Antenna system, antenna detection method, and antenna device

Abstract

The invention provides an antenna system, an antenna detection method and an antenna device. 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 comprises a transmitting end antenna and a receiving end antenna, the plurality of transmitting end switches are respectively coupled with the plurality of transmitting end antennas, and the plurality of receiving end switches are respectively coupled with the plurality of receiving end antennas; the wireless receiving circuit is coupled to a plurality of receiving end switches; the plurality of transmitting end switches and the plurality of receiving end switches are sequentially switched, and the transmitting end switches and the receiving end switches coupled to the same antenna pair are synchronously switched; the wireless receiving circuit is configured to sequentially receive a plurality of wireless signals, and the plurality of wireless signals comprise a plurality of pieces of spatial information of a plurality of regions of a field domain. The antenna system, the antenna detection method and the antenna device provided by the invention can confirm that the personnel in each area belong to children or adults and the positions of the personnel, and reduce the complexity of an algorithm at the same time.

Description

Technical Field

[0001] This invention relates to the field of communications, and in particular to an antenna system, an antenna detection method, and an antenna device. Background Technology

[0002] Wi-Fi signal sensing technology is increasingly being used to detect whether children are riding in a vehicle. However, beyond simply detecting whether children are in the vehicle, a more practical need is to detect the exact location of the child.

[0003] Multiple-input multiple-output (MIMO) systems are antenna switching systems. Because MIMO systems have multiple antennas at both the input and output ends, they improve the diversity of Wi-Fi signals, but also increase the complexity of the algorithm. Furthermore, since MIMO systems cannot obtain precise spatial information within the field, they cannot accurately determine the location of a child.

[0004] Therefore, there is a need to provide an antenna system, an antenna detection method, and an antenna device to meet the above requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an antenna system, an antenna detection method, and an antenna device in light of the prior art.

[0006] To address the aforementioned technical problems, one technical solution adopted by this invention is to provide an antenna system applicable to a field. The antenna system includes multiple antenna pairs, multiple transmitter switches, multiple receiver switches, and a wireless receiving circuit. Each antenna pair includes a transmitter antenna and a receiver antenna. Multiple transmitter switches are respectively coupled to multiple transmitter antennas, and multiple receiver switches are respectively coupled to multiple receiver antennas. The wireless receiving circuit is coupled to the multiple receiver switches. The multiple transmitter switches and multiple receiver switches are configured to be switched sequentially, and transmitter switches and receiver switches coupled to the same antenna pair are switched synchronously. The wireless receiving circuit is configured to sequentially receive multiple wireless signals, and the multiple wireless signals respectively contain multiple spatial information from multiple regions of the field.

[0007] To address the aforementioned technical problems, another technical solution adopted by this invention is to provide an antenna detection method applicable to a field. The antenna detection method includes: configuring multiple antenna pairs, each antenna pair comprising a transmitting antenna and a receiving antenna, wherein the transmitting antenna and the receiving antenna of each antenna pair are respectively coupled to a transmitting switch and a receiving switch; the multiple transmitting switches and the multiple receiving switches are sequentially switched, and the transmitting switches and receiving switches coupled to the same antenna pair are switched synchronously; multiple wireless signals are sequentially transmitted from the multiple transmitting antennas to the multiple receiving antennas; and multiple wireless signals are sequentially received via a wireless receiving circuit, wherein each of the multiple wireless signals contains multiple spatial information of multiple regions within the field.

[0008] To address the aforementioned technical problems, another technical solution adopted by the present invention is to provide an antenna device, which includes a wireless transmitting circuit, a plurality of transmitting switches, and a plurality of transmitting antennas. The plurality of transmitting switches are coupled to the wireless transmitting circuit, and the plurality of transmitting antennas are respectively coupled to the plurality of transmitting switches. The plurality of transmitting switches are configured to be switched sequentially.

[0009] One of the beneficial effects of this invention is that, through the antenna system, antenna detection method, and antenna device provided by this invention, spatial information of each area within a field can be obtained. Based on the spatial information of each area, it is possible to determine whether a person within that area is a child or an adult, and their location, while also reducing the complexity of the algorithm.

[0010] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a first embodiment of the antenna system provided by the present invention.

[0012] Figure 2 for Figure 1 A schematic diagram of the main beam of the antenna system.

[0013] Figure 3 This is a flowchart of an embodiment of the antenna detection method provided by the present invention.

[0014] Figure 4 This is a schematic diagram of a second embodiment of the antenna system provided by the present invention.

[0015] Figure 5 for Figure 4 A schematic diagram of the main beam of the antenna system.

[0016] Figure 6This is a schematic diagram of a third embodiment of the antenna system provided by the present invention.

[0017] Figure 7 for Figure 6 A schematic diagram of the main beam of the antenna system.

[0018] Figure 8 This is a schematic diagram of a first embodiment of the antenna device provided by the present invention.

[0019] Figure 9 This is a schematic diagram of a second embodiment of the antenna device provided by the present invention.

[0020] Figure 10 This is a schematic diagram of a third embodiment of the antenna device provided by the present invention.

[0021] Explanation of key component symbols:

[0022] 10 First antenna pair

[0023] 101 First transmitting antenna

[0024] 102 First receiving antenna

[0025] 11 First transmitter switch

[0026] 12 First receiver switch

[0027] 20 Second antenna pairs

[0028] 201 Second transmitting antenna

[0029] 202 Second receiving antenna

[0030] 21 Second transmitter switch

[0031] 22 Second receiver switch

[0032] 30 Third antenna pairs

[0033] 301 Third Transmitter Antenna

[0034] 302 Third Receiver Antenna

[0035] 31 Third transmitter switch

[0036] 32 Third receiver switch

[0037] 4. Wireless Transmitting Circuit

[0038] 5. Wireless receiving circuit

[0039] 6. Control Circuit

[0040] M1 First Circuit Board

[0041] M2 Second Circuit Board

[0042] M3 Third Circuit Board

[0043] M4 Fourth Circuit Board

[0044] M5 Fifth Circuit Board

[0045] M6 Sixth Circuit Board

[0046] M7 Seventh Circuit Board

[0047] M8 Eighth Circuit Board

[0048] V vehicle

[0049] R1 First Area

[0050] R2 Second Region

[0051] R3 Third Region

[0052] A1 First included angle

[0053] A2 Second included angle

[0054] A3 Third Angle

[0055] A4 fourth angle

[0056] A5 Fifth Angle

[0057] A6 Sixth Angle

[0058] A7 Seventh Angle

[0059] A8 Eighth Angle

[0060] W1~W6 main beams

[0061] H host Detailed Implementation

[0062] The following specific embodiments illustrate the implementation of the "antenna system, antenna detection method, and antenna device" disclosed in this invention. Those skilled in the art can understand the advantages and effects of this invention from the content disclosed in this specification. This invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this invention. Furthermore, the accompanying drawings of this invention are for simple illustrative purposes only and are not depictions of actual dimensions; this is stated beforehand. The following embodiments will further describe the relevant technical content of this invention in detail, but the disclosed content is not intended to limit the scope of protection of this invention.

[0063] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the associated listed items.

[0064] Figure 1 This is a schematic diagram of a first embodiment of the antenna system provided by the present invention. Figure 1 As shown, the antenna system includes a first antenna pair 10, a first transmitter switch 11, a first receiver switch 12, a second antenna pair 20, a second transmitter switch 21, a second receiver switch 22, a third antenna pair 30, a third transmitter switch 31, a third receiver switch 32, a wireless transmitting circuit 4, a wireless receiving circuit 5, and a control circuit 6. The antenna system of this embodiment is applicable to the interior of a vehicle V and is installed on the ceiling inside the vehicle; however, the applicable areas of the antenna system of this invention are not limited to this. For example, the antenna system of this invention is also applicable to warehouses, offices, conference rooms, or rooms. The first antenna pair 10 includes a first transmitter antenna 101 and a first receiver antenna 102, which are two directional antennas. A directional antenna is an antenna with directional or angular pointing characteristics. Generally, the gain of a directional antenna is at least 10 dBi greater than the gain of a non-directional antenna, or approximately 10 dB.

[0065] The first transmitting antenna 101 and the first receiving antenna 102 are respectively disposed on the first circuit board M1 and the second circuit board M2. The first transmitting antenna 101 is coupled to the first transmitting switch 11, and the first receiving antenna 102 is coupled to the first receiving switch 12.

[0066] The second antenna pair 20 includes a second transmitting antenna 201 and a second receiving antenna 202. The second transmitting antenna 201 and the second receiving antenna 202 are two directional antennas and are respectively disposed on the third circuit board M3 and the fourth circuit board M4. The second transmitting antenna 201 is coupled to the second transmitting switch 21, and the second receiving antenna 202 is coupled to the second receiving switch 22.

[0067] The third antenna pair 30 includes a third transmitting antenna 301 and a third receiving antenna 302. The third transmitting antenna 301 and the third receiving antenna 302 are two directional antennas and are respectively disposed on the fifth circuit board M5 and the sixth circuit board M6. The third transmitting antenna 301 is coupled to the third transmitting switch 31, while the third receiving antenna 302 is coupled to the third receiving switch 32.

[0068] By designing the antenna shape or the distance between two antennas, the isolation between the first transmitting antenna 101 and the second transmitting antenna 201 is greater than 30 dB, the isolation between the second transmitting antenna 201 and the third transmitting antenna 301 is greater than 30 dB, the isolation between the first receiving antenna 102 and the second receiving antenna 202 is greater than 30 dB, and the isolation between the second receiving antenna 202 and the third receiving antenna 302 is greater than 30 dB.

[0069] The wireless transmitting circuit 4, the first transmitting switch 11, the second transmitting switch 21, and the third transmitting switch 31 are disposed on the seventh circuit board M7, and the output terminal of the wireless transmitting circuit 4 is coupled to the first transmitting switch 11, the second transmitting switch 21, and the third transmitting switch 31. The wireless transmitting circuit 4 may include, for example, a central processing unit, a radio frequency processing circuit, a channel status information acquisition circuit, and a network interface.

[0070] The wireless transmitting circuit 4 can be, for example, an antenna driving circuit, configured to drive a corresponding antenna to transmit a wireless signal, such as a Wi-Fi signal, a Bluetooth signal, or infrared light. In this embodiment, the wireless signal is a Wi-Fi signal, and the wireless transmitting circuit 4 is a Wi-Fi signal transmitting circuit.

[0071] A wireless receiving circuit 5, a first receiving switch 12, a second receiving switch 22, and a third receiving switch 32 are disposed on an eighth circuit board M8, and the input terminal of the wireless receiving circuit 5 is coupled to the first receiving switch 12, the second receiving switch 22, and the third receiving 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.

[0072] The wireless transmitting circuit 4 and the wireless receiving circuit 5 are respectively in station mode and access point mode, or respectively in access point mode and station mode.

[0073] The wireless receiving circuit 5 is configured to transmit a wireless signal. The wireless signal may be, for example, a Wi-Fi signal, a Bluetooth signal, or infrared light. In this embodiment, the wireless signal is a Wi-Fi signal, and the wireless receiving circuit 5 is a Wi-Fi signal receiving circuit.

[0074] The first circuit board M1, the third circuit board M3, the fifth circuit board M5 and the seventh circuit board M7 are disposed, for example, in the left side region of the vehicle interior ceiling, while the second circuit board M2, the fourth circuit board M4, the sixth circuit board M6 and the eighth circuit board M8 are disposed, for example, in the right side region of the vehicle interior ceiling.

[0075] The control circuit 6 is coupled to the first transmitter switch 11, the first receiver switch 12, the second transmitter switch 21, the second receiver switch 22, the third transmitter switch 31, and the third receiver switch 32. The first transmitter switch 11, the first receiver switch 12, the second transmitter switch 21, the second receiver switch 22, the third transmitter switch 31, and the third receiver switch 32 are, for example, mechanical switches, solenoid valve switches, or transistor switches.

[0076] The control circuit 6 is configured to sequentially switch the first transmitter switch 11, the second transmitter switch 21, and the third transmitter switch 31 at multiple switching times, and the control circuit 6 is configured to sequentially switch the first receiver switch 12, the second receiver switch 22, and the third receiver switch 32 at multiple switching times.

[0077] Ideally, the multiple switching times have the same time interval, in other words, the switching is regular.

[0078] The first transmitter switch 11 and the first receiver switch 12 coupled to the first antenna pair 10 are switched synchronously, the second transmitter switch 21 and the second receiver switch 22 coupled to the second antenna pair 20 are switched synchronously, and the third transmitter switch 31 and the third receiver switch 32 coupled to the third antenna pair 30 are switched synchronously.

[0079] In addition to using control circuit 6 to synchronously switch the receiver antenna and transmitter antenna, in other embodiments, control circuit 6 can be omitted, and time synchronization can be used to synchronously switch the receiver antenna and transmitter antenna.

[0080] Figure 2 for Figure 1 A schematic diagram of the main beam of the antenna system. See also: Figure 1 and Figure 2Based on the seating configuration of vehicle V, multiple areas are appropriately arranged. For example, the interior of vehicle V, from front to rear, is arranged with a first area R1, a second area R2, and a third area R3, with the second area R2 located between the first area R1 and the third area R3. The first area R1 contains multiple seats arranged from the left to the right side of vehicle V (not shown in the figure), the second area R2 contains multiple seats arranged from the left to the right side of vehicle V, and the third area R3 contains multiple seats arranged from the left to the right side of vehicle V. The first antenna pair 10, the second antenna pair 20, and the third antenna pair 30 are located in the first area R1, the second area R2, and the third area R3, respectively.

[0081] When the first transmitter switch 11 and the first receiver switch 12 are in the ON state, the second transmitter switch 21, the second receiver switch 22, the third transmitter switch 31, and the third receiver switch 32 are in the OFF state. At this time, the main beam W1 of the first transmitter antenna 101 passes through the first region R1, and the main beam W2 of the first receiver antenna 102 passes through the first region R1, with the main beams W1 and W2 overlapping in the first region R1.

[0082] The first receiving antenna 102 receives the first Wi-Fi signal from the first transmitting antenna 101, and the first receiving antenna 102 transmits the first Wi-Fi signal to the wireless receiving circuit 5.

[0083] When the wireless receiving circuit 5 receives the first Wi-Fi signal, the channel state information acquisition circuit of the wireless receiving circuit 5 obtains the first channel state information of the first Wi-Fi signal, and the first channel state information is associated with 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.

[0084] The wireless receiving circuit 5 is network-connected to the host H and transmits first channel status information to the host H, where the host H is, for example, a computer or a server. The host H analyzes the first channel status information to obtain first spatial information of the first area R1.

[0085] When the second transmitter switch 21 and the second receiver switch 22 are in the ON state, the first transmitter switch 11, the first receiver switch 12, the third transmitter switch 31, and the third receiver switch 32 are in the OFF state. At this time, the main beam W3 of the second transmitter antenna 201 passes through the second region R2, and the main beam W4 of the second receiver antenna 202 passes through the second region R2, with the main beams W3 and W4 overlapping in the second region R2.

[0086] The second receiving antenna 202 receives the second Wi-Fi signal from the second transmitting antenna 201, and the second receiving antenna 202 transmits the second Wi-Fi signal to the wireless receiving circuit 5.

[0087] The wireless receiving circuit 5 obtains the second channel status information of the second Wi-Fi signal, and the second channel status information is associated with the second spatial information of the second region R2. The host H analyzes the second channel status information to obtain the second spatial information of the second region R2.

[0088] When the third transmitter switch 31 and the third receiver switch 32 are in the ON state, the first transmitter switch 11, the first receiver switch 12, the second transmitter switch 21, and the second receiver switch 22 are in the OFF state. At this time, the main beam W5 of the third transmitter antenna 301 passes through the third region R3, and the main beam W6 of the third receiver antenna 302 passes through the third region R3, with the main beams W5 and W6 overlapping in the third region R3.

[0089] The third receiving antenna 302 receives the third Wi-Fi signal from the third transmitting antenna 301, and the third receiving antenna 302 transmits the third Wi-Fi signal to the wireless receiving circuit 5.

[0090] The wireless receiving circuit 5 obtains the third channel status information of the third Wi-Fi signal, and the third channel status information is associated with the third spatial information in the third region R3. The host H analyzes the third channel status information to obtain the third spatial information in the third region R3.

[0091] Regarding the method of analyzing channel status information, for example, the host H can convert the channel status information into the amplitude and phase of electromagnetic waves, and determine the occupancy status of each seat in the area based on the amplitude and phase. Specifically, the occupancy status includes whether the seat is empty, whether an adult is sitting, or whether a child is sitting.

[0092] Depend on Figure 2 As can be seen from the main beam diagram, when the first antenna pair 10, the second antenna pair 20 and the third antenna pair 30 are used in a switching manner, the space inside the vehicle V can be divided into a first region R1, a second region R2 and a third region R3, thereby obtaining the first spatial information of the first region R1, the second spatial information of the second region R2 and the third spatial information of the third region R3.

[0093] Figure 3 This is a flowchart of an embodiment of the antenna detection method provided by the present invention, and Figure 3 Antenna detection methods can be derived from Figure 1 The antenna system is used to perform this.

[0094] like Figure 3As shown, in step S301, the first transmitter switch 11 and the first receiver switch 12 are configured to be in the on state, and the second transmitter switch 21, the second receiver switch 22, the third transmitter switch 31 and the third receiver switch 32 are configured to be in the off state.

[0095] In step S302, the wireless transmitting circuit 4 outputs a first Wi-Fi signal and the first transmitting antenna 101 transmits the first Wi-Fi signal toward the first region R1.

[0096] 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.

[0097] In step S304, the wireless receiving circuit 5 acquires the first channel status information of the first Wi-Fi signal.

[0098] In step S305, the control circuit 6 synchronously switches the first transmitter switch 11 and the first receiver switch 12 from the on state to the off state.

[0099] In step S306, the control circuit 6 synchronously switches the second transmitter switch 21 and the second receiver switch 22 from the off state to the on state.

[0100] In step S307, the wireless transmitting circuit 4 outputs a second Wi-Fi signal and the second transmitting antenna 201 transmits the second Wi-Fi signal toward the second region R2.

[0101] 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.

[0102] In step S309, the wireless receiving circuit 5 acquires the second channel status information of the second Wi-Fi signal.

[0103] In step S310, the control circuit 6 synchronously switches the second transmitter switch 21 and the second receiver switch 22 from the on state to the off state.

[0104] In step S311, the control circuit 6 synchronously switches the third transmitter switch 31 and the third receiver switch 32 from the off state to the on state.

[0105] In step S312, the wireless transmitting circuit 4 outputs a third Wi-Fi signal and the third transmitting antenna 301 transmits the third Wi-Fi signal toward the third region R3.

[0106] 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.

[0107] In step S314, the wireless receiving circuit 5 acquires the third channel status information of the third Wi-Fi signal, and then returns to step S301.

[0108] Figure 4 This is a schematic diagram of a second embodiment of the antenna system provided by the present invention. Figure 4 and Figure 1 The differences are as follows.

[0109] The first transmitting antenna 101, the second transmitting antenna 201, and the third transmitting antenna 301 are disposed on the first circuit board M1, while the first receiving antenna 102, the second receiving antenna 202, and the third receiving antenna 302 are disposed on the second circuit board M2. The first transmitting switch 11, the second transmitting switch 21, the third transmitting switch 31, and the wireless transmitting circuit 4 are disposed on the third circuit board M3, while the first receiving switch 12, the second receiving switch 22, the third receiving switch 32, and the wireless receiving circuit 5 are disposed on the fourth circuit board M4.

[0110] Figure 5 for Figure 4 A schematic diagram of the main beam of the antenna system. See also... Figure 5 The main beam W1 of the first transmitting antenna 101 passes through the first region R1 and the second region R2, and the main beam W2 of the first receiving antenna 102 passes through the first region R1 and the second region R2, with the main beam W1 and the main beam W2 overlapping in the first region R1.

[0111] 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 passes through the second region R2, with the main beams W3 and W4 overlapping in the second region R2.

[0112] 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, with the main beam W5 and the main beam W6 overlapping in the third region R3.

[0113] Preferably, the first antenna pair 10, the second antenna pair 20, and the third antenna pair 30 can all be directional antennas or some of them can be directional antennas.

[0114] When the first transmitting antenna 101, the second transmitting antenna 201, and the third transmitting antenna 301 are used as directional antennas, each of the first transmitting antenna 101, the second transmitting antenna 201, and the third transmitting antenna 301 may have a signal transmission direction (for example, the direction pointed to by the main beam in the antenna field pattern may be taken as the signal transmission direction).

[0115] The signal transmission directions of the first transmitting antenna 101 and the second transmitting antenna 201 are at a first angle A1, and the signal transmission directions of the third transmitting antenna 301 and the second transmitting antenna 201 are at a second angle A2. The first angle A1 may be equal to or approximately equal to the second angle A2.

[0116] The signal transmission directions of the first receiving antenna 102 and the second receiving antenna 202 are at a third angle A3, and the signal transmission directions of the third receiving antenna 302 and the second receiving antenna 202 are at a fourth angle A4. The third angle A3 may be equal to or approximately equal to the fourth angle A4.

[0117] Depend on Figure 5 As can be seen from the main beam diagram, when the first antenna pair 10, the second antenna pair 20 and the third antenna pair 30 are used in a switching manner, the space inside the vehicle V can also be divided into the first region R1, the second region R2 and the third region R3.

[0118] This can reduce the cost of antenna assembly and the cost of the antenna itself.

[0119] Figure 6 This is a schematic diagram of a third embodiment of the antenna system provided by the present invention. Figure 6 and Figure 1 The differences are as follows.

[0120] The first antenna pair 10, the second antenna pair 20, the third antenna pair 30, the first transmitter switch 11, the second transmitter switch 21, the third transmitter switch 31, the first receiver switch 12, the second receiver switch 22, the third receiver switch 32, the wireless transmitter circuit 4, and the wireless receiver circuit 5 are disposed on the first circuit board M1, wherein the wireless transmitter circuit 4 and the wireless receiver circuit 5 can share the same central processing unit.

[0121] Figure 7 for Figure 6 A schematic diagram of the main beam of the antenna system. See also... Figure 6 The main beam W1 of the first transmitting antenna 101 passes through the first region R1 and the second region R2, and the main beam W2 of the first receiving antenna 102 passes through the first region R1 and the second region R2.

[0122] 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 passes through the second region R2.

[0123] The main beam W5 of the third transmitting antenna 301 passes through the second region R2 and the third region R3, while the main beam W6 of the third receiving antenna 302 passes through the second region R2 and the third region R3.

[0124] When used as a directional antenna, the signal transmission directions of the first transmitting antenna 101 and the second transmitting antenna 201 have a fifth included angle A5, and the signal transmission directions of the third transmitting antenna 301 and the second transmitting antenna 201 have a sixth included angle A6, and the fifth included angle A5 can be equal to or approximately equal to the sixth included angle A6.

[0125] The signal transmission directions of the first receiving antenna 102 and the second receiving antenna 202 are at a seventh angle A7, and the signal transmission directions of the third receiving antenna 302 and the second receiving antenna 202 are at an eighth angle A8. The seventh angle A7 can be equal to or approximately equal to the eighth angle A8.

[0126] Depend on Figure 7 As can be seen from the main beam diagram, when the first antenna pair 10, the second antenna pair 20, and the third antenna pair 30 are used in a switching manner, the interior space of the vehicle V can be divided into a first region R1, a second region R2, and a third region R3. This reduces the cost of antenna assembly and the cost of the chips.

[0127] Figure 8 This is a schematic diagram of a first embodiment of the antenna device provided by the present invention. (See also: [link to related documents]) Figure 1 and Figure 8 As shown, Figure 8 The antenna device is Figure 1 It is part of the antenna system.

[0128] The antenna device includes a first transmitting antenna 101, a second transmitting antenna 201, a third transmitting antenna 301, a first transmitting switch 11, a second transmitting switch 21, a third transmitting switch 31, a wireless transmitting circuit 4, and a control circuit 6.

[0129] The first transmitting antenna 101, the second transmitting antenna 201, and the third transmitting antenna 301 are three directional antennas, and the first transmitting antenna 101, the second transmitting antenna 201, and the third transmitting antenna 301 are respectively disposed on the first circuit board M1, the second circuit board M2, and the third circuit board M3.

[0130] The first transmitter switch 11, the second transmitter switch 21, the third transmitter switch 31, and the wireless transmission circuit 4 are disposed on the fourth circuit board M4. The first transmitter switch 11, the second transmitter switch 21, and the third transmitter switch 31 are respectively coupled to the first transmitter antenna 101, the second transmitter antenna 201, and the third transmitter antenna 301. The wireless transmission circuit 4 is a Wi-Fi signal transmission circuit, and the wireless transmission circuit 4 is coupled to the first transmitter switch 11, the second transmitter switch 21, and the third transmitter switch 31. The control circuit 6 is coupled to the first transmitter switch 11, the second transmitter switch 21, and the third transmitter switch 31.

[0131] The control circuit 6 sequentially switches the first transmitter switch 11, the second transmitter switch 21, and the third transmitter switch 31, so that the first transmitter antenna 101, the second transmitter antenna 201, and the third transmitter antenna 301 sequentially transmit the first Wi-Fi signal, the second Wi-Fi signal, and the third Wi-Fi signal.

[0132] Figure 9 This is a schematic diagram of a second embodiment of the antenna device provided by the present invention. Figure 9 and Figure 8 The differences are as follows.

[0133] The first transmitting antenna 101, the second transmitting antenna 201, and the third transmitting antenna 301 are disposed on the first circuit board M1, while the first transmitting switch 11, the second transmitting switch 21, the third transmitting switch 31, and the wireless transmitting circuit 4 are disposed on the second circuit board M2.

[0134] The signal transmission directions of the first transmitting antenna 101 and the second transmitting antenna 201 are at a first angle A1. Similarly, the signal transmission directions of the third transmitting antenna 301 and the second transmitting antenna 201 are at a second angle A2, and the first angle A1 may be equal to or approximately equal to the second angle A2. This reduces the cost of antenna assembly and the cost of the antenna itself.

[0135] Figure 10 This is a schematic diagram of a third embodiment of the antenna device provided by the present invention, and Figure 10 and Figure 8The difference lies in that the first transmitting antenna 101, the second transmitting antenna 201, the third transmitting antenna 301, the first transmitting switch 11, the second transmitting switch 21, the third transmitting switch 31, and the wireless transmitting circuit 4 are disposed on the first circuit board M1. The signal transmission directions of the first transmitting antenna 101 and the second transmitting antenna 201 have a first angle A1, and the signal transmission directions of the third transmitting antenna 301 and the second transmitting antenna 201 have a second angle A2, where the first angle A1 is equal to the second angle A2. This reduces the cost of antenna assembly.

[0136] [Beneficial Effects of the Examples]

[0137] One of the beneficial effects of this invention is that, through the antenna system, antenna detection method, and antenna device provided by this invention, channel status information of each area within the field can be obtained. Based on the analysis of the channel status information, spatial information of each area can be obtained. Using the spatial information of each area, it is possible to determine whether the person in each area is a child or an adult and their location, while also reducing the complexity of the algorithm.

[0138] 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. By configuring multiple antenna pairs and using WiFi sensing technology, the in-vehicle environment can be partitioned and the channel state information of each area can be obtained, thereby confirming the passenger positions and combinations in each area.

[0139] The content disclosed above is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of protection of the present invention. Therefore, all equivalent technical changes made based on the content of the present invention specification and drawings are included within the scope of the claims of the present invention.

Claims

1. An antenna system adapted to a field, the antenna system comprising: Multiple antenna pairs, each antenna pair including a transmitting antenna and a receiving antenna; Multiple transmitter switches, each of which is coupled to a plurality of transmitter antennas; Multiple receiver switches, each of which is coupled to a plurality of receiver antennas; A wireless receiving circuit, the wireless receiving circuit being coupled to a plurality of receiving end switches; The plurality of transmitting switches and the plurality of receiving switches are switched sequentially, and the transmitting switches and the receiving switches coupled to the same antenna pair are switched synchronously. The wireless receiving circuit is configured to receive multiple wireless signals in sequence, and the multiple wireless signals respectively include multiple spatial information of multiple regions of the field.

2. The antenna system as claimed in claim 1, further comprising a wireless transmitting circuit coupled to a plurality of the transmitting end switches, the wireless transmitting circuit being a Wi-Fi signal transmitting circuit, and the wireless receiving circuit being a Wi-Fi signal receiving circuit, the wireless receiving circuit acquiring multiple channel status information of the plurality of wireless signals, and the plurality of channel status information being respectively associated with multiple spatial information.

3. The antenna system of claim 1, wherein the plurality of transmitting antennas and the plurality of receiving antennas are plurality of directional antennas.

4. The antenna system of claim 2, wherein each of the wireless signals is a Wi-Fi signal, the field is the interior of a vehicle, and the wireless receiving circuit receives the Wi-Fi signals in each of the areas to obtain the channel status information.

5. The antenna system of claim 1, wherein the isolation between two adjacent transmitting antennas is greater than 30 dB, and the isolation between two adjacent receiving antennas is greater than 30 dB.

6. The antenna system of claim 1, wherein the plurality of transmitting antennas and the plurality of receiving antennas are respectively disposed on a plurality of different circuit boards.

7. The antenna system of claim 1, wherein the plurality of transmitting antennas are disposed on a first circuit board, and the plurality of receiving antennas are disposed on a second circuit board.

8. The antenna system of claim 1, further comprising a wireless transmitting circuit, wherein the plurality of transmitting antennas, the plurality of receiving antennas, the plurality of transmitting switches, the plurality of receiving switches, the wireless transmitting circuit, and the wireless receiving circuit are disposed on a first circuit board.

9. The antenna system of claim 1, further comprising a control circuit coupled to the plurality of transmitting switches and the plurality of receiving switches.

10. An antenna detection method, the antenna detection method being applicable to a field, wherein the antenna detection method comprises: Multiple antenna pairs are configured, wherein each antenna pair includes a transmitting antenna and a receiving antenna, and the transmitting antenna and the receiving antenna of each antenna pair are respectively coupled to a transmitting switch and a receiving switch. The plurality of transmitting switches and the plurality of receiving switches are switched sequentially, and the transmitting switches and the receiving switches coupled to the same antenna pair are switched synchronously. Multiple wireless signals are sequentially transmitted from multiple transmitting antennas to multiple receiving antennas; as well as A plurality of wireless signals are received sequentially via a wireless receiving circuit, wherein the plurality of wireless signals respectively include spatial information of a plurality of regions of the field.

11. The antenna detection method as described in claim 10, wherein a wireless transmitting circuit is coupled to a plurality of the transmitting end switches, the wireless transmitting circuit is a Wi-Fi signal transmitting circuit, and the wireless receiving circuit is a Wi-Fi signal receiving circuit.

12. The antenna detection method of claim 10, wherein the plurality of antenna pairs are respectively disposed in the plurality of the regions.

13. The antenna detection method of claim 10, wherein the plurality of transmitting end switches are switched at a plurality of switching times, and the plurality of switching times have the same time interval.

14. An antenna device, the antenna device comprising: A wireless transmitting circuit; Multiple transmitter switches, wherein the multiple transmitter switches are coupled to the wireless transmission circuit; Multiple transmitting antennas, each of the multiple transmitting antennas being respectively coupled to multiple transmitting switches; as well as The plurality of the aforementioned transmitter switches are configured to be switched sequentially.

15. The antenna device of claim 14, wherein the wireless transmitting circuit is a Wi-Fi signal transmitting circuit.

16. The antenna device of claim 14, wherein the plurality of transmitting antennas are respectively a plurality of directional antennas.

17. The antenna device of claim 14, wherein the plurality of transmitting antennas are respectively disposed on a plurality of different circuit boards.

18. The antenna device of claim 14, wherein the plurality of the transmitting antennas are disposed on a circuit board.

19. The antenna device of claim 14, wherein the wireless transmitting circuit, the plurality of transmitting end switches, and the plurality of transmitting end antennas are disposed on the same circuit board.

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