added safeguarding when vol gets too low for machines,

src/nodeClass.js

@@ -204,6 +204,14 @@ class nodeClass {
           const childObj = this.RED.nodes.getNode(childId); 
           this.source.childRegistrationUtils.registerChild(childObj.source ,msg.positionVsParent);
           break;
+        case 'calibratePredictedVolume':
+          const calibratedVolume = this.source.measurements
+            .type('volume')
+            .variant('measured')
+            .position('atequipment')
+            .getCurrentValue('m3');
+          this.source.calibratePredictedVolume(calibratedVolume);
+          break;
       }
       done();
     });

src/specificClass.js

@@ -18,7 +18,7 @@ class PumpingStation {
     this.childRegistrationUtils = new childRegistrationUtils(this);
     this.machines       = {};
     this.stations       = {};
-    
+    this.machineGroups  = {};
 
     //variants in determining what gets priority
     this.flowVariants = ['measured', 'predicted'];
@@ -51,15 +51,36 @@ class PumpingStation {
       return;
     }
 
+    //for machines register them for control
+    if(softwareType === 'machine'){
+      const childId = child.config.general.id;
+      this.machines[childId] = child;
+      this.logger.debug(`Registered machine child "${child.config.general.name}" with id "${childId}"`);
+    }
+
+    // for pumping stations register them for control
+    if(softwareType === 'pumpingStation'){
+      const childId = child.config.general.id;
+      this.stations[childId] = child;
+      this.logger.debug(`Registered pumping station child "${child.config.general.name}" with id "${childId}"`);
+    }
+
+    // for machine group controllers register them for control
+    if(softwareType === 'machineGroupController'){
+      const childId = child.config.general.id;
+      this.machineGroups[childId] = child;
+      this.logger.debug(`Registered machine group controller child "${child.config.general.name}" with id "${childId}"`);
+    }
+
+    //for all childs that can provide predicted flow data
     if (softwareType === 'machine' || softwareType === 'pumpingStation' || softwareType === 'machineGroupController') {
       this._registerPredictedFlowChild(child);
-      return;
     }
 
     this.logger.warn(`Unsupported child software type: ${softwareType}`);
   }
 
-  _safeGuardSystem(snapshot,remainingTime){
+  _safeGuardSystem(snapshot,remainingTime,direction){
     let vol = null;
 
     for (const variant of this.volVariants){
@@ -67,17 +88,89 @@ class PumpingStation {
       //go through with variants until we find one that exists
       if (!volsnap.samples.exists){ continue};
 
-      const vol = volsnap.samples.current?.value ?? null;
+      vol = volsnap.samples.current?.value ?? null;
     } 
 
     if(vol == null){
-      //if we cant get a volume, we must force whole system off.
+      //if we cant get a volume we cant control blind turn all pumps off.
+      Object.entries(this.machines).forEach(([machineId, machine]) => {
+        machine.handleInput('parent', 'execSequence', 'shutdown');
+      });
+      this.logger.warn('No volume data available to safe guard system; shutting down all machines.');
+      return;
+    }
 
+    //get threshholds from config
+    const timeThreshhold = this.config.control.timeThreshholdSeconds; //seconds
+    const triggerHighVol = this.basin.maxVolOverflow * ( this.config.control.thresholdHighVolume/100 );
+    const triggerLowVol = this.basin.minVolOut * ( this.config.control.thresholdLowVolume/100);
+
+    // trigger conditions for draining
+    if(direction == "draining"){
+     this.logger.debug(
+      `Safe-guard (draining): vol=${vol != null ? vol.toFixed(2) + ' m3' : 'N/A'}; ` +
+      `remainingTime=${Number.isFinite(remainingTime) ? remainingTime.toFixed(1) + ' s' : 'N/A'}; ` +
+      `direction=${String(direction)}; triggerLowVol=${Number.isFinite(triggerLowVol) ? triggerLowVol.toFixed(2) + ' m3' : 'N/A'}`
+     );
+
+      if( (remainingTime < timeThreshhold && remainingTime !== null) || vol < triggerLowVol || vol == null){
+        //shut down all downstream or atequipment machines,pumping stations and machine groups
+        Object.entries(this.machines).forEach(([machineId, machine]) => {
+          machine.handleInput('parent', 'execSequence', 'shutdown');
+          this.logger.warn(`Safe guard triggered: vol=${vol.toFixed(2)} m3, remainingTime=${remainingTime ? remainingTime.toFixed(1) : 'N/A'} s; shutting down machine "${machineId}"`);
+        });
+        Object.entries(this.stations).forEach(([stationId, station]) => {
+          station.handleInput('parent', 'execSequence', 'shutdown');
+          this.logger.warn(`Safe guard triggered: vol=${vol.toFixed(2)} m3, remainingTime=${remainingTime ? remainingTime.toFixed(1) : 'N/A'} s; shutting down station "${stationId}"`);
+        });
+        Object.entries(this.machineGroups).forEach(([groupId, group]) => {
+          group.handleInput('parent', 'execSequence', 'shutdown');
+          this.logger.warn(`Safe guard triggered: vol=${vol.toFixed(2)} m3, remainingTime=${remainingTime ? remainingTime.toFixed(1) : 'N/A'} s; shutting down machine group "${groupId}"`);
+        });
+      }
+    }
+
+    // trigger conditions for filling
+    if(direction == "filling"){
+      
+    }
+  }
+
+  //calibrate the predicted volume to a known value
+  calibratePredictedVolume(calibratedVol, timestamp = Date.now()){
+
+    const volumeChain = this.measurements
+        .type('volume')
+        .variant('predicted')
+        .position('atequipment');
+
+      //if we have existing values clear them out
+      const volumeMeasurement = volumeChain.exists() ? volumeChain.get() : null;
+      if (volumeMeasurement) {
+        volumeMeasurement.values = [];
+        volumeMeasurement.timestamps = [];
+      }
+
+      volumeChain.value(calibratedVol, timestamp, 'm3').unit('m3');
+
+      const levelChain = this.measurements
+        .type('level')
+        .variant('predicted')
+        .position('atequipment');
+
+      const levelMeasurement = levelChain.exists() ? levelChain.get() : null;
+      if (levelMeasurement) {
+        levelMeasurement.values = [];
+        levelMeasurement.timestamps = [];
+      }
+
+      levelChain.value(this._calcLevelFromVolume(calibratedVol), timestamp, 'm');
+
+      this._predictedFlowState = {
+        inflow: 0,
+        outflow: 0,
+        lastTimestamp: timestamp
       };
-/*
-    if(remainingTime < timeThreshhold || vol > maxVolume || vol < minVolume){}
-    */
-
   }
 
   tick() {
@@ -89,7 +182,7 @@ class PumpingStation {
     const netFlow = this._selectBestNetFlow(snapshot);
     const remaining = this._computeRemainingTime(snapshot, netFlow);
 
-    this._safeGuardSystem(snapshot,remaining.seconds);
+    this._safeGuardSystem(snapshot,remaining.seconds,netFlow.direction);
 
     this.state = {
       direction: netFlow.direction,
@@ -151,9 +244,7 @@ class PumpingStation {
       const timestamp = eventData.timestamp ?? Date.now();
       const unit = eventData.unit ?? 'm3/s';
 
-      this.logger.debug(
-        `Predicted flow update from ${childName} (${childId}, ${posKey}) -> ${value} ${unit}`
-      );
+      this.logger.debug(`Predicted flow update from ${childName} (${childId}, ${posKey}) -> ${value} ${unit}`);
 
       this.predictedFlowChildren.get(childId)[posKey] = value;
       this._refreshAggregatedPredictedFlow(posKey, timestamp, unit);
@@ -201,6 +292,7 @@ class PumpingStation {
   _onLevelMeasurement(position, value, context = {}) {
     const levelSeries = this.measurements.type('level').variant('measured').position(position);
     const levelMeters = levelSeries.getCurrentValue('m');
+
     if (levelMeters == null) return;
 
     const volume = this._calcVolumeFromLevel(levelMeters);
@@ -598,7 +690,7 @@ module.exports = PumpingStation;
 /* ------------------------------------------------------------------------- */
 /* Example usage                                                             */
 /* ------------------------------------------------------------------------- */
-/*
+
 if (require.main === module) {
   const Measurement = require('../../measurement/src/specificClass');
   const RotatingMachine = require('../../rotatingMachine/src/specificClass');