CN101632105A - Warning system, wireless alarm devices and article protection method - Google Patents
Warning system, wireless alarm devices and article protection method Download PDFInfo
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Abstract
Warning system, wireless alarm devices and article protection method have been described in some aspect according to the present invention.In one aspect; warning system comprises base communication device, be configured to the telecommunication equipment of communicating by letter with base communication device; wherein telecommunication equipment is suitable for being associated with the article that will protect; and wherein telecommunication equipment comprises warning circuit; and wherein telecommunication equipment is configured to produce the corresponding a plurality of reference signal of discerning component of communicating by letter that comprises with between base communication device and telecommunication equipment, and the control warning circuit is discerned the existence of component and produced human appreciable warning in response to detecting a plurality of in reference signal.
Description
Priority request
The application requires the U.S. Provisional Patent Application No.60/795 of " the Alarm Systems; Wireless Alarm Devices; And Article Security Methods " by name of submission on April 28th, 2006,851 right of priority, and the instruction of described application is included in this for your guidance.
Technical field
The present invention relates to warning system, wireless alarm devices and article protection method.
Background technology
Theft detected electrons system be used in for example comprise client's retail application etc. widely apply in to stop theft.Some theft detected electrons system may be operated in the frequency band of the electromagnetic interference (EMI) sensitivity that the source beyond the system element is launched.Interference can make the work variation of theft detected electrons system, causes insecure operation, comprises sending the false alarm signal.Electromagnetic interference (EMI) can cause that described possible source comprises for example honeycomb or wireless phone or pager by different possible sources.Because popularizing day by day and use of these equipment---comprise that the individual uses in protected zone, the influence of these interference sources may be significant.
The disclosure has been provided by improved communicating devices and the method for providing.
Description of drawings
Embodiments of the invention are described with reference to the accompanying drawings.
Fig. 1 is schematically showing according to the warning system of an embodiment.
Fig. 2 is the functional structure chart according to the telecommunication equipment of an embodiment.
Fig. 3 is the functional structure chart according to the modulate circuit of the telecommunication equipment of an embodiment (conditioningcircuitry).
Fig. 4 is the schematic diagram according to the modulate circuit of the telecommunication equipment of an embodiment.
Fig. 5 illustrates the figure how Fig. 5 a and Fig. 5 b make up.After Fig. 5 a and Fig. 5 b are combined is by the process flow diagram according to the performed method of the telecommunication equipment of an embodiment.
Fig. 6 is the schematic diagram according to the supervisory circuit of the telecommunication equipment of an embodiment (monitoringcircuitry).
Fig. 7 is the schematic diagram according to the modulate circuit of the telecommunication equipment of an embodiment.
Embodiment
At first point to following other U.S. Patent application: by name " the Alarm Systems; Wireless Alarm Devices; And Article SecurityMethods " that submits on the same day with the application, the invention people is Ian R.Scott, Brian J.Green and Dennis D.Belden, Jr., attorney docket is the U.S. Patent application of 1796154US2AP, with by name " the Alarm Systems; Wireless Alarm Devices; And ArticleSecurity Methods " that submit on the same day with the present invention, the invention people is Ian R.Scott, Brian J.Green and Dennis D.Belden, Jr., attorney docket is the U.S. Patent application of 1796157US2AP, and the instruction of above-mentioned two applications is included in this for your guidance.
With reference to figure 1, represent the exemplary configuration of the warning system of an illustrative examples with label 10 according to the present invention.Warning system 10 comprises base communication device 12 and the one or more telecommunication equipments 14 (equipment 14 only is shown among Fig. 1) that are provided with away from base communication device 12.Telecommunication equipment 14 can be portable in one embodiment and move with respect to base communication device 12, and can be called as radio alarming unit or equipment in some configuration.In described embodiment, base communication device 12 and telecommunication equipment 14 are configured in the radio communication that realizes comprising radio communication each other.
In an illustrative embodiments, warning system 10 can be used to protect a plurality of article (not shown).In a more specific example, warning system 10 can implement to comprise with protection a plurality of article of the consumer lines that is used to sell in client's retail application.In some applications, a plurality of telecommunication equipments 14 can be used for protecting a plurality of article respectively.Telecommunication equipment 14 can be associated with article respectively, for example in one embodiment, carries out association by telecommunication equipment 14 is attached on the article that will protect.
In one embodiment, warning system 10 can be implemented as the article that protection will be retained in given position, up to mandate is removed these article from this position till.For example, warning system 10 can be associated with the room such as retail shop, and, can expect article are retained in localized area (for example, in this inside, shop), just produce warning if detect the undelegated attempt that will remove article from this localized area.A kind of exemplary configuration that is used in the warning system 10 in the retail item monitoring realization is eas (EAS).Warning system 10 can realize dissimilar EAS monitoring in different embodiment.The example of the difference configuration of EAS comprises AM (sound magnetic), EM (electromagnetism) and RF (radio frequency).
Therefore, in one embodiment, base communication device 12 can be positioned near the discrepancy stomion 16 in room.In this exemplary embodiment that describes, base communication device 12 comprises near a plurality of doors 18 (for example, door 18 can be positioned at the relative both sides on retail shop doorway) that are positioned at the stomion 16 of coming in and going out.In described implementation; door 18 can be launched wireless signal; it is limited to the protection zone at stomion 16 places of coming in and going out; if make telecommunication equipment 14 be brought into or shift out and inner corresponding localized area, shop; will be (for example through this protection zone; in Fig. 1, the localized area that comprises item to be protected can be on the right of door 18, and the left side of door can be not protected).In one embodiment, if there are a plurality of inlet/outlet points in single room or zone, can use a plurality of base communication device 12 to protect this room or zone.
With reference to figure 2, show exemplary configuration according to the telecommunication equipment 14 of an embodiment.In the configuration that illustrates, telecommunication equipment 14 comprises the label 20 that couples with panalarm 22.Shell such as plastic containers (for example in one embodiment; corresponding to the box that as label among Fig. 2 is 14) can be made into to be used for to hold and protect one or two of label 20 and panalarm 22, and shell can be used for telecommunication equipment 14 is coupled, adheres to or otherwise be associated with the article that will protect.In the exemplary embodiment, shell can encase some or all element of (encase) equipment 14, and in other embodiments, shell can be used to support (support) rather than encase described element.Can use any suitable shell that is used for the element of fastening 14.In this exemplary embodiment that describes, panalarm 22 comprises modulate circuit 30, treatment circuit 32, memory circuit 34, warning circuit 36 and power supply 38.In the exemplary embodiment, power supply 38 can battery forms provides and is coupled so that one or more in modulate circuit 30, treatment circuit 32, memory circuit 34 and/or the warning circuit 36 of available electric energy to be provided.In other embodiments, other replaceable configuration of telecommunication equipment 14 and panalarm 22 may comprise more, still less and/or interchangeable element.
In described embodiment, label 20 is configured to realize the radio communication with base communication device 12.In a kind of structure, label 20 comprises the antenna circuit of LC resonant circuit forms in parallel, this parallel connection LC resonant circuit is configured in response to the resonance (for example in one embodiment, inductance and electric capacity can be connected in parallel between the node R 1 and ground connection among Fig. 4) by base communication device 12 electromagnetic energy emitted.In a kind of configuration, the inductance of antenna circuit is solenoid coil (the solenoid wire wound) inductance that is configured to the communication frequency resonance of base communication device 12.In one embodiment, can comprise can be from commercial eas (EAS) equipment that obtains of a large amount of suppliers for example tag 20.As discussed below, telecommunication equipment 14 can produce human appreciable alerting signal in response to the resonance of antenna circuit.Alerting signal can indicate this telecommunication equipment 14 (and the article that are associated---be in the protection zone if any), such as doorway at retail shop.
In one embodiment, the resonance of label 20 causes the generation of reference signal, and this reference signal is sent to the panalarm 22 that is positioned at telecommunication equipment 14.Reference signal can comprise that the carrier frequency that sends with base communication device 12 is corresponding, equal the signature (signature) (for example, pulse string mode (pattern)) of alternating current energy in the moment of the resonance frequency of label 20 in carrier frequency.Reference signal can be sent to modulate circuit 30, and it can produce respectively and the corresponding a plurality of patterns of discerning component (for example pulse) of one of AC energy pulses string.Pulse is received by treatment circuit 32, and this treatment circuit 32 can be analyzed pulse to attempt to distinguish with the corresponding pulse of base communication device 12 electromagnetic energy emitted with by electromagnetism---for example corresponding to noise or interference---pulse of generation in other source.Detect equipment 14 and received after the electromagnetic energy from base communication device 12, treatment circuit 32 may command warning circuits 36 are to launch human appreciable warning.
In one embodiment, treatment circuit 32 is configured to other desired operation of deal with data, control data visit and storage, issue an order and control telecommunication equipment 14.Treatment circuit 32 can be monitored and the corresponding signal of communicating by letter of base communication device 12.As following further discussion, according to an exemplary embodiment, treatment circuit 32 can be analyzed the pulse length and the dutycycle of the stream of pulses that modulate circuit 30 produced.Treatment circuit 32 can use distinguishes windowhood method (discriminating window method), and its regulation will be described regularly the minimum pulse quantity in the sequence of detecting in the parameter of (on and off timing) of pulse switch at one group.Describe the other details of an exemplary analysis below in detail.As following further discussion, if satisfy predefined parameter, treatment circuit 32 may command telecommunication equipments 14 emission alerting signals.
In at least one embodiment, treatment circuit 32 can comprise the circuit that is arranged to the desired programming (programming) that realization provides by suitable medium.For example, treatment circuit 32 can be implemented as processor and/or be configured to carry out one or more and/or hardware circuit in other structure of executable instruction, and described other structure comprises for example software and/or firmware instructions.The exemplary embodiment of treatment circuit 32 comprises hardware logic, PGA, FPGA, ASIC, state machine and/or other structure independent or that combine with processor.These examples of treatment circuit 32 are used to illustrate that other configuration also is possible.
At least some embodiment described herein or aspect can utilize the programming that is stored in the above-mentioned suitable memory circuit 34 or transmits via network or other transmission medium, is configured to control suitable treatment circuit to realize.For example, can provide programming by suitable medium, described medium comprises for example being included in to be made in the article, (for example is included in the data-signal that transmits via suitable transmission medium, modulated carrier, packet, numeral etc.) in, wherein said suitable transmission medium such as communication network (for example the Internet and/or dedicated network), wired electrical connection, light connect and/or for example via communication interface or the electromagnetic energy of utilizing other suitable communication structure or media to provide.In an example, comprise processor can with the exemplary programming of code can be used as and be included in the data-signal in the carrier wave and be transmitted.
As mentioned above, warning circuit 36 can be configured to launch human appreciable alerting signal (for example, to notify article to move into the fact of protection zone to the interested party).For example, warning circuit 36 can comprise audible alarm and/or the visual alarm that is configured to launch human appreciable alerting signal respectively.
With reference to figure 3, the exemplary elements of an embodiment of the modulate circuit 30 between label 20 and the treatment circuit 32 is shown.Shown modulate circuit 30 comprises detecting device 40, amplifier 42 and pulse shaper 44.Detecting device 40 is configured to detect the existence of the radio communication that base communication device 12 produces.In one embodiment, detecting device 40 is the RF detecting devices that are configured to detect relative low-power signal (millivolt rank).Corresponding second electric signal of first electric signal that detecting device 40 is configured to export and receive.As described below, detecting device 40 can comprise nonlinear detector, and second electric signal can have nonlinear relationship with first electric signal.
In the embodiment shown, amplifier 42 is configured to based on the AC train of impulses that is provided by label 20 and utilizes second electric signal of detecting device 40 output and produce digital signal.Pulse shaper 44 is configured to the discerned component (for example pulse) of output to help treatment circuit 32 to detect in the reference signal of second electrical signal form of process amplifier 42.The other details of the element of Fig. 3 will be discussed in next embodiment.
With reference to figure 4, the exemplary configuration of modulate circuit 30 is shown.In the embodiment shown in fig. 4, show the illustrative embodiments of detecting device 40, amplifier 42 and pulse shaper 44.In the configuration of being described, detecting device 40 comprises D1, L1, C4, and amplifier 42 comprises comparer U1, and pulse shaper comprises D2.Shown in circuit provide the sensitivity in the millivolt scope from the signal of base communication device 12, provide passive simultaneously and do not consume detecting device 40 substantially from the power of power supply 38.That other circuit may comprise is more, still less and/or interchangeable element.
In the embodiment that is described, during operation, owing to the output of the label 20 that causes with electromagnetic energy resonance is detected by the non-linear equipment that comprises diode D1.More particularly, coupling capacitance C2 is connected to detecting device 40 with the signal that label 20 produces, and allows the DC skew (DC shift) that becomes output signal simultaneously.The RF signal that receives when label 20 is when negative, diode D1 forward conduction, thereby the waveform clamper is arrived ground, and when the RF signal is not conducting of timing, thereby generate the corresponding positive signal of instantaneous peak value of the RF waveform (for example 8.2MHz) that (develop) produced with base communication device 12 in half period of wave, thereby the DC that is proportional to the RF signal amplitude that label 20 receives is provided or becomes the AC waveform slowly.In detecting device 40, comprise nonlinear element D1, improved the sensitivity of the panalarm 22 of telecommunication equipment 14.In one embodiment, described diode D1 provides nonlinear relationship, wherein the electric current by diode D1 with the negative half-cycle of the corresponding reception voltage of the input signal that receives from label 20 in be clamped to ground, and in positive half period, be allowed to the amplitude of oscillation for just, and provide to output signal to C4, so this output signal is proportional to the positive peak of received signal.Detected DC component signal is coupled to C4 by DC, and is blocked by inductance AC.C4 keeps detected magnitude of voltage.Therefore, in one embodiment, the C4 of detecting device 40 is configured to produce the envelope of signal, and it is similar to the consistent square wave of approximate trend with the RF envelope of the signal that receives from base communication device 12 usually.
In described embodiment, C3 is coupled by inductance L 1, and selected so that the parallel resonance of elements combination at the frequency band place that base communication device 12 is sent to be provided, thereby increases the AC impedance of the circuit that is connected to label 20.The impedance that is increased has reduced the load of label 20, thereby the voltage on it is higher, thereby improves sensitivity and provide the reflection of increase to base communication device 12 by the antenna circuit of the label 20 of signal.In one embodiment, the detecting device that comprises nonlinear detector 40 that is provided produces the pulse that the signal that receives with antenna circuit has the absolute value relation by using diode D1, and described pulse application is arrived comparer U1.In described embodiment, detecting device 40 has nonlinear transmission characteristic, and wherein in one embodiment, by using diode D1, the input and output of detecting device 40 have absolute value or logarithmic relationship.
The detecting device of describing according to embodiment 40 has increased the sensitivity to the radio communication of base communication device 12, and not have to use the amplifier of working under the RF frequency, otherwise, but the electric current of amplifier consumes considerable and remarkable reduction battery life.
Related elements R3, R4 and R5 that the reference signal of detecting device 40 outputs is compared device U1 and amplifier 42 convert logic level to.Logic level reference signal is provided for pulse shaper 44.The D2 of pulse shaper 44 eliminates the noise from comparer output, and provides the pulse of relative clean to analyze for treatment circuit 32.D2 allows the quick fall time of detected RF signal and the slow rise time of the assigned rate that set by R6 and C5, and wherein R6 and C5 also are used to provide noise to a certain degree to reduce.
Table A provides the table of value of the exemplary configuration of modulate circuit 30, and wherein modulate circuit 30 is configured to use with label 20, and wherein label 20 comprises the LC resonant circuit in parallel of the electric capacity of solenoid coil inductor with 9.7uH and 39pF.Other element can be used in other configuration and/or with other configuration of label 20 and uses.
| Element | Component names/value |
| ?R1 | ?3K |
| ?R2 | ?150 |
| ?R3 | ?2.4K |
| ?R4 | ?5.6M |
| ?R5 | ?10M |
| ?R6 | ?470K |
| ?C2 | ?1pF |
| ?C3 | ?2pF |
| ?C4 | ?1pF |
| ?C5 | ?1000pF |
| ?C6 | ?0.5pF |
| ?L1 | ?100uH |
| ?D1 | ?SMS7621 |
| ?D2 | ?BAS70 |
| ?U1 | ?LPV7215 |
Table A
More particularly, in a kind of configuration, the value of the addressable corresponding a plurality of parameters of given configuration with warning system 10 (RF for example discussed above, AM, EM) of treatment circuit 32.Treatment circuit 32 can utilize described parameter value in monitoring during modulate circuit 30 receives reference signal, wherein said parameter value has stipulated that the time-amplitude criterion is to distinguish communication and the interference from base communication device 12.The feature of the component discerned (for example pulse) that will discern in the described parameter value definable signal.In a specific examples, described parameter is the pattern of the component discerned that will discern of definable also, with indication communication whether from base communication device 12.In one embodiment, but predefine at the parameter value of dissimilar systems (for example, before producing reference signal to be processed, defining).For example, can use equipment will to be pre-programmed in the telecommunication equipment 14 at the value of difference configuration before at the scene, and can select a suitable class value corresponding to the type of the warning system 10 that will use.
The exemplary parameter that is used for the pattern that can discern component and/or can discern component can comprise minimum and maximum pulse parameter, minimum and maximum pulse gap parameters, maximum effective impulse gap, number of pulses and successful number.Pulse width parameter is used to define the pulse width that will monitor.Minimum between the pulse gap parameters definition adjacent pulse and maximum time length, maximum effective impulse gap is corresponding to such time span, if do not receive other pulse in this time span after last pulse then take place overtime.In one embodiment, treatment circuit 32 can be carried out the moving window analysis, wherein attempts the correct pulse of giving determined number that the location is defined by successful number of parameters in by the moving window of the defined pulse of number of pulses parameter.With the more details of describing according to Fig. 5 about the component discerned of the monitoring impulse form relevant with the predefined pattern of pulse.
With reference to figure 5, the exemplary process method of reference signal is shown according to an embodiment.Can attempt to carry out this method to distinguish the electromagnetic energy that produces and receive by telecommunication equipment 14 by base communication device 12 and the electromagnetic energy that produces and receive by telecommunication equipment 14 by other source.In an example, treatment circuit 32 is configured to for example carry out this method by the execution sequence instruction.Comprise more, still less or other method of replaceable step also be possible.
At step S10, all counters are reset.Exemplary counters comprise with the corresponding pulse_cnt counter of number of pulses that is counted and with the corresponding success_cnt counter of the number of pulses that satisfies the relevant parameter value that is counted.
At step S12, detect and measure width from first pulse of pulse shaper circuit.
At step S14, measure inter-train pause in the first pulse back.
At step S16, determine whether gap measured in step S14 has surpassed the max_valid_gap parameter.This parameter can be corresponding to overtime.If condition is sure, then process is returned step S10, and wherein counter is reset.If condition is for what negate, then process is proceeded step S18.
At step S18, can carry out from the pulse timing of a plurality of pulses of pulse shaper circuit output.Determined pulse timing can be used to select organize one group that will monitor in the parameter values more.For example, but predefine not on the same group value and use it for the difference configuration of warning system 10.In one embodiment, in case pulse timing is determined, then this pulse timing can be used to select a corresponding suitable class value.And, at step S18, can be corresponding to increasing progressively the pulse_cnt counter in the detected pulse of step S12.
At step S20, calculate in the width of the detected pulse of step S12 and gap thereafter, and compare with one group of corresponding pulse width and gap parameter value.If for what negate, then process is proceeded step S24 according to this weighing result of parameter value.If according to this weighing result of parameter value is sure (that is, coupling), then process is proceeded step S22.
At step S22, increase progressively the success_cnt counter, show the pulse that detects in range of parameter values.
At step S24, measure subsequently pulse width and gap, and increase progressively the pulse_cnt counter.
At step S26, once more inter-train pause and max_valid_gap parameter are compared.If the condition of step S26 is sure, then process is returned step S10, shows overtime.If the condition of step S26 is for what negate, process is proceeded step S28.
At step S28, compared with selected parameter value in the pulse width and the gap that record.If for what negate, then process is proceeded step S32 according to this weighing result of parameter value.If according to this weighing result of parameter value is sure, then process is proceeded step S30.
At step S30, increase progressively the success_cnt counter, show the pulse that detects in range of parameter values.
At step S32, determine whether to detect the pulse of desired quantity.In an example, process is waited for, till detecting ten pulses.If the condition of step S32 is for what negate, then process is returned step S24.If the condition of step S32 is sure, then process is proceeded step S34.
At step S34, determine whether to detect the successful pulse of desired quantity.In the example of ten pulses of above-mentioned monitoring, at step S34, process can be monitored and exist at least five pulses to satisfy this condition of criterion of being stipulated by selected value in ten pulses.Can be step S32 and S34 in other embodiments and use other criterion.If the condition of step S34 is for what negate, process is returned step S10, and telecommunication equipment 14 does not produce warning.If the condition of step S34 is sure, then process is proceeded step S36.
At step S36, it is 12 electromagnetic energy emitted of base communication device that process has picked out the electromagnetic energy that receives by telecommunication equipment 14, rather than from electromagnetic energy that other source produced.This distinguishes that there is telecommunication equipment 14 in indication in the protection zone, and the emission of treatment circuit 32 may command alerting signals.
Some embodiment at least in the above-mentioned exemplary embodiment provides communication that utilizes telecommunication equipment 14 to distinguish base communication device 12 and other the pseudo-electromagnetic energy that may launch's from other source advantage.And at least one embodiment of telecommunication equipment 14 provides very low signal strength signal detection relatively, to the ignored influence of label 20 with the performance of communicating by letter of base communication device 12, and low relatively power consumption.
And warning system 10 can have improved resolving ability when having cell phone and wireless phone and other interference source, and above-mentioned interference source can hinder in electronic article monitoring system for example the reliable detection from the signal of base communication device 12.Therefore, reduced to disturb the neurological susceptibility of the false alarm that causes according to the warning system 10 of an embodiment.
With reference to figure 6, a possible embodiment of the supervisory circuit 50 that can be included in the telecommunication equipment 14 is shown.In one embodiment, supervisory circuit 50 can couple with treatment circuit 32.In some configuration, supervisory circuit 50 is configured to reduce the false alarm owing to existing pseudo-electromagnetic energy (for example not being by 10 electromagnetic energy emitted of system) to cause in the environment of implementation system 10.In a kind of configuration that is described below, supervisory circuit 50 is configured to monitor the existence of pseudo-electromagnetic energy and the output that generation can be used for reducing the generation false alarm.
In one embodiment, supervisory circuit 50 reduces the false alarm that can exist with the pseudo-electromagnetic interference (EMI) of particular types.The configuration of illustrated supervisory circuit 50 is configured to monitor and may has the radio communication that is produced with base communication device 12 and have similar characteristics (for example time signature) (signature of communicating by letter that for example is used for identification equipment 12) and can cause telecommunication equipment 14 that the interference of false alarms takes place.For example, the transmission frequency of GSM phone is roughly 850-1900MHz, and this compares with transmission frequency 8.2MHz among the embodiment of the radio communication of system 10 is different substantially.But the signal that the GSM phone is sent may be enough to cause electric current by the radiation of an embodiment who triggers telecommunication equipment 14.Described triggering may be owing to may sign similar cause of GSM interference with the radio communication of base communication device 12.
In the exemplary embodiment, supervisory circuit 50 is tuned to the frequency of pseudo-electromagnetic energy (for example GSM disturbs), and is not tuned to the frequency range of the radio communication of base communication device 12.For example, in the embodiment that is described, supervisory circuit 50 by tuning to receive and the pseudo-electromagnetic energy (for example, GSM phone transmission or for example other high-frequency interferencing signal) of demodulation outside the communication band of base communication device 12.In one embodiment, in the configuration of the warning system 10 of using big communication in the 8.2MHz frequency band, the antenna 52 of supervisory circuit 50 can be tuned to the frequency band such as 100MHz-5GHz.
The output node 54 of supervisory circuit 50 can couple with treatment circuit 32.Treatment circuit 32 can be handled and the corresponding signal that receives from output node 54 of the signal that receives from modulate circuit 30.Treatment circuit 32 can be analyzed the corresponding signal that corresponds to each other on time from circuit 30,50, and the communication that is in response to base communication device 12 with the output of the modulate circuit 30 of determining to have suitable signature also is in response to pseudo-electromagnetic energy.In described configuration, the caused electric signal of the communication by base communication device 12 that the output of supervisory circuit 50 allows treatment circuit 32 to distinguish to receive from modulate circuit 30 and by the caused electric signal of pseudo-electromagnetic energy.As what describe below, treatment circuit 32 can be based on the output of supervisory circuit 50 and is carried out discrimination analysis.
The foregoing description is configured to make supervisory circuit 50 to detect the possible source of the pseudo-electromagnetic energy of the work that can influence warning system 10, and abandons the proper communication of base communication device 12.In the illustrative embodiments of warning system 10, when having the pseudo-electromagnetic energy of the operate as normal that can influence warning system 10, the receiver of modulate circuit 32 and supervisory circuit 50 all can be indicated and is similar to communicating by letter (for example, having and the corresponding signature of communicating by letter of base communication device 12) but the existence of the signal that caused by pseudo-electromagnetic energy of base communication device 12.But, base communication device 12 normal band (for example, 8.2MHz) Nei communication period, only modulate circuit 30 produces the electric signal that there is the communication of base communication device 12 in indication, supervisory circuit 50 does not then have.
If the output electric signal of the receiver of modulate circuit 30 and supervisory circuit 50 is at the corresponding moment all effectively (active), and all has corresponding time signature of the communication of base communication device of being similar to 12, then show to have pseudo-electromagnetic energy, and treatment circuit 32 is ignored possible false alarm condition and is not controlled warning circuit 36 generation alerting signals.But, if output electric signal invalid (inactive) from supervisory circuit 50, and from the output electric signal of modulate circuit 30 the corresponding moment effectively and have effective signature, then possible alert if is by caused from the legitimate correspondence of base communication device 12, and treatment circuit 32 may command warning circuits 36 emission alerting signals.And in described embodiment, if the output electric signal of supervisory circuit 50 is effective, and the corresponding output electric signal of modulate circuit 30 is invalid, and then treatment circuit 32 is not controlled the emission alerting signal.
In a kind of configuration, antenna 52 can be implemented as independent industrial siding (wire), and it is as the unipole antenna that is tuned to the pseudo-electromagnetic energy frequency range that will monitor.Equally, in the described embodiment of Fig. 6, the operation class of supervisory circuit 50 is similar to modulate circuit 30, wherein coupling capacitance C1 is coupled to nonlinear detector diode D1 with the RF energy, allow the DC skew simultaneously, make the signal (for example signal that produces from the unintentional interference source of GSM cell phone and other) that becomes relatively slowly can pass through diode D1.Non-linear element diode D1 generates the electric signal that is proportional to pseudo-electromagnetic energy envelope.Electric signal is coupled to by inductance L 1 and keeps capacitor C 2, and described inductance L 1 is an electrical short at low frequency, is open circuit at high frequency, with the load of minimize antenna signal.The value of C2 can be at the timing sequence (if known or measurable) of desired pseudo-electromagnetic energy and is optimised.In one embodiment, can select the value of C1, C2 and L1 so that communicating by letter of base communication device 12, and the high relatively frequency of pseudo-electromagnetic energy is optimised and detected by big high attenuation.In described embodiment, supervisory circuit 50 becomes in response to pseudo-electromagnetic energy effectively, and is invalid or it is abandoned for the communication of base communication device 12.Therefore, the output electric signal of supervisory circuit 50 is only represented pseudo-electromagnetic energy.The operation class of all the other elements of supervisory circuit 50 is similar to each respective element of the modulate circuit 30 in the exemplary embodiment of being described.
In some embodiments, because relatively very high frequency (character of involuntary adding for example＞100MHz), exploitation receive very high frequency relatively and refuse the supervisory circuit 50 of the flat relative low frequency 8.2MHz signal of relative forceful electric power may be more simple.In certain embodiments, design receives relative low frequency 8.2MHz and may be more difficult for the receiver of the insusceptible modulate circuit 30 of pseudo-electromagnetic energy (for example radio-frequency (RF) energy of GSM phone) of the relative high level that may exist.
With reference to figure 7, the another kind of possible configuration of modulate circuit 30 is shown, comprise the detector circuit of replacement, its frequency selectivity when being connected to label antenna lower (comparing) with the embodiment of Fig. 4, thereby more responsive a little to low level signal.
In configuration shown in Figure 7, detecting device 40 comprises D1, R2, C4, and amplifier 42 comprises comparer U1, and pulse shaper comprises D2.Shown in circuit provide sensitivity from the signal of base communication device 12 in the millivolt scope, provide passive simultaneously and do not consume detecting device 40 substantially from the power of power supply 38.That other circuit may comprise is more, still less and/or interchangeable element.
In the embodiment that is described, during operation, owing to the output of the label 20 that causes with electromagnetic energy resonance is detected by the non-linear equipment that comprises diode D1.More particularly, coupling capacitance C2 is connected to detecting device 40 with the signal that label 20 produces, and allows the DC skew (DC shift) that becomes output signal simultaneously.The RF signal that receives when label 20 is when negative, diode D1 forward conduction, thereby the waveform clamper is arrived ground, and when the RF signal is not conducting of timing, thereby be created on the corresponding positive signal of instantaneous peak value of the RF waveform (for example 8.2MHz) that is produced with base communication device 12 in half period of wave, thereby the DC that is proportional to the RF signal amplitude that label 20 receives be provided or become the AC waveform slowly.In detecting device 40, comprise nonlinear element D1, improved the sensitivity of the panalarm 22 of telecommunication equipment 14.In one embodiment, described diode D1 provides nonlinear relationship, wherein the electric current by diode D1 with the negative half-cycle of the corresponding reception voltage of the input signal that receives from label 20 in be clamped to ground, and in positive half period, be allowed to the amplitude of oscillation for just, and provide to output signal to C4, so this output signal is proportional to the positive peak of received signal.Detected DC component signal is coupled by R2, and is carried out AC filtering by R2 and C4.C4 keeps detected magnitude of voltage.Therefore, in one embodiment, the C4 of detecting device 40 is configured to produce the envelope of signal, and it is similar to the consistent square wave of approximate trend with the RF envelope of the signal that receives from base communication device 12 usually.
In one embodiment, the detecting device that comprises nonlinear detector 40 that is provided produces the pulse that the signal that receives with antenna circuit has the absolute value relation by using diode D1, and described pulse application is arrived comparer U1.In described embodiment, detecting device 40 has nonlinear transmission characteristic, and wherein in one embodiment, by using diode D1, the input and output of detecting device 40 have absolute value or logarithmic relationship.
The detecting device of describing according to embodiment 40 has increased the sensitivity to the radio communication of base communication device 12, and not have to use the amplifier in the work of RF frequency place, otherwise, electric current that amplifier can consumes considerable and remarkable reduction battery life.
Related elements R3, R4 and R5 that the reference signal of detecting device 40 outputs is compared device U1 and amplifier 42 convert logic level to.Logic level reference signal is provided for pulse shaper 44.The D2 of pulse shaper 44 eliminates the noise from comparer output, and provides the pulse of relative clean to analyze for treatment circuit 32.D2 allows the quick fall time of detected RF signal and the slow rise time of the assigned rate that set by R6 and C5, and wherein R6 and C5 also are used to provide noise to a certain degree to reduce.
Table B provides the table of value of the exemplary configuration of modulate circuit 30, and wherein modulate circuit 30 is configured to use with label 20, and wherein label 20 comprises the LC resonant circuit in parallel of the electric capacity of solenoid coil inductor with 9.7uH and 39pF.Other element can be used in other configuration and/or with other configuration of label 20 and uses.
| Element | Component names/value |
| ?R1 | ?3K |
| ?R2 | ?100K |
| ?R3 | ?2.4K |
| ?R4 | ?5.6M |
| ?R5 | ?10M |
| ?R6 | ?470K |
| ?C2 | ?1pF |
| ?C4 | ?1pF |
| ?C5 | ?1000pF |
| ?C6 | ?0.5pF |
| ?D1 | ?SMS7621 |
| ?D2 | ?BAS70 |
| ?U1 | ?LPV7215 |
Table B
Consistent with rule, usefulness more or less specific to the language description of structure and method feature the disclosure.But, should be appreciated that the disclosure is not limited to these special characteristics shown and that describe, realizes preferred form of the present invention because means disclosed herein comprise.Therefore, require according to of the present invention any form or modification in the normal range of the claims of doctrine of equivalents proper interpretation.
And the each side that this paper is provided is for structure that instructs illustrative examples of the present disclosure and/or operation.Applicant of the present invention think these described illustrative examples also comprise, open and described other inventive aspect except clear and definite disclosed aspect here.For example, other inventive aspect can comprise than still less, more manying and/or interchangeable feature described in the illustrative examples.In more specific example, the applicant think the disclosure to comprise, open and describe and comprise than clear and definite disclosed method here having still less, more many and/or the method for interchangeable step, and comprise than clear and definite disclosed device here having still less, more many and/or the device of interchangeable structure.
Claims (38)
1. warning system comprises:
Base communication device;
Be configured to the telecommunication equipment of communicating by letter with described base communication device, wherein said telecommunication equipment is suitable for being associated with the article that will protect, and wherein said telecommunication equipment comprises warning circuit; And
Wherein said telecommunication equipment is configured to produce the corresponding a plurality of reference signal of discerning component of communicating by letter that comprises with between described base communication device and described telecommunication equipment, and controls described warning circuit and discern the existence of component and produce human appreciable warning in response to detecting described a plurality of in described reference signal.
2. the system as claimed in claim 1; wherein said base communication device is configured to produce wireless signal in the protection zone; and described telecommunication equipment is configured to comprise the described described reference signal of discerning component in response to having described telecommunication equipment and receive described wireless signal by described telecommunication equipment in described protection zone and produce.
3. system as claimed in claim 2 wherein places described base communication device and is used for limiting near the discrepancy stomion of the protected localized area of described therein article the described wireless signal of described protection zone with emission.
4. the system as claimed in claim 1, wherein said telecommunication equipment is configured to visit and discerns the corresponding predefined parameter value of each component in the component with described, wherein said predefine value was defined before producing described reference signal, and wherein said telecommunication equipment is configured to utilize described predefine value to monitor described reference signal, to detect the described component of discerning.
5. the system as claimed in claim 1, wherein said telecommunication equipment is configured to visit the described predefined pattern of discerning component, and wherein said telecommunication equipment be configured in response to detect described reference signal with described pattern form described discern component and control described warning circuit produce the appreciable warning of the described mankind.
6. system as claimed in claim 5, the wherein said component of discerning comprises pulse, described predefined pattern comprises the pattern of described pulse, and wherein said telecommunication equipment is configured to be complementary and produce the appreciable warning of the described mankind in response to detecting described pulse and described predefined pattern.
7. the system as claimed in claim 1, the wherein said component of discerning comprises pulse, and wherein said telecommunication equipment be configured in response to the gap between the adjacent pulse in the width of described pulse and the described pulse be complementary and produce the appreciable warning of the described mankind producing the criterion that defines before the described reference signal.
8. the system as claimed in claim 1, wherein said telecommunication equipment comprise the antenna of mainly being made up of LC resonant circuit in parallel, described LC resonant circuit in parallel be configured to described base communication device electromagnetic energy emitted resonance to produce described reference signal.
9. system as claimed in claim 8, wherein said base communication device are configured to detect the described resonance of described telecommunication equipment, and produce human appreciable warning in response to described detection.
10. the system as claimed in claim 1, wherein said telecommunication equipment is configured to the resonance at first frequency scope place, wherein said base communication device is configured to be sent in that a plurality of moment have a plurality of different frequencies and at the wireless signal that comprises within the second frequency scope of described first scope, and wherein said telecommunication equipment is configured to produce and the described component of discerning that is received the corresponding described reference signal of part that has the frequency within described first frequency scope in the described wireless signal by described telecommunication equipment.
11. the system as claimed in claim 1, wherein said base communication device is configured to realize comprising that emission has the communication of the wireless signal of the frequency that is lower than 55MHz, and described telecommunication equipment is configured to produce described reference signal in response to receiving described wireless signal.
12. a wireless alarm devices comprises:
The shell that the article that are configured to and will protect couple;
With the antenna circuit that described shell couples, described antenna circuit is configured to produce and the corresponding reference signal of radio communication of carrying out with the base communication device of warning system;
Couple and be configured to produce the warning circuit of human appreciable warning with described shell; And
The treatment circuit that couples with described antenna circuit and described warning circuit, described treatment circuit is configured to distinguish other signals that the electromagnetism the subject of knowledge and the object of knowledge outside the described radio communication of the reference signal that radio communication produced of described base communication device and described base communication device produces, and wherein said treatment circuit is configured to control described warning circuit and produces the appreciable warning of the described mankind in response to described reference signal that the described radio communication that identifies described base communication device produced.
13. equipment as claimed in claim 12, wherein said treatment circuit are configured to detect not existing of pseudo-electromagnetic energy, and control described warning circuit and produce the appreciable warning of the described mankind in response to detecting described the existence.
14. equipment as claimed in claim 12, wherein said telecommunication equipment are configured to distinguish the described radio communication of the described base communication device that comprises the wireless signal that is received by described telecommunication equipment in the protection zone.
15. equipment as claimed in claim 13, also comprise modulate circuit, described modulate circuit is configured to produce in response to receiving described wireless signal and comprises a plurality of described reference signals of discerning component respectively, and described treatment circuit is configured to utilize the described component of discerning to carry out described distinguishing.
16. equipment as claimed in claim 15, wherein said modulate circuit comprises nonlinear detector, and described nonlinear detector is configured to produce the described component of discerning that the described reference signal that is produced with described antenna circuit has logical relation.
17. equipment as claimed in claim 15, wherein said treatment circuit are configured to distinguish described reference signal in response to the described reference signal of the component discerned that comprises predefine quantity in the predefined time period respectively.
18. equipment as claimed in claim 15, wherein said treatment circuit is configured to visit and discerns the corresponding predefined parameter value of each component in the component with described, and wherein said treatment circuit is configured to utilize the described component of discerning of described predefine value identification to monitor described reference signal.
19. equipment as claimed in claim 15, wherein said telecommunication equipment is configured to visit the described predefined pattern of discerning component, and wherein said treatment circuit is configured to compare with described predefined pattern and carry out described discriminating by described reference signal described being discerned component.
20. equipment as claimed in claim 19, the wherein said component of discerning comprises pulse, and described predefined pattern is stipulated the parameter of described pulse, the parameter in the gap between the described pulse and the number of pulses that will detect.
21. equipment as claimed in claim 12, wherein said antenna circuit mainly is made up of LC resonant circuit in parallel, and described LC resonant circuit in parallel is configured to produce with the described radio communication resonance of described base communication device and during described resonance described reference signal.
22. equipment as claimed in claim 21, wherein said antenna circuit is configured to the resonance at first frequency scope place, wherein said base communication device is configured to comprise the described radio communication of a plurality of wireless signals, described a plurality of wireless signal has a plurality of different frequencies and is comprising within the second frequency scope of described first scope in a plurality of moment respectively, and wherein said telecommunication equipment is configured to produce and a plurality of components of discerning that received the corresponding described reference signal of part that has the frequency within described first frequency scope in the described wireless signal by described antenna circuit.
23. an article protection method comprises:
Telecommunication equipment is associated with the article that will protect;
Utilize the base communication device of warning system in the protection zone, to launch wireless signal;
Described telecommunication equipment and the article that are associated are moved in the described protection zone;
Utilize described telecommunication equipment, will compare with predefined pattern with the corresponding reference signal of the electromagnetic energy that described telecommunication equipment receives when being positioned at described protection zone;
Utilize described telecommunication equipment, in response to described comparison, the described electromagnetic energy that described telecommunication equipment is received when being positioned at described protection zone is identified as corresponding with the described wireless signal that utilizes described base communication device emission; And
Utilize described telecommunication equipment, produce human appreciable warning in response to described identification.
24. method as claimed in claim 23, also comprise and utilize described telecommunication equipment, the electromagnetic energy that generation and described telecommunication equipment receive is corresponding to comprise a plurality of described reference signals of discerning component, and wherein said comparison step comprises more described component and the described predefined pattern discerned.
25. method as claimed in claim 24 is wherein placed described base communication device and is used for limiting near the discrepancy stomion of the protected localized area of described therein article the described wireless signal of described protection zone with emission.
26. method as claimed in claim 24, also comprise visit and comprise the described a plurality of predefined parameter value of discerning the corresponding described predefined pattern of component in the gap between pulse and the described pulse, and wherein saidly relatively comprise more described component and the described predefined value discerned.
Describedly discern a plurality of pulsion phases couplings of component and described predefined pattern and produce the appreciable warning of the described mankind 27. method as claimed in claim 24, wherein said generation comprise in response to what comprise pulse.
28. method as claimed in claim 27, wherein said generation comprise in response to the gap between the adjacent pulse in the width of described pulse and the described pulse be complementary and produce the appreciable warning of the described mankind producing the criterion that defines before the described reference signal.
29. method as claimed in claim 23, wherein said telecommunication equipment is configured to the resonance at first frequency scope place, wherein said base communication device is configured to be sent in that a plurality of moment have a plurality of different frequencies and at the wireless signal that comprises within the second frequency scope of described first scope, and wherein said telecommunication equipment is configured to produce and is received by described telecommunication equipment that the part that has the frequency within described first frequency scope in the described wireless signal is corresponding to comprise the described described reference signal of discerning component.
30. method as claimed in claim 23, wherein said telecommunication equipment comprises the antenna of mainly being made up of LC resonant circuit in parallel, and described LC resonant circuit in parallel is configured to described wireless signal resonance and produces described reference signal during being included in described LC resonance in parallel.
31. an article protection method comprises:
Utilize telecommunication equipment to receive electromagnetic energy;
Utilize described telecommunication equipment, produce the reference signal that comprises a plurality of pulses in response to receiving described electromagnetic energy;
Monitor the existence of the pulse of the some that has the parameter that before described reception, defines in the described reference signal;
Detection has the existence of pulse of the described quantity of described parameter in described reference signal; And
Produce human appreciable warning in response to described detection, to indicate the article that in the protection zone, have described telecommunication equipment and be associated with described telecommunication equipment.
32. method as claimed in claim 31 also is included in emission wireless signal in the described protection zone, described wireless signal is configured to cause the generation of the described reference signal that comprises described pulse.
33. method as claimed in claim 31, also being included as described parameter provides a plurality of different values and selects in the described value one, and wherein said monitoring comprises and utilizes in the described value a selected value to monitor.
34. comprising in response to the existence of the pulse that detects described quantity in the predefined time period, method as claimed in claim 31, wherein said generation produce.
35. comprising in response to the existence of the pulse that detects the described quantity that forms predefined pattern, method as claimed in claim 31, wherein said generation produce.
36. method as claimed in claim 35, wherein said generation comprises in response to the existence that detects the pulse that forms predefined pattern and producing that wherein said predefined pattern comprises the predefine pulse of predefine quantity and a plurality of predefines gap between described pulse.
37. method as claimed in claim 31, wherein said reception comprises that the antenna circuit that utilizes described telecommunication equipment receives described electromagnetic energy, wherein said antenna circuit is mainly formed with the LC resonant circuit in parallel of the radio communication resonance of base communication device by being configured to, and wherein said generation is included in the described pulse that produces described reference signal during the described resonance.
38. method as claimed in claim 37, wherein said telecommunication equipment is configured to the resonance at first frequency scope place, wherein said base communication device is configured to be sent in that a plurality of moment have a plurality of different frequencies and at the described wireless signal that comprises within the second frequency scope of described first scope, and wherein said telecommunication equipment is configured to produce and the described pulse that is received the corresponding described reference signal of part that has the frequency within described first frequency scope in the described radio communication by described telecommunication equipment.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79585106P | 2006-04-28 | 2006-04-28 | |
| US60/795,851 | 2006-04-28 | ||
| US11/788,235 | 2007-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101632105A true CN101632105A (en) | 2010-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780022329A Pending CN101632105A (en) | 2006-04-28 | 2007-04-27 | Warning system, wireless alarm devices and article protection method |
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| CN (1) | CN101632105A (en) |
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2007
- 2007-04-27 CN CN200780022329A patent/CN101632105A/en active Pending
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