CN109362130B

CN109362130B - MIFI equipment system and method

Info

Publication number: CN109362130B
Application number: CN201811216842.5A
Authority: CN
Inventors: 刘磊
Original assignee: Shenzhen Mashi Innovation Technology Co ltd
Current assignee: Shenzhen Mashi Innovation Technology Co ltd
Priority date: 2018-10-18
Filing date: 2018-10-18
Publication date: 2023-04-28
Anticipated expiration: 2038-10-18
Also published as: CN109362130A

Abstract

The invention discloses a MIFI equipment system and a MIFI equipment method, wherein the MIFI equipment system comprises: the antenna comprises a first module, a second module, a transmission module, a SIM card and an antenna, wherein the second module is also connected with the transmission module, and the transmission module is connected with the first module; the two SIM cards are a first SIM card and a second SIM card, the first module is provided with a first card seat matched with the first SIM card, the first SIM card is inserted into the first card seat, and the second module is provided with a second card seat correspondingly matched with the second SIM card; the antenna is provided with two groups, and each group of the antenna is respectively connected with the first module and the second module; the beneficial effects are that: the problem that MiFi in the prior art is limited by the network condition of an operator to which a SIM card installed in the MiFi belongs is solved.

Description

MIFI equipment system and method

Technical Field

The invention relates to the technical field of mobile terminals, in particular to an MIFI equipment system and method.

Background

Many handheld devices such as Mobile Phone, MIFI device (Mobile wifi), mobile network device (MID) and the like now need to insert an independent SIM card to access to the wireless network of the operator, and when the user carries these devices out of home or enters a network coverage blind area of a Mobile operator, that is, when the user of the a operator cannot use the network of the B operator in a place where the coverage of the a operator is weak and the coverage of the B operator is strong, the user has two options, either to replace the SIM card of the other operator or to use roaming communication. However, purchase and replacement of the SIM card bring a lot of inconvenience to the user's communication, so that the limitations of network signals and disadvantages of traffic tariffs of the conventional card MIFI are gradually revealed.

Disclosure of Invention

The invention mainly aims to provide a MIFI equipment system and a MIFI equipment method, which solve the problem that MiFi is limited by the network condition of an operator to which a SIM card is installed in the MIFI equipment system.

The invention provides an MIFI equipment system, which comprises a first module, a second module, a transmission module, a SIM card and an antenna, wherein the second module is also connected with the transmission module, and the transmission module is connected with the first module; the two SIM cards are a first SIM card and a second SIM card, the first module is provided with a first card seat matched with the first SIM card, the first SIM card is inserted into the first card seat, the second module is provided with a second card seat correspondingly matched with the second SIM card, and the second SIM card is inserted into the second card seat; the antennas are provided with two groups, each group of antennas is respectively connected with a first module and a second module, the first module is used for searching an optimal network through a first SIM card and sharing the flow of the first SIM card to the second module, the second module is communicated with the background through a second SIM card, and the second module is used for converting the flow of the first SIM card into a WIFI signal for sharing, or converting the flow of the background card corresponding to the optimal network in the background into the WIFI signal for sharing.

Further, the system further comprises a power-on switch module, the second module is further connected with the power-on switch module, the power-on switch module is connected with the first module, the first module is a system module made of the chip ASR1802, and the second module is a system module made of the chip MT 6737.

Further, the transmission module comprises a USB module and a switch double-circuit module, the USB module is a USB seat, and the switch double-circuit module is a system module made of a BCT4227 chip; the 4 pin of the switch double-circuit module is connected with the 4 pin of the USB module, and the 5 pin of the switch double-circuit module is connected with the 3 pin of the USB module; the 2 feet of the switch double-circuit module are connected with the 11 feet of the second module, the 1 foot of the switch double-circuit module is connected with the 12 feet of the second module, the 6 feet of the switch double-circuit module are connected with the 60 feet of the first module, and the 7 feet of the switch double-circuit module are connected with the 59 feet of the first module.

Further, the 1 pin of the USB module is grounded, and the 5 pin of the USB module is connected with the 14 pin and the 15 pin of the second module at the same time.

Further, the power-on switch module comprises a power supply, a triode and an MOS tube, wherein the positive electrode of the power supply is connected with

pins

32, 33 and 34 of the second module, the negative electrode of the power supply is connected with the grounding pin of the second module; the D electrode of the MOS tube is connected with the positive electrode of the power supply, and the S electrode of the MOS tube is connected with the pin 43 and the pin 44 of the first module; the C pole of triode is connected with the G pole of MOS pipe, and the B pole of triode is connected with 48 feet of second module, and the E pole of triode is grounded.

Further, pin 2 of the first module is connected to pin 47 of the second module, pin 3 of the first module is connected to pin 46 of the second module, and pin 18 of the second module is connected to pin 55 of the first module.

Further, a power-on key is also included, and the power-on key is connected with pin 39 of the second module.

Further, the 31 feet of the second module are battery detection feet, the battery detection feet are connected with one end of the thermistor, and the other end of the thermistor is grounded.

Further, each group of antennas includes a main antenna and a diversity antenna, wherein one group of main antennas is connected with the 32 pin of the first module and the diversity antenna is connected with the 28 pin of the first module, and the other group of main antennas is connected with the 50 pin of the second module and the diversity antenna is respectively connected with the 57 pin of the second module.

The invention also provides a method for realizing 4G surfing by using the MIFI equipment system, which is characterized by comprising the following steps of:

the first module quickly searches an optimal network through the first SIM card, and transmits the flow of the first SIM card to the second module through the transmission module, and converts the flow into a WIFI signal for sharing;

the second module communicates with the background through a second SIM card and acquires information of the background card matched with the optimal network;

the second module simulates the information of the background card to generate a virtual background card through an internal VSIM technology, and consumes the flow of the background card through data transmission with the virtual background card to generate a WIFI signal for sharing;

and the second module disconnects the transmission module between the second module and the first module to share the network link and independently shares the WIFI hotspot of the third SIM card.

The key points of the MIFI equipment system and method design of the invention are as follows: the MIFI equipment system is used for inserting the SIM card, communicating with a background card pool according to the environment network condition, selecting an optimal network operator, starting up quickly, preferentially realizing WIFI hot spot sharing by using a local card, improving user experience, and after the background card is acquired, seamlessly switching network links, thereby solving the problem that the MIFi equipment in the prior art is limited by the network condition of the operator to which the SIM card installed in the MIFi equipment belongs.

Drawings

FIG. 1 is a schematic block diagram of a MIFI device system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a power-on switch module circuit of a MIFI device system according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a first modular circuit configuration of a MIFI device system according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a second modular circuit configuration of a MIFI device system according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a USB module circuit of a MIFI device system according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a mode switch two-way module circuit structure of an MIFI equipment system according to an embodiment of the present invention.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in the embodiments of the present invention, all directional indicators (such as up, down, left, right, front, and rear … …) are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), if the specific posture is changed, the directional indicators correspondingly change, and the connection may be a direct connection or an indirect connection.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

Referring to fig. 1, 3 and 4, the antenna comprises a first module 1, a second module 2, a transmission module, a SIM card and an antenna 13, wherein the second module 2 is connected with the first module 1, the second module 2 is also connected with the transmission module, and the transmission module is connected with the first module 1; the two SIM cards are a first SIM card 8 and a second SIM card 9, the first module 1 is provided with a first card seat 11 matched with the first SIM card 8, the first SIM card 8 is inserted into the first card seat 11, the second module 2 is correspondingly matched with a second card seat 21 of the second SIM card 9, and the second SIM card 9 is inserted into the second card seat 21; the antennas 13 are provided with two groups, each group of antennas 13 is respectively connected with the first module 1 and the second module 2, the first module 1 is used for searching an optimal network through the first SIM card 8 and sharing the flow of the first SIM card 1 to the second module 2, the second module 2 is communicated with the background through the second SIM card 9, and the second module is used for converting the flow of the first SIM card 1 into a WIFI signal for sharing, or converting the flow of the background card corresponding to the optimal network in the background into the WIFI signal for sharing.

In this embodiment, the SIM card is a 4G-SIM card, each card holder of the first module 1 and the second module 2 is provided with a reset end, a clock end, a DATA input and output end and a power input end corresponding to the SIM card,

pins

18, 19, 20 and 21 in the first card holder 11 of the first module 1 respectively correspond to the power input end, the reset end, the DATA input and output end and the clock end of the first SIM card 8,

pins

116, 117, 121 and 122 in the second card holder 21 of the second module 2 respectively correspond to the reset end, the DATA input and output end, the clock end and the power input end of the

second SIM card

9, 118, 119, 120 and 123 in the third card holder 22 of the second module 2 respectively correspond to the reset end, the DATA input and output end, the clock end and the power input end of the third SIM card 10, a plurality of card slots are provided in the background, the SIM cards capable of being moved by controlling and reading the identity codes of the SIM card with a single chip microcomputer, the SIM card has an identification code, the identification code firstly has a plurality of pins, VCC (power supply), DATA (DATA), CLK (clock), RST (reset), GND, the power supply is powered after the SIM card is inserted, during the starting process, the system starts to find the network, a RST signal is sent to the SIM card firstly, the SIM card receives the signal, the identification code is sent to the system through a DATA line, the system starts to find the network with the base station after receiving the identification code, the network can be accessed, which is the working principle of the background card, after receiving the RST signal, the background sends the identification information of the SIM card to MIFI equipment, the MIFI equipment knows the identification information and takes the DATA of the virtual background card, the working effect is the same as the flow of normal card insertion, the flow of the virtual background card shared by the second module 2 is the flow of the background card, in this embodiment, the second module 2 and the first module 1 can perform data state interaction, and the communication module 2 can also be used for receiving a communication signal sent by the first module 1 through the transmission module; the first SIM card 8 is an entity card and is used for sharing traffic to the second module 2 in advance after being started, the second SIM card 9 is an entity card and is used for communicating with the background, obtaining information of the optimal network background card, the second module 2 obtains the information of the background card and internally simulates to generate a virtual background card, and the virtual background card is used for sharing traffic generated WIFI signals of consuming the virtual background card, namely, the traffic generated WIFI signals of consuming the background card are shared. After the MIFI equipment system is started, a first module 1 in the MIFI equipment system can work in advance due to the starting, an optimal network operator is selected at any time according to the environment network condition through an antenna 13 and a first SIM card 8, and the flow of the inserted first SIM card 8 is transmitted to a second module 2 through a transmission module to be used as a WIFI hotspot for sharing; the second SIM card 9 in the second card holder 21 in the second module 2 communicates with the background after being started, and the background extracts what kind of card is needed, so that a user may take the device to various places in the country, the background issues the local SIM card according to attribution, then the second SIM card 9 receives the local SIM card information, that is, the second SIM card 9 acquires the background card information, through the VSIM technology in the MIFI device system, a virtual background card is simulated and generated, the flow of the virtual background card can generate WIFI signals for sharing, WIFI is a signal output after the radio frequency circuit in the second module 2 amplifies and filters, the signal is output from the 100 feet of the second module 2, and is used for converting the 4G signal of an operator into the WIFI signal for sharing for the user to access the internet, so that the problem that the MIFI device system in the prior art can be limited by the network condition of the operator to which the SIM card installed in the background is located is solved, the flow operation cost is reduced, in other embodiments, the SIM card can also be a 2G-card, the first SIM 1 can be a small SIM module 2G module 2 and the second module 2G module 2 can be used.

In the above MiFi device, the power-on switch module 10 is further included, the second module 2 is further connected to the power-on switch module 10, the power-on switch module 10 is connected to the first module 1, the first module 1 is a system module made by the chip ASR1802, and the second module 2 is a system module made by the chip MT 6737.

In this embodiment, the first module 1 is a small system 4G module made by the chip ASR1802, the second module 2 is a 4G module of an android system made by the chip MT6737, after the MiFi equipment system is started, the first module 1 is powered on automatically, the first module 1 will work in advance, an optimal network operator is selected according to the environment network condition through the first SIM card 8, after the communication module 2 works, the second SIM card 9 communicates with the background, after receiving the information of the issued SIM card, the simulation generates a virtual background card, and then the second module 2 shares the flow of the background card, at this time, the communication module 2 can control the first module 1 to be powered off through the power-on switch, so that the first module 1 is in a standby mode, and the system power consumption can be saved.

Referring to fig. 1, 5 and 6, the transmission module 14 includes a USB module 4 and a switch two-way module 3, the USB module 4 is a USB socket, and the switch two-way module 3 is a system module made of a BCT4227 chip; the 4 pin of the switch double-circuit module 3 is connected with the 4 pin of the USB module 4, and the 5 pin of the switch double-circuit module 3 is connected with the 3 pin of the USB module 4; the 2 feet of switch double-circuit module 3 connect the 11 feet of second module 2, the 1 foot of switch double-circuit module 3 connects the 12 feet of second module 2, the 6 feet of switch double-circuit module 3 connect the 60 feet of first module 1, the 7 feet of switch double-circuit module 3 connect the 59 feet of first module 1.

In an embodiment of the present invention, the switch two-way module 3 is a BCT4227 chip as a USB switch, the 1,2 pins of the switch two-way module 3 are d+/-, and are public pins, and are connected to the USB input pin of the second module 2, namely, the 12, 11 pins, the 1 pin of the switch two-way module 3 is connected to the 11 pin of the module 2, the 2 pin of the switch two-way module 3 is connected to the 13 pin of the module 2, the 4,5 pins of the switch two-way module 3 are d1+/-, and are connected to an external USB port, namely, the 4 pin of the switch two-way module 3 is connected to the 4 pin of the USB module 4, and the 3d+ pin (5 pin) of the switch two-way module is connected to the USB-DP pin (3 pin); the 6,7 feet of the switch double-circuit module 3 are the USB feet of D2 +/-and are connected to the USB output feet of the first module 1, namely, the 6 feet of the switch double-circuit module 3 are connected with the 60 feet of the first module 1, the 7 feet of the switch double-circuit module 3 are connected with the 59 feet of the first module 1, the 10 feet of the switch double-circuit module 3 are the SEL feet, the control feet are the feet, when the feet are in a 0 or high-resistance state, D +/-and D1 +/-are conducted, at the moment, the USB external port and the second module 2 are conducted and used for downloading the second module 2, when the system is started up, the SEL feet are pulled to be high to be 1, at the moment, the D +/-and the D2 +/-are conducted, and the first module 1 and the communication block 2 can be communicated and used for network sharing.

In an embodiment of the present invention, the second module 2 is an android system, and during the debugging process or after-sales of products, software may need to be updated, and then the software needs to be downloaded into the second module 2, and the downloaded software is the USB module 4, so that a USB path needs to be provided into the second module 2, and since the first module 1 and the second module 2 need to share the network with the USB path to use as a network card, if the path is provided alone, the port is occupied, the debugging use cannot be downloaded, and therefore the switch two-way module 3 can be used.

Referring to fig. 4 and 5, pin 1 of the USB module 4 is grounded, and pin 5 of the USB module 4 is connected to both pins 14 and 15 of the second module 2.

In an embodiment of the present invention, the USB module 4 can be regarded as a UBS socket, which is equivalent to a USB charging socket on a mobile phone, and is used for downloading equipment or transmitting data by an external computer, the VBUS of pin 5 of the USB module 4 is a charging voltage, and is connected to pins 14 and 15 of the second module 2, and is used for charging a system and triggering USB downloading, and VBUS is a voltage of 5V, because any power source needs a reference ground, i.e. pin 1 of the USB module 4 needs to be grounded, and thus the power source is the same reference plane.

Referring to fig. 1, 3, 4,5 and 6, the power-on switch module 10 includes a power supply 5, a triode 7 and a MOS tube 6, wherein an anode of the power supply 5 is connected with

pins

32, 33 and 34 of the second module 2, a cathode of the power supply 5 is connected with a ground pin of the second module 2; the D electrode of the MOS tube 6 is connected with the positive electrode of the power supply 5, and the S electrode of the MOS tube 6 is connected with the pin 43 and the pin 44 of the first module 1; the C pole of the triode 7 is connected with the G pole of the MOS tube 6, the B pole of the triode 7 is connected with the 48 pin of the second module 2, and the E pole of the triode 7 is grounded.

Referring to fig. 2, in an embodiment of the present invention, the power supply 5 is a battery, VBAT is a battery voltage, the battery voltage is 4.2V, the negative electrode of the power supply 5 is connected to all grounding pins of the second module 2, the working voltage of the first module 1 is 3.6-4.2V, the grounding pins of the second module 2 include

pins

7, 10, 13, 27, 30, 35, 36, 99 and 126, the condition of conduction of the MOS transistor 6 is that the G level is a low voltage, the voltage is less than 0.3V, the C level of the transistor 7 is required to be conducted to the ground, the condition of conduction of the transistor 7 is that the B level is a high level, preferably 1.8V, when the B level of the transistor 7 is a high level, the C and E are conducted, the C level is seen to be grounded approximately, the C level is 0, the G level of the MOS transistor 6 is also zero, the G level is a low voltage, so the MOS transistor 6 is conducted, the first module 1 has a normal working voltage, and is in a working state, when the B level of the triode 7 is 0, the C and E are not conducted, the G is seen to be connected with a weak pull-up battery voltage, the voltage at the G is high level at the moment, the MOS tube 6 is not conducted, the first module 1 is naturally not provided with voltage, after the second module 2 takes the information of the background card and simulates the third SIM card 10, the purpose of closing the first module 1 can be achieved, the second module is in a standby state, the system power consumption can be saved, in the circuit diagram, the VIO18-PMU is a system power supply, 1.8V output voltage, 4G-VCC-EN is an enabling pin for supplying power to the first module 1, the high-low level state of the pin can control the existence of the power supply of the first module 1, the effect of opening and closing the first module 1 is achieved, the VIO18-PMU is connected with a pull-up resistor of 10KΩ for the enabling pin, when the control line is high level, the voltage is more stable, so that the control triode is also more stable, the first module 1 is not suddenly cut off, and the MIFI equipment system breakdown is not caused.

In another embodiment of the present invention, when the signal of the third SIM card 10 of the second module 2 is lost or the SIM card needs to be switched (address is changed, for example, cross-province and cross-city), the first module 1 may be woken up (fast, second level) by the second module 2 from the standby mode, and the USB module 4 between the first module 1 and the second module 2 may be opened again to share the network link until the second module 2 takes a new background card, and then the network link is disconnected again to enter the sleep mode, so that the working time of the first module 1 may be reduced, the system usage power consumption may be reduced, and if the first module 1 works all the time, the system power consumption may be too large, the battery usage time may be shortened, and meanwhile, the user experience may be seriously affected.

In an embodiment of the present invention, referring to fig. 2, four capacitors are further connected between the battery VBAT and the circuit connected to the D pole of the MOS transistor 6, and because this is the system power supply of the first module 1, the voltage and the current are inevitably dithered, and there are external interference, performance fluctuation of internal devices, and the like, the internal power supply can be in a fluctuating state, and the capacitor acts as voltage stabilizing and filtering here, so that the voltage stabilizing power supply is more stable and is in a required voltage.

Referring to fig. 3 and 4, pin 2 of the first module 1 is connected to pin 47 of the second module 2, pin 3 of the first module 1 is connected to pin 46 of the second module 2, and pin 18 of the second module 2 is connected to pin 55 of the first module 1.

In an embodiment of the present invention, pin 2 of the first module 1 is connected to pin 47 of the second module 2 to be a TX line of the MIFI device system, pin 3 of the first module 1 is connected to pin 46 of the second module 2 to be a RX line of the device, TX and RX are serial lines of the MIFI device system, for interaction of some data states of the first module 1 and the second module 2 at both ends, such as signal strength of each module, some user behavior control, pin 18 of the first module 1 is connected to pin 55 of the first module 1 to be a RESET line, the second module 2 can control the first module 1 to RESET, and it is possible that the first module 1 will crash, in this case, the second module 2 is required to control its RESET, in an embodiment of the present invention, pin 18 of the second module 2 is connected to stage B of the triode 7, stage C of the triode 7 is connected to pin 55 of the first module 1, and when stage B of the triode 7 is high level, C and E are turned on, current flows from pin 18 of the second module 2 to the first module 1 through stage C of the triode 2, and then the second module 2 is controlled to RESET by stage C of the first module 1.

Referring to fig. 1, the power-on key 12 is further included, and the power-on key 12 is connected to pin 39 of the second module 2.

In an embodiment of the present invention, the second module 2 has a pin 39, namely a power key pin, and the MIFI device system can be powered on by pressing the power-on key 4S for a long time.

Referring to fig. 1 and 4, pin 31 of the second module 2 is a battery detection pin, and the battery detection pin is connected to one end of a thermistor, and the other end of the thermistor is grounded.

In an embodiment of the present invention, the battery detecting pin is 31 pins of the second module 2, and is externally connected with a 10K NTC resistor, and the other end of the NTC resistor is grounded, where the NTC resistor of 10K is a thermistor, and the resistance of the thermistor is different at different temperatures, for example, at normal temperature of 25 degrees celsius, the resistance of the thermistor is 10K, then the detecting pin calculates the resistance of the thermistor by voltage, and knows that the temperature is 25 degrees celsius, for example, when reaching low temperature-20 degrees celsius, the resistance of the detecting pin becomes 5K, and when reaching high temperature of 60 degrees celsius, the resistor is 20K, the system can know the external temperature, and then the chip of the second module 2 works abnormally, and then prompts the user to shut down at low temperature, when at high temperature, the system knows 60 degrees celsius, the system shuts down the charging (the charging will generate heat) and shuts down some processes running at high temperature, the battery will cause the heating bulge, and serious explosion will cause safety hazards.

Referring to fig. 1, 3 and 4, each set of antennas 13 includes a main antenna 131 and a diversity antenna 132, wherein one set of the main antenna 131 is connected to the 32 pin of the first module 1 and the diversity antenna 132 is connected to the 28 pin of the first module 1, and the other set of the main antenna 131 is connected to the 50 pin of the second module 2 and the diversity antenna 132 is connected to the 57 pin of the second module 2, respectively.

In an embodiment of the present invention, the main antenna 131 of the first module 1 is used for communicating with operators, detecting the environmental network condition, selecting the operator with the optimal network condition, the main antenna 131 of the second module 2 is used for communicating with the background, obtaining the local SIM card information from the background and simulating the local SIM card information to the third SIM card 10 of the module 2, receiving and transmitting the signals from the radio frequency of the first module 1 and the second module 2 after power amplification, the main antenna 131 can transmit and receive the signals, and the diversity antenna 132 is used for enhancing the receiving capability of the main antenna 131.

the first module 1 rapidly searches an optimal network through the first SIM card 8, and transmits the flow of the first SIM card 8 to the second module 2 through the transmission module, and converts the flow into a WIFI signal for sharing;

the second module 2 communicates with the background through a second SIM card 9 and acquires information of the background card matched with the optimal network;

the second module 2 simulates the information of the background card to generate a virtual background card through an internal VSIM technology, and consumes the flow of the background card through data transmission with the virtual background card, so as to generate a WIFI signal for sharing;

the second module 2 disconnects the transmission module sharing network link with the first module 1 and individually shares the WIFI hotspot of the virtual back-office card.

In an embodiment of the present invention, as soon as the MIFI equipment system is started, the first module 1 is fast in startup, fast in network searching and low in power consumption, so that the first module 1 can firstly transmit the module to the second module 2 to serve as equipment to share the WIFI hotspot, at this time, the SIM2 of the second module 2 can communicate with the background, the SIM card is lifted to the background to be required to be taken, and after the background SIM card is taken, at this time, the sharing network link between the first module 1 and the second module 2 and the switch two-way module 3 and the USB module 4 can be disconnected, and the WIFI hotspot can be shared from the second module 2 alone. When the second module 2 simulates that the generated virtual background card signal is lost or the virtual background card needs to be switched (address is changed, such as cross-province and cross-city), the first module 1 wakes up (faster, in seconds) from the standby mode, and opens the USB sharing network link with the second module 2 again until the second module 2 takes a new background card, and disconnects the network link again to enter the sleep mode.

According to the MIFI equipment system, the SIM card is inserted, the optimal network operator is selected according to the environment network condition, WIFI hot spot sharing is achieved, user experience is improved, the problem that MiFi is limited by the network condition of the operator to which the SIM card installed in the MIFI equipment system belongs in the prior art is solved, a network link can be seamlessly switched between a first module and a second module through a power-on switch module and a transmission switch module, the working time of the first module is shortened, system power consumption is reduced, and user experience is further improved.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.

Claims

1. The MIFI equipment system is characterized by comprising a first module, a second module, a transmission module, a SIM card and an antenna, wherein the second module is connected with the first module, the second module is also connected with the transmission module, and the transmission module is connected with the first module; the two SIM cards are a first SIM card and a second SIM card, the first module is provided with a first card seat matched with the first SIM card, the first SIM card is inserted into the first card seat, the second module is provided with a second card seat correspondingly matched with the second SIM card, and the second SIM card is inserted into the second card seat; the antenna is provided with two groups, each group of antenna is respectively connected with the first module and the second module, the second module and the first module can carry out data state interaction, the first module is used for searching an optimal network through the first SIM card and sharing the flow of the first SIM card for the second module, the second module is used for obtaining optimal network information through communication between the second SIM card and a background, the second SIM card is used for generating a virtual background card through simulation of an internal VSIM technology of the MIFI equipment system, and the second module is used for converting the flow of the first SIM card into a WIFI signal for sharing or converting the flow of the background card corresponding to the optimal network in the background into the WIFI signal for sharing.

2. The MIFI equipment system of claim 1, further comprising a power-on switch module, wherein the second module is further coupled to the power-on switch module, wherein the power-on switch module is coupled to the first module, wherein the first module is a system module made by the chip ASR1802, and wherein the second module is a system module made by the chip MT 6737.

3. The MIFI equipment system of claim 2, wherein the transmission module comprises a USB module and a switch two-way module, the USB module being a USB socket, the switch two-way module being a system module made of a BCT4227 chip;

the 4 pins of the switch two-way module are connected with the 4 pins of the USB module, and the 5 pins of the switch two-way module are connected with the 3 pins of the USB module;

the 2 pins of the switch double-circuit module are connected with the 11 pins of the second module, and the 1 pin of the switch double-circuit module is connected with the 12 pins of the second module;

and the 6 pin of the switch double-circuit module is connected with the 60 pin of the first module, and the 7 pin of the switch double-circuit module is connected with the 59 pin of the first module.

4. The MIFI device system of claim 3, wherein pin 1 of the USB module is grounded and pin 5 of the USB module is connected to both pins 14 and 15 of the second module.

5. The MIFI device system of claim 2, wherein the power-on switch module comprises a power supply, a triode, and a MOS tube,

the positive electrode of the power supply is connected with pins 32, 33 and 34 of the second module, the negative electrode of the power supply is connected with the grounding pin of the second module;

the D electrode of the MOS tube is connected with the positive electrode of the power supply, and the S electrode of the MOS tube is connected with the pin 43 and the pin 44 of the first module;

the C pole of triode is connected the G pole of MOS pipe, the B pole of triode is connected 48 feet of second module, the E pole of triode is grounded.

6. The MIFI device system of claim 1, wherein the first module has a 2 pin connected to a 47 pin of the second module, the first module has a 3 pin connected to a 46 pin of the second module, and the second module has a 18 pin connected to a 55 pin of the first module.

7. The MIFI device system of claim 1, further comprising a power-on key coupled to pin 39 of the second module.

8. The MIFI device system of claim 1, wherein the second module's pin 31 is a battery sense pin connected to one end of a thermistor, the other end of the thermistor being grounded.

9. The MIFI equipment system of claim 1, wherein each of the groups of antennas comprises a main antenna and a diversity antenna, wherein one group of the main antenna is connected to the 32 pins of the first module and the diversity antenna is connected to the 28 pins of the first module, and the other group of the main antenna is connected to the 50 pins of the second module and the diversity antenna is connected to the 57 pins of the second module, respectively.

10. A method for implementing 4G surfing by using an MIFI device system, and a MIFI device system according to any one of claims 1 to 9, comprising the steps of:

the second module communicates with the background through the second SIM card and acquires information of the background card matched with the optimal network;

and the second module disconnects the network link shared by the transmission module and the first module, and independently shares the WIFI hotspot of the third SIM card.