Wiki source code of Different methods to detect water and liquid level
Version 12.1 by Edwin Chen on 2022/12/28 14:42
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| 1 | **~ Table of Contents：** | ||
| 2 | |||
| 3 | {{toc/}} | ||
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| 7 | = Overview = | ||
| 8 | |||
| 9 | This URL introduce different methods to detect the water / liquid level. | ||
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| 11 | |||
| 12 | = Flow switch = | ||
| 13 | |||
| 14 | == How it works == | ||
| 15 | |||
| 16 | Below is an example of flow switch. and product link: | ||
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| 18 | [[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]] | ||
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| 20 | [[image:image-20221217164157-1.png||height="329" width="486"]] | ||
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| 22 | [[image:image-20221217164432-3.png||height="282" width="501"]][[image:image-20221217164337-2.png||height="279" width="431"]] | ||
| 23 | |||
| 24 | The switch will switch on/off to show if the water / liquid has dedicate level. | ||
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| 26 | |||
| 27 | To use such switch with Dragino Products, use can connect it to LSN50v2 use the same way as a door switch. See reference link: | ||
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| 29 | [[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]] | ||
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| 31 | |||
| 32 | == Advantage & Disadvantage == | ||
| 33 | |||
| 34 | **Advantage** : Reliable , Easy to install & Immue to different environment. | ||
| 35 | |||
| 36 | **Disadvantage**: Only be able to detect one speicify level. Not able to detect full range of water. | ||
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| 40 | |||
| 41 | = Ultrasonic Sensor = | ||
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| 43 | == How it works? == | ||
| 44 | |||
| 45 | 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. | ||
| 46 | |||
| 47 | Below is photo and URL shows how Ultrasonic Sensor works to detect Water Level | ||
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| 49 | [[https:~~/~~/www.electricalvolt.com/2022/06/ultrasonic-level-transmitter-working/ >>https://www.electricalvolt.com/2022/06/ultrasonic-level-transmitter-working/]] | ||
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| 51 | [[image:image-20221217170756-1.png||height="465" width="539"]] | ||
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| 54 | When choose the ultrasonic sensor, we need to check the measure range , blind spot and angel to fit the tank. | ||
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| 56 | An important notice, if there are moisture accumulated in the sense area of Ultrasonic Probe of LDDS75/LDDS45. the reading will become invalid. | ||
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| 58 | |||
| 59 | == Advantage & Disadvantage == | ||
| 60 | |||
| 61 | **Advantage** : Able to detect the level. Good Accurancy. | ||
| 62 | |||
| 63 | **Disadvanage**: Wrong reading when probe is block by moisture or other stuff. Affect by temperature. | ||
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