Ọnụ ụzọ ámá WisGate Raspberry Pi
Akwụkwọ ntuziaka onye ọrụ maka
WisGate RAK7248
Ụdị 1.3| Septemba 2020
www.RAKwireless.com
Gaa leta anyị websaịtị maka akwụkwọ ndị ọzọ.
PEEJI 14
1. N'eluview
1.1. Okwu mmalite
RAK7248 WisGate bụ ngwaọrụ nke nwere Raspberry Pi 4 Model B, RAK2287 nke gụnyere modul GPS na Heat Sink maka ịrụ ọrụ ka mma na njikwa ikpo ọkụ ọkụ. A na-eji akwa aluminom rụọ ụlọ ya.
Maka nrụnye RAK2287 ọ na-eji mgbawa SX1302 sitere na Semtech nke arụnyere n'ime LoRa concentrator IP isi bụ igwe na-ahazi mgbama dijitalụ dị ike. Ọ nwere ike ịnata ihe ruru 8 LoRa ngwugwu n'otu oge ezigara ya na ihe dị iche iche na-agbasa na ọwa dị iche iche ma dị n'ọtụtụ dịgasị iche iche ka enwere ike iji ya maka ọkọlọtọ ọkọlọtọ internartinal. Ikike a pụrụ iche na-enye ohere iji mejuputa ụkpụrụ ụlọ ọrụ netwọk ọhụrụ advantageous karịa usoro ndị ọzọ obere nso. Ọ na-agbaso nkọwapụta Raspberry Pi ma dị mfe iji Raspberry Pi na modul RAK2287 bulie.
WisGate dị mma maka prototyping, ngosipụta nke echiche ma ọ bụ maka nyocha. Ọ gụnyere njikere iji LoRaWan Gateway OS nke enwere ike jikọọ na sava LoRaWan. Ọzọkwa ọ bụ onye nrụpụta enyi ma dị mfe ọbụlagodi maka ndị ọrụ na-enweghị teknụzụ ka ịtọlite usoro LoRaWan. Ọ ga-abụrịrị uru na ọrụ kachasị mma maka njikọta iji lebara ngwa dị iche iche dị ka Smart Grid, Farm Intelligent na ngwa ụlọ ọrụ IoT ndị ọzọ.
1.2. Isi atụmatụ
- Mgbakọ na Raspberry Pi4 Model B(Linux).
- 64-bit SX1302 base band processor, 500 kHz LoRa nnabata na 8
x 8 ọwa LoRa® ihe nchọpụta ngwugwu, 8 x SF5-SF12 LoRa® demodulators, 8 x SF5-SF10 LoRa® demodulators. - GPSModule arụnyere n'ime ya.
- Ọkụ ọkụ arụnyere n'ime ya maka njikwa ikposa ọkụ ọkụ.
- Na-akwado 5V/3A ike ọkọnọ.
- Mmetụta RX gbadara ruo -139dBm@SF12, BW500KHz.
- Ugboro LoRa na-akwado eriri ugboro na-enweghị ikike zuru ụwa ọnụ (EU433,CN470, EU868, US915, AS923, AU915, KR920, IN865 na AS920).
- Ụlọ nwere mkpuchi elu, ahụ, mkpuchi ala na bọọdụ nne riveted kwụsịrị.
- Gụnyere Pi njikere 'ID EEPROM', GPIO ntọlite na osisi ngwaọrụ nwere ike ịhazi ya na-akpaghị aka site na ozi ndị na-ere ahịa. Na-akwado koodu isi mepere emepe nke ejikọrọ na sava LoRaWAN.
1.3. Ihe ngwugwu
2. WisGate RAK7248
2.1. N'eluview
A na-eji ígwè mee shei nke RAK7248
Akụkụ mpụta nke WisGate bụ 92 x 68.3 x 57.2 mm dị ka egosiri n'okpuru.
2.2. Interface
Ọgụgụ 3 | Akụkụ dị n'èzí
Ọgụgụ 4 | Ọnụ ụzọ
2.3. Ọdịdị Sistemu
Ọnụ ọgụgụ na-esonụ na-egosi echiche bụ isi maka usoro LoRaWAN. RAK7248 WisGate bụ ngwọta ngwaike etiti maka nkwukọrịta redio dabere na LoRa niile. Ọ na-anata ma na-ebufe ozi redio. A na-eme nhazi ozi redio yana ọrụ ndị metụtara protocol site na sistemụ nnabata agbakwunyere (Raspberry Pi). A na-eziga ozi redio anatara na ahaziri na sava LoRaWAN. Akụkụ dị mkpa nke ọrụ ndị metụtara protocol bụ n'èzí nke akwụkwọ a.
Ọgụgụ 5 | Ọdịdị Sistemụ WisGate
2.4. RaspberryPi
- Ihe nhazi: Broadcom BCM2711, quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz
- Ebe nchekwa: 2GB LPDDR4
- I/O Port: Gigabit Ethernet; 2 × USB 3.0 ọdụ ụgbọ mmiri; 2 × USB 2.0 ọdụ ụgbọ mmiri
- Njikọta: 2.4 GHz na 5.0 GHz IEEE 802.11b/g/n/ac wirelessLAN, Bluetooth, BLE
2.5.LoRa ugboro na-arụ ọrụ
WisGate na-akwado eriri ugboro LoRaWAN niile dị ka n'okpuru. Kedu nke dị mfe ịhazi mgbe ị na-ewu firmware site na koodu isi mmalite.
|
Mpaghara |
Ugboro ugboro |
|
Europe |
EU433,EU868 |
|
China |
CN470 |
|
North America |
US915 |
|
Asia |
AS923, AS920 |
|
Ọstrelia |
AU915 |
|
Korea |
KR920 |
|
India |
IN865 |
Tebụl 1 | Ugboro ugboro LoRa
2.6.Hardware Structure
RAK2003 Pi HAT bụ bọọdụ ụgbọelu nke RAK2287 LoRa Concentrator nke na-esote Pi. 7
Ọkọlọtọ okpu, enwere ike itinye ya na bọọdụ Pi nwere njikọ 40-pin. RAK2003 na
Ejikọtara RAK2287 site na interface PCI-E.
2.7.Ike chọrọ
WisGate na-arụ ọrụ na 5V/3A. Enwere ike ịkwado ya site na micro USB na 5V.
Parameter Min. Oke kacha.
|
LoRa Txmode |
- |
- |
950mA |
|
Ụdị njikere |
- |
550mA |
- |
|
Ọnọdụ kacha ọkụ |
|
|
930mA |
Tebụl 2| Oriri ike
Mara: LoRa Tx mode: LoRa modul na-arụ ọrụ na mbufe kacha ike steeti. Ọkụ ule mode: Raspberry Pi CPU na ebe nchekwa na-agba ọsọ na ikike zuru oke
2.8.Environmental Requirements
Tebụl dị n'okpuru na-edepụta ọrụ na nchekwa okpomọkụ chọrọ
Parameter Min. Oke kacha.
|
Oke Okpomọkụ arụ ọrụ |
-20 ºC |
+25 ºC |
+65 ºC |
|
Oke okpomoku agbatiri |
-40 ˚C |
|
+85 ˚C |
|
Oke Okpomọkụ Nchekwa |
-40 ˚C |
|
+85 ˚C |
Tebụl 3| Ihe achọrọ gburugburu
2.9.LoRa RF Njirimara
2.9.1 Njirimara RF nnyefe
RAK2287 nwere ezigbo ọrụ nnyefe. A na-atụ aro nke ukwuu iji nhazi nhazi kachasị maka nhazi ọkwa ike, nke bụ akụkụ nke HAL. Nke a na-ebute ọkwa ike mmepụta RF pụtara yana oriri ugbu a.
|
Oke ugboro ugboro |
Nyefee Ike |
Mgbanwe Usoro |
|
923.3-927.5 MHz |
13.39mBm |
LoRa / FSK |
2.9.2 Njirimara RF nnata
A na-atụ aro nke ukwuu, ka iji ụkpụrụ nhazi nhazi RSSI kachasị, nke bụ akụkụ nke HAL v3.1. Maka ha abụọ, Redio 1 na 2, RSSI-Offset kwesịrị ịtọ -169.0. Tebụl na-esote na-enye ọkwa ọgụgụ isi nke RAK2287.
|
Bandwit mgbama / [KHz] |
Ihe Na-agbasa |
Mmetụta / [dBm] |
|
500 |
12 |
-134 |
|
500 |
7 |
-120 |
Tebụl 5 | Njirimara RX RF
3. Mpi
3.1. LoRa Antenna
3.1.1 gafereview
Antenna LoRa nwere njikọ nwanyị RP-SMA egosiri dị ka ọnụ ọgụgụ ndị a.
Ọgụgụ 6 | LoRa Antenna gafereview
3.1.2 Antenna akụkụ
Egosiri akụkụ igwe nke antenna n'okpuru:
Ọgụgụ 7 | LoRa Antenna Dimension
3.1.3 Parameter nke antenna
3.2.GPS Antenna
3.2.1 gafereview
Egosiri antenna GPS maka WisGate n'okpuru.
3.2.2GPS Antenna akụkụ
3.2.3GPS gburugburu chọrọ
Edepụtara ihe achọrọ gburugburu antenna na tebụl n'okpuru:
|
Ọnọdụ |
Okpomọkụ |
iru mmiri |
|
Na-arụ ọrụ |
-35 ºC ~ +80 ºC |
0% ~ 95% |
|
Nchekwa |
-40 ºC ~ +85 ºC |
0% ~ 95% |
Tebụl 7| Ihe achọrọ gburugburu GPS
3.2.4GPS Antenna Parameter
Edepụtara nkọwapụta antenna na tebụl n'okpuru:
Nkọwapụta ihe PET
|
Oke nke nnabata ugboro ugboro |
1575.42±1.1 |
±2.5 |
|
Frequency Center (MHz) w/ 30mm2 GND ụgbọ elu |
1575.42 |
±3.0 |
|
Bandwit (MHz) (Nlaghachi azụ ≤ -10dB) |
≥10 |
±0.5 |
|
VSWR (na etiti Frequency) |
≤2.0 |
±0.5 |
|
Nweta (Zenith) (dBi Ụdị.) w/ 70mm2 GND ụgbọ elu |
4.5 |
±0.5 |
|
Oke Axial (dB) w/ 70mm2 GND ụgbọ elu |
3.0 |
±0.2 |
|
Mkpochapu |
okirikiri aka nri |
- |
|
Mgbochi (Ω) |
50 |
- |
|
Ọnụọgụ okpomọkụ ugboro ugboro (ppm/ºC) |
0±10 |
- |
Tebụl 8| Paramita Antenna GPS
AmpEdepụtara nkọwapụta nke lifier na tebụl n'okpuru:
Nkọwapụta ihe
|
Oke ugboro ugboro |
1575.42 MHz |
|
Nweta |
27 dB |
|
VSWR |
≤2.0V |
|
Ọnụ ego mkpọtụ |
D 2.0 dBm |
|
DC Voltage |
3 ~ 5V |
|
DC ugbu a |
5 ± 2 mA |
Tebụl 9| Ampnkọwa nkọwa
Edepụtara nkọwapụta arụmọrụ ule gburugburu ebe a:
|
Ihe |
Okpomọkụ nkịtị. |
Oke Temp.1 |
Obere okpomọkụ.2 |
|
AmpỊnweta liifier |
27dB ± 2.0 |
27dB ± 2.0 |
27dB ± 2.0 |
|
VSWR |
≤2.0 |
≤2.0 |
≤2.0 |
|
Ọnụ ego mkpọtụ |
≤2.0 |
≤2.0 |
≤2.0 |
1. Nnwale okpomọkụ dị elu: ncha na okpomọkụ (85º C) na iru mmiri (95%) ụlọ maka 24-awa ma laghachi na okpomọkụ nkịtị (opekata mpe maka awa 1) na-enweghị mgbanwe ọdịdị anya.
2. Nnwale okpomọkụ dị ala: ncha na okpomọkụ (-40º C) ụlọ maka 24-hour wee laghachi na
okpomọkụ nkịtị (opekata mpe maka awa 1) na-enweghị mgbanwe ọdịdị anya.
Tebụl 10| Arụmọrụ ule gburugburu
4. FCC ịkpachara anya
Akpachara anya FCC:
Mgbanwe ma ọ bụ mgbanwe ọ bụla nke ndị ọzọ na-akwadoghị nke ọma nnabata nwere ike mebie ikike onye ọrụ iji rụọ akụrụngwa.
Ngwaọrụ a na-akwado akụkụ 15 nke Iwu FCC. Ọrụ dị n'okpuru ọnọdụ abụọ ndị a: (1) Ngwaọrụ a nwere ike ọ gaghị ebute nnyonye anya na-emerụ ahụ, yana (2) ngwaọrụ a ga-anabatarịrị nnyonye anya ọ bụla enwetara, gụnyere nnyonye anya nwere ike bute ọrụ na-achọghị.
IHE dị mkpa:
Mara: A nwalere ngwa a wee hụ na ọ dabara na oke maka klaasị B ngwaọrụ dijitalụ, dịka akụkụ 15 nke Iwu FCC. Emebere oke ndị a iji nye nchebe ezi uche dị na ya megide nnyonye anya na-emerụ emerụ na ntinye ụlọ. Nke a akụrụngwa na-ewepụta, na-eji ma nwee ike ịgbasa ike ugboro redio yana, ọ bụrụ na etinyeghị ya ma jiri ya dịka ntuziaka ahụ siri dị, nwere ike bute nnyonye anya na-emerụ ahụ na redio. nkwukọrịta. Agbanyeghị, enweghị nkwa na nnyonye anya agaghị eme na a akpan akpan echichi. Ọ bụrụ na akụrụngwa a na - ebute nnyonye anya na redio ma ọ bụ nnabata telivishọn, enwere ike kpebisie ike site na ịgbanwuo ngwa ọrụ ma gbanye ya, onye ọrụ bụ agbam ume ka ị nwaa idozi nnyonye anya site na otu ma ọ bụ karịa n'ime usoro ndị a:
- Megharịa ma ọ bụ bugharịa antenna nnata.
- Mee ka nkewa dị n'etiti akụrụngwa na nnata.
- Jikọọ akụrụngwa n'ime oghere na sekit dị iche na nke ejikọrọ onye nnata.
- Kpọtụrụ onye na-ere ahịa ma ọ bụ onye ọrụ redio/TV nwere ahụmahụ maka enyemaka.
Nkwupụta Mkpughe FCC Radiation:
Akụrụngwa a na-akwado oke ikpughe radieshon FCC nke edobere maka ebe a na-achịkwaghị achịkwa.Ekwesịrị itinye akụrụngwa a ma rụọ ọrụ ya na anya kacha nta 20cm n'etiti radiator & ahụ gị.
5. ISEDC ịdọ aka ná ntị
ISEDC ịdọ aka ná ntị:
Ngwaọrụ a na-akwado Innovation, Science, and Economic Development Canada akwụkwọ ikike ewepụrụ ọkọlọtọ RSS. A na-arụ ọrụ n'okpuru ọnọdụ abụọ a:
RAK7248 ngwaọrụ a nwere ike ọ gaghị ebute nnyonye anya, yana (2) ngwaọrụ a ga-anabatarịrị nnyonye anya ọ bụla, gụnyere nnyonye anya nwere ike ịkpata arụ ọrụ ngwaọrụ na-achọghị.
Ngwa a na-agbaso ụkpụrụ nduzi mkpughe RF, ndị ọrụ nwere ike nweta Canada ozi gbasara mkpughe RF na nnabata. Opekempe anya site na ahụ maka iji ngwaọrụ bụ 20cm.
6. Akụkọ ngbanwe
|
Ụbọchị nkọwa ngbanwe |
|
1.0 Mwepụta izizi Ọgọst 13, 2020 1.1 Tinye ozi FCC/ISEDC Septemba 10, 2020 1.2 Gbanwee aha ngwaahịa Septemba 14, 2020 1.3 Tinye ozi Raspberry Pi Hardware Septemba 15, 2020 |
7. Nchịkọta akwụkwọ
|
Kwadoro site na nyocha nke: kwadoro ya: |
Banyere RAKwireless: RAKwireless bụ ọsụ ụzọ n'ịweta njikọta ekwentị dị iche iche na LoRaWAN ngwọta maka ma Edge na Gateway IoT ngwaọrụ. Anyị kwenyere na site na mfe iji na Modular designs anyị nwere ike mee ngwa ngwa ahịa maka ngwa IoT dị iche iche iji mee welie ntinye usoro n'ime ma ndị nrụpụta na ntọala azụmahịa.
Akwụkwọ / akụrụngwa
 |
Shenzhen Rakwireless Technology RAK7248 WisGate Raspberry Pi Gateway [pdf] Akwụkwọ ntuziaka onye ọrụ RAK7248, 2AF6B-RAK7248, 2AF6BRAK7248, RAK7248 WisGate Raspberry Pi Gateway, WisGate Raspberry Pi Gateway |
