CN2177637Y - Electronic anti-theft cipher lock for motor vehicle - Google Patents

Abstract

The utility model relates to an electric lock. The utility model forms a codec circuit 1 in the mode that the output ends of the rows and columns of a keyboard are electrically connected with the input end of a central microprocessor ICI. Two ways of the signals outputted by the ICI separately control an ignition control circuit 2 and an alarm control circuit 3 which is composed of triode control relays. The relay connection point is used for controlling the power supply of an alarm circuit 5. The relay connection point of the ignition control circuit 2 controls the control electrodes of the controlled silicon in a cipher-modifying control circuit 4 and an ignition circuit 6. The relay connection point in the cipher-modifying control circuit 4 is connected with the storage control end and the ground lead of IC1 in series. The utility model is suitable for various vehicles.

Description

Electronic anti-theft cipher lock for motor vehicle

The utility model relates to a kind of electronic anti-theft coded lock of self-propelled vehicle.

At present, the electronic password lock development is very fast, particularly give a lot of care to the antikijacking burglar of power actuated vehicle in some developed countries and area, pure mechanical lock by the past develops into present machinery, electronics associating anti-theft column lock, by the Door Lock of past pure develop into afterwards the wheel steering kayser and present ignition system electronic control lock, this indicates that invariably locking industry is making constant progress.But current external automobile-use electronic anti-theft coded lock generally adopts the wireless remote control mode, although the one side of its advance is arranged, yet has various problems simultaneously, one, and it is extremely inconvenient to carry remote controller; Two, there is the shielding problem; Its three because the coding of emitting-receiving system is limited, and be fixed password, the user can not revise, particularly the user is as long as press a key on remote controller, the specific function of just travelling, this lacks the antitheft sense of actv. rather.

The purpose of this utility model is to provide a kind of simple in structure, password figure place and group number many, can revise password, has the strong motor vehicle electronic anti-theft puzzle lock of anti-theft ability.

The utility model is finished with following mode: a kind of motor vehicle electronic anti-theft puzzle lock, the input end that is connect central microprocessor IC 1 by the row and column mouth electricity of keyboard I constitutes coding and decoding circuit 1, exports igniting and warning two-way low level signal respectively to ignition control circuit 2 and alarm control circuit 3 from two mouths of central microprocessor integrated circuit IC1; Ignition control circuit 2 is the collector series relay J2 coils by the aerotron BG2 of bias amplifier, the base stage of aerotron BG2 receives the ignition signal of the IC1 output in the above-mentioned coding and decoding circuit 1, revises control circuit 4 and firing circuit 6 with the contact J2-1 control password of relay J 2; It is by controllable silicon SCR 1 serial connection relay J 3 coils that password is revised control circuit 4, by the control utmost point of the contact J2-1 of above-mentioned relay J 2 serial connection controllable silicon SCR 1, be serially connected between the storage control end and power ground of IC1 in the coding and decoding circuit 1 with the contact J3-1 of relay J 3; Firing circuit 6 is by being serially connected in the vehicle ignition circuit after the controllable silicon SCR 2 serial connection K switch 2, being connected in series the control utmost point of controllable silicon SCR 2 by the contact J2-1 of above-mentioned relay J 2; Alarm control circuit 3 is the collector series relay J1 by the aerotron BG1 of bias amplifier, the alerting signal of the IC1 output in the base stage received code circuit decoding 1 of aerotron BG1, and the contact J1-1 of usefulness relay J 1 connects the power supply of warning circuit 5; Warning circuit 5 by integrated circuit oscillator IC2 electricity connect outer meeting resistance, electric capacity is formed the oscillating circuit that is become high frequency by low frequency modulation, the output high-frequency signal is to the base stage of emitter follower aerotron BG3, with the emitter serial connection loud speaker Y of aerotron BG3.Central microprocessor IC 1 in the coding and decoding circuit 1 is to be made of CMOS integrated circuit TWH9103.The line output end of keyboard I has four lines in the coding and decoding circuit 1, be serially connected with diode D respectively between first row and second row, the third line, the fourth line, keyboard I has three row mouths, and its first row mouth power connection ground wire is formed the decimal system number output signal by the row and column mouth of keyboard I.

The central microprocessor IC1 that the utility model motor vehicle electronic anti-theft puzzle lock adopts is that not only volume is little with the extensive cmos device of TWH9103 type, and static power consumption is low, lie prostrate just energy normal operation of vdc with 3-6, and multiple functional, the privacy degrees height, significance can reach 12, has 10 ²Promptly 1,000,000,000,000 groups of passwords have improved its confidentiality greatly.In addition, this lockset has the password storage function, password modify feature, and auto alarm function, as long as during three input error passwords just with auto alarm one minute.This lock not only is the anti-theft capability that it is stronger, is that also it has anti-preferably misfortune ability.During driving, as long as put alarm control in the state of alert, when three error codes of input, and get final product not according to " NO " key after importing error code for the third time, error code can be one digit number, two figure places etc.Meet when kidnapping in the driving process, disconnect on the one hand the K2(ignition key) (as shown in Figure 4), ignition system is forced flame-out, and " NO " key (as shown in Figure 2) that clicks keyboard I on the other hand just can auto alarm one minute, as long as the hijacker does not know password, can't the restart point ignition system.This lock is present comparatively ideal a kind of motor vehicle electronic anti-theft column lock.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the utility model circuit block diagram;

Fig. 2 is the schematic circuit diagram of coding and decoding circuit 1, ignition control circuit 2, alarm control circuit 3;

Fig. 3 is the schematic circuit diagram of warning circuit 5;

Fig. 4 is the schematic circuit diagram that firing circuit 6 and password are revised control circuit 4.

As shown in Figure 1, the utility model is by coding and decoding circuit 1, ignition control circuit 2, and alarm control circuit 3, firing circuit 6 revises control circuit 4 with password and warning circuit 5 is formed, and dc supply adopts the power supply of online voltage stabilizing charging maintenance-free battery.

As shown in Figure 2, coding and decoding circuit 1 is by the electric respectively input end " 5 " that connects central microprocessor IC 1 of the row and column mouth of keyboard I, " 6 ", " 7 ", " 8 ", with " 10 ", " 11 ", constitute, export ignition control signal and alarm control signal respectively to ignition control circuit 2 and alarm control circuit 3 from the mouth " 17 " of IC1 or " 15 " end, keyboard I is by 10 numeric keys and " * ", " ON " two function keys totally ten two keys are formed, the first row output head grounding of keyboard I, the first line output end is respectively through diode D1, D2, D3 and second, three, the four lines mouth connects, this keyboard I adopts popular in the world in recent years novel thin film switch, attractive in appearance, generous, long service life (greater than 1,000,000 times).Use " * " function key to store when revising password, use " ON " function key to start during igniting.Password is by numerical key input central microprocessor IC1, IC1 is the extensive cmos device of TWH9103 type, connect the oscillating circuit of " 1 " " 18 " end formation IC1 of IC1 by resistance R 1, R3 and meet buzzer phone HD after connect " 9 " " 14 " end of IC1, R3 is a matched resistance, the signal that is input to IC1 with buzzer phone HD indication is effective, capacitor C 1 is attempted by on " 1 " " 2 " end of IC1 for high-frequency filter capacitor, capacitor C 2 connect IC1's " 4 " end and power ground, as the reset terminal of IC1 and the buffer action of ground wire, C3, C5, C18 are power filtering capacitor; When diode D1-D3 is respectively keyboard I output password, four capable input ends " 5 " " 6 " " 7 " " 8 " of control IC1 constitute the decimal system number incoming signal with the level of row input end " 10 " " 11 ", when static state does not have the password input, four capable input ends " 5 " " 6 " " 7 " " 8 " and the row input end " 10 " of IC1 are high level, row input end " 11 " is that the normal opened contact J3-1 of low level relay J3 is the locking cipher switch, be used to revise IC1 internal memory password, and control (as shown in Figure 4) by the controllable silicon SCR 1 that password is revised in the control circuit 4.Storage control end " 13 " end and the power ground that connect IC1 with normal opened contact J3-1, when normal opened contact J3-1 is closed, receiver is opened and is in the password preset condition in the IC1, it is available keyboard I input decimal system number, convert binary code to through decoding, send receiver storage (by keyboard " * " key control), cut-off switch K1, normal opened contact J3-1 is in normally open (as shown in Figure 4), thereby closes the IC1 internal memory.The concrete operations of revising password are as follows: the K1 that closes a switch earlier imports original code, " 17 " pin output low level ignition signal of IC1 then, make aerotron BG2 conducting, relay J 2, the normal opened contact J2-1 adhesive (as shown in Figure 2) of relay J 2, thereby trigger the control utmost point of controllable silicon SCR 1, make it conducting (as shown in Figure 4), the normal opened contact J3-1 closure of relay J 3, storage control end " 13 " the pin ground connection of IC1, open the memory of IC1, after input on the keyboard I newly is provided with password, press " * " key, disconnect K1, make the J3-1 contact transfer normally open to thereby disconnect relay J 3, newly depositing in the memory of password locking in IC1 by closure state.Ignition control circuit 2 is that the collector series relay J2 by the aerotron BG2 of bias amplifier constitutes, resistance R 7 is a current-limiting resistance, the mouth of IC1 " 17 " output low level signal is to the base stage of aerotron BG2, resistance R 8 is a biasing resistor, with resistance R6 is that mouth " 17 " end of IC1 provides enough high level, so that BG2 effectively ends, when IC1 " 17 " end output ignition signal low level signal, aerotron BG2 conducting, relay J 2 adhesives, its contact J2-1 closure, trigger point ignition circuit 6 is controlled the utmost point with controllable silicon SCR 2 and SCR1 that password is revised control circuit 4, as shown in Figure 4, thereby make controllable silicon SCR 2 conductings make ignition system energized (when K2 is closed), initial igniter.Alarm control circuit 3 is that the collector series relay J1 by the aerotron BG1 of bias amplifier constitutes, resistance R 4 is a current-limiting resistance, " 15 " end output alarm signal low level of IC1 is input to the base stage of aerotron BG1 through resistance R 4, make the BG1 conducting, relay J 1 adhesive, its contact J1-1, J1-2 connects the power supply of warning circuit 5, and makes warning circuit 5 produce alerting signal.Resistance R 5 discharges the loop for the electromagnetic energy that biasing resistor, diode D4, D5, D6 are used separately as relay J 1, J2, J3.Firing circuit 6 is revised control circuit 4 by controllable silicon SCR 2 with password, SCR1, relay J 3 constitutes, as shown in Figure 4, resistance R 10, R12 series connection dividing potential drop provides bias voltage for the controllable silicon SCR 1 control utmost point, resistance R 11, R13 series connection dividing potential drop provides bias voltage for the controllable silicon SCR 2 control utmost points, K switch 1, K2 is respectively controllable silicon SCR 1, SCR2 forces cutoff switch, during the starting ignition system, close K switch 2(ignition key) after, the input proper password is also by " NO " key on keyboard I, at this moment IC1 " 17 " end is exported 2 seconds wide low levels, make aerotron BG2 saturation conduction, relay J 2 adhesives, the closed energized of its normal opened contact J2-1 is by resistance R 10, R13 makes controllable silicon SCR 2 conductings for the controllable silicon SCR 2 control utmost points provide trigger voltage, thereby cut-in point ignition system power supply, starting apparatus combustion engine, A termination power wherein, B termination electromagnetic type firing unit.When revising password, close a switch behind the K1, and the input original code, click " ON " key, as mentioned above, the closed energized of J2-1, resistance R 10, R12 provide trigger voltage for the controllable silicon SCR 1 control utmost point, make controllable silicon SCR 1 conducting, relay J 3 adhesives, its normal opened contact J3-1 closure, make " 13 " end ground connection of IC1, thereby open the IC1 internal memory, so that password is newly established in the input storage, Ruo Xin establishes password after keyboard I input and storage (by " * " key), disconnect K1 thereby the automatic cutout of J3-1 contact, make and newly establish password locking in IC1.Warning circuit 5 constitutes oscillating circuit by integrated circuit oscillator IC2 and peripheral circuit, as shown in Figure 3, resistance R 21, R22, capacitor C 11 is formed low frequency oscillator with IC2, R24, R25, C14 and IC2 form high frequency generator, and C10 is a power filtering capacitor, and C12, C13 are respectively the filter capacitor of IC2 control end " 3 " " 11 ", bypass is from the noise jamming of power supply, and diode D10 is the charging diode of capacitor C 11.The low-frequency square-wave signal of being exported by " 5 " end of IC2 is added to its control end " 11 " through resistance R 23, promptly by a low-frequency square-wave modulation high frequency square wave oscillator, make " 9 " end of IC2 produce the base stage that an oscillation frequency from low to high exports emitter follower aerotron BG3 to, the loud speaker Y that promotes aerotron BG3 emitter serial connection sends chimes of doom." 15 " " 17 " pin difference output alarm signal among the IC1 of electronic anti-theft coded lock and ignition signal are as shown in Figure 2, all be in high level at ordinary times, if the IC1 internal memory has password, during starting apparatus combustion engine, insert ignition key earlier and connect igniter pawl, on keyboard I, import proper password then and click " ON " key and get final product, if use (when dispatching from the factory first, password setting is a numeral 0), then at first should give and store password in the IC1, K1 input digit 0 and by " ON " key, at this moment on keyboard I closes a switch earlier, 2 seconds low levels of " 17 " end output of IC1, aerotron BG2 saturation conduction, relay J 2 adhesives, the closed energized of normal opened contact J2-1, the control utmost point that dividing potential drop on the resistance R 12 triggers controllable silicon SCR 1 makes its conducting, thereby relay J 3 adhesives, its normal opened contact J3-1 closure is connected IC1 " 13 " and is held and ground, the internal memory of IC1 is opened, and IC1 is in the password preset condition.To imagine the good password below 12 again, after input on the keyboard I, click " * " key, password then stores to get up in IC1, disconnect K1 again, force SCR1 to end, relay J 3 outages, thus the J3-1 contact is disconnected, like this, password then is locked in the IC1, during igniting, connects to light a fire to draw with ignition key (being K2) earlier and pulls, on keyboard I, correctly import the password of setting then, and click " ON " key, in 2 seconds wide low levels of IC1 " 17 " end output, make aerotron BG2 saturation conduction, relay J 2 adhesives, J2-1 contact energized triggers the controllable silicon SCR 2 control utmost points by resistance R 13 dividing potential drops, makes the SCR2 conducting, thereby the power connection ignition system, the purpose of realization engine starting.If three input error passwords, " 15 " end of IC1 is then exported 60 seconds wide low levels, aerotron BG1 saturation conduction, relay J 1 adhesive, power connection warning circuit 5 produces the alerting signal by the low frequency modulation high frequency, promotes loud speaker Y through aerotron BG3 and sends chimes of doom.

Claims (3)

1, a kind of motor vehicle electronic anti-theft puzzle lock is characterized in that:

The input end that is connect central microprocessor IC 1 by the row and column mouth electricity of keyboard I constitutes coding and decoding circuit [1], exports igniting and warning two-way low level signal respectively to ignition control circuit [2] and alarm control circuit [3] from two mouths of central microprocessor integrated circuit IC1;

Ignition control circuit [2] is the collector series relay J2 coil by the aerotron BG2 of bias amplifier, the ignition signal that the base stage of aerotron BG2 receives the IC1 output in the above-mentioned coding and decoding circuit [1] constitutes, and revises control circuit [4] and firing circuit [6] with the contact J2-1 control password of relay J 2;

It is by controllable silicon SCR 1 serial connection relay J 3 coils that password is revised control circuit [4], by the control utmost point of the contact J2-1 of above-mentioned relay J 2 serial connection controllable silicon SCR 1, be serially connected between the storage control end and power ground of the middle IC1 of coding and decoding circuit [1] with the contact J3-1 of relay J 3;

Firing circuit [6] is by being serially connected in the vehicle ignition circuit after the controllable silicon SCR 2 serial connection K switch 2, being connected in series the control utmost point of controllable silicon SCR 2 by the contact J2-1 of above-mentioned relay J 2;

Alarm control circuit [3] is the collector series relay J1 by the aerotron BG1 of bias amplifier, the alerting signal of the IC1 output in the base stage received code decoding circuit [1] of aerotron BG1, the contact J1-1 of usefulness relay J 1 connects the power supply of warning circuit [5];

Warning circuit [5] by integrated circuit oscillator IC2 electricity connect outer meeting resistance, electric capacity is formed the oscillating circuit that is become high frequency by low frequency modulation, the output high-frequency signal is to the base stage of emitter follower aerotron BG3, with the emitter serial connection loud speaker Y of aerotron BG3.

2,, it is characterized in that the central microprocessor IC 1 in the coding and decoding circuit ［ 1 ］ is to be made of CMOS integrated circuit TWH9103 according to the described anti-theft puzzle lock of claim 1.

3, according to the described anti-theft puzzle lock of claim 1, the line output end that it is characterized in that keyboard I in the coding and decoding circuit ［ 1 ］ has four lines, be serially connected with diode D respectively between first row and second row, the third line, the fourth line, keyboard I has three row mouths, its first row mouth power connection ground wire is formed the decimal system number output signal by the row and column mouth of keyboard I.

Images