CN109586808B - Device for preventing USB3.0 equipment from interfering WIFI module - Google Patents
Device for preventing USB3.0 equipment from interfering WIFI module Download PDFInfo
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- CN109586808B CN109586808B CN201811596226.7A CN201811596226A CN109586808B CN 109586808 B CN109586808 B CN 109586808B CN 201811596226 A CN201811596226 A CN 201811596226A CN 109586808 B CN109586808 B CN 109586808B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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Abstract
The invention discloses a device for preventing USB3.0 equipment from interfering a WIFI module, which comprises a control module and a link state adjusting module; the control module is used for being connected with the WIFI module; the control module is used for carrying out interference detection on the slave equipment before identifying and initializing the slave equipment accessed to the USB3.0 interface; the control module is also used for generating a corresponding control signal after the slave equipment is judged to generate interference on the WIFI module and the WIFI module is in a signal receiving state; the link state adjusting module is used for connecting between the USB3.0 interface and the control module; the link state adjusting module is used for controlling the transmission state of the data transmission link of the USB3.0 interface according to the control signal generated by the control module. The method and the device can effectively avoid the interference of the USB3.0 data transmission on the communication of the WIFI module, and fully utilize the high data transmission rate provided by the USB3.0 technology.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a device for preventing USB3.0 equipment from interfering a WIFI module.
Background
The high rate of the USB3.0 technology in data transmission brings convenience to people, a USB3.0 control chip and a USB3.0 interface are gradually matched in electronic equipment such as a computer, and the electronic equipment can be connected with slave equipment through the USB3.0 interface to perform high-speed data transmission. The electronic device generally further includes a wireless network module, which can send and receive wireless signals, and 2.4GHz wireless communication is commonly used. Although the USB3.0 transmission frequency is 5.0GHz serial, since the USB3.0 divides 4 data transmission links into 2 groups for data transmission in different directions, and the reference frequency of each data transmission link is 2.5GHz, which is close to 2.4GHz, and signals are not completely distributed in 2.4GHz, interference is generated on 2.4GHz wireless communication, and the receiving sensitivity of a 2.4GHz wireless network is affected.
In the prior art, in order to solve the problem of interference in the USB3.0 data transmission process, a shielding cover is added to the USB3.0 interface to perform electromagnetic shielding, or the USB3.0 transmission mode is switched to the USB2.0 transmission mode when interference occurs.
However, since different slave devices may generate different interferences when transmitting data through the USB3.0 technology, there is no uniform specification for the design of the shielding cover, and the shielding effect of the shielding cover designed by different manufacturers is also very different, the effect of increasing the shielding cover on solving the interference problem may not be optimistic; in addition, the data transmission rate of the USB3.0 transmission mode can reach 5.0GHz, while the data transmission rate of the USB2.0 transmission mode can reach 480MHz, and if the USB3.0 transmission mode is switched to the USB2.0 transmission mode when interference occurs, the influence on the data transmission rate is too large, and the convenience of high data transmission rate brought by the USB3.0 technology cannot be fully utilized.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a device for preventing a USB3.0 device from interfering a WIFI module, which can effectively avoid interference of USB3.0 data transmission on communication of the WIFI module, and fully utilize a high data transmission rate provided by a USB3.0 technology.
In order to solve the above technical problem, an embodiment of the present invention provides an apparatus for preventing a USB3.0 device from interfering a WIFI module, including a control module and a link state adjustment module; wherein the content of the first and second substances,
the control module is used for being connected with the WIFI module; the control module is used for carrying out interference detection on the slave equipment before identifying and initializing the slave equipment accessed to the USB3.0 interface; the control module is further used for generating a corresponding control signal after the slave device is judged to generate interference on the WIFI module and the WIFI module is in a signal receiving state;
the link state adjusting module is used for being connected between the USB3.0 interface and the control module; the link state adjusting module is used for controlling the transmission state of the data transmission link of the USB3.0 interface according to the control signal generated by the control module.
Further, the control module specifically includes:
the interference detection unit is used for detecting a first noise intensity of the WIFI module before the slave device accessing the USB3.0 interface is identified and initialized; after the slave device completes identification and initialization, detecting a second noise intensity of the WIFI module;
the interference judging unit is used for judging whether the slave equipment generates interference on the WIFI module according to the first noise intensity and the second noise intensity;
the WIFI state judging unit is used for judging whether the WIFI module is in a signal receiving state or not;
and the control signal generation unit is used for generating the control signal after judging that the slave equipment generates interference on the WIFI module and the WIFI module is in a signal receiving state.
Further, the data transmission link of the USB3.0 interface includes a data transmission link and a data reception link; the link state adjustment module specifically includes:
the first switch unit is used for controlling the on-off state of the data transmission link according to the control signal;
and the second switch unit is used for controlling the on-off state of the data receiving link according to the control signal.
Further, the control module further comprises a first link interference detection unit and a first link interference judgment unit;
the first link interference detection unit is used for detecting a third noise intensity of the WIFI module after judging that the slave device generates interference on the WIFI module; the third noise intensity is the noise intensity of the WIFI module when the data sending link is disconnected and the data receiving link is connected;
the first link interference judging unit is configured to judge whether the first noise strength is the same as the third noise strength;
the first link interference detection unit is further configured to detect a fourth noise intensity of the WIFI module after the first link interference judgment unit determines that the first noise intensity is different from the third noise intensity; the fourth noise intensity is the noise intensity of the WIFI module when the data receiving link is disconnected and the data sending link is connected;
the first link interference judging unit is further configured to judge whether the first noise strength is the same as the fourth noise strength.
Further, the control signal generating unit is specifically configured to:
after the first link interference judgment unit judges that the first noise intensity is the same as the third noise intensity and the WIFI module is in a signal receiving state, generating a first switch control signal; the first switch control signal is used for controlling the first switch unit to be switched off and controlling the second switch unit to be switched on;
after the first link interference judgment unit judges that the first noise intensity is the same as the fourth noise intensity and the WIFI module is in a signal receiving state, generating a second switch control signal; the second switch control signal is used for controlling the first switch unit to be closed and controlling the second switch unit to be opened;
after the first link interference judgment unit judges that the third noise intensity and the fourth noise intensity are both different from the first noise intensity and the WIFI module is in a signal receiving state, generating a third switch control signal; wherein the third switch control signal is used for controlling the first switch unit and the second switch unit to be turned off.
Further, the data sending link comprises a first data sending link and a second data sending link, and the data receiving link comprises a first data receiving link and a second data receiving link;
the first switching unit includes a first high frequency switch and a second high frequency switch; the first high-frequency switch controls the on-off state of the first data transmission link according to the control signal, and the second high-frequency switch controls the on-off state of the second data transmission link according to the control signal;
the second switching unit includes a third high frequency switch and a fourth high frequency switch; the third high-frequency switch controls the on-off state of the first data receiving link according to the control signal, and the fourth high-frequency switch controls the on-off state of the second data receiving link according to the control signal.
Further, the data transmission link of the USB3.0 interface includes a data transmission link and a data reception link; the link state adjustment module specifically includes:
a first attenuation unit for controlling the attenuation of the data transmission link according to the control signal;
and the second attenuation unit is used for controlling the attenuation of the data receiving link according to the control signal.
Further, the control module further comprises a second link interference detection unit and a second link interference judgment unit;
the second link interference detection unit is used for detecting a fifth noise intensity of the WIFI module after judging that the slave device generates interference on the WIFI module; the fifth noise intensity is the noise intensity of the WIFI module when the data transmission link has a preset attenuation and the data receiving link does not have the preset attenuation;
the second link interference judging unit is configured to judge whether the first noise strength is the same as the fifth noise strength;
the second link interference detection unit is further configured to detect a sixth noise intensity of the WIFI module after the second link interference judgment unit determines that the first noise intensity is different from the fifth noise intensity; the sixth noise intensity is the noise intensity of the WIFI module when the data receiving link has a preset attenuation and the data transmitting link has no preset attenuation;
the second link interference judging unit is further configured to judge whether the first noise strength is the same as the sixth noise strength.
Further, the control signal generating unit is specifically configured to:
after the second link interference judgment unit judges that the first noise intensity is the same as the fifth noise intensity and the WIFI module is in a signal receiving state, generating a first attenuation control signal; the first attenuation control signal is used for controlling the attenuation of the first attenuation unit to be a preset attenuation and controlling the second attenuation unit to have no preset attenuation;
after the second link interference judgment unit judges that the first noise intensity is the same as the sixth noise intensity and the WIFI module is in a signal receiving state, generating a second attenuation control signal; the second attenuation control signal is used for controlling the first attenuation unit to have no preset attenuation and controlling the attenuation of the second attenuation unit to be a preset attenuation;
after the second link interference judgment unit judges that the fifth noise intensity and the sixth noise intensity are both different from the first noise intensity and the WIFI module is in a signal receiving state, generating a third attenuation control signal; the third attenuation control signal is used for controlling the attenuation amounts of the first attenuation unit and the second attenuation unit to be preset attenuation amounts.
Further, the data sending link comprises a first data sending link and a second data sending link, and the data receiving link comprises a first data receiving link and a second data receiving link;
the first attenuation unit comprises a first variable attenuator and a second variable attenuator; the first variable attenuator controls the attenuation amount of the first data transmission link according to the control signal, and the second variable attenuator controls the attenuation amount of the second data transmission link according to the control signal;
the second attenuation units respectively comprise a third variable attenuator and a fourth variable attenuator; the third variable attenuator controls the attenuation of the first data receiving link according to the control signal, and the fourth variable attenuator controls the attenuation of the second data receiving link according to the control signal.
Compared with the prior art, the embodiment of the invention provides a device for preventing USB3.0 equipment from interfering a WIFI module, which can generate a control signal through a control module when slave equipment interferes the WIFI module and the WIFI module is in a data receiving state, control a link state adjusting module to adjust the transmission state of a data transmission link, effectively avoid interference of USB3.0 data transmission on communication of the WIFI module, and fully utilize high data transmission rate provided by the USB3.0 technology.
Drawings
Fig. 1 is a block diagram of a structure of an apparatus for preventing a USB3.0 device from interfering with a WIFI module according to embodiment 1 of the present invention;
fig. 2 is a block diagram of a structure of an apparatus for preventing a USB3.0 device from interfering with a WIFI module according to embodiment 2 of the present invention;
fig. 3 is a block diagram of an apparatus for preventing a USB3.0 device from interfering with a WIFI module according to embodiment 3 of the present invention;
fig. 4 is a block diagram of an apparatus for preventing a USB3.0 device from interfering with a WIFI module according to embodiment 4 of the present invention;
fig. 5 is a block diagram of an apparatus for preventing a USB3.0 device from interfering with a WIFI module according to embodiment 5 of the present invention;
fig. 6 is a block diagram of a structure of an apparatus for preventing a USB3.0 device from interfering with a WIFI module according to embodiment 6 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a block diagram of a device for preventing a USB3.0 device from interfering a WIFI module according to embodiment 1 of the present invention; specifically, the embodiment of the invention provides a device for preventing a USB3.0 device from interfering a WIFI module, which includes a control module 1 and a link state adjustment module 2; wherein the content of the first and second substances,
the control module 1 is used for being connected with the WIFI module 3; the control module 1 is used for detecting interference of slave equipment accessed to the USB3.0 interface 4 before the slave equipment is identified and initialized; the control module 1 is further configured to generate a corresponding control signal after it is determined that the slave device interferes with the WIFI module 3 and the WIFI module 3 is in a signal receiving state;
the link state adjusting module 2 is used for connecting between the USB3.0 interface 4 and the control module 1; the link state adjusting module 2 is configured to control a transmission state of a data transmission link of the USB3.0 interface 4 according to the control signal generated by the control module 1.
Specifically, the control module may determine whether the slave device is connected to the USB3.0 interface by detecting a resistance of a pull-up resistor of the USB3.0 interface. After the fact that the slave device is connected to the USB3.0 interface is determined, before the control module identifies and initializes the slave device, the control module conducts interference detection on the slave device to judge whether the slave device interferes with the WIFI module. Meanwhile, the WIFI module is connected with the control module, and the control module can acquire whether the data transmission state of the WIFI module is a data receiving state. The control module starts an anti-interference mechanism when judging that the slave equipment interferes with the WIFI module and the WIFI module is in a data receiving state, generates a corresponding control signal and transmits the control signal to the link state adjusting module, and the control link state adjusting module adjusts the transmission state of a data transmission link between the USB3.0 interface and the control module according to the received control signal sent by the control module, so that the interference generated by the slave equipment is prevented from influencing the data receiving process of the WIFI module.
According to the device for preventing the USB3.0 equipment from interfering the WIFI module, provided by the embodiment of the invention, the transmission state of the data transmission link of the USB interface is adjusted when the slave equipment is judged to interfere the WIFI module and the WIFI module is in the data receiving state, so that the slave equipment can be effectively prevented from interfering the receiving process of the WIFI module; meanwhile, when the WIFI module is in a data sending state, data transmission between the slave device and the control module is kept, the switching time slot between the data receiving state and the data sending state of the WIFI module is short, high-speed data transmission can still be carried out through the USB3.0 technology, the USB3.0 transmission mode is not switched into the USB2.0 transmission mode, the influence on the data transmission between the slave device and the control module is small, and therefore the high data transmission rate provided by the USB3.0 technology can be fully utilized while the USB3.0 device is effectively prevented from generating interference on the WIFI module.
It should be noted that the WIFI module is specifically a 2.4GHz communication WIFI module, and the WIFI module may include a radio frequency switch, an antenna, a transmission link and a reception link of the WIFI module, and the like. Because the interference on the WIFI module may affect the receiving sensitivity of the WIFI module and affect the data receiving process of the WIFI module when data transmission is performed through the USB3.0 technology, but the data sending process of the WIFI module is not affected, the embodiment of the present invention only defines that the control module generates a corresponding control signal to control when it is determined that the slave device interferes with the WIFI module and the WIFI module is in the data receiving state, and whether another signal generated by the control module controls the link state adjustment module to adjust the transmission state of the data transmission link after the WIFI module is in the data sending state or the USB3.0 interface is pulled out from the device, which is not limited in the embodiment of the present invention.
Fig. 2 is a block diagram of a device for preventing a USB3.0 device from interfering a WIFI module according to embodiment 2 of the present invention; further, the control module 1 specifically includes:
the interference detection unit 5 is configured to detect a first noise intensity of the WIFI module 3 before identifying and initializing the slave device accessing the USB3.0 interface 4; after the slave device completes identification and initialization, detecting a second noise intensity of the WIFI module 3;
the interference judging unit 6 is configured to judge whether the slave device generates interference on the WIFI module 3 according to the first noise strength and the second noise strength;
a WIFI state determination unit 7, configured to determine whether the WIFI module 3 is in a signal receiving state;
a control signal generating unit 8, configured to generate the control signal after determining that the slave device interferes with the WIFI module 3 and the WIFI module 3 is in a signal receiving state.
Specifically, the control module comprises an interference detection unit, an interference judgment unit, a WIFI state judgment unit and a control signal generation unit, and after the control module determines that the slave device is connected to the USB3.0 interface, the control module does not immediately identify and initialize the slave device, but detects the first noise intensity existing in the communication network of the WIFI module when the slave device is not associated with the control module; after the first noise intensity is detected, the control module identifies and initializes the slave device, and detects a second noise intensity of the communication network of the WIFI module. The interference judging unit determines whether the slave device interferes with the WIFI module according to the magnitude relation between the first noise intensity and the second noise intensity, and the control signal generating unit generates the control signal after the WIFI state judging unit judges that the WIFI module is in a signal receiving state. The device for generating interference on the WIFI module is not necessarily generated by the slave device accessing the USB3.0 interface, and may be generated by other devices, for example, multiple bluetooth devices accessing the master device where the control module is located or devices where other communication channels are adjacent to the communication channel of the WIFI module, the device for preventing the USB3.0 device from interfering with the WIFI module provided in the embodiment of the present invention detects the noise intensity of the WIFI module in the data transmission association sequence between the slave device and the control module, thereby determining whether the noise intensity of the WIFI module is generated by the slave device accessing the USB3.0 interface, avoiding interruption of the data transmission process between the slave device and the control module when the slave device does not interfere with the WIFI module, and further fully utilizing the high data transmission rate provided by the USB3.0 technology.
Optionally, a specific interference degree caused by the slave device to the WIFI module is detected, and the link state adjustment module adaptively adjusts the data transmission link according to the specific interference degree. Different degrees of interference may be adapted differently.
Fig. 3 is a block diagram of a device for preventing a USB3.0 device from interfering a WIFI module according to embodiment 3 of the present invention; further, the data transmission link of the USB3.0 interface 4 includes a data transmission link and a data reception link; the link state adjustment module 2 specifically includes:
the first switch unit 9 is configured to control an on-off state of the data transmission link according to the control signal;
a second switch unit 10 for controlling the on-off state of the data receiving link according to the control signal
Specifically, the link state adjustment module adjusts the on-off of the data transmission link to control the transmission state of the data transmission link, and specifically includes a first switch unit and a second switch unit, which respectively control the data transmission link and the data reception link.
It should be noted that, in the apparatus for preventing the USB3.0 device from interfering with the WIFI module provided in the embodiment of the present invention, the data transmission interruption between the slave device and the control module is controlled by controlling the on-off state of the data transmission link, the data transmission between the slave device and the control module is always performed separately, only the data transmission between the two parties cannot receive the data sent by the other party due to the disconnection of the data transmission link, and the control module does not actively interrupt the data transmission process, so that the two parties can query the respective lost data packet, and when the WIFI module is in the data transmission state, the lost data packet can be retransmitted, instead of transmitting only the newly generated data packet.
For a sending data packet sent to the slave equipment by the control module, after the slave equipment receives the data packet successfully, the control module returns a confirmation data packet to the control module, and after the confirmation data packet is obtained by the control module, the control module determines that the slave equipment receives the data packet successfully; the data packets sent from the slave device to the control module are received data packets of the control module, the control module requests a certain number of data packets from the slave device, and the control module can determine whether all the received data packets are successfully received by detecting the number of the received data packets. Optionally, in order to implement retransmission of a lost data packet, a sending identifier is written in a sending data packet of the control module, and after receiving the sending data packet of the control module, the slave device returns a confirmation identifier of the confirmation data packet, which is the same as the corresponding sending identifier; the received data packet of the control module is written into a transmission identifier by the slave device, and the transmission identifier is correspondingly associated with the data packet requested by the control module. Thus, the control module can determine whether there is a lost packet by detecting the acknowledgement flag and the transmission flag.
In order to realize retransmission of lost data packets, the control module further comprises an identification unit, a data packet detection unit and a data packet retransmission unit; the identification recognition unit is used for recognizing the confirmation identification of the confirmation data packet sent by the slave equipment and the transmission identification of the transmission data packet; the data packet detection unit is used for detecting the failed transmission data packet transmitted by the control module according to the confirmation identification; detecting that the control module receives the failed received data packet according to the transmission identifier; the data packet retransmission unit is used for retransmitting the transmission data packet which fails to be transmitted to the slave equipment when the WIFI module is in a signal transmission state; re-requesting the slave device to transmit the reception packet whose reception failed. As shown in fig. 3, further, the control module 1 further includes a first link interference detection unit 11 and a first link interference judgment unit 12;
the first link interference detection unit 11 is configured to detect a third noise intensity of the WIFI module 3 after determining that the slave device generates interference on the WIFI module 3; the third noise intensity is the noise intensity of the WIFI module 3 when the data transmission link is disconnected and the data reception link is connected;
the first link interference judging unit 12 is configured to judge whether the first noise strength is the same as the third noise strength;
the first link interference detection unit 11 is further configured to detect a fourth noise intensity of the WIFI module 3 after the first link interference judgment unit 12 determines that the first noise intensity is different from the third noise intensity; the fourth noise intensity is the noise intensity of the WIFI module when the data receiving link is disconnected and the data sending link is connected;
the first link interference judging unit 12 is further configured to judge whether the first noise strength is the same as the fourth noise strength.
Specifically, the first link interference detection unit detects a third noise intensity of the WIFI module, and if the first noise intensity is the same as the third noise intensity, the interference elimination is performed, the turned-on data receiving link does not generate interference on the WIFI module, the interference of the WIFI module is generated by the turned-off data transmitting link, and the link generating the interference on the WIFI module is the data transmitting link; if the first noise intensity is different from the third noise intensity, it is indicated that the conducted data receiving link interferes with the WIFI module, but whether the data sending link also interferes or not is not determined; further detecting fourth noise intensity of the WIFI module, and if the first noise intensity is the same as the fourth noise intensity, indicating that the connected data sending link does not generate interference on the WIFI module, the interference of the WIFI module is generated by the disconnected data receiving link, and the link generating interference on the WIFI module is a data receiving link; if the first noise intensity is different from the fourth noise intensity, it is indicated that both the data receiving link and the data sending link generate interference on the WIFI module. Thereby. The specific data transmission link which interferes with the WIFI module can be obtained through the first link interference detection unit and the first link interference judgment unit, and the subsequent link control can be further targeted.
Further, the control signal generating unit 8 is specifically configured to:
after the first link interference judgment unit 12 judges that the first noise strength is the same as the third noise strength and the WIFI module 3 is in a signal receiving state, a first switch control signal is generated; the first switch control signal is used for controlling the first switch unit to be switched off and controlling the second switch unit to be switched on;
after the first link interference judgment unit 12 judges that the first noise strength is the same as the fourth noise strength and the WIFI module 3 is in a signal receiving state, a second switch control signal is generated; the second switch control signal is used for controlling the first switch unit to be closed and controlling the second switch unit to be opened;
after the first link interference judgment unit 12 judges that the third noise strength and the fourth noise strength are both different from the first noise strength and the WIFI module 3 is in a signal receiving state, a third switch control signal is generated; wherein the third switch control signal is used for controlling the first switch unit and the second switch unit to be turned off.
Specifically, after a specific link which interferes with the WIFI module can be obtained through the first link interference detection unit and the first link interference judgment unit, the control module generates a corresponding control signal to adjust the transmission state of the data transmission link which interferes with the WIFI module, and the data transmission link which does not interfere with the WIFI module is kept in a conduction state. Specifically, if only the data transmission link generates interference, the control signal generation unit generates a first switch control signal to control the first switch unit to be switched off to avoid the communication of the WIFI module from being affected, and the second switch unit is switched on to enable data transmitted on the link to be completely received; if only the data receiving link generates interference, the control signal generating unit generates a second switch control signal to control the second switch unit to be switched off so as to prevent the communication of the WIFI module from being affected, and the first switch unit is switched on so as to enable the data transmitted on the link to be completely received; if the interference-generating device comprises a data receiving link and a data sending link, the control signal generating unit generates a third switch control signal, and the first switch unit and the second switch unit are controlled to be disconnected so as to avoid the influence on the communication of the WIFI module; therefore, the device for preventing the USB3.0 device from interfering with the WIFI module provided by the embodiment of the invention only disconnects the data transmission link which interferes with the WIFI module on the premise of ensuring that the communication process of the WIFI module is not affected, controls the data transmission link which does not interfere with the WIFI module to continue data transmission, and further fully utilizes the high data transmission rate provided by the USB3.0 technology.
Please refer to fig. 4, which is a block diagram illustrating a structure of an apparatus for preventing a USB3.0 device from interfering a WIFI module according to embodiment 4 of the present invention; further, the data sending link comprises a first data sending link and a second data sending link, and the data receiving link comprises a first data receiving link and a second data receiving link;
the first switching unit includes a first high frequency switch and a second high frequency switch; the first high-frequency switch controls the on-off state of the first data transmission link according to the control signal, and the second high-frequency switch controls the on-off state of the second data transmission link according to the control signal;
the second switching unit includes a third high frequency switch and a fourth high frequency switch; the third high-frequency switch controls the on-off state of the first data receiving link according to the control signal, and the fourth high-frequency switch controls the on-off state of the second data receiving link according to the control signal.
The high-frequency switch can control the on-off state of the data transmission link of the USB 3.0. Specifically, the data transmission link comprises a first data transmission link and a second data transmission link, and the on-off state of the data transmission link is controlled by a first high-frequency switch and a second high-frequency switch respectively; the data receiving link comprises a first data receiving link and a second data receiving link, and the on-off state of the data receiving link is controlled by a third high-frequency switch and a fourth high-frequency switch respectively.
It should be noted that, after the data transmission link that interferes with the WIFI module is detected, if the control module controls the link adjustment state module to only disconnect the data transmission link that interferes with the WIFI module, and controls the data transmission link that does not interfere with the WIFI module to continue data transmission, the control signals may specifically be the first switch control signal, the second switch control signal, and the third switch control signal.
Fig. 5 is a block diagram illustrating a structure of an apparatus for preventing a USB3.0 device from interfering a WIFI module according to embodiment 5 of the present invention; further, the data transmission link of the USB3.0 interface 4 includes a data transmission link and a data reception link; the link state adjustment module 2 specifically includes:
a first attenuation unit 13, configured to control an attenuation amount of the data transmission link according to the control signal;
and a second attenuation unit 14, configured to control an attenuation amount of the data receiving link according to the control signal.
Specifically, the link status adjusting module 2 adjusts the attenuation of the data transmission link to control the transmission status of the data transmission link, and as can be understood by those skilled in the art, when the attenuation of the data transmission link reaches a certain value, although the data is transmitted through the link, the signal is attenuated due to the attenuation on the link, so that the receiving side fails to receive the data. The link state adjusting module specifically includes a first attenuating unit and a second attenuating unit, which respectively control the attenuation amounts of the data transmitting link and the data receiving link.
It should be noted that, in the apparatus for preventing the USB3.0 device from interfering with the WIFI module provided in the embodiment of the present invention, whether data transmitted between the slave device and the control module can be received by the other party is controlled by controlling the attenuation of the data transmission link, data transmission between the slave device and the control module is always performed separately, only because the attenuation of the data transmission link is a preset attenuation, a signal is gradually weakened on the data transmission link, so that the two parties cannot receive data sent by the other party, and the control module does not actively interrupt the data transmission process, so that the two parties can query respective lost data packets, and when the WIFI module is in a data sending state, the lost data packets can be retransmitted instead of only transmitting newly generated data packets. In order to implement retransmission of the lost data packet by the control module, the process of controlling retransmission of the lost data packet by the control module may be the same as that when the link state adjustment module includes the first switch unit and the second switch unit, which is not described herein again.
As shown in fig. 5, further, the control module 1 further includes a second link interference detecting unit 15 and a second link interference judging unit 16;
the second link interference detection unit 15 is configured to detect a fifth noise intensity of the WIFI module 3 after determining that the slave device generates interference on the WIFI module 3; the fifth noise intensity is the noise intensity of the WIFI module when the data transmission link has a preset attenuation and the data receiving link does not have the preset attenuation;
the second link interference judging unit 16 is configured to judge whether the first noise strength is the same as the fifth noise strength;
the second link interference detection unit 15 is further configured to detect a sixth noise strength of the WIFI module 3 after the second link interference determination unit 16 determines that the first noise strength is different from the fifth noise strength; the sixth noise intensity is the noise intensity of the WIFI module when the data receiving link has a preset attenuation and the data transmitting link has no preset attenuation;
the second link interference judging unit 16 is further configured to judge whether the first noise strength is the same as the sixth noise strength.
When the attenuation amount is the preset attenuation amount, although the data slave device or the control module still transmits data to the other party, the signal of the data transmission link fails to receive the data from the data slave device or the control module due to the attenuation of the signal; when the data transmission link has no preset attenuation, the signal of the data transmission link can be completely received by the other side.
Specifically, the second link interference detection unit detects a third noise intensity of the WIFI module, and if the first noise intensity is the same as the fifth noise intensity, the interference elimination is performed, the turned-on data receiving link does not generate interference on the WIFI module, the interference of the WIFI module is generated by the turned-off data transmitting link, and the link generating the interference on the WIFI module is the data transmitting link; if the first noise intensity is different from the fifth noise intensity, it is indicated that the conducted data receiving link interferes with the WIFI module, but whether the data sending link also interferes or not is not determined; further detecting sixth noise intensity of the WIFI module, and if the first noise intensity is the same as the sixth noise intensity, indicating that the connected data sending link does not generate interference on the WIFI module, the interference of the WIFI module is generated by the disconnected data receiving link, and the link generating interference on the WIFI module is a data receiving link; if the first noise intensity is different from the sixth noise intensity, it is indicated that both the data receiving link and the data sending link generate interference on the WIFI module. Thereby. The specific data transmission link which interferes with the WIFI module can be obtained through the second link interference detection unit and the second link interference judgment unit, and the subsequent link control can be further targeted.
Further, the control signal generating unit 8 is specifically configured to:
after the second link interference judgment unit 16 judges that the first noise strength is the same as the fifth noise strength and the WIFI module 3 is in a signal receiving state, a first attenuation control signal is generated; the first attenuation control signal is used for controlling the attenuation of the first attenuation unit 13 to be a preset attenuation and controlling the second attenuation unit 14 not to have the preset attenuation;
after the second link interference determination unit 16 determines that the first noise strength is the same as the sixth noise strength and the WIFI module 3 is in a signal receiving state, a second attenuation control signal is generated; the second attenuation control signal is used for controlling the first attenuation unit 13 to have no preset attenuation and controlling the attenuation of the second attenuation unit 14 to be a preset attenuation;
after the second link interference determination unit 16 determines that the fifth noise strength and the sixth noise strength are both different from the first noise strength and the WIFI module is in a signal receiving state, a third attenuation control signal is generated; the third attenuation control signal is used for controlling the attenuation amounts of the first attenuation unit 13 and the second attenuation unit 14 to be preset attenuation amounts.
Specifically, after the specific data transmission link which generates interference to the WIFI module can be obtained through the second link interference detection unit and the second link interference judgment unit, the control module generates a corresponding control signal to adjust the transmission state of the data transmission link which generates interference, and the data transmission link which does not generate interference continues to maintain the transmission state of normal data transmission. Specifically, if only the data transmission link generates interference, the control signal generation unit generates a first attenuation control signal, controls the first attenuation unit to adjust the attenuation of the data transmission link to a preset attenuation to avoid the influence on the communication of the WIFI module, and controls the second attenuation unit to enable the data reception link to have no preset attenuation so that the data transmitted on the link is completely received; if only the data receiving link generates interference, the control signal generating unit generates a second attenuation control signal, controls the second attenuation unit to adjust the attenuation of the data receiving link to a preset attenuation to avoid the influence of the communication of the WIFI module, and controls the first attenuation unit to enable the data transmitting link not to have the preset attenuation so that the data transmitted on the link is completely received; if the interference-generating device comprises the data receiving link and the data sending link, the control signal generating unit generates a third attenuation control signal, and the attenuation amounts of the data sending link and the data receiving link are adjusted to be preset attenuation amounts by controlling the first attenuation unit and the second attenuation unit so as to avoid the influence on the communication of the WIFI module; therefore, the device for preventing the USB3.0 device from interfering with the WIFI module provided by the embodiment of the present invention only adjusts the attenuation of the data transmission link that interferes with the WIFI module to the preset attenuation on the premise of ensuring that the communication process of the WIFI module is not affected, and controls the data transmission link that does not interfere with the WIFI module to have no preset attenuation so as to continue to transmit the data of the link, thereby further fully utilizing the high data transmission rate provided by the USB3.0 technology.
Fig. 6 is a block diagram illustrating a structure of an apparatus for preventing a USB3.0 device from interfering a WIFI module according to embodiment 6 of the present invention; further, the data sending link comprises a first data sending link and a second data sending link, and the data receiving link comprises a first data receiving link and a second data receiving link;
the first attenuation unit 13 includes a first variable attenuator and a second variable attenuator; the first variable attenuator controls the attenuation amount of the first data transmission link according to the control signal, and the second variable attenuator controls the attenuation amount of the second data transmission link according to the control signal;
the second attenuation units 14 each include a third variable attenuator and a fourth variable attenuator; the third variable attenuator controls the attenuation of the first data receiving link according to the control signal, and the fourth variable attenuator controls the attenuation of the second data receiving link according to the control signal.
The variable attenuator can adjust the attenuation of the data transmission link of the USB 3.0. Specifically, the data transmission link includes a first data transmission link and a second data transmission link, and the attenuation amounts are controlled by a first variable attenuator and a second variable attenuator respectively; the data receiving chain comprises a first data receiving chain and a second data receiving chain, and the attenuation amount is controlled by a third variable attenuator and a fourth variable attenuator respectively.
It should be noted that, after the data transmission link that interferes with the WIFI module is detected, if the control module controls the link adjustment state module to only control the data transmitted on the data transmission link that interferes with the WIFI module not to be received by the other party, and controls the data transmitted on the data transmission link that does not interfere with the WIFI module to be received by the other party, the control signal may specifically be the first attenuation control signal, the second attenuation control signal, and the third attenuation control signal.
Optionally, the control module controls the attenuation amounts of the first variable attenuator, the second variable attenuator, the third variable attenuator and the fourth variable attenuator to be adjusted according to the interference degree of the data transmission link with the WIFI module, that is, the preset attenuation amounts of different variable attenuators may be adjusted according to the transmission condition of a specific link, and it is not necessary that all the preset attenuation amounts of all the variable attenuators are the same, so that on the premise of avoiding the slave device from interfering with the WIFI module, as few data packets as possible are lost.
In specific implementation, in the device for preventing the USB3.0 device from interfering the WIFI module provided by the embodiment of the present invention, the control module is used for connecting with the WIFI module; the control module is used for carrying out interference detection on the slave equipment before identifying and initializing the slave equipment accessed to the USB3.0 interface; the control module is further used for generating a corresponding control signal after the slave device is judged to generate interference on the WIFI module and the WIFI module is in a signal receiving state; the link state adjusting module is used for being connected between the USB3.0 interface and the control module; and the link state adjusting module is used for controlling the transmission state of the data transmission link of the USB3.0 interface according to the control signal generated by the control module.
The device for preventing the USB3.0 equipment from interfering the WIFI module provided by the embodiment of the invention can generate the control signal through the control module, control the link state adjusting module to adjust the transmission state of the data transmission link, effectively avoid the interference of the USB3.0 data transmission on the communication of the WIFI module, and fully utilize the high data transmission rate provided by the USB3.0 technology.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or 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 solution of the embodiment of the present invention. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. A device for preventing USB3.0 equipment from interfering a WIFI module is characterized by comprising a control module and a link state adjusting module; wherein the content of the first and second substances,
the control module is used for being connected with the WIFI module; the control module is used for carrying out interference detection on the slave equipment before identifying and initializing the slave equipment accessed to the USB3.0 interface; the control module is further used for generating a corresponding control signal after the slave device is judged to generate interference on the WIFI module and the WIFI module is in a signal receiving state;
the control module specifically comprises:
the interference detection unit is used for detecting a first noise intensity of the WIFI module before the slave device accessing the USB3.0 interface is identified and initialized; after the slave device completes identification and initialization, detecting a second noise intensity of the WIFI module;
the interference judging unit is used for judging whether the slave equipment generates interference on the WIFI module according to the first noise intensity and the second noise intensity;
the WIFI state judging unit is used for judging whether the WIFI module is in a signal receiving state or not;
the control signal generation unit is used for generating the control signal after judging that the slave device generates interference on the WIFI module and the WIFI module is in a signal receiving state;
the link state adjusting module is used for being connected between the USB3.0 interface and the control module; the link state adjusting module is used for controlling the transmission state of the data transmission link of the USB3.0 interface according to the control signal generated by the control module.
2. The apparatus for preventing interference of a USB3.0 device with a WIFI module of claim 1, wherein the data transmission link of the USB3.0 interface comprises a data transmission link and a data reception link; the link state adjustment module specifically includes:
the first switch unit is used for controlling the on-off state of the data transmission link according to the control signal;
and the second switch unit is used for controlling the on-off state of the data receiving link according to the control signal.
3. The apparatus of claim 2, wherein the control module further comprises a first link interference detection unit and a first link interference determination unit;
the first link interference detection unit is used for detecting a third noise intensity of the WIFI module after judging that the slave device generates interference on the WIFI module; the third noise intensity is the noise intensity of the WIFI module when the data sending link is disconnected and the data receiving link is connected;
the first link interference judging unit is configured to judge whether the first noise strength is the same as the third noise strength;
the first link interference detection unit is further configured to detect a fourth noise intensity of the WIFI module after the first link interference judgment unit determines that the first noise intensity is different from the third noise intensity; the fourth noise intensity is the noise intensity of the WIFI module when the data receiving link is disconnected and the data sending link is connected;
the first link interference judging unit is further configured to judge whether the first noise strength is the same as the fourth noise strength.
4. The apparatus of claim 3, wherein the control signal generation unit is specifically configured to:
after the first link interference judgment unit judges that the first noise intensity is the same as the third noise intensity and the WIFI module is in a signal receiving state, generating a first switch control signal; the first switch control signal is used for controlling the first switch unit to be switched off and controlling the second switch unit to be switched on;
after the first link interference judgment unit judges that the first noise intensity is the same as the fourth noise intensity and the WIFI module is in a signal receiving state, generating a second switch control signal; the second switch control signal is used for controlling the first switch unit to be closed and controlling the second switch unit to be opened;
after the first link interference judgment unit judges that the third noise intensity and the fourth noise intensity are both different from the first noise intensity and the WIFI module is in a signal receiving state, generating a third switch control signal; wherein the third switch control signal is used for controlling the first switch unit and the second switch unit to be turned off.
5. The apparatus of any of claims 2 to 4, wherein the data transmission link comprises a first data transmission link and a second data transmission link, and the data reception link comprises a first data reception link and a second data reception link;
the first switching unit includes a first high frequency switch and a second high frequency switch; the first high-frequency switch controls the on-off state of the first data transmission link according to the control signal, and the second high-frequency switch controls the on-off state of the second data transmission link according to the control signal;
the second switching unit includes a third high frequency switch and a fourth high frequency switch; the third high-frequency switch controls the on-off state of the first data receiving link according to the control signal, and the fourth high-frequency switch controls the on-off state of the second data receiving link according to the control signal.
6. The apparatus for preventing interference of a USB3.0 device with a WIFI module of claim 1, wherein the data transmission link of the USB3.0 interface comprises a data transmission link and a data reception link; the link state adjustment module specifically includes:
a first attenuation unit for controlling the attenuation of the data transmission link according to the control signal;
and the second attenuation unit is used for controlling the attenuation of the data receiving link according to the control signal.
7. The apparatus of claim 6, wherein the control module further comprises a second link interference detection unit and a second link interference determination unit;
the second link interference detection unit is used for detecting a fifth noise intensity of the WIFI module after judging that the slave device generates interference on the WIFI module; the fifth noise intensity is the noise intensity of the WIFI module when the data transmission link has a preset attenuation and the data receiving link does not have the preset attenuation;
the second link interference judging unit is configured to judge whether the first noise strength is the same as the fifth noise strength;
the second link interference detection unit is further configured to detect a sixth noise intensity of the WIFI module after the second link interference judgment unit determines that the first noise intensity is different from the fifth noise intensity; the sixth noise intensity is the noise intensity of the WIFI module when the data receiving link has a preset attenuation and the data transmitting link has no preset attenuation;
the second link interference judging unit is further configured to judge whether the first noise strength is the same as the sixth noise strength.
8. The apparatus of claim 7, wherein the control signal generation unit is specifically configured to:
after the second link interference judgment unit judges that the first noise intensity is the same as the fifth noise intensity and the WIFI module is in a signal receiving state, generating a first attenuation control signal; the first attenuation control signal is used for controlling the attenuation of the first attenuation unit to be a preset attenuation and controlling the second attenuation unit to have no preset attenuation;
after the second link interference judgment unit judges that the first noise intensity is the same as the sixth noise intensity and the WIFI module is in a signal receiving state, generating a second attenuation control signal; the second attenuation control signal is used for controlling the first attenuation unit to have no preset attenuation and controlling the attenuation of the second attenuation unit to be a preset attenuation;
after the second link interference judgment unit judges that the fifth noise intensity and the sixth noise intensity are both different from the first noise intensity and the WIFI module is in a signal receiving state, generating a third attenuation control signal; the third attenuation control signal is used for controlling the attenuation amounts of the first attenuation unit and the second attenuation unit to be preset attenuation amounts.
9. The apparatus of any of claims 6 to 8, wherein the data transmission link comprises a first data transmission link and a second data transmission link, and the data reception link comprises a first data reception link and a second data reception link;
the first attenuation unit comprises a first variable attenuator and a second variable attenuator; the first variable attenuator controls the attenuation amount of the first data transmission link according to the control signal, and the second variable attenuator controls the attenuation amount of the second data transmission link according to the control signal;
the second attenuation units respectively comprise a third variable attenuator and a fourth variable attenuator; the third variable attenuator controls the attenuation of the first data receiving link according to the control signal, and the fourth variable attenuator controls the attenuation of the second data receiving link according to the control signal.
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Address after: 5 / F, fulizhen building, No.1, Kefa Road, high tech park, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Lianzhou International Technology Co.,Ltd. Address before: 5 / F, fulizhen building, No.1, Kefa Road, high tech park, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN PUWEI TECHNOLOGY CO.,LTD. |