In this embodiment, the positioning device is also a monitoring device. In the parking lot, the monitoring devices are installed on both sides above the lanes and are numerous. Therefore, it is not necessary to use all the monitoring devices as positioning devices. The positioning device needs to know the specific location, so the monitoring device can be set at a specific location point in the parking lot. In this way, the monitoring device set at the specific location point is the positioning device. The positioning devices are evenly distributed in the parking lot. For example, a location point is set at the center of each preset area. The preset area can be 10m*10m or 20m*20m. It can be understood that the monitoring device at a specific location point is the positioning device. Of course, some monitoring devices can also be directly selected as positioning devices, and the specific locations of these positioning devices are known.

[0042] In this embodiment, all monitoring devices can receive vehicle signals, and the positioning device is a partial monitoring device, so the signal strength of the vehicle signals received by all positioning devices can be obtained in the process of obtaining the signal strength of the vehicle signals received by all monitoring devices, and the signal strength of the vehicle signals received by all positioning devices can be obtained simultaneously. The difference is that the positioning device has location information, while the monitoring device that is not the positioning device does not have location information.

[0043] In this embodiment, if Figure 3 As shown in the figure, the monitoring equipment is installed on both sides above the lane. The dotted line is the direction of the monitoring equipment shooting. It adopts the shooting method, that is, the monitoring equipment on one side shoots the parking image of the parking space on the other side, but the parking space indicator module on the monitoring equipment shows the parking space vacancy on the side where the monitoring equipment is located. The monitoring equipment adopts the integrated design of image acquisition module and parking space indicator module. Figure 4 As shown, the image acquisition module can be a camera, and one camera generally captures three parking spaces, that is, one monitoring device is responsible for capturing images of the three parking spaces on the opposite side, and is also responsible for displaying the parking space availability of the three parking spaces on the same side. The monitoring device is installed in front of the middle parking space among the three parking spaces.

[0044] In this embodiment, the vehicle signal received by the monitoring device can use iBeacon technology. iBeacon technology uses BLE (Bluetooth Low Energy) technology. Specifically, it uses the broadcast frame called "Advertising" in BLE. The advertising frame is a frame sent periodically and can be received by any device that supports BLE. The vehicle continuously broadcasts Bluetooth signals as a beacon, and the monitoring device receives the Bluetooth signals sent by the vehicle as a receiving end, thereby obtaining the signal strength of the vehicle signal received by the monitoring device.

[0045] In this embodiment, the vehicle is in a moving state from entering the parking lot to parking in the parking lot, and its position will also change, so the signal strength of the vehicle signal received by the positioning device will change with the change of the vehicle position, so S101 is a repeated step, and the closer the distance between the positioning device and the vehicle, the stronger the signal strength of the vehicle signal received by the positioning device. Similarly, determining the driving speed of the vehicle in S102 is also a repeated step, and the driving speed of the vehicle here is the instantaneous speed of the vehicle on the lane of the parking lot.

[0046] In this embodiment, the road map of the parking lot includes information such as the internal routes of the parking lot and the length of the internal routes.

[0047] In this embodiment, if the driving speed of the vehicle is not within the preset range, determination S103 is repeated.

[0048] In this embodiment, the preset range can be set according to the moving speed of the vehicle when parking. The data of the moving speed of the vehicle when parking can be obtained from the historical data of the vehicles parked in the parking lot, or from the historical data of the vehicles parked in other parking lots. Assuming that the moving speed of the vehicle when parking is 1.2m / s, the preset range can be 0-1.2m / s, where the speed of the vehicle in the direction of travel is set as positive, and the speed of the vehicle in the opposite direction of travel is set as negative. The vehicle generally slows down when entering the parking space. Therefore, the moving speed of the vehicle will drop to within the preset range.

[0049] In this embodiment, the purpose of S103 is to reduce the steps of image data processing. If the vehicle's driving speed is within a preset range, the vehicle has the intention to park, and only then does it need to obtain monitoring images of a preset number of monitoring devices around the location of the vehicle. The vehicle does not need to obtain monitoring images when looking for a parking space.

[0050] In this embodiment, the preset number can be set to 4. Figure 4As shown, the monitoring devices are arranged on both sides of the lane and along the lane. When there are two connected vacant parking spaces, and the two vacant parking spaces belong to the shooting range of different monitoring devices respectively, there are 4 monitoring devices associated with the two vacant parking spaces. When the vehicle is between the 4 monitoring devices, it is impossible to determine which vacant parking space the vehicle may be parked in, so the monitoring images of the 4 monitoring devices are obtained.

[0051] In this embodiment, the vehicle is in a parking state, which means that the vehicle enters an empty parking space. At this time, the vehicle is in a parking state regardless of whether the vehicle is still in a moving state.

[0052] In this embodiment, if the vehicle stops in the lane but does not enter an empty parking space, S103-S104 will also be executed, and there is no monitoring device X corresponding to the monitoring screen of the vehicle in the parking state. When the vehicle continues to travel, the travel speed needs to be re-determined, that is, S105.

[0053] In this embodiment, in S106, the preset number of monitoring devices around the location of the vehicle includes monitoring device X and monitoring device Y, and monitoring device X and monitoring device Y are not the same device. Monitoring device X can be determined by monitoring screen, while monitoring device Y cannot capture the vehicle and can only be determined by signal strength. After the vehicle enters the vacant parking space, since the distance between monitoring device Y and the vehicle is closer than the distance between monitoring device X and the vehicle, the signal strength of the vehicle signal received by monitoring device Y will also be stronger than the signal strength of the vehicle signal received by monitoring device X, so this point can be used to determine monitoring device Y.

[0054] A parking space indicator light changing method provided by an embodiment of the present invention obtains the signal strength of vehicle signals received by all positioning devices respectively, and determines the position of the vehicle according to the obtained signal strength; determines the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot; judges whether the driving speed of the vehicle is within a preset range, and if so, obtains the monitoring screens of a preset number of monitoring devices around the position of the vehicle; judges whether there is a monitoring screen of the vehicle in a parking state in the obtained monitoring screen, and if so, determines the monitoring device X corresponding to the monitoring screen of the vehicle in a parking state; if there is no picture of the vehicle in a parking state in the obtained monitoring screen, repeats the speed judgment step and the picture judgment step until there is a picture of the vehicle in a parking state in the obtained monitoring screen; determines the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signals received by the preset number of monitoring devices around the position of the vehicle, and controls the lighting state of the monitoring device Y according to the monitoring screen of the monitoring device X. In this way, after determining the monitoring device X corresponding to the monitoring screen of the vehicle in the parking state, the monitoring device Y corresponding to the parking space where the vehicle is parked is determined according to the signal strength of the vehicle signal received by the preset number of monitoring devices around the location of the vehicle, and the light status of the monitoring device Y is controlled according to the monitoring screen of the monitoring device X. There is no artificially established corresponding relationship between the monitoring device Y and the monitoring device X, but the monitoring device X can collect the monitoring screen of the parking space where the vehicle is parked, and the light status of the monitoring device Y can represent the parking space status of the vehicle. It is not necessary to artificially establish a corresponding relationship between the monitoring device on the opposite side of the parking space and the monitoring device on the same side of the parking space, which solves the problem that the monitoring device cannot correctly display the parking status of the parking space when no corresponding relationship is established.

[0055] In one embodiment, the step of respectively acquiring the signal strengths of vehicle signals received by all positioning devices and determining the location of the vehicle according to the acquired signal strengths includes:

[0056] Respectively obtain the signal strength of the vehicle signal received by all positioning devices;

[0057] For each acquired signal strength, determine whether the acquired signal strength is greater than a preset value, and if so, determine the distance between the positioning device and the vehicle corresponding to the acquired signal strength according to the relationship between the signal strength and the distance;

[0058] According to the signal strength from large to small, select at least 3 distances corresponding to the signal strength and use the three-point positioning method to determine the location of the vehicle.

[0059] In this embodiment, the preset value can be set to the median of the signal strength of the vehicle signal received by all positioning devices. In this way, positioning devices at relatively far distances can be screened out. The farther the distance, the more likely it is that the error between the acquired signal strength and the actual signal strength will be greater.

[0060] In this embodiment, the relationship between signal strength and distance is a common corresponding relationship. The distance can be It is expressed as, where A represents the signal strength when the transmitter and receiver are 1 meter apart, RSSI is the signal strength, and n is the environmental attenuation factor. The values ​​of A and n need to be adjusted according to the specific environment and the configuration of the iBeacon device. The iBeacon device here refers to the device on the vehicle that sends broadcasts.

[0061] In this embodiment, if the acquired signal strength is not greater than the preset value, no operation is performed.

[0062] In this embodiment, the three-point positioning method is a commonly used positioning method. After knowing the positions of three positioning devices and the distances from the three positioning devices to the vehicle, the position of the vehicle can be determined by the three-point positioning method. The more positioning devices there are, the more accurate the positioning will be, so at least three determined distances are used. It should be noted here that the positioning devices corresponding to the three determined distances used cannot be in the same straight line. If the three positioning devices are in the same straight line, then there will be two positions of the vehicle, so the position of the vehicle is determined by four or even more positioning devices. Of course, in the case where the positioning devices are evenly distributed in the parking lot and the distances between the positioning devices are far, the three positioning devices with the strongest signal strength will not be in the same straight line.

[0063] In one embodiment, determining the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot includes:

[0064] Get the road map of the parking lot and get the internal route of the parking lot;

[0065] Determine the distance s traveled by the vehicle according to the moving distance of the position of the vehicle on the internal route of the parking lot at every first preset time;

[0066] Depend on Get the vehicle's speed;

[0067] Wherein, t is the first preset time.

[0068] In this embodiment, the internal route of the parking lot mainly refers to the lanes in the parking lot.

[0069] In this embodiment, the first preset time can be set to any value within 0.1-1s, preferably 0.5s or 1s. The driving speed of the vehicle is essentially the instantaneous speed of the vehicle on the lane of the parking lot. The average speed in t is obtained. In order to make the average speed as close to the instantaneous speed as possible and reduce the calculation process, just set t as small as possible.

[0070] In one embodiment, the determining whether the driving speed of the vehicle is within a preset range, and if so, obtaining monitoring images of a preset number of monitoring devices around the location of the vehicle, includes:

[0071] Determine whether the vehicle's driving speed is within a preset range, and if so, determine whether the vehicle's driving speed drops to 0, and if so, determine whether the vehicle's driving speed is greater than 0 after a second preset time, and if so, do not obtain monitoring images of a preset number of monitoring devices around the location of the vehicle;

[0072] If it is determined that the driving speed of the vehicle is less than or equal to 0 after the second preset time has passed, acquiring monitoring images of a preset number of monitoring devices around the location of the vehicle;

[0073] If the driving speed of the vehicle does not drop to 0, the monitoring images of a preset number of monitoring devices around the location of the vehicle are not obtained.

[0074] In this embodiment, the driving speed of the vehicle is essentially the instantaneous speed of the vehicle on the lane of the parking lot. Therefore, in the process from entering the parking lot to parking in the parking space, the driving speed of the vehicle should be a gradually decreasing process. Even if the driving speed of the vehicle may increase in the process of driving in the lane, the driving speed of the vehicle will still be reduced to 0 in the final result. Since the driving speed is the instantaneous speed of the vehicle on the lane, when the vehicle is parking, the distance of the vehicle on the lane is 0, so the driving speed at this time is 0. Determining whether the driving speed of the vehicle drops to 0 can reduce the number of times the monitoring screens of the preset number of monitoring devices around the location of the vehicle are repeatedly obtained because the vehicle is in a low-speed driving within a preset range. However, there is also a situation where the vehicle stops and then restarts in the process of driving in the lane, so a second preset time is set. If the driving speed of the vehicle is judged to be greater than 0 after the second preset time, it indicates this situation, and it is not necessary to obtain the monitoring screens of the preset number of monitoring devices around the location of the vehicle. If the driving speed of the vehicle is judged to be equal to 0 after the second preset time, but the vehicle is still stagnant in the lane, the monitoring screen of the monitoring device will still be obtained, and step S105 will be executed at this time.

[0075] In this embodiment, the second preset time can be set to 5s.

[0076] In one embodiment, obtaining monitoring images of a preset number of monitoring devices around the location of the vehicle includes:

[0077] The signal strengths of vehicle signals received by all monitoring devices are obtained respectively, and the obtained signal strengths are sorted from large to small to obtain a signal strength sequence;

[0078] Determine the monitoring devices corresponding to the preset number of signal strengths at the front of the signal strength sequence as the preset number of monitoring devices around the location where the vehicle is located;

[0079] Obtain monitoring images of a preset number of monitoring devices around the location of the vehicle.

[0080] In this embodiment, the stronger the signal strength, the closer the distance between the monitoring device and the vehicle, and the monitoring devices corresponding to the preset number of signal strengths at the front of the signal strength sequence are the preset number of monitoring devices closest to the vehicle.

[0081] In this embodiment, all monitoring devices here include positioning devices. Here, the purpose is to determine a preset number of monitoring devices around the location of the vehicle based on the signal strength, rather than determining the location of the vehicle.

[0082] In one embodiment, the determining whether there is a monitoring picture of the vehicle in a parking state in the acquired monitoring picture includes:

[0083] For each acquired surveillance image, the vacant parking spaces are identified through image recognition technology;

[0084] Whether there is a monitoring picture of a vehicle in a parking state in the acquired monitoring picture is determined according to whether there is a vehicle entering an empty parking space and parking in the empty parking space.

[0085] In this embodiment, identifying vacant parking spaces by using image recognition technology is a prior art and will not be described in detail here.

[0086] In this embodiment, if a vehicle enters an empty parking space and stops there, it means that the acquired monitoring screen contains a monitoring screen showing the vehicle in a parked state; if no vehicle enters an empty parking space and stops there, it means that the acquired monitoring screen does not contain a monitoring screen showing the vehicle in a parked state.

[0087] In one embodiment, the method of determining the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signal received by a preset number of monitoring devices around the location where the vehicle is located includes:

[0088] In the signal strength sequence, a signal strength greater than the signal strength of the vehicle signal received by the monitoring device X is determined, and the monitoring device corresponding to the determined signal strength is recorded as the monitoring device to be determined;

[0089] Determine whether the number of the monitoring devices to be determined is 1, and if so, the monitoring device to be determined is determined to be monitoring device Y;

[0090] If the number of monitoring devices to be determined is not 1, then a curve a of the change in signal strength of the vehicle signal received by the monitoring device X over time is obtained;

[0091] Obtain a curve of the signal strength of the vehicle signal received by the to-be-determined monitoring device changing over time, recorded as the to-be-determined curve;

[0092] Calculate the similarity between each curve to be determined and the change curve a;

[0093] The to-be-determined monitoring device corresponding to the to-be-determined curve with the highest similarity is determined as the monitoring device Y corresponding to the parking space where the vehicle is parked.

[0094] In this embodiment, when the vehicle is parked in the parking space, the monitoring device X can capture the monitoring screen of the vehicle in the parking state. At this time, the monitoring device X is the monitoring device on the opposite side of the parking space where the vehicle is parked. Among the preset number of monitoring devices around the location of the vehicle, there must be a monitoring device on the same side of the parking space where the vehicle is parked. The monitoring device is used to display the vacancy of the parking space where the vehicle is parked. The distance between the monitoring device and the vehicle is closer than that between the monitoring device X and the vehicle, and the signal strength is stronger. When the parking space is at the boundary of the parking space management area under the responsibility of two monitoring devices, there may be a situation where the signal strength corresponding to the two monitoring devices is greater than the signal strength corresponding to the monitoring device X. At this time, since the distance between the vehicle and the two monitoring devices is relatively close, the signal strength may be relatively close, and the monitoring device Y cannot be accurately distinguished. Since the monitoring device X and the monitoring device Y are adjacent and closest in geographical location, the signal strength changes over time during the driving process of the vehicle are very close, that is, the change curve of the monitoring device X and the change curve of the monitoring device Y are most similar. Therefore, the monitoring device Y can be distinguished based on this point.

[0095] In this embodiment, the similarity between the change curves can be expressed in a variety of ways. The simplest way here is to compare the difference in signal strength between the two change curves at each time point, and obtain a standard deviation based on all the differences. The smallest standard deviation represents the greatest similarity. For example, if the two change curves are exactly the same, that is, the similarity is the greatest, then the difference in signal strength at each time point is 0, and the standard deviation of all differences is also 0.

[0096] In one embodiment, controlling the lighting state of monitoring device Y according to the monitoring screen of monitoring device X includes:

[0097] Identify all parking spaces in the monitoring screen of monitoring device X using image recognition technology;

[0098] Determine whether there is a parking space in an idle state. If so, control the monitoring device Y to light up a green light. If not, control the monitoring device Y to light up a red light.

[0099] In this embodiment, since the monitoring device is fixed, the parking space photographed by the monitoring device X is also fixed in the monitoring screen, and it is easy to identify the parking space that the monitoring device is responsible for through image recognition technology.

[0100] In this embodiment, the monitoring device adopts an integrated design of an image acquisition module and a parking space indicator module. The monitoring device is responsible for the parking space availability of the three parking spaces on the same side. When the parking space indicator module lights up green, it means that there are still vacant parking spaces in the three parking spaces that the monitoring device is responsible for. When the parking space indicator module lights up red, it means that the three parking spaces that the monitoring device is responsible for are all parked.

[0101] In this embodiment, the number of vehicles can be identified in the monitoring screen of the monitoring device X through image recognition technology; if the number of vehicles is equal to the number of parking spaces photographed by the monitoring device X, it means that the parking spaces are full, and the monitoring device Y is controlled to turn on a red light; if the number of vehicles is less than the number of parking spaces photographed by the monitoring device X, it means that the parking spaces are not full, and the monitoring device Y is controlled to turn on a green light.

[0102] In this embodiment, if the parking space indicator light module is a digital transistor that can display numbers, it can also display the number of vacant parking spaces.

[0103] like Figure 5 As shown, in one embodiment, a parking lot parking indicator light changing device is provided, which may specifically include:

[0104] A location determination module is used to obtain the signal strength of the vehicle signal received by all positioning devices respectively, and determine the location of the vehicle according to the obtained signal strength;

[0105] A speed determination module, used to determine the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot;

[0106] The image acquisition module is used to determine whether the driving speed of the vehicle is within a preset range, and if so, to acquire monitoring images of a preset number of monitoring devices around the location of the vehicle;

[0107] A device determination module is used to determine whether there is a monitoring picture of the vehicle in a parking state in the acquired monitoring picture, and if so, determine the monitoring device X corresponding to the monitoring picture of the vehicle in a parking state;

[0108] The lighting determination module is used to determine the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signal received by a preset number of monitoring devices around the location of the vehicle, and control the lighting state of the monitoring device Y according to the monitoring screen of the monitoring device X.

[0109] In this embodiment, each module of the parking lot parking indicator light changing device is the modularization of the method part of the present invention. For the specific explanation of each module, please refer to the corresponding content of the method part of the present invention, and the embodiment of the present invention will not be repeated here.

[0110] like Figure 6 As shown, in one embodiment, a parking lot parking space indicator light changing system is provided, which may specifically include: a control device and a plurality of monitoring devices connected to the control device;

[0111] The control device is used to execute the steps of the above parking lot parking space indicator light method;

[0112] The monitoring device includes an image acquisition module and a parking indicator light module;

[0113] The image acquisition module is used to obtain a monitoring picture of the parking situation of the parking space opposite to the image acquisition module;

[0114] The parking space indicator light module is used to display the vacancy status of the parking space on the same side of the parking space indicator light module.

[0115] In this embodiment, the monitoring device further includes a Bluetooth communication module for implementing a signal strength ranging technology.

[0116] A parking space indicator light changing system provided by an embodiment of the present invention obtains the signal strength of vehicle signals received by all positioning devices respectively, and determines the position of the vehicle according to the obtained signal strength; determines the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot; judges whether the driving speed of the vehicle is within a preset range, and if so, obtains the monitoring screens of a preset number of monitoring devices around the position of the vehicle; judges whether there is a monitoring screen of the vehicle in a parking state in the obtained monitoring screen, and if so, determines the monitoring device X corresponding to the monitoring screen of the vehicle in a parking state; if there is no picture of the vehicle in a parking state in the obtained monitoring screen, repeats the speed judgment step and the picture judgment step until there is a picture of the vehicle in a parking state in the obtained monitoring screen; determines the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signals received by the preset number of monitoring devices around the position of the vehicle, and controls the lighting state of the monitoring device Y according to the monitoring screen of the monitoring device X. In this way, after determining the monitoring device X corresponding to the monitoring screen of the vehicle in the parking state, the monitoring device Y corresponding to the parking space where the vehicle is parked is determined according to the signal strength of the vehicle signal received by the preset number of monitoring devices around the location of the vehicle, and the light status of the monitoring device Y is controlled according to the monitoring screen of the monitoring device X. There is no artificially established corresponding relationship between the monitoring device Y and the monitoring device X, but the monitoring device X can collect the monitoring screen of the parking space where the vehicle is parked, and the light status of the monitoring device Y can represent the parking space status of the vehicle. It is not necessary to artificially establish a corresponding relationship between the monitoring device on the opposite side of the parking space and the monitoring device on the same side of the parking space, which solves the problem that the monitoring device cannot correctly display the parking status of the parking space when no corresponding relationship is established.

[0117] Figure 7 FIG. 2 shows an internal structure diagram of a control device in an embodiment. Figure 7 As shown, the control device includes a processor, a memory, a network interface, an input device and a display screen connected through a system bus. Among them, the memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the control device stores an operating system and may also store a computer program. When the computer program is executed by the processor, the processor can implement a parking lot parking indicator light conversion method provided in an embodiment of the present invention. The internal memory may also store a computer program. When the computer program is executed by the processor, the processor can execute a parking lot parking indicator light conversion method provided in an embodiment of the present invention. The display screen of the control device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the control device may be a touch layer covering the display screen, or a button, trackball or touchpad provided on the housing of the control device, or an external keyboard, touchpad or mouse, etc.

[0118] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the scheme of the present invention, and does not constitute a limitation on the control device to which the scheme of the present invention is applied. The specific control device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0119] In one embodiment, a parking lot parking indicator light changing device provided by the embodiment of the present invention can be implemented in the form of a computer program. The computer program can be Figure 7 The memory of the control device can store various program modules that constitute the parking lot parking indicator light changing device, for example, Figure 5 The position determination module, speed determination module, picture acquisition module, device determination module and light determination module shown in the figure. The computer program composed of each program module enables the processor to execute the steps of a parking lot parking indicator light changing method of each embodiment of the present invention described in this specification.

[0120] For example, Figure 7 The control device shown can be Figure 5 The position determination module in the parking lot parking indicator light changing device shown executes step S101; the control device can execute step S102 through the speed determination module; the control device can execute step S103 through the picture acquisition module; the control device can execute step S104 through the device determination module; the control device can execute step S106 through the light determination module.

[0121] In one embodiment, a control device is provided, the control device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0122] S101, respectively obtaining the signal strength of the vehicle signal received by all positioning devices, and determining the location of the vehicle according to the obtained signal strength;

[0123] S102, determining the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot;

[0124] S103, determining whether the driving speed of the vehicle is within a preset range, and if so, obtaining monitoring images of a preset number of monitoring devices around the location of the vehicle;

[0125] S104, determining whether there is a monitoring picture of the vehicle in a parked state in the acquired monitoring pictures, and if so, determining the monitoring device X corresponding to the monitoring picture of the vehicle in a parked state;

[0126] S105, if the acquired monitoring picture does not contain a picture of the vehicle being parked, repeat S103-S104 until a picture of the vehicle being parked is found in the acquired monitoring picture;

[0127] S106, determining the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signal received by a preset number of monitoring devices around the location of the vehicle, and controlling the lighting state of the monitoring device Y according to the monitoring screen of the monitoring device X.

[0128] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the processor performs the following steps:

[0129] S101, respectively obtaining the signal strength of the vehicle signal received by all positioning devices, and determining the location of the vehicle according to the obtained signal strength;

[0130] S102, determining the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot;

[0131] S103, determining whether the driving speed of the vehicle is within a preset range, and if so, obtaining monitoring images of a preset number of monitoring devices around the location of the vehicle;

[0132] S104, determining whether there is a monitoring picture of the vehicle in a parked state in the acquired monitoring pictures, and if so, determining the monitoring device X corresponding to the monitoring picture of the vehicle in a parked state;

[0133] S105, if the acquired monitoring picture does not contain a picture of the vehicle being parked, repeat S103-S104 until a picture of the vehicle being parked is found in the acquired monitoring picture;

[0134] S106, determining the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signal received by a preset number of monitoring devices around the location of the vehicle, and controlling the lighting state of the monitoring device Y according to the monitoring screen of the monitoring device X.

[0135] It should be understood that, although each step in the flow chart of each embodiment of the present invention is shown in sequence according to the indication of the arrow, these steps are not necessarily performed in sequence according to the order indicated by the arrow. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be performed in other orders. Moreover, at least a portion of the steps in each embodiment may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these sub-steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0136] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0137] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0138] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A method for changing a parking space indicator light in a parking lot, characterized in that: The parking lot parking space indicator light changing method comprises: S101, respectively obtaining the signal strength of the vehicle signal received by all positioning devices, and determining the location of the vehicle according to the obtained signal strength; S102, determining the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot; S103, determining whether the driving speed of the vehicle is within a preset range, and if so, obtaining monitoring images of a preset number of monitoring devices around the location of the vehicle; S104, determining whether there is a monitoring picture of the vehicle in a parked state in the acquired monitoring pictures, and if so, determining the monitoring device X corresponding to the monitoring picture of the vehicle in a parked state; S105, if the acquired monitoring picture does not contain a picture of the vehicle being parked, repeat S103-S104 until a picture of the vehicle being parked is found in the acquired monitoring picture; S106, determining the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signal received by a preset number of monitoring devices around the location where the vehicle is located, and controlling the lighting state of the monitoring device Y according to the monitoring screen of the monitoring device X; The step of obtaining monitoring images of a preset number of monitoring devices around the location of the vehicle includes: The signal strengths of vehicle signals received by all monitoring devices are obtained respectively, and the obtained signal strengths are sorted from large to small to obtain a signal strength sequence; Determine the monitoring devices corresponding to the preset number of signal strengths at the front of the signal strength sequence as the preset number of monitoring devices around the location where the vehicle is located; Obtain monitoring images of a preset number of monitoring devices around the location of the vehicle; Determining the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signal received by a preset number of monitoring devices around the location where the vehicle is located includes: In the signal strength sequence, a signal strength greater than the signal strength of the vehicle signal received by the monitoring device X is determined, and the monitoring device corresponding to the determined signal strength is recorded as the monitoring device to be determined; Determine whether the number of the monitoring devices to be determined is 1, and if so, the monitoring device to be determined is determined to be monitoring device Y; If the number of monitoring devices to be determined is not 1, then a curve a of the change in signal strength of the vehicle signal received by the monitoring device X over time is obtained; Obtain a curve of the signal strength of the vehicle signal received by the to-be-determined monitoring device changing over time, recorded as the to-be-determined curve; Calculate the similarity between each curve to be determined and the change curve a; The to-be-determined monitoring device corresponding to the to-be-determined curve with the highest similarity is determined as the monitoring device Y corresponding to the parking space where the vehicle is parked; Control the lighting status of monitoring device Y according to the monitoring screen of monitoring device X, including: Identify all parking spaces in the monitoring screen of monitoring device X using image recognition technology; Determine whether there is a parking space in an idle state. If so, control the monitoring device Y to light up a green light. If not, control the monitoring device Y to light up a red light.

2. The parking lot parking indicator light changing method according to claim 1, characterized in that: The step of respectively obtaining the signal strengths of vehicle signals received by all positioning devices and determining the location of the vehicle according to the obtained signal strengths includes: Respectively obtain the signal strength of the vehicle signal received by all positioning devices; For each acquired signal strength, determine whether the acquired signal strength is greater than a preset value, and if so, determine the distance between the positioning device and the vehicle corresponding to the acquired signal strength according to the relationship between the signal strength and the distance; According to the signal strength from large to small, select at least 3 distances corresponding to the signal strength and use the three-point positioning method to determine the location of the vehicle.

3. The parking lot parking indicator light changing method according to claim 1, characterized in that: The method of determining the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot includes: Get the road map of the parking lot and get the internal route of the parking lot; Determine the distance s traveled by the vehicle according to the moving distance of the position of the vehicle on the internal route of the parking lot at every first preset time; The vehicle's speed is obtained from s / t; Wherein, t is the first preset time.

4. The parking lot parking indicator light changing method according to claim 1, characterized in that: The determining whether the driving speed of the vehicle is within a preset range, and if so, obtaining monitoring images of a preset number of monitoring devices around the location of the vehicle, includes: Determine whether the vehicle's driving speed is within a preset range, and if so, determine whether the vehicle's driving speed drops to 0, and if so, determine whether the vehicle's driving speed is greater than 0 after a second preset time, and if so, do not obtain monitoring images of a preset number of monitoring devices around the location of the vehicle; If it is determined that the driving speed of the vehicle is less than or equal to 0 after the second preset time has passed, acquiring monitoring images of a preset number of monitoring devices around the location of the vehicle; If the driving speed of the vehicle does not drop to 0, the monitoring images of a preset number of monitoring devices around the location of the vehicle are not obtained.

5. The parking lot parking indicator light changing method according to claim 1, characterized in that: The determining whether there is a monitoring picture of the vehicle in a parking state in the acquired monitoring picture includes: For each acquired surveillance image, the vacant parking spaces are identified through image recognition technology; Whether there is a monitoring picture of a vehicle in a parking state in the acquired monitoring picture is determined according to whether there is a vehicle entering an empty parking space and parking in the empty parking space.

6. A parking lot indicator light changing device, characterized in that: The parking lot parking indicator light changing device comprises: A location determination module is used to obtain the signal strength of the vehicle signal received by all positioning devices respectively, and determine the location of the vehicle according to the obtained signal strength; A speed determination module, used to determine the driving speed of the vehicle according to the change of the position of the vehicle and the road map of the parking lot; The image acquisition module is used to determine whether the driving speed of the vehicle is within a preset range, and if so, to acquire monitoring images of a preset number of monitoring devices around the location of the vehicle; A device determination module is used to determine whether there is a monitoring picture of the vehicle in a parking state in the acquired monitoring picture, and if so, determine the monitoring device X corresponding to the monitoring picture of the vehicle in a parking state; A lighting determination module is used to determine the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signal received by a preset number of monitoring devices around the location where the vehicle is located, and control the lighting state of the monitoring device Y according to the monitoring screen of the monitoring device X; The step of obtaining monitoring images of a preset number of monitoring devices around the location of the vehicle includes: The signal strengths of vehicle signals received by all monitoring devices are obtained respectively, and the obtained signal strengths are sorted from large to small to obtain a signal strength sequence; Determine the monitoring devices corresponding to the preset number of signal strengths at the front of the signal strength sequence as the preset number of monitoring devices around the location where the vehicle is located; Obtain monitoring images of a preset number of monitoring devices around the location of the vehicle; Determining the monitoring device Y corresponding to the parking space where the vehicle is parked according to the signal strength of the vehicle signal received by a preset number of monitoring devices around the location where the vehicle is located includes: In the signal strength sequence, a signal strength greater than the signal strength of the vehicle signal received by the monitoring device X is determined, and the monitoring device corresponding to the determined signal strength is recorded as the monitoring device to be determined; Determine whether the number of the monitoring devices to be determined is 1, and if so, the monitoring device to be determined is determined to be monitoring device Y; If the number of monitoring devices to be determined is not 1, then a curve a of the change in signal strength of the vehicle signal received by the monitoring device X over time is obtained; Obtain a curve of the signal strength of the vehicle signal received by the to-be-determined monitoring device changing over time, recorded as the to-be-determined curve; Calculate the similarity between each curve to be determined and the change curve a; The to-be-determined monitoring device corresponding to the to-be-determined curve with the highest similarity is determined as the monitoring device Y corresponding to the parking space where the vehicle is parked; Control the lighting status of monitoring device Y according to the monitoring screen of monitoring device X, including: Identify all parking spaces in the monitoring screen of monitoring device X using image recognition technology; Determine whether there is a parking space in an idle state. If so, control the monitoring device Y to light up a green light. If not, control the monitoring device Y to light up a red light.

7. A parking lot indicator light changing system, characterized in that: The parking lot parking indicator light changing system comprises: a control device and a plurality of monitoring devices connected to the control device; The control device is used to execute the steps of the parking lot parking space indicator light method according to any one of claims 1 to 5; The monitoring device includes an image acquisition module and a parking indicator light module; The image acquisition module is used to obtain a monitoring picture of the parking situation of the parking space opposite to the image acquisition module; The parking space indicator light module is used to display the vacancy status of the parking space on the same side of the parking space indicator light module.

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