Asram abien a atwam ni no, aguadidan akɛse a ɛwɔ mfinimfini-nkɔnsɔnkɔnsɔn bi a ɛwɔ Europa Kesee Fam no ka kyerɛɛ yɛn sɛ yɛmfa ɛlɛtrɔnik shelf label rollout bi mma sotɔɔ 22. Na wɔabɔ wɔn adetɔ kuw no dedaw sɛ wɔde nhyehyɛe ahorow abiɛsa - biako a ɛde Bluetooth LE di dwuma, biako wɔ Wi-Fi, ne biako wɔ 433 MHz radio a ɛyɛ wɔn dea so. Adetɔnfo biara kae sɛ wɔn de na eye sen biara. Obiara ankyerɛkyerɛ tebea horow a na enye koraa mu no mu. Saa nkɔmmɔbɔ no maa yegye dii sɛ yɛbɛkyerɛw saa asɛm yi.
Wireless protocol mmusua mmiɛnsa na ɛdi ESL dwumadie so seesei: Bluetooth Low Energy (BLE, titire ɛfiri 5.4 nkyerɛkyerɛmu), Wi-Fi, ne Sub-GHz radio (433 MHz wɔ Asia, 868 MHz wɔ Europa, 915 MHz wɔ Amerika Atifi fam). Protocol biara di ɔhaw ankasa ho dwuma. Wɔn mu biara de aguadi ahorow a adetɔnfo nhomawa ahorow no nni ho dwuma no ba. Nea yɛahu wɔ sotɔɔ ahorow ankasa mu ni.
Bluetooth LE: Open Standard, Ɛda so ara renyin wɔ Scale mu
Bluetooth wɔ aniberesɛm ahoɔden wɔ n’akyi. Bluetooth SIG tintim ESL Profile a wɔatu ho ama a wɔasi wɔ Bluetooth 5.4 PAwR (Periodic Advertising with Responses) feature - a ɛyɛ afiri a ɛma kwan ma beaeɛ baako bɔ ahyɛdeɛ kɔma label mpempem pii wɔ berɛ a wɔahyehyɛ mu, afei ɛgye mmuaeɛ a ɛnhyehyɛ ankorankoro nkitahodiɛ.
Silicon Labs sɔɔ eyi hwɛe wɔ 1,500-node network so wɔ wɔn lab mu. EM Microelectronic de em|bleu SoC no kɔmaa wɔ 1.8×1.8 mm pɛ a ɛwɔ 200 nA deep sleep current - ketewaa bi na ɛyɛ frugal a ɛbɛfata mu mpocompact 2.66-inch E-ink nkyerɛwde ahorow. Esiane sɛ wɔde Bluetooth mfiri bɛboro ɔpepepem 5 mena afe biara nti, nneɛma a wɔde yɛ adwuma no ho ka nya mfaso fi sikasɛm kɛse a wɔde di dwuma no mu.
Wɔ adetɔnfo fam no, mfaso a mfaso wɔ so ne adetɔnfo a wɔyɛ nsakrae. Gyinapɛn a wɔabue kyerɛ - anyɛ yiye koraa no wɔ nnyinasosɛm mu - sɛ wubetumi de akwan a wɔfa so kɔ hɔ a efi ɔdemafo biako hɔ ne nkyerɛwde a efi ɔdefo foforo hɔ afra. Ɛno yɛ twe a nteaseɛ wɔ mu firi vendor lock-in a ahaw ESL mfeɛ pii. Dae nsuo a ɛba fam 2 μA yɛ nea ɛtaa ba ma BLE ESL chipsets, na Bluetooth 5.4 spec no boa bɛyɛ 32,600 labels wɔ access point network biara so wɔ krataa so.
Nea wɔkyere: "wɔ krataa so" no ho hia wɔ ha. Nneɛma akɛseɛ-a wɔde di dwuma wɔ BLE so no da so ara yɛ mmeranteɛ koraa sɛ wɔde toto nhyehyɛeɛ a ɛyɛ wɔn dea a ayɛ adwuma mfeɛ du ho a. Rigado, IoT gateway vendor a ɔyɛ nnam wɔ ESL mu, de ankorankoro gateway ka to $1,000 kosi $2,000 a wɔde ahyɛ mu - na ebia aguadidan kɛse bi behia du anaa nea ɛboro saa. BLE yɛ adwuma wɔ 2.4 GHz, ne Wi-Fi routers, adetɔfoɔ fon, microwaves, ne wireless mfiri foforɔ biara a ɛwɔ ɔdan no mu kyɛ spectrum. Wɔ sotɔɔ a adagyew nnim mu no, saa akwanhyia no betumi atwe nneɛma bo a wɔyɛ no foforo wɔ nnɔnhwerew a nnipa pii kɔ mu no akyɛ.
Nea ɛfata yiye: nnurutɔnbea, aguadidan ahorow, ne sotɔɔ ahorow a ɛwɔ mfinimfini-a ɛwɔ m2 2,000 ase - titiriw wɔn a wɔde BLE beacons di dwuma dedaw ma agyapade akyi di. Adetɔnfo a wɔhwehwɛ nneɛma mu5.8-inch BLE-a ɛtumi yɛ shelf labelssaa update a efi tablet a enni infrastructure a emu yɛ duru so no behu sɛ saa protocol yi yɛ anigye.
Wi-Fi: Fa Wo Netwɛk a Ɛwɔ Hɔ Dedaw no Di Dwuma - Nanso Budget for Batteries
Pitch no yɛ tẽẽ: wo store no de enterprise Wi-Fi di dwuma dedaw wɔ aisle biara mu, enti twa apon foforo no so na fa wo ESL ahorow no bata network a ɛwɔ hɔ dedaw no ho tẽẽ. Wɔ nnwuma akɛse nkɔnsɔnkɔnsɔn a wɔde sika kɛse ahyɛ aguadi mu kwan a wɔfa so kɔ mmeae a wɔakata so koraa dedaw fam no, nkabom akontaabu no hwɛ sɛ ɛyɛ anigye.
Wi-Fi nso de data a ɛkɔ soro sen BLE anaa Sub-GHz ma. Saa mfaso no bɛyɛ nea wotumi hu bere a worepia mfonini a ɛyɛ fɛ - afiri mfonini, nsɛm a wɔde hyɛ nkurɔfo nkuran - akɔLCD-gyina dijitaal bo screens sommom sen E-ink tags a ɛnyɛ den. BILCD screen a ne kɛse yɛ nsateakwaa 15.6nkɔsoɔ a ɛretu mmirika wɔ endcap so no hia bandwidth a E-ink boɔ tags nhia.
Ɔhaw no da adi wɔ mmeae abien. Nea edi kan no, anyinam ahoɔden a wɔde di dwuma. Wi-Fi twetwe mprempren kɛse sen BLE anaa Sub-GHz wɔ nkrasɛm kyinhyia biara mu. E-ink label a ɛwɔ Sub-GHz radio so no betumi ayɛ adwuma mfe anum kosi awotwe wɔ coin cell a ɛwɔ update biako kosi abiɛsa da biara da. Label koro no ara wɔ Wi-Fi so? Asram dumien kosi dunwɔtwe. Wɔ scale - labels mpempem pii wɔ stores pii so - ɛno kyerɛ sɛ battery sesa nhyehyɛe a ɛsan ba bio a wo adwumayɛ kuw no wɔ sɛ wɔde yɛ nneɛma. Nea ɛto so abien, network a ɛyɛ kyenkyenenn. Wi-Fi ESLs ne POS terminals, adetɔfoɔ mfiri, nsa scanners, ne self-checkout kiosks si akan wɔ airtime ho. Wɔ Kwasida awia a ɛkɔ soro sen biara no, saa akansi no nyɛ nsusuwii hunu.
Nea ɛfata yiye: adwumayɛbea adetɔnfo a wɔwɔ Wi-Fi nhyehyɛe a ɛho akokwaw, a wɔayɛ no yiye, sotɔɔ ahorow a wɔde LCD dijitaal nsɛnkyerɛnne a ahoɔden wom di dwuma (baabi a batere nkwa nna ho nhia efisɛ wɔde screen ahorow no ahyɛ mu), ne nneɛma a wɔde di dwuma a wɔsusuw wɔ ɔhaha pii mu sen sɛ wɔde nkyerɛwde mpempem pii susuw.
Sub-GHz (433/868/915 MHz): Glamour biara nni hɔ, Ɔkwan tenten, Batere tenten
Sub-GHz radio nni aguadi kuw a ɛhyɛ ho nkuran sɛnea Bluetooth SIG di BLE ho nkuran no. Sub-GHz ESL nhyehyɛe dodow no ara yɛ proprietary protocols pɔtee ma label yɛfo no. Nkitahodi ho nsɛm biara nni hɔ. Adetɔnfo a wobɛsesa no kyerɛ sɛ wobɛsesa nkitahodi stack no nyinaa.
Na nanso, wɔ sotɔɔ ahorow bi mu no, abɔde mu nneɛma ho nimdeɛ ma ɛyɛ nea mfaso wɔ so sen biara. Frequency a ɛba fam no ma asorɔkye tenten a ɛware. Asorɔkye tenten hyɛn dade shelving, kɔnkrit afasu a wɔde kyekyɛ nneɛma mu, ne frigye mu nneɛma a wɔde kyerɛ nneɛma mu yiye koraa sen 2.4 GHz nsɛnkyerɛnne. Display Data, UK-based ESL provider, kyekyee wɔn platform nyinaa twaa Sub-1 GHz ho hyiae esiane eyi nti pɛpɛɛpɛ - maximum range ne signal penetration wɔ retail mmeae a ɛyɛ den. Sub-GHz kwan baako kata anammɔn kɛseɛ a ɛyɛ kɛseɛ sene ne BLE anaa Wi-Fi a ɛne no sɛ. Nneɛma kakraa bi a wɔde kɔ hɔ no kyerɛ sɛ ɛho ka bɛba wɔ infrastructure ho na wɔayɛ network nhyehyɛe a ɛnyɛ den.
Batere nkwa nna ne ade foforo a ɛho hia kɛse. Silicon Labs ESL nhyehyeɛ akwankyerɛ kyerɛ sɛ sɛ wobɛduru mfeɛ anum kɔsi du wɔ CR2032 sika cell so a, ɛhia sɛ wɔkyekyɛ mu a, mprempren sikasɛm nhyehyɛeɛ a ɛba fam 10 μA - wɔn Sub-GHz FG22 SoC no nya 0.17 μA wɔ nna a emu yɛ den mu. Maakɛse-format E-ink nkyerɛwdewɔ adekoradan anaa hypermarket mmeae a wɔyɛ foforo biako kosi abiɛsa da biara no, Sub-GHz de adwumayɛ nkwa nna a ɛware sen biara ma bere nyinaa.
Nea ɛfata yiye: hypermarkets ne akɛse-adaka aguadifo a ɛboro 5,000 m2, adekoradan ne nneɛma a wɔde kɔ baabiara a dade a wɔde hyɛ mu, nkɔnsɔnkɔnsɔn a ɛyɛ nwini ne mmeae a frigye wɔ, ne baabiara a wɔde bedi dwuma a infrastructure a wɔbɛma ayɛ ketewaa ne battery nkwa a wɔbɛma ayɛ kɛse no di kan sen bandwidth. Yɛn afɛfoɔ a wɔrebɔ E-ink shelf labels wɔ-format stores akɛseɛ so no twetwe kɔ Sub-GHz so daa.
Side-by-Afã Ntotoho
| Metric | Bluetooth LE 5.4 | Wi-Fi | Sub-GHz (433/868/915 MHz) na ɛwɔ hɔ. |
|---|---|---|---|
| Effective Wɔ-Store Range mu | 10–30 m | 15–35 m | 50–200 m |
| Battery Nkwa (E-ink, 1–3 foforo/da) | Mfeɛ 3–5 | Mfeɛ 1–2 | mfeɛ 5–10 |
| Data a Wɔde Di Dwuma | Kakra | Soro | Fam |
| Labels wɔ Access Point biara mu | ~32,000 (spec) / ɔhaha pii a wɔtaa yɛ | Ɛsono sɛnea AP tumi te | Mpempem pii wɔ apon biara mu |
| Gateway Cost (wɔde ahyɛ mu) . | $1,000–$2,000 | Ɔde network a ɛwɔ hɔ dedaw di dwuma | $500–$1,500 |
| 2.4 GHz Ntwitwiridii | Aane | Aane | - kuw biara nni hɔ a ɛtetew mu |
| Bue Standard no mu | Yiw (BLE ESL Nsɛm a Wɔakyerɛw) | Yiw (802.11) . | Dodow no ara yɛ nea ɛyɛ wɔn dea |
| Store Format a Ɛyɛ Paara | Nketewa–mfinimfini aguadidan, nnurutɔnbea ahorow | Enterprise a ɛwɔ IT a ɛyɛ den | Hypermarkets, adekoradan ahorow |
Protocol Choice Ripples Fa Wo Store Nyinaa Mu
Biribi a protocol ntotoho nsɛm no hwere bere nyinaa: wo ESL wireless network no nyɛ adwuma wɔ baabi a ɛyɛ soronko. Nneɛma a wɔde kɔ hɔ, boɔ a wɔbɔ akyi, dwumadie softwea - ne nyinaa ka digyital nhyehyɛeɛ foforɔ a ɛwɔ sotɔɔ no mu. Sɛ woretu mmirika aankasa-som touchscreen kioskssɛ wopɛ sɛ wohwɛ a, saa kiosk ahorow no twe bo a wɔbɔ fi database koro no ara mu. Sɛ shelf-edge LCD bar displays run promotions wɔ aisle a, content engine a ɛma saa screens no nso betumi akanyan ɔsatu wɔ wo E-ink labels - nanso sɛ systems no kyɛ API layer a ɛyɛ biako nkutoo a.
Yɛahu nea ɛho tew sen biara bere a afɛfo yɛ nhyehyɛe de wɔn ESL di dwuma wɔ wɔn kiosk ne dijitaal nsɛnkyerɛnne a wɔde bɛba no nkyɛn, ɛnyɛ sɛ IT adwuma abiɛsa a ɛsono emu biara. Sɛ bo a adetɔfoɔ bi hu wɔ shelf tag, endcap LCD screen, ne self-checkout terminal no nyinaa fi fibea baako so a, boɔ ho anwiinwii - akasakasa kɛseɛ baako a ɛwɔ grocery - kɔ fam bɛn zero.
Nsɛmmisa Abiɛsa Ansa na Wode Wo Ho Ahyɛ
Wo fam nhyehyɛe no te dɛn?Nnurutɔnbea a ne kɛse yɛ m2 400 ne aguadidan kɛse a ne kɛse yɛ m2 12,000 yɛ radio mmeae ahorow. BLE di nea edi kan no ho dwuma denam mmeae abien anaa abiɛsa a wɔde kɔ hɔ so. Ebia nea ɛto so abien no hia Sub-GHz na wɔakwati sɛ wɔde apon bɛgu ɔdan no atifi.
Nsɛm bɛn na woreda no adi?Static bo a ɛwɔ E-ink so? Protocol biara di saa asɛm no ho dwuma. Video a wɔde hyɛ nkurɔfo nkuran wɔ LCD screen ahorow a ahoɔden wom so? Wo hia Wi-Fi no throughput. Flash bo a ɛsakra mpɛn pii dɔnhwerew biara? Si so dua sɛ wo protocol no betumi akura update volume no mu a ɛrensɛe battery ntɛm.
Dɛn bio na ɛkyɛ wo mframa asorɔkye no?Sotɔɔ a ayɛ ma dedaw wɔ 2.4 GHz - adetɔfo Wi-Fi, IoT sensor, nsa scanner - bɛpere ne 2.4 GHz nhyehyɛe foforo a wɔde ahyɛ so. Sub-GHz yɛ adwuma wɔ band a nnipa pii nni mu mu koraa.
Protocol biako biara nni hɔ a eye sen biara wɔ amansan nyinaa mu. Sɛ wo ESL supplier no de wireless option baako pɛ ma na ontumi nkyerɛkyerɛ baabi a ɛtɔ sin mu a, ɛno ka biribi kyerɛ wo. Sɛ wopɛ sɛ wosɔ label ahorow hwɛ wɔ protocol ahorow nyinaa so wɔ wo sotɔɔ ankasa mu ansa na woahyɛ bɔ wɔ scale so a, .bisa nhwehwɛmu nhwɛsode ahorow- adapɛn abien wɔ live aisle biako mu da pii adi sen spec krataa anaa vendor slide deck biara.
