Intelligent switching antenna, antenna switching method, wearable communication device and storage medium

Abstract

The present invention provides an intelligent switching antenna, an antenna switching method, a wearable communication device and a storage medium, which relate to the field of communication technology. The intelligent switching antenna includes: a water intrusion state recognition module and at least three groups of antenna modules, wherein at least one group of antenna modules is arranged on the shoulder of a life jacket, at least one group of antenna modules extends from the shoulder of the life jacket to the back, and at least one group of antenna modules extends from the shoulder of the life jacket to the front chest; the water intrusion state recognition module is used to generate output signals corresponding to at least three groups of antenna modules; for each antenna module, based on the output signal and the on-off state of the antenna module, the water intrusion state recognition signal corresponding to the antenna module is determined; based on all water intrusion state recognition signals, a target antenna module in a non-water intrusion state is determined from at least three groups of antenna modules; and the target antenna module is switched to communicate. The present invention can always use the target antenna module that has not been intruded by water for communication, thereby ensuring the wireless communication effect.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to an intelligent switching antenna, an antenna switching method, a wearable communication device and a storage medium. Background Art

[0002] At present, most life jackets are equipped with wireless communication devices to detect the swimmer's location information and vital signs in real time to ensure swimming safety. Figure 1 As shown, in the conventional life jacket wearable wireless communication device, an antenna is arranged at the shoulder position to realize rapid positioning.

[0003] However, the state of a person in water changes dynamically, for example, there are different postures such as backstroke, freestyle, and upright floating, which causes the antenna in the wireless communication device to enter the water or approach the water surface at a close distance. When wireless communication equipment communicates with the outside world, it mainly relies on the antenna to radiate or receive electromagnetic waves in space to achieve communication. When the antenna in the wireless communication device is immersed in water, due to the characteristics of water such as high conductivity and high dielectric constant, the electromagnetic wave propagates in the water. The loss is very large, which leads to poor antenna performance, thus affecting the wireless communication effect. Summary of the invention

[0004] The present invention provides an intelligent switching antenna, an antenna switching method, a wearable communication device and a storage medium, which are used to solve the defect in the prior art that the antenna performance is poor after being immersed in water, thereby affecting the wireless communication effect.

[0005] The present invention provides an intelligent switching antenna, comprising: a water intrusion state recognition module and at least three groups of antenna modules connected to the water intrusion state recognition module, wherein at least one group of antenna modules is arranged on the shoulder of a life jacket, at least one group of antenna modules extends from the shoulder of the life jacket to the back, and at least one group of antenna modules extends from the shoulder of the life jacket to the front chest;

[0006] The water intrusion status identification module is used to generate output signals corresponding to each of the at least three groups of antenna modules; for each of the antenna modules, based on the output signal and the on-off state of the antenna module, the water intrusion status identification signal corresponding to the antenna module is determined; the on-off state is used to characterize the contact state between the antenna module and the conductive fluid; based on all water intrusion status identification signals, a target antenna module in a non-water intrusion state is determined from the at least three groups of antenna modules; and communication is switched to the target antenna module.

[0007] According to the intelligent switching antenna provided by the present invention, for each antenna module, the antenna module includes an antenna and a detection signal line that do not contact each other, and the water intrusion status identification module is used to determine the water intrusion status identification signal corresponding to the antenna module based on the output signal and the on-off state between the antenna and the detection signal line.

[0008] According to the intelligent switching antenna provided by the present invention, for each antenna module, the antenna is connected to a first inductor, the detection signal line is connected to a second inductor, the first inductor and the second inductor are both connected to the water intrusion status identification module, and the first inductor is grounded.

[0009] According to the intelligent switching antenna provided by the present invention, the water intrusion state recognition module includes a control unit, a radio frequency wireless transceiver and an antenna switching switch which are connected in series in sequence, wherein:

[0010] The control unit is connected to all the second inductors, and is used to generate an output signal corresponding to each of the second inductors, and determine a water intrusion state identification signal corresponding to each of the antenna modules based on the output signal and the on / off state of each of the antenna modules; and determine a target antenna module from the at least three groups of antenna modules based on all the water intrusion state identification signals;

[0011] The radio frequency wireless transceiver is used to transmit signals between the control unit and the target antenna module;

[0012] The antenna switching switch connects all antennas and all first inductors, and the antenna switching switch is used to establish a connection between the radio frequency wireless transceiver and a target antenna in the target antenna module.

[0013] According to the intelligent switching antenna provided by the present invention, the water intrusion state recognition module determines the water intrusion state recognition signal corresponding to the antenna module based on the output signal and the on-off state of the antenna module, including:

[0014] When the antenna module is in a conducting state, adjusting the level state of the output signal to obtain a water intrusion state identification signal corresponding to the antenna module;

[0015] When the antenna module is in an open circuit state, the output signal is determined as a water intrusion state identification signal corresponding to the antenna module.

[0016] According to the intelligent switching antenna provided by the present invention, the water intrusion state recognition module determines the target antenna module from the at least three groups of antenna modules based on all water intrusion state recognition signals, including:

[0017] Determine a comparison result between each of the water intrusion state identification signals and a corresponding output signal;

[0018] Based on all comparison results, a target antenna module is determined from the at least three groups of antenna modules.

[0019] According to the intelligent switching antenna provided by the present invention, the water intrusion state recognition module determines the target antenna module from the at least three groups of antenna modules based on all comparison results, including:

[0020] In the case that only one identical result is included in all the comparison results, the antenna module corresponding to the identical result is determined as the target antenna module; the identical result is used to indicate that the level state of the water intrusion state identification signal is the same as the level state of the corresponding output signal;

[0021] In the case that all the comparison results include at least two identical results, the target antenna module is determined based on the historical antenna module at the previous moment and the at least two identical results.

[0022] The present invention also provides an antenna switching method, which is applied to the intelligent switching antenna as described in any one of the above items, and the method comprises:

[0023] Generate output signals corresponding to at least three groups of antenna modules respectively;

[0024] For each of the antenna modules, based on the output signal and the on / off state of the antenna module, a water intrusion state identification signal corresponding to the antenna module is determined; the on / off state is used to characterize the contact state between the antenna module and the conductive fluid;

[0025] Based on all water intrusion state identification signals, determining a target antenna module in a non-water intrusion state from the at least three groups of antenna modules;

[0026] Switch to the target antenna module for communication.

[0027] The present invention also provides a wearable communication device, comprising a life jacket and any one of the above-mentioned intelligent switching antennas, wherein the intelligent switching antenna is arranged on the life jacket.

[0028] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the antenna switching method described in any one of the above methods is implemented.

[0029] The present invention provides an intelligent switching antenna, an antenna switching method, a wearable communication device and a storage medium. In the intelligent switching antenna, at least one group of antenna modules are respectively arranged on the shoulder of the life jacket, in the direction extending from the shoulder to the back, and in the direction extending from the shoulder to the front chest. After the water intrusion state recognition module generates output signals corresponding to each group of antenna modules, the water intrusion state recognition signal corresponding to each group of antenna modules is determined according to each output signal and the on-off state corresponding to the corresponding antenna module to identify the water intrusion state of each antenna module. According to all the water intrusion state recognition signals, a target antenna module that is above the water surface and not intruded by water under the buoyancy of the life jacket is determined from at least three groups of antenna modules, and the target antenna module is switched to for communication. When the user is in different postures, it is ensured that the target antenna module with higher antenna performance that has not been intruded by water is always used for communication to ensure the wireless communication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of a wireless communication device in a life jacket provided by the prior art.

[0032] Figure 2 This is one of the structural schematic diagrams of the intelligent switching antenna provided in the embodiment of the present invention.

[0033] Figure 3 This is the second structural schematic diagram of the intelligent switching antenna provided in the embodiment of the present invention.

[0034] Figure 4 This is the third structural schematic diagram of the intelligent switching antenna provided in an embodiment of the present invention.

[0035] Figure 5 It is a schematic diagram of the effect of antenna radiation efficiency corresponding to the first antenna module in two states provided by an embodiment of the present invention.

[0036] Figure 6 It is a schematic diagram of the effect of the antenna radiation efficiency corresponding to the second antenna module in two states provided by an embodiment of the present invention.

[0037] Figure 7 It is a schematic diagram of the effect of antenna radiation efficiency corresponding to the third antenna module in two states provided by an embodiment of the present invention.

[0038] Figure 8 It is a flowchart of an antenna switching method provided by an embodiment of the present invention.

[0039] Reference numerals:

[0040] 110: antenna module; 111: antenna; 112: detection signal line; 113: first inductor; 114: second inductor; 120: water intrusion status identification module; 121: control unit; 122: radio frequency wireless transceiver; 123: antenna switching switch. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In view of the problem in the prior art that the antenna performance is poor after being immersed in water, thereby affecting the wireless communication effect, an embodiment of the present invention provides an intelligent switching antenna. Figure 2 is one of the structural diagrams of the intelligent switching antenna provided by an embodiment of the present invention, such as Figure 2 As shown, the intelligent switching antenna includes: a water intrusion state recognition module 120 and at least three groups of antenna modules 110 connected to the water intrusion state recognition module 120, wherein at least one group of antenna modules 110 is arranged on the shoulder of the life jacket, at least one group of antenna modules 110 extends from the shoulder of the life jacket to the back, and at least one group of antenna modules 110 extends from the shoulder of the life jacket to the front chest;

[0043] The water intrusion state identification module 120 is used to generate output signals corresponding to each of the at least three groups of antenna modules 110; for each of the antenna modules 110, based on the output signal and the on-off state of the antenna module 110, the water intrusion state identification signal corresponding to the antenna module 110 is determined; the on-off state is used to characterize the contact state between the antenna module 110 and the conductive fluid; based on all water intrusion state identification signals, a target antenna module 110 in a non-water intrusion state is determined from the at least three groups of antenna modules 110; and communication is switched to the target antenna module 110.

[0044] Specifically, at least three groups of antenna modules 110 are arranged in the intelligent switching antenna, which are arranged at the shoulder of the life jacket, in the direction extending from the shoulder of the life jacket to the back, and in the direction extending from the shoulder of the life jacket to the front chest, respectively, so as to meet the user's different postures in the water. Under the buoyancy of the life jacket, at least one group of antenna modules 110 among the at least three groups of antenna modules 110 floats above the water surface. For example, the intelligent switching antenna includes three groups of antenna modules 110, the first antenna module 110 is arranged at the shoulder of the life jacket, the second antenna module 110 extends from the shoulder of the life jacket to the back, and the third antenna module 110 extends from the shoulder of the life jacket to the front chest. When the user swims facing the water surface, the third antenna module 110 enters the water, the first antenna module 110 floats on the water surface or enters the water, and the second antenna module 110 floats above the water surface and does not enter the water. When the user is backstroke, the second antenna module 110 is immersed in the water, the first antenna module 110 floats on the water surface or is immersed in the water, and the third antenna module 110 floats on the water surface and does not penetrate into the water. When the user is floating upright in the water, the second antenna module 110 floats on the water surface or is immersed in the water, the third antenna module 110 floats on the water surface or is immersed in the water, and the first antenna module 110 floats on the water surface and does not penetrate into the water.

[0045] Afterwards, after generating the output signal corresponding to each group of antenna modules 110, the water intrusion state recognition module 120 reflects the contact state of each group of antenna modules 110 with the conductive fluid through the on-off state of each group of antenna modules 110, based on the principle that the antenna modules 110 conduct electricity after contacting with the conductive fluid, that is, the on-off state reflects whether each group of antenna modules 110 is in contact with the conductive fluid. Afterwards, the water intrusion state of each group of antenna modules 110 is identified according to the output signal and the on-off state of the antenna module 110, and the water intrusion state recognition signal corresponding to each antenna module 110 is generated. According to all the water intrusion state recognition signals, the target antenna module 110 that is not intruded with water is determined from at least three groups of antenna modules 110. Since the target antenna module 110 is not intruded with water, the electromagnetic wave propagation loss in the air is small, so that the antenna performance of the target antenna module 110 is better than that of other antenna modules 110, thereby ensuring the wireless communication effect when the target antenna module 110 is switched for communication in the future.

[0046] It should be noted that the on-off state of the antenna module 110 reflects whether the antenna module 110 is in contact with the conductive fluid. If the antenna module 110 is in contact with the conductive fluid, the antenna module 110 is short-circuited through the conductive fluid. If the antenna module 110 is not in contact with the conductive fluid, the antenna module 110 is in an open circuit state, that is, an insulating state.

[0047] It should be noted that the water intrusion state is used to characterize whether the antenna module 110 is intruded with a conductive fluid, and the conductive fluid may be water containing other media and being conductive, and the medium may include: quartz sand, diatomaceous earth, chlorine disinfectant, Ph regulator, and sodium chloride, etc., which is not limited in the embodiment of the present invention. For ease of description, the following description is based on intrusion into water or no intrusion into water.

[0048] Further, Figure 3 FIG. 2 is a second structural diagram of an intelligent switching antenna provided by an embodiment of the present invention. Figure 3 As shown, for each of the antenna modules 110, the antenna module 110 includes an antenna 111 and a detection signal line 112 that are not in contact with each other, and the water intrusion status identification module 120 is used to determine the water intrusion status identification signal corresponding to the antenna module 110 based on the output signal and the on-off state between the antenna 111 and the detection signal line 112.

[0049] Specifically, each group of antenna modules 110 adopts a double-wire design, that is, each group of antenna modules 110 includes an antenna 111 and a detection signal line 112 accompanying the antenna 111. The antenna 111 and the detection signal line 112 in the same group of antenna modules 110 do not contact each other. When the antenna module 110 is not immersed in water, there is air between the antenna 111 and the detection signal line 112. Since air under normal conditions such as normal temperature, normal pressure, interference and no pollution is not conductive, at this time, the antenna 111 and the detection signal line 112 are in an insulated state. When the antenna module 110 is immersed in water, a conductive fluid is filled between the antenna 111 and the detection signal line 112. Based on the characteristics of the conductive fluid such as high conductivity and high dielectric constant, at this time, the antenna 111 and the detection signal line 112 are short-circuited and connected through the conductive fluid.

[0050] Furthermore, if Figure 3 As shown, for each antenna module 110, the antenna 111 is connected to the first inductor 113, the detection signal line 112 is connected to the second inductor 114, the first inductor 113 and the second inductor 114 are both connected to the water intrusion status identification module 120, and the first inductor 113 is grounded.

[0051] Specifically, the antennas 111 in each group of antenna modules 110 are respectively connected to the corresponding first inductors 113, and the detection signal line 112 is connected to the corresponding second inductors 114. The inductance values ​​of the first inductors 113 and the second inductors 114 are both relatively large. The second inductors 114 are used to filter out the radio frequency signal and eliminate the coupling effect of the detection signal line 112 on the antenna 111. In addition, the first inductors 113 and the second inductors 114 are both connected to the water intrusion status recognition module 120. The second inductor 114 is used to receive the output signal generated by the water intrusion status recognition module 120 and transmit it to the detection signal line 112. The first inductor 113 is grounded. The first inductor 113 is in an open circuit state relative to the radio frequency signal and in a short circuit state relative to the low-frequency signal.

[0052] In addition, the wire body of each antenna module 110 is manufactured using the FPC (Flexible Printed Circuit) soft board process, the outer side of the metal layer is uncoated, and one side of the wire body is exposed to the outside, ensuring that when a conductive fluid invades, the antenna 111 and the detection signal line 112 can be short-circuited through the conductive fluid.

[0053] It should be noted that all output signals output by the water intrusion status recognition module 120 are high-level signals.

[0054] Further, the water intrusion state recognition module 120 determines the water intrusion state recognition signal corresponding to the antenna module 110 based on the output signal and the on / off state of the antenna module 110, including:

[0055] When the antenna module 110 is in a conducting state, adjusting the level state of the output signal to obtain a water intrusion state identification signal corresponding to the antenna module 110;

[0056] When the antenna module 110 is in an open circuit state, the output signal is determined as a water intrusion state identification signal corresponding to the antenna module 110 .

[0057] Specifically, when the antenna module 110 is in the on state, it indicates that there is a conductive fluid between the antenna 111 and the detection signal line 112 in the antenna module 110 and the short circuit is on. At this time, since the first inductor 113 is grounded, the grounding end will pull down the output signal of the detection signal line 112 end which is a high-level signal, so that the output signal is adjusted from a high-level signal to a low-level signal, thereby obtaining a water intrusion state recognition signal which is a low-level signal, and feeding it back to the water intrusion state recognition module 120. When the antenna module 110 is in the open circuit state, it indicates that the antenna module 110 is not in contact with the conductive fluid, that is, the antenna module 110 floats above the conductive fluid. At this time, since the antenna 111 and the detection signal line 112 are not in contact with each other and are not conductive, the output signal does not change, and then the output signal is determined as a water intrusion state recognition signal, and fed back to the water intrusion state recognition module 120.

[0058] Further, Figure 4 FIG. 3 is a schematic diagram of the structure of the intelligent switching antenna provided by an embodiment of the present invention. Figure 4 As shown, the water intrusion state recognition module 120 includes a control unit 121, a radio frequency wireless transceiver 122 and an antenna switch 123 which are connected in series in sequence, wherein:

[0059] The control unit 121 is connected to all the second inductors 114, and is used to generate an output signal corresponding to each of the second inductors 114, and determine a water intrusion state identification signal corresponding to each of the antenna modules 110 based on the output signal and the on / off state of each of the antenna modules 110; and determine a target antenna module 110 from the at least three groups of antenna modules 110 based on all the water intrusion state identification signals;

[0060] The radio frequency wireless transceiver 122 is used to transmit signals between the control unit 121 and the target antenna module 110;

[0061] The antenna switching switch 123 connects all antennas and all first inductors 113 , and is used to establish a connection between the RF wireless transceiver 122 and a target antenna in the target antenna module 110 .

[0062] Specifically, the control unit 121 in the water intrusion state identification module 120 includes at least three GPIO (General-purpose input / output) interfaces, and each GPIO interface is connected to a second inductor 114. The control unit 121 generates output signals corresponding to each antenna module 110, and transmits them to the corresponding detection signal line 112 through each second inductor 114. Afterwards, the water intrusion state of each antenna module 110 is identified according to each output signal and the on-off state of the corresponding antenna module 110, and a water intrusion state identification signal corresponding to each antenna module 110 is generated. According to all water intrusion state identification signals, the target antenna module 110 that is not intruded by water is determined from all antenna modules 110. Afterwards, the control unit 121 may control the antenna switch 123 to switch to the target antenna 111 in the target antenna module 110, establish a connection between the RF wireless transceiver 122 and the target antenna 111, and then perform signal processing through the RF wireless transceiver 122 to achieve signal transmission between the control unit 121 and the target antenna 111 in the target antenna module 110. For example, the transmitting end of the RF wireless transceiver 122 may perform operations such as modulation, up-conversion, and power amplification on the digital signal to be transmitted, and convert the digital signal into an electromagnetic wave signal suitable for transmission by the target antenna 111. The receiving end of the RF wireless transceiver 122 may perform steps such as signal amplification, filtering, down-conversion, and demodulation on the electromagnetic wave signal received by the target antenna 111, and convert the electromagnetic wave signal into a digital signal required by the control unit 121.

[0063] It should be noted that the control unit 121 includes a processor and a modem. The processor is used to generate output signals corresponding to each antenna module 110 respectively, and transmit them to the corresponding detection signal line 112 through each second inductor 114. Afterwards, according to each output signal and the on-off state of the corresponding antenna module 110, a water intrusion state identification signal corresponding to each antenna module 110 is generated to identify the water intrusion state of each antenna module 110. According to all water intrusion state identification signals, the target antenna module 110 that is not intruded by water is determined from all antenna modules 110. The modem is used to perform signal conversion, modulation and demodulation between the analog signal received by the antenna 111 and the digital signal required by the control unit 121. For example, in the uplink process, that is, before the signal is transmitted, the digital signal is converted into an analog signal suitable for transmission by the antenna 111; in the downlink process, that is, after the signal is received, the large analog signal received by the antenna 111 is converted into a digital signal required by the control unit 121.

[0064] Furthermore, the water intrusion state recognition module 120 determines the target antenna module 110 from the at least three groups of antenna modules 110 based on all water intrusion state recognition signals, including:

[0065] Determine a comparison result between each of the water intrusion state identification signals and a corresponding output signal;

[0066] Based on all comparison results, a target antenna module 110 is determined from the at least three groups of antenna modules 110 .

[0067] Specifically, after determining the water intrusion state identification signal corresponding to each group of antenna modules 110, for each water intrusion state identification signal, the water intrusion state identification signal is compared with the initial output signal in the corresponding antenna module 110 to determine a comparison result, which is used to indicate whether the level state of the water intrusion state identification signal and the level state of the corresponding output signal are the same. After determining all comparison results, the target antenna module 110 that is not intruded with water is determined from all antenna modules 110 according to all comparison results.

[0068] It should be noted that the control unit 121 can call an execution unit in series to compare whether the level states of the water intrusion status identification signals and output signals corresponding to each group of antenna modules 110 are the same, and can also use multiple execution units in parallel to compare whether the level states of the water intrusion status identification signals and output signals corresponding to each group of antenna modules 110 are the same.

[0069] Furthermore, the water intrusion state recognition module 120 determines the target antenna module 110 from the at least three groups of antenna modules 110 based on all comparison results, including:

[0070] In the case that only one identical result is included in all the comparison results, the antenna module 110 corresponding to the identical result is determined as the target antenna module 110; the identical result is used to indicate that the level state of the water intrusion state identification signal is the same as the level state of the corresponding output signal;

[0071] In the case that all the comparison results include at least two identical results, the target antenna module 110 is determined based on the historical antenna module 110 at the previous moment and the at least two identical results.

[0072] Specifically, if among all comparison results, the level state of the water intrusion state identification signal of only one antenna module 110 is the same as the level state of the corresponding output signal, that is, the water intrusion state identification signal and the output signal of the antenna module 110 are both high-level signals, indicating that the antenna module 110 is not intruded by water, and the other antenna modules 110 are intruded by water. At this time, the antenna module 110 can be determined as a target antenna module 110 that is not intruded by water. If among all comparison results, the level state of the water intrusion state identification signal of at least two antenna modules 110 is the same as the level state of the corresponding output signal, indicating that there are at least two groups of antenna modules 110 that are not intruded by water. At this time, the historical antenna module 110 at the previous moment can be obtained. If the historical antenna module 110 exists in at least two groups of antenna modules 110 that are not intruded by water, the historical antenna module 110 is determined as the target antenna module 110 to avoid frequent switching of the antenna switching switch 123. If the historical antenna module 110 does not exist in the at least two groups of antenna modules 110 that are not intruded with water, any one group of antenna modules 110 in the at least two groups of antenna modules 110 that are not intruded with water may be determined as the target antenna module 110 .

[0073] For example, the intelligent switching antenna includes three groups of antenna modules 110, namely the first antenna module 110, the second antenna module 110 and the third antenna module 110. The first antenna module 110 corresponds to the first GPIO interface GPIO 1 in the control unit 121, the second antenna module 110 corresponds to the second GPIO interface GPIO 2 in the control unit 121, and the third antenna module 110 corresponds to the third GPIO interface GPIO 3 in the control unit 121. The level states of the water intrusion status identification signals corresponding to the three groups of antenna modules 110 have 7 combinations as shown in Table 1. Among them:

[0074] (1) If the water-immersion state identification signals corresponding to the three antenna modules 110 are all high-level signals, and are all the same as the level state of the output signal, it indicates that the user is in an upright floating state at this time, that is, the shoulders and above of the life jacket are all floating on the water surface, and the three antenna modules 110 are not immersed in the water. At this time, the antenna performance corresponding to the three antenna modules 110 is not affected by water, and the antenna performance and wireless communication effect are both good. Afterwards, the historical antenna module 110 at the previous moment can be obtained as the first antenna module 110. At this time, the first antenna module 110 exists in the three antenna modules 110, and the first antenna module 110 can be determined as the target antenna module 110.

[0075] (2) If the water intrusion state identification signals corresponding to the first antenna module 110 and the second antenna module 110 are both high-level signals, which are the same as the level state of the output signal, and the water intrusion state identification signal corresponding to the third antenna module 110 is a low-level signal, which is different from the level state of the output signal, it indicates that the user is facing the water surface at this time, the third antenna module 110 is immersed in the water, and the first antenna module 110 and the second antenna module 110 are not immersed in the water. Afterwards, the historical antenna module 110 at the previous moment can be obtained as the third antenna module 110. At this time, the third antenna module 110 does not exist in the two groups of antenna modules 110 that are not immersed in water. Any group of antenna modules 110 of the first antenna module 110 and the second antenna module 110 can be determined as the target antenna module 110. For example, the second antenna module 110 can be determined as the target antenna module 110, and the first antenna module 110 can also be determined as the target antenna module 110.

[0076] (3) If the water intrusion state identification signals corresponding to the first antenna module 110 and the third antenna module 110 are both high-level signals, which are the same as the level state of the output signal, and the water intrusion state identification signal corresponding to the second antenna module 110 is a low-level signal, which is different from the level state of the output signal, it indicates that the user is in a backstroke posture at this time, the second antenna module 110 is immersed in water, and the first antenna module 110 and the third antenna module 110 are not immersed in water. Afterwards, the historical antenna module 110 at the previous moment can be obtained as the third antenna module 110. At this time, the third antenna module 110 exists in the two groups of antenna modules 110 that are not immersed in water, and the third antenna module 110 can be determined as the target antenna module 110.

[0077] (4) If the water intrusion state identification signals corresponding to the first antenna module 110 are all high-level signals, which are the same as the level state of the output signal, and the water intrusion state identification signals corresponding to the second antenna module 110 and the third antenna module 110 are all low-level signals, which are different from the level state of the output signal, it indicates that the user is in an upright floating posture at this time, the second antenna module 110 and the third antenna module 110 are both immersed in water, and the first antenna module 110 is not immersed in water. At this time, the first antenna module 110 that is not immersed in water can be determined as the target antenna module 110.

[0078] (5) If the water intrusion state identification signals corresponding to the second antenna module 110 and the third antenna module 110 are both high-level signals, which are the same as the level state of the output signal, and the water intrusion state identification signal corresponding to the first antenna module 110 is a low-level signal, which is different from the level state of the output signal, it indicates that the user is in a sideways posture at this time, the first antenna module 110 is immersed in water, and the second antenna module 110 and the third antenna module 110 are not immersed in water. Afterwards, the historical antenna module 110 at the previous moment can be obtained as the second antenna module 110. At this time, the second antenna module 110 exists in the two groups of antenna modules 110 that are not immersed in water, and the second antenna module 110 can be determined as the target antenna module 110.

[0079] (6) If the water intrusion state identification signals corresponding to the second antenna module 110 are all high-level signals, which are the same as the level state of the output signal, and the water intrusion state identification signals corresponding to the first antenna module 110 and the third antenna module 110 are all low-level signals, which are different from the level state of the output signal, it indicates that the user is facing the water surface at this time, the first antenna module 110 and the third antenna module 110 are both immersed in water, and the second antenna module 110 is not immersed in water. At this time, the second antenna module 110 that is not immersed in water can be determined as the target antenna module 110.

[0080] (7) If the water-immersion state identification signals corresponding to the third antenna module 110 are all high-level signals, which are the same as the level state of the output signal, and the water-immersion state identification signals corresponding to the first antenna module 110 and the second antenna module 110 are all low-level signals, which are different from the level state of the output signal, it indicates that the user is in a backstroke posture, the first antenna module 110 and the second antenna module 110 are both immersed in water, and the third antenna module 110 is not immersed in water. At this time, the third antenna module 110 that is not immersed in water can be determined as the target antenna module 110.

[0081] Table 1

[0082]

[0083] In addition, when there is no identical result in all comparison results, that is, the water intrusion state identification signals corresponding to all antenna modules 110 are low-level signals, which are different from the level state of the output signal, indicating that the user's shoulders are all immersed in water at this time, and all antenna modules 110 are immersed in water. At this time, considering the distance between each antenna module 110 and the water surface, the antenna performance of the antenna module 110 at the shoulder of the life jacket is stronger than that of the antenna module 110 at other positions. Therefore, any group of antenna modules 110 at the shoulder of the life jacket can be determined as the target antenna module 110.

[0084] For example, take the case where the intelligent switching antenna includes three groups of antenna modules 110, and the user is in a backstroke posture, that is, the antenna 2 corresponding to the second antenna module 110 is immersed in the water, the antenna 1 corresponding to the first antenna module 110 is close to the water surface, and the antenna 3 corresponding to the third antenna module 110 is floating on the water surface. Three-dimensional electromagnetic simulation software is used to simulate the three groups of antenna modules 110 in a free state without being immersed in the water and in the corresponding immersed state according to the backstroke posture, and the antenna radiation efficiency corresponding to each group of antenna modules 110 in the two states is determined respectively, so as to show the advantages brought by the intelligent switching antenna in the embodiments of the present invention to the communication performance of the wireless communication device on the wearable life jacket. Figures 5 to 7 As shown, when the first antenna module 110 is close to the water surface, the antenna radiation efficiency is significantly reduced by about 25dB. When the second antenna module 110 is immersed in the water, the antenna radiation efficiency is reduced by about 41dB, and the loss is greater. Since the third antenna module 110 is always floating above the water surface, the antenna radiation effect is not greatly affected and is only reduced by about 0.7dB. Compared with the prior art in which only one antenna is set in the wireless communication device, if the position layout of the first antenna module 110 or the second antenna module 110 is adopted, the communication effect of the device will be greatly affected. Even if it is arranged in the third antenna position, the third antenna module 110 will be immersed in the water surface when the user is in an upright floating posture or facing the water surface, which will seriously reduce the antenna communication performance. However, in the embodiment of the present invention, by identifying the water immersion state of each antenna module 110, it can intelligently switch to the target antenna module 110 in the non-water immersion state for subsequent communication. For example, in the backstroke state, the embodiment of the present invention can ensure that the processor recognizes that the third antenna module 110 has not penetrated into the water, and then intelligently switches to the third antenna module 110 to work, thereby ensuring the antenna communication performance of the wireless communication device on the life jacket.

[0085] The intelligent switching antenna provided by the embodiment of the present invention is respectively provided with at least one group of antenna modules on the shoulder of the life jacket, in the direction extending from the shoulder to the back, and in the direction extending from the shoulder to the front chest. After the water intrusion state recognition module generates the output signal corresponding to each group of antenna modules, the water intrusion state recognition signal corresponding to each group of antenna modules is determined according to each output signal and the on-off state corresponding to the corresponding antenna module to identify the water intrusion state of each antenna module. According to all the water intrusion state recognition signals, the target antenna module that is above the water surface and not immersed in water under the buoyancy of the life jacket is determined from at least three groups of antenna modules, and the target antenna module is switched to for communication. When the user is in different postures, it is ensured that the target antenna module with higher antenna performance that is not immersed in water is always used for communication to ensure the wireless communication effect.

[0086] The embodiment of the present invention further provides an antenna switching method, which is applied to the intelligent switching antenna as described in any one of the above items. Figure 8is a flow chart of an antenna switching method provided by an embodiment of the present invention, such as Figure 8 As shown, the method includes steps 810 to 840.

[0087] Step 810: Generate output signals corresponding to at least three groups of antenna modules.

[0088] Step 820: for each antenna module, determine a water intrusion state identification signal corresponding to the antenna module based on the output signal and the on / off state of the antenna module; the on / off state is used to characterize the contact state between the antenna module and the conductive fluid.

[0089] Step 830: Based on all water intrusion status identification signals, determine a target antenna module that is not in water intrusion from the at least three groups of antenna modules.

[0090] Step 840: Switch to the target antenna module for communication.

[0091] The antenna switching method provided in the embodiment of the present invention determines the water intrusion status identification signal corresponding to each group of antenna modules according to each output signal and the on-off status corresponding to the corresponding antenna module after generating the output signal corresponding to each group of antenna modules, so as to identify the water intrusion status of each antenna module, and determines the target antenna module which is above the water surface and not immersed in water under the buoyancy of the life jacket from at least three groups of antenna modules according to all the water intrusion status identification signals, and switches to the target antenna module for communication, so as to ensure that the target antenna module with higher antenna performance which is not immersed in water is always used for communication, so as to ensure the wireless communication effect.

[0092] Further, the water intrusion state recognition module determines a water intrusion state recognition signal corresponding to the antenna module based on the output signal and the on / off state of the antenna module, including:

[0093] When the antenna module is in a conducting state, adjusting the level state of the output signal to obtain a water intrusion state identification signal corresponding to the antenna module;

[0094] When the antenna module is in an open circuit state, the output signal is determined as a water intrusion state identification signal corresponding to the antenna module.

[0095] Furthermore, the water intrusion state recognition module determines the target antenna module from the at least three groups of antenna modules based on all water intrusion state recognition signals, including:

[0096] Determine a comparison result between each of the water intrusion state identification signals and a corresponding output signal;

[0097] Based on all comparison results, a target antenna module is determined from the at least three groups of antenna modules.

[0098] Furthermore, the water intrusion state recognition module determines the target antenna module from the at least three groups of antenna modules based on all comparison results, including:

[0099] In the case that only one identical result is included in all the comparison results, the antenna module corresponding to the identical result is determined as the target antenna module; the identical result is used to indicate that the level state of the water intrusion state identification signal is the same as the level state of the corresponding output signal;

[0100] In the case that all the comparison results include at least two identical results, the target antenna module is determined based on the historical antenna module at the previous moment and the at least two identical results.

[0101] An embodiment of the present invention further provides a wearable communication device, comprising a life jacket and any one of the above-mentioned intelligent switching antennas, wherein the intelligent switching antenna is arranged on the life jacket. Under the buoyancy of the life jacket, it is ensured that at least one group of antenna modules in the intelligent switching antenna is in a non-water-infiltrated state, thereby ensuring the wireless communication effect.

[0102] On the other hand, the present invention further provides a computer program product, the computer program product comprising a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the antenna switching method provided by the above methods, the method comprising:

[0103] Generate output signals corresponding to at least three groups of antenna modules respectively;

[0104] For each of the antenna modules, based on the output signal and the on / off state of the antenna module, a water intrusion state identification signal corresponding to the antenna module is determined; the on / off state is used to characterize the contact state between the antenna module and the conductive fluid;

[0105] Based on all water intrusion state identification signals, determining a target antenna module in a non-water intrusion state from the at least three groups of antenna modules;

[0106] Switch to the target antenna module for communication.

[0107] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the antenna switching method provided by the above methods is implemented, and the method includes:

[0108] Generate output signals corresponding to at least three groups of antenna modules respectively;

[0109] For each of the antenna modules, based on the output signal and the on / off state of the antenna module, a water intrusion state identification signal corresponding to the antenna module is determined; the on / off state is used to characterize the contact state between the antenna module and the conductive fluid;

[0110] Based on all water intrusion state identification signals, determining a target antenna module in a non-water intrusion state from the at least three groups of antenna modules;

[0111] Switch to the target antenna module for communication.

[0112] The wearable communication device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Those of ordinary skill in the art can understand and implement it without creative work.

[0113] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent switching antenna, characterized in that: include: A water intrusion status recognition module and at least three groups of antenna modules connected to the water intrusion status recognition module, wherein at least one group of antenna modules is arranged on the shoulder of the life jacket, at least one group of antenna modules extends from the shoulder of the life jacket to the back, and at least one group of antenna modules extends from the shoulder of the life jacket to the front chest; The water intrusion state identification module is used to generate output signals corresponding to each of the at least three groups of antenna modules; for each of the antenna modules, based on the output signal and the on-off state of the antenna module, determine the water intrusion state identification signal corresponding to the antenna module; the on-off state is used to characterize the contact state between the antenna module and the conductive fluid; based on all water intrusion state identification signals, determine a target antenna module in a non-water intrusion state from the at least three groups of antenna modules; and switch to the target antenna module for communication; The water intrusion state recognition module determines a target antenna module from the at least three groups of antenna modules based on all water intrusion state recognition signals, including: Determine a comparison result between each of the water intrusion state identification signals and a corresponding output signal; Based on all comparison results, determining a target antenna module from the at least three groups of antenna modules; The water intrusion state recognition module determines a target antenna module from the at least three groups of antenna modules based on all comparison results, including: In the case that only one identical result is included in all the comparison results, the antenna module corresponding to the identical result is determined as the target antenna module; the identical result is used to indicate that the level state of the water intrusion state identification signal is the same as the level state of the corresponding output signal; In the case that all the comparison results include at least two identical results, the target antenna module is determined based on the historical antenna module at the previous moment and the at least two identical results.

2. The intelligent switching antenna according to claim 1, characterized in that: For each of the antenna modules, the antenna module includes an antenna and a detection signal line that do not contact each other, and the water intrusion status identification module is used to determine the water intrusion status identification signal corresponding to the antenna module based on the output signal and the on-off state between the antenna and the detection signal line.

3. The intelligent switching antenna according to claim 2, characterized in that: For each antenna module, the antenna is connected to a first inductor, the detection signal line is connected to a second inductor, the first inductor and the second inductor are both connected to the water intrusion status identification module, and the first inductor is grounded.

4. The intelligent switching antenna according to claim 3, characterized in that: The water intrusion status recognition module includes a control unit, a radio frequency wireless transceiver and an antenna switch connected in series, wherein: The control unit is connected to all the second inductors, and is used to generate an output signal corresponding to each of the second inductors, and determine a water intrusion state identification signal corresponding to each of the antenna modules based on the output signal and the on / off state of each of the antenna modules; and determine a target antenna module from the at least three groups of antenna modules based on all the water intrusion state identification signals; The radio frequency wireless transceiver is used to transmit signals between the control unit and the target antenna module; The antenna switching switch connects all antennas and all first inductors, and the antenna switching switch is used to establish a connection between the radio frequency wireless transceiver and a target antenna in the target antenna module.

5. The intelligent switching antenna according to any one of claims 1 to 4, characterized in that: The water intrusion state recognition module determines a water intrusion state recognition signal corresponding to the antenna module based on the output signal and the on / off state of the antenna module, including: When the antenna module is in a conducting state, adjusting the level state of the output signal to obtain a water intrusion state identification signal corresponding to the antenna module; When the antenna module is in an open circuit state, the output signal is determined as a water intrusion state identification signal corresponding to the antenna module.

6. An antenna switching method, characterized in that: Applied to the intelligent switching antenna according to any one of claims 1 to 5, the method comprises: Generate output signals corresponding to at least three groups of antenna modules respectively; For each of the antenna modules, based on the output signal and the on / off state of the antenna module, a water intrusion state identification signal corresponding to the antenna module is determined; the on / off state is used to characterize the contact state between the antenna module and the conductive fluid; Based on all water intrusion state identification signals, determining a target antenna module in a non-water intrusion state from the at least three groups of antenna modules; Switching to the target antenna module for communication; The step of determining a target antenna module in a non-water-intrusion state from the at least three groups of antenna modules based on all water-intrusion state identification signals includes: Determine a comparison result between each of the water intrusion state identification signals and a corresponding output signal; Based on all comparison results, determining a target antenna module from the at least three groups of antenna modules; The step of determining a target antenna module from the at least three groups of antenna modules based on all comparison results includes: In the case that only one identical result is included in all the comparison results, the antenna module corresponding to the identical result is determined as the target antenna module; the identical result is used to indicate that the level state of the water intrusion state identification signal is the same as the level state of the corresponding output signal; In the case that all the comparison results include at least two identical results, the target antenna module is determined based on the historical antenna module at the previous moment and the at least two identical results.

7. A wearable communication device, characterized in that: The invention comprises a life jacket and the intelligent switching antenna according to any one of claims 1 to 5, wherein the intelligent switching antenna is arranged on the life jacket.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a control unit in the intelligent switching antenna, the antenna switching method as claimed in claim 6 is implemented.

Images