# US 12,181,561 B2 · Sensor arrangement

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- Number: US 12,181,561 B2
- Document ID: US12181561B2
- Status: Granted
- Kind: B2
- Application number: 17/641,223
- Filed: 2020-08-07
- Published: 2024-02-08
- Granted: 2024-12-31
- Earliest claimed: 2019-09-09
- Assignees: Tridonic GmbH & Co KG
- Applicants: Tridonic GmbH & Co KG
- Inventors: Istvan Bakk
- Web page: https://patentgrep.com/patent/US12181561B2

## CPC

- G01S 13/56: for presence detection {(presence detection using near field arrangements G01V3/00, e.g. G01V3/08, G01V3/12; burglar, theft or intruder alarms with electrical actuation G08B13/22 - G08B13/26)}
- F21V 23/0471: {the sensor detecting the proximity, the presence or the movement of an object or a person}
- G01S 7/415: {Identification of targets based on measurements of movement associated with the target}
- G01S 13/583: {using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves and based upon the Doppler effect resulting from movement of targets}
- G01S 13/86: Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
- G01S 13/862: {Combination of radar systems with sonar systems}
- G01S 13/88: Radar or analogous systems specially adapted for specific applications (electromagnetic prospecting or detecting of objects, e.g. near-field detection, G01V3/00)
- 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
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR

## Abstract

The invention relates to a sensor arrangement (101) configured to detect a motion of an object. The sensor arrangement (101) comprises a motion sensor (101a) configured to detect data about the motion of the object; a vibration sensor (101b) configured to detect a vibration of the sensor arrangement (101), wherein if the vibration is lower than a threshold value, then an output signal of the sensor arrangement (101) signaling the motion of the object is output.

## Claims

### Claim 1

A sensor arrangement (101) configured to detect a motion of an object and output a trigger signal for a luminaire in response to detected motion, comprising:
a radar Doppler motion sensor (101a) configured to output a radar signal about the relative motion of the object with respect to the motion sensor;
a vibration sensor (101b) comprising an accelerometer configured to detect acceleration of the sensor arrangement (101); and
a processor (101c) configured to calculate a radar acceleration on the basis of the radar signal detected by the motion sensor (101a) and the acceleration detected by the accelerometer and to normally output a trigger signal if the calculated radar acceleration signal exceeds a motion level threshold value.

### Claim 2 (depends on 1)

The sensor arrangement (101) of claim 1, wherein the motion sensor is a doppler radar sensor.

### Claim 3 (depends on 2)

The sensor arrangement (101) of claim 2, wherein the doppler radar sensor is a radio frequency, microwave frequency or mm-wave frequency doppler radar sensor.

### Claim 4 (depends on 1)

The sensor arrangement (101) of claim 1, wherein the motion sensor is a frequency modulated continuous wave (FMCW) doppler sensor.

### Claim 5 (depends on 1)

The sensor arrangement (101) of claim 1, wherein the sensor arrangement (101) is configured to trigger an alarm, if the acceleration is greater than an alarm threshold value.

### Claim 6 (depends on 1)

The sensor arrangement (101) of claim 1, wherein the vibration sensor (101b) is a micromachined microelectromechanical systems (MEMS) accelerometer.

### Claim 7 (depends on 1)

The sensor arrangement (101) of claim 1, wherein the sensor arrangement (101) is further configured to send the detection data to a wireless network.

### Claim 8 (depends on 1)

A luminaire (100) comprising the sensor arrangement (101) of claim 1.

### Claim 9 (depends on 1)

The sensor arrangement (101) of claim 1 wherein the processor (101c) is further configured to calculate vibration level of the sensor arrangement based on the acceleration detected by the accelerometer and to not output the trigger signal if the calculated vibration level is above a vibration threshold value.

### Claim 10 (depends on 9)

The sensor arrangement (101) of claim 9, wherein the sensor arrangement further comprises a microphone (101d).

### Claim 11 (depends on 9)

The sensor arrangement (101) of claim 9, wherein the sensor arrangement further comprises an acoustic sensor (101e).

### Claim 12 (depends on 11)

The sensor arrangement (101) of claim 11, wherein if an acoustic signal matches a predefined signal pattern evaluated by the processor (101c), then the sensor arrangement (101) is configured to reject the detection of the motion of the object with or without a combination with a signal provided by the vibration sensor (101b).