SNM401自组网模块规格书
1、产品描述
SNM401无中心自组网模块实现了各模块相互之间的无中心远距离通信,采用全球最新的LDPC编解码技术,相对于传统电台所使用的RS级联卷积码可有5dB的编码增益,同时通过 “自中继无线通信”技术,创新性地实现各模块之间自动中继,从而大大提高了覆盖效果和传输距离。SNM401采用自组网无线通信技术,任意节点可以接收处理来自多个节点同时转发的同一信号,将这些来自不同节点转发的信号进行信号合并,最大可能地解调原始信息,具有更大的传输距离和更高的传输可靠性。自组网无线通信技术不需要路由,多个节点通过接收信号质量和场强自动判决是否启动转发,将中继由多跳单点中继提升为多跳多点中继,将中继从线状中继提升为网状中继,中继网络中任意节点发生断线脱网时,中继网络中的其它中继线路正常工作,使得中继效果不受影响。
2、产品特点
◆工作频率:400-500MHz
◆单跳传输距离:3~5Km
◆动态拓扑收敛:1 Millisecond
◆发射功率:1The
◆接收灵敏度:-127dBm
◆工作电压:3.5-4.5V
◆信噪比门限:1DB
◆信道间隔:12.5KHz
◆频率稳定度:1ppm
◆互调:65DB
◆加密:256AES
◆杂散响应抗扰性:75DB
◆邻道选择性:65[email protected]
◆工作温度:-40~+85℃
◆模块尺寸:33.5X42X3.4mm
3、Sebaka sa kopo
◆物联网 ◆单兵系统 ◆应急广播
◆无人机 ◆实时远程控制 ◆数字对讲
◆应急通信 ◆机器人 ◆无线数据传输
4、工作参数
表一:工作参数表
参数 | 条件 | 最小 | 典型 | 最大 | 单位 |
Khafetsa ea ho sebetsa | 400 | 500 | MHz | ||
Mocheso oa ho sebetsa | -40 | 25 | +85 | ℃ | |
bueloang gagamalo | 3.5 | 4 | 4.5 | V | |
Fetisetsa matla | 30 | dBm | |||
Ho amohela kutlo | -130 | -127 | -125 | dBm | |
最大射频输入功率 | +33 | dBm | |||
串口波特率 | 115200 | bps | |||
休眠电流 | @ EN=0 | 40 | uA | ||
接收电流 | 160 | MA | |||
发射瞬时电流 | @VCC==4V,1The | 1800 | MA | ||
发射平均电流 | @VCC==4V,1The | 600 | MA | ||
音频输入电压 | 1.5 | VPP | |||
音频输出阻抗 | 150 | Ohm |
注:如果模块工作条件超过上述各项极限值,可能对模块造成永久性损坏。
5、模块引脚及定义
图 1 SNM401 引脚图
表 2 类型缩写表
缩写 | 描述 |
AI | Analog input |
AO | Analog output |
AIO | Analog bi-direction |
DI | Digital input |
DO | Digital output |
DIO | Digital bi-direction |
P | matla |
G | Fatshe |
表 3 SNM401引脚定义
Pin NO | Pin name | mofuta | Tlhaloso |
1 | lakg | G | lakg |
2 | bohloa | AIO | 天线口 |
3 | lakg | G | lakg |
4 | lakg | G | lakg |
5 | V-BAT | P | 外接 3.5V-4.5V 电池或电源,建议 4V |
6 | V-BAT | P | |
7 | lakg | G | lakg |
8 | lakg | G | lakg |
9 | TX_STATE | DO | 模块发射指示信号,高电平为发射 |
10 | RX_STATE | DO | 模块接收指示信号,高电平为接收 |
11 | NC | No connect | |
12 | NC | No connect | |
13 | lakg | G | lakg |
14 | TXD | DO | 串口数据发射脚 |
15 | RXD | DI | 串口数据接收脚 |
16 | SET | DI | 模块串口配置信号,高电平时配置参数,低电平时收发数据 |
17 | EN | DI | 模块开启使能信号,高电平开启,低电平关闭 |
18 | lakg | G | lakg |
19 | PRO1 | DIO | 可编程定义管脚 |
20 | PRO2 | DIO | 可编程定义管脚 |
注:模块内部经过 3.3V LDO 稳压,所有的数字 IO 均为 3.3V 电平。
6、封装尺寸
图 2 SNM401 尺寸图
图 3 SNM401 封装图
7、LAYOUT 注意事项
1、SNM401 模块工作在 400-500MHz,应避免各种因素对无线收发的影响。
2、模块下方铺大片 GND,走线尽量往外围延伸。
3、建议在基板上的模块贴装位置使用绝缘材料进行隔离,例如在该位置放一个整块的丝
印。
4、尽量走一条短而粗电源线给模块,推荐铜线宽度80mil,去耦电容尽量靠近电源引脚放置。
8、软件配置
8.1 参数配置
用户可通过串口进行参数获取配置,串口波特率 115200,数据位 8bit,停止位 1bit,无奇偶校验位。
表 4 串口包格式
串口表格包 | |||
识别字 | 长度 | 指令 | 指令回复/回复内容 |
1Byte | 1Byte | 1Byte | NBytte |
8.1.1 识别字
识别字固定为 0x68。
8.1.2 长度
长度 = 指令 + 指令内容/回复内容。
8.1.3 指令
表 5 串口指令表
功能 | 指令 | 指令内容 | 回复内容 |
获取射频参数 | 0x00 | 无 | maqhubu(4Byte)+matla(1Byte)+配置 状态(1Byte)+底噪(2Byte)+基带 版本号(1Byte) |
设置射频参数 | 0x01 | maqhubu(4Byte)+matla(1Byte) | 无 |
获取数据中继等级 | 0x0C | 无 | 数据中继等级(1Byte) |
设置数据中继等级 | 0x0D | 数据中继等级(1Byte) | 无 |
获取密钥 | 0x0E | 无 | 密钥(32Byte) |
设置密钥 | 0x0F | 密钥(32Byte) | 无 |
获取模块版本 | 0x12 | 无 | 模块名称+版本号 |
模块就绪 | 0x55 | 无 | 无 |
保存配置 | 0x66 | 无 | 无 |
数据接收 | 0xA2 | 无 | 透传数据(NByte) |
数据发送 | 0xB2 | 透传数据(NByte) | 无 |
8.1.4.1 获取射频参数
maqhubu:单位为 Hz,设置范围为 400000000~5000000000,精度为 500HHz。
matla:1-高功率 1W,0-低功率 0.5W,默认为高功率 1W。
配置状态:指示射频配置状态,0-未初始化,1-配置中,2-配置成功。
底噪:指示当前频率噪声强度,只有当配置状态为 2 时才有意义。
基带版本号:高 4bit 代表主版本号,低 4bit 代表次版本号。
配置包:0x68 0x01 0x00
返回包:0x68 0x0A 0x00 频率 功率 配置状态 底噪 基带版本号
8.1.4.2 设置射频参数
配置射频参数后,须等待配置成功后(约 2 秒),模块才能正确进入设定工作状态。
配置包:0x68 0x06 0x01 频率 功率
返回包:0x68 0x01 0x01
8.1.4.3 获取数据中继等级
SH无中心自组网技术是同播网状中继方式,不需要路由,可大幅度提高覆盖范围。中继跳数 N 是指在数据传输时可以进行中继的跳数,最大中继跳数为 16。每增加一跳,传输距离会增加一倍,但传输时间会相应增加,如下表所示。
表 6 中继等级比较
中继跳数 | 传输字节数 | 传输时间 |
N | <36 | N*50ms |
N | 37-72 | N*100ms |
N | 73-108 | N*150ms |
N | 109-144 | N*200ms |
N | 145-180 | N*250ms |
N | 181-216 | N*300ms |
N | 217-252 | N*350ms |
N | 253-288 | N*400ms |
返回包:0x68 0x02 0x0C 数据中继等级
8.1.4.4 设置数据中继等级
配置包:0x68 0x02 0x0D 数据中继等级
返回包:0x68 0x01 0x0D
8.1.4.5 获取密钥
密钥用于通信加密,模块将自动丢弃密钥与自身密钥不一致的语音信息、数据信息,密钥默认为全 0。
配置包:0x68 0x01 0x0E
返回包:0x68 0x21 0x0E 密钥
8.1.4.6 设置密钥
配置包:0x68 0x21 0x0F 密钥
返回包:0x68 0x01 0x0F
8.1.4.7 获取模块版本
配置包:0x68 0x01 0x12
返回包:0x68 0x15 0x12 0x53 0x69 0x6D 0x75 0x6C 0x48 0x6F 0x63 0x32 0x36 0x31 0x38 0x5F 0x56 0x31 0x2E 0x30 0x2E 0x30 0x00 即“SimulHoc2618_V1.0.0”
8.1.4.8 模块就绪
指令将在设备上电初始化完成后自动发送,指示设备已就绪。
返回包:0x68 0x01 0x55
8.1.4.9 保存配置
指令将所有设置保存至 Flash,重上电后将直接使用已保存配置。
配置包:0x68 0x01 0x66
返回包:0x68 0x01 0x66
8.1.4.10 数据接收
当 SET 引脚为低电平时,模块将接收到的数据包直接透传给用户。长度根据实际透传数据长度变化。
返回包:0x68 长度 0xA2 透传数据
8.1.4.11 数据发送
当 SET 引脚为低电平时,才能进行数据发送,单次发送数据不超过 36 字节。长度根据实际透际透传数据长度变化。若收到返回包,表明本次数据发送失败。
配置包:0x68 长度 0xB2 透传数据
返回包:0x68 0x01 0xB
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phetiso Distance
Tsamaiso ea Tsamaiso ea Sefofane
Kenyelletso ea Video ea Transmitter
Mokhoa oa ho fetisa o se nang mohala
Tšitiso le Pono
Encrypt le decrypt
Sesebelisoa sa phetiso
Tataiso ea Lintlha
Antenna
Lipotso mabapi le Wireless Video Transmitter le Receiver
Li-transmitter tsa rona tsa video tse se nang mohala li na le mefuta ena ea li-interface tsa ho kenya livideo: HDMI 1080P le 4K HDMI, CVBS e kopantsoe, SDI, AHD, IP Ethernet, BNC, kapa o re bolelle hore na o hloka mofuta ofe, moenjiniere oa rona o tla fetola ho fihlela tlhoko ea hau.
Sebaka sa rona sa phetisetso se ka fetoloa ka ho eketsa li-amplifiers tsa matla. Hajoale, tse ka sehloohong li 15km SE, 30km SE, 50km SE, 80km SE, 100km SE , le 150km, e itshetlehileng ka ditlhoko tsa bareki.
Ehlile, libaka tsa phetiso tse thathamisitsoeng ka holimo kaofela li ka hare LOS moeli oa pono. Haeba ho na le litšitiso lipakeng tsa transmitter le moamoheli, NLOS (ya se nang moeli), sebaka sa phetiso se fokotsehile haholo, 1km feela kapa 2km, ho ipapisitse le palo ea litšitiso tse lipakeng le tikoloho ea lehae e se nang mohala.
Tsela e le 'ngoe bolela, Re ka fetisetsa feela le ho khoasolla video kapa data ho tsoa ho transmitter ea video e se nang mohala ho ea ho e amohelang ka nqa e le 'ngoe, 'me re ke ke ra kenya video kapa data ho tsoa ho moamoheli ho ea ho transmitter. Mofuta ona o boetse o bitsoa simplex.
Tse pedi-tsela e bolela seo, ha se feela hore re ka khoasolla video kapa data ho tsoa ho transmitter ea rona e se nang mohala ho ea ho moamoheli, empa hape re ka kenya video kapa data ho tsoa ho moamoheli ho ea ho transmitter. Sena se loketse haholo bakeng sa ho sebetsa li-drones. U ke ke ua bona feela video ea nako ea 'nete e fetisitsoeng ho tsoa ho drone, empa hape kenya taelo ea ho laola drone kapa taelo ea ho laola khamera ea PTZ ho fetola angle ho transmitter.. Sena se ka sebetsa ka nako e le 'ngoe. Mofuta ona o boetse o rehile halofo-dulpex kapa full-duplex.
Ka kopo, sheba lintlha ho sehokelo se ka tlase. https://ivcan.com/request-a-quote-of-wireless-video-transmission/#simplex
Li-transmitter tse ngata tsa Wireless li se li tšehetsa AES128 kapa AES256 bit encryption le decryption, ho itšetlehile ka hore na u khetha mohlala ofe. Ka kopo ikopanye le rona ho netefatsa.
Maqhubu a li-transmitter tsa video tse se nang mohala le moamoheli oa video oa waelese e ka fetoloa. Basebelisi ba hloka ho reka liboto tse ling tsa tlhophiso ea parameter.
Leha ho le joalo, Ha ho nahanoa hore amplifier ea matla le antenna li se li ntse li tsitsitse ka har'a mefuta e itseng ha thepa e romeloa.. Haeba mosebelisi a lokisa maqhubu a transmitter, tse tsamaellanang matlafatso a matla, antenna ea transmitter le antenna e amohelang le eona e lokela ho fetoloa hore e be maqhubu a tšoanang, mme basebelisi bana ba hloka ho lokisoa. Haeba ho se joalo, e tla etsa hore maqhubu a transmitter ea video e se nang mohala a fapane le maqhubu a antenna, ho etsa hore kamohelo e be thata. Ka hona, ka kopo etsa bonnete ba hore u tsebisa makhetlo a nepahetseng ao u a hlokang pele u etsa odara.
Haeba e le bakeng sa tshireletso kapa lekunutu, u ka khona sebelisa encryption le decryption mesebetsi ea transmitter le receiver, e ka netefatsang hore phetiso ea video ea hau ke ea lekunutu. .
E, lihlahisoa tsohle tsa rona paramethara ka customized ho latela litlhoko tsa moreki. Haeba u na le kopo e khethehileng, ka kopo, re tsebise ka sehokelo se ka tlase.
https://ivcan.com/request-a-quote-of-wireless-video-transmission/
- Fetola sebaka sa moamoheli ho qoba tšitiso e ka bang teng ea lehae ho tsoa tikolohong e matla ea makenete.
- Netefatsa hore manakana a bulehile ka bobeli transmitter le receiver li tsepame.
- Ka kopo phahamisa manakana a transmitter le moamoheli ho boloka phapang e itseng ya bophahamo.
- Ka kopo sheba hohle ho netefatsa hore ha ho na litšitiso pakeng tsa transmitter le receiver.
- Fetola mokhoa ea lenaka la moamoheli.
- Haeba e sa sebetse, leka ho tsamaisa seamohedi hore se be pela sebaka sa transmitter ho bona hore na e feta sebaka se sebetsang sa phetiso ea waelese.
- Kapa nahana ho eketsa phetiso pakeng tsa sefetisi le moamoheli.
- Antenna e lokela ho ba holimo ka hohle kamoo ho ka khonehang, joalo ka ha mobu o tla monya lets'oao le fetisoang.
Ehlile, re boetse re utloisisa hore li-transmitters le li-receiver tsa video tse se nang mohala li theko e boima haholo. O hole le feme ea China. 'me u tšepa hore thepa eo u e fumanang e loketse ho sebetsa hantle.
Haeba u ela hloko ka ho khetheha parameter e itseng kapa mosebetsi, re ka nka livideo tsa liteko ho latela likarolo tseo u batlang ho li bona, ka kopo ikutloe u lokolohile ho ikopanya le rona. E ke ke ea romelloa ho uena ka kotloloho ntle le tumello ea hau.
Ho lekola tieho ea transmitter ea video e se nang mohala le moamoheli, re hloka ho etsa liteko tse peli.
Ea pele ke ho lekola tieho ho tloha khamera ho ea skrineng.
Ea bobeli ke khamera, hammoho le ponts'o le mochini o tsamaisang litšoantšo o se nang mohala le tieho ea moamoheli.
Ho tlosa liphetho tse peli tsa liteko ke tieho ea 'nete ea transmitter ea video e se nang mohala le moamoheli.
Joaloka setsebi sa nako e telele sa HDMI se fetisang mohala oa video le mofani oa thepa le moetsi oa China Shenzhen, re hlahisa transmitter ea video e ntle ka ho fetesisa le moamoheli ka lilemo tse ngata, mme re na le botumo bo botle le maikutlo a matle.
Mefuta e meng e tsebahalang ea li-transmitters tsa video tse se nang mohala, joalo ka Blackmagic, Holyland mars 300 400's, Acsoon cine eye 5g, RavenEye, Zhiyun, Inkee benbox, actiontec, CVW SWIFT 800, dahua, iogear, Artek pat-225k, microlite, koenya, teradec.
Theko e ntle ka ho fetisisa ea tekanyetso e fetisang molaetsa oa video le moamoheli o na le lits'ebetso tse ngata, bakeng sa 4K tv, Khamera ea ts'ireletso ea CCTV, khamera ea ho boloka koloi, Sesebelisoa sa k'hamera ea video ea PTZ, e nang le betri, khomphuta, sony camcorder, sistimi ea kopano ea video ea wifi, CANON DSLR, Drone ea UAV, laptop ea k'homphieutha, seporojeketara, ka-koloi, IPhone iPad, ho phallela ho phela, Khamera ea lipapali ea GoPro, raspberry pi, Xbox.
Video e felletseng ea HD, mamelwang, data link transmitter e nyane ka ho fetisisa ea 1080P e se nang mohala mme moamoheli o na le likhokahanyo tse ngata tsa ho kenya le ho tsoa, joalo ka CVBS e kopaneng ea AV, HDMI, SDI, BNC, VGA, USB.
Motlatsi oa mohala oa mohala oa TX RX o na le 170-806Mhz, 1.2ghz, 2.4G, 5.8G, latency e tlase haholo empa eseng lefela. E le ho tšehetsa libaka tse telele, amplifier ea matla e na le 10w, 20Watts, esita le 30W.
Ke eng e ntle ka ho fetisisa ea ho reka FHD wireless video transmitter ka theko e tlase? E lokela ho ela hloko litlhoko tsa hau tsa lintlha, khetha ka tsela e loketseng, e sa turung, ha o na le pelaelo, Ka kopo phethahatsa the kopa qotso sebopeho, moenjiniere oa rona o tla u fa tharollo.
Sesebelisoa sa morao-rao sa 2W Power Amplifier 27 KM ea nako e telele e amohelang mohala oa mohala oa video e phelang demo setšoantšo se hokahanyang phetiso ka 2022
Bakeng sa ho bonts'a bareki ba rona hamolemo sebaka sa ts'ehetso sa 'nete le ho sebelisa sephetho sa 2W PA 30km phetisetso le moamoheli oa litšoantšo tsa sebaka se selelele., re ile ra etsa tlhahlobo ea sebele haufinyane 'me ra fumana Meisha Peak, ho tloha mona ho ea lebōpong la leoatle la Nan’ao, Sebaka ke 27 lik'hilomithara. Sena [...]
Bala HaholoanyaneHlakola
Transmitter e ncha ea nako e telele e se nang mohala le e amohelang kh'amera ea drone 110km 10W PA sehokelo sa audio ea data e se nang mohala ea tlhahlobo ea nnete.
110Km video ea teko ea video e fetisang mohala oa nako e telele le moamoheli bakeng sa kh'amera ea video ea drone Hobaneng re batla ho etsa tlhahlobo ee ea bolelele ba 110km lekhetlong lena? Bareki ba bang ba mpotsa sebaka se selelele ka ho fetisisa sa transmitter ea video e se nang mohala le moamoheli, joale re khothalelitse mofuta ona oa 10W Power Amplifier, [...]
Bala HaholoanyaneOct
Haufinyane tjena Wireless Video Audio Audio Transmitter le Receiver Test Video in 2022
Wireless Video Audio Audio Transmitter le Receiver TX900 2 Video ea liteko tsa Watts 27km ho tloha tlhōrōng ea thaba ho ea lebōpong la leoatle. (Video ka hare) Wireless Video Audio Audio Transmitter le Receiver, Tse pedi-tsela, Khoasolla-Laola Moreki o bone video ea rona ea tlhahlobo ea 'nete mabapi le 2 watts Power Amplifier 27km e fetisang mohala ka mohala o molelele oa video le moamoheli. Eena [...]
Bala HaholoanyaneSep
60-80 km waelese video transmitter moamoheli phetiso hlile fofang teko
Ehlile teko e fofang ea drone ea 60-80 km phetisetso ea seamoheli sa video e se nang mohala Sena ke sesebelisoa sa video le se amohelang lik'hamera tsa UAV tsa drone., molemo ka ho fetisisa ho 2023, 'me e na le litlhahlobo tse ngata tse khotsofatsang. E boetse e tšehetsa fatše ho ea fatše, haeba u na le projeke efe kapa efe e hlokang transmitter ea video [...]
Bala HaholoanyaneOct