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... ... @@ -100,144 +100,64 @@ 100 100 * STOP Mode: 10uA @ 3.3v 101 101 * Max transmit power: 350mA@3.3v 102 102 103 -== 1.4 SuitableContainer& Liquid==103 +== 1.4 Rated environmental conditions == 104 104 105 105 106 -* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc. 107 -* Container shape is regular, and surface is smooth. 108 -* Container Thickness: 109 -** Pure metal material. 2~~8mm, best is 3~~5mm 110 -** Pure non metal material: <10 mm 111 -* Pure liquid without irregular deposition. 106 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %) 107 +|(% style="background-color:#4f81bd; color:white; width:163px" %)**Item**|(% style="background-color:#4f81bd; color:white; width:90px" %)**Minimum value**|(% style="background-color:#4f81bd; color:white; width:70px" %)**Typical value**|(% style="background-color:#4f81bd; color:white; width:87px" %)**Maximum value**|(% style="background-color:#4f81bd; color:white; width:40px" %)**Unit**|(% style="background-color:#4f81bd; color:white; width:50px" %)**Remarks** 108 +|(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %) 109 +|(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1) 110 +|(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %) 111 +|(% style="width:174px" %)Working humidity|(% style="width:86px" %)((( 112 + 112 112 113 -(% style="display:none" %) 114 + 115 +)))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1) 114 114 115 -== 1.5 Install DDS20-NB == 116 - 117 - 118 -(% style="color:blue" %)**Step 1**(%%): ** Choose the installation point.** 119 - 120 -DDS20-NB (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position. 121 - 122 -[[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-20220615091045-3.png?rev=1.1||alt="image-20220615091045-3.png"]] 123 - 124 - 125 125 ((( 126 -(% style="color:blue" %)**Step 2**(%%): **Polish the installation point.** 127 -))) 118 +(% style="color:red" %)**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing); ** 128 128 129 -((( 130 -For Metal Surface with paint, it is important to polish the surface, first use crude sand paper to polish the paint level , then use exquisite sand paper to polish the metal level to make it shine & smooth. 131 -))) 120 +(% style="color:red" %)** b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)** 132 132 133 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS20-LB_LoRaWAN_Ultrasonic_Liquid_Level_Sensor_User_Manual/WebHome/image-20230613143052-5.png?rev=1.1||alt="image-20230613143052-5.png"]] 134 - 135 - 136 -No polish needed if the container is shine metal surface without paint or non-metal container. 137 - 138 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS20-LB_LoRaWAN_Ultrasonic_Liquid_Level_Sensor_User_Manual/WebHome/image-20230613143125-6.png?rev=1.1||alt="image-20230613143125-6.png"]] 139 - 140 - 141 -((( 142 -(% style="color:blue" %)**Step3: **(%%)**Test the installation point.** 122 + 143 143 ))) 144 144 145 -((( 146 -Power on DDS20-NB, check if the blue LED is on, If the blue LED is on, means the sensor works. Then put ultrasonic coupling paste on the sensor and put it tightly on the installation point. 147 -))) 125 +== 1.5 Effective measurement range Reference beam pattern == 148 148 149 -((( 150 -It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-NB won't detect the liquid level. 151 -))) 152 152 153 -((( 154 -After paste the DDS20-NB well, power on DDS20-NB. In the first 30 seconds of booting, device will check the sensors status and BLUE LED will show the status as below. After 30 seconds, BLUE LED will be off to save battery life. 155 -))) 128 +(% style="color:blue" %)**1. The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.** 156 156 130 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852253176-749.png?rev=1.1||alt="1654852253176-749.png"]] 157 157 158 -((( 159 -(% style="color:blue" %)**LED Status:** 160 -))) 161 161 162 -* ((( 163 -**Onboard LED**: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well. 164 -))) 133 +(% style="color:blue" %)**2. The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.** 165 165 166 -* ((( 167 -(% style="color:blue" %)**BLUE LED**(% style="color:red" %)** always ON**(%%): Sensor is power on but doesn't detect liquid. There is problem in installation point. 168 -))) 169 -* ((( 170 -(% style="color:blue" %)**BLUE LED**(% style="color:red" %)** slowly blinking**(%%): Sensor detects Liquid Level, The installation point is good. 171 -))) 135 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852175653-550.png?rev=1.1||alt="1654852175653-550.png"]] 172 172 173 -((( 174 -DDS20-NB will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that. 175 -))) 176 176 177 - 178 -((( 179 -(% style="color:red" %)**Note :**(%%)** (% style="color:blue" %)Ultrasonic coupling paste(%%)**(% style="color:blue" %) (%%) is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally. 180 -))) 181 - 182 - 183 -((( 184 -(% style="color:blue" %)**Step4: **(%%)**Install use Epoxy ab glue.** 185 -))) 186 - 187 -((( 188 -Prepare Eproxy AB glue. 189 -))) 190 - 191 -((( 192 -Put Eproxy AB glue in the sensor and press it hard on the container installation point. 193 -))) 194 - 195 -((( 196 -Reset DDS20-NB and see if the BLUE LED is slowly blinking. 197 -))) 198 - 199 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS20-LB_LoRaWAN_Ultrasonic_Liquid_Level_Sensor_User_Manual/WebHome/image-20230809172509-1.png?rev=1.1||alt="image-20230809172509-1.png"]] 200 - 201 -((( 202 -(% style="color:red" %)**Note :**(% style="color:red; display:none" %)** ** 203 - 204 -(% style="color:red" %)**1:**(%%)** (% style="color:blue" %)Eproxy AB glue(%%)** needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position. 205 -))) 206 - 207 -((( 208 -(% style="color:red" %)**2:**(%%)** (% style="color:blue" %)Eproxy AB glue(%%)** is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally. 209 -))) 210 - 211 - 212 212 == 1.6 Applications == 213 213 214 214 215 -* Smart liquid control solution 141 +* Horizontal distance measurement 142 +* Liquid level measurement 143 +* Parking management system 144 +* Object proximity and presence detection 145 +* Intelligent trash can management system 146 +* Robot obstacle avoidance 147 +* Automatic control 148 +* Sewer 149 +* Bottom water level monitoring 216 216 217 -* Smart liquefied gas solution 218 218 219 -== 1.7 Precautions==152 +== 1.7 Sleep mode and working mode == 220 220 221 221 222 -* At room temperature, containers of different materials, such as steel, glass, iron, ceramics, non-foamed plastics and other dense materials, have different detection blind areas and detection limit heights. 223 - 224 -* For containers of the same material at room temperature, the detection blind zone and detection limit height are also different for the thickness of the container. 225 - 226 -* When the detected liquid level exceeds the effective detection value of the sensor, and the liquid level of the liquid to be measured shakes or tilts, the detected liquid height is unstable. 227 - 228 -(% style="display:none" %) 229 - 230 - 231 - 232 -== 1.8 Sleep mode and working mode == 233 - 234 - 235 235 (% style="color:blue" %)**Deep Sleep Mode: **(%%)Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life. 236 236 237 237 (% style="color:blue" %)**Working Mode:** (%%)In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode. 238 238 239 239 240 -== 1. 9Button & LEDs ==160 +== 1.8 Button & LEDs == 241 241 242 242 243 243 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]] ... ... @@ -256,10 +256,10 @@ 256 256 ))) 257 257 |(% 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. 258 258 259 -== 1. 10BLE connection ==179 +== 1.9 BLE connection == 260 260 261 261 262 -DDS 20-NB support BLE remote configure and firmware update.182 +DDS45-NB support BLE remote configure and firmware update. 263 263 264 264 265 265 BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case: ... ... @@ -271,19 +271,19 @@ 271 271 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode. 272 272 273 273 274 -== 1.1 1Pin Definitions & Switch ==194 +== 1.10 Pin Definitions & Switch == 275 275 276 276 277 277 [[image:image-20230819104805-5.png]] 278 278 279 279 280 -=== 1.1 1.1 Jumper JP2 ===200 +=== 1.10.1 Jumper JP2 === 281 281 282 282 283 283 Power on Device when put this jumper. 284 284 285 285 286 -=== 1.1 1.2 BOOT MODE / SW1 ===206 +=== 1.10.2 BOOT MODE / SW1 === 287 287 288 288 289 289 **1)** (% style="color:blue" %)**ISP**(%%): upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run. ... ... @@ -291,7 +291,7 @@ 291 291 **2)** (% style="color:blue" %)**Flash**(%%): work mode, device starts to work and send out console output for further debug 292 292 293 293 294 -=== 1.1 1.3 Reset Button ===214 +=== 1.10.3 Reset Button === 295 295 296 296 297 297 Press to reboot the device. ... ... @@ -299,9 +299,8 @@ 299 299 (% style="display:none" %) 300 300 301 301 302 -== 1.1 2Mechanical ==222 +== 1.11 Mechanical == 303 303 304 - 305 305 [[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/1675143884058-338.png?rev=1.1||alt="1675143884058-338.png"]] 306 306 307 307 [[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"]] ... ... @@ -311,17 +311,16 @@ 311 311 312 312 (% style="color:blue" %)**Probe Mechanical:** 313 313 314 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS 20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-1.png?rev=1.1||alt="image-20220615090910-1.png"]]233 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS45%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654915562090-396.png?rev=1.1||alt="1654915562090-396.png"]] 315 315 316 -[[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"]] 317 317 318 318 319 -= 2. Use DDS 20-NB to communicate with IoT Server =237 += 2. Use DDS45-NB to communicate with IoT Server = 320 320 321 321 == 2.1 Send data to IoT server via NB-IoT network == 322 322 323 323 324 -The DDS 20-NB is equipped with a NB-IoT module, the pre-loaded firmware in DDS20-NB will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module. The NB-IoT network will forward this value to IoT server via the protocol defined by DDS20-NB.242 +The DDS45-NB is equipped with a NB-IoT module, the pre-loaded firmware in DDS45-NB will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module. The NB-IoT network will forward this value to IoT server via the protocol defined by DDS45-NB. 325 325 326 326 327 327 Below shows the network structure: ... ... @@ -332,7 +332,7 @@ 332 332 There are two version: (% style="color:blue" %)**-GE**(%%) and (% style="color:blue" %)**-1D**(%%) version of DDS45-NB. 333 333 334 334 335 -(% style="color:blue" %)**GE Version**(%%): This version doesn't include SIM card or point to any IoT server. User needs to use AT Commands to configure below two steps to set DDS 20-NB send data to IoT server.253 +(% style="color:blue" %)**GE Version**(%%): This version doesn't include SIM card or point to any IoT server. User needs to use AT Commands to configure below two steps to set DDS45-NB send data to IoT server. 336 336 337 337 * Install NB-IoT SIM card and configure APN. See instruction of [[Attach Network>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.AttachNetwork]]. 338 338 ... ... @@ -362,13 +362,13 @@ 362 362 [[image:image-20230819113244-11.png||height="141" width="367"]] 363 363 )))|(% style="width:170px" %) 364 364 365 -(% style="color:blue" %)**1D Version**(%%): This version has 1NCE SIM card pre-installed and configure to send value to DataCake. User Just need to select the sensor type in DataCake and Activate DDS 20-NB and user will be able to see data in DataCake. See here for [[DataCake Config Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]].283 +(% style="color:blue" %)**1D Version**(%%): This version has 1NCE SIM card pre-installed and configure to send value to DataCake. User Just need to select the sensor type in DataCake and Activate DDS45-NB and user will be able to see data in DataCake. See here for [[DataCake Config Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]]. 366 366 367 367 368 368 == 2.2 Payload Types == 369 369 370 370 371 -To meet different server requirement, DDS 20-NB supports different payload type.289 +To meet different server requirement, DDS45-NB supports different payload type. 372 372 373 373 **Includes:** 374 374 ... ... @@ -394,7 +394,7 @@ 394 394 395 395 This is the General Json Format. As below: 396 396 397 -(% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24,"Model":DDS 20-NB, "1":{28.2,48.3,2023/08/10 08:00:37},"2":{28.1,49.1,2023/08/10 07:57:37},"3":{28.1,48.5,2023/08/10 07:54:37},"4":{28.2,48.6,2023/08/10 07:51:37},"5":{28.1,48.9,2023/08/10 07:48:37},"6":{28.2,48.8,2023/08/10 07:45:37},"7":{28.2,48.8,2023/08/10 07:42:37},"8":{28.0,48.8,2023/08/10 07:39:37}}**315 +(% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24,"Model":DDS45-NB, "1":{28.2,48.3,2023/08/10 08:00:37},"2":{28.1,49.1,2023/08/10 07:57:37},"3":{28.1,48.5,2023/08/10 07:54:37},"4":{28.2,48.6,2023/08/10 07:51:37},"5":{28.1,48.9,2023/08/10 07:48:37},"6":{28.2,48.8,2023/08/10 07:45:37},"7":{28.2,48.8,2023/08/10 07:42:37},"8":{28.0,48.8,2023/08/10 07:39:37}}** 398 398 399 399 400 400 (% style="color:red" %)**Notice, from above payload:** ... ... @@ -417,7 +417,7 @@ 417 417 418 418 These bytes include the hardware and software version. 419 419 420 -(% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for DDS 20-NB338 +(% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for DDS45-NB 421 421 422 422 (% style="color:#037691" %)**Lower byte:**(%%) Specify the software version: 0x64=100, means firmware version 100 423 423 ... ... @@ -475,7 +475,7 @@ 475 475 476 476 477 477 ((( 478 -DDS 20-NB will uplink payload via LoRaWAN with below payload format:396 +DDS45-NB will uplink payload via LoRaWAN with below payload format: 479 479 ))) 480 480 481 481 ((( ... ... @@ -497,7 +497,7 @@ 497 497 === 2.3.1 Battery Info === 498 498 499 499 500 -Check the battery voltage for DDS 20-NB.418 +Check the battery voltage for DDS45-NB. 501 501 502 502 Ex1: 0x0B45 = 2885mV 503 503 ... ... @@ -508,19 +508,22 @@ 508 508 509 509 510 510 ((( 511 -Get the distance. Flat object range 20mm -2000mm.429 +Get the distance. Flat object range 30mm - 4500mm. 512 512 ))) 513 513 514 514 ((( 515 -For example, if the data you get from the register is **0x0 60x05**, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** **433 +For example, if the data you get from the register is **0x0B 0x05**, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** ** 516 516 517 -(% style="color:blue" %)**0 605(H) = 1541(D) = 1541mm.**435 +(% style="color:blue" %)**0B05(H) = 2821 (D) = 2821 mm.** 518 518 ))) 519 519 520 520 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor. 521 521 522 -* If the sensor value lower than 0x001 4(20mm), the sensor value will beinvalid.440 +* If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00. 523 523 442 + 443 + 444 + 524 524 === 2.3.3 Interrupt Pin === 525 525 526 526 ... ... @@ -573,7 +573,7 @@ 573 573 == 2.5 Multi-Samplings and One uplink == 574 574 575 575 576 -To save battery life, DDS 20-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:497 +To save battery life, DDS45-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: 577 577 578 578 * (% style="color:#037691" %)**AT+TR=900** (%%) ~/~/ The unit is seconds, and the default is to record data once every 900 seconds (15 minutes, the minimum can be set to 180 seconds) 579 579 ... ... @@ -587,7 +587,7 @@ 587 587 == 2.6 Trggier an uplink by external interrupt == 588 588 589 589 590 -DDS 20-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.511 +DDS45-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets. 591 591 592 592 (% style="color:blue" %)**AT command:** 593 593 ... ... @@ -601,12 +601,12 @@ 601 601 602 602 * (% style="color:#037691" %)**AT+INTMOD=3 **(%%) ~/~/ Trigger by rising edge 603 603 604 -= 3. Configure DDS 20-NB =525 += 3. Configure DDS45-NB = 605 605 606 606 == 3.1 Configure Methods == 607 607 608 608 609 -DDS 20-NB supports below configure method:530 +DDS45-NB supports below configure method: 610 610 611 611 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]]. 612 612 ... ... @@ -695,7 +695,7 @@ 695 695 = 4. Battery & Power Consumption = 696 696 697 697 698 -DDS 20-NB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.619 +DDS45-NB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace. 699 699 700 700 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] . 701 701 ... ... @@ -717,6 +717,9 @@ 717 717 718 718 * 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]]**. 719 719 641 + 642 + 643 + 720 720 = 6. FAQ = 721 721 722 722 == 6.1 How can I access t BC660K-GL AT Commands? == ... ... @@ -727,23 +727,49 @@ 727 727 [[See BC660K-GL AT Command set>>url:https://www.dropbox.com/sh/5f6ssda5fum8rvs/AABT68l8ZzWOvZ5eg2qwOoFda?dl=0]] 728 728 729 729 730 -= 7.Trouble Shooting=654 +== 6.2 Can I use DDS45-NB in condensation environment? == 731 731 732 -== 7.1 Why i always see 0x0000 or 0 for the distance value? == 733 733 657 +DDS45-NB is not suitable to be used in condensation environment. Condensation on the DDS45-NB probe will affect the reading and always got 0. 734 734 735 -((( 736 -DDS20-NB has a strict [[**installation requirement**>>||anchor="H1.5A0InstallDDS20-NB"]]. Please make sure the installation method exactly follows up with the installation requirement. Otherwise, the reading might be always 0x00. 737 737 738 - Ifyouhave followed the instruction requirement exactlybut still seethe 0x00 reading issue, please. please double-check the decoder, you can checkthe raw payload to verify.660 += 7. Trouble Shooting = 739 739 740 - 741 -))) 662 +== 7.1 Why does the sensor reading show 0 or "No sensor" == 742 742 664 + 665 +~1. The measurement object is very close to the sensor, but in the blind spot of the sensor. 666 + 667 +2. Sensor wiring is disconnected 668 + 669 +3. Not using the correct decoder 670 + 671 + 672 +== 7.2 Abnormal readings The gap between multiple readings is too large or the gap between the readings and the actual value is too large == 673 + 674 + 675 +1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.) 676 + 677 +2) Does it change with temperature, temperature will affect its measurement 678 + 679 +3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode. 680 + 681 +downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1** 682 + 683 +4) After entering the debug mode, it will send 20 pieces of data at a time, and you can send its uplink to us for analysis 684 + 685 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/image-20230113135125-2.png?width=1057&height=136&rev=1.1||alt="image-20230113135125-2.png"]] 686 + 687 + 688 +Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data. 689 + 690 +Please send the data to us for check. 691 + 692 + 743 743 = 8. Order Info = 744 744 745 745 746 -Part Number: (% style="color:blue" %)**DDS 20-NB-XX**696 +Part Number: (% style="color:blue" %)**DDS45-NB-XX** 747 747 748 748 (% style="color:red" %)**XX**(%%): 749 749 ... ... @@ -759,7 +759,7 @@ 759 759 760 760 (% style="color:#037691" %)**Package Includes**: 761 761 762 -* DDS 20-NB NB-IoT Ultrasonic liquid level sensor x 1712 +* DDS450-NB NB-IoT Ultrasonic liquid level sensor x 1 763 763 764 764 * External antenna x 1 765 765 ... ... @@ -773,6 +773,9 @@ 773 773 774 774 * Weight / pcs : 180g 775 775 726 + 727 + 728 + 776 776 = 10. Support = 777 777 778 778