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Last modified by Mengting Qiu on 2024/09/05 17:35
From version 84.15
edited by Xiaoling
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To version 84.11
edited by Xiaoling
on 2023/09/11 15:14
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16 16  == 1.1 What is DDS20-NB NB-IoT Ultrasonic liquid level Sensor ==
17 17  
18 18  
19 -The Dragino DDS20-NB is a (% style="color:blue" %)**NB-IoT 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 IoT platform via NB-IoT network.
19 +The Dragino DDS20-NB is a **NB-IoT Ultrasonic liquid level sensor** for Internet of Things solution. It uses **none-contact method **to measure the **height of liquid** in a container without opening the container, and send IoT platform via NB-IoT network.
20 20  
21 21  The DDS20-NB 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. 
22 22  
23 -DDS20-NB uses (% style="color:blue" %)**ultrasonic sensing technology**(%%) for distance measurement. DDS20-NB is of high accuracy to measure various liquid such as: (% style="color:blue" %)**toxic substances**, **strong acids**, **strong alkalis**(%%) and (% style="color:blue" %)**various pure liquids**(%%) in high-temperature and high-pressure airtight containers.
23 +DDS20-NB uses **ultrasonic sensing technology** for distance measurement. DDS20-NB is of high accuracy to measure various liquid such as: **toxic substances**, **strong acids**, **strong alkalis** and **various pure liquids** in high-temperature and high-pressure airtight containers.
24 24  
25 -DDS20-NB supports different uplink methods including (% style="color:blue" %)**MQTT, MQTTs, UDP & TCP**(%%) for different application requirement, and support uplinks to various IoT Servers.
25 +DDS20-NB supports different uplink methods including **MQTT, MQTTs, UDP & TCP** for different application requirement, and support uplinks to various IoT Servers.
26 26  
27 -DDS20-NB (% style="color:blue" %)**supports BLE configure **(%%)and(% style="color:blue" %)** OTA update**(%%) which make user easy to use.
27 +DDS20-NB **supports BLE configure **and** OTA update** which make user easy to use.
28 28  
29 -DDS20-NB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long-term use up to severa years.
29 +DDS20-NB is powered by **8500mAh Li-SOCI2 battery**, it is designed for long-term use up to severa years.
30 30  
31 31  DDS20-NB has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.
32 32  
... ... @@ -295,25 +295,8 @@
295 295  (% style="display:none" %)
296 296  
297 297  
298 -== 1.12 Mechanical ==
298 += 2. Use S31-NB to communicate with IoT Server =
299 299  
300 -
301 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143884058-338.png?rev=1.1||alt="1675143884058-338.png"]]
302 -
303 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143899218-599.png?rev=1.1||alt="1675143899218-599.png"]]
304 -
305 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143909447-639.png?rev=1.1||alt="1675143909447-639.png"]]
306 -
307 -
308 -(% style="color:blue" %)**Probe Mechanical:**
309 -
310 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-1.png?rev=1.1||alt="image-20220615090910-1.png"]]
311 -
312 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-2.png?rev=1.1||alt="image-20220615090910-2.png"]]
313 -
314 -
315 -= 2. Use DDS20-NB to communicate with IoT Server =
316 -
317 317  == 2.1 Send data to IoT server via NB-IoT network ==
318 318  
319 319  
... ... @@ -466,166 +466,10 @@
466 466  
467 467  (% style="color:#4472c4" %)**field1=27.9&field2=49.9&field3=3.23&field4=28**
468 468  
469 -== 2.3  ​Uplink Payload ==
470 470  
453 +== 2.3 Test Uplink and Change Update Interval ==
471 471  
472 -(((
473 -DDS20-LB will uplink payload via LoRaWAN with below payload format: 
474 -)))
475 475  
476 -(((
477 -Uplink payload includes in total 8 bytes.
478 -)))
479 -
480 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
481 -|=(% style="width: 95px; background-color:#D9E2F3;color:#0070C0" %)(% style="display:none" %) (%%)Size(bytes)|=(% style="width: 61px; background-color:#D9E2F3;color:#0070C0" %)2|=(% style="background-color:#D9E2F3;color:#0070C0" %)2|=(% style="background-color:#D9E2F3;color:#0070C0" %)1|=(% style="background-color:#D9E2F3;color:#0070C0" %)2|=(% style="background-color:#D9E2F3;color:#0070C0" %)1
482 -|(% style="width:95px" %)Value|(% style="width:61px" %)[[BAT>>||anchor="H2.3.2A0BatteryInfo"]]|(((
483 -[[Distance>>||anchor="H2.3.3A0Distance"]]
484 -(unit: mm)
485 -)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0InterruptPin"]]|(((
486 -[[Temperature (Optional)>>||anchor="H2.3.5A0DS18B20Temperaturesensor"]]
487 -)))|[[Sensor Flag>>||anchor="H2.3.6A0SensorFlag"]]
488 -
489 -[[image:微信截图_20230702135733.png||height="215" width="964"]]
490 -
491 -
492 -=== 2.3.1 Device Status, FPORT~=5 ===
493 -
494 -
495 -(((
496 -Users can use the downlink command(**0x26 01**) to ask DDS20-LB to send device configure detail, include device configure status. DDS20-LB will uplink a payload via FPort=5 to server.
497 -
498 -The Payload format is as below.
499 -)))
500 -
501 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:490px" %)
502 -|=(% colspan="6" style="background-color:#D9E2F3;color:#0070C0" %)Device Status (FPORT=5)
503 -|(% style="width:60px" %)**Size(bytes)**|(% style="width:80px" %)**1**|(% style="width:140px" %)**2**|(% style="width:140px" %)**1**|(% style="width:70px" %)**1**|(% style="width:70px" %)**2**
504 -|(% style="width:94px" %)**Value**|(% style="width:68px" %)Sensor Model|(% style="width:80px" %)Firmware Version|(% style="width:86px" %)Frequency Band|(% style="width:61px" %)Sub-band|(% style="width:61px" %)BAT
505 -
506 -[[image:DDS20.png||height="241" width="1336"]]
507 -
508 -
509 -(% style="color:#037691" %)**Sensor Model**(%%)**:** For DDS20-LB, this value is 0x29
510 -
511 -(% style="color:#037691" %)**Firmware Version**(%%)**:** 0x0100, Means: v1.0.0 version
512 -
513 -(% style="color:#037691" %)**Frequency Band**(%%)**:**
514 -
515 -0x01: EU868
516 -
517 -0x02: US915
518 -
519 -0x03: IN865
520 -
521 -0x04: AU915
522 -
523 -0x05: KZ865
524 -
525 -0x06: RU864
526 -
527 -0x07: AS923
528 -
529 -0x08: AS923-1
530 -
531 -0x09: AS923-2
532 -
533 -0x0a: AS923-3
534 -
535 -0x0b: CN470
536 -
537 -0x0c: EU433
538 -
539 -0x0d: KR920
540 -
541 -0x0e: MA869
542 -
543 -
544 -(% style="color:#037691" %)**Sub-Band**(%%)**:**
545 -
546 -AU915 and US915: value 0x00 ~~ 0x08
547 -
548 -CN470: value 0x0B ~~ 0x0C
549 -
550 -Other Bands: Always 0x00
551 -
552 -
553 -(% style="color:#037691" %)**Battery Info:**
554 -
555 -Check the battery voltage.
556 -
557 -Ex1: 0x0B45 = 2885mV
558 -
559 -Ex2: 0x0B49 = 2889mV
560 -
561 -
562 -=== 2.3.2  Battery Info ===
563 -
564 -
565 -Check the battery voltage for DDS20-LB.
566 -
567 -Ex1: 0x0B45 = 2885mV
568 -
569 -Ex2: 0x0B49 = 2889mV
570 -
571 -
572 -=== 2.3.3  Distance ===
573 -
574 -
575 -(((
576 -Get the distance. Flat object range 20mm - 2000mm.
577 -)))
578 -
579 -(((
580 -For example, if the data you get from the register is **0x06 0x05**, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** **
581 -
582 -(% style="color:blue" %)**0605(H) = 1541 (D) = 1541 mm.**
583 -)))
584 -
585 -* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
586 -
587 -* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
588 -
589 -=== 2.3.4  Interrupt Pin ===
590 -
591 -
592 -This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3.2SetInterruptMode"]] for the hardware and software set up.
593 -
594 -**Example:**
595 -
596 -0x00: Normal uplink packet.
597 -
598 -0x01: Interrupt Uplink Packet.
599 -
600 -
601 -=== 2.3.5  DS18B20 Temperature sensor ===
602 -
603 -
604 -This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
605 -
606 -**Example**:
607 -
608 -If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
609 -
610 -If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
611 -
612 -
613 -=== 2.3.6  Sensor Flag ===
614 -
615 -
616 -(((
617 -0x01: Detect Ultrasonic Sensor
618 -)))
619 -
620 -(((
621 -0x00: No Ultrasonic Sensor
622 -
623 -
624 -)))
625 -
626 -== 2.4 Test Uplink and Change Update Interval ==
627 -
628 -
629 629  By default, Sensor will send uplinks (% style="color:blue" %)**every 2 hours**(%%) & AT+NOUD=8
630 630  
631 631  User can use below commands to change the (% style="color:blue" %)**uplink interval**.
... ... @@ -635,7 +635,7 @@
635 635  User can also push the button for more than 1 seconds to activate an uplink.
636 636  
637 637  
638 -== 2.5 Multi-Samplings and One uplink ==
465 +== 2.4 Multi-Samplings and One uplink ==
639 639  
640 640  
641 641  To save battery life, DDS20-NB will sample temperature & humidity data every 15 minutes and send one uplink every 2 hours. So each uplink it will include 8 stored data + 1 real-time data. They are defined by:
... ... @@ -649,7 +649,7 @@
649 649  [[image:1692424376354-959.png]]
650 650  
651 651  
652 -== 2.6 Trggier an uplink by external interrupt ==
479 +== 2.5 Trggier an uplink by external interrupt ==
653 653  
654 654  
655 655  DDS20-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.