CN2153098Y - Ultrasonic burglar alarm - Google Patents
Ultrasonic burglar alarm Download PDFInfo
- Publication number
- CN2153098Y CN2153098Y CN 93225662 CN93225662U CN2153098Y CN 2153098 Y CN2153098 Y CN 2153098Y CN 93225662 CN93225662 CN 93225662 CN 93225662 U CN93225662 U CN 93225662U CN 2153098 Y CN2153098 Y CN 2153098Y
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- Prior art keywords
- circuit
- alarm
- signal
- ultrasonic
- output
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Abstract
The utility model relates to an ultrasonic anti-theft alarm with an electronic cipher switch. The utility model comprises an ultrasonic transmitting circuit, an ultrasonic receiving circuit, a doppler signal detection amplifying circuit, a power supply circuit, an alarm circuit, a cipher input circuit and an electronic lock circuit which is used for judging whether the input cipher is correct or not. When a target intrudes or the error code is input, the logic control circuit of the alarm signal and an alarm control circuit can be output; according to the alarm signal, the alarm control circuit can control the alarm circuit to give an alarm.
Description
The utility model relates to a kind of Ultrasonic Intruder Alarm, relates in particular to a kind of Ultrasonic Intruder Alarm that has the electronic cipher switch.
Though the ultrasound wave alarm of prior art can utilize Doppler effect perception moving target, can't differentiate enemy and we, the false-alarm phenomenon can take place when owner is close, brought inconvenience to use.
Thereby the purpose of this utility model is to provide a kind of password that can utilize accurately to discern the Ultrasonic Intruder Alarm that the invador accurately reports to the police.
In order to achieve the above object, Ultrasonic Intruder Alarm of the present utility model comprises to guard space and launches hyperacoustic ultrasonic transmitter; Receive the ultrasonic receiver of reflected signal; From reflected signal, detect movable signal and amplify, the Doppler signal detecting amplifying circuit of shaping, output; The potential circuit of operating voltage is provided; Be used to produce the warning circuit of alarm sound, it is characterized in that, also comprise the password input circuit that is used to input password, be used to judge the electronic lock circuit that whether is consistent of the password of inputing with setting code, produce the logic control circuit of alerting signal according to the output of the output of Doppler signal detecting amplifying circuit or electronic lock circuit, the alarm control circuit of reporting to the police according to alerting signal control warning circuit.
Ultrasonic Intruder Alarm of the present utility model can accurately be discerned the advantage that the invador effectively reports to the police owing to have cipher switch thereby have.Its advantage is in particular in: when (1) need enter the forbidden zone as owner, can make alarm withdraw from the state of alert by handling code keypad; (2) alarm is on the alert down, if there is the people to invade, because the stranger can't know the cipher, when his continuous three key entry error codes, alarm will send police whistle sound and report to the police; (3) invador can trigger warning circuit if the disconnection alerting signal produces any connecting line between circuit and power supply and warning circuit, therefore also has vandal-proof advantage.
Describe the utility model in detail below with reference to embodiment and accompanying drawing.
Fig. 1 is the structured flowchart of Ultrasonic Intruder Alarm of the present utility model.
Fig. 2 is the electrical schematic diagram of a kind of preferred embodiment of said structure block diagram; Wherein Fig. 2 a is the electrical schematic diagram that alerting signal produces circuit, and Fig. 2 b is the electrical schematic diagram of power supply and warning circuit.
Referring to Fig. 1.Ultrasonic Intruder Alarm of the present utility model comprises ultrasonic receiver 2 from reception reflected signal to a certain guard space that launch hyperacoustic ultrasonic transmitter 1; From above-mentioned reflected signal, detect movable signal and amplify shaping, the Doppler signal detecting amplifying circuit 3 of output; Comprise a code keypad, be used to input the password input circuit 4 of password; Input end is connected, has according to the different inputs of password the electronic lock circuit 5 of corresponding output with password input circuit 4 output terminals; The output of Doppler signal detecting amplifying circuit 3 and electronic lock circuit 5 is carried out logic determines with correct identification invador's logic control circuit 6 whether; The output of logic control circuit is amplified and is converted to the alarm switch signal output alarm control circuit 7 with the work of control warning circuit; The alarm switch signal is amplified, triggers time-delay and converts the warning circuit 8 that police whistle sound is exported to; The power supply 9 that accumulator jar is charged; The under-voltage indicating circuit 10 of storage battery of indication user charging in time or replacing when accumulator jar voltage is on the low side.
Fig. 2 is the electrical schematic diagram according to a kind of preferred embodiment of the present utility model of Fig. 1 design, for the ease of diagram, Fig. 2 is divided into two parts, and wherein Fig. 2 a is the electrical schematic diagram that alerting signal produces circuit, and described alerting signal produces circuit and comprised above-mentioned ultrasonic transmitter 1, ultrasonic receiver 2, Doppler signal detecting amplifying circuit 3, password input circuit 4, electronic lock circuit 5, logic control circuit 6, alarm control circuit 7.Fig. 2 b is the electrical schematic diagram of power supply and warning circuit, referring to Fig. 2 a, JD
3, JD
4, JD
5, JD
6Four phase inverters and resistance R
36-R
39, crystal JT, ultrasonic emitting element FS constituted ultrasonic transmitter 1 jointly, phase inverter JD wherein
5, JD
6, resistance R
37-R
39And crystal JT composition oscillatory circuit, producing frequency is the square wave of 40KHz, through phase inverter JD
3, JD
4Shaping is passed through resistance R after amplifying
36Launch to the certain space zone by ultrasonic emitting element FS.According to Doppler effect, if there are objects moving in above-mentioned space, the signal that then reflects will have two kinds of different frequencies.Ultrasound wave receiving circuit 2 comprises ultrasound wave receiving element JS, and it is sent into by triode T after receiving the signal that reflects
1, T
2, resistance R
1-R
7, capacitor C
1-C
4The pre-amplification circuit of forming 31 amplifies; Capacitor C
5, C
6, diode D
1, D
2And resistance R
8Form detecting circuit 32, it will be the high-frequency signal elimination of 40KHz through the amplifying signal medium frequency, and allow low frequency signal (Doppler signal that is promptly produced by moving target) wherein pass through, and this signal is through resistance R
9, R
10, capacitor C
7Be admitted to the emitter follower JA of series connection with it
4Amplify.JA can be for example CM324 integrated transporting discharging element, wherein JA
1, JA
3Two amplifier elements and resistance R
11-R
16, capacitor C
8-C
13Constituted rejector circuit 33 jointly, the signal after amplifying has been carried out filtering, stoped wherein the power frequency interference signals of 50Hz and 100Hz to be passed through, and then this signal is sent into by JA
2And resistance R
17, R
18, capacitor C
14, C
15The low-pass filter circuit of forming 34 with elimination wherein 1.2KHz with the signal of upper frequency, after capacitor C
17Signal is sent into the shaping amplification circuit 35 of series connection with it, and described shaping amplification circuit is by the triode T as amplifier element
3, T
4, resistance R
20-R
26, capacitor C
18, as the diode D of shaping
3, D
4And be used for regulating the rheostat RP of sensitivity
1Form, the Doppler signal after amplifying through shaping is through T
4Collector output, above-mentioned pre-amplification circuit 31, detecting circuit 32, band resistance circuit 33, low pass circuit 34, shaping amplification circuit 35 have constituted Doppler signal detecting amplifying circuit 3 jointly.Shown in Fig. 2 a, password input circuit 4 of the present utility model comprises cipher inputting keyboard KB, hummer FM, light emitting diode FG
2, with by JD
1, JD
2, C
33, C
34, R
40-R
42, D
15The oscillatory circuit of forming; Electronic lock circuit 5 comprises an electronic lock JC and a capacitor C
21-C
32, resistance R
29-R
35, diode D
9-D
14And 6V power supply BT
1Wherein JC can be a UA3730 electronic lock for example, and its input end 5-11 is connected in the mode shown in scheming with each key on the cipher inputting keyboard, and 14 ends of every key entry one digit number sign indicating number JC can be exported a low level, make hummer work, send one " toot " sound.Direct current+12V power supply is by diode D
0, triode T
6, resistance R
32Be connected on the end pin 16 of JC T
6Output terminal serial connection capacitor C
24 and R
31Constitute charge circuit, diode D
9With resistance R
31Formation discharge loop in parallel.The 16 ends output of JC is by two Sheffer stroke gate SY, diode D
8Sheffer stroke gate JB with the output input logic control circuit 6 of Doppler signal detecting amplifying circuit 3
4In, and 15 ends and the JB of JC
4Output import another Sheffer stroke gate JB together
3In.JC
2Can adopt for example MC4093 two input Schmidt Sheffer stroke gate elements.JB
3Output by diode D
5, resistance R
27To capacitor C
20Charging also is added on the alarm control circuit 7.Described alarm control circuit 7 is by triode T
5, T
7, resistance R
28-R
45, diode D
7, relay J
1And light emitting diode FG
1Form, work as C
20On voltage rise to and be higher than T
5V
BEThe time, T
5Conducting, relay J
1Coil electricity excitation, the contact is transformed into B by A, makes the current potential of electric connection 5 drop to zero potential, and connect warning circuit and report to the police (stating as follows), simultaneously, on the electric connection 1+12V voltage is by diode D
0Make T
7Conducting, FG
1Luminous, showing has the invador, stores at accumulator jar under the situation of electric weight deficiency, and warning circuit can not send police whistle sound because voltage is on the low side, and this moment, the user can be according to FG
1Luminously judge that the invador is arranged.
Further describe the course of work of the present utility model below in conjunction with Fig. 2 a.Before starting working, the output terminal pin 15,16 of JC all locates noble potential " 1 ", the user is when being provided with password, elder generation's key feeding cipher connects " # " key, at this moment then, the 16 ends output of JC is changed to " 0 ", when the user need enter the security area, elder generation is key feeding cipher again, again by " # " key, at this moment, 16 ends of JC revert to " 1 " again.The current potential of JC15 end only just can be reduced to " 0 " when the stranger keys in three error codes continuously.Referring to Fig. 2 a, password is set before, 16 of JC is " 1 ", makes T
6Because of V
BEAdd forward voltage and end that+12V operating voltage can't be added to alerting signal and produce in the circuit, alerting signal can't produce, and does not therefore report to the police; After sign indicating number is set, because 16 ends of JC are reduced to " 0 ", T
6Because of base stage obtains the bias voltage conducting, R is passed through in its output
31To C
24Charging, and pass through D
9, R
31Discharge makes JB
4/ 12 are upgraded to noble potential " 1 ", at this moment, because T
6Conducting, JD
1, JD
2The oscillatory circuit of forming obtains operating voltage, and its output makes the light emitting diode FG on the cipher inputting keyboard
2Luminous, show that alarm has entered the state of alert.Simultaneously, ultrasonic receiver 2 and Doppler signal detecting amplifying circuit 3 also obtain 12V voltage and start working, if do not find moving target, T
4Be output as electronegative potential " 0 ", then JB
4Be output as " 1 ", JG/15 exports " 1 ", JB
3/ 10 are output as " 0 ", still disconnect alarm circuit; Find to have movable signal, T if establish the sign indicating number back
4Be output as " 1 ", then JB
4Be output as " 0 ", at this moment JB
3Be output as " 1 ", this noble potential is to C
20UC is worked as in charging
20Greater than T
5V
BEThe time, T
5Conducting is imported alarm circuit with alerting signal, and alarm sends police whistle sound and reports to the police; When the invador is continuous when keying in error codes three times, the current potential of JC/15 is reduced to " 0 ", at this moment, and JB
3Output one be decided to be " 1 ", connect alarm circuit; When owner need enter the security area, input once more behind the password by " # ", then 16 pin of JC are changed to " 1 ", T again
6End, the operating voltage that alerting signal produces circuit is cut off, and does not report to the police.
Fig. 2 b shows the electrical schematic diagram of power supply of the present utility model and warning circuit.Wherein, alternating current 220V power supply, transformer B201, rectifier bridge D
201-D
204, diode D
205-D
208, voltage stabilizer JC201, resistance R
201-R
204, capacitor C
201-C
204, K switch
1, the 12V accumulator jar, electric connection 1,2,5 has constituted power supply 9.When starting working, the closed K of elder generation
1, the 220V alternating current is through B
201Step-down, D
201-D
204Bridge rectifier, C
201Filtering, JC
201After the voltage stabilizing, lead up to D
207Make on the electric connection 1 to have+12V voltage and for the under-voltage indicating circuit 10 of storage battery provides voltage, another road is through R
203, K
1Accumulator jar is charged.After disconnecting AC power, alarm can be powered by accumulator jar.JE can adopt for example LM324 operational amplifier, wherein operational amplifier JE3 and resistance R
206-R
210, capacitor C
206, diode D
210, stabilivolt D
211, LED formed the under-voltage indicating circuit 10 of storage battery.Under the normal condition, if battery voltage is passed through R
208To C
206Charging, JE
3Output terminal 8 be noble potential, LED ends; When accumulator jar voltage is lower than a setting value, UC
6Reduce JE
310 terminal potentials reduce, its output correspondingly is converted to electronegative potential, the LED conducting is sent, indication user's inductive charging or replacing accumulator jar.The principle of work of warning circuit 8 is described below in conjunction with Fig. 2 b.When alarm control circuit 7 produces alerting signal is relay J
1Contacting B point the time, electric connection 5 is grounded that (see Fig. 2 a), this low level is sent into comparer JE
4In make after comparing its output terminal 14 produce noble potentials, and pass through R
213, D
212To C
207Rapid charge is through duration of charging t
1, UC
7Reach setting value, trigger JE
2State turnover output high level passes through R again
214, D
213To C
200Charging is through duration of charging t
2, touch JE
1The output high level is sent into JF
4Power end 14.Suppose that alerting signal just disappears in a short period of time, is stored in capacitor C
217On electric weight will pass through R
212Discharge, R
212Resistance is bigger, thereby discharge time is longer, during this period, and JE
2Still can keep noble potential output, and to C
200Charging is reported to the police to guarantee to trigger effectively.JF can adopt for example MC4069 six Sheffer stroke gate elements among the figure.JF
2, JF
3, resistance R
222-R
227, capacitor C
212, diode D
215, D
216Formed the oscillating signal generator, the alerting signal of generation low frequency is also sent into by JF
1, JF
6And resistance R
218-R
221, capacitor C
281-C
211The high-frequency oscillation signal generator of forming produces the siren alerting signal through modulation, and input is mainly by triode T
201-T
206In the push-pull amplifier of forming, through amplifying the siren chimes of doom of rear drive loudspeaker output high-decibel.
By among Fig. 2 as can be seen, if the invador disconnects electric connection (1) or (2), triode T in the alarm control circuit 7 then
7, operating voltage ends no current output on the electric connection 5, JE owing to being cut off
413 terminal potentials be lower than 12 ends, JE
1The output high level triggers and reports to the police.If the invador cuts off electric connection (5), to trigger warning with above-mentioned reason, as seen the invador disconnects any connecting line between alerting signal generation circuit and power supply and warning circuit, all can trigger warning circuit, so the utility model also has vandal-proof advantage.
In the described scope of the utility model claim, those skilled in the art still can make amendment to the foregoing description, and these modifications all should be thought and fall within the protection domain of the present utility model.
Claims (4)
1, a kind of Ultrasonic Intruder Alarm comprises: launch hyperacoustic ultrasonic transmitter to guard space; Receive the ultrasonic receiver of reflected signal; From reflected signal, detect movable signal and amplify, the Doppler signal detecting amplifying circuit of shaping, output; The power circuit of operating voltage is provided; Be used to produce the warning circuit of alarm sound; It is characterized in that, also comprise the password input circuit that is used to input password; Be used to judge the electronic lock circuit that whether is consistent of the password of inputing with setting code; Produce the logic control circuit of alerting signal according to the output of the output of Doppler signal detecting amplifying circuit or electronic lock circuit; Alarm control circuit according to the warning of alerting signal control warning circuit.
2, Ultrasonic Intruder Alarm as claimed in claim 1 is characterized in that, described password input circuit comprises a cipher inputting keyboard.
3, Ultrasonic Intruder Alarm as claimed in claim 1 or 2, it is characterized in that, described alarm control circuit comprises that output terminal is connected to the first transistor of relay coil and the transistor seconds of connecting with relay contact, and described the first transistor base stage is connected with described logic control circuit output terminal.
4, Ultrasonic Intruder Alarm as claimed in claim 1 or 2, it is characterized in that, described power circuit comprises and is used to provide the accumulator jar of operating voltage and the power supply that accumulator jar is charged, and also comprises the under-voltage indicating circuit of storage battery that produces indicator signal when accumulator jar voltage is lower than designated value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93225662 CN2153098Y (en) | 1993-05-04 | 1993-05-04 | Ultrasonic burglar alarm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93225662 CN2153098Y (en) | 1993-05-04 | 1993-05-04 | Ultrasonic burglar alarm |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2153098Y true CN2153098Y (en) | 1994-01-12 |
Family
ID=33803415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 93225662 Expired - Fee Related CN2153098Y (en) | 1993-05-04 | 1993-05-04 | Ultrasonic burglar alarm |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2153098Y (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101676963B (en) * | 2008-09-18 | 2011-05-18 | 北京市凯文警视技术研究所 | Invasion body detection alarm equipment and invasion body detection alarm method |
CN102074089A (en) * | 2011-01-07 | 2011-05-25 | 华南理工大学 | Active infrared anti-theft alarm |
CN105093230A (en) * | 2015-07-13 | 2015-11-25 | 安徽海澄德畅电子科技有限公司 | Acoustic wave measurement space forming apparatus |
CN105139580A (en) * | 2015-09-26 | 2015-12-09 | 国网山东省电力公司济南供电公司 | Warning device of risk points of acceptance of business expansion project |
-
1993
- 1993-05-04 CN CN 93225662 patent/CN2153098Y/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101676963B (en) * | 2008-09-18 | 2011-05-18 | 北京市凯文警视技术研究所 | Invasion body detection alarm equipment and invasion body detection alarm method |
CN102074089A (en) * | 2011-01-07 | 2011-05-25 | 华南理工大学 | Active infrared anti-theft alarm |
CN105093230A (en) * | 2015-07-13 | 2015-11-25 | 安徽海澄德畅电子科技有限公司 | Acoustic wave measurement space forming apparatus |
CN105139580A (en) * | 2015-09-26 | 2015-12-09 | 国网山东省电力公司济南供电公司 | Warning device of risk points of acceptance of business expansion project |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |