IP mesh ad hoc transceiver OFDM Transmitter and receiver Wireless Video Data Transmission for UAV Drone IP camera

ड्रोन आईपी कैमरे के लिए आईपी जाल तदर्थ ट्रांसीवर ओएफडीएम ट्रांसमीटर रिसीवर वायरलेस वीडियो डेटा ट्रांसमिशन

Installed on the Drone

उत्पाद अवलोकन

This system adopts a new type of sub-broadband “wireless networking” based on point-to-point, point-to-multipoint, and AD-Hoc networking. As a mobile center organization network, Vcan1401 is a central, वितरित, मल्टी-हॉप रिले, dynamic routing, strong invulnerability, and good scalability wireless broadband system. It uses its own routing protocol internally. Jump forwarding completes wireless communication between nodes. An ad hoc distributed broadband wireless network transmission system with an efficient MAC layer transmission protocol and a two-layer routing protocol. It has excellent sub-broadband performance, strong anti-interference ability of system technology, high spectrum efficiency, लंबी संचरण दूरी, anti-fading ability, and strong diffraction ability. It can realize real-time and high-quality wireless two-way data transmission functions in complex and non-line-of-sight environments.

Facing the information communication transmission of drones, रोबोटों, and unmanned boat platforms in complex environments, we follow the design principles of generalization, modularization, and standardization to realize high-speed real-time transmission of telemetry, रिमोट कंट्रोल, and payload data from ground control stations to unmanned terminals on the water surface As well as the information collaborative interaction function between unmanned terminals, the system works continuously, stably and reliably for a long time.

Technical Feature

• After the central station is turned on, there is no need for complicated system configuration. After the on-site power-on, it will automatically form a network, and the communication can be started in “सेकंड”;
• Arbitrary topology, मल्टी-हॉप रिले, relay forwarding;
• The logical attributes of each node can be flexibly configured;
• वर्तमान में, the same frequency network can support the interconnection of 1024 नोड्स;
• The channel is encrypted with AES;
• The system data bandwidth peak value is 32Mbps;

Hardware description

1. 1) Adopt domestic self-organized intellectual property technology, प्राइवेट नेटवर्क, private communication transmission protocol, and unique synchronization code.
2. AES 128-bit encryption technology: After the information data is encrypted by AES, the information before encryption cannot be obtained;
3. OFDM pilot and data position scrambling code encryption: The number of OFDM subcarriers is kept secret, the number of pilots is kept secret, and the position of the pilot is kept secret, making it impossible to obtain pilot information for channel estimation and frequency domain equalization; the change method of pilot and data position is encrypted In this way, illegal users cannot correctly distinguish pilot frequency and data.
4. LDPC code word structure encryption: LDPC code word structure includes code length, information bit, and check bit; the position changes of information bit and check bit are encrypted, and illegal users cannot correctly distinguish between information bit and check bit.
5. Using multiple encryption methods and modular design;
6. Centralized and distributed, all nodes are equal in status, and can self-organize a network under complex conditions such as shielding non-line-of-sight (NLOS) and high-speed movement, and realize TDD two-way communication;
7. Support any network topology such as point-to-point, जंजीर, तारा, वगैरह।, and can realize real-time interaction of multi-channel IP-based sub-broadband data, multi-serial port data, and other multimedia information;
8. Multi-hop relay, each node can move randomly and quickly, and the route can be dynamically reconfigured when the system topology changes rapidly;
9. Convenient deployment, flexible use, सरल ऑपरेशन, convenient maintenance, and all-IP design (supporting various data transparent transmission) make it easy to realize the interconnection of heterogeneous systems, especially suitable for wireless coverage transmission and wireless narrowband data networking;

तकनीकी मापदंड

• Communication frequency: 1415~1465MHz (3G\2.4G), एडजस्टेबल;
• संचरण शक्ति: 2*30डी बी एम (2*1डब्ल्यू), 1dBm step adjustable;
• Bandwidth mode: 4 / 8 मेगाहर्ट्ज;
• मॉड्यूलेशन विधि: multi-carrier TDD-COFDM;
• Carrier modulation: बीपीएसके/क्यूपीएसके/16क्यूएएम/64क्यूएएम (adaptive or fixed);
• संवेदनशीलता प्राप्त करें: -110dBm @ 1MHz;
• ट्रांसमिशन में देरी: about 2ms for a single hop;
• Startup time: बिंदु से बिंदु तक, point-to-multipoint≤5S (AD-Hoc start-up time 25S);
• Network access time: less than 1 दूसरा;
• Routing switching: less than 1 दूसरा;
• डेटा इंटरफ़ेस: network port x 2, RS232 x 2;
• Battery power supply: 12V/1A;
• Power consumption of the whole machine: 6~12W, standby 6W, receiving 8W, full load sending 12W;
• कार्य तापमान: -40~+70℃;
• आकार: लंबाई: 73mm*width 47mm*height 10mm;
• वजन: 60जी

Data Chart

मॉड्यूलेशन	1MHz Bandwidth (एमबीपीएस)	2मेगाहर्ट्ज बैंडविड्थ (एमबीपीएस)	4मेगाहर्ट्ज बैंडविड्थ (एमबीपीएस)	8मेगाहर्ट्ज बैंडविड्थ (एमबीपीएस)
बीपीएसके 1/2	0.38	0.7	1.25	2.15
क्यूपीएसके 1/2	0.9	1.6	2.6	4.5
क्यूपीएसके 3/4	1.6	2.7	4	7.1
16QAM 1/2	1.8	3.1	5.3	9.5
16QAM 3/4	2.2	3.9	8	14.2
64QAM 2/3	2.8	5.2	10.6	19.5
64QAM 3/4	3.8	6.4	12	21.5
64QAM 5/6	4.2	7.8	13.5	24

सामान्य प्रश्न अधिक

क्यू: Why does the radio transceiver seem to power on in seconds and power off always restart?

ए: Please check the power supply, for the 2×5-watt PA inside, the power supply should be 16-26V at 4.5A. Maybe the power supply is not enough, then always restart. (2×1-watt or 2×2-watt need 12-18V)

क्यू: Why can’t I connect the transceiver radio device via web cable or get a ping feedback?

ए: The default IP address of the two-way radio transceiver is 192.168.17.1.

Please make sure that the IPV4 address of your computer is the same net segment, उदाहरण के लिए, 192.168.17.xxx.

Please set the default gateway of the IPV4 address is 192.168.17.1.

क्यू: Does your mesh two-way transceiver module support changing the frequency (चैनल) via the UART AT command?

ए: हाँ, please type the below commands at the serial port tool.

AT-API+ set
wlan.radios.0.name phy0
wlan.radios.0.txpower 30 （power amplifier, 30 means 2-watts）
wlan.radios.0.बैंडविड्थ 10 （frequency bandwidth）
wlan.radios.0.चैनल 2 （channel）
END-AT-API

(The numbers 30, 10, और 2 of the above command should change to what you want the number. )

क्यू: Does the radio support frequency hopping/ changing dynamically?

ए: We have many models that support the frequency hopping function (यह मॉडल दो-तरफा वायरलेस डेटा लिंक के साथ वीडियो और डेटा वायरलेस ट्रांसमिशन के लिए डिज़ाइन किया गया था). The cost is different.
The model you bought does not support frequency hopping. You can choose the frequency from the below picture. (Choose from the web page or AT commands)

Mesh Radio Transceiver Support Channel Frequency range

क्यू: Can I modify the less transmission power?

ए: ज़रूर. When you are testing the sample on the function except for the real transmission range, it is better to change the less transmission power in the lab.

20mW is 13dBm
200mW is 23dBm
1 Watts is 30dBm
2 Watts is 33dBm
5 Watts is 37dBm
10 Watts is 40dBm
20 Watts is 43dBm
50 Watts is 47dBm
100 Watts is 50dBm

क्यू: Can the web interface contain only the English language?

Now it supports English and Chinese.

क्यू: How many nodes the mesh architecture can support?

ए: Supports up to 32-node networking. Too many nodes will cause high system overhead and the network will be very unstable. आम तौर पर, a dozen nodes are recommended.

क्यू: Is the relay function available in this modem? if yes then how many hops possible?

ए: Support relay function. अधिकतम 5 hops in the one line.

क्यू: Can we decrease the data rate to increase the range?

ए: हाँ.

क्यू: Does the frequency band support 2280 मेगाहर्ट्ज से 2380 मेगाहर्टज?

ए: The frequency band can not meet your demand now. Only 2310-2380Mhz is available.

क्यू: What about the encryption? Do you provide by default encryption details?

क्यू: Please show us the drawing for hole positions and size of the 2×1-watt PA model.

क्यू: At this mesh IP radio, the new unit will be auto-joining my networking, how can we set authorization and protect our privacy?

ए: If you have three or four robots, those who walk in the middle will serve as relays or repeaters for those who walk in the front. If you have three or four units, they can be auto-forming networking, so setting passwords is very important.
कृपया नीचे दी गई तस्वीर की जाँच करें.

क्यू: How can I update the firmware of your two-way IP radio?

Here is an example firmware of 20240415. Please contact us for the latest update firmware if you need it.

https://drive.google.com/file/d/1OcGiQ3gdaxTvjX3bpS2yJWzn4nNecq-S/view?usp=drive_link

क्यू: Why my IP transceivers have stopped talking to each other?

 

Why did our IP transceivers stop talking to each other? The UI says Mesh Network is broken. We cannot ping any Radio, we can not see any transmissions using the Spectrum Analyzer when we ping.

ए: The parameter configuration should be messed up. What’s the situation with the wireless part? Is it convenient to take a screenshot? The easiest way is to restore the factory settings (after restoration, the IP address is: 102.168.17.1)

डाउनलोड करना

Vcan1401 mesh version serial port AT setting routine description.pdf