Ecoh 915 LoRa WAN 902-928 MHz (US915) MANUAL June 10, 2021 Ecoh 915 Manual 1.0.3 Pag.
Summary 1 1. INTRODUCTION....................................................................................................3 2. LORAWAN NETWORK ARCHITECTURE ............................................................4 3. SMART PARKING SENSOR ................................................................................5 4. INTERCOMP ECOH SMART PARKING SENSOR ..............................................6 4.1. 4.2. 4.3. 4.4. 4.5. 4.6. 4.7. 4.8. 4.9. 4.10. 4.11. Hardware description ..................
1. INTRODUCTION The Intercomp - Smart Parking Sensor Ecoh 915 developed by Intercomp, allows citizens to detect available parking slots in the on-street parking It’s part of the complete Smart Parking Systems Solutions for the management of the on street paid parking in the city. Figure : Ecoh sensor in a street parking The sensor applies intelligent algorithms to detect changes in the state of the parking slot. Then data is transmitted with the LoRaWAN radio to the destination server/platform.
The Ecoh 915 sensor provisioning has been enormously improved. The sensors are delivered with default time settings and also unique LoRaWAN identifiers and keys. So it is easy to use the default settings to register all sensors in the LoRaWAN network server at a time. The Ecoh 915 sensor improves the detection and stability performance thanks to unique algorithms developed by Intercomp. 2.
3. SMART PARKING SENSOR A Smart Parking Sensor is the device installed in each parking slot able to recognize the presence of a vehicle. When the device detects a change of the parking slot status (free/busy), it sends a frame to the LoRaWAN base station. The Smart Parking Sensors can be used to give the availability parking information to users only (on VMS panels or directly in the Smart Parking user App), or to manage the availability and the payments of parking.
4. INTERCOMP ECOH SMART PARKING SENSOR 4.1. Hardware description The Smart Parking Sensor is based on 2 different pieces: the base and the external enclosure. The base of the Smart Parking Sensor includes the PCB, the battery, the antenna and the internal enclosure piece. Figure: Base of a Smart Parking Sensor The base is screwed to the external enclosure piece: Figure : External enclosure The next table shows the basic Smart Parking Sensor characteristics.
4.2. Block diagram 4.3. Sensor versions Intercomp provides the next versions of Smart Parking: Reference Version Operating frequency LORAWAN Ecoh 868 Smart Parking for European market 865,000 – 868,000 MHz 868,000 – 868,600 MHz 869,400 – 869,650 MHz 2400 – 2483,5 MHz (BLE) (LoRaWAN EU863-870) Ecoh 915 Smart Parking for North America market 902.0 to 928.0 MHz 2400 – 2483,5 MHz (BLE) (LoRaWAN US902-928) 4.4.
4.5. LoRaWAN protocol and parameters LoRaWAN is a Low Power Wide Area Network (LPWAN) protocol. It is a spread-spectrum modulation technique at extremely low data-rates which permits sending data achieving long ranges. The most important LoRaWAN parameters are: ● LoRaWAN EUI: Read-only, 8-byte, unique identifier which defines each LoRaWAN module in the market. ● Device EUI: Read/write, 8-byte identifier configured into the LoRaWAN module to be used as operating identifier.
4.6. Magnetic Reset switch The magnetic reset switch can be used to wake-up sensor from deep-sleep mode before its installation. Magnetic Reset switch is a component, located in the external side of the PCB. To activate the switch is necessary to close to it a magnet for 3 times with a frequency of 1 second (more or less), even outside the case, in the position shown in the figure.
4.7. Sensor setup 4.7.1. "Ready to install" state All Ecoh 915 sensors delivered are configured with the parameters and keys communicated by customer. Usually the ID assigned to each sensor are the same of the parking bay where it will be installed. If any configuration was requested, sensors will be delivered with a standard parameters and user must complete the configuration before to install them.
When connection will be executed, the SensorConfigurator App will read and show all the parameters set in the sensor. The available commands for sensors are shown in the follow table Calibration To set Sensor at its magnetic zero.
4.8. Sensor sealing The sealing is an extreme important procedure. From this it depends the sensor’s functionality. The product to use to seal the sensor must be DOWSIL™ 7091 Adhesive Sealant (hiips://www.dow.com/en -us/pdp.dowsil-7091-adhesive-sealant.02436621h.
4.9. How the sensor works 4.9.1. Frame types The Smart Parking architecture manages different uplink and downlink frames. The next table shows the Uplink frames: Frame type #num Description Keep Alive 1 Keep alive packet, sent every xxxx seconds without any status change.
4.9.3. Sensor program flowchart Figure : Smart Parking Sensor program flowchart June 10, 2021 Ecoh 915 Manual 1.0.3 Pag.
4.10. Sensor parameters 4.10.1. Parameters description and ranges The Smart Parking Sensor has different parameters that change the timing and detection performance of the sensor. The next table shows the sensor parameters: Parameter Range Description Sampling period 5 sec.* to 30 min. (*minimum suggested) Seconds elapsed between each measurement cycle (not linear scale).
4.10.2. Operational description ECOH US915 is a magnetic sensor for Smart Parking vehicle detection. It’s based on a magneto-resistive chip, able to detect the presence of a metallic mass close to it. This device measures the magnetic earth field, and the variations induced by metal masses placed in its vicinity. The measurement is made on three axis and the sum of these three values gives the total result.
4.10.3. Understanding Info and Keep-aliveframes In the regular working mode, "Sampling" and "Keep-alive" parameters are used. So the sensor normally sleeps for a specific time then wakes-up for sampling (measurement) and applies the algorithm detection in order to detect changes in the parking slot. If a change is detected from ’free’ to ’occupied’ or viceversa, then an "Info" frame is sent. If no change occurred during the last "Keep-alive" time, then a Keep-alive frame is sent.
4.10.4. Factory default values Intercomp provides all Smart Parking Sensors with factory default parameters. Parameter Default value Sampling period 10 sec Keep-alive time 1 hour BLE Adv. for mainten. 6 sec. BLE Adv.
5. SENSOR CONFIGURATION APP Intercomp Sensor Configuration App is a software tool developed by Intercomp that allows users install new firmware versions and to set all the configuration of the new Intercomp devices in a few clicks. Figure : Configuration Manager App is connected to the sensor via USB cable 5.1. How to install the Sensor Configuration App Sensor Configuration app require a standard Windows 10 PC. SensorConfiguration App will be downloadable for Intercomp Customer, for the Intercomp customer.
5.2. Upgrading the Configuration Manager App Occasionally, some improvements and new services will be released. In this case, the new version of Configuration Manager App will be published in the download page. Please check on it for the new versions. 5.3. Sensor Configuration App sections Sensor Configuration is developed for ECOH Sensor series only.
5.5. General Settings (change sensor parameters) Figure : Sensor Configuration App General Settings With this menu is possible to see actual sensor’s configuration and modify all the parameters with new ones. When new parameters are set, clicking on the button Send Configuration, these will be written in the sensor memory. PLEASE READ CAREFULLY THE NEXT PAGE. June 10, 2021 Ecoh 915 Manual 1.0.3 Pag.
!!! ATTENTION !!! If one or more changes made with Sensor Configurator app though USB cable are related to LoRaWAN or NB-IoT network (keys or network parameters), sensor MUST be restarted to enable the new configuration. To do this, please remove the power connector and wait up to 5 minutes for the capacitor discharge or to do it faster, with a little screwdriver, shortcircuit the power pins inside the power connector, to discharge immediately the capacitors bank.
6. PARKING SENSOR APP Parking Sensor App is the Android based app for the on-site management of sensor. It can be used to sends commands to sensors directly on the field, for example to calibrate them and to modify parameters. Parking Sensors App uses a BLE connection protected to communicate with Ecoh Sensor. Parking Sensor App is distributed by Intercomp directly to its distributor or customer and it’s not published on Android Store.
When a connection is established the home page it will be shown. In the home page are present: • The mac address alias (eg. PS-17397) • Sensor id number (eg.
7. CERTIFICATIONS 7.1. Conformity The Smart Parking Ecoh US complies with Title 47 Part 15 subpart B of the FCC rules and regulations for Radio Frequency Devices – Unintentional Radiators (2019). This device contains the following BLE transmitter module: • FCC ID: S9NBNRGM2SA This BLE module with embedded stack and profile has been qualified in accordance with SIG qualification rules: ▪ Declaration ID: D043965 ▪ Qualified design ID: 121363 ▪ Product type: End Product ▪ Core spec version: 5.
