135 lines
2.6 KiB
Markdown
135 lines
2.6 KiB
Markdown
---
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title: 'Node-RED: вентиляция по CO₂'
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tags:
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- family
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- home
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- automation
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- nodered
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- ventilation
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updated: '2026-05-17'
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---
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Node-RED flow для управления вентиляцией по данным CO₂ датчиков.
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## Структура
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```
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[room demand msgs]
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↓
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(1) Demand Aggregator
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↓
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(2) Intake Allocation
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↓
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(3) Discretization per damper
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↓
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(4) Intake Damper Outputs
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↓
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(5) Exhaust Arbitration
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↓
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(6) Exhaust Dampers
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↓
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(7) Exhaust Fans
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↓
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(8) Kitchen Hood
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```
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## 1. Demand Aggregator (stateful)
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```js
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let demands = flow.get("room_demands") || {};
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demands[msg.room] = msg.raw_demand;
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flow.set("room_demands", demands);
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msg.demands = demands;
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return msg;
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```
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## 2. Intake Allocation
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Комнаты с intake дамперами: bedroom, kids, living. Приоритеты: living = 1.2, остальные = 1.0.
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```js
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const ROOMS = ["bedroom", "kids", "living"];
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const PRIORITY = { bedroom: 1.0, kids: 1.0, living: 1.2 };
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let weighted = {}, sum = 0;
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for (let r of ROOMS) {
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let d = msg.demands[r] || 0;
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weighted[r] = d * (PRIORITY[r] || 1);
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sum += weighted[r];
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}
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if (sum === 0) return null;
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let allocation = {};
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for (let r of ROOMS) { allocation[r] = 100 * weighted[r] / sum; }
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msg.intake_pct = allocation;
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return msg;
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```
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## 3. Discretization
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**Bedroom/Kids** (0 / 33 / 66 / 100):
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```js
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function snap(x) {
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if (x < 10) return 0;
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if (x < 33) return 33;
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if (x < 66) return 66;
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return 100;
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}
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msg.payload = snap(msg.payload);
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return msg;
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```
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**Living (dual-damper)**:
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```js
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let p = msg.payload;
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let A = 0, B = 0;
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if (p < 10) { A=0; B=0; }
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else if (p < 30) { A=66; B=0; }
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else if (p < 55) { A=66; B=66; }
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else if (p < 80) { A=100; B=66; }
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else { A=100; B=100; }
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msg.damperA = A; msg.damperB = B;
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return msg;
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```
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## 5. Exhaust Arbitration
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```js
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let d = msg.demands;
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msg.exhaust = {
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at2_1: Math.max(d.toilet || 0, d.shower || 0, d.kitchen || 0),
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at2_2: Math.max(d.bathroom || 0, d.office || 0)
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};
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return msg;
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```
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## 7. Fan Speed
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```js
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function speed(d) {
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if (d < 5) return 30;
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if (d < 20) return 50;
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if (d < 40) return 70;
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return 100;
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}
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msg.payload = speed(msg.payload);
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return msg;
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```
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## 8. Kitchen Hood (3-speed)
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```js
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let d = msg.demands.kitchen || 0;
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if (d < 10) msg.payload = 0;
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else if (d < 30) msg.payload = 1;
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else if (d < 60) msg.payload = 2;
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else msg.payload = 3;
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return msg;
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```
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Gate: current_state (manual override → block automation).
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Все дамперы: rate-limit 1 msg / 30–60 s.
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## Связанные заметки
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- [[family/how-to/home-automation]] — общая автоматизация дома
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