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Last modified by Mengting Qiu on 2023/12/14 11:15
From version 90.4
edited by Xiaoling
on 2023/07/15 15:31
Change comment: There is no comment for this version
To version 82.3
edited by Xiaoling
on 2023/06/14 16:32
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -35,7 +35,7 @@
35 35  
36 36  Each LDS12-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.
37 37  
38 -[[image:image-20230615152941-1.png||height="459" width="800"]]
38 +[[image:image-20230614162334-2.png||height="468" width="800"]]
39 39  
40 40  
41 41  == 1.2 ​Features ==
... ... @@ -99,28 +99,143 @@
99 99  * Sleep Mode: 5uA @ 3.3v
100 100  * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
101 101  
102 -== 1.4 Applications ==
102 +== 1.4 Suitable Container & Liquid ==
103 103  
104 104  
105 -* Horizontal distance measurement
106 -* Parking management system
107 -* Object proximity and presence detection
108 -* Intelligent trash can management system
109 -* Robot obstacle avoidance
110 -* Automatic control
111 -* Sewer
105 +* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
106 +* Container shape is regular, and surface is smooth.
107 +* Container Thickness:
108 +** Pure metal material.  2~~8mm, best is 3~~5mm
109 +** Pure non metal material: <10 mm
110 +* Pure liquid without irregular deposition.
112 112  
113 113  (% style="display:none" %)
114 114  
115 -== 1.5 Sleep mode and working mode ==
114 +== 1.5 Install LDS12-LB ==
116 116  
117 117  
117 +(% style="color:blue" %)**Step 1**(%%):  ** Choose the installation point.**
118 +
119 +LDS12-LB (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
120 +
121 +[[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"]]
122 +
123 +
124 +(((
125 +(% style="color:blue" %)**Step 2**(%%):  **Polish the installation point.**
126 +)))
127 +
128 +(((
129 +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.
130 +)))
131 +
132 +[[image:image-20230613143052-5.png]]
133 +
134 +
135 +No polish needed if the container is shine metal surface without paint or non-metal container.
136 +
137 +[[image:image-20230613143125-6.png]]
138 +
139 +
140 +(((
141 +(% style="color:blue" %)**Step3:   **(%%)**Test the installation point.**
142 +)))
143 +
144 +(((
145 +Power on LDS12-LB, 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.
146 +)))
147 +
148 +(((
149 +It is necessary to put the coupling paste between the sensor and the container, otherwise LDS12-LB won't detect the liquid level.
150 +)))
151 +
152 +(((
153 +After paste the LDS12-LB well, power on LDS12-LB. 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.
154 +)))
155 +
156 +
157 +(((
158 +(% style="color:blue" %)**LED Status:**
159 +)))
160 +
161 +* (((
162 +**Onboard LED**: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
163 +)))
164 +
165 +* (((
166 +(% 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.
167 +)))
168 +* (((
169 +(% style="color:blue" %)**BLUE LED**(% style="color:red" %)** slowly blinking**(%%): Sensor detects Liquid Level, The installation point is good.
170 +)))
171 +
172 +(((
173 +LDS12-LB will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
174 +)))
175 +
176 +
177 +(((
178 +(% 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.
179 +)))
180 +
181 +
182 +(((
183 +(% style="color:blue" %)**Step4:   **(%%)**Install use Epoxy ab glue.**
184 +)))
185 +
186 +(((
187 +Prepare Eproxy AB glue.
188 +)))
189 +
190 +(((
191 +Put Eproxy AB glue in the sensor and press it hard on the container installation point.
192 +)))
193 +
194 +(((
195 +Reset LDS12-LB and see if the BLUE LED is slowly blinking.
196 +)))
197 +
198 +[[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-20220615091045-8.png?width=341&height=203&rev=1.1||alt="image-20220615091045-8.png"]] [[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-20220615091045-9.png?width=284&height=200&rev=1.1||alt="image-20220615091045-9.png"]]
199 +
200 +
201 +(((
202 +(% style="color:red" %)**Note :**
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 +== 1.6 Applications ==
213 +
214 +
215 +* Smart liquid control solution
216 +
217 +* Smart liquefied gas solution
218 +
219 +== 1.7 Precautions ==
220 +
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 +== 1.8 Sleep mode and working mode ==
231 +
232 +
118 118  (% 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.
119 119  
120 120  (% 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.
121 121  
122 122  
123 -== 1.6 Button & LEDs ==
238 +== 1.9 Button & LEDs ==
124 124  
125 125  
126 126  [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
... ... @@ -139,7 +139,7 @@
139 139  )))
140 140  |(% 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.
141 141  
142 -== 1.7 BLE connection ==
257 +== 1.10 BLE connection ==
143 143  
144 144  
145 145  LDS12-LB support BLE remote configure.
... ... @@ -153,12 +153,12 @@
153 153  If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
154 154  
155 155  
156 -== 1.8 Pin Definitions ==
271 +== 1.11 Pin Definitions ==
157 157  
158 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/WL03A-LB_LoRaWAN_None-Position_Rope_Type_Water_Leak_Controller_User_Manual/WebHome/image-20230613144156-1.png?rev=1.1||alt="image-20230613144156-1.png"]]
273 +[[image:image-20230523174230-1.png]]
159 159  
160 160  
161 -== 1.9 Mechanical ==
276 +== 1.12 Mechanical ==
162 162  
163 163  
164 164  [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
... ... @@ -173,6 +173,7 @@
173 173  (% style="color:blue" %)**Probe Mechanical:**
174 174  
175 175  
291 +
176 176  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654827224480-952.png?rev=1.1||alt="1654827224480-952.png"]]
177 177  
178 178  
... ... @@ -192,7 +192,7 @@
192 192  
193 193  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.
194 194  
195 -[[image:image-20230615153004-2.png||height="459" width="800"]](% style="display:none" %)
311 +[[image:image-20230614162359-3.png||height="468" width="800"]](% style="display:none" %)
196 196  
197 197  
198 198  (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from LDS12-LB.
... ... @@ -236,104 +236,32 @@
236 236  After join success, it will start to upload messages to TTN and you can see the messages in the panel.
237 237  
238 238  
239 -== 2.3 ​Uplink Payload ==
355 +== 2.3  ​Uplink Payload ==
240 240  
241 241  
242 -=== 2.3.1 Device Status, FPORT~=5 ===
243 -
244 -
245 -Users can use the downlink command(**0x26 01**) to ask LDS12-LB to send device configure detail, include device configure status. LDS12-LB will uplink a payload via FPort=5 to server.
246 -
247 -The Payload format is as below.
248 -
249 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
250 -|=(% style="width: 62.5px;background-color:#4F81BD;color:white" %)(((
251 -**Size(bytes)**
252 -)))|=(% style="width: 110px; background-color: rgb(79, 129, 189); color: white;" %)**1**|=(% style="width: 48px; background-color: rgb(79, 129, 189); color: white;" %)**2**|=(% style="background-color: rgb(79, 129, 189); color: white; width: 94px;" %)**1**|=(% style="background-color: rgb(79, 129, 189); color: white; width: 91px;" %)**1**|=(% style="background-color: rgb(79, 129, 189); color: white; width: 60px;" %)**2**
253 -|(% style="width:62.5px" %)Value|(% style="width:110px" %)Sensor Model|(% style="width:48px" %)Firmware Version|(% style="width:94px" %)Frequency Band|(% style="width:91px" %)Sub-band|(% style="width:60px" %)BAT
254 -
255 -Example parse in TTNv3
256 -
257 -**Sensor Model**: For LDS12-LB, this value is 0x24
258 -
259 -**Firmware Version**: 0x0100, Means: v1.0.0 version
260 -
261 -**Frequency Band**:
262 -
263 -0x01: EU868
264 -
265 -0x02: US915
266 -
267 -0x03: IN865
268 -
269 -0x04: AU915
270 -
271 -0x05: KZ865
272 -
273 -0x06: RU864
274 -
275 -0x07: AS923
276 -
277 -0x08: AS923-1
278 -
279 -0x09: AS923-2
280 -
281 -0x0a: AS923-3
282 -
283 -0x0b: CN470
284 -
285 -0x0c: EU433
286 -
287 -0x0d: KR920
288 -
289 -0x0e: MA869
290 -
291 -**Sub-Band**:
292 -
293 -AU915 and US915:value 0x00 ~~ 0x08
294 -
295 -CN470: value 0x0B ~~ 0x0C
296 -
297 -Other Bands: Always 0x00
298 -
299 -**Battery Info**:
300 -
301 -Check the battery voltage.
302 -
303 -Ex1: 0x0B45 = 2885mV
304 -
305 -Ex2: 0x0B49 = 2889mV
306 -
307 -
308 -=== 2.3.2 Uplink Payload, FPORT~=2 ===
309 -
310 -
311 311  (((
312 312  LDS12-LB will uplink payload via LoRaWAN with below payload format: 
313 313  )))
314 314  
315 315  (((
316 -Uplink payload includes in total 11 bytes.
363 +Uplink payload includes in total 8 bytes.
317 317  )))
318 318  
319 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:670px" %)
320 -|=(% style="width: 62.5px;background-color:#4F81BD;color:white" %)(((
366 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
367 +|=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
321 321  **Size(bytes)**
322 -)))|=(% style="width: 62.5px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 62.5px;background-color:#4F81BD;color:white" %)**2**|=(% style="background-color:#4F81BD;color:white" %)**2**|=(% style="background-color:#4F81BD;color:white" %)**2**|=(% style="background-color: rgb(79, 129, 189); color: white; width: 122px;" %)**1**|=(% style="background-color: rgb(79, 129, 189); color: white; width: 54px;" %)**1**|=(% style="background-color: rgb(79, 129, 189); color: white; width: 96px;" %)**1**
323 -|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1BatteryInfo"]]|(% style="width:62.5px" %)(((
324 -[[Temperature DS18B20>>||anchor="H2.3.2DS18B20Temperaturesensor"]]
325 -)))|[[Distance>>||anchor="H2.3.3Distance"]]|[[Distance signal strength>>||anchor="H2.3.4Distancesignalstrength"]]|(% style="width:122px" %)(((
326 -[[Interrupt flag>>]]
327 -[[&>>]]
328 -[[Interrupt_level>>]]
329 -)))|(% style="width:54px" %)[[LiDAR temp>>||anchor="H2.3.6LiDARtemp"]]|(% style="width:96px" %)(((
330 -[[Message Type>>||anchor="H2.3.7MessageType"]]
331 -)))
369 +)))|=(% style="width: 62.5px;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**
370 +|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
371 +[[Distance>>||anchor="H2.3.2A0Distance"]]
372 +(unit: mm)
373 +)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
374 +[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
375 +)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
332 332  
333 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654833689380-972.png?rev=1.1||alt="1654833689380-972.png"]]
377 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/1654850511545-399.png?rev=1.1||alt="1654850511545-399.png"]]
334 334  
335 335  
336 -==== (% style="color:blue" %)**Battery Info** ====
380 +=== 2.3.1  Battery Info ===
337 337  
338 338  
339 339  Check the battery voltage for LDS12-LB.
... ... @@ -343,50 +343,28 @@
343 343  Ex2: 0x0B49 = 2889mV
344 344  
345 345  
346 -==== (% style="color:blue" %)**DS18B20 Temperature sensor** ====
390 +=== 2.3.2  Distance ===
347 347  
348 348  
349 -This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
393 +(((
394 +Get the distance. Flat object range 20mm - 2000mm.
395 +)))
350 350  
397 +(((
398 +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" %)** **
351 351  
352 -**Example**:
400 +(% style="color:blue" %)**0605(H) = 1541 (D) = 1541 mm.**
401 +)))
353 353  
354 -If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
403 +* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
355 355  
356 -If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
405 +* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
357 357  
407 +=== 2.3.3  Interrupt Pin ===
358 358  
359 -==== (% style="color:blue" %)**Distance** ====
360 360  
361 -
362 -Represents the distance value of the measurement output, the default unit is cm, and the value range parsed as a decimal number is 0-1200. In actual use, when the signal strength value Strength.
363 -
364 -
365 -**Example**:
366 -
367 -If the data you get from the register is 0x0B 0xEA, the distance between the sensor and the measured object is 0BEA(H) = 3050 (D)/10 = 305cm.
368 -
369 -
370 -====(% style="color:blue" %) **Distance signal strength** ====
371 -
372 -
373 -Refers to the signal strength, the default output value will be between 0-65535. When the distance measurement gear is fixed, the farther the distance measurement is, the lower the signal strength; the lower the target reflectivity, the lower the signal strength. When Strength is greater than 100 and not equal to 65535, the measured value of Dist is considered credible.
374 -
375 -
376 -**Example**:
377 -
378 -If payload is: 01D7(H)=471(D), distance signal strength=471, 471>100,471≠65535, the measured value of Dist is considered credible.
379 -
380 -Customers can judge whether they need to adjust the environment based on the signal strength.
381 -
382 -
383 -====(% style="color:blue" %) **Interrupt Pin & Interrupt Level** ====
384 -
385 -
386 386  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.
387 387  
388 -Note: The Internet Pin is a separate pin in the screw terminal. See [[pin mapping>>||anchor="H1.8PinDefinitions"]].
389 -
390 390  **Example:**
391 391  
392 392  0x00: Normal uplink packet.
... ... @@ -394,58 +394,51 @@
394 394  0x01: Interrupt Uplink Packet.
395 395  
396 396  
397 -==== (% style="color:blue" %)**LiDAR temp** ====
419 +=== 2.3.4  DS18B20 Temperature sensor ===
398 398  
399 399  
400 -Characterize the internal temperature value of the sensor.
422 +This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
401 401  
402 -**Example: **
403 -If payload is: 1C(H) <<24>>24=28(D),LiDAR temp=28℃.
404 -If payload is: F2(H) <<24>>24=-14(D),LiDAR temp=-14℃.
424 +**Example**:
405 405  
426 +If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
406 406  
407 -==== (% style="color:blue" %)**Message Type** ====
428 +If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
408 408  
409 409  
431 +=== 2.3.5  Sensor Flag ===
432 +
433 +
410 410  (((
411 -For a normal uplink payload, the message type is always 0x01.
435 +0x01: Detect Ultrasonic Sensor
412 412  )))
413 413  
414 414  (((
415 -Valid Message Type:
439 +0x00: No Ultrasonic Sensor
416 416  )))
417 417  
418 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:499px" %)
419 -|=(% style="width: 161px;background-color:#4F81BD;color:white" %)**Message Type Code**|=(% style="width: 164px;background-color:#4F81BD;color:white" %)**Description**|=(% style="width: 174px;background-color:#4F81BD;color:white" %)**Payload**
420 -|(% style="width:160px" %)0x01|(% style="width:163px" %)Normal Uplink|(% style="width:173px" %)[[Normal Uplink Payload>>||anchor="H2.3200BUplinkPayload"]]
421 -|(% style="width:160px" %)0x02|(% style="width:163px" %)Reply configures info|(% style="width:173px" %)[[Configure Info Payload>>||anchor="H3.ConfigureLDS12-LB"]]
422 422  
443 +=== 2.3.6  Decode payload in The Things Network ===
423 423  
424 424  
425 -=== 2.3.3 Decode payload in The Things Network ===
426 -
427 -
428 428  While using TTN network, you can add the payload format to decode the payload.
429 429  
430 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654592762713-715.png?rev=1.1||alt="1654592762713-715.png"]]
448 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654850829385-439.png?rev=1.1||alt="1654850829385-439.png"]]
431 431  
450 +The payload decoder function for TTN V3 is here:
432 432  
433 433  (((
434 -The payload decoder function for TTN is here:
453 +LDS12-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
435 435  )))
436 436  
437 -(((
438 -LDS12-LB TTN Payload Decoder:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
439 -)))
440 440  
457 +== 2.4  Uplink Interval ==
441 441  
442 -== 2.4 Uplink Interval ==
443 443  
444 -
445 445  The LDS12-LB by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>||anchor="H3.3.1SetTransmitIntervalTime"]]
446 446  
447 447  
448 -== 2.5 ​Show Data in DataCake IoT Server ==
463 +== 2.5  ​Show Data in DataCake IoT Server ==
449 449  
450 450  
451 451  (((
... ... @@ -565,90 +565,6 @@
565 565  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
566 566  
567 567  
568 -== 2.8 LiDAR ToF Measurement ==
569 -
570 -=== 2.8.1 Principle of Distance Measurement ===
571 -
572 -
573 -The LiDAR probe is based on TOF, namely, Time of Flight principle. To be specific, the product emits modulation wave of near infrared ray on a periodic basis, which will be reflected after contacting object. The product obtains the time of flight by measuring round-trip phase difference and then calculates relative range between the product and the detection object, as shown below.
574 -
575 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654831757579-263.png?rev=1.1||alt="1654831757579-263.png"]]
576 -
577 -
578 -=== 2.8.2 Distance Measurement Characteristics ===
579 -
580 -
581 -With optimization of light path and algorithm, The LiDAR probe has minimized influence from external environment on distance measurement performance. Despite that, the range of distance measurement may still be affected by the environment illumination intensity and the reflectivity of detection object. As shown in below:
582 -
583 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654831774373-275.png?rev=1.1||alt="1654831774373-275.png"]]
584 -
585 -
586 -(((
587 -(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
588 -)))
589 -
590 -(((
591 -(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
592 -)))
593 -
594 -(((
595 -(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
596 -)))
597 -
598 -
599 -(((
600 -Vertical Coordinates: Represents the radius of light spot for The LiDAR probe at different distances. The diameter of light spot depends on the FOV of The LiDAR probe (the term of FOV generally refers to the smaller value between the receiving angle and the transmitting angle), which is calculated as follows:
601 -)))
602 -
603 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654831797521-720.png?rev=1.1||alt="1654831797521-720.png"]]
604 -
605 -(((
606 -In the formula above, d is the diameter of light spot; D is detecting range; β is the value of the receiving angle of The LiDAR probe, 3.6°. Correspondence between the diameter of light spot and detecting range is given in Table below.
607 -)))
608 -
609 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654831810009-716.png?rev=1.1||alt="1654831810009-716.png"]]
610 -
611 -(((
612 -If the light spot reaches two objects with different distances, as shown in Figure 3, the output distance value will be a value between the actual distance values of the two objects. For a high accuracy requirement in practice, the above situation should be noticed to avoid the measurement error.
613 -)))
614 -
615 -
616 -=== 2.8.3 Notice of usage ===
617 -
618 -
619 -Possible invalid /wrong reading for LiDAR ToF tech:
620 -
621 -* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
622 -* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might be wrong.
623 -* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
624 -* The sensor window is made by Acrylic. Don't touch it with alcohol material. This will destroy the sensor window.
625 -
626 -=== 2.8.4  Reflectivity of different objects ===
627 -
628 -
629 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:379px" %)
630 -|=(% style="width: 54px;background-color:#4F81BD;color:white" %)Item|=(% style="width: 231px;background-color:#4F81BD;color:white" %)Material|=(% style="width: 94px;background-color:#4F81BD;color:white" %)Relectivity
631 -|(% style="width:53px" %)1|(% style="width:229px" %)Black foam rubber|(% style="width:93px" %)2.4%
632 -|(% style="width:53px" %)2|(% style="width:229px" %)Black fabric|(% style="width:93px" %)3%
633 -|(% style="width:53px" %)3|(% style="width:229px" %)Black rubber|(% style="width:93px" %)4%
634 -|(% style="width:53px" %)4|(% style="width:229px" %)Coal (different types of coal)|(% style="width:93px" %)4~~8%
635 -|(% style="width:53px" %)5|(% style="width:229px" %)Black car paint|(% style="width:93px" %)5%
636 -|(% style="width:53px" %)6|(% style="width:229px" %)Black Jam|(% style="width:93px" %)10%
637 -|(% style="width:53px" %)7|(% style="width:229px" %)Opaque black plastic|(% style="width:93px" %)14%
638 -|(% style="width:53px" %)8|(% style="width:229px" %)Clean rough board|(% style="width:93px" %)20%
639 -|(% style="width:53px" %)9|(% style="width:229px" %)Translucent plastic bottle|(% style="width:93px" %)62%
640 -|(% style="width:53px" %)10|(% style="width:229px" %)Carton cardboard|(% style="width:93px" %)68%
641 -|(% style="width:53px" %)11|(% style="width:229px" %)Clean pine|(% style="width:93px" %)70%
642 -|(% style="width:53px" %)12|(% style="width:229px" %)Opaque white plastic|(% style="width:93px" %)87%
643 -|(% style="width:53px" %)13|(% style="width:229px" %)White Jam|(% style="width:93px" %)90%
644 -|(% style="width:53px" %)14|(% style="width:229px" %)Kodak Standard Whiteboard|(% style="width:93px" %)100%
645 -|(% style="width:53px" %)15|(% style="width:229px" %)(((
646 -Unpolished white metal surface
647 -)))|(% style="width:93px" %)130%
648 -|(% style="width:53px" %)16|(% style="width:229px" %)Glossy light metal surface|(% style="width:93px" %)150%
649 -|(% style="width:53px" %)17|(% style="width:229px" %)stainless steel|(% style="width:93px" %)200%
650 -|(% style="width:53px" %)18|(% style="width:229px" %)Reflector plate, reflective tape|(% style="width:93px" %)>300%
651 -
652 652  = 3. Configure LDS12-LB =
653 653  
654 654  == 3.1 Configure Methods ==
... ... @@ -694,7 +694,7 @@
694 694  )))
695 695  
696 696  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
697 -|=(% style="width: 156px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 137px;background-color:#4F81BD;color:white" %)**Function**|=(% style="background-color:#4F81BD;color:white" %)**Response**
628 +|=(% style="width: 156px;background-color:#D9E2F3; color:#0070c0" %)**Command Example**|=(% style="width: 137px;background-color:#D9E2F3; color:#0070c0" %)**Function**|=(% style="background-color:#D9E2F3; color:#0070c0" %)**Response**
698 698  |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
699 699  30000
700 700  OK
... ... @@ -737,7 +737,7 @@
737 737  (% style="color:blue" %)**AT Command: AT+INTMOD**
738 738  
739 739  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
740 -|=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 197px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Response**
671 +|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**
741 741  |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
742 742  0
743 743  OK
... ... @@ -761,33 +761,6 @@
761 761  
762 762  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
763 763  
764 -=== 3.3.3  Set Power Output Duration ===
765 -
766 -Control the output duration 3V3 . Before each sampling, device will
767 -
768 -~1. first enable the power output to external sensor,
769 -
770 -2. keep it on as per duration, read sensor value and construct uplink payload
771 -
772 -3. final, close the power output.
773 -
774 -(% style="color:blue" %)**AT Command: AT+3V3T**
775 -
776 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
777 -|=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 197px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Response**
778 -|(% style="width:154px" %)AT+3V3T=?|(% style="width:196px" %)Show 3V3 open time.|(% style="width:157px" %)0 (default)
779 -OK
780 -|(% style="width:154px" %)AT+3V3T=1000|(% style="width:196px" %)Close after a delay of 1000 milliseconds.|(% style="width:157px" %)OK
781 -|(% style="width:154px" %)AT+3V3T=0|(% style="width:196px" %)Always turn on the power supply of 3V3 pin.|(% style="width:157px" %)OK
782 -
783 -(% style="color:blue" %)**Downlink Command: 0x07**(%%)
784 -Format: Command Code (0x07) followed by 3 bytes.
785 -
786 -The first byte is 01,the second and third bytes are the time to turn on.
787 -
788 -* Example 1: Downlink Payload: 07 01 00 00  **~-~-->**  AT+3V3T=0
789 -* Example 2: Downlink Payload: 07 01 01 F4  **~-~-->**  AT+3V3T=500
790 -
791 791  = 4. Battery & Power Consumption =
792 792  
793 793  
... ... @@ -808,7 +808,7 @@
808 808  
809 809  * Fix bugs.
810 810  
811 -Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/w1p7ukjrx49e62r/AAB3uCNCt-koYUvMkZUPBRSca?dl=0]]**
715 +Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/ph4uyz0rchflrnw/AADr1f_5Sg30804NItpfOQbla?dl=0]]**
812 812  
813 813  Methods to Update Firmware:
814 814  
... ... @@ -836,11 +836,11 @@
836 836  
837 837  
838 838  (((
839 -(% style="color:blue" %)**Cause ①**(%%)**：**Due to the physical principles of The LiDAR probe, the above phenomenon is likely to occur if the detection object is the material with high reflectivity (such as mirror, smooth floor tile, etc.) or transparent substance. (such as glass and water, etc.)
743 +(% style="color:blue" %)**Cause ①**(%%)**：**Due to the physical principles of The LiDAR probe, the above phenomenon is likely to occur if the detection object is the material with high reflectivity (such as mirror, smooth floor tile, etc.) or transparent substance (such as glass and water, etc.)
840 840  )))
841 841  
842 842  (((
843 -(% style="color:red" %)**Troubleshooting**(%%): Please avoid use of this product under such circumstance in practice.
747 +Troubleshooting: Please avoid use of this product under such circumstance in practice.
844 844  )))
845 845  
846 846  
... ... @@ -849,7 +849,7 @@
849 849  )))
850 850  
851 851  (((
852 -(% style="color:red" %)**Troubleshooting**(%%): please use dry dust-free cloth to gently remove the foreign matter.
756 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
853 853  )))
854 854  
855 855  
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