Changes for page Sensor Module

Last modified by Heimir Thordarson on 2026/07/05 12:56

From version 41.3
edited by Heimir Thordarson
on 2026/01/26 17:43
Change comment: There is no comment for this version
To version 39.1
edited by Heimir Thordarson
on 2026/01/26 17:31
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -95,29 +95,7 @@
95 95  {{/mathjax}}
96 96  )))
97 97  
98 -where:
99 -
100 -* {{mathjax}}\(\beta\){{/mathjax}} = material constant that defines the steepness of its resistance-temperature curve between two temperature points, usually 25/85 degrees celsius. In this case it is 3694 //**K.**//
98 +* {{mathjax}}\(\beta\){{/mathjax}} = material constant that defines the steepness of its resistance-temperature curve between two temperature points, usually 25/85 degrees celsius. In this case it is 3694 //**K**//
101 101  * {{mathjax}}\(T_0\){{/mathjax}} = The test temperature at which the thermistor is 10k {{mathjax}}\(\Omega\){{/mathjax}}, which in this case is 25 degrees celsius.
102 102  * {{mathjax}}\(R_0\){{/mathjax}} = The resistance of the thermistor when it is 25 degrees celsius.
103 103  * {{mathjax}}\(R_T\){{/mathjax}} = The current resistance of the thermistor.
104 -
105 -==== Filtering ====
106 -
107 -Considering that the sensor can only promise a reaction time of 5 seconds when in water, it can be assumed that a heavy filter will not add any problematic latencies. To ensure a low cost, the filter uses common components which will filter any noise above the inverter switching noise.
108 -
109 -(% style="font-size: 1.5em;" %)
110 -(((
111 -{{mathjax}}
112 -$$
113 -F_c = \frac{1}{2 \pi R C}
114 -$$
115 -{{/mathjax}}
116 -)))
117 -
118 -Where:
119 -
120 -* {{mathjax}}\(F_c\){{/mathjax}} = Cut-off frequency of the filter. Any noise with a frequency above this will be filtered out.
121 -* {{mathjax}}\(R\)
122 -{{/mathjax}} = Resistance of the resistor in low-pass filter.
123 -*