CN203894894U - Communication base station anti-theft alarm device - Google Patents
Communication base station anti-theft alarm device Download PDFInfo
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- CN203894894U CN203894894U CN201420332159.9U CN201420332159U CN203894894U CN 203894894 U CN203894894 U CN 203894894U CN 201420332159 U CN201420332159 U CN 201420332159U CN 203894894 U CN203894894 U CN 203894894U
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Abstract
The utility model relates to base station anti-theft technologies, and particularly relates to a communication base station anti-theft alarm device which solves a problem that a special anti-theft alarm device for unattended base stations is unavailable in the prior art. The communication base station anti-theft alarm device comprises first to fourth IC555 timers, first to seventh triodes, an operational amplifier, a first relay, a second relay, first to fourth photoresistors, first to fourth piezoelectric ceramic pieces, a first light-emitting diode, a second light-emitting diode, a third light-emitting diode, first to twenty-first resistors, first to eleventh capacitors, a master switch, a positive power supply end and a negative power supply end. The communication base station anti-theft alarm device is applicable to unattended base stations.
Description
Technical field
The utility model relates to base station anti-theft technology, specifically a kind of communication base station anti-theft alarm device.
Background technology
At present, communication base station is mostly unmanned base station.Due to unmanned, the various device in base station machine room very easily suffers theft and the destruction of lawless people, causes thus base station normally to move, thereby causes communication network to interrupt.Therefore,, in order to guarantee that unmanned base station can continue normal operation, be necessary to invent a kind of antitheft alarm device that is exclusively used in unmanned base station.Yet there is no at present a kind of like this device.
Summary of the invention
The utility model there is no a kind of problem that is exclusively used in the antitheft alarm device of unmanned base station at present in order to solve, and a kind of communication base station anti-theft alarm device is provided.
The utility model is to adopt following technical scheme to realize: communication base station anti-theft alarm device, comprises first-, tetra-IC555 timers, first-, seven triodes, operational amplifier, the first-the second relay, first-, tetra-photoresistance, first-, tetra-piezoelectric ceramic pieces, first-, tri-light emitting diodes, the first-the 21 resistance, first-, 11 electric capacity, main switch, positive power source terminal, negative power end;
Wherein, the first pin of an IC555 timer is connected with negative power end; The second pin of the one IC555 timer is connected with positive power source terminal by the first resistance, and is connected with negative power end with main switch by the first electric capacity parallel with one another; The 3rd pin of the one IC555 timer is connected with the base stage of the first triode, and by the first light emitting diode, the 3rd resistance, is connected with negative power end successively; The 4th pin of the one IC555 timer is connected with positive power source terminal; The 5th pin of the one IC555 timer is connected with negative power end by the 3rd electric capacity; The 6th pin of the one IC555 timer is connected with positive power source terminal by the second resistance, and is connected with negative power end by the second electric capacity; The 7th pin of the one IC555 timer is connected with the 6th pin; The 8th pin of the one IC555 timer is connected with the 4th pin;
The collector of the first triode is connected with positive power source terminal by the coil of the first relay; The emitter of the first triode is connected with negative power end; Normally closed contact one end of the first relay is connected with positive power source terminal;
The positive input terminal of operational amplifier is connected with the normally closed contact other end of the first relay by the 5th resistance, and is connected with negative power end by the 6th resistance; The negative input end of operational amplifier is connected with the normally closed contact other end of the first relay by the 4th resistance, and is connected with negative power end by first-parallel with one another, tetra-photoresistance; The output terminal of operational amplifier is connected with the base stage of the second triode by the 8th resistance, and by the 7th resistance, the second light emitting diode, is connected with negative power end successively;
The collector of the second triode is connected with the normally closed contact other end of the first relay by the 9th resistance; The emitter of the second triode is connected with negative power end;
The first pin of the 2nd IC555 timer is connected with negative power end; The second pin of the 2nd IC555 timer is connected with the collector of the second triode; The 3rd pin of the 2nd IC555 timer is connected with the base stage of the 3rd triode; The 4th pin of the 2nd IC555 timer is connected with the normally closed contact other end of the first relay; The 5th pin of the 2nd IC555 timer is connected with negative power end by the 5th electric capacity; The 6th pin of the 2nd IC555 timer is connected with the normally closed contact other end of the first relay by the tenth resistance, and is connected with negative power end by the 4th electric capacity; The 7th pin of the 2nd IC555 timer is connected with the 6th pin; The 8th pin of the 2nd IC555 timer is connected with the 4th pin;
The collector of the 3rd triode is connected by the coil of the second relay and the normally closed contact other end of the first relay; The emitter of the 3rd triode is connected with negative power end;
The base stage of the 4th triode is connected with negative power end by first-parallel with one another, tetra-piezoelectric ceramic pieces; The collector of the 4th triode is connected with the normally closed contact other end of the first relay by the 11 resistance; The emitter of the 4th triode is connected with negative power end;
The base stage of the 5th triode is connected with the collector of the 4th triode; The collector of the 5th triode is connected with the normally closed contact other end of the first relay by the 13 resistance; The emitter of the 5th triode is connected with the base stage of the 4th triode by the 12 resistance, and is connected with negative power end with the 6th electric capacity by the 14 resistance parallel with one another;
The first pin of the 3rd IC555 timer is connected with negative power end; The second pin of the 3rd IC555 timer is connected with the collector of the 5th triode; The 3rd pin of the 3rd IC555 timer is connected with the base stage of the 6th triode, and by the 3rd light emitting diode, the 18 resistance, is connected with negative power end successively; The 4th pin of the 3rd IC555 timer is connected with the normally closed contact other end of the first relay; The 5th pin of the 3rd IC555 timer is connected with negative power end by the 8th electric capacity; The 6th pin of the 3rd IC555 timer is connected with the normally closed contact other end of the first relay by the 16 resistance, the 15 resistance successively, and is connected with negative power end by the 7th electric capacity; The 7th pin of the 3rd IC555 timer is connected with the 6th pin; The 8th pin of the 3rd IC555 timer is connected with the 4th pin;
The collector of the 6th triode is connected with the normally closed contact other end of the first relay by the 17 resistance; The emitter of the 6th triode is connected with negative power end;
The base stage of the 7th triode is connected with the collector of the 6th triode; The emitter of the 7th triode is connected with the normally closed contact other end of the first relay;
The first pin of the 4th IC555 timer is connected with negative power end; The second pin of the 4th IC555 timer is connected with the collector of the 7th triode by the 19 resistance, and is connected with negative power end by the 9th electric capacity; The 3rd pin of the 4th IC555 timer is connected with the collector of the second triode by the 21 resistance; The 4th pin of the 4th IC555 timer is connected with the collector of the 7th triode; The 5th pin of the 4th IC555 timer is connected with negative power end by the 11 electric capacity; The 6th pin of the 4th IC555 timer is connected with the collector of the 7th triode by the 20 resistance, and is connected with negative power end by the tenth electric capacity; The 7th pin of the 4th IC555 timer is connected with the 6th pin; The 8th pin of the 4th IC555 timer is connected with the 4th pin.
During work, by first-, tetra-photoresistance corresponding being arranged on the four sides interior wall of base station machine room one by one.By first-, tetra-piezoelectric ceramic pieces corresponding being arranged on the four sides interior wall of base station machine room one by one.By DC-DC converter, convert base station-48V power supply to 12V power supply, and by 12V power supply access positive power source terminal and negative power end.By the alarm control circuit of normally opened contact access base station sending and receiving stations of the second relay, the camera control circuit of the public address equipment control circuit of base station machine room, base station machine room, the light fixture control circuit of base station machine room.Specific works process is as follows:
One, when base station staff enters base station machine room, main switch is closed, the second pin of the one IC555 timer becomes low level, the 3rd pin of the one IC555 timer becomes high level, the first light emitting diode is lighted, and the base stage of the first triode becomes high level, the first triode conducting, the coil of the first relay obtains electric, and the normally closed contact of the first relay disconnects.Now, between the coil of the second relay and positive power source terminal, in dissengaged positions, the alarm control circuit of base transceiver station, the public address equipment control circuit of base station machine room, the camera control circuit of base station machine room are, the light fixture control circuit of base station machine room all loses antitheft alarm function.When base station staff leaves base station machine room, main switch is disconnected, the second pin of the one IC555 timer becomes high level, the 3rd pin of the one IC555 timer becomes low level, the first light emitting diode extinguishes, and the base stage of the first triode becomes low level, the first triode cut-off, the coil losing electricity of the first relay, the normally closed contact of the first relay is closed.Now, between the coil of the second relay and positive power source terminal, in on-state, the alarm control circuit of base transceiver station, the public address equipment control circuit of base station machine room, the camera control circuit of base station machine room are, the light fixture control circuit of base station machine room all recovers antitheft alarm function;
Two, when lawless people is by opening the door or when the mode of broken wall enters base station machine room (now, between the coil of the second relay and positive power source terminal in on-state), light (such as sunshine, torch light, light etc.) can illuminate base station machine room inside.Now, under the irradiation of light, the resistance of first-, tetra-photoresistance reduces, the negative input end of operational amplifier becomes low level, the output terminal of operational amplifier becomes high level, the second light emitting diode is lighted, the base stage of the second triode becomes high level, the second triode conducting, the collector of the second triode becomes low level, the second pin of the 2nd IC555 timer becomes low level, the 3rd pin of the 2nd IC555 timer becomes high level, the base stage of the 3rd triode becomes high level, the 3rd triode conducting, the coil of the second relay obtains electric, the normally opened contact of the second relay is closed, the alarm control circuit of base transceiver station, the public address equipment control circuit of base station machine room, the camera control circuit of base station machine room, the light fixture control circuit of base station machine room is all connected, base transceiver station sends alarm signal, the public address equipment alerting signal of sounding, light fixture illuminates base station machine room completely, camera is taken base station machine room inside, thus lawless people is drawn back with fear, and record theft evidence, thereby realize antitheft alarm,
Three, when lawless people is by opening the door or when the mode of broken wall enters base station machine room (now, between the coil of the second relay and positive power source terminal in on-state), the wall of base station machine room can vibrate.Now, because wall vibrates, first-, tetra-piezoelectric ceramic piece output low levels, the base stage of the 4th triode becomes low level, the 4th triode cut-off, the collector of the 4th triode becomes high level, the base stage of the 5th triode becomes high level, the 5th triode conducting, the collector of the 5th triode becomes low level, the second pin of the 3rd IC555 timer becomes low level, the 3rd pin of the 3rd IC555 timer becomes high level, the 3rd light emitting diode is lighted, the base stage of the 6th triode becomes high level, the 6th triode conducting, the collector of the 6th triode becomes low level, the base stage of the 7th triode becomes low level, the 7th triode conducting, the second pin of the 4th IC555 timer becomes high level, the 3rd pin of the 4th IC555 timer becomes low level, the second pin of the 2nd IC555 timer becomes low level, the 3rd pin of the 2nd IC555 timer becomes high level, the coil of the second relay obtains electric, the normally opened contact of the second relay is closed, the alarm control circuit of base transceiver station, the public address equipment control circuit of base station machine room, the camera control circuit of base station machine room, the light fixture control circuit of base station machine room is all connected, base transceiver station sends alarm signal, the public address equipment alerting signal of sounding, light fixture illuminates base station machine room completely, camera is taken base station machine room inside, thus lawless people is drawn back with fear, and record theft evidence, thereby realize antitheft alarm.
Based on said process, communication base station anti-theft alarm device described in the utility model, by adopting brand new, has been realized the antitheft alarm of unmanned base station, effectively guaranteed that thus base station continues normal operation, thereby it is unimpeded effectively to have guaranteed that communication network continues.
The utility model is rational in infrastructure, it is ingenious to design, and efficiently solves and there is no at present a kind of problem that is exclusively used in the antitheft alarm device of unmanned base station, is applicable to unmanned base station.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Communication base station anti-theft alarm device, comprises first-, tetra-IC555 timer T1-T4, first-, seven triode Q1-Q7, operational amplifier A R1, the first-the second relay J 1-J2, first-, tetra-photoresistance RL1-RL4, first-, tetra-piezoelectric ceramic piece Y1-Y4, first-, tri-light emitting diode D1-D3, the first-the 21 resistance R 1-R21, first-, 11 capacitor C 1-C11, main switch K1, positive power source terminal+VDD, negative power end-VSS;
Wherein, the first pin of an IC555 timer T1 is connected with negative power end-VSS; The second pin of the one IC555 timer T1 is connected with positive power source terminal+VDD by the first resistance R 1, and is connected with negative power end-VSS with main switch K1 by the first capacitor C 1 parallel with one another; The 3rd pin of the one IC555 timer T1 is connected with the base stage of the first triode Q1, and by the first light emitting diode D1, the 3rd resistance R 3, is connected with negative power end-VSS successively; The 4th pin of the one IC555 timer T1 is connected with positive power source terminal+VDD; The 5th pin of the one IC555 timer T1 is connected with negative power end-VSS by the 3rd capacitor C 3; The 6th pin of the one IC555 timer T1 is connected with positive power source terminal+VDD by the second resistance R 2, and is connected with negative power end-VSS by the second capacitor C 2; The 7th pin of the one IC555 timer T1 is connected with the 6th pin; The 8th pin of the one IC555 timer T1 is connected with the 4th pin;
The collector of the first triode Q1 is connected with positive power source terminal+VDD by the coil of the first relay J 1; The emitter of the first triode Q1 is connected with negative power end-VSS; Normally closed contact one end of the first relay J 1 is connected with positive power source terminal+VDD;
The positive input terminal of operational amplifier A R1 is connected with the normally closed contact other end of the first relay J 1 by the 5th resistance R 5, and is connected with negative power end-VSS by the 6th resistance R 6; The negative input end of operational amplifier A R1 is connected with the normally closed contact other end of the first relay J 1 by the 4th resistance R 4, and is connected with negative power end-VSS by first-parallel with one another, tetra-photoresistance RL1-RL4; The output terminal of operational amplifier A R1 is connected with the base stage of the second triode Q2 by the 8th resistance R 8, and by the 7th resistance R 7, the second light emitting diode D2, is connected with negative power end-VSS successively;
The collector of the second triode Q2 is connected with the normally closed contact other end of the first relay J 1 by the 9th resistance R 9; The emitter of the second triode Q2 is connected with negative power end-VSS;
The first pin of the 2nd IC555 timer T2 is connected with negative power end-VSS; The second pin of the 2nd IC555 timer T2 is connected with the collector of the second triode Q2; The 3rd pin of the 2nd IC555 timer T2 is connected with the base stage of the 3rd triode Q3; The 4th pin of the 2nd IC555 timer T2 is connected with the normally closed contact other end of the first relay J 1; The 5th pin of the 2nd IC555 timer T2 is connected with negative power end-VSS by the 5th capacitor C 5; The 6th pin of the 2nd IC555 timer T2 is connected with the normally closed contact other end of the first relay J 1 by the tenth resistance R 10, and is connected with negative power end-VSS by the 4th capacitor C 4; The 7th pin of the 2nd IC555 timer T2 is connected with the 6th pin; The 8th pin of the 2nd IC555 timer T2 is connected with the 4th pin;
The collector of the 3rd triode Q3 is connected with the normally closed contact other end of the first relay J 1 by the coil of the second relay J 2; The emitter of the 3rd triode Q3 is connected with negative power end-VSS;
The base stage of the 4th triode Q4 is connected with negative power end-VSS by first-parallel with one another, tetra-piezoelectric ceramic piece Y1-Y4; The collector of the 4th triode Q4 is connected with the normally closed contact other end of the first relay J 1 by the 11 resistance R 11; The emitter of the 4th triode Q4 is connected with negative power end-VSS;
The base stage of the 5th triode Q5 is connected with the collector of the 4th triode Q4; The collector of the 5th triode Q5 is connected with the normally closed contact other end of the first relay J 1 by the 13 resistance R 13; The emitter of the 5th triode Q5 is connected with the base stage of the 4th triode Q4 by the 12 resistance R 12, and is connected with negative power end-VSS with the 6th capacitor C 6 by the 14 resistance R 14 parallel with one another;
The first pin of the 3rd IC555 timer T3 is connected with negative power end-VSS; The second pin of the 3rd IC555 timer T3 is connected with the collector of the 5th triode Q5; The 3rd pin of the 3rd IC555 timer T3 is connected with the base stage of the 6th triode Q6, and by the 3rd light emitting diode D3, the 18 resistance R 18, is connected with negative power end-VSS successively; The 4th pin of the 3rd IC555 timer T3 is connected with the normally closed contact other end of the first relay J 1; The 5th pin of the 3rd IC555 timer T3 is connected with negative power end-VSS by the 8th capacitor C 8; The 6th pin of the 3rd IC555 timer T3 is connected with the normally closed contact other end of the first relay J 1 by the 16 resistance R the 16, the 15 resistance R 15 successively, and is connected with negative power end-VSS by the 7th capacitor C 7; The 7th pin of the 3rd IC555 timer T3 is connected with the 6th pin; The 8th pin of the 3rd IC555 timer T3 is connected with the 4th pin;
The collector of the 6th triode Q6 is connected with the normally closed contact other end of the first relay J 1 by the 17 resistance R 17; The emitter of the 6th triode Q6 is connected with negative power end-VSS;
The base stage of the 7th triode Q7 is connected with the collector of the 6th triode Q6; The emitter of the 7th triode Q7 is connected with the normally closed contact other end of the first relay J 1;
The first pin of the 4th IC555 timer T4 is connected with negative power end-VSS; The second pin of the 4th IC555 timer T4 is connected with the collector of the 7th triode Q7 by the 19 resistance R 19, and is connected with negative power end-VSS by the 9th capacitor C 9; The 3rd pin of the 4th IC555 timer T4 is connected with the collector of the second triode Q2 by the 21 resistance R 21; The 4th pin of the 4th IC555 timer T4 is connected with the collector of the 7th triode Q7; The 5th pin of the 4th IC555 timer T4 is connected with negative power end-VSS by the 11 capacitor C 11; The 6th pin of the 4th IC555 timer T4 is connected with the collector of the 7th triode Q7 by the 20 resistance R 20, and is connected with negative power end-VSS by the tenth capacitor C 10; The 7th pin of the 4th IC555 timer T4 is connected with the 6th pin; The 8th pin of the 4th IC555 timer T4 is connected with the 4th pin.
During concrete enforcement, first-, six triode Q1-Q6 all adopt NPN type triode.The 7th triode Q7 adopts positive-negative-positive triode.Operational amplifier A R1 adopts LM358 type operational amplifier.The second resistance R 2, the 5th resistance R 5, the tenth resistance R the 10, the 12 resistance R the 12, the 20 resistance R 20 all adopt adjustable resistance.
Claims (1)
1. a communication base station anti-theft alarm device, is characterized in that: comprise first-, tetra-IC555 timers (T1-T4), first-, seven triodes (Q1-Q7), operational amplifier (AR1), the first-the second relay (J1-J2), first-, tetra-photoresistance (RL1-RL4), first-, tetra-piezoelectric ceramic pieces (Y1-Y4), first-, tri-light emitting diodes (D1-D3), the first-the 21 resistance (R1-R21), first-, 11 electric capacity (C1-C11), main switch (K1), positive power source terminal (+VDD), negative power end (VSS);
Wherein, the first pin of an IC555 timer (T1) is connected with negative power end (VSS); The second pin of the one IC555 timer (T1) is connected with positive power source terminal (+VDD) by the first resistance (R1), and is connected with negative power end (VSS) with main switch (K1) by the first electric capacity (C1) parallel with one another; The 3rd pin of the one IC555 timer (T1) is connected with the base stage of the first triode (Q1), and by the first light emitting diode (D1), the 3rd resistance (R3), is connected with negative power end (VSS) successively; The 4th pin of the one IC555 timer (T1) is connected with positive power source terminal (+VDD); The 5th pin of the one IC555 timer (T1) is connected with negative power end (VSS) by the 3rd electric capacity (C3); The 6th pin of the one IC555 timer (T1) is connected with positive power source terminal (+VDD) by the second resistance (R2), and is connected with negative power end (VSS) by the second electric capacity (C2); The 7th pin of the one IC555 timer (T1) is connected with the 6th pin; The 8th pin of the one IC555 timer (T1) is connected with the 4th pin;
The collector of the first triode (Q1) is connected with positive power source terminal (+VDD) by the coil of the first relay (J1); The emitter of the first triode (Q1) is connected with negative power end (VSS); Normally closed contact one end of the first relay (J1) is connected with positive power source terminal (+VDD);
The positive input terminal of operational amplifier (AR1) is connected with the normally closed contact other end of the first relay (J1) by the 5th resistance (R5), and is connected with negative power end (VSS) by the 6th resistance (R6); The negative input end of operational amplifier (AR1) is connected with the normally closed contact other end of the first relay (J1) by the 4th resistance (R4), and is connected with negative power end (VSS) by first-parallel with one another, tetra-photoresistance (RL1-RL4); The output terminal of operational amplifier (AR1) is connected with the base stage of the second triode (Q2) by the 8th resistance (R8), and by the 7th resistance (R7), the second light emitting diode (D2), is connected with negative power end (VSS) successively;
The collector of the second triode (Q2) is connected with the normally closed contact other end of the first relay (J1) by the 9th resistance (R9); The emitter of the second triode (Q2) is connected with negative power end (VSS);
The first pin of the 2nd IC555 timer (T2) is connected with negative power end (VSS); The second pin of the 2nd IC555 timer (T2) is connected with the collector of the second triode (Q2); The 3rd pin of the 2nd IC555 timer (T2) is connected with the base stage of the 3rd triode (Q3); The 4th pin of the 2nd IC555 timer (T2) is connected with the normally closed contact other end of the first relay (J1); The 5th pin of the 2nd IC555 timer (T2) is connected with negative power end (VSS) by the 5th electric capacity (C5); The 6th pin of the 2nd IC555 timer (T2) is connected with the normally closed contact other end of the first relay (J1) by the tenth resistance (R10), and is connected with negative power end (VSS) by the 4th electric capacity (C4); The 7th pin of the 2nd IC555 timer (T2) is connected with the 6th pin; The 8th pin of the 2nd IC555 timer (T2) is connected with the 4th pin;
The collector of the 3rd triode (Q3) is connected with the normally closed contact other end of the first relay (J1) by the coil of the second relay (J2); The emitter of the 3rd triode (Q3) is connected with negative power end (VSS);
The base stage of the 4th triode (Q4) is connected with negative power end (VSS) by first-, tetra-piezoelectric ceramic pieces (Y1-Y4) parallel with one another; The collector of the 4th triode (Q4) is connected with the normally closed contact other end of the first relay (J1) by the 11 resistance (R11); The emitter of the 4th triode (Q4) is connected with negative power end (VSS);
The base stage of the 5th triode (Q5) is connected with the collector of the 4th triode (Q4); The collector of the 5th triode (Q5) is connected with the normally closed contact other end of the first relay (J1) by the 13 resistance (R13); The emitter of the 5th triode (Q5) is connected with the base stage of the 4th triode (Q4) by the 12 resistance (R12), and is connected with negative power end (VSS) with the 6th electric capacity (C6) by the 14 resistance (R14) parallel with one another;
The first pin of the 3rd IC555 timer (T3) is connected with negative power end (VSS); The second pin of the 3rd IC555 timer (T3) is connected with the collector of the 5th triode (Q5); The 3rd pin of the 3rd IC555 timer (T3) is connected with the base stage of the 6th triode (Q6), and by the 3rd light emitting diode (D3), the 18 resistance (R18), is connected with negative power end (VSS) successively; The 4th pin of the 3rd IC555 timer (T3) is connected with the normally closed contact other end of the first relay (J1); The 5th pin of the 3rd IC555 timer (T3) is connected with negative power end (VSS) by the 8th electric capacity (C8); The 6th pin of the 3rd IC555 timer (T3) is connected with the normally closed contact other end of the first relay (J1) by the 16 resistance (R16), the 15 resistance (R15) successively, and is connected with negative power end (VSS) by the 7th electric capacity (C7); The 7th pin of the 3rd IC555 timer (T3) is connected with the 6th pin; The 8th pin of the 3rd IC555 timer (T3) is connected with the 4th pin;
The collector of the 6th triode (Q6) is connected with the normally closed contact other end of the first relay (J1) by the 17 resistance (R17); The emitter of the 6th triode (Q6) is connected with negative power end (VSS);
The base stage of the 7th triode (Q7) is connected with the collector of the 6th triode (Q6); The emitter of the 7th triode (Q7) is connected with the normally closed contact other end of the first relay (J1);
The first pin of the 4th IC555 timer (T4) is connected with negative power end (VSS); The second pin of the 4th IC555 timer (T4) is connected with the collector of the 7th triode (Q7) by the 19 resistance (R19), and is connected with negative power end (VSS) by the 9th electric capacity (C9); The 3rd pin of the 4th IC555 timer (T4) is connected with the collector of the second triode (Q2) by the 21 resistance (R21); The 4th pin of the 4th IC555 timer (T4) is connected with the collector of the 7th triode (Q7); The 5th pin of the 4th IC555 timer (T4) is connected with negative power end (VSS) by the 11 electric capacity (C11); The 6th pin of the 4th IC555 timer (T4) is connected with the collector of the 7th triode (Q7) by the 20 resistance (R20), and is connected with negative power end (VSS) by the tenth electric capacity (C10); The 7th pin of the 4th IC555 timer (T4) is connected with the 6th pin; The 8th pin of the 4th IC555 timer (T4) is connected with the 4th pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332159.9U CN203894894U (en) | 2014-06-21 | 2014-06-21 | Communication base station anti-theft alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332159.9U CN203894894U (en) | 2014-06-21 | 2014-06-21 | Communication base station anti-theft alarm device |
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| Publication Number | Publication Date |
|---|---|
| CN203894894U true CN203894894U (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420332159.9U Expired - Fee Related CN203894894U (en) | 2014-06-21 | 2014-06-21 | Communication base station anti-theft alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203894894U (en) |
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2014
- 2014-06-21 CN CN201420332159.9U patent/CN203894894U/en not_active Expired - Fee Related
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