CN111510930A

CN111510930A - Wireless coverage system applied to parking lot

Info

Publication number: CN111510930A
Application number: CN201910100518.5A
Authority: CN
Inventors: 洪永川; 邓存喜
Original assignee: Enjoyment Technology Co ltd
Current assignee: Enjoyment Technology Co ltd
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2020-08-07

Abstract

The invention discloses a wireless coverage system applied to a parking lot, which comprises a plurality of APs arranged in the parking lot, wherein the APs at least comprise a directional AP, and the radiation direction of the directional AP is the same as or approximately the same as the channel direction in the parking lot. The wireless coverage system applied to the parking lot adopts the directional AP and the omnidirectional AP to combine the parking lot environment for wireless coverage, can realize positioning navigation in the parking lot by using less APs, can effectively reduce the planning difficulty of AP layout, reduce the use number of the APs, reduce the layout density of the APs, effectively save the wireless coverage cost of the indoor parking lot, and is suitable for large-scale popularization and application.

Description

Wireless coverage system applied to parking lot

Technical Field

The invention belongs to the field of facilities of parking lots, and particularly relates to a wireless coverage system applied to a parking lot.

Background

At present, with the development of cities and the automobile industry, facilities in parking lots are receiving more and more attention. In an indoor parking lot, since a satellite positioning signal is weak, positioning needs to be performed in a bluetooth mode, an AP (wireless access point) mode, and the like, and indoor navigation in the parking lot is realized through the positioning. In order to ensure the positioning accuracy, AP positioning generally requires that a terminal device obtains signal strengths of at least three APs, and then determines the position of the terminal device through three or more APs. The APs used in the scheme are omnidirectional APs, great effort is needed to calculate the arrangement positions of the APs, and the arrangement density of the APs is high, which may even cause channel interference between different APs.

Disclosure of Invention

The invention mainly aims to provide a wireless coverage system applied to a parking lot, which can meet the positioning and navigation requirements in the parking lot under the condition of using less APs by utilizing the environment and directional APs of the parking lot, and adopts the following technical scheme in order to realize the purpose:

the wireless coverage system applied to the parking lot comprises a plurality of APs arranged in the parking lot, wherein the APs at least comprise a directional AP, and the radiation direction of the directional AP is the same as or approximately the same as the direction of a channel in the parking lot.

Further, the directional AP is disposed above the channel.

Further, there are a plurality of directional APs, there are one or more directional APs above the passageway.

Furthermore, the directional APs arranged above the same channel are arranged at intervals, and the radiation directions of the directional APs are the same.

Further, the horizontal radiating surface of the orientation AP is inclined to the channel along the radiating direction.

Further, an included angle between the horizontal radiation plane of the directional AP and the channel is θ, and sin θ is (H-H)/L, where H is a height of the directional AP, H is a set height, and L is a maximum distance of effective radiation on the horizontal radiation plane of the directional AP.

Further, the wireless access device is connected with the AP in a wired or wireless communication mode.

Further, the wireless access device, the switch and the front server are sequentially in communication connection.

Further, the directional AP is arranged at the direction turning part of the channel.

Further, the parking lot further comprises at least one omnidirectional AP, and the omnidirectional AP is arranged at the entrance and/or the exit of the parking lot.

The wireless coverage system applied to the parking lot adopts the directional AP and the omnidirectional AP to combine the parking lot environment for wireless coverage, can realize positioning navigation in the parking lot by using less APs, can effectively reduce the planning difficulty of AP layout, reduce the use number of the APs, reduce the layout density of the APs, effectively save the wireless coverage cost of the indoor parking lot, and is suitable for large-scale popularization and application.

Drawings

Fig. 1 is a block diagram of an embodiment 1 of a wireless coverage system applied to a parking lot according to the present invention;

FIG. 2 is a schematic diagram of an embodiment of the directional AP of embodiment 1 of FIG. 1 according to the present invention;

fig. 3 is a schematic diagram of a change of a wireless coverage range when a tilt angle of the directional AP changes in the embodiment 1 shown in fig. 1;

fig. 4 is a schematic diagram of another embodiment of the directional AP in embodiment 1 of fig. 1 according to the present invention.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-2, fig. 1-2 are schematic views of an embodiment 1 of a wireless coverage system applied to a parking lot, the wireless coverage system 10 being applied to the parking lot, the wireless coverage system including a plurality of APs 1, a switch 2 and a server 3, the AP1, the switch 2 and the server 3 being connected in a sequential communication manner, wherein the AP1 is disposed in the parking lot.

Wherein the AP1 includes an omnidirectional AP (not shown) and at least one directional AP11, the directional AP11 is mounted on the top of the parking lot above the aisle, and the radiation direction of the directional AP11 is the same or approximately the same as the aisle direction in the parking lot. The directional AP radiation direction is non-omnidirectional, has a large radiation value in a certain direction, and generally represents the AP radiation value distribution in the horizontal direction and the vertical direction, and the directional AP radiation direction is the direction of the maximum radiation value of the directional AP in the horizontal direction. The passageways in the parking lot are mainly roadways and sidewalks, and the radiation direction of the directional AP is the same as or approximately the same as the direction of the passageways, namely the radiation direction of the directional AP is the same as or approximately the same as the direction of the passageways, so that the radiation of the directional AP can cover the passageways with a large possibility.

In implementation, the AP may further include a wireless access device, such as a wireless router, where the wireless access device is in wired or wireless communication connection with the AP, and the wireless access device, the switch, and the server are in sequential communication connection.

Referring to fig. 2, a parking lot is provided with a parking lot top 101, a passageway floor 102, and an orientation AP11 installed on the parking lot top 101, a height line 103 of a terminal receiving a wireless signal is estimated in wireless coverage, a maximum distance L of effective radiation on a horizontal radiation surface of an orientation AP11, and an edge line a of an effective radiation portion on a vertical radiation surface, an effective radiation range of the orientation AP11 on the passageway is shown in the figure.

Fig. 3 is a schematic diagram of a change of a wireless coverage range when a tilt angle of the directional AP changes in embodiment 1 shown in fig. 1. The inclination angle θ of the orientation AP is an angle between a horizontal radiation plane of the orientation AP11 and the channel (channel ground 102), and when the orientation AP11 is kept vertical, the horizontal radiation plane is parallel to the channel, that is, the inclination angle θ of the orientation AP is 0.

In practice, in order to achieve a larger radiation coverage of the directional AP11 on the tunnel, the horizontal radiation surface of the directional AP11 is tilted in the radiation direction toward the tunnel, i.e., the far end of the horizontal radiation surface of the directional AP11 is close to the tunnel floor 102. in a preferred embodiment, the tilt angle is (H-H)/L, where H is the height of the directional AP11, and when strictly calculated, H is the height of the horizontal radiation surface from the tunnel floor 102 in the vertical state of the directional AP11, H is a set height 103, and the set height 103 is the distance between the wireless coverage terminal device and the tunnel floor 102, and when implemented, for example, the height is about 1.2M when the terminal device is held by hand, and the height is about 0.8M when the terminal device is mounted on a vehicle, the set according to practical circumstances, L is the maximum distance of effective radiation on the horizontal radiation surface of the directional AP11, and when the effective radiation distance of the radiation surface radiation line on the horizontal radiation surface is greater than the effective radiation surface radiation density of the tilt angle M, and when the effective radiation distance of the radiation surface is greater than the effective radiation surface of the radiation AP11, and when M', the effective radiation surface is greater than the effective radiation range of the effective radiation surface of the radiation surface 11 when M, and the effective radiation range of the radiation surface of the radiation gap AP 3625, and when M, and the radiation surface of the.

In some embodiments, H is the distance between the top of the parking lot and the floor of the passage, H is zero, and the tilt angle θ satisfies sin θ H/L, and the effective radiation distance M L cos θ.

Referring to fig. 4, which is a schematic view of another embodiment of the directional AP in the embodiment 1 shown in fig. 1, compared to fig. 2, in this embodiment, two directional APs 11 are provided on the top 101 of the parking lot above a passageway, the two directional APs 11 are spaced apart, and the radiation directions of the two directional APs 11 are the same, so that the installation position of one directional AP can be selected to be approximately located at the edge of the effective radiation range of the other directional AP.

In practice, the directional AP is disposed above the turning point of the channel, for example, above the turning point of the vehicle channel, the turning point of the channel is formed by intersecting two channels with different directions, the radiation direction of the directional AP disposed at the turning point is the same as that of one of the channels, the other directional AP is disposed on the other channel, and the effective radiation range edge of the directional AP is substantially located at the turning point.

In practice, the wireless coverage system applied to the parking lot of the invention further comprises at least one omnidirectional AP, and the omnidirectional AP is arranged at the entrance and/or the exit of the parking lot.

The AP is usually a wireless access point, in the present invention, the AP includes other wireless access devices with AP functions, such as a wireless router, and the like, and it is within the protection scope of the present invention to use the wireless router to replace one or more APs, replace a part of omnidirectional APs, and the like in the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The wireless coverage system applied to the parking lot comprises a plurality of APs arranged in the parking lot, and is characterized in that the APs at least comprise a directional AP, and the radiation direction of the directional AP is the same as or approximately the same as the direction of a channel in the parking lot.

2. The wireless coverage system of claim 1, wherein the directional AP is disposed above the channel.

3. The wireless coverage system of claim 2, wherein the directional APs are plural, and one or more directional APs are disposed above the channel.

4. The wireless coverage system of claim 3, wherein the directional APs disposed above the same channel are spaced apart, and the radiation directions of the directional APs are the same.

5. The wireless coverage system of claim 1, wherein the horizontal radiating plane of the directional AP is inclined to the channel along the radiating direction.

6. The wireless coverage system of claim 1, wherein the horizontal radiating surface of the directional AP has an angle θ, sin θ ═ H/L with respect to the channel, where H is the height of the directional AP, H is a set height, and L is the maximum distance of effective radiation on the horizontal radiating surface of the directional AP.

7. The wireless coverage system of claim 1, further comprising a wireless access device communicatively coupled with the AP by wire or wirelessly.

8. The wireless coverage system of claim 7, further comprising a switch and a front-end server, wherein the wireless access device, the switch and the front-end server are sequentially communicatively connected.

9. The wireless coverage system of claim 1, wherein the directional AP is provided at a directional turn of the channel.

10. The wireless coverage system of claim 1, further comprising at least one omni-directional AP disposed at an entrance and/or exit of the parking lot.