CN109633362A - Intelligent terminal designs circuit, intelligent terminal and intelligent terminal method for detecting short circuit - Google Patents
Intelligent terminal designs circuit, intelligent terminal and intelligent terminal method for detecting short circuit Download PDFInfo
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- CN109633362A CN109633362A CN201910092612.0A CN201910092612A CN109633362A CN 109633362 A CN109633362 A CN 109633362A CN 201910092612 A CN201910092612 A CN 201910092612A CN 109633362 A CN109633362 A CN 109633362A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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Abstract
The present embodiments relate to intelligent terminal technical fields, disclose a kind of intelligent terminal design circuit, the SIM card of the intelligent terminal includes at least two adjacent the first pins and second pin, first pin is connected with the first input end of the intelligent terminal central processing unit, the second pin is connected with the second input terminal of the intelligent terminal central processing unit, it is characterized in that, the design circuit includes: the comparison module being respectively connected with the third input terminal of the second pin and the central processing unit, first input port of the comparison module is connected with the second pin, second input port of the comparison module is grounded, the delivery outlet of the comparison module is connected with the third input terminal of the central processing unit；When the design circuit works, input pull-up is set by the first input end, input drop-down is set by second input terminal, determines whether the pin of the intelligent terminal SIM card is short-circuit by the level change of the third input terminal.
Description
Technical field
The present embodiments relate to intelligent terminal technical field, in particular to a kind of intelligent terminal design circuit, intelligence are eventually
End and intelligent terminal method for detecting short circuit.
Background technique
No matter intelligent terminal is conversed such as smart phone development how and the increase of function and is still used as intelligent terminal
Most basic function has the function of can not be substituted, and call most will not top-priority function as the most basic function and user
Can, if once the function goes wrong, it will be most fatal for users.
Generally, call function goes wrong, and most probable problem may be to fall card, after falling card, then can not connect net
Network, call will not know where to begin yet.There are two types of the reason of usually falling card:
1.SIM card ontology is abnormal；2. mobile phone terminal sim card slot is abnormal.
For SIM card ontology exception common problem encountered is that the pin short circuit of SIM card, usual this pin short circuit user are difficult to send out
Existing, needing to block to pull out can be found using multimeter measurement.Can not conversing for SIM card body short appearance is asked
Topic, it is common practice to which user can carry out after-sales service by the after-sales service point of mobile phone.Such after-sales service method does not refer to
The reference judgement got well of family, usual adjacent leads short circuit problem are tieed up which increase user and after sale without after-sales service
The burden repaired operates very troublesome.Therefore it provides a kind of scheme of new discovery SIM card pin short circuit is necessary.
Summary of the invention
Embodiment of the present invention is designed to provide intelligent terminal design circuit, intelligent terminal and intelligent terminal short circuit inspection
Survey method allows user to determine the phase of intelligent terminal SIM card according to the level change situation of the interface display of intelligent terminal
Even whether pin is short-circuit.
In order to solve the above technical problems, embodiments of the present invention provide a kind of intelligent terminal design circuit, comprising:
The SIM card of the intelligent terminal includes at least two adjacent the first pins and second pin, first pin
It is connected with the first input end of the intelligent terminal central processing unit, the second pin and the intelligent terminal central processing unit
The second input terminal be connected, which is characterized in that the design circuit includes:
The comparison module being respectively connected with the third input terminal of the second pin and the central processing unit, the comparison
First input port of module is connected with the second pin, the second input port ground connection of the comparison module, the comparison module
Delivery outlet be connected with the third input terminal of the central processing unit；
When the design circuit works, input pull-up is set by the first input end, second input terminal is set
It is set to input drop-down, determines whether the pin of the intelligent terminal SIM card is short by the level change of the third input terminal
Road.
Wherein, the comparison module is specially a comparator.
Wherein, the intelligent terminal central processing unit further include: the 4th input terminal；
4th input terminal is connected with the first input port of the second pin and the comparator respectively.
Wherein, the first input end, second input terminal, the third input terminal, the 4th input terminal are
General input/output interface.
Wherein, first pin, second pin be respectively the VCC pin, RST pin, CLK pin, GND pin,
Two adjacent leads in VPP pin, DATA pin.
Embodiments of the present invention additionally provide a kind of intelligent terminal, including intelligent terminal described in any of the above embodiments design
Circuit.
Embodiments of the present invention additionally provide a kind of intelligent terminal method for detecting short circuit, and the intelligent terminal includes any
Intelligent terminal described in designs circuit；The method also includes:
The level for detecting the central processing unit third input terminal, according to the level detected, output mentions accordingly
Show signal to user.
Wherein, the level that the basis detects exports corresponding standby signal to user, comprising:
If described, detect is high level, by interface output short-circuit standby signal to user.
Embodiments of the present invention additionally provide a kind of intelligent terminal method for detecting short circuit, and the intelligent terminal includes any
Intelligent terminal described in designs circuit；The method also includes:
Detect the level of the central processing unit third input terminal and the 4th input terminal；
According to the level of the third input terminal and the 4th input terminal that detect, corresponding prompt letter is exported
Number give user.
Wherein, according to the level of the third input terminal and the 4th input terminal that detect, output is corresponding
Standby signal is to user, comprising:
If the third input terminal output is low level, and the 4th input terminal output is low level, then passes through
Interface exports the standby signal that short circuit does not occur to user.
Embodiment of the present invention is in terms of existing technologies, whole due in an intelligent terminal, devising connection intelligence
The SIM card at end and the design circuit of intelligent terminal central processor CPU.The design circuit, comprising: with second pin and centre
The comparison module that reason device CPU is separately connected, the comparison module are specifically as follows a comparator.First input port of the comparator with
Second pin is adjacent, and the second input port ground connection of the comparator, the delivery outlet of the comparator and the third of central processor CPU are defeated
Enter end to be connected.When the design circuit works, input pull-up is set by first input end, sets defeated for second input terminal
Enter drop-down.Then by detect third input terminal level change come judge the intelligent terminal SIM card adjacent leads whether
Short circuit phenomenon occurs, and by interface, whether the signal prompt of short circuit will occur is shown to user, avoid and use in the prior art
Family needs to remove bring troublesome operation when mobile phone card goes to test whether short circuit by multimeter, improves experience.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the circuit diagram being connect according to SIM card in the prior art with central processing unit；
Fig. 2 is the schematic diagram of the design circuit of first embodiment according to the present invention；
Fig. 3 is the equivalent circuit diagram of the design circuit of first embodiment according to the present invention；
Fig. 4 is the flow diagram of the method for detecting short circuit of second embodiment according to the present invention；
Fig. 5 is the flow diagram of the method for detecting short circuit of third embodiment according to the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present invention
In formula, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical details
And various changes and modifications based on the following respective embodiments, the application technical solution claimed also may be implemented.
Before a specific embodiment of the invention is discussed in detail, first to the intelligent terminal prior art relevant to SIM card
Do simple introduction.
As shown in Figure 1, shown in FIG. 1 is the universal design of current cell phone mainboard side, central processor CPU controls SIM card
Each road signal, and communication protocol is carried out, therefore, it is determined that the identification success of SIM card must when SIM card is inserted into mobile telephone SIM card slot
Can so there be Frictional Slipping, so that the short-circuit probability of adjacent signals foot appearance of SIM card ontology is high, such as VCC-RST, RST-
CLK etc., 6 signal pins of SIM card short-circuit risks can occur with adjacent signals foot.Since the presence of short circuit necessarily will appear communication
Failure, once determine communication failure, mobile phone just cisco unity malfunction, such as cannot converse.
To solve the problem of that the adjacent leads short circuit user of SIM card in the prior art is difficult discovery, the embodiment of the present invention is mentioned
A kind of intelligent measurement smart phone SIM card short circuit scheme is gone out, as long as mobile phone card insertion mobile phone terminal can show SIM on interface
Whether card has short circuit, timely to remind user mobile phone card short circuit occur, needs to carry out the replacement of mobile phone card, has given up using
Family is thought as the doubt that mobile phone goes wrong, and preferably user is guided to repair.
In the following, will be carried out to the scheme of detection intelligent terminal SIM card short circuit of the invention detailed by specific embodiment
It introduces.
As described above, intelligent terminal provided in an embodiment of the present invention, SIM card includes multiple pins, such as VCC pin, RST
Pin, CLK pin, GND pin, VPP pin, DATA pin.When SIM card is inserted into mobile telephone SIM card slot, there will necessarily be friction
Sliding, so that the short-circuit probability of adjacent signals foot appearance of SIM card ontology is high, such as VCC-RST, RST-CLK, due to
6 signal pins of SIM card short-circuit risks can occur with adjacent signals foot, in order to preferably explain that scheme herein, the present invention are real
Example is applied to be illustrated and distinguish with the first pin, second pin.Wherein, the first pin, second pin are adjacent, and are respectively
VCC pin, RST pin, CLK pin, GND pin, VPP pin, two adjacent leads in DATA pin.Such as, the first pin
It is CLK adjacent thereto for RST, second pin.Alternatively, the first pin is VCC pin, second pin is RST pin.Wherein,
First pin of SIM card is connected with the first input end of intelligent terminal central processor CPU, and adjacent with first pin second
Pin is adjacent with the second input terminal of central processor CPU.The first input end, the second input terminal may each be central processing unit
CPU general input/output interface.
In the intelligent terminal, the design of SIM card and intelligent terminal central processor CPU including a connection intelligent terminal
Circuit.Specifically, the design circuit, comprising:
The comparison module being separately connected with second pin and central processor CPU, the comparison module are specifically as follows a ratio
Compared with device.First input port of the comparator is adjacent with second pin, the second input port of comparator ground connection, the comparator it is defeated
Outlet is connected with the third input terminal of central processor CPU.When the design circuit works, set first input end in input
It draws, sets input drop-down for second input terminal.Then the intelligence is judged by detecting the level change of third input terminal
Whether the adjacent leads of the SIM card of energy terminal occur short circuit phenomenon.
In order to preferably explain the technical solution of this hair inventive embodiments, below be RST with the first pin, second pin is
It is illustrated for CLK pin adjacent thereto.
As shown in Fig. 2, being the schematic diagram of the design circuit of the embodiment of the present invention.
In Fig. 2, RST pin (the first pin) the connection intelligent terminal central processor CPU of intelligent terminal SIM card
GPIO-3 (first input end), the GPIO-3 of CLK pin (second pin) the connection intelligent terminal central processor CPU of SIM card
(the second input terminal).The positive power source terminal (the first input port) of comparator connects RST pin, and (second is defeated for the negative power end of comparator
Entrance) connection GND (ground connection).GPIO-11 (the third input of the output end connection intelligent terminal central processor CPU of comparator
End).
When the design circuit work of the embodiment of the present invention, set the end GPIO-3 of central processing unit side to by software end
GPIO-4 is set input drop-down by input pull-up.If short circuit occurs in SIM card ontology, when card insertion enters mobile phone terminal, mobile phone is soft
Part can go to be communicated with SIM card, since the presence (RST pin and CLK pin short circuit) of short circuit necessarily will appear communication failure,
Once determining communication failure, the corresponding equivalent circuit diagram of circuit diagram shown in Fig. 2 is Fig. 3 at this time.
In Fig. 3, due to RST and CLK short circuit, bleeder circuit will be formed with input pull-up and input drop-down, to make
It obtains the end VP and obtains certain voltage value, which is input to comparator and comparator is made to export high potential, the output level
Phone is input to central processor CPU side by GPIO-11, and CPU side obtains the level of the variation, and cell phone software can be according to this
Variation is shown on interface, informs that short circuit occurs in your mobile phone card of user, and provide maintenance guide measure.Pass through inspection in this way
The variation for surveying the level of GPIO-11 input terminal, that is, can determine whether SIM card occurs, and avoids user in the prior art and needs to take
Bring troublesome operation when lower mobile phone card goes to test whether short circuit by multimeter, improves experience.
Further to promote circuit reliability, in an intelligent terminal at central processor further include: the 4th input terminal；Described
Four input terminals are connected with the second pin and first input port respectively.4th input terminal is set to CPU side, it is therefore an objective into
Judgement of the row RST and CLK without short circuit, increases circuit reliability, once short circuit can be so that software carry out knowing card operation again.
It is that specific description is done by Fig. 2 further below.
In Fig. 2, the GPIO-22 (the 4th input terminal) of the CPU side positive electricity with CLK pin (second pin) and comparator respectively
Source (the first input port) connection.If short circuit does not occur for RST and CLK, at this point, due to configuration CLK input drop-down, then
GPIO-22 will obtain low potential, so that judgement is not short-circuit, increase circuit reliability, once short circuit can be so that not soft
Part carries out knowing card operation again.
To sum up, by the variation of GPIO-11 (third input terminal) and the current potential of GPIO-22 (the 4th input terminal), can sentence
Whether short-circuit determine RST and CLK.
It should be noted that the narration of above-mentioned concrete scheme is only using CLK and RST as one of short-circuit risks,
His adjacent signals foot short circuit design and the narration scheme are completely the same, only increase cabling, pass through this programme
Determine whether the SIM card ontology that user uses short circuit occurs so as to cause card is failed to see.I other words the intelligence of the embodiment of the present invention is eventually
End, may include above-mentioned multiple design circuits, and the adjacent leads design scheme of each design circuit is identical.Through the above scheme
Narration, that is, can determine whether the adjacent leads of SIM card are short-circuit, and when short circuit occur in the adjacent leads of SIM card, in user interface
Inform that user, the design are more close to the users, preferably help user solves practical problem.
Based on intelligent terminal design circuit disclosed above and intelligent terminal, the present invention further provides intelligent terminal short circuits
Detection method, as shown in figure 4, this method comprises:
401, detect the level of the central processing unit third input terminal.
402, according to the level detected, corresponding standby signal is exported to user.
In step 401 and 402, after according to design circuit design intelligent terminal disclosed above, due to passing through software
The end GPIO-3 of central processing unit side is set input pull-up by end, sets input drop-down for GPIO-4.The intelligent terminal work
When making, if the first pin and second pin appearance short circuit (RST pin and CLK pin short circuit), obtain the end VP centainly
Voltage value, the voltage value are input to comparator and comparator are made to export high potential, and the phone of the output level is defeated by GPIO-11
Enter to central processor CPU side.At this point, detecting the electricity of the central processing unit GPIO-11 (third input terminal) by step 401
Flat variation, and can be judged whether that short circuit occurs according to level change.Specifically, if detect GPIO-11 input is high
Level, then short circuit occurs for specification RST pin and CLK pin, at this time by software interface output short-circuit standby signal to user.
Based on intelligent terminal design circuit disclosed above and intelligent terminal, the present invention further provides intelligent terminal short circuits
Detection method, as shown in figure 5, this method comprises:
501, detect the level of the central processing unit third input terminal and the 4th input terminal；
502, according to the level of the third input terminal and the 4th input terminal that detect, output mentions accordingly
Show signal to user.
In step 501 and 502, after according to design circuit design intelligent terminal disclosed above, due to passing through software
The end GPIO-3 of central processing unit side is set input pull-up by end, sets input drop-down for GPIO-4.The intelligent terminal work
When making, if the first pin and second pin appearance short circuit (RST pin and CLK pin short circuit), obtain the end VP centainly
Voltage value, the voltage value are input to comparator and comparator are made to export high potential, and the phone of the output level is defeated by GPIO-11
Enter to central processor CPU side.At this point, detecting the electricity of the central processing unit GPIO-11 (third input terminal) by step 401
Flat variation, and can be judged whether that short circuit occurs according to level change.Specifically, if detect GPIO-11 input is high
Level, then short circuit occurs for specification RST pin and CLK pin, at this time by software interface output short-circuit standby signal to user.
If RST pin and CLK pin short circuit are without short circuit, at this time due to configuration CLK input drop-down, then GPIO-22 is just
Low potential can be obtained, so that judgement is not short-circuit, increases circuit reliability, once short circuit can be so that software not be known again
Card operation.I.e. at this point, GPIO-11 inputs low potential, then judges that SIM card is not short-circuit if GPIO-22 inputs low potential, increase
Circuit reliability, once short circuit can be so that software carry out knowing card operation again.
It will be understood by those skilled in the art that implementing the method for the above embodiments is that can pass through
Program is completed to instruct relevant hardware, which is stored in a storage medium, including some instructions are used so that one
A equipment (can be single-chip microcontroller, chip etc.) or processor (processor) execute each embodiment the method for the application
All or part of the steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of intelligent terminal designs circuit, the SIM card of the intelligent terminal includes at least two adjacent the first pins and the
Two pins, first pin are connected with the first input end of the intelligent terminal central processing unit, the second pin and institute
The second input terminal for stating intelligent terminal central processing unit is connected, which is characterized in that the design circuit includes:
The comparison module being respectively connected with the third input terminal of the second pin and the central processing unit, the comparison module
The first input port be connected with the second pin, the second input port of comparison module ground connection, the comparison module it is defeated
Outlet is connected with the third input terminal of the central processing unit；
When the design circuit works, input pull-up is set by the first input end, sets second input terminal to
Input drop-down, determines whether the pin of the intelligent terminal SIM card is short-circuit by the level change of the third input terminal.
2. intelligent terminal according to claim 1 designs circuit, which is characterized in that the comparison module is specially to compare
Device.
3. intelligent terminal according to claim 1 or 2 designs circuit, which is characterized in that the intelligent terminal central processing
Device further include: the 4th input terminal；
4th input terminal is connected with the first input port of the second pin and the comparator respectively.
4. intelligent terminal according to claim 3 designs circuit, which is characterized in that the first input end, described second
Input terminal, the third input terminal, the 4th input terminal are general input/output interface.
5. intelligent terminal according to claim 3 designs circuit, which is characterized in that first pin, second pin point
It Wei not the VCC pin, RST pin, CLK pin, GND pin, VPP pin, two adjacent leads in DATA pin.
6. a kind of intelligent terminal, which is characterized in that set including at least one intelligent terminal of any of claims 1-5
Count circuit.
7. a kind of intelligent terminal method for detecting short circuit, which is characterized in that the intelligent terminal includes any in claims 1 or 2
Intelligent terminal described in designs circuit；The described method includes:
Detect the level of the central processing unit third input terminal；
According to the level detected, corresponding standby signal is exported to user.
8. method for detecting short circuit according to claim 7, which is characterized in that the level that the basis detects, it is defeated
Corresponding standby signal is to user out, comprising:
If described, detect is high level, by interface output short-circuit standby signal to user.
9. a kind of intelligent terminal method for detecting short circuit, which is characterized in that the intelligent terminal includes any one of claim 3-5
The intelligent terminal designs circuit；The described method includes:
Detect the level of the central processing unit third input terminal and the 4th input terminal；
According to the level of the third input terminal and the 4th input terminal that detect, export corresponding standby signal to
User.
10. method for detecting short circuit according to claim 9, which is characterized in that the third that the basis detects is defeated
The level for entering end and the 4th input terminal, exports corresponding standby signal to user, comprising:
If the third input terminal output is low level, and the 4th input terminal output is low level, then passes through interface
The standby signal that short circuit does not occur is exported to user.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910092612.0A CN109633362A (en) | 2019-01-30 | 2019-01-30 | Intelligent terminal designs circuit, intelligent terminal and intelligent terminal method for detecting short circuit |
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| CN201910092612.0A CN109633362A (en) | 2019-01-30 | 2019-01-30 | Intelligent terminal designs circuit, intelligent terminal and intelligent terminal method for detecting short circuit |
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Application publication date: 20190416 |
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| RJ01 | Rejection of invention patent application after publication |