Underground parking lot vehicle guidance method and system

Abstract

The present invention provides a method for guiding vehicles in an underground parking lot, comprising the following steps: positioning sensors are arranged at intervals along the driving lanes of the underground parking lot, the positioning sensors are used to identify the identity of the vehicle and whether the vehicle passes through the positioning sensors; an electronic map of the underground parking lot is drawn, the electronic map contains the coordinate position of the positioning sensor; the server of the underground parking lot detects the vacant parking spaces and allocates parking spaces for vehicles entering the underground parking lot; the positioning sensor collects the vehicle positioning information and sends it to the server; the server calculates the vehicle position according to the received vehicle positioning information, and guides the vehicle to the allocated parking space. In the present invention, the server can accurately calculate the position of the vehicle in the underground parking lot according to the positioning signal collected by the positioning sensor, and accurately navigate.

Description

Technical Field

[0001] The present application relates to the field of smart park technology, and in particular to a method and system for guiding vehicles in an underground parking lot. Background Art

[0002] Due to the continuous development of automobile industry technology, the price of cars has become more and more affordable, and cars have become more and more popular. In order to facilitate parking, a large number of underground parking lots have been built in residential areas, office parks, and commercial activity centers. Due to the weak GPS signal of underground parking lots, the existing satellite positioning system cannot be applied to underground parking lots. In the prior art, in order to facilitate users to find parking spaces in underground parking lots, indicator lights are usually set on each parking space, and the color of the indicator light indicates whether the parking space is free. However, in this method, car owners still need to drive around in the parking lot to find parking spaces, and it is still not easy to find space parking spaces, especially when there are tight parking spaces in the parking lot and heavy traffic. With the continuous increase in the number of cars in the city, parking in underground parking lots is becoming more and more difficult. How to accurately guide the parking of cars in underground parking lots has become a problem that technicians urgently need to solve. Summary of the invention

[0003] In view of the above problems, the present application provides an underground parking lot vehicle guidance method and system, which are used to solve the technical problem of poor parking guidance accuracy in the above-mentioned underground parking lot.

[0004] To achieve the above object, the inventor provides a method for guiding vehicles in an underground parking lot, comprising the following steps:

[0005] Positioning sensors are arranged at intervals along the driving lanes of the underground parking lot, and the positioning sensors are used to identify the identity of a vehicle and whether a vehicle passes through the positioning sensors;

[0006] Drawing an electronic map of the underground parking lot, wherein the electronic map includes the coordinate position of the positioning sensor;

[0007] The server of the underground parking lot detects an empty parking space and allocates a parking space to a vehicle entering the underground parking lot;

[0008] The positioning sensor collects vehicle positioning information and sends it to the server;

[0009] The server calculates the vehicle position according to the received vehicle positioning information, and guides the vehicle to the allocated parking space through a road sign display device, wherein the road sign display devices are arranged at intervals on the driving lane.

[0010] In some technical solutions, the positioning sensor includes a wireless signal collector and an infrared sensor, the wireless signal collector is used to collect wireless signals; the infrared sensor includes two or more sets of infrared transmitters and infrared receivers arranged at intervals, the infrared transmitters and the infrared receivers are relatively arranged on both sides of the lane, and the infrared sensor is used to detect the position of the vehicle;

[0011] When a vehicle enters an underground parking lot, the vehicle image information is collected and a wireless signal generator is issued to the vehicle. The wireless signal generated by the wireless signal generator contains a feature code and when the wireless signal generator and the wireless signal collector are less than a preset distance, the wireless signal can be collected by the wireless signal collector;

[0012] The server calculates the vehicle position according to the received vehicle positioning information, including the following steps:

[0013] The server determines the identity of the vehicle based on the feature code in the vehicle positioning information;

[0014] The server determines whether there are more than two groups of infrared sensors in the positioning sensor whose infrared emitters and infrared receivers are blocked, then determines that a vehicle is detected, and locates the position of the vehicle according to the position of the positioning sensor in the underground parking lot.

[0015] In some embodiments, the interval between two adjacent groups of infrared sensors in the positioning sensor is greater than or equal to 1 meter and less than or equal to 3 meters to improve the accuracy of vehicle position detection.

[0016] In some embodiments, the driving state of the vehicle can also be detected by the positioning sensor and uploaded to the server in real time, wherein the driving state of the vehicle may include forward, backward and stopped. Among them, it can be determined whether the vehicle is moving forward or backward according to the order in which the two adjacent groups of infrared sensors in the positioning sensor detect the vehicle. For example, when the infrared sensor at the front detects the vehicle before the infrared sensor at the rear, it is considered that the vehicle is in the forward state; otherwise, it is considered that the vehicle is in the backward state.

[0017] And when the two groups of infrared sensors in the positioning sensor continuously detect the vehicle for more than a preset time (such as 1 minute or 30 seconds, etc.), it is considered that the vehicle is in a stopped state.

[0018] In some technical solutions, the steps are also included:

[0019] When a vehicle enters an underground parking lot, the server obtains the destination of the person in the vehicle;

[0020] The server calculates the vacant parking spaces in the underground parking lot, counts the positions and number of vehicles that have entered the parking lot but have not entered the parking spaces, and predicts the vacant parking spaces in the underground parking lot based on the vacant parking spaces and the positions and number of vehicles that have entered the parking lot but have not entered the parking spaces;

[0021] The server guides the vehicle to a parking space close to the destination according to the prediction result.

[0022] In some technical solutions, the wireless signal collector includes any one of a Bluetooth signal collector, a WIFI signal collector, and an NFC signal collector;

[0023] The road sign display device is connected to the nearest positioning sensor;

[0024] The road sign display device receives the guidance route map of different vehicles generated by the server, and receives the feature code detected by the positioning sensor;

[0025] The road sign display device displays a guidance route map corresponding to the vehicle according to the feature code, thereby guiding the vehicle to the allocated parking space.

[0026] In some technical solutions, an electromagnetic suction cup is provided at the bottom of the wireless signal generator;

[0027] A mechanical arm is provided at the entrance of the underground parking lot. The mechanical arm is used to extend the wireless signal generator to the bottom of the vehicle when the vehicle enters the underground parking lot, and to make the electromagnetic suction cup conductive to generate magnetic force to be magnetically attracted to the bottom of the vehicle.

[0028] In some technical solutions, a collection device is provided at the exit of the underground parking lot, and the collection device is used to send a control signal to power off the electromagnetic suction cup and cause it to fall off and be recovered when a vehicle passes through the exit.

[0029] In some technical solutions, the steps are also included:

[0030] The electronic map of the underground parking lot is sent to a cloud server, and the cloud server tracks the position of the vehicle according to the current navigation. When the vehicle drives to the entrance of the underground parking lot, the current navigation electronic map is automatically switched to the electronic map of the underground parking lot.

[0031] In order to solve the above technical problems, the present invention also provides another technical solution:

[0032] A vehicle guidance system for an underground parking lot, comprising:

[0033] Positioning sensors are arranged at intervals along the lanes of the underground parking lot to identify the identity of a vehicle and whether a vehicle has passed by, and to send the collected vehicle positioning information to the server;

[0034] The server stores an electronic map of the underground parking lot, wherein the electronic map includes the coordinate position of the positioning sensor; the server is used to detect vacant parking spaces, allocate parking spaces to vehicles entering the underground parking lot, calculate the vehicle position based on the received vehicle positioning information, and guide the vehicle to the allocated parking space.

[0035] In some technical solutions, the positioning sensor includes a wireless signal collector and an infrared sensor, the wireless signal collector is used to collect wireless signals; the infrared sensor includes two or more sets of infrared transmitters and infrared receivers arranged at intervals, the infrared transmitters and the infrared receivers are relatively arranged on both sides of the lane, and the infrared sensor is used to detect the position of the vehicle;

[0036] When a vehicle enters an underground parking lot, the vehicle image information is collected and a wireless signal generator is issued to the vehicle. The wireless signal generated by the wireless signal generator contains a feature code and when the wireless signal generator and the wireless signal collector are less than a preset distance, the wireless signal can be collected by the wireless signal collector;

[0037] The server determines the identity of the vehicle based on the feature code in the vehicle positioning information;

[0038] The server determines whether there are more than two groups of infrared sensors in the positioning sensor whose infrared emitters and infrared receivers are blocked, then determines that a vehicle is detected, and locates the position of the vehicle according to the position of the positioning sensor in the underground parking lot.

[0039] Different from the prior art, the above technical solution sets positioning sensors at intervals along the driving lanes of the underground parking lot. The server calculates the vehicle position based on the received vehicle positioning information and guides the vehicle to the assigned parking space. Therefore, the server can accurately calculate the position of the vehicle in the underground parking lot based on the positioning signal collected by the positioning sensor and accurately navigate.

[0040] In some embodiments, the positioning sensor includes a wireless signal collector and an infrared sensor, the wireless signal collector is used to collect wireless signals; the infrared sensor includes two or more sets of infrared transmitters and infrared receivers arranged at intervals. In these technical solutions, through such a design, the server can determine the identity of the vehicle according to the feature code in the vehicle positioning information, and can accurately detect the position of the vehicle by detecting whether the infrared transmitters and infrared receivers of the two or more sets of infrared sensors are blocked, avoiding interference caused by pedestrians and other objects other than vehicles blocking the infrared sensor.

[0041] The above-mentioned records related to the invention content are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation mode and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.

[0043] In the drawings of the specification:

[0044] Figure 1 A flowchart of the underground parking lot vehicle guidance method according to the specific implementation method;

[0045] Figure 2 This is a schematic diagram of the installation distribution of the positioning sensor when in use according to the specific implementation method;

[0046] Figure 3 A flowchart of a specific implementation method for calculating a vehicle position based on vehicle positioning information;

[0047] Figure 4 A module block diagram of the positioning sensor described in the specific implementation method;

[0048] Figure 5 It is a module block diagram of the underground parking lot vehicle guidance system described in the specific implementation method;

[0049] The reference numerals in the above drawings are described as follows:

[0050] 401. Wireless signal generator;

[0051] 402, electromagnetic chuck;

[0052] 501, positioning sensor;

[0053] 502, server;

[0054] 503. Road sign display device; DETAILED DESCRIPTION

[0055] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0056] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0057] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0058] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0059] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0060] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0061] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0062] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0063] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0064] Since GPS signals cannot penetrate buildings, there is no GPS signal or the GPS signal is weak in underground parking lots. Vehicles cannot be located and navigated by common GPS in underground parking lots, which leads to parking difficulties. Figures 1 to 5 This embodiment provides a method for guiding vehicles in an underground parking lot. The method can be applied to various underground parking lots such as residential areas, office parks, and commercial activity centers, and is used to allocate parking spaces for vehicles entering the underground parking lot, locate and guide the vehicles, so that the vehicles can quickly find ideal parking spaces, thereby improving the parking efficiency of the underground parking lot.

[0065] like Figure 1 As shown, in this embodiment, the underground parking lot vehicle guidance method includes the following steps:

[0066] S101, positioning sensors are arranged at intervals along the lanes of the underground parking lot, wherein the positioning sensors are used to identify the identity of a vehicle and whether a vehicle passes through the positioning sensors;

[0067] S102, drawing an electronic map of the underground parking lot, wherein the electronic map includes the coordinate position of the positioning sensor;

[0068] S103, the server of the underground parking lot detects an empty parking space and allocates a parking space for a vehicle entering the underground parking lot;

[0069] S104, the positioning sensor collects vehicle positioning information and sends it to the server;

[0070] S105. The server calculates the vehicle position according to the received vehicle positioning information, and guides the vehicle to the allocated parking space through a road sign display device, wherein the road sign display devices are arranged at intervals on the driving lane.

[0071] In step S101, positioning sensors are distributed at intervals along the lanes of the underground parking lot, so when a vehicle is driving in the underground parking lot, it can be identified by the positioning sensors. The positioning sensors can not only identify the vehicle but also the position of the vehicle.

[0072] In step S102, the electronic map of the underground parking lot can be drawn by data modeling based on the specific size, shape, entrances and exits, parking spaces, and lanes of the underground parking lot. The coordinates of each positioning sensor are marked on the electronic map, so when a certain positioning sensor detects a vehicle, the location of the vehicle can be calculated based on the coordinates of the positioning sensor.

[0073] In step S103, when the vehicle drives to the entrance of the address parking lot, the vehicle can be identified by the license plate recognition camera installed at the entrance, and the vehicle can be photographed. The server of the underground parking lot detects whether there are any vacant parking spaces in the parking lot. If there are vacant parking spaces, a parking space is allocated to the vehicle; if there are no vacant parking spaces, the vehicle is not allowed to enter the parking lot, and is notified that the parking lot is full.

[0074] In step S104, when the vehicle is driving in the underground parking lot, the positioning sensor installed beside the driving lane collects the vehicle positioning information and sends it to the server; the vehicle positioning information sent by the positioning sensor includes the identity information of the vehicle detected by the positioning sensor and whether a vehicle is detected passing near the positioning sensor. The identity information of the vehicle may include the image of the vehicle, the wireless signal accompanying the vehicle, etc. The wireless signal may be the wireless signal of the owner's mobile phone, or the wireless signal generated by a wireless generator temporarily installed on the vehicle. When the vehicle enters the underground parking lot, the wireless generator is bound to the vehicle, so the identity of the vehicle can be identified by identifying the wireless signal.

[0075] In the above embodiment, positioning sensors are arranged at intervals along the driving lanes of the underground parking lot. The server calculates the vehicle position based on the received vehicle positioning information and guides the vehicle to the allocated parking space. Therefore, the server can accurately calculate the position of the vehicle in the underground parking lot based on the positioning signal collected by the positioning sensor and accurately navigate.

[0076] like Figure 2 As shown, in some embodiments, the positioning sensor includes a wireless signal collector and an infrared sensor, the wireless signal collector is used to collect wireless signals; the infrared sensor includes two or more groups of infrared transmitters and infrared receivers arranged at intervals, the infrared transmitters and the infrared receivers are relatively arranged on both sides of the lane, and the infrared sensor is used to detect the position of the vehicle.

[0077] Among them, the infrared transmitter and infrared receiver in each group of infrared sensors are arranged in pairs, and the infrared transmitter and infrared receiver are arranged opposite to each other along the two sides of the lane. When there is no vehicle or other object blocking between the infrared transmitter and the infrared receiver, the infrared rays generated by the infrared transmitter will be received by the infrared receiver; when a vehicle passes between the infrared transmitter and the infrared receiver, the infrared rays generated by the infrared transmitter will be blocked, and the infrared receiver will not be able to receive the infrared signal. Therefore, it is possible to detect whether a vehicle passes near the positioning sensor based on the output signal of the infrared receiver.

[0078] When a vehicle enters an underground parking lot, the vehicle image information is collected and a wireless signal generator is issued to the vehicle. The wireless signal generated by the wireless signal generator contains a feature code, and when the wireless signal generator and the wireless signal collector are less than a preset distance, the wireless signal can be collected by the wireless signal collector. When the vehicle enters the address parking lot, the server binds the wireless signal generator issued to the vehicle with the vehicle, so the vehicle and identity can be identified by detecting the wireless signal generated by the wireless signal generator. In some embodiments, the wireless signal collector includes any one of a Bluetooth signal collector, a WIFI signal collector, and an NFC signal collector.

[0079] In one embodiment, the road sign display device is connected to the nearest positioning sensor, that is, the road sign display device is connected to the positioning sensor closest to it;

[0080] The road sign display device receives the guidance route map of different vehicles generated by the server, and receives the feature code detected by the positioning sensor;

[0081] The road sign display device displays a guidance route map corresponding to the vehicle according to the feature code, thereby guiding the vehicle to the allocated parking space.

[0082] The road sign display device is arranged at intervals on the lane, especially at the location where the lane is bifurcated or turned. The road sign display device can be a LED display screen or a projection display; the vehicle's driving instructions (such as going straight, turning left, etc.) can be projected in front of the vehicle through the projection display.

[0083] In this embodiment, the road sign display device is connected to the nearby positioning sensor, so that when a vehicle passes by the road sign display device, the identity of the vehicle can be detected by the positioning sensor, so the road sign display device can retrieve the guidance route map of the corresponding vehicle and display it, thereby guiding the vehicle to the assigned parking space.

[0084] like Figure 3 As shown, the server calculates the vehicle position according to the received vehicle positioning information, including the steps of:

[0085] S301, the server determines the identity of the vehicle according to the feature code in the vehicle positioning information;

[0086] S302. The server determines whether there are more than two groups of infrared sensors in the positioning sensor whose infrared emitters and infrared receivers are blocked, then determines that a vehicle is detected, and locates the position of the vehicle according to the position of the positioning sensor in the underground parking lot.

[0087] When the distance between the wireless signal generator and the wireless signal collector is less than 1-5 meters, the wireless signal can be collected by the wireless signal collector. When using different types of wireless signal generators, the preset distance can also be appropriately adjusted to correspond to the transmission distance of the wireless signal.

[0088] In this embodiment, the infrared sensor includes two or more groups of infrared transmitters and infrared receivers arranged at intervals. In some embodiments, the interval between two adjacent groups of infrared sensors in the positioning sensor is greater than or equal to 1 meter and less than or equal to 3 meters to improve the accuracy of vehicle position detection.

[0089] In addition to vehicles driving in the underground parking lot, there will also be some pedestrians passing by. Therefore, the positioning sensor includes two or more groups of infrared sensors set at intervals, and the interval between two adjacent groups of infrared sensors is greater than or equal to 1 meter and less than or equal to 3 meters. Only when more than two groups of infrared sensors detect signals at the same time, it is considered that a vehicle has passed. Since pedestrians usually only block one infrared sensor at the same time when passing by the positioning sensor, and pedestrians do not carry the above-mentioned wireless signal generator, the interference caused by pedestrian movement can be effectively filtered out; and the length of the vehicle is usually more than 3 meters, so when the vehicle passes by the positioning sensor, at least two groups of infrared sensors will be blocked. Therefore, the positioning sensor can filter out the interference caused by pedestrian movement and improve the detection accuracy of the positioning sensor.

[0090] In some embodiments, the underground parking lot vehicle guidance method further comprises the steps of:

[0091] When a vehicle enters an underground parking lot, the server obtains the destination of the person in the vehicle;

[0092] The server calculates the vacant parking spaces in the underground parking lot, counts the positions and number of vehicles that have entered the parking lot but have not entered the parking spaces, and predicts the vacant parking spaces in the underground parking lot based on the vacant parking spaces and the positions and number of vehicles that have entered the parking lot but have not entered the parking spaces;

[0093] The server guides the vehicle to a parking space close to the destination according to the prediction result.

[0094] In this embodiment, when allocating parking spaces to vehicles, not only the vacant parking spaces in the underground parking lot are calculated, but also the number of vehicles that have entered but not entered the parking spaces is counted, and the positions of these vehicles are detected by positioning sensors, and the parking positions of these vehicles that have entered but not entered the parking spaces are predicted, and finally, the vacant parking spaces are allocated to the occupants of the vehicle based on their destinations, so that the allocated parking spaces are closest to their destinations.

[0095] like Figure 4As shown, in some embodiments, an electromagnetic suction cup 402 is disposed at the bottom of the wireless signal generator 401; the electromagnetic suction cup 402 generates magnetism when conducting electricity, so that the wireless signal generator 401 is adsorbed on the vehicle by suction.

[0096] A mechanical arm is provided at the entrance of the underground parking lot. The mechanical arm is used to extend the wireless signal generator to the bottom of the vehicle when the vehicle enters the underground parking lot, and to make the electromagnetic suction cup conductive to generate magnetic force to be magnetically attracted to the bottom of the vehicle.

[0097] In some embodiments, a collecting device is provided at the exit of the underground parking lot, and the collecting device is used to send a control signal to power off the electromagnetic suction cup and cause it to fall off and be recovered when a vehicle passes through the exit.

[0098] In the above embodiment, the wireless signal generator 401 can be automatically adsorbed to the bottom of the vehicle through the robotic arm and the electromagnetic suction cup 402 when the vehicle enters the site, and when the vehicle leaves the site, the electromagnetic suction cup 402 can be powered off and recovered by the collection device, and the recovered wireless signal generator 401 can be recycled.

[0099] In some embodiments, the steps are further included:

[0100] The electronic map of the underground parking lot is sent to a cloud server, and the cloud server tracks the position of the vehicle according to the current navigation. When the vehicle drives to the entrance of the underground parking lot, the current navigation electronic map is automatically switched to the electronic map of the underground parking lot.

[0101] like Figure 5 To solve the above technical problems, the present invention also provides another implementation method:

[0102] A vehicle guidance system for an underground parking lot, comprising:

[0103] Positioning sensors 501 are arranged at intervals along the lanes of the underground parking lot to identify the identity of a vehicle and whether a vehicle has passed by, and to send the collected vehicle positioning information to the server;

[0104] The server 502 stores an electronic map of the underground parking lot, wherein the electronic map includes the coordinates of the positioning sensor; the server is used to detect vacant parking spaces and allocate parking spaces to vehicles entering the underground parking lot;

[0105] Road sign display devices 503 are arranged at intervals on the lane to guide the vehicle to the allocated parking space. The road sign display devices are arranged at intervals on the lane, especially at the location where the lane forks or turns. The road sign display device can be a LED display screen or a projection display; the projection display can project the vehicle's driving instructions (such as going straight, turning left, etc.) in front of the vehicle.

[0106] In this embodiment, the road sign display device is connected to the nearby positioning sensor, so that when a vehicle passes by the road sign display device, the identity of the vehicle can be detected by the positioning sensor, so the road sign display device can retrieve the guidance route map of the corresponding vehicle and display it, thereby guiding the vehicle to the assigned parking space.

[0107] And calculating the vehicle position according to the received vehicle positioning information, and guiding the vehicle to the allocated parking space.

[0108] In the above embodiment, positioning sensors are arranged at intervals along the driving lanes of the underground parking lot. The server calculates the vehicle position based on the received vehicle positioning information and guides the vehicle to the allocated parking space. Therefore, the server can accurately calculate the position of the vehicle in the underground parking lot based on the positioning signal collected by the positioning sensor and accurately navigate.

[0109] In some embodiments, the positioning sensor includes a wireless signal collector and an infrared sensor, wherein the wireless signal collector is used to collect wireless signals; the infrared sensor includes two or more sets of infrared transmitters and infrared receivers arranged at intervals, wherein the infrared transmitters and the infrared receivers are arranged on both sides of the lane relatively, and the infrared sensor is used to detect the position of the vehicle;

[0110] When a vehicle enters an underground parking lot, the vehicle image information is collected and a wireless signal generator is issued to the vehicle. The wireless signal generated by the wireless signal generator contains a feature code and when the wireless signal generator and the wireless signal collector are less than a preset distance, the wireless signal can be collected by the wireless signal collector;

[0111] The server determines the identity of the vehicle based on the feature code in the vehicle positioning information;

[0112] The server determines whether there are more than two groups of infrared sensors in the positioning sensor whose infrared emitters and infrared receivers are blocked, then determines that a vehicle is detected, and locates the position of the vehicle according to the position of the positioning sensor in the underground parking lot.

[0113] In this embodiment, the infrared sensor includes two or more groups of infrared transmitters and infrared receivers arranged at intervals. In some embodiments, the interval between two adjacent groups of infrared sensors in the positioning sensor is greater than or equal to 1 meter and less than or equal to 3 meters to improve the accuracy of vehicle position detection.

[0114] In addition to vehicles driving in the underground parking lot, there will also be some pedestrians passing by. Therefore, the positioning sensor includes two or more groups of infrared sensors set at intervals, and the interval between two adjacent groups of infrared sensors is greater than or equal to 1 meter and less than or equal to 3 meters. Only when more than two groups of infrared sensors detect signals at the same time, it is considered that a vehicle has passed. Since pedestrians usually only block one infrared sensor at the same time when passing by the positioning sensor, and pedestrians do not carry the above-mentioned wireless signal generator, the interference caused by pedestrian movement can be effectively filtered out; and the length of the vehicle is usually more than 3 meters, so when the vehicle passes by the positioning sensor, at least two groups of infrared sensors will be blocked. Therefore, the positioning sensor can filter out the interference caused by pedestrian movement and improve the detection accuracy of the positioning sensor.

[0115] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A method for guiding vehicles in an underground parking lot, characterized in that: The following steps are involved: Positioning sensors are arranged at intervals along the driving lanes of the underground parking lot, and the positioning sensors are used to identify the identity of a vehicle and whether a vehicle passes through the positioning sensors; Drawing an electronic map of the underground parking lot, wherein the electronic map includes the coordinate position of the positioning sensor; The server of the underground parking lot detects an empty parking space and allocates a parking space to a vehicle entering the underground parking lot; The positioning sensor collects vehicle positioning information and sends it to the server; The server calculates the vehicle position according to the received vehicle positioning information, and guides the vehicle to the allocated parking space through a road sign display device, wherein the road sign display devices are arranged at intervals on the driving lane; The positioning sensor includes a wireless signal collector and an infrared sensor, the wireless signal collector is used to collect wireless signals; the infrared sensor includes two or more groups of infrared transmitters and infrared receivers arranged at intervals, the infrared transmitters and the infrared receivers are relatively arranged on both sides of the lane, and the infrared sensor is used to detect the position of the vehicle; the interval between two adjacent groups of infrared sensors in the positioning sensor is greater than or equal to 1 meter and less than or equal to 3 meters, filtering out the interference of pedestrian movement to improve the accuracy of vehicle position detection; When a vehicle enters an underground parking lot, the vehicle image information is collected and a wireless signal generator is issued to the vehicle. The wireless signal generated by the wireless signal generator contains a feature code and when the wireless signal generator and the wireless signal collector are less than a preset distance, the wireless signal can be collected by the wireless signal collector; The server calculates the vehicle position according to the received vehicle positioning information, including the following steps: The server determines the identity of the vehicle based on the feature code in the vehicle positioning information; The server determines whether the infrared emitters and infrared receivers of two or more infrared sensors in the positioning sensor are blocked, then determines that a vehicle is detected, and locates the position of the vehicle according to the position of the positioning sensor in the underground parking lot; The wireless signal collector includes any one of a Bluetooth signal collector, a WIFI signal collector, and an NFC signal collector; The road sign display device is connected to the nearest positioning sensor; The road sign display device receives the guidance route map of different vehicles generated by the server, and receives the feature code detected by the positioning sensor; The road sign display device displays a guidance route map corresponding to the vehicle according to the feature code, thereby guiding the vehicle to the assigned parking space; When a vehicle passes by a road sign display device, the identity of the vehicle is detected by a positioning sensor, and the road sign display device retrieves and displays the guidance route map corresponding to the vehicle; the road sign display device is a projection display, and the vehicle's driving instructions are projected in front of the vehicle through the projection display; An electromagnetic suction cup is provided at the bottom of the wireless signal generator; A mechanical arm is provided at the entrance of the underground parking lot, and the mechanical arm is used to extend the wireless signal generator to the bottom of the vehicle when the vehicle enters the underground parking lot, and make the electromagnetic suction cup conductive to generate magnetic force to be magnetically attracted to the bottom of the vehicle; A collecting device is provided at the exit of the underground parking lot. The collecting device is used to send a control signal to disconnect the power to the electromagnetic suction cup and cause it to fall off and be recovered when a vehicle passes through the exit.

2. The underground parking lot vehicle guidance method according to claim 1, characterized in that: Also includes the steps: When a vehicle enters an underground parking lot, the server obtains the destination of the person in the vehicle; The server calculates the vacant parking spaces in the underground parking lot, counts the positions and number of vehicles that have entered the parking lot but have not entered the parking spaces, and predicts the vacant parking spaces in the underground parking lot based on the vacant parking spaces and the positions and number of vehicles that have entered the parking lot but have not entered the parking spaces; The server guides the vehicle to a parking space close to the destination according to the prediction result.

3. The underground parking lot vehicle guidance method according to claim 1, characterized in that: Also includes the steps: The electronic map of the underground parking lot is sent to a cloud server, and the cloud server tracks the position of the vehicle according to the current navigation. When the vehicle drives to the entrance of the underground parking lot, the current navigation electronic map is automatically switched to the electronic map of the underground parking lot.

4. An underground parking lot vehicle guidance system, characterized in that: include: Positioning sensors are arranged at intervals along the lanes of the underground parking lot to identify the identity of a vehicle and whether a vehicle has passed by, and to send the collected vehicle positioning information to a server; A server storing an electronic map of the underground parking lot, wherein the electronic map includes the coordinate position of the positioning sensor; The server is used to detect vacant parking spaces, allocate parking spaces to vehicles entering the underground parking lot, and calculate the vehicle position based on the received vehicle positioning information; Road sign display devices are arranged at intervals on the lanes to guide the vehicles to the allocated parking spaces; The positioning sensor includes a wireless signal collector and an infrared sensor, wherein the wireless signal collector is used to collect wireless signals; the infrared sensor includes two or more groups of infrared transmitters and infrared receivers arranged at intervals, wherein the infrared transmitters and the infrared receivers are arranged relatively on both sides of the lane, and the infrared sensor is used to detect the position of the vehicle; the interval between two adjacent groups of the infrared sensors in the positioning sensor is greater than or equal to 1 meter and less than or equal to 3 meters, so as to filter out the interference caused by the movement of pedestrians, so as to improve the accuracy of vehicle position detection; When a vehicle enters an underground parking lot, the vehicle image information is collected and a wireless signal generator is issued to the vehicle. The wireless signal generated by the wireless signal generator contains a feature code and when the wireless signal generator and the wireless signal collector are less than a preset distance, the wireless signal can be collected by the wireless signal collector; The server calculates the vehicle position according to the received vehicle positioning information, including the following steps: The server determines the identity of the vehicle based on the feature code in the vehicle positioning information; The server determines whether there are two or more groups of infrared sensors in the positioning sensor whose infrared emitters and infrared receivers are blocked, then determines that a vehicle is detected, and locates the position of the vehicle according to the position of the positioning sensor in the underground parking lot; The wireless signal collector includes any one of a Bluetooth signal collector, a WIFI signal collector, and an NFC signal collector; The road sign display device is connected to the nearest positioning sensor; The road sign display device receives the guidance route map of different vehicles generated by the server, and receives the feature code detected by the positioning sensor; The road sign display device displays a guidance route map corresponding to the vehicle according to the feature code, thereby guiding the vehicle to the assigned parking space; When a vehicle passes by a road sign display device, the identity of the vehicle is detected by a positioning sensor, and the road sign display device retrieves and displays the guidance route map corresponding to the vehicle; the road sign display device is a projection display, and the vehicle's driving instructions are projected in front of the vehicle through the projection display; An electromagnetic suction cup is provided at the bottom of the wireless signal generator; A mechanical arm is provided at the entrance of the underground parking lot, and the mechanical arm is used to extend the wireless signal generator to the bottom of the vehicle when the vehicle enters the underground parking lot, and make the electromagnetic suction cup conductive to generate magnetic force to be magnetically attracted to the bottom of the vehicle; A collecting device is provided at the exit of the underground parking lot. The collecting device is used to send a control signal to disconnect the power to the electromagnetic suction cup and cause it to fall off and be recovered when a vehicle passes through the exit.

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