Last modified by Mengting Qiu on 2025/02/26 15:04
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From version < 150.8 >
edited by Xiaoling
on 2022/06/11 08:37
To version < 150.37 >
edited by Xiaoling
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Summary

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20 20  
21 21  
22 22  (((
23 +(((
23 23  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.
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26 26  It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
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29 29  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.
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32 32  LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
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33 33  
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35 35  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.
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38 38  (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
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40 40  )))
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41 41  
42 42  
43 43  [[image:1654847051249-359.png]]
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61 61  
62 62  
63 63  
64 -
65 65  == 1.3  Specification ==
66 66  
67 67  === 1.3.1  Rated environmental conditions ===
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68 68  
69 69  [[image:image-20220610154839-1.png]]
70 70  
71 -**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
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98 +**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)**
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72 72  
73 -**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)**
74 74  
75 75  
76 -
77 77  === 1.3.2  Effective measurement range Reference beam pattern ===
78 78  
79 79  **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
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83 83  [[image:1654852253176-749.png]]
84 84  
85 85  
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86 86  **(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.**
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88 88  
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210 210  **Size (bytes)**
211 211  )))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
212 212  |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
213 -[[Distance>>||anchor="H2.3.3A0Distance"]]
240 +[[Distance>>||anchor="H2.3.2A0Distance"]]
214 214  
215 215  (unit: mm)
216 -)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0Distancesignalstrength"]]|(((
217 -[[Temperature (Optional )>>||anchor="H2.3.5A0InterruptPin"]]
218 -)))|[[Sensor Flag>>path:#Sensor_Flag]]
243 +)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
244 +[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
245 +)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
219 219  
220 220  [[image:1654850511545-399.png]]
221 221  
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244 244  
245 245  === 2.3.3  Interrupt Pin ===
246 246  
247 -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.
274 +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.
248 248  
249 249  **Example:**
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826 826  
827 827  [[image:image-20220610172003-1.png]]
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829 829  [[image:image-20220610172003-2.png]]
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860 +
832 832  == 2.10  Battery Analysis ==
833 833  
834 834  === 2.10.1  Battery Type ===
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839 839  The battery related documents as below:
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841 841  * (((
842 -[[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
871 +[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
843 843  )))
844 844  * (((
845 845  [[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
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855 855  === 2.10.2  Replace the battery ===
856 856  
857 857  (((
858 -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.
887 +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.
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863 863  )))
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866 -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)
895 +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)
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871 -= 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
900 += 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
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873 873  (((
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878 878  
879 879  * (((
880 880  (((
881 -AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
910 +AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
882 882  )))
883 883  )))
884 884  * (((

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