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@ -21,7 +21,7 @@ The two main reasons why the artworks don't produce a high enough |
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flicker/flash rate are as follows: |
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flicker/flash rate are as follows: |
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1. The devices controlling the lights in the gallery cannot receive |
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1. The devices controlling the lights in the gallery cannot receive |
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enough new readings-per-second to reach the Hertz required to cause |
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enough new readings-per-second to reach the hertz required to cause |
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a seizure (according the reference sources below); And, |
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a seizure (according the reference sources below); And, |
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2. The welders in the factory do not alter the light levels (in their |
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2. The welders in the factory do not alter the light levels (in their |
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welding booths) at a high enough rate to trigger a seizure. |
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welding booths) at a high enough rate to trigger a seizure. |
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@ -31,8 +31,8 @@ reason why is because I can refer you to the link below to address the |
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first point: |
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first point: |
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- |
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- |
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[Relay](https://git.abbether.net/return-to-ritherdon/relay/src/branch/unstable/relay.py#L51)(the |
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[Relay](https://git.abbether.net/return-to-ritherdon/relay/src/branch/unstable/relay.py#L51) |
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software controlling the lights in the gallery) |
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(the software controlling the lights in the gallery) |
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The highlighted line (on the linked page) indicates the gallery lights |
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The highlighted line (on the linked page) indicates the gallery lights |
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must wait 0.3 seconds until it receives the latest light reading |
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must wait 0.3 seconds until it receives the latest light reading |
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@ -44,16 +44,18 @@ To expand on the second point, I have analysed and reviewed a |
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days-worth of **live test** data, collected on the |
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days-worth of **live test** data, collected on the |
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**23/04/2021**. *Personal Flash in Real Time (Ross)* (the light meter |
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**23/04/2021**. *Personal Flash in Real Time (Ross)* (the light meter |
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part of the artwork) took the light readings from **06:57 to 16:00** |
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part of the artwork) took the light readings from **06:57 to 16:00** |
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(approx. 9 hours). Also, the test was conducted in the intended |
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(approx. 9 hours). Also, the test was conducted under the intended |
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environment and under real-world conditions. |
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environment and under real-world conditions. |
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The overall assessment of the data is the light meter took readings at |
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The overall assessment of the data is the light meter took readings at |
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a rate of four readings-per-second for approximately two |
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a rate of four readings-per-second for approximately two |
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(non-consecutive) hours. Within that time, the light meter *produced |
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(non-consecutive) hours. Within that time, the light meter produced |
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readings* which could trigger a flash rate of two hertz, at most, if |
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*readings* which generated a flash rate of two hertz, at most. And, it |
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the gallery light wasn't already limited to three |
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reached this 'peak' for a total of three non-consecutive seconds |
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readings-per-second. And, it reached this 'peak' for a total of three |
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throughout the nine hours. With the light meter demonstrating it has |
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non-consecutive seconds throughout the nine hours. |
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*the potential* to generate enough new readings-per-second, the |
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gallery lights have a hard limit of three readings-per-second encoded |
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into their systems (via their software). |
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## Information About Photosensitive Epilepsy |
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## Information About Photosensitive Epilepsy |
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@ -66,7 +68,7 @@ trigger seizures but this varies from person to person. While some |
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people are sensitive at frequencies up to 60 hertz, sensitivity under |
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people are sensitive at frequencies up to 60 hertz, sensitivity under |
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3 hertz is not common. |
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3 hertz is not common. |
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More information can be found at: |
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More information available at: |
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- [Epilepsy Society](https://epilepsysociety.org.uk/) (home page) |
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- [Epilepsy Society](https://epilepsysociety.org.uk/) (home page) |
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- [Epilepsy |
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- [Epilepsy |
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@ -180,7 +182,7 @@ are available if needed. |
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If you would like to see the data in situ, click on the following: |
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If you would like to see the data in situ, click on the following: |
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- [test-data-lite.csv](https://git.abbether.net/return-to-ritherdon/rtr-docs/src/branch/unstable/health-and-safety/data/test-data-lite.csv) |
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- [test-data-lite.csv](data/test-data-lite.csv) |
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The data consists of three columns: |
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The data consists of three columns: |
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@ -252,7 +254,7 @@ document. |
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## Breakdown of Data Analysis |
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## Breakdown of Data Analysis |
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Within the [data](/data) directory, the [results](/data/results) |
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Within the [data](data) directory, the [results](data/results) |
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directory contains four files. These files are the result of the data |
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directory contains four files. These files are the result of the data |
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analysis. |
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analysis. |
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@ -274,7 +276,7 @@ assessment. And, each file will have its own subsection below. |
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### readings-per-sec.csv |
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### readings-per-sec.csv |
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- [readings-per-sec.csv](/data/results/readings-per-sec.csv) |
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- [readings-per-sec.csv](data/results/readings-per-sec.csv) |
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Overall, the test data recorded **84,294** readings over the course of |
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Overall, the test data recorded **84,294** readings over the course of |
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about nine hours. With that said, the readings-per-second rates |
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about nine hours. With that said, the readings-per-second rates |
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@ -360,7 +362,7 @@ recordings and not all of it. |
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### readings_above_threshold.csv |
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### readings_above_threshold.csv |
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- [readings_above_threshold.csv](/data/results/readings_above_threshold.csv) |
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- [readings_above_threshold.csv](data/results/readings_above_threshold.csv) |
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To review the time periods were the light meter was recording above |
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To review the time periods were the light meter was recording above |
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three hertz, I needed to know there timestamps. This file is a list of |
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three hertz, I needed to know there timestamps. This file is a list of |
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@ -372,7 +374,7 @@ file is an artefact of the filtering process and needed to generate |
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### flicker_list.csv |
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### flicker_list.csv |
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- [flicker_list.csv](/data/results/flicker_list.csv) |
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- [flicker_list.csv](data/results/flicker_list.csv) |
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This file lists all the moments the light meter recorded at four |
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This file lists all the moments the light meter recorded at four |
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readings-per-second and the light levels at those times. I should note |
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readings-per-second and the light levels at those times. I should note |
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@ -422,7 +424,7 @@ system flash rate was one hertz for that second. |
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### filtered_flicker_entries.csv |
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### filtered_flicker_entries.csv |
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- [flicker_entries.csv](/data/results/flicker_entries.csv) |
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- [flicker_entries.csv](data/results/flicker_entries.csv) |
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The data in this file filters the data in `flicker_list.csv` down to |
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The data in this file filters the data in `flicker_list.csv` down to |
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eight time periods. These are the times the light recorded at four |
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eight time periods. These are the times the light recorded at four |
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