Last modified by Bei Jinggeng on 2024/08/02 17:52
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From version < 104.1 >
edited by Bei Jinggeng
on 2024/03/30 17:44
To version < 99.32 >
edited by Xiaoling
on 2024/01/18 13:36
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1 -LSPH01 -- LoRaWAN Soil pH Sensor User Manual
1 +LSPH01-LoRaWAN Soil pH Sensor User Manual
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1 -XWiki.Bei
1 +XWiki.Xiaoling
Content
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462 462  == 2.7 Calibration ==
463 463  
464 464  
465 -(% style="color:blue" %)**Step1 :**(%%)** Clean probe**
466 -
467 -user can use high grade sandpaper to polish it or put in 5% hydrochloric acid for several minutes. After the metal probe looks new, users can clean it to remove hydrochloric acid or other liquids from the surface.
468 -
469 -(% style="color:blue" %)**Step2 :**(%%)** Immerse the sensor in ph buffer solution to make the sensor values stable**
470 -
471 471  (((
472 472  User can do calibration for the probe. It is limited to use below pH buffer solution to calibrate: 4.00, 6.86, 9.18. When calibration, user need to clean the electrode and put the probe in the pH buffer solution to wait the value stable ( a new clean electrode might need max 24 hours to be stable).
473 -
474 -(% style="color:red" %)**Note: Only one ph buffer with one of the ph values needs to be calibrated during calibration. Wait for the sensor measurement value to be stable, it does not need to be the same as the ph marked by the ph buffer**
475 -
476 -
477 -(% style="color:blue" %)**Step3 :**(%%)** The numerically stable sensors were calibrated using commands**
478 478  )))
479 479  
480 480  (((
481 - User can use below command to calibrate.
470 +After stable, user can use below command to calibrate.
482 482  
483 483  (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
484 -|(% style="background-color:#4f81bd; color:white; width:120px" %)**pH buffer solution**|(% style="background-color:#4f81bd; color:white; width:150px" %)**AT Command to calibrate**|(% style="background-color:#4f81bd; color:white; width:145px" %)**Downlink Command**|(% style="background-color:#4f81bd; color:white; width:95px" %)**Read Cal Value**
473 +|(% style="background-color:#4f81bd; color:white; width:115px" %)**pH buffer solution**|(% style="background-color:#4f81bd; color:white; width:145px" %)**AT Command to calibrate**|(% style="background-color:#4f81bd; color:white; width:150px" %)**Downlink Command**|(% style="background-color:#4f81bd; color:white; width:100px" %)**Read Cal Value**
485 485  |(% style="width:149px" %)4.00|(% style="width:197px" %)AT+PHCAL=4|(% style="width:206px" %)(((
486 486  0x13 04
487 487  Reply with Calibrate payload
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506 506  )))
507 507  )))
508 508  
509 -To use the AT COMMAND, refer to this link:
510 510  
511 -* AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
512 -
513 -* AT Command via UART Connection : See [[UART Connection>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
514 -
515 -To use Downlink, take TTN as an example, please refer to this link:
516 -
517 -* LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>url:http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
518 -
519 -When the command is successfully used, the node sends a uplink.
520 -This is the payload for uplink
521 -
522 522  (% style="color:#037691" %)**Calibration Payload**
523 523  
524 524  (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
525 525  |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
526 526  **Size(bytes)**
527 -)))|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**7**|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**1**
504 +)))|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**7**|=(% style="width:90px;background-color:#4F81BD;color:white" %)**1**
528 528  |Value|(((
529 529  PH4 Calibrate value
530 530  )))|PH6.86 Calibrate value|(((
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544 544  
545 545  * Reply to non-confirmed packet: 14 00
546 546  
547 -(% style="color:blue" %)**Step4 : **(%%)**After the calibration is completed, its measurement results in this ph buffer solution should be consistent with the numerical value of the command used in the calibration.**
548 -
549 -Examples:
550 -After using the command AT+PH=9 in 9.18ph buffer
551 -The readout returned by the sensor in 9.18ph buffer should be pH=9
552 -
553 -
554 554  == 2.8 Frequency Plans ==
555 555  
556 556  
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1244 1244  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.
1245 1245  
1246 1246  
1247 -== 5.3 Possible reasons why the device is unresponsive： ==
1248 -
1249 -
1250 -​1. Check whether the battery voltage is lower than 2.8V
1251 -2. Check whether the jumper of the device is correctly connected
1252 -
1253 -[[image:image-20240330174400-2.png]]
1254 -3. Check whether the switch here of the device is at the ISP（The switch can operate normally only when it is in RUN）
1255 -
1256 -[[image:image-20240330174406-3.png]]
1257 -​
1258 -
1259 -(% class="wikigeneratedid" %)
1260 -= =
1261 -
1262 1262  = 8. Order Info =
1263 1263  
1264 1264  
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