Wireless communication link switching system and device

Abstract

The embodiment of the utility model provides a wireless communication link switching system and device, and relates to the communication technology, the system comprises a signal transmission device and a signal switching device; the signal transmission equipment comprises a battery module, a main control circuit, a signal comparison circuit, a signal receiving circuit and at least two communication modules, the battery module is respectively connected with the main control circuit, the signal comparison circuit, the signal receiving circuit and the at least two communication modules; the main control circuit is respectively connected with the signal comparison circuit, the signal receiving circuit and the at least two communication modules; the signal comparison circuit is connected with the signal receiving circuit; the signal receiving circuit is connected with the at least two communication modules; according to the scheme provided by the embodiment of the invention, the main control circuit can detect the signal strength condition of the target communication module accessed to the link in real time, and can remotely switch the communication link through the signal switching equipment when monitoring that the current signal strength is not greater than the preset signal strength, thereby improving the switching convenience of the link channel.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the field of communication technologies, and in particular to a wireless communication link switching system and device. Background Art

[0002] In marine communication, due to the relatively harsh marine environment, the stability of the wireless network communication connection of ships is crucial for their safe operation. Taking marine communication as an example, the existing wireless network communication system of ships includes a host and signal transmission equipment. The main function of the signal transmission equipment is to wirelessly transmit the signals processed by the host, as well as receive wireless signals sent by other remote wireless devices and output them to the host for processing (for example, the host transmits its own navigation data, or receives instruction data from the remote management party, etc., which are not limited to these).

[0003] Currently, the signal transmission equipment for ship communication is realized by connecting a 5G communication module and a satellite communication module in parallel. In actual application, technicians generally understand the current signal strength of the wireless communication by observing the lighting condition of the self-signal indicating LED lamp of the host (when the signal is stronger, the lighting brightness of the LED lamp beads becomes higher; conversely, when the signal is weaker, the lighting brightness of the LED lamp beads becomes lower or stops lighting). When observing that the lighting brightness of the LED lamp beads is lower or stops lighting, manually turn off or turn on the 5G communication module or the satellite communication module, so that the communication module with stronger signal strength is connected to the host (when two communication modules are simultaneously connected to the host, signal interference will occur, so only one communication module can be connected to the host).

[0004] Although the above method can meet the communication requirements, it requires technicians to visually observe the signal strength of the current module beside the equipment. When the signal of the current communication module weakens, if the technicians do not timely switch the channel, it will have an adverse impact on the data transceiver of the host and affect the safe navigation of the ship. Summary of the Utility Model

[0005] The embodiments of the present utility model provide a wireless communication link switching system and device, which can improve the convenience of communication link switching, ensure the integrity of communication data, and improve navigation safety.

[0006] In a first aspect, the embodiments of the present utility model provide a wireless communication link switching system, the system includes a signal transmission device and a signal switching device; the signal transmission device and the signal switching device are wirelessly communicatively connected.

[0007] Among them, the signal transmission device includes a battery module, a main control circuit, a signal comparison circuit, a signal receiving circuit, and at least two communication modules; the battery module is respectively connected to the main control circuit, the signal comparison circuit, the signal receiving circuit, and at least two of the communication modules; the main control circuit is respectively connected to the signal comparison circuit, the signal receiving circuit, and at least two of the communication modules; the signal comparison circuit is connected to the signal receiving circuit; the signal receiving circuit is connected to at least two of the communication modules.

[0008] The signal receiving circuit is used to control the corresponding target communication module to access the link according to the received target communication signal; the main control circuit is used to obtain the current signal strength generated by the target communication module; the signal comparison circuit is used to generate a link switching signal when the current signal strength is not greater than the preset signal strength; the signal switching device is used to switch the communication link corresponding to the target communication module when receiving the link switching signal.

[0009] Optionally, the main control circuit includes a host and a light-emitting diode; the signal comparison circuit includes a signal comparison unit and a signal transmitting unit; the signal receiving circuit includes a wireless receiving unit and at least two relays; wherein, the host and the light-emitting diode are connected in parallel, the light-emitting diode is connected to the comparison unit, the comparison unit and the signal transmitting unit are connected in series; the wireless receiving unit has at least two output terminals, one output terminal of the wireless receiving unit is connected to one of the relays, and one of the relays is connected in series with one of the communication modules.

[0010] Optionally, the signal comparison unit includes an operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a triode; the battery module includes a positive power supply output terminal and a negative power supply output terminal; one end of the first resistor is connected to the light-emitting diode; the other end of the first resistor is respectively connected to the second resistor and the inverting input terminal of the operational amplifier; the positive power supply output terminal is connected to one end of the third resistor, and the other end of the third resistor is respectively connected to one end of the fourth resistor and the non-inverting input terminal of the operational amplifier; the other end of the fourth resistor is respectively connected to the negative power supply output terminal, the negative power supply input terminal of the operational amplifier, and the emitter of the triode; one end of the fifth resistor is connected to the output terminal of the operational amplifier, and the other end of the fifth resistor is connected to the base of the triode; the positive power supply input terminal of the signal transmitting unit is respectively connected to the positive power supply input terminal of the operational amplifier, the host, the positive power supply output terminal, and one end of the third resistor; the negative power supply input terminal of the signal transmitting unit is connected to the collector of the triode.

[0011] Optionally, the signal transmitting unit includes a signal transmitting button; two signal transmitting contacts in the signal transmitting button are connected.

[0012] Optionally, at least two of the relays include a first relay and a second relay; the wireless receiving unit includes a first output terminal and a second output terminal, wherein: the positive power input terminal of the wireless receiving unit is respectively connected to the power input terminals of the signal transmitting unit, the first relay, and the second relay; the negative power input terminals of the first relay and the relay are respectively connected to the negative power input terminal of the wireless receiving unit; the first output terminal of the wireless receiving unit and the positive power input terminal of the first relay, and the second output terminal of the wireless receiving unit and the positive power input terminal of the second relay are connected.

[0013] Optionally, at least two of the communication modules include a 5G communication module and a satellite communication module; wherein, the 5G communication module and the satellite communication module are respectively connected to the host; the 5G communication module is connected to the first relay, and the satellite communication module is connected to the second relay; or, the 5G communication module is connected to the second relay, and the satellite communication module is connected to the first relay.

[0014] Optionally, the signal switching device includes a signal switching unit and a signal receiving unit, and the signal switching unit and the signal receiving unit are connected in parallel.

[0015] Optionally, the signal switching device further includes a buzzer and a power switch; wherein, the power switch is respectively connected in parallel with the signal switching unit and the signal receiving unit; the buzzer and the signal receiving unit are connected in series.

[0016] Optionally, the signal switching unit includes at least two signal switching buttons, and one signal switching button controls the communication signal corresponding to one communication module.

[0017] In a second aspect, an embodiment of the present invention provides a wireless communication link switching device, including a wireless communication link switching system integrated as described in any embodiment of the present invention.

[0018] The wireless communication link switching system and device provided by the embodiment of the present utility model, the system includes a signal transmission device and a signal switching device. Among them, the signal transmission device and the signal switching device are wirelessly connected. The signal transmission device provided by this embodiment includes a battery module, a main control circuit, a signal comparison circuit, a signal receiving circuit, and at least two communication modules; the signal receiving circuit controls the corresponding target communication module to access the link according to the received target communication signal; the main control circuit obtains the current signal strength generated by the target communication module; the signal comparison circuit generates a link switching signal when the current signal strength is not greater than the preset signal strength; the signal switching device switches the communication link corresponding to the target communication module when receiving the link switching signal. The solution provided by this embodiment, the main control circuit can detect the signal strength of the target communication module accessing the link in real time, and when it monitors that the current signal strength is not greater than the preset signal strength, it can remotely switch the communication link through the signal switching device, improving the convenience of switching the link channel. It improves the monitoring method that requires technical personnel to monitor beside the signal transmission device in the existing solution, achieving the beneficial effects of saving manpower, ensuring the integrity of communication data, and improving navigation safety.

[0019] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present utility model, nor is it used to limit the scope of the present utility model. Other features of the embodiments of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0021] Figure 1 is a schematic structural diagram of a wireless communication link switching system provided by an embodiment of the present utility model.

[0022] Figure 2 is a schematic structural diagram of a signal transmission device provided by an embodiment of the present utility model.

[0023] Figure 3 is a schematic structural diagram of a signal transmission device provided by an embodiment of the present utility model.

[0024] Figure 4 is a schematic structural diagram of a signal switching device provided by an embodiment of the present utility model.

[0025] Figure 5It is a schematic structural diagram of a wireless communication link switching device provided by an embodiment of the present utility model. Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0027] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0028] Figure 1 It is a schematic structural diagram of a wireless communication link switching system provided by an embodiment of the present utility model. This embodiment is applicable to the situation of real-time monitoring of the signal strength of the target communication module when the signal transmission device communicates based on the target communication module, and can timely switch the target communication module accessing the link when the signal strength of the target communication module is weak.

[0029] The wireless communication link switching system provided by the embodiment of the present utility model includes a signal transmission device 100 and a signal switching device 200. Specifically, please refer to Figure 1 , in Figure 1 , it includes a schematic structural diagram of the signal transmission device provided by the embodiment of the present utility model and a schematic structural diagram of the signal switching device provided by the embodiment of the present utility model.

[0030] In this embodiment, the signal transmission device 100 and the signal switching device 200 are wirelessly communicatively connected. The purpose of such a setting is that when the signal transmission device 100 detects that the signal strength of the target communication module currently accessing the communication link is weak, by sending a link switching signal to the signal switching device 200, the communication link corresponding to the target communication module can be remotely switched through the signal switching device 200. In the process of implementing this solution, there is no need for technicians to stand beside the signal transmission device 100 for monitoring. The technicians at the remote end can remotely switch the communication link through the signal switching device 200, achieving the beneficial effects of saving manpower, ensuring the integrity of communication data, and improving navigation safety.

[0031] Preferably, please refer to Figure 1, the signal transmission device 100 provided in this embodiment specifically includes a battery module 110, a main control circuit 120, a signal comparison circuit 130, a signal receiving circuit 140, and at least two communication modules 150; the battery module 110 is respectively connected to the main control circuit 120, the signal comparison circuit 130, the signal receiving circuit 140, and at least two communication modules 150; the main control circuit 120 is respectively connected to the signal comparison circuit 130, the signal receiving circuit 140, and at least two communication modules 150; the signal comparison circuit 130 is connected to the signal receiving circuit 140; the signal receiving circuit 140 is connected to at least two communication modules 150.

[0032] In this embodiment, the battery module 110 is used to connect to a 220V AC power supply, so as to provide a stable DC voltage for the main control circuit 120, the signal comparison circuit 130, the signal receiving circuit 140, and at least two communication modules 150 through the battery module 110. When each circuit in the signal transmission device 100 is powered on, the signal switching device 200 also works when powered on, and enables the signal transmission device 100 and the signal switching device 200 to be wirelessly communication-connected in the powered-on state.

[0033] Further, the way for the signal transmission device 100 and the signal switching device 200 to wirelessly communicate in this embodiment to automatically switch the target communication module of the access link is as follows: the signal receiving circuit 140 is used to control the corresponding target communication module to access the link according to the received target communication signal; the main control circuit 120 is used to obtain the current signal strength generated by the target communication module; the signal comparison circuit 130 is used to generate a link switching signal when the current signal strength is not greater than the preset signal strength; the signal switching device 200 is used to switch the communication link corresponding to the target communication module when receiving the link switching signal.

[0034] Among them, the essence of the wireless communication connection between the signal transmission device 100 and the signal switching device 200 in this embodiment is that communication components are integrated in both the signal receiving circuit 140 and the signal comparison circuit 130, and can communicate with the signal switching device 200.

[0035] Specifically, after the signal transmission device 100 and the signal switching device 200 are communicatively connected, since it is not clear which communication module in the current environment has a stronger signal strength when first accessing the target communication module, when first accessing the target communication module, any communication signal corresponding to a communication module in the signal switching device 200 can be selected as the target communication signal corresponding to the target communication module. Then, when the signal receiving circuit 140 receives the target communication signal, the access link corresponding to the target communication module is controlled. Further, the main control circuit 120 can obtain the current signal strength of the target communication module according to the data transmission situation of the target communication module. Then, the signal comparison circuit 130 compares the current signal strength with the preset signal strength. When the current signal strength is higher than the preset signal strength, the access link of the target communication module can be maintained unchanged. Until it is monitored that the current signal strength is not higher than the preset signal strength, the signal comparison circuit 130 generates a link switching signal. Thus, when the signal switching device 200 receives the link switching signal, the target communication signal can be converted into a communication link corresponding to another communication module, and the communication signal corresponding to the other communication module is updated as the target communication signal. So that after the signal receiving circuit 140 receives the updated target communication signal, the operation of controlling the access link of the target communication module corresponding to the updated target communication signal is repeatedly executed, so as to achieve the purpose of real-time monitoring of the communication signal in the wireless communication link switching system.

[0036] In this embodiment, the at least two communication modules 150 are not limited to including a 5G communication module and a satellite communication module, and may also include spread spectrum microwave communication, data radio communication, Bluetooth transmission, wireless broadband transmission, etc., which is specifically related to the actual application scenario.

[0037] The wireless communication link switching system provided by the embodiment of the present utility model includes a signal transmission device and a signal switching device. Among them, the signal transmission device and the signal switching device are wirelessly communicatively connected. The signal transmission device provided by this embodiment includes a battery module, a main control circuit, a signal comparison circuit, a signal receiving circuit, and at least two communication modules; the signal receiving circuit controls the corresponding target communication module to access the link according to the received target communication signal; the main control circuit obtains the current signal strength generated by the target communication module; when the current signal strength is not greater than the preset signal strength, the signal comparison circuit generates a link switching signal; when receiving the link switching signal, the signal switching device switches the communication link corresponding to the target communication module. In the solution provided by this embodiment, the main control circuit can detect the signal strength of the target communication module accessing the link in real time, and when it is monitored that the current signal strength is not greater than the preset signal strength, it can remotely switch the communication link through the signal switching device, improving the convenience of switching the link channel. It improves the way that technicians need to monitor beside the signal transmission device in the existing solution, achieving the beneficial effects of saving manpower, ensuring the integrity of communication data, and improving navigation safety.

[0038] Please refer to Figure 2 , Figure 2 FIG. is a schematic structural diagram of a signal transmission device provided by an embodiment of the present utility model. The relationship between this embodiment and the Figure 1 embodiment provided is a further refinement of the corresponding features of the signal transmission device provided in the Figure 1 embodiment.

[0039] Specifically, in the solution provided by this embodiment, the main control circuit 120 includes a main unit 121 and a light-emitting diode 122, and the main unit 121 and the light-emitting diode 122 are connected in parallel to reflect the signal strength of the transceiver signal generated by the main unit 121 and the target communication module through the brightness level of the light emitted by the light-emitting diode 122.

[0040] In this embodiment, the signal comparison circuit 130 includes a signal comparison unit 131 and a signal transmitting unit 132, and the signal comparison unit 131 and the signal transmitting unit 132 are connected in series to control the signal transmitting unit 132 to send a link switching signal to the signal switching device 200 when the signal comparison unit 131 compares that the current signal strength is not greater than the preset signal strength.

[0041] Optionally, when the signal strength is reflected by the brightness of the light-emitting diode 122, the higher the signal strength, the higher the current input voltage of the light-emitting diode, and vice versa, the lower the current input voltage of the light-emitting diode 122 when the signal strength is lower. Therefore, in this embodiment, the light-emitting diode 122 also needs to be connected to the signal comparison unit 131, so as to send the light-emitting voltage corresponding to the current light-emitting brightness of the light-emitting diode to the signal comparison unit 131, so that the signal comparison unit 131 compares the current light-emitting voltage with a preset voltage threshold to obtain the relationship between the current signal strength and the preset signal strength.

[0042] In this embodiment, the signal receiving circuit 140 includes a wireless receiving unit 141 and at least two relays. Among them, the wireless receiving unit 141 has at least two output terminals. One output terminal of the wireless receiving unit 141 is connected to a relay, and a relay is connected in series with a communication module. The purpose of this is that when the wireless receiving unit 141 receives the target communication signal generated by the signal switching device 200, it controls the target relay corresponding to the target communication signal to close, so that the target communication module corresponding to the target relay is connected to the communication link.

[0043] Further, please refer to Figure 3 , Figure 3 which is a schematic structural diagram of a signal transmission device provided by an embodiment of the present invention. The relationship between this embodiment and the Figure 2 provided embodiment is the further refinement of the corresponding features of the signal transmission device provided in the Figure 2 embodiment. In the following embodiments, electrical component symbols are used to describe the corresponding component names.

[0044] Before introducing Figure 3 , relevant explanations need to be made. In the Figure 3 example, the signal transmitting unit 132 mentioned in the above embodiment is implemented by the signal transmitter T4 in Figure 3 , the wireless receiving unit 141 mentioned in the above embodiment is implemented by the wireless receiver T5 in Figure 3 , and the host 121 mentioned in the above embodiment can be implemented by the main controller T2 in Figure 3 . Specifically, in the following embodiments, the signal transmitter T4 will be used to replace the signal transmitting unit 132 in the above embodiment, the wireless receiver T5 will be used to replace the wireless receiving unit 141 in the above embodiment, and the main controller T2 will be used to replace the host 121 in the above embodiment for relevant explanation.

[0045] The signal comparison unit 131 provided in this embodiment ( Figure 3(not marked in the figure) includes operational amplifier T3, first resistor R1, second resistor R2, third resistor R3, fourth resistor R4, fifth resistor R5, and triode Q1; the battery module T1 (or label 110) includes a positive power supply output terminal a and a negative power supply output terminal b.

[0046] Among them, one end of the first resistor R1 is connected to the light-emitting diode VL; the other end of the first resistor R1 is respectively connected to the second resistor R2 and the inverting input terminal c of the operational amplifier T3; the positive power supply output terminal a is connected to one end of the third resistor R3, and the other end of the third resistor R3 is respectively connected to one end of the fourth resistor R4 and the non-inverting input terminal d of the operational amplifier T3; the other end of the fourth resistor R4 is respectively connected to the negative power supply output terminal b, the negative power supply input terminal e of the operational amplifier T3, and the emitter of the triode Q1; one end of the fifth resistor R5 is connected to the output terminal f of the operational amplifier T3, and the other end of the fifth resistor R5 is connected to the base of the triode Q1.

[0047] The positive power supply input terminal h of the signal transmitter T4 is respectively connected to the positive power supply input terminal g of the operational amplifier T3, the main controller T2, the positive power supply output terminal a, and one end of the third resistor R3; the negative power supply input terminal i of the signal transmitter T4 is connected to the collector of the triode Q1.

[0048] In another implementation, the signal transmitter T4 includes a signal transmission button D1; two signal transmission contacts in the signal transmission button D1 are connected. The function of connecting the two signal transmission contacts in the signal transmission button D1 is to enable the signal transmitter T4 to transmit a link switching signal.

[0049] Preferably, the resistance value of the first resistor R1 provided in this embodiment can be 8 kΩ - 12 kΩ, preferably 10 kΩ; the resistance value of the second resistor can be 1.5 kΩ - 2.5 kΩ, preferably 2 kΩ; the resistance value of the third resistor R3 can be 800 Ω - 1000 Ω, preferably 900 Ω; the resistance value of the fourth resistor R4 can be 1.8 kΩ - 2.5 kΩ, preferably 2.1 kΩ; the resistance value of the fifth resistor R5 can be 2.0 kΩ - 2.5 kΩ, preferably 2.3 kΩ.

[0050] The model of the operational amplifier T3 provided in this embodiment can be UA741; the triode Q1 provided in this embodiment can be an NPN triode of model 9013.

[0051] For another implementation, please continue to refer to Figure 3 , in this embodiment, at least two relays include a first relay J1 and a second relay J2; the wireless receiver T5 includes a first output terminal l and a second output terminal m, and correspondingly, at least two communication modules 150 include a 5G communication module T6 and a satellite communication module T7.

[0052] Among them, the positive power input terminal j of the wireless receiver T5 is respectively connected to the power input terminals of the signal transmitter T4, the first relay J1, and the second relay J2; the negative power input terminals of the first relay J1 and the relay J2 are respectively connected to the negative power input terminal k of the wireless receiver T5; the first output terminal l of the wireless receiver T5 and the positive power input terminal of the first relay J1, and the second output terminal m of the wireless receiver T5 and the positive power input terminal of the second relay J2 are connected.

[0053] Among them, the 5G communication module T6 and the satellite communication module T7 are respectively connected to the main controller T2; the 5G communication module T6 is connected to the first relay J1, and the satellite communication module T7 is connected to the second relay J2; alternatively, the 5G communication module T6 is connected to the second relay J2, and the satellite communication module T7 is connected to the first relay J1. This embodiment provides a connection method in which the relays and the communication modules correspond one by one. Among them, both the 5G communication module T6 and the satellite communication module T7 are mature technologies of existing solutions, and this embodiment does not limit them here.

[0054] Preferably, the models of the first relay J1 and the second relay J2 provided in this embodiment can be DC12V.

[0055] For another implementation manner, please refer to Figure 4 , Figure 4 is a structural schematic diagram of a signal switching device provided by an embodiment of the present invention. The relationship between this embodiment and Figure 1 The provided embodiment is a further refinement of the corresponding features of the signal switching device provided in Figure 1 the embodiment.

[0056] Specifically, please refer to Figure 4 , the signal switching device 200 provided in this embodiment includes a signal switching unit T9 and a signal receiving unit T8, and the signal switching unit T9 and the signal receiving unit T8 are connected in parallel. Among them, the signal receiving unit T8 is used to receive the link switching signal transmitted by the signal transmitter T4, and the signal switching unit T9 is used to switch the communication link corresponding to the target communication module.

[0057] For another preferred embodiment, please continue to refer to Figure 4, on the basis of the above embodiment, the signal switching device provided in this embodiment further includes a buzzer B and a power switch S1. Among them, the power switch S1 is connected in parallel with the signal switching unit T9 and the signal receiving unit T8 respectively; the buzzer B and the signal receiving unit T8 are connected in series. The power switch S1 is used to control the power-on of the signal switching device 200 to achieve a communication connection with the signal transmission device 100 in the powered-on state. The buzzer B is used to generate a beeping sound when the signal receiving unit T8 receives a link switching signal to remind the technician to perform a link channel switch and improve the timeliness of the link channel switch.

[0058] Among them, the signal switching unit T9, the signal receiving unit T8, the wireless receiver T5, and the signal transmitter T4 provided in this embodiment can be respectively implemented by finished products of a wireless transmission component and a receiving component with the model ZDQ-4000.

[0059] In another preferred implementation, the signal switching unit T9 provided in this embodiment includes at least two signal switching buttons ( Figure 4 D1-Dn in the example, one symbol represents one signal switching button), and one signal switching button controls the communication signal corresponding to one communication module. For example, when the communication modules are a 5G communication module T6 and a satellite communication module T7 respectively, the corresponding signal switching buttons include a 5G switching button and a satellite switching button. Taking the current pressing of the 5G switching button as an example, the wireless receiver T5 receives the corresponding 5G communication signal, thereby controlling the closing of the relay J2, and further enabling the 5G communication module T6 to access the link, etc.

[0060] Optionally, to achieve the durability of the signal switching device 200, the signal switching device 200 further includes two poles of a storage battery G1 and two poles of a charging socket CZ1, so that when the storage battery G1 is out of power, an external 12V power charger plug can be inserted into the jack of the charging socket CZ1 to charge the storage battery G1.

[0061] Preferably, the storage battery in this embodiment is a lithium storage battery with the model 10Ah / 12V; the buzzer B is an active continuous sound buzzer B alarm with the model FM12V.

[0062] The wireless communication link switching system provided by the utility model performs a complete implementation process of communication link switching. Before introducing the implementation process of this embodiment, the signal switching unit T9 including a 5G switching button and a satellite switching button is used as an example for explanation. After the AC 220V power supply enters the power input terminal of the battery module T1, the a and b terminals of the battery module T1 output a stable DC 12V power supply to enter the host control circuit, the comparison transmission circuit and the receiving control circuit. After the technician turns on the power switch S1 of the signal switching device, the signal receiving unit T8 and the signal switching unit T9 are powered on. After the main controller T2 is powered by the battery module T1, the technician presses any signal switching button (such as the 5G switching button) in the signal switching unit T9 with a finger as needed when using it for the first time, and the signal switching unit T9 transmits the 5G communication signal corresponding to the 5G switching button; after the wireless receiver T5 receives the 5G communication signal, its corresponding m foot outputs a high level and enters the positive power input terminal of the relay J2; then, the relay J2 is powered on to attract its control power input terminal and the normally open contact terminal to close. In this way, the 5G communication module T6 will be powered on and work, and the data port of the 5G communication module T6 will be connected to the data port of the main controller T2 respectively, and the main controller T2 will send and receive data through the 5G communication module T6. In actual situations, when the main controller T2 is in its own function, its own signal indicating the light-emitting tube VL emits light of different brightness according to the signal strength of the data sent and received by the 5G communication module T6 (that is, when the signal is strong, the input working voltage of the indicating light-emitting tube VL is relatively high, and vice versa, the input working voltage is relatively low); when the main controller T2 receives and sends a relatively strong signal, the voltage signal at the positive electrode of the indicating light-emitting tube VL is relatively high, and the voltage signal is divided by resistors R1 and R2 (for example, 2.1V), which is higher than the 12V power supply and enters the voltage of pin 3 of the operational amplifier T3 after being divided by resistors R3 and R4 (for example, 2V). In this way, the f pin of the operational amplifier T3 outputs a low level, and the signal transmitter T4 will not emit a link switching signal. When the receiving and sending signals of the main controller T2 are relatively weak and the voltage signal at the positive electrode of the light-emitting tube VL is relatively low, the voltage signal is divided by resistors R1 and R2 (for example, 1.9V), which is lower than the 12V power supply and then divided by resistors R3 and R4 to enter the 3-pin voltage of the operational amplifier T3 (for example, 2V). In this way, the f-pin of the operational amplifier T3 outputs a high level, which is stepped down and limited by resistor R5 to enter the base of the transistor Q1. The transistor Q1 is turned on and the collector outputs a low level to enter the negative power input terminal of the signal transmitter T4. Since the two signal transmission contacts in the signal transmission button D1 of the signal transmitter T4 are pre-connected together, the signal transmitter T4 will transmit a link switching signal.Within a certain range (e.g., 4000 meters), after the signal receiving unit T8 in the signal switching device carried by the technician receives the link switching signal, the high level will enter the positive power input terminal of the buzzer B. Then, the buzzer B is powered on and emits a sound to prompt the technician. The technician will clearly know that the wireless data signal received or transmitted by the current 5G communication module T6 is weak and a link switch is required. To switch to the port corresponding to the satellite communication module T7 and connect it to the data port of the main controller T2 to ensure the integrity of data reception and transmission. Then, according to the need, within a certain range, the technician presses the satellite switch button in the signal switching unit T9 with a finger, and the signal switching unit T9 emits a satellite communication signal corresponding to the satellite switch button. After the wireless receiver T5 receives the satellite signal, the high level output from its corresponding pin l enters the positive power input terminal of the relay J1. Furthermore, the relay J1 is powered on and its control power input terminal and normally open contact terminal are closed. In this way, the satellite communication module T7 will be powered on and work, and the data port of the satellite communication module T7 will be connected to the data port of the main controller T2 respectively, and the main controller T2 will receive and transmit data through the satellite communication module T7, etc.

[0063] The wireless communication link switching system provided by the embodiment of the present invention, the wireless communication link switching system, includes a signal transmission device and a signal switching device. The main control circuit can detect the signal strength of the target communication module of the access link in real time, and when it detects that the current signal strength is not greater than the preset signal strength, it can remotely switch the communication link through the signal switching device, improving the convenience of link channel switching. It improves the existing method that requires technicians to monitor beside the signal transmission device, achieving the beneficial effects of saving manpower, ensuring the integrity of communication data, and improving navigation safety.

[0064] Please refer to Figure 5 , Figure 5 is a circuit structure schematic diagram of a wireless communication link switching device provided by the embodiment of the present invention. The wireless communication link switching device provided by the embodiment of the present invention includes the integration of the wireless communication link switching system provided by any of the above embodiments.

[0065] Among them, the signal switching device in the wireless communication link switching system can be integrated in a component box for technicians to carry around, improving the work convenience of technicians.

[0066] Since the wireless communication link switching device provided by the embodiment of the present invention adopts all the technical solutions of all the above embodiments of the wireless communication link switching system, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0067] The above specific embodiments do not constitute a limitation on the protection scope of the present utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A wireless communication link switching system, characterized in that: The system comprises a signal transmission device and a signal switching device; the signal transmission device and the signal switching device are wirelessly connected; Wherein, the signal transmission device comprises a battery module, a main control circuit, a signal comparison circuit, a signal receiving circuit and at least two communication modules; the battery module is respectively connected to the main control circuit, the signal comparison circuit, the signal receiving circuit and at least two communication modules; the main control circuit is respectively connected to the signal comparison circuit, the signal receiving circuit and at least two communication modules; the signal comparison circuit is connected to the signal receiving circuit; the signal receiving circuit is connected to at least two communication modules; The signal receiving circuit is used to control the corresponding target communication module to access the link according to the received target communication signal; The main control circuit is used to obtain the current signal strength generated by the target communication module; The signal comparison circuit is used to generate a link switching signal when the current signal strength is not greater than a preset signal strength; The signal switching device is used to switch the communication link corresponding to the target communication module when receiving the link switching signal.

2. The wireless communication link switching system according to claim 1, characterized in that: The main control circuit includes a host and a light-emitting tube; the signal comparison circuit includes a signal comparison unit and a signal transmission unit; the signal receiving circuit includes a wireless receiving unit and at least two relays; Among them, the host and the light-emitting tube are connected in parallel, the light-emitting tube and the comparison unit are connected, and the comparison unit and the signal transmitting unit are connected in series; the wireless receiving unit includes at least two output ends, one output end of the wireless receiving unit is connected to one of the relays, and one of the relays and one of the communication modules are connected in series.

3. The wireless communication link switching system according to claim 2, characterized in that: The signal comparison unit includes an operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a triode; the battery module includes a positive power supply output terminal and a negative power supply output terminal; One end of the first resistor is connected to the light-emitting diode; the other end of the first resistor is respectively connected to the second resistor and the reverse input end of the operational amplifier; The positive power supply output terminal is connected to one end of the third resistor, and the other end of the third resistor is connected to one end of the fourth resistor and the non-inverting input end of the operational amplifier respectively; The other end of the fourth resistor is respectively connected to the negative power supply output end, the negative power supply input end of the operational amplifier and the emitter of the triode; One end of the fifth resistor is connected to the output end of the operational amplifier, and the other end of the fifth resistor is connected to the base of the transistor; The positive power input terminal of the signal transmitting unit is respectively connected to the positive power input terminal of the operational amplifier, the host, the positive power output terminal and one end of the third resistor; the negative power input terminal of the signal transmitting unit is connected to the collector of the transistor.

4. The wireless communication link switching system according to claim 2, characterized in that: The signal transmitting unit includes a signal transmitting button; The two signal transmitting contacts in the signal transmitting key are connected.

5. The wireless communication link switching system according to claim 2, characterized in that: At least two of the relays include a first relay and a second relay; the wireless receiving unit includes a first output terminal and a second output terminal, wherein: The positive power input terminal of the wireless receiving unit is connected to the power input terminals of the signal transmitting unit, the first relay and the second relay respectively; the negative power input terminals of the first relay and the relay are connected to the negative power input terminal of the wireless receiving unit respectively; The first output end of the wireless receiving unit is connected to the positive power input end of the first relay, and the second output end of the wireless receiving unit is connected to the positive power input end of the second relay.

6. The wireless communication link switching system according to claim 5, characterized in that: At least two of the communication modules include a 5G communication module and a satellite communication module; Wherein, the 5G communication module and the satellite communication module are respectively connected to the host; The 5G communication module is connected to the first relay, and the satellite communication module is connected to the second relay; Or, the 5G communication module is connected to the second relay, and the satellite communication module is connected to the first relay.

7. The wireless communication link switching system according to claim 1, characterized in that: The signal switching device comprises a signal switching unit and a signal receiving unit, and the signal switching unit and the signal receiving unit are connected in parallel.

8. The wireless communication link switching system according to claim 7, characterized in that: The signal switching device also includes a buzzer and a power switch; Wherein, the power switch is connected in parallel with the signal switching unit and the signal receiving unit respectively; The buzzer and the signal receiving unit are connected in series.

9. The wireless communication link switching system according to claim 7, characterized in that: The signal switching unit includes at least two signal switching buttons, and one of the signal switching buttons controls a communication signal corresponding to one of the communication modules.

10. A wireless communication link switching device, characterized in that: It includes a wireless communication link switching system integrated therein as described in any one of claims 1-9.

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