RU2714298C1 - System for radio-frequency code location of objects - Google Patents

Abstract

FIELD: wireless communication equipment.SUBSTANCE: invention relates to systems for stable identification of control objects movable relative to locator. In system of radio-frequency code location of objects, including at least two receivers, adapted to receive wireless signals, authentication signal from mobile device, information processing unit, according to invention, control mark installed on the monitoring object is made in the form of a self-contained device, with possibility of periodic radiation at the established frequency of the modulated signal containing a unique digital identifier, wherein the multidirectional radar antennas are configured to receive signals periodically transmitted by the control mark, without establishing a two-way radio communication session, processing unit based on previously recorded information ignores signals of all control marks whose numbers are not included in memory cells by comparing identifier in received signal with identifiers available in memory cells, when each of the received from the selected control mark hits the power level in the signature tolerances field corresponding to the given identifier and previously inserted into the locator memory cells, central microprocessor of locator makes a decision on validity of location of control object equipped with this mark on the basis of simultaneous compliance of both identifier and signature of received signal previously recorded in locator memory cells.EFFECT: reduced power consumption of the system and possibility to control only a certain group of devices.1 cl, 1 tbl, 2 dwg

Description

The invention relates to systems for the stable identification of objects of control that are movable relative to the locator.

US2006046709 discloses a proximity detection system using a wireless signal level operating in a wireless (Wi-Fi) network, including a base station, a server, and a plurality of mobile devices exchanging data with each other, the method including obtaining a first signature containing data about the signal level relative to signals received by the first network device from at least one base station; obtaining a second signature containing signal strength data regarding signals received by the second network device from at least one base station; and calculating an approximate distance from the first network device to the second network device based on the first and second signatures.

The disadvantages of the known system is the difficulty of implementation, while in the known system it is not supposed to determine the direction to the signal source, and the accuracy of determining the location depends on the number of receiving signal receivers.

Closest to the claimed technical solution is known on the application US 2014370917 system for identifying the first in-line device, comprising: a first antenna configured to send the first signal; a second antenna configured to send a second signal, said second antenna being spaced from said first antenna so that a delta value between a first received signal strength indicator (RSSI) value of said first signal and a second RSSI value of said second signal measured in a predetermined distance range , is within a predefined range of values; a receiver adapted to receive wireless signals, said receiver configured to receive an authentication signal from a mobile device configured to measure said first RSSI value and said second RSSI value, said authentication signal includes authentication data related to said RSSI measured values; and a processing unit, said processing unit being configured to determine whether said mobile device is the first in line device based on whether the delta value between said first RSSI value and said second RSSI value is within a predetermined range of values.

In the known system, the stationary antennas of the positioning system emit a signal of known power, and the tag (which, among other things, is proposed to use a mobile phone with the installed modem control program) reads data on the strength of the received signals and transmits them to the system for calculation by the system of its location .

The disadvantages of the known system is the high energy intensity of the label and the inability to select certain control objects.

The technical result of the claimed utility model is to reduce the energy consumption of the system and the ability to control only a certain group of devices.

The technical result is achieved in that in a system of radio-frequency code location of objects, including at least two receivers, adapted to receive wireless signals, an authentication signal from a mobile device, the information processing unit, according to the invention, the control mark installed on the control object is made in the form autonomous device, with the possibility of periodic radiation at a set frequency of a modulated signal containing a unique digital identifier, These locator antennas are configured to receive signals periodically transmitted by the control tag without establishing a two-way radio communication session, the processing unit, based on previously recorded information, ignores the signals of all control tags whose numbers are not entered in the memory by comparing the identifier in the received signal with the identifiers available in the memory cells, when each of the signals received from the selected control mark is hit by the power level in the tolerance field of the signature corresponding to this identifier introduced earlier in the memory cell locator, the locator central microprocessor decides the validity of the location control object equipped with this mark on the basis of simultaneous compliance as the identifier and the signature of the received signal previously recorded in the memory cell locator.

In the claimed system, the processor and the radio path in the tag are not busy continuously scanning the ether and establishing communication with external devices for transmitting data, in the intervals between transmission cycles, the tag is in sleep mode, and thus significantly saves the energy of an autonomous power source. To determine the fact that the mark is located in a certain area relative to the locator, the signature-based location method is used, in which, during a certain time, in real conditions, calibration is performed in which the mark signals received by two different channels of differently oriented antennas are read and stored by the locator.

Setting up the system to work only with control labels, the numbers of which are entered in memory cells, allows you to control only a specific group of devices.

The essence of the claimed invention is illustrated by schemes:

In FIG. 1 shows a block diagram of a tag.

In FIG. 2 shows a block diagram of a locator with two radio channels.

The label includes an autonomous power source 1, a microprocessor with a radio contact 2, an omnidirectional antenna 3; the locator includes antennas 4, microprocessors with radio contacts 5, the central microprocessor 6, interface 7 An example of a label signature.

After the system recognizes the mark whose number is entered in the memory cell, the position of the mark can be displayed on the coordinate grid.

Claims (1)

A system of radio-frequency code location of objects, including at least two receivers adapted to receive wireless signals, an authentication signal from a mobile device, an information processing unit, characterized in that the control mark installed on the control object is made in the form of an autonomous device, with the possibility of periodic radiation at a set frequency of a modulated signal containing a unique digital identifier, while the multidirectional antennas of the locator are configured to receive a signal Of the signals periodically transmitted by the control tag without establishing a two-way radio communication session, the processing unit, based on previously recorded information, ignores the signals of all control tags whose numbers are not entered in the memory cells by comparing the identifier in the received signal with the identifiers in the memory cells, when each of the signals received from the selected control label falls into the power level in the tolerance field of the signature corresponding to this identifier and entered earlier in the locator's memory cells, trawling locator microprocessor decides the validity of the location control object equipped with this mark on the basis of simultaneous compliance as the identifier and the signature of the received signal previously recorded in the memory cell locator.

Images