HU222325B1 - Method and system for finding the position of staying and/or moving objects and for tracking them - Google Patents

Abstract

The invention is a method suitable for determining, approaching and detecting the position of stationary and/or moving objects, as well as the system implementing the method. According to the invention, the position of the desired object (1) is continuously determined in a control center (4, 5) using the signals of a low-power transmitter (2) hidden in the desired object (1) and a location-related radio frequency direction finding network, and then the search object designated by the center (4, 5) The actual location of the searched object (1) is determined with the help of the center (4, 5) by extrapolating the value of the difference between the exact position determined by satellite positioning (6) and the position of the search object (6) determined by ground bearing. By coding the signals of the low-power transmitters (2), the simultaneous detection of several wanted objects (1) becomes possible. The number of simultaneously detectable searched objects (1) can be increased, but the number of search objects (6) sets a limit to the number of simultaneously tracked and detectable objects (1). ŕ

Description

The scope of the description is 10 pages (including 5 pages)

EN 222 325 Β1

The present invention relates to a method for determining and approaching the position of stationary and / or moving objects, the method comprising: receiving a stationary station and / or a moving transmitter in a desired object, preferably a radio frequency transmitter signaling station receiver, determining the position of the object to be searched, and controlling a sub-center. (s) transmit the measured data. The invention is also a system for determining and approaching the position of stationary and / or moving objects, wherein the controlling (sub) center (s) have directional signaling stations in a closed communication chain, and a stationary signaling station, preferably a radio-frequency transmitter. and / or are suitable for determining the position of the movable search object (s) in a direction, while the low-power encoded signals, preferably encoded radio frequency signals, suitable for identifying the particular search object hidden in the object (s) being sought are).

As is known, equipment related to the protection of movable objects against theft can be divided into two large groups. One group includes anti-theft devices, while the other group includes equipment for detecting and recovering the status of already stolen objects. The function of the devices belonging to the former group is usually that the object gives an alarm signal (light, sound, radio frequency (RF), etc.), which is detected directly or indirectly by the search objects, and that they will be detected and attempted by an unlawful possession attempt. This allows you to determine, approach and recover the position of the object you are looking for. However, these devices are usually inaccurate because, for example, if they are set to too high a sensitivity, they often result in false alarms, alarm signals often cannot be identified, disturbed, etc. The other group of alarm solutions are used when objects have already been moved from their original position, so their location must first be determined and then approached and retrieved according to the circumstances, following their possible movement.

One of the most typical and most frequent cases of the second group is the recovery of stolen vehicles. The alarm is triggered by a connection between the transmitter mounted in the vehicle and the receiver at a central monitoring station. Such a solution is described, for example, in DE 28 40 136 A1. However, in most cases this solution is unsatisfactory because it is no longer able to track the further movement of the vehicle, while the operation of the tax in the case of stationary equipment can be eliminated by interrupting the power supply.

It is also known to have used the location of the transmitters to measure the location of the transmitters, namely, to measure the direction of the position of the transmitter in the vehicle from at least three locations, and the transmitter, i.e. the vehicle, is located at the intersection of the three directions. Such a solution is described, for example, in HU P

03628, in which one embodiment of the protected object transceiver is associated with a satellite in a satellite tracking system (GPS). As is known, GPS can be used to determine the location of a searchable object where it can be placed with great accuracy.

Although the solution described in HU P 93 03628 is suitable for tracking the further movement of an already stolen vehicle, a conventional radio frequency transmitter must be placed next to the GPS receiver in the protected object, so the size of the transceiver can be reduced only to a limited extent, and its performance cannot normally be increased. to the extent necessary, and the secrecy of most of the objects to be protected cannot be solved. Otherwise, the use of GPS is limited because it is necessary for the GPS receiver of the protected object to "see" the satellite.

The object of the invention is to overcome the above-mentioned drawbacks and to create a system suitable for alarm, positioning and approach, which is also suitable for detecting the position of very small objects, which can be concealed, as well as for the simultaneous determination and approach of the position of several objects.

The invention is based on the recognition that, on the one hand, the traces of tracing needed to be traced to the objects sought before being stolen, and therefore the use of low power transmitters, which are very small in space, is possible, and that high-performance transceiver equipment is necessary for the accuracy of positioning. to simultaneously meet the demand of the two, if the position of the low-end transmitter hidden in the target object is continuously determined by a radio-frequency directional network in a control center, and then the exact position of the search object assigned by the control panel by satellite positioning and search object ground the center is determined by the value of the difference between the measured values of the position determined by the direction measurement and the target ectum's actual location. We have also discovered that coding the signals of low power transmitters will make it possible to detect multiple searched objects simultaneously. However, the number of searchable objects that can be detected simultaneously can be increased, but the number of search objects limits the number of objects that can be tracked simultaneously or discoverable.

The essence of the method according to the invention is that the positioning data of the search object (s) with the satellite positioning unit are sent to the control center (s) via the communication channel (s), and then the requested (sub) center (s) to detect and identify the position of the search object (s) going to the object (s) by means of terrestrial direction measurement, preferably a high-power transmitter capable of emitting radio frequency signals, and after processing these signals in the (sub) center (s), the search object ( ok) we compare the location coordinates of satellite and terrestrial measurements, and finally the difference is extrapo2

EN 222 325 B1

You specify the current location of the object (s) you are looking for.

The system according to the invention is that the control (sub) center (s) has (are) standing and / or moving search objects in a two-way relationship, while the search objects are equipped with a satellite positioning unit for determining exact location coordinates and a high-performance code identifier for ground positioning. transmitter, preferably a radio frequency transmitter.

The invention is illustrated in more detail by means of the examples shown in the drawings, in which: Figure 1 is a block diagram of an embodiment of the system according to the invention, while Figure 2 is a block diagram of a hidden transmitter of the object being searched.

The system according to the embodiment illustrated in Figure 1 is designed to determine the position of the stolen and unduly possessed 1 sought-after objects, such as motor vehicles, and recover after an approach. The transmitters 1, which are covertly located in the searched objects 1, are appropriately coded to identify the searched object 1, preferably radio frequency 2. These radio frequency 2 transmitters are very small and therefore operate at very low power. In addition, the system has sensitive pointing stations 3 for receiving the signals of the searched objects arranged in a directional network, which are arranged so that at least three of the three direction-finding stations in the area monitored by the system are capable of receiving the object 1 from the signal of the transmitters 2 direction. The metrics 3 with the system control center 4, or if the system covers a larger area, such as a nationwide system, are divided into several sub-divisions by subarray 5 sub-centers carrying out some of the functions of the control panel in communication channels, preferably radio frequency communication channels. The control panel 4 and the PBXs 5 are also connected to mobile, stationary and / or moving search objects 6 for accessing the searched objects 1 via communication channels, preferably via radio frequency communication channels. The search objects 6, such as motor vehicles, are equipped with a satellite positioning unit (GPS) 7 for determining their exact location coordinates.

Figure 2 shows an exemplary embodiment of the control panel 4. The data set received from the 3 directional stations and the 6 search objects connected directly to the control panel 4 or via the 5 PBXs is transferred to a computer 9 for processing, recording and displaying via the 9 communication MODEMs. 9 computers with 10 criminal databases and 11 units to communicate with 6 search objects.

Referring to the arrangement shown in FIG. 3, the transmitter 1 in the sought-after object 1 is placed in a secrecy unit 15 together with a detector 12 associated with it, a code generation and modulating unit 13, and a power supply unit 14.

Figure 4 illustrates an exemplary direction indicator station 3. The directional antenna group 16 of the direction indicator station 3 is connected via an antenna switching unit to a radio frequency receiver 18 and a code recognition unit, which receiver and code recognition unit 19 are connected to the sub-exchange 5 of the area via the internal computer 19, while the internal computer 19 is connected to the sub-exchange 5 of the area. center.

In the search object 6 of FIG. 5 (e.g., a police car), the satellite positioning unit 7 is connected to MODEM II and has a high frequency transmitter 22 with a code identifier and a radio frequency transmitter 23. Advantageously, the search object 6 also includes a manual direction indicator 24, preferably a handwheel 24 that speaks.

The system according to the invention can be operated by the method according to the invention as follows:

When an object is moved from an unknown position to an unknown location, such as a vehicle being stolen, that object 1 becomes a searched object. The stealth detecting unit 12 hidden in the concealment unit 15 activates the power supply unit 14 to initiate the code generation and modulating unit 13 and the radio frequency transmitter 2. (The system may operate on other frequencies, but the easiest way to use the radio frequency is to use radio frequency communication). Therefore, due to the hidden placement, the low power transmitter 2 is adapted to emit encoded radio frequency signals suitable for identifying the particular search object 1. Therefore, responsive receivers are required to receive signals and, accordingly, at least roughly determine the direction.

EN 222 325 Β1

For this purpose, a network of 3 pointing stations covering the entire area of the area must be installed in the area, so that the direction of the searched object 1 at any point of the area can be measured by at least three 3 direction measuring stations. The direction-measuring stations 3 thus detect the code-modulated radio frequency signal, and the measured direction and identification code data are generated by the directional antenna group 16, the antenna switching unit 17, the radio frequency receiver 18 and the code 19, and on the MODEM I 20. it is sent continuously to the 4 centers. For the sake of simplicity, the example will be described with reference to a single contiguous area, i.e. a single center 4. Division into multiple divisions, division of tasks between the 4 centers and the 5 PBXs does not affect the essence of the invention.

In the control panel 4, the location of the searched object 1 is determined by computers from the incoming directions and identification codes, and the searched object 1 is identified. The data processing, recording, and display 7 computer maps the location of the object being searched 1, and records its location changes and identification data, and via the unit 11 that links to the search objects 6, as determined by the 7 satellite positioning units and radio frequency 21 MODEM Π of the search objects. and the location coordinates of 4 communicated to the control line. The search object 6 in the most appropriate position of the search objects 6 is instructed to approach the searched object 1 and is routed continuously to the searched object 1, which is either stationary or possibly location-changing.

The control panel 4 instructs the search object 6 to initiate the radio-frequency high-power transmitter 22 with the code identifier, and determines the location of the search object 6 by means of terrestrial direction measurement. Ideally, the location coordinates of high-precision, satellite-based and location-specific precision earth-based location coincide, but generally there is a difference. With the difference, the control panel 4 extrapolates the measured coordinates of the searched object 1 and takes the search object 6 further into account. The search object 6 can be reached in the vicinity of the object being searched, e.g.

The significant advantage of the system is that by properly combining satellite positioning and ground (radio frequency) positioning, it is possible to place very small space, so that it can be placed in hidden objects 1, however, the use of high precision satellite positioning does not require excessive expense. Another advantage of the system is that even in such a miniaturized form it is possible to implement coding for identifying the objects to be searched. At the same time, it is possible to define or approach more than one searched object. In principle, the number of searchable objects that can be accessed at a time 1 can reach the number of search objects running in that area.

Claims (5)

PATENT CLAIMS A method for determining and approaching the position of stationary and / or moving objects, the method of receiving the stationary and / or moving transmitter, preferably radio frequency transmitters, of a transmitter in a wanted object, determining the position of the sought object, and transmitting the measured data to (s) characterized in that the location data of the search object (s) (6) provided with the satellite positioning unit (7) is sent to the (sub) center (s) controlling the communication channel (s). , then outputting signals, preferably radio frequency signals, to determine the position of the search object (s) (6) traveling to the object (s) (1) being traversed by the command (sub) center (4,5) starting a suitable high power transmitter (22) and then transmitting these signals to the (sub) center (s) (4, 5) After processing, the location coordinates of the search object (s) (6) from satellite and terrestrial measurements are compared, and finally, the difference is extrapolated to refine the current location of the searched objects (1). Method according to claim 1, characterized in that the signals of the transmitter (2) hidden in the object (s) being searched are encoded in a manner suitable for identifying the object (s) (1) to be searched. Method according to claim 1 or 2, characterized in that the search object (s) (6), in the proximity of the search object (s) (1), have a handheld direction indicator (24), preferably a talking handheld indicator (24). approach the object (s) you are looking for (1). A system for locating and approaching stationary and / or moving objects, the system comprising control (s) center (s) with directional stations in a closed communication chain, and stationary and equipped with a transmitter for transmitting signals, preferably radio frequency signals. / or are adapted to direct the position of a moving search object (s), while transmitting low-power encoded signals, preferably encoded radio frequency signals, hidden in the search object (s) characterized in that the control (sub) center (s) (4,5) are bidirectionally connected to stationary and / or moving search objects (6), while the search objects (6) are capable of satellite positioning to determine precise location coordinates. unit (7) and ground location a high power transmitter (22) having a code identifier suitable for identification, preferably a radio frequency transmitter (22). System according to Claim 4, characterized in that the search object (s) on (6) are preferably handheld sensors for receiving signals emitted by the stationary and / or moving search object (s) (1) transmitted by a covert transmitter (2). (24), preferably talking handheld gauges (24).