package com.flightfeather.monitor.analysis.dust.exception
|
|
import com.flightfeather.monitor.domain.ds1.entity.DustExceptionSetting
|
import com.flightfeather.monitor.domain.ds1.entity.DustSiteData
|
import com.flightfeather.monitor.enumration.dust.ExceptionType
|
import kotlin.math.abs
|
|
/**
|
* 滑动平均值突变异常
|
*/
|
class ExceptionSlideAverage(config: DustExceptionSetting) : BaseDustExceptionAnalysis(config) {
|
|
private val historyDataList = mutableListOf<DustSiteData>()
|
private val tempDataList = mutableListOf<DustSiteData>()
|
private val avgListReverse = mutableListOf<Double>()
|
private var startData: DustSiteData? = null
|
private var lastData: DustSiteData? = null
|
private var sIndex = 0
|
private var eIndex = -1
|
private var existException = false
|
|
override fun init() {
|
super.init()
|
historyDataList.clear()
|
tempDataList.clear()
|
avgListReverse.clear()
|
startData = null
|
lastData = null
|
sIndex = 0
|
eIndex = -1
|
existException = false
|
}
|
|
override fun getExceptionType(): ExceptionType = ExceptionType.TYPE7
|
|
override fun onNextData(data: DustSiteData) {
|
eIndex++
|
if (startData == null) {
|
startData = data
|
}
|
historyDataList.add(data)
|
|
// 数据加入临时数组
|
tempDataList.add(data)
|
// 数据量超出设置数量时，去除当前数据组首个数据
|
if (tempDataList.size > config.changeTrendGroup) {
|
tempDataList.removeAt(0)
|
}
|
// 数据量等于设置数量时，计算当前数据组均值
|
if (tempDataList.size == config.changeTrendGroup) {
|
calAvg(tempDataList)
|
if (checkSlideAvg()) {
|
existException = true
|
} else {
|
checkResult()
|
}
|
}
|
lastData = data
|
}
|
|
override fun onDone() {
|
checkResult()
|
}
|
|
/**
|
* 计算一组数据的均值
|
*/
|
private fun calAvg(list: List<DustSiteData>) {
|
var total = .0
|
val count = list.size
|
if (count == 0) return
|
list.forEach { total += it.dustValue }
|
val avg = total / count
|
avgListReverse.add(0, avg)
|
}
|
|
/**
|
* 计算数据组之间的均值差异是否连续超过限定比率
|
*/
|
private fun checkSlideAvg(): Boolean {
|
// 计算滑动均值最低要求个数
|
val minSize = config.changeTrendTimes + config.changeTrendInterval
|
if (avgListReverse.size < minSize) {
|
return false
|
} else {
|
// 滑动均值满足数量时，计算均值之间是否连续超过限定比率
|
val rateList = mutableListOf<Double>()
|
for (i in avgListReverse.indices) {
|
if (i >= config.changeTrendTimes) break
|
val r = calAvgChangeRate(avgListReverse[i], avgListReverse[i + config.changeTrendInterval])
|
rateList.add(r)
|
}
|
for (y in rateList) {
|
if (y < config.changeTrendRate) {
|
return false
|
}
|
}
|
return true
|
}
|
}
|
|
/**
|
* 计算滑动均值变化率
|
*/
|
private fun calAvgChangeRate(a1: Double, a2: Double): Double {
|
return if (a2 == .0) {
|
1.0
|
} else {
|
abs(a1 - a2) / a2
|
}
|
}
|
|
/**
|
* 当前数据未出现异常时，或数据循环结束时，判断后续步骤
|
*/
|
private fun checkResult() {
|
if (existException) {
|
resultList.add(newResult(startData!!, lastData))
|
existException = false
|
}
|
// 判断并更新起始点位置
|
val len = config.changeTrendGroup - 1 + config.changeTrendTimes + config.changeTrendInterval
|
if ((eIndex - sIndex + 1) > len) {
|
sIndex = eIndex + 1 - len
|
startData = historyDataList[sIndex]
|
}
|
}
|
}
|
