# US 9,753,182 B1 · Mapping UV index data measured by UV dosimetry system

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- Number: US 9,753,182 B1
- Document ID: US9753182B1
- Status: Granted
- Kind: B1
- Application number: 14/257,778
- Filed: 2014-04-21
- Granted: 2017-09-05
- Earliest claimed: 2013-04-24
- Assignees: Ultra, Inc.
- Applicants: Nabyl Bennouri; Jie Lian; Nattapon Chaimanonart
- Inventors: Nabyl Bennouri; Jie Lian; Nattapon Chaimanonart
- Web page: https://patentgrep.com/patent/US9753182B1

## CPC

- G01W 1/02: Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed (G01W1/10 takes precedence)
- G01J 1/0219: {Electrical interface; User interface}
- G01J 1/0233: {Handheld}
- G01J 1/0247: {using a charging unit}
- G01J 1/42: using electric radiation detectors (optical or mechanical part G01J1/04; by comparison with a reference light or electric value G01J1/10)
- G01J 1/429: {applied to measurement of ultraviolet light (using counting tubes G01T)}
- A61B 5/441: {Skin evaluation, e.g. for skin disorder diagnosis}
- G01J 1/44: Electric circuits {(for command of an exposure part G03B7/02)}
- G01W: METEOROLOGY (radar, sonar, lidar or analogous systems, designed for meteorological use G01S13/95, G01S15/88, G01S17/95)
- G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A UV dosimetry system comprises a wearable unit and a mobile computing device. The wearable unit measures the UV irradiance intensity and wirelessly communicates with the mobile computing device. The UV dosimetry system supports multi-user control and can link one mobile computing device with multiple wearable units. The UV dosimetry system processes the measured UV irradiance intensity to calculate the UV index (UVI) and the sensor site specific UV dose. It can also calculate the total absorbed UV dose and vitamin D production by taking into account user specific factors. The UVI data measured by a plurality of UV meters such as the disclosed UV dosimetry system are crowd sourced to a remote server together with the location and time data of the measurement. The remote server excludes invalid UVI measurement and generates UVI maps showing time-varying distribution of UVI data at different locations.

## Claims

### Claim 1

A system for crowd sourcing of UV measurement data with improved quality control, the system comprising:
a remote server; and
a plurality of UV meters, each of the plurality of UV meters comprises:
a circuitry for measuring irradiating UV intensity and corresponding UV index (UVI);
a location tracking unit for measuring a location of said UV meter;
a clock unit for measuring time; and
a communication unit operative to transmit data to said remote server through a communication network, and duration between two consecutive data transmissions is configured to be greater than a programmable value so as to prevent repeated transmission of same data;
said remote server running a database management software operative to generate UVI maps wherein the database management software comprises a filter that is adapted to remove invalid UVI measurement data received at a specific time from a specific location, wherein the invalid UVI measurement data comprises UVI data that falls outside an expected normal range of UVI calculated based on a statistical distribution of all UVI data measured during a time period centered around said specific time with a predefined time interval and from a region centered around said specific location with a predefined distance.

### Claim 2 (depends on 1)

The system of claim 1, wherein said UVI maps show a distribution of UVI data at different locations measured by the plurality of UV meters at different times, excluding the invalid UVI measurement data; and said UVI maps are updated periodically according to a predefined time interval.

### Claim 3 (depends on 2)

The system of claim 2, wherein said remote server provides a user interface supporting remote user access of said UVI maps through a communication network.

### Claim 4 (depends on 2)

The system of claim 2, wherein each of the plurality of UV meters is configured to transmit data to said remote server automatically on periodic basis, or manually triggered by a user's command through a user input interface of said UV meter, and the frequency of data transmission is limited by a programmable value defining the shortest duration between two consecutive data transmissions.

### Claim 5 (depends on 1)

The system of claim 1, wherein said remote server is configured to receive forecast UVI at different time and locations from predefined sources.

### Claim 6 (depends on 5)

The system of claim 5, wherein the detected invalid UVI measurement data comprises UVI data that deviates from the forecast UVI at said specific time and location by more than a predefined tolerance value.

### Claim 7 (depends on 6)

The system of claim 6, wherein the filter is adapted to remove the invalid UVI measurement data based on the forecast UVI when a sample size of the measured UVI data is smaller than or equal to a predefined threshold, and based on the measured UVI data when its sample size exceeds said predefined threshold.

### Claim 8 (depends on 1)

The system of claim 1, wherein each of the plurality of UV meters further comprises a temperature sensing unit for measuring a local temperature, and is operative to transmit the measured local temperature data together with the concurrently measured UVI data to said remote server.

### Claim 9 (depends on 8)

The system of claim 8, wherein the invalid UVI measurement data comprises UVI data that has the concurrently measured local temperature falling outside an expected normal range of temperature calculated based on a statistical distribution of all temperature data measured during a time period centered around said specific time with a predefined time interval and from a region centered around said specific location with a predefined distance.

### Claim 10 (depends on 8)

The system of claim 8, wherein said remote server is configured to receive forecast temperature at different time and locations from predefined sources; and the invalid UVI measurement data comprises UVI data that has the concurrently measured local temperature deviating from the forecast temperature at said specific time and location by more than a predefined tolerance value.

### Claim 11

A method for crowd sourcing UV measurement data with improved quality control, the method comprising:
measuring UVI by a plurality of UV meters, and tracking location and time of UVI measurement by said plurality of UV meters;
transmitting measured UVI, location, and time data measured by said plurality of UV meters to a remote server through a communication network, and duration between two consecutive data transmissions is configured to be greater than a programmable value so as to prevent repeated transmission of same data;
processing said measured UVI, location, and time data by a database management software running on said remote server to generate UVI maps, wherein the database management software comprises a filter that is adapted to remove invalid UVI measurement data received at a specific time from a specific location, wherein the invalid UVI measurement data comprises UVI data that falls outside an expected normal range of UVI calculated based on a statistical distribution of all UVI data measured during a time period centered around said specific time with a predefined time interval and from a region centered around said specific location with a predefined distance.

### Claim 12 (depends on 11)

The method of claim 11, wherein said UVI maps show a distribution of UVI data at different locations measured by the plurality of UV meters at different times, excluding the invalid UVI measurement data; and said UVI maps are updated periodically according to a predefined time interval.

### Claim 13 (depends on 12)

The method of claim 12, wherein each of the plurality of UV meters is configured to transmit data to said remote server automatically on periodic basis, or manually triggered by a user's command through a user input interface of said UV meter.

### Claim 14 (depends on 11)

The method of claim 11, wherein said remote server provides a user interface supporting remote user access of said UVI maps through a communication network.

### Claim 15 (depends on 11)

The method of claim 11, wherein said remote server is configured to receive forecast UVI at different time and locations from predefined sources.

### Claim 16 (depends on 15)

The method of claim 15, wherein the detected invalid UVI measurement data comprises UVI data that deviates from the forecast UVI at said specific time and location by more than a predefined tolerance value.

### Claim 17 (depends on 16)

The method of claim 16, wherein the filter is adapted to remove the invalid UVI measurement data based on the forecast UVI when a sample size of the measured UVI data is smaller than or equal to a predefined threshold, and based on the measured UVI data when its sample size exceeds said predefined threshold.

### Claim 18 (depends on 11)

The method of claim 11, wherein each of the plurality of UV meters further comprises a temperature sensing unit for measuring a local temperature, and is operative to transmit the measured local temperature together with concurrently measured UVI data to said remote server.

### Claim 19 (depends on 18)

The method of claim 18, wherein the invalid UVI measurement data comprises UVI data that has the concurrently measured local temperature falling outside an expected normal range of temperature calculated based on a statistical distribution of all temperature data measured during a time period centered around said specific time with a predefined time interval and from a region centered around said specific location with a predefined distance.

### Claim 20 (depends on 18)

The method of claim 18, wherein said remote server is configured to receive forecast temperature at different time and locations from predefined sources; and the invalid UVI measurement data comprises UVI data that has the concurrently measured local temperature deviating from the forecast temperature at said specific time and location by more than a predefined tolerance value.
