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

आईपी ​​मेष तदर्थ ट्रान्सीभर OFDM ट्रान्समिटर रिसीभर ड्रोन आईपी क्यामेराको लागि वायरलेस भिडियो डाटा ट्रान्समिसन

Installed on the Drone

Product Overview

This system adopts a new type of sub-broadband “wireless networking” based on point-to-point, बिन्दु-देखि-बहुबिन्दु, and AD-Hoc networking. As a mobile center organization network, Vcan1401 is a central, distributed, multi-hop relay, 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, लामो प्रसारण 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, robots, 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 कन्ट्रोल, 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 “सेकेन्ड”;
• Arbitrary topology, multi-hop relay, relay forwarding;
• The logical attributes of each node can be flexibly configured;
• हाल, the same frequency network can support the interconnection of 1024 नोडहरू;
• 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, private network, 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, चेन, star, आदि, 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, simple operation, 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;

प्राविधिक परिमिति

• Communication frequency: 1415~1465MHz (3G\2.4G), समायोज्य;
• प्रसारण शक्ति: 2*30dBm (2*1डब्ल्यू), 1dBm step adjustable;
• Bandwidth mode: 4 / 8 मेगाहर्ट्ज;
• मडुलन विधि: multi-carrier TDD-COFDM;
• Carrier modulation: BPSK/QPSK/16QAM/64QAM (adaptive or fixed);
• संवेदनशीलता प्राप्त: -110dBm @ 1MHz;
• प्रसारण ढिलाइ: about 2ms for a single hop;
• Startup time: बिन्दु देखि बिन्दु, point-to-multipoint≤5S (AD-Hoc start-up time 25S);
• Network access time: less than 1 दोस्रो;
• Routing switching: less than 1 दोस्रो;
• डाटा इन्टरफेस: network port x 2, RS232 x 2;
• Battery power supply: 12वी / 1;
• Power consumption of the whole machine: 6~12W, standby 6W, receiving 8W, full load sending 12W;
• काम तापमान: -40~ + 70 ℃;
• आकार: लम्बाइ: 73mm*width 47mm*height 10mm;
• वजन: 60G

Data Chart

मडुलन	1MHz Bandwidth (एमबीपीएस)	2मेगाहर्ट्ज ब्यान्डविथ (एमबीपीएस)	4मेगाहर्ट्ज ब्यान्डविथ (एमबीपीएस)	8मेगाहर्ट्ज ब्यान्डविथ (एमबीपीएस)
BPSK 1/2	0.38	0.7	1.25	2.15
QPSK 1/2	0.9	1.6	2.6	4.5
QPSK 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

सोधिने प्रश्न अधिक

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

एक: 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)

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

एक: 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, उदाहरणका लागि, 192.168.17.xxx.

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

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

एक: हो, 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.ब्यान्डविथ 10 （frequency bandwidth）
wlan.radios.0.च्यानल 2 （channel）
END-AT-API

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

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

एक: We have many models that support the frequency hopping function (यो मोडेल दुई-तरिका वायरलेस डाटा लिङ्क संग भिडियो र डाटा वायरलेस प्रसारण लागि डिजाइन गरिएको थियो). 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

Q: Can I modify the less transmission power?

एक: निश्चित. 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

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

Now it supports English and Chinese.

Q: How many nodes the mesh architecture can support?

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

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

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

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

एक: हो.

Q: Does the frequency band support 2280 Mhz to 2380 MHz?

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

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

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

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

एक: 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 तलको चित्र जाँच गर्नुहोस्.

डाउनलोड

Vcan1401 mesh version serial port AT setting routine description.pdf