mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-11-16 10:55:21 +01:00
81 lines
3.0 KiB
ReStructuredText
81 lines
3.0 KiB
ReStructuredText
Geiger counter RadiationD v1.1 (CAJOE)
|
||
======================================
|
||
|
||
.. seo::
|
||
:description: Instructions for setting up RadiationD v1.1(CAJOE) sensor in ESPHome and calculate the current radation level.
|
||
:image: radiationD-v1-1-cajoe_small.jpg
|
||
:keywords: Radiation Geiger counter
|
||
|
||
With the help of :doc:`/components/sensor/pulse_counter` and the RadiationD v1.1(CAJOE) you can make your own Geiger counter, which will give you
|
||
a more or less precise messurement of the current radation level. But it should be good enough to warn you about critical events.
|
||
|
||
|
||
Assambly:
|
||
---------
|
||
|
||
.. figure:: images/radiationD-v1-1-cajoe_small.jpg
|
||
:align: center
|
||
:width: 100.0%
|
||
|
||
The first step is to connect the sensor.
|
||
|
||
You just need to connect the +5V, the ground and a GPIO pin to the ESP.
|
||
In my case I used the pin 34 for the signal. (The print on the PCB is wrong VIN is the signal.)
|
||
This setup should give you the pulse of each messurement or count. For more information check the Video of `Andreas Spiess <https://www.youtube.com/watch?v=K28Az3-gV7E>`__.
|
||
|
||
Housing:
|
||
*********
|
||
I just 3D printed an small housing the avoid touching the high voltage Geiger Mueller tube.
|
||
`Counter Tube Case <https://www.thingiverse.com/thing:5425224>`__
|
||
(The tube should not be in direct sunlight. So maybe you will need another case.)
|
||
|
||
|
||
Configuartion:
|
||
---------------
|
||
|
||
The block :doc:`/components/sensor/pulse_counter` will count the radation events per minute.
|
||
With the found specs of the tube you will be able to calculate the radiation in μSv/h.
|
||
|
||
It's just the counts per minute (CPM) times the factor of your Geiger Mueller tube you're using. It should be the J305ß, which comes with the PCB.
|
||
(To make sure - check your printing on the tube)
|
||
|
||
μSv/h = (CPM - Tube noise) * Factor
|
||
According to the video of `Andreas Spiess <https://www.youtube.com/watch?v=K28Az3-gV7E>`__ the tube should have about 12 CPM as background noise.
|
||
|
||
.. note::
|
||
|
||
The current version of the pack comes with the J305ß Geiger tube which detectes Beta and Gamma radiation. Specifications:
|
||
Manufacturer: North Optic Radiation Detection: β, γ Length: 111mm Diameter: 11mm Recommended Voltage: 350V Plateau Voltage: 360-440V
|
||
Sensitivy γ (60Co): 65cps/(μR/s)
|
||
Sensitivy γ (equivalent Sievert): 108cpm / (μSv/h)
|
||
Max cpm: 30000
|
||
cps/mR/h: 18
|
||
cpm/m/h: 1080
|
||
cpm/μSv/h: 123.147092360319
|
||
Factor: 0.00812037037037
|
||
|
||
|
||
`Source: opengeiger.de/LibeliumDoku.pdf <http://www.opengeiger.de/LibeliumDoku.pdf>`__.
|
||
|
||
|
||
.. code-block:: yaml
|
||
|
||
sensor:
|
||
- platform: pulse_counter
|
||
pin: 34
|
||
name: "Radiation"
|
||
unit_of_measurement: 'μSv/h'
|
||
count_mode:
|
||
rising_edge: DISABLE
|
||
falling_edge: INCREMENT
|
||
filters:
|
||
- offset: -12.0 # J305ß Geiger Mueller tube background noise 0.2 pulses / sec x 60 sec = 12 CPM (Counts per Minute)
|
||
- multiply: 0.00812037037037 # Factor: 0.00812037037037
|
||
|
||
|
||
See Also
|
||
--------
|
||
|
||
- :doc:`/components/sensor/pulse_counter`
|
||
- :ghedit:`Edit`
|