CN107786223B - Prevent SIM card from burning the method, apparatus and computer equipment of card - Google Patents
Prevent SIM card from burning the method, apparatus and computer equipment of card Download PDFInfo
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- CN107786223B CN107786223B CN201711025293.9A CN201711025293A CN107786223B CN 107786223 B CN107786223 B CN 107786223B CN 201711025293 A CN201711025293 A CN 201711025293A CN 107786223 B CN107786223 B CN 107786223B
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3816—Mechanical arrangements for accommodating identification devices, e.g. cards or chips; with connectors for programming identification devices
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Abstract
This application involves a kind of method, apparatus and computer equipment for preventing SIM card from burning card.Prevent SIM card from burning the method for card, which is characterized in that the terminal based on built-in power management module and Kato, Kato are equipped with the conductive unit that can be contacted with the power pins of SD card；The instantaneous voltage of power management module detection SD card；The plug state of transient fault voltage detection SD card when being contacted according to the power pins of SD card and conductive unit；When SD card is in extraction state, triggering power management module disconnects the power supply of SD card.The plug state of transient fault voltage detection SD card when the above method is contacted by power management module according to the power pins and conductive unit of SD card, and when SD card is in extraction state, triggering power management module and then the power supply for quickly and effectively disconnecting SD card, it is by the way of hardware trigger, power-off is timely, meanwhile, in the case where guaranteeing reliable power-off, the power control circuit being additionally arranged on Kato can also be saved, cost has been saved.
Description
Technical Field
The application relates to the technical field of terminal card holders, in particular to a method and a device for preventing a SIM card from burning and computer equipment.
Background
The SIM card and the SD card in the communication terminal equipment are integrated in a card support, the SIM card is arranged inside, and the SD card is arranged outside.
Disclosure of Invention
The embodiment of the application provides a method and a device for preventing burning of an SIM card and computer equipment, which can effectively prevent the burning of the SIM card and have low cost.
A method for preventing SIM card from burning card, based on built-in power management module and terminal of card support, the card support is equipped with the conductive unit that can contact with power pin of SD card;
the power management module detects the instantaneous voltage of the SD card;
detecting the plugging state of the SD card according to the instantaneous voltage when the power pin of the SD card is contacted with the conductive unit;
and when the SD card is in the unplugged state, triggering the power management module to disconnect the power of the SD card.
An apparatus for preventing burning of a SIM card, comprising:
the card support is provided with a conductive unit which can be contacted with a power supply pin of the SD card;
the power management module is used for detecting the instantaneous voltage of the SD card and detecting the plugging state of the SD card according to the instantaneous voltage when a power pin of the SD card is contacted with the conductive unit; and when the SD card is in the unplugged state, triggering the power management module to disconnect the power of the SD card.
Computer equipment comprising the device for preventing SIM card from burning
According to the method, the device and the computer equipment for preventing the SIM card from burning the card, the plugging state of the SD card is detected by the power management module in the terminal according to the instantaneous voltage when the power pin of the SD card is contacted with the conductive unit, and when the SD card is in the plugging state, the power management module is triggered to further quickly and effectively disconnect the power supply of the SD card.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow diagram of a method of preventing burning of a SIM card in one embodiment;
FIG. 2 is a schematic diagram of an embodiment of a triple-option card holder;
FIG. 3 is a second schematic diagram of a third alternative card holder according to an embodiment;
FIG. 4 is a schematic diagram of a two-out-of-three card holder according to an embodiment;
FIG. 5 is a flow chart of a method for preventing burning of a SIM card in another embodiment;
FIG. 6 is a flow chart of a method for preventing burning of a SIM card in yet another embodiment;
FIG. 7 is a block diagram of the internal structure of an apparatus for preventing burning of a SIM card in one embodiment;
fig. 8 is a block diagram of a partial structure of a mobile phone related to a computer device provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first card slot may be referred to as a second card slot, and similarly, a second card slot may be referred to as a first card slot, without departing from the scope of the present application. The first card slot and the second card slot are both card slots, but they are not the same card slot.
As shown in FIG. 1, a method for preventing burning of a SIM card is based on a terminal with a built-in power management module and a card holder, wherein the card holder is provided with a conductive unit capable of contacting with a power pin of an SD card.
Specifically, the Power Management module is a Power Management Integrated Circuit (PMIC) for managing Power devices in the host system, and is commonly used in mobile phones and various mobile terminal devices. Specifically, the power management integrated circuit includes a low dropout regulator (LDO) having functions of over-current protection, over-temperature protection, precision reference source, differential amplifier, and delay.
Specifically, the card holder may be a two-out-of-three card holder, and one SIM card and one SD card may be placed at the same time, or two SIM cards may be placed at the same time.
Optionally, the card holder can be a three-out-of-three card holder, and two nano SIM cards and 1 SD card can be placed at the same time.
It should be noted that the SD Card is understood as a Micro SD Card, which is a flash memory Card with the original name of Trans-flash Card (TF Card).
In one embodiment, a method for preventing burning of a SIM card comprises the following steps:
step 102: the power management module detects an instantaneous voltage of the SD card.
When the card holder for placing the SIM card and the SD card is arranged in the terminal, the power management module can detect the instantaneous voltage of the power pin of the SD card. Of course, the power management module can also detect the instantaneous voltage of the SD card in real time during the process of pulling out the SD card. The power management module is a power device in the terminal for managing the host system, and the low dropout regulator in the power management integrated circuit has the functions of overcurrent protection, overtemperature protection, a precision reference source, a differential amplifier, a delayer and the like.
Step 104: and detecting the plugging state of the SD card according to the instantaneous voltage when the power supply pin of the SD card is contacted with the conductive unit.
In the process of plugging and unplugging the SD card, the power pin of the SD card can be in contact with the conductive unit, at the moment, the power management module can detect the instantaneous voltage of the SD card when the power pin is in contact with the conductive unit, and the plugging and unplugging state of the SD card is judged according to the detected instantaneous voltage.
Specifically, the plugging state may be a plugging state or a unplugging state.
Step 106: and when the SD card is in the unplugged state, triggering the power management module to disconnect the power of the SD card.
And when the SD card is in a pull-out state, triggering the overcurrent protection of the low dropout regulator in the power management module, and disconnecting the power supply of the SD card.
In particular, the trigger time is usually 200 microseconds (us), and the power supply of the SD card can be quickly and effectively turned off.
According to the method for preventing the SIM card from burning the card, the plug-in state of the SD card is detected by the power management module in the terminal according to the instantaneous voltage when the power pin of the SD card is contacted with the conductive unit, and when the SD card is in the plug-out state, the power management module is triggered to rapidly and effectively disconnect the power supply of the SD card.
In one embodiment, the card holder comprises a board body, and a first card slot and a second card slot, wherein the first card slot is used for placing an SD card or a SIM card, and the second card slot is used for placing at least one SIM card, which are arranged on the board body.
As shown in fig. 2 and 3, the card holder is specifically a three-out-of-three card holder. The card holder comprises a board body 20, and a first card slot 210 for placing an SD card and a second card slot 220 for placing two SIM cards, which are arranged on the board body 20.
The second card slot 220 includes a first slot 221 for placing a first SIM card and a second slot 223 for placing a second SIM card.
Optionally, the second card slot for placing the two SIM cards may also be provided as two slots separately arranged.
A conductive unit 231 is disposed on the board body 20 for isolating the first card slot 210 from the second card slot 220 and facing the power pins. It can be understood that the plate body 20 between the first card slot 210 and the second card slot 220 separates the first card slot 210 from the second card slot 220, and the plate body 20 between the first card slot 210 and the second card slot 220 is referred to as a beam member 230. The portion of the beam 230 facing the power pins of the SD card is provided with conductive elements 231 when the card holder is placed in the terminal.
Specifically, when the conductive unit 231 is in contact with the power pin, the power pin is short-circuited with a ground pin of the SD card. That is, when the SD card is pulled out, the conductive unit on the card holder contacts the power pin, so that the power pin of the SD card is conducted with the ground pin of the SD card, and short circuit occurs.
In one embodiment, the conductive elements 231 may be in a strip structure, that is, the conductive elements 231 in the strip structure are tiled on the side of the beam member 230 facing the power pins of the SD card.
Optionally, the conductive unit 231 may also be in a regular or irregular pattern such as an ellipse, a diamond, etc., as long as it is ensured that the conductive unit 231 can be in contact with a power pin of the SD card in the process of plugging and unplugging the SD card.
In one embodiment, the conductive unit 231 may be a metal conductive layer, a conductive glass layer, or a conductive silicone strip.
Specifically, the conductive element 231 may be a metal conductive layer, which may be a copper layer or a tin layer or an aluminum layer, and may be plated on the beam member on the side facing the power pin of the SD card through an electroplating process.
Optionally, the conductive unit 231 may also be an ITO conductive glass layer, which is formed by coating a layer of indium tin oxide (commonly referred to as ITO) film on a soda-lime-based or silicon-boron-based substrate glass by various methods such as sputtering and evaporation.
Optionally, the conductive unit 231 may also be a conductive silica gel strip, which is commonly called a zebra strip and is formed by alternately layering and stacking conductive silica gel and insulating silica gel and then vulcanizing. The conductive rubber connector has stable and reliable performance and simple and efficient production and assembly.
Of course, when the conductive element 231 contacts the power pin of the SD card, a conductive material capable of conducting the power pin of the SD card and the ground pin of the SD card to form a short circuit can be used as an alternative material for forming the conductive element 231, and is not further limited herein.
In one embodiment, as shown in FIG. 4, the card holder is a two-out-of-three card holder. The two-out-of-three card holder comprises a board body 40, a first card slot 410 and a second card slot 420, wherein the first card slot 410 is arranged on the board body and used for placing an SD card or a first SIM card, and the second card slot 420 is used for placing a second SIM card. First card slot 410 includes a first slot 411 for receiving an SD card and a second slot 413 for receiving a first SIM card. The first slot 411 and the first slot 413 are orthogonally overlapped.
A conductive unit 431 is disposed on the board body for isolating the first card slot 410 and the second card slot 420 and facing the power pins. It can be understood that the plate body between the first card slot 410 and the second card slot 420 separates the first card slot 310 and the second card slot 420, and the plate body 40 between the first card slot 410 and the second card slot 420 is referred to as a beam member 430. When the card holder is placed in the terminal, the beam member 430 on the side facing the power pins of the SD card is provided with a conductive element 431.
Specifically, when the conductive unit 431 is in contact with the power pin, the power pin is short-circuited with a ground pin of the SD card. That is, when the SD card is pulled out, the conductive unit 431 on the card holder contacts the power pin, so that the power pin of the SD card is conducted with the ground pin of the SD card, and short circuit occurs.
In one embodiment, detecting the plugging state of the SD card according to an instantaneous voltage when a power pin of the SD card is in contact with the conductive unit includes:
and when the instantaneous voltage is lower than a preset threshold value, the SD card is in a pull-out state.
In the process of pulling out the SD card, the conductive unit on the card support can be in contact with the power supply pin, so that the power supply pin of the SD card can be conducted with the grounding pin of the SD card, and further short circuit can be realized. The instantaneous current is large and the instantaneous voltage is small during short circuit.
That is, when the instantaneous voltage of the conductive unit contacting the power pin is lower than the preset threshold, it can be determined that the power pin of the SD card is conducted with the ground pin of the SD card to cause a short circuit, and at this time, the SD card is in a pulled-out state.
When the SD card is in a pull-out state, the trigger time is usually 200 microseconds (us), and the power supply of the SD card can be quickly and effectively turned off.
When the SD card is in a pull-out state, the overcurrent protection of the low dropout regulator in the power management module is triggered, and the power supply of the SD card is disconnected. In the process of inserting the SD card, the conductive unit is also brought into contact with the power supply pin, but the SD card is powered on at this time, and the instantaneous voltage of the SD card is not detected, that is, when the instantaneous voltage is not detected, the SD card is in an incompletely inserted state.
In one embodiment, the method for preventing burning of the SIM card further comprises the step of controlling the restoration of power supply to the SD card by the power management module when the SD card is in the fully inserted state.
In particular, the fully inserted state may be understood as: after the SD card is completely inserted into the card support, a detection pin used for detecting that the SD card is in a completely inserted state in the terminal triggers the power management module to interrupt the power-off state of the SD card, the terminal can restart and identify the SIM card or the SD card, and then the power management module controls and restores the power supply to the SD card.
As shown in fig. 5, in an embodiment, the method for preventing burning of the SIM card further includes:
step 502: and setting the default level value of the plug-in and plug-out state detection pin of the SD card as a low level.
It should be noted that the plug-in/plug-out state detection pin of the SD card is used to connect the SD card and the SIM card, and the plug-in/plug-out state of the SD card can be detected according to the user-defined setting.
Specifically, the default level value of the plug-in state detection pin of the SD card is set to a low level, that is, the plug-in state detection pin of the SD card and the SIM card is preset to a non-low level, that is, 0V before the SIM card is not inserted.
Step 504: the validity of the conductive element is detected.
The conductive unit is arranged on the card support structure, and the card support structure can be frequently pulled out or inserted by a user, so that the validity of the conductive unit needs to be detected in order to avoid the SIM card burning phenomenon caused by the failure of the conductive unit.
Further, detecting the effectiveness of the conductive element specifically includes: detecting the instantaneous current when a power supply pin of the SD card is contacted with the conductive unit; and when the instantaneous current is smaller than the preset current value, judging that the conductive unit fails. When the conductive unit is contacted with the power pin, the power pin of the SD card can be conducted with the grounding pin of the SD card, so that the short circuit is realized, and the instantaneous current during the short circuit can exceed the preset current value. And when the instantaneous current of the power pin of the SD card in contact with the conductive unit is less than a preset current value, judging that the conductive unit fails.
Step 506: and when the conductive unit fails, detecting the change state of the level value of the plugging state detection pin.
When the conductive unit fails, a detection circuit in the terminal can detect the change state of the level value of the plug-in state detection pin of the SD card. The changing state can be changed from low level to high level, and also can be changed from high level to low level. When the level value of the plugging state detection pin is changed from low level to high level, the SD card is in a plugging state at the moment.
Step 508: and when the level value of the plugging state detection pin is changed from high level to low level, controlling the power management module to cut off the power supply of the SD card.
When the level value of the plugging state detection pin is changed from low level to high level, the SD card is in a plugging state at the moment. And when the level value of the plugging state detection pin is changed from high level to low level, the SD card is in a plugging state at the moment, and the power management module is controlled to disconnect the power supply of the SD card.
In this embodiment, even if the conductive unit fails, the power management module is controlled to disconnect the power supply of the SD card in time by detecting and determining the change of the level value of the SD card plug-in/plug-out state detection pin when the SD card is plugged out, so as to prevent the SIM card from being burned out.
In one embodiment, the method for preventing burning of the SIM card further comprises:
step 602: the validity of the conductive element is detected.
Further, detecting the effectiveness of the conductive element specifically includes: detecting the instantaneous current when a power supply pin of the SD card is contacted with the conductive unit; and when the instantaneous current is smaller than the preset current value, judging that the conductive unit fails. When the conductive unit is contacted with the power pin, the power pin of the SD card can be conducted with the grounding pin of the SD card, so that the short circuit is realized, and the instantaneous current during the short circuit can exceed the preset current value. And when the instantaneous current of the power pin of the SD card in contact with the conductive unit is less than a preset current value, judging that the conductive unit fails.
Step 604: and when the conductive unit fails, judging whether a signal output by the plug state detection pin of the SD card is detected.
In case of failure of the conductive unit, a double insurance mechanism may be provided to avoid the burning of the SIM card. The meaning of the plug-pull state pin of the SD card can be set in a user-defined mode according to the requirements of a user. When the terminal can detect the real-time output signal of the plug-pull state pin of the SD card, the SD card is considered to be in the plug-pull state, and when the terminal cannot detect the real-time output signal of the plug-pull state pin of the SD card, the SD card is considered to be in the plug-pull state.
When the signal output by the plug state detection pin of the SD card is not detected, step 606 is executed: and controlling a power supply management module to cut off the power supply of the SD card.
In this embodiment, even if the conductive unit fails, the SD card is not burned out by controlling the power management module to disconnect the power of the SD card in time when the SD card is pulled out by determining whether a signal output by the SD card insertion/removal state detection pin is detected.
As shown in fig. 7, the present application further provides an apparatus for preventing burning of a SIM card, which is applied to a terminal and includes a card holder 710 and a power management module 720. The card holder 710 is provided with a conductive unit 711 capable of contacting with a power pin of the SD card; the power management module 720 is configured to detect an instantaneous voltage of the SD card, and detect a plugging/unplugging state of the SD card according to the instantaneous voltage when a power pin of the SD card contacts the conductive unit 711; when the SD card is in the unplugged state, the power management module 720 is triggered to disconnect the power of the SD card.
Specifically, the card holder 710 may be a two-out-of-three card holder, and may hold one SIM card and one SD card at the same time, or may hold two SIM cards at the same time.
Optionally, the card holder 710 may also be a three-out-of-three card holder, and two nano SIM cards and 1 SD card may be placed at the same time.
It should be noted that the SD Card is understood as a Micro SD Card, which is a flash memory Card with the original name of Trans-flash Card (TF Card).
Specifically, the Power Management module 720 is a Power Management Integrated Circuit (PMIC) for managing Power devices in the host system, which is commonly used in mobile phones and various mobile terminal devices. Specifically, the power management integrated circuit includes a low dropout regulator (LDO) having functions of over-current protection, over-temperature protection, precision reference source, differential amplifier, and delay.
According to the device, the plugging state of the SD card is detected through the power management module in the terminal according to the instantaneous voltage when the power pin of the SD card is in contact with the conductive unit, and when the SD card is in the plugging state, the power management module is triggered to rapidly and effectively disconnect the power supply of the SD card.
In one embodiment, the card holder comprises a board body, and a first card slot and a second card slot, wherein the first card slot is used for placing an SD card or a SIM card, and the second card slot is used for placing at least one SIM card, which are arranged on the board body.
Specifically, the card holder is a three-out-of-three card holder. The card support comprises a plate body, a first card slot and a second card slot, wherein the first card slot is arranged on the plate body and used for placing an SD card, and the second card slot is used for placing two SIM cards. The second card slot comprises a first slot position used for placing the first SIM card and a second slot position used for placing the second SIM card. Optionally, the second card slot for placing the two SIM cards may also be provided as two slots separately arranged.
And a conductive unit is arranged on the plate body which is used for isolating the first clamping groove and the second clamping groove and faces the power supply pin. The plate body between the first clamping groove and the second clamping groove enables the first clamping groove and the second clamping groove to be arranged in an isolated mode, and the plate body between the first clamping groove and the second clamping groove is called as a beam part. When the card holder is placed in the terminal, a conductive unit is provided on the beam member on the side facing the power supply pin of the SD card.
Specifically, when the conductive unit is in contact with the power pin, the power pin is short-circuited with a ground pin of the SD card. That is, when the SD card is pulled out, the conductive unit on the card holder contacts the power pin, so that the power pin of the SD card is conducted with the ground pin of the SD card, and short circuit occurs.
In one embodiment, the card holder may also be a two-out-of-three card holder. The two-out-of-three card holder comprises a plate body, a first card slot and a second card slot, wherein the first card slot is arranged on the plate body and used for placing an SD card or a first SIM card, and the second card slot is used for placing a second SIM card. The first card slot comprises a first slot position used for placing an SD card and a second slot position used for placing a first SIM card. The first slot position and the first slot position are orthogonally overlapped.
And the plate body used for isolating the first clamping groove from the second clamping groove and facing the power supply pin is provided with a conductive unit. The plate body between the first clamping groove and the second clamping groove enables the first clamping groove and the second clamping groove to be arranged in an isolated mode, and the plate body between the first clamping groove and the second clamping groove is called as a beam part. When the card holder is placed in the terminal, a conductive unit is provided on the beam member on the side facing the power supply pin of the SD card.
Specifically, when the conductive unit is in contact with the power pin, the power pin is short-circuited with a ground pin of the SD card. That is, when the SD card is pulled out, the conductive unit on the card holder contacts the power pin, so that the power pin of the SD card is conducted with the ground pin of the SD card, and short circuit occurs.
In one embodiment, the conductive elements may be in a strip structure, that is, the conductive elements in the strip structure are tiled on the side of the beam member facing the power pins of the SD card.
Optionally, the conductive unit may also be in a regular or irregular pattern such as an ellipse, a diamond, or the like, as long as it is ensured that the conductive unit can be in contact with the power pin of the SD card in the process of plugging and unplugging the SD card.
In one embodiment, the conductive unit may be a metal conductive layer, a conductive glass layer, or a conductive silicone strip.
Specifically, the conductive element may be a metal conductive layer, and a metal conductive layer may be plated on the beam member on the side facing the power pin of the SD card through an electroplating process, and the metal conductive layer may be a copper layer or a tin layer or an aluminum layer.
Optionally, the conductive unit may also be an ITO conductive glass layer, which is formed by coating a layer of indium tin oxide (commonly referred to as ITO) film on a soda-lime-based or silicon-boron-based substrate glass by various methods such as sputtering and evaporation.
Optionally, the conductive unit may also be a conductive silica gel strip, which is commonly called a zebra strip, and is formed by alternately layering and stacking conductive silica gel and insulating silica gel and then vulcanizing. The conductive rubber connector has stable and reliable performance and simple and efficient production and assembly.
Of course, when the conductive unit contacts with the power pin of the SD card, the conductive material capable of conducting the power pin of the SD card and the ground pin of the SD card to form a short circuit can be used as an alternative material for making the conductive unit, and is not further limited herein.
The division of each module in the device for preventing burning of the SIM card is only used for illustration, in other embodiments, the device for preventing burning of the SIM card can be divided into different modules as required to complete all or part of the functions of the device for preventing burning of the SIM card.
The embodiment of the application also provides computer equipment. As shown in fig. 6, for convenience of explanation, only the parts related to the embodiments of the present application are shown, and details of the technology are not disclosed, please refer to the method part of the embodiments of the present application. The computer device may be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a vehicle-mounted computer, a wearable device, and the like, taking the computer device as the mobile phone as an example:
fig. 8 is a block diagram of a partial structure of a mobile phone related to a computer device provided in an embodiment of the present application. Referring to fig. 8, the handset includes: the SD card includes a card holder 801 provided with a conductive unit capable of contacting a power supply pin of the SD card, a Radio Frequency (RF) circuit 810, a memory 820, an input unit 830, a display unit 840, a sensor 850, an audio circuit 860, a wireless fidelity (WiFi) module 870, a processor 880, and a power management module 890. Those skilled in the art will appreciate that the handset configuration shown in fig. 8 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The RF circuit 810 may be used for receiving and transmitting signals during information transmission and reception or during a call, and may receive downlink information of a base station and then process the downlink information to the processor 880; the uplink data may also be transmitted to the base station. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 810 may also communicate with networks and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE)), e-mail, Short Messaging Service (SMS), and the like.
The memory 820 may be used to store software programs and modules, and the processor 880 executes various functional applications and data processing of the cellular phone by operating the software programs and modules stored in the memory 820. The memory 820 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as an application program for a sound playing function, an application program for an image playing function, and the like), and the like; the data storage area may store data (such as audio data, an address book, etc.) created according to the use of the mobile phone, and the like. Further, the memory 820 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The input unit 830 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone 800. Specifically, the input unit 830 may include a touch panel 831 and other input devices 832. The touch panel 831, which may also be referred to as a touch screen, may collect touch operations performed by a user on or near the touch panel 831 (e.g., operations performed by the user on the touch panel 831 or near the touch panel 831 using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a preset program. In one embodiment, the touch panel 831 can include two portions, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts it to touch point coordinates, and sends the touch point coordinates to the processor 880, and can receive and execute commands from the processor 880. In addition, the touch panel 831 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 830 may include other input devices 832 in addition to the touch panel 831. In particular, other input devices 832 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), and the like.
The display unit 840 may be used to display information input by the user or information provided to the user and various menus of the cellular phone. The display unit 840 may include a display panel 841. In one embodiment, the Display panel 841 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. In one embodiment, touch panel 831 can overlay display panel 841, and when touch panel 831 detects a touch operation thereon or nearby, communicate to processor 880 to determine the type of touch event, and processor 880 can then provide a corresponding visual output on display panel 841 based on the type of touch event. Although in fig. 8, the touch panel 831 and the display panel 841 are two separate components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 831 and the display panel 841 may be integrated to implement the input and output functions of the mobile phone.
The cell phone 800 may also include at least one sensor 850, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 841 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 841 and/or the backlight when the mobile phone is moved to the ear. The motion sensor can comprise an acceleration sensor, the acceleration sensor can detect the magnitude of acceleration in each direction, the magnitude and the direction of gravity can be detected when the mobile phone is static, and the motion sensor can be used for identifying the application of the gesture of the mobile phone (such as horizontal and vertical screen switching), the vibration identification related functions (such as pedometer and knocking) and the like; the mobile phone may be provided with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor.
The audio circuitry 860, speaker 861 and microphone 862 may provide an audio interface between the user and the handset. The audio circuit 860 can transmit the electrical signal converted from the received audio data to the speaker 861, and the electrical signal is converted into a sound signal by the speaker 861 and output; on the other hand, the microphone 862 converts the collected sound signal into an electrical signal, which is received by the audio circuit 860 and converted into audio data, and then the audio data is output to the processor 880 for processing, and then the audio data may be transmitted to another mobile phone through the RF circuit 810, or the audio data may be output to the memory 820 for subsequent processing.
WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to send and receive e-mails, browse webpages, access streaming media and the like through the WiFi module 870, and provides wireless broadband Internet access for the user. Although fig. 8 shows WiFi module 870, it is understood that it is not an essential component of cell phone 800 and may be omitted as desired.
The processor 880 is a control center of the mobile phone, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 820 and calling data stored in the memory 820, thereby integrally monitoring the mobile phone. In one embodiment, processor 880 may include one or more processing units. In one embodiment, the processor 880 may integrate an application processor and a modem processor, wherein the application processor primarily handles operating systems, user interfaces, applications, and the like; the modem processor handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 880.
The phone 800 further includes a power management module 890 (including a battery, etc.) for supplying power to various components, and preferably, the power management module 890 is logically connected to the processor 880 for managing charging, discharging, and power consumption through the power management module 890.
In one embodiment, the cell phone 800 may also include a camera, a bluetooth module, and the like.
In the computer equipment, because the device for preventing the SIM card from burning the card is arranged, the plugging state of the SD card is detected by the power management module in the computer equipment according to the instantaneous voltage when the power pin of the SD card is contacted with the conductive unit, and when the SD card is in the plugging state, the power management module is triggered to rapidly and effectively disconnect the power supply of the SD card.
Any reference to memory, storage, database, or other medium used herein may include non-volatile and/or volatile memory. Suitable non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and bus dynamic RAM (RDRAM).
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for preventing SIM card from burning is characterized in that a terminal based on a built-in power management module and a card holder is provided with a conductive unit capable of contacting with a power pin of an SD card; the method comprises the following steps:
the power management module detects the instantaneous voltage of the SD card; the power management module is a power management integrated circuit;
in the process of plugging and unplugging the SD card, a power pin of the SD card is in contact with the conductive unit, and the power management module detects the plugging and unplugging state of the SD card according to the instantaneous voltage when the power pin of the SD card is in contact with the conductive unit;
and when the SD card is in the unplugged state, triggering the power management module to disconnect the power of the SD card.
2. The method for preventing burning of the SIM card according to claim 1, wherein the card holder comprises a board body, and a first card slot for placing the SD card or the SIM card and a second card slot for placing at least one SIM card are arranged on the board body;
the plate body used for isolating the first clamping groove from the second clamping groove and facing the power supply pin is provided with the conductive unit;
when the conductive unit is in contact with the power pin, the power pin is short-circuited with a ground pin of the SD card.
3. The method for preventing burning of the SIM card according to claim 1, wherein detecting the plugging state of the SD card according to the instantaneous voltage when the power pin of the SD card is in contact with the conductive unit comprises:
and when the instantaneous voltage is lower than a preset threshold value, the SD card is in a pull-out state.
4. The method for preventing burning of the SIM card according to claim 1, further comprising:
setting a default level value of a plug-in and pull-out state detection pin of the SD card as a low level;
detecting the effectiveness of the conductive element;
when the conductive unit fails, detecting the change state of the level value of the plugging state detection pin;
and when the level value of the plugging state detection pin is changed from high level to low level, controlling the power management module to cut off the power supply of the SD card.
5. The method for preventing burning of the SIM card according to claim 1, further comprising:
detecting the effectiveness of the conductive element;
when the conductive unit fails, judging whether a signal output by a plug-pull state detection pin of the SD card is detected or not;
if not, controlling the power management module to disconnect the power of the SD card.
6. The method for preventing burning of the SIM card according to claim 4 or 5, wherein the detecting the validity of the conductive unit comprises:
detecting an instantaneous current when a power supply pin of the SD card is in contact with the conductive unit;
and when the instantaneous current is smaller than a preset current value, judging that the conductive unit fails.
7. An apparatus for preventing burning of a SIM card, comprising:
the card support is provided with a conductive unit which can be contacted with a power supply pin of the SD card;
the power management module is used for detecting the instantaneous voltage of the SD card and detecting the plugging state of the SD card according to the instantaneous voltage when a power pin of the SD card is contacted with the conductive unit; when the SD card is in a pull-out state, triggering the power management module to disconnect the power of the SD card; wherein,
the power management module is a power management integrated circuit;
and in the process of plugging and unplugging the SD card, a power pin of the SD card is in contact with the conductive unit.
8. The device for preventing burning of the SIM card according to claim 7, wherein the card holder comprises a board body, and a first card slot for placing the SD card and a second card slot for placing at least one SIM card are arranged on the board body;
the plate body used for isolating the first clamping groove from the second clamping groove and facing the power supply pin is provided with the conductive unit;
when the conductive unit is in contact with the power pin, the power pin is short-circuited with a ground pin of the SD card.
9. The device for preventing the burning of the SIM card according to claim 7, wherein the conductive unit is a metal conductive layer, a conductive glass layer or a conductive silica gel strip.
10. A computer device comprising the apparatus for preventing burning of a SIM card according to any one of claims 7 to 9.
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| CN109190745A (en) * | 2018-06-29 | 2019-01-11 | 努比亚技术有限公司 | It is a kind of to avoid burning control circuit, method, terminal and the computer storage medium blocked |
| CN109991507B (en) * | 2019-04-19 | 2021-10-15 | 维沃移动通信有限公司 | Smart card contact detection circuit, method and equipment |
| CN111525939B (en) * | 2020-04-13 | 2021-09-17 | 重庆蓝岸通讯技术有限公司 | SD card protection system and method and protection circuit for multi-card-slot-in-one connector |
| CN111597594A (en) * | 2020-05-15 | 2020-08-28 | 北京星网锐捷网络技术有限公司 | OPS module plug protection device and electronic equipment |
| CN112968712B (en) * | 2021-01-29 | 2022-08-02 | 维沃移动通信有限公司 | Electronic device and control method thereof |
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| CN105893897A (en) * | 2016-03-31 | 2016-08-24 | 努比亚技术有限公司 | Method for avoiding burning of SIM cards |
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