glsorre/readme.md

## readme.md

      
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              readme.md
            
          
    Basic javascript thermostat to be used with nodered

Here's the output on the columns there are external temperatures. On the rows internal temperatures.
│       │  -2   │  -1   │   0   │   1   │   2   │   3   │   4   │   5   │   6   │   7   │   8   │   9   │  10   │  11   │  12   │  13   │  14   │  15   │  16   │  17   │
|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|-------|
│  15   │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │
│ 15.25 │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │
│ 15.5  │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │
│ 15.75 │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │
│  16   │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │
│ 16.25 │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │
│ 16.5  │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │
│ 16.75 │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │
│  17   │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │
│ 17.25 │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │ 'MIN' │
│ 17.5  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'BUF' │ 'BUF' │ 'BUF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │
│ 17.75 │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'BUF' │ 'BUF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │
│  18   │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'BUF' │ 'BUF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │
│ 18.25 │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'BUF' │ 'BUF' │ 'BUF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │
│ 18.5  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'BUF' │ 'BUF' │ 'BUF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │
│ 18.75 │ 'ON'  │ 'ON'  │ 'ON'  │ 'ON'  │ 'BUF' │ 'BUF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │
│  19   │ 'ON'  │ 'ON'  │ 'ON'  │ 'BUF' │ 'BUF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │
│ 19.25 │ 'BUF' │ 'BUF' │ 'BUF' │ 'BUF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │
│ 19.5  │ 'BUF' │ 'BUF' │ 'BUF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │
│ 19.75 │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │
│  20   │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │ 'OFF' │


## thermostat.js
// >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> THIS IS THE IMPORTANT PIECE >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
const targetTemperatureBuffer = .5
const minimalTargetTemperature = 17.5
const targetTemperature = 19
const externalCutOffTemperature = 16.5

const deltaTargetTemperature = (et, tt, co) => {
    if (et <= 0) {
        return tt
    } else if (et > 0 && et <= co) {
        return - .075 * et + tt
    } else {
        return -Infinity
    }
}
const deltaMinimalTargetTemperature = (et, tt, co) => {
    if (et <= 0) {
        return tt
    } else if (et > 0 && et <= co) {
        return - .0325 * et + tt
    } else {
        return -Infinity
    }
}

function heatThermostat(externalTemperature, internalTemperature, targetTemperature, minimalTargetTemperature, targetTemperatureBuffer, externalCutOffTemperature) {
    const optimalMinimalTemperatureTarget = deltaMinimalTargetTemperature(externalTemperature, minimalTargetTemperature, externalCutOffTemperature)
    const optimalTemperatureTarget = deltaTargetTemperature(externalTemperature, targetTemperature, externalCutOffTemperature)
    if (internalTemperature < optimalMinimalTemperatureTarget + targetTemperatureBuffer) {
        return internalTemperature <= optimalMinimalTemperatureTarget ? 'MIN' : 'MBF'
    }
    if (
        internalTemperature <= optimalTemperatureTarget + targetTemperatureBuffer
    ) {
        return internalTemperature <= optimalTemperatureTarget ? 'ON' : 'OBF'
    }
    return 'OFF'
}
// >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

const internalTemperaturesSequence = [ 15, 15.25, 15.5, 15.75, 16, 16.25, 16.5, 16.75, 17, 17.25, 17.5, 17.75, 18, 18.25, 18.5, 18.75, 19, 19.25, 19.5, 19.75, 20, 20.25, 20.5, 20.75, 21, 21.25, 21.5, 21.75, 22, 22.25, 22.5, 22.75, 23 ]
const externalTemperaturesSequence = [ -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 ]

const results = [ [ ...externalTemperaturesSequence ] ]

for (let i = 0; i < internalTemperaturesSequence.length; i++) {
    results[i + 1] = [ internalTemperaturesSequence[i] ]
}
results[0].unshift('+')

for (let i = 0; i < internalTemperaturesSequence.length; i++) {
    const internalTemperature = internalTemperaturesSequence[i]
	for (let j = 0; j < externalTemperaturesSequence.length; j++) {
		const externalTemperature = externalTemperaturesSequence[j]
		const result = heatThermostat(externalTemperature, internalTemperature, targetTemperature, minimalTargetTemperature, targetTemperatureBuffer, externalCutOffTemperature)
		results[i + 1][j + 1] = result
	}
}

console.table(results)
	// >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> THIS IS THE IMPORTANT PIECE >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
	const targetTemperatureBuffer = .5
	const minimalTargetTemperature = 17.5
	const targetTemperature = 19
	const externalCutOffTemperature = 16.5

	const deltaTargetTemperature = (et, tt, co) => {
	if (et <= 0) {
	return tt
	} else if (et > 0 && et <= co) {
	return - .075 * et + tt
	} else {
	return -Infinity
	}
	}
	const deltaMinimalTargetTemperature = (et, tt, co) => {
	if (et <= 0) {
	return tt
	} else if (et > 0 && et <= co) {
	return - .0325 * et + tt
	} else {
	return -Infinity
	}
	}

	function heatThermostat(externalTemperature, internalTemperature, targetTemperature, minimalTargetTemperature, targetTemperatureBuffer, externalCutOffTemperature) {
	const optimalMinimalTemperatureTarget = deltaMinimalTargetTemperature(externalTemperature, minimalTargetTemperature, externalCutOffTemperature)
	const optimalTemperatureTarget = deltaTargetTemperature(externalTemperature, targetTemperature, externalCutOffTemperature)
	if (internalTemperature < optimalMinimalTemperatureTarget + targetTemperatureBuffer) {
	return internalTemperature <= optimalMinimalTemperatureTarget ? 'MIN' : 'MBF'
	}
	if (
	internalTemperature <= optimalTemperatureTarget + targetTemperatureBuffer
	) {
	return internalTemperature <= optimalTemperatureTarget ? 'ON' : 'OBF'
	}
	return 'OFF'
	}
	// >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

	const internalTemperaturesSequence = [ 15, 15.25, 15.5, 15.75, 16, 16.25, 16.5, 16.75, 17, 17.25, 17.5, 17.75, 18, 18.25, 18.5, 18.75, 19, 19.25, 19.5, 19.75, 20, 20.25, 20.5, 20.75, 21, 21.25, 21.5, 21.75, 22, 22.25, 22.5, 22.75, 23 ]
	const externalTemperaturesSequence = [ -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 ]

	const results = [ [ ...externalTemperaturesSequence ] ]

	for (let i = 0; i < internalTemperaturesSequence.length; i++) {
	results[i + 1] = [ internalTemperaturesSequence[i] ]
	}
	results[0].unshift('+')

	for (let i = 0; i < internalTemperaturesSequence.length; i++) {
	const internalTemperature = internalTemperaturesSequence[i]
	for (let j = 0; j < externalTemperaturesSequence.length; j++) {
	const externalTemperature = externalTemperaturesSequence[j]
	const result = heatThermostat(externalTemperature, internalTemperature, targetTemperature, minimalTargetTemperature, targetTemperatureBuffer, externalCutOffTemperature)
	results[i + 1][j + 1] = result
	}
	}

	console.table(results)