British Cave Monitoring Centre (Home)

Logger Status

Data collected at 02:22:01 on 18-May-2024 (View History File)

Software version 2.2. File /home/bcra/public_html/data/logger_status.php (last modified 11:24:57 on 25-Oct-2022)

The TinyTag Gateway was mined for data at 02:22:01 on 18-May-2024, which was 02:44:21 ago.

This data can also be obtained directly, by visiting the TinyTag Gateway. One reason for 'mining' it and storing it on our server is that it allows us to write code to (for example), send us an alert, via text message or email, if the logger status should change. That is not yet implemented.

Another reason for mining the data is that we can generate a history file to see if there were any glitches. In that file, a "dot" on the final line is short-hand for "no change". And, to make the lines of text shorter, the text "HAPPY" is replaced by "ok".

#	Device	BCRA Name	Tinytag Description	Tinytag Status
1	790060	Internal pressure 2nd elec box (P)	not mined	RUMOURED_TO_EXIST
2	807565	Rainfall (DR)	not mined	STALE
3	832627	Entrance door repeater	Tinytag Plus Radio Logger Dual Thermistor probe	HAPPY
4	840300	Cave Entrance (T)	Tinytag Plus Radio Logger Quad Thermistor probe	HAPPY
5	840301	1st Electrical Box (T)	not mined	RUMOURED_TO_EXIST
6	844534	External Temperature Hut 11 (T)	Tinytag Plus Radio Receiver	HAPPY
7	879721	External pressure Hut 11 (P)	Tinytag Plus Radio Logger Atmospheric Pressure	HAPPY
8	901903	LAN receiver in cave	not mined	RUMOURED_TO_EXIST
9	926759	Poached egg chamber (T)	not mined	RUMOURED_TO_EXIST
10	929117	Railing by 2nd Electrical box (temp)	not mined	STALE
11	929128	Speleothem cluster (DR)	Tinytag Plus Radio Logger Quad Count	HAPPY
12	929129	Mid cave non hyper-alkaline (DR)	not mined	RUMOURED_TO_EXIST
13	954904	?	not mined	RUMOURED_TO_EXIST

Where that data comes from

Device: Click on the Devices tab on the TinyTag Gateway index page to bring up the Devices Index, which lists the devices and their status.
BCRA Name: This is obtained by cross-referencing the Device number to a master list of logger names at logger_names.txp. That list should be edited (ask IT) when a logger is replaced or re-assigned.
Tinytag Description: At the TinyTag Gateway index page, click on the Devices tab to bring up the Devices Index. Click on a Device Number and then click on its Datasheet link. In the table of data, the row device_description contains the Tinytag Description. If the datasheet link could not be found, this mining operation returns the string "not mined".
Tinytag Status: See Device, above.

CRON settings

At the moment, a CRON setting causes the logger status data to be collected as follows (E&OE). Please check with David Gibson to see if the CRON settings quoted below are still current.

CRON settings:
Times: 22 1,13 * * * (that is, those minutes, every hour)
Command: curl http://bcra.org.uk/data/logger_status_now.html
   >/home/bcra/public_html/data/logger_status.html 2>/dev/null

Technical notes

The file logger_status.html is automatically generated by the above periodic CRON job, which executes the file logger_status_now.html and writes its output to disc, as logger_status.html.
If you want to know the logger status in real time, just go to logger_status_now.html, but be prepared for a wait of perhaps 30 seconds, whilst it fetches the data from the TinyTag Gateway.
The data you collect will not be transferred to logger_status.html, which will continue to show the data from the last time CRON was run. However, the results of your "ping" will be added to the history file.
Further debugging: (1) add the query string ?cron=test to avoid mining TinyTag's files for the names of the loggers. This will speed up the test quite a bit. Add ?cron=test&happy=no for force the loggers to report as unhappy.

This page, http://bcra.org.uk/data/logger_status_now.html was last modified on Fri, 07 Apr 2023 15:50:42 +0100
Server: britiac4.british-caving.org.uk (31.25.186.126)