CN104574793A - Anti-interference mobile phone detector - Google Patents
Anti-interference mobile phone detector Download PDFInfo
- Publication number
- CN104574793A CN104574793A CN201310514253.6A CN201310514253A CN104574793A CN 104574793 A CN104574793 A CN 104574793A CN 201310514253 A CN201310514253 A CN 201310514253A CN 104574793 A CN104574793 A CN 104574793A
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- resistance
- electric capacity
- diode
- resistor
- amplifier
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses an anti-interference mobile phone detector. The anti-interference mobile phone detector comprises a speaker, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a battery, a switch, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a time base chip, a first diode, a second diode, a triode, an amplifier and an antenna. The anti-interference mobile phone detector has a simple structure and good anti-interference performance, and can detect any transmission signals of communication, short messages and videos, even the mobile phone is in a silent mode; once the circuit detects radio frequency transmission signals from a start-up mobile phone, the detector immediately gives voice and light alarms.
Description
Technical field
The present invention relates to a kind of mobile phone detector, particularly relate to a kind of jamproof mobile phone detector.
Background technology
Mobile phone detector is a kind of wireless signal acquisition instrument utilizing mobile phone to carry out cheating etc. for examination hall examination and make.Present mobile phone detector is easy to disturbed, the operating frequency range of mobile communication is two frequency bands, transmission frequency has individual space with accepting between frequency, and common receiving device be utilize mobile phone to send radiowave to determine whether mobile phone, it does not carry out demodulation to its signal.If place empty ripple (only having carrier wave the not have modulation signal) transmitter of the mobile phone channel of middle low power in different orientation, so just have influence on the accuracy of sniffer, but do not affect the normal communication of mobile phone.
Summary of the invention
Object of the present invention is just to provide a kind of jamproof mobile phone detector to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes loudspeaker, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 11 resistance, 12 resistance, 13 resistance, battery, switch, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, 8th electric capacity, 9th electric capacity, time base chip, first diode, second diode, triode, amplifier and antenna, the negative pole of described battery is connected with the first end of described first resistance, the second end of described first resistance simultaneously with the first end of described loudspeaker, the first end of described first electric capacity, the first end of described second electric capacity, the earth terminal of base chip time described, the negative pole of described first diode, the negative pole of described second diode, the first end of described 4th electric capacity is connected with the first end of described 7th resistance, and the second end of described loudspeaker is connected with the level output end of base chip time described, the second end of described first electric capacity simultaneously with the discharge end of base chip time described, time described, the thresholding end of base chip is connected with the first end of described second resistance, second end of described second electric capacity is connected with the control end of base chip time described, the positive pole of described battery is connected with the first end of described switch, second end of described switch is connected with the first end of described 3rd resistance, the second end of described 3rd resistance simultaneously with the second end of described second resistance, the voltage input end of base chip time described, the reset terminal of base chip time described, the first end of described 4th resistance, the first end of described 5th resistance is connected with the first end of described tenth resistance, time described, the trigger end of base chip is connected with the second end of described 4th resistance and the first end of described 3rd electric capacity simultaneously, second end of described 3rd electric capacity is connected with described second end of the 5th resistance and the collector of described triode simultaneously, the emitter of described triode is connected with the positive pole of described first diode and the positive pole of described second diode simultaneously, with the second end of described 4th electric capacity while of the base stage of described triode, the first end of described 6th resistance is connected with the output terminal of described amplifier, the compensation end of described amplifier is connected with the first end of described 9th resistance, second end of described 9th resistance is connected with the first end of described 5th electric capacity, second end of described 5th electric capacity is connected with the dead end of described amplifier, the negative electricity source of described amplifier is connected with the first end of described 8th resistance, the cathode power supply end of described amplifier is connected with the second end of described tenth resistance and the first end of described 12 resistance simultaneously, with the second end of described 6th resistance while of the inverting input of described amplifier, the first end of described 7th electric capacity, the first end of described 8th electric capacity is connected with the first end of described 9th electric capacity, the in-phase input end of described amplifier simultaneously with the first end of described 11 resistance, the first end of described 6th electric capacity, second end of described 12 resistance is connected with the first end of described 13 resistance, the second end of described 8th resistance simultaneously with the second end of described 7th resistance, second end of described 11 resistance, second end of described 6th electric capacity is connected with the second end of described 7th electric capacity, and the second end of described 13 resistance is connected with the second end of described 9th electric capacity, and the second end of described 8th electric capacity is connected with described antenna.
Further, described second diode is light emitting diode.
Beneficial effect of the present invention is:
The present invention examines that structure is simple, and anti-interference is good, can detect the signal transmission of any call, short message and video, even if it is also the same that mobile phone is in silent mode, circuit, once the rf transmission signals from start mobile phone be detected, will send chimes of doom immediately, and light-emitting caution.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the present invention includes loudspeaker Y, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, 8th resistance R8, 9th resistance R9, tenth resistance R10, 11 resistance R11, 12 resistance R12, 13 resistance R13, battery E, switch S, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, 4th electric capacity C4, 5th electric capacity C5, 6th electric capacity C6, 7th electric capacity C7, 8th electric capacity C8, 9th electric capacity C9, time base chip IC 1, first diode D1, second diode D2, triode VT, amplifier IC2 and antenna TX, the second diode D2 is light emitting diode, and the negative pole of battery E is connected with the first end of the first resistance R1, second end of the first resistance R1 simultaneously with the first end of loudspeaker Y, the first end of the first electric capacity C1, the first end of the second electric capacity C2, time base chip IC 1 earth terminal 1, the negative pole of the first diode D1, the negative pole of the second diode D2, the first end of the 4th electric capacity C4 is connected with the first end of the 7th resistance R7, second end of loudspeaker Y with time base chip IC 1 level output end 3 be connected, second end of the first electric capacity C1 simultaneously with time base chip IC 1 discharge end 7, time base chip IC 1 thresholding end 6 be connected with the first end of the second resistance R2, second end of the second electric capacity C2 with time base chip IC 1 control end 5 be connected, the positive pole of battery E is connected with the first end of switch S, second end of switch S is connected with the first end of the 3rd resistance R3, second end of the 3rd resistance R3 simultaneously with second end of the second resistance R2, time base chip IC 1 voltage input end 8, time base chip IC 1 reset terminal 4, the first end of the 4th resistance R4, the first end of the 5th resistance R5 is connected with the first end of the tenth resistance R10, time base chip IC 1 trigger end 2 be connected with second end of the 4th resistance R4 and the first end of the 3rd electric capacity C3 simultaneously, second end of the 3rd electric capacity C3 is connected with second end of the 5th resistance R5 and the collector of triode VT simultaneously, the emitter of triode VT is connected with the positive pole of the first diode D1 and the positive pole of the second diode D2 simultaneously, with second end of the 4th electric capacity C4 while of the base stage of triode VT, the first end of the 6th resistance R6 is connected with the output terminal 6 of amplifier IC2, the compensation end 1 of amplifier IC2 is connected with the first end of the 9th resistance R9, second end of the 9th resistance R9 is connected with the first end of the 5th electric capacity C5, second end of the 5th electric capacity C5 is connected with the dead end 8 of amplifier IC2, the negative electricity source 4 of amplifier IC2 is connected with the first end of the 8th resistance R8, the cathode power supply end 7 of amplifier IC2 is connected with second end of the tenth resistance R10 and the first end of the 12 resistance R12 simultaneously, with second end of the 6th resistance R6 while of the inverting input 3 of amplifier IC2, the first end of the 7th electric capacity C7, the first end of the 8th electric capacity C8 is connected with the first end of the 9th electric capacity C9, the in-phase input end 2 of amplifier IC2 simultaneously with the first end of the 11 resistance R11, the first end of the 6th electric capacity C6, second end of the 12 resistance R12 is connected with the first end of the 13 resistance R13, second end of the 8th resistance R8 simultaneously with second end of the 7th resistance R7, second end of the 11 resistance R11, second end of the 6th electric capacity C6 is connected with second end of the 7th electric capacity C7, and second end of the 13 resistance R13 is connected with second end of the 9th electric capacity C9, and second end of the 8th electric capacity C8 is connected with antenna TX.
It is utilize miniature high frequency radio receiving trap to realize that the present invention detects the mobile phone that open, and it is highly sensitive, and detect frequency range large, anti-interference is good.The frequency of operation of mobile communication is generally 7450KHZ to 8100KHZ, as long as mobile phone opens, will send some radiowave instructions: when mobile phone is just started shooting to relay station always, launches the normal or network validation instruction of open state or acknowledge(ment) signal; Meeting discontinuous transmission identity information and positional information during cell phone standby; Meeting transmitting acknowledgement instruction when mobile phone changes in area; Mobile phone converse, search signal or network, information etc. time all can transmit.The signal transmission of any call, short message and video can be detected by the present invention, even if it is also the same that mobile phone is in silent mode, circuit is once the rf transmission signals from start mobile phone be detected, and loudspeaker Y just sends chimes of doom immediately, and drives the second diode D2 flashing.
Claims (2)
1. a jamproof mobile phone detector, is characterized in that: comprise loudspeaker, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 11 resistance, 12 resistance, 13 resistance, battery, switch, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, 8th electric capacity, 9th electric capacity, time base chip, first diode, second diode, triode, amplifier and antenna, the negative pole of described battery is connected with the first end of described first resistance, the second end of described first resistance simultaneously with the first end of described loudspeaker, the first end of described first electric capacity, the first end of described second electric capacity, the earth terminal of base chip time described, the negative pole of described first diode, the negative pole of described second diode, the first end of described 4th electric capacity is connected with the first end of described 7th resistance, and the second end of described loudspeaker is connected with the level output end of base chip time described, the second end of described first electric capacity simultaneously with the discharge end of base chip time described, time described, the thresholding end of base chip is connected with the first end of described second resistance, second end of described second electric capacity is connected with the control end of base chip time described, the positive pole of described battery is connected with the first end of described switch, second end of described switch is connected with the first end of described 3rd resistance, the second end of described 3rd resistance simultaneously with the second end of described second resistance, the voltage input end of base chip time described, the reset terminal of base chip time described, the first end of described 4th resistance, the first end of described 5th resistance is connected with the first end of described tenth resistance, time described, the trigger end of base chip is connected with the second end of described 4th resistance and the first end of described 3rd electric capacity simultaneously, second end of described 3rd electric capacity is connected with described second end of the 5th resistance and the collector of described triode simultaneously, the emitter of described triode is connected with the positive pole of described first diode and the positive pole of described second diode simultaneously, with the second end of described 4th electric capacity while of the base stage of described triode, the first end of described 6th resistance is connected with the output terminal of described amplifier, the compensation end of described amplifier is connected with the first end of described 9th resistance, second end of described 9th resistance is connected with the first end of described 5th electric capacity, second end of described 5th electric capacity is connected with the dead end of described amplifier, the negative electricity source of described amplifier is connected with the first end of described 8th resistance, the cathode power supply end of described amplifier is connected with the second end of described tenth resistance and the first end of described 12 resistance simultaneously, with the second end of described 6th resistance while of the inverting input of described amplifier, the first end of described 7th electric capacity, the first end of described 8th electric capacity is connected with the first end of described 9th electric capacity, the in-phase input end of described amplifier simultaneously with the first end of described 11 resistance, the first end of described 6th electric capacity, second end of described 12 resistance is connected with the first end of described 13 resistance, the second end of described 8th resistance simultaneously with the second end of described 7th resistance, second end of described 11 resistance, second end of described 6th electric capacity is connected with the second end of described 7th electric capacity, and the second end of described 13 resistance is connected with the second end of described 9th electric capacity, and the second end of described 8th electric capacity is connected with described antenna.
2. jamproof mobile phone detector according to claim 1, is characterized in that: described second diode is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310514253.6A CN104574793A (en) | 2013-10-26 | 2013-10-26 | Anti-interference mobile phone detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310514253.6A CN104574793A (en) | 2013-10-26 | 2013-10-26 | Anti-interference mobile phone detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104574793A true CN104574793A (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310514253.6A Pending CN104574793A (en) | 2013-10-26 | 2013-10-26 | Anti-interference mobile phone detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104574793A (en) |
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2013
- 2013-10-26 CN CN201310514253.6A patent/CN104574793A/en active Pending
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Application publication date: 20150429 |
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| WD01 | Invention patent application deemed withdrawn after publication |