SNM401 Ad Hoc Network Module
![SNM401 Ad Hoc Network Module 14 Level 8 Frequency Hopping Ad Hoc Network](https://i0.wp.com/ivcan.com/wp-content/uploads/2022/06/Level-8-Frequency-Hopping-Ad-Hoc-Network.webp?resize=1020%2C366&ssl=1)
Clàr-innse
1. Tuairisgeul toraidh
SNM401 Centerless Ad Hoc Network Module realizes centerless long-distance communication between modules, and adopts the world’s latest LDPC encoding and decoding technology, compared to the RS level used by traditional radio stations The concatenated convolutional code can have a coding gain of 5dB, and at the same time, through the “self-relay wireless communication” teicneòlas, it innovatively realizes automatic relay between modules, thereby greatly improving the coverage effect and transmission distance. SNM401 adopts ad-hoc network wireless communication technology, any node can receive and process the same signal forwarded by multiple nodes at the same time, combine these signals forwarded from different nodes, demodulate the original information to the greatest extent possible, agus tha astar tar-chuir nas motha aca agus earbsachd tar-chuir nas àirde. Chan fheum teicneòlas conaltraidh gun uèir an lìonra ad hoc slighe, agus bidh ioma nodan a’ dearbhadh gu fèin-ghluasadach am bu chòir dhaibh tòiseachadh air an gluasad air adhart a rèir càileachd nan comharran a fhuaireadh agus neart an achaidh, agus tha an t-sealaidheachd air ùrachadh bho shealaidheachd aon-phuing ioma-hop gu sealaidheachd ioma-phuing ioma-hop. Tha an t-sealaidheachd stàite air ùrachadh gu sealaidheachd mogal. Nuair a thèid nód sam bith san lìonra sealaidheachd a dhì-cheangal bhon lìonra, bidh loidhnichean sealaidheachd eile san lìonra sealaidheachd ag obair gu h-àbhaisteach gus nach bi buaidh air a’ bhuaidh sealaidheachd.
![SNM401 Ad Hoc Network Module 15 SNM401 Ad Hoc Network Module-application](https://i0.wp.com/ivcan.com/wp-content/uploads/2022/06/SNM401-Ad-Hoc-Network-Module-application.webp?resize=750%2C576&ssl=1)
2. Feartan toraidh
![SNM401 Ad Hoc Network Module 16 SNM401 Ad Hoc Network Module feature](https://i0.wp.com/ivcan.com/wp-content/uploads/2022/06/SNM401-Ad-Hoc-Network-Module-feature.webp?resize=1020%2C231&ssl=1)
◆ Tricead obrachaidh: 400-500MHz
◆Single-hop tar-chur astar: 3mu 5km
◆Dynamic topology co-fhilleadh: 1ms
◆ Transmit cumhachd: 1W
◆ Faigh cugallachd: -127dBm
◆ Ag obair bholtaids: 3.5-4.5V
◆ Co-mheas comharra ri fuaim: 1DB
◆ Beàrnan sianal: 12.5KHz
◆ Seasmhachd tricead: 1ppm
◆ Eadar-mhodaladh: 65DB
◆Crioptachadh: 256AES
◆ Dìonachd freagairt spùtach: 75DB
◆ Roghainn sianal ri thaobh: [email protected]
◆ Teòthachd obrachaidh: -40~ +85 ℃
◆ Meud modal: 33.5X42X3.4mm
![SNM401 Ad Hoc Network Module 17 SNM401 Ad Hoc Network Module feature-2](https://i0.wp.com/ivcan.com/wp-content/uploads/2022/06/SNM401-Ad-Hoc-Network-Module-feature-2.webp?resize=1020%2C214&ssl=1)
3. Iarrtas
◆ Eadar-lìon nan Rudan ◆ Siostam Saighdear Pearsanta ◆ Craoladh Èiginn
◆UAV ◆ Smachd Iomallach fìor-ùine ◆ Intercom didseatach
◆ Conaltradh èiginneach ◆ Robot ◆ Tar-chuir dàta gun uèir
![SNM401 Ad Hoc Network Module 18 SNM401 Ad Hoc Network Module support multi-point merge transmission](https://i0.wp.com/ivcan.com/wp-content/uploads/2022/06/SNM401-Ad-Hoc-Network-Module-support-multi-point-merge-transmission.webp?resize=750%2C640&ssl=1)
4. Paramadairean obrach
Clàr 1: Clàr Parameters Obrachaidh
paramadair | Cumhachan | As ìsle | àbhaisteach | Teòthachd as àirde tron | Aonad |
Còmhlan Tricead Obrachaidh | 400 | 500 | MHz | ||
Teòthachd Obrach | -40 | 25 | +85 | ℃ | |
Obrach bholtaids | 3.5 | 4 | 4.5 | V | |
Cumhachd tar-chuir | 30 | dBm | |||
A 'faighinn Mothachadh | -130 | -127 | -125 | dBm | |
Cumhachd cuir a-steach RF as àirde | +33 | dBm | |||
ìre baud port serial | 115200 | bps | |||
sruth cadail | @ IN=0 | 40 | uA | ||
fhaighinn an-dràsta | 160 | MA | |||
tar-chuir sruth sa bhad | @VCC==4V, 1W | 1800 | MA | ||
tar-chuir sruth cuibheasach | @VCC==4V, 1W | 600 | MA | ||
bholtaids cuir a-steach claisneachd | 1.5 | VPP | |||
toradh claisneachd Impedance | 150 | Ohm |
Nota: Ma tha suidheachadh obrach a’ mhodail nas àirde na na luachan crìche gu h-àrd, faodaidh e milleadh maireannach a dhèanamh air a’ mhodal.
5. Pinn mhodalan agus mìneachaidhean
![SNM401-Ad-Hoc-Network-Module-pin-defin SNM401-Ad-Hoc-Network-Module-pin-define](https://i0.wp.com/ivcan.com/wp-content/uploads/2022/06/SNM401-Ad-Hoc-Network-Module-pin-define.webp?resize=777%2C816&ssl=1)
Figear 1 SNM401 pin Diagram
Giorrachadh | Tuairisgeul |
AI | Cuir a-steach analog |
TO | Toradh analog |
AIO | Analog dà-stiùireadh |
BHO | Cuir a-steach didseatach |
DÈ | Toradh didseatach |
DIO | Dà-stiùireadh didseatach |
P | cumhachd |
G | Grunnd |
Clàr 3 Mìneachadh pin SNM401
Pin NO | Ainm pin | Type | Tuairisgeul |
1 | GND | G | GND |
2 | Ant | AIO | port antenna |
3 | GND | G | GND |
4 | GND | G | GND |
5 | VBAT | P | Bataraidh 3.5V-4.5V taobh a-muigh no solar cumhachd, 4V air a mholadh |
6 | VBAT | P | |
7 | GND | G | GND |
8 | GND | G | GND |
9 | TX_STATE | DÈ | Comharra comharra tar-chuir modal, tha an ìre àrd tar-chuir |
10 | RX_STATE | DÈ | modal a’ faighinn comharra comharrachaidh, tha an ìre àrd a 'faighinn |
11 | NC | Gun cheangal | |
12 | NC | Gun cheangal | |
13 | GND | G | GND |
14 | TXD | DÈ | prìne tar-chuir dàta port sreathach |
15 | RXD | BHO | prìne faighinn dàta port sreathach |
16 | SET | BHO | modal Comharra rèiteachaidh port sreathach, rèiteachadh crìochan nuair a tha ìre àrd, cuir agus faighinn dàta aig ìre ìosal |
17 | ANNS | BHO | comharra comas fosgailte modal, ìre àrd fosgailte, ìre ìosal faisg air làimh |
18 | GND | G | GND |
19 | PRO1 | DIO | prìne mìneachadh prògramaichte |
20 | PRO2 | DIO | prìne mìneachaidh prògramaichte |
: Tha am modal air a riaghladh le 3.3V LDO taobh a-staigh, agus tha a h-uile IO didseatach aig ìre 3.3V.
6. Package meud
![SNM401-Ad-Hoc-Network-Module-meud-meud SNM401-Ad-Hoc-Network-Module-size-dimension](https://i0.wp.com/ivcan.com/wp-content/uploads/2022/06/SNM401-Ad-Hoc-Network-Module-size-dimension.webp?resize=1020%2C557&ssl=1)
Figear 2 SNM401 clàr meud
![SNM401-Ad-Hoc-Network-Module-Package-diagram SNM401-Ad-Hoc-Network-Module-Package-diagram](https://i0.wp.com/ivcan.com/wp-content/uploads/2022/06/SNM401-Ad-Hoc-Network-Module-Package-diagram.webp?resize=1020%2C744&ssl=1)
Figear 3 SNM401 Figear pacaid
7. LAYOUT precautions
1.ThaSNM401 modal ag obair aig 400-500MHzagus bu chòir buaidh diofar fhactaran air transceivers gun uèir a sheachnadh.
- Tha e air a chuir sìos fon mhodal GND, agus tha na lorgan air an leudachadh chun iomall cho fada 'sa ghabhas.
- Thathas a’ moladh stuth inslitheach a chleachdadh gus suidheachadh sreap nam modal air an t-substrate a sgaradh, mar eisimpleir, cuir pìos slàn san t-suidheachadh seo
sgàilean-sìoda
- Feuch ri loidhne cumhachd goirid is tiugh a thoirt don mhodal, is e an leud loidhne copair a thathar a’ moladh80mil, agus bu chòir an capacitor dì-cheangail a chuir cho faisg air a’ phrìne cumhachd sa ghabhas.
![SNM401 Ad Hoc Network Module 22 SNM401 Ad Hoc Network Module-net construction](https://i0.wp.com/ivcan.com/wp-content/uploads/2022/06/SNM401-Ad-Hoc-Network-Module-net-construction.webp?resize=750%2C463&ssl=1)
8. Suidheachadh bathar-bog
8.1 Suidheachadh paramadair
Faodaidh luchd-cleachdaidh paramadairean fhaighinn agus a rèiteachadh tron phort sreathach, an ìre baud port sreathach tha 115200, tha am pìos dàta 8bit, tha am pìos stad 1bit, agus cha'n 'eil pairt co-ionannachd ann.
Clàr 4 Fòrmat pasgan serial port
Pasgan clàr port sreathach | |||
facal aithneachaidh | faid | àithne | stiùireadh freagairt/freagairt susbaint |
1Bealltainn | 1Bealltainn | 1Bealltainn | NBbeite |
8.1.1 Facal aithneachaidh
Tha am facal aithneachaidh stèidhichte mar 0x68.
8.1.2 Length
Length Àireamhachadh ìre tar-chuir siostam tar-chuir gun uèir COFDM àithne + susbaint àithne/freagair susbaint.
8.1.3 àithne
tha an scrion gorm air a thaisbeanadh gu fèin-ghluasadach 5 Liosta-stiùiridh sreathach
Dleastanas | àithne | -susbaint | Freagair Susbaint |
Faigh paramadairean RF | 0x00 | Chan eil | Frequency(4Bealltainn) +cumhachd(1Bealltainn) +Configuration
Inbhe(1Bealltainn) +Fuaim(2Bealltainn) +Bun-bhann Tionndadh Àireamh(1Bealltainn) |
Suidhich paramadair RF | 0x01 | Frequency(4Bealltainn) +cumhachd(1Bealltainn) | Chan eil |
ìre sealaidheachd dàta | 0x0C | Chan eil | ìre sealaidheachd dàta(1Bealltainn) |
Suidhich ìre sealaidheachd dàta | 0x0d | Ìre sealaidheachd dàta(1Bealltainn) | Chan eil |
iuchair ri fhaighinn | 0x0e | Chan eil | iuchair(32Bealltainn) |
iuchair shuidhichte | 0x0F | iuchair(32Bealltainn) | chan eil |
faigh dreach modal | 0x12 | chan eil | ainm modal + àireamh dreach |
modal deiseil | 0x55 | chan eil | chan eil |
sàbhail rèiteachadh | 0x66 | chan eil | chan eil |
dàta fhaighinn | 0xA2 | chan eil | dàta follaiseach (NBbeite) |
cur dàta | 0xB2 | dàta follaiseach (NBbeite) | chan eil |
8.1.4 Instruction content/reply content
8.1.4.1 A 'faighinn crìochan RF
Frequency: Tha an aonad Hz, tha an raon rèiteachaidh ~500000000, agus tha an cruinneas 500HHz.
cumhachd:1-cumhachd àrd 1W,0-cumhachd ìosal 0.5W, tha cumhachd àrd aig an àbhaist 1W.
Inbhe rèiteachaidh: A’ nochdadh suidheachadh rèiteachaidh an rèidio,0-neo-stèidhichte,1-a' rèiteachadh,2-air a rèiteachadh gu soirbheachail.
Làr fuaim: Indicates the current frequency noise intensity, a tha 2 is meaningful
Baseband version number: The upper 4 pìosan represent the major version number, and the lower 4 pìosan represent the minor version number.
Configuration Packet:0x68 0x01 0x00
Return Packet:0x68 0x0A 0x00 Frequency Power Configuration Status Noise Floor Baseband Version No.
8.1.4.2 Setting RF Parameters
After configuring RF parameters, you must wait for the successful configuration (mu dheidhinn 2 seconds) before the module can enter the setting work correctly state.
Configuration package:0x68 0x06 0x01 Frequency power
return package:0x68 0x01 0x01
8.1.4.3 Obtaining data relay level
SH ad hoc network technology is a simulcast mesh relay method, which does not require routing, which can greatly improve the coverage.number of relay hops N refers to the number of hops that can be relayed during data transmission, and the maximum number of relay hops is 16. With each additional hop, the transmission distance doubles, but the transmission time increases accordingly, as shown in the table below.
Clàr 6 Comparison of Relay Levels
Relay Hops | Transmission Bytes | Ùine tar-chuir |
N | <36 | N*50ms |
N | 37-72 | N*100ms |
N | 73-108 | N*150ms |
N | 109-144 | *200ms |
N | 145-180 | N*250ms |
N | 181-216 | N*300ms |
N | 217-252 | N*350ms |
N | 253-288 | N*400ms |
Configuration package: 0x68 0x01 0x0C
Pacaid air ais: 0x68 0x02 0x0C ìre sealaidheachd dàta
8.1.4.4 Suidhich ìre sealaidheachd dàta
Configuration package:0x68 0x02 0x0d Ìre sealaidheachd dàta
pacaid tilleadh:0x68 0x01 0x0d
8.1.4.5 Faigh an iuchair
iuchair airson crioptachadh conaltraidh, tilgidh am modal air falbh gu fèin-ghluasadach am fiosrachadh guth agus fiosrachadh dàta aig a bheil an iuchair neo-chunbhalach leis an iuchair aige fhèin, agus is e an iuchair gu lèir 0.
Configuration Packet:0x68 0x01 0x0E
Return Packet:0x68 0x21 0x0E prìomh
8.1.4.6 Suidhich iuchair
Configuration Packet:0x68 0x21 0x0F prìomh
Return Packet:0x68 0x01 0x0F
8.1.4.7 Faigh Modal Version
Configuration Packet:0x68 0x01 0x12
Return Packet:0x68 0x15 0x12 0x53 0x69 0x6d 0x75 0x6c 0x48 0x6f 0x63 0x32 0x31 0x38 0x5f 0x31 0x31 0x30 0x2e 0x30 0x00 tha“Simulhoc2618_V1.0.0”
8.1.4.8 modal
Pacaid air ais:0x68 0x01 0x55
8.1.4.9 Sàbhail rèiteachadh
àithne airson a h-uile suidheachadh a shàbhaladh gu Flash, agus thèid an rèiteachadh sàbhalaidh a chleachdadh gu dìreach às deidh cumhachd-air.
Configuration package:0x68 0x01 0x66
Pacaid air ais:0x68 0x01 0x66
8.1.4.10 Glacadh dàta
Nuair a bhios an SET tha am prìne ìosal, cuiridh am modal am pasgan dàta a fhuaireadh chun neach-cleachdaidh gu follaiseach. Bidh an fhaid ag atharrachadh a rèir an fhìor fhaid dàta tar-chuir follaiseach.
Pacaid air ais:0x68 Length 0xA2 follaiseach
8.1.4.11 Tar-chuir dàta
A-mhàin nuair a bhios an SET tha prìne aig ìre ìosal an urrainnear dàta a chuir thairis, agus chan eil an dàta a chaidh a chuir ann an aon tar-chuir nas àirde 36 bytes. Bidh an fhaid ag atharrachadh a rèir an fhìor fhaid dàta tar-chuir follaiseach. Ma gheibhear pasgan tilleadh, tha e a’ nochdadh gun do dh’fhàillig an sgaoileadh dàta an turas seo.
Configuration package: 0x68 Fad 0xB2 Dàta follaiseach
return package: 0x68 0x01 0xB
![SNM401 Ad Hoc Network Module 23 SNM401 Ad Hoc Network Module stereo network](https://i0.wp.com/ivcan.com/wp-content/uploads/2022/06/SNM401-Ad-Hoc-Network-Module-stereo-network.webp?resize=750%2C435&ssl=1)