1. Introduction
The Dusun In-vehicle IoT Gateway supports two wireless protocols, Bluetooth and Wi-Fi. It connects to the TCAM via Wi-Fi and to IoT devices via BLE (Bluetooth Low Energy) to establish communication links. It collects the information uploaded by IoT devices, transmits it to the TCAM, and further sends it to the cloud. At the same time, it receives downward instructions and processes them.
As shown in Figure 1, the vehicle-mounted IoT gateway and the TCAM are connected via WiFi. The TCAM is in AP (Access Point) mode, and the vehicle-mounted IoT gateway is in STA (Station) mode.
The network configuration method is as follows:
(1) The vehicle-mounted IoT gateway enters the network configuration mode through the network configuration button. At this time, the gateway’s WiFi is set to AP mode (2.4GHz).
(2) The DHU (presumably some device) connects to the hotspot of the vehicle-mounted IoT gateway and sends the SSID and password of the TCAM’s WiFi to the gateway through an interface.
(3) The vehicle-mounted IoT gateway switches to STA mode and connects to the TCAM.
This scenario is for situations such as camping, where the user takes the gateway out of the vehicle. In this case, the gateway needs to connect to the mobile hotspot to access the Internet.
(1) The vehicle-mounted IoT gateway enters the network configuration mode by pressing the network configuration button. At this time, the gateway’s Bluetooth is turned on.
(2) The mobile phone connects to the vehicle-mounted IoT gateway via Bluetooth and sends the SSID and password of the mobile phone’s WiFi to the gateway through an interface.
(3) The vehicle-mounted IoT gateway switches to STA mode and connects to the mobile phone.
● Operating System: OpenWrt
● Processor: RV1106 (1.2GHz)
● RAM: 128MB
● Flash Memory: 32MB
● It supports IEEE802.11n/g/b/a/ac protocols, features dual-band Wi-Fi with a maximum negotiated rate of 433Mbps.
● It is equipped with 1 BLE (Bluetooth 5) module and reserves one position for BLE expansion.
● It supports 5 – 12V power supply (USB TYPE C).
● It supports MQTT.
2. Parameter Specifications
| Category | Parameter |
|---|---|
| CPU | RV1106 |
| System | OpenWrt |
| RAM | 128MB |
| Flash | 32 MB |
| Power Supply | Powered by USB Type C, supporting a voltage input of 5 - 12V DC. ● When the input voltage is 5V DC, the current requirement is 0.8A. ● When the input voltage is 9V DC, the current requirement is 0.45A. ● When the input voltage is 12V DC, the current requirement is 0.35A. |
| Power Consumption | ≤5W |
| Physical Buttons | ● Controlled by GPIO, which can be used for network configuration and device reset. |
| Wi-Fi | ● 2.4GHz或5GHz，1T1R，Support 802.11b/g/n/a/ac ● The maximum negotiation rate is 433Mbps, and the actual rate is ≥50Mbps. |
| Bluetooth | It features a dual - BLE5 design, with one of the BLE5 modules being reserved without components installed. |
| Wi-Fi and Bluetooth Communication | It can communicate and connect to the DHU, TCAM, or mobile phone via 5G/2.4G Wi-Fi; It communicates with sub-devices via BLE (Bluetooth 5.0). |
| BLE | The communication distance can reach over 25 meters when the gateway is placed in the vehicle's storage box. In an open environment, the communication distance can exceed 60 meters (with a 100% communication success rate). |
| Connection Quantity | BLE（8） |
| Operating Temperature | -10℃~70℃ |
| Storage Temperature | -25℃~85℃，After long-term storage in the in-vehicle parking environment, it will not affect the normal use of the device. |
