EP3622492A1 - Device and method for detecting and signaling a state of a window or a door - Google Patents
Device and method for detecting and signaling a state of a window or a doorInfo
- Publication number
- EP3622492A1 EP3622492A1 EP18723824.1A EP18723824A EP3622492A1 EP 3622492 A1 EP3622492 A1 EP 3622492A1 EP 18723824 A EP18723824 A EP 18723824A EP 3622492 A1 EP3622492 A1 EP 3622492A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- unit
- window
- door
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000011664 signaling Effects 0.000 title claims abstract description 13
- 230000010355 oscillation Effects 0.000 claims abstract description 3
- 238000011156 evaluation Methods 0.000 claims description 40
- 230000009471 action Effects 0.000 claims description 11
- 230000006978 adaptation Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 description 11
- 238000001514 detection method Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
- G08B29/188—Data fusion; cooperative systems, e.g. voting among different detectors
Definitions
- the invention relates to an apparatus and a method for detecting and signaling a state of a window or a door.
- Such a device is commonly used e.g. used in or on windows or doors to determine whether the respective component is closed, opened or in an intermediate state, e.g. is tilted.
- the device is coupled to an alarm system or the like.
- the document EP 1 918 890 B1 indicates such a device.
- glass-breakage sensors which are glued to a pane of a window or a door and have a sensitive to structure-borne sound sensor. Glass breakage can be detected by characteristic glass breakage oscillations that are in the range of about 100 kHz (kilohertz). In this way, although an actual glass breakage is reliably detected, an (unsuccessful) break-in attempt goes unnoticed.
- the object of the present invention is therefore to provide an improved device for detecting and signaling a state of a window or a door. It is a further object to provide a method that allows reliable detection of intrusion-induced trauma to a window or door. The object is achieved by a device or a method having the features of the respective independent claim.
- the device is provided or connected to at least one second sensor unit for detecting a further state of the window or the door, this state having vibrations brought about by the action of force.
- a logic unit is provided to combine the further state before signaling with the open state.
- a basic idea of the invention thus consists in not evaluating vibrations or vibrations which point to the effects of violence on their own, but taking into account the opening state.
- the signals or information provided by the individual sensor units are thus correlated with one another in order to be able to make statements about a possible violence with a higher degree of certainty and less probability of false alarms.
- the device comprises at least the first sensor unit and possibly the second sensor unit, an assembly is provided directly on the window or the door.
- the device comprises the logic unit, thus the signals of the two sensor units are set in relation to each other in relation to each other and it is signaled directly by the device, the detected violence. In this way, the possibility of manipulating the signals of the sensor units compared to a remote correlation of the signals is reduced.
- a method comprises the following steps: An opening state of the window or door is detected by means of a first sensor unit, and a force action is detected on the basis of an evaluation of signals of a second sensor unit. The detected violence is then signaled depending on the detected opening condition of the window or door.
- the opening state at least the states “open” and “closed” occupy, with a detected violence impact is signaled only if the opening state of the window or door is not or only for a short time "closed.”
- the opening state in addition to the
- the predetermined period of time may be a few seconds.
- the triggering threshold can be reduced compared with, for example, a known glass-breakage sensor.
- Known sensors trigger only when an actual glass breakage, because any other threshold would too often lead to false alarms, for example, in a wind-induced slamming. Disadvantage is thereby burglary attempts, such. an unsuccessful impact on the disc, not recognized in devices and methods according to the prior art.
- burglary attempts can also be detected without the risk of false alarms increasing.
- the first sensor unit has an actuator for sensing the opening state and a potentiometer coupled thereto as the first sensor.
- This arrangement represents a reliable working and positioned in the rebate of the window and / or door sensor unit for detecting the opening state of the window or the door.
- a second sensor unit has at least one second sensor, which is a vibration sensor .Vibration sensors are available inexpensively in a large selection and high quality and require only a small installation space Sor is formed with at least one piezoceramic bimorph element.
- the at least one second sensor can also be designed as an acceleration sensor, in particular in MEMS (Micro Electro-Mechanical System) technology.
- the second sensor is arranged together with the first sensor in a housing of the device.
- This offers the advantage of a compact design with minimal cabling.
- the at least one second sensor has at least one preferred effective direction, it can be arranged correspondingly in the device, whereby the preferred direction of action provides the advantage that a signal amplitude of a signal detected in this direction of action is particularly high.
- an original mounting location of the device can still be used, wherein the sensor element must be aligned with its effective direction in the direction in which a probability of violence is greatest.
- Relevant empirical values can be used for this purpose.
- the device has a control device with an adaptation unit for the at least one second sensor unit, two evaluation units for a respective sensor unit and a transmission unit. This makes a compact design possible and the possibility of signal manipulation is further reduced.
- the matching unit has at least one filter circuit which is used for selective filtering of an output signal of the second sensor. This gives the advantage of a special signal selection to reduce false alarms.
- the evaluation unit for the second sensor unit can be designed at least for an evaluation of the time length and amplitude of the signals of the second sensor unit. This increases selectivity and precision. If, for example, a glass pane is destroyed with a hammer only at the second or third time, then the frequency of its occurrence can be detected by evaluating the signals generated thereby over a certain period of time and thus, for example, from other periodic noises or Signals are distinguished. This also applies to other tools with which frames or other components are to be broken.
- the evaluation unit for the second sensor unit can be designed to analyze signal characteristics of the signals of the second sensor unit, wherein a comparison with previously stored waveforms is performed. This makes a particularly advantageous evaluation with significant reduction of false alarms possible. An adaptation to different environmental and installation conditions can thus be easily realized.
- an additional evaluation unit may be provided, which is assigned to the first sensor unit and examines the Ausganssignale to vibrations. In this way, a plausibility of the detected signals can be made possible.
- the housing may e.g. be made of a weatherproof plastic, with a suitable protection against ingress of moisture and dust can be easily reduced to a minimum.
- Figure 1 is a schematic representation of a device according to the invention with a partially open housing
- Figure 2 is a schematic block diagram of an embodiment of the device according to the invention of Fig. 1;
- FIG. 3 shows a schematic block diagram of a variant of the exemplary embodiment according to FIG. 2.
- FIG. 1 shows a schematic representation of a device according to the invention with a partially opened housing.
- the device 1 for detecting a state of a window or a door has a first sensor unit 3 and a second sensor unit 7 in a common housing 2.
- the device 1 is intended for installation in a window or a door. Reference is made to document EP 1 918 890 B1.
- the housing 2 is made in this embodiment of a weatherproof plastic and has a substantially cuboid shape. It extends in a longitudinal direction here in the direction of the y-coordinate and in a width direction in the direction of the x-coordinate, with a height extending in the z-direction.
- the first sensor unit 3 is arranged here in an upper quarter of the housing 2 and has a first sensor 4.
- the sensor 4 is designed as a potentiometer.
- the potentiometer cooperates with an actuator 5, which is displaceable in an effective direction 5a in the x direction.
- the first sensor unit 3 is for detecting the following states of a window or a door, namely, "opened,” “tilted,” “closed.” A detailed description can be found in the document EP 1 91 8 890 B1 The first sensor unit 3 will therefore not be further described below unless it is necessary in the context.
- a method according to the invention can also be implemented with a different sensor technology for detecting the opening state of the window or the door than the detection shown here by way of example by means of the actuator 5 and the potentiometer as the sensor 4. Accordingly, a device according to the invention also have a different type sensor for detecting the opening state of the window or the door, for example, at least one reed contact, which is actuated depending on the opening state of an associated magnet.
- a carrier unit 6 with the second sensor unit 7 and a control device 1 0 is arranged.
- the carrier unit 6 is here a circuit board, for example in multilayer design with corresponding SMD components, to claim the smallest space.
- the second sensor unit 7 has at least one second sensor 8, which is arranged here aligned in the x-direction.
- the second sensor 8 serves to detect a further state of the window or the door, in which vibrations are generated. These vibrations can be both mechanical and acoustic. Such a condition is caused, for example, by an act of violence and associated with a process of damage, destruction or breakage of components of the window or door.
- This may include, for example, smashing and bursting of glass (windows), breaking and / or shattering of wood and / or plastic components, breaking, bending or cracking noises of metal components, pops of tools such as crowbar, hammer, chisel, screwdriver in connection with other components occur.
- smashing and bursting of glass windshields
- breaking and / or shattering of wood and / or plastic components breaking, bending or cracking noises of metal components
- pops of tools such as crowbar, hammer, chisel, screwdriver in connection with other components occur.
- force can be conscious, e.g. as burglary or property damage, but also circumstantial, e.g. by weather or accident and the like. respectively.
- Mechanical and acoustic vibrations e.g. through effects such as rain, storm, hail, thunderstorms and the like. as well as e.g. Bird strike are conditional and are detected by the second sensor unit 7, can be excluded in an evaluation of the second sensor unit 7 thereby generated signals.
- the second sensor 8 it is also possible for the second sensor 8 to be configured for a specific frequency range of noises in the event of violence so that it is precisely such vibrations that can be detected particularly reliably.
- the second sensor 8 is a vibration / vibration sensor, for example with a piezoceramic bimorph element. Such a transmitter converts mechanical and / or acoustic vibration energy into electrical energy.
- the arrangement of the second sensor 8 can be carried out so that in particular structure-borne noise and possibly also airborne sound is recorded.
- an acceleration sensor e.g. in MEMS technology, for the detection of vibrations or vibrations.
- the vibration / vibration sensor as the second sensor 8 is arranged in the housing 2 together with the first sensor 4 for detecting the opening state. That offers the advantage of a compact design with minimal cabling. Since the housing 2 is provided for arrangement on a frame, possibly in the rebate of the window (the door), a force acting on the disc, eg a hammer blow, indirectly detected.
- the second sensor 8 externally from the common housing 2, for example in the manner of a known glass-breakage sensor, on a window pane or door and to connect it to the control device 10 via a cable.
- a drive circuit including the necessary electric power supply is disposed in the vicinity of the second sensor 8. Furthermore, the control device 10 is here on the carrier unit.
- the control device 10 will be explained in more detail below in connection with FIGS. 2 and 3. In this context, the inventive method is explained in detail.
- a power supply 9 is arranged in the lower portion of the housing 2 in Fig. 1. This can e.g. be suitable button cells with appropriate performance for the first sensor unit 3 and the second sensor unit 4.
- Fig. 2 is a schematic block diagram of an embodiment of the device 1 according to the invention shown in FIG. 1.
- the control device 10 comprises an adaptation unit 1 1, two evaluation units 1 2, 1 3 and a transmission unit 1 5 with an antenna 1 6.
- the first sensor unit 3 with the first sensor 4 is connected to the evaluation unit 1 3, which in turn is connected to the transmitting unit 15. This is described in detail in the document EP 1 91 8 890 B1 including the mode of operation.
- the opening state of the window or the door is detected and output. At least the states “open” and “closed” and preferably additionally the state “tilted” are detected and output.
- the second sensor unit 7 with the second sensor 8 is connected to the matching unit 1 1.
- the adaptation unit 11 may, for example, have filter circuits which are used for selective filtering of an output signal of the second sensor. sors 8 serve.
- an amplifier circuit for the unfiltered and filtered signal is provided.
- the filter circuit (s) may also be adjustable to accommodate different window and door materials (glass / metal / wood, etc.).
- the adaptation unit 1 1 also has an electrical power supply for the second sensor 8. This is e.g. required for sensor elements for which a higher operating voltage than the supply voltage of the power supply is necessary.
- the evaluation unit 12 carries out an evaluation of the signals amplified and filtered by the adaptation unit 11. In this case, a time length and amplitude can be evaluated with. Waveforms may also be analyzed, which are compared to previously stored waveforms corresponding to certain characteristic noises of force application.
- a bird strike is e.g. short in time, but has only a moderate amplitude in the waveform.
- a hammer blow to smash a disc is also short in time, but the detected signal has a much higher amplitude and can have different frequencies and frequency responses to a bird strike.
- the evaluation unit 1 2 may also have a device for plausibility of signals.
- the evaluation unit 1 2 If the evaluation unit 1 2 has determined after evaluation that a state of the window or the door corresponds to a use of force, the evaluation unit 1 2 generates a corresponding signal, which forwards it to a logic unit 14.
- the logic unit 14 is also supplied to the determined by the evaluation unit 13 opening state of the window or the door.
- a force action detected by the evaluation unit 12 is not transmitted unconditionally to the transmitting unit 15 and thus signaled by the device, but conditionally taking into account the opening state of the window or the door.
- the following logic is used: When the window (or door) is open, or only temporarily and simultaneously with the action of violence, a recognized force is not output. Rather, it is believed that such a force-in-effect is not intrusion-related, but was caused, for example, by a gust of wind.
- a recognized force action is only output if, within a period of time after detection of the force effect, the opening state of the window or the door does not change, in particular does not change to the state "closed” Opening state namely to the state "closed”, it can be assumed that here too a gust of wind is the cause.
- Both logic relationships reduce the likelihood that a false alarm will be triggered.
- the sensitivity in the evaluation unit 12 can be increased compared with, for example, a known glass-breakage sensor.
- Known sensors trigger only at an actual glass breakage, as any other threshold would too often lead to false alarms, for example, the described wind-induced slamming. Disadvantage is thereby burglary attempts, such. an unsuccessful impact on the disc not recognized.
- burglary attempts can also be detected without the risk of false alarms increasing.
- the transmission unit 15 then sends the signal received from the evaluation unit 13 or from the logic unit 14 to a receiver, e.g. a monitoring station which then takes predetermined steps, e.g. Alerting appropriate places, initiates.
- a receiver e.g. a monitoring station which then takes predetermined steps, e.g. Alerting appropriate places, initiates.
- FIG. 3 shows a schematic block diagram of a variant of the embodiment according to FIG. 2.
- an additional evaluation unit 1 7 is provided in this variant, which parallel to the already existing evaluation unit 13 between the first sensor unit 3 and the transmitting unit 14 is connected.
- the additional evaluation unit 1 7 evaluates the output signal of the first sensor 4 in such a way that they are irregularities or artifacts in the amplitude, which are superimposed on the usually output DC voltage signal. These artifacts can come from a violence.
- the additional evaluation unit 1 7 can also detect and evaluate vibrations in a different way than the evaluation unit 1 2. These can likewise be taken into account in the logic unit 14, for example, be used to check the plausibility of the signals detected by the second sensor unit 7.
- the adaptation unit 1 1 and the evaluation units 1 2, 13, 1 7 and the logic unit 14 may be realized discretely or at least partially by a program of a microprocessor or microcomputer of the control device 10.
- a preferred orientation of the second sensor 8 in a particular direction is due to a structure of the sensor device.
- a plurality of sensor components may be associated with the second sensor unit 7, of which e.g. one each in the x-direction, one in the y-direction and one in the z-direction is arranged with the respective most sensitive effective direction.
- the combination of the different information opening state and action of violence within the device itself advantageously takes place.
- a linkage in alternative embodiments of the method is also separate from the evaluation the sensor signals can be done.
- the information of the first and second sensor unit after evaluation by the respective evaluation units 12, 13 are also transmitted separately to an (alarm) center, within which then the corresponding linkage of the information takes place, so that a detected force exposure only depending on the detected opening state of the window or the door is signaled.
- control device 1 1 adaptation unit
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017110279.5A DE102017110279A1 (en) | 2017-05-11 | 2017-05-11 | Apparatus and method for detecting and signaling a status of a window or door |
PCT/EP2018/062011 WO2018206649A1 (en) | 2017-05-11 | 2018-05-09 | Device and method for detecting and signaling a state of a window or a door |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3622492A1 true EP3622492A1 (en) | 2020-03-18 |
Family
ID=62148383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18723824.1A Withdrawn EP3622492A1 (en) | 2017-05-11 | 2018-05-09 | Device and method for detecting and signaling a state of a window or a door |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3622492A1 (en) |
DE (1) | DE102017110279A1 (en) |
WO (1) | WO2018206649A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10208451A1 (en) * | 2002-02-27 | 2003-09-04 | Bremicker Soehne Kg A | Window / door lock |
US7187280B2 (en) * | 2003-07-31 | 2007-03-06 | Techko, Inc. | Alarm system with thin profile |
DE102005008422A1 (en) * | 2005-02-24 | 2006-08-31 | Eduard Schindler | Handle bar for opening/closing of door and window, has evaluation unit which outputs alarm on recognizing breaking of window/door based on evaluation of structure-borne sound signal from window/door |
DE202006016872U1 (en) * | 2006-11-01 | 2007-01-11 | Efp Vertriebs- Und Servicegesellschaft Mbh | Window/door e.g. main entrance door, opening condition indicating device, has sensor with resistor changed based on opened, tilted and closed condition of wing, where sensor is formed based on potentiometer having slider adjustable by wing |
DE102011008654B4 (en) * | 2011-01-14 | 2017-07-20 | Link Gmbh | Hardware-integrated monitoring device |
DE102013220176A1 (en) * | 2013-10-07 | 2015-04-23 | Robert Bosch Gmbh | Device and method for determining a state of an object to be monitored |
US9952029B2 (en) * | 2015-04-08 | 2018-04-24 | Google Llc | Guided installation feedback for an opening sensor |
DE102015119613A1 (en) * | 2015-11-13 | 2017-05-18 | Efp Vertriebs- Und Servicegesellschaft Mbh | Device for detecting a state of a window or a door |
-
2017
- 2017-05-11 DE DE102017110279.5A patent/DE102017110279A1/en not_active Withdrawn
-
2018
- 2018-05-09 WO PCT/EP2018/062011 patent/WO2018206649A1/en unknown
- 2018-05-09 EP EP18723824.1A patent/EP3622492A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE102017110279A1 (en) | 2018-11-15 |
WO2018206649A1 (en) | 2018-11-15 |
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