CN101676963A - Invasion body detection alarm equipment and invasion body detection alarm method - Google Patents
Invasion body detection alarm equipment and invasion body detection alarm method Download PDFInfo
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- CN101676963A CN101676963A CN200810222386A CN200810222386A CN101676963A CN 101676963 A CN101676963 A CN 101676963A CN 200810222386 A CN200810222386 A CN 200810222386A CN 200810222386 A CN200810222386 A CN 200810222386A CN 101676963 A CN101676963 A CN 101676963A
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Abstract
The invention provides invasion body detection alarm equipment which comprises a transmitting-receiving module (1) and an analysis module (2) which are interconnected, wherein, the transmitting-receiving module (1) is used for transmitting pulse signals and receiving backwaves, carrying out analog digital conversion on the received backwaves to obtain current backwave data, and sending the currentbackwave data into the analysis module (2). The analysis module (2) comprises an invasion body determining unit (22) and an alarm signal generation unit (21), wherein, the invasion body determining unit (22) is used for comparing the current backwave data received from the transmitting-receiving module with the preset environment backwave data to determine whether invasion bodies exist or not; and the alarm signal generation unit (21) is used for generating an alarm signal when invasion bodies are determined to exist. As a digital signal processing technology is adopted, the invasion body detection alarm equipment provided by the invention has an intelligent data analysis function, can adjust parameters according to environmental changes, and has the advantage of highly accurate alarm.
Description
Technical field
The present invention relates to safety protection field, more particularly relate to a kind of invasion body detecting alarm and invasion body detection alarm method.
Background technology
The security protection problem concerns people's the security of the lives and property, is the focus that people pay close attention to always.Security strength is all being strengthened in various places, and various types of panalarms also arise at the historic moment.Yet the security protection strength of common buildings such as residential building, mansion is comparatively weak at present, and these common buildings just become offender's target, and the case of climbing the building burglary in recent years happens occasionally, and seriously jeopardizes broad masses of the people's interests.
Current, security alarm equipment commonly used mainly comprises Infrared intrusion detector, microwave alarm, voice-control alarm device, ultrasound wave alarm, camera surveillance etc.
Wherein, it is straight line that Infrared intrusion detector is taken precautions against line, and the scope of deploying troops on garrison duty is little, and cost is higher, is subjected to the influence of sunlight, air-conditioning etc. bigger, is unsuitable for outdoor mounted.Microwave alarm mainly contains two kinds of transmitting-receiving split type microwave alarm and microwave intrusion alarm units, receive and dispatch split type microwave alarm and adopt the split type equipment of transmitting-receiving, forming the microwave wall between transmitter and receiver deploys troops on garrison duty, its defence line is non-directional, and microwave penetration power is strong, when being installed in outside the mansion, the electromagnetic field of its radio frequency has same warning sensitivity for indoor activity personnel and outdoor climbing personnel, very easily wrong report; The microwave intrusion alarm unit adopts the radar Doppler principle to judge whether that according to the Doppler shift of the echo that receives the someone invades, but because microwave penetration power is strong, this alarm still can not reach the effect that the indoor activity personnel are shielded, and the metal object in the environment is stronger to microwave reflection, form detection blind area behind at large-area objects such as air-conditioning cabinets easily, cause the strick precaution leak.Voice-control alarm device cost is lower, but the rate of false alarm height only is applicable to comparatively quietly place, is unsuitable for the outer noisy environment of city building.The existing supersonic invasion detector in market, by ultrasonic transmitter emission ultrasound wave, if any the moving target reflection, then echo frequency and former transmission frequency will have Doppler frequency difference in coverage, and this frequency difference then causes warning; This equipment is more cheap, and than microwave invasion formula detector, because ultrasound wave is so strong unlike microwave penetration power, so the activity of indoor occupant is difficult for causing wrong report, is relatively to be fit to the strick precaution detector that family uses at present.
But present this simple supersonic invasion detector, microwave intrusion detector, all be to utilize mimic channel that Doppler shift is compared to determine whether to report to the police, and can not carry out intellectual analysis to data, and exemplary shortcomings with mimic channel, easily occurrence temperature skew, the humiture poor stability is very easily reported by mistake in the outdoor application that environmental change is bigger.
Summary of the invention
The present invention is directed to existing alarm and alarm method uses simulating signal can not carry out intellectual analysis, poor stability, shortcoming that rate of false alarm is high, a kind of invasion body detecting alarm and invasion body detection alarm method are provided, and this alarm and alarm method possess intellectual analysis function and advantages of higher stability and lower rate of false alarm.
A kind of invasion body detecting alarm provided by the invention, this alarm comprises interconnective transceiver module and analysis module, wherein, described transceiver module is used for the transponder pulse signal and receives echo, described analysis module is used for having determined whether that according to the echo that receives from transceiver module invasion body exists, and the echo that is used for receiving carries out analog to digital conversion, obtain current echo data, and should the pre-echo data be sent to analysis module, described analysis module comprises: the invasion body determining unit is used for described current echo data and default environment echo data are compared to determine whether invasion body exists; With the alerting signal generation unit, be used for when defining invasion body and exist, generating alerting signal.
Invasion body detecting alarm provided by the invention, transceiver module emission and received pulse signal have been adopted, such as being preferably emission and received pulse formula ultrasound wave, analysis module becomes digital signal as current echo data the conversion of signals that receives then, and should the pre-echo data and default environment echo data compare, determine whether to report to the police by the variation of the environmental data that is relatively drawn; And panalarm of the prior art mostly is the probing wave of certain type of emission, then analogue echo is directly carried out Doppler relatively, difference time of arrival of pressing echo is sampling quantity, carries out the processing and amplifying of mimic channel, and judging has the mobile of object and send warning message in the investigative range.Than prior art, the present invention then is a Design of digital, no longer by determining that Doppler shift judges whether that the someone invades, promptly no longer adopt the mimic channel of judging Doppler shift, thus overcome mimic channel intrinsic shortcomings such as temperature drift.Simultaneously, owing to earlier the echoed signal that receives is converted to digital signal according to alarm of the present invention, carry out data more relatively, its digitized degree increases greatly like this, can handle and change a lot of parameters, can carry out multiple intelligent the processing to data.And, the fixed object that can regularly discern surrounding environment according to preferred implementation of the present invention upgrades default environment echo data and regularly manifests the default environment echo data change that causes because of weather such as rain, snow, wind in the environment-identification, to realize intelligent environment identification, intelligent sensitivity adjusting, and have the identification of intelligent wisp, intelligent alarm defines and function such as intelligence system maintenance, preferred implementation of the present invention makes alarm can adapt to different environment, and realizes the better compromise of sensitivity and rate of false alarm.
Description of drawings
Fig. 1 is the composition frame chart of invasion body detecting alarm provided by the invention;
Fig. 2 is the composition frame chart of the transceiver module of invasion body detecting alarm provided by the invention;
Fig. 3 is that the master that the probe of invasion body detecting alarm provided by the invention is provided with direction looks synoptic diagram;
Fig. 4 looks synoptic diagram for the left side that the probe of invasion body detecting alarm provided by the invention is provided with direction;
Fig. 5 is provided with the schematic top plan view of direction for the probe of invasion body detecting alarm provided by the invention.
Embodiment
As shown in Figure 1, a kind of invasion body detecting alarm provided by the invention, this alarm comprises interconnective transceiver module 1 and analysis module 2, wherein, described transceiver module 1 is used for the transponder pulse signal and receives echo, described analysis module 2 is used for having determined whether that according to the echo that receives from transceiver module 1 invasion body exists, and the echo that is used for receiving carries out analog to digital conversion, obtain current echo data, and should the pre-echo data be sent to analysis module 2, described analysis module 2 comprises: invasion body determining unit 22 is used for described current echo data and default environment echo data are compared to determine whether invasion body exists; With alerting signal generation unit 21, be used for when defining invasion body and exist, generating alerting signal.
Wherein, invasion body mainly refers to human body, people such as the climbing buildings, the variation that enters the echo that can cause original environment of invasion body, and the echo that petty action objects such as the variation of the echo of original environment that human body causes and flying bird cause changes different, according to variation and intensity of variation, can determine invasion body and whether exist like this when pre-echo and original environment echo.
The signal that transceiver module 1 is launched can be microwave commonly used, ultrasound wave etc., and the activity that is preferably the indoor occupant of the buildings that the not too high ultrasound wave of penetration capacity installed to avoid causes wrong report.The probe that is used to transmit and receive signal that can comprise several sensing different directions in the transceiver module 1, so that the signal of its emission can farthest cover the building exterior domain, preferably, invasion body detecting alarm provided by the invention comprises 4 probes that are arranged on the base, these 4 probes point to 4 specific directions as described in Table 1 of the present invention's design, with the phased approach setting that cooperatively interacts that takes turns to operate, make when invasion body detecting alarm provided by the invention is installed on the mansion exterior wall, can arrange a fan-shaped strick precaution zone, expand the level detection scope as far as possible, directivity is pointed to a left side, the right side and below, be not subjected to the interference of wall, direction in the directive building wall is not surveyed the invasion body that all directions are climbed outside wall comprehensively, realizes the comprehensive covering of search coverage.If these 4 probes are respectively first probe 11, second probe 12, the 3rd probe the 13 and the 4th probe 14, Fig. 3, the front view that Fig. 4 and Fig. 5 show respectively, left view and vertical view, with reference to Fig. 3, Fig. 4 and Fig. 5, setting has X-axis, the rectangular coordinate system of Y-axis and Z axle, with described four probe mounting faces is the XY plane, then XZ plane and YZ plane are respectively perpendicular to XY plane and orthogonal, described first probe 11, second probe 12, the 3rd probe the 13 and the 4th probe 14 centers on the reset of described rectangular coordinate system respectively at X-axis and Z axle positive axis, in the space of the negative axle definition of Y-axis, and with respect to the negative rotational symmetry of Y-axis, first projection of probe the 11 and the 4th probe 14 outgoing center line on the YZ plane is φ with the angle of negative of Y-axis, 85 °≤φ≤95 ° wherein, φ=90 ° preferably, first projection of probe the 11 and the 4th probe 14 outgoing center line on the XZ axle is respectively α and β with the angle of negative of X-axis, 0 °≤α≤120 ° wherein, 60 °≤β≤180 °, can be according to the needs manual adjustments of erecting stage, α=30 ° preferably, β=150 °, and the angle of first projection of probe the 11 and the 4th probe 14 outgoing center line on the XY plane and negative of X-axis is respectively δ and γ, wherein-5 °≤and δ≤5 °, 175 °≤γ≤185 °; δ=0 ° preferably, γ=180 °; Second projection of probe the 12 and the 3rd probe 13 outgoing center line on the YZ plane is θ with the angle of negative of Y-axis, 25 °≤θ≤35 ° wherein, θ=30 ° preferably, second projection of probe the 12 and the 3rd probe 13 outgoing center line on the XY plane is respectively 60 ° and 120 ° with the angle of the negative axle of X-axis, and projection and the X-axis angle born spool of the outgoing center line of second probe the 12 and the 3rd probe 13 on the XZ plane is respectively 30 ° and 150 °.Clearly show that the projection of outgoing center line on XY plane, XZ plane and YZ plane and the angle relation of negative axle of X-axis and the negative axle of Y-axis of first probe, 11, second probe the 12, the 3rd probe the 13 and the 4th probe 14 in the table 1.And, use in order more to help outdoor mounted, probe uses the one-piece construction of plastics, and aspect weather proof, be not to adopt picture seal approach in the past, and be to use the water conservancy diversion means, promptly allow sleet water to infiltrate, and groove is set at the outside surface of each probe, and by groove sleet water water conservancy diversion is flowed out to the bottom of invasion body detecting alarm, avoiding rainwater to stockpile influences the detecting function of sniffer.Like this relatively simple for structure also helps heat radiation, processing and install all more convenient.
Table 1
As shown in Figure 2, at first production burst formula of signal generating unit ultrasonic signal in the transceiver module 1, through the timesharing gauge tap, be sent to 4 power amplification units and 4 impedance matching units respectively, arrive corresponding 4 probes: first probe 11, second probe 12, the 3rd probe the 13 and the 4th probe 14, probe is pressed phased approach sequential firing radar pulse formula ultrasound wave then, and receive the echo that reflects by near object, these echoes are come echo is carried out high multiple through a timesharing two-stage amplifier and a distance change times amplifier, the processing and amplifying of high s/n ratio, its middle distance becomes times amplifier can carry out the amplification of different multiples on demand to adapt to the detection to invasion body to the echo of different distance, echoed signal after process is amplified is again through filtering circuit and shaping circuit, convert digital signal to the analogue echo that will receive, with as being used for carrying out the current echo data that follow-up invasion body is judged.A processor can be set in transceiver module 1, timesharing gauge tap in the control transceiver module 1, timesharing two-stage amplifier, distance become times amplifier and filtering circuit and shaping circuit, the shooting sequence, radar pulse formula of realizing managing a plurality of probes surveyed and received the switching between sequential, a plurality of probe and the adjustment of enlargement factor etc. and handle operation, and this processor can be integrated in the inside as integrated circuit GM3101.
Digital signal after invasion body determining unit 22 will be changed and default environment echo data compare, and exist to have determined whether invasion body (mainly being human body).Described analysis module 2 also comprises the administrative unit 23 that is connected to AD conversion unit 21 and invasion body determining unit 22, this administrative unit 23 is used for when an environment starts described invasion body alarm first, start the self study program the current echo data that receives from transceiver module 1 is stored as default environment echo data, promptly realize the function of the environmental data when identification does not have invasion body automatically; And after starting, participate in described default environment echo data relatively to described invasion body determining unit 22 outputs.And, described default environment echo data can also periodically trigger automatically and upgrade or the manual triggers renewal, promptly this alarm can periodically carry out surrounding environment identification is updated periodically default environment echo data, perhaps upgrade default environment echo data according to operator's manual triggers, after promptly environment is newly installed object (for example air-conditioning cabinet) around, again the environment echo data is preset in memory, preferably, described invasion body detecting alarm can periodically be preset the renewal of environmental data in the safety detection process, and does not influence this invasion body detecting alarm and carry out safety detection.Like this, just make invasion body detecting alarm provided by the invention have self study, self-adjusting ability, can regularly detect and upgrade default environment echo data and for the adjustment of default environment echo data and upgrade the operate as normal that does not influence the invasion body detecting alarm.
Described invasion body determining unit 22 determines whether to exist invasion body in various degree according to current echo data and default environment echo data.For the difference that compares both, the known in those skilled in the art various information that can compare in the echo data to be comprised, in simple terms, what and the duration that can mainly compare echo quantity, increase than the quantity of default environment echo data at current echo data promptly that to reach default increment above and continue to increase when reaching the Preset Time value, then determine the invasion body existence.Then described invasion body determining unit 22 can determine as follows whether invasion body exists: determine current echo quantity from current echo data; From default environment echo data, determine default environment echo quantity; Current echo quantity and default environment echo quantity are compared; And increase than default environment echo quantity in current echo quantity and to reach default increment and continue to increase when reaching the Preset Time value, determine that invasion body exists; Wherein, but described default increment and described Preset Time value are provided with by described administrative unit 23 and automatic or manual by the software adjustment, thereby can adjust the sensitivity of invasion body detecting alarm and reduce rate of false alarm.
Preferably, invasion body detecting alarm provided by the invention also has the classifying alarm function, waits the alarm operation that carries out in various degree according to the degree of closeness of invasion body, the speed of invasion body invasion.Like this, described invasion body determining unit 22 also is used for the positional information of determined invasion body, movable information etc. are sent to described alerting signal generation unit 21.Alerting signal generation unit 21 sends the alerting signal of different stage according to the information that obtains from invasion body determining unit 22, for example, if invasion body is far away and movement velocity is then sent the lower alerting signal of rank slowly, and invasion body is nearer or the invasion body admission velocity is very fast, then sends the higher alerting signal of rank.For instance, described alerting signal generation unit 21 can send the multistage alerting signal of the degree of closeness of representing invasion body and described invasion body detecting alarm according to the positional information of this invasion body; Described administrative unit 23 also is used to be provided with and automatic or manual is used for described alerting signal generation unit 21 by the software adjustment and sends multistage alerting signal value of defining of the invasion body degree of closeness of representative separately.For example can send three grades of alerting signals, send the first order alerting signal when invasion body is distant in order to light alarm lamp, to send the second level alerting signal when invasion body is reacceesed in order to light alarm lamp and to send alarm sound and invasion body sends third level alerting signal in order to light alarm lamp and to send alarm sound and report alarm host machine when very near.Equally, described alerting signal generation unit 21 can also be divided different alert levels with other information about invasion body such as admission velocities according to the degree of closeness of invasion body, does not repeat them here.Described alerting signal generation unit 21 can adopt bus mode known in those skilled in the art or radio communication mode to transmit warning message to alarm host machine.In addition, invasion body detecting alarm provided by the invention also can integrated with alarming function, be that described invasion body detecting alarm can also comprise the alarm module 3 that is connected to analysis module 2, this alarm module 3 comprises at least one in warning lamp, alarm bell and the alarm host machine, and this alarm module 3 is used for triggering in warning lamp, alarm bell and the alarm host machine of alarm module 3 at least one according to the alerting signal that described alerting signal generation unit 21 sends.Such as, aforesaid three grades of warning functions, the warning lamp that the first order alerting signal of alerting signal generation unit 21 triggers in the alarm module 3 starts, warning lamp and alarm bell that second level alerting signal can trigger in the alarm module 3 start, warning lamp and alarm bell that third level alerting signal can trigger in the alarm module 3 start, and warning message is reported to alarm host machine.Alarm host machine can adopt mode known in those skilled in the art to finish and collect and handle warning message, and get in touch the function of communication with the security protection center, so that the alert that takes place is reported fast, alarm host machine can also be born the function of downward test, detection simultaneously, i.e. test at any time detects the working condition of the equipment that sends warning message, guarantees the performance of system.
The present invention also provides a kind of invasion body detection alarm method, and wherein, this invasion body detection alarm method comprises: the transponder pulse signal also receives echo; To receive to such an extent that echo converts digital signal to as current echo data; Described current echo data and default environment echo data are compared to determine whether invasion body exists; And when defining invasion body and exist, generate alerting signal.
Similar with invasion body detecting alarm provided by the invention, in invasion body detection alarm method provided by the invention, be preferably transponder pulse formula ultrasound wave.The current echo data that obtains first can be stored as default environment echo data, and this default environment echo data can be by periodically automatic or manual renewal.Described alerting signal can be the degree of closeness of representative invasion body, the multistage alerting signal of admission velocity, and described invasion body detection alarm method also comprises according to one in the multistage alerting signal of the degree of closeness of this representative invasion body and triggers in warning lamp, alarm bell and the alarm host machine at least one.Employed various parameters can be updated periodically in the described invasion body detection alarm method.
The intellectual analysis function that can realize in use invasion body detecting alarm provided by the invention is further described below.
At first, invasion body detecting alarm provided by the invention possesses intelligent environment data identification function, after the three unities newly installs and switches on, environment around can remembering earlier, be transceiver module 1 transponder pulse formula ultrasound wave and receive echo and the echoed signal that receives is sent to analysis module 2, analysis module 2 with the analog echo signal that received through multistage amplification and convert digital signal to, participate in default environment echo data relatively in working order the time as the invasion body detecting alarm with this, when the people invades, just can analyze the echoed signal that is different from the default environment echo data of being remembered easily, and then define people's invasion and the initiation warning.And, this invasion body detecting alarm then provided by the invention can also periodically be discerned surrounding environment, when surrounding environment is newly installed some fixed objects, for example, air-conditioner outdoor unit has been installed, and this invasion body detecting alarm then provided by the invention can be updated periodically default environment echo data, participates in comparison with the default environment echo data after this renewal and invades to determine whether the someone, such as, the someone climbs etc. suddenly.
In addition, in general, panalarm of the prior art defining between sensitivity and wrong report fixed, when natural conditions around change, during such as blowing and raining, when perhaps temperature variation was big, rate of false alarm just must be than the rate of false alarm height under the good weather condition.Yet, invasion body detecting alarm provided by the invention can have the intelligent sensitivity adjusting function according to weather condition, promptly can change sensitivity and the more excellent of rate of false alarm that default sensitivity obtains different disturbed conditions under according to the variation of external interference at any time and trade off.With obtaining synchronously of default environment echo data, after invasion body detecting alarm provided by the invention is in place, the default environment echo data of administrative unit 23 memories in the analysis module 2 of this alarm, the echo that weather condition etc. was disturbed around this default environment echo data had comprised, every certain cycle, alarm is just discerned once more and is upgraded default environment echo data, and the default environment echo data after upgrading has so just comprised the echo of the surrounding environment under new weather condition.Participate in relatively with the default environment echo data that obtains like this, the interference of environment on every side such as weather condition can be taken into account, and correspondingly adjust invasion body determining unit 22 needed default parameters, thereby adjust the sensitivity of invasion body detecting alarm, improve the warning accuracy and reduce rate of false alarm.
Moreover, supersonic invasion detector of the prior art, be the existence of determining invasion body according to the Doppler shift of dynamic object echo, so just can not be subjected to with avoiding non-human body dynamic wisp the influence that enters and cause wrong report, report to the police etc. such as having bird to fly over to cause.Yet, invasion body detecting alarm provided by the invention is not the Doppler shift of comparison echo, but convert echoed signal to analysis and comparison that digital signal is carried out data, like this, because the increase and the duration and inequality of the quantity of the echo that the increase of the quantity of the echo that causes of wisp, duration etc. and human body cause, the digital signal that echoed signal converted to directly handled to carry out to digital signal that echo is accelerated and the analysis of duration, and then realize intelligent wisp recognition function.
For realizing the warning safeguard function better, invasion body detecting alarm provided by the invention has also added the classifying alarm function, divide alert levels such as degree of closeness according to invasion body, propose alarm with different modes, the setting of alert levels and the value of defining of alert levels can be adjusted as required at any time.
When using invasion body detecting alarm provided by the invention, its installation site can be selected as required, such as being installed near hugging the bottom to prevent upwards climbing, perhaps can being installed on to sentence near roof and preventing to climb downwards from the top; Can independently install and use, handle, also can use by concentrating type, handle as the security alarm of whole building mansion as sole user's security alarm.Invasion body detecting alarm provided by the invention owing to used Digital Signal Processing, makes system have the intelligent data analytic function, thereby can realize the accuracy of reporting to the police better, can fully satisfy the outdoor warning needs that the resident hugs.
Claims (13)
1, a kind of invasion body detecting alarm, this alarm comprises interconnective transceiver module (1) and analysis module (2), it is characterized in that, described transceiver module (1) is used for the transponder pulse signal and receives echo, and the echo that is used for receiving carries out analog to digital conversion and obtains current echo data, and should the pre-echo data be sent to analysis module (2), described analysis module (2) comprising: invasion body determining unit (22), and the current echo data and the default environment echo data that are used for receiving from described transceiver module (1) compare to determine whether invasion body exists; With alerting signal generation unit (21), be used for when defining invasion body and exist, generating alerting signal.
2, invasion body detecting alarm according to claim 1, wherein, described analysis module (2) also comprises the administrative unit (23) that is connected to described invasion body determining unit (22), this administrative unit (23) is used for when starting described invasion body alarm, to store as default environment echo data from the current echo data that transceiver module (1) receives, and after starting, participate in default environment echo data relatively to invasion body determining unit (22) output.
3, invasion body detecting alarm according to claim 2, wherein, the periodically automatic triggering of default environment echo data quilt of storage in the described administrative unit (23) upgrades or manual triggers is upgraded.
4, invasion body detecting alarm according to claim 2, wherein, described invasion body determining unit (22) determines as follows whether invasion body exists:
From current echo data, determine current echo quantity;
From default environment echo data, determine default environment echo quantity;
Current echo quantity and default environment echo quantity are compared; And
Increase than default environment echo quantity in current echo quantity and to reach default increment, and continue to increase when reaching the Preset Time value, determine that invasion body exists, wherein said default increment and described Preset Time value are provided with by automatic or manual by described administrative unit (23).
5, invasion body detecting alarm according to claim 2, wherein, described invasion body determining unit (22) also is used for determining from the comparison of current echo data and default environment echo data the positional information of invasion body, and the positional information of this invasion body is sent to described alerting signal generation unit (21), described alerting signal generation unit (21) sends the multistage alerting signal of the degree of closeness of representing invasion body and described invasion body detecting alarm according to the positional information of this invasion body; The multistage alerting signal that described alerting signal generation unit (21) the sends value of defining of the invasion body degree of closeness of representative separately is provided with by automatic or manual by described administrative unit (23).
6, invasion body detecting alarm according to claim 1, this invasion body detecting alarm also comprises the alarm module (3) that is connected to analysis module (2), this alarm module (3) comprises at least one in warning lamp, alarm bell and the alarm host machine, and this alarm module (3) is used for triggering in warning lamp, alarm bell and the alarm host machine of alarm module (3) at least one according to the alerting signal that described alerting signal generation unit (21) sends.
7, invasion body detecting alarm according to claim 1, wherein, the pulse signal of described transceiver module (1) emission is the pulsating ultrasound ripple.
8, invasion body detecting alarm according to claim 1, wherein, described transceiver module (1) comprises 4 probes that are used to transmit and receive signal, these 4 probes are respectively first probe (11), second probe (12), the 3rd probe (13) and the 4th probe (14), setting has X-axis, the rectangular coordinate system of Y-axis and Z axle, with described four probe mounting faces is the XY plane, then XZ plane and YZ plane are respectively perpendicular to XY plane and orthogonal, described first probe (11), second probe (12), the 3rd probe (13) and the 4th probe (14) center on the reset of described rectangular coordinate system respectively at X-axis and Z axle positive axis, in the space of the negative axle definition of Y-axis, and with respect to the negative rotational symmetry of Y-axis, the angle that projection and the Y-axis of outgoing center line on the YZ plane of first probe (11) and the 4th probe (14) born spool is φ, 85 °≤φ≤95 ° wherein, the angle that projection and the X-axis of outgoing center line on the XZ axle of first probe (11) and the 4th probe (14) born spool is respectively α and β, 0 °≤α≤120 ° wherein, 60 °≤β≤180 °, and the angle that projection and the X-axis of outgoing center line on the XY plane of first probe (11) and the 4th probe (14) born spool is respectively δ and γ, wherein-5 °≤and δ≤5 °, 175 °≤γ≤185 °; The angle that projection and the Y-axis of outgoing center line on the YZ plane of second probe (12) and the 3rd probe (13) born spool is θ, 25 °≤θ≤35 ° wherein, the angle of the negative axle of projection and the X-axis of outgoing center line on the XY plane of second probe (12) and the 3rd probe (13) is respectively 60 ° and 120 °, and second probe (12) and the 3rd outgoing center line of (a 13) projection and the angle born spool of X-axis on the XZ plane of popping one's head in is respectively 30 ° and 150 °.
9, a kind of invasion body detection alarm method is characterized in that, this invasion body detection alarm method comprises:
The transponder pulse signal also receives echo;
Convert the echo that receives to digital signal with as current echo data;
Described current echo data and default environment echo data are compared to determine whether invasion body exists; And
When defining invasion body and exist, generate alerting signal.
10, invasion body detection alarm method according to claim 9, wherein, the current echo data that is obtained when beginning to enable described invasion body detection alarm method is stored as default environment echo data.
11, invasion body detection alarm method according to claim 10, wherein, described default environmental data is by periodically automatic or manual triggering renewal.
12, invasion body detection alarm method according to claim 9 wherein, compares described current echo data and default environment echo data to determine that the step whether invasion body exists comprises:
From current echo data, determine current echo quantity;
From default environment echo data, determine default environment echo quantity;
Current echo quantity and default environment echo quantity are compared; And
Increase than default environment echo quantity in current echo quantity and to reach default increment, and continue to increase when reaching the Preset Time value, determine that invasion body exists; Wherein, described default increment and described Preset Time value are provided with by automatic or manual.
13, invasion body detection alarm method according to claim 9, wherein, described alerting signal is the multistage alerting signal of the degree of closeness of representative invasion body, and described invasion body detection alarm method comprises that also one in this multistage alerting signal of basis triggers at least one in warning lamp, alarm bell and the alarm host machine.
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| CN86105300A (en) * | 1986-08-06 | 1988-02-17 | 黄伟顺 | Ultrasonic alarm |
| CN2153098Y (en) * | 1993-05-04 | 1994-01-12 | 张家平 | Ultrasonic burglar alarm |
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