Last modified by Mengting Qiu on 2024/03/07 08:41
<
From version < 138.2 >
edited by Xiaoling
on 2022/06/10 17:03
To version < 147.2 >
edited by Xiaoling
on 2022/06/10 17:34
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... ... @@ -58,8 +58,6 @@
58 58  * 4000mAh or 8500mAh Battery for long term use
59 59  
60 60  
61 -
62 -
63 63  == 1.3  Specification ==
64 64  
65 65  === 1.3.1  Rated environmental conditions ===
... ... @@ -74,15 +74,20 @@
74 74  
75 75  === 1.3.2  Effective measurement range Reference beam pattern ===
76 76  
77 -**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**[[image:image-20220610155021-2.png||height="440" width="1189"]]
75 +**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
78 78  
79 79  
80 80  
81 -**(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.[[image:image-20220610155021-3.png||height="437" width="1192"]]
79 +[[image:1654852253176-749.png]]
82 82  
83 -(% style="display:none" %) (%%)
84 84  
82 +**(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.**
85 85  
84 +
85 +[[image:1654852175653-550.png]](% style="display:none" %) ** **
86 +
87 +
88 +
86 86  == 1.5 ​ Applications ==
87 87  
88 88  * Horizontal distance measurement
... ... @@ -95,6 +95,7 @@
95 95  * Sewer
96 96  * Bottom water level monitoring
97 97  
101 +
98 98  == 1.6  Pin mapping and power on ==
99 99  
100 100  
... ... @@ -101,6 +101,7 @@
101 101  [[image:1654847583902-256.png]]
102 102  
103 103  
108 +
104 104  = 2.  Configure LDDS75 to connect to LoRaWAN network =
105 105  
106 106  == 2.1  How it works ==
... ... @@ -114,6 +114,7 @@
114 114  )))
115 115  
116 116  
122 +
117 117  == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
118 118  
119 119  (((
... ... @@ -245,6 +245,7 @@
245 245  0x01: Interrupt Uplink Packet.
246 246  
247 247  
254 +
248 248  === 2.3.4  DS18B20 Temperature sensor ===
249 249  
250 250  This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
... ... @@ -528,7 +528,6 @@
528 528  
529 529  
530 530  
531 -
532 532  === 2.6.4  AU915-928(AU915) ===
533 533  
534 534  (((
... ... @@ -685,7 +685,6 @@
685 685  
686 686  
687 687  
688 -
689 689  === 2.6.6  KR920-923 (KR920) ===
690 690  
691 691  (((
... ... @@ -758,7 +758,6 @@
758 758  
759 759  
760 760  
761 -
762 762  === 2.6.7  IN865-867 (IN865) ===
763 763  
764 764  (((
... ... @@ -795,18 +795,21 @@
795 795  
796 796  
797 797  
798 -
799 799  == 2.7  LED Indicator ==
800 800  
801 -The LLDS12 has an internal LED which is to show the status of different state.
804 +The LDDS75 has an internal LED which is to show the status of different state.
802 802  
803 -* The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.
806 +
807 +* Blink once when device power on.
808 +* The device detects the sensor and flashes 5 times.
809 +* Solid ON for 5 seconds once device successful Join the network.
804 804  * Blink once when device transmit a packet.
805 805  
812 +
806 806  == 2.8  ​Firmware Change Log ==
807 807  
808 808  
809 -**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/]]
816 +**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/]]
810 810  
811 811  
812 812  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
... ... @@ -813,71 +813,58 @@
813 813  
814 814  
815 815  
816 -= 3.  LiDAR ToF Measurement =
823 +== 2.9  Mechanical ==
817 817  
818 -== 3.1 Principle of Distance Measurement ==
819 819  
820 -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.
826 +[[image:image-20220610172003-1.png]]
821 821  
822 -[[image:1654831757579-263.png]]
828 +[[image:image-20220610172003-2.png]]
823 823  
824 824  
831 +== 2.10  Battery Analysis ==
825 825  
826 -== 3.2 Distance Measurement Characteristics ==
833 +=== 2.10.1  Battery Type ===
827 827  
828 -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:
835 +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.
829 829  
830 -[[image:1654831774373-275.png]]
831 831  
838 +The battery related documents as below:
832 832  
833 -(((
834 -(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
840 +* (((
841 +[[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
835 835  )))
836 -
837 -(((
838 -(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
843 +* (((
844 +[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
839 839  )))
840 -
841 -(((
842 -(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
846 +* (((
847 +[[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]]
843 843  )))
844 844  
850 + [[image:image-20220610172400-3.png]]
845 845  
846 -(((
847 -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:
848 -)))
849 849  
850 850  
851 -[[image:1654831797521-720.png]]
854 +=== 2.10.2  Replace the battery ===
852 852  
856 +(((
857 +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.
858 +)))
853 853  
854 854  (((
855 -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.
861 +
856 856  )))
857 857  
858 -[[image:1654831810009-716.png]]
859 -
860 -
861 861  (((
862 -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.
865 +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)
863 863  )))
864 864  
865 865  
866 866  
867 -== 3.3 Notice of usage: ==
870 += 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
868 868  
869 -Possible invalid /wrong reading for LiDAR ToF tech:
870 -
871 -* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
872 -* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might wrong.
873 -* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
874 -* The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
875 -
876 -= 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
877 -
878 878  (((
879 879  (((
880 -Use can configure LLDS12 via AT Command or LoRaWAN Downlink.
874 +Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
881 881  )))
882 882  )))
883 883  
... ... @@ -898,7 +898,7 @@
898 898  )))
899 899  
900 900  (((
901 -There are two kinds of commands to configure LLDS12, they are:
895 +There are two kinds of commands to configure LDDS75, they are:
902 902  )))
903 903  )))
904 904  
... ... @@ -939,55 +939,49 @@
939 939  
940 940  * (((
941 941  (((
942 -(% style="color:#4f81bd" %)** Commands special design for LLDS12**
936 +(% style="color:#4f81bd" %)** Commands special design for LDDS75**
943 943  )))
944 944  )))
945 945  
946 946  (((
947 947  (((
948 -These commands only valid for LLDS12, as below:
942 +These commands only valid for LDDS75, as below:
949 949  )))
950 950  )))
951 951  
952 952  
953 953  
954 -== 4.1  Set Transmit Interval Time ==
948 +== 3.1  Access AT Commands ==
955 955  
956 -Feature: Change LoRaWAN End Node Transmit Interval.
950 +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.
957 957  
958 -(% style="color:#037691" %)**AT Command: AT+TDC**
952 +[[image:image-20220610172924-4.png||height="483" width="988"]]
959 959  
960 -[[image:image-20220607171554-8.png]]
961 961  
955 +Or if you have below board, use below connection:
962 962  
963 -(((
964 -(% style="color:#037691" %)**Downlink Command: 0x01**
965 -)))
966 966  
967 -(((
968 -Format: Command Code (0x01) followed by 3 bytes time value.
969 -)))
958 +[[image:image-20220610172924-5.png]]
970 970  
971 -(((
972 -If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
973 -)))
974 974  
975 -* (((
976 -Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
977 -)))
978 -* (((
979 -Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
980 -)))
961 +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:
981 981  
982 -== 4.2  Set Interrupt Mode ==
983 983  
984 -Feature, Set Interrupt mode for GPIO_EXIT.
964 + [[image:image-20220610172924-6.png||height="601" width="860"]]
985 985  
986 -(% style="color:#037691" %)**AT Command: AT+INTMOD**
987 987  
988 -[[image:image-20220610105806-2.png]]
989 989  
968 +== 3.2  Set Transmit Interval Time ==
990 990  
970 +Feature: Change LoRaWAN End Node Transmit Interval.
971 +
972 +(% style="color:#037691" %)**AT Command: AT+TDC**
973 +
974 +[[image:image-20220610173409-7.png]]
975 +
976 +
977 +
978 +
991 991  (((
992 992  (% style="color:#037691" %)**Downlink Command: 0x06**
993 993  )))
... ... @@ -1007,7 +1007,7 @@
1007 1007  Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1008 1008  )))
1009 1009  
1010 -== 4.3  Get Firmware Version Info ==
998 +== 3.3  Get Firmware Version Info ==
1011 1011  
1012 1012  Feature: use downlink to get firmware version.
1013 1013  
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