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new helper module dewpoint

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git-svn-id: https://fhem.svn.sourceforge.net/svnroot/fhem/trunk/fhem@1436 2b470e98-0d58-463d-a4d8-8e2adae1ed80
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wherzig
2012-04-11 20:03:04 +00:00
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@@ -156,6 +156,7 @@
<a href="#at">at</a> &nbsp;
<a href="#autocreate">autocreate</a> &nbsp;
<a href="#average">average</a> &nbsp;
<a href="#dewpoint">dewpoint</a> &nbsp;
<a href="#dummy">dummy</a> &nbsp;
<a href="#dumpdef">dumpdef</a> &nbsp;
<a href="#holiday">holiday</a> &nbsp;
@@ -8411,6 +8412,130 @@ KlikAanKlikUit, NEXA, CHACON, HomeEasy UK. <br> You need to define an RFXtrx433
</ul>
<a name="dewpoint"></a>
<h3>dewpoint</h3>
<ul>
Dewpoint calculations. Offers three different ways to use dewpoint: <br>
<ul>
<li><b>dewpoint</b><br>
Compute additional event dewpoint from a sensor offering temperature and humidity.</li>
<li><b>fan</b><br>
Generate a event to turn a fan on if the outside air has less water than the inside.</li>
<li><b>alarm</b><br>
Generate a mold alarm if a reference temperature is lower that the current dewpoint.</li>
<br>
</ul>
<a name="dewpointdefine"></a>
<b>Define</b>
<ul>
<code>define &lt;name&gt; dewpoint dewpoint &lt;devicename-regex&gt; [&lt;temp_name&gt; &lt;hum_name&gt; &lt;new_name&gt;]</code><br>
<br>
<ul>
Calculates dewpoint for device &lt;devicename-regex&gt; from temperature and humidity
and write it to a new reading named dewpoint.
If optional &lt;temp_name&gt;, &lt;hum_name&gt; and &lt;new_name&gt; is specified
then read temperature from reading &lt;temp_name&gt;, humidity from reading &lt;hum_name&gt;
and write the calculated dewpoint to reading &lt;new_name&gt;.<br>
If &lt;temp_name&gt; is T then use temperature from state T: H:, add &lt;new_name&gt; to the state.
</ul>
<br>
Example:<PRE>
# Compute the dewpoint for the temperature/humidity
# events of the temp1 device and generate reading dewpoint.
define dew_temp1 dewpoint dewpoint temp1
define dew_temp1 dewpoint dewpoint temp1 temperature humidity dewpoint
# Compute the dewpoint for the temperature/humidity
# events of all devices offering temperature and humidity
# and generate reading dewpoint.
define dew_all dewpoint dewpoint .*
define dew_all dewpoint dewpoint .* temperature humidity dewpoint
# Compute the dewpoint for the temperature/humidity
# events of the device Aussen_1 offering temperature and humidity
# and insert is into STATE.
define dew_state dewpoint dewpoint Aussen_1 T H D
# Compute the dewpoint for the temperature/humidity
# events of all devices offering temperature and humidity
# and insert the result into the STATE.
# Example STATE: "T: 10 H: 62.5" will change to
# "T: 10 H: 62.5 D: 3.2"
define dew_state dewpoint dewpoint .* T H D
</PRE>
</ul>
<ul>
<code>define &lt;name&gt; dewpoint fan &lt;devicename-regex&gt; &lt;devicename-outside&gt; &lt;min-temp&gt;</code><br>
<br>
<ul>
May be used to turn an fan on or off if the outside air has less water.
<ul>
<li>
Generate event "fan: on" if dewpoint of &lt;devicename-outside&gt; is lower
than dewpoint of &lt;devicename&gt; and temperature of &lt;devicename-outside&gt; is &gt;= min-temp
and reading "fan" was not already "on".</li>
<li>Generate event "fan: off": else and if reading "fan" was not already "off".</li>
</ul>
</ul>
<br>
Example:<PRE>
# Generate event "fan: on" when dewpoint of Aussen_1 is first
# time lower than Keller_Raum1 and outside temperature is &gt;= 0
# and change it to "fan: off" is this condition changes.
define dew_fan1 dewpoint fan Keller_Raum1 Aussen_1 0
</PRE>
</ul>
<ul>
<code>define &lt;name&gt; dewpoint alarm &lt;devicename-regex&gt; &lt;devicename-reference&gt; &lt;diff-temp&gt;</code><br>
<br>
<ul>
Generate a mold alarm if a reference temperature is lower that the current dewpoint.
<ul>
<li>
Generate reading/event "alarm: on" if temperature of &lt;devicename-reference&gt; - &lt;diff-temp&gt; is lower
than dewpoint of &lt;devicename&gt; and reading "alarm" was not already "on".</li>
<li>Generate reading/event "alarm: off" if temperature of &lt;devicename-reference&gt; - &lt;diff-temp&gt; is higher than dewpoint of &lt;devicename&gt; and reading "alarm" was not already "off".</li>
</ul>
</ul>
<br>
Example:<PRE>
# Using a wall temperature sensor (wallsensor) and a temp/hum sensor
# (roomsensor) to alarm if the temperature of the wall is lower than
# the dewpoint of the air. In this case the water of the air will
# condense on the wall because the wall is cold.
define dew_alarm1 dewpoint alarm roomsensor wallsensor 0
# If you do not have a temperature sensor in/on the wall, you may also
# compare the rooms dewpoint to the temperature of the same or another
# inside sensor. Alarm is temperature is 5 degrees colder than the
# inside dewpointinside.
define dev_alarm2 dewpoint alarm roomsensor roomsensor 5
</PRE>
</ul>
<a name="dewpointset"></a>
<b>Set</b> <ul>N/A</ul><br>
<a name="dewpointget"></a>
<b>Get</b> <ul>N/A</ul><br>
<a name="dewpointattr"></a>
<b>Attributes</b>
<ul>
<li><a href="#disable">disable</a></li>
</ul>
</ul>
<a name="holiday"></a>
<h3>holiday</h3>
<ul>