node-red-contrib-ibeacon-kalman/ibeacon-kalman.html

Kalman filter for iBeacon RSSI distance estimation

<script type="text/html" data-template-name="ibeacon-kalman">
  <div class="form-row">
    <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
    <input type="text" id="node-input-name" placeholder="Name">
  </div>
  <div class="form-row">
    <label for="node-input-txPower"><i class="fa fa-signal"></i> Default TX Power (dBm at 1m)</label>
    <input type="number" id="node-input-txPower" placeholder="-59">
  </div>
  <div class="form-row">
    <label for="node-input-nValue"><i class="fa fa-project-diagram"></i> Default Path Loss Exponent (n)</label>
    <input type="number" id="node-input-nValue" step="0.1" placeholder="2.0" min="1.0" max="5.0">
  </div>
  <div class="form-row">
    <label for="node-input-processNoise"><i class="fa fa-random"></i> Process Noise</label>
    <input type="number" id="node-input-processNoise" step="0.01" placeholder="0.1">
  </div>
  <div class="form-row">
    <label for="node-input-measurementNoise"><i class="fa fa-bell"></i> Measurement Noise</label>
    <input type="number" id="node-input-measurementNoise" step="0.1" placeholder="1.0">
  </div>
</script>

<script type="text/javascript">
  RED.nodes.registerType('ibeacon-kalman', {
    category: 'filter',
    color: '#a6bbcf',
    defaults: {
      name: { value: '' },
      txPower: { value: -59, validate: RED.validators.number() },
      nValue: { value: 2.0, validate: function(v) {
          return !isNaN(v) && v >= 1.0 && v <= 5.0;
      }},
      processNoise: { value: 0.1, validate: RED.validators.number() },
      measurementNoise: { value: 1.0, validate: RED.validators.number() }
    },
    inputs: 1,
    outputs: 1,
    icon: 'arrow-in.png',
    label: function() {
      return this.name || 'iBeacon Kalman';
    },
    oneditprepare: function() {
      $("#node-input-txPower").val(this.txPower);
      $("#node-input-nValue").val(this.nValue);
      $("#node-input-processNoise").val(this.processNoise);
      $("#node-input-measurementNoise").val(this.measurementNoise);
    }
  });
  <script type="text/html" data-help-name="ibeacon-kalman">
  <p>Kalman filter for iBeacon RSSI distance estimation.</p>
  <h3>Inputs</h3>
  <dl class="message-properties">
    <dt>payload <span class="property-type">number</span></dt>
    <dd>
  "payload": -65,
  "txPower": -58,
  "nValue": 3.0,
  "topic": "beacon/kitchen"

```javascript
// Пример динамического изменения
msg.txPower = -62; // Для конкретного маяка
msg.nValue = 2.3;  // Для среды с препятствиями
```


</dd>
  </dl>
  <h3>Outputs</h3>
  <dl class="message-properties">
    <dt>payload <span class="property-type">object</span></dt>
    <dd>{ rssi: number, rawDistance: number, filteredDistance: number }</dd>
  </dl>
  <h3>Details</h3>
  <p>Implements a Kalman filter to smooth iBeacon distance estimates.</p>
</script>
</script>