Casestudie Breakdown prediction Contell PILOT - Transumo

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This mode forces the system to store a measuring point every single minute instead of every 15 minutes. 15 Column number five shows the last measured value. Depending on the classified current state of the attached device this value can be up to 15 minutes old within normal operation mode. To be able to classify such temperature values, critical limits are set, as described in section 2.3. These limits can be seen in column number seven and eight for every single device. Figure 3-3: XiltriX - The Main Screen [DEMO06] In Addition to these limits, a delay time can be defined for minimum and maximum temperature alarms in column six and nine. After having passed a critical temperature limit, the system is waiting for a predefined time, before it alarms the person in charge. The last two columns contain date, time and the most critical temperature value of a current alarm. Entries within these two columns can only be cleared by an alarm reset. 16 15 See section 3.2.1 for details 16 See section 3.2.2 for details 24
To indicate important events within this table XiltriX uses a color code to highlight exceptional temperature values and alarm messages. The colors and their meanings are listed in Table 3-1. Table 3-1: Listing of Existing Table Color Codes and Their Meaning Color Meaning Orange Temperature exceeded the set minimum or maximum limit value or the door is open (within delay time) Blue Temperature exceeded the set minimum limit value (delay time has passed) Red Temperature exceeded the set maximum limit value (delay time has passed) Yellow An alarm has been canceled but not reset yet Purple An alarm has been reset but an activation delay is configured and active 17 Below the just described table there is another smaller one, which offers information of digital input devices that can be bound but do not have to be bound to a single machine. Figure 3-3 shows an installed start/stop switch for fridge number 4. 18 This switch can be used to stop the monitoring of this device. In case of pushing the corresponding button, the monitoring of this device will be stopped. But at the same time an alarm would go off because the delay time for this device is set to zero. This can be seen in the DS column. Of course, a scenario like that does not make sense in practice, but this data is taken from the demo system. It is only made up for testing purposes and should only show the technical possibilities of XiltriX. In reality, a button like this could be useful, for instance, to disable alarms for cleaning purposes. Of course, a delay time higher than zero minutes is necessary. Other attachable switches and their functionality will be presented within section 3.3.1. Another important element of the main screen is the status bar above the just described tables because it offers an overview of the whole system. Monitored devices can be grouped into up to 16 different departments. The color of the corresponding department button indicates, whether every machine within this group is operating as expected or not. Table 3-2 gives an overview of the existing colors and their meanings. 17 See section 3.2.2 for details 18 See section 3.3.1 for details 25
Page 1 and 2: Technische Universität Braunschwei
Page 3 and 4: 4.4 Review of Current State of Rese
Page 5 and 6: Index of Tables Table 2-1: Error of
Page 7 and 8: 1 Introduction 1.1 Initial Position
Page 9 and 10: 2 Sensor Based Temperature Monitori
Page 11 and 12: compressor. They are served by a ce
Page 13 and 14: the specified value, it works very
Page 15 and 16: of this, over a hundred irregular p
Page 17 and 18: a centralized one. An isolated appl
Page 19 and 20: Figure 2-8: Lack of Information Pro
Page 21 and 22: Moreover, the fridge’s filling le
Page 23 and 24: store this kind of data but only of
Page 25 and 26: 3 Current Monitoring Systems The la
Page 27 and 28: device’s condition. Especially th
Page 29: a converter that is also available
Page 33 and 34: 1. Display stored data in table for
Page 35 and 36: This way of visualizing data is the
Page 37 and 38: free text. Moreover it is possible
Page 39 and 40: dependent limit and delay settings,
Page 41 and 42: Aside from these functions, the kin
Page 43 and 44: 1. Temperature verification in retr
Page 45 and 46: alarms by the use of additionally a
Page 47 and 48: The third mentioned Centron Environ
Page 49 and 50: 4 Current State of Research As alre
Page 51 and 52: even this improvement is still face
Page 53 and 54: Another current approach is regress
Page 55 and 56: S o n 2 = ∑ Yi −Yi n −1 i= 2
Page 57 and 58: This algorithm returns an upper and
Page 59 and 60: • Critical values • Pre-warning
Page 61 and 62: 5 Possible and Promising Ways of Da
Page 63 and 64: could be: “The mean increase of a
Page 65 and 66: The mode is the most frequent value
Page 67 and 68: Figure 5-1: Two Samples of Regressi
Page 69 and 70: 5.4.2 The Major Problems of Regress
Page 71 and 72: The next section will introduce tim
Page 73 and 74: explained in section 5.4. If such a
Page 75 and 76: pictured in Formula 5-12. Beside a
Page 77 and 78: P ( m) = P ( r ) ⋅ P ( m−r ) wi
Page 79 and 80: But the greatest problem is again t
Page 81 and 82:
clustering as well as an analysis o
Page 83 and 84:
The general idea of supervised lear
Page 85 and 86:
sometimes data of a door opening se
Page 87 and 88:
Beside the introduced notification
Page 89 and 90:
A classification could be achieved
Page 91 and 92:
Table 5-1: Estimated Improvements A
Page 93 and 94:
As all these software products fail
Page 95 and 96:
6.2 Case Study The UMC St. Radboud
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Figure 6-3: Maximum Values at Dayti
Page 99 and 100:
Figure 6-5: Minimum Values at Dayti
Page 101 and 102:
Figure 6-9: Standard Deviation at D
Page 103 and 104:
Table 6-3: Reported Notifications (
Page 105 and 106:
Important for the determination of
Page 107 and 108:
Remarkable is a comparison to the a
Page 109 and 110:
Interviews with several employees f
Page 111 and 112:
7 Summary Cooling devices within me
Page 113 and 114:
Bibliography Books and Articles: [B
Page 115 and 116:
[Wittenberg98] Reinhard Wittenberg,
Page 117 and 118:
Appendix 1 - Implementation of Inte
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%Name and location of the source fi
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Appendix 2 - Implementation of Stat
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dailydate = [dailydate; floor(date(
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%Count Dooropenings per Day dailydo
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xlswrite(strcat(path, 'Excel\', fil
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print('-dtiff', strcat(path, 'Graph
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ar([dailydate(1):dailydate(length(s
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Appendix 3 - Implementation of Data
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Duration = 0; maxtemp = 0; elseif (
Page 137 and 138:
%Contains [Duration, Number of Occu
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disp(strcat('Dooropening
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