HELTEC HRI-3622 Sensor Hub Bus Transformer User Manual
- August 20, 2024
- HELTEC
Table of Contents
HELTEC HRI-3622 Sensor Hub Bus Transformer
Product Information
Specifications
- Model: HRI-3622 Sensor Hub Bus Transformer
- Interface: Flange seat, RS-485 interfaces, 4 GPIO interfaces
- Battery: Built-in 1100mAh rechargeable battery
- Protection Level: IP66
- Materials: Stainless steel shell, high-strength plastic
Product Usage Instructions
Overview
The HRU-3622 is a sub-model of the Sensor Hub for outdoor series designed
to drive third-party sensors. It features a flange seat interface with RS-485
and GPIO interfaces for connecting sensors directly.
Features
The Sensor Hub for Industry offers excellent low power consumption and long
transmission distance characteristics. Its IP66 protection level, built-in
rechargeable battery, and durable construction make it suitable for use in
complex industrial environments.
Hardware Characteristics
Physical Dimensions
The physical dimensions of the HRI-3622 are designed for easy installation
and integration into various industrial setups.
Interface Definition
The interface definitions for RS-485 and GPIO interfaces are provided for
seamless connection with compatible sensors.
FAQ
-
Can the Sensor Hub for Industry be used in outdoor environments?
Yes, the Sensor Hub is designed for outdoor use and features an IP66 protection level. -
How long does the rechargeable battery last?
The built-in 1100mAh rechargeable battery provides long-lasting power depending on usage.
Copyright Notice
All contents in the files are protected by copyright law, and all copyrights are reserved by Chengdu Heltec Automation Technology Co., Ltd. (hereinafter referred to as Heltec). Without written permission, all commercial use of the files from Heltec are forbidden, such as copy, distribute, reproduce the files, etc., but non-commercial purpose, downloaded or printed by individual are welcome.
Disclaimer
Chengdu Heltec Automation Technology Co., Ltd. reserves the right to change,
modify or improve the document and product described herein. Its contents are
subject to change without notice. These instructions are intended for you use.
Description
Overview
HRU-3622 is a sub-model of the Sensor Hub for outdoor series that specifically
drives third-party sensors. Its interface is a flange seat, with RS-485
interfaces and 4 GPIO interfaces, can be used to connect RS-485 sensors
directly.
Sensor Hub for Industry has excellent low power consumption and long
transmission distance characteristics, comes with a built-in 1100mAh
rechargeable battery. The stainless-steel shell and high-strength plastic
provide an IP66 protection level, allowing it to perform stably and
excellently in complex industrial environments.
HRI-3622 are available in 3 product variants:
| No. | Model | Description |
|---|
1
|
HRI-3622-470
|
470~510MHz working LoRa frequency, used for China mainland (CN470) LPW band
2
|
HRI-3622-868
|
863~870MHz working LoRa frequency, used for EU868, IN865 LPW bands.
3
|
HRI-3622-915
|
902~923MHz working frequency, used for AS923, US915, AU915, KR920 LPW bands.
Product features
- Industrial grade protection structure, IP66 protection grade.
- Ultra-low power consumption design, built-in 1000mAh 18350 rechargeable battery.
- Compatible with wall fixing or cylinder fixing.
- Wireless data transmission communication radius up to 3km (no occlusion).
- Working temperature1: –20~60°C, Working humidity: ≤90% (non-condensing).
- Power supply mode: built-in battery or external 5V DC powersupply.
- Can register by scanning the QR code through the APP, or easily register through the device WiFi.
Specifications
General specification
| Parameters | Description |
|---|---|
| Recommended operating condition | -20~ 60℃, 10 ~ 90(no condensing) RH% |
| Interface | Flange Seat(see 3.2) |
| Input format | RS-485; 4~20mA2 |
| Microcontroller | Heltec Wireless Shell |
| Sensor module | Custom |
| LoRaWAN Channel Plan | EU868/US915/AU915/ AS923/KR920/RU864/CN470 |
| Max. Receiving Sensitivity | -136dBm@SF12 BW=125KHz |
| Max. TX Power | +20 ± 2 dBm |
Communication Distance
| 2 to 6km (depending on gateway antenna and
environments)
IP Rating| IP66
Operating Temperature| -20 ~ 60 ℃
Operating Humidity| 10% ~ 100%, no-condensing
Battery Capacity| 1100mAh
Battery Type| 18350
Operating conditions
Power supply range
| Parameter | Min. | Typical | Max. | Unit |
|---|---|---|---|---|
| Operating voltage | 2.7 | 3.7 | 5 | V |
| Charging voltage | 5 | V |
Power consumption @3.7V
| Mode | Condition | Min. ① | Max. ② |
|---|---|---|---|
| Active-Mode (TX) | TX power is 22dBm @3.7 supply. | 200mA | 235mA |
| Active-Mode (RX) | TX disabled; RX enabled. | 35mA | 42mA |
| Sleep | 25μA | 40μA |
RF characteristics
The following table gives typically sensitivity level of the Sensor Hub.
| Signal Bandwidth/[KHz] | Spreading Factor | Sensitivity/[dBm] |
|---|---|---|
| 125 | SF12 | -134 |
| 125 | SF11 | -132 |
| 125 | SF10 | -130 |
| 125 | SF9 | -127 |
| 125 | SF8 | -124 |
| 125 | SF7 | -122 |
LoRaWAN Frequency
Note: No Frequency limitation. EU868 can be switched to RU864, US915 can be
switched to AU915/AS923/KR920.
| NO | Frequency band | Common band |
|---|---|---|
| 1 | EU863-870 | EU868 |
| 2 | US902-928 | US915 |
| 3 | AU915-928 | AU915 |
| 4 | AS923_1 | As923 |
| 5 | AS923_2 | As923 |
| 6 | KR920-923 | KR920 |
| 7 | RU864-867 | RU864 |
| 8 | CN470-510 | CN470 |
RGB indicator light description
| RGB Color | Condition | Description |
|---|
White
|
Steady on
| Long press the button, the white light means to enter
the working mode, release and then go out
Yellow
|
Steady on
| Long press the button, the yellow light means to enter
the configuration mode
Blue
|
Blink
| The button flashes, wakes up the device, and sends a
message once
Green| Blink| Flash once after successful transmission
Purple| Blink| Flash once after successful reception
Red
|
Blink
| Charge in working mode, press the button once flashing red light; The charging red light is always on in configuration mode
Hardware characteristics
Physical Dimensions
Interface definition
Resource
Relevant resource
Heltec Contact Information
- Heltec Automation Technology Co., Ltd Chengdu, Sichuan, China
- Email: support@heltec.cn
- Phone: +86-028-62374838
- https://heltec.org
FCC Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
To assure continued compliance, any changes or modifications not expressly
approved by the party.
Responsible for compliance could void the user’s authority to operate this
equipment. (Example- use only shielded interface cables when connecting to
computer or peripheral devices).
This equipment complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions:
- This device may not cause harmful interference, and
- This device must accept any interference received, including interference that may cause undesired operation.
FCC Radiation Exposure Statement:
The equipment complies with FCC Radiation exposure limits set forth for
uncontrolled enviroment. This equipment should be installed and operated with
minimum distance 20cm between the radiator and your body.
References
- The Things Stack for LoRaWAN Console
- HRI-3622 Sensor Hub Bus Transformer — hri_485x latest documentation
- Heltec Automation – 成都惠利特自动化科技有限公司
- Heltec Automation – 成都惠利特自动化科技有限公司
- Junction Box – Heltec Automation
- listing directory /download/Sensor Hub for industry