CN1125877A - Omnibearing anti-theft fireproof safety device - Google Patents
Omnibearing anti-theft fireproof safety device Download PDFInfo
- Publication number
- CN1125877A CN1125877A CN 94114271 CN94114271A CN1125877A CN 1125877 A CN1125877 A CN 1125877A CN 94114271 CN94114271 CN 94114271 CN 94114271 A CN94114271 A CN 94114271A CN 1125877 A CN1125877 A CN 1125877A
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- China
- Prior art keywords
- circuit
- control circuit
- sound field
- detection sensitivity
- space
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- Emergency Alarm Devices (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The omnibearing-in-space anti-theft and fire-alarm apparatus is composed of transmitter generating standingwave sound field, receiver including receiving sensor, high-sensitivity controller avoiding missing and error alarm, and alarm terminal and features that when smoke, flame or intruder causes the change in sound field, it alarms, and its sensitivity is not affected by distance and temp.
Description
A kind of space omnidirectional anti-theft fireproof safety device that relates to.
Existing burglar alarm, its sensor ubiquity sensing range is little, the dead angle is arranged and limited defective is installed, and the mimic channel adjustment is adopted in the sensitivity of sensor usually, therefore, its detection sensitivity not only changes with detection range, and reports by mistake and fail to report with changing season (temperature), being easy to generate.In recent years, the ultrasonic burglar alarm that utilizes the phase place relative theory to make then must use a plurality of probes or sensor, and inconvenience is installed, and cost is also high, lacks the fireproof alarming function again.Usually the protective device that possesses two kinds of functions of anti-theft fireproof needs two sensors and corresponding apparatus at least.
The objective of the invention is to overcome above shortcoming, provide a kind of detection sensitivity not with season (temperature) and received signal amplitude (the reliable and stable warning device that detection range changes.
The present invention also aims to provide a kind of have concurrently multifunctional warning device and method antitheft and fire prevention, realization a tractor serves several purposes.
For the ease of understanding the present invention, narrating briefly, its principle is necessary: produce ultrasonic single frequency sinusoidal ripple signal by oscillator, promote tweeter to space radiation through amplifying, sound wave reflects through multiaspect in the space of sealing, form standing-wave sound field in whole space, when noiseless (promptly not having moving target), the space sound field is in stable state, the node, the antinode that are space each point standing wave are basicly stable, and this moment, the signal amplitude that receiving sensor received on the fixed position was constant substantially.Otherwise, sound field is interfered when the somewhere, space, will cause the node of whole sound field and the redistribution of antinode, the signal amplitude that causes receiving sensor to receive changes thereupon, and the change frequency of its amplitude be directly proportional with the movement velocity of sound field internal object (exciting one timing of sound-source signal frequency).Discover, same when somewhere in this sound field temperature variation and during surrounding space formation uniform temperature gradient, be the redistribution that the influence of the local acoustical refraction of the local transition of the velocity of sound and generation thereof and air-flow also can cause stablizing sound field, also will cause receiving sensor changes in amplitude frequency to be directly proportional with herein thermograde.
The present invention implements like this: the emitter that is made of oscillator, power amplifier and one or more tweeter is set, sets up standing-wave sound field in monitored space; Carry out detection and divide two-way output after the acoustical signal that receives via receiving sensor is amplified by frequency-selecting amplifier: the one tunnel send low-pass filter to obtain the datum of mould/number conversion circuit; Hi-pass filter is sent on another road, constitute the zero passage detection signal of analog-to-digital converter circuit with the datum of low-pass filter output, datum changes from the signal amplitude that the motion tracking receiving sensor is received, through A/D converter, output and extraneous sound field are varied to the digital signal of direct ratio, to guarantee that detection sensitivity does not change with the variation of season (temperature) and received signal amplitude (detection range).Promptly formed a kind of detection sensitivity automatic circuit by high and low pass filter and A/D converter.Again via after the shaping circuit shaping Fixed width, deliver to a kind of custom-designed detection sensitivity numeral (give and putting) control circuit and carry out digital processing, this circuit mainly by target velocity comparison device, summary counter and detection time counter constitute, under the clock electric control, digital signal to shaping circuit output compares, judges, and the detection sensitivity of device is carried out the numeral setting.Realize comprehensive warning by alerting signal treatment circuit, exterior terminal interface and terminal device.
Provide specific embodiments of the invention in detail below in conjunction with accompanying drawing
Fig. 1 receiving trap and detection sensitivity digital control circuit block scheme.
Fig. 2 emitter block scheme.
Fig. 3 shell front panel laying structure synoptic diagram.
Fig. 4 detection sensitivity automatic circuit schematic diagram.
Fig. 5 detection sensitivity numeral (give and putting) control circuit schematic diagram.
Wherein: 1. receiving sensor; 2. frequency-selecting amplifier; 3. wave detector; 4. Hi-pass filter; 5. low-pass filter; 6. A/D converter; 7. shaping circuit; 8. target velocity compares device; 9. summary counter; Detection time counter; 11. external device interface; 12. clock circuit; 13. alerting signal treatment circuit; 14. external terminal devices; 15. power supply; 16. oscillator; 17. power amplifier; 18. tweeter; 19. emitter; 20. receiving trap (circuit); 21. electronic control circuit; 22. output wiring terminal; 23. shell; 24. detection sensitivity automatic circuit; 25. detection sensitivity numeral (give and putting) control circuit.
The present invention sets up the emitter 19 of standing-wave sound field by the receiving trap 20 that has receiving sensor 1, corresponding electronic control circuit 21, and external end device 14 and power supply 15 5 parts and contained by shell 23 are wherein formed.
Above-mentioned emitter 19 is by oscillator 16, and power amplifier 17 and tweeter 18 are formed, as shown in Figure 2.Tweeter 18 wherein and receiving sensor 1 are arranged on shell 23 front and back panels, and Fig. 3 is the legend that is laid on the front panel, but require its radiating surface and receiving plane to be exposed at outside the panel, are not subjected to the restriction of mounting means and position etc. during use.Also can separate, be installed in the appropriate position in the monitored area, should improve emissive power or in monitoring section, be provided with a plurality of with the emitters 19 of homophases frequently as monitored area big places such as () warehouses with shell 23.Obviously improve emissive power and layout to good with one or more tweeters 18.One of 1 usefulness of receiving sensor gets final product.
As shown in Figure 1, receiving trap 20 is to receive only sensor 1, frequency-selecting amplifier 2, wave detector 3 and two the RC wave filters---Hi-pass filter 4 and the low-pass filter 5 that are attached thereto, mould afterwards/number conversion circuit 6 and shaping circuit 7 compositions by one.As shown in Figure 4, the output signal of above-mentioned wave detector 3 is through capacitor C
1Be coupled to Hi-pass filter 4 and low-pass filter 5.R
5Be C
1Discharge loop resistance, R
1, R
3Be the input resistance of high and low wave filter, R
2, R
4Be zero inclined to one side value resistance.High and low pass filter is respectively by IC
1(1/2 LM353), IC
2(1/2 LM353) and peripheral cell constitute RC filter network, R
6C
2And R
7C
3Determine the time constant of high and low pass filter respectively, and R is arranged
7C
3" R
6C
2The signal of Hi-pass filter 4 and low-pass filter 5 is by IC
1And IC
2Output terminal output, the resistance R through connecting with the input end of A/D converter
8, R
9With diode D
1, D
2The holding circuit that (with the input end reverse parallel connection of A/D converter 6) formed is sent into IC
3(LM339) two input ends constitute the zero passage detection signal of A/D converter.Cross-over connection resistance R between the output terminal of A/D converter 6 and the in-phase input end
10, constitute the same phase comparator of positive feedback, the R that is connected with power supply 15 anodes
11Be pull-up resistor.The digital signal of A/D converter 6 outputs is carried out shaping, Fixed width by shaping circuit 7, in case the misdescription number.
Above-mentioned receiving sensor 1 can be selected electret microphone for use, and tweeter 18 should be selected the magnetic fluid loudspeaker for use.
As shown in Figure 1, above-mentioned electronic control circuit 21 is mainly by detection sensitivity numeral (give and the putting) control circuit 25 that numeral is provided with is carried out in the sensitivity of device, clock circuit 12 is formed the alerting signal treatment circuit 13 that is provided with and the external device interface 11 that can start external terminal devices 14 such as length of time of fire alarming.Wherein, target velocity is device 8, summary counter 9 and detection sensitivity digital control circuit that detection time, counter 10 constituted relatively, as shown in Figure 5.Under the control of clock circuit 12, the digital signal of shaping circuit 7 output is handled and the detection sensitivity of definite device.As shown in Figure 5, the clock pulse signal of clock circuit 12 outputs, the one tunnel send IC
4, IC
5The counting control gate of reset terminal R controlled target speed comparator 8; Another road censorship is surveyed time counter 10 and is carried out time counting.Wherein above-mentioned target velocity compares device 8 by IC
5, toggle switch (or DIP switch) B
1, IC
4And peripheral cell is formed.IC
4D end link to each other with the Q end, CP holds ground connection, formation R-S trigger flip-flop.Its reset terminal R and output terminal Q are by isolating diode D
4, D
3Add to IC
5Reset terminal, with control IC
5Open the door the counting and zero clearing.Detection time counter 10 output terminals A
3, lead up to isolating diode D
5With IC
6Reset terminal link to each other, to remove the counting of summary counter 9; Another road is then by delay circuit R
16C
4With the two poles of the earth inverter ic
8(CD40106) and IC
7Reset terminal R link to each other, make counter O reset detection time, so that press toggle switch B
3The time repetitive cycling of putting of giving detects.Integrated package IC
5, IC
6, IC
7Be the BCD counter, with its clock end CP ground connection, signal constitutes the negative edge counter by Enable Pin EN input; Its output terminal Q
0～Q
3Input end 2 with toggle switch (or DIP switch)
0～2
3Corresponding continuous, toggle switch B
1, B
2, B
3Output terminals A
1, A
2, A
3Pass through resistance R
13, R
14And R
15Link to each other with power supply 15, constitute a kind of sensitivity digital control circuit 25.
The toggle switch B of the input end of above-mentioned alerting signal treatment circuit 13 and summary counter 9
2Output terminals A
2Link to each other, its output links to each other with external terminal devices 14 via external device interface 11 and the output wiring terminal 22 that is located on the panel.Output wiring terminal 22 has a plurality of, can link to each other with external terminal devices such as audible-visual annunciator, gamma camera and computer monitoring devices as required to realize reporting to the police.
The invention provides and in enclosure space, set up standing-wave sound field, and utilize target travel or smog flame to cause when sound field changes, by sound reception sensor and respective electronic control circuit and external terminal devices monitoring and the signal of handling this variation, realized the new method of fire prevention, antitheft comprehensive detection alarm.
In sum, the invention discloses a kind of method and apparatus that utilizes the variation while fire-proof and theft-proof of standing-wave sound field, not only realized the comprehensive detection when smog flame or intrusion target, and its detection sensitivity does not change with the distance and the variation in season (temperature), eliminated and reported by mistake and fail to report, reliable and stable, easy for installation, low price is people's desirable warning devices of day expectation for a long time.
Claims (8)
1. one kind relates to the space omnidirectional anti-theft fireproof safety device, it is characterized in that it is by the emitter [19] of setting up standing-wave sound field in the space, the receiving trap [20] that has receiving sensor [1], corresponding electronic control circuit, external terminal devices [14], direct supply [15] and contained by shell [23] is wherein formed, and
A). emitter [19] is that a power amplifier [17] and a corresponding tweeter [18] constitute by the prison device [16] that shakes;
B). receiving trap [20] is to receive only sensor [1], frequency-selecting amplifier [2], wave detector [3] and detection sensitivity automatic circuit [24] and shaping circuit [7] composition by one;
C). electronic control circuit [21] is mainly by detection sensitivity numeral (give and putting) control circuit [25], clock circuit [12], alerting signal treatment circuit [13] and the external device interface [11] that can start external terminal devices [14] are formed, and carry out impedance matching via external device interface [11], connect external terminal devices [14] respectively by a plurality of output wiring terminals [22] that are located on shell [23] panel thereafter.
2. device according to claim 1, it is characterized in that utilizing the standing-wave sound field in enclosure space, set up and target travel or smog flame to cause when sound field changes, via receiving sensor [1], monitorings and the signal of handling this variation such as corresponding electronic control circuit [21], the new method of realization fire prevention simultaneously, antitheft comprehensive detection alarm.
3. device according to claim 1 is characterized in that above-mentioned emitter [19] and receiving trap [2] can be arranged in the monitoring space with shell [23] is stripped.
4. according to claim 1 or 3 described devices, it is characterized in that in the above-mentioned emitter [19] one or many tweeters [18] can exsomatize with shell [23] be arranged in the monitoring space.
5. device according to claim 1, it is characterized in that above-mentioned detection sensitivity automatic circuit [24] is by two RC wave filter-Hi-pass filters [4] that link to each other with wave detector [3] and low-pass filter [5], and the A/D converter that is attached thereto [6] is formed.
6. device according to claim 1 is characterized in that relatively form by device [8], summary counter [9] and counter detection time [10] by target velocity for above-mentioned detection sensitivity numeral (give and putting) control circuit [25].
7. device according to claim 1 is characterized in that said external end device [14] can be an audible-visual annunciator, gamma camera and computer monitoring device.
8. device according to claim 1 is characterized in that above-mentioned tweeter [18] can select the magnetic fluid loudspeaker for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94114271 CN1045228C (en) | 1994-12-27 | 1994-12-27 | Omnibearing anti-theft fireproof safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94114271 CN1045228C (en) | 1994-12-27 | 1994-12-27 | Omnibearing anti-theft fireproof safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1125877A true CN1125877A (en) | 1996-07-03 |
| CN1045228C CN1045228C (en) | 1999-09-22 |
Family
ID=5037167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94114271 Expired - Lifetime CN1045228C (en) | 1994-12-27 | 1994-12-27 | Omnibearing anti-theft fireproof safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1045228C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102270448A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Alarm device |
| CN102354423A (en) * | 2011-10-12 | 2012-02-15 | 上海电机学院 | Electronic anti-theft device |
| CN104112324A (en) * | 2013-04-15 | 2014-10-22 | 韩国电子通信研究院 | Security And Surveillance System And Method |
-
1994
- 1994-12-27 CN CN 94114271 patent/CN1045228C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102270448A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Alarm device |
| CN102270448B (en) * | 2010-12-31 | 2012-10-31 | 北京谊安医疗系统股份有限公司 | Alarm device |
| CN102354423A (en) * | 2011-10-12 | 2012-02-15 | 上海电机学院 | Electronic anti-theft device |
| CN102354423B (en) * | 2011-10-12 | 2013-06-19 | 上海电机学院 | Electronic anti-theft device |
| CN104112324A (en) * | 2013-04-15 | 2014-10-22 | 韩国电子通信研究院 | Security And Surveillance System And Method |
| CN104112324B (en) * | 2013-04-15 | 2016-12-07 | 韩国电子通信研究院 | Security and surveillance system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1045228C (en) | 1999-09-22 |
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