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Title
... ... @@ -1,1 +1,1 @@
1 -LDDS20 - LoRaWAN Ultrasonic Liquid Level Sensor User Manual
1 +LDDS75 - LoRaWAN Distance Detection Sensor User Manual
Content
... ... @@ -1,97 +1,54 @@
1 1  (% style="text-align:center" %)
2 -[[image:1655254599445-662.png]]
2 +[[image:1654846127817-788.png]]
3 3  
4 +**Contents:**
4 4  
5 5  
6 6  
7 -**Table of Contents:**
8 8  
9 9  
10 10  
11 11  
12 12  
13 -
14 -
15 -
16 16  = 1.  Introduction =
17 17  
18 -== 1.1 ​ What is LoRaWAN Ultrasonic liquid level Sensor ==
15 +== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
19 19  
20 20  (((
21 21  
22 22  
23 23  (((
24 -(((
25 -(((
26 -The Dragino LDDS20 is a (% style="color:#4472c4" %)**LoRaWAN Ultrasonic liquid level sensor**(%%) for Internet of Things solution. It uses (% style="color:#4472c4" %)**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
27 -)))
21 +The Dragino LDDS75 is a (% style="color:#4472c4" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:#4472c4" %)** ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The LDDS75 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
28 28  
29 -(((
30 -
31 -)))
32 32  
33 -(((
34 -The LDDS20 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:#4472c4" %)**none-contact measurement makes the measurement safety, easier and possible for some strict situation**. 
35 -)))
24 +It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
36 36  
37 -(((
38 -
39 -)))
40 40  
41 -(((
42 -LDDS20 uses ultrasonic sensing technology for distance measurement. LDDS20 is of high accuracy to measure various liquid such as: (% style="color:#4472c4" %)**toxic substances**(%%), (% style="color:#4472c4" %)**strong acids**(%%), (% style="color:#4472c4" %)**strong alkalis**(%%) and (% style="color:#4472c4" %)**various pure liquids**(%%) in high-temperature and high-pressure airtight containers.
43 -)))
27 +The LoRa wireless technology used in LDDS75 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
44 44  
45 -(((
46 -
47 -)))
48 48  
49 -(((
50 -The LoRa wireless technology used in LDDS20 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
51 -)))
30 +LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
52 52  
53 -(((
54 -
55 -)))
56 56  
57 -(((
58 -LDDS20 is powered by (% style="color:#4472c4" %)**8500mA Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
59 -)))
33 +Each LDDS75 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
60 60  
61 -(((
62 -
63 -)))
64 64  
65 -(((
66 -Each LDDS20 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
36 +(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors
67 67  )))
68 -
69 -(((
70 -
71 71  )))
72 -)))
73 73  
74 -(((
75 -(((
76 -(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
77 -)))
78 -)))
79 -)))
80 -)))
81 81  
41 +[[image:1654847051249-359.png]]
82 82  
83 -[[image:1655255122126-327.png]]
84 84  
85 85  
86 -
87 87  == ​1.2  Features ==
88 88  
89 89  * LoRaWAN 1.0.3 Class A
90 90  * Ultra low power consumption
91 -* Liquid Level Measurement by Ultrasonic technology
92 -* Measure through container, No need to contact Liquid.
93 -* Valid level range 20mm - 2000mm
94 -* Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
49 +* Distance Detection by Ultrasonic technology
50 +* Flat object range 280mm - 7500mm
51 +* Accuracy: ±(1cm+S*0.3%) (S: Distance)
95 95  * Cable Length : 25cm
96 96  * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
97 97  * AT Commands to change parameters
... ... @@ -98,104 +98,38 @@
98 98  * Uplink on periodically
99 99  * Downlink to change configure
100 100  * IP66 Waterproof Enclosure
101 -* 8500mAh Battery for long term use
58 +* 4000mAh or 8500mAh Battery for long term use
102 102  
103 103  
104 -== 1.3  Suitable Container & Liquid ==
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.
62 +== 1.3  Specification ==
112 112  
64 +=== 1.3.1  Rated environmental conditions ===
113 113  
114 -== 1.4  Mechanical ==
66 +[[image:image-20220610154839-1.png]]
115 115  
116 -[[image:image-20220615090910-1.png]]
68 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
117 117  
70 +**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)**
118 118  
119 -[[image:image-20220615090910-2.png]]
120 120  
121 121  
74 +=== 1.3.2  Effective measurement range Reference beam pattern ===
122 122  
123 -== 1.5  Install LDDS20 ==
76 +**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
124 124  
125 125  
126 -(% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
127 127  
128 -LDDS20 (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
80 +[[image:1654852253176-749.png]]
129 129  
130 -[[image:image-20220615091045-3.png]]
131 131  
83 +**(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.**
132 132  
133 133  
134 -(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
86 +[[image:1654852175653-550.png]](% style="display:none" %) ** **
135 135  
136 -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.
137 137  
138 -[[image:image-20220615092010-11.png]]
139 139  
140 -
141 -No polish needed if the container is shine metal surface without paint or non-metal container.
142 -
143 -[[image:image-20220615092044-12.png]]
144 -
145 -
146 -(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
147 -
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.
149 -
150 -
151 -It is necessary to put the coupling paste between the sensor and the container, otherwise LDDS20 won’t detect the liquid level.
152 -
153 -[[image:1655256160324-178.png]][[image:image-20220615092327-13.png]]
154 -
155 -
156 -After paste the LDDS20 well, power on LDDS20. 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.
157 -
158 -
159 -(% style="color:red" %)**LED Status:**
160 -
161 -* Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
162 -
163 -* (% 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.
164 -* (% style="color:blue" %)BLUE LED(% style="color:red" %) slowly blinking(%%): Sensor detects Liquid Level, The installation point is good.
165 -
166 -LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
167 -
168 -
169 -(% style="color:red" %)**Note 2:**
170 -
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 -
173 -
174 -(% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
175 -
176 -
177 -Prepare Eproxy AB glue.
178 -
179 -Put Eproxy AB glue in the sensor and press it hard on the container installation point.
180 -
181 -Reset LDDS20 and see if the BLUE LED is slowly blinking.
182 -
183 -[[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
184 -
185 -(% style="color:red" %)**Note 1:**
186 -
187 -Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
188 -
189 -
190 -(% style="color:red" %)**Note 2:**
191 -
192 -(% style="color:red" %)Eproxy AB glue(%%) is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
193 -
194 -
195 -
196 -
197 -
198 -
199 199  == 1.5 ​ Applications ==
200 200  
201 201  * Horizontal distance measurement
... ... @@ -208,6 +208,8 @@
208 208  * Sewer
209 209  * Bottom water level monitoring
210 210  
102 +
103 +
211 211  == 1.6  Pin mapping and power on ==
212 212  
213 213  
... ... @@ -244,8 +244,6 @@
244 244  )))
245 245  
246 246  (((
247 -
248 -
249 249  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
250 250  )))
251 251  
... ... @@ -256,19 +256,11 @@
256 256  [[image:image-20220607170145-1.jpeg]]
257 257  
258 258  
259 -(((
260 260  For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
261 -)))
262 262  
263 -(((
264 264  Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
265 -)))
266 266  
267 -(((
268 -
269 -
270 270  **Add APP EUI in the application**
271 -)))
272 272  
273 273  [[image:image-20220610161353-4.png]]
274 274  
... ... @@ -311,15 +311,11 @@
311 311  == 2.3  ​Uplink Payload ==
312 312  
313 313  (((
314 -(((
315 315  LDDS75 will uplink payload via LoRaWAN with below payload format: 
316 -)))
317 317  
318 -(((
319 319  Uplink payload includes in total 4 bytes.
320 320  Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
321 321  )))
322 -)))
323 323  
324 324  (((
325 325  
... ... @@ -330,12 +330,12 @@
330 330  **Size (bytes)**
331 331  )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
332 332  |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
333 -[[Distance>>||anchor="H2.3.2A0Distance"]]
212 +[[Distance>>||anchor="H2.3.3A0Distance"]]
334 334  
335 335  (unit: mm)
336 -)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
337 -[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
338 -)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
215 +)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0Distancesignalstrength"]]|(((
216 +[[Temperature (Optional )>>||anchor="H2.3.5A0InterruptPin"]]
217 +)))|[[Sensor Flag>>path:#Sensor_Flag]]
339 339  
340 340  [[image:1654850511545-399.png]]
341 341  
... ... @@ -354,21 +354,19 @@
354 354  
355 355  === 2.3.2  Distance ===
356 356  
357 -(((
358 358  Get the distance. Flat object range 280mm - 7500mm.
359 -)))
360 360  
361 -(((
362 362  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.**
363 -)))
364 364  
365 365  
366 366  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
367 367  * 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  
244 +
245 +
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.
248 +This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H4.2A0SetInterruptMode"]] for the hardware and software set up.
372 372  
373 373  **Example:**
374 374  
... ... @@ -394,18 +394,14 @@
394 394  
395 395  === 2.3.5  Sensor Flag ===
396 396  
397 -(((
398 398  0x01: Detect Ultrasonic Sensor
399 -)))
400 400  
401 -(((
402 402  0x00: No Ultrasonic Sensor
403 -)))
404 404  
405 405  
279 +===
280 +(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
406 406  
407 -=== 2.3.6  Decode payload in The Things Network ===
408 -
409 409  While using TTN network, you can add the payload format to decode the payload.
410 410  
411 411  
... ... @@ -413,9 +413,7 @@
413 413  
414 414  The payload decoder function for TTN V3 is here:
415 415  
416 -(((
417 417  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/]]
418 -)))
419 419  
420 420  
421 421  
... ... @@ -933,91 +933,92 @@
933 933  
934 934  == 2.7  LED Indicator ==
935 935  
936 -The LDDS75 has an internal LED which is to show the status of different state.
807 +The LLDS12 has an internal LED which is to show the status of different state.
937 937  
938 -
939 -* Blink once when device power on.
940 -* The device detects the sensor and flashes 5 times.
941 -* Solid ON for 5 seconds once device successful Join the network.
809 +* The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.
942 942  * Blink once when device transmit a packet.
943 943  
944 944  == 2.8  ​Firmware Change Log ==
945 945  
946 946  
947 -(((
948 -**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
949 -)))
815 +**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LLDS12/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LLDS12/Firmware/]]
950 950  
951 -(((
952 -
953 -)))
954 954  
955 -(((
956 956  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
957 -)))
958 958  
959 959  
960 960  
961 -== 2.9  Mechanical ==
822 += 3.  LiDAR ToF Measurement =
962 962  
824 +== 3.1 Principle of Distance Measurement ==
963 963  
964 -[[image:image-20220610172003-1.png]]
826 +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.
965 965  
828 +[[image:1654831757579-263.png]]
966 966  
967 -[[image:image-20220610172003-2.png]]
968 968  
969 969  
832 +== 3.2 Distance Measurement Characteristics ==
970 970  
971 -== 2.10  Battery Analysis ==
834 +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:
972 972  
973 -=== 2.10.1  Battery Type ===
836 +[[image:1654831774373-275.png]]
974 974  
975 -The LDDS75 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
976 976  
839 +(((
840 +(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
841 +)))
977 977  
978 -The battery related documents as below:
843 +(((
844 +(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
845 +)))
979 979  
980 -* (((
981 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
847 +(((
848 +(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
982 982  )))
983 -* (((
984 -[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
985 -)))
986 -* (((
987 -[[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
988 -)))
989 989  
990 - [[image:image-20220610172400-3.png]]
991 991  
852 +(((
853 +Vertical Coordinates: Represents the radius of light spot for The LiDAR probe at the 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:
854 +)))
992 992  
993 993  
994 -=== 2.10.2  Replace the battery ===
857 +[[image:1654831797521-720.png]]
995 995  
996 -(((
997 -You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
998 -)))
999 999  
1000 1000  (((
1001 -
861 +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.
1002 1002  )))
1003 1003  
864 +[[image:1654831810009-716.png]]
865 +
866 +
1004 1004  (((
1005 -The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
868 +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.
1006 1006  )))
1007 1007  
1008 1008  
1009 1009  
1010 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
873 +== 3.3 Notice of usage: ==
1011 1011  
875 +Possible invalid /wrong reading for LiDAR ToF tech:
876 +
877 +* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
878 +* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might wrong.
879 +* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
880 +* The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
881 +
882 += 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
883 +
1012 1012  (((
1013 1013  (((
1014 -Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
886 +Use can configure LLDS12 via AT Command or LoRaWAN Downlink.
1015 1015  )))
1016 1016  )))
1017 1017  
1018 1018  * (((
1019 1019  (((
1020 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
892 +AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
1021 1021  )))
1022 1022  )))
1023 1023  * (((
... ... @@ -1032,7 +1032,7 @@
1032 1032  )))
1033 1033  
1034 1034  (((
1035 -There are two kinds of commands to configure LDDS75, they are:
907 +There are two kinds of commands to configure LLDS12, they are:
1036 1036  )))
1037 1037  )))
1038 1038  
... ... @@ -1073,155 +1073,351 @@
1073 1073  
1074 1074  * (((
1075 1075  (((
1076 -(% style="color:#4f81bd" %)** Commands special design for LDDS75**
948 +(% style="color:#4f81bd" %)** Commands special design for LLDS12**
1077 1077  )))
1078 1078  )))
1079 1079  
1080 1080  (((
1081 1081  (((
1082 -These commands only valid for LDDS75, as below:
954 +These commands only valid for LLDS12, as below:
1083 1083  )))
1084 1084  )))
1085 1085  
1086 1086  
1087 1087  
1088 -== 3.1  Access AT Commands ==
960 +== 4.1  Set Transmit Interval Time ==
1089 1089  
1090 -LDDS75 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS75 for using AT command, as below.
962 +Feature: Change LoRaWAN End Node Transmit Interval.
1091 1091  
1092 -[[image:image-20220610172924-4.png||height="483" width="988"]]
964 +(% style="color:#037691" %)**AT Command: AT+TDC**
1093 1093  
966 +[[image:image-20220607171554-8.png]]
1094 1094  
1095 -Or if you have below board, use below connection:
1096 1096  
969 +(((
970 +(% style="color:#037691" %)**Downlink Command: 0x01**
971 +)))
1097 1097  
1098 -[[image:image-20220610172924-5.png]]
973 +(((
974 +Format: Command Code (0x01) followed by 3 bytes time value.
975 +)))
1099 1099  
977 +(((
978 +If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
979 +)))
1100 1100  
981 +* (((
982 +Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
983 +)))
984 +* (((
985 +Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
986 +)))
987 +
988 +== 4.2  Set Interrupt Mode ==
989 +
990 +Feature, Set Interrupt mode for GPIO_EXIT.
991 +
992 +(% style="color:#037691" %)**AT Command: AT+INTMOD**
993 +
994 +[[image:image-20220610105806-2.png]]
995 +
996 +
1101 1101  (((
1102 -In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
998 +(% style="color:#037691" %)**Downlink Command: 0x06**
1103 1103  )))
1104 1104  
1001 +(((
1002 +Format: Command Code (0x06) followed by 3 bytes.
1003 +)))
1105 1105  
1106 - [[image:image-20220610172924-6.png||height="601" width="860"]]
1005 +(((
1006 +This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1007 +)))
1107 1107  
1009 +* (((
1010 +Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1011 +)))
1012 +* (((
1013 +Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1014 +)))
1108 1108  
1016 +== 4.3  Get Firmware Version Info ==
1109 1109  
1110 -== 3.2  Set Transmit Interval Time ==
1018 +Feature: use downlink to get firmware version.
1111 1111  
1112 -Feature: Change LoRaWAN End Node Transmit Interval.
1020 +(% style="color:#037691" %)**Downlink Command: 0x26**
1113 1113  
1114 -(% style="color:#037691" %)**AT Command: AT+TDC**
1022 +[[image:image-20220607171917-10.png]]
1115 1115  
1116 -[[image:image-20220610173409-7.png]]
1024 +* Reply to the confirmation package: 26 01
1025 +* Reply to non-confirmed packet: 26 00
1117 1117  
1027 +Device will send an uplink after got this downlink command. With below payload:
1118 1118  
1029 +Configures info payload:
1030 +
1031 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
1032 +|=(((
1033 +**Size(bytes)**
1034 +)))|=**1**|=**1**|=**1**|=**1**|=**1**|=**5**|=**1**
1035 +|**Value**|Software Type|(((
1036 +Frequency
1037 +
1038 +Band
1039 +)))|Sub-band|(((
1040 +Firmware
1041 +
1042 +Version
1043 +)))|Sensor Type|Reserve|(((
1044 +[[Message Type>>||anchor="H2.3.7A0MessageType"]]
1045 +Always 0x02
1046 +)))
1047 +
1048 +**Software Type**: Always 0x03 for LLDS12
1049 +
1050 +
1051 +**Frequency Band**:
1052 +
1053 +*0x01: EU868
1054 +
1055 +*0x02: US915
1056 +
1057 +*0x03: IN865
1058 +
1059 +*0x04: AU915
1060 +
1061 +*0x05: KZ865
1062 +
1063 +*0x06: RU864
1064 +
1065 +*0x07: AS923
1066 +
1067 +*0x08: AS923-1
1068 +
1069 +*0x09: AS923-2
1070 +
1071 +*0xa0: AS923-3
1072 +
1073 +
1074 +**Sub-Band**: value 0x00 ~~ 0x08
1075 +
1076 +
1077 +**Firmware Version**: 0x0100, Means: v1.0.0 version
1078 +
1079 +
1080 +**Sensor Type**:
1081 +
1082 +0x01: LSE01
1083 +
1084 +0x02: LDDS75
1085 +
1086 +0x03: LDDS20
1087 +
1088 +0x04: LLMS01
1089 +
1090 +0x05: LSPH01
1091 +
1092 +0x06: LSNPK01
1093 +
1094 +0x07: LLDS12
1095 +
1096 +
1097 +
1098 += 5.  Battery & How to replace =
1099 +
1100 +== 5.1  Battery Type ==
1101 +
1119 1119  (((
1120 -(% style="color:#037691" %)**Downlink Command: 0x01**
1103 +LLDS12 is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]. The battery is un-rechargeable battery with low discharge rate targeting for 8~~10 years use. This type of battery is commonly used in IoT target for long-term running, such as water meter.
1121 1121  )))
1122 1122  
1123 1123  (((
1107 +The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
1108 +)))
1109 +
1110 +[[image:1654593587246-335.png]]
1111 +
1112 +
1113 +Minimum Working Voltage for the LLDS12:
1114 +
1115 +LLDS12:  2.45v ~~ 3.6v
1116 +
1117 +
1118 +
1119 +== 5.2  Replace Battery ==
1120 +
1124 1124  (((
1125 -Format: Command Code (0x01) followed by 3 bytes time value.
1122 +Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.
1123 +)))
1126 1126  
1127 1127  (((
1128 -If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1126 +And make sure the positive and negative pins match.
1129 1129  )))
1130 1130  
1131 -* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1132 -* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1129 +
1130 +
1131 +== 5.3  Power Consumption Analyze ==
1132 +
1133 +(((
1134 +Dragino Battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.
1133 1133  )))
1136 +
1137 +(((
1138 +Instruction to use as below:
1134 1134  )))
1135 1135  
1136 1136  
1142 +**Step 1**: Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
1137 1137  
1144 +[[https:~~/~~/www.dragino.com/downloads/index.pHp?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
1138 1138  
1139 1139  
1140 -== 3.3  Set Interrupt Mode ==
1147 +**Step 2**: Open it and choose
1141 1141  
1142 -Feature, Set Interrupt mode for GPIO_EXIT.
1149 +* Product Model
1150 +* Uplink Interval
1151 +* Working Mode
1143 1143  
1144 -(% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1153 +And the Life expectation in difference case will be shown on the right.
1145 1145  
1146 -[[image:image-20220610174917-9.png]]
1155 +[[image:1654593605679-189.png]]
1147 1147  
1148 1148  
1149 -(% style="color:#037691" %)**Downlink Command: 0x06**
1158 +The battery related documents as below:
1150 1150  
1151 -Format: Command Code (0x06) followed by 3 bytes.
1160 +* (((
1161 +[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
1162 +)))
1163 +* (((
1164 +[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
1165 +)))
1166 +* (((
1167 +[[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
1168 +)))
1152 1152  
1170 +[[image:image-20220607172042-11.png]]
1171 +
1172 +
1173 +
1174 +=== 5.3.1  ​Battery Note ===
1175 +
1153 1153  (((
1154 -This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1177 +The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to transmit LoRa, then the battery life may be decreased.
1155 1155  )))
1156 1156  
1157 -* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1158 -* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1159 1159  
1160 -= 4.  FAQ =
1161 1161  
1162 -== 4.1  What is the frequency plan for LDDS75? ==
1182 +=== ​5.3.2  Replace the battery ===
1163 1163  
1164 -LDDS75 use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
1184 +(((
1185 +You can change the battery in the LLDS12.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
1186 +)))
1165 1165  
1188 +(((
1189 +The default battery pack of LLDS12 includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
1190 +)))
1166 1166  
1167 1167  
1168 -== 4.2  How to change the LoRa Frequency Bands/Region ==
1169 1169  
1170 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1171 -When downloading the images, choose the required image file for download. ​
1194 += 6.  Use AT Command =
1172 1172  
1196 +== 6.1  Access AT Commands ==
1173 1173  
1198 +LLDS12 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LLDS12 for using AT command, as below.
1174 1174  
1175 -== 4.3  Can I use LDDS75 in condensation environment? ==
1200 +[[image:1654593668970-604.png]]
1176 1176  
1177 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1202 +**Connection:**
1178 1178  
1204 +(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1179 1179  
1206 +(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1180 1180  
1181 -= 5.  Trouble Shooting =
1208 +(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1182 1182  
1183 -== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1184 1184  
1185 -It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1211 +(((
1212 +(((
1213 +In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1214 +)))
1186 1186  
1216 +(((
1217 +LLDS12 will output system info once power on as below:
1218 +)))
1219 +)))
1187 1187  
1188 -== 5.2  AT Command input doesn't work ==
1189 1189  
1222 + [[image:1654593712276-618.png]]
1223 +
1224 +Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1225 +
1226 +
1227 += 7.  FAQ =
1228 +
1229 +== 7.1  How to change the LoRa Frequency Bands/Region ==
1230 +
1231 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1232 +When downloading the images, choose the required image file for download. ​
1233 +
1234 +
1235 += 8.  Trouble Shooting =
1236 +
1237 +== 8.1  AT Commands input doesn’t work ==
1238 +
1239 +
1240 +(((
1190 1190  In the case if user can see the console output but can’t type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn’t send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
1242 +)))
1191 1191  
1244 +
1245 +== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
1246 +
1247 +
1192 1192  (((
1249 +(% 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.)
1250 +)))
1251 +
1252 +(((
1253 +Troubleshooting: Please avoid use of this product under such circumstance in practice.
1254 +)))
1255 +
1256 +(((
1193 1193  
1194 1194  )))
1195 1195  
1260 +(((
1261 +(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1262 +)))
1196 1196  
1197 -= 6.  Order Info =
1264 +(((
1265 +Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1266 +)))
1198 1198  
1199 1199  
1200 -Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1201 1201  
1270 += 9.  Order Info =
1202 1202  
1203 -(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1204 1204  
1205 -* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1206 -* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1207 -* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1208 -* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1209 -* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1210 -* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1211 -* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1212 -* (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
1273 +Part Number: (% style="color:blue" %)**LLDS12-XX**
1213 1213  
1214 -(% style="color:blue" %)**YY**(%%): Battery Option
1215 1215  
1216 -* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1217 -* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1276 +(% style="color:blue" %)**XX**(%%): The default frequency band
1218 1218  
1219 -= 7. ​ Packing Info =
1278 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
1279 +* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1280 +* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1281 +* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1282 +* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1283 +* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1284 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
1285 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1220 1220  
1287 += 10. ​ Packing Info =
1221 1221  
1289 +
1222 1222  **Package Includes**:
1223 1223  
1224 -* LDDS75 LoRaWAN Distance Detection Sensor x 1
1292 +* LLDS12 LoRaWAN LiDAR Distance Sensor x 1
1225 1225  
1226 1226  **Dimension and weight**:
1227 1227  
... ... @@ -1230,7 +1230,7 @@
1230 1230  * Package Size / pcs : cm
1231 1231  * Weight / pcs : g
1232 1232  
1233 -= 8.  ​Support =
1301 += 11.  ​Support =
1234 1234  
1235 1235  * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1236 1236  * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].
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