BA-BLE: Difference between revisions
→RSSI filter
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[[Файл:Измерение RSSI меток BA-BLE.png|968x968пкс]] | [[Файл:Измерение RSSI меток BA-BLE.png|968x968пкс]] | ||
Also for correct operation of this filter it is desirable to use a '''filter timer''' and on the mark it is desirable to set a frequent transmission, for example, '''every second'''. | |||
=== '''<big>Filter Timer</big>''' === | === '''<big>Filter Timer</big>''' === | ||
This filter is necessary to sort tags by time of being in the reception radius, the number of appearances (pings) of the tag filtered by ID and signal strength (RSSI) for a set period of time. | |||
To add it, enable the filter('''1''') and set the number of ping('''2''') and time window('''3'''). | |||
[[Файл:Добавление фильтра таймер BA-BLE.png|925x925пкс]] | [[Файл:Добавление фильтра таймер BA-BLE.png|925x925пкс]] | ||
It is recommended to set the number of occurrences slightly less than half of the number of sends to the tag, that is, if the tag sends every second and the filter for 50 seconds the number of occurrences should be set to 24. | |||
Also the period of RS-485 zeroing should be slightly longer than the timer time window. | |||
=== '''<big>Filter Active Tags</big>''' === | === '''<big>Filter Active Tags</big>''' === | ||
This filter is required to sort by the number of accepted tags. | |||
To add, enable the filter('''1''') and set the number of active tags('''2'''). | |||
[[Файл:Добавление фильтра активных меток BA-BLE.png|930x930пкс]] | [[Файл:Добавление фильтра активных меток BA-BLE.png|930x930пкс]] | ||
=== '''<big>RSSI filter max</big>''' === | === '''<big>RSSI filter max</big>''' === | ||
This filter is needed to sort the tags with the best reception. | |||
To add, enable the filter('''1''') and set the number of active tags with the best signal('''2'''). | |||
[[Файл:Добавление фильтра RSSI max BA-BLE.png|943x943пкс]] | [[Файл:Добавление фильтра RSSI max BA-BLE.png|943x943пкс]] | ||
== '''<big>Example of work</big>''' == | == '''<big>Example of work</big>''' == | ||
Example: tags with ID Major:1 Minor:100 and Major:1 Minor:200 transmit data every second, first tag with ID 100 approached BA-BLE reader for 30 seconds and after 15 seconds tag with ID 200, the reader has filters: on Major:1, RSSI -70 dBm (filtering by signal strength/approximation) and Timer for 15 appearances (pings) in 30 seconds, RS-485 settings: Address 1, zeroing period 60 seconds. After 15 appearances of the tag with ID 100 with RSSI -70 dBm and better it passed filtering and began to transmit its ID on RS-485 (each request LLS returns with a level of 100 and temperature 1) after another 15 seconds, the tag with ID 200 also passes filtering and gets into the queue for issuance, and begins simultaneous transmission of two tags (one request LLS response with a level of 100 and temperature 1 and the second request LLS response with a level of 200 and temperature 1) so continues until each individual ID will not be transmitted during the zeroing period (60 seconds). | |||
This example is in Navtelecom telemetry: | |||
[[Файл:Пример передачи ID-TAG через BA-BLE.gif]] | [[Файл:Пример передачи ID-TAG через BA-BLE.gif]] | ||