Last modified by Xiaoling on 2025/04/27 16:45
<
From version < 152.2 >
edited by Xiaoling
on 2022/06/14 17:17
To version < 155.1 >
edited by Xiaoling
on 2022/06/15 09:05
>
Change comment: Uploaded new attachment "1655255122126-327.png", version {1}

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Title
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1 -LDDS75 - LoRaWAN Distance Detection Sensor User Manual
1 +LDDS20 - LoRaWAN Ultrasonic Liquid Level Sensor User Manual
Content
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1 1  (% style="text-align:center" %)
2 -[[image:1654846127817-788.png]]
2 +[[image:1655254599445-662.png]]
3 3  
4 4  
5 5  
6 6  
7 -
8 8  **Table of Contents:**
9 9  
10 -{{toc/}}
11 11  
12 12  
13 13  
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15 15  
16 16  
17 17  
18 -
19 19  = 1.  Introduction =
20 20  
21 -== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
18 +== 1.1 ​ What is LoRaWAN Ultrasonic liquid level Sensor ==
22 22  
23 23  (((
24 24  
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25 25  
26 26  (((
27 27  (((
28 -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.
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
29 29  )))
30 30  
31 31  (((
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33 33  )))
34 34  
35 35  (((
36 -It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
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**. 
37 37  )))
38 38  
39 39  (((
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41 41  )))
42 42  
43 43  (((
44 -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.
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.
45 45  )))
46 46  
47 47  (((
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49 49  )))
50 50  
51 51  (((
52 -LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
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.
53 53  )))
54 54  
55 55  (((
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57 57  )))
58 58  
59 59  (((
60 -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.
58 +LDDS20 is powered by (% style="color:#4472c4" %)**8500mA Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
61 61  )))
62 62  
63 63  (((
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65 65  )))
66 66  
67 67  (((
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.
67 +)))
68 +
69 +(((
70 +
71 +)))
72 +)))
73 +
74 +(((
75 +(((
68 68  (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
69 69  )))
70 70  )))
71 71  )))
80 +)))
72 72  
73 73  
74 74  [[image:1654847051249-359.png]]
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90 90  * IP66 Waterproof Enclosure
91 91  * 4000mAh or 8500mAh Battery for long term use
92 92  
93 -
94 -
95 95  == 1.3  Specification ==
96 96  
97 97  === 1.3.1  Rated environmental conditions ===
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99 99  [[image:image-20220610154839-1.png]]
100 100  
101 101  (((
102 -**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  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)**
109 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
110 +
111 +**~ 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)**
103 103  )))
104 104  
105 105  
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135 135  * Sewer
136 136  * Bottom water level monitoring
137 137  
138 -
139 -
140 140  == 1.6  Pin mapping and power on ==
141 141  
142 142  
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173 173  )))
174 174  
175 175  (((
183 +
184 +
176 176  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
177 177  )))
178 178  
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192 192  )))
193 193  
194 194  (((
204 +
205 +
195 195  **Add APP EUI in the application**
196 196  )))
197 197  
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291 291  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
292 292  * 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.
293 293  
294 -
295 -
296 296  === 2.3.3  Interrupt Pin ===
297 297  
298 298  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.
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868 868  * Solid ON for 5 seconds once device successful Join the network.
869 869  * Blink once when device transmit a packet.
870 870  
871 -
872 -
873 873  == 2.8  ​Firmware Change Log ==
874 874  
875 875  
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1086 1086  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1087 1087  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1088 1088  
1089 -
1090 -
1091 1091  = 4.  FAQ =
1092 1092  
1093 1093  == 4.1  What is the frequency plan for LDDS75? ==
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1147 1147  * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1148 1148  * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1149 1149  
1150 -
1151 -
1152 1152  = 7. ​ Packing Info =
1153 1153  
1154 1154  
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1163 1163  * Package Size / pcs : cm
1164 1164  * Weight / pcs : g
1165 1165  
1166 -
1167 -
1168 1168  = 8.  ​Support =
1169 1169  
1170 1170  * 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.
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