@signalk/n2k-signalk/dist/maretron/power.js

NMEA 2000 to SignalK conversion library

"use strict";
const { get } = require('lodash');
module.exports = function (type, phase) {
    function prefix(n2k, state) {
        return `electrical.${type}.${state.deviceInstance || 0}.${phase}`;
    }
    return [
        {
            source: 'realPower',
            node: function (n2k, state) {
                return `${prefix(n2k, state)}.realPower`;
            },
            filter: (n2k, state) => {
                return state.deviceInstance != null;
            }
        },
        {
            node: function (n2k, state) {
                return `${prefix(n2k, state)}.apparentPower`;
            },
            value: (n2k, state) => {
                const pf = get(state, `maretron.${prefix(n2k, state)}.powerFactor`);
                return n2k.fields.apparentPower * pf;
            },
            filter: (n2k, state) => {
                return n2k.fields.apparentPower != null &&
                    get(state, `maretron.${prefix(n2k, state)}.powerFactor`) != null &&
                    state.deviceInstance != null;
            }
        }
    ];
};
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