Parking lot notification system

Abstract

The invention provides a parking lot notification system. The detection unit detects a searcher searching for an empty parking space or searching for a first vehicle. The notification unit performs a notification indicating a position of an empty parking space or a position of a first vehicle to a searcher, and performs a notification to the searcher through the first notification processing when it is determined that the notification can be effectively performed to the searcher through the first notification processing. And when it is determined that the searcher cannot be effectively notified by the first notification processing and the searcher can be effectively notified by the second notification processing, the searcher is notified by the second notification processing.

Description

Technical Field

[0001] The present invention relates to a notification system, and in particular to a parking lot notification system. Background Art

[0002] In recent years, efforts have been made to provide friendly and sustainable transportation systems for vulnerable groups among traffic participants. For example, one of the important directions of efforts is to further improve the safety and convenience of traffic by using driving assistance technology.

[0003] Traditionally, in parking lots, indicator lights of each parking space can be used to indicate the use status of each parking space. However, when drivers are looking for parking spaces, their vision is often blocked by various objects in the parking lot, such as pillars or other vehicles. This causes some indicator lights to be invisible to the driver, thus affecting the driver's search for parking spaces and causing traffic jams. Therefore, there is still room for improvement in conventional driving assistance technologies. Summary of the invention

[0004] The present invention provides a parking lot notification system, which can effectively improve the efficiency of drivers in finding parking spaces, avoid traffic jams, and further provide a sustainable transportation system that can improve traffic safety and convenience.

[0005] The parking lot notification system of the present invention includes a first vehicle, which includes a detection unit and a notification unit. The detection unit detects a searcher searching for an empty parking space or searching for the first vehicle. The notification unit performs a notification indicating the location of the empty parking space or the location of the first vehicle to the searcher, and when it is determined that the notification can be effectively performed on the searcher through the first notification process, the notification unit performs the notification on the searcher through the first notification process, and when it is determined that the notification can not be effectively performed on the searcher through the first notification process, the notification unit performs the notification on the searcher through the second notification process when it can be effectively performed on the searcher through the second notification process.

[0006] In one embodiment of the present invention, the notification unit executes notification to the searcher through the second notification processing when it is determined that the second notification processing can effectively execute notification to the searcher, and executes notification to the searcher through the third notification processing when it is determined that the second notification processing cannot effectively execute notification to the searcher.

[0007] In one embodiment of the present invention, the first notification process is to perform lighting notification toward the ceiling through the notification device, and the notification unit determines whether the first notification process can effectively perform notification on the searcher according to the brightness and height of the ceiling.

[0008] In one embodiment of the present invention, the above-mentioned first notification processing is to execute lighting notification toward the ceiling through a notification device, and the notification unit determines whether the first notification processing can effectively execute notification to the searcher based on whether the searcher is located in a visible area where the lighting content of the lighting notification can be seen.

[0009] In one embodiment of the present invention, the above-mentioned second notification processing is to perform lighting notification toward the ground through a notification device. If the notification unit determines that the first notification processing cannot effectively perform notification on the searcher, the notification unit determines whether the second notification processing can effectively perform notification on the searcher based on the brightness of the ground.

[0010] In one embodiment of the present invention, the above-mentioned second notification processing is to perform lighting notification toward the ground through a notification device. If the notification unit determines that the first notification processing cannot effectively perform notification on the searcher, the notification unit determines whether the second notification processing can effectively perform notification on the searcher based on whether the searcher is located in a visible area where the lighting content of the lighting notification can be seen.

[0011] In one embodiment of the present invention, the notification unit determines whether to perform the notification to the searcher based on whether the last straight distance of the first vehicle before the first vehicle starts to perform the parking operation is greater than or equal to a preset distance.

[0012] In one embodiment of the present invention, the notification unit stores detection data generated by detecting information about the surrounding environment of the first vehicle, the driving trajectory of the first vehicle, and the driving time while the first vehicle is in the parking lot, generates a map of the parking lot based on the detection data, and determines the visible area where the searcher can see the lighting content of the lighting notification based on the map of the parking lot.

[0013] In one embodiment of the present invention, the third notification processing is to perform lighting notification by lighting the headlights of the first vehicle, and the notification unit determines whether the third notification processing can effectively perform notification on the searcher based on the ambient light intensity outside the first vehicle and whether the searcher is located in a visible area where the headlights of the first vehicle can be seen.

[0014] In one embodiment of the present invention, the parking lot notification system includes a second vehicle, and the first vehicle obtains information about the searcher detected by the second vehicle by communicating with the second vehicle.

[0015] In one embodiment of the present invention, the second vehicle notifies the searcher to assist in guiding the searcher to the location of the empty parking space or the location of the first vehicle.

[0016] In one embodiment of the present invention, the second vehicle sends a first notification to the searcher to assist in guiding the searcher to an empty parking space or an area or passage where the first vehicle is located, and the first vehicle sends a second notification to the searcher who moves guided by the first notification to assist in guiding the searcher to the location of the empty parking space or the location of the first vehicle.

[0017] Based on the above, the embodiment of the present invention can detect the searcher who is searching for an empty parking space or the first vehicle through the detection unit of the first vehicle, and notify the searcher of the location of the empty parking space or the location of the first vehicle through the notification unit of the first vehicle. In this way, the notification unit of the first vehicle can be used to notify the searcher, which can assist the searcher in finding an empty parking space or the first vehicle in the case where there is no notification device in the parking lot, the vehicles cannot communicate with each other, or the notification device of the parking lot is difficult to identify, and can effectively improve the efficiency of the driver in finding a parking space, avoid causing traffic jams, and thus provide a sustainable transportation system that can improve traffic safety and convenience.

[0018] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a parking lot notification system according to an embodiment of the present invention.

[0020] Figure 2 The present invention is a flowchart of a notification method of a parking lot notification system according to an embodiment of the present invention.

[0021] Figure 3 , Figure 4 FIG. 4 is a schematic diagram of a first vehicle performing lighting notification according to an embodiment of the present invention.

[0022] Figure 5 to Figure 7 It is a schematic diagram of determining whether to execute lighting notification according to an embodiment of the present invention.

[0023] Figure 8 FIG. 4 is a schematic diagram of a first vehicle performing lighting notification according to another embodiment of the present invention.

[0024] Figures 9 to 11 FIG. 4 is a schematic diagram of determining whether to execute lighting notification according to another embodiment of the present invention.

[0025] Fig.12 It is a schematic diagram of a first vehicle collecting detection data according to an embodiment of the present invention.

[0026] Figure 13-14 2 is a schematic diagram of a first vehicle communicating with a second vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the content of the present invention more understandable, the following embodiments are specifically cited as examples on which the present invention can be implemented. In addition, wherever possible, components / members with the same reference numerals are used in the drawings and embodiments to represent the same or similar components.

[0028] Figure 1 is a schematic diagram of a parking lot notification system according to an embodiment of the present invention. The parking lot notification system may include at least one vehicle. Figure 1 For example, the first vehicle of the parking lot notification system may include a control device 100, a notification device 106, and a detection device 108, wherein the control device 100 is coupled to the notification device 106 and the detection device 108. The control device 100 may include a detection unit 102 and a notification unit 104, wherein the detection unit 102 and the notification unit 104 may be implemented, for example, by a processor, an electronic control unit (ECU), or a microcontroller (MCU), but is not limited thereto. The notification device 106 may include, for example, at least one of a projector, a headlight, or a speaker, but is not limited thereto. In addition, the detection device 108 may include, for example, at least one of a camera, a millimeter wave radar, a laser radar, a yaw rate sensor, a wheel speed sensor, and a light sensor, but is not limited thereto.

[0029] The detection unit 102 may detect the searcher according to the detection result of the detection device 108, for example, by detecting the vehicle driven by the searcher searching for an empty parking space. The notification unit 104 may control the notification device 106 to notify the searcher of the location of the empty parking space. Figure 2 As shown, the notification unit 104 first determines whether the first notification process can effectively perform notification on the searcher (step S202). The first notification process can be, for example, the notification unit 104 controls the notification device 106 to perform lighting notification toward the ceiling C1, thereby forming an indication pattern L1 (such as Figure 3 If the notification can be effectively performed on the searcher, the notification unit 104 controls the notification device 106 to perform lighting notification toward the ceiling C1 (step S204). Figure 3 In the embodiment, the indication pattern L1 is an elliptical pattern formed above the empty parking space E1, but is not limited thereto. For example, in other embodiments, the indication pattern L1 may also be an arrow pattern indicating the position of the empty parking space E1, and the position of the indication pattern L1 may not necessarily be above the empty parking space E1.

[0030] In some embodiments, when the original brightness of the ceiling C1 (i.e., the brightness when the notification device 106 does not perform lighting notification) is higher than the preset brightness, the indication pattern L1 formed by the notification device 106 on the ceiling C1 may not be obvious. Figure 4 When the height H1 of the ceiling C1 is higher than the preset height (as shown in the figure), the brightness of the indicator pattern L1 formed on the ceiling C1 by the notification device 106 may be insufficient and difficult to identify. The notification unit 104 may obtain the original brightness and height H1 of the ceiling C1 based on the detection result of the detection device 108, and determine whether the first notification process can effectively perform notification on the searcher based on the original brightness and height H1 of the ceiling C1. For example, when the original brightness of the ceiling C1 is not higher than the preset brightness and the height H1 of the ceiling C1 is not higher than the preset height, it is determined that the first notification process can effectively perform notification. In some embodiments, the notification unit 104 may adjust the brightness of the indicator pattern L1 based on the original brightness of the ceiling C1 and the height H1 of the ceiling C1 to ensure that the searcher can see the indicator pattern L1. In addition, in some embodiments, the notification unit 104 may also determine whether the first notification process can effectively perform notification on the searcher based on the image of the indicator pattern L1 formed on the ceiling C1 captured by the detection device 108.

[0031] In addition, in other embodiments, the notification unit 104 may further consider whether the indicator pattern L1 formed by the notification device 106 on the ceiling C1 is blocked by an obstacle, so that the searcher cannot see the indicator pattern L1, and if there is an obstacle blocking the searcher's line of sight, it is determined that the notification cannot be performed. Figure 4 In an embodiment, the notification unit 104 can determine whether the indicator pattern L1 is blocked by obstacles O1 and O2 and cannot be seen by the searcher based on the height of the obstacle O1 (e.g., beam) on the ceiling C1, the height of the obstacle O2 (e.g., other vehicles) on the ground F1, the eye height H1 of the searcher, the height H2 of the ceiling C1 from the ground F1, and the horizontal distance D1 between the searcher's eyes and the indicator pattern L1, and adjust the projection position of the indicator pattern L1 accordingly. Figure 4 Various environmental information (such as height, distance, etc.) can be obtained by using the detection device 108 while the first vehicle CA1 is driving in the parking lot.

[0032] In addition, ignoring the situation where obstacles block the line of sight, the searcher may also be too far away from the indicator pattern L1 and thus be unable to see the lighting content (indicator pattern L1) of the lighting notification. The notification unit 104 may also calculate the searcher's visible area based on the searcher's eye height H1, the height H2 of the ceiling C1, and the horizontal distance D1 of the indicator pattern L1, and determine whether to control the notification device 106 to project the indicator pattern L1 based on whether the searcher is in the visible area, wherein the visible area is the area where the searcher can see the indicator pattern L1. For example Figure 5As shown, when the searcher (empty parking space searching vehicle CA0) is outside the visible area R1, the notification unit 104 determines that the searcher is outside the visible area, and therefore does not control the notification device 106 to project the indication pattern L1. Figure 5 In the embodiment, the visible area R1 is set as a rectangle with a long side parallel to the lane in consideration of the lane configuration. However, in other embodiments, the visible area R1 may also be set as a rectangle with a long side perpendicular to the lane, for example Figure 6 As shown, the long side of the visible area R1 may be perpendicular to the extension direction of the lanes and cover two parallel lanes. When the empty parking space searching vehicle CA0 enters the visible area R1, the notification unit 104 may control the notification device 106 to project the indication pattern L1.

[0033] In addition, in some embodiments, the notification unit 104 may also determine whether to control the notification device 106 to project the indication pattern L1 according to the lane marking. Figure 7 In the embodiment shown, the notification unit 104 determines whether to control the notification device 106 to project the indication pattern L1 based on whether the empty parking space searching vehicle CA0 is located in the visible area R1, and also determines whether to control the notification device 106 to project the indication pattern L1 based on the lane mark SL1 in the visible area R1. Figure 7 In the embodiment, the lane sign SL1 indicates that the empty parking space searching vehicle CA0 can reach the empty parking space along the direction indicated by the lane sign SL1, so the notification unit 104 determines that the notification device 106 can be controlled to project the indication pattern L1. In other embodiments, if the direction indicated by the lane sign SL1 is the same as the direction indicated by the lane sign SL1, the notification unit 104 can control the notification device 106 to project the indication pattern L1. Figure 7 In contrast, the empty parking space searching vehicle CA0 will not be able to enter the lane and reach the empty parking space, so the notification unit 104 determines that it is not necessary to control the notification device 106 to project the indication pattern L1. In addition, in the absence of the lane mark SL1, if the detection device 108 detects that the empty parking space searching vehicle CA0 is getting closer and closer to the first vehicle CA1 and enters the visible area R1, it can also be determined that the notification device 106 can be controlled to project the indication pattern L1.

[0034] Back to Figure 2 In the embodiment, if the notification unit 104 determines in step S202 that the first notification process cannot effectively notify the searcher, the notification unit 104 may then determine whether the second notification process can effectively notify the searcher (step S206). The second notification process may be, for example, the notification unit 104 controlling the notification device 106 to perform lighting notification toward the ground F1, thereby forming an indication pattern L2 (such as Figure 8 If the second notification process can effectively notify the searcher, the notification unit 104 controls the notification device 106 to perform lighting notification toward the ground F1 (step S208). Figure 8In the embodiment, the indication pattern L2 is a triangular pattern formed beside the empty parking space E1 to indicate the position of the empty parking space E1. However, the shape of the indication pattern L2 is not limited thereto. For example, in other embodiments, the indication pattern L2 may also be an arrow pattern.

[0035] When the original brightness of the ground F1 (i.e., the brightness when the notification device 106 does not perform the lighting notification) is higher than the preset brightness, the indication pattern L2 formed on the ground F1 by the notification device 106 may not be obvious. Therefore, the notification unit 104 can obtain the original brightness of the ground F1 according to the detection result of the detection device 108, and judge whether the second notification process can effectively perform the notification on the searcher according to the original brightness of the ground F1. In some embodiments, the notification unit 104 can adjust the brightness of the indication pattern L2 according to the original brightness of the ground F1 to ensure that the searcher can see the indication pattern L2. In addition, in some embodiments, the notification unit 104 can also judge whether the second notification process can effectively perform the notification on the searcher according to the image of the indication pattern L2 formed on the ground F1 captured by the detection device 108. In addition, in other embodiments, the notification unit 104 can further consider whether the indication pattern L2 formed on the ground F1 by the notification device 106 is blocked by obstacles, so that the searcher cannot see the indication pattern L2. If there is an obstacle blocking the searcher's line of sight, it is judged that the notification cannot be performed.

[0036] Similarly, the notification unit 104 may also determine whether to control the notification device 106 to project the indication pattern L2 according to whether the searcher is in the visible area, where the visible area is the area where the searcher can see the indication pattern L2. Fig. 9 In the embodiment, the first vehicle CA1 turns at the position point A1 in the middle of the lane and starts to perform a parking operation at the position point B1 in the middle of the lane. The distance L between the position points A1 and B1 is the last straight distance before the first vehicle CA1 starts to perform the parking operation. The notification unit 104 can determine the visible area R2 according to the distance L between the position points A1 and B1, for example, the area with the distance L as the long side and the lane width as the short side is the visible area R2. When the vehicle being searched for in the empty parking space is located in the visible area R2, the notification unit 104 determines that the searcher can see the lighting content of the lighting notification, and controls the notification device 106 to project the indication pattern L2.

[0037] The notification unit 104 may determine the position point A1 and the position point B1 according to the detection results of the detection device 106 (e.g., the detection results of the yaw rate sensor, the wheel speed sensor, and the camera). For example, the notification unit 104 may know that the first vehicle CA1 turns at the position point A1 and then travels a distance L (which may be known from the mileage counter of the first vehicle CA1) according to the sensing results of the yaw rate sensor and the wheel speed sensor, and thus may determine the position point A1, and may know that the first vehicle CA1 starts to perform turning, reversing, and moving forward at the position point B1 according to the detection results of the yaw rate sensor, the wheel speed sensor, and the camera, and the first vehicle CA1 finally stops in the parking space, and thus may determine that the position point B1 is the position point where the first vehicle CA1 starts to perform the parking operation.

[0038] In some embodiments, the notification unit 104 may also determine whether to perform notification to the searcher based on whether the last straight distance of the first vehicle CA1 before the parking operation is greater than or equal to a preset distance. Fig. 9 For example, if the distance L is less than the preset distance, the notification unit 104 determines that the searcher should be able to directly see the empty parking space, and there is no need to perform the second notification process to notify the searcher. If the distance L is greater than or equal to the preset distance, it is determined that the searcher needs to be notified when entering the visible area R2, and the notification device 106 is controlled to project the indication pattern L2.

[0039] It should be noted that in other embodiments, the first vehicle CA1 may fine-tune the position of the indication pattern L2 according to the position of the empty parking space search vehicle. Fig.10 , Fig.11 Taking the embodiment as an example, compared with Fig.11 Example, Fig.10 In the embodiment, the empty parking space searching vehicle CA0 is closer to the position point A1, so Fig.10 In the embodiment, the notification unit 104 may control the notification device 106 to project the indication pattern L2 at the center of the lane. Fig.11 In an embodiment, the notification unit 104 may control the notification device 106 to project the indication pattern L2 at a position closer to the empty parking space E1 so that the searcher searching for the empty parking space vehicle CA0 can more easily see the indication pattern L2 when entering the visible area R2 but not reaching the position point A.

[0040] In addition, in some embodiments, in addition to determining the position point A1 and the position point B1 according to the detection results of the yaw rate sensor, the wheel speed sensor, and the camera, and then determining the visible area R2, the notification unit 104 may also Fig.12As shown, based on the detection and storage of the information of the surrounding environment of the first vehicle CA1 (such as the image information obtained by the camera, the distance information obtained by the millimeter wave radar, but not limited to this), the driving trajectory and driving time of the first vehicle CA1 during the period when the first vehicle CA1 is in the parking lot, the detection data generated, the parking lot map is generated based on the detection data obtained by accumulating the detection results, and the visible area R2 where the searcher can see the lighting content of the lighting notification is determined based on the parking lot map. In addition, the above-mentioned visible area R1 can also be determined in this way.

[0041] Returning to step S206 again, if the second notification process cannot effectively perform notification on the searcher, the notification unit 104 performs notification on the searcher through the third notification process, for example, by lighting up the headlight of the first vehicle CA1 to perform lighting notification (step S210). In other embodiments, lighting notification can also be performed by, for example, lighting up the direction indicator of the first vehicle CA1, not limited to lighting up the headlight. For example, when it is determined based on the sensing result of the light sensor that the light intensity of the ambient light is higher than the preset light intensity, and the searcher is located in a visible area where the headlight of the first vehicle can be seen (for example, when there is no obstacle between the headlight of the first vehicle CA1 and the searcher), it can be determined that the indicator pattern L2 projected by the control notification device 106 is difficult to be recognized, and the headlight of the first vehicle CA1 can be seen by the searcher, and the notification unit 104 can perform lighting notification by lighting up the headlight of the first vehicle CA1. In some embodiments, the notification unit 104 can also adjust the brightness of the headlight of the first vehicle CA1 based on the sensing result of the light sensor to ensure that the third notification process can effectively perform notification on the searcher. In addition, in some embodiments, if the searcher cannot be notified effectively by lighting the headlight of the first vehicle CA1, the notification unit 104 may control the notification device 106 (e.g., a speaker) to emit a sound signal to notify the searcher. In other embodiments, as long as the searcher can be visually identified, the first notification process and the second notification process may also be, for example, an illumination process that emits visible light (e.g., laser light, but not limited to this) that can be visually identified even when there is no irradiable object (e.g., a ceiling or a ground).

[0042] Fig.131 is a schematic diagram of V2V (Vehicle-to-vehicle) communication between a first vehicle and a second vehicle according to an embodiment of the present invention. In this embodiment, the first vehicle CA1 can obtain information about the empty parking space searching vehicle CA0 detected by the second vehicle CA2 by communicating with the second vehicle, so as to increase the range in which the empty parking space searching vehicle CA0 can be detected, and the information about the empty parking space searching vehicle CA0 can be obtained earlier. In addition, in the case where the second vehicle CA2 has the same components (such as the detection unit 102, the notification unit 104, the notification device 106, and the detection device 108, etc.) and functions as the first vehicle CA1, the second vehicle CA2 can also Fig.14 As shown, an indicator pattern L3 is provided for lighting notification, wherein the indicator pattern L3 is used to assist the searcher and guide the searcher to the empty parking space. In some embodiments, when the vehicle passes through the entrance gate, the first vehicle CA1 can also obtain information about the empty parking space searching vehicle CA0 through the vehicle-to-infrastructure (V2I) communication between the first vehicle CA1 and the parking lot facility, such as information that the empty parking space searching vehicle CA0 has entered the parking lot.

[0043] It is worth noting that the parking lot notification system in the above embodiment is described by taking the example of a first vehicle assisting a searcher who is driving a vehicle to search for empty parking spaces to find an empty parking space, but the application of the parking lot notification system is not limited to this. The parking lot notification system can also be used to assist a searcher (who may be riding other mobile vehicles or walking) to find other targets, such as the first vehicle or a parking lot payment machine, an exit, etc., and is not limited to the above embodiment. Since the implementation method of the parking lot notification system used to assist in finding other targets is the same as the implementation method of assisting in finding an empty parking space in the above embodiment, it will not be repeated here.

[0044] In summary, the embodiments of the present invention can detect a searcher who is searching for an empty parking space or the first vehicle through the detection unit of the first vehicle, and notify the searcher of the location of the empty parking space or the location of the first vehicle through the notification unit of the first vehicle. In this way, by notifying the searcher through the notification unit of the first vehicle, the searcher can be assisted in finding an empty parking space or the first vehicle in the case where there is no notification device in the parking lot, the vehicles cannot communicate with each other, or the notification device of the parking lot is difficult to identify, and the efficiency of the driver finding a parking space can be effectively improved to avoid causing traffic jams, thereby providing a sustainable transportation system that can improve traffic safety and convenience.

[0045] Although the present invention has been disclosed as above by way of embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the claims.

Claims

1. A parking lot notification system, characterized in that: include: The first vehicle comprises: a detection unit, detecting a searcher searching for an empty parking space or searching for the first vehicle; as well as a notification unit configured to notify the searcher of the location of the vacant parking space or the location of the first vehicle, When the notification unit determines that the notification can be effectively executed on the searcher through the first notification processing, it executes the notification on the searcher through the first notification processing; when it determines that the notification cannot be effectively executed on the searcher through the first notification processing, when the notification can be effectively executed on the searcher through the second notification processing, it executes the notification on the searcher through the second notification processing.

2. The parking lot notification system according to claim 1, characterized in that: When the notification unit determines that the notification can be effectively executed on the searcher through the second notification processing, it executes the notification on the searcher through the second notification processing; and when it determines that the notification cannot be effectively executed on the searcher through the second notification processing, it executes the notification on the searcher through a third notification processing.

3. The parking lot notification system according to claim 1, characterized in that: The first notification process is to perform lighting notification toward the ceiling by a notification device, and the notification unit determines whether the notification to the searcher can be effectively performed by the first notification process according to the brightness and height of the ceiling.

4. The parking lot notification system according to claim 1, characterized in that: The first notification process is to perform lighting notification toward the ceiling through a notification device, and the notification unit determines whether the notification can be effectively performed on the searcher through the first notification process based on whether the searcher is located in a visible area where the lighting content of the lighting notification can be seen.

5. The parking lot notification system according to claim 1, characterized in that: The second notification process is to perform lighting notification toward the ground through a notification device. If the notification unit determines that the first notification process cannot effectively perform the notification on the searcher, the notification unit determines whether the second notification process can effectively perform the notification on the searcher based on the brightness of the ground.

6. The parking lot notification system according to claim 1, characterized in that: The second notification processing is to execute a lighting notification toward the ground through a notification device. If the notification unit determines that the first notification processing cannot effectively execute the notification to the searcher, the notification unit determines whether the second notification processing can effectively execute the notification to the searcher based on whether the searcher is located in a visible area where the lighting content of the lighting notification can be seen.

7. The parking lot notification system according to claim 5, characterized in that: The notification unit determines whether to perform the notification on the searcher according to whether the last straight travel distance of the first vehicle before the first vehicle starts to perform the parking operation is greater than or equal to a preset distance.

8. The parking lot notification system according to claim 5, characterized in that: While the first vehicle is in the parking lot, the notification unit stores detection data generated by detecting information about the first vehicle's surrounding environment, the first vehicle's driving trajectory and driving time, generates a map of the parking lot based on the detection data, and determines a visible area in which the searcher can see the lighting content of the lighting notification based on the map of the parking lot.

9. The parking lot notification system according to claim 2, characterized in that: The third notification processing is to perform lighting notification by lighting the headlights of the first vehicle, and the notification unit determines whether the notification can be effectively performed on the searcher through the third notification processing based on the ambient light intensity outside the first vehicle and whether the searcher is located in a visible area where the headlights of the first vehicle can be seen.

10. The parking lot notification system according to claim 1, characterized in that: include: The first vehicle obtains the information of the searcher detected by the second vehicle by communicating with the second vehicle.

11. The parking lot notification system according to claim 10, characterized in that: The second vehicle performs notification on the searcher to assist in guiding the searcher to the location of the vacant parking space or the location of the first vehicle.

12. The parking lot notification system according to claim 10, characterized in that: The second vehicle sends a first notification to the searcher to assist in guiding the searcher to the empty parking space or the area or passage where the first vehicle is located, and the first vehicle sends a second notification to the searcher who moves under the guidance of the first notification to assist in guiding the searcher to the location of the empty parking space or the location of the first vehicle.

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