CN101558433A - Methods and apparatus for security device portal sensing - Google Patents
Methods and apparatus for security device portal sensing Download PDFInfo
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- CN101558433A CN101558433A CNA2007800465469A CN200780046546A CN101558433A CN 101558433 A CN101558433 A CN 101558433A CN A2007800465469 A CNA2007800465469 A CN A2007800465469A CN 200780046546 A CN200780046546 A CN 200780046546A CN 101558433 A CN101558433 A CN 101558433A
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Abstract
A security device, according to various aspects of the present invention, detects movement of a provided portal cover. The security device includes a sensor, a bias magnet, and a processor. The sensor provides indicia of a magnitude of a magnetic flux through the sensor. The bias magnet provides the magnetic flux through the sensor. The processor detects a change in the magnitude of the magnetic flux outside an upper boundary and a lower boundary of a first threshold and a second threshold respectively. The sensor does not move with respect to the magnet. Movement between the sensor and the portal cover changes the magnitude of the magnetic flux through the sensor. The processor determines an average value of a series of values of the indicia of the magnitude of the magnetic flux that fall within the upper boundary and the lower boundary of the first threshold.; The upper boundary and the lower boundary of the first threshold and the second threshold respectively are set in accordance with the average value.
Description
The cross reference of related application
The application requires in the U.S. Provisional Application 60/874 of submission on Dec 16th, 2006 according to 35U.S.C § 119 (e), 996 and the U.S. Provisional Application 60/897 submitted on January 26th, 2007,785 right of priority, wherein above-mentioned application here is incorporated herein by reference.
Technical field
Embodiments of the invention relate to and are used to monitor by the equipment of inlet to the visit of protected field.
Background technology
Traditional safety feature had been used to control the visit to the protected field already.Access control comprises detection unwarranted entering (ingress) and/or leaves (egress); Authorized user is verified, the report about entering and/or leaving is provided; And the notice that unauthorized access in time is provided.Control can be disposed from zone fast and effectively and be benefited to the distorting of safety feature from detecting unauthorized persons to the safety feature of the visit in zone.
Summary of the invention
According to various aspects of the present invention, a kind of safety feature is to mobile detection of the inlet cover (portal cover) that provided.Described safety feature comprises: sensor, lift magnet and processor.Described sensor provides the amplitude indication (indicia) by the magnetic flux of described sensor.Described lift magnet provides the magnetic flux by described sensor.Described processor to be in the first threshold and second threshold value separately the coboundary and the changes in amplitude of the magnetic flux outside the lower boundary detect.Described sensor does not move with respect to magnet.Mobile change between sensor and the inlet cover is by the amplitude of the magnetic flux of sensor.Processor determines to drop on the mean value of the amplitude indicated value of the coboundary of first threshold and a series of magnetic flux within the lower boundary.According to mean value first threshold and second threshold value coboundary and lower boundary separately are set.
According to various aspects of the present invention, a kind of method detects the mobile of inlet cover.Described method is carried out by safety feature.Described method comprises: according to any PS, (1) is asked for by sensor and is dropped on the coboundary of first threshold and the amplitude indicated value of a series of magnetic flux within the lower boundary average, so that mean value is provided; (2) detection drops on the coboundary of second threshold value and the amplitude indication of the magnetic flux outside the lower boundary; (3) adjust first threshold and second threshold value coboundary and lower boundary separately according to mean value; And (4) provide a signal according to described detection.The main body of magnet and safety feature is coupled, so that the magnetic flux by sensor is provided.Described sensor and main body are coupled.Sensor does not move with respect to magnet.Sensor passes through the amplitude of the magnetic flux of sensor with respect to the mobile change of inlet cover.
Description of drawings
Referring now to accompanying drawing embodiments of the invention are described further, mark identical in each accompanying drawing refers to components identical, wherein:
Fig. 1 is the functional block diagram of the safety feature of various aspects according to the present invention;
Fig. 2 is the functional block diagram that removes detecting device of the various aspects according to the present invention;
Fig. 3 is the planimetric map at Fig. 1 safety feature that removes detecting device that removes position enforcement Fig. 2;
Fig. 4 is a planimetric map of implementing Fig. 1 safety feature that removes detecting device of Fig. 2 at coupling position;
Fig. 5 is in the Fig. 2 that removes the position to remove the bias unit in the detecting device and the planimetric map of sensor;
Fig. 6 is that Fig. 2 of being in coupling position removes the bias unit in the detecting device and the planimetric map of sensor;
Fig. 7 is in the Fig. 2 that removes the position to remove the bias unit in the detecting device and the planimetric map of sensor;
Fig. 8 is a planimetric map of implementing Fig. 1 safety feature that removes detecting device of Fig. 2;
Fig. 9 is the planimetric map of sensitive axis of the sensor that removes detecting device of Fig. 2;
Figure 10 is the planimetric map at Fig. 1 safety feature that removes detecting device that removes position enforcement Fig. 2;
Figure 11 is a planimetric map of implementing Fig. 1 safety feature that removes detecting device of Fig. 2 at coupling position;
Figure 12 is the functional block diagram of the inlet sensor of the various aspects according to the present invention;
Figure 13 is the planimetric map at Fig. 1 safety feature of the inlet sensor of implementing Figure 12 away from the position of inlet cover (portal cover);
Figure 14 is the planimetric map at Fig. 1 safety feature of the inlet sensor of the position of neighboring entry lid enforcement Figure 12;
Figure 15 is the data flowchart of the method carried out by Fig. 1,8 and 12 safety feature;
Figure 16 is the synoptic diagram of indication of magnetic flux, drift threshold and alert threshold of the inlet sensor of Figure 12 of changing in time;
Figure 17 is the synoptic diagram about the mean value of the magnetic flux indication of Figure 16;
Figure 18 is the planimetric map that is positioned in Fig. 1 safety feature on the inlet cover with right entry lid and left entry lid;
Figure 19 is the planimetric map of the embodiment of Fig. 1 safety feature of locating as shown in Figure 8;
Figure 20 is the planimetric map of the embodiment of Fig. 1 safety feature;
Figure 21 is the planimetric map with embodiment of Fig. 1 safety feature that allows the track that sensor moves;
Figure 22 is the planimetric map of embodiment that Fig. 1 safety feature of signal is provided by inlet cover;
Figure 23 is various aspects and implement the perspective view of Fig. 1 safety feature of Coupling device according to the present invention;
Figure 24 is the skeleton view of the Coupling device of Figure 23;
Figure 25 is the skeleton view with Figure 23 safety feature of Coupling device;
Figure 26 is the planimetric map that various aspects are implemented Fig. 1 safety feature of Coupling device according to the present invention.
Embodiment
The protection of the safety feature of various aspects can be avoided without the infringement of reporting that enters and/or leave (for example, visit) by the zone of inlet (portal) (for example doorway, window, hatch, ventilating opening) visit according to the present invention.Safety feature provides report to entering and leaving by surveillance portal; The warning of unauthorized access; The checking of authorized user; And the state of safety feature.
Safety feature detect physical stimulation (for example electricity, magnetic, pressure, move, temperature, light, electromagnetic radiation), the variation of physical quantity, physical characteristics and/or physical quantity or physical characteristics so that detect by entering the mouth to the visit of protected field.For example, safety feature can detected temperatures, magnetic flux, move, be applied to the variation of the pressure on the object; And the variation of light (for example intensity, wavelength) and radiofrequency signal.Safety feature can detect physical stimulation variation (for example increase, reduce, mean value, rate of change, with the deviation (departure) of quiescent value), with this as indication (indicia) to the visit of protected field.Safety feature can also detect these physical quantitys of heat, light, vibration and magnetic flux.
Safety feature can provide the warning to unauthorized access, this comprising loud noise (for example steam whistle, alarm, the tinkle of bells, operator's voice), send signal, received signal, transmission message, receive message and set up and communicate by letter with authorized user (for example monitor service).Safety feature can be judged the type of alerts action according to the decision that strategy or operator make.Can detect according to following situation and lack authorize: user-specific information (for example pin, access code, employee id number), access time (for example beyond normal working hours), access location (for example visit seldom or from uncommitted locality) can't be provided; Response time (for example the user responds slowly, response before requiring) and respond style (for example the user imports emergency sign indicating number in danger (distress code)).
Safety feature can be verified the user.The information that checking can provide the user is compared with information or operator's knowledge (knowledge) that safety feature keeps.User profile can comprise pin, biometric information (for example voice, iris, fingerprint, speech pattern, face recognition), password (for example singly touching equipment (one-touch device), customer-furnished password, Dallas/Maxium " one-touch "), telephone number, employee's number, bar code and RFID transmission.User profile both can also can be sent to remote location and verify at local verification.
The state of safety feature can comprise battery electric quantity, removes incident, assembly health degree, detected physical stimulation, the amount of detected physical stimulation and the variation of physical stimulation.The incident of removing can be included under the situation that does not have to authorize and move, shakes or crash safety.Safety feature can provide the notice of relevant this safety feature state.Notice can comprise transmission signal (for example wireless radio transmission, LED flicker), sends message (for example telephone message, Email, text message), and produces noise (for example steam whistle, alarm, the tinkle of bells, buzzer).Notice can comprise status information (for example event type takes place, removes for battery electric quantity, received signal intensity, strength of transmitted signals, the incident that removes).
Safety feature can provide and the information relevant to the visit of protected field (for example report, summary, statistical value).Access time, visit date, user profile, safety feature status information, detected physical stimulation, the notice that is provided, the alarm that is provided, the strategy of enforcement and the action that the operator takes can be provided in report.Safety feature can provide report (for example by week, monthly provide, providing simultaneously with the notice of unauthorized access) according to strategy, and report perhaps is provided when being requested.
For example, according to various aspects of the invention, the safety feature 100 of Fig. 1～26 is by surveillance portal lid and detect removing of safety feature and monitor can be via the visit of the protected field of inlet visit.Safety feature 100 can comprise one or more inlet sensors 102, one or more detecting device 104, zero or a plurality of motion sensor, access control apparatus 110 and zero or a plurality of communication module 112 of removing.
The inlet sensor detects enter or leave the protected field by inlet.The inlet sensor detects the variation of physical stimulation, physical quantity, physical characteristics and/or physical quantity or physical characteristics.The inlet sensor can also detect moving of inlet cover (for example door, window), thus as the indication that conducts interviews by inlet.The inlet sensor can reporting event.Incident can comprise: move threshold quantity greater than inlet cover and (for example open, close), greater than inlet cover in the duration of ad-hoc location threshold value (for example open and close, half-open), the threshold velocity and/or the acceleration that move greater than inlet, and greater than the threshold quantity (for example attack, destroy) of the power that puts on inlet and/or inlet cover.
Removing detecting device detects removing safety feature from a certain position.Position (location) comprises the location (position) of safety feature and/or towards (orientation).Removing detecting device detects the variation of physical stimulation, physical quantity, physical characteristics and/or physical quantity or physical characteristics.Be used to detect the physical stimulation that removes can comprise safety feature moving on direction, vibration, external force (physical force) changes and towards and acceleration change.Remove detecting device and can detect incident (for example remove, replace).Removing detecting device can reporting event.
Remove detecting device and safety feature can be coupled to a certain surface.Coupling comprises uses physical stimulation will remove that detecting device is coupled to a certain surface so that detect and remove, and to remove the physical stimulation that detecting device monitors identical with this for wherein above-mentioned physical stimulation.The surface includes flap, inlet framework, near the surface of inlet and near the surface of inlet cover.
Moving of motion sensor senses safety feature.This motion sensor detects the variation of physical stimulation, physical quantity, physical characteristics and/or physical quantity or physical characteristics.The physical stimulation that motion sensor can detect can be with to remove the physical stimulation that detecting device detects different.Motion sensor can detect incident.Motion sensor can also reporting event.Incident can comprise greater than the motion of certain threshold value and a certain frequency range with interior vibration.Motion sensor comprises any conventional motion and/or vibration transducer.The embodiment of safety feature 100 comprises the motion sensor that contains piezoelectric membrane band (piezo film strip).
Access control apparatus can receive event notice, uses the strategy of relevant alerts action, uses relevantly to through authorizing and/or unauthorized access is made the strategy of response, and can participate in event detection.Event notice can report to access control apparatus by any sensor, detecting device, user's (for example, using emergency button) or Systems Operator's (for example, by system testing).Access control apparatus can comprise any routine data treatment facility, communication facilities, sensor device and software.Participate in event detection can comprise reception from physical stimulation, physical quantity and/or the physical characteristics of sensor and/or detecting device with change detected.Application strategy can comprise reception user profile, send user profile to the center, receive stored user information, send stored user information, user profile is compared the response that report proofing state (for example failure, success) and determining is made unwarranted visit with canned data.
Other unit of communication module and security system communicate.Each unit of security system can be included in safety feature described herein, assemble the polymerizer (aggregator) of information from a plurality of safety features, and center (for example have people, unmanned).Communication module uses any conventional hardware (for example wired, wireless) and any conventional agreement (for example TCP/IP, 802.11, Zigbee, cell phone) to communicate.Communication module receives and/or transmission information.Action, user profile, the variation of canned data, detected physical stimulation, detected physical quantity, detected physical characteristics and/or detected physical quantity or physical characteristics that information can comprise report, event notice, strategy, make according to strategy.
Access control apparatus can use the information that is received by communication module.Access control apparatus can use communication module to come to send information to another unit.
An embodiment of safety feature 100 can include oral instructions sensor 102, removes detecting device 104, motion sensor 106, access control apparatus 110 and communication module 112.
Remove detecting device 104 and can comprise biasing (bias) device 206, sensor 202 and comparer 204.
Sensor detects the variation of physical stimulation, physical quantity, physical characteristics and/or physical quantity or physical characteristics.Sensor can detect the indication to removing.Sensor can comprise the sensor device and the software of any routine.For example, sensor 202 can comprise magnetic flux transducer (for example hall effect sensor, magnetometer, gaussmeter), vibration transducer, current sensor, voltage sensor, optical sensor, position transducer (for example GPS) and motion sensor (for example visual field difference detector, illumination change detecting device, reflectance varies detecting device).
Bias unit provides the physical stimulation that is detected the physical stimulation type by sensor.Bias unit provides the fundamental quantity (for example amplitude) of a certain physical stimulation.At least a portion of this fundamental quantity of sensor.Environmental factor (for example with the adjacency of physical object, mankind's activity, move) then may influence the basic stimulus amount that sensor arrives.Environmental factor can increase or reduce the physical stimulation amount that sensor arrives.
Comparer receive relevant by sensor to the information of physical stimulation amount.Comparer can the detected physical stimulation amount of detecting sensor changes of threshold.Comparer can be used a sluggishness (hysteresis) to the information that receives from sensor, and reducing noise thus may be to the influence by the physical stimulation amount of sensor report.Comparer can according to by sensor to the detection carried out of the changes of threshold of physical stimulation amount notice is provided.Notice can comprise the packet of voltage, electric current and communication protocol.Threshold value is adjustable.Adjustment comprises increase, reduces and keeps the numerical value of threshold value.Adjustment can also be carried out according to temperature, life-span, work period (duty cycle) and environmental baseline.
In one embodiment, bias unit 206 comprises magnet 310 and 312.Sensor 202 comprises Hall switch (hall switch) 314.Hall switch 314 comprises the comparer with threshold value.Hall switch 314 provides electric signal according to the changes in amplitude by its detected magnetic flux greater than threshold value.Hall switch 314 is positioned in such a way, i.e. at least a portion of magnetic flux 308 between the opposite polarity magnetic pole of the magnetic pole of magnet 310 and magnet 312 conduction is by Hall switch 314.Magnetic flux 306 between the opposite polarity magnetic pole of the magnetic pole of magnet 310 and magnet 312 then leaves Hall switch 314 and conducts by metal 304.
Remove detecting device 104 and move, then can make magnetic flux 404 (for example at least a portion of magnetic flux 308) leave Hall switch 314 conduction towards the position on adjacent metal surface 402.Variation between the magnetic flux 308 of Hall switch 314 detection conduction passing through Hall switch 314 and 404 the amplitude.Hall switch 314 provides signal according to the detection for described variation.Hall switch 314 can offer this signal access control apparatus 110.This signal provides from the metal surface 402 to remove the indication that this removes sensor 104.
Remove detecting device 104 and can adopt a kind of like this mode to be coupled to safety feature 100, i.e. the mobile meeting of safety feature 100 causes removing detectable moving in the detecting device 104.The above-mentioned embodiment that removes detecting device 104 can detect the equipment of removing 104 and therefore be safety feature 100 removing from surface 402.Can comprise that with removing the processing that detecting device 104 is coupled to safety feature 100 and/or metal surface 402 glue is bonding, fastener (fastener) is fixing, and the magnetic force coupling.
In one embodiment, safety feature 100 comprises the metal 304 that is in the main body 302. Magnet 310 and 312 and metal 304 magnetic couplings.By using the structure relevant with main body 302 or sheet metal 304, can be with magnet 310 and 312 further fixing in position.Structure can comprise wall, bearing and groove.
The physical stimulation that is provided by bias unit 206 can further provide bonding force.This bonding force can be coupled on safety feature 110 and/or a certain object removing detecting device 104.As mentioned above, in one embodiment, remove the magnet 310 of detecting device 104 and 312 magnetic couplings to the metal 304 of safety feature 100.Magnet 310 and 312 can further arrive metal surface 402 with safety feature 100 magnetic couplings.Safety feature 100 is coupled to metal surface 402, makes magnetic flux 404 conduction leave Hall switch 314.402 remove safety feature 100 from the metal surface, then make at least a portion conduction of magnetic flux 308 pass through Hall switch 314.By detecting changes in amplitude, just can provide from the metal surface 402 to remove safety feature 100 or 402 indications of adhering to safety feature 100 in the metal surface by the magnetic flux of Hall switch 314.
Remove the Hall switch 506 that the embodiment of detecting device 104 comprises U-shaped magnet 502 and is positioned at U-shaped magnet 502 recesses (cavity).From at least a portion conduction of the magnetic flux 504 of magnet 502 north and south poles by Hall switch 506.To remove detecting device 104 and be placed near the metal surface 602, magnetic flux 604 (for example at least a portion of magnetic flux 504) can leave Hall switch 506 conduction.Variation between 506 pairs of magnetic flux 504 of Hall switch and 604 the amplitude detects.Hall switch 506 provides signal according to the detection for described variation.
Remove the Hall switch 706 that the embodiment of detecting device 104 comprises cylindrical magnet 702 and is positioned at magnet 702 recesses.From at least a portion conduction of the magnetic flux 704 of magnet 702 north and south poles by Hall switch 706.To remove detecting device 104 and be placed near the metal surface, then at least a portion of magnetic flux 704 can be left Hall switch 706 conduction.When removing detecting device 104 and be positioned near the metal surface, Hall switch 706 will detect the magnetic flux diversion (a conducting away) of leaving Hall switch 706.Hall switch 706 provides signal according to the detection for diversion.
The embodiment of safety feature 800 comprises at least one that removes in detecting device 830 and 840.Magnet 806～822 provides the magnetic flux of conduction by Hall switch 832 and 842. Magnet 810 and 820 can provide the main magnetic flux of conduction by Hall switch 842.Magnet 806,808,812,814,816 and 822 then can provide less important magnetic flux, and this less important magnetic flux can increase or reduce the amplitude of the magnetic flux that provided by magnet 810 and 820 and conduction by Hall switch 842.
The magnetic pole of magnet 806～822 can be aligned to the magnetic flux that increases or reduce to conduct by Hall switch 832 and/or 842.For example, magnet 806～812 can be positioned such that their arctic towards equidirectional, and the South Pole of magnet 814～822 is in opposite direction location.Not under the situation on adjacent metal surface, this arrangement can increase by Hall switch 832 and 842 detected magnetic flux at safety feature 800.Pole arrangement shown in Figure 8 then can not reduce amplitude by Hall switch 832 and 842 detected magnetic flux under the situation on adjacent metal surface at safety feature 800.
Sensor can have sensitive axis.Sensitive axis comprises an axle that passes sensor.If provide physical stimulation, then can allow sensor when detecting the amplitude of physical stimulation, to have higher sensitivity along sensitive axis.For example, sensor 902 is shown in x, y with respect to quadrature and the z axle.The sensitive axis of sensor 902 comprises the x axle.Therefore, the physical stimulation that provides along the x axle can be provided detecting device 902, and the physical stimulation of the same magnitude that provides along any other axis or direction can be provided on less degree simultaneously, perhaps detected at all less than.
Under the situation of magnetic sensor, by locating sensitive axis with respect to the magnetic flux that provides by lift magnet, can be so that magnetic sensor has bigger sensitivity when detecting the magnetic flux changes in amplitude.The sensitivity that increases can make sensor 202 detect the less variation of magnetic flux amplitude and/or affected by noise less.Magnetic flux comprises the magnetic stimulation stream between the magnetic pole of opposite polarity.For example, magnetic flux is in magnet 312 and 310; (vice versa) flowed between the north and south poles of magnet 502, magnet 702, magnet 810 and 820 (not shown) and magnet 1004.
Comprise in mode vertical with magnetic flux, parallel and at an angle with respect to the processing of magnetic flux location sensitive axis and to locate sensitive axis.In one embodiment, the sensitive axis of Hall switch 314 is perpendicular to magnetic flux 308 location.In another embodiment, Hall switch 1006 is perpendicular to magnetic flux 1008 location.The magnet 1004 that removes detecting device 104 is coupled to the main body 1002 of safety feature 100.When safety feature 100 left 1102 location, metal surface, at least a portion conduction of magnetic flux 1008 was by Hall switch 1006.And if with magnet 1004 with safety feature 100 magnetic couplings to the metal surface 1102, then can make magnetic flux 1104 (at least a portion of magnetic flux 1008) leave metal surface 1106 conduction.Hall switch 1006 detects the variation between the amplitude of magnetic flux 1008 and 1104.Hall switch 1006 provides signal according to the detection to described variation.
The embodiment of inlet sensor 102 comprises Hall element 1302 and magnet 1304.Magnet 1304 provides magnetic flux.From at least a portion conduction of the magnetic flux of magnet 1304 by Hall element 1302.Hall element 1304 provides the indication of conduction by the amplitude of the magnetic flux 1306 of this Hall element 1302.About the amplitude of magnetic flux indication comprise with the proportional voltage of magnetic flux and with the proportional electric current of magnetic flux.
The inlet sensor towards and/or metal part mobile that leave inlet can change the amplitude of the magnetic flux of conduction by Hall element 1302 (for example 1306,1402).The amplitude of the magnetic flux of conduction by Hall element 1302 and the main body 1308 and the distance between the inlet cover 1402 of safety feature 100 are proportional.The window that inlet cover comprises metallic door, has the door of metal part, has the door of metal surface and have the metal part.The amplitude that Hall element 1302 detects by the magnetic flux of Hall element 1302.Hall element 1302 will offer processor 1206 about the indication of magnetic flux amplitude, so that carry out following method.
The method of being carried out by safety feature 100 discussed here can be by the initialization of this safety feature applicable components, read, calculate, any combination of setting and detectability is carried out.Safety feature 100 can be stored, retrieves, changes, ask on average, sues for peace, compares, transmits and show in order to the data of carrying out each method.Safety feature 100 can be carried out certain function according to the result of manner of execution.For example, inlet sensor 102 can be carried out the method 1500 of Figure 15.Some method of 1500 can be distributed to other assemblies via communication module 112 communications.
The data stream diagram has been described and can have been cooperated by the process that any combination of serial and parallel processing is implemented.In parallel fully embodiment, the example of each necessary process all is instantiation when the new data that is used for this process or revised data can be used; Perhaps, the static set of example amounts to the resource of enjoying in single-threaded or the multi-thread environment, and wherein each process all is can work under the situation for this process use at new data or revised data.
Process 1500 can begin when safety feature 100 resets and/or switches on.Process 1500 can also begin according to the software command of processor 1206 execution or via the process that is used for abnormality processing.
Those are used for the data and the assembly of other processes of implementation 1500 initialization procedure 1502 preparations.The processing of preliminary date comprises is arranged to initial value with data.For example, element index (element index) is arranged for first element of the array of elements of a series of previous sensor valuess of storage (priorsensor value); Each element in this array of elements is arranged to initial value; And with and mean value be set to zero.The processing of preparation assembly comprises: the analog to digital converter 1208 that resets, timer 1210 is arranged to initial value, and for processor 1206 is set up interrupt interval, and set up interrupt vector for processor 1206.
Initialization procedure 1502 can also be set a magnetic flux amplitude of passing through sensor 1302 that is used to represent the inlet cover closed orientation.
The data that read sensor process 1504 receives from sensor 1202.Comprise indication from the data of sensor 1202 by the amplitude of sensor 1202 detected physical stimulations.For example, the data from sensor 1202 can comprise the amplitude indication of conduction by the magnetic flux of sensor 1302.Data from sensor 1202 can be stored in the data storage 1512.For example, the data that read from sensor 1202 can be stored as the data that are called as current sensor values (present sensor value).
Calculate averaging process 1506 and determine the data that receive from sensor 1202 mean value with respect to the past data that receives from sensor 1202.Previous sensor values can be stored with data structure (for example array, lists of links).This data structure can use element index to visit.Number of elements in this data structure can be used as the data that are called as number of elements and stores.Current sensor values can make up in such a way with previous sensor values, promptly produces all values sum that the number that reads from sensor 1202 reaches described number of elements.The mean value of previous sensor values can be by will be above-mentioned and produce divided by the effective value quantity that provides in the previous sensor values structure.
Data and intermediate value can be stored in the data storage 1512 and by processor 1206 and visit.Data storage 1512 can be arranged in storer 1212.
The processing of calculating mean value can compensate the inlet sensor 102 assembly operation in drift (drift).For example, by asking for the average of a series of values of receiving from sensor 1202, just can compensate the drift (for example sensor, bias unit is aging) that the value that receives from sensor 1202 takes place along with the variation of temperature and time.
Threshold process 1508 is set sets the threshold value of using for other processes.These threshold values can be used to determine whether to carry out a certain action.Action can comprise that use forms on average from the data that sensor 1202 receives, and abandons the data that receive from sensor 1202, and alarm state (for example activity, inertia, early warning) is set.Threshold value comprises by process 1500 in order to carry out any threshold value of safety feature 100 each process.For example, can comprise drift threshold and alert threshold by the threshold value that threshold process 1508 settings are set.Threshold value can comprise monodrome, a series of value and have the coboundary and the value of lower boundary.
An embodiment of process 1500 uses drift threshold and alert threshold, and these two threshold values all have separately coboundary and lower boundary respectively.The mean value of the data that receive from sensor 1202 can calculate according to drift threshold.For example, the data that receive from sensor 1202 then can be used for the calculating of sensing data mean value as mentioned above if its value falls within the drift threshold (for example more than or equal to lower boundary and be less than or equal to the coboundary).If its value of data that receives from sensor 1202 drops on (for example less than lower boundary or greater than the coboundary) outside the drift threshold, then be not used in calculating mean value.
Alarm state can be provided with according to alert threshold.For example, the data that receive from sensor 1202 then indicate inlet cover to move in a certain limit if its value falls within the alert threshold (for example more than or equal to lower boundary and be less than or equal to the coboundary), alarm state can be arranged to inertia thus.If its value of data that receives from sensor 1202 drops on (for example less than lower boundary or greater than the coboundary) outside the alert threshold, then indicate the mobile of this inlet cover to exceed a certain limit, so alarm state can be set to activity.If its value of data that receives from sensor 1202 drops on outside the alert threshold earlier, value subsequently drops within the alert threshold, perhaps these data its value in a period of time present drop within the alert threshold and outside pattern, then can allow alarm state is arranged to alert status.
The threshold value of the drift in the assembly operation that threshold process 1508 can be provided for compensating inlet sensor 102 is set.The embodiment of inlet sensor 102 is provided with threshold value according to the mean value of the data that receive from sensor 1202.
An embodiment setting of inlet sensor 102 be the drift threshold of attempting to solve noise (for example shake, thermonoise, electronic noise, the mechanical noise) problem that influence sensor 1202 detections.An embodiment of inlet sensor 102 border that drifts about is set to minimum six significance bit equivalences with analog to digital converter 1208.
An embodiment of inlet sensor 102 is provided with an alert threshold, so that the limit that inlet porting moves.This limit is according to being provided with by the range of movement that sensor 1202 detects.
Detecting gate state procedure 1510 detects the location of inlet cover.The location of detecting inlet cover comprises detects moving of inlet cover overrun.Detecting gate state procedure 1510 is provided with alarm state according to aforesaid detection.For example, as mentioned above, if receive a value that is in outside the alert threshold from sensor 1202, then indication can alarm state be set to activity.
Outside the computing technique of any routine all can be used for determining dropping within the threshold value still from the data value that sensor 1202 receives (for example with threshold, rate of change, from the variable quantity of preceding value).
Figure 16 represents an embodiment of process 1500, and has wherein comprised the data value that receives from sensor 1202 and be the value of drift and alert threshold setting.In Figure 16, a series of current sensor values that sinuate line (squiggly line) 1602 expressions receive from sensor 1202.Data from sensor 1202 are drifted about between coboundary 1604 and the drift lower boundary 1606 as if falling into, and just are used to calculate the mean value from the data of sensor 1202 receptions.If drop on outside the drift threshold, then be not used to calculating mean value from the data 1608 of sensor 1202.But these data 1608 drop within the alert threshold.When the data from sensor 1202 drop on outside the alert threshold, alarm state 1614 that then can the appearance activity.
Drop on the mean value of drift threshold in the sinuate line 1602 of line 1702 expressions among Figure 17 with each interior numerical value.As described in Figure 16, because during the alarm active state, all do not fall within the drift threshold from the data of sensor 1202, so mean value is constant.
Here can use and be easy to magnetic-coupled fastener and be prepared as magnetic coupling being not easy to magnetic-coupled inlet.For example, can be coupled to inlet cover with being easy to magnetic-coupled fastener.The processing that fastener is coupled to inlet cover comprises mechanical couplings and chemical coupling (for example gummed).Fastener can be arranged on the inlet cover and be corresponding with the position of the magnet that removes detecting device.The fastener 2214 that uses in one embodiment is coupled with right entry lid 2210, and is oriented to corresponding with the location of the magnet 2214 that removes detecting device 104.Fastener 2206 mechanical couplings are to right entry lid 2210, and magnet 2214 magnetic couplings are to fastener 2206, and the main body 2202 with safety feature 100 is coupled to right entry lid 2210 thus.Fastener 2206 is located in such a way, and promptly main body 2202 is able to inlet sensor 102 is placed on the position of contiguous left entry lid 2212 with the coupling of fastener 206.
Fastener can also be used as conductor.Conductor can carry current potential.Current potential can apply (for example providing) to fastener by first device, and is detected by second device, and/or is alternately provided by first and second equipment and detect.Current potential can carry information (for example signal).Fastener has the end that is exposed to the inlet cover both sides, just current potential can be carried to the opposite side of inlet thus from a side of inlet.Current potential comprises direct current (for example DC) electromotive force and exchanges electromotive force (for example changing in time).In one embodiment, fastener 2206 conducts current potential between access control apparatus 110 and the device in main body 2,204 2216.Main body 2204 is positioned at that different with main body 2202 on the inlet 2206 sides.Device 2216 can comprise a part, communication module and the concentrator (concentrator) of safety feature, safety feature.May need insulated with material with inlet cover as the fastener of conductor.For example, the metal fastener need insulate with metallic door, so that allow fastener to carry signal.In one embodiment, insulator 2208 insulation that fastener 2206 and right entry are covered 2210 materials.
The safety feature 100 of cooperating with fastener 2302 comprise hinge 2308 second portion 2306, cooperate with surface 2404 remove detecting device 104 and when the main body 2310 of safety feature 100 is positioned on the operable position, be positioned at left entry and cover near 2314 inlet sensor 102.Inlet sensor 102 can comprise additional magnet 2502, so that (nominally) sensor 102 that will enter the mouth is coupled to left entry and covers 2314 on paper.Magnet 2502 can increase, reduce the amplitude of the magnetic flux that detected by sensor 1202, perhaps the amplitude of the magnetic flux of this detection do not exerted an influence.Magnet 2502 can increase the amount of the needed power of mobile left entry lid overrun.
The shape of fastener can match with inlet, so that be attached to any part of inlet.For example, referring to Figure 26, fastener 2602 is coupled to right entry lid 2312 and is positioned on the handle 2316.The main body 2610 of safety feature 100 is coupled at hinge 2608 places and fastener 2602 in such a way, promptly make detecting device 102 (not shown) that remove of safety feature 100 be positioned near the surface 2606, sensor 102 (not shown) that enter the mouth simultaneously are positioned near the left entry lid 2314.Pedestal 2604 is coupled to right entry lid 2312.
More than describe the preferred embodiments of the present invention have been discussed, and these embodiment can change or revise and do not break away from the defined scope of the present invention of claim.Though description is clear has only described some specific embodiments of the present invention at this in order to make, scope of the present invention is intended to be defined by claims.
Claims (according to the modification of the 19th of treaty)
1. safety feature that moves that is used to detect the inlet cover that provided, described safety feature comprises:
Sensor provides the indication of the amplitude of the magnetic flux by described sensor;
Magnet provides the magnetic flux by described sensor; And
Processor receives the amplitude indication of magnetic flux and the coboundary that is in first threshold and the coboundary of the lower boundary and second threshold value and the changes in amplitude of the magnetic flux outside the lower boundary is detected; Wherein:
Sensor does not move with respect to magnet;
The mobile change of at least one with respect to inlet cover and in entering the mouth of sensor is by the amplitude of the magnetic flux of sensor;
Processor determines to drop on the mean value of the amplitude indicated value of the coboundary of first threshold and a series of magnetic flux within the lower boundary; And
According to mean value first threshold and second threshold value coboundary and lower boundary separately are set.
2. safety feature according to claim 1, wherein processor is according to dropping on the coboundary of second threshold value and the changes in amplitude of the magnetic flux outside the lower boundary provides notice.
3. according to the described described safety feature of claim 1, wherein:
Sensor comprises sensitive axis; And
Lift magnet provides the magnetic flux parallel with sensitive axis.
4. safety feature according to claim 1, wherein mean value includes only lower boundary and the indication of the amplitude between the coboundary that drops on first threshold.
5. safety feature according to claim 1, wherein said indication comprises voltage.
6. safety feature according to claim 1, wherein said indication comprises electric current.
7. safety feature according to claim 1, wherein the main body of sensor and safety feature is coupled and is positioned near the inlet cover.
8. safety feature according to claim 1, wherein magnet is coupled with main body away from the safety feature of inlet cover along the axle between sensor and the magnet.
9. safety feature according to claim 1, wherein first threshold is different with the absolute value of second threshold value coboundary separately and lower boundary.
10. safety feature according to claim 1, wherein the absolute value of the coboundary of first threshold and lower boundary is less than the coboundary of second threshold value and the absolute value of lower boundary.
11. safety feature according to claim 1, wherein said a series of values comprise at least one thousand values.
12. safety feature according to claim 1, wherein processor reception amplitude indication in per at least 0.5 second.
13. safety feature according to claim 1, wherein processor comprises the analog to digital converter of changing voltage.
14. a method that moves that is used to detect inlet cover of being carried out by safety feature, described method comprises:
Ask for by sensor and drop on the coboundary of first threshold and the amplitude indicated value of a series of magnetic flux within the lower boundary average, so that mean value is provided;
Detection drops on the coboundary of second threshold value and the amplitude indication of the magnetic flux outside the lower boundary; And
Adjust first threshold and second threshold value coboundary and lower boundary separately respectively according to mean value; Wherein
The main body of magnet and safety feature is coupled, so that the magnetic flux by described sensor is provided;
Sensor and main body are coupled;
Sensor does not move with respect to magnet;
The mobile change of at least one with respect to inlet cover and in entering the mouth of sensor is by the amplitude of the magnetic flux of sensor.
15. method according to claim 14 is wherein asked on average and comprised: the electric current that detects the amplitude of magnetic flux indicates whether less than the coboundary of first threshold and greater than lower boundary.
16. method according to claim 14 is wherein asked on average and is comprised: get rid of and drop on the coboundary of first threshold and each indication outside the lower boundary.
17. method according to claim 14 is wherein asked on average and is comprised: get rid of and drop on the coboundary of second threshold value and each indication outside the lower boundary.
18. method according to claim 14, wherein adjustment comprises: change the coboundary of first threshold and the value of lower boundary according to mean variation.
19. method according to claim 14, wherein adjustment comprises: the variation according to mean value changes the coboundary of second threshold value and the value of lower boundary.
20. method according to claim 14, wherein the absolute value of the coboundary of first threshold and lower boundary is less than the coboundary of second threshold value and the absolute value of lower boundary.
21. a safety feature that moves that is used to detect the inlet cover that is provided, described safety feature comprises:
Sensor provides the amplitude indication by the magnetic flux of described sensor;
Magnet provides the magnetic flux by described sensor; And
Processor receives the amplitude indication of magnetic flux and the coboundary that is in first threshold and the coboundary of the lower boundary and second threshold value and the changes in amplitude of the magnetic flux outside the lower boundary is detected; Wherein:
Sensor does not move with respect to magnet;
The mobile change of at least one with respect to inlet cover and in entering the mouth of sensor is by the amplitude of the magnetic flux of sensor.
Claims (20)
1. safety feature that moves that the inlet cover provided is provided, described safety feature comprises:
Sensor provides the indication of the amplitude of the magnetic flux by described sensor;
Lift magnet provides the magnetic flux by described sensor;
Processor, to be in the first threshold and second threshold value separately the coboundary and the changes in amplitude of the magnetic flux outside the lower boundary detect; Wherein:
Sensor does not move with respect to magnet;
Mobile change between sensor and the inlet cover is by the amplitude of the magnetic flux of sensor;
Processor determines to drop on the mean value of the amplitude indicated value of the coboundary of first threshold and a series of magnetic flux within the lower boundary;
According to mean value first threshold and second threshold value coboundary and lower boundary separately are set.
2. safety feature according to claim 1, wherein processor is according to dropping on the coboundary of second threshold value and the changes in amplitude of the magnetic flux outside the lower boundary provides notice.
3. safety feature according to claim 1, wherein:
Sensor comprises sensitive axis; And
Lift magnet provides the magnetic flux parallel with sensitive axis.
4. safety feature according to claim 1, wherein mean value includes only lower boundary and the indication of the amplitude between the coboundary that drops on first threshold.
5. safety feature according to claim 1, wherein said indication comprises voltage.
6. safety feature according to claim 1, wherein said indication comprises electric current.
7. safety feature according to claim 1, wherein sensor and safety feature be coupled and be positioned at inlet cover near.
8. safety feature according to claim 1, wherein magnet is coupled with safety feature away from inlet cover along the axle between sensor and the magnet.
9. safety feature according to claim 1, wherein first threshold is different with the absolute value of second threshold value coboundary separately and lower boundary.
10. safety feature according to claim 1, wherein the absolute value of the coboundary of first threshold and lower boundary is less than the coboundary of second threshold value and the absolute value of lower boundary.
11. safety feature according to claim 1, wherein said a series of values comprise at least one thousand values.
12. safety feature according to claim 1, wherein processor reception amplitude indication in per at least 0.5 second.
13. safety feature according to claim 1, wherein processor comprises the analog to digital converter of changing voltage.
14. a method that moves that is used to detect inlet cover of being carried out by safety feature, described method comprises:
Ask for by sensor and drop on the coboundary of first threshold and the amplitude indicated value of a series of magnetic flux within the lower boundary average, so that mean value is provided;
Detection drops on the coboundary of second threshold value and the amplitude indication of the magnetic flux outside the lower boundary;
Adjust first threshold and second threshold value coboundary and lower boundary separately according to mean value;
Provide a signal according to described detection, wherein:
The main body of magnet and safety feature is coupled, so that the magnetic flux by described sensor is provided;
Sensor and main body are coupled;
Sensor does not move with respect to magnet;
Sensor passes through the amplitude of the magnetic flux of sensor with respect to the mobile change of inlet cover.
15. method according to claim 14 is wherein asked on average and comprised: the electric current that detects the amplitude of magnetic flux indicates whether less than the coboundary of first threshold and greater than lower boundary.
16. method according to claim 14 is wherein asked on average and is comprised: get rid of and drop on the coboundary of first threshold and each indication outside the lower boundary.
17. method according to claim 14 is wherein asked on average and is comprised: get rid of and drop on the coboundary of second threshold value and each indication outside the lower boundary.
18. method according to claim 14, wherein adjustment comprises: change the coboundary of first threshold and the value of lower boundary according to mean variation.
19. method according to claim 14, wherein adjustment comprises: the variation according to mean value changes the coboundary of second threshold value and the value of lower boundary.
20. method according to claim 14, wherein the absolute value of the coboundary of first threshold and lower boundary is less than the coboundary of second threshold value and the absolute value of lower boundary.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US87499606P | 2006-12-16 | 2006-12-16 | |
| US60/874,996 | 2006-12-16 | ||
| US60/897,785 | 2007-01-26 |
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| Publication Number | Publication Date |
|---|---|
| CN101558433A true CN101558433A (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800465223A Pending CN101558387A (en) | 2006-12-16 | 2007-12-13 | Methods and apparatus for security device removal detection |
| CNA2007800465469A Pending CN101558433A (en) | 2006-12-16 | 2007-12-13 | Methods and apparatus for security device portal sensing |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800465223A Pending CN101558387A (en) | 2006-12-16 | 2007-12-13 | Methods and apparatus for security device removal detection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456115A (en) * | 2012-04-09 | 2013-12-18 | 霍尼韦尔国际公司 | Large gap door/window, high security, intrusion detectors using magnetometers |
| CN110545743A (en) * | 2017-04-12 | 2019-12-06 | 奥林巴斯株式会社 | Control device |
-
2007
- 2007-12-13 CN CNA2007800465223A patent/CN101558387A/en active Pending
- 2007-12-13 CN CNA2007800465469A patent/CN101558433A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456115A (en) * | 2012-04-09 | 2013-12-18 | 霍尼韦尔国际公司 | Large gap door/window, high security, intrusion detectors using magnetometers |
| EP2650848A3 (en) * | 2012-04-09 | 2018-03-07 | Honeywell International Inc. | Large gap door/window, high security, intrusion detectors using magnetometers |
| CN103456115B (en) * | 2012-04-09 | 2018-07-17 | 霍尼韦尔国际公司 | The high security intrusion detector using magnetometer of wide arc gap door/window |
| CN110545743A (en) * | 2017-04-12 | 2019-12-06 | 奥林巴斯株式会社 | Control device |
| CN110545743B (en) * | 2017-04-12 | 2022-10-14 | 奥林巴斯株式会社 | Control device |
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| Publication number | Publication date |
|---|---|
| CN101558387A (en) | 2009-10-14 |
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