SE538391C2 - Indoor climate control system - Google Patents

Indoor climate control system

Info

Publication number
SE538391C2
SE538391C2 SE1400607A SE1400607A SE538391C2 SE 538391 C2 SE538391 C2 SE 538391C2 SE 1400607 A SE1400607 A SE 1400607A SE 1400607 A SE1400607 A SE 1400607A SE 538391 C2 SE538391 C2 SE 538391C2
Authority
SE
Sweden
Prior art keywords
impedance
control unit
output
substituting
control system
Prior art date
Application number
SE1400607A
Other languages
English (en)
Other versions
SE1400607A1 (sv
Inventor
Jan Johansson
Henrik Borg
Original Assignee
Scypho Sweden Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scypho Sweden Ab filed Critical Scypho Sweden Ab
Priority to SE1400607A priority Critical patent/SE1400607A1/sv
Priority to US15/538,351 priority patent/US20170371360A1/en
Priority to CN201580070987.7A priority patent/CN107111326A/zh
Priority to PCT/SE2015/051374 priority patent/WO2016105267A1/en
Priority to EP15873742.9A priority patent/EP3237987A4/en
Publication of SE538391C2 publication Critical patent/SE538391C2/sv
Publication of SE1400607A1 publication Critical patent/SE1400607A1/sv

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1917—Control of temperature characterised by the use of electric means using digital means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D22/00—Control of humidity
    • G05D22/02—Control of humidity characterised by the use of electric means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0275—Heating of spaces, e.g. rooms, wardrobes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Dc-Dc Converters (AREA)
  • Power Conversion In General (AREA)

Description

538 391 Indoor climate control system Technical field The invention relates to a control system applicable for indoor climate installations in which an electric equipment has a control line arranged to be connected to climate influenced impedance means. However, the man skilled in the art can also use it for other 10 applications within the scope of the appended claims.
Background of the invention Indoor climate control installations of the above-described kind exist in many variations and represent a considerable consumption of energy. For users in general and for the global society in particular, less consumption of energy is desirable. While new systems can offer energy savings at a maintained level of climate comfort, only a minor part of installations presently used are likely to be replaced in a near future. Instead of accepting the cost of a new installation, users may choose less comfort so as to reduce the energy consumption. A huge market can be found for an adapter that saves energy without loss of climate comfort. According to such a solution described in W02013070159, switching means are arranged to disconnect the climate influenced impedance means from the control line under influence from an output of a control unit and to instead connect substituting means providing an impedance controlled by a second output of the control unit.
In order to make the adapter as easy to install as possible, the control unit is provided with polarity probing means arranged to obtain an indication whether a connection of the substituting means to the control line results in a voltage with a positive or negative polarity, the connection of the substituting means being made in dependence on that indication and under influence of a third output of the control unit.
The substitution of the climate influenced impedance means presents, however, a problem as it is desirable to have the impedance determined with a high accuracy in spite of great variations in impedance magnitudes and the control line current characteristics. Electromagnetic relay contacts have aging effects for low-level electric currents. It is a challenge to find a semiconductor switching solution that is good enough at a low cost. 1 538 391 Summary of the invention According to the invention, the substituting means comprise a series connection of two equivalent impedance networks provided each one with by-pass switching means for a plurality of impedance means that have serics connected semiconductor switching means arranged in opposite directions and controlled by the second output of the control unit, the by-pass switching means being arranged to be alternatively activated by the third output of the control unit.
Brief description of the drawing The control system according to the invention will be described with reference made to 10 the drawing that shows a principle diagram of a preferred embodiment.
Preferred embodiment The drawing shows a principle diagram of an indoor climate control system in which a climate controlling equipment 1 has a control line 2 connected to climate influenced impedance means 3. Switching means 4 are arranged to disconnect the climate influenced impedance means 3 from the control line 2 under influence from an output 5 of a control unit 6 in favour of substituting means 7 providing an impedance controlled by a second output 8 of the control unit 6. According to the example, the latter is connected to a processor 9 arranged to receive information from a plurality of climate influenced information means 10, 11 and 12 and to process the same in a mathematical model for controlling the impedance of the substituting means 7 via the control unit 6.
The control unit 6 can, as described in W02013070159, be provided with suitable measuring means (not shown) for determining in a disconnected mode of the climate influenced impedance means 3 the characteristics of the same in order to control the impedance of the substituting means 7 at least initially and to frequently verify the same characteristics for a possible return to a connected mode.
The control unit 6 is provided with polarity probing means 13 arranged to obtain an indication whether a connection of the substituting means 7 to the control line 2 results in a voltage with a positive or negative polarity, the connection of the substituting means 7 being made in dependence on that indication and under influence of a third output 14 of the control unit.
According to the invention, the substituting means 7 comprise a series connection of two equivalent impedance networks 15 and 16 provided each one with by-pass switching means 17 and 18 for a plurality of impedance means 19 and that have series connected semiconductor switching means 21 and 22 arranged in opposite directions in respect to 2 538 391 control line 2 and controlled by the second output 8 of the control unit 6 and that have impedance values chosen in accordance with a logarithmic scale, the by-pass switching means 17 and 18 being arranged to be alternatively activated by the third output 14 of the control unit 6 and an inverter 23. The impedance means 19 and 20 consist, according to the example, of 23 resistors each with resistance values from 50 ohm up to 50 megaohm chosen in accordance with the E12 series. N-channel field effect transistors are used for the series switching means 21 and 22 and the by-pass switching means 17 and 18. The latter are provided with resistors 24 and 25 that have sufficiently low resistance values to be used as short circuit links for connecting always the negative pole of the control line 2 10 to a signal ground 26 of the control unit 6.
The man skilled in the art can also use the control system of the invention for other applications within the scope of the appended claims. The impedance means 19 and 20 can then consist of resistors as in the described indoor climate control system or they can also consist of capacitors or inductors. 3

Claims (4)

538 391 Patentkrav
1. Inomhusklimatstyrsystem innefattande en elektrisk utrustning (1) som har en styrledning (2) anordnad att anslutas till impedansorgan (3) saval som att aktivera ersattningsorgan (7) som tillhandahAller en impedans styrd av en forsta utgang (8) hos en styrenhet (6), varvid styrenheten har polaritetsonderingsorgan (13) anordnat att erhalla en indikation huruvida en anslutning av namnda ersattningsorgan till styrledningen resulterar i en spanning med en positiv eller negativ polaritet, varvid anslutningen av namnda ersattningsorgan sker i beroende av indikationen och under piverkan av en andra utgAng (14) hos styrenheten, varvid nannda ersattningsorgan innefattar en seriekoppling av tv5. ekvivalenta impedansnatverk (15, 16) var och en tillhandahallna med forbikopplingsorgan (17, 18) for ett flertal impedansorgan (19, 20) som har seriekopplade halvledaromkopplingsorgan (21, 22) anordnade i motsatta riktningar och styrda av den forsta utgAngen hos styrenheten, varvid namnda forbikopplingsorgan är anordnat att alternativt bli aktiverat av den andra utgangen hos styrenheten.
2. Styrsystem enligt patentkrav 1, varvid de flertalet impedansorganen bestar av resistorer.
3. Styrsystem enligt patentkrav 1, varvid de flertalet impedansorganen bestar av kondensatorer.
4. Styrsystem enligt patentkrav 1, varvid de flertalet impedansorganen bestar av induktorer. 538 391 17-■ r — IIi 24— 1 1HI I 1 r r ,1 <-19—>-I 1 1 1 1 — — — 23— Ll 8) 14 26 1>j
SE1400607A 2014-12-23 2014-12-23 Indoor climate control system SE1400607A1 (sv)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE1400607A SE1400607A1 (sv) 2014-12-23 2014-12-23 Indoor climate control system
US15/538,351 US20170371360A1 (en) 2014-12-23 2015-12-18 Control system
CN201580070987.7A CN107111326A (zh) 2014-12-23 2015-12-18 控制系统
PCT/SE2015/051374 WO2016105267A1 (en) 2014-12-23 2015-12-18 Control system
EP15873742.9A EP3237987A4 (en) 2014-12-23 2015-12-18 Control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1400607A SE1400607A1 (sv) 2014-12-23 2014-12-23 Indoor climate control system

Publications (2)

Publication Number Publication Date
SE538391C2 true SE538391C2 (sv) 2016-06-07
SE1400607A1 SE1400607A1 (sv) 2016-06-07

Family

ID=56087636

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1400607A SE1400607A1 (sv) 2014-12-23 2014-12-23 Indoor climate control system

Country Status (5)

Country Link
US (1) US20170371360A1 (sv)
EP (1) EP3237987A4 (sv)
CN (1) CN107111326A (sv)
SE (1) SE1400607A1 (sv)
WO (1) WO2016105267A1 (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE540397C2 (en) * 2016-11-25 2018-09-11 Manetos Ab Electric circuit with low voltage drop

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6062483A (en) * 1995-08-03 2000-05-16 Meletio; Larry B. Electronic thermostat
GB2408592B (en) * 2003-11-27 2005-11-16 James Ian Oswald Household energy management system
BRPI0604746A (pt) * 2006-11-24 2008-07-08 Siemens Vdo Automotive Ltda dispositivo de interface de controle de sistemas de climatização de veìculos automotores, conjunto centralizado de comando de sistemas veiculares, sistema de climatização de veìculos automotores, e veìculo automotor
US9020647B2 (en) * 2009-03-27 2015-04-28 Siemens Industry, Inc. System and method for climate control set-point optimization based on individual comfort
MX336888B (es) * 2009-11-18 2016-02-04 Pacecontrols Llc Controlador para control automatico y optimizacion del equipo hvac&r de ciclo de trabajo, y sistemas y metodos que utilizan el mismo.
US20120229937A1 (en) * 2011-03-09 2012-09-13 Honeywell International Inc. High current dc switching controller with fault monitoring
SE536178C2 (sv) * 2011-11-11 2013-06-11 Atc Ind Group Ab System för klimatstyrning

Also Published As

Publication number Publication date
EP3237987A4 (en) 2018-07-04
CN107111326A (zh) 2017-08-29
EP3237987A1 (en) 2017-11-01
WO2016105267A1 (en) 2016-06-30
US20170371360A1 (en) 2017-12-28
SE1400607A1 (sv) 2016-06-07

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