SMART WAREHOUSE DEVICE, TECHNICAL GUIDE
TECHNICAL GUIDE v2.6 Table of Content 1. 2. 3. 4. Introduction .............................................................................................................. 2 General and safety information ............................................................................... 3 Contact Information ................................................................................................. 4 Device Description ..................................................................................
TECHNICAL GUIDE v2.6 1. Introduction This guide explains the features related to the product Smart Warehouse Device and contains all the information necessary to perform the installation, use and maintenance of the Smart Warehouse Device. It is recommended to read this manual carefully to understand the principle of operation of the equipment and reduce possible damage or malfunction of the system.
TECHNICAL GUIDE v2.6 2. General and safety information Please, read carefully this section before installing and using Smart Warehouse Device: - In document, the term Smart Warehouse Device encompasses both the - - - - MTU and the RTU unit with their sensors. Please read carefully this document. NEVER submerge the device in any liquid. Keep the device in a dry place and away from any liquids that might spill.
TECHNICAL GUIDE v2.6 - If Device needs to be returned, please send it completely dry and free from contaminants. DO NOT TRY TO RECHARGE THE NON-RECHARGEABLE BATTERIES, IT MAY EXPLODE AND CAUSE INJURIES AND DESTROY THE EQUIPMENT. USE NON-RECHARGEABLE BATTERIES ONLY WITH DEVICES PROPERLY PREPARED. PLEASE DOUBLE CHECK THIS CONDITION BEFORE CONNECTING THE DEVICE ALL OPERATORS SHOULD BE FAMILIAR WITH THE SAFETY PRECAUTIONS AND WARNINGS GIVEN IN THIS SECTION PRIOR TO ATTEMPTING TO OPERATE THE UNIT.
TECHNICAL GUIDE v2.6 4. Device Description The Smart warehouse device is capable of monitoring critical parameters in grain warehouses, such as: air temperature/humidity, air quality and stored grain temperature/moisture. All data obtained is sent to a web platform via wireless communication, which can be Sigfox ™ or LoRa ™ depending on the application desired by the end user. The whole device is shown in following figure: Figure 1.Smart Warehouse Device 4.1 General Specs Table 2.
TECHNICAL GUIDE v2.6 POLLUTION DEGREE * 4 Note that not all the devices have two radios. SigFox may not be included. Figure 2.Illustration of MTU 4.2 MTU (Master Transmitter Unit) Specs It is the main part of the device which is responsible for taking the measurements of the air (humidity, temperature and air quality -CO2-), as well as getting all the information from the RTU sensors and sending it wirelessly (LORA ™ / SIGFOX) * to the Cloud platform. * Note that not all the devices have two radios.
TECHNICAL GUIDE v2.6 - Power Supply: 3x AA batteries of 1.5Vdc. Figure 4. Batteries - LED: - State Indicator: indicates the state of the battery and frame transmission. Figure 5.Led - ON/OFF Button: To switch ON/OFF device. Table 3.ON/OFF Button POSITION OFF ON www.sgs.
TECHNICAL GUIDE v2.6 - Programming Connector: Used for uploading new firmware to the MTU [See Firmware Update Section]. Figure 6.Programming Connector - MTU External Sensors: Read Air Temperature, Humidity and CO2. Figure 7.Air Sensor - Switch: Internal switch with 6 positions for setting different configurations: - Switch 1: For selecting type of communications (LoRa / Sigfox) *. * Note that not all the devices have two radios. SigFox may not be included. Table 4.
TECHNICAL GUIDE v2.6 - Switch 2 and Switch 3: For configuring transmission interval. Table 5.Interval Configuration - SW2 SW3 INTERVAL OFF OFF 6 HOURS OFF ON 12 HOURS ON OFF 24 HOURS ON ON 48 HOURS Switch 4: configure the number of samples to be read after every frame transmission. Table 6. Number of Samples Configuration SW4 OFF ON - NUMBER OF SAMPLES 1 3 Switch 5: enable / disable CO2 sensor. Table 7.CO2 Configuration SW5 OFF ON www.sgs.
TECHNICAL GUIDE v2.6 4.3 RTU (Receiver Transmitter Unit) Specs There is three RTUs with a cable. This units get samples of stored grain temperature and moisture in three different heights. Figure 8.RTU Inside and Outside View Note that the last RTU have a ring tied to a rope in order to install the device in the warehouse. Every RTU has a sensor for getting grain temperature and moisture. The RTU sends data through RS485 interface. www.sgs.
TECHNICAL GUIDE v2.6 6. Connections For connecting RTUs to MTU a waterproof connector is used. Look at following diagram for more information: Figure 9.Connector for plugging in RTUs. www.sgs.
TECHNICAL GUIDE v2.6 7. Operating Principles Once the device has been installed in the area where the measurements are to be made, press the power button to switch on the device. After 2 seconds, the LED will flash for 10 seconds with a certain color depending on the battery level. Once the device starts, an initial sequence of frames is sent to the Cloud platform.
TECHNICAL GUIDE v2.6 8. The IoT Gateway The gateway for getting data from Smart Warehouse Device is the LPN Indoor GW (model MTCAP), which is shown in following figure: Figure 10.IoT Gateway In following figure, the architecture required for getting data is shown: Figure 11.Architecture The process is as follows: - Smart Warehouse Device gets data from sensors every configured time. - It sends data to IoT Lora Gateway. - The IoT Lora Gateway sends data to ntw server through a secured - connection.
TECHNICAL GUIDE v2.6 9. Installation The device is ready to be installed in grain warehouses. The process is as follows: - A pipe with sensors is introduced into the grain: Figure 12.Pipe into the grain - The Smart Warehouse Device is located on the top of the pipe as is shown in following image: Figure 13. Installed device - The device covers an area of 8m of diameter and 350 Tons of grain: www.sgs.
TECHNICAL GUIDE v2.6 10. Maintenance The device needs to be checked periodically by qualified inspectors. These are the check points: - LED: verify that the battery level is ok. - Measurements Integrity: Be sure that values sent to the platform are - between expected values. Connections: Be sure that connections between RTUs are in good conditions. Clean Sensors: Wipe any dirt present on the MTU sensors with a dry cloth. Make sure the device is not covered with any material.
TECHNICAL GUIDE v2.6 11. Firmware Update For updating the firmware is necessary to open the box/case. Due to this, it is necessary to carry out this process out of the grain, with no dust and humidity. Preferably in an indoor room. It can be done with any programming device compatible with STM32 microcontroller. ST-LINK v2 programmer with TC2030-IDC-NL connector is recommended. Program can be downloaded in following url: https://www.st.com/en/development-tools/stsw-link004.html Figure 14.
TECHNICAL GUIDE v2.6 Figure 16.RTU programming connector Once the software is installed and the programmer connected to the device: 1. Open STM32 ST-LINK Utility and connect the device: Figure 17. STM32 ST-LINK software tool 2. Once the device has been detected, click on the Program option: Figure 18.Programming www.sgs.
TECHNICAL GUIDE v2.6 3. After that, the .bin/.hex file must be selected. Press start in the next window: Figure 19.Select File Figure 20.Press Start www.sgs.
TECHNICAL GUIDE v2.6 4. Finally, it the update is successful, the message “Memory programmed” appears and you can disconnect the device. IMPORTANT: DO NOT CLICK ON “CHIP ERASE”. THIS ACTION WILL ERASE CALIBRATION PARAMETERS STORED IN THE MEMORY. IF THIS HAPPENS, DEVICE WILL BE NEED TO BE SENT TO MANUFACTURER. www.sgs.
TECHNICAL GUIDE v2.6 12. Problem Solutions If you notice that the device is continuously restarting once the first samples have been sent, this is because there is no communication with the LoRa Gateway. This problem can be solved by placing the Gateway closer to the devices. www.sgs.
TECHNICAL GUIDE v2.6 13. Identification Each device has a label on the front of the MTU and another on the back. In the back label will be the following fields: - Model of the MTU Serial Number of the MTU LORA Id SIGFOX Address*. * Note that not all the devices have two radios. SigFox may not be included. - Power Supply Besides, the RTU cable is identified with another label with its serial number. Figure 21.Front Label www.sgs.
TECHNICAL GUIDE v2.6 Figure 22.Back Label 14. Certifications 14.1 LoRaWan EU The product is in conformity with the essential requirements and other relevant requirements of the R&TTE Directive (1999/5/EC) and the 2002/95/CE Directive. The product is in conformity with the following standards and/or other normative documents: - Electro-Magnetic Compatibility: - UNE-EN 61326-1. - Spectrum: - - EN 300 220-1. - EN 300 220-2. Electrical Security: - UNE-EN 61010-1.
TECHNICAL GUIDE v2.6 15. Waste and Recycling This unit will never be thrown to the trash! Ask local authorities for information about how to remove device not to contaminate the environment. Not respecting current regulations is subject to sanctions and measures established by law. This product has the symbol for selective classification for Waste Electrical and Electronic Equipment (WEEE).
