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Version 42.31 by Xiaoling on 2023/01/31 16:53
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1 [[image:image-20230131115217-1.png]]
2
3
4
5 **Table of Contents：**
6
7 {{toc/}}
8
9
10
11
12
13
14 = 1. Introduction =
15
16 == 1.1 What is LoRaWAN Pressure Sensor ==
17
18
19 (((
20 The Dragino PS-LB series sensors are (% style="color:blue" %)**LoRaWAN Pressure Sensor**(%%) for Internet of Things solution. PS-LB can measure Air, Water pressure and liquid level and upload the sensor data via wireless to LoRaWAN IoT server.
21 )))
22
23 (((
24 The PS-LB series sensors include (% style="color:blue" %)**Thread Installation Type**(%%) and (% style="color:blue" %)**Immersion Type**(%%), it supports different pressure range which can be used for different measurement requirement.
25 )))
26
27 (((
28 The LoRa wireless technology used in PS-LB 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.
29 )))
30
31 (((
32 PS-LB supports BLE configure and wireless OTA update which make user easy to use.
33 )))
34
35 (((
36 PS-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
37 )))
38
39 (((
40 Each PS-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.
41 )))
42
43 [[image:1675071321348-194.png]]
44
45
46
47 == 1.2 ​Features ==
48
49
50 * LoRaWAN 1.0.3 Class A
51 * Ultra-low power consumption
52 * Measure air / gas or water pressure
53 * Different pressure range available
54 * Thread Installation Type or Immersion Type
55 * Monitor Battery Level
56 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
57 * Support Bluetooth v5.1 and LoRaWAN remote configure
58 * Support wireless OTA update firmware
59 * Uplink on periodically
60 * Downlink to change configure
61 * 8500mAh Battery for long term use
62
63 == 1.3 Specification ==
64
65
66 (% style="color:#037691" %)**Micro Controller:**
67
68 * MCU: 48Mhz ARM
69 * Flash: 256KB
70 * RAM: 64KB
71
72 (% style="color:#037691" %)**Common DC Characteristics:**
73
74 * Supply Voltage: 2.5v ~~ 3.6v
75 * Operating Temperature: -40 ~~ 85°C
76
77 (% style="color:#037691" %)**LoRa Spec:**
78
79 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
80 * Max +22 dBm constant RF output vs.
81 * RX sensitivity: down to -139 dBm.
82 * Excellent blocking immunity
83
84 (% style="color:#037691" %)**Current Input Measuring :**
85
86 * Range: 0 ~~ 20mA
87 * Accuracy: 0.02mA
88 * Resolution: 0.001mA
89
90 (% style="color:#037691" %)**Voltage Input Measuring:**
91
92 * Range: 0 ~~ 30v
93 * Accuracy: 0.02v
94 * Resolution: 0.001v
95
96 (% style="color:#037691" %)**Battery:**
97
98 * Li/SOCI2 un-chargeable battery
99 * Capacity: 8500mAh
100 * Self-Discharge: <1% / Year @ 25°C
101 * Max continuously current: 130mA
102 * Max boost current: 2A, 1 second
103
104 (% style="color:#037691" %)**Power Consumption**
105
106 * Sleep Mode: 5uA @ 3.3v
107 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
108
109 == 1.4 Probe Types ==
110
111 === 1.4.1 Thread Installation Type ===
112
113
114 [[image:1675071448299-229.png]]
115
116 * Hersman Pressure Transmitter
117 * Measuring Range: -0.1 ~~ 0 ~~ 60MPa, see order info.
118 * Accuracy: 0.2% F.S
119 * Long-Term Stability: 0.2% F.S ±0.05%
120 * Overload 200% F.S
121 * Zero Temperature Drift: 0.03% FS/℃(≤100Kpa), 0.02%FS/℃(＞100Kpa)
122 * FS Temperature Drift: 0.003% FS/℃(≤100Kpa), 0.002%FS/℃(＞100Kpa)
123 * Storage temperature: -30℃~~80℃
124 * Operating temperature: -20℃~~60℃
125 * Connector Type: Various Types, see order info
126
127 === 1.4.2 Immersion Type ===
128
129
130 [[image:1675071521308-426.png]]
131
132 * Immersion Type, Probe IP Level: IP68
133 * Measuring Range: Measure range can be customized, up to 100m.
134 * Accuracy: 0.2% F.S
135 * Long-Term Stability: ±0.2% F.S / Year
136 * Overload 200% F.S
137 * Zero Temperature Drift: ±2% F.S)
138 * FS Temperature Drift: ±2% F.S
139 * Storage temperature: -30℃~~80℃
140 * Operating temperature: -40℃~~85℃
141 * Material: 316 stainless steels
142
143 == 1.5 Probe Dimension ==
144
145
146
147
148 == 1.6 Application and Installation ==
149
150 === 1.6.1 Thread Installation Type ===
151
152
153 (% style="color:blue" %)**Application:**
154
155 * Hydraulic Pressure
156 * Petrochemical Industry
157 * Health and Medical
158 * Food & Beverage Processing
159 * Auto-controlling house
160 * Constant Pressure Water Supply
161 * Liquid Pressure measuring
162
163 Order the suitable thread size and install to measure the air / liquid pressure
164
165 [[image:1675071670469-145.png]]
166
167
168 === 1.6.2 Immersion Type ===
169
170
171 (% style="color:blue" %)**Application:**
172
173 Liquid & Water Pressure / Level detect.
174
175 [[image:1675071725288-579.png]]
176
177
178 The Immersion Type pressure sensor is shipped with the probe and device separately. When user got the device, below is the wiring to for connect the probe to the device.
179
180
181 [[image:1675071736646-450.png]]
182
183
184 [[image:1675071776102-240.png]]
185
186
187 == 1.7 Sleep mode and working mode ==
188
189
190 (% 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.
191
192 (% 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.
193
194
195 == 1.8 Button & LEDs ==
196
197
198 [[image:1675071855856-879.png]]
199
200
201 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)
202 |=(% style="width: 150px;" %)**Behavior on ACT**|=(% style="width: 90px;" %)**Function**|=**Action**
203 |(% style="width:260px" %)Pressing ACT between 1s < time < 3s|(% style="width:100px" %)Send an uplink|(((
204 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
205 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
206 )))
207 |(% style="width:138px" %)Pressing ACT for more than 3s|(% style="width:100px" %)Active Device|(((
208 (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network.
209 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
210 Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.
211 )))
212 |(% style="width:138px" %)Fast press ACT 5 times.|(% style="width:100px" %)Deactivate Device|red led will solid on for 5 seconds. Means PS-LB is in Deep Sleep Mode.
213
214 == 1.9 Pin Mapping ==
215
216
217 [[image:1675072568006-274.png]]
218
219
220 == 1.10 BLE connection ==
221
222
223 PS-LB support BLE remote configure.
224
225
226 BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:
227
228 * Press button to send an uplink
229 * Press button to active device.
230 * Device Power on or reset.
231
232 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
233
234
235 == 1.11 Mechanical ==
236
237
238
239
240 [[image:1675143884058-338.png]]
241
242
243 [[image:1675143899218-599.png]]
244
245
246 [[image:1675143909447-639.png]]
247
248
249 = 2. Configure PS-LB to connect to LoRaWAN network =
250
251 == 2.1 How it works ==
252
253
254 The PS-LB is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and activate the PS-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
255
256
257
258 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
259
260
261 Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.
262
263
264 [[image:1675144005218-297.png]]
265
266
267 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.
268
269
270 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from PS-LB.
271
272 Each PS-LB is shipped with a sticker with the default device EUI as below:
273
274 [[image:image-20230131134744-2.jpeg]]
275
276
277
278 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
279
280
281 (% style="color:blue" %)**Register the device**
282
283 [[image:1675144099263-405.png]]
284
285
286 (% style="color:blue" %)**Add APP EUI and DEV EUI**
287
288 [[image:1675144117571-832.png]]
289
290
291 (% style="color:blue" %)**Add APP EUI in the application**
292
293
294 [[image:1675144143021-195.png]]
295
296
297 (% style="color:blue" %)**Add APP KEY**
298
299 [[image:1675144157838-392.png]]
300
301 (% style="color:blue" %)**Step 2:**(%%) Activate on PS-LB
302
303
304 Press the button for 5 seconds to activate the PS-LB.
305
306 (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
307
308 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
309
310
311
312 == 2.3 ​Uplink Payload ==
313
314
315 Uplink payloads have two types:
316
317 * Distance Value: Use FPORT=2
318 * Other control commands: Use other FPORT fields.
319
320 The application server should parse the correct value based on FPORT settings.
321
322
323 === 2.3.1 Device Status, FPORT~=5 ===
324
325
326 Include device configure status. Once PS-LB Joined the network, it will uplink this message to the server.
327
328 Users can also use the downlink command(0x26 01) to ask PS-LB to resend this uplink.
329
330
331 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)
332 |(% colspan="6" %)**Device Status (FPORT=5)**
333 |(% style="width:103px" %)**Size (bytes)**|(% style="width:72px" %)**1**|**2**|**1**|**1**|**2**
334 |(% style="width:103px" %)**Value**|(% style="width:72px" %)Sensor Model|Firmware Version|Frequency Band|Sub-band|BAT
335
336 Example parse in TTNv3
337
338 [[image:1675144504430-490.png]]
339
340
341 (% style="color:#037691" %)**Sensor Model**(%%): For PS-LB, this value is 0x16
342
343 (% style="color:#037691" %)**Firmware Version**(%%): 0x0100, Means: v1.0.0 version
344
345 (% style="color:#037691" %)**Frequency Band**:
346
347 *0x01: EU868
348
349 *0x02: US915
350
351 *0x03: IN865
352
353 *0x04: AU915
354
355 *0x05: KZ865
356
357 *0x06: RU864
358
359 *0x07: AS923
360
361 *0x08: AS923-1
362
363 *0x09: AS923-2
364
365 *0x0a: AS923-3
366
367 *0x0b: CN470
368
369 *0x0c: EU433
370
371 *0x0d: KR920
372
373 *0x0e: MA869
374
375
376 (% style="color:#037691" %)**Sub-Band**:
377
378 AU915 and US915:value 0x00 ~~ 0x08
379
380 CN470: value 0x0B ~~ 0x0C
381
382 Other Bands: Always 0x00
383
384
385 (% style="color:#037691" %)**Battery Info**:
386
387 Check the battery voltage.
388
389 Ex1: 0x0B45 = 2885mV
390
391 Ex2: 0x0B49 = 2889mV
392
393
394 === 2.3.2 Sensor value, FPORT~=2 ===
395
396
397 Uplink payload includes in total 9 bytes.
398
399
400 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)
401 |(% style="width:97px" %)(((
402 **Size(bytes)**
403 )))|(% style="width:48px" %)**2**|(% style="width:71px" %)**2**|(% style="width:98px" %)**2**|(% style="width:73px" %)**2**|(% style="width:122px" %)**1**
404 |(% style="width:97px" %)**Value**|(% style="width:48px" %)[[BAT>>||anchor="H2.3.3BatteryInfo"]]|(% style="width:71px" %)[[Probe Model>>||anchor="H2.3.4ProbeModel"]]|(% style="width:98px" %)[[0 ~~~~ 20mA value>>||anchor="H2.3.507E20mAvalue28IDC_IN29"]]|(% style="width:73px" %)[[0 ~~~~ 30v value>>||anchor="H2.3.607E30Vvalue28pinVDC_IN29"]]|(% style="width:122px" %)[[IN1 &IN2 Interrupt  flag>>||anchor="H2.3.7IN126IN226INTpin"]]
405
406 [[image:1675144608950-310.png]]
407
408
409
410 === 2.3.3 Battery Info ===
411
412
413 Check the battery voltage for PS-LB.
414
415 Ex1: 0x0B45 = 2885mV
416
417 Ex2: 0x0B49 = 2889mV
418
419
420 === 2.3.4 Probe Model ===
421
422
423 PS-LB has different kind of probe, 0~~20mA represent the full scale of the measuring range. So a 15mA output means different meaning for different probe. 
424
425
426 For example.
427
428 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)
429 |(% style="width:111px" %)**Part Number**|(% style="width:158px" %)**Probe Used**|**0~~20mA scale**|**Example: 10mA meaning**
430 |(% style="width:111px" %)PS-LB-I3|(% style="width:158px" %)immersion type with 3 meters cable|0~~3 meters|1.5 meters pure water
431 |(% style="width:111px" %)PS-LB-I5|(% style="width:158px" %)immersion type with 5 meters cable|0~~5 meters|2.5 meters pure water
432
433 The probe model field provides the convenient for server to identical how it should parse the 0~~20mA sensor value and get the correct value.
434
435
436 === 2.3.5 0~~20mA value (IDC_IN) ===
437
438
439 The output value from Pressure Probe, use together with Probe Model to get the pressure value or water level.
440
441 (% style="color:#037691" %)**Example**:
442
443 27AE(H) = 10158 (D)/1000 = 10.158mA.
444
445
446 === 2.3.6 0~~30V value ( pin VDC_IN) ===
447
448
449 Measure the voltage value. The range is 0 to 30V.
450
451 (% style="color:#037691" %)**Example**:
452
453 138E(H) = 5006(D)/1000= 5.006V
454
455
456 === 2.3.7 IN1&IN2&INT pin ===
457
458
459 IN1 and IN2 are used as digital input pins.
460
461 (% style="color:#037691" %)**Example**:
462
463 09 (H): (0x09&0x08)>>3=1    IN1 pin is high level.
464
465 09 (H): (0x09&0x04)>>2=0    IN2 pin is low level.
466
467
468 This data field shows if this packet is generated by (% style="color:blue" %)**Interrupt Pin** (%%)or not. [[Click here>>||anchor="H3.2SetInterruptMode"]] for the hardware and software set up. Note: The Internet Pin is a separate pin in the screw terminal.
469
470 (% style="color:#037691" %)**Example:**
471
472 09 (H): (0x09&0x02)>>1=1    The level of the interrupt pin.
473
474 09 (H): 0x09&0x01=1              0x00: Normal uplink packet.
475
476 0x01: Interrupt Uplink Packet.
477
478
479 === 2.3.8 ​Decode payload in The Things Network ===
480
481
482 While using TTN network, you can add the payload format to decode the payload.
483
484
485 [[image:1675144839454-913.png]]
486
487
488 PS-LB TTN Payload Decoder: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>url:https://github.com/dragino/dragino-end-node-decoder]]
489
490
491 == 2.4 Uplink Interval ==
492
493
494 The PS-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: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H4.1ChangeUplinkInterval>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H4.1ChangeUplinkInterval||style="background-color: rgb(255, 255, 255);"]]
495
496
497 == 2.5 Show Data in DataCake IoT Server ==
498
499
500 [[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
501
502
503 (% style="color:blue" %)**Step 1: **(%%)Be sure that your device is programmed and properly connected to the network at this time.
504
505 (% style="color:blue" %)**Step 2:**(%%) To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:
506
507
508 [[image:1675144951092-237.png]]
509
510
511 [[image:1675144960452-126.png]]
512
513
514 (% style="color:blue" %)**Step 3:**(%%) Create an account or log in Datacake.
515
516 (% style="color:blue" %)**Step 4:** (%%)Create PS-LB product.
517
518 [[image:1675145004465-869.png]]
519
520
521 [[image:1675145018212-853.png]]
522
523
524
525
526 [[image:1675145029119-717.png]]
527
528
529 (% style="color:blue" %)**Step 5: **(%%)add payload decode
530
531 [[image:1675145051360-659.png]]
532
533
534 [[image:1675145060812-420.png]]
535
536
537
538 After added, the sensor data arrive TTN, it will also arrive and show in Datacake.
539
540
541 [[image:1675145081239-376.png]]
542
543
544 == 2.6 Frequency Plans ==
545
546
547 The PS-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
548
549 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
550
551
552 == 2.7 ​Firmware Change Log ==
553
554
555 **Firmware download link:**
556
557 [[https:~~/~~/www.dropbox.com/sh/gf1glloczbzz19h/AABbuYI4WY6VdAmpXo6o1V2Ka?dl=0>>url:https://www.dropbox.com/sh/gf1glloczbzz19h/AABbuYI4WY6VdAmpXo6o1V2Ka?dl=0]]
558
559
560
561 = 3. Configure PS-LB via AT Command or LoRaWAN Downlink =
562
563
564 Use can configure PS-LB via AT Command or LoRaWAN Downlink.
565
566 * AT Command Connection: See [[FAQ>>||anchor="H7.FAQ"]].
567 * LoRaWAN Downlink instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
568
569 There are two kinds of commands to configure PS-LB, they are:
570
571 * (% style="color:#037691" %)**General Commands**.
572
573 These commands are to configure:
574
575 * General system settings like: uplink interval.
576 * LoRaWAN protocol & radio related command.
577
578 They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
579
580 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
581
582
583 * (% style="color:#037691" %)**Commands special design for PS-LB**
584
585 These commands only valid for PS-LB, as below:
586
587
588 == 3.1 Set Transmit Interval Time ==
589
590
591 Feature: Change LoRaWAN End Node Transmit Interval.
592
593 (% style="color:blue" %)**AT Command: AT+TDC**
594
595 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)
596 |=(% style="width: 156px;" %)**Command Example**|=(% style="width: 137px;" %)**Function**|=**Response**
597 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
598 30000
599 OK
600 the interval is 30000ms = 30s
601 )))
602 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
603 OK
604 Set transmit interval to 60000ms = 60 seconds
605 )))
606
607 (% style="color:blue" %)**Downlink Command: 0x01**
608
609 Format: Command Code (0x01) followed by 3 bytes time value.
610
611 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
612
613 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
614 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
615
616 == 3.2 Set Interrupt Mode ==
617
618
619 Feature, Set Interrupt mode for GPIO_EXIT.
620
621 (% style="color:blue" %)**AT Command: AT+INTMOD**
622
623 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)
624 |=**Command Example**|=**Function**|=**Response**
625 |AT+INTMOD=?|Show current interrupt mode|(((
626 0
627 OK
628 the mode is 0 = No interruption
629 )))
630 |AT+INTMOD=2|(((
631 Set Transmit Interval
632 ~1. (Disable Interrupt),
633 2. (Trigger by rising and falling edge)
634 3. (Trigger by falling edge)
635 4. (Trigger by rising edge)
636 )))|OK
637
638 (% style="color:blue" %)**Downlink Command: 0x06**
639
640 Format: Command Code (0x06) followed by 3 bytes.
641
642 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
643
644 * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
645 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
646
647 == 3.3 Set the output time ==
648
649
650 Feature, Control the output 3V3 , 5V or 12V.
651
652 (% style="color:blue" %)**AT Command: AT+3V3T**
653
654 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:474px" %)
655 |=(% style="width: 154px;" %)**Command Example**|=(% style="width: 201px;" %)**Function**|=(% style="width: 116px;" %)**Response**
656 |(% style="width:154px" %)AT+3V3T=?|(% style="width:201px" %)Show 3V3 open time.|(% style="width:116px" %)(((
657 0
658 OK
659 )))
660 |(% style="width:154px" %)AT+3V3T=0|(% style="width:201px" %)Normally open 3V3 power supply.|(% style="width:116px" %)(((
661 OK
662 default setting
663 )))
664 |(% style="width:154px" %)AT+3V3T=1000|(% style="width:201px" %)Close after a delay of 1000 milliseconds.|(% style="width:116px" %)(((
665 OK
666 )))
667 |(% style="width:154px" %)AT+3V3T=65535|(% style="width:201px" %)Normally closed 3V3 power supply.|(% style="width:116px" %)(((
668 OK
669 )))
670
671 (% style="color:blue" %)**AT Command: AT+5VT**
672
673 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:470px" %)
674 |=(% style="width: 155px;" %)**Command Example**|=(% style="width: 196px;" %)**Function**|=(% style="width: 114px;" %)**Response**
675 |(% style="width:155px" %)AT+5VT=?|(% style="width:196px" %)Show 5V open time.|(% style="width:114px" %)(((
676 0
677 OK
678 )))
679 |(% style="width:155px" %)AT+5VT=0|(% style="width:196px" %)Normally closed 5V power supply.|(% style="width:114px" %)(((
680 OK
681 default setting
682 )))
683 |(% style="width:155px" %)AT+5VT=1000|(% style="width:196px" %)Close after a delay of 1000 milliseconds.|(% style="width:114px" %)(((
684 OK
685 )))
686 |(% style="width:155px" %)AT+5VT=65535|(% style="width:196px" %)Normally open 5V power supply.|(% style="width:114px" %)(((
687 OK
688 )))
689
690 (% style="color:blue" %)**AT Command: AT+12VT**
691
692 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:443px" %)
693 |=(% style="width: 156px;" %)**Command Example**|=(% style="width: 199px;" %)**Function**|=(% style="width: 83px;" %)**Response**
694 |(% style="width:156px" %)AT+12VT=?|(% style="width:199px" %)Show 12V open time.|(% style="width:83px" %)(((
695 0
696 OK
697 )))
698 |(% style="width:156px" %)AT+12VT=0|(% style="width:199px" %)Normally closed 12V power supply.|(% style="width:83px" %)OK
699 |(% style="width:156px" %)AT+12VT=500|(% style="width:199px" %)Close after a delay of 500 milliseconds.|(% style="width:83px" %)(((
700 OK
701 )))
702
703 (% style="color:blue" %)**Downlink Command: 0x07**
704
705 Format: Command Code (0x07) followed by 3 bytes.
706
707 The first byte is which power, the second and third bytes are the time to turn on.
708
709 * Example 1: Downlink Payload: 070101F4  -> AT+3V3T=500
710 * Example 2: Downlink Payload: 0701FFFF   -> AT+3V3T=65535
711 * Example 3: Downlink Payload: 070203E8  -> AT+5VT=1000
712 * Example 4: Downlink Payload: 07020000  -> AT+5VT=0
713 * Example 5: Downlink Payload: 070301F4  -> AT+12VT=500
714 * Example 6: Downlink Payload: 07030000  -> AT+12VT=0
715
716 == 3.4 Set the Probe Model ==
717
718
719 (% style="color:blue" %)**AT Command: AT** **+PROBE**
720
721 (% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:448px" %)
722 |=(% style="width: 154px;" %)**Command Example**|=(% style="width: 204px;" %)**Function**|=(% style="width: 85px;" %)**Response**
723 |(% style="width:154px" %)AT +PROBE =?|(% style="width:204px" %)Get or Set the probe model.|(% style="width:85px" %)(((
724 0
725 OK
726 )))
727 |(% style="width:154px" %)AT +PROBE =0003|(% style="width:204px" %)Set water depth sensor mode, 3m type.|(% style="width:85px" %)OK
728 |(% style="width:154px" %)AT +PROBE =0101|(% style="width:204px" %)Set pressure transmitters mode, first type.|(% style="width:85px" %)(((
729 OK
730 )))
731 |(% style="width:154px" %)AT +PROBE =0000|(% style="width:204px" %)Initial state, no settings.|(% style="width:85px" %)(((
732 OK
733 )))
734
735 (% style="color:blue" %)**Downlink Command: 0x08**
736
737 Format: Command Code (0x08) followed by 2 bytes.
738
739 * Example 1: Downlink Payload: 080003  -> AT+PROBE=0003
740 * Example 2: Downlink Payload: 080101  -> AT+PROBE=0101
741
742 = 4. Battery & how to replace =
743
744 == 4.1 Battery Type ==
745
746
747 PS-LB is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>https://www.dropbox.com/sh/w9l2oa3ytpculph/AAAPtt-apH4lYfCj-2Y6lHvQa?dl=0]]. 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.
748
749
750 The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
751
752 [[image:1675146710956-626.png]]
753
754
755 Minimum Working Voltage for the PS-LB:
756
757 PS-LB:  2.45v ~~ 3.6v
758
759
760 == 4.2 Replace Battery ==
761
762
763 Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.
764
765 And make sure the positive and negative pins match.
766
767
768 == 4.3 Power Consumption Analyze ==
769
770
771 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.
772
773
774 Instruction to use as below:
775
776
777 (% style="color:blue" %)**Step 1:**(%%) Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
778
779 [[https:~~/~~/www.dropbox.com/sh/zwex6i331j5oeq2/AACIMf9f_v2qsJ39CuMQ5Py_a?dl=0>>https://www.dropbox.com/sh/zwex6i331j5oeq2/AACIMf9f_v2qsJ39CuMQ5Py_a?dl=0]]
780
781
782 (% style="color:blue" %)**Step 2:**(%%) Open it and choose
783
784 * Product Model
785 * Uplink Interval
786 * Working Mode
787
788 And the Life expectation in difference case will be shown on the right.
789
790 [[image:1675146895108-304.png]]
791
792
793 The battery related documents as below:
794
795 * [[Battery Dimension>>https://www.dropbox.com/s/ox5g9njwjle7aw3/LSN50-Battery-Dimension.pdf?dl=0]],
796 * [[Lithium-Thionyl Chloride Battery datasheet, Tech Spec>>https://www.dropbox.com/sh/d4oyfnp8o94180o/AABQewCNSh5GPeQH86UxRgQQa?dl=0]]
797 * [[Lithium-ion Battery-Capacitor datasheet>>https://www.dropbox.com/s/791gjes2lcbfi1p/SPC_1520_datasheet.jpg?dl=0]], [[Tech Spec>>https://www.dropbox.com/s/4pkepr9qqqvtzf2/SPC1520%20Technical%20Specification20171123.pdf?dl=0]]
798
799 [[image:image-20230131145708-3.png]]
800
801
802 === 4.3.1 ​Battery Note ===
803
804
805 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.
806
807
808 === 4.3.2 Replace the battery ===
809
810
811 You can change the battery in the PS-LB.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.
812
813 The default battery pack of PS-LB 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)
814
815
816 = 5. Remote Configure device =
817
818 == 5.1 Connect via BLE ==
819
820
821 Please see this instruction for how to configure via BLE: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]]
822
823
824 == 5.2 AT Command Set ==
825
826
827
828 = 6. OTA firmware update =
829
830
831 Please see this link for how to do OTA firmware update: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]
832
833
834 = 7. FAQ =
835
836 == 7.1 How to use AT Command to access device? ==
837
838
839 See: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]
840
841
842 == 7.2 How to update firmware via UART port? ==
843
844
845 See: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]
846
847
848 == 7.3 How to change the LoRa Frequency Bands/Region? ==
849
850
851 You can follow the instructions for [[how to upgrade image>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]].
852 When downloading the images, choose the required image file for download. ​
853
854
855 = 8. Order Info =
856
857
858 [[image:image-20230131153105-4.png]]
859
860
861 = 9. ​Packing Info =
862
863
864 (% style="color:#037691" %)**Package Includes**:
865
866 * PS-LB LoRaWAN Pressure Sensor
867
868 (% style="color:#037691" %)**Dimension and weight**:
869
870 * Device Size: cm
871 * Device Weight: g
872 * Package Size / pcs : cm
873 * Weight / pcs : g
874
875 = 10. Support =
876
877
878 * 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.
879
880 * 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]]
881
882