IP mesh ad hoc transceiver OFDM Transmitter and receiver Wireless Video Data Transmission for UAV Drone IP camera
Transceptor ad hoc de malla IP Receptor transmissor OFDM Transmissió de dades de vídeo sense fil per a càmera IP drone
Taula de continguts
Installed on the Drone
Descripció general del producte
This system adopts a new type of sub-broadband “wireless networking” based on point-to-point, punt a multipunt, and AD-Hoc networking. As a mobile center organization network, Vcan1401 is a central, distribuïts, relé multi-salt, encaminament dinàmic, strong invulnerability, and good scalability wireless broadband system. It uses its own routing protocol internally. Jump forwarding completes wireless communication between nodes. Un sistema de transmissió de xarxa sense fil de banda ampla distribuïda ad hoc amb un protocol de transmissió de capa MAC eficient i un protocol d'encaminament de dues capes. It has excellent sub-broadband performance, strong anti-interference ability of system technology, alta eficiència d'espectre, la transmissió de llarga distància, capacitat anti-esvaïment, i una forta capacitat de difracció. Pot realitzar funcions de transmissió de dades bidireccionals sense fil en temps real i d'alta qualitat en entorns complexos i sense línia de visió..
Facing the information communication transmission of drones, robots, and unmanned boat platforms in complex environments, seguim els principis de disseny de generalització, modularització, and standardization to realize high-speed real-time transmission of telemetry, control remot, 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, i es pot iniciar la comunicació “segon”;
- Topologia arbitrària, relé multi-salt, reenviament de relés;
- Els atributs lògics de cada node es poden configurar de manera flexible;
- Al present, the same frequency network can support the interconnection of 1024 nodes;
- El canal està xifrat amb AES;
- The system data bandwidth peak value is 32Mbps;
Hardware description
- 1) Adoptar la tecnologia nacional de propietat intel·lectual autoorganitzada, xarxa privada, protocol de transmissió de comunicacions privades, i codi de sincronització únic.
- Tecnologia de xifratge AES de 128 bits: Després que les dades d'informació siguin xifrades per AES, la informació abans del xifratge no es pot obtenir;
- 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.
- 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.
- Utilitzant múltiples mètodes de xifratge i disseny modular;
- 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) i moviment d'alta velocitat, i realitzar una comunicació bidireccional TDD;
- Support any network topology such as point-to-point, cadena, estrella, etcètera, and can realize real-time interaction of multi-channel IP-based sub-broadband data, multi-serial port data, i altra informació multimèdia;
- Multi-hop relay, cada node es pot moure aleatòriament i ràpidament, and the route can be dynamically reconfigured when the system topology changes rapidly;
- Desplegament convenient, ús flexible, operació senzilla, manteniment convenient, i disseny totalment IP (suportant diverses transferències de dades transparents) make it easy to realize the interconnection of heterogeneous systems, especially suitable for wireless coverage transmission and wireless narrowband data networking;
paràmetres tècnics
- Freqüència de comunicació: 1415~1465 MHz (3G\2.4G), ajustable;
- La potència de transmissió: 2*30dBm (2*1W), 1dBm step adjustable;
- Mode d'ample de banda: 4 / 8 MHz;
- mètode de modulació: TDD-COFDM multiportadora;
- Modulació de la portadora: BPSK/QPSK/16QAM/64QAM (adaptatiu o fix);
- sensibilitat de recepció: -110dBm @ 1MHz;
- Retard de transmissió: uns 2 ms per un sol salt;
- Startup time: punt a punt, point-to-multipoint≤5S (AD-Hoc start-up time 25S);
- Temps d'accés a la xarxa: menys que 1 segon;
- Canvi d'encaminament: menys que 1 segon;
- interfície de dades: network port x 2, RS232 x 2;
- Font d'alimentació de la bateria: 12V / 1;
- Power consumption of the whole machine: 6~12W, standby 6W, receiving 8W, full load sending 12W;
- temperatura de treball: -40~ + 70 ℃;
- mida: llargada: 73mm*width 47mm*height 10mm;
- pes: 60g
Data Chart
modulació |
1MHz Bandwidth (mbps) | 2MHz
Ample de banda (mbps) |
4MHz
Ample de banda (mbps) |
8MHz
Ample de banda (mbps) |
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 |
Preguntes freqüents més
Q: Why does the radio transceiver seem to power on in seconds and power off always restart?
la: 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?
la: 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, per exemple, 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 (canal) via the UART AT command?
la: si, 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.ample de banda 10 (frequency bandwidth)
wlan.radios.0.canal 2 (channel)
END-AT-API
(The numbers 30, 10, i 2 of the above command should change to what you want the number. )
Q: Does the radio support frequency hopping/ changing dynamically?
la: We have many models that support the frequency hopping function (Aquest model va ser dissenyat per a la transmissió sense fil de dades i vídeo amb un enllaç de dades sense fil bidireccional). 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?
la: Segur. 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?
la: Supports up to 32-node networking. Too many nodes will cause high system overhead and the network will be very unstable. En general, a dozen nodes are recommended.
Q: Is the relay function available in this modem? if yes then how many hops possible?
la: Support relay function. Max 5 hops in the one line.
Q: Can we decrease the data rate to increase the range?
la: si.
Q: Does the frequency band support 2280 Mhz to 2380 mhz?
la: 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?
la: 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.
Si us plau, comproveu la imatge següent.
descarregar
Vcan1401 mesh version serial port AT setting routine description.pdf