WESDAC D20ME | GE | Fixed sequence data controller

Description

WESDAC D20ME | GE | Fixed sequence data controller

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WESDAC D20ME  Overview:
1) Low communication speed: 9600bps; Poor safety; But the communication distance and penetration are very strong;
2) Only support star topology relationships;

3) Different forms of 433:
(1) Integrated chip (can run protocol stack, specific example LoRa): functions such as connection, networking, and traversing different frequency bands;
(2) MCU+RF IC: * * * * Fixed sequence data; Fixed frequency band transmission;
4. The difference between WESDAC D20ME and infrared:
1) The transmission medium is inconsistent (433 is wireless transmission, infrared is infrared light transmission), and the propagation direction is different;
2) Transmission distance, encryption technology, etc;
5. WESDAC D20MEencoding format:

1) Fixed code: plaintext transmission;
2) Rolling code: Strong confidentiality, automatically changing the code after each * * * *; If the number of addresses is greater than 100000, the probability of using duplicate codes is extremely low;
6. 433 Three axis antenna WESDAC D20ME:
1) Resonant frequency;
2) Induced current:
7. Problems and difficulties in 433 development:
1) The implementation of low power consumption is the biggest challenge of 433;
2) The power consumption relationship between the receiving end and the * * * end:
(1) The weaker the signal, the greater the power consumption consumed by the receiving end;
(2) Control the RF time interval between the * * * end and the receiving end; Realize different power consumption combinations;
8. ASK: Amplitude Shift Keying

9. Low power 433 scheme design:
1) Remote control solution: HD8301 crystal oscillator+SC3356
2) Low power implementation:
(1) Timed wake-up reception;
(2) Try to increase the time compression ratio as much as possible;
3) Be careful not to handle too much interrupt reception, such as minimizing the number of printed statements to ensure the integrity of data reception;

Mailbox：sauldcsplc@gmail.com |GE WESDAC D20ME
www.abbgedcs.com | Qiming Industrial Automation| Simon +86 13822101417