Antenna system, antenna detection method, and antenna device

Abstract

This system provides an antenna that can acquire accurate spatial information for each region within a field. [Solution] The antenna system comprises multiple antenna pairs, multiple transmitting end switches, multiple receiving end switches, and a wireless receiving circuit. Each antenna pair includes a transmitting end antenna and a receiving end antenna, the multiple transmitting end switches are connected to the multiple transmitting end antennas respectively, and the multiple receiving end switches are connected to the multiple receiving end antennas respectively. The wireless receiving circuit is connected to the multiple receiving end switches. The multiple transmitting end switches and the multiple receiving end switches are switched sequentially, and the transmitting end switches and receiving end switches connected to the same antenna pair are switched synchronously. The wireless receiving circuit is configured to sequentially receive multiple wireless signals containing multiple spatial information from multiple regions of the field.

Description

Technical Field

[0001] The present invention relates to the field of communications, and particularly to an antenna system, an antenna detection method, and an antenna device.

Background Art

[0002] Wi-Fi signal detection technology is gradually being utilized for detecting whether a child is in a vehicle. However, in addition to detecting whether a child is in a vehicle, it is required to be able to identify the seating position of the child as a more practical requirement.

[0003] A multiple-input multiple-output system is a type of antenna switching system. Since a plurality of antenna groups are respectively provided at the input end and the output end of the multiple-input multiple-output system, the multiple-input multiple-output system improves the diversity of Wi-Fi signals, but at the same time increases the complexity of the algorithm. Furthermore, since the multiple-input multiple-output system cannot obtain accurate spatial information in the field, the exact position of the child cannot be confirmed.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The technical problem to be solved by the present invention is to provide an antenna system, an antenna detection method, and an antenna device with respect to the prior art.

Means for Solving the Problems

[0005] To solve the above technical problems, one of the technical means employed by the present invention is to provide an antenna system for field application. The antenna system comprises a plurality of antenna pairs, a plurality of transmitting end switches, a plurality of receiving end switches, and a wireless receiving circuit. Each antenna pair includes a transmitting end antenna and a receiving end antenna, with a plurality of transmitting end switches connected to the plurality of transmitting end antennas, respectively, and a plurality of receiving end switches connected to the plurality of receiving end antennas, respectively. The wireless receiving circuit is connected to the plurality of receiving end switches. The plurality of transmitting end switches and the plurality of receiving end switches are switched sequentially, and are configured so that the transmitting end switches and receiving end switches connected to the same antenna pair are switched synchronously. The wireless receiving circuit is configured to sequentially receive a plurality of wireless signals, each containing a plurality of spatial information for a plurality of regions of the field.

[0006] To solve the above technical problems, another technical means employed by the present invention provides an antenna detection method for application in the field. The antenna detection method includes arranging a plurality of antenna pairs, each antenna pair including a transmitting end antenna and a receiving end antenna, with the transmitting end antenna and receiving end antenna of each antenna pair connected to a transmitting end switch and a receiving end switch, respectively; sequentially switching the plurality of transmitting end switches and the plurality of receiving end switches, with the transmitting end switches and receiving end switches connected to the same antenna pair being switched synchronously; sequentially transmitting a plurality of radio signals to a plurality of receiving end antennas using the plurality of transmitting end antennas; and sequentially receiving a plurality of radio signals via a radio receiving circuit, each containing a plurality of spatial information for a plurality of regions in the field.

[0007] To solve the above technical problems, another technical means employed by the present invention is to provide an antenna device. The antenna device comprises a wireless transmission circuit, a plurality of transmitting end switches, and a plurality of transmitting end antennas. The plurality of transmitting end switches are connected to the wireless transmission circuit, and the plurality of transmitting end antennas are each connected to the plurality of transmitting end switches. The plurality of transmitting end switches are configured to be switched sequentially. [Effects of the Invention]

[0008] One of the beneficial effects of the present invention is that the antenna system, antenna detection method, and antenna device provided by the present invention can acquire spatial information for each area within a field. Using the spatial information for each area, it becomes possible to confirm whether a person present in each area is a child or an adult and to determine the person's location, while simultaneously reducing the complexity of the algorithm.

[0009] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the invention, however, the drawings provided are for reference and illustrative purposes only and are not intended to limit the invention. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic diagram of a first embodiment of the antenna system according to the present invention. [Figure 2] Figure 1 is a schematic diagram of the main beam of the antenna system. [Figure 3A] This is a flowchart of one embodiment of the antenna detection method according to the present invention. [Figure 3B] This is a flowchart of one embodiment of the antenna detection method according to the present invention. [Figure 4] This is a schematic diagram of a second embodiment of the antenna system according to the present invention. [Figure 5] Figure 4 is a schematic diagram of the main beam of the antenna system. [Figure 6] This is a schematic diagram of a third embodiment of the antenna system according to the present invention. [Figure 7] Figure 6 is a schematic diagram of the main beam of the antenna system. [Figure 8] This is a schematic diagram of a first embodiment of the antenna device according to the present invention. [Figure 9] This is a schematic diagram of a second embodiment of the antenna device according to the present invention. [Figure 10] This is a schematic diagram of a third embodiment of the antenna device according to the present invention. [Modes for carrying out the invention]

[0011] The embodiments of the "antenna system, antenna detection method, and antenna device" disclosed herein will be described below with reference to specific examples. Those skilled in the art will be able to understand the advantages and effects of the present invention from the disclosed content. The present invention can be implemented or applied through other different specific embodiments, and the various detailed descriptions herein can be modified and changed in various ways without departing from the spirit of the invention, based on different viewpoints and applications. It should also be noted in advance that the drawings of the present invention are for illustrative purposes only and are not based on actual dimensions. The technical content relating to the present invention will be described in more detail using the following embodiments, but the disclosed content is not intended to limit the scope of protection of the present invention.

[0012] In this specification, terms such as “first,” “second,” and “third” may be used to describe various elements or signals, but it should be understood that these elements or signals should not be limited by these terms. These terms are primarily used to distinguish one element from another, or one signal from another. Furthermore, the term “or” in this specification should be understood to include any one or more of the items listed in relation to it, depending on the actual situation.

[0013] Figure 1 is a schematic diagram of a first embodiment of the antenna system according to the present invention. As shown in Figure 1, the antenna system includes a first antenna pair 10, a first transmitting end switch 11, a first receiving end switch 12, a second antenna pair 20, a second transmitting end switch 21, a second receiving end switch 22, a third antenna pair 30, a third transmitting end switch 31, a third receiving end switch 32, a wireless transmitting circuit 4, a wireless receiving circuit 5, and a control circuit 6. The antenna system of this embodiment is installed on the ceiling of a vehicle and is applied to the interior of the vehicle V as the field, but the application field of the antenna system of the present invention is not limited to this. For example, the antenna system of the present invention can also be applied to warehouses, offices, conference rooms, or rooms. The first antenna pair 10 includes a first transmitting end antenna 101 and a first receiving end antenna 102. Both the first transmitting end antenna 101 and the first receiving end antenna 102 are directional antennas. A directional antenna is an antenna that has directional or angular directional characteristics. Generally, the gain of a directional antenna is at least 10 decibels (dBi) or about 10 decibels greater than the gain of a non-directional antenna.

[0014] The first transmitting end antenna 101 and the first receiving end antenna 102 are provided on the first circuit board M1 and the second circuit board M2, respectively. The first transmitting end antenna 101 is connected to the first transmitting end switch 11, and the first receiving end antenna 102 is connected to the first receiving end switch 12.

[0015] The second antenna pair 20 includes a second transmitting end antenna 201 and a second receiving end antenna 202. Both the second transmitting end antenna 201 and the second receiving end antenna 202 are directional antennas and are provided on the third circuit board M3 and the fourth circuit board M4, respectively. The second transmitting end antenna 201 is connected to the second transmitting end switch 21, and the second receiving end antenna 202 is connected to the second receiving end switch 22.

[0016] The third antenna pair 30 includes a third transmitting-end antenna 301 and a third receiving-end antenna 302. Both the third transmitting-end antenna 301 and the third receiving-end antenna 302 are directional antennas, and are respectively provided on a fifth circuit board M5 and a sixth circuit board M6. The third transmitting-end antenna 301 is connected to a third transmitting-end switch 31, and the third receiving-end antenna 302 is connected to a third receiving-end switch 32.

[0017] Through the design of the antenna shape or the distance between two antennas, the isolation between the first transmitting-end antenna 101 and the second transmitting-end antenna 201 is made greater than 30 decibels, the isolation between the second transmitting-end antenna 201 and the third transmitting-end antenna 301 is made greater than 30 decibels, the isolation between the first receiving-end antenna 102 and the second receiving-end antenna 202 is made greater than 30 decibels, and the isolation between the second receiving-end antenna 202 and the third receiving-end antenna 302 is made greater than 30 decibels.

[0018] The wireless transmission circuit 4, the first transmitting-end switch 11, the second transmitting-end switch 21, and the third transmitting-end switch 31 are provided on a seventh circuit board M7. The output end of the wireless transmission circuit 4 is connected to the first transmitting-end switch 11, the second transmitting-end switch 21, and the third transmitting-end switch 31. The wireless transmission circuit 4 may include, for example, a central processing unit, a radio frequency processing circuit, a channel state information acquisition circuit, and a network interface.

[0019] The wireless transmission circuit 4 may be, for example, an antenna driving circuit, and is configured to drive the corresponding antenna to transmit a wireless signal such as a Wi-Fi signal, a Bluetooth signal, or infrared rays. In this embodiment, the wireless signal is a Wi-Fi signal, and the wireless transmission circuit 4 is a Wi-Fi signal transmission circuit.

[0020] The wireless receiving circuit 5, the first receiving end switch 12, the second receiving end switch 22, and the third receiving end switch 32 are provided on the eighth circuit board M8. The input terminal of the wireless receiving circuit 5 is connected to the first receiving end switch 12, the second receiving end switch 22, and the third receiving end switch 32. The wireless receiving circuit 5 includes a central processing unit, a radio frequency processing circuit, a channel status information acquisition circuit, and a network interface.

[0021] The wireless transmission circuit 4 and the wireless reception circuit 5 may, for example, be in station mode and access point mode (AP mode), or for example, in access point mode and station mode, respectively.

[0022] The wireless receiving circuit 5 is configured to receive a wireless signal. The wireless signal is, for example, a Wi-Fi signal, a Bluetooth signal, or an infrared signal. In this embodiment, the wireless signal is a Wi-Fi signal, and the wireless receiving circuit 5 is a Wi-Fi signal receiving circuit.

[0023] The first circuit board M1, the third circuit board M3, the fifth circuit board M5, and the seventh circuit board M7 are, for example, installed in the left-side area of ​​the ceiling inside the vehicle. The second circuit board M2, the fourth circuit board M4, the sixth circuit board M6, and the eighth circuit board M8 are, for example, installed in the right-side area of ​​the ceiling inside the vehicle.

[0024] The control circuit 6 is connected to the first transmitting end switch 11, the first receiving end switch 12, the second transmitting end switch 21, the second receiving end switch 22, the third transmitting end switch 31, and the third receiving end switch 32. The first transmitting end switch 11, the first receiving end switch 12, the second transmitting end switch 21, the second receiving end switch 22, the third transmitting end switch 31, and the third receiving end switch 32 are, for example, mechanical switches, solenoid valve switches, or transistor switches.

[0025] The control circuit 6 is configured to sequentially switch the first transmitting end switch 11, the second transmitting end switch 21, and the third transmitting end switch 31 at multiple switching timings. The control circuit 6 is configured to sequentially switch the first receiving end switch 12, the second receiving end switch 22, and the third receiving end switch 32 at multiple switching timings.

[0026] Preferably, the same time interval is provided between multiple switching timings, in other words, a regular switching pattern is maintained.

[0027] The first transmitting end switch 11 and the first receiving end switch 12, connected to the first antenna pair 10, are switched synchronously. The second transmitting end switch 21 and the second receiving end switch 22, connected to the second antenna pair 20, are switched synchronously. The third transmitting end switch 31 and the third receiving end switch 32, connected to the third antenna pair 30, are switched synchronously.

[0028] Aside from using the control circuit 6 to synchronously switch the opening and closing of the receiving end antenna and the transmitting end antenna, in other embodiments, the control circuit may be omitted, and the opening and closing of the receiving end antenna and the transmitting end antenna may be synchronously switched by a time synchronization method.

[0029] Figure 2 is a schematic diagram of the main beam of the antenna system in Figure 1. As shown in conjunction with Figures 1 and 2, multiple regions are appropriately arranged according to the seating arrangement of the vehicle V. For example, inside the vehicle V, the first region R1, the second region R2, and the third region R3 are arranged in order from the front to the rear, with the second region R2 located between the first region R1 and the third region R3. In the first region R1, multiple seats (not shown) are arranged from the left side to the right side of the vehicle V, in the second region R2, multiple seats are arranged from the left side to the right side of the vehicle V, and in the third region R3, multiple seats are arranged from the left side to the right side of the vehicle V. The first antenna pair 10, the second antenna pair 20, and the third antenna pair 30 are located in the first region R1, the second region R2, and the third region R3, respectively.

[0030] When the first transmitting end switch 11 and the first receiving end switch 12 are in a conductive state, the second transmitting end switch 21, the second receiving end switch 22, the third transmitting end switch 31, and the third receiving end switch 32 are in a closed state. At this time, the main beam W1 of the first transmitting end antenna 101 passes through the first region R1, the main beam W2 of the first receiving end antenna 102 passes through the first region R1, and the main beams W1 and W2 overlap in the first region R1.

[0031] The first receiving antenna 102 receives the first Wi-Fi signal from the first transmitting antenna 101. The first receiving antenna 102 transmits the first Wi-Fi signal to the wireless receiving circuit 5.

[0032] When the wireless receiving circuit 5 receives the first Wi-Fi signal, the channel state information acquisition circuit of the wireless receiving circuit 5 acquires the first channel state information of the first Wi-Fi signal. The first channel state information is related to the first spatial information of the first region R1. Specifically, when the first spatial information of the first region R1 changes, the first channel state information also changes accordingly.

[0033] The wireless receiving circuit 5 is connected to host H via a network and transmits first channel state information to host H. Host H is, for example, a computer or a server. Host H analyzes the first channel state information and obtains first spatial information of the first region R1.

[0034] When the second transmitting end switch 21 and the second receiving end switch 22 are in a conductive state, the first transmitting end switch 11, the first receiving end switch 12, the third transmitting end switch 31, and the third receiving end switch 32 are in a closed state. At this time, the main beam W3 of the second transmitting end antenna 201 passes through the second region R2, and the main beam W4 of the second receiving end antenna 202 passes through the second region R2, and the main beams W3 and W4 overlap in the second region R2.

[0035] The second receiving antenna 202 receives the second Wi-Fi signal from the second transmitting antenna 201. The second receiving antenna 202 transmits the second Wi-Fi signal to the wireless receiving circuit 5.

[0036] The wireless receiving circuit 5 acquires the second channel state information of the second Wi-Fi signal. The second channel state information is related to the second spatial information of the second region R2. The host H analyzes the second channel state information and acquires the second spatial information of the second region R2.

[0037] When the third transmitting end switch 31 and the third receiving end switch 32 are in a conductive state, the first transmitting end switch 11, the first receiving end switch 12, the second transmitting end switch 21, and the second receiving end switch 22 are in a closed state. At this time, the main beam W5 of the third transmitting end antenna 301 passes through the third region R3, and the main beam W6 of the third receiving end antenna 302 passes through the third region R3, and the main beams W5 and W6 overlap in the third region R3.

[0038] The third receiving antenna 302 receives the third Wi-Fi signal from the third transmitting antenna 301. The third receiving antenna 302 transmits the third Wi-Fi signal to the wireless receiving circuit 5.

[0039] The wireless receiving circuit 5 acquires the third channel state information of the third Wi-Fi signal. The third channel state information is related to the third spatial information of the third region R3. The host H analyzes the third channel state information and acquires the third spatial information of the third region R3.

[0040] As an example of a channel state information analysis method, host H converts the channel state information into electromagnetic wave amplitude and phase, and determines the seating information of each seat within the region based on the amplitude and phase. Specifically, the seating information includes empty seats, seats occupied by adults, and seats occupied by children.

[0041] As can be seen from the main beam diagram in Figure 2, when the first antenna pair 10, the second antenna pair 20, and the third antenna pair 30 are switched and used, the effect of dividing the interior space of the vehicle V into a first region R1, a second region R2, and a third region R3 is achieved, thereby acquiring first spatial information for the first region R1, second spatial information for the second region R2, and third spatial information for the third region R3.

[0042] Figures 3A and 3B are flowcharts of one embodiment of the antenna detection method according to the present invention. The antenna detection method of Figures 3A and 3B may also be performed using the antenna system of Figure 1.

[0043] As shown in Figures 3A and 3B, in step S301, the first transmitting end switch 11 and the first receiving end switch 12 are in a conductive state, while the second transmitting end switch 21, the second receiving end switch 22, the third transmitting end switch 31, and the third receiving end switch 32 are in an interrupted state.

[0044] In step S302, the wireless transmission circuit 4 outputs a first Wi-Fi signal, and the first transmitting end antenna 101 transmits the first Wi-Fi signal toward the first region R1.

[0045] In step S303, the first receiving antenna 102 receives the first Wi-Fi signal and transmits the first Wi-Fi signal to the wireless receiving circuit 5.

[0046] In step S304, the wireless receiving circuit 5 acquires the first channel status information of the first Wi-Fi signal.

[0047] In step S305, the control circuit 6 synchronously switches the first transmitting end switch 11 and the first receiving end switch 12 from a conductive state to an interrupted state.

[0048] In step S306, the control circuit 6 synchronously switches the second transmitting end switch 21 and the second receiving end switch 22 from the off state to the conductive state.

[0049] In step S307, the wireless transmission circuit 4 outputs a second Wi-Fi signal, and the second transmitting end antenna 201 transmits the second Wi-Fi signal toward the second region R2.

[0050] In step S308, the second receiving antenna 202 receives the second Wi-Fi signal and transmits the second Wi-Fi signal to the wireless receiving circuit 5.

[0051] In step S309, the wireless receiving circuit 5 acquires the second channel status information of the second Wi-Fi signal.

[0052] In step S310, the control circuit 6 synchronously switches the second transmitting end switch 21 and the second receiving end switch 22 from a conductive state to an interrupted state.

[0053] In step S311, the control circuit 6 switches the third transmitting end switch 31 and the third receiving end switch 32 from the off state to the conductive state in synchronization.

[0054] In step S312, the wireless transmission circuit 4 outputs a third Wi-Fi signal, and the third transmitting end antenna 301 transmits the third Wi-Fi signal toward the third region R3.

[0055] In step S313, the third receiving antenna 302 receives the third Wi-Fi signal and transmits the third Wi-Fi signal to the wireless receiving circuit 5.

[0056] In step S314, the wireless receiving circuit 5 acquires the third channel status information of the third Wi-Fi signal and returns to step S301.

[0057] Figure 4 is a schematic diagram of a second embodiment of the antenna system according to the present invention. The differences between Figure 4 and Figure 1 are as follows.

[0058] The first transmitting end antenna 101, the second transmitting end antenna 201, and the third transmitting end antenna 301 are provided on the first circuit board M1, and the first receiving end antenna 102, the second receiving end antenna 202, and the third receiving end antenna 302 are provided on the second circuit board M2. The first transmitting end switch 11, the second transmitting end switch 21, the third transmitting end switch 31, and the wireless transmitting circuit 4 are provided on the third circuit board M3, and the first receiving end switch 12, the second receiving end switch 22, the third receiving end switch 32, and the wireless receiving circuit 5 are provided on the fourth circuit board M4.

[0059] Figure 5 is a schematic diagram of the main beam of the antenna system shown in Figure 4. As shown in Figure 5, the main beam W1 of the first transmitting end antenna 101 passes through the first region R1 and the second region R2, and the main beam W2 of the first receiving end antenna 102 passes through the first region R1 and the second region R2, with the main beams W1 and W2 overlapping in the first region R1.

[0060] The main beam W3 of the second transmitting antenna 201 passes through the second region R2, and the main beam W4 of the second receiving antenna 202 also passes through the second region R2, so that the main beams W3 and W4 overlap in the second region R2.

[0061] The main beam W5 of the third transmitting antenna 301 passes through the second region R2 and the third region R, and the main beam W6 of the third receiving antenna 302 passes through the second region R2 and the third region R3, with the main beams W5 and W6 overlapping in the third region R3.

[0062] Preferably, the first antenna pair 10, the second antenna pair 20, and the third antenna pair 30 may all be directional antennas, or some of them may be directional antennas.

[0063] When the first transmitting end antenna 101, the second transmitting end antenna 201, and the third transmitting end antenna 301 are used as directional antennas, each of the first transmitting end antenna 101, the second transmitting end antenna 201, and the third transmitting end antenna 301 may have a signal transmission direction (for example, the direction indicated by the main beam in the antenna pattern may be the signal transmission direction).

[0064] There is a first angle A1 between the signal transmission directions of the first transmitting end antenna 101 and the second transmitting end antenna 201, and a second angle A2 between the signal transmission directions of the third transmitting end antenna 301 and the second transmitting end antenna 201. The first angle A1 may be equal to or approximate the second angle A2.

[0065] There is a third angle A3 between the signal transmission directions of the first receiving end antenna 102 and the second receiving end antenna 202, and a fourth angle A4 between the signal transmission directions of the third receiving end antenna 302 and the second receiving end antenna 202. The third angle A3 may be equal to or approximate the fourth angle A4.

[0066] As can be seen from the main beam diagram in Figure 5, when the first antenna pair 10, the second antenna pair 20, and the third antenna pair 30 are switched and used, the effect of dividing the interior space of the vehicle V into a first region R1, a second region R2, and a third region R3 can be achieved.

[0067] This makes it possible to reduce the cost of antenna assembly and the cost of the antenna itself.

[0068] Figure 6 is a schematic diagram of a third embodiment of the antenna system according to the present invention. The differences between Figure 6 and Figure 1 are as follows.

[0069] The first antenna pair 10, the second antenna pair 20, the third antenna pair 30, the first transmitting end switch 11, the second transmitting end switch 21, the third transmitting end switch 31, the first receiving end switch 12, the second receiving end switch 22, the third receiving end switch 32, the wireless transmitting circuit 4, and the wireless receiving circuit 5 are provided on the first circuit board M1. The wireless transmitting circuit 4 and the wireless receiving circuit 5 may share the same central processing unit.

[0070] Figure 7 is a schematic diagram of the main beam of the antenna system shown in Figure 6. As shown in Figure 6, the main beam W1 of the first transmitting end antenna 101 passes through the first region R1 and the second region R2, and the main beam W2 of the first receiving end antenna 102 passes through the first region R1 and the second region R2.

[0071] The main beam W3 of the second transmitting antenna 201 passes through the second region R2, and the main beam W4 of the second receiving antenna 202 also passes through the second region R2.

[0072] The main beam W5 of the third transmitting antenna 301 passes through the second region R2 and the third region R3, and the main beam W6 of the third receiving antenna 302 passes through the second region R2 and the third region R3.

[0073] When used as a directional antenna, there is a fifth angle A5 between the signal transmission directions of the first transmitting end antenna 101 and the second transmitting end antenna 201, and a sixth angle A6 between the signal transmission directions of the third transmitting end antenna 301 and the second transmitting end antenna 201. The fifth angle A5 may be equal to or approximate the sixth angle A6.

[0074] There is a seventh angle A7 between the signal transmission directions of the first receiving end antenna 102 and the second receiving end antenna 202, and an eighth angle A8 between the signal transmission directions of the third receiving end antenna 302 and the second receiving end antenna 202. The seventh angle A7 may be equal to or approximate the eighth angle A8.

[0075] As can be seen from the main beam diagram in Figure 7, when the first antenna pair 10, the second antenna pair 20, and the third antenna pair 30 are switched and used, the effect of partitioning the interior space of the vehicle V into a first region R1, a second region R2, and a third region R3 can be achieved. This reduces the cost of antenna assembly and the cost of the antennas themselves.

[0076] Figure 8 is a schematic diagram of a first embodiment of the antenna device according to the present invention. As shown together in Figures 1 and 8, the antenna device in Figure 8 is part of the antenna system in Figure 1.

[0077] The antenna device comprises a first transmitting end antenna 101, a second transmitting end antenna 201, a third transmitting end antenna 301, a first transmitting end switch 11, a second transmitting end switch 21, a third transmitting end switch 31, a wireless transmission circuit 4, and a control circuit 6.

[0078] The first transmitting end antenna 101, the second transmitting end antenna 201, and the third transmitting end antenna 301 are all directional antennas. The first transmitting end antenna 101, the second transmitting end antenna 201, and the third transmitting end antenna 301 are provided on the first circuit board M1, the second circuit board M2, and the third circuit board M3, respectively.

[0079] The first transmitter switch 11, the second transmitter switch 21, the third transmitter switch 31, and the wireless transmission circuit 4 are provided on the fourth circuit board M4. The first transmitter switch 11, the second transmitter switch 21, and the third transmitter switch 31 are connected to the first transmitter antenna 101, the second transmitter antenna 201, and the third transmitter antenna 301, respectively. The wireless transmission circuit 4 is a Wi-Fi signal transmission circuit. The wireless transmission circuit 4 is connected to the first transmitter switch 11, the second transmitter switch 21, and the third transmitter switch 31. The control circuit 6 is connected to the first transmitter switch 11, the second transmitter switch 21, and the third transmitter switch 31.

[0080] The control circuit 6 sequentially switches the first transmitting end switch 11, the second transmitting end switch 21, and the third transmitting end switch 31. As a result, the first transmitting end antenna 101, the second transmitting end antenna 201, and the third transmitting end antenna 301 sequentially transmit the first Wi-Fi signal, the second Wi-Fi signal, and the third Wi-Fi signal.

[0081] Figure 9 is a schematic diagram of a second embodiment of the antenna device according to the present invention. The differences between Figure 9 and Figure 8 are as follows.

[0082] The first transmitting end antenna 101, the second transmitting end antenna 201, and the third transmitting end antenna 301 are provided on the first circuit board M1. The first transmitting end switch 11, the second transmitting end switch 21, the third transmitting end switch 31, and the wireless transmission circuit 4 are provided on the second circuit board M2.

[0083] A first angle A1 exists between the signal transmission directions of the first transmitting end antenna 101 and the second transmitting end antenna 201. Similarly, a second angle A2 exists between the signal transmission directions of the third transmitting end antenna 301 and the second transmitting end antenna 201. The first angle A1 may be equal to or approximate the second angle A2. This reduces the cost of antenna assembly and the cost of the antenna body.

[0084] Figure 10 is a schematic diagram of a third embodiment of the antenna device according to the present invention. The differences between Figure 10 and Figure 8 are as follows: The first transmitting end antenna 101, the second transmitting end antenna 201, the third transmitting end antenna 301, the first transmitting end switch 11, the second transmitting end switch 21, the third transmitting end switch 31, and the wireless transmitting circuit 4 are provided on the first circuit board M1. There is a first angle A1 between the signal transmission directions of the first transmitting end antenna 101 and the second transmitting end antenna 201. There is a second angle A2 between the signal transmission directions of the third transmitting end antenna 301 and the second transmitting end antenna 201. The first angle A1 is equal to the second angle A2. This makes it possible to reduce the cost of antenna assembly. Beneficial effects of the embodiment

[0085] One of the beneficial effects of the present invention is that the antenna system, antenna detection method, and antenna device provided by the present invention can acquire channel state information for each region in a field, and based on the analysis of the channel state information, spatial information for each region can be acquired. Using the spatial information for each region, it becomes possible to confirm whether a person present in each region is a child or an adult and to confirm the person's location, while simultaneously reducing the complexity of the algorithm.

[0086] Another beneficial effect of the present invention is that the antenna system, antenna detection method, and antenna device provided by the present invention can be applied to the in-vehicle environment, and by configuring multiple pairs of antennas and using Wi-Fi sensing technology, the in-vehicle environment can be partitioned to acquire channel state information for each area, and the location and combination of passengers in each area can be confirmed.

[0087] The information disclosed herein represents only preferred embodiments of the present invention and does not limit the scope of the claims. Accordingly, all equivalent technical modifications made using the specification and drawings of the present invention are included within the scope of the claims. [Explanation of Symbols]

[0088] 10: First antenna pair 101: First transmitting end antenna 102: First receiving end antenna 11: First Transmitter End Switch 12: First receiving end switch 20: Second antenna pair 201: Second transmitting end antenna 202: Second receiving end antenna 21: Second Transmitter End Switch 22: Second receiving end switch 30: Third antenna pair 301: Third transmitting end antenna 302: Third receiving end antenna 31: Third Transmitter End Switch 32: Third receiving end switch 4: Wireless transmission circuit 5: Wireless receiving circuit 6: Control circuit M1: First circuit board M2: 2nd circuit board M3: Third Circuit Board M4: 4th Circuit Board M5: Fifth circuit board M6: 6th circuit board M7: Circuit board #7 M8: 8th circuit board V: Vehicle R1: 1st area R2: 2nd area R3: Third area A1: First angle A2:Second angle A3: Third angle A4: 4th angle A5: 5th angle A6: 6th angle A7: 7th angle A8: 8th angle W1~W6: Main beam H: Host

Claims

1. An antenna system for field use, The aforementioned antenna system is Each of these consists of multiple pairs of antennas, including a transmitting antenna and a receiving antenna. Multiple transmitting end switches connected to each of the multiple transmitting end antennas, Multiple receiving end switches connected to each of the multiple receiving end antennas, A wireless receiving circuit connected to a plurality of the aforementioned receiving terminal switches, Equipped with, Multiple transmitting end switches and multiple receiving end switches are switched sequentially, and the transmitting end switches and receiving end switches connected to the same antenna pair are switched synchronously. The wireless receiving circuit is configured to sequentially receive multiple wireless signals, each containing multiple pieces of spatial information from multiple regions of the field. An antenna system characterized by the following features.

2. The system further comprises a wireless transmission circuit connected to a plurality of the transmitting terminal switches, the wireless transmission circuit being a Wi-Fi signal transmission circuit, the wireless reception circuit being a Wi-Fi signal reception circuit, the wireless reception circuit acquiring a plurality of channel state information of the plurality of wireless signals, and the plurality of channel state information each relating to a plurality of spatial information, The antenna system according to claim 1.

3. The multiple transmitting end antennas and the multiple receiving end antennas are all directional antennas. The antenna system according to claim 1.

4. Each of the aforementioned wireless signals is a Wi-Fi signal, the field is inside the vehicle, and the wireless receiving circuit receives the Wi-Fi signals within each of the aforementioned areas and acquires the channel status information. The antenna system according to claim 2.

5. The isolation between two adjacent transmitting end antennas is greater than 30 decibels, and the isolation between two adjacent receiving end antennas is greater than 30 decibels. The antenna system according to claim 1.

6. Multiple transmitting end antennas and multiple receiving end antennas are provided on multiple different circuit boards, The antenna system according to claim 1.

7. Multiple transmitting end antennas are provided on the first circuit board, and multiple receiving end antennas are provided on the second circuit board. The antenna system according to claim 1.

8. The wireless transmission circuit is further provided, and the multiple transmitting end antennas, multiple receiving end antennas, multiple transmitting end switches, multiple receiving end switches, the wireless transmission circuit and the wireless receiving circuit are provided on the first circuit board. The antenna system according to claim 1.

9. The system further comprises a control circuit connected to a plurality of the transmitting end switches and a plurality of the receiving end switches. The antenna system according to claim 1.

10. An antenna detection method applicable to the field, The aforementioned antenna detection method is: Multiple pairs of antennas are arranged, each of which includes a transmitting end antenna and a receiving end antenna, and the transmitting end antenna and the receiving end antenna of each antenna pair are connected to a transmitting end switch and a receiving end switch, respectively. Multiple transmitting end switches and multiple receiving end switches are switched sequentially, and the transmitting end switches and receiving end switches connected to the same antenna pair are switched synchronously, Using multiple transmitting antennas, multiple wireless signals are sequentially transmitted to multiple receiving antennas. The process involves sequentially receiving multiple wireless signals, each containing multiple pieces of spatial information from multiple regions of the field, via a wireless receiving circuit. including, An antenna detection method characterized by the following.

11. The wireless transmission circuit is a Wi-Fi signal transmission circuit, and the wireless reception circuit is a Wi-Fi signal reception circuit. The antenna detection method according to claim 10.

12. Multiple pairs of antennas are provided in each of the multiple regions, The antenna detection method according to claim 10.

13. The multiple transmitter terminal switches are switched at multiple switching timings, and the same time interval is maintained between the multiple switching timings. The antenna detection method according to claim 10.

14. Wireless transmission circuit and Multiple transmitting end switches connected to the aforementioned wireless transmitting circuit, Multiple transmitting end antennas connected to each of the multiple transmitting end switches, Equipped with, Multiple of the aforementioned transmitting terminal switches are configured to be switched sequentially. An antenna device characterized by the following features.

15. The aforementioned wireless transmission circuit is a Wi-Fi signal transmission circuit. The antenna device according to claim 14.

16. The multiple transmitting end antennas are all directional antennas. The antenna device according to claim 14.

17. Multiple transmitting end antennas are provided on multiple different circuit boards, The antenna device according to claim 14.

18. Multiple of the aforementioned transmitting end antennas are provided on a circuit board. The antenna device according to claim 14.

19. The wireless transmission circuit, the plurality of transmission end switches, and the plurality of transmission end antennas are provided on the same circuit board. The antenna device according to claim 14.

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