DE102020125930A1 - Device and method for monitoring areas or rooms - Google Patents

Abstract

The invention relates to a device for monitoring areas or rooms for detecting objects located on a monitored area or in a monitored room or objects entering the monitored area or the monitored room. A scanning device (1) of the device comprises a transmitting device (7) for transmitting measurement signals and a receiving device (13) for receiving signals reflected from the detected object. The monitored area or the monitored room can be displayed in a display device (27, 47) of a data processing system in a two-dimensional image. With the help of the data processing system, a sub-area (45, 45a-45e) of the monitored area or a sub-space of the monitored space can be selected, to which a predefined action and/or a predefined monitoring function can be assigned. In an alternative device, there are a first and a second Scanning devices (1) are provided, which are arranged at a distance from one another and whose monitored areas or monitored areas at least partially overlap.Furthermore, a method for monitoring areas or areas is disclosed, in which the received reflected signals are transmitted to display points or display areas and are displayed in a display device (27, 47) in a two-dimensional image corresponding to the properties of the detected object.

Description

The present invention relates to a device for monitoring areas or spaces for detecting objects located on a monitored area or in a monitored space or objects entering the monitored area or space, according to claims 1 and 18. The invention relates also a method for monitoring areas or spaces, by which objects located on a monitored area or in a monitored space or objects entering the monitored area or space are detected, according to claim 13.

To protect against unauthorized entry into residential or business premises, surveillance systems are known which can trigger alarm functions and are therefore intended to act as a deterrent. In most cases, either camera surveillance systems, light barrier systems or scanning systems with reflected beams are used.

From the EP 0 029 827 B1 a device and a method for room surveillance by means of pulsed directional radiation are known. In this case, light pulses from a laser light source are emitted in a time sequence in different directions in a site to be monitored at a defined time and in a respectively defined azimuth angle and elevation angle and reflected on an object located in the site. With the help of signal data of the reflected radiation, which is detected by a radiation receiver, unauthorized intrusion can be detected and corresponding warnings can be delivered and, if necessary, defensive measures can be initiated.

Proceeding from this method and this device for room monitoring, the object of the present invention is to specify a device and a method for monitoring areas or rooms, through which an improved representation of the monitored area or the monitored room on a display device and a simple selection of parts of this area or this room are guaranteed to carry out special measures. In addition, a complete monitoring is also aimed at in built-up areas.

The above object is achieved by a device according to the features of claim 1.

The device according to the invention for monitoring areas or rooms for detecting objects located on a monitored area or in a monitored room or objects entering the monitored area or the monitored room comprises at least one scanning device, a transmitting device for transmitting measurement signals and a Includes receiving device for receiving signals reflected from the detected object. The monitored area or the monitored space can be displayed in a display device, in particular on a screen, of a data processing system in a two-dimensional image. A partial area of the monitored area or a partial space of the monitored space can be selected with the aid of the data processing system, wherein a predefined action and/or a predefined monitoring function can be assigned to the partial area or the partial space. With the help of the representation, in particular by means of a true-to-scale image, on the display device of the data processing system, the monitored area or the monitored room can be completely surveyed and partial areas or partial rooms, the monitoring of which leads to an action and/or a monitoring function resulting in the detection of a special feature should be selected or defined more precisely. It is possible to define these sub-areas or sub-spaces with an accuracy of a few centimetres.

In particular, objects close to the ground can be detected with the scanning device, which can have a laser scanning device. With the help of such a ground-level scanning, those penetrating objects whose penetration can be or can become critical for the monitored area or the monitored space can be detected with as little effort as possible.

The data processing system is or includes in particular a computer or a computer-like device, which can also be a mobile device such as a smartphone, tablet computer or notebook. While such a mobile device can be particularly helpful for monitoring at any time, a workstation with a large screen, for example, has advantages when defining partial areas or partial rooms because of the better overview and especially with higher resolution. In this respect, it is advisable to choose a particularly suitable data processing device for each purpose.

The two-dimensional image displayed or capable of being displayed in the display device can be a two-dimensional floor plan or it can have one. Such a floor plan can be transferred from building plans and/or cadastral data, for example.

The assigned or assignable action and/or monitoring function can be selected in particular from a predefined configuration menu that can be contained in a program that is or can be executed by the data processing system or that the program accesses.

In particular, at least one object to be monitored is arranged on the monitored area or in the monitored space, which object can be displayed or is displayed in the two-dimensional image in the display device, advantageously with all its contours and outlines. It is advantageous if the object to be monitored is reproduced true to scale in the two-dimensional image. Such an object can be a house whose conceivable access or intrusion openings, such as doors or windows, may require special surveillance. The doors or windows themselves can also be or will be defined as objects to be monitored. As a further example, a delimitation device, such as a fence, for example, over which an unauthorized intrusion can be surmounted or crossed, is conceivable as an object to be monitored.

However, the object to be monitored does not have to be permanently connected to the monitored area or the monitored room in accordance with the aforementioned examples. Rather, moving objects, such as a motor vehicle, can also be targets of a monitoring process. In addition, "surveillance" does not only mean the observation of desired objects on the monitored area or in the monitored space, but the term "detected object" also includes an undesired object, such as a possibly malicious intruder, a possibly desired one and possibly lost visitors on a company site, or even just an incorrectly placed pallet.

• - Alarm durch zugeordnete Geräte oder Einrichtungen;
• - Aktivierung oder Deaktivierung wenigstens einer weiteren Zone;
• - Alarm bei einem erkannten Objekt, insbesondere einem sich in einem ungewöhnlichen Zustand oder an einer ungewöhnlichen Stelle befindlichen Objekt;
• - Anzeige der Verweildauer eines Objekts durch charakteristische Darstellung, insbesondere farbliche Darstellung

auslösbar.One embodiment of the invention provides that the selected partial area to be monitored or the selected partial space to be monitored, or possibly the object to be monitored, can be assigned to a zone. At least one of the actions is through this zone

• - Alarm by associated devices or facilities;
• - activation or deactivation of at least one other zone;
• - Alarm for a detected object, especially an object in an unusual condition or in an unusual location;
• - Display of the dwell time of an object by means of a characteristic representation, in particular a colored representation

triggerable.

• - Erkennung einer Bewegung eines Objekts, insbesondere Erkennung der Bewegungsrichtung und/oder der Geschwindigkeit und/oder der Beschleunigung;
• - Erkennung der Anzahl von Objekten, die insbesondere einer definierten Objektgruppe zugeordnet oder zuordenbar sind;
• - Erkennung der Größe eines Objekts;
• - Erkennung eines Objektzustands;
• - Erkennung der Abwesenheit, insbesondere der ungeplanten Abwesenheit eines Objekts;
• - Erkennung der Dauer der Anwesenheit eines Objekts abhängig sein.

The action selected or to be selected can be from one of the events

• - Detection of a movement of an object, in particular detection of the direction of movement and/or the speed and/or the acceleration;
• - Recognition of the number of objects that are assigned or can be assigned in particular to a defined group of objects;
• - Detection of the size of an object;
• - detection of an object state;
• - Detection of the absence, in particular the unplanned absence of an object;
• - Detection to be dependent on the duration of the presence of an object.

A dependency on a time of day and/or a day of the week can also be decisive for the allocation to the zone or the setting of a zone. Several time periods can be combined as a group in order not to link all individual time periods individually for the events.

The events mentioned above can also be made dependent on the object type (animal, human, vehicle,...).

According to this embodiment, zones can be used to define partial areas of the monitored area or the monitored room that are monitored and actions, in particular one of the aforementioned actions, can be defined that can be carried out when an event occurs, in particular one of the aforementioned events.

• - ein Objekt/z. B. Mensch betritt, bewegt sich in einer als Sicherheitsbereich eingestuften Zone oder verlässt diese
• - die Bewegungsgeschwindigkeit eines Objekts, beispielsweise einer Person, eine Personenanzahl in einer Zone, Anzahl der Personen mit Bewegungsrichtung von Ort A nach Ort B, kann bzw. können bedeutsam sein
• - Frequentierungen bestimmter Zonen erfassbar
• - Öffnen einer Tür oder eines Fensters eines überwachten Objekts
• - fehlende Objekte: Diebstahl von z. B. Fahrzeugen, abgeholte oder neu abgestellte Paletten.

The following examples can be triggering events:

• - an object/e.g. B. A person enters, moves in or leaves a zone classified as a safety area
• - The movement speed of an object, for example a person, the number of people in a zone, the number of people moving in the direction from location A to location B, can be significant
• - Frequencies of certain zones can be detected
• - Opening a door or window of a monitored object
• - missing objects: theft of e.g. B. vehicles, picked up or newly parked pallets.

• - Alarm durch: eine Sirene oder andere Signalgeber, beispielsweise Ton- oder Lichtsignale, Push-Nachrichten, SMS-Mitteilungen, Anruf, etc.
• - Auswertungen bestimmter Ereignisse z. B. für Statistiken, insbesondere: welche Zonen oder Bereiche werden am meisten genutzt, hierbei kann die Anzeigevorrichtung die unterschiedlichen Frequentierungen der unterschiedlichen Zonen oder Bereiche durch verschiedene Einfärbungen markieren.

Examples of actions that can be triggered are in particular:

• - Alarm by: a siren or other signaling devices, e.g. sound or light signals, push messages, SMS messages, calls, etc.
• - Evaluations of certain events, e.g. B. for statistics, in particular: which zones or areas are used the most, in this case the display device can mark the different frequentations of the different zones or areas by different colors.

Another possibility can be realized that an event in a zone can "create" a new or further zone, i. H. the new or further zone does not have to be defined by the user of the device according to the invention. Rather, this zone can be set up automatically and independently by the device itself, in particular by appropriate programming. This can be, for example, a pallet that has been newly parked in a monitored zone or a newly parked vehicle that defines a new zone. Thus, the newly parked pallet can be a newly created zone that is assigned an action of monitoring the pallet and raising an alarm if it is stolen. A zone can preferably be defined according to calendar days and/or times.

A special embodiment is characterized by a first zone and a second zone, to which different priorities can be assigned. Additionally or alternatively, a partial area to be monitored or a partial space to be monitored can be assigned to at least one first and one second zone, which have different settings. In particular, at least one action and/or monitoring function that differs from the second zone is assigned to the first zone. This also allows dependencies to be defined. For example, a surveillance zone is only activated when a main gate is closed, which can mean that a company with monitored premises has to close down.

Measurement signals can preferably be emitted by the transmitting device at defined time intervals in changing directions, which can include a preferred direction range. The transmission device is preferably designed with all-round radiation, so that the horizontal portion covers in particular an angular range of 360°. In this embodiment, the received reflected signals can be transferred to display points or display areas and can be displayed in the display device in the two-dimensional image, in particular the two-dimensional floor plan, in accordance with the properties of the detected object. These object properties can be or include the position and/or the course of movement and/or the outline of the object.

In particular, the detected reflected signals can be assigned to one or more defined object groups. In this case, an object group can be transferred to an object representation for displaying the detected object in the two-dimensional image and/or can be assigned to at least one action and/or one monitoring function. With each measurement result, an attempt can be made to divide this into a defined object. For example, an algorithm of an evaluation program tries to classify recorded measurement results or objects into walls, people, animals, vehicles, pallets, etc. Environmental influences can also be helpful in the classification, for example to distinguish solid and rigid objects from flexible ones. Objects moving, for example oscillating, around a center point or a middle position can be defined as leaf movements in the wind, while a wall is generally stationary in all weathers.

According to a special embodiment, the detected reflected signal is assigned to or divided into objects that are permanently present or objects that occur from time to time. Permanent objects are part of the monitored area or the monitored space. In particular, they include the object to be monitored and/or can be assigned or can be assigned to an action and/or a monitoring function. Examples of this are the object types: door, gate, roller shutter, window, etc. Here the system can recognize whether, for example, a roller shutter or a door is open or closed, i.e. recognize a status/event of the object. An action can be linked to the state/event of the object, such as switching on a light.

On the other hand, objects that appear from time to time are particularly mobile. However, such objects that only appear occasionally can also be made the subject of a zone and/or an action or monitoring function, but this action or monitoring function usually differs from that of a permanent object. For example, when a motor vehicle is detected, a zone around the parked car can be activated and assigned an action when an event occurs.

A particular embodiment of the device according to the invention provides that each object within the measurements can be evaluated for stability using a point system or the like. The more points an object receives, for example, the more sluggish a reaction to changes in the measurement result can be. An example of this is a motor vehicle that is parked in front of a wall, with the result that the parts of the wall covered by the motor vehicle can no longer be detected by the scanning device. Despite this, the wall is still displayed in the display device. On the other hand, moved or moving objects with a lower rating, in particular a lower score, disappear from the display device, in particular from the floor plan representation, in a significantly shorter time.

According to a further embodiment, automatic object marking of different object types is provided, taking into account the stability of the measuring points or taking into account movement patterns. For example, the following object types are provided: New measurement point, measurement point that has been recognized for a long time but is not stable, wall-like measurement point, wall or very stable measurement point, hedge, human, animal, vehicle, etc.. Colors are used to identify the recognized object types, Tags, pictograms, symbols, hatching or the like are provided. For example, doors, gates and windows can be graphically displayed in the aerial photograph. In addition to the possibility of an automatic assignment of the object types, a manual assignment of the object types to the measuring points is also possible or provided according to one embodiment. Vehicles have a very distinctive shape. Likewise, pedestrians walk very differently from animals. After execution, these recorded objects are either assigned manually or automatically from a list/database of stored object types. If such a database is part of the device, objects that have already been classified are stored there. According to another variant, the device has or is connected to a neural network, so that the object association improves over time.

In principle, after a learning phase, the system recognizes walls, people, cars, animals ... independently. In addition, object types: gate, door... can also be marked manually in the 2D floor plan as a gate or door. The system would thus quickly recognize an open door. Unlike an undefined door, it would take several minutes or hours for the system to render/tag the "open door" in the 2D floor plan.

The system constantly monitors all objects. Each object is given a unique ID and is cataloged in the system. The following parameters are taken into account: object size (area), object diameter, object shape, object speed, object dwell time within the zone, object dwell time in the entire detection area, object activity / mobility (movement direction, acceleration), movement path within the detection area.

With these parameters and possibly other details, the object is also divided into an object type: wall, human, animal (large), animal (small), car, car with trailer, bicycle, stroller. These parameters can also be defined in a defined zone as a "trigger". Thus, a zone does not necessarily have to be set to "activated" if only a small object enters the zone. This setting can be made in the zone. Thus, a zone can only react to a car or an object of a certain size or shape.

According to a further embodiment, the device stores unusual objects in a history log. According to a variant of the invention, unusual routes, events or objects are also presented to the user. Here the system should independently recognize these “irregular events”.

The received reflected signals and/or their transmission to display points or display areas can preferably be assigned to a site plan or an aerial photograph of the area to be monitored or the room to be monitored. It is particularly advantageous if the site plan or the aerial photograph can be or is superimposed on the two-dimensional image. This makes it easier for the user or observer of the display device to orientate himself in the representation of the monitored area or the monitored room.

A partial area to be monitored or a partial space to be monitored, in particular the zone to which the partial area or partial space is assigned, can be definable by selecting an assigned area in the two-dimensional image on the display device. Preferably, the selection or the definition is made by a marking, in particular by a colored marking, on the display device, so that an emphasis is also achieved in this way. With the help of overlaying the floor plan with an aerial photo or a particularly detailed site plan, the The partial area to be monitored or the partial space to be monitored can be defined very precisely, in particular with a precision of one to six centimetres.

A particularly user-friendly embodiment of the device according to the invention provides that the partial area to be monitored or the partial space to be monitored, in particular the zone, can be defined with the aid of graphic editing tools via an input device. These tools can be virtual. Any known, conventional type, such as a computer mouse or an input pen, is conceivable as an input device. The input device can interact with a screen representation in the form of a virtual brush to create or grow a zone, or a virtual eraser to shrink or erase a defined or sized zone.

Provision can also be made for at least one first scanning device and one second scanning device to be included, and the display points or display areas formed from received signals from the first scanning device compared to the display points or display areas formed from received signals from the second scanning device. can be represented differently. As an alternative, a different identifier or coding, in particular color coding, is also possible. In this respect, an assignment of the display points or display areas to the respective scanning device, ie an indication of which display points or display areas were generated by which scanning device, can be seen. It is thus possible to determine, for example, which scanning device produces or has produced a specific movement track of a moving object in the display device.

In order to conceal the function of the device as a monitoring means, the scanning device can be installed in a housing which is used in an ordinary device or device, which device or device is common at the place of use but serves a different use than that of a monitoring device. Since company premises or a private living area are essential areas of application for the device according to the invention, its installation in a housing of a lamp device, in particular a path or terrace lighting device, is particularly favorable and unobtrusive.

The object mentioned in the introduction is also achieved by a method according to the features of claim 13.

This method according to the invention for monitoring areas or rooms, by which objects located on a monitored area or in a monitored room or objects entering the monitored area or in the monitored room are detected, provides that a transmitting device of a scanning device measuring signals in time-defined Emits distances in changing directions and a receiving device receives at least one reflected from a detected object signal. The transmission device emits measurement signals whose horizontal component covers a predetermined angular range, which is in particular 360°, so that all-round monitoring by the scanning device is made possible. The received reflected signals are transferred to display points or display areas and displayed in a display device in a two-dimensional image according to the characteristics of the detected object. This method according to the invention can be operated in particular with or in one of the devices described above.

The display device can be part of a data processing device with which the method according to the invention can be operated or which supports the method according to the invention. Such a data processing system is or includes in particular a computer or a computer-like device, which can also be a mobile device such as a smartphone, a tablet computer or a notebook. The display device is in particular a screen of the data processing device. In particular, objects close to the ground can be detected with the scanning device, which can have a laser scanning device.

The two-dimensional image displayed or capable of being displayed in the display device can be or can have a two-dimensional floor plan of the monitored site.

Preferably, the position and/or the course of movement of the detected object and/or its silhouette, ie its outline, is displayed.

The method according to the invention can provide that a signal received by the receiving device is assigned to an object representation or a group of objects.

Received signal data are preferably assigned to a coordinate system, in particular a Cartesian coordinate system or a polar coordinate system, or a vector data model and sent to a central processor means transferred. It is advantageous if repetitive data is only transmitted once. These measures can help ensure that the amount of data transmitted remains within manageable limits, which on the one hand cannot contribute to a cost-effective system, but on the other hand allows the measurement speed and thus better traceability of movement tracks of moving objects.

It can also be provided that signal data of the reflected signal from a first scanning device and from a second scanning device are transmitted to the central processing unit and, in order to keep the transmitted data volume as low as possible, overlapping signal data of the first and second scanning devices are only transmitted by one of these two Scanners are transferred. The scanning device which is arranged closest to the detected object or which detects a movement of the detected object more clearly is used for this purpose.

The transmitted data volume can also be kept low if objects are suppressed during transmission that only occur as a result of special environmental conditions, in particular special weather conditions or influences. In the same way, movements of an otherwise stationary object, for example a tree, which only occur as a result of the aforementioned special influences or conditions, ie in particular movements caused by the wind, are advantageously also suppressed.

The above object is also achieved by a device according to the features of claim 18.

Such a device for monitoring areas or rooms for detecting objects located on a monitored area or in a monitored room or objects entering the monitored area or in the monitored room according to the invention has at least one scanning device which has a transmitting device for sending a Measurement signal and a receiving device for receiving a reflected signal from the detected object comprises on. Measuring signals can be radiated from the transmitting device at defined time intervals in changing directions, the horizontal portion of which covers a defined angular range, which is in particular 360°. At least a first and a second scanning device are provided, which are arranged at a distance from one another and whose monitored areas or whose monitored spaces at least partially overlap. In this way, the monitoring area can be increased. In addition, if placed appropriately, a second scanning device can “see” areas that lie in a shadowed area of the first scanning device. It is also possible to detect objects from all sides with several scanning devices. In particular, objects close to the ground can be detected with the scanning device, which can have a laser scanning device. The device just shown develops in particular one of the devices described further above and/or can be operated or associated with a method according to one of the configurations shown above.

The device according to the invention can have a central processing unit to which the at least first scanning device and second scanning device are connected.

The integration into a shared network of the central processing unit and the two scanning devices is favorable.

Finally, a particularly preferred embodiment of the invention provides that the first and the second scanning device can be aligned with one another. For this purpose, an automatically running alignment mode is preferably used. The alignment of the two scanning devices with respect to each other takes place in particular by scanning a common reference point or reference object by each of the two scanning devices. An object that is cross-shaped in horizontal cross-section or generally a reference object with straight surfaces and a 90-degree angle has proven to be advantageous, with the help of which several scanning devices/lasers, which “see” the cross, can be aligned very easily. This is done automatically with the help of an algorithm or can be done manually. Additionally or alternatively, the two scanning devices can be aligned with one another by mutual scanning. The reference object preferably also has markings that can be easily recognized from the air. According to one embodiment, the reference object has a circle that is visible from a bird's-eye view, that is, formed in the horizontal plane, with a cross in it. An aerial photograph of the area to be monitored can then be automatically or manually overlaid with the values from the scanning device(s) using an algorithm.

The location of the scanning device in the 2D floor plan is preferably represented by a symbol, for example by a circle. The temperature and a time stamp of the last feedback are more preferably also displayed with the symbol. It is preferably possible to display the measured values of the individual scanning device(s) in the X and Y direction to move and rotate. So that a manual correction is possible. The measurement results are preferably displayed in a different color or a different pattern depending on the respective scanning device. If you do without an automatic setting and choose manual alignment, you only have to adjust the X and Y position of the scanning device/laser according to the position on the aerial photo. All changes are made in real time. Thus, the floor plan changes immediately. It is even easier if a reference object is used as described above. Then you only have to correct the X and Y position of the scanning devices/lasers to such an extent that the measuring points of the respective scanning devices (e.g. different colors) are exactly on the reference object.

The features described and other features are in particular also the subject matter of the appended patent claims. Furthermore, it is pointed out that all features that are presented as device features in connection with one of the devices described should also be understood as process features in connection with a method that can be used in the respective device. The same applies to process features that can also be associated as device features with one of the devices described.

• 1 eine Prinzipdarstellung eines rotierenden Laserscanners in der Seitenansicht;
• 2 eine praktische Ausführungsform des Laserscanner gemäß 1 installiert an seinem Einsatzort;
• 3 eine Überwachungsvorrichtung mit zwei voneinander beabstandeten Laserscannern gemäß 2 an ihrem Einsatzort;
• 4 eine Bildschirmdarstellung eines überwachten Geländes gemäß einer Luftbildaufnahme;
• 5 die Bildschirmdarstellung ähnlich zu 4 mit einem ersten Auswahlfenster;
• 6 die Bildschirmdarstellung gemäß 5 mit einem zweiten Auswahlfenster;
• 7 die Bildschirmdarstellung gemäß 4 mit gekennzeichneten ausgewählten zu überwachenden Zonen;
• 8 eine Displaydarstellung auf einem Smartphone mit angezeigter Bewegungsspur;
• 9 eine Prinzip-Darstellung zur Programmierbarkeit einer ersten Aktion; und
• 10 eine Prinzip-Darstellung zur Programmierbarkeit einer zweiten Aktion.

The invention is explained in more detail below with reference to the drawings of an exemplary embodiment. show:

• 1 a schematic representation of a rotating laser scanner in the side view;
• 2 according to a practical embodiment of the laser scanner 1 installed at its place of use;
• 3 according to a monitoring device with two spaced apart laser scanners 2 at their place of work;
• 4 a screen representation of a monitored site according to an aerial photograph;
• 5 the screen display similar to 4 with a first selection window;
• 6 according to the screen display 5 with a second selection window;
• 7 according to the screen display 4 marked selected zones to be monitored;
• 8th a display on a smartphone with a movement track displayed;
• 9 a principle representation of the programmability of a first action; and
• 10 a principle representation of the programmability of a second action.

1 shows a basic representation of a laser scanner 1, which serves as a scanning device part of an object protection device. With the help of this object protection device, it is possible to monitor a site, for example a business site of a company or a private site, possibly with a residential building with a surrounding garden.

The laser scanner 1 according to 1 is a 360° scanner which, as indicated at 3, can be rotated about its vertical rotating base 5. In order to achieve particularly frequent scanning for detecting faster movements of an object on the monitored area, the laser scanner 1 runs through a full circle several times per minute. During its rotary movement, a laser transmitter 7, which rests on a platform 9 that is rotated along with it, emits a measurement signal 11 in a radial, horizontal direction at discrete time intervals in the horizontal direction into the monitored area. If the emitted measurement signal hits an object in the area, the measurement signal is at least partially reflected and thus forms a reflected signal which, after a corresponding transit time, reaches the laser scanner 1 running in the opposite direction to the measurement signal. This signal propagation time depends on the distance of the detected object from the laser scanner 1. In addition, the direction of the transmitted measurement signal can be detected with the help of angle sensors, not shown, so that the position of the detected object can be determined with known parameters of direction and transit time. A receiving means, for example an infrared sensor 13, is arranged on the rotating platform 9 to detect the reflected signal.

So that according to the schematic diagram 1 The laser scanner 1 shown is protected from environmental influences on the one hand and is not conspicuous in the monitored area on the other hand, in order to work covertly, for example, the laser scanner 1 is installed in a housing for path lighting 15 close to the ground, which can also be used as patio lighting. This path lighting 15 is in accordance with 2 installed on the edge of a path 17 belonging to the monitored area. The path lighting 15 therefore has the additional task of providing a housing and a concealed working environment for the laser scanner 1 in addition to its usual task, namely to ensure at least sufficient lighting conditions on the path 17 at dark times of the day. The transparent or semi-transparent window 19 of the path lighting 15 used for light emission is particularly suitable for the unhindered transmission of the measurement signals and reception of the reflected signals not. The path lighting 15 or the laser scanner 1 built into it has a heater (not shown) to ensure proper functioning even in the winter months by operating temperatures that remain approximately the same or are at least not too low, for example to prevent the window 19 from fogging up. A cover 21 prevents solar radiation, dust formation and water droplets, which could possibly falsify measurement results. In addition to a suitable seal, a drip guard (not shown) with a drip edge, which can be attached circumferentially and downwards, for example, on the edge of the circular cover, also prevents water running into the middle of the cover with the risk of penetrating into the interior of the path lighting 15. This also effectively prevents water stains on the laser's optics. Finally, the cover 21 also includes a surface that has a structure similar to a solar cell and is therefore similar to that of a solar panel, which means that another measure is taken to prevent the function of the path lighting 15 as a mount for a laser scanner 1 from being recognized.

3 shows the path lighting 15 at a different location on the same site as in 2 . In order to obtain a larger monitoring area and in particular also to be able to also monitor a covered area of the curved path 17 for a first laser scanner 1 integrated in a first path lighting 15, a second laser scanner 1 integrated in a second path lighting 15' is at a distance from the first path lighting 15 installed. 3 shows the monitored area at a darker evening or at night, when the path lights 15, 15' fulfill their additional task of providing light. In addition, shows 3 motor vehicles 23 parked on the site to be monitored, which can also be targets of the surveillance, and any unauthorized removal of a motor vehicle 23 can, for example, lead to an alarm signal.

Once again 3 can also be seen, not only are measurement signals sent in all directions of a 360° rotation, 360° LED lighting is also provided. In addition, this LED lighting can also be used to display status displays of a control and processing unit of the laser scanner 1, such as starting or booting, connection display, alarm signals, etc. Each of the two laser scanners 1 integrated in the path lights 15, 15' has such a control and processing unit. These are not only connected to each other via a wireless network, but also to a central processing unit for the purpose of data exchange. For this purpose, the path lights have a unique hardware ID, a unique IP address in the network and, if necessary, parameters to get the scale for different device types on the same level. In general, of course, a wired network structure is also possible, but it is much more complex due to concealed cable routing. The central processing unit receives the signal data transmitted by the two (or more) laser scanners 1 and evaluates the information received with regard to detected objects in the monitored area.

In order to keep the amount of data to be transmitted as small as possible, the lasers only send signal data that is repeated within a defined period of time. Overlapping signal data from a number of laser scanners 1, which scan the same object, for example, but possibly from two different directions, are also calculated out before transmission and are therefore not transmitted. Only the signal information from the laser scanner 1 that is closest to the detected object is advantageously used here. Alternatively, possibly also cumulatively, the laser scanner 1 can also be used for the transmission, which best recognizes this movement in the event of a movement of the detected object. In order to be able to ensure the transmission of only the most suitable signal in each case, the control and processing units of the two laser scanners 1 are connected to one another by means of appropriate evaluation software.

According to the laser scanners 1 3 It is a matter of monitoring devices with scanning close to the ground, since these laser scanners 1 are installed in path lighting 15, 15' close to the ground. In addition, there is only one scan in the horizontal direction, so it is only scanned over an area. However, this is sufficient, since in this way those intruders who can be critical for the terrain or objects on it are detected.

4 shows a screen display of a monitored area, in the present example a residential and garden property with a residential building 25, in a plan view. The property is displayed on the screen 27 with the help of an aerial photograph, for example created by a controlled flying object, preferably a drone. Instead of the aerial photograph, a construction plan drawing or a cadastral representation can also be used, but an aerial photograph is usually more up-to-date and more realistic. A garage 29 adjoining the residential building 25 and motor vehicles 23 parked at the residential building can also be seen in the aerial photograph.

Monitoring zones can now be set up with the aid of the control and computing unit belonging to the screen 27, preferably a computer (not shown). In the example according to 4 a property boundary in the form of a fence 31 was marked by the user or the person setting up the monitoring system. An unauthorized overcoming of this fence 31 can possibly be an alarm-triggering event. Furthermore, a door 33 and two windows 35, which point to a terrace 37, are marked as possible entry openings into the residential building 25 and, in particular, are defined as zones.

Instead of the aforementioned objects or zones 31-35 being marked by the user, these objects can also be the result of scanning by at least one laser scanner 1 and subsequent assessment or assignment by the associated control and processing unit or the central computer or computer.

5 shows the screen display analogous to 4 with the same monitored premises.. Those with this one 5 The screen settings shown also have a selection window 39 for setting up an additional scanning device, ie a further laser scanner 1 . A selection field 41 present in the selection window 39 can be used, for example, to set a color assigned to this laser scanner 1, with which the area that can be detected by this device 1, in particular its border 43, is identified in a color-coded manner. In addition, with the help of the "Position x/y" selection field, the location of the scanning direction can be adjusted and, for example, moved to the location of the scanning direction that can be seen in the photo. Preferably, the position correlating with the sampled values, which can be shifted with the help of the selection field, is identified by a point, for example, so that this point can be shifted over the location recognizable on the photo. With the help of the "Alignment (degrees)" selection field, the scanned values of the scanning device can be rotated around the location of the scanning device in such a way that the displayed markings (e.g. house corner or the reference object mentioned above) lie on the corresponding positions recognizable in the photo. With the help of the "Scale" selection field it can also be ensured that the displayed positions measured by the scanning device have the same scale as the photo.

With 6 shows another step in the setup process of the surveillance system. In this case 6 same view of the terrain as 5 , but with a next selection window 39' for the definition of a zone 45. In the example shown, a color coding for the zone 45 to be defined was initially set by means of a selection field 41' of this selection window 39'. Then, with the help of virtual drawing tools known from standard programs such as Microsoft ^® Paint, for example a virtual brush, which can be controlled with the pointer of the PC mouse and can preferably be adjusted to different sizes, that area was entered in the floor plan representation that represented the area of the zone should represent. A further selection field 41'' makes it possible to give the zone 45 a name. Zones that have already been defined can preferably be changed, for example the size can be changed, which can be made possible by a virtual eraser.

Also with 7 the view of the area to be monitored is reproduced, but again with the zoom setting according to 4 . In addition to the fence 31 described above, several marked and thus defined zones 45a-45e can be seen, which are scanned by several laser scanners 1 and to which actions or monitoring functions not described further here are assigned.

Finally is still with 8th the view of a display 47 of a smartphone provided for monitoring and possibly for receiving an alarm. Before or during the display according to the display 8th has there been or is movement of an unspecified object, possibly an inhabitant or a welcome or unwanted visitor to the premises, which movement is indicated at 49 by means of a movement trace in the form of a comet tail display. Here, the darkest track point represents the current position of the moving object and earlier positions already left behind in the course of the movement gradually fade. Based on the information obtained with this display representation, the viewer can now decide whether there is an alarm condition and whether an action must be triggered.

9 a principle representation of the programmability of a first action, in which the light in the entrance area of a house is switched on. First, the operator selects or creates a specific action, here the “Lights on” action. He has the possibility to activate or deactivate the status of this action and to determine the name of the action. This is followed by a combination of conditions using Boolean operators that determine when a specific action should be performed. In this case, switch on the light in the entrance area. As shown here, when the zone value is On gear range” is 1 and if the last update was more than 5 seconds ago.

10 shows the definition of an additional action, namely the action "Alarm 1". The action triggers the alarm, emergency call device under the condition that the value of the "Alarm zone" zone is 1. However, the alarm is only active between 11:00 p.m. and 4:00 a.m.

In the 9 and 10 The zones mentioned "entrance area" and "alarm zone" were previously marked/defined on the screen with the help of a virtual brush.

Reference List

1

laser scanner

3

rotation arrow

5

swivel base

7

laser transmitter

9

platform

11

measurement signal

13

infrared sensor

15,15'

path lighting

17

path

19

window

21

cover

23

motor vehicle

25

residential house

27

Screen

29

garage

31

fence

33

door

35

window

37

terrace

39, 39'

selection window

41, 41', 41''

selection box

43

border

45, 45a-45e

zones

47

screen

49

movement track

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• EP 0029827 B1 [0003]

Claims (20)

Device for monitoring areas or rooms for detecting objects located on a monitored area or in a monitored room or objects entering the monitored area or room, in particular objects close to the ground, with at least one scanning device which has a transmitting device (7) for sending measurement signals and a receiving device (13) for receiving signals reflected from the detected object, the scanning device having in particular a laser scanning device (1), the monitored area or the monitored space being displayed in a display device (27, 47), in particular on a screen, a data processing system, in particular a computer or a computer-like device, can be displayed in a two-dimensional image, in particular a two-dimensional floor plan, and with the aid of the data processing system a partial area (45, 45a-45e) of the monitored area or a partial space of the monitored room can be selected, to which a predefined action and/or a predefined monitoring function can be assigned, wherein the action and/or the monitoring function can be selected in particular from a predefined configuration menu. setup after claim 1 , characterized in that at least one object to be monitored is arranged on the monitored area or in the monitored space, which object can be displayed or is displayed in the two-dimensional image in the display device (27, 47), in particular true to scale. setup after claim 1 or 2 , characterized in that the selected partial area (45, 45a-45e) to be monitored or the selected partial space to be monitored, or in particular the object to be monitored, can be assigned to a zone (45, 45a-45e) by which at least one of the actions - alarm by associated devices or facilities; - activation or deactivation of at least one further zone (45, 45a-45e); - Alarm for a detected object, especially an object in an unusual condition or in an unusual location; - display of the dwell time of an object by means of a characteristic representation, in particular a colored representation, in particular as a function of one of the events - detection of a movement of an object, in particular detection of the direction of movement and/or the speed and/or the acceleration; - Recognition of the number of objects that are assigned or can be assigned in particular to a defined group of objects; - Detection of the size of an object; - detection of an object state; - Detection of the absence, in particular the unplanned absence of an object; - Detection of the duration of the presence of an object; can be triggered, the assignment to the zone (45, 45a-45e) or the setting of a zone (45, 45a-45e) being dependent in particular on a time of day and/or a day of the week. setup after claim 3 , characterized in that a first zone (45, 45a-45e) and a second zone (45, 45a-45e) can be assigned different priorities and/or that a partial area to be monitored or a partial space to be monitored is assigned to at least one first and one second zone (45, 45a-45e) can be assigned, which first and second zone (45, 45a-45e) have different settings, in particular different actions and/or monitoring functions are assigned. Setup according to one of Claims 1 until 4 , characterized in that the transmitter device (7) can emit measurement signals at defined time intervals in changing directions, the horizontal component of which covers in particular an angular range of 360°, the received reflected signals being transferrable to display points or display areas and displayed in the display device (27 , 47) can be displayed in the two-dimensional image, in particular the two-dimensional floor plan, according to the properties of the detected object, in particular its position and/or its course of movement and/or its outline. setup after claim 5 , characterized in that the detected reflected signals can be assigned to one or more defined groups of objects, wherein in particular one group of objects - can be transferred to an object representation for displaying the detected object in the two-dimensional image and/or - can be assigned to at least one action and/or one monitoring function . setup after claim 6 , characterized by an assignment a. in permanent objects (25, 29, 33, 35, 37), which are part of the monitored area or the monitored room and which in particular - include the object to be monitored and/or - are assigned or can be assigned to an action and/or a monitoring function, or b. in objects (23) that occur at times, in particular moving objects. Setup according to one of Claims 5 until 7 , characterized in that the received reflected signals and/or the display points or display areas can be assigned to a site plan or an aerial photograph of the monitored area or of the monitored space, wherein in particular the site plan or the aerial photograph can be superimposed on the two-dimensional image. Setup according to one of Claims 1 until 8th , characterized in that a partial area (45, 45a-45e) to be monitored or a partial space to be monitored, in particular the zone, by selecting an assigned area in the two-dimensional image, preferably by a marking, in particular by a colored marking, on the display device (27, 47) can be defined. setup after claim 9 , characterized in that the partial area (45, 45a-45e) to be monitored or the partial space to be monitored, in particular the zone, can be defined with the aid of graphics processing, in particular virtual, aids via an input device, in particular a computer mouse. Setup according to one of Claims 1 until 10 , characterized in that at least a first scanning device (1) and a second scanning device (1) are included and the display points or display areas formed from received signals of the first scanning device (1) are compared to the display points or display areas formed from received signals of the second scanning device (1) are formed, can be represented differently or have a different identifier or coding, in particular color coding. Setup according to one of Claims 1 until 11 , characterized in that the scanning device (1) is installed in a housing which is usually used at the site of use other than a monitoring device, preferably in a housing of a lamp device, in particular a path or patio lighting device (15, 15'). Method for monitoring areas or rooms, by which objects located on a monitored area or in a monitored room or objects entering the monitored area or the monitored room are detected, in particular executable in a device according to one of Claims 1 until 12 , wherein a transmitting device (7) of a scanning device, which has in particular a laser scanning device (1), emits measurement signals at defined time intervals in changing directions and a receiving device (13) receives at least one signal reflected by a detected object, wherein the transmitting device (7 ) Emits measurement signals, the horizontal component of which covers an angular range of in particular 360°, and the received reflected signals are transmitted to display points or display areas and in a display device, in particular on a screen (27, 47), in a two-dimensional image, in particular a two-dimensional floor plan , are displayed according to the properties of the detected object, in particular its position and/or its course of movement and/or its outline. procedure after Claim 13 , characterized in that a signal received by the receiving device (13) is assigned to an object representation or a group of objects. procedure after Claim 13 or 14 , characterized in that received signal data are assigned to a coordinate system, in particular a Cartesian coordinate system or a polar coordinate system, or a vector data model and transmitted to a central processing unit, with preferably repeated data being transmitted only once. procedure after claim 15 , characterized in that signal data of the reflected signal from a first scanning device (1) and from a second scanning device (1) are transmitted to the central processing unit, with overlapping signal data of the first and second scanning devices (1) only being transmitted by one of the first and second scanning devices (1), in particular by the scanning device (1) arranged closest to the detected object or by the scanning device (1) which detects a movement of the detected object more clearly. Procedure according to one of Claims 13 until 16 , characterized in that the occurrence and/or movements of an object caused by an environmental influence, in particular a weather influence, are suppressed during the transmission. Device for monitoring areas or rooms for detecting objects located on a monitored area or in a monitored room or objects entering the monitored area or room, in particular objects close to the ground, with at least one scanning device which has a transmitter device (7) for transmitting a measurement signal and a receiving device (13) for receiving a signal reflected by the detected object, the scanning device having in particular a laser scanning device (1), the transmitting device (7) transmitting measurement signals at defined time intervals into changing Directions can be emitted, the horizontal portion of which in particular covers an angular range of 360°, the device in particular according to one of Claims 1 until 12 formed and / or with a method according to one of Claims 13 until 17 is operable, and wherein at least a first and a second scanning device (1) are provided, which are arranged at a distance from each other and whose monitored areas or whose monitored spaces at least partially overlap. setup after Claim 18 , characterized in that a central processing unit is included, with which the at least first scanning device (1) and second scanning device (1), in particular via a network, are connected. setup after Claim 18 or 19 , characterized in that the first and the second scanning device (1) can be aligned with one another, preferably by an independently running alignment mode, in particular by respective scanning of a common reference point or reference object and/or by mutual scanning.

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