CN115412121A - Intelligent antenna device and control method thereof - Google Patents
Intelligent antenna device and control method thereof Download PDFInfo
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- CN115412121A CN115412121A CN202211019134.9A CN202211019134A CN115412121A CN 115412121 A CN115412121 A CN 115412121A CN 202211019134 A CN202211019134 A CN 202211019134A CN 115412121 A CN115412121 A CN 115412121A
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- 238000005516 engineering process Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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Abstract
The application discloses a smart antenna device and a control method thereof. The smart antenna device is connected with the electronic controller unit and includes: the antenna, the radio frequency connector and the mainboard are provided with a radio frequency switch circuit and a plurality of matching circuits. The radio frequency switch circuit is connected with the electronic controller unit through the radio frequency connector, and at least one of the matching circuits is connected with the antenna based on a control signal from the electronic controller unit so as to control the antenna to receive and transmit the radio frequency signal corresponding to the target frequency band. When the intelligent antenna device enters a channel searching mode, the antenna receives and transmits radio frequency signals of each target frequency band to the electronic controller unit based on different control signals, so that the electronic controller unit transmits a control signal corresponding to a first frequency band to the radio frequency switch circuit, the antenna is controlled to work in the first frequency band, the first frequency band is the frequency band with the minimum packet loss rate in all the target frequency bands, and the packet loss rate of the first frequency band is smaller than a first threshold value.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to an intelligent antenna apparatus and a control method thereof.
Background
Currently, the global automobile industry is dedicated to the development of a close-range precise positioning technology, and therefore, an Ultra-wideband (UWB) antenna using a short-range wireless communication protocol of radio waves is increasingly gaining attention.
Because the application bandwidth coverage of the UWB antenna is very wide (3.1 GHz to 10.6 GHz), and the frequency bands of the UWB antenna adopted by each region, country and each vehicle enterprise have certain differences, the frequency band design of the UWB antenna applied to the vehicle needs to be designed according to different requirements. However, in order to individually design a corresponding UWB antenna to meet local regulations or a specified frequency, there are problems in that the versatility is poor, the design is complicated, and cost reduction by mass production is not possible.
Therefore, how to provide a solution to the above technical problems is a problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the application provides an intelligent antenna device and a control method thereof, which can solve the problems that the existing UWB antenna is designed independently in order to meet local regulations or specified frequencies, the universality is poor, the design is complex, and the cost cannot be reduced through mass production.
In order to solve the technical problem, the present application is implemented as follows:
the present application provides a smart antenna device that is disposed on a vehicle and connected to an Electronic Control Unit (ECU). The smart antenna device includes: the antenna, the radio frequency connector and the mainboard are electrically connected with the antenna and the radio frequency connector, and a radio frequency switch circuit and a plurality of matching circuits are arranged on the mainboard. The radio frequency switch circuit is used for connecting the electronic controller unit through the radio frequency connector, and connecting at least one of the matching circuits with the antenna based on a control signal from the electronic controller unit, so as to control the antenna to receive and transmit the radio frequency signal of the corresponding target frequency band, wherein the combination of all the target frequency bands of the antenna work covers all frequencies from 3.1GHz to 10.6 GHz. When the intelligent antenna device enters a channel searching mode, the antenna receives and transmits radio frequency signals of each target frequency band to the electronic controller unit based on different control signals, so that the electronic controller unit transmits control signals corresponding to a first frequency band to the radio frequency switch circuit, the antenna is controlled to work in the first frequency band, the first frequency band is the frequency band with the minimum packet loss rate in all the target frequency bands, and the packet loss rate of the first frequency band is smaller than a first threshold value.
The application provides a control method of a smart antenna device, which is applied to an electronic controller unit of a vehicle. The control method of the intelligent antenna device comprises the following steps: the method comprises the steps that the intelligent antenna device is set to enter a fixed frequency band mode, and a first control signal is sent to the intelligent antenna device, wherein the intelligent antenna device comprises an antenna, a radio frequency connector and a main board, the main board is electrically connected with the antenna and the radio frequency connector, and a radio frequency switch circuit and a plurality of matching circuits are arranged on the main board; the radio frequency switch circuit receives a first control signal through the radio frequency connector, and connects the corresponding matching circuit with the antenna based on the first control signal, so that the antenna receives and transmits radio frequency signals corresponding to a target frequency band; setting the intelligent antenna device to enter a channel searching mode, and sending different second control signals to the intelligent antenna device; the radio frequency switch circuit receives different second control signals through the radio frequency connector, and connects different matching circuits with the antenna based on the different second control signals to enable the antenna to receive and transmit radio frequency signals of each target frequency band, wherein the combination of all the target frequency bands of the antenna working covers all frequencies from 3.1GHz to 10.6GHz; acquiring the packet loss rate of each target frequency band based on the receiving and sending results of the radio frequency signals of each target frequency band; and selecting the target frequency band with the packet loss rate smaller than a first threshold and the minimum packet loss rate as a first frequency band, and sending a second control signal corresponding to the first frequency band to the radio frequency switch circuit so as to control the antenna to work in the first frequency band through the radio frequency switch circuit.
In the smart antenna device and the control method thereof according to the embodiments of the present application, the corresponding matching circuit is connected to the antenna through the control signal by the radio frequency switch circuit, and the design of the plurality of matching circuits is matched at the same time, so that the combination of all target frequency bands in which the antenna operates covers all frequencies from 3.1GHz to 10.6GHz, and the smart antenna device can be fixed to operate in a desired target frequency band or can adaptively switch the operating frequency band based on the packet loss rate of each current target frequency band. Therefore, the intelligent antenna device can be applied to vehicles in different regions and countries and vehicles produced by each vehicle enterprise, and can solve the problems in the prior art.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram of one embodiment of a smart antenna device coupled to an electronic controller unit of a vehicle according to the present application;
fig. 2 is an exploded view of an embodiment of a smart antenna apparatus according to the present application;
FIG. 3 is a schematic diagram of an embodiment of the smart antenna apparatus of FIG. 2;
fig. 4 is a flowchart of an embodiment of a method for controlling a smart antenna apparatus according to the present application; and
fig. 5 is a flowchart illustrating another embodiment of a method for controlling a smart antenna apparatus according to the present application.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar components or method flows.
It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, are taken to specify the presence of stated features, integers, steps, operations, and/or components, but do not preclude the presence or addition of further features, integers, steps, operations, components, and/or groups thereof.
It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is described as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.
Moreover, although terms such as "first," "second," "8230," etc. may be used herein to describe various elements, such terms are used only to distinguish one element or operation from another element or operation described in similar technical terms.
Please refer to fig. 1, which is a schematic diagram of an embodiment of a smart antenna device connected to an electronic controller unit of a vehicle according to the present application. As shown in fig. 1, the smart antenna device 1 is mounted on a vehicle and connected to an electronic controller unit 2. Specifically, the smart antenna apparatus 1 may be disposed in plastic boots of front and rear bumpers of the vehicle, and the electronic controller unit 2 is used to control the driving state of the vehicle and the smart antenna apparatus 1 and to implement various functions thereof.
In the present embodiment, the smart antenna apparatus 1 includes: the antenna 11, the rf connector 12 and the motherboard 13, the motherboard 13 is electrically connected to the antenna 11 and the rf connector 12, and the motherboard 13 is provided with an rf switch circuit 131 and a plurality of matching circuits 132. The antenna 11 may be, but is not limited to, an omnidirectional radiation antenna to ensure normal communication in a place with a harsh communication environment; the antenna 11 can adopt a PCB structure, a metal structure and the like as a carrier (for example, a printed antenna adopting an FR-4 dielectric plate) so as to adapt to the working environment with vehicle-mounted specification, high temperature, high humidity and vibration resistance; the rf switch circuit 131 may be, but is not limited to, an rf switch chip.
In the present embodiment, the rf switch circuit 131 is configured to connect the electronic controller unit 2 through the rf connector 12, and connect at least one of the matching circuits 132 to the antenna 11 based on a control signal from the electronic controller unit 2, so as to control the antenna 11 to receive and transmit rf signals corresponding to a target frequency band, wherein a combination of all target frequency bands in which the antenna 11 operates covers all frequencies from 3.1GHz to 10.6 GHz.
For example, the plurality of matching circuits 132 includes a matching circuit 132a, a matching circuit 132b, a matching circuit 132c, and a matching circuit 132d, the matching circuit 132a includes a resistor R having one end grounded and the other end connected to the rf switch circuit 131, the matching circuit 132b includes a first inductor L1 having one end grounded and the other end connected to the rf switch circuit 131, the matching circuit 132c includes a second inductor L2 having one end grounded and the other end connected to the rf switch circuit 131, and the matching circuit 132d includes a third inductor L3 having one end grounded and the other end connected to the rf switch circuit 131; the radio frequency switch circuit 131 has a control terminal 1311 and a control terminal 1312, and the radio frequency switch circuit 131 receives a control signal from the electronic controller unit 2 through the control terminal 1311 and the control terminal 1312 to connect at least one of the matching circuit 132a, the matching circuit 132b, the matching circuit 132c, and the matching circuit 132d to the antenna 11 based on the received control signal.
When the matching circuit 132a is connected with the antenna 11, the target frequency band of the antenna 11 covers 8GHz to 10.6GHz; when the matching circuit 132b is connected with the antenna 11, the target frequency band of the antenna 11 covers 6.5GHz to 8.2GHz; when the matching circuit 132c is connected to the antenna 11, the target frequency band of the antenna 11 covers 4.5GHz to 7.2GHz; when the matching circuit 132d is connected to the antenna 11, the target frequency band of the antenna 11 covers 3.1GHz to 5GHz; therefore, the combination of all the target frequency bands in which the antenna 11 operates covers all the frequencies from 3.1GHz to 10.6GHz, so that the user can use the electronic controller unit 2 to send a control signal corresponding to the required target frequency band to the radio frequency switch circuit 131 based on actual requirements, thereby controlling the antenna 11 to operate in the required target frequency band (i.e. the smart antenna apparatus 1 can be fixed to operate in the required target frequency band, i.e. the electronic controller unit 2 sets the smart antenna apparatus 1 to enter a fixed frequency band mode).
It should be noted that the rf switch circuit 131 can connect two or more matching circuits 132 to the antenna 11 based on the control signal from the electronic controller unit 2, and add the electronic components required by the target frequency band, so as to effectively reduce the loss on the circuit caused by the signal transmission through the rf switch circuit 131.
In this embodiment, when the smart antenna apparatus 1 enters the channel searching mode, the antenna 11 receives and transmits the radio frequency signals of each target frequency band to the electronic controller unit 2 based on different control signals, so that the electronic controller unit 2 transmits the control signal corresponding to the first frequency band to the radio frequency switch circuit 131, thereby controlling the antenna 11 to operate in the first frequency band, where the first frequency band is a frequency band with a minimum packet loss rate in all target frequency bands, and the packet loss rate of the first frequency band is smaller than the first threshold. Specifically, the electronic controller unit 2 may set the smart antenna apparatus 1 to be in a channel searching mode, and send different control signals to the radio frequency switch circuit 131, the radio frequency switch circuit 131 connects different matching circuits 132 to the antenna 11 based on the different control signals, so that the antenna 11 sends and receives radio frequency signals of each target frequency band to the electronic controller unit 2, so that the electronic controller unit 2 obtains packet loss rates (packet loss rates refer to a ratio of data reception to data transmission) of each target frequency band based on the sending and receiving results of the radio frequency signals of each target frequency band, selects a target frequency band with a packet loss rate smaller than a first threshold and a minimum packet loss rate as a first frequency band, and sends a control signal corresponding to the first frequency band to the radio frequency switch circuit 131, so as to connect the corresponding matching circuit 132 to the antenna 11 through the radio frequency switch circuit 131, and control the antenna 11 to operate in the first frequency band. Therefore, the smart antenna apparatus 1 can adaptively switch the operating frequency band based on the packet loss rate of each current target frequency band. The first threshold may be, but not limited to, 2%, and may be adjusted according to actual requirements.
In an embodiment, according to the principle that the signal is searched from far to near when the digital key of the smart antenna device 1 is actually applied in a vehicle, the rf switch circuit 131 may connect different matching circuits 132 to the antenna 11 based on different control signals, so that the antenna 11 sequentially receives and transmits the rf signals from the low target frequency band to the high target frequency band. Specifically, the electronic controller unit 2 can control the sequence of sending different control signals, so that the antenna 11 can sequentially receive and send radio frequency signals from a low target frequency band to a high target frequency band.
In an embodiment, when the plurality of target frequency bands have the minimum packet loss rate at the same time and the minimum packet loss rate is smaller than the first threshold, the first frequency band is the lowest target frequency band of the plurality of target frequency bands to follow the optimal logic of the low frequency band operation.
In an embodiment, when the packet loss rate of each target frequency band is greater than or equal to the first threshold and less than the second threshold, the antenna 11 receives and transmits the radio frequency signal of each target frequency band to the electronic controller unit 2 again based on different control signals. That is, when the packet loss rate of each target frequency band is greater than or equal to the first threshold and less than the second threshold, electromagnetic field interference exists around the current use environment, and the communication quality of each target frequency band is poor, so the smart antenna device 1 reenters the channel searching mode to find the target frequency band with the packet loss rate less than the first threshold and the minimum packet loss rate for communication. The second threshold may be, but not limited to, 10%, and may be adjusted according to actual requirements.
In an embodiment, when the packet loss rate of each target frequency band is greater than or equal to the second threshold, the rf switch circuit 131 receives the sleep signal, so as to disconnect all the matching circuits 132 from the antenna 11. In other words, when the communication quality of each target frequency band is seriously affected by the electromagnetic field interference of the current use environment, the smart antenna apparatus 1 directly enters the sleep mode, and the smart antenna apparatus 1 starts to operate only when the electronic controller unit 2 sets the smart antenna apparatus 1 to enter the fixed frequency band mode or the channel searching mode.
Referring to fig. 2 and 3, fig. 2 is an exploded view of an embodiment of a smart antenna apparatus according to the present application, and fig. 3 is a combined view of the smart antenna apparatus of fig. 2. As shown in fig. 2 and 3, the smart antenna apparatus 1 may further include: a housing 14, the housing 14 having an accommodating space 141 and an opening 142, the opening 142 communicating with the accommodating space 141; the antenna 11 and the main board 13 are disposed in the accommodating space 141, and the rf connector 12 is plugged into the main board 13 and exposed to the housing 14 through the opening 142. The shell 14 is used for protecting the antenna 11 and the mainboard 13, is dustproof, shockproof and waterproof, and meets the requirements of automobile-grade parts; the housing 14 may be designed to match the appearance of the device in different mounting locations.
In an embodiment, the housing 14 may include a mounting base 143 and a cover 144, the mounting base 143 has a first notch 1431, the cover 144 has a second notch 1441, and the first notch 1431 and the second notch 1441 surround to form the opening 142. The material of the mounting base 143 and the cover 144 may be, but is not limited to, polycarbonate (PC); the mounting base 143 is a base for mounting the smart antenna device 1; the design of the opening 142 surrounded by the first notch 1431 and the second notch 1441 can be used for positioning the rf connector 12, and is favorable for assembling the smart antenna apparatus 1.
Please refer to fig. 4, which is a flowchart illustrating a control method of a smart antenna apparatus according to an embodiment of the present application. The intelligent antenna device comprises an antenna, a radio frequency connector and a mainboard, wherein the mainboard is electrically connected with the antenna and the radio frequency connector, and a radio frequency switch circuit and a plurality of matching circuits are arranged on the mainboard. As shown in fig. 4, the control method 3 of the smart antenna device is applied to an electronic controller unit of a vehicle and comprises the following steps: setting the smart antenna device to enter a fixed frequency band mode, and sending a first control signal to the smart antenna device (step 31); the radio frequency switch circuit receives the first control signal through the radio frequency connector, and connects the corresponding matching circuit with the antenna based on the first control signal, so that the antenna receives and transmits the radio frequency signal corresponding to the target frequency band (step 32); setting the smart antenna apparatus to enter a channel searching mode, and sending a second control signal to the smart antenna apparatus (step 33); the radio frequency switch circuit receives different second control signals through the radio frequency connector, and connects different matching circuits to the antenna based on the different second control signals, so that the antenna receives and transmits radio frequency signals of each target frequency band, wherein the combination of all the target frequency bands of the antenna working covers all frequencies from 3.1GHz to 10.6GHz (step 34); acquiring packet loss rates of the target frequency bands based on the receiving and sending results of the radio frequency signals of the target frequency bands (step 35); and selecting the target frequency band with the packet loss rate less than the first threshold and the minimum packet loss rate as a first frequency band, and sending a second control signal corresponding to the first frequency band to the radio frequency switch circuit so as to control the antenna to work in the first frequency band through the radio frequency switch circuit (step 36).
Therefore, through steps 31 and 32, the smart antenna device can be operated in a desired target frequency band; through steps 33 and 36, the smart antenna apparatus may adaptively switch the operating frequency band based on the packet loss rate of each current target frequency band. For a detailed description, reference may be made to the related description of the above embodiments, which is not repeated herein.
In one embodiment, step 34 may comprise: the radio frequency switch circuit connects different matching circuits to the antenna based on different second control signals, so that the antenna receives and transmits radio frequency signals from a low target frequency band to a high target frequency band in sequence. Therefore, the principle of searching signals from far to near when the digital key of the intelligent antenna device 1 is applied to vehicle-mounted practical application can be met.
In an embodiment, the selecting, in step 36, the target frequency band with the packet loss rate less than the first threshold and the minimum packet loss rate as the first frequency band may include: and when the plurality of target frequency bands have the minimum packet loss rate at the same time and the minimum packet loss rate is smaller than the first threshold value, selecting the lowest target frequency band in the plurality of target frequency bands as a first frequency band. Thus, the optimal logic for low band operation can be followed.
In an embodiment, please refer to fig. 5, which is a flowchart illustrating another embodiment of a method for controlling a smart antenna apparatus according to the present application. As shown in fig. 5, the control method 3 of the smart antenna apparatus may further include, in addition to the steps 31 to 36: and when the packet loss rates of the target frequency bands are all greater than or equal to the first threshold and less than the second threshold, returning to execute the step 33 (step 37). Therefore, when the communication quality of each target frequency band is not good due to the current use environment, the smart antenna device re-enters the channel searching mode to find the target frequency band with the packet loss rate smaller than the first threshold and the minimum packet loss rate for communication. Note that, in order to avoid the drawing of fig. 5 being too complicated, the drawing steps 31 to 32 are omitted. For a detailed description, reference may be made to the related description of the above embodiments, which is not repeated herein.
In an embodiment, the control method 3 of the smart antenna apparatus may further include: and when the packet loss rate of each target frequency band is greater than or equal to the second threshold, sending a sleep signal to the radio frequency switch circuit to disconnect all the matching circuits from the antenna (step 38). Wherein the first threshold is less than the second threshold. Therefore, when the communication quality of each target frequency band is seriously affected due to the electromagnetic field interference of the current use environment, the intelligent antenna device directly enters the sleep mode, and the intelligent antenna device starts to operate only when the electronic controller unit sets the intelligent antenna device to enter the fixed frequency band mode or the channel searching mode.
In summary, in the smart antenna apparatus and the control method thereof of the present application, the corresponding matching circuit is connected to the antenna through the control signal by the radio frequency switch circuit, and the design of the matching circuits is matched at the same time, so that the combination of all target frequency bands of the antenna operation covers all frequencies from 3.1GHz to 10.6GHz, and the smart antenna apparatus can be fixed to work in a required target frequency band or can adaptively switch the working frequency band based on the packet loss rate of each current target frequency band. Therefore, the intelligent antenna device can be applied to vehicles in different regions and countries and vehicles produced by each vehicle enterprise, and can solve the problems in the prior art. In addition, when the current usage environment causes poor communication quality of each target frequency band, the smart antenna device re-enters the channel searching mode to find the target frequency band with the packet loss rate smaller than the first threshold and the minimum packet loss rate for communication. In addition, when the communication quality of each target frequency band is seriously affected due to electromagnetic field interference of the current use environment, the intelligent antenna device directly enters a sleep mode, and the intelligent antenna device starts to operate only when the electronic controller unit sets the intelligent antenna device to enter a fixed frequency band mode or a channel searching mode.
While the invention is illustrated using the above embodiments, it should be noted that the description is not intended to limit the invention. Rather, this invention encompasses modifications and similar arrangements apparent to those skilled in the art. The scope of the claims is, therefore, to be construed in the broadest possible manner to cover all such modifications and similar arrangements.
Claims (12)
1. A smart antenna device, characterized in that, set up on the vehicle and connect electronic control unit, smart antenna device includes:
an antenna;
a radio frequency connector; and
the main board is electrically connected with the antenna and the radio frequency connector, and a radio frequency switch circuit and a plurality of matching circuits are arranged on the main board; the radio frequency switch circuit is used for connecting the electronic controller unit through the radio frequency connector, and connecting at least one of the matching circuits with the antenna based on a control signal from the electronic controller unit so as to control the antenna to receive and transmit radio frequency signals of a corresponding target frequency band, wherein the combination of all the target frequency bands of the antenna working covers all frequencies from 3.1GHz to 10.6GHz;
when the smart antenna device enters a channel searching mode, the antenna receives and transmits radio frequency signals of each target frequency band to the electronic controller unit based on different control signals, so that the electronic controller unit transmits the control signals corresponding to a first frequency band to the radio frequency switch circuit, and the antenna is controlled to work in the first frequency band, wherein the first frequency band is a frequency band with the minimum packet loss rate in all the target frequency bands, and the packet loss rate of the first frequency band is smaller than a first threshold value.
2. A smart antenna assembly as recited in claim 1, further comprising: the shell is provided with an accommodating space and an opening, and the opening is communicated with the accommodating space; the antenna and the main board are arranged in the accommodating space, and the radio frequency connector is inserted into the main board and exposed out of the shell through the opening.
3. A smart antenna assembly as recited in claim 2 wherein said housing includes a mounting base and a cover, said mounting base having a first notch, said cover having a second notch, said first notch and said second notch surrounding said opening.
4. The smart antenna apparatus as claimed in claim 1, wherein the first band is a lowest target band of the plurality of target bands when the plurality of target bands simultaneously have a minimum packet loss rate and the minimum packet loss rate is smaller than the first threshold.
5. The smart antenna device as claimed in claim 1, wherein when the packet loss rate of each target band is greater than or equal to the first threshold and less than a second threshold, the antenna transmits and receives the rf signal of each target band to the electronic controller unit based on different control signals again.
6. The smart antenna apparatus as claimed in claim 1, wherein when the packet loss rate of each target frequency band is greater than or equal to a second threshold, the rf switch circuit receives a sleep signal, so as to disconnect all the matching circuits from the antenna, wherein the first threshold is smaller than the second threshold.
7. A smart antenna device as claimed in claim 1 wherein the antenna is an omni-directional radiating antenna.
8. A control method of a smart antenna device, applied to an electronic controller unit of a vehicle, comprising the steps of:
(a) The method comprises the steps that an intelligent antenna device is set to enter a fixed frequency band mode, and a first control signal is sent to the intelligent antenna device, wherein the intelligent antenna device comprises an antenna, a radio frequency connector and a main board, the main board is electrically connected with the antenna and the radio frequency connector, and a radio frequency switch circuit and a plurality of matching circuits are arranged on the main board;
(b) The radio frequency switch circuit receives the first control signal through the radio frequency connector, and connects the corresponding matching circuit with the antenna based on the first control signal, so that the antenna receives and transmits radio frequency signals corresponding to a target frequency band;
(c) Setting the intelligent antenna device to enter a channel searching mode, and sending different second control signals to the intelligent antenna device;
(d) The radio frequency switch circuit receives the different second control signals through the radio frequency connector, and connects different matching circuits to the antenna based on the different second control signals, so that the antenna receives and transmits radio frequency signals of each target frequency band, wherein the combination of all the target frequency bands of the antenna working covers all frequencies from 3.1GHz to 10.6GHz;
(e) Acquiring the packet loss rate of each target frequency band based on the receiving and sending results of the radio frequency signals of each target frequency band; and
(f) Selecting a target frequency band with a packet loss rate smaller than a first threshold and a minimum packet loss rate as a first frequency band, and sending a second control signal corresponding to the first frequency band to the radio frequency switch circuit so as to control the antenna to work in the first frequency band through the radio frequency switch circuit.
9. The method of claim 8, wherein the step of selecting the target frequency band with the packet loss rate less than the first threshold and the minimum packet loss rate as the first frequency band comprises:
and when the target frequency bands have the minimum packet loss rate at the same time and the minimum packet loss rate is smaller than the first threshold, selecting the lowest target frequency band of the target frequency bands as the first frequency band.
10. The method of controlling a smart antenna device as recited in claim 8, further comprising:
and (c) when the packet loss rates of the target frequency bands are all larger than or equal to the first threshold and smaller than a second threshold, returning to execute the step (c).
11. The method of controlling a smart antenna device as recited in claim 8, further comprising:
and when the packet loss rate of each target frequency band is greater than or equal to a second threshold, sending a sleep signal to the radio frequency switch circuit to disconnect all the matching circuits from the antenna, wherein the first threshold is less than the second threshold.
12. The smart antenna apparatus controlling method of claim 8, wherein the step (d) comprises:
the radio frequency switch circuit connects different matching circuits to the antenna based on the different second control signals, so that the antenna sequentially receives and transmits radio frequency signals from a low target frequency band to a high target frequency band.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211019134.9A CN115412121A (en) | 2022-08-24 | 2022-08-24 | Intelligent antenna device and control method thereof |
| TW111140935A TW202308228A (en) | 2022-08-24 | 2022-10-27 | Smart antenna device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211019134.9A CN115412121A (en) | 2022-08-24 | 2022-08-24 | Intelligent antenna device and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115412121A true CN115412121A (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211019134.9A Pending CN115412121A (en) | 2022-08-24 | 2022-08-24 | Intelligent antenna device and control method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115412121A (en) |
| TW (1) | TW202308228A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115412121A (en) * | 2022-08-24 | 2022-11-29 | 立讯精密工业（昆山）有限公司 | Intelligent antenna device and control method thereof |
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| CN113133074A (en) * | 2021-04-22 | 2021-07-16 | 荣耀终端有限公司 | WiFi network switching method and device |
| CN114079523A (en) * | 2020-08-17 | 2022-02-22 | 艾锐势企业有限责任公司 | Method, apparatus and computer medium for handover of user terminal and access point |
| TW202308228A (en) * | 2022-08-24 | 2023-02-16 | 大陸商立訊精密工業（昆山）有限公司 | Smart antenna device and control method thereof |
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- 2022-08-24 CN CN202211019134.9A patent/CN115412121A/en active Pending
- 2022-10-27 TW TW111140935A patent/TW202308228A/en unknown
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| CN202634419U (en) * | 2012-03-28 | 2012-12-26 | 青岛海信移动通信技术股份有限公司 | RF circuit compatible with multiple frequency bands and mobile communication terminal |
| CN103457041A (en) * | 2013-08-19 | 2013-12-18 | 小米科技有限责任公司 | Antenna circuit, controller, modulator-demodulator and circuit controlling method and terminal |
| CN203522754U (en) * | 2013-10-09 | 2014-04-02 | 桂林电子科技大学 | Cognition spectrum sensing device on basis of DVB-T (Digital Video Broadcasting-Terrestrial) frequency band |
| CN104602312A (en) * | 2015-01-30 | 2015-05-06 | 海信集团有限公司 | Wireless channel switching method and AP (Access Point) |
| CN105957320A (en) * | 2016-05-03 | 2016-09-21 | 成都泰盟软件有限公司 | Wireless connection method for multi-channel bio-signal collector and sensor |
| CN107612568A (en) * | 2017-09-12 | 2018-01-19 | 上海斐讯数据通信技术有限公司 | A kind of radio-frequency front-end receiving circuit and its implementation |
| CN114079523A (en) * | 2020-08-17 | 2022-02-22 | 艾锐势企业有限责任公司 | Method, apparatus and computer medium for handover of user terminal and access point |
| CN113133074A (en) * | 2021-04-22 | 2021-07-16 | 荣耀终端有限公司 | WiFi network switching method and device |
| TW202308228A (en) * | 2022-08-24 | 2023-02-16 | 大陸商立訊精密工業（昆山）有限公司 | Smart antenna device and control method thereof |
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| TW202308228A (en) | 2023-02-16 |
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