CN105051508A - Circuit for multipoint temperature measurement, especially in power electronic converters - Google Patents
Circuit for multipoint temperature measurement, especially in power electronic converters Download PDFInfo
- Publication number
- CN105051508A CN105051508A CN201480003730.5A CN201480003730A CN105051508A CN 105051508 A CN105051508 A CN 105051508A CN 201480003730 A CN201480003730 A CN 201480003730A CN 105051508 A CN105051508 A CN 105051508A
- Authority
- CN
- China
- Prior art keywords
- circuit
- wire
- temperature sensor
- voltage
- diode
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/08—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values
- G01K3/14—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values in respect of space
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
Circuit consists of at least two temperature sensors (3) with first (4) and second (5) lead, of at least two operational amplifiers (6) and of at least two diodes (7). First voltage lead (4) of every temperature sensor (3) is connected with a non-inverting input of an operational amplifier (6) assigned to that temperature sensor (3), Output of each operational amplifier (6) is connected with an anode from a diode (7) assigned to this amplifier (6). Inverting inputs from all operational amplifiers (6) are connected with each other, with all of diode (7) cathodes and with circuit's voltage output positive pole (1). The circuit's voltage output negative pole (2) and second leads (5) of temperature sensors (6) are connected to ground.
Description
Technical field
Theme of the present invention is the circuit for multipoint temperature measuring of application in electronic power convertor (powerelectronicconverter), wherein for the safety precautions increased for the semiconductor junction temperature higher than the acceptable level determined by device manufacturers, there are needs.
Background technology
In the publication, PL190473B1 disclosed by multiple thermistor form for thermometric circuit and the method for temperature calculating thermistor, it is connected to the charging and discharging time of the capacitor of reference power supply based on the array by switching thermosensitive resistor and circuit.
Like two kinds for the circuit of multipoint temperature measuring at books R.F.Graf " electronic circuit encyclopedia " 0 [TABBooks, 1990Vol.IIIp.63] and R.F.Graf, W.Sheets " electronic circuit encyclopedia " [McGraw-Hill/TABElectronix1996, Vol.VIp.634] in provide, these are the second edition book from deriving from the operational manual of SilictronixIntegratedCircuitsDataBook (1988) and the PopularElectronicsJournalVol.6/95 from GernsbackPublicationsInc. respectively.The first circuit from Silictronix company publication uses the differential multiplexer DG409 switched from the signal of four thermopairs to set up, and the temperature survey exported is compared with the reference value corresponding to threshold temperature level from multiplexer.Circuit arrangement from PopularElectronics publication uses 4051 multiplexers and eight LM335 temperature sensors, output signal from multiplexer is delivered to 8 analogue-to-digital converters ADC0831, and is delivered to digital 8 BITBUS network afterwards.
According to patent publications GB934654, it is known that by many circuit making the branch road of one or two transistor biasing (it uses thermistor and resistor to set up) form, it allows the detection of crossing threshold temperature (crossingthresholdtemperature) in many measurement points.
the disclosure of invention
The single voltage with positive pole and negative pole is equipped with to export in a circuit according to the invention, and by operational amplifier, diode with there is the temperature sensor that voltage exports form.Each temperature sensor has the first wire and the second wire, in-between the output voltage of measuring tempeature sensor.The feature of circuit is, it has the temperature sensor of the first wire and the second wire, at least two operational amplifiers by least two and form to few two diodes.First voltage conductor of each temperature sensor is connected with noninverting input of the operational amplifier distributing to this temperature sensor.The output of each operational amplifier is connected with the anode from the diode distributing to this amplifier.Anti-phase input from all operational amplifiers is connected to each other, be connected with whole diode cathode and be connected with the voltage output cathode of circuit, and the voltage output negative pole of circuit and the second wire of temperature sensor are ground connection simultaneously.
Use the maximum temperature always can measuring the measurement point temperature from any amount in a circuit according to the invention.Depend on the quantity of measurement point, can easily circuit be expanded.
accompanying drawing is sketched
In the accompanying drawings, schematic diagram is utilized to depict the present invention.
for the mode carried out an invention
Electronic circuit according to the present invention is equipped with the single voltage with positive pole 1 and negative pole 2 to export.Circuit is made up of at least two temperature sensors 3, at least two operational amplifiers 6 and at least two diodes 7, and each sensor has the voltage with the first wire 4 and the second wire 5 to export.The first wire 4 that the voltage of each temperature sensor 3 exports is connected with noninverting input of the operational amplifier 6 distributing to described temperature sensor 3.The output of each operational amplifier 6 is connected with the anode from the diode 7 distributing to described amplifier 6.Anti-phase input from all operational amplifiers 6 is connected to each other, be connected with whole diode cathode 7 and be connected with circuit voltage output cathode 1.Second wire 5 ground connection of circuit voltage output negative pole 2 and temperature sensor 3.Operational amplifier 6 equals the noninverting mode operation of with gain.Anti-phase input and the connection from the negative electrode of diode 7 of operational amplifier 6 achieve the compensation to the voltage drop on diode 7 semiconductor junction.
Claims (1)
1. for the circuit of multipoint temperature measuring, especially the circuit for multipoint temperature measuring in electronic power convertor, described circuit is equipped with the single voltage with positive pole (1) and negative pole (2) to export and by operational amplifier (6), diode (7) and there is temperature sensor (3) composition exported with voltage of the first wire (4) and the second wire (5), the output voltage of described temperature sensor (3) is measured between described first wire (4) and described second wire (5), it is characterized in that described circuit has the temperature sensor (3) of the first wire (4) and the second wire (5) by least two, at least two operational amplifiers (6) and forming to few two diodes (7), first voltage conductor (4) of each temperature sensor (3) is connected with noninverting input of the operational amplifier (6) distributing to this temperature sensor (3), the output of each operational amplifier (6) is connected with the anode from the diode (7) distributing to this amplifier (6), anti-phase input from all operational amplifiers (6) is connected to each other, be connected with whole diode (7) negative electrode, and be connected with the voltage output cathode (1) of circuit, the voltage output negative pole (2) of circuit and second wire (5) of temperature sensor (6) are ground connection simultaneously.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PLP.407186 | 2014-02-14 | ||
| PL407186A PL225350B1 (en) | 2014-02-14 | 2014-02-14 | System of multi-point measurement of temperature, preferably in electronic power converters |
| PCT/IB2014/067289 WO2015121721A1 (en) | 2014-02-14 | 2014-12-23 | Circuit for multipoint temperature measurement, especially in power electronic converters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105051508A true CN105051508A (en) | 2015-11-11 |
Family
ID=52462355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480003730.5A Pending CN105051508A (en) | 2014-02-14 | 2014-12-23 | Circuit for multipoint temperature measurement, especially in power electronic converters |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105051508A (en) |
| PL (1) | PL225350B1 (en) |
| WO (1) | WO2015121721A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465758A (en) * | 2021-06-21 | 2021-10-01 | 中国原子能科学研究院 | Temperature measuring device and temperature measuring system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4699519A (en) * | 1985-04-08 | 1987-10-13 | Performance Technology, Inc. | Grain temperature monitor |
| CN1265190A (en) * | 1997-07-28 | 2000-08-30 | 微动公司 | Multiple resistive sensors for coriolis effect mass flowmeter |
| CN201014964Y (en) * | 2007-01-01 | 2008-01-30 | 周加超 | Animal heat measurement optical display pen |
| US20110002358A1 (en) * | 2009-07-02 | 2011-01-06 | Renesas Technology America, Inc. | Temperature Detection and Reporting System and Method in Power Driving and/or Consuming System |
| WO2013178324A2 (en) * | 2012-06-01 | 2013-12-05 | Sew-Eurodrive Gmbh & Co. Kg | Modular system, particularly modularly constructed energy store |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB934654A (en) | 1959-09-04 | 1963-08-21 | Karl Gustaf Berg | Electronic transistor-controlled device for measuring or control of temperatures |
| CH687349A5 (en) | 1996-07-24 | 1996-11-15 | Landis & Gyr Ag | Temp measuring circuit for temp-dependent resistance |
-
2014
- 2014-02-14 PL PL407186A patent/PL225350B1/en unknown
- 2014-12-23 CN CN201480003730.5A patent/CN105051508A/en active Pending
- 2014-12-23 WO PCT/IB2014/067289 patent/WO2015121721A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4699519A (en) * | 1985-04-08 | 1987-10-13 | Performance Technology, Inc. | Grain temperature monitor |
| CN1265190A (en) * | 1997-07-28 | 2000-08-30 | 微动公司 | Multiple resistive sensors for coriolis effect mass flowmeter |
| CN201014964Y (en) * | 2007-01-01 | 2008-01-30 | 周加超 | Animal heat measurement optical display pen |
| US20110002358A1 (en) * | 2009-07-02 | 2011-01-06 | Renesas Technology America, Inc. | Temperature Detection and Reporting System and Method in Power Driving and/or Consuming System |
| WO2013178324A2 (en) * | 2012-06-01 | 2013-12-05 | Sew-Eurodrive Gmbh & Co. Kg | Modular system, particularly modularly constructed energy store |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015121721A1 (en) | 2015-08-20 |
| PL225350B1 (en) | 2017-03-31 |
| PL407186A1 (en) | 2015-08-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151111 |
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| WD01 | Invention patent application deemed withdrawn after publication |