From a single chip
to an acceptance-ready safety system
What Hisolarmate does is own the whole chain — protocol, chip, module, terminal, platform. Not for the sake of it: for module-level shutdown, no off-the-shelf chain simultaneously satisfies low power, long life, offline autonomy and supply-chain independence.
Why we build our own radio protocol
LoRa, NB-IoT and PLC are all good technologies, but none was designed for a device that sits on a roof, must survive 25 years, and runs on faint harvesting or a small cell. Forcing them into this role breaks at least one of life, power or cost.
LDSW · low-duty-cycle wireless access
- In-house SOC integrating the LDSW IoT protocol over 2.4 GHz narrowband
- Low duty cycle keeps terminals in deep sleep most of the time — standby current < 10µA
- Published as China communications standard YD/T 6334-2025
- Fully domestic from protocol to chip to module to terminal — no imported silicon or proprietary foreign protocol
The specific problems it solves
- Life: low duty cycle plus ultra-low standby carries the terminal to a 25-year design life
- Coverage: narrowband self-organising mesh delivers 300m+ on complex sites, past roof obstructions
- Concurrency: ≥512 nodes per gateway — no gateway stacking per megawatt
- Autonomy: terminals keep protecting on local policy when offline; safety never depends on the cloud
TinyML — putting judgement inside the terminal
The failure mode PV safety fears most is when a shutdown is needed, the network happens to be gone too. Putting protection logic in the cloud hands the last line of defence to the least reliable link.
Offline autonomy
The TinyML model is embedded in the terminal MCU; it identifies anomalies and completes shutdown without connectivity.
Shutdown on power loss
When supply disappears the default state is open — fail-safe rather than fail-dangerous.
Local criteria
Voltage anomaly, thermal rise and arc signature are judged on-device; raw data upload is not required to decide.
Patented
"TinyML-based intelligent control method for PV modules", ZL 2025 1 0001839.5, granted 10 Feb 2026.
We don't just comply with standards — we co-write them
Whether a technology is genuinely accepted by an industry shows in whether it enters the standard text. On this line Hisolarmate is both a co-drafting member and a patent holder.
| Category | Name / reference | Status |
|---|---|---|
| National communications standard | YD/T 6334-2025 (LDSW low-duty-cycle wireless access) | Published |
| Association standard · co-drafter | T/SESETA 000007—2026, Technical specification for distributed PV rapid shutdown systems | Co-drafting member; founder listed among principal drafters |
| Invention patent | ZL 2025 1 0001839.5 — TinyML-based intelligent control method for PV modules | Granted 10 Feb 2026 |
| Invention patent | String-level machine-learning monitoring terminal and dynamic optimisation method | Substantive examination |
| Invention patent | PV module intelligent O&M system | Substantive examination |
| Utility model | Intelligent PV system and PV device (bypass topology) | Accepted |
| Invention patent | Intelligent PV system and PV device (same family) | Substantive examination |
| Enterprise recognition | Zhejiang Province technology-based SME (provincial register) | Dec 2025 |
T/SESETA 000007—2026 is administered by the Shanghai Energy-Saving Engineering Technology Association, edited by Shanghai University of Electric Power and Wuxi Qingda Integrated Technology, and co-drafted by Shanghai Jiao Tong University, GoodWe, APSystems and Ningbo Hisolarmate.
41 underlying communication patents — four are core
The foundational patents in the LDSW lineage are licensed from Xigu Shuguang and form the shared technical ground under the device, gateway and platform.
| Patent | Title | What it underpins |
|---|---|---|
| CN108566687A | LDSW ultra-low-power wireless self-organising network system and communication method | Core communication patent for the shutdown device |
| CN102081743B | Active electronic label and its application system and method | Lineage and provenance of LDSW technology |
| CN112074007B | Wireless communication system and method for intermittently operating IoT terminals | Enables 25-year life and ultra-low standby power |
| CN108632320B | IoT information service system, method, apparatus and terminal | Underpins the safety cloud platform and VPP extension |
Key differences — and what each one costs
The comparison is not to disparage peers, but so that selection knows what we gave up behind each advantage.
| Dimension | HiSRSD V2 | Module optimiser / smart module | Microinverter | Conventional RSD |
|---|---|---|---|---|
| Array-external voltage after shutdown | ≤ 1 V | ~20 V | Low-voltage AC during operation | ≤ 80 V (NEC floor) |
| Shutdown response | ≤ 25 s | 10 – 25 s | Architecture dependent, no standalone shutdown | ≤ 30 s |
| Communication | LDSW wireless (YD/T 6334-2025) | PLC powerline (proprietary) | PLC / RF | PLC / RS485 |
| Offline autonomy | TinyML edge intelligence | Gateway / cloud dependent, degrades offline | Local link dependent | Gateway dependent |
| Module-level data | Full voltage / temperature / yield | Optimisation + sensing (closed protocol) | Yield only | Limited / none |
| Supply chain | Fully domestic SOC | Partly domestic | Partly import dependent | Mixed |
| Retrofit intrusion | Wireless, no outage required | Cabling work needed | Inverter replacement | Cabling work needed |
| Number of terminations | ~50% fewer | Standard | Highest | Standard |
| Terminal cost per watt | 0.05 – 0.08 CNY / W | High | Highest | Medium |
Competitor figures are drawn from public sources, vendor documentation and third-party test reports (including TÜV shutdown testing and NEC 690.12 clauses). For selection reference only; latest vendor disclosures prevail.
A company founded in 2024 that runs at 70% R&D
~70%
R&D share of headcount; core members span silicon, power electronics and new-energy safety.
41
Licensed underlying communication patents, plus an in-house pipeline of filings and pending applications.
3000+
Module-level terminals delivered to date, now in long-term operation on live plants.
Provincial register
Listed as a Zhejiang technology-based SME in Dec 2025, with the technology route recognised by an official evaluation framework.
Want protocol detail, a chip block diagram or measured curves? Let's set up a technical session
Whitepapers, measured data, samples and joint validation are available. Core SOC design and protocol stack can be discussed under NDA.