CN2140540Y

CN2140540Y - Bicycle antitheft alarm

Info

Publication number: CN2140540Y
Application number: CN 92237801
Authority: CN
Inventors: 林海鹰
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-28
Filing date: 1992-11-28
Publication date: 1993-08-18
Anticipated expiration: 2002-11-28

Abstract

The utility model relates to an anti-theft alarm for a bicycle. One side of a code multi-way switch is connected in parallel with positive power supply, and the other side is correspondingly connected with the multi-way input end of a decoder. A selected path of the decoder output end is connected with the pulse input end of a counter, and a vibration switch is connected between the pulse input end and the power supply. A selected output end of the counter is connected with the pulse self-locking and the input of an alarm time control circuit. The output of the alarm time control circuit is connected with a voltage stabilizing circuit of the music integrated block power supply, providing power supply for the music integrated block, and can be fed back to the zero-clearing end. The utility model is encapsulated in a box body which is arranged on the bicycle.

Description

Bicycle antitheft alarm

The utility model relates to a kind of alarm, particularly a kind of bicycle use burglar alarm.

China is bicycle big country, especially in recent years medium-to-high grade bicycle such as sport car, mountain bike is universal day by day, antitheft importance is increasing, depend merely on lock or chain lock and can not prevent effectively that still bicycle is stolen, and stolen phenomenon such as particularly high-grade bicycle of bicycle or light cavalry is comparatively serious at present.People think hard on lock, make the lock that is not easy to pry open, play antitheft effect, but some burglar just can steal other means of transport of bicycle use without picking lock, some robber is then more skillful again, still the lock of anti-theft feature can be destroyed, also do not have at present a kind ofly can effectively prevent the device that bicycle is stolen.

The purpose of this utility model is exactly in order to address the above problem, and a kind of dependable performance, the difficult bicycle anti-theft alarm device of decoding are provided.

Technical solution of the present utility model:

A kind of bicycle anti-theft alarm device, it is by the many middle way switch K of password ₁, code translator IC ₁, vibroswitch K ₂, counter IC ₂, pulse self-locking and control circuit, music integrated circuit IC when reporting to the police ₃, music-integrating block power supply stabilization circuit and audio power amplifier circuit form, wherein the pulse self-locking and when reporting to the police control circuit by diode D ₂, resistance R ₂, capacitor C ₁With transistor BG ₁Form, the music-integrating block power supply stabilization circuit is by transistor BG ₂, stabilivolt DW and resistance R ₃Form, it is to music integrated circuit IC ₃Stabilized voltage supply is provided, and audio power amplifier circuit is by capacitor C ₂, C ₃, C ₄, resistance R ₄, power discharging integrated block IC ₄Form with loudspeaker Y, it is characterized in that password multi-way switch K ₁A side and connect positive supply, opposite side is respectively by resistance eutral grounding, simultaneously respectively with code translator IC ₁Corresponding connection of multichannel decoding input end, selected in its multichannel decoding output terminal leaded up to diode D ₁Meet counter IC ₂Pulse input end CP, insert vibroswitch K between this pulse input end CP and the positive supply ₂, it also passes through resistance R ground connection, IC simultaneously ₂A certain selected terminal count output Qi connect the pulse self-locking and diode D in the control circuit when reporting to the police ₂Positive pole, D ₂Negative pole lead up to capacitor C ₁Ground connection, resistance R is passed through on another road ₂Meet transistor BG ₁Base stage, BG ₁Emitter-base bandgap grading export one tunnel negative pole that meets stabilivolt DW in the music-integrating block power supply stabilization circuit, another road directly feedback meets counter IC ₂Clear terminal Cr; Circuit of the present utility model is packaged in the box body 1, and box body 1 is assemblied on the bicycle.

The utility model has solved the antitheft problem of bicycle effectively, when burglar's picking lock or when stealing car and runing away, the utility model can send voice or siren is reported to the police, can't break, force the burglar to give up midway, the utility model adopts totally-enclosed metal shell, if destroying shell also can report to the police, its dependable performance, effective, the utility model adopts cipher control, and can be provided with arbitrarily and change, security improves greatly, and its circuit is simple, and cost is low, volume is little, little power consumption, and have the anti-error energy of reporting achievement, have vast market prospect.The utility model can be finished anti-theft feature equally if be assembled together with other antitheft thing.

Fig. 1 is a scheme of installation of the present utility model;

Fig. 2 is an electrical schematic diagram of the present utility model.

As Fig. 1, box body 1 of the present utility model preferably is fixed between the supporting steel wire 3 of bicycle saddle 2 lower surfaces and saddle 2, its alarming horn Y should be positioned at the upper surface of box body 1, and box body 1 upper surface is positioned under saddle 2 lower surfaces, leave the gap of 1Cm between them, in case saddle 2 damages loudspeaker by pressure when riding, also prevent that the robber from damaging loudspeaker and alarm was lost efficacy simultaneously.Password multi-way switch K ₁Should be positioned at the outer surface of box body 1, so that the user is provided with the different operating state.

Principle of work of the present utility model such as Fig. 2, the cipher switch K among Fig. 2 ₁Adopt four-way switch, K ₁Can be address switch (model is DS-4), also self-lock switch.Four cipher switch K ₁Have 16 kinds of selectable passwords, suppose that selected a certain four passwords of user are at 1001 o'clock, the user only need stir K ₁High order end and two release knobs of low order end connect positive supply and get final product, this password is input to code translator IC ₁The password input end after, the password output terminal Y that it is corresponding ₉Be output as height, make counter IC ₂The CP pulse input end pin IC ₂Do not count, it exports Q ₄End is cheated and is eventually electronegative potential, and late-class circuit is not all worked, and alarm is not reported to the police, and is used for the user this moment and uses during state by bike.When the user does not need when antitheft by bike, then deliberately with the password setting mistake, this moment code translator IC ₁Y ₉Output terminal is low, IC ₂Be in the counting waiting status, in case people's motor-car is arranged, vibroswitch K ₂Connect K ₂Can be ball switch, also mercury cut-off, then IC ₂Begin counting, because IC ₂The output terminal of setting is Q ₄, meaning is promptly worked as IC ₂IC when meter is expired 8 vibratory impulses ₂Output is just arranged, and this is mainly used in and prevents false alarm, and avoiding other people to be not intended to bump or to knock this car over and make the alarm misoperation, the number of its step-by-step counting can be set as required.Work as IC ₂Full 8 pulses of meter, its output terminal Q ₄Be noble potential, it passes through D on the one hand ₂To C ₁Charging, the BG of control circuit when making pulse self-locking and warning on the other hand ₁Conducting, then BG ₁Emitter-base bandgap grading is a noble potential, BG ₁On the one hand with counter IC ₂Zero clearing makes IC ₂Repeat count guarantees the constant of alarm sound, because IC ₂Be cleared its Q ₄Become electronegative potential, then because C ₁The electric energy of charging savings is kept BG ₁Conducting a period of time, BG ₁Make the work of music-integrating block power supply stabilization circuit on the other hand, even BG ₂Conducting, IC ₃Must be electric, IC ₃Trigger end internal switching in advance, IC ₃Operating voltage determine by stabilivolt DW, so IC ₃Once electricly send voice signal or the siren signal is delivered to audio power amplifier circuit, between audio power amplifier circuit and music-integrating block power supply stabilization circuit, be connected to the audio frequency power amplifier power control circuit, it is used for preventing audio power amplifier circuit consumed power when static state, and it is by resistance R ₅, transistor BG ₃, relay J and normally opened contact J thereof ₁Form its BG ₃Base stage pass through R ₅With transistor BG in the music-integrating block power supply stabilization circuit ₂Emitter-base bandgap grading output connect BG ₃Collector connecting relay J, the normally opened contact J of J ₁Be connected on power discharging integrated block IC in the audio power amplifier circuit ₄Power end and the complete machine positive supply between.Thereby at the BG of music-integrating block power supply stabilization circuit ₂During conducting, make BG again ₃Conducting, relay J adhesive, its normally opened contact J ₁Closure, IC ₄Energized, audio power amplifier circuit work is with music integrated block IC ₃Signal amplify and to send alarm sound from loudspeaker Y, the length of each time of fire alarming is by capacitor C ₁And resistance R ₂Time constant decide, if the burglar is always when bicycle is walked in picking lock or pushing riding, chimes of doom is constant, forces the burglar to have to give up.The utility model is equally applicable to also be applicable on other antitheft thing on light cavalry, tricycle or other motor vehicle.

Claims

1, a kind of bicycle anti-theft alarm device, it is by the many middle way switch K of password ₁, code translator IC ₁, vibroswitch K ₂, counter IC ₂, pulse self-locking and control circuit, music integrated circuit IC when reporting to the police ₃, music-integrating block power supply stabilization circuit and audio power amplifier circuit form, wherein the pulse self-locking and when reporting to the police control circuit by diode D ₂, resistance R ₂, capacitor C ₁With transistor BG ₁Form, the music-integrating block power supply stabilization circuit is by transistor BG ₂, stabilivolt DW and resistance R ₃Form, it is to music integrated circuit IC ₃Stabilized voltage supply is provided, and audio power amplifier circuit is by capacitor C ₂, C ₃, C ₄, resistance R ₄, power discharging integrated block IC ₄Form with loudspeaker Y, it is characterized in that password multi-way switch K ₁A side and connect positive supply, opposite side is respectively by resistance eutral grounding, simultaneously respectively with code translator IC ₁Corresponding connection of multichannel decoding input end, selected in its multichannel decoding output terminal leaded up to diode D ₁Meet counter IC ₂Pulse input end CP, insert vibroswitch K between this pulse input end CP and the positive supply ₂, it also passes through resistance R ground connection, IC simultaneously ₂A certain selected terminal count output Qi connect the pulse self-locking and diode D in the control circuit when reporting to the police ₂Positive pole, D ₂Negative pole lead up to capacitor C ₁Ground connection, resistance R is passed through on another road ₂Meet transistor BG ₁Base stage, BG ₁Emitter-base bandgap grading export one tunnel negative pole that meets stabilivolt DW in the music-integrating block power supply stabilization circuit, another road directly feedback meets counter IC ₂Clear terminal Cr; Circuit of the present utility model is packaged in the box body 1, and box body 1 is assemblied on the bicycle.

2, by the described bicycle anti-theft alarm device of claim 1, it is characterized in that password multi-way switch K ₁Can be address switch, also self-lock switch.

3, by the described bicycle anti-theft alarm device of claim 1, it is characterized in that vibroswitch K ₂Can be ball switch, also mercury cut-off.

4, by the described bicycle anti-theft alarm device of claim 1, it is characterized in that box body 1 preferably is fixed between the supporting steel wire 3 of bicycle saddle 2 lower surfaces and saddle 2, its alarming horn Y should be positioned at the upper surface of box body 1, and box body 1 upper surface is positioned under saddle 2 lower surfaces, leave the gap of 1Cm between them, in case saddle 2 damages loudspeaker by pressure or prevents the artificial destruction loudspeaker, password multi-way switch K ₁Should be positioned at the outer surface of box body 1, so that the user is provided with the different operating state.

5, by the described bicycle anti-theft alarm device of claim 1, it is characterized in that being connected to the audio frequency power amplifier power control circuit between music-integrating block power supply stabilization circuit and the audio power amplifier circuit, it is by resistance R ₅, transistor BG ₃, relay J and normally opened contact J thereof ₁Form its BG ₃Base stage pass through R ₅With transistor BG in the music-integrating block power supply stabilization circuit ₂Emitter-base bandgap grading output connect BG ₃Collector connecting relay J, the normally opened contact J of J ₁Be connected on power discharging integrated block IC in the audio power amplifier circuit ₄Power end and the complete machine positive supply between.