CN210469284U - Many SIM cards intercom - Google Patents
Many SIM cards intercom Download PDFInfo
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- CN210469284U CN210469284U CN201921888337.5U CN201921888337U CN210469284U CN 210469284 U CN210469284 U CN 210469284U CN 201921888337 U CN201921888337 U CN 201921888337U CN 210469284 U CN210469284 U CN 210469284U
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Abstract
The utility model provides a many SIM cards intercom, including first SIM card, the second SIM card, microprocessor, analog switch, wireless communication module and switching button, microprocessor two sense terminals respectively with first, the second SIM card sense terminal is connected in order to judge that first SIM card and/or second SIM card are on the throne, the microprocessor input is connected with the switching button, the control end is connected with the first control end of analog switch, the communication end is connected with wireless communication module communication end, it is first, the second SIM card is connected with wireless communication module communication end respectively, it is first, when the second SIM card is all on the throne, microprocessor is according to the action of switching button, control analog switch and wireless communication module action are in order to realize first, switching between the second SIM card. The utility model discloses can support two SIM cards, and can realize a key switching between two SIM cards, can enough reduce user's the cost of buying the machine, again can convenience of customers use more.
Description
Technical Field
The utility model relates to a wireless communication equipment technical field, specificly a many SIM card intercom.
Background
The wide area interphone is used as public network cluster communication terminal equipment, utilizes network signals to transmit talkback, and has the advantages of unlimited distance arbitrary conversation, breaking of distance constraint, guaranteeing communication confidentiality, avoiding the situation of secret leakage caused by same frequency points, realizing voice, video and data services and the like. However, the existing mobile network has the problems that different operators exist in different regions of the same country, the operators also have differentiated services, and the network signal strength of different operators in the same region is different, so that in order to select a network with the best communication quality in different regions, a user usually needs to use two SIM cards, and the existing interphone can only support one SIM card, so that the user must use two interphones, which not only greatly increases the phone purchasing cost of the user, but also is more complicated to use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at prior art not enough, provide a many SIM cards intercom, can support two SIM cards, and can realize a key switching between two SIM cards, can enough reduce user's the cost of purchasing, again can convenience of customers use more.
The utility model discloses a following technical scheme realizes:
the utility model provides a many SIM cards intercom, including first SIM card, the second SIM card, microprocessor, analog switch, wireless communication module and switching button, microprocessor both ends detect terminal respectively with first, the second SIM card detect terminal is connected in order to judge first SIM card and/or the second SIM card is in the same place, microprocessor input and switching button are connected, the control end is connected with analog switch first control end, the communication end is connected with wireless communication module communication end, first, the second SIM card is connected with wireless communication module communication end respectively, first, when the second SIM card is all in the same place, microprocessor is according to the action of switching button, control analog switch and wireless communication module action are in order to realize the switching between first, the second SIM card.
Furthermore, the analog switch further comprises a second control end, a first switch, a third switch, a fifth switch, a seventh switch, a second switch, a fourth switch, a sixth switch and an eighth switch, wherein the first switch and the third switch, the fifth switch and the seventh switch are connected between the wireless communication module and the first SIM card and are linked, the second switch and the fourth switch, the sixth switch and the eighth switch are connected between the wireless communication module and the second SIM card and are linked, and the second control end controls the on-off of the first switch to the eighth switch.
Furthermore, the first SIM card detection end and the second SIM card detection end are both connected with a resistor, and the resistor is connected with a high level.
Furthermore, the interphone further comprises a shell, a PCB arranged in the shell and two clamping grooves arranged on one side of the shell and used for placing the first SIM card and the second SIM card respectively, the switching key is arranged on the other side of the shell, and the microprocessor, the analog switch and the wireless communication module are arranged on the PCB.
Furthermore, the interphone further comprises an antenna port, an audio coding and decoding unit, an audio amplifier, a loudspeaker, a microphone and a display unit, wherein the antenna port, the audio coding and decoding unit, the audio amplifier, the loudspeaker, the microphone and the display unit are arranged on the PCB, the antenna port is connected with the wireless communication module, the audio coding and decoding unit is in two-way connection with the wireless communication module, the input end of the audio coding and decoding unit is connected with the microphone, the output end of the audio coding and decoding unit is connected with the audio amplifier, and.
Furthermore, the wireless communication module adopts a network communication module supporting multiple systems.
Further, the wireless communication module adopts GM510 or ME 3630.
Further, the analog switch is SGM369 in model.
Furthermore, a spring-type SIM card seat is arranged in the card slot.
The utility model discloses following beneficial effect has:
the two detection ends of the microprocessor of the utility model are respectively connected with the first and the second SIM card detection ends to judge that the first SIM card and/or the second SIM card are/is in place, when only one SIM card is in place, the microprocessor works in the SIM card, when the first and the second SIM cards are in place, the microprocessor preferentially works in the first SIM card, namely the wireless communication module is connected with the first SIM card through the analog switch, when the switching is needed, the switching button is pressed, the microprocessor controls the analog switch to act according to the action of the switching button, so that the wireless communication module is disconnected from the first SIM card and connected with the second SIM card, the microprocessor controls the wireless communication module to reset and restart, the microprocessor can work in the second SIM card, the process of switching back to the first SIM card is the same as the above, thus, the interphone can support the double SIM cards, and the one-key switching between the two SIM cards, the user does not need to purchase two interphones, the machine purchasing cost of the user is reduced, and the user can use the machine more conveniently.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a front view structure diagram of the present invention.
Fig. 2 is a schematic side view of the present invention.
Fig. 3 is a schematic block diagram of the present invention.
Fig. 4 is a schematic circuit diagram of the present invention.
Wherein, 1, a shell; 2. a card slot; 3. switching a key; 41. a first SIM card; 42. a second SIM card; 5. a microprocessor; 6. an analog switch; 7. a wireless communication module; 8. an antenna port; 9. an audio encoding and decoding unit; 10. an audio amplifier; 11. a speaker; 12. a microphone; 13. a display unit; k1, a first switch; k2, a second switch; k3, a third switch; k4, fourth switch; k5, a fifth switch; k6, a sixth switch; k7, seventh switch; k8, eighth switch; r1, resistance; r2, resistance.
Detailed Description
As shown in fig. 1 to 4, the multi-SIM interphone includes a chassis 1, a PCB disposed in the chassis 1, two card slots 2 disposed on one side of the chassis 1, elastic SIM card seats disposed in the two card slots 2, a switch key 3 disposed on the other side of the chassis 1, an antenna port 8 disposed on the PCB, an audio codec unit 9, an audio amplifier 10, a speaker 11, a microphone 12, a display unit 13, a microprocessor 5, an analog switch 6, a wireless communication module 7, a first SIM card 41, a second SIM card 42, a resistor R1 and a resistor R2, wherein the antenna port 8 is connected to the wireless communication module 7, the audio codec unit 9 is bidirectionally connected to the wireless communication module 7, an input end of the audio codec unit 9 is connected to the microphone 12, an output end of the audio amplifier is connected to the audio amplifier 10, the audio amplifier 10 is connected to the speaker 11, a detection end dww 1 of the first SIM card 41 and a detection end DWS2 of the second SIM card 42 are connected to a resistor R1 and a resistor R2, the other ends of the resistor R1 and the resistor R2 are respectively connected with a high level VCC, a detection end DSW1 of the microprocessor 5 is connected with a detection end DSW1 of the first SIM card 41, the other detection end DSW2 is connected with a detection end DSW2 of the second SIM card 42 to judge that the first SIM card 41 and/or the second SIM card 42 are/is in place, the input end of the microprocessor 5 is connected with the switching key 3, the control end PC3 is connected with a first control end of the analog switch 6, and the communication end is bidirectionally connected with a communication end of the wireless communication module, the first SIM card 41 and the second SIM card 42 are respectively connected with the communication end of the wireless communication module, and when the first SIM card 41 and the second SIM card 42 are in place, the microprocessor 5 controls the actions of the analog switch 6 and the wireless communication module 7 according to the actions of the switching key 3 to realize the switching between the first SIM card 41 and the second SIM card 42.
The analog switch 6 further includes a second control terminal PC3, a first switch K1 and a third switch K3, a fifth switch K5 and a seventh switch K7, which are connected between the wireless communication module 7 and the first SIM card 41 and linked together, and a second switch K2 and a fourth switch K4, a sixth switch K6 and an eighth switch K8, which are connected between the wireless communication module 7 and the second SIM card 42 and linked together, wherein the second control terminal PC3 controls the on/off of the first to eighth switches.
In this embodiment, the wireless communication module 7 adopts a network communication module supporting multiple systems, specifically GM510 or ME 3630; analog switch 6 is model SGM 369.
The utility model discloses the theory of operation as follows:
when the first SIM card 41 is not in place, the VCC power supply gives a high level to the pin DSW1(PC10) of the microprocessor 5 through the resistor R1, so that the microprocessor 5 determines that the first SIM card 41 is not in place, and when the first SIM card 41 is in place, the first SIM card 41 pulls the pin DSW1(PC10) to a low level, so that the microprocessor 5 determines that the first SIM card 41 is in place;
when the second SIM card 42 is not in place, the VCC power supply gives a high level to the pin DSW2(PC11) of the microprocessor 5 through the resistor R2, so that the microprocessor 5 determines that the second SIM card 42 is not in place, and when the second SIM card 42 is in place, the second SIM card 42 pulls the pin DSW2(PC11) to a low level, so that the microprocessor 5 determines that the second SIM card 42 is in place;
when only the first SIM card 41 or the second SIM card 42 is in place, the interphone works on the SIM card in place;
when the first SIM card 41 and the second SIM card 42 are both in place, the intercom preferentially operates in the first SIM card 41, the microprocessor 5 sets the pin of the second control terminal PC3 to low level, so that the first switch K1, the third switch K3, the fifth switch K5 and the seventh switch K7 of the analog switch are in a closed state, the second switch K2, the fourth switch K4, the sixth switch K6 and the eighth switch K8 of the analog switch 6 are in an open state, the pin positions VREG, RST and I/O, CLK of the SIM card interface of the wireless communication module 7 are connected with the pin positions VREG1, RST1, I/O1 and CLK1 of the first SIM card 41 through the analog switch 6 in a one-to-one correspondence manner, so that the intercom operates in the first SIM card 41;
the switching key 3 is pressed down, the microprocessor 3 sets the pin of the second control end PC3 to be at a high level, so that the second switch K2, the fourth switch K4, the sixth switch K6 and the eighth switch K8 of the analog switch 6 are in a closed state, the first switch K1, the third switch K3, the fifth switch K5 and the seventh switch K7 of the analog switch 6 are in an open state, the pin VREG, the RST and the I/O, CLK of the SIM card interface of the wireless communication module 7 are in one-to-one correspondence with the pin VREG2, the RST2, the I/O2 and the CLK2 of the second SIM card 42 through the analog switch 6, the microprocessor 5 sends an instruction to the wireless communication module 7 to reset and restart, after resetting, the microprocessor inquires again to obtain the SIM card, the interphone can work on the second SIM card 42, wherein the microprocessor 5 controls the wireless communication module 7 to reset and restart in the prior art.
The switching key 3 is pressed again, the microprocessor 5 sets the pin PC3 of the second control terminal to low level again, the analog switch 6 is switched back to the channel corresponding to the first SIM card 41, the microprocessor 5 sends an instruction to the wireless communication module to reset and restart, after the reset and restart, the interphone inquires again to obtain the SIM card, and the interphone works back to the first SIM card 41.
Therefore, one-key quick SIM card switching can be realized.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.
Claims (9)
1. The utility model provides a many SIM cards intercom which characterized in that: the device comprises a first SIM card, a second SIM card, a microprocessor, an analog switch, a wireless communication module and a switching key, wherein two detection ends of the microprocessor are respectively connected with the detection ends of the first and second SIM cards to judge that the first SIM card and/or the second SIM card are in place, the input end of the microprocessor is connected with the switching key, the control end is connected with the first control end of the analog switch, the communication end is connected with the communication end of the wireless communication module, the first and second SIM cards are respectively connected with the communication end of the wireless communication module, and when the first and second SIM cards are in place, the microprocessor controls the actions of the analog switch and the wireless communication module according to the action of the switching key so as to realize the switching between the first and second SIM cards.
2. The multi-SIM-card interphone according to claim 1, characterized in that: the analog switch further comprises a second control end, a first switch, a third switch, a fifth switch, a seventh switch, a second switch, a fourth switch, a sixth switch and an eighth switch, wherein the first switch and the third switch, the fifth switch and the seventh switch are connected between the wireless communication module and the first SIM card and are in linkage with each other, the second switch and the fourth switch, the sixth switch and the eighth switch are connected between the wireless communication module and the second SIM card and are in linkage with each other, and the second control end controls the on-off of the first switch, the second switch, the third.
3. The multi-SIM-card interphone according to claim 1, characterized in that: the first SIM card detection end and the second SIM card detection end are both connected with a resistor, and the resistor is connected with a high level.
4. The multi-SIM-card interphone according to claim 1, 2 or 3, characterized in that: the interphone further comprises a shell, a PCB arranged in the shell and two clamping grooves arranged on one side of the shell and used for placing the first SIM card and the second SIM card respectively, the switching key is arranged on the other side of the shell, and the microprocessor, the analog switch and the wireless communication module are arranged on the PCB.
5. The multi-SIM-card interphone according to claim 4, characterized in that: the interphone further comprises an antenna port, an audio coding and decoding unit, an audio amplifier, a loudspeaker, a microphone and a display unit, wherein the antenna port, the audio coding and decoding unit, the audio amplifier, the loudspeaker, the microphone and the display unit are arranged on the PCB, the antenna port is connected with the wireless communication module, the audio coding and decoding unit is in two-way connection with the wireless communication module, the input end of the audio coding and decoding unit is connected with the microphone, the output end of the audio coding and decoding unit is connected with the audio amplifier.
6. The multi-SIM-card interphone according to claim 1, 2 or 3, characterized in that: the wireless communication module adopts a network communication module supporting various systems.
7. The multi-SIM-card interphone according to claim 6, characterized in that: the wireless communication module adopts GM510 or ME 3630.
8. The multi-SIM-card interphone according to claim 1, 2 or 3, characterized in that: the analog switch is SGM369 in model.
9. The multi-SIM-card interphone according to claim 4, characterized in that: and a spring-pressing SIM card seat is arranged in the card slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921888337.5U CN210469284U (en) | 2019-11-05 | 2019-11-05 | Many SIM cards intercom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921888337.5U CN210469284U (en) | 2019-11-05 | 2019-11-05 | Many SIM cards intercom |
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| Publication Number | Publication Date |
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| CN210469284U true CN210469284U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921888337.5U Active CN210469284U (en) | 2019-11-05 | 2019-11-05 | Many SIM cards intercom |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346962A (en) * | 2021-05-31 | 2021-09-03 | 浙江大华技术股份有限公司 | Radio frequency control method, device and radio frequency system |
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2019
- 2019-11-05 CN CN201921888337.5U patent/CN210469284U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346962A (en) * | 2021-05-31 | 2021-09-03 | 浙江大华技术股份有限公司 | Radio frequency control method, device and radio frequency system |
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