Radar sensor, interchangeable radar sensor arrangement, field device and container

1. A radar sensor device, comprising:

a process measurement radar module being a first radar sensor arrangement, which is located on a side of the radar sensor device facing a process, configured to radiate a first radar measuring signal and measure a fill level of a medium as a process parameter in a first direction for determining topology of a filling material surface; and

a radar sensor arrangement, which is located on an opposite side of the radar sensor device facing away from the process, configured to radiate a second radar measuring signal and monitor an environment of the radar sensor device, in which the filling material surface to be measured is not located, in a second direction, the second direction being different from the first direction and having, with the first direction, an angle greater than 90°.

2. The radar sensor device according to claim 1 ,

wherein the first direction and the second direction form an angle of 180 degrees.

3. The radar sensor device according to claim 1 , further comprising

a measuring device housing,

wherein the process measurement radar module and the radar sensor arrangement are arranged in the measuring device housing.

4. The radar sensor device according to claim 1 ,

wherein the radar sensor arrangement is further configured to detect a gesture of a user, and

wherein the detected gesture is used to control the process measurement radar module.

5. The radar sensor device according to claim 1 ,

wherein the radar sensor arrangement is further configured to detect an interfering reflector outside a container, and

wherein knowledge of the interfering reflector is used to identify an interfering reflection detected by the process measurement radar module.

6. The radar sensor device according to claim 1 ,

wherein the radar sensor arrangement is further configured to detect a user approaching the radar sensor device, and

wherein knowledge of the user's approach is used to control a display or a backlight.

7. The radar sensor device according to claim 1 ,

wherein the radar sensor arrangement is configured to detect whether or not one or a plurality of objects are within a detection range of the radar sensor arrangement, and

wherein a measurement rate of the process measurement radar module is changed when one or the plurality of objects are detected as being within the detection range of the radar sensor arrangement.

8. The radar sensor device according to claim 1 ,

wherein the radar sensor arrangement is configured to detect whether or not an opening of a container is open, and

wherein a measurement rate of the process measurement radar module is changed when the opening is detected as being open.

9. The radar sensor device according to claim 1 ,

wherein the radar sensor arrangement is configured to be activated by touching, knocking or tapping by a user.

10. The radar sensor device according to claim 1 ,

wherein the process measurement radar module is an FMCW radar sensor arrangement or a pulse radar sensor arrangement, and

wherein the radar sensor arrangement is a chirp sequence radar sensor arrangement, an FMCW radar sensor arrangement, or a pulse Doppler radar sensor arrangement.

11. The radar sensor device according to claim 1 ,

wherein the process measurement radar module transmits radar signals in a first frequency range, and

wherein the radar sensor arrangement transmits radar signals in a second frequency range which is unequal to the first frequency range.

12. A device comprising:

a radar sensor arrangement, as a second radar sensor arrangement for the radar sensor device of claim 1 , configured to monitor an environment of a field device and to be mounted to, or in, a measuring device housing of the field device, the radar sensor arrangement including an interface configured to transmit data obtained by the environment monitoring of the field device when the radar sensor arrangement is mounted on the field device.

13. The device according to claim 12 , wherein the interface is further configured to supply power to the radar sensor arrangement from the field device.

14. The device according to claim 12 , wherein the interface is a 4-20 mA two-wire interface.

15. The device according to claim 12 , wherein the radar sensor arrangement is set up as an operating module of the field device.

16. The device according to claim 12 , wherein the radar sensor arrangement is designed as an interchangeable radar sensor arrangement.

17. The device according to claim 12 , wherein the device is a field device.

18. The device according to claim 12 , wherein the device is a fill level measuring device, a pressure gauge, a flow meter or a limit level sensor.

19. The radar sensor device according to claim 12 ,

wherein the radar sensor device is configured to use measurement data of the environment of the second radar sensor arrangement to influence the measurement from the process measurement radar module.

20. The radar sensor device according to claim 12 ,

wherein the first radar sensor arrangement and the second radar sensor arrangement are integrated in a semiconductor device.

21. The radar sensor device according to claim 12 , further comprising:

a measuring device housing,

wherein the process measurement radar module and the radar sensor arrangement are arranged in the measuring device housing.

22. The radar sensor device according to claim 21 ,

wherein the second radar sensor arrangement is configured to transmit the second radar measuring signal through a housing wall of the measuring device housing in the direction of the environment of the radar sensor device.