# US 12,181,596 B2 · Safety system and method using a safety system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,181,596 B2 - Document ID: US12181596B2 - Status: Granted - Kind: B2 - Application number: 17/579,940 - Filed: 2022-01-20 - Published: 2022-07-21 - Granted: 2024-12-31 - Earliest claimed: 2021-01-21 - Assignees: Sick AG - Applicants: Sick AG - Inventors: Markus Hammes; Carsten Natzkowski - Web page: https://patentgrep.com/patent/US12181596B2 ## CPC - F16P 3/147: {using electro-magnetic technology, e.g. tags or radar} - G01S 5/02216: {Timing or synchronisation of the receivers} - G01S 5/0231: {Emergency, distress or locator beacons} - F16P: SAFETY DEVICES IN GENERAL; {SAFETY DEVICES FOR PRESSES} - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract A method using a safety system and a safety system for localizing at least one object, with varying locations, are provided. A radio location system has at least three arranged radio stations and at least one radio transponder is arranged at the object. Position data of the radio transponder and the object can be determined by means of the radio location system. The position data can be transmitted from a radio station of the radio location system to a control and evaluation unit which is configured to cyclically detect the position data of the radio transponder. A first inspection unit is connected to the control and evaluation unit, and the control and evaluation unit is checked by the first inspection unit. ## Claims ### Claim 1 A safety system for localizing at least one object with varying locations, the safety system having at least one control and evaluation unit, and at least one radio location system, wherein the at least one radio location system has at least three arranged radio stations; wherein at least one radio transponder is arranged at the at least one object; wherein position data of the at least one radio transponder and the object is determined by the at least one radio location system; wherein the position data is transmitted from the at least three radio stations of the at least one radio location system to the at least one control and evaluation unit; wherein the control and evaluation unit is configured to cyclically detect the position data of the at least one radio transponder; wherein the safety system further comprises a first inspection unit connected to the control and evaluation unit, the control and evaluation unit being monitored by the first inspection unit, and wherein the at least one radio transponder comprises at least one second inspection unit, the at least one second inspection unit being cyclically reset by a signal from the first inspection unit. ### Claim 2 (depends on 1) The safety system in accordance with claim 1, wherein the position data can be transmitted from the at least one radio transponder to the at least one control and evaluation unit. ### Claim 3 (depends on 1) The safety system in accordance with claim 1, wherein at least one of the first inspection unit and the at least one second inspection unit has a timer. ### Claim 4 (depends on 3) The safety system in accordance with claim 3, wherein the at least one second inspection unit comprises a plurality of second inspection units each having the timer, wherein each of timers of the plurality of second inspection units has an individual time value. ### Claim 5 (depends on 1) The safety system in accordance with claim 1, wherein the position data is transmitted from the at least one radio transponder to the first inspection unit. ### Claim 6 (depends on 1) The safety system in accordance with claim 1, wherein the at least one radio transponder has at least one of safe switching outputs and a safe interface. ### Claim 7 (depends on 6) The safety system in accordance with claim 6, wherein at least one of the safe switching outputs and the safe interface is actuated when a set time of a timer elapses and is not reset. ### Claim 8 (depends on 1) The safety system in accordance with claim 1, wherein at least one of the first inspection unit and the at least one second inspection unit is configured to check at least one of a number and a kind of data telegrams of the at least one radio transponder. ### Claim 9 (depends on 1) The safety system in accordance with claim 1, wherein the at least one radio transponder has an output interface for warnings or instructions. ### Claim 10 (depends on 1) The safety system in accordance with claim 1, wherein the at least one radio transponder comprises a plurality of radio transponders, wherein the at least one object comprises a plurality of objects, wherein each of the radio transponders has unique identification, with a respective one of the radio transponders being associated with a respective one of the objects, whereby the control and evaluation unit is configured to distinguish between the objects. ### Claim 11 (depends on 1) The safety system in accordance with claim 1, wherein the at least one radio transponder is configured to transmit safe control signals for an initiation of risk reduction measures to the control and evaluation unit. ### Claim 12 (depends on 1) The safety system in accordance with claim 1, wherein the control and evaluation unit is configured to transmit safe control signals for an initiation of risk reduction measures to the at least one radio transponder. ### Claim 13 (depends on 1) The safety system in accordance with claim 1, wherein the at least one radio location system is an ultra wideband radio location system, with a frequency thereof being in the range from 3.1 GHz to 10.6 GHZ, with a transmission energy thereof having a maximum of 0.5 mW. ### Claim 14 (depends on 1) The safety system in accordance with claim 1, wherein the first inspection unit is configured to perform monitoring functions selected from the group consisting of validating the position data, transmitting at least one switchover signal for a safety status of the at least one radio transponders, initiating at least one inspection unit reset signal to the at least one radio transponder, and combinations thereof. ### Claim 15 A method for localizing at least one object with varying locations using a safety system, the safety system having at least one control and evaluation unit and at least one radio location system, wherein the at least one radio location system has at least three arranged radio stations, the method comprising: arranging at least one radio transponder at the at least one object; determining position data of the at least one radio transponder and the at least one object using the at least one radio location system; transmitting the position data from the at least three radio stations of the at least one radio location system to the control and evaluation unit, wherein the control and evaluation unit cyclically detects the position data of the at least one radio transponder; and monitoring the control and evaluation unit with a first inspection unit connected to the control and evaluation unit, wherein the at least one radio transponder comprises at least one second inspection unit, the at least one second inspection unit being cyclically reset by a signal from the first inspection unit. ### Claim 16 (depends on 15) The method in accordance with claim 15, wherein the first inspection unit performs monitoring functions selected from the group consisting of validating the position data, transmitting at least one switchover signal for a safety status of the at least one radio transponders, initiating at least one inspection unit reset signal to the at least one radio transponder, and combinations thereof.