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Last modified by Edwin Chen on 2025/06/26 11:53
From version 13.3
edited by Edwin Chen
on 2025/06/25 09:22
Change comment: There is no comment for this version
To version 13.1
edited by Edwin Chen
on 2022/12/28 14:54
Change comment: There is no comment for this version

Summary

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... ... @@ -4,17 +4,15 @@
4 4  
5 5  
6 6  
7 -= 1. Overview =
7 += Overview =
8 8  
9 -
10 10  This URL introduce different methods to detect the water / liquid level.
11 11  
12 12  
13 -= 2. Flow switch =
12 += Flow switch =
14 14  
15 -== 2.1 How it works ==
14 +== How it works ==
16 16  
17 -
18 18  Below is an example of flow switch. and product link:
19 19  
20 20  [[https:~~/~~/www.amazon.com/Float-Switch-Septic-System-Sump/dp/B0064BHEVM/ref=sr_1_5?crid=2PCMSD63FBP42&keywords=float%2Bswitch&qid=1671230997&refinements=p_72%3A1248909011&rnid=1248907011&s=hi&sprefix=float%2Bswitch%2Caps%2C155&sr=1-5&th=1 >>https://www.amazon.com/Float-Switch-Septic-System-Sump/dp/B0064BHEVM/ref=sr_1_5?crid=2PCMSD63FBP42&keywords=float%2Bswitch&qid=1671230997&refinements=p_72%3A1248909011&rnid=1248907011&s=hi&sprefix=float%2Bswitch%2Caps%2C155&sr=1-5&th=1]]
... ... @@ -21,7 +21,6 @@
21 21  
22 22  [[image:image-20221217164157-1.png||height="329" width="486"]]
23 23  
24 -
25 25  [[image:image-20221217164432-3.png||height="282" width="501"]][[image:image-20221217164337-2.png||height="279" width="431"]]
26 26  
27 27  The switch will switch on/off to show if the water / liquid has dedicate level.
... ... @@ -32,18 +32,18 @@
32 32  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.5DigitalInterrupt >>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.5DigitalInterrupt]]
33 33  
34 34  
35 -== 2.2 Advantage & Disadvantage ==
32 +== Advantage & Disadvantage ==
36 36  
34 +**Advantage** : Reliable , Easy to install & Immue to different environment.
37 37  
38 -(% style="color:blue" %)**Advantage**(%%) : Reliable , Easy to install & Immue to different environment.
36 +**Disadvantage**: Only be able to detect one speicify level. Not able to detect full range of water.
39 39  
40 -(% style="color:red" %)**Disadvantage**(%%): Only be able to detect one speicify level. Not able to detect full range of water.
41 41  
42 42  
43 -= 3. Ultrasonic Sensor =
44 44  
45 -== 3.1 How it works? ==
41 += Ultrasonic Sensor =
46 46  
43 +== How it works? ==
47 47  
48 48  Such as [[LDDS75>>https://www.dragino.com/products/distance-level-sensor/item/161-ldds75.html]] / [[LDDS45>>https://www.dragino.com/products/distance-level-sensor/item/191-ldds45.html]]. They are using ultrasonic technologic to detect the distance between the probe and a flat object such as water level.
49 49  
... ... @@ -59,34 +59,31 @@
59 59  An important notice, if there are moisture accumulated in the sense area of Ultrasonic Probe of LDDS75/LDDS45. the reading will become invalid.
60 60  
61 61  
62 -== 3.2 Advantage & Disadvantage ==
59 +== Advantage & Disadvantage ==
63 63  
61 +**Advantage** : Able to detect the level. Good Accurancy.
64 64  
65 -(% style="color:blue" %)**Advantage**(%%) :  Able to detect the level. Good Accurancy.
63 +**Disadvanage**: Wrong reading when probe is block by moisture or other stuff. Affect by temperature.
66 66  
67 -(% style="color:red" %)**Disadvanage**(%%): Wrong reading when probe is block by moisture or other stuff. Affect by temperature.
68 68  
66 += Pressure Sensor =
69 69  
70 -= 4. Pressure Sensor =
68 +== How it works? ==
71 71  
72 -== 4.1 How it works? ==
73 -
74 -
75 75  Pressure Sensor such as [[PS-LB>>https://www.dropbox.com/sh/eshhuk347xi1ce4/AAA4LUmYc2ITayfJUVsqK3wya?dl=0]] measures the pressure of the air / gas / liquid so can calcualte the liquid level.
76 76  
77 -there are two types , (% style="color:blue" %)**Thread type** (%%)and (% style="color:blue" %)**Immersion type**(%%). as below:
72 +there are two types , **Thread type** and **Immersion type**. as below:
78 78  
79 79  
80 80  [[image:image-20221228143643-1.png||height="223" width="312"]] [[image:image-20221228144206-2.png||height="256" width="335"]]
81 81  
82 82  
83 -== 4.2 Advantage & Disadvantage ==
78 +== Advantage & Disadvantage ==
84 84  
80 +**Advantage** : Able to detect air / gas / liquid pressure level. Immue to factors such as moisture / blocking. etc. Flexible for installation for
85 85  
86 -(% style="color:blue" %)**Advantage**(%%) :  Able to detect air / gas / liquid pressure level. Immue to factors such as moisture / blocking. etc. Flexible for installation for
82 +**Disadvanage**:
87 87  
88 -(% style="color:red" %)**Disadvanage **(%%): When use Thread Type sensor, the installation will be a challenge and
89 89  
90 90  
91 -
92 92