CN2263855Y - Anti-theft alarm for mobile telephone - Google Patents

Abstract

The alarm for preventing theft of mobile telephone is composed of polarity converting circuit, telephone number transmitting circuit, automatic code-transmitting delay circuit, signal amplifier circuit, identification and judgment circuit, alarm self-locking circuit and power supply. The method can prevent the illegal mobile phone from being used and ensure the legal rights and interests of the owner.

Description

The anti-alarm of usurping of mobile phone

The utility model relates to warning device, relates in particular to the anti-alarm of usurping of mobile phone.

Along with the development of modern communications technology, the universal use of mobile phone brings great convenience for people's life, work.But some lawless persons usurp other people Mobile Directory Number, the illegal use, and the machine master of making pays dues and increases, and causes economically heavy losses not only for legal machine master, and has influenced the normal use of legal machine.Also there is not now a kind of machine master can detect my whether stolen instrument of mobile phone voluntarily on the market.

The purpose of this utility model is to provide a kind of use that can in time detect illegal mobile phone, informs that legal machine master effectively prevents illegal mobile phone to continue the anti-alarm of usurping of mobile phone that uses.

The purpose of this utility model is achieved in that it is by polarity switching, the telephone number transtation mission circuit that has redialing function, automatic signaling delay circuit, signal amplification circuit, the identification decision circuitry, warning latching circuit and power supply constitute, it makes the telephone number transtation mission circuit be connected with outside line by polarity switching, automatically the signaling delay circuit is controlled the telephone number transtation mission circuit sends telephone number from detected mobile phone to outside line automatically, and control signal amplifying circuit and the charged work of identification decision circuitry, after telephone number sends, after amplifying, the various signal identification sounds that signal amplification circuit is feedback the post office switch input to the identification decision circuitry, the identification decision circuitry can judge whether usurp the work of machine situation control warning latching circuit according to the back coupling sound, under legal machine master shutdown situation, when the back coupling sound is busy tone or howler tone, illustrated that the machine of usurping exists, identification decision circuitry output high level, control warning latching circuit self-locking alarm is up to pressing reset switch, do not find to usurp machine, automatically the signaling delay circuit is controlled each outage, enters next sense cycle automatically.Automatically the signaling delay circuit is made up of oscillating circuit and time-delay output circuit and dial relay, the oscillating circuit control detection cycle, the time-delay of time-delay output circuit control telephone number transtation mission circuit redials and to avoid Lou sign indicating number, power cathode connects public ground, the positive supply input of positive source latching circuit taking alarm, the positive source also normally-closed contact of the latching relay adhesive switch by being arranged on the warning latching circuit connects the positive supply input of the oscillating circuit of automatic signaling delay circuit, the output of oscillator connects the time-delay output circuit respectively, signal amplification circuit, the positive supply input of identification decision circuitry, between the output of oscillator and public ground, be connected to the conversation relay, the negative pole of output end of the polarity switching that is communicated with outside line connects public ground, positive pole links to each other with little power supply pin of telephone number transtation mission circuit, the normally opened contact of anodal also process dial relay adhesive switch is connected with the stimulus part of telephone number transtation mission circuit and signal amplification circuit, two outputs of time-delay output circuit link to each other with the input and output pin of number repetition, whether stolen the output of the signal amplification circuit identification decision circuitry input with discerning mobile phone link to each other, the control end of the output latching circuit taking alarm of identification decision circuitry.

The identification decision circuitry is by 450Hz audio frequency decision circuitry, shaping amplification circuit, delay circuit, constitute with door and counter, the input of 450Hz audio frequency decision circuitry promptly is the input of identification decision circuitry, connect shaping amplification circuit behind its output, the output of shaping amplification circuit divides two-way, one the tunnel connects the delay circuit control end behind the paraphase differential amplifier circuit, another road of the output of delay circuit and shaping amplification circuit output connects two inputs with door respectively, connect the input of counter with gate output terminal, the output of counter is the output of identification decision circuitry.

450Hz audio frequency decision circuitry is made of phase-locked loop audio coding integrated package and peripheral Resistor-Capacitor Unit in the identification decision circuitry, shaping amplification circuit is made of the two-stage amplifying circuit that two triodes and current-limiting resistance constitute, and the current collection of back one triode is the output of shaping amplification circuit very.The paraphase differential amplifier circuit is made of phase inverter and differential amplifier circuit two parts, phase inverter is made of phase-reversing tube and two current-limiting resistances, wherein the base stage current-limiting resistance connects the base stage of phase-reversing tube, the collector electrode current-limiting resistance connects between the power positive end of collector electrode and identification decision circuitry, grounded emitter.Differential amplifier circuit is made of differential circuit and the NPN amplifier tube that resistance, electric capacity constitute, the collector electrode of differential circuit input termination phase-reversing tube, and the base stage of output termination amplifier tube, the amplifier tube grounded emitter, current collection is the output of this differential amplifier circuit very.Delay circuit is made of time-base circuit integrated package and timing resistor and timing capacitor, timing greater than 0.4 second less than between 0.7 second.Constitute by the amplifying circuit that isolating diode and two amplifier tubes and resistance constitute with door, the base stage of the anodal last amplifier tube of isolating diode, the output that its negative pole connects delay circuit for an input of door, the current-limiting resistance of the base stage of the last amplifier tube of one termination, the output conduct of another termination shaping amplification circuit of its resistance and another input of door, counter is made of decade counter integrated package and peripheral Resistor-Capacitor Unit, and counter can be exported high level after the pulse above three pin is an output.

Automatically be sense cycle oscillating circuit its cycle of oscillation of signaling delay circuit, and the time-delay output circuit is made of delay circuit and output circuit, and output circuit is made of current-limiting resistance, switch, differential circuit and triode.

Use this mobile phone to prevent usurping alarm, closed mains switch can detect automatically, will report to the police automatically in case detect the use of illegal mobile phone, till the machine master is resetted releasing, can ensure machine master's legitimate rights and interests.

Below in conjunction with accompanying drawing the utility model is specifically described.

Fig. 1 is the anti-theory diagram of usurping alarm of mobile phone.

Fig. 2 is the anti-line construction schematic diagram of usurping alarm of mobile phone.

Fig. 3 usurps the integrated package structure principle chart of identification decision circuitry in the alarm for mobile phone is anti-.

With reference to Fig. 1, Fig. 2, Fig. 3, this utility model mainly is made of polarity switching 1, telephone number transtation mission circuit 2, automatic signaling delay circuit 3, signal amplification circuit 4, identification decision circuitry 5, warning latching circuit 6 and power supply 7, and signaling delay circuit 3 is made of oscillating circuit and time-delay output circuit automatically.Power supply 7 can be used direct current supply, also can be with obtaining after civil power step-down, rectification, filtering, the voltage stabilizing, and this circuit is that civil power reduces after rectifier diode D through power transformer B ₉-D ₁₂After the rectification, capacitor C ₁₉Filtering is through triode Q ₉, resistance R ₂₈, voltage-stabiliser tube DW ₂Connect capacitor C after the voltage stabilizing again ₁₈Filtering obtains, and power cathode connects public ground, and positive source is through latching relay J _K2Adhesive switch J _K2-1Normally-closed contact be oscillating circuit power supply in the automatic signaling delay circuit 3, oscillating circuit is by the time-base circuit ic chip ₃And capacitor C ₈, resistance R ₁₆, resistance R ₁₇, diode D ₇, diode D ₈Constitute the time-base circuit ic chip ₃Can select NE555 or other company's product for use, electric capacity, resistance are timing element, change resistance R ₁₆, R ₁₇Resistance can change 3 pin output high level and the low level time of time-base circuit NE555 respectively, can get respectively 36 seconds and 10 seconds, and sum of the two is a sense cycle, the output of 3 pin of time-base circuit NE555 connects the positive supply input of time-delay output circuit, signal amplification circuit, this three part of identification decision circuitry respectively, and also is connected to the conversation relay J between itself and public ground _K1, with the conversation relay J _K1And the filter capacitor C in addition that connects ₉With backflow diode D ₆And after the serial connection again and meet current-limiting resistance R on it ₁₅With luminous tube LED ₁, luminous tube LED ₁For detecting indicator light, the delay circuit of signaling delay circuit 3 is by time-base circuit IC automatically ₂And timing element resistance R ₁₄And capacitor C ₇Constitute same IC ₂Can select NE555 for use, this delay circuit can fix on time-delay after 5 seconds, and 3 pin output high level connects by resistance R behind 3 pin ₁₃, K switch ₂, capacitor C ₆, resistance R ₁₂, triode Q ₅The output circuit that constitutes, triode Q ₅The button that redials that replaces dial-up circuit.Polarity switching 1 is by rectifier diode D ₁-D ₄Constitute, the outside line of answering the call of its input, negative pole of output end connects public ground, and little feeder ear of the anodal number transtation mission circuit of directly answering the call on the one hand is on the other hand through the conversation relay J _K1Adhesive switch J _K1-1The normally opened contact number transtation mission circuit 2 of answering the call, and be connected with the stimulus part of signal amplification circuit, telephone number transtation mission circuit 2 is by number ic chip of sending out of band redialing function ₁And peripheral cell and dial formation, this number ic chip ₁That select for use is HM91510A, K switch ₁Be the pulse double-tone number of taking place frequently change over switch, IC ₁12 pin, 13 pin can export pulse and double-tone respectively frequently, the collector and emitter that 4 pin and 18 pin meet triode Q5 respectively is used to realize redialing function.Signal amplification circuit 4 is by two triode Q ₆, Q ₇And the two-stage ac amplifier circuit of peripheral Resistor-Capacitor Unit formation, by collector electrode current-limiting resistance R ₂₀, emitter current-limiting resistance R ₂₁, base biasing resistor R ₁₉And triode Q ₆Form previous stage and amplify, equally by resistance R ₂₃, R ₂₄, R ₂₂And triode Q ₇Form the back one-level and amplify coupling capacitance C ₁₂Be connected previous stage triode Q ₆Collector electrode and back one-level triode Q ₇Between the base stage, the conversation relay J _K1Adhesive switch J _K1-1The rear end 2 and triode Q of normally opened contact ₆Be connected with by resistance R between the base stage ₁₈And capacitor C ₁₀, C ₁₁The signal input circuit that constitutes, identification decision circuitry 5 is by integrated circuit I _C4And capacitor C ₁₄, C ₁₅, C ₁₆With adjustable resistance W ₁Constitute, its signal input pin 2 is triode Q with the output pin of signal amplification circuit 4 ₇Collector electrode connect coupling capacitance C ₁₃, make the signal after the amplification be input to identification decision circuitry 5.Adjust adjustable resistance W ₁Value the signal of 450Hz is passed through, avoid other signal to cause misoperation.The interaction energy of identification decision circuitry 5 be no more than continuous time be set in a certain timing between 0.4 second to 0.7 second the 450Hz signal this part get occurred several times in the electric 36 seconds time after, high level can appear in 8 pin, 9 pin of this circuit, thereby warning latching circuit 6 is reported to the police.Warning latching circuit 6 is by resistance R ₂₅-R ₂₇, triode Q ₈, latching relay J _K2, news Chinese percussion instrument Y and LED ₂Constitute, work as ic chip ₄8,9 pin output high level after capacitor C ₁₇Filtering, resistance R ₂₅Be input to triode Q after the current limliting ₈Base stage makes its conducting, thus latching relay J _K2Get electric adhesive, make relay adhesive switch J _K2-1Normally opened contact 1,3 between closed, news Chinese percussion instrument Y gets electric work, the indication diode (LED) of reporting to the police ₂Light, power supply is through resistance R simultaneously ₂₆Give triode Q ₈Base stage power supply keeps its conducting state to realize self-locking, has only just can make to report to the police behind the disconnecting power switch to stop.

Identification decision circuitry 5 is by 450Hz audio frequency decision circuitry, shaping amplification circuit, delay circuit, constitute with door and counter.450Hz audio frequency decision circuitry is by phase-locked loop audio coding ic chip _4-1, capacitor C ₁', C ₂', C ₁₄' and resistance R ₁' and adjustable resistance W ₁Constitute ic chip _4-1Select LM567 for use, its 3 pin is a signal input part, just discerns input 2 pin of decision circuitry 5, capacitor C ₁₄, adjustable resistance W1 determines its centre frequency, transfers W ₁Value make centre frequency at 450Hz, like this, only at IC _4-13 pin inputs 450Hz signal the time its output pin 8 pin be low level, other the time 8 pin output high level.IC _4-18 pin level through diode D ₁' output, capacitor C ₁₅Filtering is after resistance R ₂' be input to by triode T ₁, T ₂And resistance R ₃', R ₄', R ₅The shaping amplification circuit of ' formation, signal are exaggerated the back from triode T ₂Collector electrode output, output divides a two-way, the one tunnel connects by triode T ₃And resistance R ₆' and R ₈' paraphase, capacitor C ₃' and resistance R ₉' differential, triode T ₄Amplify the paraphase differential amplifier circuit that this three part constitutes, its output is triode T ₄Collector electrode connect the control end of delay circuit, delay circuit is by the time-base circuit ic chip _4-2And timing resistor R ₁₃' and timing capacitor C ₄' constitute, select R ₁₃' and C ₄' value, timing is chosen in 0.6 second, IC _4-2Select NE555,2,6 pin merge point and are control end, 3 pin for output as with an input of door, with door by isolating diode D ₂' and by two amplifier tube T ₅, T ₆And resistance R ₁₀', R ₁₁The amplifying circuit of ' formation constitutes, isolating diode D ₂' positive pole meets last amplifier tube T ₅Base stage, negative pole meets IC _4-23 pin.The second tunnel of shaping amplification circuit output is with triode T ₂Collector electrode pass through resistance R ₇' meet triode T ₅Base stage as with another input of door, with the output of door be from triode T ₆Collector electrode be drawn out to the pulse input end of counter, counter is by the decade counter ic chip _4-3And resistance R ₁₄', capacitor C ₅' constitute IC _4-3Select CD4017 for use, select the purpose of counter to be to be allowed to condition to receive in the sense cycle outwards output after several pulses for use, avoid misoperation, select IC in this circuit _4-35,6 pin be output pin, also be identification decision circuitry 5 output pin 8,9 pin.In sum, the effect of this identification decision circuitry 5 is exactly in a sense cycle, this partial circuit got in electric 36 seconds, receive that the 450Hz sine wave signal is no more than 0.6 second continuous time, after receiving that this signal is more than 5 times, the output pin 8 of identification decision circuitry 5,9 pin output high level control self-locking alarm circuit 6 is reported to the police, disconnected again howler tone is reported to the police after and ringing 0.4 second at the busy tone of receiving 0.35 second interval that the post office switch is feedback like this, thereby behind legal machine-operated machine, shut down again after illegal parallel operation is being used this mobile phone or received ring and report to the police under the both of these case, thereby detected the machine situation of usurping.

Parameter is selected: R ₁=3M; R ₂=5.6; R ₃=R ₄=100K; R ₅=2.2K; R ₆=100K; R ₇=5.6K; R ₈=62 Ω; R ₉=2.2K; R ₁₀=10K; R ₁₁=100K; R ₁₂=10K; R ₁₃=5.6K; R ₁₄=100K; R ₁₅=3K; R ₁₆=56K; R ₁₇=360K; R ₁₈=2.4K; R ₁₉=56K; R ₂₀=1.2K; R ₂₁=220 Ω; R ₂₂=280K; R ₂₃=470 Ω; R ₂₅=3K; R ₂₆=5.6K; R ₂₇=3K; R ₂₈=3K; C ₁=47 μ; C ₂=0.01 μ; C ₃=C ₄=30P; C ₅=0.05 μ; C ₆=100 μ; C ₇=4.7 μ; C ₈=100 μ; C ₉=100 μ; C ₁₀=0.1 μ; C ₁₀=0.1 μ; C ₁₁=0.05 μ; C _L2=1 μ; C ₁₃=0.05 μ; C ₁₄=0.1 μ; C ₁₅=22 μ; C ₁₆=0.01 μ; C ₁₇=47 μ; C ₁₈=100 μ; C ₁₉=220 μ; Crystal oscillator X=3.58MHz; Diode D ₁～D ₁₂Be 1N4007; Voltage stabilizing didoe DW ₁=3.9V; DW ₂=8.1V; Triode Q ₁Be 2N5401; Q ₂, Q ₃Be 2N5551; Q ₄～Q ₈Be 9014; Relay J K ₁, JK ₂Select 4098 of 7.5V for use; Direct current audio communication alarm Y selects 7.5V's for use.

R ₁'=3K; R ₂'=3K; R ₃'=5.6K; R ₄'=3K; R ₅'=30 Ω; R ₆'=3K; R ₇'=3K; R ₈'=1.5K; R ₉'=5.6K; R ₁₀'=5.6K; R ₁₁'=3K; R ₁₂'=30 Ω; R ₁₃'=560K; R ' ₁₄=100K; C ₁'=2.2 μ; C ₂'=1 μ; C ₃'=0.1 μ, C ₄'=1 μ; C ₅'=0.1 μ; Triode T ₁～T ₆Be 3DG ₆Diode D ₁', D ₂' be 1N4148.

The course of work: polarity switching is inserted outside line, behind the closed mains switch, IC ₃About 36 seconds high level of 3 pin output, relay J _K1Get electric work with adhesive switch J _K1-1Closure makes 1,2 closures, detects indicator light LED this moment ₁Luminous, cut-off switch K ₂, Closing Switch K again behind the input Mobile Directory Number that will detect ₂, the number input finishes, and the number input will be finished in 36 seconds.The signal that outside line feeds back is through capacitor C ₁₁Coupling is sent into IC after signal amplification circuit 4 amplifies ₄The 2nd pin, judge through the identification of identification decision circuitry 5, if number is stolen, connect warning latching circuit sound and light alarm, if detect less than usurping the machine situation, the dormant state that enters 10 seconds after 36 seconds, IC ₃3 pin low levels, J _K1Outage; After 10 seconds, IC ₃3 pin enter 36 seconds high level states again, this moment relay J _K1Electric again, J _K1-1Adhesive makes 1,2 closures, IC ₃Delaying time, its 3 pin output high level makes triode Q after 5 seconds ₅Tested plane No. sign indicating number is sent in conducting, carries out the second time and detects, and repeats the above-mentioned course of work successively.

Claims (4)

1, the anti-alarm of usurping of a kind of mobile phone, it is characterized in that: it is made of polarity switching (1), the telephone number transtation mission circuit (2) that has redialing function, automatic signaling delay circuit (3), signal amplification circuit (4), identification decision circuitry (5), warning latching circuit (6) and power supply (7), and signaling delay circuit (3) is by oscillating circuit and delay time output circuit and dial relay (J automatically _K1) form, power supply (7) negative pole connects public ground, the anodal latching circuit taking alarm of power supply (7) (6) positive supply input, and power supply (7) is anodal also by being arranged on the latching relay (J of warning latching circuit _K2) adhesive switch (J _K2-1) normally-closed contact connect the positive supply input of the oscillating circuit in the automatic signaling delay circuit (3), the output of oscillating circuit connects the positive supply input of time-delay output circuit, signal amplification circuit (4), this three part of identification decision circuitry (5) respectively, also is connected to the relay (J that converses between the output of oscillating circuit and public ground _K1), the negative pole of output end of polarity switching (1) connects public ground, and positive pole directly links to each other with little power supply pin of telephone number transtation mission circuit (2), and positive pole also passes through dial relay (J _K1) adhesive switch (J _K1-1) normally opened contact is connected with the stimulus part of telephone number transtation mission circuit (2) with signal amplification circuit (4), automatically two outputs of the time-delay output circuit of signaling delay circuit (3) link to each other with the input and output pin of number repetition, whether stolen the output of signal amplification circuit (4) identification decision circuitry (5) input with discerning mobile phone link to each other the control end of the output latching circuit taking alarm (6) of identification decision circuitry (5).

2, the anti-alarm of usurping of mobile phone according to claim 1, it is characterized in that: identification decision circuitry (5) is by 450Hz audio frequency decision circuitry, shaping amplification circuit, delay circuit, constitute with door and counter, the input of 450Hz audio frequency decision circuitry promptly is the input of identification decision circuitry (5), connect shaping amplification circuit behind its output, the output of shaping amplification circuit divides two-way, one the tunnel connects the delay circuit control end behind the paraphase differential amplifier circuit, another road of the output of delay circuit and shaping amplification circuit output connects two inputs with door respectively, connect the input of counter with gate output terminal, the output of counter promptly is the output of identification decision circuitry (5).

3, mobile phone according to claim 2 is anti-usurps alarm, and it is characterized in that: the 450Hz audio frequency decision circuitry in the identification decision circuitry (5) is by phase-locked loop audio coding integrated package (IC _4-1) constitute with peripheral Resistor-Capacitor Unit, shaping amplification circuit is by two triode (T ₁, T ₂) and current-limiting resistance (R ₃', R ₄', R ₅') the two-stage amplifying circuit that constitutes constitutes a back triode (T ₂) the current collection output of shaping amplification circuit very, the paraphase differential amplifier circuit is made of phase inverter and differential amplifier circuit two parts, phase inverter is by phase-reversing tube (T ₃) and two current-limiting resistance (R ₆', R ₈') formation, wherein base stage current-limiting resistance (R ₆') meet phase-reversing tube (T ₃) base stage, collector electrode current-limiting resistance (R ₈') meet phase-reversing tube (T ₃) collector electrode and identification decision circuitry (5) power positive end between, grounded emitter, differential amplifier circuit is by resistance (R ₉') and electric capacity (C ₃') differential circuit and the NPN type amplifier tube (T that constitute ₄) constitute the input termination phase-reversing tube (T of differential circuit ₃) collector electrode, output termination amplifier tube (T ₄) base stage, amplifier tube (T ₄) grounded emitter, current collection is the output of this differential amplifier circuit very, and delay circuit is by time-base circuit integrated package (IC _4-2) and timing resistor (R ₁₃'), timing capacitor (C ₄') constitute, timing greater than 0.4 second less than between 0.7 second, with door by isolating diode (D ₂') and by two amplifier tube (T ₅, T ₆) and resistance (R ₁₀', R ₁₁') amplifying circuit that constitutes constitutes isolating diode (D ₂') positive pole connects the base stage of last amplifier tube (T5), the output that its negative pole connects delay circuit for an input of door, the last amplifier tube (T of a termination ₅) current-limiting resistance (R of base stage ₇'), its another termination shaping amplification circuit output as with another input of door, counter is by decade counter integrated package (IC _4-3) and peripheral resistance (R ₁₄'), electric capacity (C ₅') constitute, counter can be exported high level after the pulse above three pin is an output.

4, according to claim 1 or the anti-alarm of usurping of 2 or 3 described mobile phones, it is characterized in that: automatically be sense cycle oscillating circuit its cycle of oscillation of signaling delay circuit (3), the time-delay output circuit is made of delay circuit and output circuit, and output circuit is by current-limiting resistance (R ₁₃), switch (K ₂), by resistance (R ₁₂) and electric capacity (C ₆) differential circuit and the triode (Q that constitute ₅) constitute.

Images