CN1045228C - Omnibearing anti-theft fireproof safety device - Google Patents
Omnibearing anti-theft fireproof safety device Download PDFInfo
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- CN1045228C CN1045228C CN 94114271 CN94114271A CN1045228C CN 1045228 C CN1045228 C CN 1045228C CN 94114271 CN94114271 CN 94114271 CN 94114271 A CN94114271 A CN 94114271A CN 1045228 C CN1045228 C CN 1045228C
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Abstract
The present invention relates to a space omnibearing anti-theft fireproof safety device which is composed of a transmitting device for generating a standing wave sound field, a receiving device which comprises a receiving sensor, etc., a corresponding control circuit of high detection sensitivity for preventing report failure and false report and an alarm terminal. The present invention is characterized in that the space omnibearing anti-theft fireproof safety device is a sound field inductance alarm device; when smoke flame or an invasion object occurs, space sound field variation is caused, and an alarm signal is sent out by the sound field inductance alarm device. Thus, functions of fire proofing, theft proofing, one machine with multiple function and omnibearing detection are achieved, because the detection sensitivity of the space omnibearing anti-theft fireproof safety device is not changed along with the change of distance and seasons (temperature), the conditions of the false report and the report failure are eliminated. The present invention has the advantages of stabilization, reliability, easy installation and low price, and is an ideal alarm device required for a long time by people.
Description
The present invention relates to a kind of space omnidirectional anti-theft fireproof safety device.
At present domestic and international antitheft intrusion detector ubiquity monitoring range little, the dead angle is arranged, easily avoided and report by mistake the drawback of failing to report by the perpetrator, the rationale that existing patent of invention " detection method of the antitheft intrusion detector of multi-dimensional standing-wave " (ZL91100644.3) is achieved is a physical influence of utilizing stationary field, adopts two bills to be received in and creates a kind of stationary field in the monitored area.And locus, rotation by the human body information that detected in the stationary field, move, multidimensional information parameter that displacement, significant height, area and time etc. form, and, judge warning through logic analysis again via correlation processing technique in the radar.Though can discern human body target effectively theoretically.Improve the reliability of detection system, reduce rate of false alarm, but need two ultrasonic transducer transponder pulse signals that valency is high, and at the warning scene is not have the foundation of failing to report with wide the reaching of ultrasound wave angle of radiation, only is not omnibearing with regard to the space, therefore is suitable for most the antitheft detection of the less cultural relics display case in space, make the complex structure of sniffer, it is limited greatly that inconvenient guard space is installed, and this obviously brings reliability and price limited, and lacks the fireproof alarming function.
The objective of the invention is to overcome above shortcoming, provide a kind of space omnidirectional and sensitivity not temperature variant reliable and stable burglar alarm.
The purpose of this invention is to provide a kind of method that has the smoke detection fire-proof function simultaneously concurrently, realize the multifunctional warning device that a machine (not needing to add again in addition any fire prevention probe or device) is used more.
For ease of understanding the present invention, narrating briefly, its principle is necessary: produce ultrasonic single frequency sinusoidal ripple signal by oscillator, promote tweeter to the space continuous radiation through power amplification, sound wave the sealing the space in after each surface reflection, become the sound wave that direction is random distribution substantially, each secondary reflection sound wave interferes with each other, and forms three-dimensional standing-wave sound field in whole space.When promptly not having moving target, the space sound field is in stable noiseless, and promptly the node of space each point standing wave, antinode are basicly stable, and this moment, the signal amplitude that receiving sensor received on the fixed position was constant substantially.Otherwise, sound field is disturbed 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 produces fluctuations thereupon, and the change frequency of its amplitude is directly proportional with the size and the movement velocity thereof of intrusion target in the sound field (exciting sound-source signal frequency one regularly), sound field that Here it is induction.Research is also found, same when somewhere in this space temperature variation and during surrounding space formation uniform temperature gradient, the local transition of the velocity of sound and the refraction of the local acoustical that produces also can cause the redistribution of whole spatial stability sound field, the signal amplitude that receiving sensor is received produces fluctuations, the frequency of its changes in amplitude is directly proportional with the thermograde at this place, surveys the generation of smog and flame with this.
The present invention is achieved in that and adopts custom-designed emitter, receiving trap and electronic control circuit that promptly the emitter that is made of oscillator, power amplifier and one or more tweeter is set up standing-wave sound field in monitored space; Receiving trap is made up of receiving sensor, frequency-selecting amplifier, wave detector, Hi-pass filter, low-pass filter, A/D converter and shaping circuit, and carry out detection and divide two-way output after the acoustical signal that receiving sensor receives 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, constitutes the zero passage detection signal of mould/number conversion circuit with the datum of low-pass filter output, and datum changes from the signal amplitude that the motion tracking receiving sensor is received.Be varied to the digital signal of direct ratio through A/D converter output and extraneous sound field, 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, export electronic control circuit to, promptly deliver to a kind of custom-designed detection sensitivity digital control circuit that sets in advance and carry out digital processing, this circuit mainly by target velocity comparison device, summary counter and detection time counter constitute, under the control of clock circuit, digital signal to shaping 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.
Give place's specific embodiments of the invention in detail below in conjunction with accompanying drawing
Fig. 1 receiving unit circuit block diagram of the present invention;
Fig. 2 radiating portion block diagram of the present invention;
Fig. 3 shell front panel of the present invention laying structure synoptic diagram;
Fig. 4 detection sensitivity automatic circuit of the present invention schematic diagram;
Fig. 5 detection sensitivity digital control circuit of the present invention schematic diagram.
The present invention is set up in enclosure space by emitter 19 and stablizes standing-wave sound field, with the air is that media is coupled with the receiving trap 20 that has receiving sensor 1, the output of this receiving trap 20 with the target velocity in shaping circuit 7 and the electronic control circuit 21 relatively device 8 link to each other, power supply 15 is supplied with necessary operating voltage, all can be installed in the shell 23 and form.
Above-mentioned emitter 19 is by oscillator 16, and power amplifier 17 that is attached thereto 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 during use.Also can separate, be installed in the appropriate location of monitoring section, as monitored area big (place such as warehouse should be improved emissive power or is provided with a plurality of with the emitters 19 of homophases frequently in monitoring section) 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 by one, the frequency-selecting amplifier 2 that is attached thereto, that continues links to each other with wave detector 3, two RC wave filter-Hi-pass filters 4 that this wave detector 3 is attached thereto and low-pass filter 5 are electrically connected with afterwards mould/number conversion circuit 6 respectively again and shaping circuit 7 is formed.As shown in Figure 4, the output signal of above-mentioned wave detector 3 is coupled to Hi-pass filter 4 and low-pass filter 5 through capacitor C1.R5 is a C1 discharge loop resistance, and R1, R3 are the input resistance of high and low pass filter, and R2, R4 are zero offset resistance.High and low pass filter constitutes the RC filter network by IC1, IC2 and peripheral cell respectively, and R6C2 and R7C3 determine the time constant of high and low pass filter respectively, and have R7C3＞＞R6C2.The signal of Hi-pass filter 4 and low-pass filter 5 is by the output terminal output of IC1 and IC2, and the holding circuit that resistance R 8, R9 and diode D1, the D2 (with the input end reverse parallel connection of A/D converter 6) that connects through the input end of A/D converter forms is sent into the zero passage detection signal of two input ends formation A/D converters of IC3.Cross-over connection resistance R 10 between the output terminal of A/D converter 6 and the in-phase input end constitutes the same phase comparator of positive feedback, and the R11 that is connected with power supply 15 anodes is a pull-up resistor.The digital signal of A/D converter 6 outputs is carried out shaping, Fixed width in case miscount by shaping circuit 7.
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 the detection sensitivity digital 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 25 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 the counting control gate of the reset terminal R controlled target speed comparator 8 of IC4, IC5; The censorship of another road is surveyed time counter 10 and is carried out time counting with to being provided with detection time.Wherein above-mentioned target velocity relatively device 8 is made up of IC5, toggle switch B1, IC4 and peripheral cell.The D end of IC4 links to each other with the Q end, and CP end ground connection constitutes the R-S trigger flip-flop.Its reset terminal R and output terminal Q count and zero clearing with opening the door of control IC5 by the reset terminal that isolating diode D4, D3 add to IC5.Detection time counter 10 output terminals A 3, the isolating diode D5 of leading up to links to each other with the reset terminal of IC6, to remove the counting of summary counter 9; Another road then links to each other with the reset terminal R of IC7 with the two poles of the earth inverter ic 8 by delay circuit R16, C4, makes counter 10 zero clearings detection time, so that the time repetitive cycling that is preset by toggle switch B3 detects.Integrated package IC5, IC6, IC7 are the BCD counter, and with its clock end CP ground connection, signal constitutes the negative edge counter: its output terminal Q by Enable Pin EN input
0～Q
3Input end 2 with plucking number sign switch
0～2
3Corresponding linking to each other, the output terminals A 1 of toggle switch B1, B2, B3, A2, A3 link to each other with power supply 15 by resistance R 13, R14, R15, constitute a kind of sensitivity digital control circuit 25.
The input end of above-mentioned alerting signal treatment circuit 13 links to each other with the output terminals A 2 of summary counter 9 toggle switch B2, and its output links to each other with external terminal devices 14 via external device interface 11 and the lead-out terminal 22 that is located on the panel.Lead-out 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 at enclosure space and set up standing-wave sound field.And utilize target travel or smog flame to cause when sound field changes, by sound reception sensor and corresponding idea control circuit and external terminal devices monitoring and the signal of handling this variation, realized new equipment antitheft, the comprehensive detection alarm of fire prevention.
In sum, the invention discloses a kind of method and apparatus that utilizes the variation while anti-theft fireproof of standing-wave sound field, not only realized as intrusion target or the comprehensive detection when smog is arranged, 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 (5)
1, a kind of omnibearing anti-theft fireproof safety device, it is by the emitter of setting up a kind of standing-wave sound field in the space [19], and the receiving trap [20] of receiving sensor [1] is arranged, corresponding electronic control circuit [21], direct supply [15] and assembling are arranged in the shell [23] to be formed, and it is characterized in that:
A), emitter [19] is by oscillator [16], power amplifier [17] and the sense of tweeter [18] group, emitter [19] is to produce ultrasonic single frequency sinusoidal ripple signal by oscillator [16], power amplifier [17] through being electrically connected with it successively amplifies the one or more tweeters of promotion [18] to space radiation, sets up standing-wave sound field in monitored space.
B), receiving trap [20] is by receiving sensor [1], frequency-selecting amplifier [2], wave detector [3], Hi-pass filter [4], low-pass filter [5], A/D converter [6] and shaping circuit [7] are formed, its receiving sensor [1] is installed on the shell [23], be connected with frequency-selecting amplifier [2] and wave detector [3] successively with receiving sensor [1], the output of wave detector [3] is coupled to Hi-pass filter [4] and low-pass filter [5] respectively through capacitor C1, the output of Hi-pass filter [4] and low-pass filter [5] links to each other with the input of A/D converter [6], the output of A/D converter [6] links to each other with shaping circuit [7], Hi-pass filter [4], low-pass filter [5] and A/D converter [6] are formed detection sensitivity automatic circuit [24].
C), electronic control circuit [21] is to compare device [8] by target velocity, summary counter [9], counter detection time [10], external device interface [11], clock circuit [12], alerting signal treatment circuit [13] is formed, pulse signal to above-mentioned receiving trap [20] output send electronic control circuit [21] to discern after shaping circuit [7] shaping, compare device [8] by target velocity, summary counter [9], counter detection time [10] constitutes detection sensitivity digital control circuit [25], size to intrusion target, translational speed and mobile duration are carried out the pattern setting, the clock signal of above-mentioned clock circuit [12] output, the unlatching and the zero clearing of one tunnel controlled target speed comparator [8], another road censorship is surveyed the input end of time counter [10] to being provided with detection time, target velocity is the output terminal of the input termination shaping circuit [7] of device [8] relatively, the target velocity relatively output terminal of device [8] links to each other with the input end of summary counter [9], the output terminal of counter detection time [10] links to each other with the control end of summary counter [9] and controls its unlatching and zero clearing, the alerting signal of summary counter [9] the output alert signal processing circuit [13] of delivering newspaper, its output is carried out impedance matching through external device interface [11], drives to be located at the external terminal devices [14] that a plurality of connection terminals [22] on shell [23] panel are connected.
Emitter [19] is set up standing-wave sound field in monitored space.With the air is that media and receiving trap [20] are coupled, and the output of receiving trap [20] is compared device [8] input end through shaping circuit [7] with the target velocity of electronic control circuit [21] and linked to each other.
2, device according to claim 1 is characterized in that above-mentioned emitter [19] and receiving trap [20] can be arranged in the monitored space with shell [23] is stripped.
3,, it is characterized in that the one or more tweeters [18] in the above-mentioned emitter [19] can be arranged in the monitored space with shell [23] is stripped according to claim 1 or 3 described devices.
4, device according to claim 1 is characterized in that and can connect the external terminal devices [14] of audible-visual annunciator or gamma camera and computer monitoring device by being located at connection terminal [22] on shell [23] panel.
5, 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 CN1125877A (en) | 1996-07-03 |
| CN1045228C true CN1045228C (en) | 1999-09-22 |
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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) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102270448B (en) * | 2010-12-31 | 2012-10-31 | 北京谊安医疗系统股份有限公司 | Alarm device |
| CN102354423B (en) * | 2011-10-12 | 2013-06-19 | 上海电机学院 | Electronic anti-theft device |
| US9594163B2 (en) * | 2013-04-15 | 2017-03-14 | Electronics And Telecommunications Research Institute | Security and surveillance system and method |
-
1994
- 1994-12-27 CN CN 94114271 patent/CN1045228C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1125877A (en) | 1996-07-03 |
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