EP3985629B1 - Shading device with alarm device - Google Patents

Description

According to the preamble of claim 1, the invention relates to a shading device for shading a building opening with an alarm device which generates an alarm signal in the event of an unusual action. According to the preamble of claim 13, the subject matter of the present invention is also an alarm device for installation in a shading device, which generates an alarm signal in the event of undesired manipulation during a break-in.

The importance of products that represent an increase in terms of burglary protection or product safety is increasing both in the sun protection area and in the smart home area.

Shading devices for building openings, such as roller shutters and external venetian blinds, achieve a burglary-inhibiting effect mainly by increasing the time it takes to penetrate/dismantle/release the elements to be overcome for a burglary through passive security measures (e.g. anti-lift devices, protective measures against slats being pressed in and torn out). .

These are preventive and passive measures that are intended to deter the burglar from breaking in. However, an attempted break-in cannot be detected via these passive measures and therefore no alarm signal can be triggered.

Another problem with passive security elements is that many burglars are not deterred at first and continue trying to break in with rough tools. Even if the security elements are ultimately able to prevent a burglary, the shading devices or the building envelope are often severely damaged.

There are also systems for roller shutters that use tilt sensors to monitor the position of the end rail and alert you if it is tilted. Such a solution is in DE 202012001842 U1 known. However, the cause of the alarm can be varied and does not necessarily have to be caused by an attempted break-in. The alarm can also be triggered, for example, if the roller shutter hits an obstacle. In addition, deactivation by a knowledgeable burglar is unproblematic, so that the security effect is limited

There are also systems for front-mounted roller shutters, which detect unauthorized persons in the sensor area/in the window area and as a result move the curtain in the first step to deter them and then close them in the second step.

• Glasbruchkontakte
• Magnetkontakte für Fenster und Türen
• Infrarotsensoren
• Erschütterungssensoren im Fensterrahmen
• Kamerasysteme und Infrarotsysteme für den Innenraum
• Bewegungssensoren zur Integration in den Fensterrahmen

In addition to the solutions described in the prior art, which are associated with the shading devices, there are a large number of other solutions for burglary protection:

• glass breakage contacts
• Magnetic contacts for windows and doors
• infrared sensors
• Vibration sensors in the window frame
• Camera systems and infrared systems for the interior
• Motion sensors for integration into the window frame

The listed solutions and approaches to improve burglary protection are all installed directly on or in the window.

In addition, the majority of solutions only react when damage has occurred, so that the building envelope is usually damaged.

In summary, it can be said that the passive measures to prevent burglary do not automatically trigger an alarm and if the burglars are not immediately deterred by the obstacle as such, damage to the shading device is to be expected first and then it too serious damage to the building envelope.

In systems with sensors for alarm triggering, there is a major problem in coordinating the sensors in such a way that, on the one hand, false triggering is avoided, but on the other hand, attempted break-ins are always reliably detected. Once triggered, with known solutions it is only possible with difficulty to deactivate them in a safe manner, since a simple deactivation by the burglar should of course not be possible. This is very annoying, especially in the case of false alarms.

The U.S. 9,909,363 B1 shows a sun protection system in whose upper rail a pressure sensor is arranged, which is intended to detect manipulation of the system during an attempted break-in by detecting a pressure.

The WO2017/050810 A1 shows a sun protection device that uses various sensors to detect obstacles in the travel path of the curtain and to prevent damage by avoiding the process in such a case. Intrusion detection is not possible.

The object of the present invention is to achieve reliable alarm triggering with a reduction in the number of false alarms in the event of an attempted break-in at a shading device or a malfunction.

According to the invention, the object is achieved by a shading device of the type mentioned at the beginning, in which the alarm device has a power supply, an acceleration sensor on a moving or another suitable part of the shading device, a data memory for storing acceleration profiles and a data processor for comparing measured acceleration values with the stored acceleration profiles, with the data processor generating the alarm signal when the measured acceleration values deviate from one or more defined threshold values from a stored acceleration profile to be expected for normal operation of the sun protection system and/or the measured acceleration values correspond to stored acceleration profiles typical of an attempted break-in or a malfunction.

The solution according to the invention offers the advantage that, for the detection of an attempted break-in, on the one hand acceleration values are recorded which are particularly meaningful for an attempted break-in, and on the other hand the alarm is not triggered on the basis of absolute values alone, but by means of the stored acceleration profiles to be expected during normal operation a comparison is made. As a result, the triggering can also be tailored to the typical features of the respective shading device, for example installation in a wind-exposed location, the type of curtain guidance and the like. A comparison of the measured acceleration values with the stored profiles over a certain period of time can be advantageous in order to further improve the accuracy. Threshold values can therefore mean, for example, specific maximum amplitude values and/or specific amplitude values at specific time intervals or over a specific period of time. Falling below certain values for a certain period of time can also be considered an anomaly. The acceleration sensor can be arranged on moving parts or other suitable parts of the system, with the other suitable parts meaning parts into which typical movement patterns are initiated in any case during an attempted break-in but also possibly during operation, which are recorded and evaluated by the sensor can become. Such movement patterns can be expressed, for example, in characteristic vibrations of parts that are rigidly arranged.

While, depending on the type of system, the acquisition and storage of acceleration values in one degree of freedom of movement enables good detection, it is particularly preferred that the acceleration sensor acquires the acceleration values in two or three movement coordinates and a comparison by the data processor with correspondingly stored two- or three-dimensional Acceleration profiles takes place. With the recording of further degrees of freedom, the quality of the recording of an unusual occurrence, eg a burglary or an operational disruption, can be recorded with a lower error rate. If necessary, other variables could also be recorded, eg rotational degrees of freedom.

An embodiment of the invention is particularly preferred in which the acceleration sensor is arranged in or on a bottom rail of a curtain of the shading device.

Bottom rails are particularly suitable for positioning the accelerometer, since burglars usually try to lift the bottom rail first. Since this is located at the lower end of the curtain, for example, in the case of a slat curtain of an external venetian blind or a fabric curtain of an awning, attempts to remove the curtain itself always lead to significant movements of the lower rail. This also applies to roller shutters, where the sensor can be arranged in the lowest or one of the lower roller shutter slats.

The existing acceleration sensors can also be used to detect anomalies during operation, e.g. obstacles in the movement path of the curtain when moving. To this end, a further acceleration profile can be stored which is typical of an abnormal operating state, with the data processor triggering the alarm signal or another warning signal if the measured acceleration signals match at least one further acceleration profile. However, since it can also be assumed during a deliberate movement of the curtain that no attempted break-in is currently taking place, the deviation from an acceleration profile representing a normal movement process alone can generate the warning signal in such a case, without it being necessary to store a separate special Acceleration profile required. The logic of the data processor can be designed in such a way that it recognizes that in such a case it is not a question of an attempted break-in and then avoids triggering an alarm, but nevertheless warns the user of the impermissible operating condition.

In a further preferred embodiment of the invention, an inclination sensor can be provided on a moving part of the shading device to detect the position of this moving part for the detection of anomalies during operation, with the data processor comparing its measured values with stored values of permissible inclinations and emitting the alarm signal if a limit value is exceeded or triggers another, possibly much quieter, warning signal.

In a particularly preferred embodiment of the invention, an acoustic signal transmitter is provided which emits a loud alarm tone when the alarm signal is triggered. Alternatively or additionally, the alarm signal can be transmitted to a control center. Piezo elements are suitable as loudspeakers, which can generate a volume of over 90dB with a low power requirement.

In an advantageous development of the invention, it can be provided that the threshold value for triggering the alarm signal can be set in two or more stages. Such an adjustment enables a fine adjustment of an already installed system. For example, when installing a shading device in a location exposed to the wind, the sensitivity of the alarm triggering can be reduced in order to avoid false triggering, while the sensitivity for intrusion detection can be increased in wind-protected locations.

Even more adaptability of the alarm device can be achieved by storing alternative algorithms for comparing the measured acceleration values with the stored acceleration profiles and/or alternative acceleration profiles for comparing with the measured acceleration values, with switching between the stored algorithms and/or acceleration profiles for adaptation being possible .

Such a solution allows the alarm device to be adapted to very different applications, which is particularly advantageous if it is not initially known with which type of shading device the alarm device is to be used. Thus, an alarm device can be prepared for use in different types of devices with different types of curtain guides, with which they are then subsequently paired.

In yet another preferred embodiment of the invention, it is provided that the alarm device has a radio interface that enables radio transmission of the alarm signal to an external receiver.

This measure expands the field of application of the solution according to the invention, because the alarm signal can also be forwarded to an alarm center, for example.

Alternatively or additionally, a bidirectional radio interface can be provided in order to transmit the alarm signal or warning signal to a receiver Allow transmission of operating signals and control signal to the alarm device from a transmitter. An alarm can also be deactivated using this form of communication.

The alarm device is preferably designed as a self-sufficient module with its own power supply, which has batteries or a rechargeable battery, for example. This avoids the problem of the power supply to a moving part, since wiring is usually complex.

In particular when it is designed as a self-sufficient module, the alarm device can have operating elements for programming the alarm device and/or for deactivating a triggered alarm signal, in particular when no radio connection is available.

The deactivation of a triggered alarm can be accomplished, for example, by entering a release code.

The deactivation code or other pin code can also be used to unlock the programming function of the alarm device in the first place to prevent tampering by third parties.

The alarm device can have display devices with which operating states, battery charge states, deactivation or programming processes can be visualized. In a simple case, the display device can consist of several LEDs.

The alarm's electronics can also give a warning signal when the charge level of batteries is approaching a lower limit, in order to avoid complete alarm failure due to over-discharge.

The design as a separate module makes it appear advantageous to initially design the alarm device independently of a specific shading device. In addition to a shading device with an alarm device as described above, the subject of the present invention is also an alarm device for forming a shading device according to one of the preceding claims, which generates an alarm signal in the event of unwanted manipulation during a break-in, the alarm device as a self-sufficient module with a housing, a Power supply, an acceleration sensor, a data memory designed to store acceleration profiles and a data processor to compare measured acceleration values with the stored acceleration profiles, the data processor then generating the alarm signal when the measured acceleration values deviate above a threshold value from a stored acceleration profile to be expected for normal operation of the shading device and /or the measured acceleration values match the stored acceleration profile typical of an attempted break-in.

Such an alarm device can be used as a retrofit solution for shading devices that have already been installed, without special requirements being required of this shading device; only an acceleration profile that is plausible for this system must be stored for comparison with the measured acceleration values.

In order to mount the alarm device on a moving part of the shading device, provision is preferably made for fastening means to be provided on the housing for attachment to a bottom rail of a curtain of the shading device. These can be paired with corresponding fasteners on or in the bottom rail or also enable universal mounting on rail elements.

Of course, for simple and effective use on a shading device, it is advantageous if an acoustic signal transmitter is preferably provided in the housing, which emits a loud warning tone when the alarm signal is triggered, which, for example, exceeds a volume of 90 dB, which can be done without a large power requirement Piezo speakers can be implemented.

In order to be able to use an alarm device universally in different types of shading devices and adapt it to them, a particularly preferred embodiment of the alarm device provides for alternative algorithms for comparing the measured acceleration values with the stored acceleration profiles and/or alternative acceleration profiles for comparison are stored with the measured acceleration values, it being possible to switch between the stored algorithms and/or acceleration profiles for adaptation.

Furthermore, a separate alarm device can also have all the features mentioned in connection with the shading device discussed at the outset, individually or in combination.

Fig. 1

eine Schrägansicht einer Unterschiene eines Raffstores mit einer Alarmvorrichtung;

Fig. 2

einen Querschnitt der Unterschiene gemäß Fig. 1;

Fig. 3

einen Querschnitt einer Unterschiene mit einer alternativen Befestigung der Alarmvorrichtung;

Fig. 4

eine Draufsicht auf ein Bedienfeld der Alarmvorrichtung;

Fig. 5

eine Ansicht der Alarmvorrichtung gemäß Fig. 4 von unter;

Fig. 6

eine beispielhafte Gegenüberstellung typischer Zeitverläufe der Beschleunigung bei einem Einbruchsversuch und bei einem regulären Einfahren.

Further features, details and advantages of the invention result from the wording of the claims and from the exemplary embodiment described below with reference to the drawing. Show it:

1

an oblique view of a lower rail of a Venetian blind with an alarm device;

2

a cross-section of the lower rail according to FIG 1 ;

3

a cross section of a bottom rail with an alternative attachment of the alarm device;

4

a plan view of a control panel of the alarm device;

figure 5

a view of the alarm device according to FIG 4 from below;

6

an exemplary comparison of typical time curves of the acceleration during an attempted break-in and during a regular drive-in.

1 shows an oblique view of a typical bottom rail 10 of an external venetian blind (not shown) as an example of a shading device with an alarm device 11. External venetian blinds also have a curtain made up of a large number of slats that can be gathered into a package by means of a drive device. As a rule, a turning mechanism is also provided, with the help of which the inclination of the slats can be adjusted. The in 1 shown bottom rail 10, which closes the curtain down. The parts of the external venetian blind are not relevant to the invention and have therefore been omitted so as not to overload the illustration. An alarm device can also be arranged in or on other moving elements of the external venetian blind or other shading devices for intrusion detection, eg in the end rods of roller shutter systems or the drop profiles of a vertical awning.

The bottom rail has a profile body 12 that is hollow on the inside (see 2 ), at the lateral ends of which an end cap 14 is inserted, each with a guide element 16 for guiding in lateral guide rails, which are also not shown for reasons of simplification.

At the in Figures 1 and 2 shown embodiment, the alarm device 11 has a housing 18 which is inserted into an opening 20 on the underside of the bottom rail 10 and attached to it. A control panel 22 of the alarm device 11 remains visible and accessible. A circumferential edge 24 is provided around the control panel, which protrudes beyond the housing 18 and, as a stop, defines the installation depth of the housing 18 in the profile body 12 by resting against the edge of the opening 20 .

The alarm device 11, which represents a self-sufficient module 100 with its housing 18, has a battery-backed power supply 26, which is figure 5 is illustrated schematically. Furthermore, the alarm device 11 has acceleration sensors (not shown) that record the acceleration in all three movement coordinates, a data memory (also not shown) in which acceleration profiles are stored, as they occur when the lower rail 10 moves regularly in everyday life, and a data processor ( also not shown), which compares the measured acceleration values with the stored acceleration profiles using a stored algorithm and generates an alarm signal if a deviation threshold value is exceeded. In addition or as an alternative, movement patterns typical of an attempted break-in can also be stored as an acceleration profile, with the data processor then triggering an alarm signal in the event of a match.

If a deviation from a stored, regular acceleration profile occurs during regular operation, the data processor can assume that it is not an attempted break-in, but nevertheless an abnormal operating state. The alarm signal or a less loud warning signal can then also be output.

An inclination sensor (not shown) is also provided for detecting an abnormal operating state, which triggers the warning signal via the data processor when a limit value is exceeded. The data from the inclination sensor can also be used to detect intrusion.

A loudspeaker 28 is integrated into the housing, which emits the alarm signal after it has been triggered with a volume of preferably more than 90 dB, if necessary a quieter warning signal if a malfunction is detected.

In addition to holes 30 for the passage of sound, LEDs 32 and two function keys 34, 36 are also arranged on the control panel 22 already mentioned. The LEDs can have a sensitivity threshold or display an operating mode. In the exemplary embodiment shown, the number of sensitivity thresholds corresponds to the number of LEDs 5, which can be set to increase or decrease with the function keys 34, 38. The setting of the threshold value is provided in order to adjust the alarm threshold, for example, to a wind-exposed or wind-protected installation situation and thus to minimize the number of false triggerings with the most sensitive alarm triggering possible. The function keys 34, 36 can also be used to deactivate a triggered alarm signal by being actuated according to a specific pattern, eg by entering a pin code, the LEDs can be used for feedback, with the number of lit LEDs standing for a digit, for example The PIN code can also be used to enable programming, i.e. to protect the device from unauthorized use.

In order to optimally adjust the venetian blind to the respective carrier venetian blind and thus also to be able to guarantee an optimal movement analysis, you can choose from different programming modes. A maximum of 32 modes are available for this in the selected exemplary embodiment, each of which represents a combination of the type of external venetian blind including the type of guidance of the external venetian blind.

Since such an adjustment to a specific type of shading device generally only has to be carried out once, a programming button 38 provided for activating the programming is located on the side of the housing 18 facing away from the control panel 22 (see FIG figure 5 ).

There are thus 32 programming modes and 5 sensitivity levels available in order to optimally adjust the venetian blind to its carrier venetian blind and the shoring situation.

In 3 an installation situation of the alarm device 10 is shown, as is typical for a retrofit solution. The alarm device 11 has fastening means 40 in the form of a holder that is subsequently fixed to the underside of a lower rail 110 of an already existing shading device.

In 6 Two example acceleration profiles are shown to illustrate the operation of the alarm device. The three coordinates of an acceleration measurement during an attempted break-in are shown on the left-hand side of the illustration. Typical are strong rashes over a short period of time as a result of a blow or other severe application of force. On the right side of the figure, on the other hand, an acceleration profile for the three movement coordinates is shown, as is to be expected when the curtain is raised normally. Small acceleration peaks also occur here, but these are distributed over a longer period of time. Depending on the algorithm used, the data processor can now use absolute acceleration peaks and/or their distribution over time to determine that there is no regular travel process, but rather an attempted break-in. Accordingly, the alarm signal is then triggered with the output of the alarm tone via the loudspeaker.

The alarm device 11 shown has the advantage that it is designed as a self-sufficient module that is already fully operational without any form of electrical assembly after it has been attached to a moving part of a shading device. Nevertheless, a radio module (not shown) can also be provided in the housing 18 of the alarm device 11, which can unidirectionally transmit the alarm and/or warning signal to a receiver, e.g. to an alarm center. In the case of a bidirectional configuration of the radio module, operation/programming/deactivation in the event of an alarm can also be carried out via the radio connection.

The invention is not limited to one of the embodiments described above, but can be modified in many ways.

Reference List

10, 110

bottom rail

11

alarm device

12

profile body

14

end cap

16

guide element

18

Housing

20

opening

22

control panel

24

surrounding border

26

power supply

28

speaker

30

holes

32

LEDs

34, 36

function keys

38

programming button

40

fasteners

Claims (16)

1. Shading device for shading a building opening having an alarm device (11) which in the case of an unusual action generates an alarm signal, characterised in that the alarm device (11) has a power supply (26), an acceleration sensor on a moving part or other suitable part of the shading device, a data store for storing acceleration profiles and a data processor for comparing measured acceleration values stored with acceleration profiles, wherein the data processor generates the alarm signal when the measured acceleration values have a deviation of one or several defined threshold values from a stored acceleration profile which is to be expected for the normal operation of the sun protection apparatus and/or when the measured acceleration values show correspondence with stored acceleration profiles which are typical for a break-in attempt or operational disturbance.
2. Shading device according to claim 1, characterised in that the acceleration sensor captures the acceleration values on two or three motion axes and a comparison is carried out by the data processor with correspondingly stored two-dimensional or three-dimensional acceleration profiles.
3. Shading device according to claim 1 or 2, characterised in that the acceleration sensor is arranged in or on a lower rail (10; 110) of a curtain of the shading device.
4. Shading device according to any of claims 1 to 3, characterised in that at least one further acceleration profile is stored which is typical for an abnormal operational state, wherein in the case of a correspondence of the measured acceleration signals with this at least one further acceleration profile, the data processor triggers the alarm signal or another warning signal.
5. Shading device according to any of the preceding claims, characterised in that an inclination sensor is provided on a moving part of the shading device for detecting the position of this moving part, wherein the data processor compares its measurement values with stored values or values of admissible inclinations and in the case of a threshold being exceeded triggers the alarm signal or another warning signal.
6. Shading device according to any of the preceding claims, characterised in that an acoustic signal generator (28) is provided which emits a loud alarm sound when the alarm signal is triggered.
7. Shading device according to any of the preceding claims characterised in that the threshold value for triggering the alarm signal can be set in two or more steps.
8. Shading device according to any of the preceding claims, characterised in that in the alarm device are provided alternative algorithms comparing the measured acceleration values with the stored acceleration profiles and/or alternative acceleration profiles are stored for comparison with the measured acceleration values, wherein it is made possible to switch between the stored algorithms and/or acceleration profiles in order to carry out the adaptation.
9. Shading device according to any of the preceding claims, characterised in that the alarm device has a radio interface which facilitates the transmission of the alarm signal by radio to an external receiver.
10. Shading device according to any of the preceding claims, characterised in that a bidirectionally configured radio interface is provided, in order, in addition to the transmission of the alarm signal or warning signal to a receiver, to facilitate the transmission of operating signals and control signal to the alarm device (11) from a transmitter.
11. Shading device according to any of the preceding claims, characterised in that the alarm device (11) is configured as an autonomous module with its own power supply (26).
12. Shading device according to any of the preceding claims characterised in that the alarm device (11) has operating elements (34, 36; 38) for programming the alarm device (11) and/or for deactivating triggered alarm signal.
13. Alarm device for forming a shading device according to any of the preceding claims, which, in the case of an unusual action generates an alarm signal, characterised in that the alarm device (11) is configured as an autonomous module having a housing (18), a power supply (26), acceleration sensor, a data store for storing acceleration profiles and a data processor for comparing measured acceleration values with the stored acceleration profiles, wherein the data processor generates the alarm signal when the measured acceleration values have a deviation above one or several defined threshold values from a stored acceleration profile which is to be expected for the normal operation of the shading device and/or when the measured acceleration values show correspondence with stored acceleration profile which is typical for a break-in attempt or failure.
14. Alarm device according to claim 13, characterised in that fastening means (40) are provided on the housing for attaching to a lower rail (110) of a curtain of a shading device.
15. Alarm device according to claim 13 or 14, characterised in that in the housing an acoustic signal generator (28) is provided which emits a loud warning tone when the alarm signal is triggered.
16. Alarm device according to any of claims 13 to 15, characterised in that in the alarm device alternative algorithms are provided comparing the measured acceleration values with the stored acceleration profiles and/or alternative acceleration profiles are stored for comparison with the measured acceleration values, wherein for purposes of adapting, the switch is made possible between the stored algorithms and/or acceleration profiles.

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