Must read for device docking:

e. UWB devices: Oviphone UWB terminal products come in various forms such as watches, chest cards, and safety helmet modules (supporting 4G/LoRa+UWB+GPS Beidou+BLE indoor and outdoor integrated positioning). Support deployment free UWB beacons, UWBTDoA, and UWBAoA single base stations. Support open UWB module and UWB chip SDK, and interface with third-party UWB base stations and UWB beacons. For details of UWB products and solutions, please click to view: UWB Products and Solutions _ Oviphone (oviphone. cn)

f. 4G device short connection mode: Establish a connection when data transmission is needed, disconnect after completing the data transmission, and the short connection mode has low terminal power consumption. Suitable scenarios where the terminal actively reports data and the transmission interval is more than 5 minutes. Corresponding to LoRa ClassA mode and NBIoTIdle mode

Long connection mode of 4G devices: The terminal and network always remain in established connection mode, and the power consumption of the terminal is relatively high in long connection mode. Suitable terminals need to receive network messages at any time, or in scenarios with dense data transmission. Corresponding LoRa ClassC mode. (In order to extend the standby time of devices, multiple 4GCat. 1 devices can issue commands to switch from long connection mode to short connection mode, including G908G, G805G, G808G, G618G, etc.)

g、 If you have special requirements and suggestions for protocols, data formats, product features, etc., please contact Oviphone

h、 Communication protocols for different types of devices can be accessed through the tabs above or by entering the website below

4G device docking document and instructions: https://www.oviphone.cn/4GApplication-EN/

Platform API push documentation and instructions: https://www.oviphone.cn/APIApplication-EN/

Lora device docking document and instructions: https://www.oviphone.cn/LoraApplications-EN/

UWB device docking document and instructions: https://www.oviphone.cn/UWBApplication-EN/

Bluetooth device docking document and instructions: https://www.oviphone.cn/BLE-EN/

NBIOT device docking document and instructions: https://www.oviphone.cn/NBApplication-EN/

Explanation of Positioning Principle:

1. WiFi location:

Wifi positioning is the most commonly used positioning technology for wearable devices. If it is not in a completely open environment, please make sure to enable the Wifi positioning option (GPS/BDS satellite positioning must be in an open environment, and the device's antenna must be able to "see" at least 1/4 of the sky). Conventional application: It is recommended to use the "Wifi (base station) ->satellite" positioning mode (including base station positioning mode) on the Oviphone platform and mobile client.

As long as there is a WiFi signal in the surrounding area, WiFi positioning can be used. The device scans the surrounding WiFi hotspots (no connection is required), and then transmits them to the background through the built-in IoT network card of the device. The background queries the database (Gaode or Baidu, which are currently charged) and returns the location description and latitude and longitude to achieve positioning.

The following information is excerpted from Baidu search

The principle of WiFi positioning is to collect information about surrounding Wi Fi hotspots, combine signal strength and location server databases, and calculate the geographical location of the device. The specific steps are as follows:

Collecting Wi Fi information: When the device enables Wi Fi functionality, it scans and collects information about surrounding Wi Fi hotspots, including their MAC addresses and signal strength. These pieces of information will be uploaded to the location server.

Database matching: The location server will search for the geographic locations of these Wi Fi hotspots based on the uploaded information. These location information typically come from users' usage data and location service providers' databases.

Calculate location: The server combines the geographic location and signal strength of each hotspot to use three-point or multi-point positioning technology to calculate the approximate location of the device. Three point positioning is to determine the location of a device through three or more hotspots, while multi-point positioning is to improve the accuracy of positioning through more hotspots.

Return location information: After the calculation is completed, the server will return the calculated location information to the device, usually in the form of latitude and longitude

2. GPS/BDS positioning: collectively referred to as satellite positioning, we currently use domestically produced GPS+BDS dual star positioning chips.

3. BDS RTK positioning

a. RTK requires a particularly large antenna area (and a particularly spacious environment), and wearable devices typically use ultra small wires such as FPC or LDS, which are not suitable for RTK antenna requirements.

b. The power consumption of RTK is huge, and a 2000mAh battery cannot support 8 hours (new devices with 3000mAh batteries on the market can only charge and discharge for 8 hours every day, and after six months, the battery capacity will decrease to only 5-6 hours, which is also difficult to achieve industrial use).

c. The operating cost of RTK is extremely expensive, with RTK base station servers costing over 4-500 yuan (per card per year). In addition, 4G data also requires a particularly large amount and high fees (around 100 yuan per card per year).

d、 Wearable devices: If high-precision satellite positioning is required, we recommend dual frequency satellite positioning. For example, the G808's dual frequency BDS L1+L5 balances power consumption and positioning accuracy of 1-5 meters. If high-precision positioning is required, other stable and environmentally friendly technologies such as Bluetooth beacons and UWB can be used.

4. Single BDS positioning

In response to the current demand for domestically produced single BDS in industries such as Sinopec and PetroChina

a、 Our badge, watch, and helmet modules all use domestically produced BDS+GPS dual-mode chips. There is a compatible single Beidou chip available.

b、 However, the number of BDS satellites currently does not cover much, especially the small antenna area of the watch, resulting in poor single Beidou output effect. GPS and BDS are just receivers and there is no data risk issue

c、 If single certification is required, it depends on the specific certification agency

i、 Some institutions: accept GPS+BDS chip terminal firmware output single Beidou

ii、 Some institutions: accept certification reports of BDS from chip manufacturers

ii、 Some institutions require certification of the entire machine with a single BDS chip

5. Accurate positioning: For specific information, please refer to the smart wearables, indoor and outdoor integrated positioning products and solutions in Shanghai Oviphone Part 4; Content related to solutions

a、 The lowest cost precise positioning solution: using Bluetooth beacons, it can locate doorways, floors, bathrooms, and rooms. One beacon can be used for existence positioning; Three beacons can achieve a positioning accuracy of 3-5 meters. (For indoor and outdoor positioning logic with Bluetooth beacons, it is recommended to use the positioning mode of "Bluetooth ->Wifi (base station) ->satellite". Deploying Bluetooth beacons or UWB beacons can refer to the Oviphone platform.)

b、 To achieve meter level positioning accuracy: please use Bluetooth AoA high-precision positioning or UWB positioning

Note: The principles of indoor Bluetooth positioning and UWB positioning can be found in the "Solution" section of this website (or searched on Baidu). For specific cases, please click to refer to the Oviphone platform introduction: Cloud, Mobile APK introduction