Multi-person network BLE intercom (1000 Meters Intercom),
Model: HF-BT-S 3
a. BLE Intercom 1000 meters
b. Helmet Bluetooth FM Intercom c. Wireless Intercom to Multi riders d. Waterproof Intercom
e. Bluetooth Phone
f. FM Radio
g. Connecting to GPS/MP3
h. Functions 5 in 1
1. BLE Intercom Product Application
Helmets Application with THE HF-BT-S 3
- Ordinary riding, mountain bike riding;
- Sports, skiing, ice hockey, horse racing, horse riding/equestrian, knights, racing, skateboarding, mountaineering and climbing, roller skating, ice hockey, speed skating, skating, skating, hockey, rugby, extreme sports;
- Roller skating, street dancing, etc;
- Special application as military, construction, mining, sandblasting, thermal radiation, UV protection, fire protection, bulletproof, riot prevention, police use, ordinary flying buildings, mines, etc.
2. The Priority of Functions 5 in 1 BLE Intercom
a. The phone call priority is level 1, the phone paired with Bluetooth can be answered manually / or automatically, called back or rejected.
b. Intercom priority level 2; (direct full-duplex intercom between 1000 m at most, two or more people intercom, and intercom for Bluetooth can be enabled within 10 meters visible range of the mobile phone.
c. Music playing priority level 3; playing the high-quality stereo music brought by Bluetooth technology with the highest quality (no other competitor); enjoying the matching music of mobile phone through A2DP; controlling the previous and next music of mobile phone through AVR CP, playing and pausing.
d. FM priority level 4.
e. External audio cable connection priority level 5.
3. BLE Intercom Special Advantages
a. Top Bluetooth technology music quality– No.1 music quality. （CSR Tech)
b. Intercom with Bluetooth Tech.
c. DSP noise elimination and wind sound processing to ensure clear voice quality when driving at high speed.
d. The waterproof and sunscreen design of the key panel is durable.
e. Support last call redial back.
f. To be connected with MP3, GPS, mobile phone, walkie-talkie, and all audio players through the audio cable.
4. BLE Intercom Product Descriptions
The Intercom is a Bluetooth Headset designed for the riders and users who wish to have clear and reliable wireless communications while riding. This headset is compatible with Bluetooth cellular phones and can be suited to any sort of helmet for motorcyclists.
5. BLE Intercom Main Features
(1) Wireless headset for Bluetooth enables cell phone at a range of up to 10 meters.
. Bike-to-bike intercom for rider& user or two separate riders up to 800-1000 meters.
. Up to 10 hours talk time when connected to the cell phone.
. Up to 6 hours talk time when using the intercom feature.
. Up to 300 hours standby
(2) Call out, call answer, call reject, call hang up.
(3) Receive a cell phone call automatically
(4) Support audio transfer.
(5) Support the last number redialing.
(6) FM Radio function
(7) Enjoy the cell phone music through A2DP or connect GPS
(8) Control cell phone music through AVR CP: forward, backward, play, pause
(9) Automatic switching among Bluetooth cell phone, intercom, stereo music.
(10) With DSP echo cancellation and noise suppression technology, crystal clear voice quality is guaranteed at a high speed.
(11)Button panel is water-proof and sun-proof, while the design is durable.
(12)Audio cable to connect MP3, GPS, walkie-talkie and so o
6. How to Mount BLE Intercom to Your Helmet?
7. Some Key Points That Our Opponents Can’t Do
The voice collected by the mic and the voice signal from the far end is mixed, filtered and strobe processed in DSP, then played by local SPK, and also needs to be transmitted to other devices through RF channel. DSP processing is also the core difficulty of the whole project. The difficulty of full-duplex intercom lies in not only letting others hear their voice, but also not being able to hear their voice locally, making the voice heard by others clear and low delay, and also considering reducing environmental noise and other issues. These problems are related to the knowledge of digital signal processing, Kalimba DSP programming, and so on.
b. Bluetooth Pairing
Bluetooth pairing. The process of discovery, pairing, and connection between Bluetooth earphones are not very different from that between mobile phones and ordinary Bluetooth earphones. Because our scheme supports the function of shareme, the API for scanning and connecting other sink devices can be found in the sink routine (refer to sink “inquiry. C). When the master device enters the inquiry mode, the slave device enters the condisc mode, and the master device finds the slave device and initiates the connection request to complete the pairing. Note that the main device may be connected to other non-Bluetooth intercom headset devices, so you need to filter the searched devices during the inquiry process. The filter condition can be a device name or a profile type supported by the device. The latter method is adopted in this project.
c. Networking Tech
The scheme supports the connection of up to two devices at the same time, so the headphones can be connected in series by cascading. A reference application framework, namely TWC function (three-way conference), has been given in CSR ADK, but there is no special DSP processing. We can do it.
You can customize according to your ideas, as Hidesign can provide a turnkey solution for this project. Please contact us now for more detail.