# US 2018/0023840 A1 · Air conditioner, sensor unit, and air conditioning system

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- Number: US 2018/0023840 A1
- Document ID: US20180023840A1
- Status: Published application
- Kind: A1
- Application number: 15/721,019
- Filed: 2017-09-29
- Published: 2018-01-25
- Earliest claimed: 2015-03-30
- Assignees: Fujitsu Limited
- Applicants: Fujitsu Limited
- Inventors: TAKAYUKI YAMAJI
- Web page: https://patentgrep.com/patent/US20180023840A1

## CPC

- F24F 11/89: Arrangement or mounting of control or safety devices
- A61B 5/0205: Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
- A61B 5/4809: {Sleep detection, i.e. determining whether a subject is asleep or not}
- F24F 11/30: for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F 11/79: for controlling the direction of the supplied air
- F24F 2110/10: Temperature
- F24F 2120/14: Activity of occupants
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An air conditioner may include a sensor unit that includes a Doppler sensor and an inertial sensor.

## Claims

### Claim 1

An air conditioner comprising:
a sensor unit that includes a Doppler sensor and an inertial sensor.

### Claim 2 (depends on 1)

The air conditioner according to claim 1,
wherein the inertial sensor is configured such that an acceleration detection axis is aligned to a directivity direction of a radio wave transmitted from the Doppler sensor.

### Claim 3 (depends on 1)

The air conditioner according to claim 1,
wherein the inertial sensor is operated during an operation of the Doppler sensor.

### Claim 4 (depends on 1)

The air conditioner according to claim 1,
wherein the sensor unit includes a transmitter configured to transmit sensor information to a control system, and
wherein the air conditioner comprises a receiver configured to receive a control signal generated by the control system based on the sensor information.

### Claim 5 (depends on 1)

The air conditioner according to claim 1,
wherein the sensor unit is attached to a position receiving a vibration during an operation of the air conditioner.

### Claim 6 (depends on 5)

The air conditioner according to claim 5,
wherein the sensor unit is attached to a main body of the air conditioner.

### Claim 7 (depends on 5)

The air conditioner according to claim 5,
wherein the sensor unit is attached to a jig to which a main body of the air conditioner is attached.

### Claim 8 (depends on 1)

The air conditioner according to claim 1,
wherein the sensor unit corrects a detected value of the Doppler sensor in response to a detected value of the inertial sensor.

### Claim 9 (depends on 1)

The air conditioner according to claim 1,
wherein the sensor unit corrects a threshold value, used to detect a body motion state of a user in a space corresponding to an air conditioning target of the air conditioner based on a detected value of the Doppler sensor, based on a detected value of the inertial sensor.

### Claim 10 (depends on 1)

The air conditioner according to claim 1,
wherein the sensor unit obtains a length of a first waveform corresponding to a locus in which a change in detected value of the Doppler sensor is drawn per unit time in a time domain; and a length of a second waveform corresponding to a locus in which a change in detected value of the inertial sensor is drawn per unit time in a time domain and corrects the length of the first waveform in response to the length of the second waveform.

### Claim 11

A sensor unit attached to an air conditioner comprising:
a Doppler sensor; and
an inertial sensor,
wherein the sensor unit is attached to a position receiving a vibration during an operation of the air conditioner.

### Claim 12 (depends on 11)

The sensor unit according to claim 11,
wherein the position is a surface of a casing of the air conditioner.

### Claim 13 (depends on 11)

The sensor unit according to claim 11,
wherein the position is a position contacting a jig to which a main body of the air conditioner is attached.

### Claim 14

An air conditioning system comprising:
a sensor unit that includes a Doppler sensor and an inertial sensor;
an air conditioner to which the sensor unit is attached; and
a control system that is connected to the sensor unit and the air conditioner to communicate therewith, corrects a detected value of the Doppler sensor received from the sensor unit in response to a detected value of the inertial sensor received from the sensor unit, and transmits a signal generated based on a corrected value to the air conditioner.