Skip to Content
Last modified by Xiaoling on 2025/04/27 16:45
From version 169.5
edited by Xiaoling
on 2022/06/15 09:34
Change comment: There is no comment for this version
To version 172.8
edited by Xiaoling
on 2022/06/15 10:04
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -143,6 +143,7 @@
143 143  [[image:image-20220615092044-12.png]]
144 144  
145 145  
146 +
146 146  (% style="color:blue" %)**Step3:   **(%%)Test the installation point.
147 147  
148 148  Power on LDDS75, 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.
... ... @@ -171,9 +171,9 @@
171 171  (% style="color:red" %)Ultrasonic coupling paste (%%) is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
172 172  
173 173  
175 +
174 174  (% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
175 175  
176 -
177 177  Prepare Eproxy AB glue.
178 178  
179 179  Put Eproxy AB glue in the sensor and press it hard on the container installation point.
... ... @@ -182,6 +182,7 @@
182 182  
183 183  [[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
184 184  
186 +
185 185  (% style="color:red" %)**Note 1:**
186 186  
187 187  Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
... ... @@ -193,38 +193,39 @@
193 193  
194 194  
195 195  
198 +== 1.6 ​ Applications ==
196 196  
200 +* Smart liquid control solution.
201 +* Smart liquefied gas solution.
197 197  
198 198  
199 -== 1.5 ​ Applications ==
200 200  
201 -* Horizontal distance measurement
202 -* Liquid level measurement
203 -* Parking management system
204 -* Object proximity and presence detection
205 -* Intelligent trash can management system
206 -* Robot obstacle avoidance
207 -* Automatic control
208 -* Sewer
209 -* Bottom water level monitoring
205 +== 1.7  Precautions ==
210 210  
211 -== 1.6  Pin mapping and power on ==
207 +* 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.
208 +* 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.
209 +* 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.
212 212  
213 213  
214 -[[image:1654847583902-256.png]]
215 215  
213 +== 1.8  Pin mapping and power on ==
216 216  
217 217  
218 -= 2.  Configure LDDS75 to connect to LoRaWAN network =
216 +[[image:1655257026882-201.png]]
219 219  
218 +
219 +
220 += 2.  Configure LDDS20 to connect to LoRaWAN network =
221 +
222 +
220 220  == 2.1  How it works ==
221 221  
222 222  (((
223 -The LDDS75 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS75. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value
226 +The LDDS20 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS20. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value.
224 224  )))
225 225  
226 226  (((
227 -In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0ConfigureLDDS75viaATCommandorLoRaWANDownlink"]]to set the keys in the LDDS75.
230 +In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0UsingtheATCommands"]]to set the keys in the LDDS20.
228 228  )))
229 229  
230 230  
... ... @@ -236,7 +236,7 @@
236 236  )))
237 237  
238 238  (((
239 -[[image:1654848616367-242.png]]
242 +[[image:1655257698953-697.png]]
240 240  )))
241 241  
242 242  (((
... ... @@ -246,11 +246,11 @@
246 246  (((
247 247  
248 248  
249 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
252 +(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS20.
250 250  )))
251 251  
252 252  (((
253 -Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
256 +Each LDDS20 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
254 254  )))
255 255  
256 256  [[image:image-20220607170145-1.jpeg]]
... ... @@ -280,6 +280,7 @@
280 280  [[image:image-20220610161353-7.png]]
281 281  
282 282  
286 +
283 283  You can also choose to create the device manually.
284 284  
285 285   [[image:image-20220610161538-8.png]]
... ... @@ -292,16 +292,17 @@
292 292  
293 293  
294 294  
295 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
299 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
296 296  
297 297  
298 298  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
299 299  
300 -[[image:image-20220610161724-10.png]]
304 +[[image:image-20220615095102-14.png]]
301 301  
302 302  
307 +
303 303  (((
304 -(% style="color:blue" %)**Step 3**(%%)**:** The LDDS75 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
309 +(% style="color:blue" %)**Step 3**(%%)**:**  The LDDS20 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
305 305  )))
306 306  
307 307  [[image:1654849068701-275.png]]
... ... @@ -312,12 +312,10 @@
312 312  
313 313  (((
314 314  (((
315 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
316 -)))
320 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
317 317  
318 -(((
319 -Uplink payload includes in total 4 bytes.
320 -Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
322 +Uplink payload includes in total 8 bytes.
323 +Payload for firmware version v1.1.4. . Before v1.1.3, there is only 5 bytes: BAT and Distance(Please check manual v1.2.0 if you have 5 bytes payload).
321 321  )))
322 322  )))
323 323  
... ... @@ -344,7 +344,7 @@
344 344  === 2.3.1  Battery Info ===
345 345  
346 346  
347 -Check the battery voltage for LDDS75.
350 +Check the battery voltage for LDDS20.
348 348  
349 349  Ex1: 0x0B45 = 2885mV
350 350  
... ... @@ -355,20 +355,21 @@
355 355  === 2.3.2  Distance ===
356 356  
357 357  (((
358 -Get the distance. Flat object range 280mm - 7500mm.
361 +Get the distance. Flat object range 20mm - 2000mm.
359 359  )))
360 360  
361 361  (((
362 -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" %)** 0B05(H) = 2821 (D) = 2821 mm.**
365 +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" %)** 0605(H) = 1541 (D) = 1541 mm.**
363 363  )))
364 364  
368 +* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
369 +* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
365 365  
366 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
367 -* If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
368 368  
372 +
369 369  === 2.3.3  Interrupt Pin ===
370 370  
371 -This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
375 +This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.2A0SetInterruptMode"]] for the hardware and software set up.
372 372  
373 373  **Example:**
374 374  
... ... @@ -414,7 +414,7 @@
414 414  The payload decoder function for TTN V3 is here:
415 415  
416 416  (((
417 -LDDS75 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
421 +LDDS20 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS20/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
418 418  )))
419 419  
420 420  
1655257026882-201.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Xiaoling
Size
... ... @@ -1,0 +1,1 @@
1 +492.6 KB
Content
1655257698953-697.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Xiaoling
Size
... ... @@ -1,0 +1,1 @@
1 +101.7 KB
Content
image-20220615095102-14.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Xiaoling
Size
... ... @@ -1,0 +1,1 @@
1 +179.0 KB
Content