Backaround of the Invention

[001] The present invention concerns a three-dimensional detection system and method of its detection.

State of the art

[002] Three-dimensional detection systems detect an intruder in a delimited secured area. Required detection is ensured by use of different technologies, for example PIR detectors, i.e. “Passive Infrared Detectors", microwave barriers, radio systems, systems based on a LiDAR technology, or camera systems, which works on detection process based on pictures.

[003] For verification of functionality of the system it is necessary to perform a physical test, so called a penetration test, It is a test, where an object of required dimensions and of required speed invades into a secured area. After the infiltration alarm is announced or not. Thanks to the test a correct functionality and setting of the system is evaluated.

[004] However, the physical tests are time consuming and very expensive. It is difficult to repeat it very often, for example daily. Furthermore, a person used for the test is not suitable to perform all possible variants of the attacks. The tests are not possible to be performed in a secured mode, so a possible intruder can get information about the tested detection system. In the most cases, the penetration test leads to shut the security system down. It is very difficult to use the penetration tests for verification of the security systems with regards to alarms caused by detection of small animals, e.g. cat, dog, or flying birds. It is also very difficult to perform the penetration tests during worsened weather conditions, e.g. fog, snowfall, or rain, when the result differs from optimal weather conditions.

[005] Aim of the invention is to present a three-dimensional detection system and method of its detection, which is able to eliminate the above mentioned disadvantages.

Feature of the Invention

The above mentioned disadvantages are considerably eliminated by use of a three-dimensional detection system comprises a detector 1, an interface 2, an evaluation server 3 and a client station 4, where the detector 1 is designed for transmitting and receiving laser pulses to/from an area of interest, and interconnected with the interface 2, the interface 2 is designed for processing information about reflections of laser pulses recorded by the detector 1, and for transmitting the information to the evaluation server 3, and interconnected with the evaluation server 3, the evaluation server 3 is designed for evaluation of presence of an object in an area of interest based on information about reflection of laser pulses, and interconnected with the client station 4, where the client station 4 is designed for depicturing the results of the evaluation, where the client station 4 comprises a simulation software, Which is intended to create a virtual object defined by three- dimensional coordinates, which is taken by the evaluation server 3 as a real object possibly detected by the detector 1 in the area of interest.

The above mentioned disadvantages are considerably eliminated also by use of detection method of the three-dimensional detection system according to the claim, where the virtual object defined by three-dimensional coordinates is created by the simulation software, the information about the virtual object is transmitted to the evaluation server 3, the information about the virtual object is used for evaluation of presence of the object in the area of interest, and considered as a real object placed in the area of interest, and presence of the object in the area of interest is evaluated. The above mentioned disadvantages are considerably eliminated also by use of a memory device comprises the simulation software, which is ensured to perform the detection method according to the claim.

[006] The invention will be further explained by using the drawings, where Fig. 1 presents the three-dimensional detection system with a virtual test according to the invention and Fig. 2 presents use of the three-dimensional detection system with a virtual test according to the invention.

Preferred Embodiments of the Invention

[007] A three-dimensional detection system with a virtual test according to the invention presented on Fig. 1 comprises:

- a detector 1 , an interface 2, an evaluation server 3 and a client station 4, where: - the detector 1 is designed for monitoring of an area of interest, and interconnected by the interface 2 with the evaluation server 3,

- the interface 2 is designed for processing of reflections of laser pulses recorded by the detector 1,

- the evaluation server 3 is designed for depicturing of results, which are intended to process detection algorithms received from the detector 1 , and interconnected with the client station 4,

- the client station 4 comprises an installed simulation software, which is intended to create a virtual intruder and for transmitting information about the virtual intruder into the evaluation server 3, where the information is combined with information received from the detector 1 , later on the information is evaluated and then the result is transmitted to the client station 4. The virtual intruder, virtually created in the client's part of the software, asks the evaluation server 3, whether the real beams of the detector 1 are able to reach the group of points, which represents the inner volume of the tested object, i.e. the intruder. The result of the tests is visualized in the client's part of the software and creates real alarm on the evaluation server 3.

[008] The client station 4 and the evaluation server 3 are parts of a local network 5.

[009] Advantageously, the detector 1 is a detector based on the technology LiDAR, i.e. _« Light Detector and Ranging". It is a measuring method of a radiation time of pulses of laser beams reflected from a detected object Because of the technology a coordinates of all reflected beams are known in a real time. By use of the multichannel LiDAR detectors the system is able to obtain information about the actual state of the monitored area.

[0010]The above mentioned software can be recorder on any suitable memory device.

[0011] A detection method of the detection system according to the invention comprises the following steps:

- a virtual object defined by three-dimensional coordinates is created by the simulation software,

- the information about the virtual object is transmitted to the evaluation server 3, - the information about the virtual object is used for evaluation of presence of the object in the area of interest, and considered as a possible real object placed in the area of interest, and

- possible presence of the object in the area of interest is evaluated.

[0012] The detection system according to the invention, so called V1RD, i.e. _« Virtual Intruder in Real-time Detection", ensures performance of a real test by user of the system. The user is able to create a test by movement of a 3D object of a virtual intruder in a 3D scene, which is the monitored zone. The virtual intruder has the same size as a real object and moves by the same speed and by the same way as a real object. The Fig, 2 presents the above mentioned test, where a confirmed alarm is invoked. The system is learnt to detect a real intruder of the same size on the defined spot of the scene.

[0013] Movement of the virtual intruder is stored. The user has knowledge about a trajectory of the movement of the virtual intruder, so it is possible to define places in the trail of the movement, which should be tested for positive or negative detection.

[0014]The system according to the invention allows start of the virtual tests on the background of a security application, so it is not necessary to switch the software/application to un-secured mode. The test is possible to be performed many times per day, and manually or automatically. The results of the tests will be archived, so in case of malfunction of the required test a user of the system will be informed.

[0015] When the test is running a real impact of the detecting beams of the LiDAR detector in a real scene with regards to the position of the virtual intruder is checked. The virtual intruder is a group of points defined by x, y and z coordinates, which is easy to be defined in the three-dimensional scene, as well as exact impact of a real time detecting beams of the LiDAR detector.

[0016] The system tests setting of a security system in a real time. Announcement or ignoring of alarm is influenced by the same setting as in case of a real intruder. There is not difference, if the test is performed by use of a real intruder or a by a virtual one. The result must be the same. The real and the virtual intruder has to have the same size, i.e. the same volume.

[0017]The system according to the invention possibly presents any kind of 3D objects, e.g. humans, animals, cars, flora, a flying drone, birds and so on. Those 3D objects copy movement of corresponding real objects, e.g. walk, run, crawling, flying, riding and so on. Furthermore, any weather conditions are possible to be simulated, e.g. fog, rain, snowfall or sand storm.

tf)018JAn advantage of the system according to the invention is a performance of tests, which are very difficult to be performed in a real conditions. The required test is possible to be performed many times per day and able to verify a real setting of the system and reliability of the whole system with regards to the current setting of the security system. The results of any performed tests can differ, according to actual state of each detector, because the detector can be blocked by hindrance, or influenced by weather conditions, e.g. fog, rain, snowfall, dirt on the detector, displacement of the detector, covering of the detector, and so on.

[0019] The result of the performed test depends on functionality or non-functionality of a security system at any moment. Periodical repetition of the test prevents of presence of _" false negative" situations, when an intruder is not detected in a real time. Furthermore, the test can check the whole security system with respect to„false positive" situations, during which a security system announces a false alarm at a real time.

[0020] The tests are possibly to be prepared in advance and possibly comprise attempts of virtual intruders to climb over a fence or crawling to a secured zone. The attacks can be performed at one moment in a different places. Furthermore, the system can be tested for pay no attention to false alarms caused by movement of small animals, e.g. flying birds. Even more, sufficient sensibility can be tested, for example when presence of fog is simulated.

[0021] In advance the whole system according to the invention can be modified to generate penetration tests itself to find out weak places of the security system. Thanks to that, gained information can helps to improve the whole system. The tests should correspond to the same tests performed in a real time. Another advantage of the system according to the invention is, that expenses are dramatically reduced in comparison to real tests performed by a security system according to the state of the art. Possible use of the system find place in such situations, where physical tests in a real nature is not possible to be performed.