Safety system and method using a safety system

Patent metadata

Field	Value
Publication number	US-12181596-B2
Application number	US-202217579940-A
Country	US
Kind code	B2
Filing date	Jan 20, 2022
Priority date	Jan 21, 2021
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

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.

First claim

The invention claimed is:

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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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.

8. 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.

9. The safety system in accordance with claim 1 , wherein the at least one radio transponder has an output interface for warnings or instructions.

10. 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.

11. 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.

12. 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.

13. 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.

14. 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.

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.

16. 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.

Assignees

• Sick Ag

Inventors

• Hammes Markus
• Natzkowski Carsten

Classifications

• G01S5/0231

  Emergency, distress or locator beacons · CPC title

• B25J9/1676

  Avoiding collision or forbidden zones · CPC title

• G05D1/0214

  in accordance with safety or protection criteria, e.g. avoiding hazardous areas (monitoring the location of vehicles within a certain area, e.g. forbidden or allowed areas, in traffic control systems for road vehicles G08G1/13) · CPC title

• G01S5/02216 Primary

  Timing or synchronisation of the receivers · CPC title

• F16P3/147 Primary

  using electro-magnetic technology, e.g. tags or radar · CPC title