[2026-05-17] sort: move songs/poems/toasts to separate files per item, clean songs.md

family/how-to/nodered-ventilation.md

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