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Last modified by Mengting Qiu on 2023/12/14 11:15
From version 75.5
edited by Xiaoling
on 2023/06/13 13:43
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To version 77.2
edited by Xiaoling
on 2023/06/13 14:01
Change comment: There is no comment for this version

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22 22  == 1.1 What is LoRaWAN Ultrasonic liquid level Sensor ==
23 23  
24 24  
25 -The Dragino DDS20-LB is a (% style="color:blue" %)**LoRaWAN Ultrasonic liquid level sensor**(%%) for Internet of Things solution. It uses (% style="color:blue" %)**none-contact method **(%%)to measure the height of liquid in a container without opening the container, and send the value via LoRaWAN network to IoT Server
25 +The Dragino DDS20-LB is a (% style="color:blue" %)**LoRaWAN Ultrasonic liquid level sensor**(%%) for Internet of Things solution. It uses (% style="color:blue" %)**none-contact method **(%%)to measure the (% style="color:blue" %)**height of liquid**(%%) in a container without opening the container, and send the value via LoRaWAN network to IoT Server.
26 26  
27 -The DDS20-LB sensor is installed directly below the container to detect the height of the liquid level. User doesn't need to open a hole on the container to be tested. The (% style="color:blue" %)**none-contact measurement makes the measurement safety, easier and possible for some strict situation**. 
27 +The DDS20-LB sensor is installed directly below the container to detect the height of the liquid level. User doesn't need to open a hole on the container to be tested. The none-contact measurement makes the measurement safety, easier and possible for some strict situation. 
28 28  
29 29  DDS20-LB uses (% style="color:blue" %)**ultrasonic sensing technology**(%%) for distance measurement. DDS20-LB is of high accuracy to measure various liquid such as: (% style="color:blue" %)**toxic substances**(%%), (% style="color:blue" %)**strong acids**(%%), (% style="color:blue" %)**strong alkalis**(%%) and (% style="color:blue" %)**various pure liquids**(%%) in high-temperature and high-pressure airtight containers.
30 30  
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36 36  
37 37  Each DDS20-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
38 38  
39 -[[image:image-20230613102459-3.png||height="476" width="855"]]
39 +[[image:image-20230613140115-3.png||height="453" width="800"]]
40 40  
41 41  
42 42  == 1.2 ​Features ==
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57 57  * IP66 Waterproof Enclosure
58 58  * 8500mAh Battery for long term use
59 59  
60 -
61 61  == 1.3 Specification ==
62 62  
63 63  
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86 86  * Sleep Mode: 5uA @ 3.3v
87 87  * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
88 88  
89 -
90 90  == 1.4 Rated environmental conditions ==
91 91  
92 92  
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141 141  * Sewer
142 142  * Bottom water level monitoring
143 143  
144 -
145 145  == 1.7 Sleep mode and working mode ==
146 146  
147 147  
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169 169  )))
170 170  |(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.
171 171  
172 -
173 173  == 1.9 BLE connection ==
174 174  
175 175  
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223 223  
224 224  The LPS8v2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.
225 225  
226 -[[image:image-20230613102426-2.png||height="476" width="855"]](% style="display:none" %)
222 +[[image:image-20230613140140-4.png||height="453" width="800"]](% style="display:none" %)
227 227  
228 228  
229 229  (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS45-LB.
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318 318  * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
319 319  * If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
320 320  
321 -
322 322  === 2.3.3  Interrupt Pin ===
323 323  
324 324  
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509 509  
510 510  * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
511 511  
512 -
513 513  == 3.2 General Commands ==
514 514  
515 515  
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572 572  Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds 
573 573  )))
574 574  
575 -
576 576  === 3.3.2 Set Interrupt Mode ===
577 577  
578 578  
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607 607  
608 608  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
609 609  
610 -
611 611  = 4. Battery & Power Consumption =
612 612  
613 613  
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636 636  
637 637  * Update through UART TTL interface: **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
638 638  
639 -
640 640  = 6. FAQ =
641 641  
642 642  == 6.1  What is the frequency plan for DDS45-LB? ==
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719 719  
720 720  * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
721 721  
722 -
723 723  = 9. ​Packing Info =
724 724  
725 725  
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737 737  
738 738  * Weight / pcs : g
739 739  
740 -
741 741  = 10. Support =
742 742  
743 743  
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